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e04a16fb AG |
1 | /* Source code parsing and tree node generation for the GNU compiler |
2 | for the Java(TM) language. | |
e511adc0 | 3 | Copyright (C) 1997, 1998, 1999 Free Software Foundation, Inc. |
e04a16fb AG |
4 | Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com) |
5 | ||
6 | This file is part of GNU CC. | |
7 | ||
8 | GNU CC is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2, or (at your option) | |
11 | any later version. | |
12 | ||
13 | GNU CC is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU CC; see the file COPYING. If not, write to | |
20 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, USA. | |
22 | ||
23 | Java and all Java-based marks are trademarks or registered trademarks | |
24 | of Sun Microsystems, Inc. in the United States and other countries. | |
25 | The Free Software Foundation is independent of Sun Microsystems, Inc. */ | |
26 | ||
27 | /* This file parses java source code and issues a tree node image | |
28 | suitable for code generation (byte code and targeted CPU assembly | |
29 | language). | |
30 | ||
31 | The grammar conforms to the Java grammar described in "The Java(TM) | |
32 | Language Specification. J. Gosling, B. Joy, G. Steele. Addison Wesley | |
33 | 1996, ISBN 0-201-63451-1" | |
34 | ||
35 | The following modifications were brought to the original grammar: | |
36 | ||
37 | method_body: added the rule '| block SC_TK' | |
e04a16fb AG |
38 | static_initializer: added the rule 'static block SC_TK'. |
39 | ||
40 | Note: All the extra rules described above should go away when the | |
41 | empty_statement rule will work. | |
42 | ||
43 | statement_nsi: 'nsi' should be read no_short_if. | |
44 | ||
45 | Some rules have been modified to support JDK1.1 inner classes | |
46 | definitions and other extensions. */ | |
47 | ||
48 | %{ | |
e04a16fb | 49 | #include "config.h" |
36635152 GS |
50 | #include "system.h" |
51 | #include <dirent.h> | |
e04a16fb AG |
52 | #include "tree.h" |
53 | #include "rtl.h" | |
54 | #include "obstack.h" | |
0a2138e2 | 55 | #include "toplev.h" |
e04a16fb AG |
56 | #include "flags.h" |
57 | #include "java-tree.h" | |
58 | #include "jcf.h" | |
59 | #include "lex.h" | |
60 | #include "parse.h" | |
61 | #include "zipfile.h" | |
5e942c50 | 62 | #include "convert.h" |
63a212ed | 63 | #include "buffer.h" |
e04a16fb | 64 | |
fa322ab5 TT |
65 | #ifndef DIR_SEPARATOR |
66 | #define DIR_SEPARATOR '/' | |
67 | #endif | |
68 | ||
82371d41 APB |
69 | /* Local function prototypes */ |
70 | static char *java_accstring_lookup PROTO ((int)); | |
71 | static void classitf_redefinition_error PROTO ((char *,tree, tree, tree)); | |
72 | static void variable_redefinition_error PROTO ((tree, tree, tree, int)); | |
73 | static void check_modifiers PROTO ((char *, int, int)); | |
74 | static tree create_class PROTO ((int, tree, tree, tree)); | |
75 | static tree create_interface PROTO ((int, tree, tree)); | |
76 | static tree find_field PROTO ((tree, tree)); | |
77 | static tree lookup_field_wrapper PROTO ((tree, tree)); | |
78 | static int duplicate_declaration_error_p PROTO ((tree, tree, tree)); | |
79 | static void register_fields PROTO ((int, tree, tree)); | |
80 | static tree parser_qualified_classname PROTO ((tree)); | |
81 | static int parser_check_super PROTO ((tree, tree, tree)); | |
82 | static int parser_check_super_interface PROTO ((tree, tree, tree)); | |
83 | static void check_modifiers_consistency PROTO ((int)); | |
84 | static tree lookup_cl PROTO ((tree)); | |
85 | static tree lookup_java_method2 PROTO ((tree, tree, int)); | |
86 | static tree method_header PROTO ((int, tree, tree, tree)); | |
87 | static void fix_method_argument_names PROTO ((tree ,tree)); | |
88 | static tree method_declarator PROTO ((tree, tree)); | |
d4476be2 KG |
89 | static void parse_warning_context PVPROTO ((tree cl, const char *msg, ...)) |
90 | ATTRIBUTE_PRINTF_2; | |
91 | static void issue_warning_error_from_context PROTO ((tree, const char *msg, va_list)); | |
82371d41 APB |
92 | static tree parse_jdk1_1_error PROTO ((char *)); |
93 | static void complete_class_report_errors PROTO ((jdep *)); | |
94 | static int process_imports PROTO ((void)); | |
95 | static void read_import_dir PROTO ((tree)); | |
96 | static int find_in_imports_on_demand PROTO ((tree)); | |
97 | static int find_in_imports PROTO ((tree)); | |
98 | static int check_pkg_class_access PROTO ((tree, tree)); | |
99 | static tree resolve_package PROTO ((tree, tree *)); | |
100 | static tree lookup_package_type PROTO ((char *, int)); | |
101 | static tree resolve_class PROTO ((tree, tree, tree)); | |
82371d41 APB |
102 | static void declare_local_variables PROTO ((int, tree, tree)); |
103 | static void source_start_java_method PROTO ((tree)); | |
104 | static void source_end_java_method PROTO ((void)); | |
105 | static void expand_start_java_method PROTO ((tree)); | |
106 | static tree find_name_in_single_imports PROTO ((tree)); | |
107 | static void check_abstract_method_header PROTO ((tree)); | |
108 | static tree lookup_java_interface_method2 PROTO ((tree, tree)); | |
109 | static tree resolve_expression_name PROTO ((tree, tree *)); | |
110 | static tree maybe_create_class_interface_decl PROTO ((tree, tree, tree)); | |
111 | static int check_class_interface_creation PROTO ((int, int, tree, | |
112 | tree, tree, tree)); | |
113 | static tree patch_method_invocation PROTO ((tree, tree, tree, | |
89e09b9a | 114 | int *, tree *)); |
82371d41 APB |
115 | static int breakdown_qualified PROTO ((tree *, tree *, tree)); |
116 | static tree resolve_and_layout PROTO ((tree, tree)); | |
117 | static tree resolve_no_layout PROTO ((tree, tree)); | |
118 | static int invocation_mode PROTO ((tree, int)); | |
119 | static tree find_applicable_accessible_methods_list PROTO ((int, tree, | |
120 | tree, tree)); | |
121 | static tree find_most_specific_methods_list PROTO ((tree)); | |
122 | static int argument_types_convertible PROTO ((tree, tree)); | |
89e09b9a | 123 | static tree patch_invoke PROTO ((tree, tree, tree)); |
82371d41 APB |
124 | static tree lookup_method_invoke PROTO ((int, tree, tree, tree, tree)); |
125 | static tree register_incomplete_type PROTO ((int, tree, tree, tree)); | |
126 | static tree obtain_incomplete_type PROTO ((tree)); | |
5b09b33e | 127 | static tree java_complete_lhs PROTO ((tree)); |
82371d41 APB |
128 | static tree java_complete_tree PROTO ((tree)); |
129 | static void java_complete_expand_method PROTO ((tree)); | |
130 | static int unresolved_type_p PROTO ((tree, tree *)); | |
131 | static void create_jdep_list PROTO ((struct parser_ctxt *)); | |
132 | static tree build_expr_block PROTO ((tree, tree)); | |
133 | static tree enter_block PROTO ((void)); | |
134 | static tree enter_a_block PROTO ((tree)); | |
135 | static tree exit_block PROTO ((void)); | |
136 | static tree lookup_name_in_blocks PROTO ((tree)); | |
137 | static void maybe_absorb_scoping_blocks PROTO ((void)); | |
138 | static tree build_method_invocation PROTO ((tree, tree)); | |
139 | static tree build_new_invocation PROTO ((tree, tree)); | |
140 | static tree build_assignment PROTO ((int, int, tree, tree)); | |
141 | static tree build_binop PROTO ((enum tree_code, int, tree, tree)); | |
142 | static int check_final_assignment PROTO ((tree ,tree)); | |
143 | static tree patch_assignment PROTO ((tree, tree, tree )); | |
144 | static tree patch_binop PROTO ((tree, tree, tree)); | |
145 | static tree build_unaryop PROTO ((int, int, tree)); | |
146 | static tree build_incdec PROTO ((int, int, tree, int)); | |
147 | static tree patch_unaryop PROTO ((tree, tree)); | |
148 | static tree build_cast PROTO ((int, tree, tree)); | |
149 | static tree build_null_of_type PROTO ((tree)); | |
150 | static tree patch_cast PROTO ((tree, tree)); | |
151 | static int valid_ref_assignconv_cast_p PROTO ((tree, tree, int)); | |
152 | static int valid_builtin_assignconv_identity_widening_p PROTO ((tree, tree)); | |
153 | static int valid_cast_to_p PROTO ((tree, tree)); | |
154 | static int valid_method_invocation_conversion_p PROTO ((tree, tree)); | |
155 | static tree try_builtin_assignconv PROTO ((tree, tree, tree)); | |
156 | static tree try_reference_assignconv PROTO ((tree, tree)); | |
157 | static tree build_unresolved_array_type PROTO ((tree)); | |
158 | static tree build_array_from_name PROTO ((tree, tree, tree, tree *)); | |
159 | static tree build_array_ref PROTO ((int, tree, tree)); | |
160 | static tree patch_array_ref PROTO ((tree)); | |
161 | static tree make_qualified_name PROTO ((tree, tree, int)); | |
162 | static tree merge_qualified_name PROTO ((tree, tree)); | |
163 | static tree make_qualified_primary PROTO ((tree, tree, int)); | |
164 | static int resolve_qualified_expression_name PROTO ((tree, tree *, | |
165 | tree *, tree *)); | |
166 | static void qualify_ambiguous_name PROTO ((tree)); | |
167 | static void maybe_generate_clinit PROTO ((void)); | |
168 | static tree resolve_field_access PROTO ((tree, tree *, tree *)); | |
169 | static tree build_newarray_node PROTO ((tree, tree, int)); | |
170 | static tree patch_newarray PROTO ((tree)); | |
171 | static tree resolve_type_during_patch PROTO ((tree)); | |
172 | static tree build_this PROTO ((int)); | |
173 | static tree build_return PROTO ((int, tree)); | |
174 | static tree patch_return PROTO ((tree)); | |
175 | static tree maybe_access_field PROTO ((tree, tree, tree)); | |
176 | static int complete_function_arguments PROTO ((tree)); | |
177 | static int check_for_static_method_reference PROTO ((tree, tree, tree, tree, tree)); | |
178 | static int not_accessible_p PROTO ((tree, tree, int)); | |
179 | static void check_deprecation PROTO ((tree, tree)); | |
180 | static int class_in_current_package PROTO ((tree)); | |
181 | static tree build_if_else_statement PROTO ((int, tree, tree, tree)); | |
182 | static tree patch_if_else_statement PROTO ((tree)); | |
183 | static tree add_stmt_to_compound PROTO ((tree, tree, tree)); | |
184 | static tree add_stmt_to_block PROTO ((tree, tree, tree)); | |
185 | static tree patch_exit_expr PROTO ((tree)); | |
186 | static tree build_labeled_block PROTO ((int, tree)); | |
187 | static tree generate_labeled_block PROTO (()); | |
188 | static tree complete_labeled_statement PROTO ((tree, tree)); | |
189 | static tree build_bc_statement PROTO ((int, int, tree)); | |
190 | static tree patch_bc_statement PROTO ((tree)); | |
191 | static tree patch_loop_statement PROTO ((tree)); | |
192 | static tree build_new_loop PROTO ((tree)); | |
193 | static tree build_loop_body PROTO ((int, tree, int)); | |
194 | static tree complete_loop_body PROTO ((int, tree, tree, int)); | |
195 | static tree build_debugable_stmt PROTO ((int, tree)); | |
196 | static tree complete_for_loop PROTO ((int, tree, tree, tree)); | |
197 | static tree patch_switch_statement PROTO ((tree)); | |
198 | static tree string_constant_concatenation PROTO ((tree, tree)); | |
199 | static tree build_string_concatenation PROTO ((tree, tree)); | |
200 | static tree patch_string_cst PROTO ((tree)); | |
201 | static tree patch_string PROTO ((tree)); | |
202 | static tree build_jump_to_finally PROTO ((tree, tree, tree, tree)); | |
a7d8d81f PB |
203 | static tree build_try_statement PROTO ((int, tree, tree)); |
204 | static tree build_try_finally_statement PROTO ((int, tree, tree)); | |
82371d41 APB |
205 | static tree patch_try_statement PROTO ((tree)); |
206 | static tree patch_synchronized_statement PROTO ((tree, tree)); | |
207 | static tree patch_throw_statement PROTO ((tree, tree)); | |
208 | static void check_thrown_exceptions PROTO ((int, tree)); | |
209 | static int check_thrown_exceptions_do PROTO ((tree)); | |
210 | static void purge_unchecked_exceptions PROTO ((tree)); | |
211 | static void check_throws_clauses PROTO ((tree, tree, tree)); | |
212 | static void complete_method_declaration PROTO ((tree)); | |
213 | static tree build_super_invocation PROTO (()); | |
214 | static int verify_constructor_circularity PROTO ((tree, tree)); | |
215 | static char *constructor_circularity_msg PROTO ((tree, tree)); | |
216 | static tree build_this_super_qualified_invocation PROTO ((int, tree, tree, | |
217 | int, int)); | |
218 | static char *get_printable_method_name PROTO ((tree)); | |
219 | static tree patch_conditional_expr PROTO ((tree, tree, tree)); | |
220 | static void maybe_generate_finit PROTO (()); | |
221 | static void fix_constructors PROTO ((tree)); | |
222 | static int verify_constructor_super PROTO (()); | |
223 | static tree create_artificial_method PROTO ((tree, int, tree, tree, tree)); | |
224 | static void start_artificial_method_body PROTO ((tree)); | |
225 | static void end_artificial_method_body PROTO ((tree)); | |
82371d41 APB |
226 | static int check_method_redefinition PROTO ((tree, tree)); |
227 | static int reset_method_name PROTO ((tree)); | |
228 | static void java_check_regular_methods PROTO ((tree)); | |
229 | static void java_check_abstract_methods PROTO ((tree)); | |
230 | static tree maybe_build_primttype_type_ref PROTO ((tree, tree)); | |
231 | static void unreachable_stmt_error PROTO ((tree)); | |
232 | static tree find_expr_with_wfl PROTO ((tree)); | |
233 | static void missing_return_error PROTO ((tree)); | |
f8976021 APB |
234 | static tree build_new_array_init PROTO ((int, tree)); |
235 | static tree patch_new_array_init PROTO ((tree, tree)); | |
f8976021 APB |
236 | static tree maybe_build_array_element_wfl PROTO ((tree)); |
237 | static int array_constructor_check_entry PROTO ((tree, tree)); | |
4a5f66c3 | 238 | static char *purify_type_name PROTO ((char *)); |
7525cc04 | 239 | static tree patch_initialized_static_field PROTO ((tree)); |
5b09b33e | 240 | static tree fold_constant_for_init PROTO ((tree, tree)); |
e28cd97b | 241 | static tree strip_out_static_field_access_decl PROTO ((tree)); |
82371d41 | 242 | |
e04a16fb AG |
243 | /* Number of error found so far. */ |
244 | int java_error_count; | |
245 | /* Number of warning found so far. */ | |
246 | int java_warning_count; | |
247 | ||
248 | /* The current parser context */ | |
249 | static struct parser_ctxt *ctxp; | |
250 | ||
b351b287 APB |
251 | /* List of things that were anlyzed for which code will be generated */ |
252 | static struct parser_ctxt *ctxp_for_generation = NULL; | |
253 | ||
e04a16fb AG |
254 | /* binop_lookup maps token to tree_code. It is used where binary |
255 | operations are involved and required by the parser. RDIV_EXPR | |
256 | covers both integral/floating point division. The code is changed | |
257 | once the type of both operator is worked out. */ | |
258 | ||
259 | static enum tree_code binop_lookup[19] = | |
260 | { | |
261 | PLUS_EXPR, MINUS_EXPR, MULT_EXPR, RDIV_EXPR, TRUNC_MOD_EXPR, | |
262 | LSHIFT_EXPR, RSHIFT_EXPR, URSHIFT_EXPR, | |
263 | BIT_AND_EXPR, BIT_XOR_EXPR, BIT_IOR_EXPR, | |
264 | TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR, | |
265 | EQ_EXPR, NE_EXPR, GT_EXPR, GE_EXPR, LT_EXPR, LE_EXPR, | |
266 | }; | |
267 | #define BINOP_LOOKUP(VALUE) \ | |
268 | binop_lookup [((VALUE) - PLUS_TK)% \ | |
269 | (sizeof (binop_lookup) / sizeof (binop_lookup[0]))] | |
270 | ||
271 | /* Fake WFL used to report error message. It is initialized once if | |
272 | needed and reused with it's location information is overriden. */ | |
15fdcfe9 | 273 | tree wfl_operator = NULL_TREE; |
e04a16fb AG |
274 | |
275 | /* The "$L" identifier we use to create labels. */ | |
b67d701b PB |
276 | static tree label_id = NULL_TREE; |
277 | ||
278 | /* The "StringBuffer" identifier used for the String `+' operator. */ | |
279 | static tree wfl_string_buffer = NULL_TREE; | |
280 | ||
281 | /* The "append" identifier used for String `+' operator. */ | |
282 | static tree wfl_append = NULL_TREE; | |
283 | ||
284 | /* The "toString" identifier used for String `+' operator. */ | |
285 | static tree wfl_to_string = NULL_TREE; | |
ba179f9f APB |
286 | |
287 | /* The "java.lang" import qualified name. */ | |
288 | static tree java_lang_id = NULL_TREE; | |
09ed0f70 APB |
289 | |
290 | /* The "java.lang.Cloneable" qualified name. */ | |
291 | static tree java_lang_cloneable = NULL_TREE; | |
e04a16fb AG |
292 | %} |
293 | ||
294 | %union { | |
295 | tree node; | |
296 | int sub_token; | |
297 | struct { | |
298 | int token; | |
299 | int location; | |
300 | } operator; | |
301 | int value; | |
302 | } | |
303 | ||
304 | %pure_parser | |
305 | ||
306 | /* Things defined here have to match the order of what's in the | |
307 | binop_lookup table. */ | |
308 | ||
309 | %token PLUS_TK MINUS_TK MULT_TK DIV_TK REM_TK | |
310 | %token LS_TK SRS_TK ZRS_TK | |
311 | %token AND_TK XOR_TK OR_TK | |
312 | %token BOOL_AND_TK BOOL_OR_TK | |
313 | %token EQ_TK NEQ_TK GT_TK GTE_TK LT_TK LTE_TK | |
314 | ||
315 | /* This maps to the same binop_lookup entry than the token above */ | |
316 | ||
317 | %token PLUS_ASSIGN_TK MINUS_ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK | |
318 | %token REM_ASSIGN_TK | |
319 | %token LS_ASSIGN_TK SRS_ASSIGN_TK ZRS_ASSIGN_TK | |
320 | %token AND_ASSIGN_TK XOR_ASSIGN_TK OR_ASSIGN_TK | |
321 | ||
322 | ||
323 | /* Modifier TOKEN have to be kept in this order. Don't scramble it */ | |
324 | ||
325 | %token PUBLIC_TK PRIVATE_TK PROTECTED_TK | |
326 | %token STATIC_TK FINAL_TK SYNCHRONIZED_TK | |
327 | %token VOLATILE_TK TRANSIENT_TK NATIVE_TK | |
328 | %token PAD_TK ABSTRACT_TK MODIFIER_TK | |
329 | ||
330 | /* Keep those two in order, too */ | |
331 | %token DECR_TK INCR_TK | |
332 | ||
333 | /* From now one, things can be in any order */ | |
334 | ||
335 | %token DEFAULT_TK IF_TK THROW_TK | |
336 | %token BOOLEAN_TK DO_TK IMPLEMENTS_TK | |
337 | %token THROWS_TK BREAK_TK IMPORT_TK | |
338 | %token ELSE_TK INSTANCEOF_TK RETURN_TK | |
339 | %token VOID_TK CATCH_TK INTERFACE_TK | |
340 | %token CASE_TK EXTENDS_TK FINALLY_TK | |
341 | %token SUPER_TK WHILE_TK CLASS_TK | |
342 | %token SWITCH_TK CONST_TK TRY_TK | |
343 | %token FOR_TK NEW_TK CONTINUE_TK | |
344 | %token GOTO_TK PACKAGE_TK THIS_TK | |
345 | ||
346 | %token BYTE_TK SHORT_TK INT_TK LONG_TK | |
347 | %token CHAR_TK INTEGRAL_TK | |
348 | ||
349 | %token FLOAT_TK DOUBLE_TK FP_TK | |
350 | ||
351 | %token ID_TK | |
352 | ||
353 | %token REL_QM_TK REL_CL_TK NOT_TK NEG_TK | |
354 | ||
355 | %token ASSIGN_ANY_TK ASSIGN_TK | |
356 | %token OP_TK CP_TK OCB_TK CCB_TK OSB_TK CSB_TK SC_TK C_TK DOT_TK | |
357 | ||
358 | %token STRING_LIT_TK CHAR_LIT_TK INT_LIT_TK FP_LIT_TK | |
359 | %token TRUE_TK FALSE_TK BOOL_LIT_TK NULL_TK | |
360 | ||
361 | %type <value> modifiers MODIFIER_TK | |
362 | ||
363 | %type <node> super ID_TK identifier | |
364 | %type <node> name simple_name qualified_name | |
365 | %type <node> class_declaration type_declaration compilation_unit | |
366 | field_declaration method_declaration extends_interfaces | |
367 | interfaces interface_type_list | |
368 | interface_declaration class_member_declaration | |
369 | import_declarations package_declaration | |
370 | type_declarations interface_body | |
371 | interface_member_declaration constant_declaration | |
372 | interface_member_declarations interface_type | |
373 | abstract_method_declaration interface_type_list | |
374 | %type <node> class_body_declaration class_member_declaration | |
375 | static_initializer constructor_declaration block | |
22eed1e6 | 376 | %type <node> class_body_declarations constructor_header |
e04a16fb AG |
377 | %type <node> class_or_interface_type class_type class_type_list |
378 | constructor_declarator explicit_constructor_invocation | |
b9f7e36c | 379 | %type <node> dim_expr dim_exprs this_or_super throws |
e04a16fb AG |
380 | |
381 | %type <node> variable_declarator_id variable_declarator | |
382 | variable_declarators variable_initializer | |
22eed1e6 | 383 | variable_initializers constructor_body |
ac825856 | 384 | array_initializer |
e04a16fb | 385 | |
22eed1e6 | 386 | %type <node> class_body block_end |
e04a16fb AG |
387 | %type <node> statement statement_without_trailing_substatement |
388 | labeled_statement if_then_statement label_decl | |
389 | if_then_else_statement while_statement for_statement | |
390 | statement_nsi labeled_statement_nsi do_statement | |
391 | if_then_else_statement_nsi while_statement_nsi | |
392 | for_statement_nsi statement_expression_list for_init | |
393 | for_update statement_expression expression_statement | |
394 | primary_no_new_array expression primary | |
395 | array_creation_expression array_type | |
396 | class_instance_creation_expression field_access | |
397 | method_invocation array_access something_dot_new | |
398 | argument_list postfix_expression while_expression | |
399 | post_increment_expression post_decrement_expression | |
400 | unary_expression_not_plus_minus unary_expression | |
401 | pre_increment_expression pre_decrement_expression | |
402 | unary_expression_not_plus_minus cast_expression | |
403 | multiplicative_expression additive_expression | |
404 | shift_expression relational_expression | |
405 | equality_expression and_expression | |
406 | exclusive_or_expression inclusive_or_expression | |
407 | conditional_and_expression conditional_or_expression | |
408 | conditional_expression assignment_expression | |
409 | left_hand_side assignment for_header for_begin | |
410 | constant_expression do_statement_begin empty_statement | |
b67d701b | 411 | switch_statement synchronized_statement throw_statement |
f8976021 | 412 | try_statement switch_expression switch_block |
15fdcfe9 | 413 | catches catch_clause catch_clause_parameter finally |
e04a16fb AG |
414 | %type <node> return_statement break_statement continue_statement |
415 | ||
416 | %type <operator> ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK | |
417 | %type <operator> REM_ASSIGN_TK PLUS_ASSIGN_TK MINUS_ASSIGN_TK | |
418 | %type <operator> LS_ASSIGN_TK SRS_ASSIGN_TK ZRS_ASSIGN_TK | |
419 | %type <operator> AND_ASSIGN_TK XOR_ASSIGN_TK OR_ASSIGN_TK | |
420 | %type <operator> ASSIGN_ANY_TK assignment_operator | |
421 | %token <operator> EQ_TK GTE_TK ZRS_TK SRS_TK GT_TK LTE_TK LS_TK | |
422 | %token <operator> BOOL_AND_TK AND_TK BOOL_OR_TK OR_TK INCR_TK PLUS_TK | |
423 | %token <operator> DECR_TK MINUS_TK MULT_TK DIV_TK XOR_TK REM_TK NEQ_TK | |
f8976021 | 424 | %token <operator> NEG_TK REL_QM_TK REL_CL_TK NOT_TK LT_TK OCB_TK |
5e942c50 | 425 | %token <operator> OP_TK OSB_TK DOT_TK THROW_TK INSTANCEOF_TK |
b9f7e36c APB |
426 | %type <operator> THIS_TK SUPER_TK RETURN_TK BREAK_TK CONTINUE_TK |
427 | %type <operator> CASE_TK DEFAULT_TK TRY_TK CATCH_TK SYNCHRONIZED_TK | |
e04a16fb AG |
428 | |
429 | %type <node> method_body | |
430 | ||
431 | %type <node> literal INT_LIT_TK FP_LIT_TK BOOL_LIT_TK CHAR_LIT_TK | |
432 | STRING_LIT_TK NULL_TK VOID_TK | |
433 | ||
434 | %type <node> IF_TK WHILE_TK FOR_TK | |
435 | ||
436 | %type <node> formal_parameter_list formal_parameter | |
437 | method_declarator method_header | |
438 | ||
439 | %type <node> primitive_type reference_type type | |
440 | BOOLEAN_TK INTEGRAL_TK FP_TK | |
441 | ||
442 | %% | |
443 | /* 19.2 Production from 2.3: The Syntactic Grammar */ | |
444 | goal: | |
445 | compilation_unit | |
446 | {} | |
447 | ; | |
448 | ||
449 | /* 19.3 Productions from 3: Lexical structure */ | |
450 | literal: | |
451 | INT_LIT_TK | |
452 | | FP_LIT_TK | |
453 | | BOOL_LIT_TK | |
454 | | CHAR_LIT_TK | |
455 | | STRING_LIT_TK | |
456 | | NULL_TK | |
457 | ; | |
458 | ||
459 | /* 19.4 Productions from 4: Types, Values and Variables */ | |
460 | type: | |
461 | primitive_type | |
462 | | reference_type | |
463 | ; | |
464 | ||
465 | primitive_type: | |
466 | INTEGRAL_TK | |
467 | | FP_TK | |
468 | | BOOLEAN_TK | |
469 | ; | |
470 | ||
471 | reference_type: | |
472 | class_or_interface_type | |
473 | | array_type | |
474 | ; | |
475 | ||
476 | class_or_interface_type: | |
477 | name | |
478 | ; | |
479 | ||
480 | class_type: | |
481 | class_or_interface_type /* Default rule */ | |
482 | ; | |
483 | ||
484 | interface_type: | |
485 | class_or_interface_type | |
486 | ; | |
487 | ||
488 | array_type: | |
489 | primitive_type OSB_TK CSB_TK | |
490 | { | |
491 | $$ = build_java_array_type ($1, -1); | |
492 | CLASS_LOADED_P ($$) = 1; | |
493 | } | |
494 | | name OSB_TK CSB_TK | |
495 | { $$ = build_unresolved_array_type ($1); } | |
496 | | array_type OSB_TK CSB_TK | |
497 | { $$ = build_unresolved_array_type ($1); } | |
498 | | primitive_type OSB_TK error | |
499 | {RULE ("']' expected"); RECOVER;} | |
500 | | array_type OSB_TK error | |
501 | {RULE ("']' expected"); RECOVER;} | |
502 | ; | |
503 | ||
504 | /* 19.5 Productions from 6: Names */ | |
505 | name: | |
506 | simple_name /* Default rule */ | |
507 | | qualified_name /* Default rule */ | |
508 | ; | |
509 | ||
510 | simple_name: | |
511 | identifier /* Default rule */ | |
512 | ; | |
513 | ||
514 | qualified_name: | |
515 | name DOT_TK identifier | |
516 | { $$ = make_qualified_name ($1, $3, $2.location); } | |
517 | ; | |
518 | ||
519 | identifier: | |
520 | ID_TK | |
521 | ; | |
522 | ||
523 | /* 19.6: Production from 7: Packages */ | |
524 | compilation_unit: | |
525 | {$$ = NULL;} | |
526 | | package_declaration | |
527 | | import_declarations | |
528 | | type_declarations | |
529 | | package_declaration import_declarations | |
530 | | package_declaration type_declarations | |
531 | | import_declarations type_declarations | |
532 | | package_declaration import_declarations type_declarations | |
533 | ; | |
534 | ||
535 | import_declarations: | |
536 | import_declaration | |
537 | { | |
538 | $$ = NULL; | |
539 | } | |
540 | | import_declarations import_declaration | |
541 | { | |
542 | $$ = NULL; | |
543 | } | |
544 | ; | |
545 | ||
546 | type_declarations: | |
547 | type_declaration | |
548 | | type_declarations type_declaration | |
549 | ; | |
550 | ||
551 | package_declaration: | |
552 | PACKAGE_TK name SC_TK | |
553 | { ctxp->package = EXPR_WFL_NODE ($2); } | |
554 | | PACKAGE_TK error | |
555 | {yyerror ("Missing name"); RECOVER;} | |
556 | | PACKAGE_TK name error | |
557 | {yyerror ("';' expected"); RECOVER;} | |
558 | ; | |
559 | ||
560 | import_declaration: | |
561 | single_type_import_declaration | |
562 | | type_import_on_demand_declaration | |
563 | ; | |
564 | ||
565 | single_type_import_declaration: | |
566 | IMPORT_TK name SC_TK | |
567 | { | |
568 | tree name = EXPR_WFL_NODE ($2), node, last_name; | |
569 | int i = IDENTIFIER_LENGTH (name)-1; | |
570 | char *last = &IDENTIFIER_POINTER (name)[i]; | |
571 | while (last != IDENTIFIER_POINTER (name)) | |
572 | { | |
573 | if (last [0] == '.') | |
574 | break; | |
575 | last--; | |
576 | } | |
577 | last_name = get_identifier (++last); | |
578 | if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (last_name)) | |
579 | { | |
580 | tree err = find_name_in_single_imports (last_name); | |
581 | if (err && err != name) | |
582 | parse_error_context | |
583 | ($2, "Ambiguous class: `%s' and `%s'", | |
584 | IDENTIFIER_POINTER (name), | |
585 | IDENTIFIER_POINTER (err)); | |
5e942c50 APB |
586 | else |
587 | REGISTER_IMPORT ($2, last_name) | |
e04a16fb AG |
588 | } |
589 | else | |
5e942c50 | 590 | REGISTER_IMPORT ($2, last_name); |
e04a16fb AG |
591 | } |
592 | | IMPORT_TK error | |
593 | {yyerror ("Missing name"); RECOVER;} | |
594 | | IMPORT_TK name error | |
595 | {yyerror ("';' expected"); RECOVER;} | |
596 | ; | |
597 | ||
598 | type_import_on_demand_declaration: | |
599 | IMPORT_TK name DOT_TK MULT_TK SC_TK | |
600 | { | |
601 | tree name = EXPR_WFL_NODE ($2); | |
ba179f9f APB |
602 | /* Don't import java.lang.* twice. */ |
603 | if (name != java_lang_id) | |
604 | { | |
605 | tree node = build_tree_list ($2, NULL_TREE); | |
606 | read_import_dir ($2); | |
607 | TREE_CHAIN (node) = ctxp->import_demand_list; | |
608 | ctxp->import_demand_list = node; | |
609 | } | |
e04a16fb AG |
610 | } |
611 | | IMPORT_TK name DOT_TK error | |
612 | {yyerror ("'*' expected"); RECOVER;} | |
613 | | IMPORT_TK name DOT_TK MULT_TK error | |
614 | {yyerror ("';' expected"); RECOVER;} | |
615 | ; | |
616 | ||
617 | type_declaration: | |
618 | class_declaration | |
619 | { | |
22eed1e6 | 620 | maybe_generate_finit (); |
7525cc04 | 621 | maybe_generate_clinit (); |
e04a16fb AG |
622 | $$ = $1; |
623 | } | |
624 | | interface_declaration | |
625 | | SC_TK | |
626 | { $$ = NULL; } | |
627 | | error | |
628 | { | |
629 | YYERROR_NOW; | |
630 | yyerror ("Class or interface declaration expected"); | |
631 | } | |
632 | ; | |
633 | ||
634 | /* 19.7 Shortened from the original: | |
635 | modifiers: modifier | modifiers modifier | |
636 | modifier: any of public... */ | |
637 | modifiers: | |
638 | MODIFIER_TK | |
639 | { | |
640 | $$ = (1 << $1); | |
641 | } | |
642 | | modifiers MODIFIER_TK | |
643 | { | |
644 | int acc = (1 << $2); | |
645 | if ($$ & acc) | |
646 | parse_error_context | |
647 | (ctxp->modifier_ctx [$2], "Modifier `%s' declared twice", | |
648 | java_accstring_lookup (acc)); | |
649 | else | |
650 | { | |
651 | $$ |= acc; | |
652 | } | |
653 | } | |
654 | ; | |
655 | ||
656 | /* 19.8.1 Production from $8.1: Class Declaration */ | |
657 | class_declaration: | |
658 | modifiers CLASS_TK identifier super interfaces | |
659 | { create_class ($1, $3, $4, $5); } | |
660 | class_body | |
661 | { | |
662 | $$ = $7; | |
663 | } | |
664 | | CLASS_TK identifier super interfaces | |
665 | { create_class (0, $2, $3, $4); } | |
666 | class_body | |
667 | { | |
668 | $$ = $6; | |
669 | } | |
670 | | modifiers CLASS_TK error | |
671 | {yyerror ("Missing class name"); RECOVER;} | |
672 | | CLASS_TK error | |
673 | {yyerror ("Missing class name"); RECOVER;} | |
674 | | CLASS_TK identifier error | |
0b4d333e APB |
675 | { |
676 | if (!ctxp->class_err) yyerror ("'{' expected"); | |
677 | DRECOVER(class1); | |
678 | } | |
e04a16fb AG |
679 | | modifiers CLASS_TK identifier error |
680 | {if (!ctxp->class_err) yyerror ("'{' expected"); RECOVER;} | |
681 | ; | |
682 | ||
683 | super: | |
684 | { $$ = NULL; } | |
685 | | EXTENDS_TK class_type | |
686 | { $$ = $2; } | |
687 | | EXTENDS_TK class_type error | |
688 | {yyerror ("'{' expected"); ctxp->class_err=1;} | |
689 | | EXTENDS_TK error | |
690 | {yyerror ("Missing super class name"); ctxp->class_err=1;} | |
691 | ; | |
692 | ||
693 | interfaces: | |
694 | { $$ = NULL_TREE; } | |
695 | | IMPLEMENTS_TK interface_type_list | |
696 | { $$ = $2; } | |
697 | | IMPLEMENTS_TK error | |
698 | { | |
699 | ctxp->class_err=1; | |
700 | yyerror ("Missing interface name"); | |
701 | } | |
702 | ; | |
703 | ||
704 | interface_type_list: | |
705 | interface_type | |
706 | { | |
707 | ctxp->interface_number = 1; | |
708 | $$ = build_tree_list ($1, NULL_TREE); | |
709 | } | |
710 | | interface_type_list C_TK interface_type | |
711 | { | |
712 | ctxp->interface_number++; | |
713 | $$ = chainon ($1, build_tree_list ($3, NULL_TREE)); | |
714 | } | |
715 | | interface_type_list C_TK error | |
716 | {yyerror ("Missing interface name"); RECOVER;} | |
717 | ; | |
718 | ||
719 | class_body: | |
720 | OCB_TK CCB_TK | |
721 | { $$ = ctxp->current_parsed_class; } | |
722 | | OCB_TK class_body_declarations CCB_TK | |
723 | { $$ = ctxp->current_parsed_class; } | |
724 | ; | |
725 | ||
726 | class_body_declarations: | |
727 | class_body_declaration | |
728 | | class_body_declarations class_body_declaration | |
729 | ; | |
730 | ||
731 | class_body_declaration: | |
732 | class_member_declaration | |
733 | | static_initializer | |
734 | | constructor_declaration | |
735 | | block /* Added, JDK1.1, instance initializer */ | |
b67d701b | 736 | { $$ = parse_jdk1_1_error ("instance initializer"); } |
e04a16fb AG |
737 | ; |
738 | ||
739 | class_member_declaration: | |
740 | field_declaration | |
0b4d333e APB |
741 | | field_declaration SC_TK |
742 | { $$ = $1; } | |
e04a16fb AG |
743 | | method_declaration |
744 | | class_declaration /* Added, JDK1.1 inner classes */ | |
b67d701b | 745 | { $$ = parse_jdk1_1_error ("inner classe declaration"); } |
e04a16fb | 746 | | interface_declaration /* Added, JDK1.1 inner classes */ |
b67d701b | 747 | { $$ = parse_jdk1_1_error ("inner interface declaration"); } |
e04a16fb AG |
748 | ; |
749 | ||
750 | /* 19.8.2 Productions from 8.3: Field Declarations */ | |
751 | field_declaration: | |
752 | type variable_declarators SC_TK | |
753 | { register_fields (0, $1, $2); } | |
754 | | modifiers type variable_declarators SC_TK | |
755 | { | |
e04a16fb AG |
756 | check_modifiers |
757 | ("Illegal modifier `%s' for field declaration", | |
758 | $1, FIELD_MODIFIERS); | |
759 | check_modifiers_consistency ($1); | |
760 | register_fields ($1, $2, $3); | |
761 | } | |
762 | ; | |
763 | ||
764 | variable_declarators: | |
765 | /* Should we use build_decl_list () instead ? FIXME */ | |
766 | variable_declarator /* Default rule */ | |
767 | | variable_declarators C_TK variable_declarator | |
768 | { $$ = chainon ($1, $3); } | |
769 | | variable_declarators C_TK error | |
770 | {yyerror ("Missing term"); RECOVER;} | |
771 | ; | |
772 | ||
773 | variable_declarator: | |
774 | variable_declarator_id | |
775 | { $$ = build_tree_list ($1, NULL_TREE); } | |
776 | | variable_declarator_id ASSIGN_TK variable_initializer | |
777 | { | |
778 | if (java_error_count) | |
779 | $3 = NULL_TREE; | |
780 | $$ = build_tree_list | |
781 | ($1, build_assignment ($2.token, $2.location, $1, $3)); | |
782 | } | |
783 | | variable_declarator_id ASSIGN_TK error | |
784 | { | |
785 | yyerror ("Missing variable initializer"); | |
786 | $$ = build_tree_list ($1, NULL_TREE); | |
787 | RECOVER; | |
788 | } | |
789 | | variable_declarator_id ASSIGN_TK variable_initializer error | |
790 | { | |
791 | yyerror ("';' expected"); | |
792 | $$ = build_tree_list ($1, NULL_TREE); | |
793 | RECOVER; | |
794 | } | |
795 | ; | |
796 | ||
797 | variable_declarator_id: | |
798 | identifier | |
799 | | variable_declarator_id OSB_TK CSB_TK | |
c583dd46 | 800 | { $$ = build_unresolved_array_type ($1); } |
e04a16fb AG |
801 | | identifier error |
802 | {yyerror ("Invalid declaration"); DRECOVER(vdi);} | |
803 | | variable_declarator_id OSB_TK error | |
804 | {yyerror ("']' expected"); DRECOVER(vdi);} | |
805 | | variable_declarator_id CSB_TK error | |
806 | {yyerror ("Unbalanced ']'"); DRECOVER(vdi);} | |
807 | ; | |
808 | ||
809 | variable_initializer: | |
810 | expression | |
811 | | array_initializer | |
e04a16fb AG |
812 | ; |
813 | ||
814 | /* 19.8.3 Productions from 8.4: Method Declarations */ | |
815 | method_declaration: | |
816 | method_header | |
817 | { | |
818 | current_function_decl = $1; | |
819 | source_start_java_method (current_function_decl); | |
820 | } | |
821 | method_body | |
22eed1e6 | 822 | { complete_method_declaration ($3); } |
e04a16fb AG |
823 | | method_header error |
824 | {YYNOT_TWICE yyerror ("'{' expected"); RECOVER;} | |
825 | ; | |
826 | ||
827 | method_header: | |
828 | type method_declarator throws | |
b9f7e36c | 829 | { $$ = method_header (0, $1, $2, $3); } |
e04a16fb | 830 | | VOID_TK method_declarator throws |
b9f7e36c | 831 | { $$ = method_header (0, void_type_node, $2, $3); } |
e04a16fb | 832 | | modifiers type method_declarator throws |
b9f7e36c | 833 | { $$ = method_header ($1, $2, $3, $4); } |
e04a16fb | 834 | | modifiers VOID_TK method_declarator throws |
b9f7e36c | 835 | { $$ = method_header ($1, void_type_node, $3, $4); } |
e04a16fb AG |
836 | | type error |
837 | {RECOVER;} | |
838 | | modifiers type error | |
839 | {RECOVER;} | |
840 | | VOID_TK error | |
841 | {yyerror ("Identifier expected"); RECOVER;} | |
842 | | modifiers VOID_TK error | |
843 | {yyerror ("Identifier expected"); RECOVER;} | |
844 | | modifiers error | |
845 | { | |
846 | yyerror ("Invalid method declaration, return type required"); | |
847 | RECOVER; | |
848 | } | |
849 | ; | |
850 | ||
851 | method_declarator: | |
852 | identifier OP_TK CP_TK | |
853 | { $$ = method_declarator ($1, NULL_TREE); } | |
854 | | identifier OP_TK formal_parameter_list CP_TK | |
855 | { $$ = method_declarator ($1, $3); } | |
856 | | method_declarator OSB_TK CSB_TK | |
857 | { | |
1886c9d8 APB |
858 | EXPR_WFL_LINECOL (wfl_operator) = $2.location; |
859 | TREE_PURPOSE ($1) = | |
860 | build_unresolved_array_type (TREE_PURPOSE ($1)); | |
861 | parse_warning_context | |
862 | (wfl_operator, | |
863 | "Discouraged form of returned type specification"); | |
e04a16fb AG |
864 | } |
865 | | identifier OP_TK error | |
866 | {yyerror ("')' expected"); DRECOVER(method_declarator);} | |
867 | | method_declarator OSB_TK error | |
868 | {yyerror ("']' expected"); RECOVER;} | |
869 | ; | |
870 | ||
871 | formal_parameter_list: | |
872 | formal_parameter | |
873 | { | |
874 | ctxp->formal_parameter_number = 1; | |
875 | } | |
876 | | formal_parameter_list C_TK formal_parameter | |
877 | { | |
878 | ctxp->formal_parameter_number += 1; | |
879 | $$ = chainon ($1, $3); | |
880 | } | |
881 | | formal_parameter_list C_TK error | |
882 | {yyerror ("Missing formal parameter term"); RECOVER;} | |
883 | ; | |
884 | ||
885 | formal_parameter: | |
886 | type variable_declarator_id | |
887 | { | |
888 | $$ = build_tree_list ($2, $1); | |
889 | } | |
c877974e APB |
890 | | modifiers type variable_declarator_id /* Added, JDK1.1 final parms */ |
891 | { $$ = parse_jdk1_1_error ("final parameters"); } | |
e04a16fb AG |
892 | | type error |
893 | {yyerror ("Missing identifier"); RECOVER;} | |
894 | | modifiers type error | |
895 | { | |
896 | SOURCE_FRONTEND_DEBUG (("Modifiers: %d", $1)); | |
897 | yyerror ("Missing identifier"); RECOVER; | |
898 | } | |
899 | ; | |
900 | ||
901 | throws: | |
b9f7e36c | 902 | { $$ = NULL_TREE; } |
e04a16fb | 903 | | THROWS_TK class_type_list |
b9f7e36c | 904 | { $$ = $2; } |
e04a16fb AG |
905 | | THROWS_TK error |
906 | {yyerror ("Missing class type term"); RECOVER;} | |
907 | ; | |
908 | ||
909 | class_type_list: | |
910 | class_type | |
c877974e | 911 | { $$ = build_tree_list ($1, $1); } |
e04a16fb | 912 | | class_type_list C_TK class_type |
c877974e | 913 | { $$ = tree_cons ($3, $3, $1); } |
e04a16fb AG |
914 | | class_type_list C_TK error |
915 | {yyerror ("Missing class type term"); RECOVER;} | |
916 | ; | |
917 | ||
918 | method_body: | |
919 | block | |
920 | | block SC_TK | |
921 | | SC_TK | |
922 | { $$ = NULL_TREE; } /* Probably not the right thing to do. */ | |
923 | ; | |
924 | ||
925 | /* 19.8.4 Productions from 8.5: Static Initializers */ | |
926 | static_initializer: | |
927 | static block | |
928 | { | |
929 | RULE ("STATIC_INITIALIZER"); | |
930 | } | |
931 | | static block SC_TK /* Shouldn't be here. FIXME */ | |
932 | { | |
933 | RULE ("STATIC_INITIALIZER"); | |
934 | } | |
935 | ; | |
936 | ||
937 | static: /* Test lval.sub_token here */ | |
938 | MODIFIER_TK | |
939 | { | |
940 | SOURCE_FRONTEND_DEBUG (("Modifiers: %d", $1)); | |
941 | } | |
942 | ; | |
943 | ||
944 | /* 19.8.5 Productions from 8.6: Constructor Declarations */ | |
e04a16fb | 945 | constructor_declaration: |
22eed1e6 | 946 | constructor_header |
e04a16fb | 947 | { |
22eed1e6 APB |
948 | current_function_decl = $1; |
949 | source_start_java_method (current_function_decl); | |
e04a16fb | 950 | } |
22eed1e6 APB |
951 | constructor_body |
952 | { complete_method_declaration ($3); } | |
953 | ; | |
954 | ||
955 | constructor_header: | |
956 | constructor_declarator throws | |
957 | { $$ = method_header (0, NULL_TREE, $1, $2); } | |
958 | | modifiers constructor_declarator throws | |
959 | { $$ = method_header ($1, NULL_TREE, $2, $3); } | |
e04a16fb AG |
960 | ; |
961 | ||
962 | constructor_declarator: | |
963 | simple_name OP_TK CP_TK | |
22eed1e6 | 964 | { $$ = method_declarator ($1, NULL_TREE); } |
e04a16fb | 965 | | simple_name OP_TK formal_parameter_list CP_TK |
22eed1e6 | 966 | { $$ = method_declarator ($1, $3); } |
e04a16fb AG |
967 | ; |
968 | ||
969 | constructor_body: | |
22eed1e6 APB |
970 | /* Unlike regular method, we always need a complete (empty) |
971 | body so we can safely perform all the required code | |
972 | addition (super invocation and field initialization) */ | |
973 | block_begin block_end | |
974 | { | |
9bbc7d9f | 975 | BLOCK_EXPR_BODY ($2) = empty_stmt_node; |
22eed1e6 APB |
976 | $$ = $2; |
977 | } | |
978 | | block_begin explicit_constructor_invocation block_end | |
979 | { $$ = $3; } | |
980 | | block_begin block_statements block_end | |
981 | { $$ = $3; } | |
982 | | block_begin explicit_constructor_invocation block_statements block_end | |
983 | { $$ = $4; } | |
e04a16fb AG |
984 | ; |
985 | ||
986 | /* Error recovery for that rule moved down expression_statement: rule. */ | |
987 | explicit_constructor_invocation: | |
988 | this_or_super OP_TK CP_TK SC_TK | |
22eed1e6 APB |
989 | { |
990 | $$ = build_method_invocation ($1, NULL_TREE); | |
991 | $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$); | |
992 | $$ = java_method_add_stmt (current_function_decl, $$); | |
993 | } | |
e04a16fb | 994 | | this_or_super OP_TK argument_list CP_TK SC_TK |
22eed1e6 APB |
995 | { |
996 | $$ = build_method_invocation ($1, $3); | |
997 | $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$); | |
998 | $$ = java_method_add_stmt (current_function_decl, $$); | |
999 | } | |
e04a16fb AG |
1000 | /* Added, JDK1.1 inner classes. Modified because the rule |
1001 | 'primary' couldn't work. */ | |
1002 | | name DOT_TK SUPER_TK OP_TK argument_list CP_TK SC_TK | |
b67d701b | 1003 | {$$ = parse_jdk1_1_error ("explicit constructor invocation"); } |
e04a16fb | 1004 | | name DOT_TK SUPER_TK OP_TK CP_TK SC_TK |
b67d701b | 1005 | {$$ = parse_jdk1_1_error ("explicit constructor invocation"); } |
e04a16fb AG |
1006 | ; |
1007 | ||
1008 | this_or_super: /* Added, simplifies error diagnostics */ | |
1009 | THIS_TK | |
1010 | { | |
b67d701b PB |
1011 | tree wfl = build_wfl_node (this_identifier_node, |
1012 | input_filename, 0, 0); | |
e04a16fb AG |
1013 | EXPR_WFL_LINECOL (wfl) = $1.location; |
1014 | $$ = wfl; | |
1015 | } | |
1016 | | SUPER_TK | |
1017 | { | |
b67d701b PB |
1018 | tree wfl = build_wfl_node (super_identifier_node, |
1019 | input_filename, 0, 0); | |
e04a16fb AG |
1020 | EXPR_WFL_LINECOL (wfl) = $1.location; |
1021 | $$ = wfl; | |
1022 | } | |
1023 | ; | |
1024 | ||
1025 | /* 19.9 Productions from 9: Interfaces */ | |
1026 | /* 19.9.1 Productions from 9.1: Interfaces Declarations */ | |
1027 | interface_declaration: | |
1028 | INTERFACE_TK identifier | |
1029 | { create_interface (0, $2, NULL_TREE); } | |
1030 | interface_body | |
1031 | { | |
1032 | $$ = $4; | |
1033 | } | |
1034 | | modifiers INTERFACE_TK identifier | |
1035 | { create_interface ($1, $3, NULL_TREE); } | |
1036 | interface_body | |
1037 | { | |
1038 | $$ = $5; | |
1039 | } | |
1040 | | INTERFACE_TK identifier extends_interfaces | |
1041 | { create_interface (0, $2, $3); } | |
1042 | interface_body | |
1043 | { | |
1044 | $$ = $5; | |
1045 | } | |
1046 | | modifiers INTERFACE_TK identifier extends_interfaces | |
1047 | { create_interface ($1, $3, $4); } | |
1048 | interface_body | |
1049 | { | |
1050 | $$ = $6; | |
1051 | } | |
1052 | | INTERFACE_TK identifier error | |
0b4d333e | 1053 | {yyerror ("'{' expected"); RECOVER;} |
e04a16fb | 1054 | | modifiers INTERFACE_TK identifier error |
0b4d333e | 1055 | {yyerror ("'{' expected"); RECOVER;} |
e04a16fb AG |
1056 | ; |
1057 | ||
1058 | extends_interfaces: | |
1059 | EXTENDS_TK interface_type | |
1060 | { | |
1061 | ctxp->interface_number = 1; | |
1062 | $$ = build_tree_list ($2, NULL_TREE); | |
1063 | } | |
1064 | | extends_interfaces C_TK interface_type | |
1065 | { | |
1066 | ctxp->interface_number++; | |
1067 | $$ = chainon ($1, build_tree_list ($3, NULL_TREE)); | |
1068 | } | |
1069 | | EXTENDS_TK error | |
1070 | {yyerror ("Invalid interface type"); RECOVER;} | |
1071 | | extends_interfaces C_TK error | |
1072 | {yyerror ("Missing term"); RECOVER;} | |
1073 | ; | |
1074 | ||
1075 | interface_body: | |
1076 | OCB_TK CCB_TK | |
1077 | { $$ = NULL_TREE; } | |
1078 | | OCB_TK interface_member_declarations CCB_TK | |
1079 | { $$ = NULL_TREE; } | |
1080 | ; | |
1081 | ||
1082 | interface_member_declarations: | |
1083 | interface_member_declaration | |
1084 | | interface_member_declarations interface_member_declaration | |
1085 | ; | |
1086 | ||
1087 | interface_member_declaration: | |
1088 | constant_declaration | |
1089 | | abstract_method_declaration | |
1090 | | class_declaration /* Added, JDK1.1 inner classes */ | |
b67d701b | 1091 | { $$ = parse_jdk1_1_error ("inner class declaration"); } |
e04a16fb | 1092 | | interface_declaration /* Added, JDK1.1 inner classes */ |
b67d701b | 1093 | { $$ = parse_jdk1_1_error ("inner interface declaration"); } |
e04a16fb AG |
1094 | ; |
1095 | ||
1096 | constant_declaration: | |
1097 | field_declaration | |
1098 | ; | |
1099 | ||
1100 | abstract_method_declaration: | |
1101 | method_header SC_TK | |
1102 | { | |
1103 | check_abstract_method_header ($1); | |
1104 | current_function_decl = NULL_TREE; /* FIXME ? */ | |
1105 | } | |
1106 | | method_header error | |
1107 | {yyerror ("';' expected"); RECOVER;} | |
1108 | ; | |
1109 | ||
1110 | /* 19.10 Productions from 10: Arrays */ | |
1111 | array_initializer: | |
1112 | OCB_TK CCB_TK | |
1179ebc2 | 1113 | { $$ = build_new_array_init ($1.location, NULL_TREE); } |
e04a16fb | 1114 | | OCB_TK variable_initializers CCB_TK |
f8976021 | 1115 | { $$ = build_new_array_init ($1.location, $2); } |
e04a16fb | 1116 | | OCB_TK variable_initializers C_TK CCB_TK |
f8976021 | 1117 | { $$ = build_new_array_init ($1.location, $2); } |
e04a16fb AG |
1118 | ; |
1119 | ||
1120 | variable_initializers: | |
1121 | variable_initializer | |
f8976021 APB |
1122 | { |
1123 | $$ = tree_cons (maybe_build_array_element_wfl ($1), | |
1124 | $1, NULL_TREE); | |
1125 | } | |
e04a16fb | 1126 | | variable_initializers C_TK variable_initializer |
1179ebc2 APB |
1127 | { |
1128 | $$ = tree_cons (maybe_build_array_element_wfl ($3), $3, $1); | |
1129 | } | |
e04a16fb AG |
1130 | | variable_initializers C_TK error |
1131 | {yyerror ("Missing term"); RECOVER;} | |
1132 | ; | |
1133 | ||
1134 | /* 19.11 Production from 14: Blocks and Statements */ | |
1135 | block: | |
1136 | OCB_TK CCB_TK | |
9bbc7d9f | 1137 | { $$ = empty_stmt_node; } |
22eed1e6 APB |
1138 | | block_begin block_statements block_end |
1139 | { $$ = $3; } | |
1140 | ; | |
1141 | ||
1142 | block_begin: | |
1143 | OCB_TK | |
e04a16fb | 1144 | { enter_block (); } |
22eed1e6 APB |
1145 | ; |
1146 | ||
1147 | block_end: | |
e04a16fb AG |
1148 | CCB_TK |
1149 | { | |
1150 | maybe_absorb_scoping_blocks (); | |
1151 | $$ = exit_block (); | |
1152 | } | |
1153 | ; | |
1154 | ||
1155 | block_statements: | |
1156 | block_statement | |
1157 | | block_statements block_statement | |
1158 | ; | |
1159 | ||
1160 | block_statement: | |
1161 | local_variable_declaration_statement | |
1162 | | statement | |
15fdcfe9 | 1163 | { java_method_add_stmt (current_function_decl, $1); } |
e04a16fb | 1164 | | class_declaration /* Added, JDK1.1 inner classes */ |
15fdcfe9 | 1165 | { parse_jdk1_1_error ("inner class declaration"); } |
e04a16fb AG |
1166 | ; |
1167 | ||
1168 | local_variable_declaration_statement: | |
1169 | local_variable_declaration SC_TK /* Can't catch missing ';' here */ | |
1170 | ; | |
1171 | ||
1172 | local_variable_declaration: | |
1173 | type variable_declarators | |
1174 | { declare_local_variables (0, $1, $2); } | |
1175 | | modifiers type variable_declarators /* Added, JDK1.1 final locals */ | |
1176 | { declare_local_variables ($1, $2, $3); } | |
1177 | ; | |
1178 | ||
1179 | statement: | |
1180 | statement_without_trailing_substatement | |
1181 | | labeled_statement | |
e04a16fb | 1182 | | if_then_statement |
e04a16fb | 1183 | | if_then_else_statement |
e04a16fb | 1184 | | while_statement |
e04a16fb AG |
1185 | | for_statement |
1186 | { | |
1187 | /* If the for loop is unlabeled, we must return the | |
1188 | block it was defined it. It our last chance to | |
1189 | get a hold on it. */ | |
1190 | if (!LOOP_HAS_LABEL_P ($$)) | |
1191 | $$ = exit_block (); | |
1192 | } | |
1193 | ; | |
1194 | ||
1195 | statement_nsi: | |
1196 | statement_without_trailing_substatement | |
1197 | | labeled_statement_nsi | |
e04a16fb | 1198 | | if_then_else_statement_nsi |
e04a16fb | 1199 | | while_statement_nsi |
e04a16fb | 1200 | | for_statement_nsi |
e04a16fb AG |
1201 | ; |
1202 | ||
1203 | statement_without_trailing_substatement: | |
1204 | block | |
e04a16fb | 1205 | | empty_statement |
e04a16fb | 1206 | | expression_statement |
e04a16fb | 1207 | | switch_statement |
e04a16fb | 1208 | | do_statement |
e04a16fb | 1209 | | break_statement |
e04a16fb | 1210 | | continue_statement |
e04a16fb AG |
1211 | | return_statement |
1212 | | synchronized_statement | |
e04a16fb | 1213 | | throw_statement |
e04a16fb | 1214 | | try_statement |
e04a16fb AG |
1215 | ; |
1216 | ||
1217 | empty_statement: | |
1218 | SC_TK | |
9bbc7d9f | 1219 | { $$ = empty_stmt_node; } |
e04a16fb AG |
1220 | ; |
1221 | ||
1222 | label_decl: | |
1223 | identifier REL_CL_TK | |
1224 | { | |
1225 | $$ = build_labeled_block (EXPR_WFL_LINECOL ($1), | |
0a2138e2 | 1226 | EXPR_WFL_NODE ($1)); |
e04a16fb AG |
1227 | pushlevel (2); |
1228 | push_labeled_block ($$); | |
1229 | PUSH_LABELED_BLOCK ($$); | |
1230 | } | |
1231 | ; | |
1232 | ||
1233 | labeled_statement: | |
1234 | label_decl statement | |
1235 | { | |
1236 | $$ = complete_labeled_statement ($1, $2); | |
1237 | pop_labeled_block (); | |
1238 | POP_LABELED_BLOCK (); | |
1239 | } | |
1240 | | identifier error | |
1241 | {yyerror ("':' expected"); RECOVER;} | |
1242 | ; | |
1243 | ||
1244 | labeled_statement_nsi: | |
1245 | label_decl statement_nsi | |
1246 | { | |
1247 | $$ = complete_labeled_statement ($1, $2); | |
1248 | pop_labeled_block (); | |
1249 | POP_LABELED_BLOCK (); | |
1250 | } | |
1251 | ; | |
1252 | ||
1253 | /* We concentrate here a bunch of error handling rules that we couldn't write | |
1254 | earlier, because expression_statement catches a missing ';'. */ | |
1255 | expression_statement: | |
1256 | statement_expression SC_TK | |
1257 | { | |
1258 | /* We have a statement. Generate a WFL around it so | |
1259 | we can debug it */ | |
1260 | $$ = build_expr_wfl ($1, input_filename, lineno, 0); | |
1261 | /* We know we have a statement, so set the debug | |
1262 | info to be eventually generate here. */ | |
1263 | $$ = JAVA_MAYBE_GENERATE_DEBUG_INFO ($$); | |
1264 | } | |
1265 | | error SC_TK | |
1266 | { | |
1267 | if (ctxp->prevent_ese != lineno) | |
1268 | yyerror ("Invalid expression statement"); | |
1269 | DRECOVER (expr_stmt); | |
1270 | } | |
1271 | | error OCB_TK | |
1272 | { | |
1273 | if (ctxp->prevent_ese != lineno) | |
1274 | yyerror ("Invalid expression statement"); | |
1275 | DRECOVER (expr_stmt); | |
1276 | } | |
1277 | | error CCB_TK | |
1278 | { | |
1279 | if (ctxp->prevent_ese != lineno) | |
1280 | yyerror ("Invalid expression statement"); | |
1281 | DRECOVER (expr_stmt); | |
1282 | } | |
1283 | | this_or_super OP_TK error | |
1284 | {yyerror ("')' expected"); RECOVER;} | |
1285 | | this_or_super OP_TK CP_TK error | |
22eed1e6 APB |
1286 | { |
1287 | yyerror ("Constructor invocation must be first " | |
1288 | "thing in a constructor"); | |
1289 | RECOVER; | |
1290 | } | |
e04a16fb AG |
1291 | | this_or_super OP_TK argument_list error |
1292 | {yyerror ("')' expected"); RECOVER;} | |
1293 | | this_or_super OP_TK argument_list CP_TK error | |
22eed1e6 APB |
1294 | { |
1295 | yyerror ("Constructor invocation must be first " | |
1296 | "thing in a constructor"); | |
1297 | RECOVER; | |
1298 | } | |
e04a16fb AG |
1299 | | name DOT_TK SUPER_TK error |
1300 | {yyerror ("'(' expected"); RECOVER;} | |
1301 | | name DOT_TK SUPER_TK OP_TK error | |
1302 | {yyerror ("')' expected"); RECOVER;} | |
1303 | | name DOT_TK SUPER_TK OP_TK argument_list error | |
1304 | {yyerror ("')' expected"); RECOVER;} | |
1305 | | name DOT_TK SUPER_TK OP_TK argument_list CP_TK error | |
1306 | {yyerror ("';' expected"); RECOVER;} | |
1307 | | name DOT_TK SUPER_TK OP_TK CP_TK error | |
1308 | {yyerror ("';' expected"); RECOVER;} | |
1309 | ; | |
1310 | ||
1311 | statement_expression: | |
1312 | assignment | |
1313 | | pre_increment_expression | |
e04a16fb | 1314 | | pre_decrement_expression |
e04a16fb | 1315 | | post_increment_expression |
e04a16fb | 1316 | | post_decrement_expression |
e04a16fb AG |
1317 | | method_invocation |
1318 | | class_instance_creation_expression | |
e04a16fb AG |
1319 | ; |
1320 | ||
1321 | if_then_statement: | |
1322 | IF_TK OP_TK expression CP_TK statement | |
1323 | { $$ = build_if_else_statement ($2.location, $3, $5, NULL_TREE); } | |
1324 | | IF_TK error | |
1325 | {yyerror ("'(' expected"); RECOVER;} | |
1326 | | IF_TK OP_TK error | |
1327 | {yyerror ("Missing term"); RECOVER;} | |
1328 | | IF_TK OP_TK expression error | |
1329 | {yyerror ("')' expected"); RECOVER;} | |
1330 | ; | |
1331 | ||
1332 | if_then_else_statement: | |
1333 | IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement | |
1334 | { $$ = build_if_else_statement ($2.location, $3, $5, $7); } | |
1335 | ; | |
1336 | ||
1337 | if_then_else_statement_nsi: | |
1338 | IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement_nsi | |
1339 | { $$ = build_if_else_statement ($2.location, $3, $5, $7); } | |
1340 | ; | |
1341 | ||
1342 | switch_statement: | |
15fdcfe9 PB |
1343 | switch_expression |
1344 | { | |
1345 | enter_block (); | |
1346 | } | |
1347 | switch_block | |
b67d701b | 1348 | { |
15fdcfe9 | 1349 | /* Make into "proper list" of COMPOUND_EXPRs. |
f8976021 APB |
1350 | I.e. make the last statment also have its own |
1351 | COMPOUND_EXPR. */ | |
15fdcfe9 PB |
1352 | maybe_absorb_scoping_blocks (); |
1353 | TREE_OPERAND ($1, 1) = exit_block (); | |
b67d701b PB |
1354 | $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $1); |
1355 | } | |
1356 | ; | |
1357 | ||
1358 | switch_expression: | |
1359 | SWITCH_TK OP_TK expression CP_TK | |
1360 | { | |
1361 | $$ = build (SWITCH_EXPR, NULL_TREE, $3, NULL_TREE); | |
1362 | EXPR_WFL_LINECOL ($$) = $2.location; | |
1363 | } | |
e04a16fb AG |
1364 | | SWITCH_TK error |
1365 | {yyerror ("'(' expected"); RECOVER;} | |
1366 | | SWITCH_TK OP_TK error | |
1367 | {yyerror ("Missing term or ')'"); DRECOVER(switch_statement);} | |
1368 | | SWITCH_TK OP_TK expression CP_TK error | |
1369 | {yyerror ("'{' expected"); RECOVER;} | |
1370 | ; | |
1371 | ||
f8976021 APB |
1372 | /* Default assignment is there to avoid type node on switch_block |
1373 | node. */ | |
1374 | ||
e04a16fb AG |
1375 | switch_block: |
1376 | OCB_TK CCB_TK | |
f8976021 | 1377 | { $$ = NULL_TREE; } |
e04a16fb | 1378 | | OCB_TK switch_labels CCB_TK |
f8976021 | 1379 | { $$ = NULL_TREE; } |
e04a16fb | 1380 | | OCB_TK switch_block_statement_groups CCB_TK |
f8976021 | 1381 | { $$ = NULL_TREE; } |
e04a16fb | 1382 | | OCB_TK switch_block_statement_groups switch_labels CCB_TK |
f8976021 | 1383 | { $$ = NULL_TREE; } |
e04a16fb AG |
1384 | ; |
1385 | ||
1386 | switch_block_statement_groups: | |
1387 | switch_block_statement_group | |
1388 | | switch_block_statement_groups switch_block_statement_group | |
1389 | ; | |
1390 | ||
1391 | switch_block_statement_group: | |
15fdcfe9 | 1392 | switch_labels block_statements |
e04a16fb AG |
1393 | ; |
1394 | ||
e04a16fb AG |
1395 | switch_labels: |
1396 | switch_label | |
1397 | | switch_labels switch_label | |
1398 | ; | |
1399 | ||
1400 | switch_label: | |
1401 | CASE_TK constant_expression REL_CL_TK | |
b67d701b | 1402 | { |
15fdcfe9 PB |
1403 | tree lab = build1 (CASE_EXPR, NULL_TREE, $2); |
1404 | EXPR_WFL_LINECOL (lab) = $1.location; | |
1405 | java_method_add_stmt (current_function_decl, lab); | |
b67d701b | 1406 | } |
e04a16fb | 1407 | | DEFAULT_TK REL_CL_TK |
b67d701b | 1408 | { |
15fdcfe9 PB |
1409 | tree lab = build1 (DEFAULT_EXPR, NULL_TREE, NULL_TREE); |
1410 | EXPR_WFL_LINECOL (lab) = $1.location; | |
1411 | java_method_add_stmt (current_function_decl, lab); | |
b67d701b | 1412 | } |
e04a16fb AG |
1413 | | CASE_TK error |
1414 | {yyerror ("Missing or invalid constant expression"); RECOVER;} | |
1415 | | CASE_TK constant_expression error | |
1416 | {yyerror ("':' expected"); RECOVER;} | |
1417 | | DEFAULT_TK error | |
1418 | {yyerror ("':' expected"); RECOVER;} | |
1419 | ; | |
1420 | ||
1421 | while_expression: | |
1422 | WHILE_TK OP_TK expression CP_TK | |
1423 | { | |
1424 | tree body = build_loop_body ($2.location, $3, 0); | |
1425 | $$ = build_new_loop (body); | |
1426 | } | |
1427 | ; | |
1428 | ||
1429 | while_statement: | |
1430 | while_expression statement | |
1431 | { $$ = complete_loop_body (0, NULL_TREE, $2, 0); } | |
1432 | | WHILE_TK error | |
1433 | {YYERROR_NOW; yyerror ("'(' expected"); RECOVER;} | |
1434 | | WHILE_TK OP_TK error | |
1435 | {yyerror ("Missing term and ')' expected"); RECOVER;} | |
1436 | | WHILE_TK OP_TK expression error | |
1437 | {yyerror ("')' expected"); RECOVER;} | |
1438 | ; | |
1439 | ||
1440 | while_statement_nsi: | |
1441 | while_expression statement_nsi | |
1442 | { $$ = complete_loop_body (0, NULL_TREE, $2, 0); } | |
1443 | ; | |
1444 | ||
1445 | do_statement_begin: | |
1446 | DO_TK | |
1447 | { | |
1448 | tree body = build_loop_body (0, NULL_TREE, 1); | |
1449 | $$ = build_new_loop (body); | |
1450 | } | |
1451 | /* Need error handing here. FIXME */ | |
1452 | ; | |
1453 | ||
1454 | do_statement: | |
1455 | do_statement_begin statement WHILE_TK OP_TK expression CP_TK SC_TK | |
1456 | { $$ = complete_loop_body ($4.location, $5, $2, 1); } | |
1457 | ; | |
1458 | ||
1459 | for_statement: | |
1460 | for_begin SC_TK expression SC_TK for_update CP_TK statement | |
1461 | { $$ = complete_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);} | |
1462 | | for_begin SC_TK SC_TK for_update CP_TK statement | |
1463 | { | |
1464 | $$ = complete_for_loop (0, NULL_TREE, $4, $6); | |
1465 | /* We have not condition, so we get rid of the EXIT_EXPR */ | |
1466 | LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) = | |
9bbc7d9f | 1467 | empty_stmt_node; |
e04a16fb AG |
1468 | } |
1469 | | for_begin SC_TK error | |
1470 | {yyerror ("Invalid control expression"); RECOVER;} | |
1471 | | for_begin SC_TK expression SC_TK error | |
1472 | {yyerror ("Invalid update expression"); RECOVER;} | |
1473 | | for_begin SC_TK SC_TK error | |
1474 | {yyerror ("Invalid update expression"); RECOVER;} | |
1475 | ; | |
1476 | ||
1477 | for_statement_nsi: | |
1478 | for_begin SC_TK expression SC_TK for_update CP_TK statement_nsi | |
1479 | { $$ = complete_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);} | |
1480 | | for_begin SC_TK SC_TK for_update CP_TK statement_nsi | |
1481 | { | |
1482 | $$ = complete_for_loop (0, NULL_TREE, $4, $6); | |
1483 | /* We have not condition, so we get rid of the EXIT_EXPR */ | |
1484 | LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) = | |
9bbc7d9f | 1485 | empty_stmt_node; |
e04a16fb AG |
1486 | } |
1487 | ; | |
1488 | ||
1489 | for_header: | |
1490 | FOR_TK OP_TK | |
1491 | { | |
1492 | /* This scope defined for local variable that may be | |
1493 | defined within the scope of the for loop */ | |
1494 | enter_block (); | |
1495 | } | |
1496 | | FOR_TK error | |
1497 | {yyerror ("'(' expected"); DRECOVER(for_1);} | |
1498 | | FOR_TK OP_TK error | |
1499 | {yyerror ("Invalid init statement"); RECOVER;} | |
1500 | ; | |
1501 | ||
1502 | for_begin: | |
1503 | for_header for_init | |
1504 | { | |
1505 | /* We now declare the loop body. The loop is | |
1506 | declared as a for loop. */ | |
1507 | tree body = build_loop_body (0, NULL_TREE, 0); | |
1508 | $$ = build_new_loop (body); | |
1509 | IS_FOR_LOOP_P ($$) = 1; | |
1510 | /* The loop is added to the current block the for | |
1511 | statement is defined within */ | |
1512 | java_method_add_stmt (current_function_decl, $$); | |
1513 | } | |
1514 | ; | |
1515 | for_init: /* Can be empty */ | |
9bbc7d9f | 1516 | { $$ = empty_stmt_node; } |
e04a16fb AG |
1517 | | statement_expression_list |
1518 | { | |
1519 | /* Init statement recorded within the previously | |
1520 | defined block scope */ | |
1521 | $$ = java_method_add_stmt (current_function_decl, $1); | |
1522 | } | |
1523 | | local_variable_declaration | |
1524 | { | |
1525 | /* Local variable are recorded within the previously | |
1526 | defined block scope */ | |
1527 | $$ = NULL_TREE; | |
1528 | } | |
1529 | | statement_expression_list error | |
1530 | {yyerror ("';' expected"); DRECOVER(for_init_1);} | |
1531 | ; | |
1532 | ||
1533 | for_update: /* Can be empty */ | |
9bbc7d9f | 1534 | {$$ = empty_stmt_node;} |
e04a16fb AG |
1535 | | statement_expression_list |
1536 | { $$ = build_debugable_stmt (BUILD_LOCATION (), $1); } | |
1537 | ; | |
1538 | ||
1539 | statement_expression_list: | |
1540 | statement_expression | |
1541 | { $$ = add_stmt_to_compound (NULL_TREE, NULL_TREE, $1); } | |
1542 | | statement_expression_list C_TK statement_expression | |
1543 | { $$ = add_stmt_to_compound ($1, NULL_TREE, $3); } | |
1544 | | statement_expression_list C_TK error | |
1545 | {yyerror ("Missing term"); RECOVER;} | |
1546 | ; | |
1547 | ||
1548 | break_statement: | |
1549 | BREAK_TK SC_TK | |
1550 | { $$ = build_bc_statement ($1.location, 1, NULL_TREE); } | |
1551 | | BREAK_TK identifier SC_TK | |
1552 | { $$ = build_bc_statement ($1.location, 1, $2); } | |
1553 | | BREAK_TK error | |
1554 | {yyerror ("Missing term"); RECOVER;} | |
1555 | | BREAK_TK identifier error | |
1556 | {yyerror ("';' expected"); RECOVER;} | |
1557 | ; | |
1558 | ||
1559 | continue_statement: | |
1560 | CONTINUE_TK SC_TK | |
1561 | { $$ = build_bc_statement ($1.location, 0, NULL_TREE); } | |
1562 | | CONTINUE_TK identifier SC_TK | |
1563 | { $$ = build_bc_statement ($1.location, 0, $2); } | |
1564 | | CONTINUE_TK error | |
1565 | {yyerror ("Missing term"); RECOVER;} | |
1566 | | CONTINUE_TK identifier error | |
1567 | {yyerror ("';' expected"); RECOVER;} | |
1568 | ; | |
1569 | ||
1570 | return_statement: | |
1571 | RETURN_TK SC_TK | |
1572 | { $$ = build_return ($1.location, NULL_TREE); } | |
1573 | | RETURN_TK expression SC_TK | |
1574 | { $$ = build_return ($1.location, $2); } | |
1575 | | RETURN_TK error | |
1576 | {yyerror ("Missing term"); RECOVER;} | |
1577 | | RETURN_TK expression error | |
1578 | {yyerror ("';' expected"); RECOVER;} | |
1579 | ; | |
1580 | ||
1581 | throw_statement: | |
1582 | THROW_TK expression SC_TK | |
b9f7e36c APB |
1583 | { |
1584 | $$ = build1 (THROW_EXPR, NULL_TREE, $2); | |
1585 | EXPR_WFL_LINECOL ($$) = $1.location; | |
1586 | } | |
e04a16fb AG |
1587 | | THROW_TK error |
1588 | {yyerror ("Missing term"); RECOVER;} | |
1589 | | THROW_TK expression error | |
1590 | {yyerror ("';' expected"); RECOVER;} | |
1591 | ; | |
1592 | ||
1593 | synchronized_statement: | |
1594 | synchronized OP_TK expression CP_TK block | |
b9f7e36c APB |
1595 | { |
1596 | $$ = build (SYNCHRONIZED_EXPR, NULL_TREE, $3, $5); | |
1597 | EXPR_WFL_LINECOL ($$) = | |
1598 | EXPR_WFL_LINECOL (MODIFIER_WFL (SYNCHRONIZED_TK)); | |
1599 | } | |
e04a16fb AG |
1600 | | synchronized OP_TK expression CP_TK error |
1601 | {yyerror ("'{' expected"); RECOVER;} | |
1602 | | synchronized error | |
1603 | {yyerror ("'(' expected"); RECOVER;} | |
1604 | | synchronized OP_TK error CP_TK | |
1605 | {yyerror ("Missing term"); RECOVER;} | |
1606 | | synchronized OP_TK error | |
1607 | {yyerror ("Missing term"); RECOVER;} | |
1608 | ; | |
1609 | ||
b9f7e36c | 1610 | synchronized: |
e04a16fb AG |
1611 | MODIFIER_TK |
1612 | { | |
b9f7e36c APB |
1613 | if ((1 << $1) != ACC_SYNCHRONIZED) |
1614 | fatal ("synchronized was '%d' - yyparse", (1 << $1)); | |
e04a16fb AG |
1615 | } |
1616 | ; | |
1617 | ||
1618 | try_statement: | |
1619 | TRY_TK block catches | |
a7d8d81f | 1620 | { $$ = build_try_statement ($1.location, $2, $3); } |
e04a16fb | 1621 | | TRY_TK block finally |
a7d8d81f | 1622 | { $$ = build_try_finally_statement ($1.location, $2, $3); } |
e04a16fb | 1623 | | TRY_TK block catches finally |
a7d8d81f PB |
1624 | { $$ = build_try_finally_statement ($1.location, |
1625 | build_try_statement ($1.location, | |
1626 | $2, $3), | |
1627 | $4); } | |
e04a16fb AG |
1628 | | TRY_TK error |
1629 | {yyerror ("'{' expected"); DRECOVER (try_statement);} | |
1630 | ; | |
1631 | ||
1632 | catches: | |
1633 | catch_clause | |
1634 | | catches catch_clause | |
b67d701b PB |
1635 | { |
1636 | TREE_CHAIN ($2) = $1; | |
1637 | $$ = $2; | |
1638 | } | |
e04a16fb AG |
1639 | ; |
1640 | ||
1641 | catch_clause: | |
b67d701b PB |
1642 | catch_clause_parameter block |
1643 | { | |
1644 | java_method_add_stmt (current_function_decl, $2); | |
1645 | exit_block (); | |
1646 | $$ = $1; | |
1647 | } | |
1648 | ||
1649 | catch_clause_parameter: | |
1650 | CATCH_TK OP_TK formal_parameter CP_TK | |
1651 | { | |
1652 | /* We add a block to define a scope for | |
1653 | formal_parameter (CCBP). The formal parameter is | |
1654 | declared initialized by the appropriate function | |
1655 | call */ | |
1656 | tree ccpb = enter_block (); | |
1657 | tree init = build_assignment (ASSIGN_TK, $2.location, | |
1658 | TREE_PURPOSE ($3), | |
1659 | soft_exceptioninfo_call_node); | |
1660 | declare_local_variables (0, TREE_VALUE ($3), | |
1661 | build_tree_list (TREE_PURPOSE ($3), | |
1662 | init)); | |
1663 | $$ = build1 (CATCH_EXPR, NULL_TREE, ccpb); | |
1664 | EXPR_WFL_LINECOL ($$) = $1.location; | |
1665 | } | |
e04a16fb AG |
1666 | | CATCH_TK error |
1667 | {yyerror ("'(' expected"); RECOVER;} | |
e04a16fb | 1668 | | CATCH_TK OP_TK error |
b67d701b PB |
1669 | {yyerror ("Missing term or ')' expected"); DRECOVER (2);} |
1670 | | CATCH_TK OP_TK error CP_TK /* That's for () */ | |
1671 | {yyerror ("')' expected"); DRECOVER (1);} | |
e04a16fb AG |
1672 | ; |
1673 | ||
1674 | finally: | |
1675 | FINALLY_TK block | |
a7d8d81f | 1676 | { $$ = $2; } |
e04a16fb AG |
1677 | | FINALLY_TK error |
1678 | {yyerror ("'{' expected"); RECOVER; } | |
1679 | ; | |
1680 | ||
1681 | /* 19.12 Production from 15: Expressions */ | |
1682 | primary: | |
1683 | primary_no_new_array | |
1684 | | array_creation_expression | |
1685 | ; | |
1686 | ||
1687 | primary_no_new_array: | |
1688 | literal | |
1689 | | THIS_TK | |
1690 | { $$ = build_this ($1.location); } | |
1691 | | OP_TK expression CP_TK | |
1692 | {$$ = $2;} | |
1693 | | class_instance_creation_expression | |
1694 | | field_access | |
1695 | | method_invocation | |
1696 | | array_access | |
1697 | /* type DOT_TK CLASS_TK doens't work. So we split the rule | |
1698 | 'type' into its components. Missing is something for array, | |
1699 | which will complete the reference_type part. FIXME */ | |
1700 | | name DOT_TK CLASS_TK /* Added, JDK1.1 class literals */ | |
c877974e | 1701 | { $$ = parse_jdk1_1_error ("named class literals"); } |
e04a16fb | 1702 | | primitive_type DOT_TK CLASS_TK /* Added, JDK1.1 class literals */ |
c877974e | 1703 | { $$ = build_class_ref ($1); } |
e04a16fb | 1704 | | VOID_TK DOT_TK CLASS_TK /* Added, JDK1.1 class literals */ |
c877974e | 1705 | { $$ = build_class_ref (void_type_node); } |
e04a16fb AG |
1706 | /* Added, JDK1.1 inner classes. Documentation is wrong |
1707 | refering to a 'ClassName' (class_name) rule that doesn't | |
1708 | exist. Used name instead. */ | |
1709 | | name DOT_TK THIS_TK | |
b67d701b | 1710 | { $$ = parse_jdk1_1_error ("class literals"); } |
e04a16fb AG |
1711 | | OP_TK expression error |
1712 | {yyerror ("')' expected"); RECOVER;} | |
1713 | | name DOT_TK error | |
1714 | {yyerror ("'class' or 'this' expected" ); RECOVER;} | |
1715 | | primitive_type DOT_TK error | |
1716 | {yyerror ("'class' expected" ); RECOVER;} | |
1717 | | VOID_TK DOT_TK error | |
1718 | {yyerror ("'class' expected" ); RECOVER;} | |
1719 | ; | |
1720 | ||
1721 | class_instance_creation_expression: | |
1722 | NEW_TK class_type OP_TK argument_list CP_TK | |
b67d701b | 1723 | { $$ = build_new_invocation ($2, $4); } |
e04a16fb | 1724 | | NEW_TK class_type OP_TK CP_TK |
b67d701b | 1725 | { $$ = build_new_invocation ($2, NULL_TREE); } |
e04a16fb AG |
1726 | /* Added, JDK1.1 inner classes but modified to use |
1727 | 'class_type' instead of 'TypeName' (type_name) mentionned | |
1728 | in the documentation but doesn't exist. */ | |
1729 | | NEW_TK class_type OP_TK argument_list CP_TK class_body | |
b67d701b | 1730 | { $$ = parse_jdk1_1_error ("inner class instance creation"); } |
e04a16fb | 1731 | | NEW_TK class_type OP_TK CP_TK class_body |
b67d701b | 1732 | { $$ = parse_jdk1_1_error ("inner class instance creation"); } |
e04a16fb AG |
1733 | /* Added, JDK1.1 inner classes, modified to use name or |
1734 | primary instead of primary solely which couldn't work in | |
1735 | all situations. */ | |
1736 | | something_dot_new identifier OP_TK CP_TK | |
1737 | | something_dot_new identifier OP_TK CP_TK class_body | |
1738 | | something_dot_new identifier OP_TK argument_list CP_TK | |
1739 | | something_dot_new identifier OP_TK argument_list CP_TK class_body | |
1740 | | NEW_TK error SC_TK | |
1741 | {yyerror ("'(' expected"); DRECOVER(new_1);} | |
1742 | | NEW_TK class_type error | |
1743 | {yyerror ("'(' expected"); RECOVER;} | |
1744 | | NEW_TK class_type OP_TK error | |
1745 | {yyerror ("')' or term expected"); RECOVER;} | |
1746 | | NEW_TK class_type OP_TK argument_list error | |
1747 | {yyerror ("')' expected"); RECOVER;} | |
1748 | | something_dot_new error | |
1749 | {YYERROR_NOW; yyerror ("Identifier expected"); RECOVER;} | |
1750 | | something_dot_new identifier error | |
1751 | {yyerror ("'(' expected"); RECOVER;} | |
1752 | ; | |
1753 | ||
1754 | something_dot_new: /* Added, not part of the specs. */ | |
1755 | name DOT_TK NEW_TK | |
1756 | | primary DOT_TK NEW_TK | |
1757 | ; | |
1758 | ||
1759 | argument_list: | |
1760 | expression | |
1761 | { | |
1762 | $$ = tree_cons (NULL_TREE, $1, NULL_TREE); | |
1763 | ctxp->formal_parameter_number = 1; | |
1764 | } | |
1765 | | argument_list C_TK expression | |
1766 | { | |
1767 | ctxp->formal_parameter_number += 1; | |
1768 | $$ = tree_cons (NULL_TREE, $3, $1); | |
1769 | } | |
1770 | | argument_list C_TK error | |
1771 | {yyerror ("Missing term"); RECOVER;} | |
1772 | ; | |
1773 | ||
1774 | array_creation_expression: | |
1775 | NEW_TK primitive_type dim_exprs | |
1776 | { $$ = build_newarray_node ($2, $3, 0); } | |
1777 | | NEW_TK class_or_interface_type dim_exprs | |
1778 | { $$ = build_newarray_node ($2, $3, 0); } | |
1779 | | NEW_TK primitive_type dim_exprs dims | |
ba179f9f | 1780 | { $$ = build_newarray_node ($2, $3, CURRENT_OSB (ctxp));} |
e04a16fb | 1781 | | NEW_TK class_or_interface_type dim_exprs dims |
ba179f9f | 1782 | { $$ = build_newarray_node ($2, $3, CURRENT_OSB (ctxp));} |
e04a16fb AG |
1783 | /* Added, JDK1.1 anonymous array. Initial documentation rule |
1784 | modified */ | |
1785 | | NEW_TK class_or_interface_type dims array_initializer | |
b67d701b | 1786 | { $$ = parse_jdk1_1_error ("anonymous array"); } |
e04a16fb | 1787 | | NEW_TK primitive_type dims array_initializer |
b67d701b | 1788 | { $$ = parse_jdk1_1_error ("anonymous array"); } |
e04a16fb AG |
1789 | | NEW_TK error CSB_TK |
1790 | {yyerror ("'[' expected"); DRECOVER ("]");} | |
1791 | | NEW_TK error OSB_TK | |
1792 | {yyerror ("']' expected"); RECOVER;} | |
1793 | ; | |
1794 | ||
1795 | dim_exprs: | |
1796 | dim_expr | |
1797 | { $$ = build_tree_list (NULL_TREE, $1); } | |
1798 | | dim_exprs dim_expr | |
1799 | { $$ = tree_cons (NULL_TREE, $2, $$); } | |
1800 | ; | |
1801 | ||
1802 | dim_expr: | |
1803 | OSB_TK expression CSB_TK | |
1804 | { | |
1805 | EXPR_WFL_LINECOL ($2) = $1.location; | |
1806 | $$ = $2; | |
1807 | } | |
1808 | | OSB_TK expression error | |
1809 | {yyerror ("']' expected"); RECOVER;} | |
1810 | | OSB_TK error | |
1811 | { | |
1812 | yyerror ("Missing term"); | |
1813 | yyerror ("']' expected"); | |
1814 | RECOVER; | |
1815 | } | |
1816 | ; | |
1817 | ||
1818 | dims: | |
1819 | OSB_TK CSB_TK | |
ba179f9f APB |
1820 | { |
1821 | int allocate = 0; | |
1822 | /* If not initialized, allocate memory for the osb | |
1823 | numbers stack */ | |
1824 | if (!ctxp->osb_limit) | |
1825 | { | |
1826 | allocate = ctxp->osb_limit = 32; | |
1827 | ctxp->osb_depth = -1; | |
1828 | } | |
1829 | /* If capacity overflown, reallocate a bigger chuck */ | |
1830 | else if (ctxp->osb_depth+1 == ctxp->osb_limit) | |
1831 | allocate = ctxp->osb_limit << 1; | |
1832 | ||
1833 | if (allocate) | |
1834 | { | |
1835 | allocate *= sizeof (int); | |
1836 | if (ctxp->osb_number) | |
1837 | ctxp->osb_number = (int *)xrealloc (ctxp->osb_number, | |
1838 | allocate); | |
1839 | else | |
1840 | ctxp->osb_number = (int *)xmalloc (allocate); | |
1841 | } | |
1842 | ctxp->osb_depth++; | |
1843 | CURRENT_OSB (ctxp) = 1; | |
1844 | } | |
e04a16fb | 1845 | | dims OSB_TK CSB_TK |
ba179f9f | 1846 | { CURRENT_OSB (ctxp)++; } |
e04a16fb AG |
1847 | | dims OSB_TK error |
1848 | { yyerror ("']' expected"); RECOVER;} | |
1849 | ; | |
1850 | ||
1851 | field_access: | |
1852 | primary DOT_TK identifier | |
1853 | { $$ = make_qualified_primary ($1, $3, $2.location); } | |
9bbc7d9f PB |
1854 | /* FIXME - REWRITE TO: |
1855 | { $$ = build_binop (COMPONENT_REF, $2.location, $1, $3); } */ | |
e04a16fb AG |
1856 | | SUPER_TK DOT_TK identifier |
1857 | { | |
1858 | tree super_wfl = | |
b67d701b PB |
1859 | build_wfl_node (super_identifier_node, |
1860 | input_filename, 0, 0); | |
e04a16fb AG |
1861 | EXPR_WFL_LINECOL (super_wfl) = $1.location; |
1862 | $$ = make_qualified_name (super_wfl, $3, $2.location); | |
1863 | } | |
1864 | | SUPER_TK error | |
1865 | {yyerror ("Field expected"); DRECOVER (super_field_acces);} | |
1866 | ; | |
1867 | ||
1868 | method_invocation: | |
1869 | name OP_TK CP_TK | |
1870 | { $$ = build_method_invocation ($1, NULL_TREE); } | |
1871 | | name OP_TK argument_list CP_TK | |
1872 | { $$ = build_method_invocation ($1, $3); } | |
1873 | | primary DOT_TK identifier OP_TK CP_TK | |
1874 | { | |
22eed1e6 APB |
1875 | if (TREE_CODE ($1) == THIS_EXPR) |
1876 | $$ = build_this_super_qualified_invocation | |
1877 | (1, $3, NULL_TREE, 0, $2.location); | |
1878 | else | |
1879 | { | |
1880 | tree invok = build_method_invocation ($3, NULL_TREE); | |
1881 | $$ = make_qualified_primary ($1, invok, $2.location); | |
1882 | } | |
e04a16fb AG |
1883 | } |
1884 | | primary DOT_TK identifier OP_TK argument_list CP_TK | |
1885 | { | |
22eed1e6 APB |
1886 | if (TREE_CODE ($1) == THIS_EXPR) |
1887 | $$ = build_this_super_qualified_invocation | |
1888 | (1, $3, $5, 0, $2.location); | |
1889 | else | |
1890 | { | |
1891 | tree invok = build_method_invocation ($3, $5); | |
1892 | $$ = make_qualified_primary ($1, invok, $2.location); | |
1893 | } | |
e04a16fb AG |
1894 | } |
1895 | | SUPER_TK DOT_TK identifier OP_TK CP_TK | |
22eed1e6 APB |
1896 | { |
1897 | $$ = build_this_super_qualified_invocation | |
1898 | (0, $3, NULL_TREE, $1.location, $2.location); | |
e04a16fb AG |
1899 | } |
1900 | | SUPER_TK DOT_TK identifier OP_TK argument_list CP_TK | |
1901 | { | |
22eed1e6 APB |
1902 | $$ = build_this_super_qualified_invocation |
1903 | (0, $3, $5, $1.location, $2.location); | |
e04a16fb AG |
1904 | } |
1905 | /* Screws up thing. I let it here until I'm convinced it can | |
1906 | be removed. FIXME | |
1907 | | primary DOT_TK error | |
1908 | {yyerror ("'(' expected"); DRECOVER(bad);} */ | |
1909 | | SUPER_TK DOT_TK error CP_TK | |
1910 | { yyerror ("'(' expected"); DRECOVER (method_invocation); } | |
1911 | | SUPER_TK DOT_TK error DOT_TK | |
1912 | { yyerror ("'(' expected"); DRECOVER (method_invocation); } | |
1913 | ; | |
1914 | ||
1915 | array_access: | |
1916 | name OSB_TK expression CSB_TK | |
1917 | { $$ = build_array_ref ($2.location, $1, $3); } | |
1918 | | primary_no_new_array OSB_TK expression CSB_TK | |
1919 | { $$ = build_array_ref ($2.location, $1, $3); } | |
1920 | | name OSB_TK error | |
1921 | { | |
1922 | yyerror ("Missing term and ']' expected"); | |
1923 | DRECOVER(array_access); | |
1924 | } | |
1925 | | name OSB_TK expression error | |
1926 | { | |
1927 | yyerror ("']' expected"); | |
1928 | DRECOVER(array_access); | |
1929 | } | |
1930 | | primary_no_new_array OSB_TK error | |
1931 | { | |
1932 | yyerror ("Missing term and ']' expected"); | |
1933 | DRECOVER(array_access); | |
1934 | } | |
1935 | | primary_no_new_array OSB_TK expression error | |
1936 | { | |
1937 | yyerror ("']' expected"); | |
1938 | DRECOVER(array_access); | |
1939 | } | |
1940 | ; | |
1941 | ||
1942 | postfix_expression: | |
1943 | primary | |
1944 | | name | |
1945 | | post_increment_expression | |
1946 | | post_decrement_expression | |
1947 | ; | |
1948 | ||
1949 | post_increment_expression: | |
1950 | postfix_expression INCR_TK | |
1951 | { $$ = build_incdec ($2.token, $2.location, $1, 1); } | |
1952 | ; | |
1953 | ||
1954 | post_decrement_expression: | |
1955 | postfix_expression DECR_TK | |
1956 | { $$ = build_incdec ($2.token, $2.location, $1, 1); } | |
1957 | ; | |
1958 | ||
1959 | unary_expression: | |
1960 | pre_increment_expression | |
1961 | | pre_decrement_expression | |
1962 | | PLUS_TK unary_expression | |
1963 | {$$ = build_unaryop ($1.token, $1.location, $2); } | |
1964 | | MINUS_TK unary_expression | |
1965 | {$$ = build_unaryop ($1.token, $1.location, $2); } | |
1966 | | unary_expression_not_plus_minus | |
1967 | | PLUS_TK error | |
1968 | {yyerror ("Missing term"); RECOVER} | |
1969 | | MINUS_TK error | |
1970 | {yyerror ("Missing term"); RECOVER} | |
1971 | ; | |
1972 | ||
1973 | pre_increment_expression: | |
1974 | INCR_TK unary_expression | |
1975 | {$$ = build_incdec ($1.token, $1.location, $2, 0); } | |
1976 | | INCR_TK error | |
1977 | {yyerror ("Missing term"); RECOVER} | |
1978 | ; | |
1979 | ||
1980 | pre_decrement_expression: | |
1981 | DECR_TK unary_expression | |
1982 | {$$ = build_incdec ($1.token, $1.location, $2, 0); } | |
1983 | | DECR_TK error | |
1984 | {yyerror ("Missing term"); RECOVER} | |
1985 | ; | |
1986 | ||
1987 | unary_expression_not_plus_minus: | |
1988 | postfix_expression | |
1989 | | NOT_TK unary_expression | |
1990 | {$$ = build_unaryop ($1.token, $1.location, $2); } | |
1991 | | NEG_TK unary_expression | |
1992 | {$$ = build_unaryop ($1.token, $1.location, $2); } | |
1993 | | cast_expression | |
1994 | | NOT_TK error | |
1995 | {yyerror ("Missing term"); RECOVER} | |
1996 | | NEG_TK error | |
1997 | {yyerror ("Missing term"); RECOVER} | |
1998 | ; | |
1999 | ||
2000 | cast_expression: /* Error handling here is potentially weak */ | |
2001 | OP_TK primitive_type dims CP_TK unary_expression | |
2002 | { | |
2003 | tree type = $2; | |
ba179f9f | 2004 | while (CURRENT_OSB (ctxp)--) |
e04a16fb | 2005 | type = build_java_array_type (type, -1); |
ba179f9f | 2006 | ctxp->osb_depth--; |
e04a16fb AG |
2007 | $$ = build_cast ($1.location, type, $5); |
2008 | } | |
2009 | | OP_TK primitive_type CP_TK unary_expression | |
2010 | { $$ = build_cast ($1.location, $2, $4); } | |
2011 | | OP_TK expression CP_TK unary_expression_not_plus_minus | |
2012 | { $$ = build_cast ($1.location, $2, $4); } | |
2013 | | OP_TK name dims CP_TK unary_expression_not_plus_minus | |
2014 | { | |
2015 | char *ptr; | |
ba179f9f | 2016 | while (CURRENT_OSB (ctxp)--) |
e04a16fb | 2017 | obstack_1grow (&temporary_obstack, '['); |
ba179f9f | 2018 | ctxp->osb_depth--; |
e04a16fb AG |
2019 | obstack_grow0 (&temporary_obstack, |
2020 | IDENTIFIER_POINTER (EXPR_WFL_NODE ($2)), | |
2021 | IDENTIFIER_LENGTH (EXPR_WFL_NODE ($2))); | |
2022 | ptr = obstack_finish (&temporary_obstack); | |
2023 | EXPR_WFL_NODE ($2) = get_identifier (ptr); | |
2024 | $$ = build_cast ($1.location, $2, $5); | |
2025 | } | |
2026 | | OP_TK primitive_type OSB_TK error | |
2027 | {yyerror ("']' expected, invalid type expression");} | |
2028 | | OP_TK error | |
2029 | { | |
2030 | if (ctxp->prevent_ese != lineno) | |
2031 | yyerror ("Invalid type expression"); RECOVER; | |
2032 | RECOVER; | |
2033 | } | |
2034 | | OP_TK primitive_type dims CP_TK error | |
2035 | {yyerror ("Missing term"); RECOVER;} | |
2036 | | OP_TK primitive_type CP_TK error | |
2037 | {yyerror ("Missing term"); RECOVER;} | |
2038 | | OP_TK name dims CP_TK error | |
2039 | {yyerror ("Missing term"); RECOVER;} | |
2040 | ; | |
2041 | ||
2042 | multiplicative_expression: | |
2043 | unary_expression | |
2044 | | multiplicative_expression MULT_TK unary_expression | |
2045 | { | |
2046 | $$ = build_binop (BINOP_LOOKUP ($2.token), | |
2047 | $2.location, $1, $3); | |
2048 | } | |
2049 | | multiplicative_expression DIV_TK unary_expression | |
2050 | { | |
2051 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2052 | $1, $3); | |
2053 | } | |
2054 | | multiplicative_expression REM_TK unary_expression | |
2055 | { | |
2056 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2057 | $1, $3); | |
2058 | } | |
2059 | | multiplicative_expression MULT_TK error | |
2060 | {yyerror ("Missing term"); RECOVER;} | |
2061 | | multiplicative_expression DIV_TK error | |
2062 | {yyerror ("Missing term"); RECOVER;} | |
2063 | | multiplicative_expression REM_TK error | |
2064 | {yyerror ("Missing term"); RECOVER;} | |
2065 | ; | |
2066 | ||
2067 | additive_expression: | |
2068 | multiplicative_expression | |
2069 | | additive_expression PLUS_TK multiplicative_expression | |
2070 | { | |
2071 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2072 | $1, $3); | |
2073 | } | |
2074 | | additive_expression MINUS_TK multiplicative_expression | |
2075 | { | |
2076 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2077 | $1, $3); | |
2078 | } | |
2079 | | additive_expression PLUS_TK error | |
2080 | {yyerror ("Missing term"); RECOVER;} | |
2081 | | additive_expression MINUS_TK error | |
2082 | {yyerror ("Missing term"); RECOVER;} | |
2083 | ; | |
2084 | ||
2085 | shift_expression: | |
2086 | additive_expression | |
2087 | | shift_expression LS_TK additive_expression | |
2088 | { | |
2089 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2090 | $1, $3); | |
2091 | } | |
2092 | | shift_expression SRS_TK additive_expression | |
2093 | { | |
2094 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2095 | $1, $3); | |
2096 | } | |
2097 | | shift_expression ZRS_TK additive_expression | |
2098 | { | |
2099 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2100 | $1, $3); | |
2101 | } | |
2102 | | shift_expression LS_TK error | |
2103 | {yyerror ("Missing term"); RECOVER;} | |
2104 | | shift_expression SRS_TK error | |
2105 | {yyerror ("Missing term"); RECOVER;} | |
2106 | | shift_expression ZRS_TK error | |
2107 | {yyerror ("Missing term"); RECOVER;} | |
2108 | ; | |
2109 | ||
2110 | relational_expression: | |
2111 | shift_expression | |
2112 | | relational_expression LT_TK shift_expression | |
2113 | { | |
2114 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2115 | $1, $3); | |
2116 | } | |
2117 | | relational_expression GT_TK shift_expression | |
2118 | { | |
2119 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2120 | $1, $3); | |
2121 | } | |
2122 | | relational_expression LTE_TK shift_expression | |
2123 | { | |
2124 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2125 | $1, $3); | |
2126 | } | |
2127 | | relational_expression GTE_TK shift_expression | |
2128 | { | |
2129 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2130 | $1, $3); | |
2131 | } | |
2132 | | relational_expression INSTANCEOF_TK reference_type | |
5e942c50 | 2133 | { $$ = build_binop (INSTANCEOF_EXPR, $2.location, $1, $3); } |
e04a16fb AG |
2134 | | relational_expression LT_TK error |
2135 | {yyerror ("Missing term"); RECOVER;} | |
2136 | | relational_expression GT_TK error | |
2137 | {yyerror ("Missing term"); RECOVER;} | |
2138 | | relational_expression LTE_TK error | |
2139 | {yyerror ("Missing term"); RECOVER;} | |
2140 | | relational_expression GTE_TK error | |
2141 | {yyerror ("Missing term"); RECOVER;} | |
2142 | | relational_expression INSTANCEOF_TK error | |
2143 | {yyerror ("Invalid reference type"); RECOVER;} | |
2144 | ; | |
2145 | ||
2146 | equality_expression: | |
2147 | relational_expression | |
2148 | | equality_expression EQ_TK relational_expression | |
2149 | { | |
2150 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2151 | $1, $3); | |
2152 | } | |
2153 | | equality_expression NEQ_TK relational_expression | |
2154 | { | |
2155 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2156 | $1, $3); | |
2157 | } | |
2158 | | equality_expression EQ_TK error | |
2159 | {yyerror ("Missing term"); RECOVER;} | |
2160 | | equality_expression NEQ_TK error | |
2161 | {yyerror ("Missing term"); RECOVER;} | |
2162 | ; | |
2163 | ||
2164 | and_expression: | |
2165 | equality_expression | |
2166 | | and_expression AND_TK equality_expression | |
2167 | { | |
2168 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2169 | $1, $3); | |
2170 | } | |
2171 | | and_expression AND_TK error | |
2172 | {yyerror ("Missing term"); RECOVER;} | |
2173 | ; | |
2174 | ||
2175 | exclusive_or_expression: | |
2176 | and_expression | |
2177 | | exclusive_or_expression XOR_TK and_expression | |
2178 | { | |
2179 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2180 | $1, $3); | |
2181 | } | |
2182 | | exclusive_or_expression XOR_TK error | |
2183 | {yyerror ("Missing term"); RECOVER;} | |
2184 | ; | |
2185 | ||
2186 | inclusive_or_expression: | |
2187 | exclusive_or_expression | |
2188 | | inclusive_or_expression OR_TK exclusive_or_expression | |
2189 | { | |
2190 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2191 | $1, $3); | |
2192 | } | |
2193 | | inclusive_or_expression OR_TK error | |
2194 | {yyerror ("Missing term"); RECOVER;} | |
2195 | ; | |
2196 | ||
2197 | conditional_and_expression: | |
2198 | inclusive_or_expression | |
2199 | | conditional_and_expression BOOL_AND_TK inclusive_or_expression | |
2200 | { | |
2201 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2202 | $1, $3); | |
2203 | } | |
2204 | | conditional_and_expression BOOL_AND_TK error | |
2205 | {yyerror ("Missing term"); RECOVER;} | |
2206 | ; | |
2207 | ||
2208 | conditional_or_expression: | |
2209 | conditional_and_expression | |
2210 | | conditional_or_expression BOOL_OR_TK conditional_and_expression | |
2211 | { | |
2212 | $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location, | |
2213 | $1, $3); | |
2214 | } | |
2215 | | conditional_or_expression BOOL_OR_TK error | |
2216 | {yyerror ("Missing term"); RECOVER;} | |
2217 | ; | |
2218 | ||
2219 | conditional_expression: /* Error handling here is weak */ | |
2220 | conditional_or_expression | |
2221 | | conditional_or_expression REL_QM_TK expression REL_CL_TK conditional_expression | |
22eed1e6 APB |
2222 | { |
2223 | $$ = build (CONDITIONAL_EXPR, NULL_TREE, $1, $3, $5); | |
2224 | EXPR_WFL_LINECOL ($$) = $2.location; | |
2225 | } | |
e04a16fb AG |
2226 | | conditional_or_expression REL_QM_TK REL_CL_TK error |
2227 | { | |
2228 | YYERROR_NOW; | |
2229 | yyerror ("Missing term"); | |
2230 | DRECOVER (1); | |
2231 | } | |
2232 | | conditional_or_expression REL_QM_TK error | |
2233 | {yyerror ("Missing term"); DRECOVER (2);} | |
2234 | | conditional_or_expression REL_QM_TK expression REL_CL_TK error | |
2235 | {yyerror ("Missing term"); DRECOVER (3);} | |
2236 | ; | |
2237 | ||
2238 | assignment_expression: | |
2239 | conditional_expression | |
2240 | | assignment | |
2241 | ; | |
2242 | ||
2243 | assignment: | |
2244 | left_hand_side assignment_operator assignment_expression | |
2245 | { $$ = build_assignment ($2.token, $2.location, $1, $3); } | |
2246 | | left_hand_side assignment_operator error | |
2247 | { | |
2248 | if (ctxp->prevent_ese != lineno) | |
2249 | yyerror ("Missing term"); | |
2250 | DRECOVER (assign); | |
2251 | } | |
2252 | ; | |
2253 | ||
2254 | left_hand_side: | |
2255 | name | |
2256 | | field_access | |
2257 | | array_access | |
2258 | ; | |
2259 | ||
2260 | assignment_operator: | |
2261 | ASSIGN_ANY_TK | |
2262 | | ASSIGN_TK | |
2263 | ; | |
2264 | ||
2265 | expression: | |
2266 | assignment_expression | |
2267 | ; | |
2268 | ||
2269 | constant_expression: | |
2270 | expression | |
2271 | ; | |
2272 | ||
2273 | %% | |
2274 | \f | |
2275 | ||
2276 | #include "lex.c" | |
2277 | ||
2278 | /* Flag for the error report routine to issue the error the first time | |
2279 | it's called (overriding the default behavior which is to drop the | |
2280 | first invocation and honor the second one, taking advantage of a | |
2281 | richer context. */ | |
2282 | static int force_error = 0; | |
2283 | ||
2284 | /* Create a new parser context and make it the current one. */ | |
2285 | ||
2286 | void | |
2287 | java_push_parser_context () | |
2288 | { | |
2289 | struct parser_ctxt *new = | |
23a79c61 | 2290 | (struct parser_ctxt *)xmalloc(sizeof (struct parser_ctxt)); |
e04a16fb AG |
2291 | |
2292 | bzero (new, sizeof (struct parser_ctxt)); | |
2293 | new->next = ctxp; | |
2294 | ctxp = new; | |
2295 | if (ctxp->next) | |
5e942c50 APB |
2296 | { |
2297 | ctxp->incomplete_class = ctxp->next->incomplete_class; | |
2298 | ctxp->gclass_list = ctxp->next->gclass_list; | |
2299 | } | |
e04a16fb AG |
2300 | } |
2301 | ||
22eed1e6 APB |
2302 | /* If the first file of a file list was a class file, no context |
2303 | exists for a source file to be parsed. This boolean remembers that | |
2304 | java_parser_context_save_global might have created a dummy one, so | |
2305 | that java_parser_context_restore_global can pop it. */ | |
2306 | static int extra_ctxp_pushed_p = 0; | |
2307 | ||
e04a16fb AG |
2308 | void |
2309 | java_parser_context_save_global () | |
2310 | { | |
22eed1e6 APB |
2311 | if (!ctxp) |
2312 | { | |
2313 | java_push_parser_context (); | |
2314 | extra_ctxp_pushed_p = 1; | |
2315 | } | |
e04a16fb AG |
2316 | ctxp->finput = finput; |
2317 | ctxp->lineno = lineno; | |
2318 | ctxp->current_class = current_class; | |
2319 | ctxp->filename = input_filename; | |
2320 | ctxp->current_function_decl = current_function_decl; | |
2321 | } | |
2322 | ||
2323 | void | |
2324 | java_parser_context_restore_global () | |
2325 | { | |
2326 | finput = ctxp->finput; | |
2327 | lineno = ctxp->lineno; | |
2328 | current_class = ctxp->current_class; | |
2329 | input_filename = ctxp->filename; | |
2330 | current_function_decl = ctxp->current_function_decl; | |
23a79c61 | 2331 | if (!ctxp->next && extra_ctxp_pushed_p) |
22eed1e6 APB |
2332 | { |
2333 | java_pop_parser_context (0); | |
2334 | extra_ctxp_pushed_p = 0; | |
2335 | } | |
e04a16fb AG |
2336 | } |
2337 | ||
2338 | void | |
b351b287 APB |
2339 | java_pop_parser_context (generate) |
2340 | int generate; | |
e04a16fb AG |
2341 | { |
2342 | tree current; | |
5e942c50 | 2343 | struct parser_ctxt *toFree, *next; |
e04a16fb | 2344 | |
5e942c50 APB |
2345 | if (!ctxp) |
2346 | return; | |
2347 | ||
2348 | toFree = ctxp; | |
2349 | next = ctxp->next; | |
e04a16fb AG |
2350 | if (next) |
2351 | { | |
2352 | next->incomplete_class = ctxp->incomplete_class; | |
5e942c50 | 2353 | next->gclass_list = ctxp->gclass_list; |
e04a16fb AG |
2354 | lineno = ctxp->lineno; |
2355 | finput = ctxp->finput; | |
2356 | current_class = ctxp->current_class; | |
2357 | } | |
2358 | ||
2359 | /* Set the single import class file flag to 0 for the current list | |
2360 | of imported things */ | |
2361 | for (current = ctxp->import_list; current; current = TREE_CHAIN (current)) | |
2362 | IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_PURPOSE (current)) = 0; | |
2363 | ||
2364 | /* And restore those of the previous context */ | |
0a2138e2 | 2365 | if ((ctxp = next)) /* Assignment is really meant here */ |
e04a16fb AG |
2366 | for (current = ctxp->import_list; current; current = TREE_CHAIN (current)) |
2367 | IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_PURPOSE (current)) = 1; | |
2368 | ||
b351b287 APB |
2369 | if (generate) |
2370 | { | |
2371 | toFree->next = ctxp_for_generation; | |
2372 | ctxp_for_generation = toFree; | |
2373 | } | |
2374 | else | |
2375 | free (toFree); | |
e04a16fb AG |
2376 | } |
2377 | ||
b67d701b PB |
2378 | /* Reporting JDK1.1 features not implemented */ |
2379 | ||
2380 | static tree | |
2381 | parse_jdk1_1_error (msg) | |
2382 | char *msg; | |
2383 | { | |
2384 | sorry (": `%s' JDK1.1(TM) feature", msg); | |
2385 | java_error_count++; | |
9bbc7d9f | 2386 | return empty_stmt_node; |
b67d701b PB |
2387 | } |
2388 | ||
e04a16fb AG |
2389 | static int do_warning = 0; |
2390 | ||
2391 | void | |
2392 | yyerror (msg) | |
2393 | char *msg; | |
2394 | { | |
2395 | static java_lc elc; | |
2396 | static int prev_lineno; | |
2397 | static char *prev_msg; | |
2398 | ||
0a2138e2 | 2399 | int save_lineno; |
e04a16fb AG |
2400 | char *remainder, *code_from_source; |
2401 | extern struct obstack temporary_obstack; | |
2402 | ||
2403 | if (!force_error && prev_lineno == lineno) | |
2404 | return; | |
2405 | ||
2406 | /* Save current error location but report latter, when the context is | |
2407 | richer. */ | |
2408 | if (ctxp->java_error_flag == 0) | |
2409 | { | |
2410 | ctxp->java_error_flag = 1; | |
2411 | elc = ctxp->elc; | |
2412 | /* Do something to use the previous line if we're reaching the | |
2413 | end of the file... */ | |
2414 | #ifdef VERBOSE_SKELETON | |
2415 | printf ("* Error detected (%s)\n", (msg ? msg : "(null)")); | |
2416 | #endif | |
2417 | return; | |
2418 | } | |
2419 | ||
2420 | /* Ignore duplicate message on the same line. BTW, this is dubious. FIXME */ | |
2421 | if (!force_error && msg == prev_msg && prev_lineno == elc.line) | |
2422 | return; | |
2423 | ||
2424 | ctxp->java_error_flag = 0; | |
2425 | if (do_warning) | |
2426 | java_warning_count++; | |
2427 | else | |
2428 | java_error_count++; | |
2429 | ||
2430 | if (elc.col == 0 && msg[1] == ';') | |
2431 | { | |
2432 | elc.col = ctxp->p_line->char_col-1; | |
2433 | elc.line = ctxp->p_line->lineno; | |
2434 | } | |
2435 | ||
2436 | save_lineno = lineno; | |
2437 | prev_lineno = lineno = elc.line; | |
2438 | prev_msg = msg; | |
2439 | ||
2440 | code_from_source = java_get_line_col (ctxp->filename, elc.line, elc.col); | |
2441 | obstack_grow0 (&temporary_obstack, | |
2442 | code_from_source, strlen (code_from_source)); | |
2443 | remainder = obstack_finish (&temporary_obstack); | |
2444 | if (do_warning) | |
2445 | warning ("%s.\n%s", msg, remainder); | |
2446 | else | |
2447 | error ("%s.\n%s", msg, remainder); | |
2448 | ||
2449 | /* This allow us to cheaply avoid an extra 'Invalid expression | |
2450 | statement' error report when errors have been already reported on | |
2451 | the same line. This occurs when we report an error but don't have | |
2452 | a synchronization point other than ';', which | |
2453 | expression_statement is the only one to take care of. */ | |
2454 | ctxp->prevent_ese = lineno = save_lineno; | |
2455 | } | |
2456 | ||
2457 | static void | |
15fdcfe9 | 2458 | issue_warning_error_from_context (cl, msg, ap) |
5e942c50 | 2459 | tree cl; |
d4476be2 | 2460 | const char *msg; |
15fdcfe9 | 2461 | va_list ap; |
5e942c50 | 2462 | { |
1886c9d8 | 2463 | char *saved, *saved_input_filename; |
15fdcfe9 PB |
2464 | char buffer [4096]; |
2465 | vsprintf (buffer, msg, ap); | |
2466 | force_error = 1; | |
5e942c50 APB |
2467 | |
2468 | ctxp->elc.line = EXPR_WFL_LINENO (cl); | |
82371d41 APB |
2469 | ctxp->elc.col = (EXPR_WFL_COLNO (cl) == 0xfff ? -1 : |
2470 | (EXPR_WFL_COLNO (cl) == 0xffe ? -2 : EXPR_WFL_COLNO (cl))); | |
5e942c50 APB |
2471 | |
2472 | /* We have a CL, that's a good reason for using it if it contains data */ | |
2473 | saved = ctxp->filename; | |
2474 | if (TREE_CODE (cl) == EXPR_WITH_FILE_LOCATION && EXPR_WFL_FILENAME_NODE (cl)) | |
2475 | ctxp->filename = EXPR_WFL_FILENAME (cl); | |
1886c9d8 APB |
2476 | saved_input_filename = input_filename; |
2477 | input_filename = ctxp->filename; | |
15fdcfe9 PB |
2478 | java_error (NULL); |
2479 | java_error (buffer); | |
5e942c50 | 2480 | ctxp->filename = saved; |
1886c9d8 | 2481 | input_filename = saved_input_filename; |
15fdcfe9 | 2482 | force_error = 0; |
5e942c50 APB |
2483 | } |
2484 | ||
e04a16fb AG |
2485 | /* Issue an error message at a current source line CL */ |
2486 | ||
15fdcfe9 | 2487 | void |
d4476be2 | 2488 | parse_error_context VPROTO ((tree cl, const char *msg, ...)) |
e04a16fb | 2489 | { |
d4476be2 | 2490 | #ifndef ANSI_PROTOTYPES |
e04a16fb | 2491 | tree cl; |
d4476be2 | 2492 | const char *msg; |
e04a16fb | 2493 | #endif |
e04a16fb AG |
2494 | va_list ap; |
2495 | ||
2496 | VA_START (ap, msg); | |
d4476be2 | 2497 | #ifndef ANSI_PROTOTYPES |
e04a16fb | 2498 | cl = va_arg (ap, tree); |
d4476be2 | 2499 | msg = va_arg (ap, const char *); |
e04a16fb | 2500 | #endif |
15fdcfe9 PB |
2501 | issue_warning_error_from_context (cl, msg, ap); |
2502 | va_end (ap); | |
e04a16fb AG |
2503 | } |
2504 | ||
2505 | /* Issue a warning at a current source line CL */ | |
2506 | ||
2507 | static void | |
d4476be2 | 2508 | parse_warning_context VPROTO ((tree cl, const char *msg, ...)) |
e04a16fb | 2509 | { |
d4476be2 | 2510 | #ifndef ANSI_PROTOTYPES |
e04a16fb | 2511 | tree cl; |
d4476be2 | 2512 | const char *msg; |
e04a16fb | 2513 | #endif |
e04a16fb AG |
2514 | va_list ap; |
2515 | ||
2516 | VA_START (ap, msg); | |
d4476be2 | 2517 | #ifndef ANSI_PROTOTYPES |
e04a16fb | 2518 | cl = va_arg (ap, tree); |
d4476be2 | 2519 | msg = va_arg (ap, const char *); |
e04a16fb | 2520 | #endif |
e04a16fb | 2521 | |
c877974e | 2522 | force_error = do_warning = 1; |
15fdcfe9 | 2523 | issue_warning_error_from_context (cl, msg, ap); |
c877974e | 2524 | do_warning = force_error = 0; |
15fdcfe9 | 2525 | va_end (ap); |
e04a16fb AG |
2526 | } |
2527 | ||
82371d41 APB |
2528 | static tree |
2529 | find_expr_with_wfl (node) | |
2530 | tree node; | |
2531 | { | |
2532 | while (node) | |
2533 | { | |
2534 | char code; | |
2535 | tree to_return; | |
2536 | ||
2537 | switch (TREE_CODE (node)) | |
2538 | { | |
2539 | case BLOCK: | |
2540 | return find_expr_with_wfl (BLOCK_EXPR_BODY (node)); | |
2541 | ||
2542 | case COMPOUND_EXPR: | |
2543 | to_return = find_expr_with_wfl (TREE_OPERAND (node, 0)); | |
2544 | if (to_return) | |
2545 | return to_return; | |
2546 | to_return = find_expr_with_wfl (TREE_OPERAND (node, 1)); | |
2547 | return to_return; | |
2548 | ||
2549 | case LOOP_EXPR: | |
2550 | return find_expr_with_wfl (TREE_OPERAND (node, 0)); | |
2551 | ||
2552 | case LABELED_BLOCK_EXPR: | |
2553 | return find_expr_with_wfl (TREE_OPERAND (node, 1)); | |
2554 | default: | |
2555 | code = TREE_CODE_CLASS (TREE_CODE (node)); | |
2556 | if (((code == '1') || (code == '2') || (code == 'e')) | |
2557 | && EXPR_WFL_LINECOL (node)) | |
2558 | return node; | |
ba179f9f | 2559 | return NULL_TREE; |
82371d41 APB |
2560 | } |
2561 | } | |
2562 | return NULL_TREE; | |
2563 | } | |
2564 | ||
2565 | /* Issue a missing return statement error. Uses METHOD to figure the | |
2566 | last line of the method the error occurs in. */ | |
2567 | ||
2568 | static void | |
2569 | missing_return_error (method) | |
2570 | tree method; | |
2571 | { | |
2572 | EXPR_WFL_SET_LINECOL (wfl_operator, DECL_SOURCE_LINE_LAST (method), -2); | |
2573 | parse_error_context (wfl_operator, "Missing return statement"); | |
2574 | } | |
2575 | ||
2576 | /* Issue an unreachable statement error. From NODE, find the next | |
2577 | statement to report appropriately. */ | |
2578 | static void | |
2579 | unreachable_stmt_error (node) | |
2580 | tree node; | |
2581 | { | |
2582 | /* Browse node to find the next expression node that has a WFL. Use | |
2583 | the location to report the error */ | |
2584 | if (TREE_CODE (node) == COMPOUND_EXPR) | |
2585 | node = find_expr_with_wfl (TREE_OPERAND (node, 1)); | |
2586 | else | |
2587 | node = find_expr_with_wfl (node); | |
2588 | ||
2589 | if (node) | |
2590 | { | |
2591 | EXPR_WFL_SET_LINECOL (wfl_operator, EXPR_WFL_LINENO (node), -2); | |
2592 | parse_error_context (wfl_operator, "Unreachable statement"); | |
2593 | } | |
2594 | else | |
2595 | fatal ("Can't get valid statement - unreachable_stmt_error"); | |
2596 | } | |
2597 | ||
c877974e | 2598 | int |
e04a16fb AG |
2599 | java_report_errors () |
2600 | { | |
2601 | if (java_error_count) | |
2602 | fprintf (stderr, "%d error%s", | |
2603 | java_error_count, (java_error_count == 1 ? "" : "s")); | |
2604 | if (java_warning_count) | |
2605 | fprintf (stderr, "%s%d warning%s", (java_error_count ? ", " : ""), | |
2606 | java_warning_count, (java_warning_count == 1 ? "" : "s")); | |
2607 | if (java_error_count || java_warning_count) | |
2608 | putc ('\n', stderr); | |
c877974e | 2609 | return java_error_count; |
e04a16fb AG |
2610 | } |
2611 | ||
2612 | static char * | |
2613 | java_accstring_lookup (flags) | |
2614 | int flags; | |
2615 | { | |
2616 | static char buffer [80]; | |
2617 | #define COPY_RETURN(S) {strcpy (buffer, S); return buffer;} | |
2618 | ||
2619 | /* Access modifier looked-up first for easier report on forbidden | |
2620 | access. */ | |
2621 | if (flags & ACC_PUBLIC) COPY_RETURN ("public"); | |
2622 | if (flags & ACC_PRIVATE) COPY_RETURN ("private"); | |
2623 | if (flags & ACC_PROTECTED) COPY_RETURN ("protected"); | |
2624 | if (flags & ACC_STATIC) COPY_RETURN ("static"); | |
2625 | if (flags & ACC_FINAL) COPY_RETURN ("final"); | |
2626 | if (flags & ACC_SYNCHRONIZED) COPY_RETURN ("synchronized"); | |
2627 | if (flags & ACC_VOLATILE) COPY_RETURN ("volatile"); | |
2628 | if (flags & ACC_TRANSIENT) COPY_RETURN ("transient"); | |
2629 | if (flags & ACC_NATIVE) COPY_RETURN ("native"); | |
2630 | if (flags & ACC_INTERFACE) COPY_RETURN ("interface"); | |
2631 | if (flags & ACC_ABSTRACT) COPY_RETURN ("abstract"); | |
2632 | ||
2633 | buffer [0] = '\0'; | |
2634 | return buffer; | |
2635 | #undef COPY_RETURN | |
2636 | } | |
2637 | ||
b67d701b PB |
2638 | /* Issuing error messages upon redefinition of classes, interfaces or |
2639 | variables. */ | |
2640 | ||
e04a16fb | 2641 | static void |
b67d701b | 2642 | classitf_redefinition_error (context, id, decl, cl) |
e04a16fb AG |
2643 | char *context; |
2644 | tree id, decl, cl; | |
2645 | { | |
2646 | parse_error_context (cl, "%s `%s' already defined in %s:%d", | |
2647 | context, IDENTIFIER_POINTER (id), | |
2648 | DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); | |
2649 | /* Here we should point out where its redefined. It's a unicode. FIXME */ | |
2650 | } | |
2651 | ||
b67d701b PB |
2652 | static void |
2653 | variable_redefinition_error (context, name, type, line) | |
2654 | tree context, name, type; | |
2655 | int line; | |
2656 | { | |
2657 | char *type_name; | |
2658 | ||
2659 | /* Figure a proper name for type. We might haven't resolved it */ | |
c877974e APB |
2660 | if (TREE_CODE (type) == POINTER_TYPE && !TREE_TYPE (type)) |
2661 | type_name = IDENTIFIER_POINTER (TYPE_NAME (type)); | |
b67d701b | 2662 | else |
0a2138e2 | 2663 | type_name = lang_printable_name (type, 0); |
b67d701b PB |
2664 | |
2665 | parse_error_context (context, | |
2666 | "Variable `%s' is already defined in this method and " | |
2667 | "was declared `%s %s' at line %d", | |
2668 | IDENTIFIER_POINTER (name), | |
2669 | type_name, IDENTIFIER_POINTER (name), line); | |
2670 | } | |
2671 | ||
c583dd46 APB |
2672 | static tree |
2673 | build_array_from_name (type, type_wfl, name, ret_name) | |
2674 | tree type, type_wfl, name, *ret_name; | |
2675 | { | |
2676 | int more_dims = 0; | |
2677 | char *string; | |
2678 | ||
2679 | /* Eventually get more dims */ | |
2680 | string = IDENTIFIER_POINTER (name); | |
2681 | while (string [more_dims] == '[') | |
2682 | more_dims++; | |
2683 | ||
2684 | /* If we have, then craft a new type for this variable */ | |
2685 | if (more_dims) | |
2686 | { | |
2687 | name = get_identifier (&more_dims [string]); | |
2688 | ||
34f4db93 APB |
2689 | /* If we have a pointer, use its type */ |
2690 | if (TREE_CODE (type) == POINTER_TYPE) | |
2691 | type = TREE_TYPE (type); | |
c583dd46 APB |
2692 | |
2693 | /* Building the first dimension of a primitive type uses this | |
2694 | function */ | |
2695 | if (JPRIMITIVE_TYPE_P (type)) | |
2696 | { | |
2697 | type = build_java_array_type (type, -1); | |
22eed1e6 | 2698 | CLASS_LOADED_P (type) = 1; |
c583dd46 APB |
2699 | more_dims--; |
2700 | } | |
2701 | /* Otherwise, if we have a WFL for this type, use it (the type | |
2702 | is already an array on an unresolved type, and we just keep | |
2703 | on adding dimensions) */ | |
2704 | else if (type_wfl) | |
2705 | type = type_wfl; | |
2706 | ||
2707 | /* Add all the dimensions */ | |
2708 | while (more_dims--) | |
2709 | type = build_unresolved_array_type (type); | |
2710 | ||
2711 | /* The type may have been incomplete in the first place */ | |
2712 | if (type_wfl) | |
2713 | type = obtain_incomplete_type (type); | |
2714 | } | |
2715 | ||
2716 | *ret_name = name; | |
2717 | return type; | |
2718 | } | |
2719 | ||
e04a16fb AG |
2720 | /* Build something that the type identifier resolver will identify as |
2721 | being an array to an unresolved type. TYPE_WFL is a WFL on a | |
2722 | identifier. */ | |
2723 | ||
2724 | static tree | |
2725 | build_unresolved_array_type (type_or_wfl) | |
2726 | tree type_or_wfl; | |
2727 | { | |
2728 | char *ptr; | |
2729 | ||
1886c9d8 | 2730 | /* TYPE_OR_WFL might be an array on a resolved type. In this case, |
e04a16fb AG |
2731 | just create a array type */ |
2732 | if (TREE_CODE (type_or_wfl) == RECORD_TYPE) | |
2733 | { | |
2734 | tree type = build_java_array_type (type_or_wfl, -1); | |
2735 | CLASS_LOADED_P (type) = CLASS_LOADED_P (type_or_wfl); | |
2736 | return type; | |
2737 | } | |
2738 | ||
2739 | obstack_1grow (&temporary_obstack, '['); | |
2740 | obstack_grow0 (&temporary_obstack, | |
2741 | IDENTIFIER_POINTER (EXPR_WFL_NODE (type_or_wfl)), | |
2742 | IDENTIFIER_LENGTH (EXPR_WFL_NODE (type_or_wfl))); | |
2743 | ptr = obstack_finish (&temporary_obstack); | |
2744 | return build_expr_wfl (get_identifier (ptr), | |
2745 | EXPR_WFL_FILENAME (type_or_wfl), | |
2746 | EXPR_WFL_LINENO (type_or_wfl), | |
2747 | EXPR_WFL_COLNO (type_or_wfl)); | |
2748 | } | |
2749 | ||
2750 | /* Check modifiers. If one doesn't fit, retrieve it in its declaration line | |
2751 | and point it out. */ | |
2752 | ||
2753 | static void | |
2754 | check_modifiers (message, value, mask) | |
2755 | char *message; | |
2756 | int value; | |
2757 | int mask; | |
2758 | { | |
2759 | /* Should point out the one that don't fit. ASCII/unicode, | |
2760 | going backward. FIXME */ | |
2761 | if (value & ~mask) | |
2762 | { | |
2763 | int i, remainder = value & ~mask; | |
2764 | for (i = 0; i <= 10; i++) | |
2765 | if ((1 << i) & remainder) | |
2766 | parse_error_context (ctxp->modifier_ctx [i], message, | |
2767 | java_accstring_lookup (1 << i)); | |
2768 | } | |
2769 | } | |
2770 | ||
2771 | static void | |
2772 | parser_add_interface (class_decl, interface_decl, wfl) | |
2773 | tree class_decl, interface_decl, wfl; | |
2774 | { | |
2775 | if (maybe_add_interface (TREE_TYPE (class_decl), TREE_TYPE (interface_decl))) | |
2776 | parse_error_context (wfl, "Interface `%s' repeated", | |
2777 | IDENTIFIER_POINTER (DECL_NAME (interface_decl))); | |
2778 | } | |
2779 | ||
2780 | /* Bulk of common class/interface checks. Return 1 if an error was | |
2781 | encountered. TAG is 0 for a class, 1 for an interface. */ | |
2782 | ||
2783 | static int | |
2784 | check_class_interface_creation (is_interface, flags, raw_name, qualified_name, decl, cl) | |
2785 | int is_interface, flags; | |
2786 | tree raw_name, qualified_name, decl, cl; | |
2787 | { | |
2788 | tree node; | |
2789 | ||
2790 | if (!quiet_flag) | |
2791 | fprintf (stderr, " %s %s", (is_interface ? "interface" : "class"), | |
2792 | IDENTIFIER_POINTER (qualified_name)); | |
2793 | ||
2794 | /* Scope of an interface/class type name: | |
2795 | - Can't be imported by a single type import | |
2796 | - Can't already exists in the package */ | |
2797 | if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (raw_name) | |
2798 | && (node = find_name_in_single_imports (raw_name))) | |
2799 | { | |
2800 | parse_error_context | |
2801 | (cl, "%s name `%s' clashes with imported type `%s'", | |
2802 | (is_interface ? "Interface" : "Class"), | |
2803 | IDENTIFIER_POINTER (raw_name), IDENTIFIER_POINTER (node)); | |
2804 | return 1; | |
2805 | } | |
2806 | if (decl && CLASS_COMPLETE_P (decl)) | |
2807 | { | |
b67d701b PB |
2808 | classitf_redefinition_error ((is_interface ? "Interface" : "Class"), |
2809 | qualified_name, decl, cl); | |
e04a16fb AG |
2810 | return 1; |
2811 | } | |
2812 | ||
2813 | /* If public, file name should match class/interface name */ | |
2814 | if (flags & ACC_PUBLIC) | |
2815 | { | |
2816 | char *f; | |
2817 | ||
2818 | /* Contains OS dependent assumption on path separator. FIXME */ | |
2819 | for (f = &input_filename [strlen (input_filename)]; | |
fa322ab5 TT |
2820 | f != input_filename && f[0] != '/' && f[0] != DIR_SEPARATOR; |
2821 | f--) | |
2822 | ; | |
847fe791 | 2823 | if (f[0] == '/' || f[0] == DIR_SEPARATOR) |
e04a16fb AG |
2824 | f++; |
2825 | if (strncmp (IDENTIFIER_POINTER (raw_name), | |
2826 | f , IDENTIFIER_LENGTH (raw_name)) || | |
2827 | f [IDENTIFIER_LENGTH (raw_name)] != '.') | |
2828 | parse_error_context (cl, "Public %s `%s' must be defined in a file " | |
2829 | "called `%s.java'", | |
2830 | (is_interface ? "interface" : "class"), | |
2831 | IDENTIFIER_POINTER (qualified_name), | |
2832 | IDENTIFIER_POINTER (raw_name)); | |
2833 | } | |
2834 | ||
2835 | check_modifiers ((is_interface ? | |
2836 | "Illegal modifier `%s' for interface declaration" : | |
2837 | "Illegal modifier `%s' for class declaration"), flags, | |
2838 | (is_interface ? INTERFACE_MODIFIERS : CLASS_MODIFIERS)); | |
2839 | return 0; | |
2840 | } | |
2841 | ||
2842 | /* If DECL is NULL, create and push a new DECL, record the current | |
2843 | line CL and do other maintenance things. */ | |
2844 | ||
2845 | static tree | |
2846 | maybe_create_class_interface_decl (decl, qualified_name, cl) | |
2847 | tree decl, qualified_name, cl; | |
2848 | { | |
5e942c50 | 2849 | if (!decl) |
e04a16fb AG |
2850 | decl = push_class (make_class (), qualified_name); |
2851 | ||
2852 | /* Take care of the file and line business */ | |
2853 | DECL_SOURCE_FILE (decl) = EXPR_WFL_FILENAME (cl); | |
2854 | DECL_SOURCE_LINE (decl) = EXPR_WFL_LINENO (cl); | |
2855 | CLASS_FROM_SOURCE_P (TREE_TYPE (decl)) = 1; | |
b351b287 APB |
2856 | CLASS_FROM_CURRENTLY_COMPILED_SOURCE_P (TREE_TYPE (decl)) = |
2857 | IS_A_COMMAND_LINE_FILENAME_P (EXPR_WFL_FILENAME_NODE (cl)); | |
e04a16fb AG |
2858 | |
2859 | ctxp->current_parsed_class = decl; | |
2860 | ||
2861 | /* Link the declaration to the already seen ones */ | |
2862 | TREE_CHAIN (decl) = ctxp->class_list; | |
2863 | ctxp->class_list = decl; | |
5e942c50 | 2864 | |
23a79c61 | 2865 | /* Create a new nodes in the global lists */ |
5e942c50 | 2866 | ctxp->gclass_list = tree_cons (NULL_TREE, decl, ctxp->gclass_list); |
23a79c61 | 2867 | all_class_list = tree_cons (NULL_TREE, decl, all_class_list); |
5e942c50 | 2868 | |
e04a16fb AG |
2869 | /* Install a new dependency list element */ |
2870 | create_jdep_list (ctxp); | |
2871 | ||
2872 | SOURCE_FRONTEND_DEBUG (("Defining class/interface %s", | |
2873 | IDENTIFIER_POINTER (qualified_name))); | |
2874 | return decl; | |
2875 | } | |
2876 | ||
2877 | static void | |
2878 | add_superinterfaces (decl, interface_list) | |
2879 | tree decl, interface_list; | |
2880 | { | |
2881 | tree node; | |
2882 | /* Superinterface(s): if present and defined, parser_check_super_interface () | |
2883 | takes care of ensuring that: | |
2884 | - This is an accessible interface type, | |
2885 | - Circularity detection. | |
2886 | parser_add_interface is then called. If present but not defined, | |
2887 | the check operation is delayed until the super interface gets | |
2888 | defined. */ | |
2889 | for (node = interface_list; node; node = TREE_CHAIN (node)) | |
2890 | { | |
15fdcfe9 | 2891 | tree current = TREE_PURPOSE (node); |
5e942c50 APB |
2892 | tree idecl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (current)); |
2893 | if (idecl && CLASS_LOADED_P (TREE_TYPE (idecl))) | |
e04a16fb | 2894 | { |
5e942c50 APB |
2895 | if (!parser_check_super_interface (idecl, decl, current)) |
2896 | parser_add_interface (decl, idecl, current); | |
e04a16fb AG |
2897 | } |
2898 | else | |
2899 | register_incomplete_type (JDEP_INTERFACE, | |
2900 | current, decl, NULL_TREE); | |
2901 | } | |
2902 | } | |
2903 | ||
2904 | /* Create an interface in pass1 and return its decl. Return the | |
2905 | interface's decl in pass 2. */ | |
2906 | ||
2907 | static tree | |
2908 | create_interface (flags, id, super) | |
2909 | int flags; | |
2910 | tree id, super; | |
2911 | { | |
e04a16fb AG |
2912 | tree raw_name = EXPR_WFL_NODE (id); |
2913 | tree q_name = parser_qualified_classname (id); | |
2914 | tree decl = IDENTIFIER_CLASS_VALUE (q_name); | |
2915 | ||
2916 | EXPR_WFL_NODE (id) = q_name; /* Keep source location, even if refined. */ | |
2917 | ||
2918 | /* Basic checks: scope, redefinition, modifiers */ | |
2919 | if (check_class_interface_creation (1, flags, raw_name, q_name, decl, id)) | |
2920 | return NULL_TREE; | |
2921 | ||
2922 | /* Interface modifiers check | |
2923 | - public/abstract allowed (already done at that point) | |
2924 | - abstract is obsolete (comes first, it's a warning, or should be) | |
2925 | - Can't use twice the same (checked in the modifier rule) */ | |
c877974e | 2926 | if ((flags & ACC_ABSTRACT) && flag_redundant) |
e04a16fb AG |
2927 | parse_warning_context |
2928 | (MODIFIER_WFL (ABSTRACT_TK), | |
c877974e | 2929 | "Redundant use of `abstract' modifier. Interface `%s' is implicitely " |
e04a16fb | 2930 | "abstract", IDENTIFIER_POINTER (raw_name)); |
e04a16fb AG |
2931 | |
2932 | /* Create a new decl if DECL is NULL, otherwise fix it */ | |
2933 | decl = maybe_create_class_interface_decl (decl, q_name, id); | |
2934 | ||
2935 | /* Set super info and mark the class a complete */ | |
2936 | set_super_info (ACC_ABSTRACT | ACC_INTERFACE | flags, TREE_TYPE (decl), | |
2937 | object_type_node, ctxp->interface_number); | |
2938 | ctxp->interface_number = 0; | |
2939 | CLASS_COMPLETE_P (decl) = 1; | |
2940 | add_superinterfaces (decl, super); | |
2941 | ||
2942 | return decl; | |
2943 | } | |
2944 | ||
2945 | /* Create an class in pass1 and return its decl. Return class | |
2946 | interface's decl in pass 2. */ | |
2947 | ||
2948 | static tree | |
2949 | create_class (flags, id, super, interfaces) | |
2950 | int flags; | |
2951 | tree id, super, interfaces; | |
2952 | { | |
e04a16fb AG |
2953 | tree raw_name = EXPR_WFL_NODE (id); |
2954 | tree class_id, decl; | |
2955 | tree super_decl = NULL, super_decl_type; | |
2956 | ||
2957 | class_id = parser_qualified_classname (id); | |
2958 | decl = IDENTIFIER_CLASS_VALUE (class_id); | |
5e942c50 | 2959 | ctxp->current_parsed_class_un = EXPR_WFL_NODE (id); |
e04a16fb AG |
2960 | EXPR_WFL_NODE (id) = class_id; |
2961 | ||
2962 | /* Basic check: scope, redefinition, modifiers */ | |
2963 | if (check_class_interface_creation (0, flags, raw_name, class_id, decl, id)) | |
2964 | return NULL_TREE; | |
2965 | ||
2966 | /* Class modifier check: | |
2967 | - Allowed modifier (already done at that point) | |
2968 | - abstract AND final forbidden | |
2969 | - Public classes defined in the correct file */ | |
2970 | if ((flags & ACC_ABSTRACT) && (flags & ACC_FINAL)) | |
2971 | parse_error_context (id, "Class `%s' can't be declared both abstract " | |
2972 | "and final", IDENTIFIER_POINTER (raw_name)); | |
2973 | ||
2974 | /* Create a new decl if DECL is NULL, otherwise fix it */ | |
2975 | decl = maybe_create_class_interface_decl (decl, class_id, id); | |
2976 | ||
2977 | /* If SUPER exists, use it, otherwise use Object */ | |
2978 | if (super) | |
2979 | { | |
2980 | /* Can't extend java.lang.Object */ | |
2981 | if (TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_id)) == object_type_node) | |
2982 | { | |
2983 | parse_error_context (id, "Can't extend `java.lang.Object'"); | |
2984 | return NULL_TREE; | |
2985 | } | |
2986 | ||
2987 | /* The class is known and exists if there is a decl. Otherwise, | |
2988 | postpone the operation and do it later. */ | |
2989 | super_decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (super)); | |
2990 | if (super_decl) | |
2991 | { | |
2992 | parser_check_super (super_decl, decl, id); | |
2993 | super_decl_type = TREE_TYPE (super_decl); | |
2994 | } | |
2995 | else | |
2996 | super_decl_type = | |
2997 | register_incomplete_type (JDEP_SUPER, super, decl, NULL_TREE); | |
2998 | } | |
2999 | else if (TREE_TYPE (decl) != object_type_node) | |
3000 | super_decl_type = object_type_node; | |
3001 | /* We're defining java.lang.Object */ | |
3002 | else | |
3003 | super_decl_type = NULL_TREE; | |
3004 | ||
3005 | /* Set super info and mark the class a complete */ | |
3006 | set_super_info (flags, TREE_TYPE (decl), super_decl_type, | |
3007 | ctxp->interface_number); | |
3008 | ctxp->interface_number = 0; | |
3009 | CLASS_COMPLETE_P (decl) = 1; | |
3010 | add_superinterfaces (decl, interfaces); | |
3011 | ||
5e942c50 APB |
3012 | /* Eventually sets the @deprecated tag flag */ |
3013 | CHECK_DEPRECATED (decl); | |
3014 | ||
e04a16fb AG |
3015 | return decl; |
3016 | } | |
3017 | ||
3018 | /* Can't use lookup_field () since we don't want to load the class and | |
3019 | can't set the CLASS_LOADED_P flag */ | |
3020 | ||
3021 | static tree | |
3022 | find_field (class, name) | |
3023 | tree class; | |
3024 | tree name; | |
3025 | { | |
3026 | tree decl; | |
3027 | for (decl = TYPE_FIELDS (class); decl; decl = TREE_CHAIN (decl)) | |
3028 | { | |
3029 | if (DECL_NAME (decl) == name) | |
3030 | return decl; | |
3031 | } | |
3032 | return NULL_TREE; | |
3033 | } | |
3034 | ||
3035 | /* Wrap around lookup_field that doesn't potentially upset the value | |
3036 | of CLASS */ | |
3037 | ||
3038 | static tree | |
3039 | lookup_field_wrapper (class, name) | |
3040 | tree class, name; | |
3041 | { | |
3042 | tree type = class; | |
5b09b33e | 3043 | tree decl; |
c877974e | 3044 | java_parser_context_save_global (); |
5b09b33e | 3045 | decl = lookup_field (&type, name); |
c877974e | 3046 | java_parser_context_restore_global (); |
5b09b33e | 3047 | return decl; |
e04a16fb AG |
3048 | } |
3049 | ||
3050 | /* Find duplicate field within the same class declarations and report | |
c583dd46 APB |
3051 | the error. Returns 1 if a duplicated field was found, 0 |
3052 | otherwise. */ | |
e04a16fb AG |
3053 | |
3054 | static int | |
c583dd46 | 3055 | duplicate_declaration_error_p (new_field_name, new_type, cl) |
0a2138e2 | 3056 | tree new_field_name, new_type, cl; |
e04a16fb AG |
3057 | { |
3058 | /* This might be modified to work with method decl as well */ | |
3059 | tree decl = find_field (TREE_TYPE (ctxp->current_parsed_class), | |
3060 | new_field_name); | |
3061 | if (decl) | |
3062 | { | |
4a5f66c3 APB |
3063 | char *t1 = strdup (purify_type_name |
3064 | ((TREE_CODE (new_type) == POINTER_TYPE | |
3065 | && TREE_TYPE (new_type) == NULL_TREE) ? | |
3066 | IDENTIFIER_POINTER (TYPE_NAME (new_type)) : | |
3067 | lang_printable_name (new_type, 1))); | |
c877974e APB |
3068 | /* The type may not have been completed by the time we report |
3069 | the error */ | |
4a5f66c3 APB |
3070 | char *t2 = strdup (purify_type_name |
3071 | ((TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE | |
c877974e APB |
3072 | && TREE_TYPE (TREE_TYPE (decl)) == NULL_TREE) ? |
3073 | IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))) : | |
3074 | lang_printable_name (TREE_TYPE (decl), 1))); | |
e04a16fb AG |
3075 | parse_error_context |
3076 | (cl , "Duplicate variable declaration: `%s %s' was `%s %s' (%s:%d)", | |
3077 | t1, IDENTIFIER_POINTER (new_field_name), | |
3078 | t2, IDENTIFIER_POINTER (DECL_NAME (decl)), | |
3079 | DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl)); | |
3080 | free (t1); | |
3081 | free (t2); | |
c583dd46 | 3082 | return 1; |
e04a16fb | 3083 | } |
c583dd46 | 3084 | return 0; |
e04a16fb AG |
3085 | } |
3086 | ||
3087 | /* Field registration routine. If TYPE doesn't exist, field | |
3088 | declarations are linked to the undefined TYPE dependency list, to | |
3089 | be later resolved in java_complete_class () */ | |
3090 | ||
3091 | static void | |
3092 | register_fields (flags, type, variable_list) | |
3093 | int flags; | |
3094 | tree type, variable_list; | |
3095 | { | |
c583dd46 | 3096 | tree current, saved_type; |
e04a16fb AG |
3097 | tree class_type = TREE_TYPE (ctxp->current_parsed_class); |
3098 | int saved_lineno = lineno; | |
3099 | int must_chain = 0; | |
3100 | tree wfl = NULL_TREE; | |
3101 | ||
3102 | /* If we're adding fields to interfaces, those fields are public, | |
3103 | static, final */ | |
3104 | if (CLASS_INTERFACE (TYPE_NAME (class_type))) | |
3105 | { | |
3106 | OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (PUBLIC_TK), | |
3107 | flags, ACC_PUBLIC, | |
3108 | "%s", "interface field(s)"); | |
3109 | OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (STATIC_TK), | |
3110 | flags, ACC_STATIC, | |
3111 | "%s", "interface field(s)"); | |
3112 | OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (FINAL_TK), | |
3113 | flags, ACC_FINAL, "%s", "interface field(s)"); | |
3114 | check_modifiers ("Illegal interface member modifier `%s'", flags, | |
3115 | INTERFACE_FIELD_MODIFIERS); | |
3116 | flags |= (ACC_PUBLIC | ACC_STATIC | ACC_FINAL); | |
3117 | } | |
3118 | ||
c583dd46 APB |
3119 | /* Obtain a suitable type for resolution, if necessary */ |
3120 | SET_TYPE_FOR_RESOLUTION (type, wfl, must_chain); | |
3121 | ||
3122 | /* If TYPE is fully resolved and we don't have a reference, make one */ | |
1886c9d8 | 3123 | PROMOTE_RECORD_IF_COMPLETE (type, must_chain); |
e04a16fb | 3124 | |
c583dd46 APB |
3125 | for (current = variable_list, saved_type = type; current; |
3126 | current = TREE_CHAIN (current), type = saved_type) | |
e04a16fb | 3127 | { |
c877974e | 3128 | tree real_type; |
c583dd46 | 3129 | tree field_decl; |
e04a16fb AG |
3130 | tree cl = TREE_PURPOSE (current); |
3131 | tree init = TREE_VALUE (current); | |
3132 | tree current_name = EXPR_WFL_NODE (cl); | |
3133 | ||
c583dd46 APB |
3134 | /* Process NAME, as it may specify extra dimension(s) for it */ |
3135 | type = build_array_from_name (type, wfl, current_name, ¤t_name); | |
3136 | ||
c583dd46 APB |
3137 | /* Type adjustment. We may have just readjusted TYPE because |
3138 | the variable specified more dimensions. Make sure we have | |
22eed1e6 APB |
3139 | a reference if we can and don't have one already. Also |
3140 | change the name if we have an init. */ | |
3141 | if (type != saved_type) | |
3142 | { | |
1886c9d8 | 3143 | PROMOTE_RECORD_IF_COMPLETE (type, must_chain); |
22eed1e6 APB |
3144 | if (init) |
3145 | EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = current_name; | |
3146 | } | |
e04a16fb | 3147 | |
c877974e APB |
3148 | real_type = GET_REAL_TYPE (type); |
3149 | /* Check for redeclarations */ | |
3150 | if (duplicate_declaration_error_p (current_name, real_type, cl)) | |
3151 | continue; | |
3152 | ||
c583dd46 | 3153 | /* Set lineno to the line the field was found and create a |
5e942c50 | 3154 | declaration for it. Eventually sets the @deprecated tag flag. */ |
c583dd46 | 3155 | lineno = EXPR_WFL_LINENO (cl); |
c877974e | 3156 | field_decl = add_field (class_type, current_name, real_type, flags); |
5e942c50 | 3157 | CHECK_DEPRECATED (field_decl); |
c583dd46 APB |
3158 | |
3159 | /* Check if we must chain. */ | |
3160 | if (must_chain) | |
3161 | register_incomplete_type (JDEP_FIELD, wfl, field_decl, type); | |
e04a16fb | 3162 | |
c583dd46 APB |
3163 | /* Default value of a static field is 0 and it is considered |
3164 | initialized. */ | |
3165 | if (flags & ACC_STATIC) | |
3166 | INITIALIZED_P (field_decl) = 1; | |
3167 | ||
3168 | /* If we have an initialization value tied to the field */ | |
3169 | if (init) | |
3170 | { | |
3171 | /* The field is declared static */ | |
e04a16fb | 3172 | if (flags & ACC_STATIC) |
e04a16fb | 3173 | { |
7525cc04 APB |
3174 | /* We include the field and its initialization part into |
3175 | a list used to generate <clinit>. After <clinit> is | |
ba179f9f APB |
3176 | walked, field initializations will be processed and |
3177 | fields initialized with known constants will be taken | |
3178 | out of <clinit> and have their DECL_INITIAL set | |
7525cc04 APB |
3179 | appropriately. */ |
3180 | TREE_CHAIN (init) = ctxp->static_initialized; | |
3181 | ctxp->static_initialized = init; | |
5b09b33e | 3182 | DECL_INITIAL (field_decl) = TREE_OPERAND (init, 1); |
bc3ca41b | 3183 | if (TREE_CODE (TREE_OPERAND (init, 1)) == NEW_ARRAY_INIT) |
5bba4807 | 3184 | TREE_STATIC (TREE_OPERAND (init, 1)) = 1; |
e04a16fb | 3185 | } |
5e942c50 APB |
3186 | /* A non-static field declared with an immediate initialization is |
3187 | to be initialized in <init>, if any. This field is remembered | |
3188 | to be processed at the time of the generation of <init>. */ | |
c583dd46 APB |
3189 | else |
3190 | { | |
3191 | TREE_CHAIN (init) = ctxp->non_static_initialized; | |
3192 | ctxp->non_static_initialized = init; | |
3193 | } | |
7525cc04 | 3194 | INITIALIZED_P (field_decl) = 1; |
5b09b33e | 3195 | MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1; |
e04a16fb AG |
3196 | } |
3197 | } | |
3198 | lineno = saved_lineno; | |
3199 | } | |
3200 | ||
89e09b9a | 3201 | /* Generate the method $finit$ that initializes fields initialized |
22eed1e6 APB |
3202 | upon declaration. */ |
3203 | ||
3204 | static void | |
3205 | maybe_generate_finit () | |
3206 | { | |
3207 | tree mdecl, current; | |
3208 | ||
3209 | if (!ctxp->non_static_initialized || java_error_count) | |
3210 | return; | |
3211 | ||
3212 | mdecl = create_artificial_method (TREE_TYPE (ctxp->current_parsed_class), | |
89e09b9a | 3213 | ACC_PRIVATE, void_type_node, |
de4c7b02 | 3214 | finit_identifier_node, end_params_node); |
22eed1e6 APB |
3215 | start_artificial_method_body (mdecl); |
3216 | ||
3217 | ctxp->non_static_initialized = nreverse (ctxp->non_static_initialized); | |
3218 | for (current = ctxp->non_static_initialized; current; | |
3219 | current = TREE_CHAIN (current)) | |
3220 | java_method_add_stmt (mdecl, | |
3221 | build_debugable_stmt (EXPR_WFL_LINECOL (current), | |
3222 | current)); | |
3223 | ||
3224 | end_artificial_method_body (mdecl); | |
3225 | CLASS_HAS_FINIT_P (TREE_TYPE (ctxp->current_parsed_class)) = 1; | |
3226 | ctxp->non_static_initialized = NULL_TREE; | |
3227 | } | |
3228 | ||
e04a16fb AG |
3229 | /* Check whether it is necessary to generate a <clinit> for the class |
3230 | we just parsed. */ | |
3231 | ||
3232 | static void | |
3233 | maybe_generate_clinit () | |
3234 | { | |
22eed1e6 | 3235 | tree mdecl, c; |
e04a16fb AG |
3236 | |
3237 | if (!ctxp->static_initialized || java_error_count) | |
3238 | return; | |
3239 | ||
22eed1e6 APB |
3240 | mdecl = create_artificial_method (TREE_TYPE (ctxp->current_parsed_class), |
3241 | ACC_STATIC, void_type_node, | |
de4c7b02 | 3242 | clinit_identifier_node, end_params_node); |
22eed1e6 | 3243 | start_artificial_method_body (mdecl); |
e04a16fb AG |
3244 | |
3245 | /* Keep initialization in order to enforce 8.5 */ | |
3246 | ctxp->static_initialized = nreverse (ctxp->static_initialized); | |
3247 | ||
3248 | /* We process the list of assignment we produced as the result of | |
3249 | the declaration of initialized static field and add them as | |
3250 | statement to the <clinit> method. */ | |
3251 | for (c = ctxp->static_initialized; c; c = TREE_CHAIN (c)) | |
3252 | { | |
3253 | /* We build the assignment expression that will initialize the | |
3254 | field to its value. There are strict rules on static | |
3255 | initializers (8.5). FIXME */ | |
22eed1e6 APB |
3256 | java_method_add_stmt (mdecl, |
3257 | build_debugable_stmt (EXPR_WFL_LINECOL (c), c)); | |
e04a16fb AG |
3258 | } |
3259 | ||
22eed1e6 | 3260 | end_artificial_method_body (mdecl); |
e04a16fb AG |
3261 | ctxp->static_initialized = NULL_TREE; |
3262 | } | |
3263 | ||
3264 | /* Shared accros method_declarator and method_header to remember the | |
3265 | patch stage that was reached during the declaration of the method. | |
3266 | A method DECL is built differently is there is no patch | |
3267 | (JDEP_NO_PATCH) or a patch (JDEP_METHOD or JDEP_METHOD_RETURN) | |
3268 | pending on the currently defined method. */ | |
3269 | ||
3270 | static int patch_stage; | |
3271 | ||
3272 | /* Check the method declaration and add the method to its current | |
3273 | class. If the argument list is known to contain incomplete types, | |
3274 | the method is partially added and the registration will be resume | |
22eed1e6 APB |
3275 | once the method arguments resolved. If TYPE is NULL, we're dealing |
3276 | with a constructor. */ | |
e04a16fb AG |
3277 | |
3278 | static tree | |
3279 | method_header (flags, type, mdecl, throws) | |
3280 | int flags; | |
3281 | tree type, mdecl, throws; | |
3282 | { | |
3283 | tree meth = TREE_VALUE (mdecl); | |
3284 | tree id = TREE_PURPOSE (mdecl); | |
3285 | tree this_class = TREE_TYPE (ctxp->current_parsed_class); | |
1886c9d8 | 3286 | tree type_wfl = NULL_TREE; |
4a5f66c3 | 3287 | tree meth_name = NULL_TREE, current, orig_arg; |
e04a16fb | 3288 | int saved_lineno; |
1886c9d8 | 3289 | int constructor_ok = 0, must_chain; |
e04a16fb AG |
3290 | |
3291 | check_modifiers_consistency (flags); | |
3292 | ||
3293 | /* There are some forbidden modifiers for an abstract method and its | |
3294 | class must be abstract as well. */ | |
22eed1e6 | 3295 | if (type && (flags & ACC_ABSTRACT)) |
e04a16fb AG |
3296 | { |
3297 | ABSTRACT_CHECK (flags, ACC_PRIVATE, id, "Private"); | |
3298 | ABSTRACT_CHECK (flags, ACC_STATIC, id, "Static"); | |
3299 | ABSTRACT_CHECK (flags, ACC_FINAL, id, "Final"); | |
3300 | ABSTRACT_CHECK (flags, ACC_NATIVE, id, "Native"); | |
3301 | ABSTRACT_CHECK (flags, ACC_SYNCHRONIZED,id, "Synchronized"); | |
3302 | if (!CLASS_ABSTRACT (TYPE_NAME (this_class))) | |
3303 | parse_error_context | |
3304 | (id, "Class `%s' must be declared abstract to define abstract " | |
3305 | "method `%s'", | |
3306 | IDENTIFIER_POINTER (DECL_NAME (ctxp->current_parsed_class)), | |
3307 | IDENTIFIER_POINTER (EXPR_WFL_NODE (id))); | |
3308 | } | |
22eed1e6 APB |
3309 | /* Things to be checked when declaring a constructor */ |
3310 | if (!type) | |
3311 | { | |
3312 | int ec = java_error_count; | |
3313 | /* 8.6: Constructor declarations: we might be trying to define a | |
3314 | method without specifying a return type. */ | |
5e942c50 | 3315 | if (EXPR_WFL_NODE (id) != ctxp->current_parsed_class_un) |
22eed1e6 APB |
3316 | parse_error_context |
3317 | (id, "Invalid method declaration, return type required"); | |
3318 | /* 8.6.3: Constructor modifiers */ | |
3319 | else | |
3320 | { | |
3321 | JCONSTRUCTOR_CHECK (flags, ACC_ABSTRACT, id, "abstract"); | |
3322 | JCONSTRUCTOR_CHECK (flags, ACC_STATIC, id, "static"); | |
3323 | JCONSTRUCTOR_CHECK (flags, ACC_FINAL, id, "final"); | |
3324 | JCONSTRUCTOR_CHECK (flags, ACC_NATIVE, id, "native"); | |
3325 | JCONSTRUCTOR_CHECK (flags, ACC_SYNCHRONIZED, id, "synchronized"); | |
3326 | } | |
3327 | /* If we found error here, we don't consider it's OK to tread | |
3328 | the method definition as a constructor, for the rest of this | |
3329 | function */ | |
3330 | if (ec == java_error_count) | |
3331 | constructor_ok = 1; | |
3332 | } | |
e04a16fb AG |
3333 | |
3334 | /* Method declared within the scope of an interface are implicitly | |
3335 | abstract and public. Conflicts with other erroneously provided | |
3336 | modifiers are check right after. */ | |
3337 | ||
3338 | if (CLASS_INTERFACE (TYPE_NAME (this_class))) | |
3339 | { | |
3340 | /* If FLAGS isn't set because of a modifier, turn the | |
3341 | corresponding modifier WFL to NULL so we issue a warning on | |
3342 | the obsolete use of the modifier */ | |
3343 | if (!(flags & ACC_PUBLIC)) | |
3344 | MODIFIER_WFL (PUBLIC_TK) = NULL; | |
3345 | if (!(flags & ACC_ABSTRACT)) | |
3346 | MODIFIER_WFL (ABSTRACT_TK) = NULL; | |
3347 | flags |= ACC_PUBLIC; | |
3348 | flags |= ACC_ABSTRACT; | |
3349 | } | |
3350 | ||
3351 | /* Modifiers context reset moved up, so abstract method declaration | |
3352 | modifiers can be later checked. */ | |
3353 | ||
22eed1e6 APB |
3354 | /* Set constructor returned type to void and method name to <init>, |
3355 | unless we found an error identifier the constructor (in which | |
3356 | case we retain the original name) */ | |
3357 | if (!type) | |
3358 | { | |
3359 | type = void_type_node; | |
3360 | if (constructor_ok) | |
3361 | meth_name = init_identifier_node; | |
3362 | } | |
3363 | else | |
3364 | meth_name = EXPR_WFL_NODE (id); | |
e04a16fb | 3365 | |
1886c9d8 APB |
3366 | /* Do the returned type resolution and registration if necessary */ |
3367 | SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain); | |
3368 | ||
4a5f66c3 APB |
3369 | if (meth_name) |
3370 | type = build_array_from_name (type, type_wfl, meth_name, &meth_name); | |
1886c9d8 APB |
3371 | EXPR_WFL_NODE (id) = meth_name; |
3372 | PROMOTE_RECORD_IF_COMPLETE (type, must_chain); | |
3373 | ||
3374 | if (must_chain) | |
e04a16fb | 3375 | { |
1886c9d8 APB |
3376 | patch_stage = JDEP_METHOD_RETURN; |
3377 | register_incomplete_type (patch_stage, type_wfl, id, type); | |
3378 | TREE_TYPE (meth) = GET_REAL_TYPE (type); | |
e04a16fb AG |
3379 | } |
3380 | else | |
1886c9d8 | 3381 | TREE_TYPE (meth) = type; |
e04a16fb AG |
3382 | |
3383 | saved_lineno = lineno; | |
3384 | /* When defining an abstract or interface method, the curly | |
3385 | bracket at level 1 doesn't exist because there is no function | |
3386 | body */ | |
3387 | lineno = (ctxp->first_ccb_indent1 ? ctxp->first_ccb_indent1 : | |
3388 | EXPR_WFL_LINENO (id)); | |
3389 | ||
5e942c50 APB |
3390 | /* Remember the original argument list */ |
3391 | orig_arg = TYPE_ARG_TYPES (meth); | |
3392 | ||
e04a16fb AG |
3393 | if (patch_stage) /* includes ret type and/or all args */ |
3394 | { | |
3395 | jdep *jdep; | |
3396 | meth = add_method_1 (this_class, flags, meth_name, meth); | |
3397 | /* Patch for the return type */ | |
3398 | if (patch_stage == JDEP_METHOD_RETURN) | |
3399 | { | |
3400 | jdep = CLASSD_LAST (ctxp->classd_list); | |
3401 | JDEP_GET_PATCH (jdep) = &TREE_TYPE (TREE_TYPE (meth)); | |
3402 | } | |
3403 | /* This is the stop JDEP. METH allows the function's signature | |
3404 | to be computed. */ | |
3405 | register_incomplete_type (JDEP_METHOD_END, NULL_TREE, meth, NULL_TREE); | |
3406 | } | |
3407 | else | |
5e942c50 APB |
3408 | meth = add_method (this_class, flags, meth_name, |
3409 | build_java_signature (meth)); | |
3410 | ||
3411 | /* Fix the method argument list so we have the argument name | |
3412 | information */ | |
3413 | fix_method_argument_names (orig_arg, meth); | |
3414 | ||
3415 | /* Register the parameter number and re-install the current line | |
3416 | number */ | |
e04a16fb AG |
3417 | DECL_MAX_LOCALS (meth) = ctxp->formal_parameter_number+1; |
3418 | lineno = saved_lineno; | |
b9f7e36c APB |
3419 | |
3420 | /* Register exception specified by the `throws' keyword for | |
3421 | resolution and set the method decl appropriate field to the list. | |
3422 | Note: the grammar ensures that what we get here are class | |
3423 | types. */ | |
3424 | if (throws) | |
3425 | { | |
3426 | throws = nreverse (throws); | |
3427 | for (current = throws; current; current = TREE_CHAIN (current)) | |
3428 | { | |
3429 | register_incomplete_type (JDEP_EXCEPTION, TREE_VALUE (current), | |
3430 | NULL_TREE, NULL_TREE); | |
3431 | JDEP_GET_PATCH (CLASSD_LAST (ctxp->classd_list)) = | |
3432 | &TREE_VALUE (current); | |
3433 | } | |
3434 | DECL_FUNCTION_THROWS (meth) = throws; | |
3435 | } | |
3436 | ||
e04a16fb AG |
3437 | /* We set the DECL_NAME to ID so we can track the location where |
3438 | the function was declared. This allow us to report | |
3439 | redefinition error accurately. When method are verified, | |
3440 | DECL_NAME is reinstalled properly (using the content of the | |
3441 | WFL node ID) (see check_method_redefinition). We don't do that | |
22eed1e6 APB |
3442 | when Object is being defined. Constructor <init> names will be |
3443 | reinstalled the same way. */ | |
e04a16fb AG |
3444 | if (TREE_TYPE (ctxp->current_parsed_class) != object_type_node) |
3445 | DECL_NAME (meth) = id; | |
22eed1e6 APB |
3446 | |
3447 | /* Set the flag if we correctly processed a constructor */ | |
3448 | if (constructor_ok) | |
3449 | DECL_CONSTRUCTOR_P (meth) = 1; | |
3450 | ||
5e942c50 APB |
3451 | /* Eventually set the @deprecated tag flag */ |
3452 | CHECK_DEPRECATED (meth); | |
3453 | ||
e04a16fb AG |
3454 | return meth; |
3455 | } | |
3456 | ||
5e942c50 APB |
3457 | static void |
3458 | fix_method_argument_names (orig_arg, meth) | |
3459 | tree orig_arg, meth; | |
3460 | { | |
3461 | tree arg = TYPE_ARG_TYPES (TREE_TYPE (meth)); | |
3462 | if (TREE_CODE (TREE_TYPE (meth)) == METHOD_TYPE) | |
3463 | { | |
3464 | TREE_PURPOSE (arg) = this_identifier_node; | |
3465 | arg = TREE_CHAIN (arg); | |
3466 | } | |
de4c7b02 | 3467 | while (orig_arg != end_params_node) |
5e942c50 APB |
3468 | { |
3469 | TREE_PURPOSE (arg) = TREE_PURPOSE (orig_arg); | |
3470 | orig_arg = TREE_CHAIN (orig_arg); | |
3471 | arg = TREE_CHAIN (arg); | |
3472 | } | |
3473 | } | |
3474 | ||
22eed1e6 APB |
3475 | /* Complete the method declaration with METHOD_BODY. */ |
3476 | ||
3477 | static void | |
3478 | complete_method_declaration (method_body) | |
3479 | tree method_body; | |
3480 | { | |
3481 | BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (current_function_decl)) = method_body; | |
3482 | maybe_absorb_scoping_blocks (); | |
3483 | /* Exit function's body */ | |
3484 | exit_block (); | |
3485 | /* Merge last line of the function with first line, directly in the | |
3486 | function decl. It will be used to emit correct debug info. */ | |
3487 | DECL_SOURCE_LINE_MERGE (current_function_decl, ctxp->last_ccb_indent1); | |
3488 | } | |
3489 | ||
3490 | /* Build a an error message for constructor circularity errors. */ | |
3491 | ||
3492 | static char * | |
3493 | constructor_circularity_msg (from, to) | |
3494 | tree from, to; | |
3495 | { | |
3496 | static char string [4096]; | |
3497 | char *t = strdup (lang_printable_name (from, 0)); | |
3498 | sprintf (string, "`%s' invokes `%s'", t, lang_printable_name (to, 0)); | |
3499 | free (t); | |
3500 | return string; | |
3501 | } | |
3502 | ||
3503 | /* Verify a circular call to METH. Return 1 if an error is found, 0 | |
3504 | otherwise. */ | |
3505 | ||
3506 | static int | |
3507 | verify_constructor_circularity (meth, current) | |
3508 | tree meth, current; | |
3509 | { | |
3510 | static tree list = NULL_TREE; | |
3511 | tree c; | |
3512 | for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c)) | |
3513 | { | |
3514 | if (TREE_VALUE (c) == meth) | |
3515 | { | |
3516 | char *t; | |
3517 | if (list) | |
3518 | { | |
3519 | tree liste; | |
3520 | list = nreverse (list); | |
3521 | for (liste = list; liste; liste = TREE_CHAIN (liste)) | |
3522 | { | |
3523 | parse_error_context | |
3524 | (TREE_PURPOSE (TREE_PURPOSE (liste)), | |
3525 | constructor_circularity_msg | |
3526 | (TREE_VALUE (liste), TREE_VALUE (TREE_PURPOSE (liste)))); | |
3527 | java_error_count--; | |
3528 | } | |
3529 | } | |
3530 | t = strdup (lang_printable_name (meth, 0)); | |
3531 | parse_error_context (TREE_PURPOSE (c), | |
3532 | "%s: recursive invocation of constructor `%s'", | |
3533 | constructor_circularity_msg (current, meth), t); | |
3534 | free (t); | |
3535 | list = NULL_TREE; | |
3536 | return 1; | |
3537 | } | |
3538 | } | |
3539 | for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c)) | |
3540 | { | |
3541 | list = tree_cons (c, current, list); | |
3542 | if (verify_constructor_circularity (meth, TREE_VALUE (c))) | |
3543 | return 1; | |
3544 | list = TREE_CHAIN (list); | |
3545 | } | |
3546 | return 0; | |
3547 | } | |
3548 | ||
e04a16fb AG |
3549 | /* Check modifiers that can be declared but exclusively */ |
3550 | ||
3551 | static void | |
3552 | check_modifiers_consistency (flags) | |
3553 | int flags; | |
3554 | { | |
3555 | int acc_count = 0; | |
3556 | tree cl = NULL_TREE; | |
3557 | ||
3558 | THIS_MODIFIER_ONLY (flags, ACC_PUBLIC, 0, acc_count, cl); | |
3559 | THIS_MODIFIER_ONLY (flags, ACC_PRIVATE, 1, acc_count, cl); | |
3560 | THIS_MODIFIER_ONLY (flags, ACC_PROTECTED, 2, acc_count, cl); | |
3561 | if (acc_count > 1) | |
3562 | parse_error_context | |
3563 | (cl, "Inconsistent member declaration. At most one of `public', " | |
3564 | "`private', or `protected' may be specified"); | |
3565 | } | |
3566 | ||
3567 | /* Check the methode header METH for abstract specifics features */ | |
3568 | ||
3569 | static void | |
3570 | check_abstract_method_header (meth) | |
3571 | tree meth; | |
3572 | { | |
3573 | int flags = get_access_flags_from_decl (meth); | |
3574 | /* DECL_NAME might still be a WFL node */ | |
c877974e | 3575 | tree name = GET_METHOD_NAME (meth); |
e04a16fb AG |
3576 | |
3577 | OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (ABSTRACT_TK), flags, | |
3578 | ACC_ABSTRACT, "abstract method `%s'", | |
3579 | IDENTIFIER_POINTER (name)); | |
3580 | OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (PUBLIC_TK), flags, | |
3581 | ACC_PUBLIC, "abstract method `%s'", | |
3582 | IDENTIFIER_POINTER (name)); | |
3583 | ||
3584 | check_modifiers ("Illegal modifier `%s' for interface method", | |
3585 | flags, INTERFACE_METHOD_MODIFIERS); | |
3586 | } | |
3587 | ||
3588 | /* Create a FUNCTION_TYPE node and start augmenting it with the | |
3589 | declared function arguments. Arguments type that can't be resolved | |
3590 | are left as they are, but the returned node is marked as containing | |
3591 | incomplete types. */ | |
3592 | ||
3593 | static tree | |
3594 | method_declarator (id, list) | |
3595 | tree id, list; | |
3596 | { | |
3597 | tree arg_types = NULL_TREE, current, node; | |
3598 | tree meth = make_node (FUNCTION_TYPE); | |
3599 | jdep *jdep; | |
e04a16fb AG |
3600 | |
3601 | patch_stage = JDEP_NO_PATCH; | |
3602 | ||
3603 | for (current = list; current; current = TREE_CHAIN (current)) | |
3604 | { | |
c583dd46 | 3605 | int must_chain = 0; |
e04a16fb AG |
3606 | tree wfl_name = TREE_PURPOSE (current); |
3607 | tree type = TREE_VALUE (current); | |
3608 | tree name = EXPR_WFL_NODE (wfl_name); | |
c583dd46 APB |
3609 | tree already, arg_node; |
3610 | tree type_wfl = NULL_TREE; | |
23a79c61 | 3611 | tree real_type; |
c583dd46 APB |
3612 | |
3613 | /* Obtain a suitable type for resolution, if necessary */ | |
3614 | SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain); | |
3615 | ||
3616 | /* Process NAME, as it may specify extra dimension(s) for it */ | |
3617 | type = build_array_from_name (type, type_wfl, name, &name); | |
3618 | EXPR_WFL_NODE (wfl_name) = name; | |
e04a16fb | 3619 | |
23a79c61 APB |
3620 | real_type = GET_REAL_TYPE (type); |
3621 | if (TREE_CODE (real_type) == RECORD_TYPE) | |
3622 | { | |
3623 | real_type = promote_type (real_type); | |
3624 | if (TREE_CODE (type) == TREE_LIST) | |
3625 | TREE_PURPOSE (type) = real_type; | |
3626 | } | |
5e942c50 | 3627 | |
e04a16fb AG |
3628 | /* Check redefinition */ |
3629 | for (already = arg_types; already; already = TREE_CHAIN (already)) | |
3630 | if (TREE_PURPOSE (already) == name) | |
3631 | { | |
3632 | parse_error_context | |
3633 | (wfl_name, "Variable `%s' is used more than once in the " | |
3634 | "argument list of method `%s'", IDENTIFIER_POINTER (name), | |
3635 | IDENTIFIER_POINTER (EXPR_WFL_NODE (id))); | |
3636 | break; | |
3637 | } | |
3638 | ||
3639 | /* If we've an incomplete argument type, we know there is a location | |
3640 | to patch when the type get resolved, later. */ | |
3641 | jdep = NULL; | |
c583dd46 | 3642 | if (must_chain) |
e04a16fb | 3643 | { |
c583dd46 APB |
3644 | patch_stage = JDEP_METHOD; |
3645 | type = register_incomplete_type (patch_stage, | |
3646 | type_wfl, wfl_name, type); | |
3647 | jdep = CLASSD_LAST (ctxp->classd_list); | |
3648 | JDEP_MISC (jdep) = id; | |
e04a16fb | 3649 | } |
c583dd46 | 3650 | |
e04a16fb | 3651 | /* The argument node: a name and a (possibly) incomplete type */ |
23a79c61 | 3652 | arg_node = build_tree_list (name, real_type); |
e04a16fb AG |
3653 | if (jdep) |
3654 | JDEP_GET_PATCH (jdep) = &TREE_VALUE (arg_node); | |
3655 | TREE_CHAIN (arg_node) = arg_types; | |
3656 | arg_types = arg_node; | |
3657 | } | |
de4c7b02 | 3658 | TYPE_ARG_TYPES (meth) = chainon (nreverse (arg_types), end_params_node); |
e04a16fb AG |
3659 | node = build_tree_list (id, meth); |
3660 | return node; | |
3661 | } | |
3662 | ||
3663 | static int | |
3664 | unresolved_type_p (wfl, returned) | |
3665 | tree wfl; | |
3666 | tree *returned; | |
3667 | ||
3668 | { | |
3669 | if (TREE_CODE (wfl) == EXPR_WITH_FILE_LOCATION) | |
3670 | { | |
3671 | tree decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (wfl)); | |
3672 | if (returned) | |
3673 | *returned = (decl ? TREE_TYPE (decl) : NULL_TREE); | |
3674 | return 1; | |
3675 | } | |
3676 | if (returned) | |
3677 | *returned = wfl; | |
3678 | return 0; | |
3679 | } | |
3680 | ||
3681 | /* From NAME, build a qualified identifier node using the | |
3682 | qualification from the current package definition. */ | |
3683 | ||
3684 | static tree | |
3685 | parser_qualified_classname (name) | |
3686 | tree name; | |
3687 | { | |
3688 | if (ctxp->package) | |
3689 | return merge_qualified_name (ctxp->package, EXPR_WFL_NODE (name)); | |
3690 | else | |
3691 | return EXPR_WFL_NODE (name); | |
3692 | } | |
3693 | ||
3694 | /* Called once the type a interface extends is resolved. Returns 0 if | |
3695 | everything is OK. */ | |
3696 | ||
3697 | static int | |
3698 | parser_check_super_interface (super_decl, this_decl, this_wfl) | |
3699 | tree super_decl, this_decl, this_wfl; | |
3700 | { | |
3701 | tree super_type = TREE_TYPE (super_decl); | |
3702 | ||
3703 | /* Has to be an interface */ | |
3704 | if (!CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (super_decl)))) | |
3705 | { | |
3706 | parse_error_context | |
3707 | (this_wfl, "Can't use %s `%s' to implement/extend %s `%s'", | |
3708 | (TYPE_ARRAY_P (super_type) ? "array" : "class"), | |
3709 | IDENTIFIER_POINTER (DECL_NAME (super_decl)), | |
3710 | (CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (this_decl))) ? | |
3711 | "interface" : "class"), | |
3712 | IDENTIFIER_POINTER (DECL_NAME (this_decl))); | |
3713 | return 1; | |
3714 | } | |
3715 | ||
3716 | /* Check scope: same package OK, other package: OK if public */ | |
3717 | if (check_pkg_class_access (DECL_NAME (super_decl), lookup_cl (this_decl))) | |
3718 | return 1; | |
3719 | ||
3720 | SOURCE_FRONTEND_DEBUG (("Completing interface %s with %s", | |
3721 | IDENTIFIER_POINTER (DECL_NAME (this_decl)), | |
3722 | IDENTIFIER_POINTER (DECL_NAME (super_decl)))); | |
3723 | return 0; | |
3724 | } | |
3725 | ||
3726 | /* Makes sure that SUPER_DECL is suitable to extend THIS_DECL. Returns | |
3727 | 0 if everthing is OK. */ | |
3728 | ||
3729 | static int | |
3730 | parser_check_super (super_decl, this_decl, wfl) | |
3731 | tree super_decl, this_decl, wfl; | |
3732 | { | |
e04a16fb AG |
3733 | tree super_type = TREE_TYPE (super_decl); |
3734 | ||
3735 | /* SUPER should be a CLASS (neither an array nor an interface) */ | |
3736 | if (TYPE_ARRAY_P (super_type) || CLASS_INTERFACE (TYPE_NAME (super_type))) | |
3737 | { | |
3738 | parse_error_context | |
3739 | (wfl, "Class `%s' can't subclass %s `%s'", | |
3740 | IDENTIFIER_POINTER (DECL_NAME (this_decl)), | |
3741 | (CLASS_INTERFACE (TYPE_NAME (super_type)) ? "interface" : "array"), | |
3742 | IDENTIFIER_POINTER (DECL_NAME (super_decl))); | |
3743 | return 1; | |
3744 | } | |
3745 | ||
3746 | if (CLASS_FINAL (TYPE_NAME (super_type))) | |
3747 | { | |
3748 | parse_error_context (wfl, "Can't subclass final classes: %s", | |
3749 | IDENTIFIER_POINTER (DECL_NAME (super_decl))); | |
3750 | return 1; | |
3751 | } | |
3752 | ||
3753 | /* Check scope: same package OK, other package: OK if public */ | |
3754 | if (check_pkg_class_access (DECL_NAME (super_decl), wfl)) | |
3755 | return 1; | |
3756 | ||
3757 | SOURCE_FRONTEND_DEBUG (("Completing class %s with %s", | |
3758 | IDENTIFIER_POINTER (DECL_NAME (this_decl)), | |
3759 | IDENTIFIER_POINTER (DECL_NAME (super_decl)))); | |
3760 | return 0; | |
3761 | } | |
3762 | ||
3763 | /* Create a new dependency list and link it (in a LIFO manner) to the | |
3764 | CTXP list of type dependency list. */ | |
3765 | ||
3766 | static void | |
3767 | create_jdep_list (ctxp) | |
3768 | struct parser_ctxt *ctxp; | |
3769 | { | |
23a79c61 | 3770 | jdeplist *new = (jdeplist *)xmalloc (sizeof (jdeplist)); |
e04a16fb AG |
3771 | new->first = new->last = NULL; |
3772 | new->next = ctxp->classd_list; | |
3773 | ctxp->classd_list = new; | |
3774 | } | |
3775 | ||
3776 | static jdeplist * | |
3777 | reverse_jdep_list (ctxp) | |
3778 | struct parser_ctxt *ctxp; | |
3779 | { | |
3780 | register jdeplist *prev = NULL, *current, *next; | |
3781 | for (current = ctxp->classd_list; current; current = next) | |
3782 | { | |
3783 | next = current->next; | |
3784 | current->next = prev; | |
3785 | prev = current; | |
3786 | } | |
3787 | return prev; | |
3788 | } | |
3789 | ||
23a79c61 APB |
3790 | /* Create a fake pointer based on the ID stored in |
3791 | TYPE_NAME. TYPE_NAME can be a WFL or a incomplete type asking to be | |
3792 | registered again. */ | |
e04a16fb AG |
3793 | |
3794 | static tree | |
23a79c61 APB |
3795 | obtain_incomplete_type (type_name) |
3796 | tree type_name; | |
e04a16fb | 3797 | { |
23a79c61 APB |
3798 | tree ptr, name; |
3799 | ||
3800 | if (TREE_CODE (type_name) == EXPR_WITH_FILE_LOCATION) | |
3801 | name = EXPR_WFL_NODE (type_name); | |
3802 | else if (INCOMPLETE_TYPE_P (type_name)) | |
3803 | name = TYPE_NAME (type_name); | |
3804 | else | |
3805 | fatal ("invalid type name - obtain_incomplete_type"); | |
e04a16fb AG |
3806 | |
3807 | for (ptr = ctxp->incomplete_class; ptr; ptr = TREE_CHAIN (ptr)) | |
78d21f92 | 3808 | if (TYPE_NAME (ptr) == name) |
e04a16fb AG |
3809 | break; |
3810 | ||
3811 | if (!ptr) | |
3812 | { | |
e04a16fb | 3813 | push_obstacks (&permanent_obstack, &permanent_obstack); |
78d21f92 PB |
3814 | BUILD_PTR_FROM_NAME (ptr, name); |
3815 | layout_type (ptr); | |
e04a16fb AG |
3816 | pop_obstacks (); |
3817 | TREE_CHAIN (ptr) = ctxp->incomplete_class; | |
3818 | ctxp->incomplete_class = ptr; | |
3819 | } | |
3820 | ||
3821 | return ptr; | |
3822 | } | |
3823 | ||
3824 | /* Register a incomplete type whose name is WFL. Reuse PTR if PTR is | |
3825 | non NULL instead of computing a new fake type based on WFL. The new | |
3826 | dependency is inserted in the current type dependency list, in FIFO | |
3827 | manner. */ | |
3828 | ||
3829 | static tree | |
3830 | register_incomplete_type (kind, wfl, decl, ptr) | |
3831 | int kind; | |
3832 | tree wfl, decl, ptr; | |
3833 | { | |
23a79c61 | 3834 | jdep *new = (jdep *)xmalloc (sizeof (jdep)); |
e04a16fb | 3835 | |
e04a16fb AG |
3836 | if (!ptr && kind != JDEP_METHOD_END) /* JDEP_METHOD_END is a mere marker */ |
3837 | ptr = obtain_incomplete_type (wfl); | |
3838 | ||
3839 | JDEP_KIND (new) = kind; | |
3840 | JDEP_DECL (new) = decl; | |
3841 | JDEP_SOLV (new) = ptr; | |
3842 | JDEP_WFL (new) = wfl; | |
3843 | JDEP_CHAIN (new) = NULL; | |
3844 | JDEP_MISC (new) = NULL_TREE; | |
3845 | JDEP_GET_PATCH (new) = (tree *)NULL; | |
3846 | ||
3847 | JDEP_INSERT (ctxp->classd_list, new); | |
3848 | ||
3849 | return ptr; | |
3850 | } | |
3851 | ||
3852 | void | |
3853 | java_check_circular_reference () | |
3854 | { | |
3855 | tree current; | |
3856 | for (current = ctxp->class_list; current; current = TREE_CHAIN (current)) | |
3857 | { | |
3858 | tree type = TREE_TYPE (current); | |
3859 | if (CLASS_INTERFACE (TYPE_NAME (type))) | |
3860 | { | |
3861 | /* Check all interfaces this class extends */ | |
3862 | tree basetype_vec = TYPE_BINFO_BASETYPES (type); | |
3863 | int n, i; | |
3864 | ||
3865 | if (!basetype_vec) | |
3866 | return; | |
3867 | n = TREE_VEC_LENGTH (basetype_vec); | |
3868 | for (i = 0; i < n; i++) | |
3869 | { | |
3870 | tree vec_elt = TREE_VEC_ELT (basetype_vec, i); | |
3871 | if (vec_elt && BINFO_TYPE (vec_elt) != object_type_node | |
3872 | && interface_of_p (type, BINFO_TYPE (vec_elt))) | |
3873 | parse_error_context (lookup_cl (current), | |
3874 | "Cyclic interface inheritance"); | |
3875 | } | |
3876 | } | |
3877 | else | |
3878 | if (inherits_from_p (CLASSTYPE_SUPER (type), type)) | |
3879 | parse_error_context (lookup_cl (current), | |
3880 | "Cyclic class inheritance"); | |
3881 | } | |
3882 | } | |
3883 | ||
23a79c61 APB |
3884 | /* safe_layout_class just makes sure that we can load a class without |
3885 | disrupting the current_class, input_file, lineno, etc, information | |
3886 | about the class processed currently. */ | |
3887 | ||
e04a16fb AG |
3888 | void |
3889 | safe_layout_class (class) | |
3890 | tree class; | |
3891 | { | |
3892 | tree save_current_class = current_class; | |
3893 | char *save_input_filename = input_filename; | |
3894 | int save_lineno = lineno; | |
5e942c50 | 3895 | |
e04a16fb | 3896 | push_obstacks (&permanent_obstack, &permanent_obstack); |
5e942c50 | 3897 | |
e04a16fb AG |
3898 | layout_class (class); |
3899 | pop_obstacks (); | |
5e942c50 | 3900 | |
e04a16fb AG |
3901 | current_class = save_current_class; |
3902 | input_filename = save_input_filename; | |
3903 | lineno = save_lineno; | |
3904 | CLASS_LOADED_P (class) = 1; | |
3905 | } | |
3906 | ||
3907 | static tree | |
3908 | jdep_resolve_class (dep) | |
3909 | jdep *dep; | |
3910 | { | |
3911 | tree decl; | |
3912 | ||
23a79c61 APB |
3913 | if (JDEP_RESOLVED_P (dep)) |
3914 | decl = JDEP_RESOLVED_DECL (dep); | |
3915 | else | |
e04a16fb | 3916 | { |
23a79c61 APB |
3917 | decl = resolve_class (JDEP_TO_RESOLVE (dep), |
3918 | JDEP_DECL (dep), JDEP_WFL (dep)); | |
e04a16fb AG |
3919 | JDEP_RESOLVED (dep, decl); |
3920 | } | |
23a79c61 | 3921 | |
e04a16fb | 3922 | if (!decl) |
23a79c61 APB |
3923 | complete_class_report_errors (dep); |
3924 | ||
e04a16fb AG |
3925 | return decl; |
3926 | } | |
3927 | ||
3928 | /* Complete unsatisfied class declaration and their dependencies */ | |
3929 | ||
3930 | void | |
3931 | java_complete_class () | |
3932 | { | |
e04a16fb AG |
3933 | tree cclass; |
3934 | jdeplist *cclassd; | |
3935 | int error_found; | |
b67d701b | 3936 | tree type; |
e04a16fb AG |
3937 | |
3938 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
3939 | ||
3940 | /* Process imports and reverse the import on demand list */ | |
3941 | process_imports (); | |
3942 | if (ctxp->import_demand_list) | |
3943 | ctxp->import_demand_list = nreverse (ctxp->import_demand_list); | |
3944 | ||
3945 | /* Rever things so we have the right order */ | |
3946 | ctxp->class_list = nreverse (ctxp->class_list); | |
3947 | ctxp->classd_list = reverse_jdep_list (ctxp); | |
c877974e | 3948 | |
e04a16fb AG |
3949 | for (cclassd = ctxp->classd_list, cclass = ctxp->class_list; |
3950 | cclass && cclassd; | |
3951 | cclass = TREE_CHAIN (cclass), cclassd = CLASSD_CHAIN (cclassd)) | |
3952 | { | |
3953 | jdep *dep; | |
3954 | for (dep = CLASSD_FIRST (cclassd); dep; dep = JDEP_CHAIN (dep)) | |
3955 | { | |
3956 | tree decl; | |
e04a16fb AG |
3957 | if (!(decl = jdep_resolve_class (dep))) |
3958 | continue; | |
3959 | ||
3960 | /* Now it's time to patch */ | |
3961 | switch (JDEP_KIND (dep)) | |
3962 | { | |
3963 | case JDEP_SUPER: | |
3964 | /* Simply patch super */ | |
3965 | if (parser_check_super (decl, JDEP_DECL (dep), JDEP_WFL (dep))) | |
3966 | continue; | |
3967 | BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO | |
3968 | (TREE_TYPE (JDEP_DECL (dep)))), 0)) = TREE_TYPE (decl); | |
3969 | break; | |
3970 | ||
3971 | case JDEP_FIELD: | |
3972 | { | |
3973 | /* We do part of the job done in add_field */ | |
3974 | tree field_decl = JDEP_DECL (dep); | |
3975 | tree field_type = TREE_TYPE (decl); | |
3976 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
e04a16fb | 3977 | if (TREE_CODE (field_type) == RECORD_TYPE) |
e04a16fb AG |
3978 | field_type = promote_type (field_type); |
3979 | pop_obstacks (); | |
3980 | TREE_TYPE (field_decl) = field_type; | |
5e942c50 APB |
3981 | DECL_ALIGN (field_decl) = 0; |
3982 | layout_decl (field_decl, 0); | |
e04a16fb AG |
3983 | SOURCE_FRONTEND_DEBUG |
3984 | (("Completed field/var decl `%s' with `%s'", | |
3985 | IDENTIFIER_POINTER (DECL_NAME (field_decl)), | |
3986 | IDENTIFIER_POINTER (DECL_NAME (decl)))); | |
3987 | break; | |
3988 | } | |
3989 | case JDEP_METHOD: /* We start patching a method */ | |
3990 | case JDEP_METHOD_RETURN: | |
3991 | error_found = 0; | |
3992 | while (1) | |
3993 | { | |
3994 | if (decl) | |
3995 | { | |
b67d701b PB |
3996 | type = TREE_TYPE(decl); |
3997 | if (TREE_CODE (type) == RECORD_TYPE) | |
3998 | type = promote_type (type); | |
e04a16fb AG |
3999 | JDEP_APPLY_PATCH (dep, type); |
4000 | SOURCE_FRONTEND_DEBUG | |
4001 | (((JDEP_KIND (dep) == JDEP_METHOD_RETURN ? | |
4002 | "Completing fct `%s' with ret type `%s'": | |
4003 | "Completing arg `%s' with type `%s'"), | |
4004 | IDENTIFIER_POINTER (EXPR_WFL_NODE | |
4005 | (JDEP_DECL_WFL (dep))), | |
4006 | IDENTIFIER_POINTER (DECL_NAME (decl)))); | |
4007 | } | |
4008 | else | |
4009 | error_found = 1; | |
4010 | dep = JDEP_CHAIN (dep); | |
4011 | if (JDEP_KIND (dep) == JDEP_METHOD_END) | |
4012 | break; | |
4013 | else | |
4014 | decl = jdep_resolve_class (dep); | |
4015 | } | |
4016 | if (!error_found) | |
4017 | { | |
4018 | tree mdecl = JDEP_DECL (dep), signature; | |
4019 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
4020 | /* Recompute and reset the signature */ | |
4021 | signature = build_java_signature (TREE_TYPE (mdecl)); | |
4022 | set_java_signature (TREE_TYPE (mdecl), signature); | |
4023 | pop_obstacks (); | |
4024 | } | |
4025 | else | |
4026 | continue; | |
4027 | break; | |
4028 | ||
4029 | case JDEP_INTERFACE: | |
4030 | if (parser_check_super_interface (decl, JDEP_DECL (dep), | |
4031 | JDEP_WFL (dep))) | |
4032 | continue; | |
4033 | parser_add_interface (JDEP_DECL (dep), decl, JDEP_WFL (dep)); | |
4034 | break; | |
4035 | ||
b67d701b | 4036 | case JDEP_PARM: |
e04a16fb | 4037 | case JDEP_VARIABLE: |
b67d701b PB |
4038 | type = TREE_TYPE(decl); |
4039 | if (TREE_CODE (type) == RECORD_TYPE) | |
4040 | type = promote_type (type); | |
4041 | JDEP_APPLY_PATCH (dep, type); | |
e04a16fb AG |
4042 | break; |
4043 | ||
4044 | case JDEP_TYPE: | |
4045 | JDEP_APPLY_PATCH (dep, TREE_TYPE (decl)); | |
4046 | SOURCE_FRONTEND_DEBUG | |
4047 | (("Completing a random type dependency on a '%s' node", | |
4048 | tree_code_name [TREE_CODE (JDEP_DECL (dep))])); | |
4049 | break; | |
4050 | ||
b9f7e36c | 4051 | case JDEP_EXCEPTION: |
c877974e APB |
4052 | JDEP_APPLY_PATCH (dep, TREE_TYPE (decl)); |
4053 | SOURCE_FRONTEND_DEBUG | |
4054 | (("Completing `%s' `throws' argument node", | |
4055 | IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))))); | |
b9f7e36c APB |
4056 | break; |
4057 | ||
e04a16fb | 4058 | default: |
0a2138e2 APB |
4059 | fatal ("Can't handle patch code %d - java_complete_class", |
4060 | JDEP_KIND (dep)); | |
e04a16fb AG |
4061 | } |
4062 | } | |
4063 | } | |
4064 | pop_obstacks (); | |
4065 | return; | |
4066 | } | |
4067 | ||
4068 | /* Resolve class CLASS_TYPE. Handle the case of trying to resolve an | |
4069 | array. */ | |
4070 | ||
4071 | static tree | |
4072 | resolve_class (class_type, decl, cl) | |
4073 | tree class_type, decl, cl; | |
4074 | { | |
4075 | char *name = IDENTIFIER_POINTER (TYPE_NAME (class_type)); | |
4076 | char *base = name; | |
78d21f92 PB |
4077 | tree resolved_type = TREE_TYPE (class_type); |
4078 | tree resolved_type_decl; | |
e04a16fb | 4079 | |
78d21f92 PB |
4080 | if (resolved_type != NULL_TREE) |
4081 | { | |
4082 | tree resolved_type_decl = TYPE_NAME (resolved_type); | |
4083 | if (resolved_type_decl == NULL_TREE | |
4084 | || TREE_CODE (resolved_type_decl) == IDENTIFIER_NODE) | |
4085 | { | |
4086 | resolved_type_decl = build_decl (TYPE_DECL, | |
4087 | TYPE_NAME (class_type), | |
4088 | resolved_type); | |
4089 | } | |
4090 | return resolved_type_decl; | |
4091 | } | |
4092 | ||
e04a16fb AG |
4093 | /* 1- Check to see if we have an array. If true, find what we really |
4094 | want to resolve */ | |
4095 | while (name[0] == '[') | |
4096 | name++; | |
4097 | if (base != name) | |
4098 | TYPE_NAME (class_type) = get_identifier (name); | |
4099 | ||
4100 | /* 2- Resolve the bare type */ | |
4101 | if (!(resolved_type_decl = do_resolve_class (class_type, decl, cl))) | |
4102 | return NULL_TREE; | |
4103 | resolved_type = TREE_TYPE (resolved_type_decl); | |
4104 | ||
4105 | /* 3- If we have and array, reconstruct the array down to its nesting */ | |
4106 | if (base != name) | |
4107 | { | |
4108 | while (base != name) | |
4109 | { | |
4110 | if (TREE_CODE (resolved_type) == RECORD_TYPE) | |
4111 | resolved_type = promote_type (resolved_type); | |
4112 | resolved_type = build_java_array_type (resolved_type, -1); | |
c583dd46 | 4113 | CLASS_LOADED_P (resolved_type) = 1; |
e04a16fb AG |
4114 | name--; |
4115 | } | |
4116 | /* Build a fake decl for this, since this is what is expected to | |
4117 | be returned. */ | |
4118 | resolved_type_decl = | |
4119 | build_decl (TYPE_DECL, TYPE_NAME (resolved_type), resolved_type); | |
4120 | /* Figure how those two things are important for error report. FIXME */ | |
4121 | DECL_SOURCE_LINE (resolved_type_decl) = 0; | |
4122 | DECL_SOURCE_FILE (resolved_type_decl) = input_filename; | |
78d21f92 | 4123 | TYPE_NAME (class_type) = TYPE_NAME (resolved_type); |
e04a16fb | 4124 | } |
78d21f92 | 4125 | TREE_TYPE (class_type) = resolved_type; |
e04a16fb AG |
4126 | return resolved_type_decl; |
4127 | } | |
4128 | ||
4129 | /* Effectively perform the resolution of class CLASS_TYPE. DECL or CL | |
4130 | are used to report error messages. */ | |
4131 | ||
78d21f92 | 4132 | tree |
e04a16fb AG |
4133 | do_resolve_class (class_type, decl, cl) |
4134 | tree class_type; | |
4135 | tree decl; | |
4136 | tree cl; | |
4137 | { | |
4138 | tree new_class_decl; | |
4139 | tree original_name = NULL_TREE; | |
4140 | ||
4141 | /* Do not try to replace TYPE_NAME (class_type) by a variable, since | |
4142 | its is changed by find_in_imports{_on_demand} */ | |
4143 | ||
4144 | /* 1- Check for the type in single imports */ | |
4145 | if (find_in_imports (class_type)) | |
4146 | return NULL_TREE; | |
4147 | ||
4148 | /* 2- And check for the type in the current compilation unit. If it fails, | |
4149 | try with a name qualified with the package name if appropriate. */ | |
e04a16fb AG |
4150 | if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)))) |
4151 | { | |
4152 | if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) && | |
4153 | !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl))) | |
4154 | load_class (TYPE_NAME (class_type), 0); | |
4155 | return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)); | |
4156 | } | |
4157 | ||
4158 | original_name = TYPE_NAME (class_type); | |
4159 | if (!QUALIFIED_P (TYPE_NAME (class_type)) && ctxp->package) | |
4160 | TYPE_NAME (class_type) = merge_qualified_name (ctxp->package, | |
4161 | TYPE_NAME (class_type)); | |
bc3ca41b | 4162 | #if 1 |
5e942c50 APB |
4163 | if (!(new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)))) |
4164 | load_class (TYPE_NAME (class_type), 0); | |
e04a16fb AG |
4165 | if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)))) |
4166 | { | |
4167 | if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) && | |
4168 | !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl))) | |
4169 | load_class (TYPE_NAME (class_type), 0); | |
4170 | return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)); | |
4171 | } | |
bc3ca41b PB |
4172 | #else |
4173 | new_name = TYPE_NAME (class_type); | |
4174 | if ((new_class_decl = IDENTIFIER_CLASS_VALUE (new_name)) != NULL_TREE) | |
4175 | { | |
4176 | if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) && | |
4177 | !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl))) | |
4178 | load_class (new_name, 0); | |
4179 | return IDENTIFIER_CLASS_VALUE (new_name); | |
4180 | } | |
4181 | else | |
4182 | { | |
4183 | tree class = read_class (new_name); | |
4184 | if (class != NULL_TREE) | |
4185 | { | |
4186 | tree decl = IDENTIFIER_CLASS_VALUE (new_name); | |
4187 | if (decl == NULL_TREE) | |
4188 | decl = push_class (class, new_name); | |
4189 | return decl; | |
4190 | } | |
4191 | } | |
4192 | #endif | |
e04a16fb AG |
4193 | TYPE_NAME (class_type) = original_name; |
4194 | ||
4195 | /* 3- Check an other compilation unit that bears the name of type */ | |
4196 | load_class (TYPE_NAME (class_type), 0); | |
4197 | if (check_pkg_class_access (TYPE_NAME (class_type), | |
4198 | (cl ? cl : lookup_cl (decl)))) | |
4199 | return NULL_TREE; | |
4200 | ||
4201 | if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)))) | |
4202 | return new_class_decl; | |
4203 | ||
4204 | /* 4- Check the import on demands. Don't allow bar.baz to be | |
4205 | imported from foo.* */ | |
4206 | if (!QUALIFIED_P (TYPE_NAME (class_type))) | |
4207 | if (find_in_imports_on_demand (class_type)) | |
4208 | return NULL_TREE; | |
4209 | ||
4210 | /* 5- Last call for a resolution */ | |
4211 | return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)); | |
4212 | } | |
4213 | ||
4214 | /* Resolve NAME and lay it out (if not done and if not the current | |
23a79c61 APB |
4215 | parsed class). Return a decl node. This function is meant to be |
4216 | called when type resolution is necessary during the walk pass. */ | |
e04a16fb AG |
4217 | |
4218 | static tree | |
c877974e APB |
4219 | resolve_and_layout (something, cl) |
4220 | tree something; | |
e04a16fb AG |
4221 | tree cl; |
4222 | { | |
c877974e APB |
4223 | tree decl; |
4224 | ||
23a79c61 APB |
4225 | /* Don't do that on the current class */ |
4226 | if (something == current_class) | |
4227 | return TYPE_NAME (current_class); | |
c877974e | 4228 | |
23a79c61 | 4229 | /* Don't do anything for void and other primitive types */ |
c877974e APB |
4230 | if (JPRIMITIVE_TYPE_P (something) || something == void_type_node) |
4231 | return NULL_TREE; | |
4232 | ||
23a79c61 APB |
4233 | /* Pointer types can be reall pointer types or fake pointers. When |
4234 | finding a real pointer, recheck for primitive types */ | |
4235 | if (TREE_CODE (something) == POINTER_TYPE) | |
4236 | { | |
4237 | if (TREE_TYPE (something)) | |
4238 | { | |
4239 | something = TREE_TYPE (something); | |
4240 | if (JPRIMITIVE_TYPE_P (something) || something == void_type_node) | |
4241 | return NULL_TREE; | |
4242 | } | |
4243 | else | |
4244 | something = TYPE_NAME (something); | |
4245 | } | |
4246 | ||
4247 | /* Don't do anything for arrays of primitive types */ | |
4248 | if (TREE_CODE (something) == RECORD_TYPE && TYPE_ARRAY_P (something) | |
4249 | && JPRIMITIVE_TYPE_P (TYPE_ARRAY_ELEMENT (something))) | |
4250 | return NULL_TREE; | |
4251 | ||
4252 | /* If something is not and IDENTIFIER_NODE, it can be a a TYPE_DECL | |
4253 | or a real TYPE */ | |
c877974e APB |
4254 | if (TREE_CODE (something) != IDENTIFIER_NODE) |
4255 | something = (TREE_CODE (TYPE_NAME (something)) == TYPE_DECL ? | |
4256 | DECL_NAME (TYPE_NAME (something)) : TYPE_NAME (something)); | |
4257 | ||
23a79c61 APB |
4258 | if (!(decl = resolve_no_layout (something, cl))) |
4259 | return NULL_TREE; | |
4260 | ||
4261 | /* Resolve and layout if necessary */ | |
4262 | layout_class_methods (TREE_TYPE (decl)); | |
4263 | if (CLASS_FROM_SOURCE_P (TREE_TYPE (decl))) | |
4264 | CHECK_METHODS (decl); | |
4265 | if (TREE_TYPE (decl) != current_class && !CLASS_LOADED_P (TREE_TYPE (decl))) | |
e04a16fb | 4266 | safe_layout_class (TREE_TYPE (decl)); |
23a79c61 | 4267 | |
e04a16fb AG |
4268 | return decl; |
4269 | } | |
4270 | ||
4271 | /* Resolve a class, returns its decl but doesn't perform any | |
4272 | layout. The current parsing context is saved and restored */ | |
4273 | ||
4274 | static tree | |
4275 | resolve_no_layout (name, cl) | |
4276 | tree name, cl; | |
4277 | { | |
4278 | tree ptr, decl; | |
4279 | BUILD_PTR_FROM_NAME (ptr, name); | |
4280 | java_parser_context_save_global (); | |
4281 | decl = resolve_class (ptr, NULL_TREE, cl); | |
4282 | java_parser_context_restore_global (); | |
4283 | ||
4284 | return decl; | |
4285 | } | |
4286 | ||
23a79c61 APB |
4287 | /* Called when reporting errors. Skip leader '[' in a complex array |
4288 | type description that failed to be resolved. */ | |
e04a16fb AG |
4289 | |
4290 | static char * | |
4291 | purify_type_name (name) | |
4292 | char *name; | |
4293 | { | |
4294 | while (*name && *name == '[') | |
4295 | name++; | |
4296 | return name; | |
4297 | } | |
4298 | ||
4299 | /* The type CURRENT refers to can't be found. We print error messages. */ | |
4300 | ||
4301 | static void | |
4302 | complete_class_report_errors (dep) | |
4303 | jdep *dep; | |
4304 | { | |
23a79c61 APB |
4305 | char *name; |
4306 | ||
4307 | if (!JDEP_WFL (dep)) | |
4308 | return; | |
4309 | ||
4310 | name = IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))); | |
e04a16fb AG |
4311 | switch (JDEP_KIND (dep)) |
4312 | { | |
4313 | case JDEP_SUPER: | |
4314 | parse_error_context | |
4315 | (JDEP_WFL (dep), "Superclass `%s' of class `%s' not found", | |
23a79c61 | 4316 | purify_type_name (name), |
e04a16fb AG |
4317 | IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep)))); |
4318 | break; | |
4319 | case JDEP_FIELD: | |
4320 | parse_error_context | |
4321 | (JDEP_WFL (dep), "Type `%s' not found in declaration of field `%s'", | |
23a79c61 | 4322 | purify_type_name (name), |
e04a16fb AG |
4323 | IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep)))); |
4324 | break; | |
4325 | case JDEP_METHOD: /* Covers arguments */ | |
4326 | parse_error_context | |
4327 | (JDEP_WFL (dep), "Type `%s' not found in the declaration of the " | |
4328 | "argument `%s' of method `%s'", | |
23a79c61 | 4329 | purify_type_name (name), |
e04a16fb AG |
4330 | IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))), |
4331 | IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_MISC (dep)))); | |
4332 | break; | |
4333 | case JDEP_METHOD_RETURN: /* Covers return type */ | |
4334 | parse_error_context | |
4335 | (JDEP_WFL (dep), "Type `%s' not found in the declaration of the " | |
4336 | "return type of method `%s'", | |
23a79c61 | 4337 | purify_type_name (name), |
e04a16fb AG |
4338 | IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep)))); |
4339 | break; | |
4340 | case JDEP_INTERFACE: | |
4341 | parse_error_context | |
4342 | (JDEP_WFL (dep), "Superinterface `%s' of %s `%s' not found", | |
4343 | IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))), | |
4344 | (CLASS_OR_INTERFACE (JDEP_DECL (dep), "class", "interface")), | |
4345 | IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep)))); | |
4346 | break; | |
4347 | case JDEP_VARIABLE: | |
4348 | parse_error_context | |
4349 | (JDEP_WFL (dep), "Type `%s' not found in the declaration of the " | |
4350 | "local variable `%s'", | |
b67d701b PB |
4351 | purify_type_name (IDENTIFIER_POINTER |
4352 | (EXPR_WFL_NODE (JDEP_WFL (dep)))), | |
e04a16fb AG |
4353 | IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep)))); |
4354 | break; | |
b9f7e36c APB |
4355 | case JDEP_EXCEPTION: /* As specified by `throws' */ |
4356 | parse_error_context | |
4357 | (JDEP_WFL (dep), "Class `%s' not found in `throws'", | |
4358 | IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)))); | |
4359 | break; | |
0a2138e2 APB |
4360 | default: |
4361 | /* Fix for -Wall. Just break doing nothing. The error will be | |
4362 | caught later */ | |
4363 | break; | |
e04a16fb AG |
4364 | } |
4365 | } | |
4366 | ||
4367 | /* Check uninitialized final. */ | |
4368 | ||
4369 | void | |
4370 | java_check_final () | |
4371 | { | |
4372 | } | |
4373 | ||
22eed1e6 APB |
4374 | /* Return a static string containing the DECL prototype string. If |
4375 | DECL is a constructor, use the class name instead of the form | |
4376 | <init> */ | |
4377 | ||
4378 | static char * | |
4379 | get_printable_method_name (decl) | |
4380 | tree decl; | |
4381 | { | |
4382 | char *to_return; | |
4383 | tree name; | |
4384 | ||
4385 | if (DECL_CONSTRUCTOR_P (decl)) | |
4386 | { | |
4387 | name = DECL_NAME (decl); | |
5e942c50 | 4388 | DECL_NAME (decl) = DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl))); |
22eed1e6 APB |
4389 | } |
4390 | ||
4391 | to_return = lang_printable_name (decl, 0); | |
4392 | if (DECL_CONSTRUCTOR_P (decl)) | |
4393 | DECL_NAME (decl) = name; | |
4394 | ||
4395 | return to_return; | |
4396 | } | |
4397 | ||
5e942c50 APB |
4398 | /* Reinstall the proper DECL_NAME on METHOD. Return 0 if the method |
4399 | nevertheless needs to be verfied, 1 otherwise. */ | |
4400 | ||
4401 | static int | |
4402 | reset_method_name (method) | |
4403 | tree method; | |
4404 | { | |
4405 | if (DECL_NAME (method) != clinit_identifier_node | |
4406 | && DECL_NAME (method) != finit_identifier_node) | |
4407 | { | |
4408 | /* NAME is just the plain name when Object is being defined */ | |
4409 | if (DECL_CONTEXT (method) != object_type_node) | |
c877974e APB |
4410 | DECL_NAME (method) = (DECL_CONSTRUCTOR_P (method) ? |
4411 | init_identifier_node : GET_METHOD_NAME (method)); | |
5e942c50 APB |
4412 | return 0; |
4413 | } | |
4414 | else | |
4415 | return 1; | |
4416 | } | |
4417 | ||
c877974e APB |
4418 | /* Return the name of METHOD_DECL, when DECL_NAME is a WFL */ |
4419 | ||
4420 | tree | |
4421 | java_get_real_method_name (method_decl) | |
4422 | tree method_decl; | |
4423 | { | |
4424 | tree method_name = DECL_NAME (method_decl); | |
4425 | if (DECL_CONSTRUCTOR_P (method_decl)) | |
4426 | return init_identifier_node; | |
82371d41 APB |
4427 | |
4428 | /* Explain here why METHOD_DECL doesn't have the DECL_CONSTRUCTUR_P | |
4429 | and still can be a constructor. FIXME */ | |
4430 | ||
23a79c61 APB |
4431 | /* Don't confuse method only bearing the name of their class as |
4432 | constructors */ | |
82371d41 APB |
4433 | else if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (method_decl)) |
4434 | && ctxp | |
4435 | && ctxp->current_parsed_class_un == EXPR_WFL_NODE (method_name) | |
23a79c61 APB |
4436 | && get_access_flags_from_decl (method_decl) <= ACC_PROTECTED |
4437 | && TREE_TYPE (TREE_TYPE (method_decl)) == void_type_node) | |
c877974e APB |
4438 | return init_identifier_node; |
4439 | else | |
4440 | return EXPR_WFL_NODE (method_name); | |
4441 | } | |
4442 | ||
22eed1e6 APB |
4443 | /* Track method being redefined inside the same class. As a side |
4444 | effect, set DECL_NAME to an IDENTIFIER (prior entering this | |
4445 | function it's a FWL, so we can track errors more accurately */ | |
4446 | ||
e04a16fb AG |
4447 | static int |
4448 | check_method_redefinition (class, method) | |
4449 | tree class, method; | |
4450 | { | |
4451 | tree redef, name; | |
4452 | tree cl = DECL_NAME (method); | |
c3f2a476 | 4453 | tree sig = TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (method)); |
ba179f9f APB |
4454 | /* decl name of artificial <clinit> and $finit$ doesn't need to be |
4455 | fixed and checked */ | |
5e942c50 APB |
4456 | |
4457 | /* Reset the method name before running the check. If it returns 1, | |
4458 | the method doesn't need to be verified with respect to method | |
4459 | redeclaration and we return 0 */ | |
4460 | if (reset_method_name (method)) | |
e04a16fb | 4461 | return 0; |
5e942c50 APB |
4462 | |
4463 | name = DECL_NAME (method); | |
e04a16fb AG |
4464 | for (redef = TYPE_METHODS (class); redef; redef = TREE_CHAIN (redef)) |
4465 | { | |
c3f2a476 | 4466 | if (redef == method) |
e04a16fb | 4467 | break; |
c3f2a476 APB |
4468 | if (DECL_NAME (redef) == name |
4469 | && sig == TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (redef))) | |
e04a16fb | 4470 | { |
22eed1e6 APB |
4471 | parse_error_context |
4472 | (cl, "Duplicate %s declaration `%s'", | |
4473 | (DECL_CONSTRUCTOR_P (redef) ? "constructor" : "method"), | |
4474 | get_printable_method_name (redef)); | |
e04a16fb AG |
4475 | return 1; |
4476 | } | |
4477 | } | |
4478 | return 0; | |
4479 | } | |
4480 | ||
4481 | /* Check all the methods of CLASS. Methods are first completed then | |
4482 | checked according to regular method existance rules. | |
4483 | If no constructor were encountered, then build its declaration. */ | |
4484 | ||
4485 | static void | |
4486 | java_check_regular_methods (class_decl) | |
4487 | tree class_decl; | |
4488 | { | |
5e942c50 | 4489 | int saw_constructor = 0; |
e04a16fb AG |
4490 | tree method; |
4491 | tree class = CLASS_TO_HANDLE_TYPE (TREE_TYPE (class_decl)); | |
4492 | tree super_class = CLASSTYPE_SUPER (class); | |
5e942c50 | 4493 | tree saved_found_wfl = NULL_TREE, found = NULL_TREE; |
c877974e APB |
4494 | tree mthrows; |
4495 | ||
4496 | /* It is not necessary to check methods defined in java.lang.Object */ | |
4497 | if (class == object_type_node) | |
4498 | return; | |
e04a16fb | 4499 | |
23a79c61 APB |
4500 | if (!TYPE_NVIRTUALS (class)) |
4501 | TYPE_METHODS (class) = nreverse (TYPE_METHODS (class)); | |
e04a16fb AG |
4502 | |
4503 | /* Should take interfaces into account. FIXME */ | |
4504 | for (method = TYPE_METHODS (class); method; method = TREE_CHAIN (method)) | |
4505 | { | |
5e942c50 | 4506 | tree sig; |
e04a16fb AG |
4507 | tree method_wfl = DECL_NAME (method); |
4508 | int aflags; | |
4509 | ||
5e942c50 APB |
4510 | /* If we previously found something and its name was saved, |
4511 | reinstall it now */ | |
4512 | if (found && saved_found_wfl) | |
ba179f9f APB |
4513 | { |
4514 | DECL_NAME (found) = saved_found_wfl; | |
4515 | saved_found_wfl = NULL_TREE; | |
4516 | } | |
5e942c50 | 4517 | |
e04a16fb AG |
4518 | /* Check for redefinitions */ |
4519 | if (check_method_redefinition (class, method)) | |
4520 | continue; | |
4521 | ||
22eed1e6 APB |
4522 | /* If we see one constructor a mark so we don't generate the |
4523 | default one. Also skip other verifications: constructors | |
4524 | can't be inherited hence hiden or overriden */ | |
4525 | if (DECL_CONSTRUCTOR_P (method)) | |
4526 | { | |
4527 | saw_constructor = 1; | |
4528 | continue; | |
4529 | } | |
4530 | ||
c877974e APB |
4531 | /* We verify things thrown by the method. They must inherits from |
4532 | java.lang.Throwable */ | |
4533 | for (mthrows = DECL_FUNCTION_THROWS (method); | |
4534 | mthrows; mthrows = TREE_CHAIN (mthrows)) | |
4535 | { | |
4536 | if (!inherits_from_p (TREE_VALUE (mthrows), throwable_type_node)) | |
4537 | parse_error_context | |
4538 | (TREE_PURPOSE (mthrows), "Class `%s' in `throws' clause must be " | |
4539 | "a subclass of class `java.lang.Throwable'", | |
4540 | IDENTIFIER_POINTER | |
4541 | (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows))))); | |
4542 | } | |
4543 | ||
e04a16fb | 4544 | sig = build_java_argument_signature (TREE_TYPE (method)); |
e04a16fb | 4545 | found = lookup_argument_method (super_class, DECL_NAME (method), sig); |
b9f7e36c | 4546 | |
5e942c50 | 4547 | /* Nothing overrides or it's a private method. */ |
aabd7048 | 4548 | if (!found) |
5e942c50 | 4549 | continue; |
aabd7048 PB |
4550 | if (METHOD_PRIVATE (found)) |
4551 | { | |
4552 | found = NULL_TREE; | |
4553 | continue; | |
4554 | } | |
5e942c50 APB |
4555 | |
4556 | /* If found wasn't verified, it's DECL_NAME won't be set properly. | |
4557 | We set it temporarily for the sake of the error report. */ | |
4558 | saved_found_wfl = DECL_NAME (found); | |
4559 | reset_method_name (found); | |
4560 | ||
e04a16fb AG |
4561 | /* Can't override a method with the same name and different return |
4562 | types. */ | |
4563 | if (TREE_TYPE (TREE_TYPE (found)) != TREE_TYPE (TREE_TYPE (method))) | |
b9f7e36c | 4564 | { |
0a2138e2 APB |
4565 | char *t = strdup (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), |
4566 | 0)); | |
b9f7e36c APB |
4567 | parse_error_context |
4568 | (method_wfl, | |
4569 | "Method `%s' was defined with return type `%s' in class `%s'", | |
0a2138e2 | 4570 | lang_printable_name (found, 0), t, |
b9f7e36c APB |
4571 | IDENTIFIER_POINTER |
4572 | (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4573 | free (t); | |
4574 | } | |
e04a16fb AG |
4575 | |
4576 | /* Can't override final. Can't override static. */ | |
4577 | if (METHOD_FINAL (found) || METHOD_STATIC (found)) | |
4578 | { | |
4579 | /* Static *can* override static */ | |
4580 | if (METHOD_STATIC (found) && METHOD_STATIC (method)) | |
4581 | continue; | |
4582 | parse_error_context | |
4583 | (method_wfl, | |
4584 | "%s methods can't be overriden. Method `%s' is %s in class `%s'", | |
4585 | (METHOD_FINAL (found) ? "Final" : "Static"), | |
0a2138e2 | 4586 | lang_printable_name (found, 0), |
e04a16fb AG |
4587 | (METHOD_FINAL (found) ? "final" : "static"), |
4588 | IDENTIFIER_POINTER | |
4589 | (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4590 | continue; | |
4591 | } | |
4592 | /* Static method can't override instance method. */ | |
4593 | if (METHOD_STATIC (method)) | |
4594 | { | |
4595 | parse_error_context | |
4596 | (method_wfl, | |
4597 | "Instance methods can't be overriden by a static method. Method " | |
4598 | "`%s' is an instance method in class `%s'", | |
0a2138e2 | 4599 | lang_printable_name (found, 0), |
e04a16fb AG |
4600 | IDENTIFIER_POINTER |
4601 | (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4602 | continue; | |
4603 | } | |
5e942c50 APB |
4604 | |
4605 | aflags = get_access_flags_from_decl (found); | |
4606 | /* - Overriding/hiding public must be public | |
4607 | - Overriding/hiding protected must be protected or public | |
4608 | - If the overriden or hidden method has default (package) | |
4609 | access, then the overriding or hiding method must not be | |
4610 | private; otherwise, a compile-time error occurs */ | |
4611 | if ((METHOD_PUBLIC (found) && !METHOD_PUBLIC (method)) | |
4612 | || (METHOD_PROTECTED (found) | |
4613 | && !(METHOD_PUBLIC (method) || METHOD_PROTECTED (method))) | |
4614 | || (!(aflags & (ACC_PUBLIC | ACC_PRIVATE | ACC_STATIC)) | |
4615 | && METHOD_PRIVATE (method))) | |
e04a16fb AG |
4616 | { |
4617 | parse_error_context | |
4618 | (method_wfl, | |
4619 | "Methods can't be overridden to be more private. Method `%s' is " | |
5e942c50 APB |
4620 | "not %s in class `%s'", lang_printable_name (method, 0), |
4621 | (METHOD_PUBLIC (method) ? "public" : | |
4622 | (METHOD_PRIVATE (method) ? "private" : "protected")), | |
4623 | IDENTIFIER_POINTER (DECL_NAME | |
4624 | (TYPE_NAME (DECL_CONTEXT (found))))); | |
e04a16fb AG |
4625 | continue; |
4626 | } | |
4627 | ||
b9f7e36c APB |
4628 | /* Overriding methods must have compatible `throws' clauses on checked |
4629 | exceptions, if any */ | |
4630 | check_throws_clauses (method, method_wfl, found); | |
4631 | ||
e04a16fb | 4632 | /* If the method has default access in an other package, then |
b9f7e36c | 4633 | issue a warning that the current method doesn't override the |
5e942c50 APB |
4634 | one that was found elsewhere. Do not issue this warning when |
4635 | the match was found in java.lang.Object. */ | |
4636 | if (DECL_CONTEXT (found) != object_type_node | |
4637 | && (!aflags || (aflags > ACC_PROTECTED)) | |
c877974e APB |
4638 | && !class_in_current_package (DECL_CONTEXT (found)) |
4639 | && flag_not_overriding) | |
e04a16fb AG |
4640 | parse_warning_context |
4641 | (method_wfl, "Method `%s' in class `%s' does not " | |
4642 | "override the corresponding method in class `%s', which is " | |
4643 | "private to a different package", | |
0a2138e2 | 4644 | lang_printable_name (found, 0), |
e04a16fb AG |
4645 | IDENTIFIER_POINTER (DECL_NAME (class_decl)), |
4646 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4647 | ||
e04a16fb AG |
4648 | /* Inheriting multiple methods with the same signature. FIXME */ |
4649 | } | |
4650 | ||
5e942c50 APB |
4651 | /* Don't forget eventual pending found and saved_found_wfl. Take |
4652 | into account that we might have exited because we saw an | |
4653 | aritifical method as the last entry. */ | |
4654 | ||
4655 | if (found && !DECL_ARTIFICIAL (found) && saved_found_wfl) | |
4656 | DECL_NAME (found) = saved_found_wfl; | |
4657 | ||
23a79c61 APB |
4658 | if (!TYPE_NVIRTUALS (class)) |
4659 | TYPE_METHODS (class) = nreverse (TYPE_METHODS (class)); | |
e04a16fb | 4660 | |
22eed1e6 | 4661 | if (!saw_constructor) |
e04a16fb | 4662 | { |
23a79c61 APB |
4663 | /* No constructor seen, we craft one, at line 0. Since this |
4664 | operation takes place after we laid methods out | |
4665 | (layout_class_methods), we prepare the its DECL | |
4666 | appropriately. */ | |
22eed1e6 APB |
4667 | int flags; |
4668 | tree decl; | |
4669 | ||
4670 | /* If the class is declared PUBLIC, the default constructor is | |
4671 | PUBLIC otherwise it has default access implied by no access | |
4672 | modifiers. */ | |
4673 | flags = (get_access_flags_from_decl (class_decl) & ACC_PUBLIC ? | |
4674 | ACC_PUBLIC : 0); | |
4675 | decl = create_artificial_method (class, flags, void_type_node, | |
de4c7b02 | 4676 | init_identifier_node, end_params_node); |
e04a16fb | 4677 | DECL_CONSTRUCTOR_P (decl) = 1; |
23a79c61 | 4678 | layout_class_method (TREE_TYPE (class_decl), NULL_TREE, decl, NULL_TREE); |
e04a16fb AG |
4679 | } |
4680 | } | |
4681 | ||
b9f7e36c APB |
4682 | /* Return a non zero value if the `throws' clause of METHOD (if any) |
4683 | is incompatible with the `throws' clause of FOUND (if any). */ | |
4684 | ||
4685 | static void | |
4686 | check_throws_clauses (method, method_wfl, found) | |
4687 | tree method, method_wfl, found; | |
4688 | { | |
4689 | tree mthrows, fthrows; | |
4690 | ||
c877974e APB |
4691 | /* Can't check these things with class loaded from bytecode. FIXME */ |
4692 | if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (found))) | |
4693 | return; | |
4694 | ||
b9f7e36c APB |
4695 | for (mthrows = DECL_FUNCTION_THROWS (method); |
4696 | mthrows; mthrows = TREE_CHAIN (mthrows)) | |
4697 | { | |
4698 | /* We don't verify unchecked expressions */ | |
c877974e | 4699 | if (IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (mthrows))) |
b9f7e36c APB |
4700 | continue; |
4701 | /* Checked expression must be compatible */ | |
4702 | for (fthrows = DECL_FUNCTION_THROWS (found); | |
4703 | fthrows; fthrows = TREE_CHAIN (fthrows)) | |
4704 | if (inherits_from_p (TREE_VALUE (mthrows), TREE_VALUE (fthrows))) | |
4705 | break; | |
4706 | if (!fthrows) | |
4707 | { | |
4708 | parse_error_context | |
4709 | (method_wfl, "Invalid checked exception class `%s' in " | |
4710 | "`throws' clause. The exception must be a subclass of an " | |
4711 | "exception thrown by `%s' from class `%s'", | |
4712 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))), | |
0a2138e2 | 4713 | lang_printable_name (found, 0), |
b9f7e36c APB |
4714 | IDENTIFIER_POINTER |
4715 | (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4716 | } | |
4717 | } | |
4718 | } | |
4719 | ||
e04a16fb AG |
4720 | /* Check abstract method of interface INTERFACE */ |
4721 | ||
4722 | static void | |
5e942c50 APB |
4723 | java_check_abstract_methods (interface_decl) |
4724 | tree interface_decl; | |
e04a16fb AG |
4725 | { |
4726 | int i, n; | |
4727 | tree method, basetype_vec, found; | |
5e942c50 | 4728 | tree interface = TREE_TYPE (interface_decl); |
e04a16fb AG |
4729 | |
4730 | for (method = TYPE_METHODS (interface); method; method = TREE_CHAIN (method)) | |
4731 | { | |
b9f7e36c | 4732 | tree method_wfl = DECL_NAME (method); |
e04a16fb AG |
4733 | |
4734 | /* 2- Check for double definition inside the defining interface */ | |
4735 | if (check_method_redefinition (interface, method)) | |
4736 | continue; | |
4737 | ||
4738 | /* 3- Overriding is OK as far as we preserve the return type and | |
b9f7e36c | 4739 | the thrown exceptions (FIXME) */ |
e04a16fb AG |
4740 | found = lookup_java_interface_method2 (interface, method); |
4741 | if (found) | |
4742 | { | |
5e942c50 APB |
4743 | char *t; |
4744 | tree saved_found_wfl = DECL_NAME (found); | |
4745 | reset_method_name (found); | |
4746 | t = strdup (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 0)); | |
e04a16fb | 4747 | parse_error_context |
b9f7e36c | 4748 | (method_wfl, |
5e942c50 | 4749 | "Method `%s' was defined with return type `%s' in class `%s'", |
0a2138e2 | 4750 | lang_printable_name (found, 0), t, |
b9f7e36c APB |
4751 | IDENTIFIER_POINTER |
4752 | (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4753 | free (t); | |
e04a16fb | 4754 | continue; |
5e942c50 APB |
4755 | |
4756 | DECL_NAME (found) = saved_found_wfl; | |
e04a16fb AG |
4757 | } |
4758 | } | |
4759 | ||
4760 | /* 4- Inherited methods can't differ by their returned types */ | |
4761 | if (!(basetype_vec = TYPE_BINFO_BASETYPES (interface))) | |
4762 | return; | |
4763 | n = TREE_VEC_LENGTH (basetype_vec); | |
4764 | for (i = 0; i < n; i++) | |
4765 | { | |
4766 | tree sub_interface_method, sub_interface; | |
4767 | tree vec_elt = TREE_VEC_ELT (basetype_vec, i); | |
4768 | if (!vec_elt) | |
4769 | continue; | |
4770 | sub_interface = BINFO_TYPE (vec_elt); | |
4771 | for (sub_interface_method = TYPE_METHODS (sub_interface); | |
4772 | sub_interface_method; | |
4773 | sub_interface_method = TREE_CHAIN (sub_interface_method)) | |
4774 | { | |
4775 | found = lookup_java_interface_method2 (interface, | |
4776 | sub_interface_method); | |
4777 | if (found && (found != sub_interface_method)) | |
5e942c50 APB |
4778 | { |
4779 | tree saved_found_wfl = DECL_NAME (found); | |
4780 | reset_method_name (found); | |
4781 | parse_error_context | |
4782 | (lookup_cl (sub_interface_method), | |
4783 | "Interface `%s' inherits method `%s' from interface `%s'. " | |
4784 | "This method is redefined with a different return type in " | |
4785 | "interface `%s'", | |
4786 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (interface))), | |
4787 | lang_printable_name (found, 0), | |
4788 | IDENTIFIER_POINTER | |
4789 | (DECL_NAME (TYPE_NAME | |
4790 | (DECL_CONTEXT (sub_interface_method)))), | |
4791 | IDENTIFIER_POINTER | |
4792 | (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found))))); | |
4793 | DECL_NAME (found) = saved_found_wfl; | |
4794 | } | |
e04a16fb AG |
4795 | } |
4796 | } | |
4797 | } | |
4798 | ||
e04a16fb AG |
4799 | /* Lookup methods in interfaces using their name and partial |
4800 | signature. Return a matching method only if their types differ. */ | |
4801 | ||
4802 | static tree | |
4803 | lookup_java_interface_method2 (class, method_decl) | |
4804 | tree class, method_decl; | |
4805 | { | |
4806 | int i, n; | |
4807 | tree basetype_vec = TYPE_BINFO_BASETYPES (class), to_return; | |
4808 | ||
4809 | if (!basetype_vec) | |
4810 | return NULL_TREE; | |
4811 | ||
4812 | n = TREE_VEC_LENGTH (basetype_vec); | |
4813 | for (i = 0; i < n; i++) | |
4814 | { | |
4815 | tree vec_elt = TREE_VEC_ELT (basetype_vec, i), to_return; | |
4816 | if ((BINFO_TYPE (vec_elt) != object_type_node) | |
4817 | && (to_return = | |
4818 | lookup_java_method2 (BINFO_TYPE (vec_elt), method_decl, 1))) | |
4819 | return to_return; | |
4820 | } | |
4821 | for (i = 0; i < n; i++) | |
4822 | { | |
4823 | to_return = lookup_java_interface_method2 | |
4824 | (BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i)), method_decl); | |
4825 | if (to_return) | |
4826 | return to_return; | |
4827 | } | |
4828 | ||
4829 | return NULL_TREE; | |
4830 | } | |
4831 | ||
4832 | /* Lookup method using their name and partial signature. Return a | |
4833 | matching method only if their types differ. */ | |
4834 | ||
4835 | static tree | |
4836 | lookup_java_method2 (clas, method_decl, do_interface) | |
4837 | tree clas, method_decl; | |
4838 | int do_interface; | |
4839 | { | |
5e942c50 APB |
4840 | tree method, method_signature, method_name, method_type, name; |
4841 | ||
e04a16fb | 4842 | method_signature = build_java_argument_signature (TREE_TYPE (method_decl)); |
5e942c50 APB |
4843 | name = DECL_NAME (method_decl); |
4844 | method_name = (TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ? | |
4845 | EXPR_WFL_NODE (name) : name); | |
e04a16fb AG |
4846 | method_type = TREE_TYPE (TREE_TYPE (method_decl)); |
4847 | ||
4848 | while (clas != NULL_TREE) | |
4849 | { | |
4850 | for (method = TYPE_METHODS (clas); | |
4851 | method != NULL_TREE; method = TREE_CHAIN (method)) | |
4852 | { | |
4853 | tree method_sig = build_java_argument_signature (TREE_TYPE (method)); | |
5e942c50 APB |
4854 | tree name = DECL_NAME (method); |
4855 | if ((TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ? | |
4856 | EXPR_WFL_NODE (name) : name) == method_name | |
e04a16fb AG |
4857 | && method_sig == method_signature |
4858 | && TREE_TYPE (TREE_TYPE (method)) != method_type) | |
5e942c50 | 4859 | return method; |
e04a16fb AG |
4860 | } |
4861 | clas = (do_interface ? NULL_TREE : CLASSTYPE_SUPER (clas)); | |
4862 | } | |
4863 | return NULL_TREE; | |
4864 | } | |
4865 | ||
4866 | /* Return the line that matches DECL line number. Used during error | |
4867 | report */ | |
4868 | ||
4869 | static tree | |
4870 | lookup_cl (decl) | |
4871 | tree decl; | |
4872 | { | |
4873 | static tree cl = NULL_TREE; | |
4874 | ||
4875 | if (!decl) | |
4876 | return NULL_TREE; | |
4877 | ||
4878 | if (cl == NULL_TREE) | |
4879 | cl = build_expr_wfl (NULL_TREE, NULL, 0, 0); | |
4880 | ||
4881 | EXPR_WFL_FILENAME_NODE (cl) = get_identifier (DECL_SOURCE_FILE (decl)); | |
4882 | EXPR_WFL_SET_LINECOL (cl, DECL_SOURCE_LINE_FIRST (decl), -1); | |
4883 | ||
4884 | return cl; | |
4885 | } | |
4886 | ||
4887 | /* Look for a simple name in the single-type import list */ | |
4888 | ||
4889 | static tree | |
4890 | find_name_in_single_imports (name) | |
4891 | tree name; | |
4892 | { | |
4893 | tree node; | |
4894 | ||
4895 | for (node = ctxp->import_list; node; node = TREE_CHAIN (node)) | |
4896 | if (TREE_VALUE (node) == name) | |
4897 | return (EXPR_WFL_NODE (TREE_PURPOSE (node))); | |
4898 | ||
4899 | return NULL_TREE; | |
4900 | } | |
4901 | ||
4902 | /* Process all single-type import. */ | |
4903 | ||
4904 | static int | |
4905 | process_imports () | |
4906 | { | |
4907 | tree import; | |
4908 | int error_found; | |
4909 | ||
4910 | for (import = ctxp->import_list; import; import = TREE_CHAIN (import)) | |
4911 | { | |
4912 | tree to_be_found = EXPR_WFL_NODE (TREE_PURPOSE (import)); | |
4913 | ||
4914 | /* Don't load twice something already defined. */ | |
4915 | if (IDENTIFIER_CLASS_VALUE (to_be_found)) | |
4916 | continue; | |
4917 | QUALIFIED_P (to_be_found) = 1; | |
4918 | load_class (to_be_found, 0); | |
4919 | error_found = | |
4920 | check_pkg_class_access (to_be_found, TREE_PURPOSE (import)); | |
4921 | if (!IDENTIFIER_CLASS_VALUE (to_be_found)) | |
4922 | { | |
4923 | parse_error_context (TREE_PURPOSE (import), | |
4924 | "Class or interface `%s' not found in import", | |
4925 | IDENTIFIER_POINTER (to_be_found)); | |
4926 | return 1; | |
4927 | } | |
4928 | if (error_found) | |
4929 | return 1; | |
4930 | } | |
4931 | return 0; | |
4932 | } | |
4933 | ||
4934 | /* Possibly find a class imported by a single-type import statement. Return | |
4935 | 1 if an error occured, 0 otherwise. */ | |
4936 | ||
4937 | static int | |
4938 | find_in_imports (class_type) | |
4939 | tree class_type; | |
4940 | { | |
4941 | tree import; | |
4942 | ||
4943 | for (import = ctxp->import_list; import; import = TREE_CHAIN (import)) | |
4944 | if (TREE_VALUE (import) == TYPE_NAME (class_type)) | |
4945 | { | |
4946 | TYPE_NAME (class_type) = EXPR_WFL_NODE (TREE_PURPOSE (import)); | |
4947 | QUALIFIED_P (TYPE_NAME (class_type)) = 1; | |
e04a16fb AG |
4948 | } |
4949 | return 0; | |
4950 | } | |
4951 | ||
e04a16fb | 4952 | static int |
63a212ed PB |
4953 | note_possible_classname (name, len) |
4954 | char *name; | |
4955 | int len; | |
e04a16fb | 4956 | { |
63a212ed PB |
4957 | tree node; |
4958 | if (len > 5 && strncmp (&name [len-5], ".java", 5) == 0) | |
4959 | len = len - 5; | |
4960 | else if (len > 6 && strncmp (&name [len-6], ".class", 6) == 0) | |
4961 | len = len - 6; | |
e04a16fb | 4962 | else |
63a212ed PB |
4963 | return 0; |
4964 | node = ident_subst (name, len, "", '/', '.', ""); | |
4965 | IS_A_CLASSFILE_NAME (node) = 1; /* Or soon to be */ | |
4966 | QUALIFIED_P (node) = 1; /* As soon as we turn / into . */ | |
4967 | return 1; | |
e04a16fb AG |
4968 | } |
4969 | ||
4970 | /* Read a import directory, gathering potential match for further type | |
4971 | references. Indifferently reads a filesystem or a ZIP archive | |
4972 | directory. */ | |
4973 | ||
4974 | static void | |
4975 | read_import_dir (wfl) | |
4976 | tree wfl; | |
4977 | { | |
63a212ed PB |
4978 | tree package_id = EXPR_WFL_NODE (wfl); |
4979 | char *package_name = IDENTIFIER_POINTER (package_id); | |
4980 | int package_length = IDENTIFIER_LENGTH (package_id); | |
e04a16fb | 4981 | DIR *dirp = NULL; |
d8fccff5 | 4982 | JCF *saved_jcf = current_jcf; |
e04a16fb | 4983 | |
63a212ed PB |
4984 | int found = 0; |
4985 | int k; | |
4986 | void *entry; | |
4987 | struct buffer filename[1]; | |
4988 | ||
4989 | ||
4990 | if (IS_AN_IMPORT_ON_DEMAND_P (package_id)) | |
4991 | return; | |
4992 | IS_AN_IMPORT_ON_DEMAND_P (package_id) = 1; | |
4993 | ||
4994 | BUFFER_INIT (filename); | |
4995 | buffer_grow (filename, package_length + 100); | |
4996 | ||
4997 | for (entry = jcf_path_start (); entry != NULL; entry = jcf_path_next (entry)) | |
4998 | { | |
4999 | char *entry_name = jcf_path_name (entry); | |
5000 | int entry_length = strlen (entry_name); | |
5001 | if (jcf_path_is_zipfile (entry)) | |
5002 | { | |
5003 | ZipFile *zipf; | |
5004 | buffer_grow (filename, entry_length); | |
5005 | memcpy (filename->data, entry_name, entry_length - 1); | |
5006 | filename->data[entry_length-1] = '\0'; | |
5007 | zipf = opendir_in_zip (filename->data, jcf_path_is_system (entry)); | |
5008 | if (zipf == NULL) | |
5009 | error ("malformed .zip archive in CLASSPATH: %s", entry_name); | |
5010 | else | |
5011 | { | |
5012 | ZipDirectory *zipd = (ZipDirectory *) zipf->central_directory; | |
5013 | BUFFER_RESET (filename); | |
5014 | for (k = 0; k < package_length; k++) | |
5015 | { | |
5016 | char ch = package_name[k]; | |
5017 | *filename->ptr++ = ch == '.' ? '/' : ch; | |
5018 | } | |
5019 | *filename->ptr++ = '/'; | |
5020 | ||
5021 | for (; k < zipf->count; k++, zipd = ZIPDIR_NEXT (zipd)) | |
5022 | { | |
5023 | char *current_entry = ZIPDIR_FILENAME (zipd); | |
5024 | int current_entry_len = zipd->filename_length; | |
5025 | ||
5026 | if (strncmp (filename->data, current_entry, | |
5027 | BUFFER_LENGTH (filename)) != 0) | |
5028 | continue; | |
5029 | found += note_possible_classname (current_entry, | |
5030 | current_entry_len); | |
5031 | } | |
5032 | } | |
5033 | } | |
5034 | else | |
5035 | { | |
5036 | BUFFER_RESET (filename); | |
5037 | buffer_grow (filename, entry_length + package_length + 4); | |
5038 | strcpy (filename->data, entry_name); | |
5039 | filename->ptr = filename->data + entry_length; | |
5040 | for (k = 0; k < package_length; k++) | |
5041 | { | |
5042 | char ch = package_name[k]; | |
5043 | *filename->ptr++ = ch == '.' ? '/' : ch; | |
5044 | } | |
5045 | *filename->ptr = '\0'; | |
5046 | ||
5047 | dirp = opendir (filename->data); | |
5048 | if (dirp == NULL) | |
5049 | continue; | |
5050 | *filename->ptr++ = '/'; | |
5051 | for (;;) | |
5052 | { | |
63a212ed PB |
5053 | int len; |
5054 | char *d_name; | |
5055 | struct dirent *direntp = readdir (dirp); | |
5056 | if (!direntp) | |
5057 | break; | |
5058 | d_name = direntp->d_name; | |
5059 | len = strlen (direntp->d_name); | |
5060 | buffer_grow (filename, len+1); | |
5061 | strcpy (filename->ptr, d_name); | |
5062 | found += note_possible_classname (filename->data + entry_length, | |
5063 | package_length+len+1); | |
5064 | } | |
5065 | if (dirp) | |
5066 | closedir (dirp); | |
5067 | } | |
5068 | } | |
e04a16fb | 5069 | |
63a212ed | 5070 | free (filename->data); |
e04a16fb | 5071 | |
63a212ed PB |
5072 | /* Here we should have a unified way of retrieving an entry, to be |
5073 | indexed. */ | |
5074 | if (!found) | |
e04a16fb AG |
5075 | { |
5076 | static int first = 1; | |
5077 | if (first) | |
5078 | { | |
5079 | char buffer [256]; | |
5080 | sprintf (buffer, "Can't find default package `%s'. Check " | |
5081 | "the CLASSPATH environment variable and the access to the " | |
63a212ed | 5082 | "archives.", package_name); |
e04a16fb AG |
5083 | error (buffer); |
5084 | java_error_count++; | |
5085 | first = 0; | |
5086 | } | |
5087 | else | |
63a212ed PB |
5088 | parse_error_context (wfl, "Package `%s' not found in import", |
5089 | package_name); | |
e04a16fb AG |
5090 | current_jcf = saved_jcf; |
5091 | return; | |
5092 | } | |
e04a16fb AG |
5093 | current_jcf = saved_jcf; |
5094 | } | |
5095 | ||
5096 | /* Possibly find a type in the import on demands specified | |
5097 | types. Returns 1 if an error occured, 0 otherwise. Run throught the | |
5098 | entire list, to detected potential double definitions. */ | |
5099 | ||
5100 | static int | |
5101 | find_in_imports_on_demand (class_type) | |
5102 | tree class_type; | |
5103 | { | |
5104 | tree node, import, node_to_use; | |
5105 | int seen_once = -1; | |
5106 | tree cl; | |
5107 | ||
5108 | for (import = ctxp->import_demand_list; import; import = TREE_CHAIN (import)) | |
5109 | { | |
5110 | char *id_name; | |
e04a16fb AG |
5111 | obstack_grow (&temporary_obstack, |
5112 | IDENTIFIER_POINTER (EXPR_WFL_NODE (TREE_PURPOSE (import))), | |
5113 | IDENTIFIER_LENGTH (EXPR_WFL_NODE (TREE_PURPOSE (import)))); | |
63a212ed | 5114 | obstack_1grow (&temporary_obstack, '.'); |
e04a16fb AG |
5115 | obstack_grow0 (&temporary_obstack, |
5116 | IDENTIFIER_POINTER (TYPE_NAME (class_type)), | |
5117 | IDENTIFIER_LENGTH (TYPE_NAME (class_type))); | |
5118 | id_name = obstack_finish (&temporary_obstack); | |
5119 | ||
5120 | node = maybe_get_identifier (id_name); | |
5121 | if (node && IS_A_CLASSFILE_NAME (node)) | |
5122 | { | |
5123 | if (seen_once < 0) | |
5124 | { | |
5125 | cl = TREE_PURPOSE (import); | |
5126 | seen_once = 1; | |
5127 | node_to_use = node; | |
5128 | } | |
5129 | else | |
5130 | { | |
5131 | seen_once++; | |
5132 | parse_error_context | |
5133 | (import, "Type `%s' also potentially defined in package `%s'", | |
5134 | IDENTIFIER_POINTER (TYPE_NAME (class_type)), | |
5135 | IDENTIFIER_POINTER (EXPR_WFL_NODE (TREE_PURPOSE (import)))); | |
5136 | } | |
5137 | } | |
5138 | } | |
5139 | ||
5140 | if (seen_once == 1) | |
5141 | { | |
5142 | /* Setup lineno so that it refers to the line of the import (in | |
5143 | case we parse a class file and encounter errors */ | |
5144 | tree decl; | |
5145 | int saved_lineno = lineno; | |
5146 | lineno = EXPR_WFL_LINENO (cl); | |
63a212ed | 5147 | TYPE_NAME (class_type) = node_to_use; |
e04a16fb AG |
5148 | QUALIFIED_P (TYPE_NAME (class_type)) = 1; |
5149 | decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type)); | |
5150 | /* If there is no DECL set for the class or if the class isn't | |
5151 | loaded and not seen in source yet, the load */ | |
5152 | if (!decl || (!CLASS_LOADED_P (TREE_TYPE (decl)) | |
5153 | && !CLASS_FROM_SOURCE_P (TREE_TYPE (decl)))) | |
5154 | load_class (node_to_use, 0); | |
5155 | lineno = saved_lineno; | |
5156 | return check_pkg_class_access (TYPE_NAME (class_type), cl); | |
5157 | } | |
5158 | else | |
5159 | return (seen_once < 0 ? 0 : seen_once); /* It's ok not to have found */ | |
5160 | } | |
5161 | ||
5e942c50 APB |
5162 | static tree |
5163 | resolve_package (pkg, next) | |
5164 | tree pkg, *next; | |
5165 | { | |
5166 | tree type_name = NULL_TREE; | |
5167 | char *name = IDENTIFIER_POINTER (EXPR_WFL_NODE (pkg)); | |
5e942c50 APB |
5168 | |
5169 | /* The trick is to determine when the package name stops and were | |
5170 | the name of something contained in the package starts. Then we | |
5171 | return a fully qualified name of what we want to get. */ | |
5172 | ||
5173 | /* Do a quick search on well known package names */ | |
5174 | if (!strncmp (name, "java.lang.reflect", 17)) | |
5175 | { | |
5176 | *next = | |
5177 | TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (EXPR_WFL_QUALIFICATION (pkg)))); | |
5178 | type_name = lookup_package_type (name, 17); | |
5179 | } | |
5180 | else if (!strncmp (name, "java.lang", 9)) | |
5181 | { | |
5182 | *next = TREE_CHAIN (TREE_CHAIN (EXPR_WFL_QUALIFICATION (pkg))); | |
5183 | type_name = lookup_package_type (name, 9); | |
5184 | } | |
5185 | else | |
5186 | return NULL_TREE; /* FIXME, search all imported packages. */ | |
5187 | ||
5188 | return type_name; | |
5189 | } | |
5190 | ||
5191 | static tree | |
5192 | lookup_package_type (name, from) | |
5193 | char *name; | |
5194 | int from; | |
5195 | { | |
5196 | char subname [128]; | |
5197 | char *sub = &name[from+1]; | |
5198 | while (*sub != '.' && *sub) | |
5199 | sub++; | |
5200 | strncpy (subname, name, sub-name); | |
5201 | subname [sub-name] = '\0'; | |
5202 | return get_identifier (subname); | |
5203 | } | |
5204 | ||
e04a16fb AG |
5205 | /* Check that CLASS_NAME refers to a PUBLIC class. Return 0 if no |
5206 | access violations were found, 1 otherwise. */ | |
5207 | ||
5208 | static int | |
5209 | check_pkg_class_access (class_name, cl) | |
5210 | tree class_name; | |
5211 | tree cl; | |
5212 | { | |
5213 | tree type; | |
e04a16fb AG |
5214 | |
5215 | if (!QUALIFIED_P (class_name) || !IDENTIFIER_CLASS_VALUE (class_name)) | |
5216 | return 0; | |
5217 | ||
5218 | if (!(type = TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_name)))) | |
5219 | return 0; | |
5220 | ||
5221 | if (!CLASS_PUBLIC (TYPE_NAME (type))) | |
5222 | { | |
e28cd97b APB |
5223 | /* Access to a private class within the same package is |
5224 | allowed. */ | |
5225 | tree l, r; | |
5226 | breakdown_qualified (&l, &r, class_name); | |
5227 | if (l == ctxp->package) | |
5228 | return 0; | |
5229 | ||
e04a16fb AG |
5230 | parse_error_context |
5231 | (cl, "Can't access %s `%s'. Only public classes and interfaces in " | |
5232 | "other packages can be accessed", | |
5233 | (CLASS_INTERFACE (TYPE_NAME (type)) ? "interface" : "class"), | |
5234 | IDENTIFIER_POINTER (class_name)); | |
5235 | return 1; | |
5236 | } | |
5237 | return 0; | |
5238 | } | |
5239 | ||
5240 | /* Local variable declaration. */ | |
5241 | ||
5242 | static void | |
5243 | declare_local_variables (modifier, type, vlist) | |
5244 | int modifier; | |
5245 | tree type; | |
5246 | tree vlist; | |
5247 | { | |
c583dd46 APB |
5248 | tree decl, current, saved_type; |
5249 | tree type_wfl = NULL_TREE; | |
e04a16fb AG |
5250 | int must_chain = 0; |
5251 | ||
5252 | /* Push a new block if statement were seen between the last time we | |
5253 | pushed a block and now. Keep a cound of block to close */ | |
5254 | if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (current_function_decl))) | |
5255 | { | |
5256 | tree body = DECL_FUNCTION_BODY (current_function_decl); | |
5257 | tree b = enter_block (); | |
5258 | BLOCK_EXPR_ORIGIN(b) = body; | |
5259 | } | |
5260 | ||
5261 | if (modifier) | |
5262 | { | |
5263 | int i; | |
5264 | for (i = 0; i <= 10; i++) if (1 << i & modifier) break; | |
c877974e APB |
5265 | if (modifier == ACC_FINAL) |
5266 | { | |
5267 | if (flag_static_local_jdk1_1) | |
5268 | parse_warning_context (ctxp->modifier_ctx [i], | |
5269 | "Unsupported JDK1.1 `final' local variable " | |
5270 | "(treated as non final)"); | |
5271 | } | |
5272 | else | |
5273 | { | |
5274 | parse_error_context | |
5275 | (ctxp->modifier_ctx [i], | |
5276 | "Only `final' is allowed as a local variables modifier"); | |
5277 | return; | |
5278 | } | |
e04a16fb AG |
5279 | } |
5280 | ||
c583dd46 APB |
5281 | /* Obtain an incomplete type if TYPE is not complete. TYPE_WFL will |
5282 | hold the TYPE value if a new incomplete has to be created (as | |
5283 | opposed to being found already existing and reused). */ | |
5284 | SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain); | |
5285 | ||
5286 | /* If TYPE is fully resolved and we don't have a reference, make one */ | |
1886c9d8 | 5287 | PROMOTE_RECORD_IF_COMPLETE (type, must_chain); |
c583dd46 APB |
5288 | |
5289 | /* Go through all the declared variables */ | |
5290 | for (current = vlist, saved_type = type; current; | |
5291 | current = TREE_CHAIN (current), type = saved_type) | |
e04a16fb | 5292 | { |
c877974e | 5293 | tree other, real_type; |
e04a16fb AG |
5294 | tree wfl = TREE_PURPOSE (current); |
5295 | tree name = EXPR_WFL_NODE (wfl); | |
5296 | tree init = TREE_VALUE (current); | |
e04a16fb | 5297 | |
c583dd46 APB |
5298 | /* Process NAME, as it may specify extra dimension(s) for it */ |
5299 | type = build_array_from_name (type, type_wfl, name, &name); | |
5300 | ||
5301 | /* Variable redefinition check */ | |
5302 | if ((other = lookup_name_in_blocks (name))) | |
5303 | { | |
5304 | variable_redefinition_error (wfl, name, TREE_TYPE (other), | |
5305 | DECL_SOURCE_LINE (other)); | |
5306 | continue; | |
5307 | } | |
5308 | ||
5309 | /* Type adjustment. We may have just readjusted TYPE because | |
5310 | the variable specified more dimensions. Make sure we have | |
5311 | a reference if we can and don't have one already. */ | |
1886c9d8 | 5312 | PROMOTE_RECORD_IF_COMPLETE (type, must_chain); |
c877974e APB |
5313 | |
5314 | real_type = GET_REAL_TYPE (type); | |
c583dd46 APB |
5315 | /* Never layout this decl. This will be done when its scope |
5316 | will be entered */ | |
c877974e | 5317 | decl = build_decl (VAR_DECL, name, real_type); |
c583dd46 APB |
5318 | BLOCK_CHAIN_DECL (decl); |
5319 | ||
e04a16fb AG |
5320 | /* Don't try to use an INIT statement when an error was found */ |
5321 | if (init && java_error_count) | |
5322 | init = NULL_TREE; | |
c583dd46 APB |
5323 | |
5324 | /* Add the initialization function to the current function's code */ | |
5325 | if (init) | |
e04a16fb | 5326 | { |
c583dd46 APB |
5327 | /* Name might have been readjusted */ |
5328 | EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = name; | |
5329 | MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1; | |
5330 | java_method_add_stmt (current_function_decl, | |
5331 | build_debugable_stmt (EXPR_WFL_LINECOL (init), | |
5332 | init)); | |
5333 | } | |
5334 | ||
5335 | /* Setup dependency the type of the decl */ | |
5336 | if (must_chain) | |
5337 | { | |
5338 | jdep *dep; | |
5339 | register_incomplete_type (JDEP_VARIABLE, type_wfl, decl, type); | |
5340 | dep = CLASSD_LAST (ctxp->classd_list); | |
5341 | JDEP_GET_PATCH (dep) = &TREE_TYPE (decl); | |
e04a16fb AG |
5342 | } |
5343 | } | |
5344 | SOURCE_FRONTEND_DEBUG (("Defined locals")); | |
5345 | } | |
5346 | ||
5347 | /* Called during parsing. Build decls from argument list. */ | |
5348 | ||
5349 | static void | |
5350 | source_start_java_method (fndecl) | |
5351 | tree fndecl; | |
5352 | { | |
5353 | tree tem; | |
5354 | tree parm_decl; | |
5355 | int i; | |
5356 | ||
e04a16fb AG |
5357 | current_function_decl = fndecl; |
5358 | ||
5359 | /* New scope for the function */ | |
5360 | enter_block (); | |
5361 | for (tem = TYPE_ARG_TYPES (TREE_TYPE (fndecl)), i = 0; | |
de4c7b02 | 5362 | tem != end_params_node; tem = TREE_CHAIN (tem), i++) |
e04a16fb AG |
5363 | { |
5364 | tree type = TREE_VALUE (tem); | |
5365 | tree name = TREE_PURPOSE (tem); | |
5366 | ||
23a79c61 APB |
5367 | /* If type is incomplete. Create an incomplete decl and ask for |
5368 | the decl to be patched later */ | |
e04a16fb AG |
5369 | if (INCOMPLETE_TYPE_P (type)) |
5370 | { | |
5371 | jdep *jdep; | |
c877974e APB |
5372 | tree real_type = GET_REAL_TYPE (type); |
5373 | parm_decl = build_decl (PARM_DECL, name, real_type); | |
23a79c61 | 5374 | type = obtain_incomplete_type (type); |
e04a16fb AG |
5375 | register_incomplete_type (JDEP_PARM, NULL_TREE, NULL_TREE, type); |
5376 | jdep = CLASSD_LAST (ctxp->classd_list); | |
5377 | JDEP_MISC (jdep) = name; | |
5378 | JDEP_GET_PATCH (jdep) = &TREE_TYPE (parm_decl); | |
5379 | } | |
5380 | else | |
5381 | parm_decl = build_decl (PARM_DECL, name, type); | |
5382 | ||
5383 | BLOCK_CHAIN_DECL (parm_decl); | |
5384 | } | |
5385 | tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)); | |
5386 | BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)) = | |
5387 | nreverse (tem); | |
5388 | DECL_ARG_SLOT_COUNT (current_function_decl) = i; | |
5389 | } | |
5390 | ||
22eed1e6 APB |
5391 | /* Called during parsing. Creates an artificial method declaration. */ |
5392 | ||
5393 | static tree | |
5394 | create_artificial_method (class, flags, type, name, args) | |
5395 | tree class; | |
5396 | int flags; | |
5397 | tree type, name, args; | |
5398 | { | |
5399 | int saved_lineno = lineno; | |
5400 | tree mdecl; | |
5401 | ||
5402 | lineno = 0; | |
5403 | mdecl = make_node (FUNCTION_TYPE); | |
5404 | TREE_TYPE (mdecl) = type; | |
5405 | TYPE_ARG_TYPES (mdecl) = args; | |
5406 | mdecl = add_method (class, flags, name, build_java_signature (mdecl)); | |
5407 | lineno = saved_lineno; | |
5408 | DECL_ARTIFICIAL (mdecl) = 1; | |
5409 | return mdecl; | |
5410 | } | |
5411 | ||
5412 | /* Starts the body if an artifical method. */ | |
5413 | ||
5414 | static void | |
5415 | start_artificial_method_body (mdecl) | |
5416 | tree mdecl; | |
5417 | { | |
5418 | DECL_SOURCE_LINE (mdecl) = 1; | |
5419 | DECL_SOURCE_LINE_MERGE (mdecl, 1); | |
5420 | source_start_java_method (mdecl); | |
5421 | enter_block (); | |
5422 | } | |
5423 | ||
5424 | static void | |
5425 | end_artificial_method_body (mdecl) | |
5426 | tree mdecl; | |
5427 | { | |
5428 | BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (mdecl)) = exit_block (); | |
5429 | exit_block (); | |
5430 | } | |
5431 | ||
e04a16fb AG |
5432 | /* Called during expansion. Push decls formerly built from argument |
5433 | list so they're usable during expansion. */ | |
5434 | ||
5435 | static void | |
5436 | expand_start_java_method (fndecl) | |
5437 | tree fndecl; | |
5438 | { | |
5439 | tree tem, *ptr; | |
e04a16fb | 5440 | |
e04a16fb AG |
5441 | current_function_decl = fndecl; |
5442 | ||
5443 | announce_function (fndecl); | |
5444 | pushlevel (1); /* Push parameters */ | |
5445 | ptr = &DECL_ARGUMENTS (fndecl); | |
5446 | tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)); | |
5447 | while (tem) | |
5448 | { | |
5449 | tree next = TREE_CHAIN (tem); | |
b67d701b PB |
5450 | tree type = TREE_TYPE (tem); |
5451 | #ifdef PROMOTE_PROTOTYPES | |
5452 | if (TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node) | |
5453 | && INTEGRAL_TYPE_P (type)) | |
5454 | type = integer_type_node; | |
5455 | #endif | |
5456 | DECL_ARG_TYPE (tem) = type; | |
e04a16fb AG |
5457 | layout_decl (tem, 0); |
5458 | pushdecl (tem); | |
5459 | INITIALIZED_P (tem) = 1; /* Parms are initialized */ | |
5460 | *ptr = tem; | |
5461 | ptr = &TREE_CHAIN (tem); | |
5462 | tem = next; | |
5463 | } | |
5464 | *ptr = NULL_TREE; | |
5465 | pushdecl_force_head (DECL_ARGUMENTS (fndecl)); | |
5466 | lineno = DECL_SOURCE_LINE_FIRST (fndecl); | |
5467 | complete_start_java_method (fndecl); | |
5468 | } | |
5469 | ||
5470 | /* Terminate a function and expand its body. */ | |
5471 | ||
5472 | static void | |
5473 | source_end_java_method () | |
5474 | { | |
5475 | tree fndecl = current_function_decl; | |
5476 | ||
5477 | java_parser_context_save_global (); | |
5478 | lineno = ctxp->last_ccb_indent1; | |
5479 | ||
b67d701b PB |
5480 | /* Set EH language codes */ |
5481 | java_set_exception_lang_code (); | |
5482 | ||
e04a16fb AG |
5483 | /* Generate function's code */ |
5484 | if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)) | |
5485 | && ! flag_emit_class_files) | |
5486 | expand_expr_stmt (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl))); | |
5487 | ||
5488 | /* pop out of its parameters */ | |
5489 | pushdecl_force_head (DECL_ARGUMENTS (fndecl)); | |
5490 | poplevel (1, 0, 1); | |
5491 | BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl; | |
5492 | ||
5493 | /* Generate rtl for function exit. */ | |
5494 | if (! flag_emit_class_files) | |
5495 | { | |
5496 | lineno = DECL_SOURCE_LINE_LAST (fndecl); | |
b67d701b PB |
5497 | /* Emit catch-finally clauses */ |
5498 | emit_handlers (); | |
e04a16fb AG |
5499 | expand_function_end (input_filename, lineno, 0); |
5500 | ||
5501 | /* Run the optimizers and output assembler code for this function. */ | |
5502 | rest_of_compilation (fndecl); | |
5503 | } | |
5504 | ||
5505 | current_function_decl = NULL_TREE; | |
5506 | /* permanent_allocation (1); */ | |
5507 | java_parser_context_restore_global (); | |
5508 | } | |
5509 | ||
5510 | /* Record EXPR in the current function block. Complements compound | |
5511 | expression second operand if necessary. */ | |
5512 | ||
5513 | tree | |
5514 | java_method_add_stmt (fndecl, expr) | |
5515 | tree fndecl, expr; | |
5516 | { | |
b67d701b PB |
5517 | return add_stmt_to_block (DECL_FUNCTION_BODY (fndecl), NULL_TREE, expr); |
5518 | } | |
e04a16fb | 5519 | |
b67d701b PB |
5520 | static tree |
5521 | add_stmt_to_block (b, type, stmt) | |
5522 | tree b, type, stmt; | |
5523 | { | |
5524 | tree body = BLOCK_EXPR_BODY (b), c; | |
5525 | ||
e04a16fb AG |
5526 | if (java_error_count) |
5527 | return body; | |
b67d701b PB |
5528 | |
5529 | if ((c = add_stmt_to_compound (body, type, stmt)) == body) | |
e04a16fb AG |
5530 | return body; |
5531 | ||
b67d701b PB |
5532 | BLOCK_EXPR_BODY (b) = c; |
5533 | TREE_SIDE_EFFECTS (c) = 1; | |
5534 | return c; | |
e04a16fb AG |
5535 | } |
5536 | ||
5537 | /* Add STMT to EXISTING if possible, otherwise create a new | |
5538 | COMPOUND_EXPR and add STMT to it. */ | |
5539 | ||
5540 | static tree | |
5541 | add_stmt_to_compound (existing, type, stmt) | |
5542 | tree existing, type, stmt; | |
5543 | { | |
15fdcfe9 PB |
5544 | if (existing) |
5545 | return build (COMPOUND_EXPR, type, existing, stmt); | |
e04a16fb | 5546 | else |
15fdcfe9 | 5547 | return stmt; |
e04a16fb AG |
5548 | } |
5549 | ||
5550 | /* Hold THIS for the scope of the current public method decl. */ | |
5551 | static tree current_this; | |
5552 | ||
1886c9d8 APB |
5553 | void java_layout_seen_class_methods () |
5554 | { | |
5555 | tree previous_list = all_class_list; | |
5556 | tree end = NULL_TREE; | |
5557 | tree current; | |
5558 | ||
5559 | while (1) | |
5560 | { | |
5561 | for (current = previous_list; | |
5562 | current != end; current = TREE_CHAIN (current)) | |
5563 | layout_class_methods (TREE_TYPE (TREE_VALUE (current))); | |
5564 | ||
5565 | if (previous_list != all_class_list) | |
5566 | { | |
5567 | end = previous_list; | |
5568 | previous_list = all_class_list; | |
5569 | } | |
5570 | else | |
5571 | break; | |
5572 | } | |
5573 | } | |
5574 | ||
23a79c61 APB |
5575 | /* Layout the methods of all classes loaded in one way on an |
5576 | other. Check methods of source parsed classes. Then reorder the | |
5577 | fields and layout the classes or the type of all source parsed | |
5578 | classes */ | |
e04a16fb AG |
5579 | |
5580 | void | |
5581 | java_layout_classes () | |
5582 | { | |
5583 | tree current; | |
bc3ca41b | 5584 | int save_error_count = java_error_count; |
5e942c50 | 5585 | |
23a79c61 | 5586 | /* Layout the methods of all classes seen so far */ |
1886c9d8 | 5587 | java_layout_seen_class_methods (); |
23a79c61 APB |
5588 | java_parse_abort_on_error (); |
5589 | all_class_list = NULL_TREE; | |
5590 | ||
5591 | /* Then check the methods of all parsed classes */ | |
5592 | for (current = ctxp->gclass_list; current; current = TREE_CHAIN (current)) | |
5593 | if (CLASS_FROM_SOURCE_P (TREE_TYPE (TREE_VALUE (current)))) | |
5594 | CHECK_METHODS (TREE_VALUE (current)); | |
5595 | java_parse_abort_on_error (); | |
5596 | ||
5e942c50 | 5597 | for (current = ctxp->gclass_list; current; current = TREE_CHAIN (current)) |
e04a16fb | 5598 | { |
5e942c50 | 5599 | current_class = TREE_TYPE (TREE_VALUE (current)); |
22eed1e6 | 5600 | |
c877974e APB |
5601 | /* Reverse the fields, but leave the dummy field in front. |
5602 | Fields are already ordered for Object and Class */ | |
5603 | if (TYPE_FIELDS (current_class) && current_class != object_type_node | |
5604 | && current_class != class_type_node) | |
5605 | { | |
23a79c61 APB |
5606 | /* If the dummy field is there, reverse the right fields and |
5607 | just layout the type for proper fields offset */ | |
c877974e APB |
5608 | if (!DECL_NAME (TYPE_FIELDS (current_class))) |
5609 | { | |
5610 | tree fields = TYPE_FIELDS (current_class); | |
5611 | TREE_CHAIN (fields) = nreverse (TREE_CHAIN (fields)); | |
5612 | TYPE_SIZE (current_class) = NULL_TREE; | |
5613 | layout_type (current_class); | |
5614 | } | |
23a79c61 APB |
5615 | /* We don't have a dummy field, we need to layout the class, |
5616 | after having reversed the fields */ | |
c877974e APB |
5617 | else |
5618 | { | |
5619 | TYPE_FIELDS (current_class) = | |
5620 | nreverse (TYPE_FIELDS (current_class)); | |
5621 | TYPE_SIZE (current_class) = NULL_TREE; | |
5622 | layout_class (current_class); | |
5623 | } | |
5624 | } | |
23a79c61 APB |
5625 | else |
5626 | layout_class (current_class); | |
5e942c50 | 5627 | |
c877974e APB |
5628 | /* From now on, the class is considered completely loaded */ |
5629 | CLASS_LOADED_P (current_class) = 1; | |
5630 | ||
5e942c50 APB |
5631 | /* Error reported by the caller */ |
5632 | if (java_error_count) | |
5633 | return; | |
e04a16fb | 5634 | } |
23a79c61 APB |
5635 | |
5636 | /* We might have reloaded classes durign the process of laying out | |
5637 | classes for code generation. We must layout the methods of those | |
5638 | late additions, as constructor checks might use them */ | |
1886c9d8 | 5639 | java_layout_seen_class_methods (); |
23a79c61 | 5640 | java_parse_abort_on_error (); |
e04a16fb AG |
5641 | } |
5642 | ||
5643 | /* Expand all methods in all registered classes. */ | |
5644 | ||
5645 | void | |
5646 | java_complete_expand_methods () | |
5647 | { | |
5648 | tree current; | |
5649 | ||
5650 | for (current = ctxp->class_list; current; current = TREE_CHAIN (current)) | |
5651 | { | |
e04a16fb AG |
5652 | tree class_type = CLASS_TO_HANDLE_TYPE (TREE_TYPE (current)); |
5653 | tree decl; | |
e04a16fb AG |
5654 | |
5655 | current_class = TREE_TYPE (current); | |
5656 | ||
5657 | /* Initialize a new constant pool */ | |
5658 | init_outgoing_cpool (); | |
5659 | ||
7525cc04 APB |
5660 | /* We want <clinit> (if any) to be processed first. */ |
5661 | decl = tree_last (TYPE_METHODS (class_type)); | |
5662 | if (decl && DECL_NAME (decl) == clinit_identifier_node) | |
5663 | { | |
5664 | tree list = nreverse (TYPE_METHODS (class_type)); | |
5665 | list = TREE_CHAIN (list); | |
5666 | TREE_CHAIN (decl) = NULL_TREE; | |
5667 | TYPE_METHODS (class_type) = chainon (decl, nreverse (list)); | |
5668 | } | |
5669 | ||
e04a16fb AG |
5670 | /* Don't process function bodies in interfaces */ |
5671 | if (!CLASS_INTERFACE (TYPE_NAME (current_class))) | |
5672 | for (decl = TYPE_METHODS (class_type); decl; decl = TREE_CHAIN (decl)) | |
5673 | { | |
5674 | current_function_decl = decl; | |
5675 | /* Don't generate debug info on line zero when expanding a | |
5676 | generated constructor. */ | |
5677 | if (DECL_CONSTRUCTOR_P (decl) && !DECL_FUNCTION_BODY (decl)) | |
5678 | { | |
5679 | /* If we found errors, it's too dangerous to try to generate | |
5680 | and expand a constructor */ | |
5681 | if (!java_error_count) | |
5682 | { | |
5683 | restore_line_number_status (1); | |
5684 | java_complete_expand_method (decl); | |
5685 | restore_line_number_status (0); | |
5686 | } | |
5687 | } | |
5e942c50 APB |
5688 | else if (METHOD_ABSTRACT (decl) || METHOD_NATIVE (decl)) |
5689 | continue; | |
5690 | else | |
e04a16fb AG |
5691 | java_complete_expand_method (decl); |
5692 | } | |
5693 | ||
22eed1e6 APB |
5694 | /* Now verify constructor circularity (stop after the first one |
5695 | we find) */ | |
5696 | if (!CLASS_INTERFACE (TYPE_NAME (current_class))) | |
5697 | for (decl = TYPE_METHODS (class_type); decl; decl = TREE_CHAIN (decl)) | |
5698 | if (DECL_CONSTRUCTOR_P (decl) && | |
5699 | verify_constructor_circularity (decl, decl)) | |
5700 | break; | |
5701 | ||
e04a16fb AG |
5702 | /* Make the class data, register it and run the rest of decl |
5703 | compilation on it */ | |
63a212ed PB |
5704 | if (!java_error_count) |
5705 | { | |
5706 | if (flag_emit_class_files) | |
5707 | write_classfile (current_class); | |
aabd7048 | 5708 | else if (! flag_syntax_only) |
63a212ed PB |
5709 | finish_class (current_class); |
5710 | } | |
e04a16fb AG |
5711 | } |
5712 | } | |
5713 | ||
b9f7e36c APB |
5714 | /* Hold a list of catch clauses list. The first element of this list is |
5715 | the list of the catch clauses of the currently analysed try block. */ | |
5716 | static tree currently_caught_type_list; | |
5717 | ||
e04a16fb AG |
5718 | /* Complete and expand a method. */ |
5719 | ||
5720 | static void | |
5721 | java_complete_expand_method (mdecl) | |
5722 | tree mdecl; | |
5723 | { | |
22eed1e6 APB |
5724 | /* Fix constructors before expanding them */ |
5725 | if (DECL_CONSTRUCTOR_P (mdecl)) | |
5726 | fix_constructors (mdecl); | |
e04a16fb | 5727 | |
22eed1e6 | 5728 | /* Expand functions that have a body */ |
e04a16fb AG |
5729 | if (DECL_FUNCTION_BODY (mdecl)) |
5730 | { | |
9bbc7d9f PB |
5731 | tree fbody = DECL_FUNCTION_BODY (mdecl); |
5732 | tree block_body = BLOCK_EXPR_BODY (fbody); | |
e04a16fb AG |
5733 | expand_start_java_method (mdecl); |
5734 | ||
5735 | current_this | |
5736 | = (!METHOD_STATIC (mdecl) ? | |
5737 | BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (mdecl)) : NULL_TREE); | |
5738 | ||
b9f7e36c APB |
5739 | /* Purge the `throws' list of unchecked exceptions */ |
5740 | purge_unchecked_exceptions (mdecl); | |
5741 | ||
5742 | /* Install exceptions thrown with `throws' */ | |
5743 | PUSH_EXCEPTIONS (DECL_FUNCTION_THROWS (mdecl)); | |
5744 | ||
9bbc7d9f | 5745 | if (block_body != NULL_TREE) |
bc3ca41b PB |
5746 | { |
5747 | block_body = java_complete_tree (block_body); | |
5748 | check_for_initialization (block_body); | |
5749 | } | |
9bbc7d9f | 5750 | BLOCK_EXPR_BODY (fbody) = block_body; |
5e942c50 | 5751 | |
9bbc7d9f PB |
5752 | if ((block_body == NULL_TREE || CAN_COMPLETE_NORMALLY (block_body)) |
5753 | && TREE_CODE (TREE_TYPE (TREE_TYPE (mdecl))) != VOID_TYPE) | |
82371d41 | 5754 | missing_return_error (current_function_decl); |
7525cc04 | 5755 | |
e04a16fb AG |
5756 | /* Don't go any further if we've found error(s) during the |
5757 | expansion */ | |
5758 | if (!java_error_count) | |
5759 | source_end_java_method (); | |
22eed1e6 APB |
5760 | else |
5761 | { | |
5762 | pushdecl_force_head (DECL_ARGUMENTS (mdecl)); | |
5763 | poplevel (1, 0, 1); | |
5764 | } | |
b9f7e36c APB |
5765 | |
5766 | /* Pop the exceptions and sanity check */ | |
5767 | POP_EXCEPTIONS(); | |
5768 | if (currently_caught_type_list) | |
5769 | fatal ("Exception list non empty - java_complete_expand_method"); | |
e04a16fb AG |
5770 | } |
5771 | } | |
5772 | ||
22eed1e6 APB |
5773 | /* Craft a body for default constructor. Patch existing constructor |
5774 | bodies with call to super() and field initialization statements if | |
5775 | necessary. */ | |
5776 | ||
5777 | static void | |
5778 | fix_constructors (mdecl) | |
5779 | tree mdecl; | |
5780 | { | |
5781 | tree body = DECL_FUNCTION_BODY (mdecl); | |
22eed1e6 | 5782 | |
22eed1e6 APB |
5783 | if (!body) |
5784 | { | |
89e09b9a PB |
5785 | /* The constructor body must be crafted by hand. It's the |
5786 | constructor we defined when we realize we didn't have the | |
5787 | CLASSNAME() constructor */ | |
5788 | ||
22eed1e6 APB |
5789 | tree compound; |
5790 | ||
5791 | /* It is an error for the compiler to generate a default | |
5792 | constructor if the superclass doesn't have a constructor that | |
5793 | takes no argument */ | |
5794 | if (verify_constructor_super ()) | |
5795 | { | |
5796 | tree sclass_decl = TYPE_NAME (CLASSTYPE_SUPER (current_class)); | |
5797 | char *n = IDENTIFIER_POINTER (DECL_NAME (sclass_decl)); | |
5798 | parse_error_context (lookup_cl (TYPE_NAME (current_class)), | |
5799 | "No constructor matching `%s()' found in " | |
5800 | "class `%s'", n, n); | |
5801 | } | |
5802 | ||
5803 | start_artificial_method_body (mdecl); | |
5804 | ||
5805 | /* We don't generate a super constructor invocation if we're | |
5806 | compiling java.lang.Object. build_super_invocation takes care | |
5807 | of that. */ | |
5808 | compound = java_method_add_stmt (mdecl, build_super_invocation ()); | |
22eed1e6 APB |
5809 | |
5810 | end_artificial_method_body (mdecl); | |
5811 | } | |
5812 | /* Search for an explicit constructor invocation */ | |
5813 | else | |
5814 | { | |
5815 | int found = 0; | |
5816 | tree main_block = BLOCK_EXPR_BODY (body); | |
5817 | tree compound = NULL_TREE; | |
5818 | ||
5819 | while (body) | |
5820 | switch (TREE_CODE (body)) | |
5821 | { | |
5822 | case CALL_EXPR: | |
5823 | found = CALL_EXPLICIT_CONSTRUCTOR_P (body); | |
5824 | body = NULL_TREE; | |
5825 | break; | |
5826 | case COMPOUND_EXPR: | |
5827 | case EXPR_WITH_FILE_LOCATION: | |
5828 | body = TREE_OPERAND (body, 0); | |
5829 | break; | |
5830 | case BLOCK: | |
5831 | body = BLOCK_EXPR_BODY (body); | |
5832 | break; | |
5833 | default: | |
5834 | found = 0; | |
5835 | body = NULL_TREE; | |
5836 | } | |
5837 | /* The constructor is missing an invocation of super() */ | |
5838 | if (!found) | |
5839 | compound = add_stmt_to_compound (compound, NULL_TREE, | |
5840 | build_super_invocation ()); | |
5841 | ||
22eed1e6 APB |
5842 | /* Fix the constructor main block if we're adding extra stmts */ |
5843 | if (compound) | |
5844 | { | |
5845 | compound = add_stmt_to_compound (compound, NULL_TREE, | |
5846 | BLOCK_EXPR_BODY (main_block)); | |
5847 | BLOCK_EXPR_BODY (main_block) = compound; | |
5848 | } | |
5849 | } | |
5850 | } | |
5851 | ||
5852 | /* Browse constructors in the super class, searching for a constructor | |
5853 | that doesn't take any argument. Return 0 if one is found, 1 | |
5854 | otherwise. */ | |
5855 | ||
5856 | static int | |
5857 | verify_constructor_super () | |
5858 | { | |
5859 | tree class = CLASSTYPE_SUPER (current_class); | |
5860 | if (!class) | |
5861 | return 0; | |
5862 | ||
5863 | if (class) | |
5864 | { | |
5865 | tree mdecl; | |
5866 | for (mdecl = TYPE_METHODS (class); mdecl; mdecl = TREE_CHAIN (mdecl)) | |
5867 | { | |
5868 | if (DECL_CONSTRUCTOR_P (mdecl) | |
de4c7b02 | 5869 | && TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (mdecl))) == end_params_node) |
22eed1e6 APB |
5870 | return 0; |
5871 | } | |
5872 | } | |
5873 | return 1; | |
5874 | } | |
5875 | ||
e04a16fb AG |
5876 | /* Expand finals. */ |
5877 | ||
5878 | void | |
5879 | java_expand_finals () | |
5880 | { | |
5881 | } | |
5882 | ||
22eed1e6 | 5883 | /* Generate code for all context remembered for code generation. */ |
b351b287 APB |
5884 | |
5885 | void | |
5886 | java_expand_classes () | |
5887 | { | |
bc3ca41b | 5888 | int save_error_count = java_error_count; |
23a79c61 APB |
5889 | java_parse_abort_on_error (); |
5890 | if (!(ctxp = ctxp_for_generation)) | |
5e942c50 APB |
5891 | return; |
5892 | java_layout_classes (); | |
5893 | java_parse_abort_on_error (); | |
5894 | ||
b351b287 APB |
5895 | for (; ctxp_for_generation; ctxp_for_generation = ctxp_for_generation->next) |
5896 | { | |
5897 | ctxp = ctxp_for_generation; | |
5898 | lang_init_source (2); /* Error msgs have method prototypes */ | |
5899 | java_complete_expand_methods (); /* Complete and expand method bodies */ | |
5900 | java_parse_abort_on_error (); | |
5901 | java_expand_finals (); /* Expand and check the finals */ | |
5902 | java_parse_abort_on_error (); | |
5903 | java_check_final (); /* Check unitialized final */ | |
5904 | java_parse_abort_on_error (); | |
5905 | } | |
b351b287 APB |
5906 | } |
5907 | ||
e04a16fb AG |
5908 | /* Wrap non WFL PRIMARY around a WFL and set EXPR_WFL_QUALIFICATION to |
5909 | a tree list node containing RIGHT. Fore coming RIGHTs will be | |
5910 | chained to this hook. LOCATION contains the location of the | |
5911 | separating `.' operator. */ | |
5912 | ||
5913 | static tree | |
5914 | make_qualified_primary (primary, right, location) | |
5915 | tree primary, right; | |
5916 | int location; | |
5917 | { | |
5918 | tree wfl; | |
5919 | ||
5920 | /* We want to process THIS . xxx symbolicaly, to keep it consistent | |
5921 | with the way we're processing SUPER. A THIS from a primary as a | |
5922 | different form than a SUPER. Turn THIS into something symbolic */ | |
b67d701b | 5923 | if (TREE_CODE (primary) == THIS_EXPR) |
e04a16fb AG |
5924 | { |
5925 | wfl = build_wfl_node (this_identifier_node, input_filename, 0, 0); | |
5926 | EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (primary); | |
5927 | wfl = make_qualified_name (wfl, right, location); | |
5928 | PRIMARY_P (wfl) = 1; | |
5929 | return wfl; | |
5930 | } | |
5931 | /* Other non WFL node are wrapped around a WFL */ | |
5932 | else if (TREE_CODE (primary) != EXPR_WITH_FILE_LOCATION) | |
5933 | { | |
5934 | wfl = build_expr_wfl (NULL_TREE, ctxp->filename, 0, 0); | |
5935 | EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (primary); | |
5936 | EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (primary, NULL_TREE); | |
5937 | } | |
5938 | else | |
5939 | { | |
5940 | wfl = primary; | |
5941 | if (!EXPR_WFL_QUALIFICATION (primary)) | |
5942 | EXPR_WFL_QUALIFICATION (primary) = | |
5943 | build_tree_list (primary, NULL_TREE); | |
5944 | } | |
5945 | ||
5946 | EXPR_WFL_LINECOL (right) = location; | |
5947 | chainon (EXPR_WFL_QUALIFICATION (wfl), build_tree_list (right, NULL_TREE)); | |
5948 | PRIMARY_P (wfl) = 1; | |
5949 | return wfl; | |
5950 | } | |
5951 | ||
5952 | /* Simple merge of two name separated by a `.' */ | |
5953 | ||
5954 | static tree | |
5955 | merge_qualified_name (left, right) | |
5956 | tree left, right; | |
5957 | { | |
5958 | tree node; | |
5959 | obstack_grow (&temporary_obstack, IDENTIFIER_POINTER (left), | |
5960 | IDENTIFIER_LENGTH (left)); | |
5961 | obstack_1grow (&temporary_obstack, '.'); | |
5962 | obstack_grow0 (&temporary_obstack, IDENTIFIER_POINTER (right), | |
5963 | IDENTIFIER_LENGTH (right)); | |
5964 | node = get_identifier (obstack_base (&temporary_obstack)); | |
5965 | obstack_free (&temporary_obstack, obstack_base (&temporary_obstack)); | |
5966 | QUALIFIED_P (node) = 1; | |
5967 | return node; | |
5968 | } | |
5969 | ||
5970 | /* Merge the two parts of a qualified name into LEFT. Set the | |
5971 | location information of the resulting node to LOCATION, usually | |
5972 | inherited from the location information of the `.' operator. */ | |
5973 | ||
5974 | static tree | |
5975 | make_qualified_name (left, right, location) | |
5976 | tree left, right; | |
5977 | int location; | |
5978 | { | |
bc3ca41b PB |
5979 | #ifdef USE_COMPONENT_REF |
5980 | tree node = build (COMPONENT_REF, NULL_TREE, left, right); | |
5981 | EXPR_WFL_LINECOL (node) = location; | |
5982 | return node; | |
5983 | #else | |
e04a16fb AG |
5984 | tree left_id = EXPR_WFL_NODE (left); |
5985 | tree right_id = EXPR_WFL_NODE (right); | |
5986 | tree wfl, merge; | |
5987 | ||
5988 | merge = merge_qualified_name (left_id, right_id); | |
5989 | ||
5990 | /* Left wasn't qualified and is now qualified */ | |
5991 | if (!QUALIFIED_P (left_id)) | |
5992 | { | |
5993 | tree wfl = build_expr_wfl (left_id, ctxp->filename, 0, 0); | |
5994 | EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (left); | |
5995 | EXPR_WFL_QUALIFICATION (left) = build_tree_list (wfl, NULL_TREE); | |
5996 | } | |
5997 | ||
5998 | wfl = build_expr_wfl (right_id, ctxp->filename, 0, 0); | |
5999 | EXPR_WFL_LINECOL (wfl) = location; | |
6000 | chainon (EXPR_WFL_QUALIFICATION (left), build_tree_list (wfl, NULL_TREE)); | |
6001 | ||
6002 | EXPR_WFL_NODE (left) = merge; | |
6003 | return left; | |
bc3ca41b | 6004 | #endif |
e04a16fb AG |
6005 | } |
6006 | ||
6007 | /* Extract the last identifier component of the qualified in WFL. The | |
6008 | last identifier is removed from the linked list */ | |
6009 | ||
6010 | static tree | |
6011 | cut_identifier_in_qualified (wfl) | |
6012 | tree wfl; | |
6013 | { | |
6014 | tree q; | |
6015 | tree previous = NULL_TREE; | |
6016 | for (q = EXPR_WFL_QUALIFICATION (wfl); ; previous = q, q = TREE_CHAIN (q)) | |
6017 | if (!TREE_CHAIN (q)) | |
6018 | { | |
6019 | if (!previous) | |
6020 | fatal ("Operating on a non qualified qualified WFL - " | |
6021 | "cut_identifier_in_qualified"); | |
6022 | TREE_CHAIN (previous) = NULL_TREE; | |
6023 | return TREE_PURPOSE (q); | |
6024 | } | |
6025 | } | |
6026 | ||
6027 | /* Resolve the expression name NAME. Return its decl. */ | |
6028 | ||
6029 | static tree | |
5e942c50 | 6030 | resolve_expression_name (id, orig) |
e04a16fb | 6031 | tree id; |
5e942c50 | 6032 | tree *orig; |
e04a16fb AG |
6033 | { |
6034 | tree name = EXPR_WFL_NODE (id); | |
6035 | tree decl; | |
6036 | ||
6037 | /* 6.5.5.1: Simple expression names */ | |
6038 | if (!PRIMARY_P (id) && !QUALIFIED_P (name)) | |
6039 | { | |
6040 | /* 15.13.1: NAME can appear within the scope of a local variable | |
6041 | declaration */ | |
6042 | if ((decl = IDENTIFIER_LOCAL_VALUE (name))) | |
6043 | return decl; | |
6044 | ||
6045 | /* 15.13.1: NAME can appear within a class declaration */ | |
6046 | else | |
6047 | { | |
6048 | decl = lookup_field_wrapper (current_class, name); | |
6049 | if (decl) | |
6050 | { | |
6051 | int fs = FIELD_STATIC (decl); | |
6052 | /* Instance variable (8.3.1.1) can't appear within | |
6053 | static method, static initializer or initializer for | |
6054 | a static variable. */ | |
6055 | if (!fs && METHOD_STATIC (current_function_decl)) | |
6056 | { | |
6057 | parse_error_context | |
6058 | (id, "Can't make a static reference to nonstatic variable " | |
6059 | "`%s' in class `%s'", | |
6060 | IDENTIFIER_POINTER (name), | |
6061 | IDENTIFIER_POINTER (DECL_NAME | |
6062 | (TYPE_NAME (current_class)))); | |
6063 | return error_mark_node; | |
6064 | } | |
22eed1e6 APB |
6065 | /* Instance variables can't appear as an argument of |
6066 | an explicit constructor invocation */ | |
6067 | if (!fs && ctxp->explicit_constructor_p) | |
6068 | { | |
6069 | parse_error_context | |
6070 | (id, "Can't reference `%s' before the superclass " | |
6071 | "constructor has been called", IDENTIFIER_POINTER (name)); | |
6072 | return error_mark_node; | |
6073 | } | |
5e942c50 APB |
6074 | |
6075 | /* Otherwise build what it takes to access the field */ | |
e04a16fb AG |
6076 | decl = build_field_ref ((fs ? NULL_TREE : current_this), |
6077 | current_class, name); | |
5e942c50 APB |
6078 | if (fs && !flag_emit_class_files) |
6079 | decl = build_class_init (current_class, decl); | |
6080 | /* We may be asked to save the real field access node */ | |
6081 | if (orig) | |
6082 | *orig = decl; | |
6083 | /* And we return what we got */ | |
5b09b33e | 6084 | return decl; |
e04a16fb AG |
6085 | } |
6086 | /* Fall down to error report on undefined variable */ | |
6087 | } | |
6088 | } | |
6089 | /* 6.5.5.2 Qualified Expression Names */ | |
6090 | else | |
6091 | { | |
5e942c50 APB |
6092 | if (orig) |
6093 | *orig = NULL_TREE; | |
e04a16fb AG |
6094 | qualify_ambiguous_name (id); |
6095 | /* 15.10.1 Field Access Using a Primary and/or Expression Name */ | |
6096 | /* 15.10.2: Accessing Superclass Members using super */ | |
6097 | return resolve_field_access (id, NULL, NULL); | |
6098 | } | |
6099 | ||
6100 | /* We've got an error here */ | |
6101 | parse_error_context (id, "Undefined variable `%s'", | |
6102 | IDENTIFIER_POINTER (name)); | |
6103 | ||
6104 | return error_mark_node; | |
6105 | } | |
6106 | ||
6107 | /* 15.10.1 Field Acess Using a Primary and/or Expression Name. | |
6108 | We return something suitable to generate the field access. We also | |
6109 | return the field decl in FIELD_DECL and its type in FIELD_TYPE. If | |
6110 | recipient's address can be null. */ | |
6111 | ||
6112 | static tree | |
6113 | resolve_field_access (qual_wfl, field_decl, field_type) | |
6114 | tree qual_wfl; | |
6115 | tree *field_decl, *field_type; | |
6116 | { | |
6117 | int is_static = 0; | |
6118 | tree field_ref; | |
6119 | tree decl, where_found, type_found; | |
6120 | ||
6121 | if (resolve_qualified_expression_name (qual_wfl, &decl, | |
6122 | &where_found, &type_found)) | |
6123 | return error_mark_node; | |
6124 | ||
6125 | /* Resolve the LENGTH field of an array here */ | |
6126 | if (DECL_NAME (decl) == length_identifier_node && TYPE_ARRAY_P (type_found) | |
6127 | && ! flag_emit_class_files) | |
6128 | { | |
6129 | tree length = build_java_array_length_access (where_found); | |
6130 | field_ref = | |
6131 | build_java_arraynull_check (type_found, length, int_type_node); | |
6132 | } | |
6133 | /* We might have been trying to resolve field.method(). In which | |
6134 | case, the resolution is over and decl is the answer */ | |
34f4db93 | 6135 | else if (JDECL_P (decl) && IDENTIFIER_LOCAL_VALUE (DECL_NAME (decl)) == decl) |
e04a16fb | 6136 | field_ref = decl; |
34f4db93 | 6137 | else if (JDECL_P (decl)) |
e04a16fb | 6138 | { |
5e942c50 APB |
6139 | int static_final_found = 0; |
6140 | if (!type_found) | |
6141 | type_found = DECL_CONTEXT (decl); | |
34f4db93 | 6142 | is_static = JDECL_P (decl) && FIELD_STATIC (decl); |
5e942c50 APB |
6143 | if (FIELD_FINAL (decl) |
6144 | && JPRIMITIVE_TYPE_P (TREE_TYPE (decl)) | |
6145 | && DECL_LANG_SPECIFIC (decl) | |
7525cc04 | 6146 | && DECL_INITIAL (decl)) |
5e942c50 | 6147 | { |
7525cc04 | 6148 | field_ref = DECL_INITIAL (decl); |
5e942c50 APB |
6149 | static_final_found = 1; |
6150 | } | |
6151 | else | |
6152 | field_ref = build_field_ref ((is_static ? NULL_TREE : where_found), | |
6153 | type_found, DECL_NAME (decl)); | |
e04a16fb AG |
6154 | if (field_ref == error_mark_node) |
6155 | return error_mark_node; | |
c877974e | 6156 | if (is_static && !static_final_found && !flag_emit_class_files) |
e04a16fb AG |
6157 | { |
6158 | field_ref = build_class_init (type_found, field_ref); | |
6159 | /* If the static field was identified by an expression that | |
6160 | needs to be generated, make the field access a compound | |
6161 | expression whose first part of the evaluation of the | |
6162 | field selector part. */ | |
c877974e APB |
6163 | if (where_found && TREE_CODE (where_found) != TYPE_DECL |
6164 | && TREE_CODE (where_found) != RECORD_TYPE) | |
e04a16fb AG |
6165 | { |
6166 | tree type = QUAL_DECL_TYPE (field_ref); | |
6167 | field_ref = build (COMPOUND_EXPR, type, where_found, field_ref); | |
6168 | } | |
6169 | } | |
6170 | } | |
6171 | else | |
6172 | field_ref = decl; | |
6173 | ||
6174 | if (field_decl) | |
6175 | *field_decl = decl; | |
6176 | if (field_type) | |
c877974e APB |
6177 | *field_type = (QUAL_DECL_TYPE (decl) ? |
6178 | QUAL_DECL_TYPE (decl) : TREE_TYPE (decl)); | |
e04a16fb AG |
6179 | return field_ref; |
6180 | } | |
6181 | ||
e28cd97b APB |
6182 | /* If NODE is an access to f static field, strip out the class |
6183 | initialization part and return the field decl, otherwise, return | |
6184 | NODE. */ | |
6185 | ||
6186 | static tree | |
6187 | strip_out_static_field_access_decl (node) | |
6188 | tree node; | |
6189 | { | |
6190 | if (TREE_CODE (node) == COMPOUND_EXPR) | |
6191 | { | |
6192 | tree op1 = TREE_OPERAND (node, 1); | |
6193 | if (TREE_CODE (op1) == COMPOUND_EXPR) | |
6194 | { | |
6195 | tree call = TREE_OPERAND (op1, 0); | |
6196 | if (TREE_CODE (call) == CALL_EXPR | |
6197 | && TREE_CODE (TREE_OPERAND (call, 0)) == ADDR_EXPR | |
6198 | && TREE_OPERAND (TREE_OPERAND (call, 0), 0) | |
6199 | == soft_initclass_node) | |
6200 | return TREE_OPERAND (op1, 1); | |
6201 | } | |
6202 | } | |
6203 | return node; | |
6204 | } | |
6205 | ||
e04a16fb AG |
6206 | /* 6.5.5.2: Qualified Expression Names */ |
6207 | ||
6208 | static int | |
6209 | resolve_qualified_expression_name (wfl, found_decl, where_found, type_found) | |
6210 | tree wfl; | |
6211 | tree *found_decl, *type_found, *where_found; | |
6212 | { | |
6213 | int from_type = 0; /* Field search initiated from a type */ | |
6214 | int from_super = 0, from_cast = 0; | |
6215 | int previous_call_static = 0; | |
6216 | int is_static; | |
6217 | tree decl = NULL_TREE, type = NULL_TREE, q; | |
c877974e | 6218 | *type_found = *where_found = NULL_TREE; |
e04a16fb AG |
6219 | |
6220 | for (q = EXPR_WFL_QUALIFICATION (wfl); q; q = TREE_CHAIN (q)) | |
6221 | { | |
6222 | tree qual_wfl = QUAL_WFL (q); | |
6223 | ||
6224 | /* 15.10.1 Field Access Using a Primary */ | |
e04a16fb AG |
6225 | switch (TREE_CODE (qual_wfl)) |
6226 | { | |
6227 | case CALL_EXPR: | |
b67d701b | 6228 | case NEW_CLASS_EXPR: |
e04a16fb AG |
6229 | /* If the access to the function call is a non static field, |
6230 | build the code to access it. */ | |
34f4db93 | 6231 | if (JDECL_P (decl) && !FIELD_STATIC (decl)) |
e04a16fb | 6232 | { |
ac825856 APB |
6233 | decl = maybe_access_field (decl, *where_found, |
6234 | DECL_CONTEXT (decl)); | |
e04a16fb AG |
6235 | if (decl == error_mark_node) |
6236 | return 1; | |
6237 | } | |
6238 | /* And code for the function call */ | |
6239 | if (complete_function_arguments (qual_wfl)) | |
6240 | return 1; | |
89e09b9a PB |
6241 | if (from_super && TREE_CODE (qual_wfl) == CALL_EXPR) |
6242 | CALL_USING_SUPER (qual_wfl) = 1; | |
e04a16fb | 6243 | *where_found = |
89e09b9a | 6244 | patch_method_invocation (qual_wfl, decl, type, &is_static, NULL); |
e04a16fb AG |
6245 | if (*where_found == error_mark_node) |
6246 | return 1; | |
6247 | *type_found = type = QUAL_DECL_TYPE (*where_found); | |
6248 | ||
6249 | /* If the previous call was static and this one is too, | |
6250 | build a compound expression to hold the two (because in | |
6251 | that case, previous function calls aren't transported as | |
6252 | forcoming function's argument. */ | |
6253 | if (previous_call_static && is_static) | |
6254 | { | |
6255 | decl = build (COMPOUND_EXPR, type, decl, *where_found); | |
6256 | TREE_SIDE_EFFECTS (decl) = 1; | |
6257 | } | |
6258 | else | |
6259 | { | |
6260 | previous_call_static = is_static; | |
6261 | decl = *where_found; | |
6262 | } | |
6263 | continue; | |
6264 | ||
d8fccff5 APB |
6265 | case NEW_ARRAY_EXPR: |
6266 | *where_found = decl = java_complete_tree (qual_wfl); | |
6267 | if (decl == error_mark_node) | |
6268 | return 1; | |
6269 | *type_found = type = QUAL_DECL_TYPE (decl); | |
6270 | CLASS_LOADED_P (type) = 1; | |
6271 | continue; | |
6272 | ||
e04a16fb AG |
6273 | case CONVERT_EXPR: |
6274 | *where_found = decl = java_complete_tree (qual_wfl); | |
6275 | if (decl == error_mark_node) | |
6276 | return 1; | |
6277 | *type_found = type = QUAL_DECL_TYPE (decl); | |
6278 | from_cast = 1; | |
6279 | continue; | |
6280 | ||
22eed1e6 | 6281 | case CONDITIONAL_EXPR: |
5e942c50 | 6282 | case STRING_CST: |
22eed1e6 APB |
6283 | *where_found = decl = java_complete_tree (qual_wfl); |
6284 | if (decl == error_mark_node) | |
6285 | return 1; | |
6286 | *type_found = type = QUAL_DECL_TYPE (decl); | |
6287 | continue; | |
6288 | ||
e04a16fb AG |
6289 | case ARRAY_REF: |
6290 | /* If the access to the function call is a non static field, | |
6291 | build the code to access it. */ | |
34f4db93 | 6292 | if (JDECL_P (decl) && !FIELD_STATIC (decl)) |
e04a16fb AG |
6293 | { |
6294 | decl = maybe_access_field (decl, *where_found, type); | |
6295 | if (decl == error_mark_node) | |
6296 | return 1; | |
6297 | } | |
6298 | /* And code for the array reference expression */ | |
6299 | decl = java_complete_tree (qual_wfl); | |
6300 | if (decl == error_mark_node) | |
6301 | return 1; | |
6302 | type = QUAL_DECL_TYPE (decl); | |
6303 | continue; | |
0a2138e2 APB |
6304 | |
6305 | default: | |
6306 | /* Fix for -Wall Just go to the next statement. Don't | |
6307 | continue */ | |
e04a16fb AG |
6308 | } |
6309 | ||
6310 | /* If we fall here, we weren't processing a (static) function call. */ | |
6311 | previous_call_static = 0; | |
6312 | ||
6313 | /* It can be the keyword THIS */ | |
6314 | if (EXPR_WFL_NODE (qual_wfl) == this_identifier_node) | |
6315 | { | |
6316 | if (!current_this) | |
6317 | { | |
6318 | parse_error_context | |
6319 | (wfl, "Keyword `this' used outside allowed context"); | |
6320 | return 1; | |
6321 | } | |
6322 | /* We have to generate code for intermediate acess */ | |
6323 | *where_found = decl = current_this; | |
5e942c50 | 6324 | *type_found = type = QUAL_DECL_TYPE (decl); |
e04a16fb AG |
6325 | continue; |
6326 | } | |
6327 | ||
6328 | /* 15.10.2 Accessing Superclass Members using SUPER */ | |
6329 | if (EXPR_WFL_NODE (qual_wfl) == super_identifier_node) | |
6330 | { | |
6331 | tree node; | |
6332 | /* Check on the restricted use of SUPER */ | |
6333 | if (METHOD_STATIC (current_function_decl) | |
6334 | || current_class == object_type_node) | |
6335 | { | |
6336 | parse_error_context | |
6337 | (wfl, "Keyword `super' used outside allowed context"); | |
6338 | return 1; | |
6339 | } | |
6340 | /* Otherwise, treat SUPER as (SUPER_CLASS)THIS */ | |
6341 | node = build_cast (EXPR_WFL_LINECOL (qual_wfl), | |
6342 | CLASSTYPE_SUPER (current_class), | |
6343 | build_this (EXPR_WFL_LINECOL (qual_wfl))); | |
6344 | *where_found = decl = java_complete_tree (node); | |
22eed1e6 APB |
6345 | if (decl == error_mark_node) |
6346 | return 1; | |
e04a16fb AG |
6347 | *type_found = type = QUAL_DECL_TYPE (decl); |
6348 | from_super = from_type = 1; | |
6349 | continue; | |
6350 | } | |
6351 | ||
6352 | /* 15.13.1: Can't search for field name in packages, so we | |
6353 | assume a variable/class name was meant. */ | |
6354 | if (RESOLVE_PACKAGE_NAME_P (qual_wfl)) | |
6355 | { | |
5e942c50 APB |
6356 | tree name = resolve_package (wfl, &q); |
6357 | if (name) | |
6358 | { | |
6359 | *where_found = decl = resolve_no_layout (name, qual_wfl); | |
6360 | /* We wan't to be absolutely that the class is laid | |
6361 | out. We're going to search something inside it. */ | |
6362 | *type_found = type = TREE_TYPE (decl); | |
6363 | layout_class (type); | |
6364 | from_type = 1; | |
6365 | /* Should be a list, really. FIXME */ | |
6366 | RESOLVE_EXPRESSION_NAME_P (QUAL_WFL (TREE_CHAIN (q))) = 1; | |
6367 | RESOLVE_PACKAGE_NAME_P (QUAL_WFL (TREE_CHAIN (q))) = 0; | |
6368 | } | |
e04a16fb | 6369 | else |
5e942c50 APB |
6370 | { |
6371 | if (from_super || from_cast) | |
6372 | parse_error_context | |
6373 | ((from_cast ? qual_wfl : wfl), | |
6374 | "No variable `%s' defined in class `%s'", | |
6375 | IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)), | |
6376 | lang_printable_name (type, 0)); | |
6377 | else | |
6378 | parse_error_context | |
6379 | (qual_wfl, "Undefined variable or class name: `%s'", | |
6380 | IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl))); | |
6381 | return 1; | |
6382 | } | |
e04a16fb AG |
6383 | } |
6384 | ||
6385 | /* We have a type name. It's been already resolved when the | |
6386 | expression was qualified. */ | |
6387 | else if (RESOLVE_TYPE_NAME_P (qual_wfl)) | |
6388 | { | |
6389 | if (!(decl = QUAL_RESOLUTION (q))) | |
6390 | return 1; /* Error reported already */ | |
6391 | ||
6392 | if (not_accessible_p (TREE_TYPE (decl), decl, 0)) | |
6393 | { | |
6394 | parse_error_context | |
6395 | (qual_wfl, "Can't access %s field `%s.%s' from `%s'", | |
6396 | java_accstring_lookup (get_access_flags_from_decl (decl)), | |
6397 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))), | |
6398 | IDENTIFIER_POINTER (DECL_NAME (decl)), | |
6399 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class)))); | |
6400 | return 1; | |
6401 | } | |
5e942c50 | 6402 | check_deprecation (qual_wfl, decl); |
e04a16fb AG |
6403 | |
6404 | type = TREE_TYPE (decl); | |
6405 | from_type = 1; | |
6406 | } | |
6407 | /* We resolve and expression name */ | |
6408 | else | |
6409 | { | |
6410 | tree field_decl; | |
6411 | ||
6412 | /* If there exists an early resolution, use it. That occurs | |
6413 | only once and we know that there are more things to | |
6414 | come. Don't do that when processing something after SUPER | |
6415 | (we need more thing to be put in place below */ | |
6416 | if (!from_super && QUAL_RESOLUTION (q)) | |
b67d701b PB |
6417 | { |
6418 | decl = QUAL_RESOLUTION (q); | |
c877974e | 6419 | if (!type) |
5e942c50 | 6420 | { |
c877974e APB |
6421 | if (!FIELD_STATIC (decl)) |
6422 | *where_found = current_this; | |
6423 | else | |
6424 | { | |
6425 | *where_found = TREE_TYPE (decl); | |
6426 | if (TREE_CODE (*where_found) == POINTER_TYPE) | |
6427 | *where_found = TREE_TYPE (*where_found); | |
6428 | } | |
5e942c50 | 6429 | } |
b67d701b | 6430 | } |
e04a16fb AG |
6431 | |
6432 | /* We have to search for a field, knowing the type of its | |
6433 | container. The flag FROM_TYPE indicates that we resolved | |
6434 | the last member of the expression as a type name, which | |
5e942c50 APB |
6435 | means that for the resolution of this field, we'll look |
6436 | for other errors than if it was resolved as a member of | |
6437 | an other field. */ | |
e04a16fb AG |
6438 | else |
6439 | { | |
6440 | int is_static; | |
5e942c50 APB |
6441 | tree field_decl_type; /* For layout */ |
6442 | ||
e04a16fb AG |
6443 | if (!from_type && !JREFERENCE_TYPE_P (type)) |
6444 | { | |
6445 | parse_error_context | |
6446 | (qual_wfl, "Attempt to reference field `%s' in `%s %s'", | |
6447 | IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)), | |
0a2138e2 | 6448 | lang_printable_name (type, 0), |
e04a16fb AG |
6449 | IDENTIFIER_POINTER (DECL_NAME (field_decl))); |
6450 | return 1; | |
6451 | } | |
6452 | ||
dc0b3eff PB |
6453 | field_decl = lookup_field_wrapper (type, |
6454 | EXPR_WFL_NODE (qual_wfl)); | |
6455 | if (field_decl == NULL_TREE) | |
e04a16fb AG |
6456 | { |
6457 | parse_error_context | |
6458 | (qual_wfl, "No variable `%s' defined in class `%s'", | |
6459 | IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)), | |
6460 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)))); | |
6461 | return 1; | |
6462 | } | |
dc0b3eff PB |
6463 | if (field_decl == error_mark_node) |
6464 | return 1; | |
5e942c50 APB |
6465 | |
6466 | /* Layout the type of field_decl, since we may need | |
c877974e APB |
6467 | it. Don't do primitive types or loaded classes. The |
6468 | situation of non primitive arrays may not handled | |
6469 | properly here. FIXME */ | |
5e942c50 APB |
6470 | if (TREE_CODE (TREE_TYPE (field_decl)) == POINTER_TYPE) |
6471 | field_decl_type = TREE_TYPE (TREE_TYPE (field_decl)); | |
6472 | else | |
6473 | field_decl_type = TREE_TYPE (field_decl); | |
6474 | if (!JPRIMITIVE_TYPE_P (field_decl_type) | |
c877974e APB |
6475 | && !CLASS_LOADED_P (field_decl_type) |
6476 | && !TYPE_ARRAY_P (field_decl_type)) | |
6477 | resolve_and_layout (field_decl_type, NULL_TREE); | |
6478 | if (TYPE_ARRAY_P (field_decl_type)) | |
6479 | CLASS_LOADED_P (field_decl_type) = 1; | |
e04a16fb AG |
6480 | |
6481 | /* Check on accessibility here */ | |
6482 | if (not_accessible_p (type, field_decl, from_super)) | |
6483 | { | |
6484 | parse_error_context | |
6485 | (qual_wfl, | |
6486 | "Can't access %s field `%s.%s' from `%s'", | |
6487 | java_accstring_lookup | |
6488 | (get_access_flags_from_decl (field_decl)), | |
6489 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))), | |
6490 | IDENTIFIER_POINTER (DECL_NAME (field_decl)), | |
6491 | IDENTIFIER_POINTER | |
6492 | (DECL_NAME (TYPE_NAME (current_class)))); | |
6493 | return 1; | |
6494 | } | |
5e942c50 | 6495 | check_deprecation (qual_wfl, field_decl); |
e04a16fb AG |
6496 | |
6497 | /* There are things to check when fields are accessed | |
6498 | from type. There are no restrictions on a static | |
6499 | declaration of the field when it is accessed from an | |
6500 | interface */ | |
6501 | is_static = FIELD_STATIC (field_decl); | |
6502 | if (!from_super && from_type | |
6503 | && !TYPE_INTERFACE_P (type) && !is_static) | |
6504 | { | |
6505 | parse_error_context | |
6506 | (qual_wfl, "Can't make a static reference to nonstatic " | |
6507 | "variable `%s' in class `%s'", | |
6508 | IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)), | |
6509 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)))); | |
6510 | return 1; | |
6511 | } | |
6512 | from_cast = from_super = 0; | |
6513 | ||
5e942c50 APB |
6514 | /* If we need to generate something to get a proper |
6515 | handle on what this field is accessed from, do it | |
6516 | now. */ | |
e04a16fb AG |
6517 | if (!is_static) |
6518 | { | |
c583dd46 | 6519 | decl = maybe_access_field (decl, *where_found, *type_found); |
e04a16fb AG |
6520 | if (decl == error_mark_node) |
6521 | return 1; | |
6522 | } | |
6523 | ||
6524 | /* We want to keep the location were found it, and the type | |
6525 | we found. */ | |
6526 | *where_found = decl; | |
6527 | *type_found = type; | |
6528 | ||
6529 | /* This is the decl found and eventually the next one to | |
6530 | search from */ | |
6531 | decl = field_decl; | |
6532 | } | |
e04a16fb AG |
6533 | from_type = 0; |
6534 | type = QUAL_DECL_TYPE (decl); | |
6535 | } | |
6536 | } | |
6537 | *found_decl = decl; | |
6538 | return 0; | |
6539 | } | |
6540 | ||
6541 | /* 6.6 Qualified name and access control. Returns 1 if MEMBER (a decl) | |
6542 | can't be accessed from REFERENCE (a record type). */ | |
6543 | ||
6544 | int not_accessible_p (reference, member, from_super) | |
6545 | tree reference, member; | |
6546 | int from_super; | |
6547 | { | |
6548 | int access_flag = get_access_flags_from_decl (member); | |
6549 | ||
6550 | /* Access always granted for members declared public */ | |
6551 | if (access_flag & ACC_PUBLIC) | |
6552 | return 0; | |
6553 | ||
6554 | /* Check access on protected members */ | |
6555 | if (access_flag & ACC_PROTECTED) | |
6556 | { | |
6557 | /* Access granted if it occurs from within the package | |
6558 | containing the class in which the protected member is | |
6559 | declared */ | |
6560 | if (class_in_current_package (DECL_CONTEXT (member))) | |
6561 | return 0; | |
6562 | ||
9bbc7d9f PB |
6563 | /* If accessed with the form `super.member', then access is granted */ |
6564 | if (from_super) | |
6565 | return 0; | |
e04a16fb | 6566 | |
9bbc7d9f PB |
6567 | /* Otherwise, access is granted if occuring from the class where |
6568 | member is declared or a subclass of it */ | |
6569 | if (inherits_from_p (reference, current_class)) | |
6570 | return 0; | |
e04a16fb AG |
6571 | return 1; |
6572 | } | |
6573 | ||
6574 | /* Check access on private members. Access is granted only if it | |
c877974e | 6575 | occurs from within the class in witch it is declared */ |
e04a16fb AG |
6576 | if (access_flag & ACC_PRIVATE) |
6577 | return (current_class == DECL_CONTEXT (member) ? 0 : 1); | |
6578 | ||
6579 | /* Default access are permitted only when occuring within the | |
6580 | package in which the type (REFERENCE) is declared. In other words, | |
6581 | REFERENCE is defined in the current package */ | |
6582 | if (ctxp->package) | |
6583 | return !class_in_current_package (reference); | |
6584 | ||
6585 | /* Otherwise, access is granted */ | |
6586 | return 0; | |
6587 | } | |
6588 | ||
5e942c50 APB |
6589 | /* Test deprecated decl access. */ |
6590 | static void | |
6591 | check_deprecation (wfl, decl) | |
6592 | tree wfl, decl; | |
6593 | { | |
6594 | char *file = DECL_SOURCE_FILE (decl); | |
6595 | /* Complain if the field is deprecated and the file it was defined | |
6596 | in isn't compiled at the same time the file which contains its | |
6597 | use is */ | |
6598 | if (DECL_DEPRECATED (decl) | |
6599 | && !IS_A_COMMAND_LINE_FILENAME_P (get_identifier (file))) | |
6600 | { | |
6601 | char the [20]; | |
6602 | switch (TREE_CODE (decl)) | |
6603 | { | |
6604 | case FUNCTION_DECL: | |
6605 | strcpy (the, "method"); | |
6606 | break; | |
6607 | case FIELD_DECL: | |
6608 | strcpy (the, "field"); | |
6609 | break; | |
6610 | case TYPE_DECL: | |
6611 | strcpy (the, "class"); | |
6612 | break; | |
15fdcfe9 PB |
6613 | default: |
6614 | fatal ("unexpected DECL code - check_deprecation"); | |
5e942c50 APB |
6615 | } |
6616 | parse_warning_context | |
6617 | (wfl, "The %s `%s' in class `%s' has been deprecated", | |
6618 | the, lang_printable_name (decl, 0), | |
6619 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl))))); | |
6620 | } | |
6621 | } | |
6622 | ||
e04a16fb AG |
6623 | /* Returns 1 if class was declared in the current package, 0 otherwise */ |
6624 | ||
6625 | static int | |
6626 | class_in_current_package (class) | |
6627 | tree class; | |
6628 | { | |
6629 | static tree cache = NULL_TREE; | |
6630 | int qualified_flag; | |
6631 | tree left; | |
6632 | ||
6633 | if (cache == class) | |
6634 | return 1; | |
6635 | ||
6636 | qualified_flag = QUALIFIED_P (DECL_NAME (TYPE_NAME (class))); | |
6637 | ||
6638 | /* If the current package is empty and the name of CLASS is | |
6639 | qualified, class isn't in the current package. If there is a | |
6640 | current package and the name of the CLASS is not qualified, class | |
6641 | isn't in the current package */ | |
0a2138e2 | 6642 | if ((!ctxp->package && qualified_flag) || (ctxp->package && !qualified_flag)) |
e04a16fb AG |
6643 | return 0; |
6644 | ||
6645 | /* If there is not package and the name of CLASS isn't qualified, | |
6646 | they belong to the same unnamed package */ | |
6647 | if (!ctxp->package && !qualified_flag) | |
6648 | return 1; | |
6649 | ||
6650 | /* Compare the left part of the name of CLASS with the package name */ | |
6651 | breakdown_qualified (&left, NULL, DECL_NAME (TYPE_NAME (class))); | |
6652 | if (ctxp->package == left) | |
6653 | { | |
6654 | cache = class; | |
6655 | return 1; | |
6656 | } | |
6657 | return 0; | |
6658 | } | |
6659 | ||
6660 | /* This function may generate code to access DECL from WHERE. This is | |
6661 | done only if certain conditions meet. */ | |
6662 | ||
6663 | static tree | |
6664 | maybe_access_field (decl, where, type) | |
6665 | tree decl, where, type; | |
6666 | { | |
5e942c50 APB |
6667 | if (TREE_CODE (decl) == FIELD_DECL && decl != current_this |
6668 | && !FIELD_STATIC (decl)) | |
e04a16fb | 6669 | decl = build_field_ref (where ? where : current_this, |
c583dd46 APB |
6670 | (type ? type : DECL_CONTEXT (decl)), |
6671 | DECL_NAME (decl)); | |
e04a16fb AG |
6672 | return decl; |
6673 | } | |
6674 | ||
15fdcfe9 | 6675 | /* Build a method invocation, by patching PATCH. If non NULL |
e04a16fb AG |
6676 | and according to the situation, PRIMARY and WHERE may be |
6677 | used. IS_STATIC is set to 1 if the invoked function is static. */ | |
6678 | ||
6679 | static tree | |
89e09b9a | 6680 | patch_method_invocation (patch, primary, where, is_static, ret_decl) |
e04a16fb AG |
6681 | tree patch, primary, where; |
6682 | int *is_static; | |
b9f7e36c | 6683 | tree *ret_decl; |
e04a16fb AG |
6684 | { |
6685 | tree wfl = TREE_OPERAND (patch, 0); | |
6686 | tree args = TREE_OPERAND (patch, 1); | |
6687 | tree name = EXPR_WFL_NODE (wfl); | |
5e942c50 | 6688 | tree list; |
22eed1e6 | 6689 | int is_static_flag = 0; |
89e09b9a | 6690 | int is_super_init = 0; |
bccaf73a | 6691 | tree this_arg = NULL_TREE; |
e04a16fb AG |
6692 | |
6693 | /* Should be overriden if everything goes well. Otherwise, if | |
6694 | something fails, it should keep this value. It stop the | |
6695 | evaluation of a bogus assignment. See java_complete_tree, | |
6696 | MODIFY_EXPR: for the reasons why we sometimes want to keep on | |
6697 | evaluating an assignment */ | |
6698 | TREE_TYPE (patch) = error_mark_node; | |
6699 | ||
6700 | /* Since lookup functions are messing with line numbers, save the | |
6701 | context now. */ | |
6702 | java_parser_context_save_global (); | |
6703 | ||
6704 | /* 15.11.1: Compile-Time Step 1: Determine Class or Interface to Search */ | |
6705 | ||
6706 | /* Resolution of qualified name, excluding constructors */ | |
6707 | if (QUALIFIED_P (name) && !CALL_CONSTRUCTOR_P (patch)) | |
6708 | { | |
6709 | tree class_decl, identifier, identifier_wfl; | |
6710 | /* Extract the last IDENTIFIER of the qualified | |
6711 | expression. This is a wfl and we will use it's location | |
6712 | data during error report. */ | |
6713 | identifier_wfl = cut_identifier_in_qualified (wfl); | |
6714 | identifier = EXPR_WFL_NODE (identifier_wfl); | |
6715 | ||
6716 | /* Given the context, IDENTIFIER is syntactically qualified | |
6717 | as a MethodName. We need to qualify what's before */ | |
6718 | qualify_ambiguous_name (wfl); | |
6719 | ||
6720 | /* Package resolution are erroneous */ | |
6721 | if (RESOLVE_PACKAGE_NAME_P (wfl)) | |
6722 | { | |
6723 | tree remainder; | |
6724 | breakdown_qualified (&remainder, NULL, EXPR_WFL_NODE (wfl)); | |
6725 | parse_error_context (wfl, "Can't search method `%s' in package " | |
6726 | "`%s'",IDENTIFIER_POINTER (identifier), | |
6727 | IDENTIFIER_POINTER (remainder)); | |
b9f7e36c | 6728 | PATCH_METHOD_RETURN_ERROR (); |
e04a16fb AG |
6729 | } |
6730 | /* We're resolving a call from a type */ | |
6731 | else if (RESOLVE_TYPE_NAME_P (wfl)) | |
6732 | { | |
6733 | tree decl = QUAL_RESOLUTION (EXPR_WFL_QUALIFICATION (wfl)); | |
6734 | tree name = DECL_NAME (decl); | |
6735 | tree type; | |
6736 | ||
6737 | class_decl = resolve_and_layout (name, wfl); | |
6738 | if (CLASS_INTERFACE (decl)) | |
6739 | { | |
6740 | parse_error_context | |
6741 | (identifier_wfl, "Can't make static reference to method " | |
6742 | "`%s' in interface `%s'", IDENTIFIER_POINTER (identifier), | |
6743 | IDENTIFIER_POINTER (name)); | |
b9f7e36c | 6744 | PATCH_METHOD_RETURN_ERROR (); |
e04a16fb AG |
6745 | } |
6746 | /* Look the method up in the type selector. The method ought | |
6747 | to be static. */ | |
6748 | type = TREE_TYPE (class_decl); | |
6749 | list = lookup_method_invoke (0, wfl, type, identifier, args); | |
6750 | if (list && !METHOD_STATIC (list)) | |
6751 | { | |
0a2138e2 | 6752 | char *fct_name = strdup (lang_printable_name (list, 0)); |
e04a16fb AG |
6753 | parse_error_context |
6754 | (identifier_wfl, | |
6755 | "Can't make static reference to method `%s %s' in class `%s'", | |
0a2138e2 APB |
6756 | lang_printable_name (TREE_TYPE (TREE_TYPE (list)), 0), |
6757 | fct_name, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type)))); | |
e04a16fb | 6758 | free (fct_name); |
b9f7e36c | 6759 | PATCH_METHOD_RETURN_ERROR (); |
e04a16fb | 6760 | } |
5e942c50 | 6761 | args = nreverse (args); |
e04a16fb AG |
6762 | } |
6763 | /* We're resolving an expression name */ | |
6764 | else | |
6765 | { | |
6766 | tree field, type; | |
6767 | ||
6768 | /* 1- Find the field to which the call applies */ | |
6769 | field = resolve_field_access (wfl, NULL, &type); | |
6770 | if (field == error_mark_node) | |
b9f7e36c | 6771 | PATCH_METHOD_RETURN_ERROR (); |
c3f2a476 APB |
6772 | /* field is used in lieu of a primary. It alows us not to |
6773 | report errors on erroneous use of `this' in | |
6774 | constructors. */ | |
6775 | primary = field; | |
e04a16fb AG |
6776 | |
6777 | /* 2- Do the layout of the class where the last field | |
6778 | was found, so we can search it. */ | |
c877974e | 6779 | class_decl = resolve_and_layout (type, NULL_TREE); |
3e78f871 | 6780 | if (class_decl != NULL_TREE) |
c877974e APB |
6781 | type = TREE_TYPE (class_decl); |
6782 | ||
e04a16fb AG |
6783 | /* 3- Retrieve a filtered list of method matches, Refine |
6784 | if necessary. In any cases, point out errors. */ | |
6785 | list = lookup_method_invoke (0, identifier_wfl, type, | |
6786 | identifier, args); | |
6787 | ||
6788 | /* 4- Add the field as an argument */ | |
bccaf73a PB |
6789 | args = nreverse (args); |
6790 | this_arg = field; | |
e04a16fb AG |
6791 | } |
6792 | ||
5e942c50 | 6793 | /* IDENTIFIER_WFL will be used to report any problem further */ |
e04a16fb AG |
6794 | wfl = identifier_wfl; |
6795 | } | |
6796 | /* Resolution of simple names, names generated after a primary: or | |
6797 | constructors */ | |
6798 | else | |
6799 | { | |
6800 | tree class_to_search; | |
6801 | int lc; /* Looking for Constructor */ | |
6802 | ||
6803 | /* We search constructor in their target class */ | |
6804 | if (CALL_CONSTRUCTOR_P (patch)) | |
6805 | { | |
22eed1e6 APB |
6806 | if (TREE_CODE (patch) == NEW_CLASS_EXPR) |
6807 | class_to_search = EXPR_WFL_NODE (wfl); | |
6808 | else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) == | |
6809 | this_identifier_node) | |
6810 | class_to_search = NULL_TREE; | |
6811 | else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) == | |
6812 | super_identifier_node) | |
e04a16fb | 6813 | { |
89e09b9a | 6814 | is_super_init = 1; |
22eed1e6 APB |
6815 | if (CLASSTYPE_SUPER (current_class)) |
6816 | class_to_search = | |
6817 | DECL_NAME (TYPE_NAME (CLASSTYPE_SUPER (current_class))); | |
6818 | else | |
6819 | { | |
6820 | parse_error_context (wfl, "Can't invoke super constructor " | |
6821 | "on java.lang.Object"); | |
6822 | PATCH_METHOD_RETURN_ERROR (); | |
6823 | } | |
e04a16fb | 6824 | } |
22eed1e6 APB |
6825 | |
6826 | /* Class to search is NULL if we're searching the current one */ | |
6827 | if (class_to_search) | |
e04a16fb | 6828 | { |
23a79c61 APB |
6829 | class_to_search = resolve_and_layout (class_to_search, |
6830 | NULL_TREE); | |
22eed1e6 APB |
6831 | if (!class_to_search) |
6832 | { | |
6833 | parse_error_context | |
6834 | (wfl, "Class `%s' not found in type declaration", | |
6835 | IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl))); | |
6836 | PATCH_METHOD_RETURN_ERROR (); | |
6837 | } | |
6838 | ||
5e942c50 APB |
6839 | /* Can't instantiate an abstract class, but we can |
6840 | invoke it's constructor. It's use within the `new' | |
6841 | context is denied here. */ | |
6842 | if (CLASS_ABSTRACT (class_to_search) | |
6843 | && TREE_CODE (patch) == NEW_CLASS_EXPR) | |
22eed1e6 APB |
6844 | { |
6845 | parse_error_context | |
6846 | (wfl, "Class `%s' is an abstract class. It can't be " | |
6847 | "instantiated", IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl))); | |
6848 | PATCH_METHOD_RETURN_ERROR (); | |
6849 | } | |
6850 | class_to_search = TREE_TYPE (class_to_search); | |
e04a16fb | 6851 | } |
22eed1e6 APB |
6852 | else |
6853 | class_to_search = current_class; | |
e04a16fb AG |
6854 | lc = 1; |
6855 | } | |
6856 | /* This is a regular search in the local class, unless an | |
6857 | alternate class is specified. */ | |
6858 | else | |
6859 | { | |
6860 | class_to_search = (where ? where : current_class); | |
6861 | lc = 0; | |
6862 | } | |
6863 | ||
6864 | /* NAME is a simple identifier or comes from a primary. Search | |
6865 | in the class whose declaration contain the method being | |
6866 | invoked. */ | |
c877974e | 6867 | resolve_and_layout (class_to_search, NULL_TREE); |
e04a16fb AG |
6868 | list = lookup_method_invoke (lc, wfl, class_to_search, name, args); |
6869 | ||
6870 | /* Don't continue if no method were found, as the next statement | |
6871 | can't be executed then. */ | |
b9f7e36c APB |
6872 | if (!list) |
6873 | PATCH_METHOD_RETURN_ERROR (); | |
e04a16fb AG |
6874 | |
6875 | /* Check for static reference if non static methods */ | |
6876 | if (check_for_static_method_reference (wfl, patch, list, | |
6877 | class_to_search, primary)) | |
b9f7e36c | 6878 | PATCH_METHOD_RETURN_ERROR (); |
e04a16fb | 6879 | |
22eed1e6 APB |
6880 | /* Non static methods are called with the current object extra |
6881 | argument. If patch a `new TYPE()', the argument is the value | |
6882 | returned by the object allocator. If method is resolved as a | |
6883 | primary, use the primary otherwise use the current THIS. */ | |
b9f7e36c | 6884 | args = nreverse (args); |
bccaf73a PB |
6885 | if (TREE_CODE (patch) != NEW_CLASS_EXPR) |
6886 | this_arg = primary ? primary : current_this; | |
e04a16fb | 6887 | } |
b67d701b | 6888 | |
e04a16fb AG |
6889 | /* Merge point of all resolution schemes. If we have nothing, this |
6890 | is an error, already signaled */ | |
b9f7e36c APB |
6891 | if (!list) |
6892 | PATCH_METHOD_RETURN_ERROR (); | |
b67d701b | 6893 | |
e04a16fb AG |
6894 | /* Check accessibility, position the is_static flag, build and |
6895 | return the call */ | |
9bbc7d9f | 6896 | if (not_accessible_p (DECL_CONTEXT (current_function_decl), list, 0)) |
e04a16fb | 6897 | { |
0a2138e2 | 6898 | char *fct_name = strdup (lang_printable_name (list, 0)); |
e04a16fb AG |
6899 | parse_error_context |
6900 | (wfl, "Can't access %s method `%s %s.%s' from `%s'", | |
6901 | java_accstring_lookup (get_access_flags_from_decl (list)), | |
0a2138e2 | 6902 | lang_printable_name (TREE_TYPE (TREE_TYPE (list)), 0), |
5e942c50 APB |
6903 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (list)))), |
6904 | fct_name, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class)))); | |
e04a16fb | 6905 | free (fct_name); |
b9f7e36c | 6906 | PATCH_METHOD_RETURN_ERROR (); |
e04a16fb | 6907 | } |
5e942c50 | 6908 | check_deprecation (wfl, list); |
22eed1e6 APB |
6909 | |
6910 | is_static_flag = METHOD_STATIC (list); | |
bccaf73a PB |
6911 | if (! METHOD_STATIC (list) && this_arg != NULL_TREE) |
6912 | args = tree_cons (NULL_TREE, this_arg, args); | |
22eed1e6 | 6913 | |
c3f2a476 APB |
6914 | /* In the context of an explicit constructor invocation, we can't |
6915 | invoke any method relying on `this'. Exceptions are: we're | |
6916 | invoking a static function, primary exists and is not the current | |
6917 | this, we're creating a new object. */ | |
22eed1e6 | 6918 | if (ctxp->explicit_constructor_p |
c3f2a476 APB |
6919 | && !is_static_flag |
6920 | && (!primary || primary == current_this) | |
6921 | && (TREE_CODE (patch) != NEW_CLASS_EXPR)) | |
22eed1e6 APB |
6922 | { |
6923 | parse_error_context | |
6924 | (wfl, "Can't reference `this' before the superclass constructor has " | |
6925 | "been called"); | |
6926 | PATCH_METHOD_RETURN_ERROR (); | |
6927 | } | |
e04a16fb | 6928 | java_parser_context_restore_global (); |
22eed1e6 APB |
6929 | if (is_static) |
6930 | *is_static = is_static_flag; | |
b9f7e36c APB |
6931 | /* Sometimes, we want the decl of the selected method. Such as for |
6932 | EH checking */ | |
6933 | if (ret_decl) | |
6934 | *ret_decl = list; | |
89e09b9a PB |
6935 | patch = patch_invoke (patch, list, args); |
6936 | if (is_super_init && CLASS_HAS_FINIT_P (current_class)) | |
6937 | { | |
6938 | /* Generate the code used to initialize fields declared with an | |
6939 | initialization statement. For now, it returns a call the the | |
6940 | artificial function $finit$, if required. */ | |
6941 | ||
6942 | tree finit_call = | |
6943 | build_method_invocation (build_expr_wfl (finit_identifier_node, | |
6944 | input_filename, 0, 0), | |
6945 | NULL_TREE); | |
6946 | patch = build (COMPOUND_EXPR, void_type_node, patch, | |
6947 | java_complete_tree (finit_call)); | |
6948 | CAN_COMPLETE_NORMALLY (patch) = 1; | |
6949 | } | |
6950 | return patch; | |
e04a16fb AG |
6951 | } |
6952 | ||
6953 | /* Check that we're not trying to do a static reference to a method in | |
6954 | non static method. Return 1 if it's the case, 0 otherwise. */ | |
6955 | ||
6956 | static int | |
6957 | check_for_static_method_reference (wfl, node, method, where, primary) | |
6958 | tree wfl, node, method, where, primary; | |
6959 | { | |
6960 | if (METHOD_STATIC (current_function_decl) | |
6961 | && !METHOD_STATIC (method) && !primary && !CALL_CONSTRUCTOR_P (node)) | |
6962 | { | |
0a2138e2 | 6963 | char *fct_name = strdup (lang_printable_name (method, 0)); |
e04a16fb AG |
6964 | parse_error_context |
6965 | (wfl, "Can't make static reference to method `%s %s' in class `%s'", | |
0a2138e2 | 6966 | lang_printable_name (TREE_TYPE (TREE_TYPE (method)), 0), fct_name, |
e04a16fb AG |
6967 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (where)))); |
6968 | free (fct_name); | |
6969 | return 1; | |
6970 | } | |
6971 | return 0; | |
6972 | } | |
6973 | ||
6974 | /* Patch an invoke expression METHOD and ARGS, based on its invocation | |
6975 | mode. */ | |
6976 | ||
6977 | static tree | |
89e09b9a | 6978 | patch_invoke (patch, method, args) |
e04a16fb | 6979 | tree patch, method, args; |
e04a16fb AG |
6980 | { |
6981 | tree dtable, func; | |
0a2138e2 | 6982 | tree original_call, t, ta; |
e04a16fb | 6983 | |
5e942c50 APB |
6984 | /* Last step for args: convert build-in types. If we're dealing with |
6985 | a new TYPE() type call, the first argument to the constructor | |
6986 | isn't found in the incomming argument list, but delivered by | |
6987 | `new' */ | |
6988 | t = TYPE_ARG_TYPES (TREE_TYPE (method)); | |
6989 | if (TREE_CODE (patch) == NEW_CLASS_EXPR) | |
6990 | t = TREE_CHAIN (t); | |
ac825856 APB |
6991 | for (ta = args; t != end_params_node && ta; |
6992 | t = TREE_CHAIN (t), ta = TREE_CHAIN (ta)) | |
b9f7e36c APB |
6993 | if (JPRIMITIVE_TYPE_P (TREE_TYPE (TREE_VALUE (ta))) && |
6994 | TREE_TYPE (TREE_VALUE (ta)) != TREE_VALUE (t)) | |
6995 | TREE_VALUE (ta) = convert (TREE_VALUE (t), TREE_VALUE (ta)); | |
22eed1e6 | 6996 | |
15fdcfe9 PB |
6997 | if (flag_emit_class_files) |
6998 | func = method; | |
6999 | else | |
e04a16fb | 7000 | { |
15fdcfe9 | 7001 | tree signature = build_java_signature (TREE_TYPE (method)); |
89e09b9a | 7002 | switch (invocation_mode (method, CALL_USING_SUPER (patch))) |
15fdcfe9 PB |
7003 | { |
7004 | case INVOKE_VIRTUAL: | |
7005 | dtable = invoke_build_dtable (0, args); | |
7006 | func = build_invokevirtual (dtable, method); | |
7007 | break; | |
b9f7e36c | 7008 | |
15fdcfe9 PB |
7009 | case INVOKE_SUPER: |
7010 | case INVOKE_STATIC: | |
7011 | func = build_known_method_ref (method, TREE_TYPE (method), | |
7012 | DECL_CONTEXT (method), | |
7013 | signature, args); | |
7014 | break; | |
e04a16fb | 7015 | |
15fdcfe9 PB |
7016 | case INVOKE_INTERFACE: |
7017 | dtable = invoke_build_dtable (1, args); | |
7018 | func = build_invokeinterface (dtable, DECL_NAME (method), signature); | |
7019 | break; | |
5e942c50 | 7020 | |
15fdcfe9 | 7021 | default: |
89e09b9a | 7022 | fatal ("internal error - unknown invocation_mode result"); |
15fdcfe9 PB |
7023 | } |
7024 | ||
7025 | /* Ensure self_type is initialized, (invokestatic). FIXME */ | |
7026 | func = build1 (NOP_EXPR, build_pointer_type (TREE_TYPE (method)), func); | |
e04a16fb AG |
7027 | } |
7028 | ||
e04a16fb AG |
7029 | TREE_TYPE (patch) = TREE_TYPE (TREE_TYPE (method)); |
7030 | TREE_OPERAND (patch, 0) = func; | |
7031 | TREE_OPERAND (patch, 1) = args; | |
7032 | original_call = patch; | |
7033 | ||
22eed1e6 APB |
7034 | /* We're processing a `new TYPE ()' form. New is called an its |
7035 | returned value is the first argument to the constructor. We build | |
7036 | a COMPOUND_EXPR and use saved expression so that the overall NEW | |
7037 | expression value is a pointer to a newly created and initialized | |
7038 | class. */ | |
7039 | if (TREE_CODE (original_call) == NEW_CLASS_EXPR) | |
e04a16fb AG |
7040 | { |
7041 | tree class = DECL_CONTEXT (method); | |
7042 | tree c1, saved_new, size, new; | |
15fdcfe9 PB |
7043 | if (flag_emit_class_files) |
7044 | { | |
7045 | TREE_TYPE (patch) = build_pointer_type (class); | |
7046 | return patch; | |
7047 | } | |
e04a16fb AG |
7048 | if (!TYPE_SIZE (class)) |
7049 | safe_layout_class (class); | |
7050 | size = size_in_bytes (class); | |
7051 | new = build (CALL_EXPR, promote_type (class), | |
7052 | build_address_of (alloc_object_node), | |
7053 | tree_cons (NULL_TREE, build_class_ref (class), | |
7054 | build_tree_list (NULL_TREE, | |
7055 | size_in_bytes (class))), | |
7056 | NULL_TREE); | |
7057 | saved_new = save_expr (new); | |
7058 | c1 = build_tree_list (NULL_TREE, saved_new); | |
7059 | TREE_CHAIN (c1) = TREE_OPERAND (original_call, 1); | |
7060 | TREE_OPERAND (original_call, 1) = c1; | |
7061 | TREE_SET_CODE (original_call, CALL_EXPR); | |
7062 | patch = build (COMPOUND_EXPR, TREE_TYPE (new), patch, saved_new); | |
7063 | } | |
7064 | return patch; | |
7065 | } | |
7066 | ||
7067 | static int | |
7068 | invocation_mode (method, super) | |
7069 | tree method; | |
7070 | int super; | |
7071 | { | |
7072 | int access = get_access_flags_from_decl (method); | |
7073 | ||
22eed1e6 APB |
7074 | if (super) |
7075 | return INVOKE_SUPER; | |
7076 | ||
82371d41 | 7077 | if (access & ACC_STATIC || access & ACC_FINAL || access & ACC_PRIVATE) |
e04a16fb AG |
7078 | return INVOKE_STATIC; |
7079 | ||
7080 | if (CLASS_FINAL (TYPE_NAME (DECL_CONTEXT (method)))) | |
7081 | return INVOKE_STATIC; | |
7082 | ||
e04a16fb AG |
7083 | if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method)))) |
7084 | return INVOKE_INTERFACE; | |
7085 | ||
7086 | if (DECL_CONSTRUCTOR_P (method)) | |
7087 | return INVOKE_STATIC; | |
22eed1e6 | 7088 | |
e04a16fb AG |
7089 | return INVOKE_VIRTUAL; |
7090 | } | |
7091 | ||
b67d701b PB |
7092 | /* Retrieve a refined list of matching methods. It covers the step |
7093 | 15.11.2 (Compile-Time Step 2) */ | |
e04a16fb AG |
7094 | |
7095 | static tree | |
7096 | lookup_method_invoke (lc, cl, class, name, arg_list) | |
7097 | int lc; | |
7098 | tree cl; | |
7099 | tree class, name, arg_list; | |
7100 | { | |
de4c7b02 | 7101 | tree atl = end_params_node; /* Arg Type List */ |
c877974e | 7102 | tree method, signature, list, node; |
b67d701b | 7103 | char *candidates; /* Used for error report */ |
e04a16fb | 7104 | |
5e942c50 | 7105 | /* Fix the arguments */ |
e04a16fb AG |
7106 | for (node = arg_list; node; node = TREE_CHAIN (node)) |
7107 | { | |
e3884b71 | 7108 | tree current_arg = TREE_TYPE (TREE_VALUE (node)); |
c877974e | 7109 | /* Non primitive type may have to be resolved */ |
e3884b71 | 7110 | if (!JPRIMITIVE_TYPE_P (current_arg)) |
c877974e APB |
7111 | resolve_and_layout (current_arg, NULL_TREE); |
7112 | /* And promoted */ | |
b67d701b | 7113 | if (TREE_CODE (current_arg) == RECORD_TYPE) |
c877974e | 7114 | current_arg = promote_type (current_arg); |
5e942c50 | 7115 | atl = tree_cons (NULL_TREE, current_arg, atl); |
e04a16fb | 7116 | } |
e04a16fb | 7117 | |
5e942c50 APB |
7118 | /* Find all candidates and then refine the list, searching for the |
7119 | most specific method. */ | |
7120 | list = find_applicable_accessible_methods_list (lc, class, name, atl); | |
7121 | list = find_most_specific_methods_list (list); | |
b67d701b PB |
7122 | if (list && !TREE_CHAIN (list)) |
7123 | return TREE_VALUE (list); | |
e04a16fb | 7124 | |
b67d701b PB |
7125 | /* Issue an error. List candidates if any. Candidates are listed |
7126 | only if accessible (non accessible methods may end-up here for | |
7127 | the sake of a better error report). */ | |
7128 | candidates = NULL; | |
7129 | if (list) | |
e04a16fb | 7130 | { |
e04a16fb | 7131 | tree current; |
b67d701b | 7132 | obstack_grow (&temporary_obstack, ". Candidates are:\n", 18); |
e04a16fb AG |
7133 | for (current = list; current; current = TREE_CHAIN (current)) |
7134 | { | |
b67d701b PB |
7135 | tree cm = TREE_VALUE (current); |
7136 | char string [4096]; | |
7137 | if (!cm || not_accessible_p (class, cm, 0)) | |
7138 | continue; | |
b67d701b | 7139 | sprintf |
22eed1e6 APB |
7140 | (string, " `%s' in `%s'%s", |
7141 | get_printable_method_name (cm), | |
b67d701b PB |
7142 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (cm)))), |
7143 | (TREE_CHAIN (current) ? "\n" : "")); | |
7144 | obstack_grow (&temporary_obstack, string, strlen (string)); | |
7145 | } | |
7146 | obstack_1grow (&temporary_obstack, '\0'); | |
7147 | candidates = obstack_finish (&temporary_obstack); | |
7148 | } | |
7149 | /* Issue the error message */ | |
c877974e APB |
7150 | method = make_node (FUNCTION_TYPE); |
7151 | TYPE_ARG_TYPES (method) = atl; | |
b67d701b | 7152 | signature = build_java_argument_signature (method); |
22eed1e6 APB |
7153 | parse_error_context (cl, "Can't find %s `%s(%s)' in class `%s'%s", |
7154 | (lc ? "constructor" : "method"), | |
7155 | (lc ? | |
7156 | IDENTIFIER_POINTER(DECL_NAME (TYPE_NAME (class))) : | |
7157 | IDENTIFIER_POINTER (name)), | |
b67d701b PB |
7158 | IDENTIFIER_POINTER (signature), |
7159 | IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (class))), | |
7160 | (candidates ? candidates : "")); | |
7161 | return NULL_TREE; | |
7162 | } | |
7163 | ||
5e942c50 APB |
7164 | /* 15.11.2.1: Find Methods that are Applicable and Accessible. LC is 1 |
7165 | when we're looking for a constructor. */ | |
b67d701b PB |
7166 | |
7167 | static tree | |
5e942c50 APB |
7168 | find_applicable_accessible_methods_list (lc, class, name, arglist) |
7169 | int lc; | |
b67d701b PB |
7170 | tree class, name, arglist; |
7171 | { | |
7172 | tree method; | |
7173 | tree list = NULL_TREE, all_list = NULL_TREE; | |
7174 | ||
7175 | while (class != NULL_TREE) | |
7176 | { | |
7177 | for (method = TYPE_METHODS (class); | |
7178 | method != NULL_TREE; method = TREE_CHAIN (method)) | |
7179 | { | |
5e942c50 | 7180 | if (lc && !DECL_CONSTRUCTOR_P (method)) |
b67d701b | 7181 | continue; |
5e942c50 | 7182 | else if (!lc && (DECL_CONSTRUCTOR_P (method) |
c877974e | 7183 | || (GET_METHOD_NAME (method) != name))) |
5e942c50 APB |
7184 | continue; |
7185 | ||
b67d701b | 7186 | if (argument_types_convertible (method, arglist)) |
e04a16fb | 7187 | { |
b67d701b | 7188 | /* Retain accessible methods only */ |
c877974e APB |
7189 | if (!not_accessible_p (DECL_CONTEXT (current_function_decl), |
7190 | method, 0)) | |
b67d701b PB |
7191 | list = tree_cons (NULL_TREE, method, list); |
7192 | else | |
7193 | /* Also retain all selected method here */ | |
7194 | all_list = tree_cons (NULL_TREE, method, list); | |
e04a16fb AG |
7195 | } |
7196 | } | |
5e942c50 APB |
7197 | /* When dealing with constructor, stop here, otherwise search |
7198 | other classes */ | |
7199 | class = (lc ? NULL_TREE : CLASSTYPE_SUPER (class)); | |
e04a16fb | 7200 | } |
b67d701b PB |
7201 | /* Either return the list obtained or all selected (but |
7202 | inaccessible) methods for better error report. */ | |
7203 | return (!list ? all_list : list); | |
7204 | } | |
e04a16fb | 7205 | |
b67d701b PB |
7206 | /* 15.11.2.2 Choose the Most Specific Method */ |
7207 | ||
7208 | static tree | |
7209 | find_most_specific_methods_list (list) | |
7210 | tree list; | |
7211 | { | |
7212 | int max = 0; | |
7213 | tree current, new_list = NULL_TREE; | |
7214 | for (current = list; current; current = TREE_CHAIN (current)) | |
e04a16fb | 7215 | { |
b67d701b PB |
7216 | tree method; |
7217 | DECL_SPECIFIC_COUNT (TREE_VALUE (current)) = 0; | |
7218 | ||
7219 | for (method = list; method; method = TREE_CHAIN (method)) | |
7220 | { | |
7221 | /* Don't test a method against itself */ | |
7222 | if (method == current) | |
7223 | continue; | |
7224 | ||
7225 | /* Compare arguments and location where method where declared */ | |
7226 | if (argument_types_convertible (TREE_VALUE (method), | |
7227 | TREE_VALUE (current)) | |
7228 | && valid_method_invocation_conversion_p | |
7229 | (DECL_CONTEXT (TREE_VALUE (method)), | |
7230 | DECL_CONTEXT (TREE_VALUE (current)))) | |
7231 | { | |
7232 | int v = ++DECL_SPECIFIC_COUNT (TREE_VALUE (current)); | |
7233 | max = (v > max ? v : max); | |
7234 | } | |
7235 | } | |
e04a16fb AG |
7236 | } |
7237 | ||
b67d701b PB |
7238 | /* Review the list and select the maximally specific methods */ |
7239 | for (current = list; current; current = TREE_CHAIN (current)) | |
7240 | if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max) | |
7241 | new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list); | |
7242 | ||
7243 | /* If we can't find one, lower expectations and try to gather multiple | |
7244 | maximally specific methods */ | |
7245 | while (!new_list) | |
7246 | { | |
7247 | while (--max > 0) | |
7248 | { | |
7249 | if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max) | |
7250 | new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list); | |
7251 | } | |
7252 | return new_list; | |
7253 | } | |
7254 | ||
7255 | return new_list; | |
e04a16fb AG |
7256 | } |
7257 | ||
b67d701b PB |
7258 | /* Make sure that the type of each M2_OR_ARGLIST arguments can be |
7259 | converted by method invocation conversion (5.3) to the type of the | |
7260 | corresponding parameter of M1. Implementation expects M2_OR_ARGLIST | |
7261 | to change less often than M1. */ | |
e04a16fb | 7262 | |
b67d701b PB |
7263 | static int |
7264 | argument_types_convertible (m1, m2_or_arglist) | |
7265 | tree m1, m2_or_arglist; | |
e04a16fb | 7266 | { |
b67d701b PB |
7267 | static tree m2_arg_value = NULL_TREE; |
7268 | static tree m2_arg_cache = NULL_TREE; | |
e04a16fb | 7269 | |
b67d701b | 7270 | register tree m1_arg, m2_arg; |
e04a16fb | 7271 | |
b67d701b PB |
7272 | m1_arg = TYPE_ARG_TYPES (TREE_TYPE (m1)); |
7273 | if (!METHOD_STATIC (m1)) | |
7274 | m1_arg = TREE_CHAIN (m1_arg); | |
e04a16fb | 7275 | |
b67d701b PB |
7276 | if (m2_arg_value == m2_or_arglist) |
7277 | m2_arg = m2_arg_cache; | |
7278 | else | |
7279 | { | |
7280 | /* M2_OR_ARGLIST can be a function DECL or a raw list of | |
7281 | argument types */ | |
7282 | if (m2_or_arglist && TREE_CODE (m2_or_arglist) == FUNCTION_DECL) | |
7283 | { | |
7284 | m2_arg = TYPE_ARG_TYPES (TREE_TYPE (m2_or_arglist)); | |
7285 | if (!METHOD_STATIC (m2_or_arglist)) | |
7286 | m2_arg = TREE_CHAIN (m2_arg); | |
7287 | } | |
7288 | else | |
7289 | m2_arg = m2_or_arglist; | |
e04a16fb | 7290 | |
b67d701b PB |
7291 | m2_arg_value = m2_or_arglist; |
7292 | m2_arg_cache = m2_arg; | |
7293 | } | |
e04a16fb | 7294 | |
de4c7b02 | 7295 | while (m1_arg != end_params_node && m2_arg != end_params_node) |
b67d701b | 7296 | { |
c877974e | 7297 | resolve_and_layout (TREE_VALUE (m1_arg), NULL_TREE); |
b67d701b PB |
7298 | if (!valid_method_invocation_conversion_p (TREE_VALUE (m1_arg), |
7299 | TREE_VALUE (m2_arg))) | |
7300 | break; | |
7301 | m1_arg = TREE_CHAIN (m1_arg); | |
7302 | m2_arg = TREE_CHAIN (m2_arg); | |
e04a16fb | 7303 | } |
de4c7b02 | 7304 | return m1_arg == end_params_node && m2_arg == end_params_node; |
e04a16fb AG |
7305 | } |
7306 | ||
7307 | /* Qualification routines */ | |
7308 | ||
7309 | static void | |
7310 | qualify_ambiguous_name (id) | |
7311 | tree id; | |
7312 | { | |
7313 | tree qual, qual_wfl, name, decl, ptr_type, saved_current_class; | |
d8fccff5 | 7314 | int again, super_found = 0, this_found = 0, new_array_found = 0; |
e04a16fb AG |
7315 | |
7316 | /* We first qualify the first element, then derive qualification of | |
7317 | others based on the first one. If the first element is qualified | |
7318 | by a resolution (field or type), this resolution is stored in the | |
7319 | QUAL_RESOLUTION of the qual element being examined. We need to | |
7320 | save the current_class since the use of SUPER might change the | |
7321 | its value. */ | |
7322 | saved_current_class = current_class; | |
7323 | qual = EXPR_WFL_QUALIFICATION (id); | |
7324 | do { | |
7325 | ||
7326 | /* Simple qualified expression feature a qual_wfl that is a | |
7327 | WFL. Expression derived from a primary feature more complicated | |
7328 | things like a CALL_EXPR. Expression from primary need to be | |
7329 | worked out to extract the part on which the qualification will | |
7330 | take place. */ | |
7331 | qual_wfl = QUAL_WFL (qual); | |
7332 | switch (TREE_CODE (qual_wfl)) | |
7333 | { | |
7334 | case CALL_EXPR: | |
7335 | qual_wfl = TREE_OPERAND (qual_wfl, 0); | |
7336 | if (TREE_CODE (qual_wfl) != EXPR_WITH_FILE_LOCATION) | |
7337 | { | |
7338 | qual = EXPR_WFL_QUALIFICATION (qual_wfl); | |
7339 | qual_wfl = QUAL_WFL (qual); | |
7340 | } | |
7341 | break; | |
d8fccff5 APB |
7342 | case NEW_ARRAY_EXPR: |
7343 | qual = TREE_CHAIN (qual); | |
7344 | new_array_found = again = 1; | |
7345 | continue; | |
b67d701b | 7346 | case NEW_CLASS_EXPR: |
e04a16fb | 7347 | case CONVERT_EXPR: |
e04a16fb AG |
7348 | qual_wfl = TREE_OPERAND (qual_wfl, 0); |
7349 | break; | |
c583dd46 APB |
7350 | case ARRAY_REF: |
7351 | while (TREE_CODE (qual_wfl) == ARRAY_REF) | |
7352 | qual_wfl = TREE_OPERAND (qual_wfl, 0); | |
7353 | break; | |
0a2138e2 APB |
7354 | default: |
7355 | /* Fix for -Wall. Just break doing nothing */ | |
7356 | break; | |
e04a16fb AG |
7357 | } |
7358 | name = EXPR_WFL_NODE (qual_wfl); | |
7359 | ptr_type = current_class; | |
7360 | again = 0; | |
7361 | /* If we have a THIS (from a primary), we set the context accordingly */ | |
7362 | if (name == this_identifier_node) | |
7363 | { | |
7364 | qual = TREE_CHAIN (qual); | |
7365 | qual_wfl = QUAL_WFL (qual); | |
22eed1e6 APB |
7366 | if (TREE_CODE (qual_wfl) == CALL_EXPR) |
7367 | again = 1; | |
7368 | else | |
7369 | name = EXPR_WFL_NODE (qual_wfl); | |
e04a16fb AG |
7370 | this_found = 1; |
7371 | } | |
7372 | /* If we have a SUPER, we set the context accordingly */ | |
7373 | if (name == super_identifier_node) | |
7374 | { | |
7375 | current_class = CLASSTYPE_SUPER (ptr_type); | |
7376 | /* Check that there is such a thing as a super class. If not, | |
7377 | return. The error will be caught later on, during the | |
7378 | resolution */ | |
7379 | if (!current_class) | |
7380 | { | |
7381 | current_class = saved_current_class; | |
7382 | return; | |
7383 | } | |
7384 | qual = TREE_CHAIN (qual); | |
7385 | /* Do one more interation to set things up */ | |
7386 | super_found = again = 1; | |
7387 | } | |
09ed0f70 APB |
7388 | /* Loop one more time if we're dealing with ?: or a string |
7389 | constant, or a convert expression */ | |
5e942c50 | 7390 | if (TREE_CODE (qual_wfl) == CONDITIONAL_EXPR |
09ed0f70 APB |
7391 | || TREE_CODE (qual_wfl) == STRING_CST |
7392 | || TREE_CODE (qual_wfl) == CONVERT_EXPR) | |
22eed1e6 APB |
7393 | { |
7394 | qual = TREE_CHAIN (qual); | |
7395 | qual_wfl = QUAL_WFL (qual); | |
7396 | again = 1; | |
7397 | } | |
e04a16fb AG |
7398 | } while (again); |
7399 | ||
7400 | /* If name appears within the scope of a location variable | |
7401 | declaration or parameter declaration, then it is an expression | |
7402 | name. We don't carry this test out if we're in the context of the | |
7403 | use of SUPER or THIS */ | |
e04a16fb AG |
7404 | if (!this_found && !super_found && (decl = IDENTIFIER_LOCAL_VALUE (name))) |
7405 | { | |
7406 | RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1; | |
7407 | QUAL_RESOLUTION (qual) = decl; | |
7408 | } | |
7409 | ||
7410 | /* If within the class/interface NAME was found to be used there | |
7411 | exists a (possibly inherited) field named NAME, then this is an | |
d8fccff5 APB |
7412 | expression name. If we saw a NEW_ARRAY_EXPR before and want to |
7413 | address length, it is OK. */ | |
7414 | else if ((decl = lookup_field_wrapper (ptr_type, name)) | |
7415 | || (new_array_found && name == length_identifier_node)) | |
e04a16fb AG |
7416 | { |
7417 | RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1; | |
d8fccff5 | 7418 | QUAL_RESOLUTION (qual) = (new_array_found ? NULL_TREE : decl); |
e04a16fb AG |
7419 | } |
7420 | ||
7421 | /* We reclassify NAME as a type name if: | |
7422 | - NAME is a class/interface declared within the compilation | |
7423 | unit containing NAME, | |
7424 | - NAME is imported via a single-type-import declaration, | |
7425 | - NAME is declared in an another compilation unit of the package | |
7426 | of the compilation unit containing NAME, | |
7427 | - NAME is declared by exactly on type-import-on-demand declaration | |
7428 | of the compilation unit containing NAME. */ | |
7429 | else if ((decl = resolve_and_layout (name, NULL_TREE))) | |
7430 | { | |
7431 | RESOLVE_TYPE_NAME_P (qual_wfl) = 1; | |
7432 | QUAL_RESOLUTION (qual) = decl; | |
7433 | } | |
7434 | ||
7435 | /* Method call are expression name */ | |
9bbc7d9f PB |
7436 | else if (TREE_CODE (QUAL_WFL (qual)) == CALL_EXPR |
7437 | || TREE_CODE (QUAL_WFL (qual)) == ARRAY_REF) | |
e04a16fb AG |
7438 | RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1; |
7439 | ||
7440 | /* Check here that NAME isn't declared by more than one | |
7441 | type-import-on-demand declaration of the compilation unit | |
7442 | containing NAME. FIXME */ | |
7443 | ||
7444 | /* Otherwise, NAME is reclassified as a package name */ | |
7445 | else | |
7446 | RESOLVE_PACKAGE_NAME_P (qual_wfl) = 1; | |
7447 | ||
7448 | /* Propagate the qualification accross other components of the | |
7449 | qualified name */ | |
7450 | for (qual = TREE_CHAIN (qual); qual; | |
7451 | qual_wfl = QUAL_WFL (qual), qual = TREE_CHAIN (qual)) | |
7452 | { | |
7453 | if (RESOLVE_PACKAGE_NAME_P (qual_wfl)) | |
7454 | RESOLVE_PACKAGE_NAME_P (QUAL_WFL (qual)) = 1; | |
7455 | else | |
7456 | RESOLVE_EXPRESSION_NAME_P (QUAL_WFL (qual)) = 1; | |
7457 | } | |
7458 | ||
7459 | /* Store the global qualification for the ambiguous part of ID back | |
7460 | into ID fields */ | |
7461 | if (RESOLVE_EXPRESSION_NAME_P (qual_wfl)) | |
7462 | RESOLVE_EXPRESSION_NAME_P (id) = 1; | |
7463 | else if (RESOLVE_TYPE_NAME_P (qual_wfl)) | |
7464 | RESOLVE_TYPE_NAME_P (id) = 1; | |
7465 | else if (RESOLVE_PACKAGE_NAME_P (qual_wfl)) | |
7466 | RESOLVE_PACKAGE_NAME_P (id) = 1; | |
7467 | ||
7468 | /* Restore the current class */ | |
7469 | current_class = saved_current_class; | |
7470 | } | |
7471 | ||
7472 | static int | |
7473 | breakdown_qualified (left, right, source) | |
7474 | tree *left, *right, source; | |
7475 | { | |
7476 | char *p = IDENTIFIER_POINTER (source), *base; | |
7477 | int l = IDENTIFIER_LENGTH (source); | |
7478 | ||
7479 | /* Breakdown NAME into REMAINDER . IDENTIFIER */ | |
7480 | base = p; | |
7481 | p += (l-1); | |
7482 | while (*p != '.' && p != base) | |
7483 | p--; | |
7484 | ||
7485 | /* We didn't find a '.'. Return an error */ | |
7486 | if (p == base) | |
7487 | return 1; | |
7488 | ||
7489 | *p = '\0'; | |
7490 | if (right) | |
7491 | *right = get_identifier (p+1); | |
7492 | *left = get_identifier (IDENTIFIER_POINTER (source)); | |
7493 | *p = '.'; | |
7494 | ||
7495 | return 0; | |
7496 | } | |
7497 | ||
e04a16fb | 7498 | /* Patch tree nodes in a function body. When a BLOCK is found, push |
5b09b33e PB |
7499 | local variable decls if present. |
7500 | Same as java_complete_lhs, but does resolve static finals to values. */ | |
e04a16fb AG |
7501 | |
7502 | static tree | |
7503 | java_complete_tree (node) | |
7504 | tree node; | |
5b09b33e PB |
7505 | { |
7506 | node = java_complete_lhs (node); | |
7507 | if (TREE_CODE (node) == VAR_DECL && FIELD_STATIC (node) | |
7508 | && FIELD_FINAL (node) && DECL_INITIAL (node) != NULL_TREE) | |
7509 | { | |
7510 | tree value = DECL_INITIAL (node); | |
7511 | DECL_INITIAL (node) = NULL_TREE; | |
7512 | value = fold_constant_for_init (value, node); | |
7513 | DECL_INITIAL (node) = value; | |
7514 | if (value != NULL_TREE) | |
7515 | return value; | |
7516 | } | |
7517 | return node; | |
7518 | } | |
7519 | ||
7520 | /* Patch tree nodes in a function body. When a BLOCK is found, push | |
7521 | local variable decls if present. | |
7522 | Same as java_complete_tree, but does not resolve static finals to values. */ | |
7523 | ||
7524 | static tree | |
7525 | java_complete_lhs (node) | |
7526 | tree node; | |
e04a16fb | 7527 | { |
22eed1e6 | 7528 | tree nn, cn, wfl_op1, wfl_op2, wfl_op3; |
b67d701b | 7529 | int flag; |
e04a16fb AG |
7530 | |
7531 | /* CONVERT_EXPR always has its type set, even though it needs to be | |
b67d701b | 7532 | worked out. */ |
e04a16fb AG |
7533 | if (TREE_TYPE (node) && TREE_CODE (node) != CONVERT_EXPR) |
7534 | return node; | |
7535 | ||
7536 | /* The switch block implements cases processing container nodes | |
7537 | first. Contained nodes are always written back. Leaves come | |
7538 | next and return a value. */ | |
7539 | switch (TREE_CODE (node)) | |
7540 | { | |
7541 | case BLOCK: | |
7542 | ||
7543 | /* 1- Block section. | |
7544 | Set the local values on decl names so we can identify them | |
7545 | faster when they're referenced. At that stage, identifiers | |
7546 | are legal so we don't check for declaration errors. */ | |
7547 | for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn)) | |
7548 | { | |
7549 | DECL_CONTEXT (cn) = current_function_decl; | |
7550 | IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = cn; | |
7551 | INITIALIZED_P (cn) = 0; | |
7552 | } | |
15fdcfe9 PB |
7553 | if (BLOCK_EXPR_BODY (node) == NULL_TREE) |
7554 | CAN_COMPLETE_NORMALLY (node) = 1; | |
7555 | else | |
e04a16fb | 7556 | { |
15fdcfe9 PB |
7557 | tree stmt = BLOCK_EXPR_BODY (node); |
7558 | tree *ptr; | |
7559 | int error_seen = 0; | |
7560 | if (TREE_CODE (stmt) == COMPOUND_EXPR) | |
7561 | { | |
c877974e APB |
7562 | /* Re-order from (((A; B); C); ...; Z) to |
7563 | (A; (B; (C ; (...; Z)))). | |
15fdcfe9 PB |
7564 | This makes it easier to scan the statements left-to-right |
7565 | without using recursion (which might overflow the stack | |
7566 | if the block has many statements. */ | |
7567 | for (;;) | |
7568 | { | |
7569 | tree left = TREE_OPERAND (stmt, 0); | |
7570 | if (TREE_CODE (left) != COMPOUND_EXPR) | |
7571 | break; | |
7572 | TREE_OPERAND (stmt, 0) = TREE_OPERAND (left, 1); | |
7573 | TREE_OPERAND (left, 1) = stmt; | |
7574 | stmt = left; | |
7575 | } | |
7576 | BLOCK_EXPR_BODY (node) = stmt; | |
7577 | } | |
7578 | ||
c877974e APB |
7579 | /* Now do the actual complete, without deep recursion for |
7580 | long blocks. */ | |
15fdcfe9 | 7581 | ptr = &BLOCK_EXPR_BODY (node); |
dc0b3eff PB |
7582 | while (TREE_CODE (*ptr) == COMPOUND_EXPR |
7583 | && TREE_OPERAND (*ptr, 1) != empty_stmt_node) | |
15fdcfe9 PB |
7584 | { |
7585 | tree cur = java_complete_tree (TREE_OPERAND (*ptr, 0)); | |
7586 | tree *next = &TREE_OPERAND (*ptr, 1); | |
7587 | TREE_OPERAND (*ptr, 0) = cur; | |
7588 | if (TREE_CODE (cur) == ERROR_MARK) | |
7589 | error_seen++; | |
7590 | else if (! CAN_COMPLETE_NORMALLY (cur)) | |
7591 | { | |
7592 | wfl_op2 = *next; | |
7593 | for (;;) | |
7594 | { | |
7595 | if (TREE_CODE (wfl_op2) == BLOCK) | |
7596 | wfl_op2 = BLOCK_EXPR_BODY (wfl_op2); | |
7597 | else if (TREE_CODE (wfl_op2) == COMPOUND_EXPR) | |
7598 | wfl_op2 = TREE_OPERAND (wfl_op2, 0); | |
7599 | else | |
7600 | break; | |
7601 | } | |
7602 | if (TREE_CODE (wfl_op2) != CASE_EXPR | |
dc0b3eff | 7603 | && TREE_CODE (wfl_op2) != DEFAULT_EXPR) |
82371d41 | 7604 | unreachable_stmt_error (*ptr); |
15fdcfe9 PB |
7605 | } |
7606 | ptr = next; | |
7607 | } | |
7608 | *ptr = java_complete_tree (*ptr); | |
7609 | ||
7610 | if (TREE_CODE (*ptr) == ERROR_MARK || error_seen > 0) | |
e04a16fb | 7611 | return error_mark_node; |
15fdcfe9 | 7612 | CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (*ptr); |
e04a16fb AG |
7613 | } |
7614 | /* Turn local bindings to null */ | |
7615 | for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn)) | |
7616 | IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = NULL_TREE; | |
7617 | ||
7618 | TREE_TYPE (node) = void_type_node; | |
7619 | break; | |
7620 | ||
7621 | /* 2- They are expressions but ultimately deal with statements */ | |
b67d701b | 7622 | |
b9f7e36c APB |
7623 | case THROW_EXPR: |
7624 | wfl_op1 = TREE_OPERAND (node, 0); | |
7625 | COMPLETE_CHECK_OP_0 (node); | |
15fdcfe9 | 7626 | /* CAN_COMPLETE_NORMALLY (node) = 0; */ |
b9f7e36c APB |
7627 | return patch_throw_statement (node, wfl_op1); |
7628 | ||
7629 | case SYNCHRONIZED_EXPR: | |
7630 | wfl_op1 = TREE_OPERAND (node, 0); | |
b9f7e36c APB |
7631 | return patch_synchronized_statement (node, wfl_op1); |
7632 | ||
b67d701b PB |
7633 | case TRY_EXPR: |
7634 | return patch_try_statement (node); | |
7635 | ||
a7d8d81f PB |
7636 | case TRY_FINALLY_EXPR: |
7637 | COMPLETE_CHECK_OP_0 (node); | |
7638 | COMPLETE_CHECK_OP_1 (node); | |
7639 | CAN_COMPLETE_NORMALLY (node) | |
7640 | = (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0)) | |
7641 | && CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1))); | |
7642 | TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 0)); | |
7643 | return node; | |
7644 | ||
5a005d9e PB |
7645 | case CLEANUP_POINT_EXPR: |
7646 | COMPLETE_CHECK_OP_0 (node); | |
7647 | TREE_TYPE (node) = void_type_node; | |
7648 | CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0)); | |
7649 | return node; | |
7650 | ||
7651 | case WITH_CLEANUP_EXPR: | |
7652 | COMPLETE_CHECK_OP_0 (node); | |
7653 | COMPLETE_CHECK_OP_2 (node); | |
7654 | CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0)); | |
7655 | TREE_TYPE (node) = void_type_node; | |
7656 | return node; | |
7657 | ||
e04a16fb AG |
7658 | case LABELED_BLOCK_EXPR: |
7659 | PUSH_LABELED_BLOCK (node); | |
7660 | if (LABELED_BLOCK_BODY (node)) | |
7661 | COMPLETE_CHECK_OP_1 (node); | |
7662 | TREE_TYPE (node) = void_type_node; | |
7663 | POP_LABELED_BLOCK (); | |
15fdcfe9 PB |
7664 | if (CAN_COMPLETE_NORMALLY (LABELED_BLOCK_BODY (node))) |
7665 | CAN_COMPLETE_NORMALLY (node) = 1; | |
e04a16fb AG |
7666 | return node; |
7667 | ||
7668 | case EXIT_BLOCK_EXPR: | |
7669 | /* We don't complete operand 1, because it's the return value of | |
7670 | the EXIT_BLOCK_EXPR which doesn't exist it Java */ | |
7671 | return patch_bc_statement (node); | |
7672 | ||
15fdcfe9 PB |
7673 | case CASE_EXPR: |
7674 | cn = java_complete_tree (TREE_OPERAND (node, 0)); | |
7675 | if (cn == error_mark_node) | |
7676 | return cn; | |
7677 | ||
7678 | /* First, the case expression must be constant */ | |
7679 | cn = fold (cn); | |
7680 | ||
7681 | if (!TREE_CONSTANT (cn)) | |
7682 | { | |
7683 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
7684 | parse_error_context (node, "Constant expression required"); | |
7685 | return error_mark_node; | |
7686 | } | |
7687 | ||
7688 | nn = ctxp->current_loop; | |
7689 | ||
7690 | /* It must be assignable to the type of the switch expression. */ | |
c877974e APB |
7691 | if (!try_builtin_assignconv (NULL_TREE, |
7692 | TREE_TYPE (TREE_OPERAND (nn, 0)), cn)) | |
15fdcfe9 PB |
7693 | { |
7694 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
7695 | parse_error_context | |
7696 | (wfl_operator, | |
7697 | "Incompatible type for case. Can't convert `%s' to `int'", | |
7698 | lang_printable_name (TREE_TYPE (cn), 0)); | |
7699 | return error_mark_node; | |
7700 | } | |
7701 | ||
7702 | cn = fold (convert (int_type_node, cn)); | |
7703 | ||
7704 | /* Multiple instance of a case label bearing the same | |
7705 | value is checked during code generation. The case | |
7706 | expression is allright so far. */ | |
7707 | TREE_OPERAND (node, 0) = cn; | |
9bbc7d9f | 7708 | TREE_TYPE (node) = void_type_node; |
15fdcfe9 | 7709 | CAN_COMPLETE_NORMALLY (node) = 1; |
10100cc7 | 7710 | TREE_SIDE_EFFECTS (node) = 1; |
15fdcfe9 PB |
7711 | break; |
7712 | ||
7713 | case DEFAULT_EXPR: | |
7714 | nn = ctxp->current_loop; | |
7715 | /* Only one default label is allowed per switch statement */ | |
7716 | if (SWITCH_HAS_DEFAULT (nn)) | |
7717 | { | |
7718 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
7719 | parse_error_context (wfl_operator, | |
7720 | "Duplicate case label: `default'"); | |
7721 | return error_mark_node; | |
7722 | } | |
7723 | else | |
7724 | SWITCH_HAS_DEFAULT (nn) = 1; | |
9bbc7d9f | 7725 | TREE_TYPE (node) = void_type_node; |
10100cc7 | 7726 | TREE_SIDE_EFFECTS (node) = 1; |
15fdcfe9 PB |
7727 | CAN_COMPLETE_NORMALLY (node) = 1; |
7728 | break; | |
7729 | ||
b67d701b | 7730 | case SWITCH_EXPR: |
e04a16fb AG |
7731 | case LOOP_EXPR: |
7732 | PUSH_LOOP (node); | |
7733 | /* Check whether the loop was enclosed in a labeled | |
7734 | statement. If not, create one, insert the loop in it and | |
7735 | return the node */ | |
7736 | nn = patch_loop_statement (node); | |
b67d701b | 7737 | |
e04a16fb | 7738 | /* Anyways, walk the body of the loop */ |
b67d701b PB |
7739 | if (TREE_CODE (node) == LOOP_EXPR) |
7740 | TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0)); | |
7741 | /* Switch statement: walk the switch expression and the cases */ | |
7742 | else | |
7743 | node = patch_switch_statement (node); | |
7744 | ||
e04a16fb AG |
7745 | if (TREE_OPERAND (node, 0) == error_mark_node) |
7746 | return error_mark_node; | |
7747 | TREE_TYPE (nn) = TREE_TYPE (node) = void_type_node; | |
7748 | /* If we returned something different, that's because we | |
7749 | inserted a label. Pop the label too. */ | |
7750 | if (nn != node) | |
15fdcfe9 PB |
7751 | { |
7752 | if (CAN_COMPLETE_NORMALLY (node)) | |
7753 | CAN_COMPLETE_NORMALLY (nn) = 1; | |
7754 | POP_LABELED_BLOCK (); | |
7755 | } | |
e04a16fb AG |
7756 | POP_LOOP (); |
7757 | return nn; | |
7758 | ||
7759 | case EXIT_EXPR: | |
7760 | TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0)); | |
7761 | return patch_exit_expr (node); | |
7762 | ||
7763 | case COND_EXPR: | |
7764 | /* Condition */ | |
7765 | TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0)); | |
7766 | if (TREE_OPERAND (node, 0) == error_mark_node) | |
7767 | return error_mark_node; | |
7768 | /* then-else branches */ | |
7769 | TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1)); | |
7770 | if (TREE_OPERAND (node, 1) == error_mark_node) | |
7771 | return error_mark_node; | |
7772 | TREE_OPERAND (node, 2) = java_complete_tree (TREE_OPERAND (node, 2)); | |
7773 | if (TREE_OPERAND (node, 2) == error_mark_node) | |
7774 | return error_mark_node; | |
7775 | return patch_if_else_statement (node); | |
7776 | break; | |
7777 | ||
22eed1e6 APB |
7778 | case CONDITIONAL_EXPR: |
7779 | /* Condition */ | |
7780 | wfl_op1 = TREE_OPERAND (node, 0); | |
7781 | COMPLETE_CHECK_OP_0 (node); | |
7782 | wfl_op2 = TREE_OPERAND (node, 1); | |
7783 | COMPLETE_CHECK_OP_1 (node); | |
7784 | wfl_op3 = TREE_OPERAND (node, 2); | |
7785 | COMPLETE_CHECK_OP_2 (node); | |
7786 | return patch_conditional_expr (node, wfl_op1, wfl_op2); | |
7787 | ||
e04a16fb AG |
7788 | /* 3- Expression section */ |
7789 | case COMPOUND_EXPR: | |
15fdcfe9 | 7790 | wfl_op2 = TREE_OPERAND (node, 1); |
ac825856 APB |
7791 | TREE_OPERAND (node, 0) = nn = |
7792 | java_complete_tree (TREE_OPERAND (node, 0)); | |
dc0b3eff PB |
7793 | if (wfl_op2 == empty_stmt_node) |
7794 | CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (nn); | |
7795 | else | |
15fdcfe9 | 7796 | { |
dc0b3eff | 7797 | if (! CAN_COMPLETE_NORMALLY (nn) && TREE_CODE (nn) != ERROR_MARK) |
bccaf73a | 7798 | { |
dc0b3eff PB |
7799 | /* An unreachable condition in a do-while statement |
7800 | is *not* (technically) an unreachable statement. */ | |
7801 | nn = wfl_op2; | |
7802 | if (TREE_CODE (nn) == EXPR_WITH_FILE_LOCATION) | |
7803 | nn = EXPR_WFL_NODE (nn); | |
7804 | if (TREE_CODE (nn) != EXIT_EXPR) | |
7805 | { | |
7806 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op2); | |
7807 | parse_error_context (wfl_operator, "Unreachable statement"); | |
7808 | } | |
bccaf73a | 7809 | } |
dc0b3eff PB |
7810 | TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1)); |
7811 | if (TREE_OPERAND (node, 1) == error_mark_node) | |
7812 | return error_mark_node; | |
7813 | CAN_COMPLETE_NORMALLY (node) | |
7814 | = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)); | |
15fdcfe9 | 7815 | } |
e04a16fb AG |
7816 | TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 1)); |
7817 | break; | |
7818 | ||
7819 | case RETURN_EXPR: | |
15fdcfe9 | 7820 | /* CAN_COMPLETE_NORMALLY (node) = 0; */ |
e04a16fb AG |
7821 | return patch_return (node); |
7822 | ||
7823 | case EXPR_WITH_FILE_LOCATION: | |
7824 | if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */ | |
7825 | || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE) | |
15fdcfe9 PB |
7826 | { |
7827 | node = resolve_expression_name (node, NULL); | |
dc0b3eff PB |
7828 | if (node == error_mark_node) |
7829 | return node; | |
15fdcfe9 PB |
7830 | CAN_COMPLETE_NORMALLY (node) = 1; |
7831 | } | |
e04a16fb AG |
7832 | else |
7833 | { | |
5b09b33e PB |
7834 | tree body; |
7835 | int save_lineno = lineno; | |
7836 | lineno = EXPR_WFL_LINENO (node); | |
7837 | body = java_complete_tree (EXPR_WFL_NODE (node)); | |
7838 | lineno = save_lineno; | |
15fdcfe9 | 7839 | EXPR_WFL_NODE (node) = body; |
dc0b3eff | 7840 | TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (body); |
15fdcfe9 | 7841 | CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (body); |
dc0b3eff | 7842 | if (body == error_mark_node) |
e04a16fb AG |
7843 | { |
7844 | /* Its important for the evaluation of assignment that | |
7845 | this mark on the TREE_TYPE is propagated. */ | |
7846 | TREE_TYPE (node) = error_mark_node; | |
7847 | return error_mark_node; | |
7848 | } | |
7849 | else | |
7850 | TREE_TYPE (node) = TREE_TYPE (EXPR_WFL_NODE (node)); | |
15fdcfe9 | 7851 | |
e04a16fb AG |
7852 | } |
7853 | break; | |
7854 | ||
b67d701b | 7855 | case NEW_ARRAY_EXPR: |
e04a16fb AG |
7856 | /* Patch all the dimensions */ |
7857 | flag = 0; | |
7858 | for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn)) | |
7859 | { | |
7860 | int location = EXPR_WFL_LINECOL (TREE_VALUE (cn)); | |
7861 | tree dim = java_complete_tree (TREE_VALUE (cn)); | |
7862 | if (dim == error_mark_node) | |
7863 | { | |
7864 | flag = 1; | |
7865 | continue; | |
7866 | } | |
7867 | else | |
7868 | { | |
b9f7e36c | 7869 | TREE_VALUE (cn) = dim; |
e04a16fb AG |
7870 | /* Setup the location of the current dimension, for |
7871 | later error report. */ | |
7872 | TREE_PURPOSE (cn) = | |
7873 | build_expr_wfl (NULL_TREE, input_filename, 0, 0); | |
7874 | EXPR_WFL_LINECOL (TREE_PURPOSE (cn)) = location; | |
7875 | } | |
7876 | } | |
7877 | /* They complete the array creation expression, if no errors | |
7878 | were found. */ | |
15fdcfe9 | 7879 | CAN_COMPLETE_NORMALLY (node) = 1; |
e04a16fb AG |
7880 | return (flag ? error_mark_node : patch_newarray (node)); |
7881 | ||
b67d701b | 7882 | case NEW_CLASS_EXPR: |
e04a16fb | 7883 | case CALL_EXPR: |
b67d701b | 7884 | /* Complete function's argument(s) first */ |
e04a16fb AG |
7885 | if (complete_function_arguments (node)) |
7886 | return error_mark_node; | |
7887 | else | |
b9f7e36c | 7888 | { |
22eed1e6 APB |
7889 | tree decl, wfl = TREE_OPERAND (node, 0); |
7890 | int in_this = CALL_THIS_CONSTRUCTOR_P (node); | |
7891 | ||
c877974e | 7892 | node = patch_method_invocation (node, NULL_TREE, |
89e09b9a | 7893 | NULL_TREE, 0, &decl); |
c877974e APB |
7894 | if (node == error_mark_node) |
7895 | return error_mark_node; | |
7896 | ||
7897 | check_thrown_exceptions (EXPR_WFL_LINECOL (node), decl); | |
7898 | /* If we call this(...), register signature and positions */ | |
7899 | if (in_this) | |
7900 | DECL_CONSTRUCTOR_CALLS (current_function_decl) = | |
7901 | tree_cons (wfl, decl, | |
7902 | DECL_CONSTRUCTOR_CALLS (current_function_decl)); | |
de4c7b02 | 7903 | CAN_COMPLETE_NORMALLY (node) = 1; |
dc0b3eff | 7904 | return force_evaluation_order (node); |
b9f7e36c | 7905 | } |
e04a16fb AG |
7906 | |
7907 | case MODIFY_EXPR: | |
7908 | /* Save potential wfls */ | |
7909 | wfl_op1 = TREE_OPERAND (node, 0); | |
7910 | wfl_op2 = TREE_OPERAND (node, 1); | |
5b09b33e | 7911 | TREE_OPERAND (node, 0) = java_complete_lhs (wfl_op1); |
e04a16fb AG |
7912 | if (TREE_OPERAND (node, 0) == error_mark_node) |
7913 | return error_mark_node; | |
7914 | ||
7915 | if (COMPOUND_ASSIGN_P (wfl_op2)) | |
7916 | { | |
7917 | tree lvalue; | |
7918 | tree other = | |
7919 | java_complete_tree (TREE_OPERAND (wfl_op2, 0)); | |
7920 | ||
7921 | /* Hand stablize the lhs on both places */ | |
7922 | lvalue = stabilize_reference (other); | |
7923 | TREE_OPERAND (node, 0) = lvalue; | |
7924 | TREE_OPERAND (TREE_OPERAND (node, 1), 0) = lvalue; | |
7925 | } | |
7926 | ||
f8976021 APB |
7927 | /* If we're about to patch a NEW_ARRAY_INIT, we call a special |
7928 | function to complete this RHS */ | |
7929 | if (TREE_CODE (wfl_op2) == NEW_ARRAY_INIT) | |
fdec99c6 | 7930 | nn = patch_new_array_init (TREE_TYPE (TREE_OPERAND (node, 0)), |
f8976021 APB |
7931 | TREE_OPERAND (node, 1)); |
7932 | else | |
7933 | nn = java_complete_tree (TREE_OPERAND (node, 1)); | |
7934 | ||
e04a16fb AG |
7935 | /* There are cases where the type of RHS is fixed. In those |
7936 | cases, if the evaluation of the RHS fails, we further the | |
7937 | evaluation of the assignment to detect more errors. */ | |
e04a16fb AG |
7938 | if (nn == error_mark_node) |
7939 | { | |
c877974e APB |
7940 | /* It's hopeless, but we can further things on to discover |
7941 | an error during the assignment. In any cases, the | |
7942 | assignment operation fails. */ | |
7943 | if (TREE_CODE (TREE_OPERAND (node, 1)) != EXPR_WITH_FILE_LOCATION | |
f8976021 | 7944 | && TREE_CODE (TREE_OPERAND (node, 1)) != NEW_ARRAY_INIT |
c877974e APB |
7945 | && TREE_TYPE (TREE_OPERAND (node, 1)) != error_mark_node) |
7946 | patch_assignment (node, wfl_op1, wfl_op2); | |
7947 | ||
e04a16fb | 7948 | /* Now, we still mark the lhs as initialized */ |
34f4db93 | 7949 | if (JDECL_P (TREE_OPERAND (node, 0))) |
e04a16fb AG |
7950 | INITIALIZED_P (TREE_OPERAND (node, 0)) = 1; |
7951 | ||
7952 | return error_mark_node; | |
7953 | } | |
7954 | TREE_OPERAND (node, 1) = nn; | |
b67d701b PB |
7955 | |
7956 | /* In case we're handling = with a String as a RHS, we need to | |
7957 | produce a String out of the RHS (it might still be a | |
7958 | STRING_CST or a StringBuffer at this stage */ | |
7959 | if ((nn = patch_string (TREE_OPERAND (node, 1)))) | |
7960 | TREE_OPERAND (node, 1) = nn; | |
15fdcfe9 PB |
7961 | node = patch_assignment (node, wfl_op1, wfl_op2); |
7962 | CAN_COMPLETE_NORMALLY (node) = 1; | |
7525cc04 APB |
7963 | |
7964 | /* Before returning the node, in the context of a static field | |
7965 | assignment in <clinit>, we may want to carray further | |
7966 | optimizations. (VAR_DECL means it's a static field. See | |
7967 | add_field. */ | |
7968 | if (DECL_NAME (current_function_decl) == clinit_identifier_node | |
5b09b33e | 7969 | && MODIFY_EXPR_FROM_INITIALIZATION_P (node) |
7525cc04 APB |
7970 | && TREE_CODE (TREE_OPERAND (node, 0)) == VAR_DECL) |
7971 | node = patch_initialized_static_field (node); | |
7972 | ||
15fdcfe9 | 7973 | return node; |
e04a16fb AG |
7974 | |
7975 | case MULT_EXPR: | |
7976 | case PLUS_EXPR: | |
7977 | case MINUS_EXPR: | |
7978 | case LSHIFT_EXPR: | |
7979 | case RSHIFT_EXPR: | |
7980 | case URSHIFT_EXPR: | |
7981 | case BIT_AND_EXPR: | |
7982 | case BIT_XOR_EXPR: | |
7983 | case BIT_IOR_EXPR: | |
7984 | case TRUNC_MOD_EXPR: | |
7985 | case RDIV_EXPR: | |
7986 | case TRUTH_ANDIF_EXPR: | |
7987 | case TRUTH_ORIF_EXPR: | |
7988 | case EQ_EXPR: | |
7989 | case NE_EXPR: | |
7990 | case GT_EXPR: | |
7991 | case GE_EXPR: | |
7992 | case LT_EXPR: | |
7993 | case LE_EXPR: | |
7994 | /* Operands 0 and 1 are WFL in certain cases only. patch_binop | |
7995 | knows how to handle those cases. */ | |
7996 | wfl_op1 = TREE_OPERAND (node, 0); | |
7997 | wfl_op2 = TREE_OPERAND (node, 1); | |
b67d701b | 7998 | |
15fdcfe9 | 7999 | CAN_COMPLETE_NORMALLY (node) = 1; |
b67d701b PB |
8000 | /* Don't complete string nodes if dealing with the PLUS operand. */ |
8001 | if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op1)) | |
8002 | { | |
8003 | TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1); | |
8004 | if (TREE_OPERAND (node, 0) == error_mark_node) | |
8005 | return error_mark_node; | |
8006 | } | |
8007 | if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op2)) | |
8008 | { | |
8009 | TREE_OPERAND (node, 1) = java_complete_tree (wfl_op2); | |
8010 | if (TREE_OPERAND (node, 1) == error_mark_node) | |
8011 | return error_mark_node; | |
8012 | } | |
dc0b3eff | 8013 | return force_evaluation_order (patch_binop (node, wfl_op1, wfl_op2)); |
e04a16fb | 8014 | |
5e942c50 APB |
8015 | case INSTANCEOF_EXPR: |
8016 | wfl_op1 = TREE_OPERAND (node, 0); | |
8017 | COMPLETE_CHECK_OP_0 (node); | |
8018 | return patch_binop (node, wfl_op1, TREE_OPERAND (node, 1)); | |
8019 | ||
b67d701b | 8020 | case UNARY_PLUS_EXPR: |
e04a16fb AG |
8021 | case NEGATE_EXPR: |
8022 | case TRUTH_NOT_EXPR: | |
8023 | case BIT_NOT_EXPR: | |
8024 | case PREDECREMENT_EXPR: | |
8025 | case PREINCREMENT_EXPR: | |
8026 | case POSTDECREMENT_EXPR: | |
8027 | case POSTINCREMENT_EXPR: | |
8028 | case CONVERT_EXPR: | |
8029 | /* There are cases were wfl_op1 is a WFL. patch_unaryop knows | |
8030 | how to handle those cases. */ | |
8031 | wfl_op1 = TREE_OPERAND (node, 0); | |
15fdcfe9 | 8032 | CAN_COMPLETE_NORMALLY (node) = 1; |
e04a16fb AG |
8033 | TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1); |
8034 | if (TREE_OPERAND (node, 0) == error_mark_node) | |
8035 | return error_mark_node; | |
4a5f66c3 APB |
8036 | node = patch_unaryop (node, wfl_op1); |
8037 | CAN_COMPLETE_NORMALLY (node) = 1; | |
8038 | break; | |
e04a16fb AG |
8039 | |
8040 | case ARRAY_REF: | |
8041 | /* There are cases were wfl_op1 is a WFL. patch_array_ref knows | |
8042 | how to handle those cases. */ | |
8043 | wfl_op1 = TREE_OPERAND (node, 0); | |
8044 | TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1); | |
8045 | if (TREE_OPERAND (node, 0) == error_mark_node) | |
8046 | return error_mark_node; | |
b67d701b PB |
8047 | if (!flag_emit_class_files) |
8048 | TREE_OPERAND (node, 0) = save_expr (TREE_OPERAND (node, 0)); | |
e04a16fb AG |
8049 | /* The same applies to wfl_op2 */ |
8050 | wfl_op2 = TREE_OPERAND (node, 1); | |
8051 | TREE_OPERAND (node, 1) = java_complete_tree (wfl_op2); | |
8052 | if (TREE_OPERAND (node, 1) == error_mark_node) | |
8053 | return error_mark_node; | |
22eed1e6 APB |
8054 | if (!flag_emit_class_files) |
8055 | TREE_OPERAND (node, 1) = save_expr (TREE_OPERAND (node, 1)); | |
dc0b3eff | 8056 | return force_evaluation_order (patch_array_ref (node)); |
e04a16fb | 8057 | |
63a212ed PB |
8058 | case RECORD_TYPE: |
8059 | return node;; | |
8060 | ||
8061 | case COMPONENT_REF: | |
8062 | /* The first step in the re-write of qualified name handling. FIXME. | |
8063 | So far, this is only to support PRIMTYPE.class -> PRIMCLASS.TYPE. */ | |
9bbc7d9f | 8064 | TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0)); |
63a212ed PB |
8065 | if (TREE_CODE (TREE_OPERAND (node, 0)) == RECORD_TYPE) |
8066 | { | |
8067 | tree name = TREE_OPERAND (node, 1); | |
8068 | tree field = lookup_field_wrapper (TREE_OPERAND (node, 0), name); | |
8069 | if (field == NULL_TREE) | |
8070 | { | |
8071 | error ("missing static field `%s'", IDENTIFIER_POINTER (name)); | |
8072 | return error_mark_node; | |
8073 | } | |
8074 | if (! FIELD_STATIC (field)) | |
8075 | { | |
8076 | error ("not a static field `%s'", IDENTIFIER_POINTER (name)); | |
8077 | return error_mark_node; | |
8078 | } | |
8079 | return field; | |
8080 | } | |
8081 | else | |
8082 | fatal ("unimplemented java_complete_tree for COMPONENT_REF"); | |
9bbc7d9f | 8083 | break; |
9bbc7d9f | 8084 | |
b67d701b | 8085 | case THIS_EXPR: |
e04a16fb AG |
8086 | /* Can't use THIS in a static environment */ |
8087 | if (!current_this) | |
8088 | { | |
8089 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
8090 | parse_error_context (wfl_operator, "Keyword `this' used outside " | |
8091 | "allowed context"); | |
8092 | TREE_TYPE (node) = error_mark_node; | |
8093 | return error_mark_node; | |
8094 | } | |
22eed1e6 APB |
8095 | if (ctxp->explicit_constructor_p) |
8096 | { | |
8097 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
8098 | parse_error_context | |
8099 | (wfl_operator, "Can't reference `this' or `super' before the " | |
8100 | "superclass constructor has been called"); | |
8101 | TREE_TYPE (node) = error_mark_node; | |
8102 | return error_mark_node; | |
8103 | } | |
e04a16fb AG |
8104 | return current_this; |
8105 | ||
e04a16fb | 8106 | default: |
15fdcfe9 | 8107 | CAN_COMPLETE_NORMALLY (node) = 1; |
b67d701b PB |
8108 | /* Ok: may be we have a STRING_CST or a crafted `StringBuffer' |
8109 | and it's time to turn it into the appropriate String object | |
8110 | */ | |
8111 | if ((node = patch_string (node))) | |
8112 | return node; | |
e04a16fb AG |
8113 | fatal ("No case for tree code `%s' - java_complete_tree\n", |
8114 | tree_code_name [TREE_CODE (node)]); | |
8115 | } | |
8116 | return node; | |
8117 | } | |
8118 | ||
8119 | /* Complete function call's argument. Return a non zero value is an | |
8120 | error was found. */ | |
8121 | ||
8122 | static int | |
8123 | complete_function_arguments (node) | |
8124 | tree node; | |
8125 | { | |
8126 | int flag = 0; | |
8127 | tree cn; | |
8128 | ||
22eed1e6 | 8129 | ctxp->explicit_constructor_p += (CALL_THIS_CONSTRUCTOR_P (node) ? 1 : 0); |
e04a16fb AG |
8130 | for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn)) |
8131 | { | |
b67d701b | 8132 | tree wfl = TREE_VALUE (cn), parm, temp; |
e04a16fb AG |
8133 | parm = java_complete_tree (wfl); |
8134 | if (parm == error_mark_node) | |
8135 | { | |
8136 | flag = 1; | |
8137 | continue; | |
8138 | } | |
b67d701b PB |
8139 | /* If have a string literal that we haven't transformed yet or a |
8140 | crafted string buffer, as a result of use of the the String | |
8141 | `+' operator. Build `parm.toString()' and expand it. */ | |
8142 | if ((temp = patch_string (parm))) | |
b9f7e36c | 8143 | parm = temp; |
5e942c50 APB |
8144 | /* Inline PRIMTYPE.TYPE read access */ |
8145 | parm = maybe_build_primttype_type_ref (parm, wfl); | |
b9f7e36c | 8146 | |
5e942c50 | 8147 | TREE_VALUE (cn) = parm; |
e04a16fb | 8148 | } |
22eed1e6 | 8149 | ctxp->explicit_constructor_p -= (CALL_THIS_CONSTRUCTOR_P (node) ? 1 : 0); |
e04a16fb AG |
8150 | return flag; |
8151 | } | |
8152 | ||
8153 | /* Sometimes (for loops and variable initialized during their | |
8154 | declaration), we want to wrap a statement around a WFL and turn it | |
8155 | debugable. */ | |
8156 | ||
8157 | static tree | |
8158 | build_debugable_stmt (location, stmt) | |
8159 | int location; | |
8160 | tree stmt; | |
8161 | { | |
8162 | if (TREE_CODE (stmt) != EXPR_WITH_FILE_LOCATION) | |
8163 | { | |
8164 | stmt = build_expr_wfl (stmt, input_filename, 0, 0); | |
8165 | EXPR_WFL_LINECOL (stmt) = location; | |
8166 | } | |
8167 | JAVA_MAYBE_GENERATE_DEBUG_INFO (stmt); | |
8168 | return stmt; | |
8169 | } | |
8170 | ||
8171 | static tree | |
8172 | build_expr_block (body, decls) | |
8173 | tree body, decls; | |
8174 | { | |
8175 | tree node = make_node (BLOCK); | |
8176 | BLOCK_EXPR_DECLS (node) = decls; | |
b67d701b | 8177 | BLOCK_EXPR_BODY (node) = body; |
e04a16fb AG |
8178 | if (body) |
8179 | TREE_TYPE (node) = TREE_TYPE (body); | |
8180 | TREE_SIDE_EFFECTS (node) = 1; | |
8181 | return node; | |
8182 | } | |
8183 | ||
b67d701b PB |
8184 | /* Create a new function block and link it approriately to current |
8185 | function block chain */ | |
e04a16fb AG |
8186 | |
8187 | static tree | |
8188 | enter_block () | |
8189 | { | |
b67d701b PB |
8190 | return (enter_a_block (build_expr_block (NULL_TREE, NULL_TREE))); |
8191 | } | |
8192 | ||
8193 | /* Link block B supercontext to the previous block. The current | |
8194 | function DECL is used as supercontext when enter_a_block is called | |
8195 | for the first time for a given function. The current function body | |
8196 | (DECL_FUNCTION_BODY) is set to be block B. */ | |
8197 | ||
8198 | static tree | |
8199 | enter_a_block (b) | |
8200 | tree b; | |
8201 | { | |
e04a16fb AG |
8202 | tree fndecl = current_function_decl; |
8203 | ||
8204 | if (!DECL_FUNCTION_BODY (fndecl)) | |
8205 | { | |
8206 | BLOCK_SUPERCONTEXT (b) = fndecl; | |
8207 | DECL_FUNCTION_BODY (fndecl) = b; | |
8208 | } | |
8209 | else | |
8210 | { | |
8211 | BLOCK_SUPERCONTEXT (b) = DECL_FUNCTION_BODY (fndecl); | |
8212 | DECL_FUNCTION_BODY (fndecl) = b; | |
8213 | } | |
8214 | return b; | |
8215 | } | |
8216 | ||
8217 | /* Exit a block by changing the current function body | |
8218 | (DECL_FUNCTION_BODY) to the current block super context, only if | |
8219 | the block being exited isn't the method's top level one. */ | |
8220 | ||
8221 | static tree | |
8222 | exit_block () | |
8223 | { | |
8224 | tree b = DECL_FUNCTION_BODY (current_function_decl); | |
8225 | ||
8226 | if (BLOCK_SUPERCONTEXT (b) != current_function_decl) | |
8227 | DECL_FUNCTION_BODY (current_function_decl) = BLOCK_SUPERCONTEXT (b); | |
8228 | ||
8229 | return b; | |
8230 | } | |
8231 | ||
8232 | /* Lookup for NAME in the nested function's blocks, all the way up to | |
8233 | the current toplevel one. It complies with Java's local variable | |
8234 | scoping rules. */ | |
8235 | ||
8236 | static tree | |
8237 | lookup_name_in_blocks (name) | |
8238 | tree name; | |
8239 | { | |
8240 | tree b = DECL_FUNCTION_BODY (current_function_decl); | |
8241 | ||
8242 | while (b != current_function_decl) | |
8243 | { | |
8244 | tree current; | |
8245 | ||
8246 | /* Paranoid sanity check. To be removed */ | |
8247 | if (TREE_CODE (b) != BLOCK) | |
8248 | fatal ("non block expr function body - lookup_name_in_blocks"); | |
8249 | ||
8250 | for (current = BLOCK_EXPR_DECLS (b); current; | |
8251 | current = TREE_CHAIN (current)) | |
8252 | if (DECL_NAME (current) == name) | |
8253 | return current; | |
8254 | b = BLOCK_SUPERCONTEXT (b); | |
8255 | } | |
8256 | return NULL_TREE; | |
8257 | } | |
8258 | ||
8259 | static void | |
8260 | maybe_absorb_scoping_blocks () | |
8261 | { | |
8262 | while (BLOCK_EXPR_ORIGIN (DECL_FUNCTION_BODY (current_function_decl))) | |
8263 | { | |
8264 | tree b = exit_block (); | |
8265 | java_method_add_stmt (current_function_decl, b); | |
8266 | SOURCE_FRONTEND_DEBUG (("Absorbing scoping block at line %d", lineno)); | |
8267 | } | |
8268 | } | |
8269 | ||
8270 | \f | |
8271 | /* This section of the source is reserved to build_* functions that | |
8272 | are building incomplete tree nodes and the patch_* functions that | |
8273 | are completing them. */ | |
8274 | ||
9bbc7d9f | 8275 | /* Build a super() constructor invocation. Returns empty_stmt_node if |
22eed1e6 APB |
8276 | we're currently dealing with the class java.lang.Object. */ |
8277 | ||
8278 | static tree | |
8279 | build_super_invocation () | |
8280 | { | |
8281 | if (current_class == object_type_node) | |
9bbc7d9f | 8282 | return empty_stmt_node; |
22eed1e6 APB |
8283 | else |
8284 | { | |
8285 | tree super_wfl = build_wfl_node (super_identifier_node, | |
8286 | input_filename, 0, 0); | |
8287 | return build_method_invocation (super_wfl, NULL_TREE); | |
8288 | } | |
8289 | } | |
8290 | ||
8291 | /* Build a SUPER/THIS qualified method invocation. */ | |
8292 | ||
8293 | static tree | |
8294 | build_this_super_qualified_invocation (use_this, name, args, lloc, rloc) | |
8295 | int use_this; | |
8296 | tree name, args; | |
8297 | int lloc, rloc; | |
8298 | ||
8299 | { | |
8300 | tree invok; | |
8301 | tree wfl = | |
8302 | build_wfl_node ((use_this ? this_identifier_node : super_identifier_node), | |
8303 | input_filename, 0, 0); | |
8304 | EXPR_WFL_LINECOL (wfl) = lloc; | |
8305 | invok = build_method_invocation (name, args); | |
8306 | return make_qualified_primary (wfl, invok, rloc); | |
8307 | } | |
8308 | ||
b67d701b | 8309 | /* Build an incomplete CALL_EXPR node. */ |
e04a16fb AG |
8310 | |
8311 | static tree | |
8312 | build_method_invocation (name, args) | |
8313 | tree name; | |
8314 | tree args; | |
8315 | { | |
8316 | tree call = build (CALL_EXPR, NULL_TREE, name, args, NULL_TREE); | |
8317 | TREE_SIDE_EFFECTS (call) = 1; | |
b67d701b PB |
8318 | EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name); |
8319 | return call; | |
8320 | } | |
8321 | ||
8322 | /* Build an incomplete new xxx(...) node. */ | |
8323 | ||
8324 | static tree | |
8325 | build_new_invocation (name, args) | |
8326 | tree name, args; | |
8327 | { | |
8328 | tree call = build (NEW_CLASS_EXPR, NULL_TREE, name, args, NULL_TREE); | |
8329 | TREE_SIDE_EFFECTS (call) = 1; | |
e04a16fb AG |
8330 | EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name); |
8331 | return call; | |
8332 | } | |
8333 | ||
8334 | /* Build an incomplete assignment expression. */ | |
8335 | ||
8336 | static tree | |
8337 | build_assignment (op, op_location, lhs, rhs) | |
8338 | int op, op_location; | |
8339 | tree lhs, rhs; | |
8340 | { | |
8341 | tree assignment; | |
8342 | /* Build the corresponding binop if we deal with a Compound | |
8343 | Assignment operator. Mark the binop sub-tree as part of a | |
8344 | Compound Assignment expression */ | |
8345 | if (op != ASSIGN_TK) | |
8346 | { | |
8347 | rhs = build_binop (BINOP_LOOKUP (op), op_location, lhs, rhs); | |
8348 | COMPOUND_ASSIGN_P (rhs) = 1; | |
8349 | } | |
8350 | assignment = build (MODIFY_EXPR, NULL_TREE, lhs, rhs); | |
8351 | TREE_SIDE_EFFECTS (assignment) = 1; | |
8352 | EXPR_WFL_LINECOL (assignment) = op_location; | |
8353 | return assignment; | |
8354 | } | |
8355 | ||
8356 | /* Print an INTEGER_CST node in a static buffer, and return the buffer. */ | |
8357 | ||
15fdcfe9 | 8358 | char * |
e04a16fb AG |
8359 | print_int_node (node) |
8360 | tree node; | |
8361 | { | |
8362 | static char buffer [80]; | |
8363 | if (TREE_CONSTANT_OVERFLOW (node)) | |
8364 | sprintf (buffer, "<overflow>"); | |
8365 | ||
8366 | if (TREE_INT_CST_HIGH (node) == 0) | |
8367 | sprintf (buffer, HOST_WIDE_INT_PRINT_UNSIGNED, | |
8368 | TREE_INT_CST_LOW (node)); | |
8369 | else if (TREE_INT_CST_HIGH (node) == -1 | |
8370 | && TREE_INT_CST_LOW (node) != 0) | |
8371 | { | |
8372 | buffer [0] = '-'; | |
8373 | sprintf (&buffer [1], HOST_WIDE_INT_PRINT_UNSIGNED, | |
8374 | -TREE_INT_CST_LOW (node)); | |
8375 | } | |
8376 | else | |
8377 | sprintf (buffer, HOST_WIDE_INT_PRINT_DOUBLE_HEX, | |
8378 | TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node)); | |
8379 | ||
8380 | return buffer; | |
8381 | } | |
8382 | ||
5e942c50 APB |
8383 | /* Return 1 if you an assignment of a FINAL is attempted */ |
8384 | ||
8385 | static int | |
8386 | check_final_assignment (lvalue, wfl) | |
8387 | tree lvalue, wfl; | |
8388 | { | |
34f4db93 | 8389 | if (JDECL_P (lvalue) && FIELD_FINAL (lvalue) && |
7525cc04 | 8390 | DECL_NAME (current_function_decl) != clinit_identifier_node) |
5e942c50 APB |
8391 | { |
8392 | parse_error_context | |
8393 | (wfl, "Can't assign a value to the final variable `%s'", | |
8394 | IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl))); | |
8395 | return 1; | |
8396 | } | |
8397 | return 0; | |
8398 | } | |
8399 | ||
8400 | /* Inline references to java.lang.PRIMTYPE.TYPE when accessed in | |
8401 | read. This is needed to avoid circularities in the implementation | |
8402 | of these fields in libjava. */ | |
8403 | ||
8404 | static tree | |
8405 | maybe_build_primttype_type_ref (rhs, wfl) | |
8406 | tree rhs, wfl; | |
8407 | { | |
8408 | tree to_return = NULL_TREE; | |
8409 | tree rhs_type = TREE_TYPE (rhs); | |
8410 | if (TREE_CODE (rhs) == COMPOUND_EXPR) | |
8411 | { | |
8412 | tree n = TREE_OPERAND (rhs, 1); | |
8413 | if (TREE_CODE (n) == VAR_DECL | |
8414 | && DECL_NAME (n) == TYPE_identifier_node | |
8415 | && rhs_type == class_ptr_type) | |
8416 | { | |
8417 | char *self_name = IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)); | |
8418 | if (!strncmp (self_name, "java.lang.", 10)) | |
8419 | to_return = build_primtype_type_ref (self_name); | |
8420 | } | |
8421 | } | |
8422 | return (to_return ? to_return : rhs ); | |
8423 | } | |
8424 | ||
e04a16fb AG |
8425 | /* 15.25 Assignment operators. */ |
8426 | ||
8427 | static tree | |
8428 | patch_assignment (node, wfl_op1, wfl_op2) | |
8429 | tree node; | |
8430 | tree wfl_op1; | |
8431 | tree wfl_op2; | |
8432 | { | |
0a2138e2 | 8433 | tree rhs = TREE_OPERAND (node, 1); |
5e942c50 | 8434 | tree lvalue = TREE_OPERAND (node, 0), llvalue; |
e04a16fb | 8435 | tree lhs_type, rhs_type, new_rhs = NULL_TREE; |
e04a16fb AG |
8436 | int error_found = 0; |
8437 | int lvalue_from_array = 0; | |
8438 | ||
8439 | /* Can't assign to a final. */ | |
5e942c50 APB |
8440 | if (check_final_assignment (lvalue, wfl_op1)) |
8441 | error_found = 1; | |
e04a16fb AG |
8442 | |
8443 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
8444 | ||
8445 | /* Lhs can be a named variable */ | |
34f4db93 | 8446 | if (JDECL_P (lvalue)) |
e04a16fb AG |
8447 | { |
8448 | INITIALIZED_P (lvalue) = 1; | |
8449 | lhs_type = TREE_TYPE (lvalue); | |
8450 | } | |
8451 | /* Or Lhs can be a array acccess. Should that be lvalue ? FIXME + | |
8452 | comment on reason why */ | |
8453 | else if (TREE_CODE (wfl_op1) == ARRAY_REF) | |
8454 | { | |
8455 | lhs_type = TREE_TYPE (lvalue); | |
8456 | lvalue_from_array = 1; | |
8457 | } | |
8458 | /* Or a field access */ | |
8459 | else if (TREE_CODE (lvalue) == COMPONENT_REF) | |
8460 | lhs_type = TREE_TYPE (lvalue); | |
8461 | /* Or a function return slot */ | |
8462 | else if (TREE_CODE (lvalue) == RESULT_DECL) | |
8463 | lhs_type = TREE_TYPE (lvalue); | |
5e942c50 APB |
8464 | /* Otherwise, we might want to try to write into an optimized static |
8465 | final, this is an of a different nature, reported further on. */ | |
8466 | else if (TREE_CODE (wfl_op1) == EXPR_WITH_FILE_LOCATION | |
8467 | && resolve_expression_name (wfl_op1, &llvalue) | |
8468 | && check_final_assignment (llvalue, wfl_op1)) | |
8469 | { | |
8470 | error_found = 1; | |
8471 | /* What we should do instead is resetting the all the flags | |
8472 | previously set, exchange lvalue for llvalue and continue. */ | |
8473 | return error_mark_node; | |
8474 | } | |
8475 | else | |
e04a16fb AG |
8476 | { |
8477 | parse_error_context (wfl_op1, "Invalid left hand side of assignment"); | |
8478 | error_found = 1; | |
8479 | } | |
8480 | ||
8481 | rhs_type = TREE_TYPE (rhs); | |
b67d701b | 8482 | /* 5.1 Try the assignment conversion for builtin type. */ |
0a2138e2 | 8483 | new_rhs = try_builtin_assignconv (wfl_op1, lhs_type, rhs); |
e04a16fb | 8484 | |
b67d701b | 8485 | /* 5.2 If it failed, try a reference conversion */ |
0a2138e2 | 8486 | if (!new_rhs && (new_rhs = try_reference_assignconv (lhs_type, rhs))) |
b67d701b | 8487 | lhs_type = promote_type (rhs_type); |
e04a16fb AG |
8488 | |
8489 | /* 15.25.2 If we have a compound assignment, convert RHS into the | |
8490 | type of the LHS */ | |
8491 | else if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1))) | |
8492 | new_rhs = convert (lhs_type, rhs); | |
8493 | ||
8494 | /* Explicit cast required. This is an error */ | |
8495 | if (!new_rhs) | |
8496 | { | |
0a2138e2 APB |
8497 | char *t1 = strdup (lang_printable_name (TREE_TYPE (rhs), 0)); |
8498 | char *t2 = strdup (lang_printable_name (lhs_type, 0)); | |
e04a16fb AG |
8499 | tree wfl; |
8500 | char operation [32]; /* Max size known */ | |
8501 | ||
8502 | /* If the assignment is part of a declaration, we use the WFL of | |
8503 | the declared variable to point out the error and call it a | |
8504 | declaration problem. If the assignment is a genuine = | |
8505 | operator, we call is a operator `=' problem, otherwise we | |
8506 | call it an assignment problem. In both of these last cases, | |
8507 | we use the WFL of the operator to indicate the error. */ | |
8508 | ||
8509 | if (MODIFY_EXPR_FROM_INITIALIZATION_P (node)) | |
8510 | { | |
8511 | wfl = wfl_op1; | |
8512 | strcpy (operation, "declaration"); | |
8513 | } | |
8514 | else | |
8515 | { | |
8516 | wfl = wfl_operator; | |
8517 | if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1))) | |
8518 | strcpy (operation, "assignment"); | |
8519 | else if (TREE_CODE (TREE_OPERAND (node, 0)) == RESULT_DECL) | |
8520 | strcpy (operation, "`return'"); | |
8521 | else | |
8522 | strcpy (operation, "`='"); | |
8523 | } | |
8524 | ||
8525 | parse_error_context | |
b67d701b | 8526 | (wfl, (!valid_cast_to_p (rhs_type, lhs_type) ? |
e04a16fb AG |
8527 | "Incompatible type for %s. Can't convert `%s' to `%s'" : |
8528 | "Incompatible type for %s. Explicit cast " | |
8529 | "needed to convert `%s' to `%s'"), operation, t1, t2); | |
8530 | free (t1); free (t2); | |
8531 | error_found = 1; | |
8532 | } | |
8533 | ||
c877974e APB |
8534 | /* Inline read access to java.lang.PRIMTYPE.TYPE */ |
8535 | if (new_rhs) | |
8536 | new_rhs = maybe_build_primttype_type_ref (new_rhs, wfl_op2); | |
5e942c50 | 8537 | |
e04a16fb AG |
8538 | if (error_found) |
8539 | return error_mark_node; | |
8540 | ||
8541 | /* If we built a compound expression as the result of a reference | |
8542 | assignment into an array element, return it here. */ | |
8543 | if (TREE_CODE (node) == COMPOUND_EXPR) | |
8544 | return node; | |
22eed1e6 | 8545 | |
e04a16fb AG |
8546 | TREE_OPERAND (node, 0) = lvalue; |
8547 | TREE_OPERAND (node, 1) = new_rhs; | |
8548 | TREE_TYPE (node) = lhs_type; | |
8549 | return node; | |
8550 | } | |
8551 | ||
7525cc04 APB |
8552 | /* Optimize static (final) field initialized upon declaration. |
8553 | - If the field is static final and is assigned to a primitive | |
8554 | constant type, then set its DECL_INITIAL to the value. | |
8555 | - More to come. */ | |
8556 | ||
8557 | static tree | |
8558 | patch_initialized_static_field (node) | |
8559 | tree node; | |
8560 | { | |
8561 | tree field = TREE_OPERAND (node, 0); | |
8562 | tree value = TREE_OPERAND (node, 1); | |
8563 | ||
5b09b33e | 8564 | if (DECL_INITIAL (field) != NULL_TREE) |
7525cc04 | 8565 | { |
5b09b33e PB |
8566 | tree type = TREE_TYPE (value); |
8567 | if (FIELD_FINAL (field) && TREE_CONSTANT (value) | |
8568 | && (JPRIMITIVE_TYPE_P (type) | |
8569 | || (flag_emit_class_files | |
8570 | && TREE_CODE (type) == POINTER_TYPE | |
8571 | && TREE_TYPE (type) == string_type_node))) | |
8572 | { | |
8573 | DECL_INITIAL (field) = value; | |
8574 | return empty_stmt_node; | |
8575 | } | |
8576 | DECL_INITIAL (field) = NULL_TREE; | |
7525cc04 APB |
8577 | } |
8578 | return node; | |
8579 | } | |
8580 | ||
b67d701b PB |
8581 | /* Check that type SOURCE can be cast into type DEST. If the cast |
8582 | can't occur at all, return 0 otherwise 1. This function is used to | |
8583 | produce accurate error messages on the reasons why an assignment | |
8584 | failed. */ | |
e04a16fb | 8585 | |
b67d701b PB |
8586 | static tree |
8587 | try_reference_assignconv (lhs_type, rhs) | |
8588 | tree lhs_type, rhs; | |
e04a16fb | 8589 | { |
b67d701b PB |
8590 | tree new_rhs = NULL_TREE; |
8591 | tree rhs_type = TREE_TYPE (rhs); | |
e04a16fb | 8592 | |
b67d701b PB |
8593 | if (!JPRIMITIVE_TYPE_P (rhs_type) && JREFERENCE_TYPE_P (lhs_type)) |
8594 | { | |
8595 | /* `null' may be assigned to any reference type */ | |
8596 | if (rhs == null_pointer_node) | |
8597 | new_rhs = null_pointer_node; | |
8598 | /* Try the reference assignment conversion */ | |
8599 | else if (valid_ref_assignconv_cast_p (rhs_type, lhs_type, 0)) | |
8600 | new_rhs = rhs; | |
8601 | /* This is a magic assignment that we process differently */ | |
8602 | else if (rhs == soft_exceptioninfo_call_node) | |
8603 | new_rhs = rhs; | |
8604 | } | |
8605 | return new_rhs; | |
8606 | } | |
8607 | ||
8608 | /* Check that RHS can be converted into LHS_TYPE by the assignment | |
8609 | conversion (5.2), for the cases of RHS being a builtin type. Return | |
8610 | NULL_TREE if the conversion fails or if because RHS isn't of a | |
8611 | builtin type. Return a converted RHS if the conversion is possible. */ | |
8612 | ||
8613 | static tree | |
8614 | try_builtin_assignconv (wfl_op1, lhs_type, rhs) | |
8615 | tree wfl_op1, lhs_type, rhs; | |
8616 | { | |
8617 | tree new_rhs = NULL_TREE; | |
8618 | tree rhs_type = TREE_TYPE (rhs); | |
8619 | ||
5e942c50 APB |
8620 | /* Zero accepted everywhere */ |
8621 | if (TREE_CODE (rhs) == INTEGER_CST | |
8622 | && TREE_INT_CST_HIGH (rhs) == 0 && TREE_INT_CST_LOW (rhs) == 0 | |
8623 | && JPRIMITIVE_TYPE_P (rhs_type)) | |
8624 | new_rhs = convert (lhs_type, rhs); | |
8625 | ||
b67d701b PB |
8626 | /* 5.1.1 Try Identity Conversion, |
8627 | 5.1.2 Try Widening Primitive Conversion */ | |
5e942c50 | 8628 | else if (valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type)) |
b67d701b PB |
8629 | new_rhs = convert (lhs_type, rhs); |
8630 | ||
8631 | /* Try a narrowing primitive conversion (5.1.3): | |
8632 | - expression is a constant expression of type int AND | |
8633 | - variable is byte, short or char AND | |
8634 | - The value of the expression is representable in the type of the | |
8635 | variable */ | |
8636 | else if (rhs_type == int_type_node && TREE_CONSTANT (rhs) | |
8637 | && (lhs_type == byte_type_node || lhs_type == char_type_node | |
8638 | || lhs_type == short_type_node)) | |
8639 | { | |
8640 | if (int_fits_type_p (rhs, lhs_type)) | |
8641 | new_rhs = convert (lhs_type, rhs); | |
8642 | else if (wfl_op1) /* Might be called with a NULL */ | |
8643 | parse_warning_context | |
8644 | (wfl_op1, "Constant expression `%s' to wide for narrowing " | |
8645 | "primitive conversion to `%s'", | |
0a2138e2 | 8646 | print_int_node (rhs), lang_printable_name (lhs_type, 0)); |
b67d701b PB |
8647 | /* Reported a warning that will turn into an error further |
8648 | down, so we don't return */ | |
8649 | } | |
8650 | ||
8651 | return new_rhs; | |
8652 | } | |
8653 | ||
8654 | /* Return 1 if RHS_TYPE can be converted to LHS_TYPE by identity | |
8655 | conversion (5.1.1) or widening primitve conversion (5.1.2). Return | |
8656 | 0 is the conversion test fails. This implements parts the method | |
8657 | invocation convertion (5.3). */ | |
8658 | ||
8659 | static int | |
8660 | valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type) | |
8661 | tree lhs_type, rhs_type; | |
8662 | { | |
acd663ee | 8663 | /* 5.1.1: This is the identity conversion part. */ |
5e942c50 APB |
8664 | if (lhs_type == rhs_type) |
8665 | return 1; | |
8666 | ||
acd663ee APB |
8667 | /* Reject non primitive types */ |
8668 | if (!JPRIMITIVE_TYPE_P (lhs_type) || !JPRIMITIVE_TYPE_P (rhs_type)) | |
b67d701b PB |
8669 | return 0; |
8670 | ||
acd663ee APB |
8671 | /* 5.1.2: widening primitive conversion. byte, even if it's smaller |
8672 | than a char can't be converted into a char. Short can't too, but | |
8673 | the < test below takes care of that */ | |
b67d701b PB |
8674 | if (lhs_type == char_type_node && rhs_type == byte_type_node) |
8675 | return 0; | |
8676 | ||
5e942c50 APB |
8677 | /* Accept all promoted type here. Note, we can't use <= in the test |
8678 | below, because we still need to bounce out assignments of short | |
8679 | to char and the likes */ | |
8680 | if (lhs_type == int_type_node | |
8681 | && (rhs_type == promoted_byte_type_node | |
8682 | || rhs_type == promoted_short_type_node | |
8683 | || rhs_type == promoted_char_type_node | |
8684 | || rhs_type == promoted_boolean_type_node)) | |
8685 | return 1; | |
8686 | ||
acd663ee APB |
8687 | /* From here, an integral is widened if its precision is smaller |
8688 | than the precision of the LHS or if the LHS is a floating point | |
8689 | type, or the RHS is a float and the RHS a double. */ | |
8690 | if ((JINTEGRAL_TYPE_P (rhs_type) && JINTEGRAL_TYPE_P (lhs_type) | |
8691 | && (TYPE_PRECISION (rhs_type) < TYPE_PRECISION (lhs_type))) | |
8692 | || (JINTEGRAL_TYPE_P (rhs_type) && JFLOAT_TYPE_P (lhs_type)) | |
8693 | || (rhs_type == float_type_node && lhs_type == double_type_node)) | |
b67d701b PB |
8694 | return 1; |
8695 | ||
8696 | return 0; | |
e04a16fb AG |
8697 | } |
8698 | ||
8699 | /* Check that something of SOURCE type can be assigned or cast to | |
8700 | something of DEST type at runtime. Return 1 if the operation is | |
8701 | valid, 0 otherwise. If CAST is set to 1, we're treating the case | |
8702 | were SOURCE is cast into DEST, which borrows a lot of the | |
8703 | assignment check. */ | |
8704 | ||
8705 | static int | |
8706 | valid_ref_assignconv_cast_p (source, dest, cast) | |
8707 | tree source; | |
8708 | tree dest; | |
8709 | int cast; | |
8710 | { | |
09ed0f70 APB |
8711 | /* SOURCE or DEST might be null if not from a declared entity. */ |
8712 | if (!source || !dest) | |
8713 | return 0; | |
5e942c50 APB |
8714 | if (JNULLP_TYPE_P (source)) |
8715 | return 1; | |
e04a16fb AG |
8716 | if (TREE_CODE (source) == POINTER_TYPE) |
8717 | source = TREE_TYPE (source); | |
8718 | if (TREE_CODE (dest) == POINTER_TYPE) | |
8719 | dest = TREE_TYPE (dest); | |
8720 | /* Case where SOURCE is a class type */ | |
8721 | if (TYPE_CLASS_P (source)) | |
8722 | { | |
8723 | if (TYPE_CLASS_P (dest)) | |
8724 | return source == dest || inherits_from_p (source, dest) | |
0a2138e2 | 8725 | || (cast && inherits_from_p (dest, source)); |
e04a16fb AG |
8726 | if (TYPE_INTERFACE_P (dest)) |
8727 | { | |
8728 | /* If doing a cast and SOURCE is final, the operation is | |
8729 | always correct a compile time (because even if SOURCE | |
8730 | does not implement DEST, a subclass of SOURCE might). */ | |
8731 | if (cast && !CLASS_FINAL (TYPE_NAME (source))) | |
8732 | return 1; | |
8733 | /* Otherwise, SOURCE must implement DEST */ | |
8734 | return interface_of_p (dest, source); | |
8735 | } | |
8736 | /* DEST is an array, cast permited if SOURCE is of Object type */ | |
8737 | return (cast && source == object_type_node ? 1 : 0); | |
8738 | } | |
8739 | if (TYPE_INTERFACE_P (source)) | |
8740 | { | |
8741 | if (TYPE_CLASS_P (dest)) | |
8742 | { | |
8743 | /* If not casting, DEST must be the Object type */ | |
8744 | if (!cast) | |
8745 | return dest == object_type_node; | |
8746 | /* We're doing a cast. The cast is always valid is class | |
8747 | DEST is not final, otherwise, DEST must implement SOURCE */ | |
b67d701b | 8748 | else if (!CLASS_FINAL (TYPE_NAME (dest))) |
e04a16fb AG |
8749 | return 1; |
8750 | else | |
8751 | return interface_of_p (source, dest); | |
8752 | } | |
8753 | if (TYPE_INTERFACE_P (dest)) | |
8754 | { | |
8755 | /* If doing a cast, then if SOURCE and DEST contain method | |
8756 | with the same signature but different return type, then | |
8757 | this is a (compile time) error */ | |
8758 | if (cast) | |
8759 | { | |
8760 | tree method_source, method_dest; | |
8761 | tree source_type; | |
0a2138e2 | 8762 | tree source_sig; |
e04a16fb AG |
8763 | tree source_name; |
8764 | for (method_source = TYPE_METHODS (source); method_source; | |
8765 | method_source = TREE_CHAIN (method_source)) | |
8766 | { | |
8767 | source_sig = | |
8768 | build_java_argument_signature (TREE_TYPE (method_source)); | |
8769 | source_type = TREE_TYPE (TREE_TYPE (method_source)); | |
8770 | source_name = DECL_NAME (method_source); | |
8771 | for (method_dest = TYPE_METHODS (dest); | |
8772 | method_dest; method_dest = TREE_CHAIN (method_dest)) | |
8773 | if (source_sig == | |
8774 | build_java_argument_signature (TREE_TYPE (method_dest)) | |
8775 | && source_name == DECL_NAME (method_dest) | |
8776 | && source_type != TREE_TYPE (TREE_TYPE (method_dest))) | |
8777 | return 0; | |
8778 | } | |
8779 | return 1; | |
8780 | } | |
8781 | else | |
8782 | return source == dest || interface_of_p (dest, source); | |
8783 | } | |
8784 | else /* Array */ | |
8785 | return 0; | |
8786 | } | |
8787 | if (TYPE_ARRAY_P (source)) | |
8788 | { | |
8789 | if (TYPE_CLASS_P (dest)) | |
8790 | return dest == object_type_node; | |
09ed0f70 APB |
8791 | /* Can't cast an array to an interface unless the interface is |
8792 | java.lang.Cloneable */ | |
e04a16fb | 8793 | if (TYPE_INTERFACE_P (dest)) |
09ed0f70 | 8794 | return (DECL_NAME (TYPE_NAME (dest)) == java_lang_cloneable ? 1 : 0); |
e04a16fb AG |
8795 | else /* Arrays */ |
8796 | { | |
8797 | tree source_element_type = TYPE_ARRAY_ELEMENT (source); | |
8798 | tree dest_element_type = TYPE_ARRAY_ELEMENT (dest); | |
8799 | ||
b9f7e36c APB |
8800 | /* In case of severe errors, they turn out null */ |
8801 | if (!dest_element_type || !source_element_type) | |
8802 | return 0; | |
e04a16fb AG |
8803 | if (source_element_type == dest_element_type) |
8804 | return 1; | |
8805 | return valid_ref_assignconv_cast_p (source_element_type, | |
8806 | dest_element_type, cast); | |
8807 | } | |
8808 | return 0; | |
8809 | } | |
8810 | return 0; | |
8811 | } | |
8812 | ||
b67d701b PB |
8813 | static int |
8814 | valid_cast_to_p (source, dest) | |
8815 | tree source; | |
8816 | tree dest; | |
8817 | { | |
8818 | if (TREE_CODE (source) == POINTER_TYPE) | |
8819 | source = TREE_TYPE (source); | |
8820 | if (TREE_CODE (dest) == POINTER_TYPE) | |
8821 | dest = TREE_TYPE (dest); | |
8822 | ||
8823 | if (TREE_CODE (source) == RECORD_TYPE && TREE_CODE (dest) == RECORD_TYPE) | |
8824 | return valid_ref_assignconv_cast_p (source, dest, 1); | |
8825 | ||
8826 | else if (JNUMERIC_TYPE_P (source) && JNUMERIC_TYPE_P (dest)) | |
8827 | return 1; | |
8828 | ||
8829 | return 0; | |
8830 | } | |
8831 | ||
8832 | /* Method invocation conversion test. Return 1 if type SOURCE can be | |
8833 | converted to type DEST through the methond invocation conversion | |
8834 | process (5.3) */ | |
8835 | ||
15fdcfe9 PB |
8836 | static tree |
8837 | do_unary_numeric_promotion (arg) | |
8838 | tree arg; | |
8839 | { | |
8840 | tree type = TREE_TYPE (arg); | |
8841 | if (TREE_CODE (type) == INTEGER_TYPE ? TYPE_PRECISION (type) < 32 | |
8842 | : TREE_CODE (type) == CHAR_TYPE) | |
8843 | arg = convert (int_type_node, arg); | |
8844 | return arg; | |
8845 | } | |
8846 | ||
acd663ee APB |
8847 | /* Return a non zero value if SOURCE can be converted into DEST using |
8848 | the method invocation conversion rule (5.3). */ | |
b67d701b PB |
8849 | static int |
8850 | valid_method_invocation_conversion_p (dest, source) | |
8851 | tree dest, source; | |
8852 | { | |
e3884b71 | 8853 | return ((JPRIMITIVE_TYPE_P (source) && JPRIMITIVE_TYPE_P (dest) |
acd663ee APB |
8854 | && valid_builtin_assignconv_identity_widening_p (dest, source)) |
8855 | || ((JREFERENCE_TYPE_P (source) || JNULLP_TYPE_P (source)) | |
8856 | && (JREFERENCE_TYPE_P (dest) || JNULLP_TYPE_P (dest)) | |
8857 | && valid_ref_assignconv_cast_p (source, dest, 0))); | |
b67d701b PB |
8858 | } |
8859 | ||
e04a16fb AG |
8860 | /* Build an incomplete binop expression. */ |
8861 | ||
8862 | static tree | |
8863 | build_binop (op, op_location, op1, op2) | |
8864 | enum tree_code op; | |
8865 | int op_location; | |
8866 | tree op1, op2; | |
8867 | { | |
5e942c50 | 8868 | tree binop = build (op, NULL_TREE, op1, op2); |
e04a16fb AG |
8869 | TREE_SIDE_EFFECTS (binop) = 1; |
8870 | /* Store the location of the operator, for better error report. The | |
8871 | string of the operator will be rebuild based on the OP value. */ | |
8872 | EXPR_WFL_LINECOL (binop) = op_location; | |
8873 | return binop; | |
8874 | } | |
8875 | ||
8876 | /* Build the string of the operator retained by NODE. If NODE is part | |
8877 | of a compound expression, add an '=' at the end of the string. This | |
8878 | function is called when an error needs to be reported on an | |
8879 | operator. The string is returned as a pointer to a static character | |
8880 | buffer. */ | |
8881 | ||
8882 | static char * | |
8883 | operator_string (node) | |
8884 | tree node; | |
8885 | { | |
8886 | #define BUILD_OPERATOR_STRING(S) \ | |
8887 | { \ | |
8888 | sprintf (buffer, "%s%s", S, (COMPOUND_ASSIGN_P (node) ? "=" : "")); \ | |
8889 | return buffer; \ | |
8890 | } | |
8891 | ||
8892 | static char buffer [10]; | |
8893 | switch (TREE_CODE (node)) | |
8894 | { | |
8895 | case MULT_EXPR: BUILD_OPERATOR_STRING ("*"); | |
8896 | case RDIV_EXPR: BUILD_OPERATOR_STRING ("/"); | |
8897 | case TRUNC_MOD_EXPR: BUILD_OPERATOR_STRING ("%"); | |
8898 | case PLUS_EXPR: BUILD_OPERATOR_STRING ("+"); | |
8899 | case MINUS_EXPR: BUILD_OPERATOR_STRING ("-"); | |
8900 | case LSHIFT_EXPR: BUILD_OPERATOR_STRING ("<<"); | |
8901 | case RSHIFT_EXPR: BUILD_OPERATOR_STRING (">>"); | |
8902 | case URSHIFT_EXPR: BUILD_OPERATOR_STRING (">>>"); | |
8903 | case BIT_AND_EXPR: BUILD_OPERATOR_STRING ("&"); | |
8904 | case BIT_XOR_EXPR: BUILD_OPERATOR_STRING ("^"); | |
8905 | case BIT_IOR_EXPR: BUILD_OPERATOR_STRING ("|"); | |
8906 | case TRUTH_ANDIF_EXPR: BUILD_OPERATOR_STRING ("&&"); | |
8907 | case TRUTH_ORIF_EXPR: BUILD_OPERATOR_STRING ("||"); | |
8908 | case EQ_EXPR: BUILD_OPERATOR_STRING ("=="); | |
8909 | case NE_EXPR: BUILD_OPERATOR_STRING ("!="); | |
8910 | case GT_EXPR: BUILD_OPERATOR_STRING (">"); | |
8911 | case GE_EXPR: BUILD_OPERATOR_STRING (">="); | |
8912 | case LT_EXPR: BUILD_OPERATOR_STRING ("<"); | |
8913 | case LE_EXPR: BUILD_OPERATOR_STRING ("<="); | |
b67d701b | 8914 | case UNARY_PLUS_EXPR: BUILD_OPERATOR_STRING ("+"); |
e04a16fb AG |
8915 | case NEGATE_EXPR: BUILD_OPERATOR_STRING ("-"); |
8916 | case TRUTH_NOT_EXPR: BUILD_OPERATOR_STRING ("!"); | |
8917 | case BIT_NOT_EXPR: BUILD_OPERATOR_STRING ("~"); | |
8918 | case PREINCREMENT_EXPR: /* Fall through */ | |
8919 | case POSTINCREMENT_EXPR: BUILD_OPERATOR_STRING ("++"); | |
8920 | case PREDECREMENT_EXPR: /* Fall through */ | |
8921 | case POSTDECREMENT_EXPR: BUILD_OPERATOR_STRING ("--"); | |
8922 | default: | |
8923 | fatal ("unregistered operator %s - operator_string", | |
8924 | tree_code_name [TREE_CODE (node)]); | |
8925 | } | |
8926 | return NULL; | |
8927 | #undef BUILD_OPERATOR_STRING | |
8928 | } | |
8929 | ||
8930 | /* Binary operators (15.16 up to 15.18). We return error_mark_node on | |
8931 | errors but we modify NODE so that it contains the type computed | |
8932 | according to the expression, when it's fixed. Otherwise, we write | |
8933 | error_mark_node as the type. It allows us to further the analysis | |
8934 | of remaining nodes and detects more errors in certain cases. */ | |
8935 | ||
8936 | static tree | |
8937 | patch_binop (node, wfl_op1, wfl_op2) | |
8938 | tree node; | |
8939 | tree wfl_op1; | |
8940 | tree wfl_op2; | |
8941 | { | |
8942 | tree op1 = TREE_OPERAND (node, 0); | |
8943 | tree op2 = TREE_OPERAND (node, 1); | |
8944 | tree op1_type = TREE_TYPE (op1); | |
8945 | tree op2_type = TREE_TYPE (op2); | |
8946 | tree prom_type; | |
8947 | int code = TREE_CODE (node); | |
b67d701b | 8948 | |
e04a16fb AG |
8949 | /* If 1, tell the routine that we have to return error_mark_node |
8950 | after checking for the initialization of the RHS */ | |
8951 | int error_found = 0; | |
8952 | ||
e04a16fb AG |
8953 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); |
8954 | ||
e04a16fb AG |
8955 | switch (code) |
8956 | { | |
8957 | /* 15.16 Multiplicative operators */ | |
8958 | case MULT_EXPR: /* 15.16.1 Multiplication Operator * */ | |
8959 | case RDIV_EXPR: /* 15.16.2 Division Operator / */ | |
8960 | case TRUNC_MOD_EXPR: /* 15.16.3 Remainder operator % */ | |
8961 | if (!JPRIMITIVE_TYPE_P (op1_type) || !JPRIMITIVE_TYPE_P (op2_type)) | |
8962 | { | |
8963 | if (!JPRIMITIVE_TYPE_P (op1_type)) | |
8964 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type); | |
8965 | if (!JPRIMITIVE_TYPE_P (op2_type) && (op1_type != op2_type)) | |
8966 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type); | |
8967 | TREE_TYPE (node) = error_mark_node; | |
8968 | error_found = 1; | |
8969 | break; | |
8970 | } | |
8971 | prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2); | |
8972 | /* Change the division operator if necessary */ | |
8973 | if (code == RDIV_EXPR && TREE_CODE (prom_type) == INTEGER_TYPE) | |
8974 | TREE_SET_CODE (node, TRUNC_DIV_EXPR); | |
0b4d333e APB |
8975 | |
8976 | /* This one is more complicated. FLOATs are processed by a | |
8977 | function call to soft_fmod. Duplicate the value of the | |
8978 | COMPOUND_ASSIGN_P flag. */ | |
e04a16fb | 8979 | if (code == TRUNC_MOD_EXPR) |
0b4d333e APB |
8980 | { |
8981 | tree mod = build_java_binop (TRUNC_MOD_EXPR, prom_type, op1, op2); | |
8982 | COMPOUND_ASSIGN_P (mod) = COMPOUND_ASSIGN_P (node); | |
dc0b3eff PB |
8983 | TREE_SIDE_EFFECTS (mod) |
8984 | = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2); | |
0b4d333e APB |
8985 | return mod; |
8986 | } | |
e04a16fb AG |
8987 | break; |
8988 | ||
8989 | /* 15.17 Additive Operators */ | |
8990 | case PLUS_EXPR: /* 15.17.1 String Concatenation Operator + */ | |
b67d701b PB |
8991 | |
8992 | /* Operation is valid if either one argument is a string | |
8993 | constant, a String object or a StringBuffer crafted for the | |
8994 | purpose of the a previous usage of the String concatenation | |
8995 | operator */ | |
8996 | ||
8997 | if (TREE_CODE (op1) == STRING_CST | |
8998 | || TREE_CODE (op2) == STRING_CST | |
8999 | || JSTRING_TYPE_P (op1_type) | |
9000 | || JSTRING_TYPE_P (op2_type) | |
9001 | || IS_CRAFTED_STRING_BUFFER_P (op1) | |
9002 | || IS_CRAFTED_STRING_BUFFER_P (op2)) | |
9003 | return build_string_concatenation (op1, op2); | |
9004 | ||
e04a16fb AG |
9005 | case MINUS_EXPR: /* 15.17.2 Additive Operators (+ and -) for |
9006 | Numeric Types */ | |
9007 | if (!JPRIMITIVE_TYPE_P (op1_type) || !JPRIMITIVE_TYPE_P (op2_type)) | |
9008 | { | |
9009 | if (!JPRIMITIVE_TYPE_P (op1_type)) | |
9010 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type); | |
9011 | if (!JPRIMITIVE_TYPE_P (op2_type) && (op1_type != op2_type)) | |
9012 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type); | |
9013 | TREE_TYPE (node) = error_mark_node; | |
9014 | error_found = 1; | |
9015 | break; | |
9016 | } | |
9017 | prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2); | |
9018 | break; | |
9019 | ||
9020 | /* 15.18 Shift Operators */ | |
9021 | case LSHIFT_EXPR: | |
9022 | case RSHIFT_EXPR: | |
9023 | case URSHIFT_EXPR: | |
9024 | if (!JINTEGRAL_TYPE_P (op1_type) || !JINTEGRAL_TYPE_P (op2_type)) | |
9025 | { | |
9026 | if (!JINTEGRAL_TYPE_P (op1_type)) | |
9027 | ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type); | |
9028 | else | |
9029 | parse_error_context | |
9030 | (wfl_operator, (JPRIMITIVE_TYPE_P (op2_type) ? | |
9031 | "Incompatible type for `%s'. Explicit cast needed to convert " | |
9032 | "shift distance from `%s' to integral" : | |
9033 | "Incompatible type for `%s'. Can't convert shift distance from " | |
9034 | "`%s' to integral"), | |
0a2138e2 | 9035 | operator_string (node), lang_printable_name (op2_type, 0)); |
e04a16fb AG |
9036 | TREE_TYPE (node) = error_mark_node; |
9037 | error_found = 1; | |
9038 | break; | |
9039 | } | |
9040 | ||
9041 | /* Unary numeric promotion (5.6.1) is performed on each operand | |
9042 | separatly */ | |
15fdcfe9 PB |
9043 | op1 = do_unary_numeric_promotion (op1); |
9044 | op2 = do_unary_numeric_promotion (op2); | |
e04a16fb AG |
9045 | |
9046 | /* The type of the shift expression is the type of the promoted | |
9047 | type of the left-hand operand */ | |
9048 | prom_type = TREE_TYPE (op1); | |
9049 | ||
9050 | /* Shift int only up to 0x1f and long up to 0x3f */ | |
9051 | if (prom_type == int_type_node) | |
9052 | op2 = fold (build (BIT_AND_EXPR, int_type_node, op2, | |
9053 | build_int_2 (0x1f, 0))); | |
9054 | else | |
9055 | op2 = fold (build (BIT_AND_EXPR, int_type_node, op2, | |
9056 | build_int_2 (0x3f, 0))); | |
9057 | ||
9058 | /* The >>> operator is a >> operating on unsigned quantities */ | |
15fdcfe9 | 9059 | if (code == URSHIFT_EXPR && ! flag_emit_class_files) |
e04a16fb | 9060 | { |
0b4d333e | 9061 | tree to_return; |
73333a87 AH |
9062 | tree utype = unsigned_type (prom_type); |
9063 | op1 = convert (utype, op1); | |
e04a16fb | 9064 | TREE_SET_CODE (node, RSHIFT_EXPR); |
73333a87 AH |
9065 | TREE_OPERAND (node, 0) = op1; |
9066 | TREE_OPERAND (node, 1) = op2; | |
9067 | TREE_TYPE (node) = utype; | |
0b4d333e APB |
9068 | to_return = convert (prom_type, node); |
9069 | /* Copy the original value of the COMPOUND_ASSIGN_P flag */ | |
9070 | COMPOUND_ASSIGN_P (to_return) = COMPOUND_ASSIGN_P (node); | |
dc0b3eff PB |
9071 | TREE_SIDE_EFFECTS (to_return) |
9072 | = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2); | |
0b4d333e | 9073 | return to_return; |
e04a16fb AG |
9074 | } |
9075 | break; | |
5e942c50 APB |
9076 | |
9077 | /* 15.19.1 Type Comparison Operator instaceof */ | |
9078 | case INSTANCEOF_EXPR: | |
9079 | ||
9080 | TREE_TYPE (node) = boolean_type_node; | |
9081 | ||
9082 | if (!(op2_type = resolve_type_during_patch (op2))) | |
9083 | return error_mark_node; | |
9084 | ||
9085 | /* The first operand must be a reference type or the null type */ | |
9086 | if (!JREFERENCE_TYPE_P (op1_type) && op1 != null_pointer_node) | |
9087 | error_found = 1; /* Error reported further below */ | |
9088 | ||
9089 | /* The second operand must be a reference type */ | |
9090 | if (!JREFERENCE_TYPE_P (op2_type)) | |
9091 | { | |
9092 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op2); | |
9093 | parse_error_context | |
9094 | (wfl_operator, "Invalid argument `%s' for `instanceof'", | |
9095 | lang_printable_name (op2_type, 0)); | |
9096 | error_found = 1; | |
9097 | } | |
9098 | ||
9099 | if (!error_found && valid_ref_assignconv_cast_p (op1_type, op2_type, 1)) | |
9100 | { | |
9101 | /* If the first operand is null, the result is always false */ | |
9102 | if (op1 == null_pointer_node) | |
9103 | return boolean_false_node; | |
15fdcfe9 PB |
9104 | else if (flag_emit_class_files) |
9105 | { | |
9106 | TREE_OPERAND (node, 1) = op2_type; | |
dc0b3eff | 9107 | TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1); |
15fdcfe9 PB |
9108 | return node; |
9109 | } | |
5e942c50 APB |
9110 | /* Otherwise we have to invoke instance of to figure it out */ |
9111 | else | |
9112 | { | |
9113 | tree call = | |
9114 | build (CALL_EXPR, boolean_type_node, | |
9115 | build_address_of (soft_instanceof_node), | |
9116 | tree_cons | |
9117 | (NULL_TREE, op1, | |
9118 | build_tree_list (NULL_TREE, | |
9119 | build_class_ref (op2_type))), | |
9120 | NULL_TREE); | |
dc0b3eff | 9121 | TREE_SIDE_EFFECTS (call) = TREE_SIDE_EFFECTS (op1); |
5e942c50 APB |
9122 | return call; |
9123 | } | |
9124 | } | |
9125 | /* There is no way the expression operand can be an instance of | |
9126 | the type operand. This is a compile time error. */ | |
9127 | else | |
9128 | { | |
9129 | char *t1 = strdup (lang_printable_name (op1_type, 0)); | |
9130 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op1); | |
9131 | parse_error_context | |
9132 | (wfl_operator, "Impossible for `%s' to be instance of `%s'", | |
9133 | t1, lang_printable_name (op2_type, 0)); | |
9134 | free (t1); | |
9135 | error_found = 1; | |
9136 | } | |
e04a16fb | 9137 | |
5e942c50 | 9138 | break; |
e04a16fb AG |
9139 | |
9140 | /* 15.21 Bitwise and Logical Operators */ | |
9141 | case BIT_AND_EXPR: | |
9142 | case BIT_XOR_EXPR: | |
9143 | case BIT_IOR_EXPR: | |
9144 | if (JINTEGRAL_TYPE_P (op1_type) && JINTEGRAL_TYPE_P (op2_type)) | |
9145 | /* Binary numeric promotion is performed on both operand and the | |
9146 | expression retain that type */ | |
9147 | prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2); | |
9148 | ||
9149 | else if (TREE_CODE (op1_type) == BOOLEAN_TYPE | |
9150 | && TREE_CODE (op1_type) == BOOLEAN_TYPE) | |
9151 | /* The type of the bitwise operator expression is BOOLEAN */ | |
9152 | prom_type = boolean_type_node; | |
9153 | else | |
9154 | { | |
9155 | if (!JINTEGRAL_TYPE_P (op1_type)) | |
9156 | ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type); | |
9157 | if (!JINTEGRAL_TYPE_P (op2_type) && (op1_type != op2_type)) | |
9158 | ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op2_type); | |
9159 | TREE_TYPE (node) = error_mark_node; | |
9160 | error_found = 1; | |
9161 | /* Insert a break here if adding thing before the switch's | |
9162 | break for this case */ | |
9163 | } | |
9164 | break; | |
9165 | ||
9166 | /* 15.22 Conditional-And Operator */ | |
9167 | case TRUTH_ANDIF_EXPR: | |
9168 | /* 15.23 Conditional-Or Operator */ | |
9169 | case TRUTH_ORIF_EXPR: | |
9170 | /* Operands must be of BOOLEAN type */ | |
9171 | if (TREE_CODE (op1_type) != BOOLEAN_TYPE || | |
9172 | TREE_CODE (op2_type) != BOOLEAN_TYPE) | |
9173 | { | |
9174 | if (TREE_CODE (op1_type) != BOOLEAN_TYPE) | |
9175 | ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op1_type); | |
9176 | if (TREE_CODE (op2_type) != BOOLEAN_TYPE && (op1_type != op2_type)) | |
9177 | ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op2_type); | |
9178 | TREE_TYPE (node) = boolean_type_node; | |
9179 | error_found = 1; | |
9180 | break; | |
9181 | } | |
9182 | /* The type of the conditional operators is BOOLEAN */ | |
9183 | prom_type = boolean_type_node; | |
9184 | break; | |
9185 | ||
9186 | /* 15.19.1 Numerical Comparison Operators <, <=, >, >= */ | |
9187 | case LT_EXPR: | |
9188 | case GT_EXPR: | |
9189 | case LE_EXPR: | |
9190 | case GE_EXPR: | |
9191 | /* The type of each of the operands must be a primitive numeric | |
9192 | type */ | |
9193 | if (!JNUMERIC_TYPE_P (op1_type) || ! JNUMERIC_TYPE_P (op2_type)) | |
9194 | { | |
9195 | if (!JNUMERIC_TYPE_P (op1_type)) | |
9196 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type); | |
9197 | if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type)) | |
9198 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type); | |
9199 | TREE_TYPE (node) = boolean_type_node; | |
9200 | error_found = 1; | |
9201 | break; | |
9202 | } | |
9203 | /* Binary numeric promotion is performed on the operands */ | |
9204 | binary_numeric_promotion (op1_type, op2_type, &op1, &op2); | |
9205 | /* The type of the relation expression is always BOOLEAN */ | |
9206 | prom_type = boolean_type_node; | |
9207 | break; | |
9208 | ||
9209 | /* 15.20 Equality Operator */ | |
9210 | case EQ_EXPR: | |
9211 | case NE_EXPR: | |
9212 | /* 15.20.1 Numerical Equality Operators == and != */ | |
9213 | /* Binary numeric promotion is performed on the operands */ | |
5e942c50 | 9214 | if (JNUMERIC_TYPE_P (op1_type) && JNUMERIC_TYPE_P (op2_type)) |
e04a16fb AG |
9215 | binary_numeric_promotion (op1_type, op2_type, &op1, &op2); |
9216 | ||
9217 | /* 15.20.2 Boolean Equality Operators == and != */ | |
9218 | else if (TREE_CODE (op1_type) == BOOLEAN_TYPE && | |
9219 | TREE_CODE (op2_type) == BOOLEAN_TYPE) | |
9220 | ; /* Nothing to do here */ | |
9221 | ||
9222 | /* 15.20.3 Reference Equality Operators == and != */ | |
5e942c50 APB |
9223 | /* Types have to be either references or the null type. If |
9224 | they're references, it must be possible to convert either | |
9225 | type to the other by casting conversion. */ | |
b9f7e36c APB |
9226 | else if (op1 == null_pointer_node || op2 == null_pointer_node |
9227 | || (JREFERENCE_TYPE_P (op1_type) && JREFERENCE_TYPE_P (op2_type) | |
5e942c50 APB |
9228 | && (valid_ref_assignconv_cast_p (op1_type, op2_type, 1) |
9229 | || valid_ref_assignconv_cast_p (op2_type, | |
9230 | op1_type, 1)))) | |
e04a16fb AG |
9231 | ; /* Nothing to do here */ |
9232 | ||
9233 | /* Else we have an error figure what can't be converted into | |
9234 | what and report the error */ | |
9235 | else | |
9236 | { | |
9237 | char *t1; | |
0a2138e2 | 9238 | t1 = strdup (lang_printable_name (op1_type, 0)); |
e04a16fb AG |
9239 | parse_error_context |
9240 | (wfl_operator, "Incompatible type for `%s'. Can't convert `%s' " | |
9241 | "to `%s'", operator_string (node), t1, | |
0a2138e2 | 9242 | lang_printable_name (op2_type, 0)); |
e04a16fb AG |
9243 | free (t1); |
9244 | TREE_TYPE (node) = boolean_type_node; | |
9245 | error_found = 1; | |
9246 | break; | |
9247 | } | |
9248 | prom_type = boolean_type_node; | |
9249 | break; | |
9250 | } | |
9251 | ||
e04a16fb AG |
9252 | if (error_found) |
9253 | return error_mark_node; | |
9254 | ||
9255 | TREE_OPERAND (node, 0) = op1; | |
9256 | TREE_OPERAND (node, 1) = op2; | |
9257 | TREE_TYPE (node) = prom_type; | |
dc0b3eff PB |
9258 | TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2); |
9259 | ||
e04a16fb AG |
9260 | return fold (node); |
9261 | } | |
9262 | ||
b67d701b PB |
9263 | /* Concatenate the STRING_CST CSTE and STRING. When AFTER is a non |
9264 | zero value, the value of CSTE comes after the valude of STRING */ | |
9265 | ||
9266 | static tree | |
9267 | do_merge_string_cste (cste, string, string_len, after) | |
9268 | tree cste; | |
9269 | char *string; | |
9270 | int string_len, after; | |
9271 | { | |
9272 | int len = TREE_STRING_LENGTH (cste) + string_len; | |
9273 | char *old = TREE_STRING_POINTER (cste); | |
9274 | TREE_STRING_LENGTH (cste) = len; | |
9275 | TREE_STRING_POINTER (cste) = obstack_alloc (expression_obstack, len+1); | |
9276 | if (after) | |
9277 | { | |
9278 | strcpy (TREE_STRING_POINTER (cste), string); | |
9279 | strcat (TREE_STRING_POINTER (cste), old); | |
9280 | } | |
9281 | else | |
9282 | { | |
9283 | strcpy (TREE_STRING_POINTER (cste), old); | |
9284 | strcat (TREE_STRING_POINTER (cste), string); | |
9285 | } | |
9286 | return cste; | |
9287 | } | |
9288 | ||
9289 | /* Tries to merge OP1 (a STRING_CST) and OP2 (if suitable). Return a | |
9290 | new STRING_CST on success, NULL_TREE on failure */ | |
9291 | ||
9292 | static tree | |
9293 | merge_string_cste (op1, op2, after) | |
9294 | tree op1, op2; | |
9295 | int after; | |
9296 | { | |
9297 | /* Handle two string constants right away */ | |
9298 | if (TREE_CODE (op2) == STRING_CST) | |
9299 | return do_merge_string_cste (op1, TREE_STRING_POINTER (op2), | |
9300 | TREE_STRING_LENGTH (op2), after); | |
9301 | ||
9302 | /* Reasonable integer constant can be treated right away */ | |
9303 | if (TREE_CODE (op2) == INTEGER_CST && !TREE_CONSTANT_OVERFLOW (op2)) | |
9304 | { | |
9305 | static char *boolean_true = "true"; | |
9306 | static char *boolean_false = "false"; | |
9307 | static char *null_pointer = "null"; | |
9308 | char ch[3]; | |
9309 | char *string; | |
9310 | ||
9311 | if (op2 == boolean_true_node) | |
9312 | string = boolean_true; | |
9313 | else if (op2 == boolean_false_node) | |
9314 | string = boolean_false; | |
9315 | else if (op2 == null_pointer_node) | |
9316 | string = null_pointer; | |
9317 | else if (TREE_TYPE (op2) == char_type_node) | |
9318 | { | |
9319 | ch[0] = (char )TREE_INT_CST_LOW (op2); | |
9320 | ch[1] = '\0'; | |
9321 | string = ch; | |
9322 | } | |
9323 | else | |
9324 | string = print_int_node (op2); | |
9325 | ||
9326 | return do_merge_string_cste (op1, string, strlen (string), after); | |
9327 | } | |
9328 | return NULL_TREE; | |
9329 | } | |
9330 | ||
9331 | /* Tries to statically concatenate OP1 and OP2 if possible. Either one | |
9332 | has to be a STRING_CST and the other part must be a STRING_CST or a | |
9333 | INTEGRAL constant. Return a new STRING_CST if the operation | |
9334 | succeed, NULL_TREE otherwise. | |
9335 | ||
9336 | If the case we want to optimize for space, we might want to return | |
9337 | NULL_TREE for each invocation of this routine. FIXME */ | |
9338 | ||
9339 | static tree | |
9340 | string_constant_concatenation (op1, op2) | |
9341 | tree op1, op2; | |
9342 | { | |
9343 | if (TREE_CODE (op1) == STRING_CST || (TREE_CODE (op2) == STRING_CST)) | |
9344 | { | |
0a2138e2 | 9345 | tree string, rest; |
b67d701b PB |
9346 | int invert; |
9347 | ||
9348 | string = (TREE_CODE (op1) == STRING_CST ? op1 : op2); | |
9349 | rest = (string == op1 ? op2 : op1); | |
9350 | invert = (string == op1 ? 0 : 1 ); | |
9351 | ||
9352 | /* Walk REST, only if it looks reasonable */ | |
9353 | if (TREE_CODE (rest) != STRING_CST | |
9354 | && !IS_CRAFTED_STRING_BUFFER_P (rest) | |
9355 | && !JSTRING_TYPE_P (TREE_TYPE (rest)) | |
9356 | && TREE_CODE (rest) == EXPR_WITH_FILE_LOCATION) | |
9357 | { | |
9358 | rest = java_complete_tree (rest); | |
9359 | if (rest == error_mark_node) | |
9360 | return error_mark_node; | |
9361 | rest = fold (rest); | |
9362 | } | |
9363 | return merge_string_cste (string, rest, invert); | |
9364 | } | |
9365 | return NULL_TREE; | |
9366 | } | |
9367 | ||
9368 | /* Implement the `+' operator. Does static optimization if possible, | |
9369 | otherwise create (if necessary) and append elements to a | |
9370 | StringBuffer. The StringBuffer will be carried around until it is | |
9371 | used for a function call or an assignment. Then toString() will be | |
9372 | called on it to turn it into a String object. */ | |
9373 | ||
9374 | static tree | |
9375 | build_string_concatenation (op1, op2) | |
9376 | tree op1, op2; | |
9377 | { | |
9378 | tree result; | |
dc0b3eff PB |
9379 | int side_effects = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2); |
9380 | ||
b67d701b PB |
9381 | |
9382 | /* Try to do some static optimization */ | |
9383 | if ((result = string_constant_concatenation (op1, op2))) | |
9384 | return result; | |
9385 | ||
acd663ee APB |
9386 | /* Discard null constants on either sides of the expression */ |
9387 | if (TREE_CODE (op1) == STRING_CST && !TREE_STRING_LENGTH (op1)) | |
9388 | { | |
9389 | op1 = op2; | |
9390 | op2 = NULL_TREE; | |
9391 | } | |
9392 | else if (TREE_CODE (op2) == STRING_CST && !TREE_STRING_LENGTH (op2)) | |
9393 | op2 = NULL_TREE; | |
b67d701b | 9394 | |
acd663ee | 9395 | /* If operands are string constant, turn then into object references */ |
b67d701b PB |
9396 | if (TREE_CODE (op1) == STRING_CST) |
9397 | op1 = patch_string_cst (op1); | |
acd663ee | 9398 | if (op2 && TREE_CODE (op2) == STRING_CST) |
b67d701b PB |
9399 | op2 = patch_string_cst (op2); |
9400 | ||
acd663ee APB |
9401 | /* If either one of the constant is null and the other non null |
9402 | operand is a String object, return it. */ | |
9403 | if (JSTRING_TYPE_P (TREE_TYPE (op1)) && !op2) | |
9404 | return op1; | |
9405 | ||
b67d701b PB |
9406 | /* If OP1 isn't already a StringBuffer, create and |
9407 | initialize a new one */ | |
9408 | if (!IS_CRAFTED_STRING_BUFFER_P (op1)) | |
9409 | { | |
9410 | /* Two solutions here: | |
9411 | 1) OP1 is a string reference, we call new StringBuffer(OP1) | |
acd663ee | 9412 | 2) OP1 is something else, we call new StringBuffer().append(OP1). */ |
b67d701b PB |
9413 | if (JSTRING_TYPE_P (TREE_TYPE (op1))) |
9414 | op1 = BUILD_STRING_BUFFER (op1); | |
9415 | else | |
9416 | { | |
9417 | tree aNew = BUILD_STRING_BUFFER (NULL_TREE); | |
9418 | op1 = make_qualified_primary (aNew, BUILD_APPEND (op1), 0); | |
9419 | } | |
9420 | } | |
9421 | ||
acd663ee APB |
9422 | if (op2) |
9423 | { | |
9424 | /* OP1 is no longer the last node holding a crafted StringBuffer */ | |
9425 | IS_CRAFTED_STRING_BUFFER_P (op1) = 0; | |
9426 | /* Create a node for `{new...,xxx}.append (op2)' */ | |
9427 | if (op2) | |
9428 | op1 = make_qualified_primary (op1, BUILD_APPEND (op2), 0); | |
9429 | } | |
9430 | ||
b67d701b PB |
9431 | /* Mark the last node holding a crafted StringBuffer */ |
9432 | IS_CRAFTED_STRING_BUFFER_P (op1) = 1; | |
dc0b3eff PB |
9433 | |
9434 | TREE_SIDE_EFFECTS (op1) = side_effects; | |
b67d701b PB |
9435 | return op1; |
9436 | } | |
9437 | ||
9438 | /* Patch the string node NODE. NODE can be a STRING_CST of a crafted | |
9439 | StringBuffer. If no string were found to be patched, return | |
9440 | NULL. */ | |
9441 | ||
9442 | static tree | |
9443 | patch_string (node) | |
9444 | tree node; | |
9445 | { | |
1179ebc2 APB |
9446 | if (node == error_mark_node) |
9447 | return error_mark_node; | |
b67d701b PB |
9448 | if (TREE_CODE (node) == STRING_CST) |
9449 | return patch_string_cst (node); | |
9450 | else if (IS_CRAFTED_STRING_BUFFER_P (node)) | |
9451 | { | |
c877974e | 9452 | int saved = ctxp->explicit_constructor_p; |
b67d701b | 9453 | tree invoke = build_method_invocation (wfl_to_string, NULL_TREE); |
c877974e APB |
9454 | tree ret; |
9455 | /* Temporary disable forbid the use of `this'. */ | |
9456 | ctxp->explicit_constructor_p = 0; | |
9457 | ret = java_complete_tree (make_qualified_primary (node, invoke, 0)); | |
9458 | /* Restore it at its previous value */ | |
9459 | ctxp->explicit_constructor_p = saved; | |
9460 | return ret; | |
b67d701b PB |
9461 | } |
9462 | return NULL_TREE; | |
9463 | } | |
9464 | ||
9465 | /* Build the internal representation of a string constant. */ | |
9466 | ||
9467 | static tree | |
9468 | patch_string_cst (node) | |
9469 | tree node; | |
9470 | { | |
9471 | int location; | |
15fdcfe9 PB |
9472 | if (! flag_emit_class_files) |
9473 | { | |
9474 | push_obstacks (&permanent_obstack, &permanent_obstack); | |
9475 | node = get_identifier (TREE_STRING_POINTER (node)); | |
9476 | location = alloc_name_constant (CONSTANT_String, node); | |
9477 | node = build_ref_from_constant_pool (location); | |
9478 | } | |
b67d701b PB |
9479 | TREE_TYPE (node) = promote_type (string_type_node); |
9480 | TREE_CONSTANT (node) = 1; | |
9481 | return node; | |
9482 | } | |
9483 | ||
9484 | /* Build an incomplete unary operator expression. */ | |
e04a16fb AG |
9485 | |
9486 | static tree | |
9487 | build_unaryop (op_token, op_location, op1) | |
9488 | int op_token, op_location; | |
9489 | tree op1; | |
9490 | { | |
9491 | enum tree_code op; | |
9492 | tree unaryop; | |
9493 | switch (op_token) | |
9494 | { | |
b67d701b | 9495 | case PLUS_TK: op = UNARY_PLUS_EXPR; break; |
e04a16fb AG |
9496 | case MINUS_TK: op = NEGATE_EXPR; break; |
9497 | case NEG_TK: op = TRUTH_NOT_EXPR; break; | |
9498 | case NOT_TK: op = BIT_NOT_EXPR; break; | |
9499 | default: fatal ("Unknown token `%d' for unary operator - build_unaryop", | |
9500 | op_token); | |
9501 | } | |
9502 | ||
9503 | unaryop = build1 (op, NULL_TREE, op1); | |
e04a16fb AG |
9504 | TREE_SIDE_EFFECTS (unaryop) = 1; |
9505 | /* Store the location of the operator, for better error report. The | |
9506 | string of the operator will be rebuild based on the OP value. */ | |
9507 | EXPR_WFL_LINECOL (unaryop) = op_location; | |
9508 | return unaryop; | |
9509 | } | |
9510 | ||
9511 | /* Special case for the ++/-- operators, since they require an extra | |
9512 | argument to build, which is set to NULL and patched | |
9513 | later. IS_POST_P is 1 if the operator, 0 otherwise. */ | |
9514 | ||
9515 | static tree | |
9516 | build_incdec (op_token, op_location, op1, is_post_p) | |
9517 | int op_token, op_location; | |
9518 | tree op1; | |
9519 | int is_post_p; | |
9520 | { | |
9521 | static enum tree_code lookup [2][2] = | |
9522 | { | |
9523 | { PREDECREMENT_EXPR, PREINCREMENT_EXPR, }, | |
9524 | { POSTDECREMENT_EXPR, POSTINCREMENT_EXPR, }, | |
9525 | }; | |
9526 | tree node = build (lookup [is_post_p][(op_token - DECR_TK)], | |
9527 | NULL_TREE, op1, NULL_TREE); | |
9528 | TREE_SIDE_EFFECTS (node) = 1; | |
9529 | /* Store the location of the operator, for better error report. The | |
9530 | string of the operator will be rebuild based on the OP value. */ | |
9531 | EXPR_WFL_LINECOL (node) = op_location; | |
9532 | return node; | |
9533 | } | |
9534 | ||
9535 | /* Build an incomplete cast operator, based on the use of the | |
9536 | CONVERT_EXPR. Note that TREE_TYPE of the constructed node is | |
9537 | set. java_complete_tree is trained to walk a CONVERT_EXPR even | |
9538 | though its type is already set. */ | |
9539 | ||
9540 | static tree | |
9541 | build_cast (location, type, exp) | |
9542 | int location; | |
9543 | tree type, exp; | |
9544 | { | |
9545 | tree node = build1 (CONVERT_EXPR, type, exp); | |
9546 | EXPR_WFL_LINECOL (node) = location; | |
9547 | return node; | |
9548 | } | |
9549 | ||
9550 | /* 15.14 Unary operators. We return error_mark_node in case of error, | |
9551 | but preserve the type of NODE if the type is fixed. */ | |
9552 | ||
9553 | static tree | |
9554 | patch_unaryop (node, wfl_op) | |
9555 | tree node; | |
9556 | tree wfl_op; | |
9557 | { | |
9558 | tree op = TREE_OPERAND (node, 0); | |
9559 | tree op_type = TREE_TYPE (op); | |
e28cd97b | 9560 | tree prom_type, value, decl; |
e04a16fb AG |
9561 | int code = TREE_CODE (node); |
9562 | int error_found = 0; | |
9563 | ||
9564 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
9565 | ||
9566 | switch (code) | |
9567 | { | |
9568 | /* 15.13.2 Postfix Increment Operator ++ */ | |
9569 | case POSTINCREMENT_EXPR: | |
9570 | /* 15.13.3 Postfix Increment Operator -- */ | |
9571 | case POSTDECREMENT_EXPR: | |
9572 | /* 15.14.1 Prefix Increment Operator ++ */ | |
9573 | case PREINCREMENT_EXPR: | |
9574 | /* 15.14.2 Prefix Decrement Operator -- */ | |
9575 | case PREDECREMENT_EXPR: | |
e28cd97b APB |
9576 | decl = strip_out_static_field_access_decl (op); |
9577 | if (!JDECL_P (decl) | |
9578 | && !((TREE_CODE (decl) == INDIRECT_REF | |
9579 | || TREE_CODE (decl) == COMPONENT_REF) | |
9580 | && JPRIMITIVE_TYPE_P (TREE_TYPE (decl)))) | |
e04a16fb | 9581 | { |
5e942c50 APB |
9582 | tree lvalue; |
9583 | /* Before screaming, check that we're not in fact trying to | |
9584 | increment a optimized static final access, in which case | |
9585 | we issue an different error message. */ | |
9586 | if (!(TREE_CODE (wfl_op) == EXPR_WITH_FILE_LOCATION | |
9587 | && resolve_expression_name (wfl_op, &lvalue) | |
9588 | && check_final_assignment (lvalue, wfl_op))) | |
9589 | parse_error_context (wfl_operator, "Invalid argument to `%s'", | |
9590 | operator_string (node)); | |
e04a16fb AG |
9591 | TREE_TYPE (node) = error_mark_node; |
9592 | error_found = 1; | |
9593 | } | |
5e942c50 APB |
9594 | else if (check_final_assignment (op, wfl_op)) |
9595 | error_found = 1; | |
9596 | ||
e04a16fb AG |
9597 | /* From now on, we know that op if a variable and that it has a |
9598 | valid wfl. We use wfl_op to locate errors related to the | |
9599 | ++/-- operand. */ | |
9600 | else if (!JNUMERIC_TYPE_P (op_type)) | |
9601 | { | |
9602 | parse_error_context | |
9603 | (wfl_op, "Invalid argument type `%s' to `%s'", | |
0a2138e2 | 9604 | lang_printable_name (op_type, 0), operator_string (node)); |
e04a16fb AG |
9605 | TREE_TYPE (node) = error_mark_node; |
9606 | error_found = 1; | |
9607 | } | |
9608 | else | |
9609 | { | |
4a5f66c3 | 9610 | /* Before the addition, binary numeric promotion is performed on |
e04a16fb | 9611 | both operands */ |
4a5f66c3 APB |
9612 | value = build_int_2 (1, 0); |
9613 | TREE_TYPE (node) = | |
9614 | binary_numeric_promotion (op_type, TREE_TYPE (value), &op, &value); | |
9615 | /* And write the promoted incremented and increment */ | |
9616 | TREE_OPERAND (node, 0) = op; | |
e04a16fb | 9617 | TREE_OPERAND (node, 1) = value; |
4a5f66c3 APB |
9618 | /* Convert the overall back into its original type. */ |
9619 | return fold (convert (op_type, node)); | |
e04a16fb AG |
9620 | } |
9621 | break; | |
9622 | ||
9623 | /* 15.14.3 Unary Plus Operator + */ | |
b67d701b | 9624 | case UNARY_PLUS_EXPR: |
e04a16fb AG |
9625 | /* 15.14.4 Unary Minus Operator - */ |
9626 | case NEGATE_EXPR: | |
9627 | if (!JNUMERIC_TYPE_P (op_type)) | |
9628 | { | |
9629 | ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op_type); | |
9630 | TREE_TYPE (node) = error_mark_node; | |
9631 | error_found = 1; | |
9632 | } | |
9633 | /* Unary numeric promotion is performed on operand */ | |
9634 | else | |
9635 | { | |
15fdcfe9 PB |
9636 | op = do_unary_numeric_promotion (op); |
9637 | prom_type = TREE_TYPE (op); | |
b67d701b | 9638 | if (code == UNARY_PLUS_EXPR) |
4a5f66c3 | 9639 | return fold (op); |
e04a16fb AG |
9640 | } |
9641 | break; | |
9642 | ||
9643 | /* 15.14.5 Bitwise Complement Operator ~ */ | |
9644 | case BIT_NOT_EXPR: | |
9645 | if (!JINTEGRAL_TYPE_P (op_type)) | |
9646 | { | |
9647 | ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op_type); | |
9648 | TREE_TYPE (node) = error_mark_node; | |
9649 | error_found = 1; | |
9650 | } | |
9651 | else | |
9652 | { | |
15fdcfe9 PB |
9653 | op = do_unary_numeric_promotion (op); |
9654 | prom_type = TREE_TYPE (op); | |
e04a16fb AG |
9655 | } |
9656 | break; | |
9657 | ||
9658 | /* 15.14.6 Logical Complement Operator ! */ | |
9659 | case TRUTH_NOT_EXPR: | |
9660 | if (TREE_CODE (op_type) != BOOLEAN_TYPE) | |
9661 | { | |
9662 | ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op_type); | |
c877974e APB |
9663 | /* But the type is known. We will report an error if further |
9664 | attempt of a assignment is made with this rhs */ | |
e04a16fb AG |
9665 | TREE_TYPE (node) = boolean_type_node; |
9666 | error_found = 1; | |
9667 | } | |
9668 | else | |
9669 | prom_type = boolean_type_node; | |
9670 | break; | |
9671 | ||
9672 | /* 15.15 Cast Expression */ | |
9673 | case CONVERT_EXPR: | |
0a2138e2 | 9674 | value = patch_cast (node, wfl_operator); |
e04a16fb | 9675 | if (value == error_mark_node) |
c877974e APB |
9676 | { |
9677 | /* If this cast is part of an assignment, we tell the code | |
9678 | that deals with it not to complain about a mismatch, | |
9679 | because things have been cast, anyways */ | |
9680 | TREE_TYPE (node) = error_mark_node; | |
9681 | error_found = 1; | |
9682 | } | |
9683 | else | |
dc0b3eff PB |
9684 | { |
9685 | value = fold (value); | |
9686 | TREE_SIDE_EFFECTS (value) = TREE_SIDE_EFFECTS (op); | |
9687 | return value; | |
9688 | } | |
e04a16fb AG |
9689 | break; |
9690 | } | |
9691 | ||
e04a16fb AG |
9692 | if (error_found) |
9693 | return error_mark_node; | |
4a5f66c3 APB |
9694 | |
9695 | /* There are cases where node has been replaced by something else | |
9696 | and we don't end up returning here: UNARY_PLUS_EXPR, | |
9697 | CONVERT_EXPR, {POST,PRE}{INCR,DECR}EMENT_EXPR. */ | |
7525cc04 | 9698 | TREE_OPERAND (node, 0) = fold (op); |
4a5f66c3 | 9699 | TREE_TYPE (node) = prom_type; |
dc0b3eff | 9700 | TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op); |
e04a16fb AG |
9701 | return fold (node); |
9702 | } | |
9703 | ||
9704 | /* Generic type resolution that sometimes takes place during node | |
9705 | patching. Returned the resolved type or generate an error | |
9706 | message. Return the resolved type or NULL_TREE. */ | |
9707 | ||
9708 | static tree | |
9709 | resolve_type_during_patch (type) | |
9710 | tree type; | |
9711 | { | |
9712 | if (unresolved_type_p (type, NULL)) | |
9713 | { | |
9714 | tree type_decl = resolve_no_layout (EXPR_WFL_NODE (type), NULL_TREE); | |
9715 | if (!type_decl) | |
9716 | { | |
9717 | parse_error_context (type, | |
9718 | "Class `%s' not found in type declaration", | |
9719 | IDENTIFIER_POINTER (EXPR_WFL_NODE (type))); | |
9720 | return NULL_TREE; | |
9721 | } | |
9722 | else | |
5e942c50 APB |
9723 | { |
9724 | CLASS_LOADED_P (TREE_TYPE (type_decl)) = 1; | |
9725 | return TREE_TYPE (type_decl); | |
9726 | } | |
e04a16fb AG |
9727 | } |
9728 | return type; | |
9729 | } | |
9730 | /* 5.5 Casting Conversion. error_mark_node is returned if an error is | |
9731 | found. Otherwise NODE or something meant to replace it is returned. */ | |
9732 | ||
9733 | static tree | |
0a2138e2 | 9734 | patch_cast (node, wfl_operator) |
e04a16fb | 9735 | tree node; |
e04a16fb AG |
9736 | tree wfl_operator; |
9737 | { | |
9738 | tree op = TREE_OPERAND (node, 0); | |
9739 | tree op_type = TREE_TYPE (op); | |
9740 | tree cast_type = TREE_TYPE (node); | |
9741 | char *t1; | |
9742 | ||
9743 | /* First resolve OP_TYPE if unresolved */ | |
9744 | if (!(cast_type = resolve_type_during_patch (cast_type))) | |
9745 | return error_mark_node; | |
9746 | ||
9747 | /* Check on cast that are proven correct at compile time */ | |
9748 | if (JNUMERIC_TYPE_P (cast_type) && JNUMERIC_TYPE_P (op_type)) | |
9749 | { | |
9750 | static tree convert_narrow (); | |
9751 | /* Same type */ | |
9752 | if (cast_type == op_type) | |
9753 | return node; | |
9754 | ||
0b4d333e APB |
9755 | /* float and double type are converted to the original type main |
9756 | variant and then to the target type. */ | |
9757 | if (JFLOAT_TYPE_P (op_type) && TREE_CODE (cast_type) == CHAR_TYPE) | |
9758 | op = convert (integer_type_node, op); | |
9759 | ||
e04a16fb AG |
9760 | /* Try widening/narowwing convertion. Potentially, things need |
9761 | to be worked out in gcc so we implement the extreme cases | |
9762 | correctly. fold_convert() needs to be fixed. */ | |
9763 | return convert (cast_type, op); | |
9764 | } | |
9765 | ||
0b4d333e APB |
9766 | /* It's also valid to cast a boolean into a boolean */ |
9767 | if (op_type == boolean_type_node && cast_type == boolean_type_node) | |
9768 | return node; | |
9769 | ||
5e942c50 APB |
9770 | /* null can be casted to references */ |
9771 | if (op == null_pointer_node && JREFERENCE_TYPE_P (cast_type)) | |
9772 | return build_null_of_type (cast_type); | |
9773 | ||
e04a16fb AG |
9774 | /* The remaining legal casts involve conversion between reference |
9775 | types. Check for their compile time correctness. */ | |
9776 | if (JREFERENCE_TYPE_P (op_type) && JREFERENCE_TYPE_P (cast_type) | |
09ed0f70 | 9777 | && valid_ref_assignconv_cast_p (op_type, cast_type, 1)) |
e04a16fb AG |
9778 | { |
9779 | TREE_TYPE (node) = promote_type (cast_type); | |
9780 | /* Now, the case can be determined correct at compile time if | |
9781 | OP_TYPE can be converted into CAST_TYPE by assignment | |
9782 | conversion (5.2) */ | |
9783 | ||
9784 | if (valid_ref_assignconv_cast_p (op_type, cast_type, 0)) | |
15fdcfe9 PB |
9785 | { |
9786 | TREE_SET_CODE (node, NOP_EXPR); | |
9787 | return node; | |
9788 | } | |
9789 | ||
9790 | if (flag_emit_class_files) | |
9791 | { | |
9792 | TREE_SET_CODE (node, CONVERT_EXPR); | |
9793 | return node; | |
9794 | } | |
e04a16fb AG |
9795 | |
9796 | /* The cast requires a run-time check */ | |
9797 | return build (CALL_EXPR, promote_type (cast_type), | |
9798 | build_address_of (soft_checkcast_node), | |
9799 | tree_cons (NULL_TREE, build_class_ref (cast_type), | |
9800 | build_tree_list (NULL_TREE, op)), | |
9801 | NULL_TREE); | |
9802 | } | |
9803 | ||
9804 | /* Any other casts are proven incorrect at compile time */ | |
0a2138e2 | 9805 | t1 = strdup (lang_printable_name (op_type, 0)); |
e04a16fb | 9806 | parse_error_context (wfl_operator, "Invalid cast from `%s' to `%s'", |
0a2138e2 | 9807 | t1, lang_printable_name (cast_type, 0)); |
e04a16fb AG |
9808 | free (t1); |
9809 | return error_mark_node; | |
9810 | } | |
9811 | ||
5e942c50 APB |
9812 | /* Build a null constant and give it the type TYPE. */ |
9813 | ||
9814 | static tree | |
9815 | build_null_of_type (type) | |
9816 | tree type; | |
9817 | { | |
9818 | tree node = build_int_2 (0, 0); | |
9819 | TREE_TYPE (node) = promote_type (type); | |
9820 | return node; | |
9821 | } | |
9822 | ||
e04a16fb AG |
9823 | /* Build an ARRAY_REF incomplete tree node. Note that operand 1 isn't |
9824 | a list of indices. */ | |
9825 | static tree | |
9826 | build_array_ref (location, array, index) | |
9827 | int location; | |
9828 | tree array, index; | |
9829 | { | |
9830 | tree node = build (ARRAY_REF, NULL_TREE, array, index); | |
9831 | EXPR_WFL_LINECOL (node) = location; | |
9832 | return node; | |
9833 | } | |
9834 | ||
9835 | /* 15.12 Array Access Expression */ | |
9836 | ||
9837 | static tree | |
c877974e APB |
9838 | patch_array_ref (node) |
9839 | tree node; | |
e04a16fb AG |
9840 | { |
9841 | tree array = TREE_OPERAND (node, 0); | |
9842 | tree array_type = TREE_TYPE (array); | |
9843 | tree index = TREE_OPERAND (node, 1); | |
9844 | tree index_type = TREE_TYPE (index); | |
e04a16fb AG |
9845 | int error_found = 0; |
9846 | ||
9847 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
9848 | ||
e04a16fb AG |
9849 | if (TREE_CODE (array_type) == POINTER_TYPE) |
9850 | array_type = TREE_TYPE (array_type); | |
9851 | ||
9852 | /* The array reference must be an array */ | |
9853 | if (!TYPE_ARRAY_P (array_type)) | |
9854 | { | |
9855 | parse_error_context | |
9856 | (wfl_operator, "`[]' can only be applied to arrays. It can't be " | |
0a2138e2 | 9857 | "applied to `%s'", lang_printable_name (array_type, 0)); |
e04a16fb AG |
9858 | TREE_TYPE (node) = error_mark_node; |
9859 | error_found = 1; | |
9860 | } | |
9861 | ||
9862 | /* The array index underdoes unary numeric promotion. The promoted | |
9863 | type must be int */ | |
15fdcfe9 PB |
9864 | index = do_unary_numeric_promotion (index); |
9865 | if (TREE_TYPE (index) != int_type_node) | |
e04a16fb | 9866 | { |
b67d701b | 9867 | int could_cast = valid_cast_to_p (index_type, int_type_node); |
e04a16fb AG |
9868 | parse_error_context |
9869 | (wfl_operator, | |
9870 | (could_cast ? "Incompatible type for `[]'. Explicit cast needed to " | |
9871 | "convert `%s' to `int'" : "Incompatible type for `[]'. " | |
9872 | "Can't convert `%s' to `int'"), | |
0a2138e2 | 9873 | lang_printable_name (index_type, 0)); |
e04a16fb AG |
9874 | TREE_TYPE (node) = error_mark_node; |
9875 | error_found = 1; | |
9876 | } | |
9877 | ||
e04a16fb AG |
9878 | if (error_found) |
9879 | return error_mark_node; | |
e04a16fb | 9880 | |
5e942c50 | 9881 | array_type = TYPE_ARRAY_ELEMENT (array_type); |
5e942c50 | 9882 | |
e04a16fb AG |
9883 | if (flag_emit_class_files) |
9884 | { | |
15fdcfe9 PB |
9885 | TREE_OPERAND (node, 0) = array; |
9886 | TREE_OPERAND (node, 1) = index; | |
e04a16fb AG |
9887 | } |
9888 | else | |
9889 | node = build_java_arrayaccess (array, array_type, index); | |
9890 | TREE_TYPE (node) = array_type; | |
9891 | return node; | |
9892 | } | |
9893 | ||
9894 | /* 15.9 Array Creation Expressions */ | |
9895 | ||
9896 | static tree | |
9897 | build_newarray_node (type, dims, extra_dims) | |
9898 | tree type; | |
9899 | tree dims; | |
9900 | int extra_dims; | |
9901 | { | |
9902 | tree node = | |
b67d701b | 9903 | build (NEW_ARRAY_EXPR, NULL_TREE, type, nreverse (dims), |
e04a16fb | 9904 | build_int_2 (extra_dims, 0)); |
e04a16fb AG |
9905 | return node; |
9906 | } | |
9907 | ||
9908 | static tree | |
9909 | patch_newarray (node) | |
9910 | tree node; | |
9911 | { | |
9912 | tree type = TREE_OPERAND (node, 0); | |
9913 | tree dims = TREE_OPERAND (node, 1); | |
9914 | tree cdim, array_type; | |
9915 | int error_found = 0; | |
9916 | int ndims = 0; | |
9917 | int xdims = TREE_INT_CST_LOW (TREE_OPERAND (node, 2)); | |
e04a16fb AG |
9918 | |
9919 | /* Dimension types are verified. It's better for the types to be | |
9920 | verified in order. */ | |
9921 | for (cdim = dims, ndims = 0; cdim; cdim = TREE_CHAIN (cdim), ndims++ ) | |
9922 | { | |
9923 | int dim_error = 0; | |
9924 | tree dim = TREE_VALUE (cdim); | |
9925 | ||
9926 | /* Dim might have been saved during its evaluation */ | |
9927 | dim = (TREE_CODE (dim) == SAVE_EXPR ? dim = TREE_OPERAND (dim, 0) : dim); | |
9928 | ||
9929 | /* The type of each specified dimension must be an integral type. */ | |
9930 | if (!JINTEGRAL_TYPE_P (TREE_TYPE (dim))) | |
9931 | dim_error = 1; | |
9932 | ||
9933 | /* Each expression undergoes an unary numeric promotion (5.6.1) and the | |
9934 | promoted type must be int. */ | |
9935 | else | |
9936 | { | |
15fdcfe9 | 9937 | dim = do_unary_numeric_promotion (dim); |
e04a16fb AG |
9938 | if (TREE_TYPE (dim) != int_type_node) |
9939 | dim_error = 1; | |
9940 | } | |
9941 | ||
9942 | /* Report errors on types here */ | |
9943 | if (dim_error) | |
9944 | { | |
9945 | parse_error_context | |
9946 | (TREE_PURPOSE (cdim), | |
9947 | "Incompatible type for dimension in array creation expression. " | |
9948 | "%s convert `%s' to `int'", | |
b67d701b | 9949 | (valid_cast_to_p (TREE_TYPE (dim), int_type_node) ? |
e04a16fb | 9950 | "Explicit cast needed to" : "Can't"), |
0a2138e2 | 9951 | lang_printable_name (TREE_TYPE (dim), 0)); |
e04a16fb AG |
9952 | error_found = 1; |
9953 | } | |
9954 | ||
e04a16fb AG |
9955 | TREE_PURPOSE (cdim) = NULL_TREE; |
9956 | } | |
9957 | ||
9958 | /* Resolve array base type if unresolved */ | |
9959 | if (!(type = resolve_type_during_patch (type))) | |
9960 | error_found = 1; | |
9961 | ||
9962 | if (error_found) | |
9963 | { | |
9964 | /* We don't want further evaluation of this bogus array creation | |
9965 | operation */ | |
9966 | TREE_TYPE (node) = error_mark_node; | |
9967 | return error_mark_node; | |
9968 | } | |
9969 | ||
15fdcfe9 PB |
9970 | /* Set array_type to the actual (promoted) array type of the result. */ |
9971 | if (TREE_CODE (type) == RECORD_TYPE) | |
9972 | type = build_pointer_type (type); | |
9973 | while (--xdims >= 0) | |
9974 | { | |
9975 | type = promote_type (build_java_array_type (type, -1)); | |
9976 | } | |
9977 | dims = nreverse (dims); | |
9978 | array_type = type; | |
9979 | for (cdim = dims; cdim; cdim = TREE_CHAIN (cdim)) | |
9980 | { | |
9981 | type = array_type; | |
9982 | array_type = build_java_array_type (type, | |
9983 | TREE_CODE (cdim) == INTEGER_CST ? | |
9984 | TREE_INT_CST_LOW (cdim) : -1); | |
9985 | array_type = promote_type (array_type); | |
9986 | } | |
9987 | dims = nreverse (dims); | |
9988 | ||
e04a16fb AG |
9989 | /* The node is transformed into a function call. Things are done |
9990 | differently according to the number of dimensions. If the number | |
9991 | of dimension is equal to 1, then the nature of the base type | |
9992 | (primitive or not) matters. */ | |
15fdcfe9 | 9993 | if (ndims == 1) |
fdec99c6 | 9994 | return build_new_array (type, TREE_VALUE (dims)); |
e04a16fb | 9995 | |
e04a16fb AG |
9996 | /* Can't reuse what's already written in expr.c because it uses the |
9997 | JVM stack representation. Provide a build_multianewarray. FIXME */ | |
15fdcfe9 | 9998 | return build (CALL_EXPR, array_type, |
e04a16fb | 9999 | build_address_of (soft_multianewarray_node), |
15fdcfe9 | 10000 | tree_cons (NULL_TREE, build_class_ref (TREE_TYPE (array_type)), |
e04a16fb | 10001 | tree_cons (NULL_TREE, |
15fdcfe9 | 10002 | build_int_2 (ndims, 0), dims )), |
e04a16fb AG |
10003 | NULL_TREE); |
10004 | } | |
10005 | ||
f8976021 APB |
10006 | /* 10.6 Array initializer. */ |
10007 | ||
10008 | /* Build a wfl for array element that don't have one, so we can | |
10009 | pin-point errors. */ | |
10010 | ||
10011 | static tree | |
10012 | maybe_build_array_element_wfl (node) | |
10013 | tree node; | |
10014 | { | |
10015 | if (TREE_CODE (node) != EXPR_WITH_FILE_LOCATION) | |
10016 | return build_expr_wfl (NULL_TREE, ctxp->filename, | |
10017 | ctxp->elc.line, ctxp->elc.prev_col); | |
10018 | else | |
10019 | return NULL_TREE; | |
10020 | } | |
10021 | ||
10022 | /* Build a NEW_ARRAY_INIT that features a CONSTRUCTOR node. This makes | |
10023 | identification of initialized arrays easier to detect during walk | |
10024 | and expansion. */ | |
10025 | ||
10026 | static tree | |
10027 | build_new_array_init (location, values) | |
10028 | int location; | |
10029 | tree values; | |
10030 | { | |
10031 | tree constructor = build (CONSTRUCTOR, NULL_TREE, NULL_TREE, values); | |
10032 | tree to_return = build1 (NEW_ARRAY_INIT, NULL_TREE, constructor); | |
5bba4807 | 10033 | EXPR_WFL_LINECOL (to_return) = location; |
f8976021 APB |
10034 | return to_return; |
10035 | } | |
10036 | ||
10037 | /* Expand a NEW_ARRAY_INIT node. Return error_mark_node if an error | |
10038 | occurred. Otherwise return NODE after having set its type | |
10039 | appropriately. */ | |
10040 | ||
10041 | static tree | |
10042 | patch_new_array_init (type, node) | |
10043 | tree type, node; | |
f8976021 APB |
10044 | { |
10045 | int error_seen = 0; | |
fdec99c6 | 10046 | tree current, element_type; |
f8976021 | 10047 | HOST_WIDE_INT length; |
fdec99c6 PB |
10048 | int all_constant = 1; |
10049 | tree init = TREE_OPERAND (node, 0); | |
f8976021 | 10050 | |
fdec99c6 PB |
10051 | if (TREE_CODE (type) != POINTER_TYPE || ! TYPE_ARRAY_P (TREE_TYPE (type))) |
10052 | { | |
10053 | parse_error_context (node, | |
10054 | "Invalid array initializer for non-array type `%s'", | |
10055 | lang_printable_name (type, 1)); | |
10056 | return error_mark_node; | |
10057 | } | |
10058 | type = TREE_TYPE (type); | |
10059 | element_type = TYPE_ARRAY_ELEMENT (type); | |
f8976021 | 10060 | |
fdec99c6 PB |
10061 | CONSTRUCTOR_ELTS (init) = nreverse (CONSTRUCTOR_ELTS (init)); |
10062 | ||
10063 | for (length = 0, current = CONSTRUCTOR_ELTS (init); | |
10064 | current; length++, current = TREE_CHAIN (current)) | |
f8976021 | 10065 | { |
fdec99c6 PB |
10066 | tree elt = TREE_VALUE (current); |
10067 | if (elt == NULL_TREE || TREE_CODE (elt) != NEW_ARRAY_INIT) | |
f8976021 | 10068 | { |
fdec99c6 | 10069 | error_seen |= array_constructor_check_entry (element_type, current); |
5bba4807 PB |
10070 | elt = TREE_VALUE (current); |
10071 | /* When compiling to native code, STRING_CST is converted to | |
10072 | INDIRECT_REF, but still with a TREE_CONSTANT flag. */ | |
10073 | if (! TREE_CONSTANT (elt) || TREE_CODE (elt) == INDIRECT_REF) | |
fdec99c6 | 10074 | all_constant = 0; |
f8976021 | 10075 | } |
fdec99c6 PB |
10076 | else |
10077 | { | |
10078 | TREE_VALUE (current) = patch_new_array_init (element_type, elt); | |
10079 | TREE_PURPOSE (current) = NULL_TREE; | |
10080 | all_constant = 0; | |
10081 | } | |
10082 | if (elt && TREE_VALUE (elt) == error_mark_node) | |
10083 | error_seen = 1; | |
f8976021 APB |
10084 | } |
10085 | ||
10086 | if (error_seen) | |
10087 | return error_mark_node; | |
10088 | ||
10089 | /* Create a new type. We can't reuse the one we have here by | |
10090 | patching its dimension because it originally is of dimension -1 | |
10091 | hence reused by gcc. This would prevent triangular arrays. */ | |
fdec99c6 PB |
10092 | type = build_java_array_type (element_type, length); |
10093 | TREE_TYPE (init) = TREE_TYPE (TREE_CHAIN (TREE_CHAIN (TYPE_FIELDS (type)))); | |
10094 | TREE_TYPE (node) = promote_type (type); | |
10095 | TREE_CONSTANT (init) = all_constant; | |
bc3ca41b | 10096 | TREE_CONSTANT (node) = all_constant; |
f8976021 APB |
10097 | return node; |
10098 | } | |
10099 | ||
10100 | /* Verify that one entry of the initializer element list can be | |
10101 | assigned to the array base type. Report 1 if an error occurred, 0 | |
10102 | otherwise. */ | |
10103 | ||
10104 | static int | |
10105 | array_constructor_check_entry (type, entry) | |
10106 | tree type, entry; | |
10107 | { | |
10108 | char *array_type_string = NULL; /* For error reports */ | |
10109 | tree value, type_value, new_value, wfl_value, patched; | |
10110 | int error_seen = 0; | |
10111 | ||
10112 | new_value = NULL_TREE; | |
10113 | wfl_value = TREE_VALUE (entry); | |
10114 | ||
f8976021 | 10115 | value = java_complete_tree (TREE_VALUE (entry)); |
1179ebc2 | 10116 | /* patch_string return error_mark_node if arg is error_mark_node */ |
f8976021 APB |
10117 | if ((patched = patch_string (value))) |
10118 | value = patched; | |
1179ebc2 APB |
10119 | if (value == error_mark_node) |
10120 | return 1; | |
f8976021 | 10121 | |
f8976021 APB |
10122 | type_value = TREE_TYPE (value); |
10123 | ||
1179ebc2 | 10124 | /* At anytime, try_builtin_assignconv can report a warning on |
f8976021 APB |
10125 | constant overflow during narrowing. */ |
10126 | SET_WFL_OPERATOR (wfl_operator, TREE_PURPOSE (entry), wfl_value); | |
10127 | new_value = try_builtin_assignconv (wfl_operator, type, value); | |
10128 | if (!new_value && (new_value = try_reference_assignconv (type, value))) | |
10129 | type_value = promote_type (type); | |
10130 | ||
10131 | /* Check and report errors */ | |
10132 | if (!new_value) | |
10133 | { | |
10134 | char *msg = (!valid_cast_to_p (type_value, type) ? | |
10135 | "Can't" : "Explicit cast needed to"); | |
10136 | if (!array_type_string) | |
10137 | array_type_string = strdup (lang_printable_name (type, 1)); | |
10138 | parse_error_context | |
10139 | (wfl_operator, "Incompatible type for array. %s convert `%s' to `%s'", | |
10140 | msg, lang_printable_name (type_value, 1), array_type_string); | |
10141 | error_seen = 1; | |
10142 | } | |
10143 | ||
10144 | if (new_value) | |
10145 | { | |
10146 | new_value = maybe_build_primttype_type_ref (new_value, wfl_operator); | |
10147 | TREE_VALUE (entry) = new_value; | |
10148 | } | |
10149 | ||
10150 | if (array_type_string) | |
10151 | free (array_type_string); | |
10152 | ||
10153 | TREE_PURPOSE (entry) = NULL_TREE; | |
10154 | return error_seen; | |
10155 | } | |
10156 | ||
e04a16fb AG |
10157 | static tree |
10158 | build_this (location) | |
10159 | int location; | |
10160 | { | |
10161 | tree node = build_wfl_node (this_identifier_node, input_filename, 0, 0); | |
b67d701b | 10162 | TREE_SET_CODE (node, THIS_EXPR); |
e04a16fb AG |
10163 | EXPR_WFL_LINECOL (node) = location; |
10164 | return node; | |
10165 | } | |
10166 | ||
10167 | /* 14.15 The return statement. It builds a modify expression that | |
10168 | assigns the returned value to the RESULT_DECL that hold the value | |
10169 | to be returned. */ | |
10170 | ||
10171 | static tree | |
10172 | build_return (location, op) | |
10173 | int location; | |
10174 | tree op; | |
10175 | { | |
10176 | tree node = build1 (RETURN_EXPR, NULL_TREE, op); | |
10177 | EXPR_WFL_LINECOL (node) = location; | |
b67d701b | 10178 | node = build_debugable_stmt (location, node); |
e04a16fb AG |
10179 | return node; |
10180 | } | |
10181 | ||
10182 | static tree | |
10183 | patch_return (node) | |
10184 | tree node; | |
10185 | { | |
10186 | tree return_exp = TREE_OPERAND (node, 0); | |
10187 | tree meth = current_function_decl; | |
10188 | tree mtype = TREE_TYPE (TREE_TYPE (current_function_decl)); | |
e04a16fb AG |
10189 | int error_found = 0; |
10190 | ||
10191 | TREE_TYPE (node) = error_mark_node; | |
10192 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
10193 | ||
10194 | /* It's invalid to have a return value within a function that is | |
10195 | declared with the keyword void or that is a constructor */ | |
10196 | if (return_exp && (mtype == void_type_node || DECL_CONSTRUCTOR_P (meth))) | |
10197 | error_found = 1; | |
10198 | ||
10199 | /* It's invalid to have a no return value within a function that | |
10200 | isn't declared with the keyword `void' */ | |
10201 | if (!return_exp && (mtype != void_type_node && !DECL_CONSTRUCTOR_P (meth))) | |
10202 | error_found = 2; | |
10203 | ||
10204 | if (error_found) | |
10205 | { | |
22eed1e6 APB |
10206 | if (!DECL_CONSTRUCTOR_P (meth)) |
10207 | { | |
10208 | char *t = strdup (lang_printable_name (mtype, 0)); | |
10209 | parse_error_context (wfl_operator, | |
10210 | "`return' with%s value from `%s %s'", | |
10211 | (error_found == 1 ? "" : "out"), | |
10212 | t, lang_printable_name (meth, 0)); | |
10213 | free (t); | |
10214 | } | |
10215 | else | |
10216 | parse_error_context (wfl_operator, | |
10217 | "`return' with value from constructor `%s'", | |
10218 | lang_printable_name (meth, 0)); | |
e04a16fb AG |
10219 | return error_mark_node; |
10220 | } | |
10221 | ||
5e942c50 APB |
10222 | /* If we have a return_exp, build a modify expression and expand |
10223 | it. Note: at that point, the assignment is declared valid, but we | |
10224 | may want to carry some more hacks */ | |
e04a16fb AG |
10225 | if (return_exp) |
10226 | { | |
5e942c50 APB |
10227 | tree exp = java_complete_tree (return_exp); |
10228 | tree modify, patched; | |
10229 | ||
10230 | /* If the function returned value and EXP are booleans, EXP has | |
10231 | to be converted into the type of DECL_RESULT, which is integer | |
10232 | (see complete_start_java_method) */ | |
10233 | if (TREE_TYPE (exp) == boolean_type_node && | |
10234 | TREE_TYPE (TREE_TYPE (meth)) == boolean_type_node) | |
10235 | exp = convert_to_integer (TREE_TYPE (DECL_RESULT (meth)), exp); | |
10236 | ||
10237 | /* `null' can be assigned to a function returning a reference */ | |
10238 | if (JREFERENCE_TYPE_P (TREE_TYPE (TREE_TYPE (meth))) && | |
10239 | exp == null_pointer_node) | |
10240 | exp = build_null_of_type (TREE_TYPE (TREE_TYPE (meth))); | |
10241 | ||
10242 | if ((patched = patch_string (exp))) | |
10243 | exp = patched; | |
10244 | ||
10245 | modify = build (MODIFY_EXPR, NULL_TREE, DECL_RESULT (meth), exp); | |
e04a16fb AG |
10246 | EXPR_WFL_LINECOL (modify) = EXPR_WFL_LINECOL (node); |
10247 | modify = java_complete_tree (modify); | |
5e942c50 | 10248 | |
e04a16fb AG |
10249 | if (modify != error_mark_node) |
10250 | { | |
10251 | TREE_SIDE_EFFECTS (modify) = 1; | |
10252 | TREE_OPERAND (node, 0) = modify; | |
10253 | } | |
10254 | else | |
10255 | return error_mark_node; | |
10256 | } | |
10257 | TREE_TYPE (node) = void_type_node; | |
10258 | TREE_SIDE_EFFECTS (node) = 1; | |
10259 | return node; | |
10260 | } | |
10261 | ||
10262 | /* 14.8 The if Statement */ | |
10263 | ||
10264 | static tree | |
10265 | build_if_else_statement (location, expression, if_body, else_body) | |
10266 | int location; | |
10267 | tree expression, if_body, else_body; | |
10268 | { | |
10269 | tree node; | |
e04a16fb | 10270 | if (!else_body) |
9bbc7d9f | 10271 | else_body = empty_stmt_node; |
e04a16fb AG |
10272 | node = build (COND_EXPR, NULL_TREE, expression, if_body, else_body); |
10273 | EXPR_WFL_LINECOL (node) = location; | |
b67d701b | 10274 | node = build_debugable_stmt (location, node); |
e04a16fb AG |
10275 | return node; |
10276 | } | |
10277 | ||
10278 | static tree | |
10279 | patch_if_else_statement (node) | |
10280 | tree node; | |
10281 | { | |
10282 | tree expression = TREE_OPERAND (node, 0); | |
10283 | ||
10284 | TREE_TYPE (node) = error_mark_node; | |
10285 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
10286 | ||
10287 | /* The type of expression must be boolean */ | |
b67d701b PB |
10288 | if (TREE_TYPE (expression) != boolean_type_node |
10289 | && TREE_TYPE (expression) != promoted_boolean_type_node) | |
e04a16fb AG |
10290 | { |
10291 | parse_error_context | |
10292 | (wfl_operator, | |
10293 | "Incompatible type for `if'. Can't convert `%s' to `boolean'", | |
0a2138e2 | 10294 | lang_printable_name (TREE_TYPE (expression), 0)); |
e04a16fb AG |
10295 | return error_mark_node; |
10296 | } | |
10297 | ||
10298 | TREE_TYPE (node) = void_type_node; | |
10299 | TREE_SIDE_EFFECTS (node) = 1; | |
15fdcfe9 | 10300 | CAN_COMPLETE_NORMALLY (node) |
9bbc7d9f PB |
10301 | = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)) |
10302 | | CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 2)); | |
e04a16fb AG |
10303 | return node; |
10304 | } | |
10305 | ||
10306 | /* 14.6 Labeled Statements */ | |
10307 | ||
10308 | /* Action taken when a lableled statement is parsed. a new | |
10309 | LABELED_BLOCK_EXPR is created. No statement is attached to the | |
10310 | label, yet. */ | |
10311 | ||
10312 | static tree | |
0a2138e2 | 10313 | build_labeled_block (location, label) |
e04a16fb | 10314 | int location; |
0a2138e2 | 10315 | tree label; |
e04a16fb AG |
10316 | { |
10317 | tree label_name = merge_qualified_name (label_id, label); | |
10318 | tree label_decl, node; | |
10319 | ||
ac825856 | 10320 | /* Issue an error if we try to reuse a label that was previously |
e04a16fb AG |
10321 | declared */ |
10322 | if (IDENTIFIER_LOCAL_VALUE (label_name)) | |
10323 | { | |
10324 | EXPR_WFL_LINECOL (wfl_operator) = location; | |
ac825856 APB |
10325 | parse_error_context (wfl_operator, "Declaration of `%s' shadows " |
10326 | "a previous label declaration", | |
e04a16fb AG |
10327 | IDENTIFIER_POINTER (label)); |
10328 | EXPR_WFL_LINECOL (wfl_operator) = | |
10329 | EXPR_WFL_LINECOL (IDENTIFIER_LOCAL_VALUE (label_name)); | |
ac825856 APB |
10330 | parse_error_context (wfl_operator, "This is the location of the " |
10331 | "previous declaration of label `%s'", | |
10332 | IDENTIFIER_POINTER (label)); | |
10333 | java_error_count--; | |
e04a16fb AG |
10334 | } |
10335 | ||
10336 | label_decl = create_label_decl (label_name); | |
10337 | node = build (LABELED_BLOCK_EXPR, NULL_TREE, label_decl, NULL_TREE); | |
10338 | EXPR_WFL_LINECOL (node) = location; | |
10339 | TREE_SIDE_EFFECTS (node) = 1; | |
10340 | return node; | |
10341 | } | |
10342 | ||
10343 | /* Generate a label crafting a unique name for it. This is used to | |
10344 | implicitely label loops that aren't the body part of labeled | |
10345 | statement. */ | |
10346 | ||
10347 | static tree | |
10348 | generate_labeled_block () | |
10349 | { | |
0a2138e2 | 10350 | return build_labeled_block (0, generate_name ()); |
e04a16fb AG |
10351 | } |
10352 | ||
b67d701b | 10353 | /* A labeled statement LBE is attached a statement. */ |
e04a16fb AG |
10354 | |
10355 | static tree | |
10356 | complete_labeled_statement (lbe, statement) | |
10357 | tree lbe; /* Labeled block expr */ | |
10358 | tree statement; | |
10359 | { | |
10360 | /* In anyways, tie the loop to its statement */ | |
10361 | LABELED_BLOCK_BODY (lbe) = statement; | |
10362 | ||
10363 | /* Ok, if statement is a for loop, we have to attach the labeled | |
10364 | statement to the block the for loop belongs to and return the | |
10365 | block instead */ | |
10366 | if (TREE_CODE (statement) == LOOP_EXPR && IS_FOR_LOOP_P (statement)) | |
10367 | { | |
10368 | java_method_add_stmt (current_function_decl, lbe); | |
10369 | return exit_block (); | |
10370 | } | |
10371 | ||
10372 | return lbe; | |
10373 | } | |
10374 | ||
10375 | /* 14.10, 14.11, 14.12 Loop Statements */ | |
10376 | ||
10377 | /* Create an empty LOOP_EXPR and make it the last in the nested loop | |
10378 | list. */ | |
10379 | ||
10380 | static tree | |
10381 | build_new_loop (loop_body) | |
10382 | tree loop_body; | |
10383 | { | |
10384 | tree loop = build (LOOP_EXPR, NULL_TREE, loop_body); | |
10385 | TREE_SIDE_EFFECTS (loop) = 1; | |
10386 | PUSH_LOOP (loop); | |
10387 | return loop; | |
10388 | } | |
10389 | ||
10390 | /* Create a loop body according to the following structure: | |
10391 | COMPOUND_EXPR | |
10392 | COMPOUND_EXPR (loop main body) | |
10393 | EXIT_EXPR (this order is for while/for loops. | |
10394 | LABELED_BLOCK_EXPR the order is reversed for do loops) | |
34f4db93 | 10395 | LABEL_DECL (a continue occuring here branches at the |
e04a16fb AG |
10396 | BODY end of this labeled block) |
10397 | INCREMENT (if any) | |
10398 | ||
10399 | REVERSED, if non zero, tells that the loop condition expr comes | |
b67d701b PB |
10400 | after the body, like in the do-while loop. |
10401 | ||
10402 | To obtain a loop, the loop body structure described above is | |
10403 | encapsulated within a LOOP_EXPR surrounded by a LABELED_BLOCK_EXPR: | |
10404 | ||
10405 | LABELED_BLOCK_EXPR | |
10406 | LABEL_DECL (use this label to exit the loop) | |
10407 | LOOP_EXPR | |
10408 | <structure described above> */ | |
e04a16fb AG |
10409 | |
10410 | static tree | |
10411 | build_loop_body (location, condition, reversed) | |
10412 | int location; | |
10413 | tree condition; | |
10414 | int reversed; | |
10415 | { | |
0a2138e2 | 10416 | tree first, second, body; |
e04a16fb AG |
10417 | |
10418 | condition = build (EXIT_EXPR, NULL_TREE, condition); /* Force walk */ | |
10419 | EXPR_WFL_LINECOL (condition) = location; /* For accurate error report */ | |
10420 | condition = build_debugable_stmt (location, condition); | |
10421 | TREE_SIDE_EFFECTS (condition) = 1; | |
10422 | ||
10423 | body = generate_labeled_block (); | |
10424 | first = (reversed ? body : condition); | |
10425 | second = (reversed ? condition : body); | |
10426 | return | |
10427 | build (COMPOUND_EXPR, NULL_TREE, | |
9bbc7d9f | 10428 | build (COMPOUND_EXPR, NULL_TREE, first, second), empty_stmt_node); |
e04a16fb AG |
10429 | } |
10430 | ||
10431 | /* Install CONDITION (if any) and loop BODY (using REVERSED to tell | |
10432 | their order) on the current loop. Unlink the current loop from the | |
10433 | loop list. */ | |
10434 | ||
10435 | static tree | |
10436 | complete_loop_body (location, condition, body, reversed) | |
10437 | int location; | |
10438 | tree condition, body; | |
10439 | int reversed; | |
10440 | { | |
10441 | tree to_return = ctxp->current_loop; | |
10442 | tree loop_body = LOOP_EXPR_BODY (to_return); | |
10443 | if (condition) | |
10444 | { | |
10445 | tree cnode = LOOP_EXPR_BODY_CONDITION_EXPR (loop_body, reversed); | |
10446 | /* We wrapped the EXIT_EXPR around a WFL so we can debug it. | |
10447 | The real EXIT_EXPR is one operand further. */ | |
10448 | EXPR_WFL_LINECOL (cnode) = location; | |
10449 | /* This one is for accurate error reports */ | |
10450 | EXPR_WFL_LINECOL (TREE_OPERAND (cnode, 0)) = location; | |
10451 | TREE_OPERAND (TREE_OPERAND (cnode, 0), 0) = condition; | |
10452 | } | |
10453 | LOOP_EXPR_BODY_BODY_EXPR (loop_body, reversed) = body; | |
10454 | POP_LOOP (); | |
10455 | return to_return; | |
10456 | } | |
10457 | ||
10458 | /* Tailored version of complete_loop_body for FOR loops, when FOR | |
10459 | loops feature the condition part */ | |
10460 | ||
10461 | static tree | |
10462 | complete_for_loop (location, condition, update, body) | |
10463 | int location; | |
10464 | tree condition, update, body; | |
10465 | { | |
10466 | /* Put the condition and the loop body in place */ | |
10467 | tree loop = complete_loop_body (location, condition, body, 0); | |
10468 | /* LOOP is the current loop which has been now popped of the loop | |
10469 | stack. Install the update block */ | |
10470 | LOOP_EXPR_BODY_UPDATE_BLOCK (LOOP_EXPR_BODY (loop)) = update; | |
10471 | return loop; | |
10472 | } | |
10473 | ||
10474 | /* If the loop isn't surrounded by a labeled statement, create one and | |
10475 | insert LOOP as it's body. */ | |
10476 | ||
10477 | static tree | |
10478 | patch_loop_statement (loop) | |
10479 | tree loop; | |
10480 | { | |
0a2138e2 | 10481 | tree loop_label, to_return_as_loop; |
e04a16fb AG |
10482 | |
10483 | if (LOOP_HAS_LABEL_P (loop)) | |
10484 | { | |
10485 | loop_label = ctxp->current_labeled_block; | |
10486 | to_return_as_loop = loop; | |
10487 | } | |
10488 | else | |
10489 | { | |
10490 | loop_label = generate_labeled_block (); | |
10491 | LABELED_BLOCK_BODY (loop_label) = loop; | |
10492 | PUSH_LABELED_BLOCK (loop_label); | |
10493 | to_return_as_loop = loop_label; | |
10494 | } | |
10495 | TREE_TYPE (to_return_as_loop) = void_type_node; | |
10496 | return to_return_as_loop; | |
10497 | } | |
10498 | ||
10499 | /* 14.13, 14.14: break and continue Statements */ | |
10500 | ||
10501 | /* Build a break or a continue statement. a null NAME indicates an | |
10502 | unlabeled break/continue statement. */ | |
10503 | ||
10504 | static tree | |
10505 | build_bc_statement (location, is_break, name) | |
10506 | int location, is_break; | |
10507 | tree name; | |
10508 | { | |
10509 | tree break_continue, label_block_expr = NULL_TREE; | |
10510 | ||
10511 | if (name) | |
10512 | { | |
10513 | if (!(label_block_expr = IDENTIFIER_LOCAL_VALUE | |
10514 | (merge_qualified_name (label_id, EXPR_WFL_NODE (name))))) | |
10515 | /* Null means that we don't have a target for this named | |
10516 | break/continue. In this case, we make the target to be the | |
10517 | label name, so that the error can be reported accuratly in | |
10518 | patch_bc_statement. */ | |
10519 | label_block_expr = EXPR_WFL_NODE (name); | |
10520 | } | |
10521 | /* Unlabeled break/continue will be handled during the | |
10522 | break/continue patch operation */ | |
10523 | break_continue | |
10524 | = build (EXIT_BLOCK_EXPR, NULL_TREE, label_block_expr, NULL_TREE); | |
10525 | ||
10526 | IS_BREAK_STMT_P (break_continue) = is_break; | |
10527 | TREE_SIDE_EFFECTS (break_continue) = 1; | |
10528 | EXPR_WFL_LINECOL (break_continue) = location; | |
b67d701b | 10529 | break_continue = build_debugable_stmt (location, break_continue); |
e04a16fb AG |
10530 | return break_continue; |
10531 | } | |
10532 | ||
10533 | /* Verification of a break/continue statement. */ | |
10534 | ||
10535 | static tree | |
10536 | patch_bc_statement (node) | |
10537 | tree node; | |
10538 | { | |
10539 | tree bc_label = EXIT_BLOCK_LABELED_BLOCK (node), target_stmt; | |
10540 | int is_unlabeled = 0; | |
b67d701b | 10541 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); |
e04a16fb AG |
10542 | |
10543 | /* Not having a target means that the break/continue statement is | |
b67d701b | 10544 | unlabeled. We try to find a decent label for it */ |
e04a16fb AG |
10545 | if (!bc_label) |
10546 | { | |
10547 | is_unlabeled = 1; | |
b67d701b | 10548 | /* There should be a loop/switch to branch to */ |
e04a16fb AG |
10549 | if (ctxp->current_loop) |
10550 | { | |
b67d701b PB |
10551 | if (TREE_CODE (ctxp->current_loop) == LOOP_EXPR) |
10552 | { | |
10553 | /* At that stage, we're in the loop body, which is | |
10554 | encapsulated around a LABELED_BLOCK_EXPR. So searching | |
10555 | the current loop label requires us to consider the | |
10556 | labeled block before the current one. */ | |
10557 | if (!LOOP_HAS_LABEL_SKIP_P (ctxp->current_loop)) | |
10558 | fatal ("unlabeled loop has no installed label -- " | |
10559 | "patch_bc_statement"); | |
10560 | bc_label = TREE_CHAIN (ctxp->current_labeled_block); | |
10561 | } | |
10562 | /* For a SWITCH statement, this is the current one */ | |
10563 | else | |
10564 | bc_label = ctxp->current_labeled_block; | |
e04a16fb AG |
10565 | } |
10566 | /* Not having a loop to break/continue to is an error */ | |
10567 | else | |
10568 | { | |
10569 | parse_error_context (wfl_operator, "`%s' must be in loop%s", | |
10570 | (IS_BREAK_STMT_P (node) ? "break" : "continue"), | |
10571 | (IS_BREAK_STMT_P (node) ? " or switch" : "")); | |
10572 | return error_mark_node; | |
10573 | } | |
10574 | } | |
10575 | /* Having an identifier here means that the target is unknown. */ | |
10576 | else if (TREE_CODE (bc_label) == IDENTIFIER_NODE) | |
10577 | { | |
10578 | parse_error_context (wfl_operator, "No label definition found for `%s'", | |
10579 | IDENTIFIER_POINTER (bc_label)); | |
10580 | return error_mark_node; | |
10581 | } | |
10582 | ||
10583 | /* Find the statement we're targeting. */ | |
10584 | target_stmt = LABELED_BLOCK_BODY (bc_label); | |
10585 | ||
34f4db93 APB |
10586 | /* Target loop is slightly burrowed in the case of a for loop, it |
10587 | appears at the first sight to be a block. */ | |
10588 | if (TREE_CODE (target_stmt) == BLOCK) | |
10589 | { | |
10590 | tree sub = BLOCK_SUBBLOCKS (target_stmt); | |
10591 | if (sub && TREE_CODE (sub) == COMPOUND_EXPR && TREE_OPERAND (sub, 1) | |
10592 | && TREE_CODE (TREE_OPERAND (sub, 1)) == LOOP_EXPR) | |
10593 | target_stmt = TREE_OPERAND (sub, 1); | |
10594 | } | |
10595 | ||
e04a16fb AG |
10596 | /* 14.13 The break Statement */ |
10597 | if (IS_BREAK_STMT_P (node)) | |
10598 | { | |
10599 | /* Named break are always fine, as far as they have a target | |
10600 | (already verified). Anonymous break need to target | |
10601 | while/do/for/switch */ | |
10602 | if (is_unlabeled && | |
b67d701b | 10603 | !(TREE_CODE (target_stmt) == LOOP_EXPR /* do/while/for */ |
34f4db93 | 10604 | || TREE_CODE (target_stmt) == SWITCH_EXPR)) /* switch */ |
e04a16fb AG |
10605 | { |
10606 | parse_error_context (wfl_operator, | |
10607 | "`break' must be in loop or switch"); | |
10608 | return error_mark_node; | |
10609 | } | |
10610 | /* If previously unlabeled, install the new found label */ | |
10611 | if (is_unlabeled) | |
10612 | EXIT_BLOCK_LABELED_BLOCK (node) = bc_label; | |
10613 | } | |
10614 | /* 14.14 The continue Statement */ | |
34f4db93 | 10615 | /* The continue statement must always target a loop, unnamed or not. */ |
e04a16fb | 10616 | else |
34f4db93 | 10617 | { |
e04a16fb AG |
10618 | if (TREE_CODE (target_stmt) != LOOP_EXPR) /* do/while/for */ |
10619 | { | |
10620 | parse_error_context (wfl_operator, "`continue' must be in loop"); | |
10621 | return error_mark_node; | |
10622 | } | |
10623 | /* Everything looks good. We can fix the `continue' jump to go | |
34f4db93 APB |
10624 | at the place in the loop were the continue is. For unlabeled |
10625 | continue, the continuation point is the current labeled | |
10626 | block, by construction. */ | |
10627 | if (is_unlabeled) | |
10628 | EXIT_BLOCK_LABELED_BLOCK (node) = | |
10629 | bc_label = ctxp->current_labeled_block; | |
e04a16fb AG |
10630 | } |
10631 | ||
15fdcfe9 PB |
10632 | CAN_COMPLETE_NORMALLY (bc_label) = 1; |
10633 | ||
e04a16fb AG |
10634 | /* Our break/continue don't return values. */ |
10635 | TREE_TYPE (node) = void_type_node; | |
10636 | /* Encapsulate the break within a compound statement so that it's | |
10637 | expanded all the times by expand_expr (and not clobered | |
10638 | sometimes, like after a if statement) */ | |
10639 | node = add_stmt_to_compound (NULL_TREE, void_type_node, node); | |
10640 | TREE_SIDE_EFFECTS (node) = 1; | |
10641 | return node; | |
10642 | } | |
10643 | ||
10644 | /* Process the exit expression belonging to a loop. Its type must be | |
10645 | boolean. */ | |
10646 | ||
10647 | static tree | |
10648 | patch_exit_expr (node) | |
10649 | tree node; | |
10650 | { | |
10651 | tree expression = TREE_OPERAND (node, 0); | |
10652 | TREE_TYPE (node) = error_mark_node; | |
10653 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
10654 | ||
10655 | /* The type of expression must be boolean */ | |
10656 | if (TREE_TYPE (expression) != boolean_type_node) | |
10657 | { | |
10658 | parse_error_context | |
10659 | (wfl_operator, | |
10660 | "Incompatible type for loop conditional. Can't convert `%s' to " | |
10661 | "`boolean'", | |
0a2138e2 | 10662 | lang_printable_name (TREE_TYPE (expression), 0)); |
e04a16fb AG |
10663 | return error_mark_node; |
10664 | } | |
10665 | /* Now we know things are allright, invert the condition, fold and | |
10666 | return */ | |
10667 | TREE_OPERAND (node, 0) = | |
10668 | fold (build1 (TRUTH_NOT_EXPR, boolean_type_node, expression)); | |
15fdcfe9 PB |
10669 | |
10670 | if (! integer_zerop (TREE_OPERAND (node, 0)) | |
10671 | && ctxp->current_loop != NULL_TREE | |
10672 | && TREE_CODE (ctxp->current_loop) == LOOP_EXPR) | |
10673 | CAN_COMPLETE_NORMALLY (ctxp->current_loop) = 1; | |
10674 | if (! integer_onep (TREE_OPERAND (node, 0))) | |
10675 | CAN_COMPLETE_NORMALLY (node) = 1; | |
10676 | ||
10677 | ||
e04a16fb AG |
10678 | TREE_TYPE (node) = void_type_node; |
10679 | return node; | |
10680 | } | |
b67d701b PB |
10681 | |
10682 | /* 14.9 Switch statement */ | |
10683 | ||
10684 | static tree | |
10685 | patch_switch_statement (node) | |
10686 | tree node; | |
10687 | { | |
c877974e | 10688 | tree se = TREE_OPERAND (node, 0), se_type; |
b67d701b PB |
10689 | |
10690 | /* Complete the switch expression */ | |
10691 | se = TREE_OPERAND (node, 0) = java_complete_tree (se); | |
10692 | se_type = TREE_TYPE (se); | |
10693 | /* The type of the switch expression must be char, byte, short or | |
10694 | int */ | |
10695 | if (!JINTEGRAL_TYPE_P (se_type)) | |
10696 | { | |
10697 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node); | |
10698 | parse_error_context (wfl_operator, "Incompatible type for `switch'. " | |
10699 | "Can't convert `%s' to `int'", | |
0a2138e2 | 10700 | lang_printable_name (se_type, 0)); |
b67d701b PB |
10701 | /* This is what java_complete_tree will check */ |
10702 | TREE_OPERAND (node, 0) = error_mark_node; | |
10703 | return error_mark_node; | |
10704 | } | |
10705 | ||
15fdcfe9 | 10706 | TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1)); |
b67d701b PB |
10707 | |
10708 | /* Ready to return */ | |
15fdcfe9 | 10709 | if (TREE_CODE (TREE_OPERAND (node, 1)) == ERROR_MARK) |
b67d701b PB |
10710 | { |
10711 | TREE_TYPE (node) = error_mark_node; | |
10712 | return error_mark_node; | |
10713 | } | |
10714 | TREE_TYPE (node) = void_type_node; | |
10715 | TREE_SIDE_EFFECTS (node) = 1; | |
15fdcfe9 | 10716 | CAN_COMPLETE_NORMALLY (node) |
c877974e APB |
10717 | = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)) |
10718 | || ! SWITCH_HAS_DEFAULT (node); | |
b67d701b PB |
10719 | return node; |
10720 | } | |
10721 | ||
b67d701b PB |
10722 | /* 14.18 The try statement */ |
10723 | ||
10724 | /* Wrap BLOCK around a LABELED_BLOCK, set DECL to the newly generated | |
10725 | exit labeld and issue a jump to FINALLY_LABEL: | |
10726 | ||
10727 | LABELED_BLOCK | |
10728 | BLOCK | |
10729 | <orignal_statments> | |
10730 | DECL = &LABEL_DECL | |
10731 | GOTO_EXPR | |
10732 | FINALLY_LABEL | |
10733 | LABEL_DECL */ | |
10734 | ||
10735 | static tree | |
10736 | build_jump_to_finally (block, decl, finally_label, type) | |
10737 | tree block, decl, finally_label, type; | |
10738 | { | |
10739 | tree stmt; | |
10740 | tree new_block = build (LABELED_BLOCK_EXPR, type, | |
10741 | create_label_decl (generate_name ()), block); | |
10742 | ||
10743 | stmt = build (MODIFY_EXPR, void_type_node, decl, | |
10744 | build_address_of (LABELED_BLOCK_LABEL (new_block))); | |
10745 | TREE_SIDE_EFFECTS (stmt) = 1; | |
de4c7b02 | 10746 | CAN_COMPLETE_NORMALLY (stmt) = 1; |
b67d701b PB |
10747 | add_stmt_to_block (block, type, stmt); |
10748 | stmt = build (GOTO_EXPR, void_type_node, finally_label); | |
10749 | TREE_SIDE_EFFECTS (stmt) = 1; | |
10750 | add_stmt_to_block (block, type, stmt); | |
10751 | return new_block; | |
10752 | } | |
10753 | ||
10754 | static tree | |
a7d8d81f | 10755 | build_try_statement (location, try_block, catches) |
b67d701b | 10756 | int location; |
a7d8d81f PB |
10757 | tree try_block, catches; |
10758 | { | |
10759 | tree node = build (TRY_EXPR, NULL_TREE, try_block, catches); | |
b67d701b | 10760 | EXPR_WFL_LINECOL (node) = location; |
a7d8d81f | 10761 | return node; |
b67d701b PB |
10762 | } |
10763 | ||
a7d8d81f PB |
10764 | static tree |
10765 | build_try_finally_statement (location, try_block, finally) | |
10766 | int location; | |
10767 | tree try_block, finally; | |
b67d701b | 10768 | { |
a7d8d81f PB |
10769 | tree node = build (TRY_FINALLY_EXPR, NULL_TREE, try_block, finally); |
10770 | EXPR_WFL_LINECOL (node) = location; | |
10771 | return node; | |
b67d701b PB |
10772 | } |
10773 | ||
10774 | static tree | |
10775 | patch_try_statement (node) | |
10776 | tree node; | |
10777 | { | |
10778 | int error_found = 0; | |
10779 | tree try = TREE_OPERAND (node, 0); | |
10780 | /* Exception handlers are considered in left to right order */ | |
10781 | tree catch = nreverse (TREE_OPERAND (node, 1)); | |
b9f7e36c | 10782 | tree current, caught_type_list = NULL_TREE; |
b67d701b PB |
10783 | |
10784 | /* Check catch clauses, if any. Every time we find an error, we try | |
b9f7e36c APB |
10785 | to process the next catch clause. We process the catch clause before |
10786 | the try block so that when processing the try block we can check thrown | |
10787 | exceptions againts the caught type list. */ | |
b67d701b PB |
10788 | for (current = catch; current; current = TREE_CHAIN (current)) |
10789 | { | |
10790 | tree carg_decl, carg_type; | |
10791 | tree sub_current, catch_block, catch_clause; | |
10792 | int unreachable; | |
10793 | ||
b67d701b | 10794 | /* At this point, the structure of the catch clause is |
b67d701b PB |
10795 | CATCH_EXPR (catch node) |
10796 | BLOCK (with the decl of the parameter) | |
10797 | COMPOUND_EXPR | |
7525cc04 | 10798 | MODIFY_EXPR (assignment of the catch parameter) |
b67d701b | 10799 | BLOCK (catch clause block) |
a7d8d81f PB |
10800 | */ |
10801 | catch_clause = TREE_OPERAND (current, 0); | |
b67d701b PB |
10802 | carg_decl = BLOCK_EXPR_DECLS (catch_clause); |
10803 | carg_type = TREE_TYPE (TREE_TYPE (carg_decl)); | |
10804 | ||
10805 | /* Catch clauses can't have more than one parameter declared, | |
10806 | but it's already enforced by the grammar. Make sure that the | |
10807 | only parameter of the clause statement in of class Throwable | |
10808 | or a subclass of Throwable, but that was done earlier. The | |
10809 | catch clause parameter type has also been resolved. */ | |
10810 | ||
10811 | /* Just make sure that the catch clause parameter type inherits | |
10812 | from java.lang.Throwable */ | |
10813 | if (!inherits_from_p (carg_type, throwable_type_node)) | |
10814 | { | |
10815 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current); | |
10816 | parse_error_context (wfl_operator, | |
10817 | "Can't catch class `%s'. Catch clause " | |
10818 | "parameter type must be a subclass of " | |
10819 | "class `java.lang.Throwable'", | |
0a2138e2 | 10820 | lang_printable_name (carg_type, 0)); |
b67d701b PB |
10821 | error_found = 1; |
10822 | continue; | |
10823 | } | |
10824 | ||
10825 | /* Partial check for unreachable catch statement: The catch | |
10826 | clause is reachable iff is no earlier catch block A in | |
10827 | the try statement such that the type of the catch | |
10828 | clause's parameter is the same as or a subclass of the | |
10829 | type of A's parameter */ | |
10830 | unreachable = 0; | |
10831 | for (sub_current = catch; | |
10832 | sub_current != current; sub_current = TREE_CHAIN (sub_current)) | |
10833 | { | |
10834 | tree sub_catch_clause, decl; | |
a7d8d81f | 10835 | sub_catch_clause = TREE_OPERAND (sub_current, 0); |
b67d701b PB |
10836 | decl = BLOCK_EXPR_DECLS (sub_catch_clause); |
10837 | ||
10838 | if (inherits_from_p (carg_type, TREE_TYPE (TREE_TYPE (decl)))) | |
10839 | { | |
10840 | EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current); | |
10841 | parse_error_context | |
10842 | (wfl_operator, "`catch' not reached because of the catch " | |
10843 | "clause at line %d", EXPR_WFL_LINENO (sub_current)); | |
10844 | unreachable = error_found = 1; | |
10845 | break; | |
10846 | } | |
10847 | } | |
b67d701b PB |
10848 | /* Complete the catch clause block */ |
10849 | catch_block = java_complete_tree (TREE_OPERAND (current, 0)); | |
10850 | if (catch_block == error_mark_node) | |
10851 | { | |
10852 | error_found = 1; | |
10853 | continue; | |
10854 | } | |
15fdcfe9 PB |
10855 | if (CAN_COMPLETE_NORMALLY (catch_block)) |
10856 | CAN_COMPLETE_NORMALLY (node) = 1; | |
b67d701b | 10857 | TREE_OPERAND (current, 0) = catch_block; |
15fdcfe9 PB |
10858 | |
10859 | if (unreachable) | |
10860 | continue; | |
10861 | ||
10862 | /* Things to do here: the exception must be thrown */ | |
10863 | ||
10864 | /* Link this type to the caught type list */ | |
10865 | caught_type_list = tree_cons (NULL_TREE, carg_type, caught_type_list); | |
b67d701b PB |
10866 | } |
10867 | ||
b9f7e36c APB |
10868 | PUSH_EXCEPTIONS (caught_type_list); |
10869 | if ((try = java_complete_tree (try)) == error_mark_node) | |
10870 | error_found = 1; | |
15fdcfe9 PB |
10871 | if (CAN_COMPLETE_NORMALLY (try)) |
10872 | CAN_COMPLETE_NORMALLY (node) = 1; | |
b9f7e36c APB |
10873 | POP_EXCEPTIONS (); |
10874 | ||
b67d701b PB |
10875 | /* Verification ends here */ |
10876 | if (error_found) | |
10877 | return error_mark_node; | |
10878 | ||
10879 | TREE_OPERAND (node, 0) = try; | |
10880 | TREE_OPERAND (node, 1) = catch; | |
b67d701b PB |
10881 | TREE_TYPE (node) = void_type_node; |
10882 | return node; | |
10883 | } | |
b9f7e36c APB |
10884 | |
10885 | /* 14.17 The synchronized Statement */ | |
10886 | ||
10887 | static tree | |
10888 | patch_synchronized_statement (node, wfl_op1) | |
10889 | tree node, wfl_op1; | |
10890 | { | |
5a005d9e | 10891 | tree expr = java_complete_tree (TREE_OPERAND (node, 0)); |
b9f7e36c | 10892 | tree block = TREE_OPERAND (node, 1); |
5a005d9e | 10893 | |
d8fccff5 | 10894 | tree enter, exit, expr_decl, assignment; |
5a005d9e PB |
10895 | |
10896 | if (expr == error_mark_node) | |
10897 | { | |
10898 | block = java_complete_tree (block); | |
10899 | return expr; | |
10900 | } | |
b9f7e36c APB |
10901 | |
10902 | /* The TYPE of expr must be a reference type */ | |
5a005d9e | 10903 | if (!JREFERENCE_TYPE_P (TREE_TYPE (expr))) |
b9f7e36c APB |
10904 | { |
10905 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op1); | |
10906 | parse_error_context (wfl_operator, "Incompatible type for `synchronized'" | |
10907 | ". Can't convert `%s' to `java.lang.Object'", | |
0a2138e2 | 10908 | lang_printable_name (TREE_TYPE (expr), 0)); |
b9f7e36c APB |
10909 | return error_mark_node; |
10910 | } | |
10911 | ||
10912 | /* Generate a try-finally for the synchronized statement, except | |
10913 | that the handler that catches all throw exception calls | |
10914 | _Jv_MonitorExit and then rethrow the exception. | |
10915 | The synchronized statement is then implemented as: | |
10916 | TRY | |
10917 | { | |
10918 | _Jv_MonitorEnter (expression) | |
10919 | synchronized_block | |
10920 | _Jv_MonitorExit (expression) | |
10921 | } | |
10922 | CATCH_ALL | |
10923 | { | |
10924 | e = _Jv_exception_info (); | |
10925 | _Jv_MonitorExit (expression) | |
10926 | Throw (e); | |
10927 | } */ | |
10928 | ||
5a005d9e PB |
10929 | expr_decl = build_decl (VAR_DECL, generate_name (), TREE_TYPE (expr)); |
10930 | BUILD_MONITOR_ENTER (enter, expr_decl); | |
10931 | BUILD_MONITOR_EXIT (exit, expr_decl); | |
10932 | CAN_COMPLETE_NORMALLY (enter) = 1; | |
10933 | CAN_COMPLETE_NORMALLY (exit) = 1; | |
96847892 AH |
10934 | assignment = build (MODIFY_EXPR, NULL_TREE, expr_decl, expr); |
10935 | TREE_SIDE_EFFECTS (assignment) = 1; | |
5a005d9e PB |
10936 | node = build1 (CLEANUP_POINT_EXPR, NULL_TREE, |
10937 | build (COMPOUND_EXPR, NULL_TREE, | |
10938 | build (WITH_CLEANUP_EXPR, NULL_TREE, | |
10939 | build (COMPOUND_EXPR, NULL_TREE, | |
96847892 | 10940 | assignment, enter), |
5a005d9e PB |
10941 | NULL_TREE, exit), |
10942 | block)); | |
10943 | node = build_expr_block (node, expr_decl); | |
10944 | ||
10945 | return java_complete_tree (node); | |
b9f7e36c APB |
10946 | } |
10947 | ||
10948 | /* 14.16 The throw Statement */ | |
10949 | ||
10950 | static tree | |
10951 | patch_throw_statement (node, wfl_op1) | |
10952 | tree node, wfl_op1; | |
10953 | { | |
10954 | tree expr = TREE_OPERAND (node, 0); | |
10955 | tree type = TREE_TYPE (expr); | |
10956 | int unchecked_ok = 0, tryblock_throws_ok = 0; | |
10957 | ||
10958 | /* Thrown expression must be assignable to java.lang.Throwable */ | |
10959 | if (!try_reference_assignconv (throwable_type_node, expr)) | |
10960 | { | |
10961 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op1); | |
10962 | parse_error_context (wfl_operator, "Can't throw `%s'; it must be a " | |
10963 | "subclass of class `java.lang.Throwable'", | |
0a2138e2 | 10964 | lang_printable_name (type, 0)); |
b9f7e36c APB |
10965 | /* If the thrown expression was a reference, we further the |
10966 | compile-time check. */ | |
10967 | if (!JREFERENCE_TYPE_P (type)) | |
10968 | return error_mark_node; | |
10969 | } | |
10970 | ||
10971 | /* At least one of the following must be true */ | |
10972 | ||
10973 | /* The type of the throw expression is a not checked exception, | |
10974 | i.e. is a unchecked expression. */ | |
c877974e | 10975 | unchecked_ok = IS_UNCHECKED_EXCEPTION_P (TREE_TYPE (type)); |
b9f7e36c APB |
10976 | |
10977 | /* Throw is contained in a try statement and at least one catch | |
10978 | clause can receive the thrown expression or the current method is | |
10979 | declared to throw such an exception. Or, the throw statement is | |
10980 | contained in a method or constructor declaration and the type of | |
10981 | the Expression is assignable to at least one type listed in the | |
10982 | throws clause the declaration. */ | |
10983 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op1); | |
10984 | if (!unchecked_ok) | |
10985 | tryblock_throws_ok = | |
0a2138e2 | 10986 | check_thrown_exceptions_do (TREE_TYPE (expr)); |
b9f7e36c APB |
10987 | if (!(unchecked_ok || tryblock_throws_ok)) |
10988 | { | |
10989 | /* If there is a surrounding try block that has no matching | |
10990 | clatch clause, report it first. A surrounding try block exits | |
10991 | only if there is something after the list of checked | |
10992 | exception thrown by the current function (if any). */ | |
10993 | if (IN_TRY_BLOCK_P ()) | |
10994 | parse_error_context (wfl_operator, "Checked exception `%s' can't be " | |
10995 | "caught by any of the catch clause(s) " | |
10996 | "of the surrounding `try' block", | |
0a2138e2 | 10997 | lang_printable_name (type, 0)); |
b9f7e36c APB |
10998 | /* If we have no surrounding try statement and the method doesn't have |
10999 | any throws, report it now. FIXME */ | |
11000 | else if (!EXCEPTIONS_P (currently_caught_type_list) | |
11001 | && !tryblock_throws_ok) | |
11002 | parse_error_context (wfl_operator, "Checked exception `%s' isn't " | |
11003 | "thrown from a `try' block", | |
0a2138e2 | 11004 | lang_printable_name (type, 0)); |
b9f7e36c APB |
11005 | /* Otherwise, the current method doesn't have the appropriate |
11006 | throws declaration */ | |
11007 | else | |
11008 | parse_error_context (wfl_operator, "Checked exception `%s' doesn't " | |
11009 | "match any of current method's `throws' " | |
11010 | "declaration(s)", | |
0a2138e2 | 11011 | lang_printable_name (type, 0)); |
b9f7e36c APB |
11012 | return error_mark_node; |
11013 | } | |
11014 | ||
11015 | /* If a throw statement is contained in a static initializer, then a | |
11016 | compile-time check ensures that either its value is always an | |
11017 | unchecked exception or its value is always caught by some try | |
11018 | statement that contains it. FIXME, static initializer. */ | |
11019 | ||
15fdcfe9 PB |
11020 | if (! flag_emit_class_files) |
11021 | BUILD_THROW (node, expr); | |
b9f7e36c APB |
11022 | return node; |
11023 | } | |
11024 | ||
11025 | /* Check that exception said to be thrown by method DECL can be | |
11026 | effectively caught from where DECL is invoked. */ | |
11027 | ||
11028 | static void | |
11029 | check_thrown_exceptions (location, decl) | |
11030 | int location; | |
11031 | tree decl; | |
11032 | { | |
11033 | tree throws; | |
11034 | /* For all the unchecked exceptions thrown by DECL */ | |
11035 | for (throws = DECL_FUNCTION_THROWS (decl); throws; | |
11036 | throws = TREE_CHAIN (throws)) | |
0a2138e2 | 11037 | if (!check_thrown_exceptions_do (TREE_VALUE (throws))) |
b9f7e36c | 11038 | { |
3e78f871 PB |
11039 | #if 1 |
11040 | /* Temporary hack to suppresses errors about cloning arrays. FIXME */ | |
11041 | if (DECL_NAME (decl) == get_identifier ("clone")) | |
11042 | continue; | |
11043 | #endif | |
b9f7e36c APB |
11044 | EXPR_WFL_LINECOL (wfl_operator) = location; |
11045 | parse_error_context | |
11046 | (wfl_operator, "Exception `%s' must be caught, or it must be " | |
11047 | "declared in the `throws' clause of `%s'", | |
0a2138e2 | 11048 | lang_printable_name (TREE_VALUE (throws), 0), |
b9f7e36c APB |
11049 | IDENTIFIER_POINTER (DECL_NAME (current_function_decl))); |
11050 | } | |
11051 | } | |
11052 | ||
c877974e | 11053 | /* Return 1 if checked EXCEPTION is caught at the current nesting level of |
b9f7e36c APB |
11054 | try-catch blocks, OR is listed in the `throws' clause of the |
11055 | current method. */ | |
11056 | ||
11057 | static int | |
0a2138e2 | 11058 | check_thrown_exceptions_do (exception) |
b9f7e36c APB |
11059 | tree exception; |
11060 | { | |
11061 | tree list = currently_caught_type_list; | |
c877974e | 11062 | resolve_and_layout (exception, NULL_TREE); |
b9f7e36c APB |
11063 | /* First, all the nested try-catch-finally at that stage. The |
11064 | last element contains `throws' clause exceptions, if any. */ | |
c877974e APB |
11065 | if (IS_UNCHECKED_EXCEPTION_P (exception)) |
11066 | return 1; | |
b9f7e36c APB |
11067 | while (list) |
11068 | { | |
11069 | tree caught; | |
11070 | for (caught = TREE_VALUE (list); caught; caught = TREE_CHAIN (caught)) | |
11071 | if (valid_ref_assignconv_cast_p (exception, TREE_VALUE (caught), 0)) | |
11072 | return 1; | |
11073 | list = TREE_CHAIN (list); | |
11074 | } | |
11075 | return 0; | |
11076 | } | |
11077 | ||
11078 | static void | |
11079 | purge_unchecked_exceptions (mdecl) | |
11080 | tree mdecl; | |
11081 | { | |
11082 | tree throws = DECL_FUNCTION_THROWS (mdecl); | |
11083 | tree new = NULL_TREE; | |
11084 | ||
11085 | while (throws) | |
11086 | { | |
11087 | tree next = TREE_CHAIN (throws); | |
c877974e | 11088 | if (!IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (throws))) |
b9f7e36c APB |
11089 | { |
11090 | TREE_CHAIN (throws) = new; | |
11091 | new = throws; | |
11092 | } | |
11093 | throws = next; | |
11094 | } | |
11095 | /* List is inverted here, but it doesn't matter */ | |
11096 | DECL_FUNCTION_THROWS (mdecl) = new; | |
11097 | } | |
22eed1e6 APB |
11098 | |
11099 | /* 15.24 Conditional Operator ?: */ | |
11100 | ||
11101 | static tree | |
11102 | patch_conditional_expr (node, wfl_cond, wfl_op1) | |
11103 | tree node, wfl_cond, wfl_op1; | |
11104 | { | |
11105 | tree cond = TREE_OPERAND (node, 0); | |
11106 | tree op1 = TREE_OPERAND (node, 1); | |
11107 | tree op2 = TREE_OPERAND (node, 2); | |
22eed1e6 | 11108 | tree resulting_type = NULL_TREE; |
ac825856 | 11109 | tree t1, t2, patched; |
22eed1e6 APB |
11110 | int error_found = 0; |
11111 | ||
ac825856 APB |
11112 | /* Operands of ?: might be StringBuffers crafted as a result of a |
11113 | string concatenation. Obtain a descent operand here. */ | |
11114 | if ((patched = patch_string (op1))) | |
11115 | TREE_OPERAND (node, 1) = op1 = patched; | |
11116 | if ((patched = patch_string (op2))) | |
11117 | TREE_OPERAND (node, 2) = op2 = patched; | |
11118 | ||
11119 | t1 = TREE_TYPE (op1); | |
11120 | t2 = TREE_TYPE (op2); | |
11121 | ||
22eed1e6 APB |
11122 | /* The first expression must be a boolean */ |
11123 | if (TREE_TYPE (cond) != boolean_type_node) | |
11124 | { | |
11125 | SET_WFL_OPERATOR (wfl_operator, node, wfl_cond); | |
11126 | parse_error_context (wfl_operator, "Incompatible type for `?:'. Can't " | |
11127 | "convert `%s' to `boolean'", | |
11128 | lang_printable_name (TREE_TYPE (cond), 0)); | |
11129 | error_found = 1; | |
11130 | } | |
11131 | ||
11132 | /* Second and third can be numeric, boolean (i.e. primitive), | |
11133 | references or null. Anything else results in an error */ | |
11134 | if (!((JNUMERIC_TYPE_P (t1) && JNUMERIC_TYPE_P (t2)) | |
11135 | || ((JREFERENCE_TYPE_P (t1) || op1 == null_pointer_node) | |
11136 | && (JREFERENCE_TYPE_P (t2) || op2 == null_pointer_node)) | |
11137 | || (t1 == boolean_type_node && t2 == boolean_type_node))) | |
11138 | error_found = 1; | |
11139 | ||
11140 | /* Determine the type of the conditional expression. Same types are | |
11141 | easy to deal with */ | |
11142 | else if (t1 == t2) | |
11143 | resulting_type = t1; | |
11144 | ||
11145 | /* There are different rules for numeric types */ | |
11146 | else if (JNUMERIC_TYPE_P (t1)) | |
11147 | { | |
11148 | /* if byte/short found, the resulting type is short */ | |
11149 | if ((t1 == byte_type_node && t2 == short_type_node) | |
11150 | || (t1 == short_type_node && t2 == byte_type_node)) | |
11151 | resulting_type = short_type_node; | |
11152 | ||
11153 | /* If t1 is a constant int and t2 is of type byte, short or char | |
11154 | and t1's value fits in t2, then the resulting type is t2 */ | |
11155 | else if ((t1 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 1))) | |
11156 | && JBSC_TYPE_P (t2) && int_fits_type_p (TREE_OPERAND (node, 1), t2)) | |
11157 | resulting_type = t2; | |
11158 | ||
11159 | /* If t2 is a constant int and t1 is of type byte, short or char | |
11160 | and t2's value fits in t1, then the resulting type is t1 */ | |
11161 | else if ((t2 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 2))) | |
11162 | && JBSC_TYPE_P (t1) && int_fits_type_p (TREE_OPERAND (node, 2), t1)) | |
11163 | resulting_type = t1; | |
11164 | ||
11165 | /* Otherwise, binary numeric promotion is applied and the | |
11166 | resulting type is the promoted type of operand 1 and 2 */ | |
11167 | else | |
11168 | resulting_type = binary_numeric_promotion (t2, t2, | |
11169 | &TREE_OPERAND (node, 1), | |
11170 | &TREE_OPERAND (node, 2)); | |
11171 | } | |
11172 | ||
11173 | /* Cases of a reference and a null type */ | |
11174 | else if (JREFERENCE_TYPE_P (t1) && op2 == null_pointer_node) | |
11175 | resulting_type = t1; | |
11176 | ||
11177 | else if (JREFERENCE_TYPE_P (t2) && op1 == null_pointer_node) | |
11178 | resulting_type = t2; | |
11179 | ||
11180 | /* Last case: different reference types. If a type can be converted | |
11181 | into the other one by assignment conversion, the latter | |
11182 | determines the type of the expression */ | |
11183 | else if ((resulting_type = try_reference_assignconv (t1, op2))) | |
11184 | resulting_type = promote_type (t1); | |
11185 | ||
11186 | else if ((resulting_type = try_reference_assignconv (t2, op1))) | |
11187 | resulting_type = promote_type (t2); | |
11188 | ||
11189 | /* If we don't have any resulting type, we're in trouble */ | |
11190 | if (!resulting_type) | |
11191 | { | |
11192 | char *t = strdup (lang_printable_name (t1, 0)); | |
11193 | SET_WFL_OPERATOR (wfl_operator, node, wfl_op1); | |
11194 | parse_error_context (wfl_operator, "Incompatible type for `?:'. Can't " | |
11195 | "convert `%s' to `%s'", t, | |
11196 | lang_printable_name (t2, 0)); | |
11197 | free (t); | |
11198 | error_found = 1; | |
11199 | } | |
11200 | ||
11201 | if (error_found) | |
11202 | { | |
11203 | TREE_TYPE (node) = error_mark_node; | |
11204 | return error_mark_node; | |
11205 | } | |
11206 | ||
11207 | TREE_TYPE (node) = resulting_type; | |
11208 | TREE_SET_CODE (node, COND_EXPR); | |
15fdcfe9 | 11209 | CAN_COMPLETE_NORMALLY (node) = 1; |
22eed1e6 APB |
11210 | return node; |
11211 | } | |
ac825856 | 11212 | |
5b09b33e PB |
11213 | /* Try to constant fold NODE. |
11214 | If NODE is not a constant expression, return NULL_EXPR. | |
11215 | CONTEXT is a static final VAR_DECL whose initializer we are folding. */ | |
11216 | ||
11217 | static tree | |
11218 | fold_constant_for_init (node, context) | |
11219 | tree node; | |
11220 | tree context; | |
11221 | { | |
11222 | tree op0, op1, val; | |
11223 | enum tree_code code = TREE_CODE (node); | |
11224 | ||
11225 | if (code == INTEGER_CST || code == REAL_CST || code == STRING_CST) | |
11226 | return node; | |
11227 | if (TREE_TYPE (node) != NULL_TREE) | |
11228 | return NULL_TREE; | |
11229 | ||
11230 | switch (code) | |
11231 | { | |
5b09b33e PB |
11232 | case PLUS_EXPR: |
11233 | case MINUS_EXPR: | |
bc3ca41b PB |
11234 | case MULT_EXPR: |
11235 | case TRUNC_MOD_EXPR: | |
11236 | case RDIV_EXPR: | |
5b09b33e PB |
11237 | case LSHIFT_EXPR: |
11238 | case RSHIFT_EXPR: | |
11239 | case URSHIFT_EXPR: | |
11240 | case BIT_AND_EXPR: | |
11241 | case BIT_XOR_EXPR: | |
11242 | case BIT_IOR_EXPR: | |
5b09b33e PB |
11243 | case TRUTH_ANDIF_EXPR: |
11244 | case TRUTH_ORIF_EXPR: | |
11245 | case EQ_EXPR: | |
11246 | case NE_EXPR: | |
11247 | case GT_EXPR: | |
11248 | case GE_EXPR: | |
11249 | case LT_EXPR: | |
11250 | case LE_EXPR: | |
11251 | op0 = TREE_OPERAND (node, 0); | |
11252 | op1 = TREE_OPERAND (node, 1); | |
11253 | val = fold_constant_for_init (op0, context); | |
11254 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11255 | return NULL_TREE; | |
11256 | TREE_OPERAND (node, 0) = val; | |
11257 | val = fold_constant_for_init (op1, context); | |
11258 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11259 | return NULL_TREE; | |
11260 | TREE_OPERAND (node, 1) = val; | |
11261 | return patch_binop (node, op0, op1); | |
11262 | ||
11263 | case UNARY_PLUS_EXPR: | |
11264 | case NEGATE_EXPR: | |
11265 | case TRUTH_NOT_EXPR: | |
11266 | case BIT_NOT_EXPR: | |
11267 | case CONVERT_EXPR: | |
11268 | op0 = TREE_OPERAND (node, 0); | |
11269 | val = fold_constant_for_init (op0, context); | |
11270 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11271 | return NULL_TREE; | |
11272 | TREE_OPERAND (node, 0) = val; | |
5a005d9e | 11273 | return patch_unaryop (node, op0); |
5b09b33e PB |
11274 | break; |
11275 | ||
11276 | case COND_EXPR: | |
11277 | val = fold_constant_for_init (TREE_OPERAND (node, 0), context); | |
11278 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11279 | return NULL_TREE; | |
11280 | TREE_OPERAND (node, 0) = val; | |
11281 | val = fold_constant_for_init (TREE_OPERAND (node, 1), context); | |
11282 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11283 | return NULL_TREE; | |
11284 | TREE_OPERAND (node, 1) = val; | |
11285 | val = fold_constant_for_init (TREE_OPERAND (node, 2), context); | |
11286 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11287 | return NULL_TREE; | |
11288 | TREE_OPERAND (node, 2) = val; | |
11289 | return integer_zerop (TREE_OPERAND (node, 0)) ? TREE_OPERAND (node, 1) | |
11290 | : TREE_OPERAND (node, 2); | |
11291 | ||
11292 | case VAR_DECL: | |
11293 | if (! FIELD_STATIC (node) || ! FIELD_FINAL (node) | |
11294 | || DECL_INITIAL (node) == NULL_TREE) | |
11295 | return NULL_TREE; | |
11296 | val = DECL_INITIAL (node); | |
11297 | /* Guard against infinite recursion. */ | |
11298 | DECL_INITIAL (node) = NULL_TREE; | |
11299 | val = fold_constant_for_init (val, DECL_CONTEXT (node)); | |
11300 | DECL_INITIAL (node) = val; | |
11301 | return val; | |
11302 | ||
11303 | case EXPR_WITH_FILE_LOCATION: | |
11304 | /* Compare java_complete_tree and resolve_expression_name. */ | |
11305 | if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */ | |
11306 | || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE) | |
11307 | { | |
11308 | tree name = EXPR_WFL_NODE (node); | |
11309 | tree decl; | |
11310 | if (PRIMARY_P (node)) | |
11311 | return NULL_TREE; | |
11312 | else if (! QUALIFIED_P (name)) | |
11313 | { | |
11314 | decl = lookup_field_wrapper (DECL_CONTEXT (context), name); | |
11315 | if (! FIELD_STATIC (decl)) | |
11316 | return NULL_TREE; | |
11317 | return fold_constant_for_init (decl, decl); | |
11318 | } | |
11319 | else | |
11320 | { | |
11321 | #if 0 | |
11322 | /* Wait until the USE_COMPONENT_REF re-write. FIXME. */ | |
11323 | qualify_ambiguous_name (node); | |
11324 | if (resolve_field_access (node, &decl, NULL) | |
11325 | && decl != NULL_TREE) | |
11326 | return fold_constant_for_init (decl, decl); | |
11327 | #endif | |
11328 | return NULL_TREE; | |
11329 | } | |
11330 | } | |
11331 | else | |
11332 | { | |
11333 | op0 = TREE_OPERAND (node, 0); | |
11334 | val = fold_constant_for_init (op0, context); | |
11335 | if (val == NULL_TREE || ! TREE_CONSTANT (val)) | |
11336 | return NULL_TREE; | |
11337 | TREE_OPERAND (node, 0) = val; | |
11338 | return val; | |
11339 | } | |
11340 | ||
bc3ca41b PB |
11341 | #ifdef USE_COMPONENT_REF |
11342 | case IDENTIFIER: | |
11343 | case COMPONENT_REF: | |
11344 | ?; | |
11345 | #endif | |
11346 | ||
5b09b33e PB |
11347 | default: |
11348 | return NULL_TREE; | |
11349 | } | |
11350 | } | |
bc3ca41b PB |
11351 | |
11352 | #ifdef USE_COMPONENT_REF | |
11353 | /* Context is 'T' for TypeName, 'P' for PackageName, | |
11354 | 'M' for MethodName, 'E' for ExpressionName, and 'A' for AmbiguousName. */ | |
11355 | ||
11356 | tree | |
11357 | resolve_simple_name (name, context) | |
11358 | tree name; | |
11359 | int context; | |
11360 | { | |
11361 | } | |
11362 | ||
11363 | tree | |
11364 | resolve_qualified_name (name, context) | |
11365 | tree name; | |
11366 | int context; | |
11367 | { | |
11368 | } | |
11369 | #endif |