1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
4 This file is part of GNU CC.
6 GNU CC is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2, or (at your option)
11 GNU CC is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with GNU CC; see the file COPYING. If not, write to
18 the Free Software Foundation, 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA.
21 Java and all Java-based marks are trademarks or registered trademarks
22 of Sun Microsystems, Inc. in the United States and other countries.
23 The Free Software Foundation is independent of Sun Microsystems, Inc. */
25 /* Written by Per Bothner <bothner@cygnus.com> */
32 #include "java-except.h"
34 #include "java-tree.h"
43 #ifdef HAVE_NL_LANGINFO
47 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
48 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
49 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
50 #define JPOOL_UTF_DATA(JCF, INDEX) \
51 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
52 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
54 unsigned char save; unsigned char *text; \
55 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
56 text = (JCF)->read_ptr; \
57 save = text[LENGTH]; \
59 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
60 text[LENGTH] = save; \
61 JCF_SKIP (JCF, LENGTH); } while (0)
65 extern struct obstack
*saveable_obstack
;
66 extern struct obstack temporary_obstack
;
67 extern struct obstack permanent_obstack
;
69 /* Set to non-zero value in order to emit class initilization code
70 before static field references. */
71 extern int always_initialize_class_p
;
73 static tree parse_roots
[3] = { NULL_TREE
, NULL_TREE
, NULL_TREE
};
75 /* The FIELD_DECL for the current field. */
76 #define current_field parse_roots[0]
78 /* The METHOD_DECL for the current method. */
79 #define current_method parse_roots[1]
81 /* A list of file names. */
82 #define current_file_list parse_roots[2]
84 /* The Java .class file that provides main_class; the main input file. */
85 static struct JCF main_jcf
[1];
87 /* Declarations of some functions used here. */
88 static void handle_innerclass_attribute
PARAMS ((int count
, JCF
*));
89 static tree give_name_to_class
PARAMS ((JCF
*jcf
, int index
));
90 static void parse_zip_file_entries
PARAMS ((void));
91 static void process_zip_dir
PARAMS ((FILE *));
92 static void parse_source_file_1
PARAMS ((tree
, FILE *));
93 static void parse_source_file_2
PARAMS ((void));
94 static void jcf_parse_source
PARAMS ((void));
95 static int jcf_figure_file_type
PARAMS ((JCF
*));
96 static void parse_class_file
PARAMS ((void));
97 static void set_source_filename
PARAMS ((JCF
*, int));
98 static int predefined_filename_p
PARAMS ((tree
));
99 static void ggc_mark_jcf
PARAMS ((void**));
101 /* Mark (for garbage collection) all the tree nodes that are
102 referenced from JCF's constant pool table. */
108 JCF
*jcf
= *(JCF
**) elt
;
111 CPool
*cpool
= &jcf
->cpool
;
112 int size
= CPOOL_COUNT(cpool
);
114 for (index
= 1; index
< size
; index
++)
116 int tag
= JPOOL_TAG (jcf
, index
);
117 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
118 ggc_mark_tree ((tree
) cpool
->data
[index
]);
123 /* Handle "SourceFile" attribute. */
126 set_source_filename (jcf
, index
)
130 tree sfname_id
= get_name_constant (jcf
, index
);
131 const char *sfname
= IDENTIFIER_POINTER (sfname_id
);
132 if (input_filename
!= NULL
)
134 int old_len
= strlen (input_filename
);
135 int new_len
= IDENTIFIER_LENGTH (sfname_id
);
136 /* Use the current input_filename (derived from the class name)
137 if it has a directory prefix, but otherwise matches sfname. */
138 if (old_len
> new_len
139 && strcmp (sfname
, input_filename
+ old_len
- new_len
) == 0
140 && (input_filename
[old_len
- new_len
- 1] == '/'
141 || input_filename
[old_len
- new_len
- 1] == '\\'))
144 input_filename
= sfname
;
145 DECL_SOURCE_FILE (TYPE_NAME (current_class
)) = sfname
;
146 if (current_class
== main_class
) main_input_filename
= input_filename
;
149 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
151 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
152 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
153 current_class = give_name_to_class (jcf, THIS); \
154 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
156 #define HANDLE_CLASS_INTERFACE(INDEX) \
157 add_interface (current_class, get_class_constant (jcf, INDEX))
159 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
160 { int sig_index = SIGNATURE; \
161 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
162 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
163 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
164 if ((ACCESS_FLAGS) & ACC_FINAL) \
165 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
168 #define HANDLE_END_FIELDS() \
169 (current_field = NULL_TREE)
171 #define HANDLE_CONSTANTVALUE(INDEX) \
172 { tree constant; int index = INDEX; \
173 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
174 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
175 constant = build_utf8_ref (name); \
178 constant = get_constant (jcf, index); \
179 set_constant_value (current_field, constant); }
181 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
182 (current_method = add_method (current_class, ACCESS_FLAGS, \
183 get_name_constant (jcf, NAME), \
184 get_name_constant (jcf, SIGNATURE)), \
185 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
186 DECL_LINENUMBERS_OFFSET (current_method) = 0)
188 #define HANDLE_END_METHODS() \
189 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
190 if (handle_type != current_class) layout_type (handle_type); \
191 current_method = NULL_TREE; }
193 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
194 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
195 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
196 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
197 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
199 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
201 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
202 JCF_SKIP (jcf, n * 10); }
204 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
206 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
207 JCF_SKIP (jcf, n * 4); }
209 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
212 tree list = DECL_FUNCTION_THROWS (current_method); \
215 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
216 list = tree_cons (NULL_TREE, thrown_class, list); \
218 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
221 /* Link seen inner classes to their outer context and register the
222 inner class to its outer context. They will be later loaded. */
223 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
224 handle_innerclass_attribute (COUNT, jcf)
226 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
228 /* Irrelevant decls should have been nullified by the END macros. \
229 We only handle the `Synthetic' attribute on method DECLs. \
230 DECL_ARTIFICIAL on fields is used for something else (See \
231 PUSH_FIELD in java-tree.h) */ \
232 if (current_method) \
233 DECL_ARTIFICIAL (current_method) = 1; \
236 #include "jcf-reader.c"
241 parse_signature (jcf
, sig_index
)
245 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE (jcf
)
246 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
249 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
250 JPOOL_UTF_LENGTH (jcf
, sig_index
));
256 /* Make identifier nodes long enough for the language-specific slots. */
257 set_identifier_size (sizeof (struct lang_identifier
));
268 get_constant (jcf
, index
)
274 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
276 tag
= JPOOL_TAG (jcf
, index
);
277 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
278 return (tree
) jcf
->cpool
.data
[index
];
281 case CONSTANT_Integer
:
283 jint num
= JPOOL_INT(jcf
, index
);
284 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
285 TREE_TYPE (value
) = int_type_node
;
290 jint num
= JPOOL_INT (jcf
, index
);
291 HOST_WIDE_INT lo
, hi
;
292 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
293 num
= JPOOL_INT (jcf
, index
+1) & 0xffffffff;
294 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
295 value
= build_int_2 (lo
, hi
);
296 TREE_TYPE (value
) = long_type_node
;
297 force_fit_type (value
, 0);
300 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
303 jint num
= JPOOL_INT(jcf
, index
);
305 #ifdef REAL_ARITHMETIC
306 d
= REAL_VALUE_FROM_TARGET_SINGLE (num
);
308 union { float f
; jint i
; } u
;
312 value
= build_real (float_type_node
, d
);
315 case CONSTANT_Double
:
317 HOST_WIDE_INT num
[2];
319 HOST_WIDE_INT lo
, hi
;
320 num
[0] = JPOOL_INT (jcf
, index
);
321 lshift_double (num
[0], 0, 32, 64, &lo
, &hi
, 0);
322 num
[0] = JPOOL_INT (jcf
, index
+1);
323 add_double (lo
, hi
, num
[0], 0, &lo
, &hi
);
324 if (FLOAT_WORDS_BIG_ENDIAN
)
334 #ifdef REAL_ARITHMETIC
335 d
= REAL_VALUE_FROM_TARGET_DOUBLE (num
);
338 union { double d
; jint i
[2]; } u
;
339 u
.i
[0] = (jint
) num
[0];
340 u
.i
[1] = (jint
) num
[1];
344 value
= build_real (double_type_node
, d
);
347 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
348 case CONSTANT_String
:
350 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
351 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
352 int utf8_len
= IDENTIFIER_LENGTH (name
);
353 unsigned char *str_ptr
;
355 const unsigned char *utf8
;
358 /* Count the number of Unicode characters in the string,
359 while checking for a malformed Utf8 string. */
360 utf8
= (const unsigned char *) utf8_ptr
;
365 int char_len
= UT8_CHAR_LENGTH (*utf8
);
366 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
367 fatal_error ("bad string constant");
374 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
375 into the new space. */
376 str_ptr
= (unsigned char *) alloca (2 * str_len
);
378 utf8
= (const unsigned char *)utf8_ptr
;
380 for (i
= 0; i
< str_len
; i
++)
383 int char_len
= UT8_CHAR_LENGTH (*utf8
);
387 char_value
= *utf8
++;
390 char_value
= *utf8
++ & 0x1F;
391 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
394 char_value
= *utf8
++ & 0x0F;
395 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
396 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
401 if (BYTES_BIG_ENDIAN
)
403 *str
++ = char_value
>> 8;
404 *str
++ = char_value
& 0xFF;
408 *str
++ = char_value
& 0xFF;
409 *str
++ = char_value
>> 8;
412 value
= build_string (str
- str_ptr
, str_ptr
);
413 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
419 JPOOL_TAG (jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
420 jcf
->cpool
.data
[index
] = (jword
) value
;
423 internal_error ("bad value constant type %d, index %d",
424 JPOOL_TAG (jcf
, index
), index
);
428 get_name_constant (jcf
, index
)
432 tree name
= get_constant (jcf
, index
);
434 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
440 /* Handle reading innerclass attributes. If a non zero entry (denoting
441 a non anonymous entry) is found, We augment the inner class list of
442 the outer context with the newly resolved innerclass. */
445 handle_innerclass_attribute (count
, jcf
)
452 /* Read inner_class_info_index. This may be 0 */
453 int icii
= JCF_readu2 (jcf
);
454 /* Read outer_class_info_index. If the innerclasses attribute
455 entry isn't a member (like an inner class) the value is 0. */
456 int ocii
= JCF_readu2 (jcf
);
457 /* Read inner_name_index. If the class we're dealing with is
458 an annonymous class, it must be 0. */
459 int ini
= JCF_readu2 (jcf
);
460 /* If icii is 0, don't try to read the class. */
463 tree
class = get_class_constant (jcf
, icii
);
464 tree decl
= TYPE_NAME (class);
465 /* Skip reading further if ocii is null */
466 if (DECL_P (decl
) && !CLASS_COMPLETE_P (decl
) && ocii
)
468 tree outer
= TYPE_NAME (get_class_constant (jcf
, ocii
));
469 tree alias
= (ini
? get_name_constant (jcf
, ini
) : NULL_TREE
);
470 DECL_CONTEXT (decl
) = outer
;
471 DECL_INNER_CLASS_LIST (outer
) =
472 tree_cons (decl
, alias
, DECL_INNER_CLASS_LIST (outer
));
473 CLASS_COMPLETE_P (decl
) = 1;
481 give_name_to_class (jcf
, i
)
485 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
486 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
491 int j
= JPOOL_USHORT1 (jcf
, i
);
492 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
493 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
494 JPOOL_UTF_LENGTH (jcf
, j
));
495 this_class
= lookup_class (class_name
);
496 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
498 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
499 main_input_filename
= input_filename
;
501 jcf
->cpool
.data
[i
] = (jword
) this_class
;
502 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
507 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
510 get_class_constant (JCF
*jcf
, int i
)
513 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
514 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
517 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
519 int name_index
= JPOOL_USHORT1 (jcf
, i
);
520 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
521 const char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
522 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
524 if (name
[0] == '[') /* Handle array "classes". */
525 type
= TREE_TYPE (parse_signature_string (name
, nlength
));
528 tree cname
= unmangle_classname (name
, nlength
);
529 type
= lookup_class (cname
);
531 jcf
->cpool
.data
[i
] = (jword
) type
;
532 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
535 type
= (tree
) jcf
->cpool
.data
[i
];
539 /* Read a class with the fully qualified-name NAME.
540 Return 1 iff we read the requested file.
541 (It is still possible we failed if the file did not
542 define the class it is supposed to.) */
550 tree save_current_class
= current_class
;
551 const char *save_input_filename
= input_filename
;
552 JCF
*save_current_jcf
= current_jcf
;
554 if ((icv
= IDENTIFIER_CLASS_VALUE (name
)) != NULL_TREE
)
556 class = TREE_TYPE (icv
);
557 jcf
= TYPE_JCF (class);
564 this_jcf
.zipd
= NULL
;
566 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
573 if (current_jcf
->java_source
)
576 java_parser_context_save_global ();
577 java_push_parser_context ();
578 input_filename
= current_jcf
->filename
;
579 if (JCF_SEEN_IN_ZIP (current_jcf
))
580 read_zip_member(current_jcf
, current_jcf
->zipd
, current_jcf
->zipd
->zipf
);
581 jcf_parse (current_jcf
);
582 java_pop_parser_context (0);
583 java_parser_context_restore_global ();
586 if (! JCF_SEEN_IN_ZIP (current_jcf
))
587 JCF_FINISH (current_jcf
);
589 current_class
= save_current_class
;
590 input_filename
= save_input_filename
;
591 current_jcf
= save_current_jcf
;
595 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
596 called from the parser, otherwise it's a RECORD_TYPE node. If
597 VERBOSE is 1, print error message on failure to load a class. */
599 /* Replace calls to load_class by having callers call read_class directly
600 - and then perhaps rename read_class to load_class. FIXME */
603 load_class (class_or_name
, verbose
)
609 /* class_or_name can be the name of the class we want to load */
610 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
611 name
= class_or_name
;
612 /* In some cases, it's a dependency that we process earlier that
614 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
615 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
616 /* Or it's a type in the making */
618 name
= DECL_NAME (TYPE_NAME (class_or_name
));
620 if (read_class (name
) == 0 && verbose
)
621 error ("Cannot find file for class %s.", IDENTIFIER_POINTER (name
));
624 /* Parse a source file when JCF refers to a source file. */
632 java_parser_context_save_global ();
633 java_push_parser_context ();
634 BUILD_FILENAME_IDENTIFIER_NODE (file
, current_jcf
->filename
);
635 if (wfl_operator
== NULL_TREE
)
636 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
637 EXPR_WFL_FILENAME_NODE (wfl_operator
) = file
;
638 input_filename
= ggc_strdup (current_jcf
->filename
);
639 current_class
= NULL_TREE
;
640 current_function_decl
= NULL_TREE
;
641 if (!HAS_BEEN_ALREADY_PARSED_P (file
))
643 if (!(finput
= fopen (input_filename
, "r")))
644 fatal_io_error ("can't reopen %s", input_filename
);
645 parse_source_file_1 (file
, finput
);
646 parse_source_file_2 ();
648 fatal_io_error ("can't close %s", input_filename
);
650 java_pop_parser_context (IS_A_COMMAND_LINE_FILENAME_P (file
));
651 java_parser_context_restore_global ();
654 /* Parse the .class file JCF. */
663 if (jcf_parse_preamble (jcf
) != 0)
664 fatal_error ("not a valid Java .class file");
665 code
= jcf_parse_constant_pool (jcf
);
667 fatal_error ("error while parsing constant pool");
668 code
= verify_constant_pool (jcf
);
670 fatal_error ("error in constant pool entry #%d\n", code
);
672 jcf_parse_class (jcf
);
673 if (main_class
== NULL_TREE
)
674 main_class
= current_class
;
675 if (! quiet_flag
&& TYPE_NAME (current_class
))
676 fprintf (stderr
, " %s %s",
677 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
678 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
679 if (CLASS_LOADED_P (current_class
))
681 CLASS_LOADED_P (current_class
) = 1;
683 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
685 switch (JPOOL_TAG (jcf
, i
))
688 get_class_constant (jcf
, i
);
693 code
= jcf_parse_fields (jcf
);
695 fatal_error ("error while parsing fields");
696 code
= jcf_parse_methods (jcf
);
698 fatal_error ("error while parsing methods");
699 code
= jcf_parse_final_attributes (jcf
);
701 fatal_error ("error while parsing final attributes");
703 /* The fields of class_type_node are already in correct order. */
704 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
705 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
707 layout_class (current_class
);
708 if (current_class
== object_type_node
)
709 layout_class_methods (object_type_node
);
711 all_class_list
= tree_cons (NULL_TREE
,
712 TYPE_NAME (current_class
), all_class_list
);
714 /* And if we came across inner classes, load them now. */
715 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (current_class
)); current
;
716 current
= TREE_CHAIN (current
))
718 tree name
= DECL_NAME (TREE_PURPOSE (current
));
719 tree decl
= IDENTIFIER_GLOBAL_VALUE (name
);
720 if (decl
&& !CLASS_BEING_LAIDOUT (TREE_TYPE (decl
)))
721 load_class (name
, 1);
726 init_outgoing_cpool ()
728 current_constant_pool_data_ref
= NULL_TREE
;
729 outgoing_cpool
= (struct CPool
*)xmalloc (sizeof (struct CPool
));
730 memset (outgoing_cpool
, 0, sizeof (struct CPool
));
737 const char *save_input_filename
= input_filename
;
738 int save_lineno
= lineno
;
740 java_layout_seen_class_methods ();
742 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
744 debug_start_source_file (input_filename
);
745 init_outgoing_cpool ();
747 /* Currently we always have to emit calls to _Jv_InitClass when
748 compiling from class files. */
749 always_initialize_class_p
= 1;
751 for ( method
= TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class
));
752 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
754 JCF
*jcf
= current_jcf
;
756 if (METHOD_ABSTRACT (method
))
759 if (METHOD_NATIVE (method
))
763 DECL_MAX_LOCALS (method
)
764 = list_length (TYPE_ARG_TYPES (TREE_TYPE (method
)));
765 start_java_method (method
);
766 give_name_to_locals (jcf
);
767 expand_expr_stmt (build_jni_stub (method
));
772 if (DECL_CODE_OFFSET (method
) == 0)
774 error ("missing Code attribute");
779 if (DECL_LINENUMBERS_OFFSET (method
))
782 register unsigned char *ptr
;
783 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
784 linenumber_count
= i
= JCF_readu2 (jcf
);
785 linenumber_table
= ptr
= jcf
->read_ptr
;
787 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
789 int line
= GET_u2 (ptr
);
790 /* Set initial lineno lineno to smallest linenumber.
791 * Needs to be set before init_function_start. */
792 if (lineno
== 0 || line
< lineno
)
798 linenumber_table
= NULL
;
799 linenumber_count
= 0;
802 start_java_method (method
);
804 note_instructions (jcf
, method
);
806 give_name_to_locals (jcf
);
808 /* Actually generate code. */
809 expand_byte_code (jcf
, method
);
814 if (flag_emit_class_files
)
815 write_classfile (current_class
);
819 debug_end_source_file (save_lineno
);
820 input_filename
= save_input_filename
;
821 lineno
= save_lineno
;
824 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
827 parse_source_file_1 (file
, finput
)
831 int save_error_count
= java_error_count
;
832 /* Mark the file as parsed */
833 HAS_BEEN_ALREADY_PARSED_P (file
) = 1;
835 jcf_dependency_add_file (input_filename
, 0);
837 lang_init_source (1); /* Error msgs have no method prototypes */
839 /* There's no point in trying to find the current encoding unless we
840 are going to do something intelligent with it -- hence the test
843 #ifdef HAVE_NL_LANGINFO
844 setlocale (LC_CTYPE
, "");
845 if (current_encoding
== NULL
)
846 current_encoding
= nl_langinfo (CODESET
);
847 #endif /* HAVE_NL_LANGINFO */
848 #endif /* HAVE_ICONV */
849 if (current_encoding
== NULL
|| *current_encoding
== '\0')
850 current_encoding
= DEFAULT_ENCODING
;
852 /* Initialize the parser */
853 java_init_lex (finput
, current_encoding
);
854 java_parse_abort_on_error ();
856 java_parse (); /* Parse and build partial tree nodes. */
857 java_parse_abort_on_error ();
860 /* Process a parsed source file, resolving names etc. */
863 parse_source_file_2 ()
865 int save_error_count
= java_error_count
;
866 java_complete_class (); /* Parse unsatisfied class decl. */
867 java_parse_abort_on_error ();
868 java_check_circular_reference (); /* Check on circular references */
869 java_parse_abort_on_error ();
870 java_fix_constructors (); /* Fix the constructors */
871 java_parse_abort_on_error ();
872 java_reorder_fields (); /* Reorder the fields */
876 predefined_filename_p (node
)
880 for (i
= 0; i
< PREDEF_FILENAMES_SIZE
; i
++)
881 if (predef_filenames
[i
] == node
)
889 int filename_count
= 0;
894 if (flag_filelist_file
)
897 finput
= fopen (input_filename
, "r");
899 fatal_io_error ("can't open %s", input_filename
);
900 list
= xmalloc(avail
);
908 avail
= 2 * (count
+ avail
);
909 list
= xrealloc (list
, avail
);
911 avail
= avail
- count
;
913 /* Subtract to to guarantee space for final '\0'. */
914 count
= fread (next
, 1, avail
- 1, finput
);
918 fatal_io_error ("error closing %s", input_filename
);
928 list
= xstrdup (input_filename
);
932 for (next
= list
; ; )
935 if (ch
== '\n' || ch
== '\r' || ch
== '\t' || ch
== ' '
936 || ch
== '&' /* FIXME */)
964 int len
= strlen (list
);
966 if (*list
!= '/' && filename_count
> 0)
967 obstack_grow (&temporary_obstack
, "./", 2);
969 obstack_grow0 (&temporary_obstack
, list
, len
);
970 value
= obstack_finish (&temporary_obstack
);
974 /* Exclude file that we see twice on the command line. For
975 all files except {Class,Error,Object,RuntimeException,String,
976 Throwable}.java we can rely on maybe_get_identifier. For
977 these files, we need to do a linear search of
978 current_file_list. This search happens only for these
979 files, presumably only when we're recompiling libgcj. */
981 if ((id
= maybe_get_identifier (value
)))
983 if (predefined_filename_p (id
))
986 for (c
= current_file_list
; c
; c
= TREE_CHAIN (c
))
987 if (TREE_VALUE (c
) == id
)
996 const char *saved_input_filename
= input_filename
;
997 input_filename
= value
;
998 warning ("source file seen twice on command line and will be compiled only once.");
999 input_filename
= saved_input_filename
;
1003 BUILD_FILENAME_IDENTIFIER_NODE (node
, value
);
1004 IS_A_COMMAND_LINE_FILENAME_P (node
) = 1;
1005 current_file_list
= tree_cons (NULL_TREE
, node
,
1013 if (filename_count
== 0)
1014 warning ("no input file specified");
1016 current_jcf
= main_jcf
;
1017 current_file_list
= nreverse (current_file_list
);
1018 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1020 tree name
= TREE_VALUE (node
);
1022 /* Skip already parsed files */
1023 if (HAS_BEEN_ALREADY_PARSED_P (name
))
1026 /* Close previous descriptor, if any */
1027 if (main_jcf
->read_state
&& fclose (main_jcf
->read_state
))
1028 fatal_io_error ("can't close %s",
1029 main_jcf
->filename
? main_jcf
->filename
: "<unknown>");
1031 /* Set jcf up and open a new file */
1032 JCF_ZERO (main_jcf
);
1033 main_jcf
->read_state
= fopen (IDENTIFIER_POINTER (name
), "rb");
1034 if (main_jcf
->read_state
== NULL
)
1035 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name
));
1037 /* Set new input_filename and finput */
1038 finput
= main_jcf
->read_state
;
1039 #ifdef IO_BUFFER_SIZE
1040 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
),
1041 _IOFBF
, IO_BUFFER_SIZE
);
1043 input_filename
= IDENTIFIER_POINTER (name
);
1044 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1046 switch (jcf_figure_file_type (current_jcf
))
1049 parse_zip_file_entries ();
1052 jcf_parse (current_jcf
);
1053 parse_class_file ();
1056 java_push_parser_context ();
1057 java_parser_context_save_global ();
1058 parse_source_file_1 (name
, finput
);
1059 java_parser_context_restore_global ();
1060 java_pop_parser_context (1);
1065 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1067 input_filename
= ctxp
->filename
;
1068 parse_source_file_2 ();
1070 input_filename
= main_input_filename
;
1072 java_expand_classes ();
1073 if (!java_report_errors () && !flag_syntax_only
)
1074 emit_register_classes ();
1078 static struct ZipFile
*localToFile
;
1080 /* Process all class entries found in the zip file. */
1082 parse_zip_file_entries (void)
1084 struct ZipDirectory
*zdir
;
1087 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1088 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1092 /* We don't need to consider those files. */
1093 if (!zdir
->size
|| !zdir
->filename_offset
)
1096 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir
)));
1097 current_jcf
= TYPE_JCF (class);
1098 current_class
= class;
1100 if ( !CLASS_LOADED_P (class))
1102 read_zip_member(current_jcf
, zdir
, localToFile
);
1103 jcf_parse (current_jcf
);
1106 if (TYPE_SIZE (current_class
) != error_mark_node
)
1108 input_filename
= current_jcf
->filename
;
1109 parse_class_file ();
1110 FREE (current_jcf
->buffer
); /* No longer necessary */
1111 /* Note: there is a way to free this buffer right after a
1112 class seen in a zip file has been parsed. The idea is the
1113 set its jcf in such a way that buffer will be reallocated
1114 the time the code for the class will be generated. FIXME. */
1119 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1120 jcf up for further processing and link it to the created class. */
1123 process_zip_dir (FILE *finput
)
1128 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1129 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1131 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1136 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1138 /* We choose to not to process entries with a zero size or entries
1139 not bearing the .class extention. */
1140 if (!zdir
->size
|| !zdir
->filename_offset
||
1141 strncmp (&class_name_in_zip_dir
[zdir
->filename_length
-6],
1144 /* So it will be skipped in parse_zip_file_entries */
1149 class_name
= ALLOC (zdir
->filename_length
+1-6);
1150 file_name
= ALLOC (zdir
->filename_length
+1);
1151 jcf
= ALLOC (sizeof (JCF
));
1154 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
-6);
1155 class_name
[zdir
->filename_length
-6] = '\0';
1156 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1157 file_name
[zdir
->filename_length
] = '\0';
1159 for (j
=0; class_name
[j
]; j
++)
1160 class_name
[j
] = (class_name
[j
] == '/' ? '.' : class_name
[j
]);
1162 /* Yes, we write back the true class name into the zip directory. */
1163 strcpy (class_name_in_zip_dir
, class_name
);
1164 zdir
->filename_length
= j
;
1165 class = lookup_class (get_identifier (class_name
));
1167 jcf
->read_state
= finput
;
1168 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1169 jcf
->java_source
= 0;
1170 jcf
->classname
= class_name
;
1171 jcf
->filename
= file_name
;
1174 TYPE_JCF (class) = jcf
;
1178 /* Figure what kind of file we're dealing with */
1180 DEFUN(jcf_figure_file_type
, (jcf
),
1183 unsigned char magic_string
[4];
1186 if (fread (magic_string
, 1, 4, jcf
->read_state
) != 4)
1187 jcf_unexpected_eof (jcf
, 4);
1189 fseek (jcf
->read_state
, 0L, SEEK_SET
);
1190 magic
= GET_u4 (magic_string
);
1192 if (magic
== 0xcafebabe)
1195 /* FIXME: is it a system file? */
1196 if (magic
== (JCF_u4
)ZIPMAGIC
1197 && !open_in_zip (jcf
, input_filename
, NULL
, 0))
1199 localToFile
= SeenZipFiles
;
1200 /* Register all the class defined there. */
1201 process_zip_dir (jcf
->read_state
);
1208 /* Initialization. */
1213 /* Register roots with the garbage collector. */
1214 ggc_add_tree_root (parse_roots
, sizeof (parse_roots
) / sizeof(tree
));
1216 ggc_add_root (¤t_jcf
, 1, sizeof (JCF
), (void (*)(void *))ggc_mark_jcf
);