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 tree give_name_to_class
PARAMS ((JCF
*jcf
, int index
));
89 static void parse_zip_file_entries
PARAMS ((void));
90 static void process_zip_dir
PARAMS ((FILE *));
91 static void parse_source_file
PARAMS ((tree
, FILE *));
92 static void jcf_parse_source
PARAMS ((void));
93 static int jcf_figure_file_type
PARAMS ((JCF
*));
94 static int find_in_current_zip
PARAMS ((const char *, struct JCF
**));
95 static void parse_class_file
PARAMS ((void));
96 static void set_source_filename
PARAMS ((JCF
*, int));
97 static int predefined_filename_p
PARAMS ((tree
));
98 static void ggc_mark_jcf
PARAMS ((void**));
100 /* Mark (for garbage collection) all the tree nodes that are
101 referenced from JCF's constant pool table. */
107 JCF
*jcf
= *(JCF
**) elt
;
110 CPool
*cpool
= &jcf
->cpool
;
111 int size
= CPOOL_COUNT(cpool
);
113 for (index
= 1; index
< size
; index
++)
115 int tag
= JPOOL_TAG (jcf
, index
);
116 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
117 ggc_mark_tree ((tree
) cpool
->data
[index
]);
122 /* Handle "SourceFile" attribute. */
125 set_source_filename (jcf
, index
)
129 tree sfname_id
= get_name_constant (jcf
, index
);
130 const char *sfname
= IDENTIFIER_POINTER (sfname_id
);
131 if (input_filename
!= NULL
)
133 int old_len
= strlen (input_filename
);
134 int new_len
= IDENTIFIER_LENGTH (sfname_id
);
135 /* Use the current input_filename (derived from the class name)
136 if it has a directory prefix, but otherwise matches sfname. */
137 if (old_len
> new_len
138 && strcmp (sfname
, input_filename
+ old_len
- new_len
) == 0
139 && (input_filename
[old_len
- new_len
- 1] == '/'
140 || input_filename
[old_len
- new_len
- 1] == '\\'))
143 input_filename
= sfname
;
144 DECL_SOURCE_FILE (TYPE_NAME (current_class
)) = sfname
;
145 if (current_class
== main_class
) main_input_filename
= input_filename
;
148 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
150 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
151 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
152 current_class = give_name_to_class (jcf, THIS); \
153 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
155 #define HANDLE_CLASS_INTERFACE(INDEX) \
156 add_interface (current_class, get_class_constant (jcf, INDEX))
158 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
159 { int sig_index = SIGNATURE; \
160 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
161 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
162 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); }
164 #define HANDLE_END_FIELDS() \
165 (current_field = NULL_TREE)
167 #define HANDLE_CONSTANTVALUE(INDEX) \
168 { tree constant; int index = INDEX; \
169 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
170 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
171 constant = build_utf8_ref (name); \
174 constant = get_constant (jcf, index); \
175 set_constant_value (current_field, constant); }
177 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
178 (current_method = add_method (current_class, ACCESS_FLAGS, \
179 get_name_constant (jcf, NAME), \
180 get_name_constant (jcf, SIGNATURE)), \
181 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
182 DECL_LINENUMBERS_OFFSET (current_method) = 0)
184 #define HANDLE_END_METHODS() \
185 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
186 if (handle_type != current_class) layout_type (handle_type); }
188 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
189 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
190 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
191 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
192 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
194 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
196 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
197 JCF_SKIP (jcf, n * 10); }
199 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
201 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
202 JCF_SKIP (jcf, n * 4); }
204 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
207 tree list = DECL_FUNCTION_THROWS (current_method); \
210 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
211 list = tree_cons (NULL_TREE, thrown_class, list); \
213 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
216 /* Link seen inner classes to their outer context and register the
217 inner class to its outer context. They will be later loaded. */
218 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
223 tree class = get_class_constant (jcf, JCF_readu2 (jcf)); \
224 tree decl = TYPE_NAME (class); \
225 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl)) \
227 tree outer = TYPE_NAME (get_class_constant (jcf, \
228 JCF_readu2 (jcf))); \
229 tree alias = get_name_constant (jcf, JCF_readu2 (jcf)); \
231 DECL_CONTEXT (decl) = outer; \
232 DECL_INNER_CLASS_LIST (outer) = \
233 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer)); \
234 CLASS_COMPLETE_P (decl) = 1; \
241 #include "jcf-reader.c"
246 parse_signature (jcf
, sig_index
)
250 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE(jcf
)
251 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
252 fatal ("invalid field/method signature");
255 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
256 JPOOL_UTF_LENGTH (jcf
, sig_index
));
263 /* Make identifier nodes long enough for the language-specific slots. */
264 set_identifier_size (sizeof (struct lang_identifier
));
275 get_constant (jcf
, index
)
281 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
283 tag
= JPOOL_TAG (jcf
, index
);
284 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
285 return (tree
) jcf
->cpool
.data
[index
];
288 case CONSTANT_Integer
:
290 jint num
= JPOOL_INT(jcf
, index
);
291 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
292 TREE_TYPE (value
) = int_type_node
;
297 jint num
= JPOOL_INT (jcf
, index
);
298 HOST_WIDE_INT lo
, hi
;
299 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
300 num
= JPOOL_INT (jcf
, index
+1) & 0xffffffff;
301 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
302 value
= build_int_2 (lo
, hi
);
303 TREE_TYPE (value
) = long_type_node
;
304 force_fit_type (value
, 0);
307 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
310 jint num
= JPOOL_INT(jcf
, index
);
312 #ifdef REAL_ARITHMETIC
313 d
= REAL_VALUE_FROM_TARGET_SINGLE (num
);
315 union { float f
; jint i
; } u
;
319 value
= build_real (float_type_node
, d
);
322 case CONSTANT_Double
:
324 HOST_WIDE_INT num
[2];
326 HOST_WIDE_INT lo
, hi
;
327 num
[0] = JPOOL_INT (jcf
, index
);
328 lshift_double (num
[0], 0, 32, 64, &lo
, &hi
, 0);
329 num
[0] = JPOOL_INT (jcf
, index
+1);
330 add_double (lo
, hi
, num
[0], 0, &lo
, &hi
);
331 if (FLOAT_WORDS_BIG_ENDIAN
)
341 #ifdef REAL_ARITHMETIC
342 d
= REAL_VALUE_FROM_TARGET_DOUBLE (num
);
345 union { double d
; jint i
[2]; } u
;
346 u
.i
[0] = (jint
) num
[0];
347 u
.i
[1] = (jint
) num
[1];
351 value
= build_real (double_type_node
, d
);
354 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
355 case CONSTANT_String
:
357 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
358 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
359 int utf8_len
= IDENTIFIER_LENGTH (name
);
360 unsigned char *str_ptr
;
362 const unsigned char *utf8
;
365 /* Count the number of Unicode characters in the string,
366 while checking for a malformed Utf8 string. */
367 utf8
= (const unsigned char *) utf8_ptr
;
372 int char_len
= UT8_CHAR_LENGTH (*utf8
);
373 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
374 fatal ("bad string constant");
380 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
381 into the new space. */
382 str_ptr
= (unsigned char *) alloca (2 * str_len
);
384 utf8
= (const unsigned char *)utf8_ptr
;
386 for (i
= 0; i
< str_len
; i
++)
389 int char_len
= UT8_CHAR_LENGTH (*utf8
);
393 char_value
= *utf8
++;
396 char_value
= *utf8
++ & 0x1F;
397 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
400 char_value
= *utf8
++ & 0x0F;
401 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
402 char_value
= (char_value
<< 6) | (*utf8
++ & 0x3F);
407 if (BYTES_BIG_ENDIAN
)
409 *str
++ = char_value
>> 8;
410 *str
++ = char_value
& 0xFF;
414 *str
++ = char_value
& 0xFF;
415 *str
++ = char_value
>> 8;
418 value
= build_string (str
- str_ptr
, str_ptr
);
419 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
425 JPOOL_TAG(jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
426 jcf
->cpool
.data
[index
] = (jword
) value
;
429 fatal ("bad value constant type %d, index %d",
430 JPOOL_TAG( jcf
, index
), index
);
434 get_name_constant (jcf
, index
)
438 tree name
= get_constant (jcf
, index
);
439 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
440 fatal ("bad nameandtype index %d", index
);
445 give_name_to_class (jcf
, i
)
449 if (i
<= 0 || i
>= JPOOL_SIZE(jcf
)
450 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
451 fatal ("bad class index %d", i
);
455 int j
= JPOOL_USHORT1 (jcf
, i
);
456 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
457 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
458 JPOOL_UTF_LENGTH (jcf
, j
));
459 this_class
= lookup_class (class_name
);
460 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
462 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
463 main_input_filename
= input_filename
;
465 jcf
->cpool
.data
[i
] = (jword
) this_class
;
466 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
471 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
474 get_class_constant (JCF
*jcf
, int i
)
477 if (i
<= 0 || i
>= JPOOL_SIZE(jcf
)
478 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
479 fatal ("bad class index %d", i
);
481 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
483 int name_index
= JPOOL_USHORT1 (jcf
, i
);
484 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
485 const char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
486 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
487 if (name
[0] == '[') /* Handle array "classes". */
488 type
= TREE_TYPE (parse_signature_string (name
, nlength
));
491 tree cname
= unmangle_classname (name
, nlength
);
492 type
= lookup_class (cname
);
494 jcf
->cpool
.data
[i
] = (jword
) type
;
495 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
498 type
= (tree
) jcf
->cpool
.data
[i
];
502 /* Read a class with the fully qualified-name NAME.
503 Return 1 iff we read the requested file.
504 (It is still possible we failed if the file did not
505 define the class it is supposed to.) */
512 tree save_current_class
= current_class
;
513 const char *save_input_filename
= input_filename
;
514 JCF
*save_current_jcf
= current_jcf
;
516 if (current_jcf
->read_state
)
517 saved_pos
= ftell (current_jcf
->read_state
);
519 /* Search in current zip first. */
520 if (find_in_current_zip (IDENTIFIER_POINTER (name
), &jcf
) == 0)
522 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
527 this_jcf
.seen_in_zip
= 0;
528 current_jcf
= &this_jcf
;
534 if (current_jcf
->java_source
)
537 java_parser_context_save_global ();
538 java_push_parser_context ();
539 input_filename
= current_jcf
->filename
;
540 jcf_parse (current_jcf
);
541 java_pop_parser_context (0);
542 java_parser_context_restore_global ();
545 if (!current_jcf
->seen_in_zip
)
546 JCF_FINISH (current_jcf
);
548 current_class
= save_current_class
;
549 input_filename
= save_input_filename
;
550 current_jcf
= save_current_jcf
;
551 if (current_jcf
->read_state
)
552 fseek (current_jcf
->read_state
, saved_pos
, SEEK_SET
);
556 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
557 called from the parser, otherwise it's a RECORD_TYPE node. If
558 VERBOSE is 1, print error message on failure to load a class. */
560 /* Replace calls to load_class by having callers call read_class directly
561 - and then perhaps rename read_class to load_class. FIXME */
564 load_class (class_or_name
, verbose
)
570 /* class_or_name can be the name of the class we want to load */
571 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
572 name
= class_or_name
;
573 /* In some cases, it's a dependency that we process earlier that
575 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
576 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
577 /* Or it's a type in the making */
579 name
= DECL_NAME (TYPE_NAME (class_or_name
));
581 if (read_class (name
) == 0 && verbose
)
582 fatal ("Cannot find file for class %s.", IDENTIFIER_POINTER (name
));
585 /* Parse a source file when JCF refers to a source file. */
593 java_parser_context_save_global ();
594 java_push_parser_context ();
595 BUILD_FILENAME_IDENTIFIER_NODE (file
, current_jcf
->filename
);
596 if (wfl_operator
== NULL_TREE
)
597 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
598 EXPR_WFL_FILENAME_NODE (wfl_operator
) = file
;
599 input_filename
= ggc_strdup (current_jcf
->filename
);
600 current_class
= NULL_TREE
;
601 current_function_decl
= NULL_TREE
;
602 if (!HAS_BEEN_ALREADY_PARSED_P (file
))
604 if (!(finput
= fopen (input_filename
, "r")))
605 fatal ("input file `%s' just disappeared - jcf_parse_source",
607 parse_source_file (file
, finput
);
609 fatal ("can't close input file `%s' stream - jcf_parse_source",
612 java_pop_parser_context (IS_A_COMMAND_LINE_FILENAME_P (file
));
613 java_parser_context_restore_global ();
616 /* Parse the .class file JCF. */
625 if (jcf_parse_preamble (jcf
) != 0)
626 fatal ("Not a valid Java .class file.\n");
627 code
= jcf_parse_constant_pool (jcf
);
629 fatal ("error while parsing constant pool");
630 code
= verify_constant_pool (jcf
);
632 fatal ("error in constant pool entry #%d\n", code
);
634 jcf_parse_class (jcf
);
635 if (main_class
== NULL_TREE
)
636 main_class
= current_class
;
637 if (! quiet_flag
&& TYPE_NAME (current_class
))
638 fprintf (stderr
, " %s %s",
639 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
640 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
641 if (CLASS_LOADED_P (current_class
))
643 CLASS_LOADED_P (current_class
) = 1;
645 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
647 switch (JPOOL_TAG (jcf
, i
))
650 get_class_constant (jcf
, i
);
655 code
= jcf_parse_fields (jcf
);
657 fatal ("error while parsing fields");
658 code
= jcf_parse_methods (jcf
);
660 fatal ("error while parsing methods");
661 code
= jcf_parse_final_attributes (jcf
);
663 fatal ("error while parsing final attributes");
665 /* The fields of class_type_node are already in correct order. */
666 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
667 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
669 layout_class (current_class
);
670 if (current_class
== object_type_node
)
671 layout_class_methods (object_type_node
);
673 all_class_list
= tree_cons (NULL_TREE
,
674 TYPE_NAME (current_class
), all_class_list
);
676 /* And if we came accross inner classes, load them now. */
677 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (current_class
)); current
;
678 current
= TREE_CHAIN (current
))
679 load_class (DECL_NAME (TREE_PURPOSE (current
)), 1);
683 init_outgoing_cpool ()
685 current_constant_pool_data_ref
= NULL_TREE
;
686 outgoing_cpool
= (struct CPool
*)xmalloc (sizeof (struct CPool
));
687 memset (outgoing_cpool
, 0, sizeof (struct CPool
));
694 const char *save_input_filename
= input_filename
;
695 int save_lineno
= lineno
;
697 java_layout_seen_class_methods ();
699 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
701 debug_start_source_file (input_filename
);
702 init_outgoing_cpool ();
704 /* Currently we always have to emit calls to _Jv_InitClass when
705 compiling from class files. */
706 always_initialize_class_p
= 1;
708 for ( method
= TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class
));
709 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
711 JCF
*jcf
= current_jcf
;
713 if (METHOD_ABSTRACT (method
))
716 if (METHOD_NATIVE (method
))
720 DECL_MAX_LOCALS (method
)
721 = list_length (TYPE_ARG_TYPES (TREE_TYPE (method
)));
722 start_java_method (method
);
723 give_name_to_locals (jcf
);
724 expand_expr_stmt (build_jni_stub (method
));
729 if (DECL_CODE_OFFSET (method
) == 0)
731 error ("missing Code attribute");
736 if (DECL_LINENUMBERS_OFFSET (method
))
739 register unsigned char *ptr
;
740 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
741 linenumber_count
= i
= JCF_readu2 (jcf
);
742 linenumber_table
= ptr
= jcf
->read_ptr
;
744 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
746 int line
= GET_u2 (ptr
);
747 /* Set initial lineno lineno to smallest linenumber.
748 * Needs to be set before init_function_start. */
749 if (lineno
== 0 || line
< lineno
)
755 linenumber_table
= NULL
;
756 linenumber_count
= 0;
759 start_java_method (method
);
761 note_instructions (jcf
, method
);
763 give_name_to_locals (jcf
);
765 /* Actually generate code. */
766 expand_byte_code (jcf
, method
);
771 if (flag_emit_class_files
)
772 write_classfile (current_class
);
776 debug_end_source_file (save_lineno
);
777 input_filename
= save_input_filename
;
778 lineno
= save_lineno
;
781 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
784 parse_source_file (file
, finput
)
788 int save_error_count
= java_error_count
;
789 /* Mark the file as parsed */
790 HAS_BEEN_ALREADY_PARSED_P (file
) = 1;
792 jcf_dependency_add_file (input_filename
, 0);
794 lang_init_source (1); /* Error msgs have no method prototypes */
796 /* There's no point in trying to find the current encoding unless we
797 are going to do something intelligent with it -- hence the test
800 #ifdef HAVE_NL_LANGINFO
801 setlocale (LC_CTYPE
, "");
802 if (current_encoding
== NULL
)
803 current_encoding
= nl_langinfo (CODESET
);
804 #endif /* HAVE_NL_LANGINFO */
805 #endif /* HAVE_ICONV */
806 if (current_encoding
== NULL
|| *current_encoding
== '\0')
807 current_encoding
= DEFAULT_ENCODING
;
809 /* Initialize the parser */
810 java_init_lex (finput
, current_encoding
);
811 java_parse_abort_on_error ();
813 java_parse (); /* Parse and build partial tree nodes. */
814 java_parse_abort_on_error ();
815 java_complete_class (); /* Parse unsatisfied class decl. */
816 java_parse_abort_on_error ();
817 java_check_circular_reference (); /* Check on circular references */
818 java_parse_abort_on_error ();
819 java_fix_constructors (); /* Fix the constructors */
820 java_parse_abort_on_error ();
821 java_reorder_fields (); /* Reorder the fields */
825 predefined_filename_p (node
)
829 for (i
= 0; i
< PREDEF_FILENAMES_SIZE
; i
++)
830 if (predef_filenames
[i
] == node
)
838 int several_files
= 0;
839 char *list
= xstrdup (input_filename
), *next
;
845 next
= strchr (list
, '&');
858 int len
= strlen (list
);
860 if (*list
!= '/' && several_files
)
861 obstack_grow (&temporary_obstack
, "./", 2);
863 obstack_grow0 (&temporary_obstack
, list
, len
);
864 value
= obstack_finish (&temporary_obstack
);
866 /* Exclude file that we see twice on the command line. For
867 all files except {Class,Error,Object,RuntimeException,String,
868 Throwable}.java we can rely on maybe_get_identifier. For
869 these files, we need to do a linear search of
870 current_file_list. This search happens only for these
871 files, presumably only when we're recompiling libgcj. */
873 if ((id
= maybe_get_identifier (value
)))
875 if (predefined_filename_p (id
))
878 for (c
= current_file_list
; c
; c
= TREE_CHAIN (c
))
879 if (TREE_VALUE (c
) == id
)
888 const char *saved_input_filename
= input_filename
;
889 input_filename
= value
;
890 warning ("source file seen twice on command line and will be compiled only once.");
891 input_filename
= saved_input_filename
;
895 BUILD_FILENAME_IDENTIFIER_NODE (node
, value
);
896 IS_A_COMMAND_LINE_FILENAME_P (node
) = 1;
897 current_file_list
= tree_cons (NULL_TREE
, node
,
905 current_jcf
= main_jcf
;
906 current_file_list
= nreverse (current_file_list
);
907 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
909 tree name
= TREE_VALUE (node
);
911 /* Skip already parsed files */
912 if (HAS_BEEN_ALREADY_PARSED_P (name
))
915 /* Close previous descriptor, if any */
916 if (main_jcf
->read_state
&& fclose (main_jcf
->read_state
))
917 fatal ("failed to close input file `%s' - yyparse",
918 (main_jcf
->filename
? main_jcf
->filename
: "<unknown>"));
920 /* Set jcf up and open a new file */
922 main_jcf
->read_state
= fopen (IDENTIFIER_POINTER (name
), "rb");
923 if (main_jcf
->read_state
== NULL
)
924 pfatal_with_name (IDENTIFIER_POINTER (name
));
926 /* Set new input_filename and finput */
927 finput
= main_jcf
->read_state
;
928 #ifdef IO_BUFFER_SIZE
929 setvbuf (finput
, (char *) xmalloc (IO_BUFFER_SIZE
),
930 _IOFBF
, IO_BUFFER_SIZE
);
932 input_filename
= IDENTIFIER_POINTER (name
);
933 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
935 switch (jcf_figure_file_type (current_jcf
))
938 parse_zip_file_entries ();
941 jcf_parse (current_jcf
);
945 java_push_parser_context ();
946 java_parser_context_save_global ();
947 parse_source_file (name
, finput
);
948 java_parser_context_restore_global ();
949 java_pop_parser_context (1);
954 java_expand_classes ();
955 if (!java_report_errors () && !flag_syntax_only
)
956 emit_register_classes ();
960 static struct ZipFileCache
*localToFile
;
962 /* Process all class entries found in the zip file. */
964 parse_zip_file_entries (void)
966 struct ZipDirectory
*zdir
;
969 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->z
.central_directory
;
970 i
< localToFile
->z
.count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
974 /* We don't need to consider those files. */
975 if (!zdir
->size
|| !zdir
->filename_offset
)
978 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir
)));
979 current_jcf
= TYPE_JCF (class);
980 current_class
= class;
982 if ( !CLASS_LOADED_P (class))
984 fseek (current_jcf
->read_state
, current_jcf
->zip_offset
, SEEK_SET
);
985 jcf_parse (current_jcf
);
988 if (TYPE_SIZE (current_class
) != error_mark_node
)
990 input_filename
= current_jcf
->filename
;
992 FREE (current_jcf
->buffer
); /* No longer necessary */
993 /* Note: there is a way to free this buffer right after a
994 class seen in a zip file has been parsed. The idea is the
995 set its jcf in such a way that buffer will be reallocated
996 the time the code for the class will be generated. FIXME. */
1001 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1002 jcf up for further processing and link it to the created class. */
1005 process_zip_dir (FILE *finput
)
1010 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->z
.central_directory
;
1011 i
< localToFile
->z
.count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1013 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1018 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1020 /* We choose to not to process entries with a zero size or entries
1021 not bearing the .class extention. */
1022 if (!zdir
->size
|| !zdir
->filename_offset
||
1023 strncmp (&class_name_in_zip_dir
[zdir
->filename_length
-6],
1026 /* So it will be skipped in parse_zip_file_entries */
1031 class_name
= ALLOC (zdir
->filename_length
+1-6);
1032 file_name
= ALLOC (zdir
->filename_length
+1);
1033 jcf
= ALLOC (sizeof (JCF
));
1036 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
-6);
1037 class_name
[zdir
->filename_length
-6] = '\0';
1038 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1039 file_name
[zdir
->filename_length
] = '\0';
1041 for (j
=0; class_name
[j
]; j
++)
1042 class_name
[j
] = (class_name
[j
] == '/' ? '.' : class_name
[j
]);
1044 /* Yes, we write back the true class name into the zip directory. */
1045 strcpy (class_name_in_zip_dir
, class_name
);
1046 zdir
->filename_length
= j
;
1047 class = lookup_class (get_identifier (class_name
));
1049 jcf
->read_state
= finput
;
1050 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1051 jcf
->seen_in_zip
= 1;
1052 jcf
->java_source
= 0;
1053 jcf
->zip_offset
= zdir
->filestart
;
1054 jcf
->classname
= class_name
;
1055 jcf
->filename
= file_name
;
1057 TYPE_JCF (class) = jcf
;
1061 /* Lookup class NAME and figure whether is a class already found in the current
1064 DEFUN(find_in_current_zip
, (name
, length
, jcf
),
1065 const char *name AND JCF
**jcf
)
1068 tree class_name
= maybe_get_identifier (name
), class, icv
;
1073 if (!(icv
= IDENTIFIER_CLASS_VALUE (class_name
)))
1076 class = TREE_TYPE (icv
);
1078 /* Doesn't have jcf specific info ? It's not ours */
1079 if (!TYPE_JCF (class))
1082 *jcf
= local_jcf
= TYPE_JCF (class);
1083 fseek (local_jcf
->read_state
, local_jcf
->zip_offset
, SEEK_SET
);
1087 /* Figure what kind of file we're dealing with */
1089 DEFUN(jcf_figure_file_type
, (jcf
),
1092 unsigned char magic_string
[4];
1095 if (fread (magic_string
, 1, 4, jcf
->read_state
) != 4)
1096 jcf_unexpected_eof (jcf
, 4);
1098 fseek (jcf
->read_state
, 0L, SEEK_SET
);
1099 magic
= GET_u4 (magic_string
);
1101 if (magic
== 0xcafebabe)
1104 /* FIXME: is it a system file? */
1105 if (magic
== (JCF_u4
)ZIPMAGIC
1106 && !open_in_zip (jcf
, input_filename
, NULL
, 0))
1108 localToFile
= ALLOC (sizeof (struct ZipFileCache
));
1109 memcpy (localToFile
, SeenZipFiles
, sizeof (struct ZipFileCache
));
1110 /* Register all the class defined there. */
1111 process_zip_dir (jcf
->read_state
);
1118 /* Initialization. */
1123 /* Register roots with the garbage collector. */
1124 ggc_add_tree_root (parse_roots
, sizeof (parse_roots
) / sizeof(tree
));
1126 ggc_add_root (¤t_jcf
, 1, sizeof (JCF
), ggc_mark_jcf
);