1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003, 2004
3 Free Software Foundation, Inc.
5 This file is part of GCC.
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA.
22 Java and all Java-based marks are trademarks or registered trademarks
23 of Sun Microsystems, Inc. in the United States and other countries.
24 The Free Software Foundation is independent of Sun Microsystems, Inc. */
26 /* Written by Per Bothner <bothner@cygnus.com> */
30 #include "coretypes.h"
36 #include "java-except.h"
38 #include "java-tree.h"
51 #ifdef HAVE_LANGINFO_CODESET
55 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
56 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
57 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
58 #define JPOOL_UTF_DATA(JCF, INDEX) \
59 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
60 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
62 unsigned char save; unsigned char *text; \
63 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
64 text = (JCF)->read_ptr; \
65 save = text[LENGTH]; \
67 (JCF)->cpool.data[INDEX].t = get_identifier ((const char *) text); \
68 text[LENGTH] = save; \
69 JCF_SKIP (JCF, LENGTH); } while (0)
73 extern struct obstack temporary_obstack
;
75 static GTY(()) tree parse_roots
[3];
77 /* The FIELD_DECL for the current field. */
78 #define current_field parse_roots[0]
80 /* The METHOD_DECL for the current method. */
81 #define current_method parse_roots[1]
83 /* A list of file names. */
84 #define current_file_list parse_roots[2]
86 /* The Java archive that provides main_class; the main input file. */
87 static GTY(()) struct JCF
* main_jcf
;
89 static struct ZipFile
*localToFile
;
91 /* Declarations of some functions used here. */
92 static void handle_innerclass_attribute (int count
, JCF
*);
93 static tree
give_name_to_class (JCF
*jcf
, int index
);
94 static char *compute_class_name (struct ZipDirectory
*zdir
);
95 static int classify_zip_file (struct ZipDirectory
*zdir
);
96 static void parse_zip_file_entries (void);
97 static void process_zip_dir (FILE *);
98 static void parse_source_file_1 (tree
, FILE *);
99 static void parse_source_file_2 (void);
100 static void parse_source_file_3 (void);
101 static void parse_class_file (void);
102 static void handle_deprecated (void);
103 static void set_source_filename (JCF
*, int);
104 static void jcf_parse (struct JCF
*);
105 static void load_inner_classes (tree
);
107 /* Handle "Deprecated" attribute. */
109 handle_deprecated (void)
111 if (current_field
!= NULL_TREE
)
112 FIELD_DEPRECATED (current_field
) = 1;
113 else if (current_method
!= NULL_TREE
)
114 METHOD_DEPRECATED (current_method
) = 1;
115 else if (current_class
!= NULL_TREE
)
116 CLASS_DEPRECATED (TYPE_NAME (current_class
)) = 1;
119 /* Shouldn't happen. */
124 /* Handle "SourceFile" attribute. */
127 set_source_filename (JCF
*jcf
, int 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 output_class = 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)); \
163 if ((ACCESS_FLAGS) & ACC_FINAL) \
164 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
167 #define HANDLE_END_FIELDS() \
168 (current_field = NULL_TREE)
170 #define HANDLE_CONSTANTVALUE(INDEX) \
171 { tree constant; int index = INDEX; \
172 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
173 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
174 constant = build_utf8_ref (name); \
177 constant = get_constant (jcf, index); \
178 set_constant_value (current_field, constant); }
180 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
181 (current_method = add_method (current_class, ACCESS_FLAGS, \
182 get_name_constant (jcf, NAME), \
183 get_name_constant (jcf, SIGNATURE)), \
184 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
185 DECL_LINENUMBERS_OFFSET (current_method) = 0)
187 #define HANDLE_END_METHODS() \
188 { current_method = NULL_TREE; }
190 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
191 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
192 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
193 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
194 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
196 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
198 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
199 JCF_SKIP (jcf, n * 10); }
201 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
203 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
204 JCF_SKIP (jcf, n * 4); }
206 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
209 tree list = DECL_FUNCTION_THROWS (current_method); \
212 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
213 list = tree_cons (NULL_TREE, thrown_class, list); \
215 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
218 #define HANDLE_DEPRECATED_ATTRIBUTE() handle_deprecated ()
220 /* Link seen inner classes to their outer context and register the
221 inner class to its outer context. They will be later loaded. */
222 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
223 handle_innerclass_attribute (COUNT, jcf)
225 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
227 /* Irrelevant decls should have been nullified by the END macros. \
228 We only handle the `Synthetic' attribute on method DECLs. \
229 DECL_ARTIFICIAL on fields is used for something else (See \
230 PUSH_FIELD in java-tree.h) */ \
231 if (current_method) \
232 DECL_ARTIFICIAL (current_method) = 1; \
235 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
237 if (current_class == object_type_node) \
238 jcf->right_zip = 1; \
241 #include "jcf-reader.c"
244 parse_signature (JCF
*jcf
, int sig_index
)
246 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE (jcf
)
247 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
250 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
251 JPOOL_UTF_LENGTH (jcf
, sig_index
));
255 get_constant (JCF
*jcf
, int index
)
259 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
261 tag
= JPOOL_TAG (jcf
, index
);
262 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
263 return jcf
->cpool
.data
[index
].t
;
266 case CONSTANT_Integer
:
268 jint num
= JPOOL_INT(jcf
, index
);
269 value
= build_int_cst (int_type_node
, num
);
274 unsigned HOST_WIDE_INT num
= JPOOL_UINT (jcf
, index
);
275 unsigned HOST_WIDE_INT lo
;
278 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
279 num
= JPOOL_UINT (jcf
, index
+1);
280 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
281 value
= build_int_cst_wide (long_type_node
, lo
, hi
);
282 value
= force_fit_type (value
, 0, false, false);
288 jint num
= JPOOL_INT(jcf
, index
);
292 real_from_target_fmt (&d
, &buf
, &ieee_single_format
);
293 value
= build_real (float_type_node
, d
);
297 case CONSTANT_Double
:
302 hi
= JPOOL_UINT (jcf
, index
);
303 lo
= JPOOL_UINT (jcf
, index
+1);
305 if (FLOAT_WORDS_BIG_ENDIAN
)
306 buf
[0] = hi
, buf
[1] = lo
;
308 buf
[0] = lo
, buf
[1] = hi
;
310 real_from_target_fmt (&d
, buf
, &ieee_double_format
);
311 value
= build_real (double_type_node
, d
);
315 case CONSTANT_String
:
317 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
318 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
319 int utf8_len
= IDENTIFIER_LENGTH (name
);
320 const unsigned char *utf8
;
323 /* Check for a malformed Utf8 string. */
324 utf8
= (const unsigned char *) utf8_ptr
;
328 int char_len
= UT8_CHAR_LENGTH (*utf8
);
329 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
330 fatal_error ("bad string constant");
336 /* Allocate a new string value. */
337 value
= build_string (utf8_len
, utf8_ptr
);
338 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
344 JPOOL_TAG (jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
345 jcf
->cpool
.data
[index
].t
= value
;
348 internal_error ("bad value constant type %d, index %d",
349 JPOOL_TAG (jcf
, index
), index
);
353 get_name_constant (JCF
*jcf
, int index
)
355 tree name
= get_constant (jcf
, index
);
357 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
363 /* Handle reading innerclass attributes. If a nonzero entry (denoting
364 a non anonymous entry) is found, We augment the inner class list of
365 the outer context with the newly resolved innerclass. */
368 handle_innerclass_attribute (int count
, JCF
*jcf
)
373 /* Read inner_class_info_index. This may be 0 */
374 int icii
= JCF_readu2 (jcf
);
375 /* Read outer_class_info_index. If the innerclasses attribute
376 entry isn't a member (like an inner class) the value is 0. */
377 int ocii
= JCF_readu2 (jcf
);
378 /* Read inner_name_index. If the class we're dealing with is
379 an anonymous class, it must be 0. */
380 int ini
= JCF_readu2 (jcf
);
381 /* Read the access flag. */
382 int acc
= JCF_readu2 (jcf
);
383 /* If icii is 0, don't try to read the class. */
386 tree
class = get_class_constant (jcf
, icii
);
387 tree decl
= TYPE_NAME (class);
388 /* Skip reading further if ocii is null */
389 if (DECL_P (decl
) && !CLASS_COMPLETE_P (decl
) && ocii
)
391 tree outer
= TYPE_NAME (get_class_constant (jcf
, ocii
));
392 tree alias
= (ini
? get_name_constant (jcf
, ini
) : NULL_TREE
);
393 set_class_decl_access_flags (acc
, decl
);
394 DECL_CONTEXT (decl
) = outer
;
395 DECL_INNER_CLASS_LIST (outer
) =
396 tree_cons (decl
, alias
, DECL_INNER_CLASS_LIST (outer
));
397 CLASS_COMPLETE_P (decl
) = 1;
404 give_name_to_class (JCF
*jcf
, int i
)
406 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
407 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
412 int j
= JPOOL_USHORT1 (jcf
, i
);
413 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
414 tree class_name
= unmangle_classname ((const char *) JPOOL_UTF_DATA (jcf
, j
),
415 JPOOL_UTF_LENGTH (jcf
, j
));
416 this_class
= lookup_class (class_name
);
417 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
419 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
420 main_input_filename
= input_filename
;
422 jcf
->cpool
.data
[i
].t
= this_class
;
423 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
428 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
431 get_class_constant (JCF
*jcf
, int i
)
434 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
435 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
438 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
440 int name_index
= JPOOL_USHORT1 (jcf
, i
);
441 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
442 const char *name
= (const char *) JPOOL_UTF_DATA (jcf
, name_index
);
443 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
445 if (name
[0] == '[') /* Handle array "classes". */
446 type
= TREE_TYPE (parse_signature_string ((const unsigned char *) name
, nlength
));
449 tree cname
= unmangle_classname (name
, nlength
);
450 type
= lookup_class (cname
);
452 jcf
->cpool
.data
[i
].t
= type
;
453 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
456 type
= jcf
->cpool
.data
[i
].t
;
460 /* Read a class with the fully qualified-name NAME.
461 Return 1 iff we read the requested file.
462 (It is still possible we failed if the file did not
463 define the class it is supposed to.) */
466 read_class (tree name
)
469 tree icv
, class = NULL_TREE
;
470 tree save_current_class
= current_class
;
471 tree save_output_class
= output_class
;
472 location_t save_location
= input_location
;
473 JCF
*save_current_jcf
= current_jcf
;
475 if ((icv
= IDENTIFIER_CLASS_VALUE (name
)) != NULL_TREE
)
477 class = TREE_TYPE (icv
);
478 jcf
= TYPE_JCF (class);
485 this_jcf
.zipd
= NULL
;
487 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
494 if (current_jcf
->java_source
)
496 const char *filename
= current_jcf
->filename
;
497 tree given_file
, real_file
;
501 java_parser_context_save_global ();
502 java_push_parser_context ();
504 given_file
= get_identifier (filename
);
505 real_file
= get_identifier (lrealpath (filename
));
507 generate
= IS_A_COMMAND_LINE_FILENAME_P (given_file
);
508 if (wfl_operator
== NULL_TREE
)
509 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
510 EXPR_WFL_FILENAME_NODE (wfl_operator
) = given_file
;
511 input_filename
= ggc_strdup (filename
);
512 output_class
= current_class
= NULL_TREE
;
513 current_function_decl
= NULL_TREE
;
515 if (! HAS_BEEN_ALREADY_PARSED_P (real_file
))
517 if (! (finput
= fopen (input_filename
, "r")))
518 fatal_error ("can't reopen %s: %m", input_filename
);
520 parse_source_file_1 (real_file
, finput
);
521 parse_source_file_2 ();
522 parse_source_file_3 ();
525 fatal_error ("can't close %s: %m", input_filename
);
527 JCF_FINISH (current_jcf
);
528 java_pop_parser_context (generate
);
529 java_parser_context_restore_global ();
533 if (class == NULL_TREE
|| ! CLASS_PARSED_P (class))
535 java_parser_context_save_global ();
536 java_push_parser_context ();
537 output_class
= current_class
= class;
538 input_filename
= current_jcf
->filename
;
539 if (JCF_SEEN_IN_ZIP (current_jcf
))
540 read_zip_member(current_jcf
,
541 current_jcf
->zipd
, current_jcf
->zipd
->zipf
);
542 jcf_parse (current_jcf
);
543 /* Parsing might change the class, in which case we have to
544 put it back where we found it. */
545 if (current_class
!= class && icv
!= NULL_TREE
)
546 TREE_TYPE (icv
) = current_class
;
547 class = current_class
;
548 java_pop_parser_context (0);
549 java_parser_context_restore_global ();
551 layout_class (class);
552 load_inner_classes (class);
555 output_class
= save_output_class
;
556 current_class
= save_current_class
;
557 input_location
= save_location
;
558 current_jcf
= save_current_jcf
;
562 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
563 called from the parser, otherwise it's a RECORD_TYPE node. If
564 VERBOSE is 1, print error message on failure to load a class. */
566 load_class (tree class_or_name
, int verbose
)
572 /* class_or_name can be the name of the class we want to load */
573 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
574 name
= class_or_name
;
575 /* In some cases, it's a dependency that we process earlier that
577 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
578 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
579 /* Or it's a type in the making */
581 name
= DECL_NAME (TYPE_NAME (class_or_name
));
583 /* If the class is from source code, then it must already be loaded. */
584 class_decl
= IDENTIFIER_CLASS_VALUE (name
);
585 if (class_decl
&& CLASS_FROM_SOURCE_P (TREE_TYPE (class_decl
)))
593 if ((class_loaded
= read_class (name
)))
596 /* We failed loading name. Now consider that we might be looking
597 for a inner class. */
598 if ((separator
= strrchr (IDENTIFIER_POINTER (name
), '$'))
599 || (separator
= strrchr (IDENTIFIER_POINTER (name
), '.')))
603 name
= get_identifier (IDENTIFIER_POINTER (name
));
606 /* Otherwise, we failed, we bail. */
611 if (!class_loaded
&& verbose
)
612 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved
));
615 /* Parse the .class file JCF. */
622 if (jcf_parse_preamble (jcf
) != 0)
623 fatal_error ("not a valid Java .class file");
624 code
= jcf_parse_constant_pool (jcf
);
626 fatal_error ("error while parsing constant pool");
627 code
= verify_constant_pool (jcf
);
629 fatal_error ("error in constant pool entry #%d\n", code
);
631 jcf_parse_class (jcf
);
632 if (main_class
== NULL_TREE
)
633 main_class
= current_class
;
634 if (! quiet_flag
&& TYPE_NAME (current_class
))
635 fprintf (stderr
, " %s %s",
636 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
637 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
638 if (CLASS_PARSED_P (current_class
))
640 /* FIXME - where was first time */
641 fatal_error ("reading class %s for the second time from %s",
642 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))),
645 CLASS_PARSED_P (current_class
) = 1;
647 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
649 switch (JPOOL_TAG (jcf
, i
))
652 get_class_constant (jcf
, i
);
657 code
= jcf_parse_fields (jcf
);
659 fatal_error ("error while parsing fields");
660 code
= jcf_parse_methods (jcf
);
662 fatal_error ("error while parsing methods");
663 code
= jcf_parse_final_attributes (jcf
);
665 fatal_error ("error while parsing final attributes");
667 /* The fields of class_type_node are already in correct order. */
668 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
669 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
671 if (current_class
== object_type_node
)
673 layout_class_methods (object_type_node
);
674 /* If we don't have the right archive, emit a verbose warning.
675 If we're generating bytecode, emit the warning only if
676 -fforce-classes-archive-check was specified. */
678 && (!flag_emit_class_files
|| flag_force_classes_archive_check
))
679 fatal_error ("the `java.lang.Object' that was found in `%s' didn't have the special zero-length `gnu.gcj.gcj-compiled' attribute. This generally means that your classpath is incorrectly set. Use `info gcj \"Input Options\"' to see the info page describing how to set the classpath", jcf
->filename
);
682 all_class_list
= tree_cons (NULL_TREE
,
683 TYPE_NAME (current_class
), all_class_list
);
686 /* If we came across inner classes, load them now. */
688 load_inner_classes (tree cur_class
)
691 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class
)); current
;
692 current
= TREE_CHAIN (current
))
694 tree name
= DECL_NAME (TREE_PURPOSE (current
));
695 tree decl
= IDENTIFIER_GLOBAL_VALUE (name
);
696 if (decl
&& ! CLASS_LOADED_P (TREE_TYPE (decl
))
697 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl
)))
698 load_class (name
, 1);
703 parse_class_file (void)
706 location_t save_location
= input_location
;
708 java_layout_seen_class_methods ();
710 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
712 (*debug_hooks
->start_source_file
) (input_line
, input_filename
);
714 /* Currently we always have to emit calls to _Jv_InitClass when
715 compiling from class files. */
716 always_initialize_class_p
= 1;
718 gen_indirect_dispatch_tables (current_class
);
720 java_mark_class_local (current_class
);
722 for (method
= TYPE_METHODS (current_class
);
723 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
725 JCF
*jcf
= current_jcf
;
727 if (METHOD_ABSTRACT (method
))
730 if (METHOD_NATIVE (method
))
737 /* We need to compute the DECL_MAX_LOCALS. We need to take
738 the wide types into account too. */
739 for (arg
= TYPE_ARG_TYPES (TREE_TYPE (method
)), decl_max_locals
= 0;
740 arg
!= end_params_node
;
741 arg
= TREE_CHAIN (arg
), decl_max_locals
+= 1)
743 if (TREE_VALUE (arg
) && TYPE_IS_WIDE (TREE_VALUE (arg
)))
744 decl_max_locals
+= 1;
746 DECL_MAX_LOCALS (method
) = decl_max_locals
;
747 start_java_method (method
);
748 give_name_to_locals (jcf
);
749 *get_stmts () = build_jni_stub (method
);
754 if (DECL_CODE_OFFSET (method
) == 0)
756 current_function_decl
= method
;
757 error ("missing Code attribute");
762 if (DECL_LINENUMBERS_OFFSET (method
))
766 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
767 linenumber_count
= i
= JCF_readu2 (jcf
);
768 linenumber_table
= ptr
= jcf
->read_ptr
;
770 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
772 int line
= GET_u2 (ptr
);
773 /* Set initial input_line to smallest linenumber.
774 * Needs to be set before init_function_start. */
775 if (input_line
== 0 || line
< input_line
)
781 linenumber_table
= NULL
;
782 linenumber_count
= 0;
785 start_java_method (method
);
787 note_instructions (jcf
, method
);
789 give_name_to_locals (jcf
);
791 /* Convert bytecode to trees. */
792 expand_byte_code (jcf
, method
);
797 if (flag_emit_class_files
)
798 write_classfile (current_class
);
802 (*debug_hooks
->end_source_file
) (save_location
.line
);
803 input_location
= save_location
;
806 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
809 parse_source_file_1 (tree real_file
, FILE *finput
)
811 int save_error_count
= java_error_count
;
813 /* Mark the file as parsed. */
814 HAS_BEEN_ALREADY_PARSED_P (real_file
) = 1;
816 jcf_dependency_add_file (input_filename
, 0);
818 lang_init_source (1); /* Error msgs have no method prototypes */
820 /* There's no point in trying to find the current encoding unless we
821 are going to do something intelligent with it -- hence the test
823 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_LANGINFO_CODESET)
824 setlocale (LC_CTYPE
, "");
825 if (current_encoding
== NULL
)
826 current_encoding
= nl_langinfo (CODESET
);
828 if (current_encoding
== NULL
|| *current_encoding
== '\0')
829 current_encoding
= DEFAULT_ENCODING
;
831 /* Initialize the parser */
832 java_init_lex (finput
, current_encoding
);
833 java_parse_abort_on_error ();
835 java_parse (); /* Parse and build partial tree nodes. */
836 java_parse_abort_on_error ();
839 /* Process a parsed source file, resolving names etc. */
842 parse_source_file_2 (void)
844 int save_error_count
= java_error_count
;
845 java_complete_class (); /* Parse unsatisfied class decl. */
846 java_parse_abort_on_error ();
850 parse_source_file_3 (void)
852 int save_error_count
= java_error_count
;
853 java_check_circular_reference (); /* Check on circular references */
854 java_parse_abort_on_error ();
855 java_fix_constructors (); /* Fix the constructors */
856 java_parse_abort_on_error ();
857 java_reorder_fields (); /* Reorder the fields */
861 add_predefined_file (tree name
)
863 predef_filenames
= tree_cons (NULL_TREE
, name
, predef_filenames
);
867 predefined_filename_p (tree node
)
871 for (iter
= predef_filenames
; iter
!= NULL_TREE
; iter
= TREE_CHAIN (iter
))
873 if (TREE_VALUE (iter
) == node
)
879 /* Generate a function that does all static initialization for this
883 java_emit_static_constructor (void)
887 emit_register_classes (&body
);
888 write_resource_constructor (&body
);
891 cgraph_build_static_cdtor ('I', body
, DEFAULT_INIT_PRIORITY
);
895 java_parse_file (int set_yydebug ATTRIBUTE_UNUSED
)
897 int filename_count
= 0;
903 if (flag_filelist_file
)
906 finput
= fopen (input_filename
, "r");
908 fatal_error ("can't open %s: %m", input_filename
);
909 list
= xmalloc(avail
);
917 avail
= 2 * (count
+ avail
);
918 list
= xrealloc (list
, avail
);
920 avail
= avail
- count
;
922 /* Subtract to to guarantee space for final '\0'. */
923 count
= fread (next
, 1, avail
- 1, finput
);
927 fatal_error ("error closing %s: %m", input_filename
);
938 list
= input_filename
? xstrdup (input_filename
) : 0;
942 for (next
= list
; ; )
945 if (flag_filelist_file
&& ! in_quotes
946 && (ch
== '\n' || ch
== '\r' || ch
== '\t' || ch
== ' '
947 || ch
== '&') /* FIXME */)
961 if (flag_filelist_file
&& ch
== '"')
963 in_quotes
= ! in_quotes
;
984 int len
= strlen (list
);
986 obstack_grow0 (&temporary_obstack
, list
, len
);
987 value
= obstack_finish (&temporary_obstack
);
991 /* Exclude file that we see twice on the command line. For
992 all files except {Class,Error,Object,RuntimeException,String,
993 Throwable}.java we can rely on maybe_get_identifier. For
994 these files, we need to do a linear search of
995 current_file_list. This search happens only for these
996 files, presumably only when we're recompiling libgcj. */
998 if ((id
= maybe_get_identifier (value
)))
1000 if (predefined_filename_p (id
))
1003 for (c
= current_file_list
; c
; c
= TREE_CHAIN (c
))
1004 if (TREE_VALUE (c
) == id
)
1013 location_t warn_loc
;
1014 warn_loc
.file
= value
;
1016 warning ("%Hsource file seen twice on command line and "
1017 "will be compiled only once", &warn_loc
);
1021 node
= get_identifier (value
);
1022 IS_A_COMMAND_LINE_FILENAME_P (node
) = 1;
1023 current_file_list
= tree_cons (NULL_TREE
, node
,
1030 if (filename_count
== 0)
1031 warning ("no input file specified");
1035 const char *resource_filename
;
1037 /* Only one resource file may be compiled at a time. */
1038 assert (TREE_CHAIN (current_file_list
) == NULL
);
1040 resource_filename
= IDENTIFIER_POINTER (TREE_VALUE (current_file_list
));
1041 compile_resource_file (resource_name
, resource_filename
);
1046 current_jcf
= main_jcf
;
1047 current_file_list
= nreverse (current_file_list
);
1048 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1050 unsigned char magic_string
[4];
1052 tree name
= TREE_VALUE (node
);
1055 /* Skip already parsed files */
1056 real_file
= get_identifier (lrealpath (IDENTIFIER_POINTER (name
)));
1057 if (HAS_BEEN_ALREADY_PARSED_P (real_file
))
1060 /* Close previous descriptor, if any */
1061 if (finput
&& fclose (finput
))
1062 fatal_error ("can't close input file %s: %m", main_input_filename
);
1064 finput
= fopen (IDENTIFIER_POINTER (name
), "rb");
1066 fatal_error ("can't open %s: %m", IDENTIFIER_POINTER (name
));
1068 #ifdef IO_BUFFER_SIZE
1069 setvbuf (finput
, xmalloc (IO_BUFFER_SIZE
),
1070 _IOFBF
, IO_BUFFER_SIZE
);
1072 input_filename
= IDENTIFIER_POINTER (name
);
1074 /* Figure what kind of file we're dealing with */
1075 if (fread (magic_string
, 1, 4, finput
) == 4)
1077 fseek (finput
, 0L, SEEK_SET
);
1078 magic
= GET_u4 (magic_string
);
1080 if (magic
== 0xcafebabe)
1082 CLASS_FILE_P (node
) = 1;
1083 current_jcf
= ggc_alloc (sizeof (JCF
));
1084 JCF_ZERO (current_jcf
);
1085 current_jcf
->read_state
= finput
;
1086 current_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1087 jcf_parse (current_jcf
);
1088 TYPE_JCF (current_class
) = current_jcf
;
1089 CLASS_FROM_CURRENTLY_COMPILED_P (current_class
) = 1;
1090 TREE_PURPOSE (node
) = current_class
;
1092 else if (magic
== (JCF_u4
)ZIPMAGIC
)
1094 ZIP_FILE_P (node
) = 1;
1095 main_jcf
= ggc_alloc (sizeof (JCF
));
1096 JCF_ZERO (main_jcf
);
1097 main_jcf
->read_state
= finput
;
1098 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1099 if (open_in_zip (main_jcf
, input_filename
, NULL
, 0) < 0)
1100 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name
));
1101 localToFile
= SeenZipFiles
;
1102 /* Register all the classes defined there. */
1103 process_zip_dir (main_jcf
->read_state
);
1104 parse_zip_file_entries ();
1107 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1112 JAVA_FILE_P (node
) = 1;
1113 java_push_parser_context ();
1114 java_parser_context_save_global ();
1116 parse_source_file_1 (real_file
, finput
);
1117 java_parser_context_restore_global ();
1118 java_pop_parser_context (1);
1122 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1124 input_filename
= ctxp
->filename
;
1125 parse_source_file_2 ();
1128 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1130 input_filename
= ctxp
->filename
;
1131 parse_source_file_3 ();
1134 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1136 input_filename
= IDENTIFIER_POINTER (TREE_VALUE (node
));
1137 if (CLASS_FILE_P (node
))
1139 output_class
= current_class
= TREE_PURPOSE (node
);
1140 current_jcf
= TYPE_JCF (current_class
);
1141 layout_class (current_class
);
1142 load_inner_classes (current_class
);
1143 parse_class_file ();
1144 JCF_FINISH (current_jcf
);
1147 input_filename
= main_input_filename
;
1149 java_expand_classes ();
1150 if (java_report_errors () || flag_syntax_only
)
1153 /* Expand all classes compiled from source. */
1154 java_finish_classes ();
1157 /* Arrange for any necessary initialization to happen. */
1158 java_emit_static_constructor ();
1160 /* Only finalize the compilation unit after we've told cgraph which
1161 functions have their addresses stored. */
1162 cgraph_finalize_compilation_unit ();
1167 /* Return the name of the class corresponding to the name of the file
1168 in this zip entry. The result is newly allocated using ALLOC. */
1170 compute_class_name (struct ZipDirectory
*zdir
)
1172 char *class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1176 class_name
= ALLOC (zdir
->filename_length
+ 1 - 6);
1177 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
- 6);
1178 class_name
[zdir
->filename_length
- 6] = '\0';
1179 for (j
= 0; class_name
[j
]; ++j
)
1180 class_name
[j
] = class_name
[j
] == '/' ? '.' : class_name
[j
];
1184 /* Return 0 if we should skip this entry, 1 if it is a .class file, 2
1185 if it is a property file of some sort. */
1187 classify_zip_file (struct ZipDirectory
*zdir
)
1189 char *class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1191 if (zdir
->filename_length
> 6
1192 && !strncmp (&class_name_in_zip_dir
[zdir
->filename_length
- 6],
1196 /* For now we drop the manifest, but not other information. */
1197 if (zdir
->filename_length
== 20
1198 && !strncmp (class_name_in_zip_dir
, "META-INF/MANIFEST.MF", 20))
1201 /* Drop directory entries. */
1202 if (zdir
->filename_length
> 0
1203 && class_name_in_zip_dir
[zdir
->filename_length
- 1] == '/')
1209 /* Process all class entries found in the zip file. */
1211 parse_zip_file_entries (void)
1213 struct ZipDirectory
*zdir
;
1216 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1217 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1221 switch (classify_zip_file (zdir
))
1228 char *class_name
= compute_class_name (zdir
);
1229 class = lookup_class (get_identifier (class_name
));
1231 current_jcf
= TYPE_JCF (class);
1232 output_class
= current_class
= class;
1234 if (! CLASS_LOADED_P (class))
1236 if (! CLASS_PARSED_P (class))
1238 read_zip_member (current_jcf
, zdir
, localToFile
);
1239 jcf_parse (current_jcf
);
1241 layout_class (current_class
);
1242 load_inner_classes (current_class
);
1245 if (TYPE_SIZE (current_class
) != error_mark_node
)
1247 input_filename
= current_jcf
->filename
;
1248 parse_class_file ();
1249 FREE (current_jcf
->buffer
); /* No longer necessary */
1250 /* Note: there is a way to free this buffer right after a
1251 class seen in a zip file has been parsed. The idea is the
1252 set its jcf in such a way that buffer will be reallocated
1253 the time the code for the class will be generated. FIXME. */
1260 char *file_name
, *class_name_in_zip_dir
, *buffer
;
1262 file_name
= ALLOC (zdir
->filename_length
+ 1);
1263 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1264 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1265 file_name
[zdir
->filename_length
] = '\0';
1266 jcf
= ALLOC (sizeof (JCF
));
1268 jcf
->read_state
= finput
;
1269 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1270 jcf
->java_source
= 0;
1271 jcf
->classname
= NULL
;
1272 jcf
->filename
= file_name
;
1275 if (read_zip_member (jcf
, zdir
, localToFile
) < 0)
1276 fatal_error ("error while reading %s from zip file", file_name
);
1278 buffer
= ALLOC (zdir
->filename_length
+ 1 +
1279 (jcf
->buffer_end
- jcf
->buffer
));
1280 strcpy (buffer
, file_name
);
1281 /* This is not a typo: we overwrite the trailing \0 of the
1282 file name; this is just how the data is laid out. */
1283 memcpy (buffer
+ zdir
->filename_length
,
1284 jcf
->buffer
, jcf
->buffer_end
- jcf
->buffer
);
1286 compile_resource_data (file_name
, buffer
,
1287 jcf
->buffer_end
- jcf
->buffer
);
1300 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1301 jcf up for further processing and link it to the created class. */
1304 process_zip_dir (FILE *finput
)
1309 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1310 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1312 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1316 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1318 /* Here we skip non-class files; we handle them later. */
1319 if (classify_zip_file (zdir
) != 1)
1322 class_name
= compute_class_name (zdir
);
1323 file_name
= ALLOC (zdir
->filename_length
+1);
1324 jcf
= ggc_alloc (sizeof (JCF
));
1327 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1328 file_name
[zdir
->filename_length
] = '\0';
1330 class = lookup_class (get_identifier (class_name
));
1332 jcf
->read_state
= finput
;
1333 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1334 jcf
->java_source
= 0;
1335 jcf
->classname
= class_name
;
1336 jcf
->filename
= file_name
;
1339 TYPE_JCF (class) = jcf
;
1343 /* Initialization. */
1346 init_jcf_parse (void)
1351 #include "gt-java-jcf-parse.h"