1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996 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> */
33 #include "java-except.h"
35 #include "java-tree.h"
37 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
38 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
39 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
40 #define JPOOL_UTF_DATA(JCF, INDEX) \
41 ((unsigned char*) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
42 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
44 unsigned char save; unsigned char *text; \
45 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
46 text = (JCF)->read_ptr; \
47 save = text[LENGTH]; \
49 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
50 text[LENGTH] = save; \
51 JCF_SKIP (JCF, LENGTH); } while (0)
63 extern struct obstack
*saveable_obstack
;
64 extern struct obstack temporary_obstack
;
65 extern struct obstack permanent_obstack
;
67 /* The class we are currently processing. */
68 tree current_class
= NULL_TREE
;
70 /* The class we started with. */
71 tree main_class
= NULL_TREE
;
73 /* The FIELD_DECL for the current field. */
74 static tree current_field
= NULL_TREE
;
76 static tree current_method
= NULL_TREE
;
78 static tree give_name_to_class
PROTO ((JCF
*jcf
, int index
));
80 void parse_zip_file_entries (void);
81 void process_zip_dir();
83 /* Source file compilation declarations */
84 static void parse_source_file ();
85 extern int java_error_count
;
86 #define java_parse_abort_on_error() \
88 if (java_error_count) \
90 java_report_errors (); \
91 java_pop_parser_context (); \
96 /* Handle "SourceFile" attribute. */
99 set_source_filename (jcf
, index
)
103 tree sfname_id
= get_name_constant (jcf
, index
);
104 char *sfname
= IDENTIFIER_POINTER (sfname_id
);
105 if (input_filename
!= NULL
)
107 int old_len
= strlen (input_filename
);
108 int new_len
= IDENTIFIER_LENGTH (sfname_id
);
109 /* Use the current input_filename (derived from the class name)
110 if it has a directory prefix, but otherwise matches sfname. */
111 if (old_len
> new_len
112 && strcmp (sfname
, input_filename
+ old_len
- new_len
) == 0
113 && (input_filename
[old_len
- new_len
- 1] == '/'
114 || input_filename
[old_len
- new_len
- 1] == '\\'))
117 input_filename
= sfname
;
118 DECL_SOURCE_FILE (TYPE_NAME (current_class
)) = sfname
;
119 if (current_class
== main_class
) main_input_filename
= input_filename
;
122 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
124 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
125 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
126 current_class = give_name_to_class (jcf, THIS); \
127 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
129 #define HANDLE_CLASS_INTERFACE(INDEX) \
130 add_interface (current_class, get_class_constant (jcf, INDEX))
132 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
133 { int sig_index = SIGNATURE; \
134 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
135 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
136 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); }
138 #define HANDLE_END_FIELDS() \
139 (current_field = NULL_TREE)
141 #define HANDLE_CONSTANTVALUE(INDEX) \
142 { tree constant; int index = INDEX; \
143 if (JPOOL_TAG (jcf, index) == CONSTANT_String) { \
144 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
145 constant = build_utf8_ref (name); \
148 constant = get_constant (jcf, index); \
149 set_constant_value (current_field, constant); }
151 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
152 (current_method = add_method (current_class, ACCESS_FLAGS, \
153 get_name_constant (jcf, NAME), \
154 get_name_constant (jcf, SIGNATURE)), \
155 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
156 DECL_LINENUMBERS_OFFSET (current_method) = 0)
158 #define HANDLE_END_METHODS() \
159 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
160 if (handle_type != current_class) layout_type (handle_type); }
162 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
163 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
164 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
165 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
166 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
168 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
170 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
171 JCF_SKIP (jcf, n * 10); }
173 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
175 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
176 JCF_SKIP (jcf, n * 4); }
178 #include "jcf-reader.c"
183 parse_signature (jcf
, sig_index
)
187 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE(jcf
)
188 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
189 fatal ("invalid field/method signature");
192 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
193 JPOOL_UTF_LENGTH (jcf
, sig_index
));
200 /* Make identifier nodes long enough for the language-specific slots. */
201 set_identifier_size (sizeof (struct lang_identifier
));
212 get_constant (jcf
, index
)
218 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
220 tag
= JPOOL_TAG (jcf
, index
);
221 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
222 return (tree
) jcf
->cpool
.data
[index
];
223 push_obstacks (&permanent_obstack
, &permanent_obstack
);
226 case CONSTANT_Integer
:
228 jint num
= JPOOL_INT(jcf
, index
);
229 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
230 TREE_TYPE (value
) = int_type_node
;
235 jint num
= JPOOL_INT (jcf
, index
);
236 HOST_WIDE_INT lo
, hi
;
237 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
238 num
= JPOOL_INT (jcf
, index
+1);
239 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
240 value
= build_int_2 (lo
, hi
);
241 TREE_TYPE (value
) = long_type_node
;
242 force_fit_type (value
, 0);
245 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
248 jint num
= JPOOL_INT(jcf
, index
);
250 #ifdef REAL_ARITHMETIC
251 d
= REAL_VALUE_FROM_TARGET_SINGLE (num
);
253 union { float f
; jint i
; } u
;
257 value
= build_real (float_type_node
, d
);
260 case CONSTANT_Double
:
262 HOST_WIDE_INT num
[2];
264 HOST_WIDE_INT lo
, hi
;
265 num
[0] = JPOOL_INT (jcf
, index
);
266 lshift_double (num
[0], 0, 32, 64, &lo
, &hi
, 0);
267 num
[0] = JPOOL_INT (jcf
, index
+1);
268 add_double (lo
, hi
, num
[0], 0, &lo
, &hi
);
269 if (FLOAT_WORDS_BIG_ENDIAN
)
279 #ifdef REAL_ARITHMETIC
280 d
= REAL_VALUE_FROM_TARGET_DOUBLE (num
);
282 union { double d
; jint i
[2]; } u
;
283 u
.i
[0] = (jint
) num
[0];
284 u
.i
[1] = (jint
) num
[1];
287 value
= build_real (double_type_node
, d
);
290 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
291 case CONSTANT_String
:
293 extern struct obstack
*expression_obstack
;
294 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
295 char *utf8_ptr
= IDENTIFIER_POINTER (name
);
296 unsigned char *str_ptr
;
297 int utf8_len
= IDENTIFIER_LENGTH (name
);
298 unsigned char *str
= (unsigned char*)utf8_ptr
;
302 /* Count the number of Unicode characters in the string,
303 while checking for a malformed Utf8 string. */
304 for (str_len
= 0; i
> 0; str_len
++)
306 int char_len
= UT8_CHAR_LENGTH (*str
);
307 if (char_len
< 0 || char_len
> 2 || char_len
> i
)
308 fatal ("bad string constant");
313 value
= make_node (STRING_CST
);
314 TREE_STRING_LENGTH (value
) = 2 * str_len
;
315 TREE_STRING_POINTER (value
)
316 = obstack_alloc (expression_obstack
, 2 * str_len
);
317 str_ptr
= (unsigned char *) TREE_STRING_POINTER (value
);
318 str
= (unsigned char*)utf8_ptr
;
319 for (i
= 0; i
< str_len
; i
++)
322 int char_len
= UT8_CHAR_LENGTH (*str
);
329 char_value
= *str
++ & 0x1F;
330 char_value
= (char_value
<< 6) | (*str
++ & 0x3F);
333 char_value
= *str_ptr
++ & 0x0F;
334 char_value
= (char_value
<< 6) | (*str
++ & 0x3F);
335 char_value
= (char_value
<< 6) | (*str
++ & 0x3F);
340 if (BYTES_BIG_ENDIAN
)
342 *str_ptr
++ = char_value
>> 8;
343 *str_ptr
++ = char_value
& 0xFF;
347 *str_ptr
++ = char_value
& 0xFF;
348 *str_ptr
++ = char_value
>> 8;
357 JPOOL_TAG(jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
358 jcf
->cpool
.data
[index
] = (jword
) value
;
361 fatal ("bad value constant type %d, index %d",
362 JPOOL_TAG( jcf
, index
), index
);
366 get_name_constant (jcf
, index
)
370 tree name
= get_constant (jcf
, index
);
371 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
372 fatal ("bad nameandtype index %d", index
);
377 give_name_to_class (jcf
, i
)
381 if (i
<= 0 || i
>= JPOOL_SIZE(jcf
)
382 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
383 fatal ("bad class index %d", i
);
387 int j
= JPOOL_USHORT1 (jcf
, i
);
388 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
389 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
390 JPOOL_UTF_LENGTH (jcf
, j
));
391 this_class
= lookup_class (class_name
);
392 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
394 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
395 main_input_filename
= input_filename
;
397 jcf
->cpool
.data
[i
] = (jword
) this_class
;
398 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
403 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
406 get_class_constant (JCF
*jcf
, int i
)
409 if (i
<= 0 || i
>= JPOOL_SIZE(jcf
)
410 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
411 fatal ("bad class index %d", i
);
413 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
415 int name_index
= JPOOL_USHORT1 (jcf
, i
);
416 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
417 char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
418 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
419 if (name
[0] == '[') /* Handle array "classes". */
420 type
= parse_signature_string (name
, nlength
);
423 tree cname
= unmangle_classname (name
, nlength
);
424 type
= lookup_class (cname
);
426 jcf
->cpool
.data
[i
] = (jword
) type
;
427 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
430 type
= (tree
) jcf
->cpool
.data
[i
];
437 static char default_path
[] = DEFAULT_CLASS_PATH
;
439 if (classpath
== NULL
)
441 classpath
= (char *) getenv ("CLASSPATH");
442 if (classpath
== NULL
)
444 warning ("CLASSPATH not set");
445 classpath
= default_path
;
451 DEFUN(jcf_out_of_synch
, (jcf
),
454 char *source
= strdup (jcf
->filename
);
455 int i
= strlen (source
);
457 while (source
[i
] != '.')
461 warning ("Class file `%s' out of synch with `%s.java'",
462 jcf
->filename
, source
);
466 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
467 called from the parser, otherwise it's a RECORD_TYPE node. If
468 VERBOSE is 1, print error message on failure to load a class. */
471 load_class (class_or_name
, verbose
)
476 tree name
= (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
?
477 class_or_name
: DECL_NAME (TYPE_NAME (class_or_name
)));
478 tree save_current_class
= current_class
;
479 char *save_input_filename
= input_filename
;
480 JCF
*save_current_jcf
= current_jcf
;
482 if (current_jcf
->read_state
)
483 saved_pos
= ftell (current_jcf
->read_state
);
485 push_obstacks (&permanent_obstack
, &permanent_obstack
);
489 /* Search in current zip first. */
490 if (find_in_current_zip (IDENTIFIER_POINTER (name
),
491 IDENTIFIER_LENGTH (name
), &jcf
) == 0)
492 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
497 error ("Cannot find class file class %s.",
498 IDENTIFIER_POINTER (name
));
499 TYPE_SIZE (class_or_name
) = error_mark_node
;
500 if (!strcmp (classpath
, DEFAULT_CLASS_PATH
))
502 pop_obstacks (); /* FIXME: one pop_obstack() per function */
508 this_jcf
.seen_in_zip
= 0;
509 current_jcf
= &this_jcf
;
510 if (this_jcf
.outofsynch
)
511 jcf_out_of_synch (current_jcf
);
516 if (current_jcf
->java_source
)
517 jcf_parse_source (current_jcf
);
519 int saved_lineno
= lineno
;
520 input_filename
= current_jcf
->filename
;
521 jcf_parse (current_jcf
);
522 lineno
= saved_lineno
;
525 if (!current_jcf
->seen_in_zip
)
526 JCF_FINISH (current_jcf
);
527 /* DECL_IGNORED_P (TYPE_NAME (class_or_name)) = 1;*/
530 current_class
= save_current_class
;
531 input_filename
= save_input_filename
;
532 current_jcf
= save_current_jcf
;
533 if (current_jcf
->read_state
)
534 fseek (current_jcf
->read_state
, saved_pos
, SEEK_SET
);
537 /* Parse a source file when JCF refers to a source file. This piece
538 needs further work as far as error handling and report. */
541 jcf_parse_source (jcf
)
544 java_parser_context_save_global ();
546 input_filename
= current_jcf
->filename
;
547 if (!(finput
= fopen (input_filename
, "r")))
548 fatal ("input file `%s' just disappeared - jcf_parse_source",
551 parse_source_file (1); /* Parse only */
552 if (current_class
&& TREE_TYPE (current_class
))
553 CLASS_FROM_SOURCE_P (TREE_TYPE (current_class
)) = 1;
556 java_parser_context_restore_global ();
559 /* Parse the .class file JCF. */
567 if (jcf_parse_preamble (jcf
) != 0)
568 fatal ("Not a valid Java .class file.\n");
569 code
= jcf_parse_constant_pool (jcf
);
571 fatal ("error while parsing constant pool");
572 code
= verify_constant_pool (jcf
);
574 fatal ("error in constant pool entry #%d\n", code
);
576 jcf_parse_class (jcf
);
577 if (main_class
== NULL_TREE
)
578 main_class
= current_class
;
579 if (! quiet_flag
&& TYPE_NAME (current_class
))
580 fprintf (stderr
, " class %s",
581 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
582 CLASS_LOADED_P (current_class
) = 1;
584 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
586 switch (JPOOL_TAG (jcf
, i
))
589 get_class_constant (jcf
, i
);
594 code
= jcf_parse_fields (jcf
);
596 fatal ("error while parsing fields");
597 code
= jcf_parse_methods (jcf
);
599 fatal ("error while parsing methods");
600 code
= jcf_parse_final_attributes (jcf
);
602 fatal ("error while parsing final attributes");
604 /* The fields of class_type_node are already in correct order. */
605 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
606 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
608 push_obstacks (&permanent_obstack
, &permanent_obstack
);
609 layout_class (current_class
);
614 init_outgoing_cpool ()
616 current_constant_pool_data_ref
= NULL_TREE
;
617 if (outgoing_cpool
== NULL
)
619 static CPool outgoing_cpool_buffer
;
620 outgoing_cpool
= &outgoing_cpool_buffer
;
621 CPOOL_INIT(outgoing_cpool
);
625 CPOOL_REINIT(outgoing_cpool
);
633 char *save_input_filename
= input_filename
;
634 int save_lineno
= lineno
;
636 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
638 debug_start_source_file (input_filename
);
639 init_outgoing_cpool ();
641 for ( method
= TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class
));
642 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
644 JCF
*jcf
= current_jcf
;
646 if (METHOD_NATIVE (method
) || METHOD_ABSTRACT (method
))
649 if (DECL_CODE_OFFSET (method
) == 0)
651 error ("missing Code attribute");
656 if (DECL_LINENUMBERS_OFFSET (method
))
659 register unsigned char *ptr
;
660 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
661 linenumber_count
= i
= JCF_readu2 (jcf
);
662 linenumber_table
= ptr
= jcf
->read_ptr
;
664 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
666 int line
= GET_u2 (ptr
);
667 /* Set initial lineno lineno to smallest linenumber.
668 * Needs to be set before init_function_start. */
669 if (lineno
== 0 || line
< lineno
)
675 linenumber_table
= NULL
;
676 linenumber_count
= 0;
679 start_java_method (method
);
681 give_name_to_locals (jcf
);
683 /* Actually generate code. */
684 expand_byte_code (jcf
, method
);
689 if (flag_emit_class_files
)
690 write_classfile (current_class
);
691 make_class_data (current_class
);
693 rest_of_decl_compilation (TYPE_NAME (current_class
), (char*) 0, 1, 0);
695 debug_end_source_file (save_lineno
);
696 input_filename
= save_input_filename
;
697 lineno
= save_lineno
;
700 /* Parse a source file, as pointed by the current JCF. If PARSE_ONLY
701 is non zero, we're not parsing a file found on the command line and
702 we skip things related to code generation. */
705 parse_source_file (parse_only
)
708 lang_init_source (1); /* Error msgs have no method prototypes */
709 java_push_parser_context ();
710 java_init_lex (); /* Initialize the parser */
711 java_parse_abort_on_error ();
712 java_parse (); /* Parse and build partial tree nodes. */
713 java_parse_abort_on_error ();
714 java_complete_class (); /* Parse unsatisfied class decl. */
715 java_parse_abort_on_error ();
716 java_check_circular_reference (); /* Check on circular references */
717 java_parse_abort_on_error ();
718 java_check_methods (); /* Check the methods */
719 java_parse_abort_on_error ();
720 java_layout_classes ();
721 java_parse_abort_on_error ();
724 lang_init_source (2); /* Error msgs have method prototypes */
725 java_complete_expand_methods (); /* Complete and expand method bodies */
726 java_parse_abort_on_error ();
727 java_expand_finals (); /* Expand and check the finals */
728 java_parse_abort_on_error ();
729 java_check_final (); /* Check unitialized final */
730 java_parse_abort_on_error ();
731 if (! flag_emit_class_files
)
732 emit_register_class ();
733 java_report_errors (); /* Final step for this file */
735 if (flag_emit_class_files
)
736 write_classfile (current_class
);
737 java_pop_parser_context ();
743 /* Everything migh be enclosed within a loop processing each file after
746 switch (jcf_figure_file_type (current_jcf
))
749 parse_zip_file_entries ();
750 emit_register_class ();
753 jcf_parse (current_jcf
);
755 emit_register_class ();
758 parse_source_file (0); /* Parse and generate */
764 static struct ZipFileCache
*localToFile
;
766 /* Process all class entries found in the zip file. */
768 parse_zip_file_entries (void)
770 struct ZipDirectory
*zdir
;
773 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->z
.central_directory
;
774 i
< localToFile
->z
.count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
778 /* We don't need to consider those files. */
779 if (!zdir
->size
|| !zdir
->filename_offset
)
782 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir
)));
783 current_jcf
= TYPE_LANG_SPECIFIC (class)->jcf
;
784 current_class
= class;
786 if ( !CLASS_LOADED_P (class))
788 fseek (current_jcf
->read_state
, current_jcf
->zip_offset
, SEEK_SET
);
789 jcf_parse (current_jcf
);
792 input_filename
= current_jcf
->filename
;
795 FREE (current_jcf
->buffer
); /* No longer necessary */
796 /* Note: there is a way to free this buffer right after a class seen
797 in a zip file has been parsed. The idea is the set its jcf in such
798 a way that buffer will be reallocated the time the code for the class
799 will be generated. FIXME. */
803 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
804 jcf up for further processing and link it to the created class. */
806 void process_zip_dir()
811 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->z
.central_directory
;
812 i
< localToFile
->z
.count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
814 char *class_name
, *file_name
, *class_name_in_zip_dir
;
819 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
821 /* We choose to not to process entries with a zero size or entries
822 not bearing the .class extention. */
823 if (!zdir
->size
|| !zdir
->filename_offset
||
824 strncmp (&class_name_in_zip_dir
[zdir
->filename_length
-6],
827 /* So it will be skipped in parse_zip_file_entries */
832 class_name
= ALLOC (zdir
->filename_length
+1-6);
833 file_name
= ALLOC (zdir
->filename_length
+1);
834 jcf
= ALLOC (sizeof (JCF
));
837 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
-6);
838 class_name
[zdir
->filename_length
-6] = '\0';
839 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
840 file_name
[zdir
->filename_length
] = '\0';
842 for (j
=0; class_name
[j
]; j
++)
843 class_name
[j
] = (class_name
[j
] == '/' ? '.' : class_name
[j
]);
845 /* Yes, we write back the true class name into the zip directory. */
846 strcpy (class_name_in_zip_dir
, class_name
);
847 zdir
->filename_length
= j
;
848 class = lookup_class (get_identifier (class_name
));
850 jcf
->read_state
= finput
;
851 jcf
->filbuf
= jcf_filbuf_from_stdio
;
852 jcf
->seen_in_zip
= 1;
853 jcf
->java_source
= 0;
854 jcf
->zip_offset
= zdir
->filestart
;
855 jcf
->classname
= class_name
;
856 jcf
->filename
= file_name
;
858 TYPE_LANG_SPECIFIC (class) =
859 (struct lang_type
*) perm_calloc (1, sizeof (struct lang_type
));
860 TYPE_LANG_SPECIFIC (class)->jcf
= jcf
;
864 /* Lookup class NAME and figure whether is a class already found in the current
867 DEFUN(find_in_current_zip
, (name
, length
, jcf
),
868 char *name AND
int length AND JCF
**jcf
)
871 tree class_name
= maybe_get_identifier (name
), class, icv
;
876 if (!(icv
= IDENTIFIER_CLASS_VALUE (class_name
)))
879 class = TREE_TYPE (icv
);
881 /* Doesn't have jcf specific info ? It's not ours */
882 if (!TYPE_LANG_SPECIFIC (class) || !TYPE_LANG_SPECIFIC (class)->jcf
)
885 *jcf
= local_jcf
= TYPE_LANG_SPECIFIC (class)->jcf
;
886 fseek (local_jcf
->read_state
, local_jcf
->zip_offset
, SEEK_SET
);
890 /* Figure what kind of file we're dealing with */
892 DEFUN(jcf_figure_file_type
, (jcf
),
895 unsigned char magic_string
[4];
898 if (fread (magic_string
, 1, 4, jcf
->read_state
) != 4)
899 jcf_unexpected_eof (jcf
, 4);
901 fseek (jcf
->read_state
, 0L, SEEK_SET
);
902 magic
= GET_u4 (magic_string
);
904 if (magic
== 0xcafebabe)
907 if (!open_in_zip (jcf
, input_filename
, NULL
))
909 localToFile
= ALLOC (sizeof (struct ZipFileCache
));
910 bcopy (SeenZipFiles
, localToFile
, sizeof (struct ZipFileCache
));
911 process_zip_dir (); /* Register all the class defined there */