1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000 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"
38 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
39 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
40 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
41 #define JPOOL_UTF_DATA(JCF, INDEX) \
42 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
43 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
45 unsigned char save; unsigned char *text; \
46 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
47 text = (JCF)->read_ptr; \
48 save = text[LENGTH]; \
50 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
51 text[LENGTH] = save; \
52 JCF_SKIP (JCF, LENGTH); } while (0)
56 extern struct obstack *saveable_obstack;
57 extern struct obstack temporary_obstack;
58 extern struct obstack permanent_obstack;
60 /* Set to non-zero value in order to emit class initilization code
61 before static field references. */
62 extern int always_initialize_class_p;
64 /* The class we are currently processing. */
65 tree current_class = NULL_TREE;
67 /* The class we started with. */
68 tree main_class = NULL_TREE;
70 /* List of all class DECL seen so far. */
71 tree all_class_list = NULL_TREE;
73 /* The FIELD_DECL for the current field. */
74 static tree current_field = NULL_TREE;
76 /* The METHOD_DECL for the current method. */
77 static tree current_method = NULL_TREE;
79 /* The Java .class file that provides main_class; the main input file. */
80 static struct JCF main_jcf[1];
82 /* Declarations of some functions used here. */
83 static tree give_name_to_class PARAMS ((JCF *jcf, int index));
84 static void parse_zip_file_entries PARAMS ((void));
85 static void process_zip_dir PARAMS ((void));
86 static void parse_source_file PARAMS ((tree));
87 static void jcf_parse_source PARAMS ((void));
88 static int jcf_figure_file_type PARAMS ((JCF *));
89 static int find_in_current_zip PARAMS ((const char *, struct JCF **));
90 static void parse_class_file PARAMS ((void));
91 static void set_source_filename PARAMS ((JCF *, int));
92 static int predefined_filename_p PARAMS ((tree));
94 /* Handle "SourceFile" attribute. */
97 set_source_filename (jcf, index)
101 tree sfname_id = get_name_constant (jcf, index);
102 char *sfname = IDENTIFIER_POINTER (sfname_id);
103 if (input_filename != NULL)
105 int old_len = strlen (input_filename);
106 int new_len = IDENTIFIER_LENGTH (sfname_id);
107 /* Use the current input_filename (derived from the class name)
108 if it has a directory prefix, but otherwise matches sfname. */
109 if (old_len > new_len
110 && strcmp (sfname, input_filename + old_len - new_len) == 0
111 && (input_filename[old_len - new_len - 1] == '/'
112 || input_filename[old_len - new_len - 1] == '\\'))
115 input_filename = sfname;
116 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
117 if (current_class == main_class) main_input_filename = input_filename;
120 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
122 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
123 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
124 current_class = give_name_to_class (jcf, THIS); \
125 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
127 #define HANDLE_CLASS_INTERFACE(INDEX) \
128 add_interface (current_class, get_class_constant (jcf, INDEX))
130 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
131 { int sig_index = SIGNATURE; \
132 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
133 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
134 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); }
136 #define HANDLE_END_FIELDS() \
137 (current_field = NULL_TREE)
139 #define HANDLE_CONSTANTVALUE(INDEX) \
140 { tree constant; int index = INDEX; \
141 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
142 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
143 constant = build_utf8_ref (name); \
146 constant = get_constant (jcf, index); \
147 set_constant_value (current_field, constant); }
149 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
150 (current_method = add_method (current_class, ACCESS_FLAGS, \
151 get_name_constant (jcf, NAME), \
152 get_name_constant (jcf, SIGNATURE)), \
153 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
154 DECL_LINENUMBERS_OFFSET (current_method) = 0)
156 #define HANDLE_END_METHODS() \
157 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
158 if (handle_type != current_class) layout_type (handle_type); }
160 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
161 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
162 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
163 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
164 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
166 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
168 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
169 JCF_SKIP (jcf, n * 10); }
171 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
173 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
174 JCF_SKIP (jcf, n * 4); }
176 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
179 tree list = DECL_FUNCTION_THROWS (current_method); \
182 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
183 list = tree_cons (NULL_TREE, thrown_class, list); \
185 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
188 /* Link seen inner classes to their outer context and register the
189 inner class to its outer context. They will be later loaded. */
190 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
195 tree class = get_class_constant (jcf, JCF_readu2 (jcf)); \
196 if (!CLASS_COMPLETE_P (class)) \
198 tree outer = TYPE_NAME (get_class_constant (jcf, \
199 JCF_readu2 (jcf))); \
200 tree alias = get_name_constant (jcf, JCF_readu2 (jcf)); \
201 tree decl = TYPE_NAME (class); \
203 IDENTIFIER_GLOBAL_VALUE (alias) = decl; \
204 DECL_CONTEXT (decl) = outer; \
205 DECL_INNER_CLASS_LIST (outer) = \
206 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer)); \
207 CLASS_COMPLETE_P (class) = 1; \
214 #include "jcf-reader.c"
219 parse_signature (jcf, sig_index)
223 if (sig_index <= 0 || sig_index >= JPOOL_SIZE(jcf)
224 || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
225 fatal ("invalid field/method signature");
228 return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
229 JPOOL_UTF_LENGTH (jcf, sig_index));
236 /* Make identifier nodes long enough for the language-specific slots. */
237 set_identifier_size (sizeof (struct lang_identifier));
248 get_constant (jcf, index)
254 if (index <= 0 || index >= JPOOL_SIZE(jcf))
256 tag = JPOOL_TAG (jcf, index);
257 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
258 return (tree) jcf->cpool.data[index];
259 push_obstacks (&permanent_obstack, &permanent_obstack);
262 case CONSTANT_Integer:
264 jint num = JPOOL_INT(jcf, index);
265 value = build_int_2 (num, num < 0 ? -1 : 0);
266 TREE_TYPE (value) = int_type_node;
271 jint num = JPOOL_INT (jcf, index);
272 HOST_WIDE_INT lo, hi;
273 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
274 num = JPOOL_INT (jcf, index+1);
275 add_double (lo, hi, (uint32)num, 0, &lo, &hi);
276 value = build_int_2 (lo, hi);
277 TREE_TYPE (value) = long_type_node;
278 force_fit_type (value, 0);
281 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
284 jint num = JPOOL_INT(jcf, index);
286 #ifdef REAL_ARITHMETIC
287 d = REAL_VALUE_FROM_TARGET_SINGLE (num);
289 union { float f; jint i; } u;
293 value = build_real (float_type_node, d);
296 case CONSTANT_Double:
298 HOST_WIDE_INT num[2];
300 HOST_WIDE_INT lo, hi;
301 num[0] = JPOOL_INT (jcf, index);
302 lshift_double (num[0], 0, 32, 64, &lo, &hi, 0);
303 num[0] = JPOOL_INT (jcf, index+1);
304 add_double (lo, hi, num[0], 0, &lo, &hi);
305 if (FLOAT_WORDS_BIG_ENDIAN)
315 #ifdef REAL_ARITHMETIC
316 d = REAL_VALUE_FROM_TARGET_DOUBLE (num);
319 union { double d; jint i[2]; } u;
320 u.i[0] = (jint) num[0];
321 u.i[1] = (jint) num[1];
325 value = build_real (double_type_node, d);
328 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
329 case CONSTANT_String:
331 extern struct obstack *expression_obstack;
332 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
333 const char *utf8_ptr = IDENTIFIER_POINTER (name);
334 unsigned char *str_ptr;
335 int utf8_len = IDENTIFIER_LENGTH (name);
336 const unsigned char *str = (const unsigned char *)utf8_ptr;
340 /* Count the number of Unicode characters in the string,
341 while checking for a malformed Utf8 string. */
342 for (str_len = 0; i > 0; str_len++)
344 int char_len = UT8_CHAR_LENGTH (*str);
345 if (char_len < 0 || char_len > 2 || char_len > i)
346 fatal ("bad string constant");
351 value = make_node (STRING_CST);
352 TREE_TYPE (value) = build_pointer_type (string_type_node);
353 TREE_STRING_LENGTH (value) = 2 * str_len;
354 TREE_STRING_POINTER (value)
355 = obstack_alloc (expression_obstack, 2 * str_len);
356 str_ptr = (unsigned char *) TREE_STRING_POINTER (value);
357 str = (const unsigned char *)utf8_ptr;
358 for (i = 0; i < str_len; i++)
361 int char_len = UT8_CHAR_LENGTH (*str);
368 char_value = *str++ & 0x1F;
369 char_value = (char_value << 6) | (*str++ & 0x3F);
372 char_value = *str_ptr++ & 0x0F;
373 char_value = (char_value << 6) | (*str++ & 0x3F);
374 char_value = (char_value << 6) | (*str++ & 0x3F);
379 if (BYTES_BIG_ENDIAN)
381 *str_ptr++ = char_value >> 8;
382 *str_ptr++ = char_value & 0xFF;
386 *str_ptr++ = char_value & 0xFF;
387 *str_ptr++ = char_value >> 8;
396 JPOOL_TAG(jcf, index) = tag | CONSTANT_ResolvedFlag;
397 jcf->cpool.data [index] = (jword) value;
400 fatal ("bad value constant type %d, index %d",
401 JPOOL_TAG( jcf, index ), index);
405 get_name_constant (jcf, index)
409 tree name = get_constant (jcf, index);
410 if (TREE_CODE (name) != IDENTIFIER_NODE)
411 fatal ("bad nameandtype index %d", index);
416 give_name_to_class (jcf, i)
420 if (i <= 0 || i >= JPOOL_SIZE(jcf)
421 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
422 fatal ("bad class index %d", i);
426 int j = JPOOL_USHORT1 (jcf, i);
427 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
428 tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
429 JPOOL_UTF_LENGTH (jcf, j));
430 this_class = lookup_class (class_name);
431 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
433 if (main_input_filename == NULL && jcf == main_jcf)
434 main_input_filename = input_filename;
436 jcf->cpool.data[i] = (jword) this_class;
437 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
442 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
445 get_class_constant (JCF *jcf , int i)
448 if (i <= 0 || i >= JPOOL_SIZE(jcf)
449 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
450 fatal ("bad class index %d", i);
452 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
454 int name_index = JPOOL_USHORT1 (jcf, i);
455 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
456 const char *name = JPOOL_UTF_DATA (jcf, name_index);
457 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
458 if (name[0] == '[') /* Handle array "classes". */
459 type = TREE_TYPE (parse_signature_string (name, nlength));
462 tree cname = unmangle_classname (name, nlength);
463 type = lookup_class (cname);
465 jcf->cpool.data[i] = (jword) type;
466 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
469 type = (tree) jcf->cpool.data[i];
473 /* Read a class with the fully qualified-name NAME.
474 Return 1 iff we read the requested file.
475 (It is still possible we failed if the file did not
476 define the class it is supposed to.) */
483 tree save_current_class = current_class;
484 char *save_input_filename = input_filename;
485 JCF *save_current_jcf = current_jcf;
487 if (current_jcf->read_state)
488 saved_pos = ftell (current_jcf->read_state);
490 push_obstacks (&permanent_obstack, &permanent_obstack);
492 /* Search in current zip first. */
493 if (find_in_current_zip (IDENTIFIER_POINTER (name), &jcf) == 0)
495 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
498 pop_obstacks (); /* FIXME: one pop_obstack() per function */
503 this_jcf.seen_in_zip = 0;
504 current_jcf = &this_jcf;
510 if (current_jcf->java_source)
513 java_parser_context_save_global ();
514 java_push_parser_context ();
515 input_filename = current_jcf->filename;
516 jcf_parse (current_jcf);
517 java_pop_parser_context (0);
518 java_parser_context_restore_global ();
521 if (!current_jcf->seen_in_zip)
522 JCF_FINISH (current_jcf);
525 current_class = save_current_class;
526 input_filename = save_input_filename;
527 current_jcf = save_current_jcf;
528 if (current_jcf->read_state)
529 fseek (current_jcf->read_state, saved_pos, SEEK_SET);
533 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
534 called from the parser, otherwise it's a RECORD_TYPE node. If
535 VERBOSE is 1, print error message on failure to load a class. */
537 /* Replace calls to load_class by having callers call read_class directly
538 - and then perhaps rename read_class to load_class. FIXME */
541 load_class (class_or_name, verbose)
547 /* class_or_name can be the name of the class we want to load */
548 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
549 name = class_or_name;
550 /* In some cases, it's a dependency that we process earlier that
552 else if (TREE_CODE (class_or_name) == TREE_LIST)
553 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
554 /* Or it's a type in the making */
556 name = DECL_NAME (TYPE_NAME (class_or_name));
558 if (read_class (name) == 0 && verbose)
559 fatal ("Cannot find file for class %s.", IDENTIFIER_POINTER (name));
562 /* Parse a source file when JCF refers to a source file. */
569 java_parser_context_save_global ();
570 java_push_parser_context ();
571 input_filename = current_jcf->filename;
572 file = get_identifier (input_filename);
573 if (!HAS_BEEN_ALREADY_PARSED_P (file))
575 if (!(finput = fopen (input_filename, "r")))
576 fatal ("input file `%s' just disappeared - jcf_parse_source",
578 parse_source_file (file);
580 fatal ("can't close input file `%s' stream - jcf_parse_source",
583 java_pop_parser_context (IS_A_COMMAND_LINE_FILENAME_P (file));
584 java_parser_context_restore_global ();
587 /* Parse the .class file JCF. */
596 if (jcf_parse_preamble (jcf) != 0)
597 fatal ("Not a valid Java .class file.\n");
598 code = jcf_parse_constant_pool (jcf);
600 fatal ("error while parsing constant pool");
601 code = verify_constant_pool (jcf);
603 fatal ("error in constant pool entry #%d\n", code);
605 jcf_parse_class (jcf);
606 if (main_class == NULL_TREE)
607 main_class = current_class;
608 if (! quiet_flag && TYPE_NAME (current_class))
609 fprintf (stderr, " %s %s",
610 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
611 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
612 if (CLASS_LOADED_P (current_class))
614 CLASS_LOADED_P (current_class) = 1;
616 for (i = 1; i < JPOOL_SIZE(jcf); i++)
618 switch (JPOOL_TAG (jcf, i))
621 get_class_constant (jcf, i);
626 code = jcf_parse_fields (jcf);
628 fatal ("error while parsing fields");
629 code = jcf_parse_methods (jcf);
631 fatal ("error while parsing methods");
632 code = jcf_parse_final_attributes (jcf);
634 fatal ("error while parsing final attributes");
636 /* The fields of class_type_node are already in correct order. */
637 if (current_class != class_type_node && current_class != object_type_node)
638 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
640 push_obstacks (&permanent_obstack, &permanent_obstack);
641 layout_class (current_class);
642 if (current_class == object_type_node)
643 layout_class_methods (object_type_node);
645 all_class_list = tree_cons (NULL_TREE,
646 TYPE_NAME (current_class), all_class_list );
648 /* And if we came accross inner classes, load them now. */
649 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (current_class)); current;
650 current = TREE_CHAIN (current))
651 load_class (DECL_NAME (TREE_PURPOSE (current)), 1);
657 init_outgoing_cpool ()
659 current_constant_pool_data_ref = NULL_TREE;
660 outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
661 bzero (outgoing_cpool, sizeof (struct CPool));
668 char *save_input_filename = input_filename;
669 int save_lineno = lineno;
671 java_layout_seen_class_methods ();
673 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
675 debug_start_source_file (input_filename);
676 init_outgoing_cpool ();
678 /* Currently we always have to emit calls to _Jv_InitClass when
679 compiling from class files. */
680 always_initialize_class_p = 1;
682 for ( method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class));
683 method != NULL_TREE; method = TREE_CHAIN (method))
685 JCF *jcf = current_jcf;
687 if (METHOD_NATIVE (method) || METHOD_ABSTRACT (method))
690 if (DECL_CODE_OFFSET (method) == 0)
692 error ("missing Code attribute");
697 if (DECL_LINENUMBERS_OFFSET (method))
700 register unsigned char *ptr;
701 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
702 linenumber_count = i = JCF_readu2 (jcf);
703 linenumber_table = ptr = jcf->read_ptr;
705 for (ptr += 2; --i >= 0; ptr += 4)
707 int line = GET_u2 (ptr);
708 /* Set initial lineno lineno to smallest linenumber.
709 * Needs to be set before init_function_start. */
710 if (lineno == 0 || line < lineno)
716 linenumber_table = NULL;
717 linenumber_count = 0;
720 start_java_method (method);
722 give_name_to_locals (jcf);
724 /* Actually generate code. */
725 expand_byte_code (jcf, method);
730 if (flag_emit_class_files)
731 write_classfile (current_class);
735 debug_end_source_file (save_lineno);
736 input_filename = save_input_filename;
737 lineno = save_lineno;
740 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
743 parse_source_file (file)
746 int save_error_count = java_error_count;
747 /* Mark the file as parsed */
748 HAS_BEEN_ALREADY_PARSED_P (file) = 1;
750 jcf_dependency_add_file (input_filename, 0);
752 lang_init_source (1); /* Error msgs have no method prototypes */
754 java_init_lex (); /* Initialize the parser */
755 java_parse_abort_on_error ();
757 java_parse (); /* Parse and build partial tree nodes. */
758 java_parse_abort_on_error ();
759 java_complete_class (); /* Parse unsatisfied class decl. */
760 java_parse_abort_on_error ();
761 java_check_circular_reference (); /* Check on circular references */
762 java_parse_abort_on_error ();
763 java_fix_constructors (); /* Fix the constructors */
764 java_parse_abort_on_error ();
765 java_reorder_fields (); /* Reorder the fields */
769 predefined_filename_p (node)
773 for (i = 0; i < predef_filenames_size; i++)
774 if (predef_filenames [i] == node)
782 int several_files = 0;
783 char *list = xstrdup (input_filename), *next;
784 tree node, current_file_list = NULL_TREE;
788 next = strchr (list, '&');
801 int len = strlen (list);
803 if (*list != '/' && several_files)
804 obstack_grow (&temporary_obstack, "./", 2);
806 obstack_grow0 (&temporary_obstack, list, len);
807 value = obstack_finish (&temporary_obstack);
809 /* Exclude file that we see twice on the command line. For
810 all files except {Class,Error,Object,RuntimeException,String,
811 Throwable}.java we can rely on maybe_get_identifier. For
812 these files, we need to do a linear search of
813 current_file_list. This search happens only for these
814 files, presumably only when we're recompiling libgcj. */
816 if ((id = maybe_get_identifier (value)))
818 if (predefined_filename_p (id))
821 for (c = current_file_list; c; c = TREE_CHAIN (c))
822 if (TREE_VALUE (c) == id)
831 char *saved_input_filename = input_filename;
832 input_filename = value;
833 warning ("source file seen twice on command line and will be compiled only once.");
834 input_filename = saved_input_filename;
838 node = get_identifier (value);
839 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
840 current_file_list = tree_cons (NULL_TREE, node,
848 current_jcf = main_jcf;
849 current_file_list = nreverse (current_file_list);
850 for (node = current_file_list; node; node = TREE_CHAIN (node))
852 tree name = TREE_VALUE (node);
854 /* Skip already parsed files */
855 if (HAS_BEEN_ALREADY_PARSED_P (name))
858 /* Close previous descriptor, if any */
859 if (main_jcf->read_state && fclose (main_jcf->read_state))
860 fatal ("failed to close input file `%s' - yyparse",
861 (main_jcf->filename ? main_jcf->filename : "<unknown>"));
863 /* Set jcf up and open a new file */
865 main_jcf->read_state = fopen (IDENTIFIER_POINTER (name), "rb");
866 if (main_jcf->read_state == NULL)
867 pfatal_with_name (IDENTIFIER_POINTER (name));
869 /* Set new input_filename and finput */
870 finput = main_jcf->read_state;
871 #ifdef IO_BUFFER_SIZE
872 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
873 _IOFBF, IO_BUFFER_SIZE);
875 input_filename = IDENTIFIER_POINTER (name);
876 main_jcf->filbuf = jcf_filbuf_from_stdio;
878 switch (jcf_figure_file_type (current_jcf))
881 parse_zip_file_entries ();
884 jcf_parse (current_jcf);
888 java_push_parser_context ();
889 java_parser_context_save_global ();
890 parse_source_file (name);
891 java_parser_context_restore_global ();
892 java_pop_parser_context (1);
897 java_expand_classes ();
898 if (!java_report_errors () && !flag_syntax_only)
899 emit_register_classes ();
903 static struct ZipFileCache *localToFile;
905 /* Process all class entries found in the zip file. */
907 parse_zip_file_entries (void)
909 struct ZipDirectory *zdir;
912 for (i = 0, zdir = (ZipDirectory *)localToFile->z.central_directory;
913 i < localToFile->z.count; i++, zdir = ZIPDIR_NEXT (zdir))
917 /* We don't need to consider those files. */
918 if (!zdir->size || !zdir->filename_offset)
921 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
922 current_jcf = TYPE_JCF (class);
923 current_class = class;
925 if ( !CLASS_LOADED_P (class))
927 fseek (current_jcf->read_state, current_jcf->zip_offset, SEEK_SET);
928 jcf_parse (current_jcf);
931 if (TYPE_SIZE (current_class) != error_mark_node)
933 input_filename = current_jcf->filename;
935 FREE (current_jcf->buffer); /* No longer necessary */
936 /* Note: there is a way to free this buffer right after a
937 class seen in a zip file has been parsed. The idea is the
938 set its jcf in such a way that buffer will be reallocated
939 the time the code for the class will be generated. FIXME. */
944 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
945 jcf up for further processing and link it to the created class. */
947 static void process_zip_dir()
952 for (i = 0, zdir = (ZipDirectory *)localToFile->z.central_directory;
953 i < localToFile->z.count; i++, zdir = ZIPDIR_NEXT (zdir))
955 char *class_name, *file_name, *class_name_in_zip_dir;
960 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
962 /* We choose to not to process entries with a zero size or entries
963 not bearing the .class extention. */
964 if (!zdir->size || !zdir->filename_offset ||
965 strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
968 /* So it will be skipped in parse_zip_file_entries */
973 class_name = ALLOC (zdir->filename_length+1-6);
974 file_name = ALLOC (zdir->filename_length+1);
975 jcf = ALLOC (sizeof (JCF));
978 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
979 class_name [zdir->filename_length-6] = '\0';
980 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
981 file_name [zdir->filename_length] = '\0';
983 for (j=0; class_name[j]; j++)
984 class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
986 /* Yes, we write back the true class name into the zip directory. */
987 strcpy (class_name_in_zip_dir, class_name);
988 zdir->filename_length = j;
989 class = lookup_class (get_identifier (class_name));
991 jcf->read_state = finput;
992 jcf->filbuf = jcf_filbuf_from_stdio;
993 jcf->seen_in_zip = 1;
994 jcf->java_source = 0;
995 jcf->zip_offset = zdir->filestart;
996 jcf->classname = class_name;
997 jcf->filename = file_name;
999 TYPE_JCF (class) = jcf;
1003 /* Lookup class NAME and figure whether is a class already found in the current
1006 DEFUN(find_in_current_zip, (name, length, jcf),
1007 const char *name AND JCF **jcf)
1010 tree class_name = maybe_get_identifier (name), class, icv;
1015 if (!(icv = IDENTIFIER_CLASS_VALUE (class_name)))
1018 class = TREE_TYPE (icv);
1020 /* Doesn't have jcf specific info ? It's not ours */
1021 if (!TYPE_JCF (class))
1024 *jcf = local_jcf = TYPE_JCF (class);
1025 fseek (local_jcf->read_state, local_jcf->zip_offset, SEEK_SET);
1029 /* Figure what kind of file we're dealing with */
1031 DEFUN(jcf_figure_file_type, (jcf),
1034 unsigned char magic_string[4];
1037 if (fread (magic_string, 1, 4, jcf->read_state) != 4)
1038 jcf_unexpected_eof (jcf, 4);
1040 fseek (jcf->read_state, 0L, SEEK_SET);
1041 magic = GET_u4 (magic_string);
1043 if (magic == 0xcafebabe)
1046 /* FIXME: is it a system file? */
1047 if (magic == (JCF_u4)ZIPMAGIC
1048 && !open_in_zip (jcf, input_filename, NULL, 0))
1050 localToFile = ALLOC (sizeof (struct ZipFileCache));
1051 bcopy ((PTR) SeenZipFiles, (PTR) localToFile, sizeof (struct ZipFileCache));
1052 process_zip_dir (); /* Register all the class defined there */