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 archive that provides main_class; the main input file. */
85 static struct JCF main_jcf[1];
87 static struct ZipFile *localToFile;
89 /* Declarations of some functions used here. */
90 static void handle_innerclass_attribute PARAMS ((int count, JCF *));
91 static tree give_name_to_class PARAMS ((JCF *jcf, int index));
92 static void parse_zip_file_entries PARAMS ((void));
93 static void process_zip_dir PARAMS ((FILE *));
94 static void parse_source_file_1 PARAMS ((tree, FILE *));
95 static void parse_source_file_2 PARAMS ((void));
96 static void jcf_parse_source PARAMS ((void));
97 static void parse_class_file PARAMS ((void));
98 static void set_source_filename PARAMS ((JCF *, int));
99 static int predefined_filename_p PARAMS ((tree));
100 static void ggc_mark_jcf PARAMS ((void**));
101 static void jcf_parse PARAMS ((struct JCF*));
102 static void load_inner_classes PARAMS ((tree));
104 /* Mark (for garbage collection) all the tree nodes that are
105 referenced from JCF's constant pool table. */
111 JCF *jcf = *(JCF**) elt;
114 CPool *cpool = &jcf->cpool;
115 int size = CPOOL_COUNT(cpool);
117 for (index = 1; index < size; index++)
119 int tag = JPOOL_TAG (jcf, index);
120 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
121 ggc_mark_tree ((tree) cpool->data[index]);
126 /* Handle "SourceFile" attribute. */
129 set_source_filename (jcf, index)
133 tree sfname_id = get_name_constant (jcf, index);
134 const char *sfname = IDENTIFIER_POINTER (sfname_id);
135 if (input_filename != NULL)
137 int old_len = strlen (input_filename);
138 int new_len = IDENTIFIER_LENGTH (sfname_id);
139 /* Use the current input_filename (derived from the class name)
140 if it has a directory prefix, but otherwise matches sfname. */
141 if (old_len > new_len
142 && strcmp (sfname, input_filename + old_len - new_len) == 0
143 && (input_filename[old_len - new_len - 1] == '/'
144 || input_filename[old_len - new_len - 1] == '\\'))
147 input_filename = sfname;
148 DECL_SOURCE_FILE (TYPE_NAME (current_class)) = sfname;
149 if (current_class == main_class) main_input_filename = input_filename;
152 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
154 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
155 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
156 current_class = give_name_to_class (jcf, THIS); \
157 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
159 #define HANDLE_CLASS_INTERFACE(INDEX) \
160 add_interface (current_class, get_class_constant (jcf, INDEX))
162 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
163 { int sig_index = SIGNATURE; \
164 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
165 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
166 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
167 if ((ACCESS_FLAGS) & ACC_FINAL) \
168 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
171 #define HANDLE_END_FIELDS() \
172 (current_field = NULL_TREE)
174 #define HANDLE_CONSTANTVALUE(INDEX) \
175 { tree constant; int index = INDEX; \
176 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
177 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
178 constant = build_utf8_ref (name); \
181 constant = get_constant (jcf, index); \
182 set_constant_value (current_field, constant); }
184 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
185 (current_method = add_method (current_class, ACCESS_FLAGS, \
186 get_name_constant (jcf, NAME), \
187 get_name_constant (jcf, SIGNATURE)), \
188 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
189 DECL_LINENUMBERS_OFFSET (current_method) = 0)
191 #define HANDLE_END_METHODS() \
192 { tree handle_type = CLASS_TO_HANDLE_TYPE (current_class); \
193 if (handle_type != current_class) layout_type (handle_type); \
194 current_method = NULL_TREE; }
196 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
197 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
198 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
199 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
200 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
202 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
204 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
205 JCF_SKIP (jcf, n * 10); }
207 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
209 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
210 JCF_SKIP (jcf, n * 4); }
212 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
215 tree list = DECL_FUNCTION_THROWS (current_method); \
218 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
219 list = tree_cons (NULL_TREE, thrown_class, list); \
221 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
224 /* Link seen inner classes to their outer context and register the
225 inner class to its outer context. They will be later loaded. */
226 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
227 handle_innerclass_attribute (COUNT, jcf)
229 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
231 /* Irrelevant decls should have been nullified by the END macros. \
232 We only handle the `Synthetic' attribute on method DECLs. \
233 DECL_ARTIFICIAL on fields is used for something else (See \
234 PUSH_FIELD in java-tree.h) */ \
235 if (current_method) \
236 DECL_ARTIFICIAL (current_method) = 1; \
239 #include "jcf-reader.c"
244 parse_signature (jcf, sig_index)
248 if (sig_index <= 0 || sig_index >= JPOOL_SIZE (jcf)
249 || JPOOL_TAG (jcf, sig_index) != CONSTANT_Utf8)
252 return parse_signature_string (JPOOL_UTF_DATA (jcf, sig_index),
253 JPOOL_UTF_LENGTH (jcf, sig_index));
259 /* Make identifier nodes long enough for the language-specific slots. */
260 set_identifier_size (sizeof (struct lang_identifier));
271 get_constant (jcf, index)
277 if (index <= 0 || index >= JPOOL_SIZE(jcf))
279 tag = JPOOL_TAG (jcf, index);
280 if ((tag & CONSTANT_ResolvedFlag) || tag == CONSTANT_Utf8)
281 return (tree) jcf->cpool.data[index];
284 case CONSTANT_Integer:
286 jint num = JPOOL_INT(jcf, index);
287 value = build_int_2 (num, num < 0 ? -1 : 0);
288 TREE_TYPE (value) = int_type_node;
293 jint num = JPOOL_INT (jcf, index);
294 HOST_WIDE_INT lo, hi;
295 lshift_double (num, 0, 32, 64, &lo, &hi, 0);
296 num = JPOOL_INT (jcf, index+1) & 0xffffffff;
297 add_double (lo, hi, num, 0, &lo, &hi);
298 value = build_int_2 (lo, hi);
299 TREE_TYPE (value) = long_type_node;
300 force_fit_type (value, 0);
303 #if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
306 jint num = JPOOL_INT(jcf, index);
308 #ifdef REAL_ARITHMETIC
309 d = REAL_VALUE_FROM_TARGET_SINGLE (num);
311 union { float f; jint i; } u;
315 value = build_real (float_type_node, d);
318 case CONSTANT_Double:
320 HOST_WIDE_INT num[2];
322 HOST_WIDE_INT lo, hi;
323 num[0] = JPOOL_INT (jcf, index);
324 lshift_double (num[0], 0, 32, 64, &lo, &hi, 0);
325 num[0] = JPOOL_INT (jcf, index+1);
326 add_double (lo, hi, num[0], 0, &lo, &hi);
327 if (FLOAT_WORDS_BIG_ENDIAN)
337 #ifdef REAL_ARITHMETIC
338 d = REAL_VALUE_FROM_TARGET_DOUBLE (num);
341 union { double d; jint i[2]; } u;
342 u.i[0] = (jint) num[0];
343 u.i[1] = (jint) num[1];
347 value = build_real (double_type_node, d);
350 #endif /* TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT */
351 case CONSTANT_String:
353 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index));
354 const char *utf8_ptr = IDENTIFIER_POINTER (name);
355 int utf8_len = IDENTIFIER_LENGTH (name);
356 unsigned char *str_ptr;
358 const unsigned char *utf8;
361 /* Count the number of Unicode characters in the string,
362 while checking for a malformed Utf8 string. */
363 utf8 = (const unsigned char *) utf8_ptr;
368 int char_len = UT8_CHAR_LENGTH (*utf8);
369 if (char_len < 0 || char_len > 3 || char_len > i)
370 fatal_error ("bad string constant");
377 /* Allocate a scratch buffer, convert the string to UCS2, and copy it
378 into the new space. */
379 str_ptr = (unsigned char *) alloca (2 * str_len);
381 utf8 = (const unsigned char *)utf8_ptr;
383 for (i = 0; i < str_len; i++)
386 int char_len = UT8_CHAR_LENGTH (*utf8);
390 char_value = *utf8++;
393 char_value = *utf8++ & 0x1F;
394 char_value = (char_value << 6) | (*utf8++ & 0x3F);
397 char_value = *utf8++ & 0x0F;
398 char_value = (char_value << 6) | (*utf8++ & 0x3F);
399 char_value = (char_value << 6) | (*utf8++ & 0x3F);
404 if (BYTES_BIG_ENDIAN)
406 *str++ = char_value >> 8;
407 *str++ = char_value & 0xFF;
411 *str++ = char_value & 0xFF;
412 *str++ = char_value >> 8;
415 value = build_string (str - str_ptr, str_ptr);
416 TREE_TYPE (value) = build_pointer_type (string_type_node);
422 JPOOL_TAG (jcf, index) = tag | CONSTANT_ResolvedFlag;
423 jcf->cpool.data [index] = (jword) value;
426 internal_error ("bad value constant type %d, index %d",
427 JPOOL_TAG (jcf, index), index);
431 get_name_constant (jcf, index)
435 tree name = get_constant (jcf, index);
437 if (TREE_CODE (name) != IDENTIFIER_NODE)
443 /* Handle reading innerclass attributes. If a non zero entry (denoting
444 a non anonymous entry) is found, We augment the inner class list of
445 the outer context with the newly resolved innerclass. */
448 handle_innerclass_attribute (count, jcf)
455 /* Read inner_class_info_index. This may be 0 */
456 int icii = JCF_readu2 (jcf);
457 /* Read outer_class_info_index. If the innerclasses attribute
458 entry isn't a member (like an inner class) the value is 0. */
459 int ocii = JCF_readu2 (jcf);
460 /* Read inner_name_index. If the class we're dealing with is
461 an annonymous class, it must be 0. */
462 int ini = JCF_readu2 (jcf);
463 /* If icii is 0, don't try to read the class. */
466 tree class = get_class_constant (jcf, icii);
467 tree decl = TYPE_NAME (class);
468 /* Skip reading further if ocii is null */
469 if (DECL_P (decl) && !CLASS_COMPLETE_P (decl) && ocii)
471 tree outer = TYPE_NAME (get_class_constant (jcf, ocii));
472 tree alias = (ini ? get_name_constant (jcf, ini) : NULL_TREE);
473 DECL_CONTEXT (decl) = outer;
474 DECL_INNER_CLASS_LIST (outer) =
475 tree_cons (decl, alias, DECL_INNER_CLASS_LIST (outer));
476 CLASS_COMPLETE_P (decl) = 1;
484 give_name_to_class (jcf, i)
488 if (i <= 0 || i >= JPOOL_SIZE (jcf)
489 || JPOOL_TAG (jcf, i) != CONSTANT_Class)
494 int j = JPOOL_USHORT1 (jcf, i);
495 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
496 tree class_name = unmangle_classname (JPOOL_UTF_DATA (jcf, j),
497 JPOOL_UTF_LENGTH (jcf, j));
498 this_class = lookup_class (class_name);
499 input_filename = DECL_SOURCE_FILE (TYPE_NAME (this_class));
501 if (main_input_filename == NULL && jcf == main_jcf)
502 main_input_filename = input_filename;
504 jcf->cpool.data[i] = (jword) this_class;
505 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
510 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
513 get_class_constant (JCF *jcf , int i)
516 if (i <= 0 || i >= JPOOL_SIZE (jcf)
517 || (JPOOL_TAG (jcf, i) & ~CONSTANT_ResolvedFlag) != CONSTANT_Class)
520 if (JPOOL_TAG (jcf, i) != CONSTANT_ResolvedClass)
522 int name_index = JPOOL_USHORT1 (jcf, i);
523 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
524 const char *name = JPOOL_UTF_DATA (jcf, name_index);
525 int nlength = JPOOL_UTF_LENGTH (jcf, name_index);
527 if (name[0] == '[') /* Handle array "classes". */
528 type = TREE_TYPE (parse_signature_string (name, nlength));
531 tree cname = unmangle_classname (name, nlength);
532 type = lookup_class (cname);
534 jcf->cpool.data[i] = (jword) type;
535 JPOOL_TAG (jcf, i) = CONSTANT_ResolvedClass;
538 type = (tree) jcf->cpool.data[i];
542 /* Read a class with the fully qualified-name NAME.
543 Return 1 iff we read the requested file.
544 (It is still possible we failed if the file did not
545 define the class it is supposed to.) */
553 tree save_current_class = current_class;
554 const char *save_input_filename = input_filename;
555 JCF *save_current_jcf = current_jcf;
557 if ((icv = IDENTIFIER_CLASS_VALUE (name)) != NULL_TREE)
559 class = TREE_TYPE (icv);
560 jcf = TYPE_JCF (class);
567 this_jcf.zipd = NULL;
569 if (find_class (IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name),
576 if (current_jcf->java_source)
579 java_parser_context_save_global ();
580 java_push_parser_context ();
581 input_filename = current_jcf->filename;
582 current_class = class;
583 if (JCF_SEEN_IN_ZIP (current_jcf))
584 read_zip_member(current_jcf, current_jcf->zipd, current_jcf->zipd->zipf);
585 jcf_parse (current_jcf);
586 load_inner_classes (current_class);
587 java_pop_parser_context (0);
588 java_parser_context_restore_global ();
591 if (! JCF_SEEN_IN_ZIP (current_jcf))
592 JCF_FINISH (current_jcf);
594 current_class = save_current_class;
595 input_filename = save_input_filename;
596 current_jcf = save_current_jcf;
600 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
601 called from the parser, otherwise it's a RECORD_TYPE node. If
602 VERBOSE is 1, print error message on failure to load a class. */
604 /* Replace calls to load_class by having callers call read_class directly
605 - and then perhaps rename read_class to load_class. FIXME */
608 load_class (class_or_name, verbose)
614 /* class_or_name can be the name of the class we want to load */
615 if (TREE_CODE (class_or_name) == IDENTIFIER_NODE)
616 name = class_or_name;
617 /* In some cases, it's a dependency that we process earlier that
619 else if (TREE_CODE (class_or_name) == TREE_LIST)
620 name = TYPE_NAME (TREE_PURPOSE (class_or_name));
621 /* Or it's a type in the making */
623 name = DECL_NAME (TYPE_NAME (class_or_name));
625 if (read_class (name) == 0 && verbose)
626 error ("Cannot find file for class %s.", IDENTIFIER_POINTER (name));
629 /* Parse a source file when JCF refers to a source file. */
637 java_parser_context_save_global ();
638 java_push_parser_context ();
639 BUILD_FILENAME_IDENTIFIER_NODE (file, current_jcf->filename);
640 if (wfl_operator == NULL_TREE)
641 wfl_operator = build_expr_wfl (NULL_TREE, NULL, 0, 0);
642 EXPR_WFL_FILENAME_NODE (wfl_operator) = file;
643 input_filename = ggc_strdup (current_jcf->filename);
644 current_class = NULL_TREE;
645 current_function_decl = NULL_TREE;
646 if (!HAS_BEEN_ALREADY_PARSED_P (file))
648 if (!(finput = fopen (input_filename, "r")))
649 fatal_io_error ("can't reopen %s", input_filename);
650 parse_source_file_1 (file, finput);
651 parse_source_file_2 ();
653 fatal_io_error ("can't close %s", input_filename);
655 java_pop_parser_context (IS_A_COMMAND_LINE_FILENAME_P (file));
656 java_parser_context_restore_global ();
659 /* Parse the .class file JCF. */
668 if (jcf_parse_preamble (jcf) != 0)
669 fatal_error ("not a valid Java .class file");
670 code = jcf_parse_constant_pool (jcf);
672 fatal_error ("error while parsing constant pool");
673 code = verify_constant_pool (jcf);
675 fatal_error ("error in constant pool entry #%d\n", code);
677 jcf_parse_class (jcf);
678 if (main_class == NULL_TREE)
679 main_class = current_class;
680 if (! quiet_flag && TYPE_NAME (current_class))
681 fprintf (stderr, " %s %s",
682 (jcf->access_flags & ACC_INTERFACE) ? "interface" : "class",
683 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
684 if (CLASS_LOADED_P (current_class))
686 CLASS_LOADED_P (current_class) = 1;
688 for (i = 1; i < JPOOL_SIZE(jcf); i++)
690 switch (JPOOL_TAG (jcf, i))
693 get_class_constant (jcf, i);
698 code = jcf_parse_fields (jcf);
700 fatal_error ("error while parsing fields");
701 code = jcf_parse_methods (jcf);
703 fatal_error ("error while parsing methods");
704 code = jcf_parse_final_attributes (jcf);
706 fatal_error ("error while parsing final attributes");
708 /* The fields of class_type_node are already in correct order. */
709 if (current_class != class_type_node && current_class != object_type_node)
710 TYPE_FIELDS (current_class) = nreverse (TYPE_FIELDS (current_class));
712 layout_class (current_class);
713 if (current_class == object_type_node)
714 layout_class_methods (object_type_node);
716 all_class_list = tree_cons (NULL_TREE,
717 TYPE_NAME (current_class), all_class_list );
720 /* If we came across inner classes, load them now. */
722 load_inner_classes (cur_class)
726 for (current = DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class)); current;
727 current = TREE_CHAIN (current))
729 tree name = DECL_NAME (TREE_PURPOSE (current));
730 tree decl = IDENTIFIER_GLOBAL_VALUE (name);
731 if (decl && ! CLASS_LOADED_P (TREE_TYPE (decl))
732 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl)))
733 load_class (name, 1);
738 init_outgoing_cpool ()
740 current_constant_pool_data_ref = NULL_TREE;
741 outgoing_cpool = (struct CPool *)xmalloc (sizeof (struct CPool));
742 memset (outgoing_cpool, 0, sizeof (struct CPool));
749 const char *save_input_filename = input_filename;
750 int save_lineno = lineno;
752 java_layout_seen_class_methods ();
754 input_filename = DECL_SOURCE_FILE (TYPE_NAME (current_class));
756 debug_start_source_file (input_filename);
757 init_outgoing_cpool ();
759 /* Currently we always have to emit calls to _Jv_InitClass when
760 compiling from class files. */
761 always_initialize_class_p = 1;
763 for ( method = TYPE_METHODS (CLASS_TO_HANDLE_TYPE (current_class));
764 method != NULL_TREE; method = TREE_CHAIN (method))
766 JCF *jcf = current_jcf;
768 if (METHOD_ABSTRACT (method))
771 if (METHOD_NATIVE (method))
775 DECL_MAX_LOCALS (method)
776 = list_length (TYPE_ARG_TYPES (TREE_TYPE (method)));
777 start_java_method (method);
778 give_name_to_locals (jcf);
779 expand_expr_stmt (build_jni_stub (method));
784 if (DECL_CODE_OFFSET (method) == 0)
786 error ("missing Code attribute");
791 if (DECL_LINENUMBERS_OFFSET (method))
794 register unsigned char *ptr;
795 JCF_SEEK (jcf, DECL_LINENUMBERS_OFFSET (method));
796 linenumber_count = i = JCF_readu2 (jcf);
797 linenumber_table = ptr = jcf->read_ptr;
799 for (ptr += 2; --i >= 0; ptr += 4)
801 int line = GET_u2 (ptr);
802 /* Set initial lineno lineno to smallest linenumber.
803 * Needs to be set before init_function_start. */
804 if (lineno == 0 || line < lineno)
810 linenumber_table = NULL;
811 linenumber_count = 0;
814 start_java_method (method);
816 note_instructions (jcf, method);
818 give_name_to_locals (jcf);
820 /* Actually generate code. */
821 expand_byte_code (jcf, method);
826 if (flag_emit_class_files)
827 write_classfile (current_class);
831 debug_end_source_file (save_lineno);
832 input_filename = save_input_filename;
833 lineno = save_lineno;
836 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
839 parse_source_file_1 (file, finput)
843 int save_error_count = java_error_count;
844 /* Mark the file as parsed */
845 HAS_BEEN_ALREADY_PARSED_P (file) = 1;
847 jcf_dependency_add_file (input_filename, 0);
849 lang_init_source (1); /* Error msgs have no method prototypes */
851 /* There's no point in trying to find the current encoding unless we
852 are going to do something intelligent with it -- hence the test
855 #ifdef HAVE_NL_LANGINFO
856 setlocale (LC_CTYPE, "");
857 if (current_encoding == NULL)
858 current_encoding = nl_langinfo (CODESET);
859 #endif /* HAVE_NL_LANGINFO */
860 #endif /* HAVE_ICONV */
861 if (current_encoding == NULL || *current_encoding == '\0')
862 current_encoding = DEFAULT_ENCODING;
864 /* Initialize the parser */
865 java_init_lex (finput, current_encoding);
866 java_parse_abort_on_error ();
868 java_parse (); /* Parse and build partial tree nodes. */
869 java_parse_abort_on_error ();
872 /* Process a parsed source file, resolving names etc. */
875 parse_source_file_2 ()
877 int save_error_count = java_error_count;
878 java_complete_class (); /* Parse unsatisfied class decl. */
879 java_parse_abort_on_error ();
880 java_check_circular_reference (); /* Check on circular references */
881 java_parse_abort_on_error ();
882 java_fix_constructors (); /* Fix the constructors */
883 java_parse_abort_on_error ();
884 java_reorder_fields (); /* Reorder the fields */
888 predefined_filename_p (node)
892 for (i = 0; i < PREDEF_FILENAMES_SIZE; i++)
893 if (predef_filenames [i] == node)
901 int filename_count = 0;
906 if (flag_filelist_file)
909 finput = fopen (input_filename, "r");
911 fatal_io_error ("can't open %s", input_filename);
912 list = xmalloc(avail);
920 avail = 2 * (count + avail);
921 list = xrealloc (list, avail);
923 avail = avail - count;
925 /* Subtract to to guarantee space for final '\0'. */
926 count = fread (next, 1, avail - 1, finput);
930 fatal_io_error ("error closing %s", input_filename);
941 list = xstrdup (input_filename);
945 for (next = list; ; )
948 if (ch == '\n' || ch == '\r' || ch == '\t' || ch == ' '
949 || ch == '&' /* FIXME */)
977 int len = strlen (list);
979 if (*list != '/' && filename_count > 0)
980 obstack_grow (&temporary_obstack, "./", 2);
982 obstack_grow0 (&temporary_obstack, list, len);
983 value = obstack_finish (&temporary_obstack);
987 /* Exclude file that we see twice on the command line. For
988 all files except {Class,Error,Object,RuntimeException,String,
989 Throwable}.java we can rely on maybe_get_identifier. For
990 these files, we need to do a linear search of
991 current_file_list. This search happens only for these
992 files, presumably only when we're recompiling libgcj. */
994 if ((id = maybe_get_identifier (value)))
996 if (predefined_filename_p (id))
999 for (c = current_file_list; c; c = TREE_CHAIN (c))
1000 if (TREE_VALUE (c) == id)
1009 const char *saved_input_filename = input_filename;
1010 input_filename = value;
1011 warning ("source file seen twice on command line and will be compiled only once.");
1012 input_filename = saved_input_filename;
1016 BUILD_FILENAME_IDENTIFIER_NODE (node, value);
1017 IS_A_COMMAND_LINE_FILENAME_P (node) = 1;
1018 current_file_list = tree_cons (NULL_TREE, node,
1026 if (filename_count == 0)
1027 warning ("no input file specified");
1029 current_jcf = main_jcf;
1030 current_file_list = nreverse (current_file_list);
1031 for (node = current_file_list; node; node = TREE_CHAIN (node))
1033 unsigned char magic_string[4];
1035 tree name = TREE_VALUE (node);
1037 /* Skip already parsed files */
1038 if (HAS_BEEN_ALREADY_PARSED_P (name))
1041 /* Close previous descriptor, if any */
1042 if (finput && fclose (finput))
1043 fatal_io_error ("can't close input file %s", main_input_filename);
1045 finput = fopen (IDENTIFIER_POINTER (name), "rb");
1047 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name));
1049 #ifdef IO_BUFFER_SIZE
1050 setvbuf (finput, (char *) xmalloc (IO_BUFFER_SIZE),
1051 _IOFBF, IO_BUFFER_SIZE);
1053 input_filename = IDENTIFIER_POINTER (name);
1055 /* Figure what kind of file we're dealing with */
1056 if (fread (magic_string, 1, 4, finput) != 4)
1057 fatal_io_error ("Premature end of input file %s",
1058 IDENTIFIER_POINTER (name));
1059 fseek (finput, 0L, SEEK_SET);
1060 magic = GET_u4 (magic_string);
1061 if (magic == 0xcafebabe)
1063 CLASS_FILE_P (node) = 1;
1064 current_jcf = ALLOC (sizeof (JCF));
1065 JCF_ZERO (current_jcf);
1066 current_jcf->read_state = finput;
1067 current_jcf->filbuf = jcf_filbuf_from_stdio;
1068 jcf_parse (current_jcf);
1069 TYPE_JCF (current_class) = current_jcf;
1070 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1071 TREE_PURPOSE (node) = current_class;
1073 else if (magic == (JCF_u4)ZIPMAGIC)
1075 ZIP_FILE_P (node) = 1;
1076 JCF_ZERO (main_jcf);
1077 main_jcf->read_state = finput;
1078 main_jcf->filbuf = jcf_filbuf_from_stdio;
1079 if (open_in_zip (main_jcf, input_filename, NULL, 0) < 0)
1080 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name));
1081 localToFile = SeenZipFiles;
1082 /* Register all the class defined there. */
1083 process_zip_dir (main_jcf->read_state);
1084 parse_zip_file_entries ();
1087 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1092 JAVA_FILE_P (node) = 1;
1093 java_push_parser_context ();
1094 java_parser_context_save_global ();
1095 parse_source_file_1 (name, finput);
1096 java_parser_context_restore_global ();
1097 java_pop_parser_context (1);
1101 for (ctxp = ctxp_for_generation; ctxp; ctxp = ctxp->next)
1103 input_filename = ctxp->filename;
1104 parse_source_file_2 ();
1106 for (node = current_file_list; node; node = TREE_CHAIN (node))
1108 input_filename = IDENTIFIER_POINTER (TREE_VALUE (node));
1109 if (CLASS_FILE_P (node))
1111 current_class = TREE_PURPOSE (node);
1112 current_jcf = TYPE_JCF (current_class);
1113 load_inner_classes (current_class);
1114 parse_class_file ();
1117 input_filename = main_input_filename;
1119 java_expand_classes ();
1120 if (!java_report_errors () && !flag_syntax_only)
1121 emit_register_classes ();
1125 /* Process all class entries found in the zip file. */
1127 parse_zip_file_entries (void)
1129 struct ZipDirectory *zdir;
1132 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1133 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1137 /* We don't need to consider those files. */
1138 if (!zdir->size || !zdir->filename_offset)
1141 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir)));
1142 current_jcf = TYPE_JCF (class);
1143 current_class = class;
1145 if ( !CLASS_LOADED_P (class))
1147 read_zip_member(current_jcf, zdir, localToFile);
1148 jcf_parse (current_jcf);
1149 load_inner_classes (current_class);
1152 if (TYPE_SIZE (current_class) != error_mark_node)
1154 input_filename = current_jcf->filename;
1155 parse_class_file ();
1156 FREE (current_jcf->buffer); /* No longer necessary */
1157 /* Note: there is a way to free this buffer right after a
1158 class seen in a zip file has been parsed. The idea is the
1159 set its jcf in such a way that buffer will be reallocated
1160 the time the code for the class will be generated. FIXME. */
1165 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1166 jcf up for further processing and link it to the created class. */
1169 process_zip_dir (FILE *finput)
1174 for (i = 0, zdir = (ZipDirectory *)localToFile->central_directory;
1175 i < localToFile->count; i++, zdir = ZIPDIR_NEXT (zdir))
1177 char *class_name, *file_name, *class_name_in_zip_dir;
1182 class_name_in_zip_dir = ZIPDIR_FILENAME (zdir);
1184 /* We choose to not to process entries with a zero size or entries
1185 not bearing the .class extention. */
1186 if (!zdir->size || !zdir->filename_offset ||
1187 strncmp (&class_name_in_zip_dir[zdir->filename_length-6],
1190 /* So it will be skipped in parse_zip_file_entries */
1195 class_name = ALLOC (zdir->filename_length+1-6);
1196 file_name = ALLOC (zdir->filename_length+1);
1197 jcf = ALLOC (sizeof (JCF));
1200 strncpy (class_name, class_name_in_zip_dir, zdir->filename_length-6);
1201 class_name [zdir->filename_length-6] = '\0';
1202 strncpy (file_name, class_name_in_zip_dir, zdir->filename_length);
1203 file_name [zdir->filename_length] = '\0';
1205 for (j=0; class_name[j]; j++)
1206 class_name [j] = (class_name [j] == '/' ? '.' : class_name [j]);
1208 /* Yes, we write back the true class name into the zip directory. */
1209 strcpy (class_name_in_zip_dir, class_name);
1210 zdir->filename_length = j;
1211 class = lookup_class (get_identifier (class_name));
1213 jcf->read_state = finput;
1214 jcf->filbuf = jcf_filbuf_from_stdio;
1215 jcf->java_source = 0;
1216 jcf->classname = class_name;
1217 jcf->filename = file_name;
1220 TYPE_JCF (class) = jcf;
1224 /* Initialization. */
1229 /* Register roots with the garbage collector. */
1230 ggc_add_tree_root (parse_roots, sizeof (parse_roots) / sizeof(tree));
1232 ggc_add_root (¤t_jcf, 1, sizeof (JCF), (void (*)(void *))ggc_mark_jcf);