1 /* Parser for Java(TM) .class files.
2 Copyright (C) 1996, 1998, 1999, 2000, 2001, 2002, 2003
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"
49 #ifdef HAVE_NL_LANGINFO
53 /* A CONSTANT_Utf8 element is converted to an IDENTIFIER_NODE at parse time. */
54 #define JPOOL_UTF(JCF, INDEX) CPOOL_UTF(&(JCF)->cpool, INDEX)
55 #define JPOOL_UTF_LENGTH(JCF, INDEX) IDENTIFIER_LENGTH (JPOOL_UTF (JCF, INDEX))
56 #define JPOOL_UTF_DATA(JCF, INDEX) \
57 ((const unsigned char *) IDENTIFIER_POINTER (JPOOL_UTF (JCF, INDEX)))
58 #define HANDLE_CONSTANT_Utf8(JCF, INDEX, LENGTH) \
60 unsigned char save; unsigned char *text; \
61 JCF_FILL (JCF, (LENGTH)+1); /* Make sure we read 1 byte beyond string. */ \
62 text = (JCF)->read_ptr; \
63 save = text[LENGTH]; \
65 (JCF)->cpool.data[INDEX] = (jword) get_identifier (text); \
66 text[LENGTH] = save; \
67 JCF_SKIP (JCF, LENGTH); } while (0)
71 extern struct obstack temporary_obstack
;
73 /* Set to nonzero value in order to emit class initilization code
74 before static field references. */
75 extern int always_initialize_class_p
;
77 static GTY(()) tree parse_roots
[3];
79 /* The FIELD_DECL for the current field. */
80 #define current_field parse_roots[0]
82 /* The METHOD_DECL for the current method. */
83 #define current_method parse_roots[1]
85 /* A list of file names. */
86 #define current_file_list parse_roots[2]
88 /* The Java archive that provides main_class; the main input file. */
89 static struct JCF main_jcf
[1];
91 static struct ZipFile
*localToFile
;
93 /* Declarations of some functions used here. */
94 static void handle_innerclass_attribute
PARAMS ((int count
, JCF
*));
95 static tree give_name_to_class
PARAMS ((JCF
*jcf
, int index
));
96 static void parse_zip_file_entries
PARAMS ((void));
97 static void process_zip_dir
PARAMS ((FILE *));
98 static void parse_source_file_1
PARAMS ((tree
, FILE *));
99 static void parse_source_file_2
PARAMS ((void));
100 static void parse_source_file_3
PARAMS ((void));
101 static void parse_class_file
PARAMS ((void));
102 static void set_source_filename
PARAMS ((JCF
*, int));
103 static void ggc_mark_jcf
PARAMS ((void**));
104 static void jcf_parse
PARAMS ((struct JCF
*));
105 static void load_inner_classes
PARAMS ((tree
));
107 /* Mark (for garbage collection) all the tree nodes that are
108 referenced from JCF's constant pool table. Do that only if the JCF
109 hasn't been marked finished. */
115 JCF
*jcf
= *(JCF
**) elt
;
116 if (jcf
!= NULL
&& !jcf
->finished
)
118 CPool
*cpool
= &jcf
->cpool
;
119 int size
= CPOOL_COUNT(cpool
);
121 for (index
= 1; index
< size
; index
++)
123 int tag
= JPOOL_TAG (jcf
, index
);
124 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
125 ggc_mark_tree ((tree
) cpool
->data
[index
]);
130 /* Handle "SourceFile" attribute. */
133 set_source_filename (jcf
, index
)
137 tree sfname_id
= get_name_constant (jcf
, index
);
138 const char *sfname
= IDENTIFIER_POINTER (sfname_id
);
139 if (input_filename
!= NULL
)
141 int old_len
= strlen (input_filename
);
142 int new_len
= IDENTIFIER_LENGTH (sfname_id
);
143 /* Use the current input_filename (derived from the class name)
144 if it has a directory prefix, but otherwise matches sfname. */
145 if (old_len
> new_len
146 && strcmp (sfname
, input_filename
+ old_len
- new_len
) == 0
147 && (input_filename
[old_len
- new_len
- 1] == '/'
148 || input_filename
[old_len
- new_len
- 1] == '\\'))
151 input_filename
= sfname
;
152 DECL_SOURCE_FILE (TYPE_NAME (current_class
)) = sfname
;
153 if (current_class
== main_class
) main_input_filename
= input_filename
;
156 #define HANDLE_SOURCEFILE(INDEX) set_source_filename (jcf, INDEX)
158 #define HANDLE_CLASS_INFO(ACCESS_FLAGS, THIS, SUPER, INTERFACES_COUNT) \
159 { tree super_class = SUPER==0 ? NULL_TREE : get_class_constant (jcf, SUPER); \
160 current_class = give_name_to_class (jcf, THIS); \
161 set_super_info (ACCESS_FLAGS, current_class, super_class, INTERFACES_COUNT);}
163 #define HANDLE_CLASS_INTERFACE(INDEX) \
164 add_interface (current_class, get_class_constant (jcf, INDEX))
166 #define HANDLE_START_FIELD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
167 { int sig_index = SIGNATURE; \
168 current_field = add_field (current_class, get_name_constant (jcf, NAME), \
169 parse_signature (jcf, sig_index), ACCESS_FLAGS); \
170 set_java_signature (TREE_TYPE (current_field), JPOOL_UTF (jcf, sig_index)); \
171 if ((ACCESS_FLAGS) & ACC_FINAL) \
172 MAYBE_CREATE_VAR_LANG_DECL_SPECIFIC (current_field); \
175 #define HANDLE_END_FIELDS() \
176 (current_field = NULL_TREE)
178 #define HANDLE_CONSTANTVALUE(INDEX) \
179 { tree constant; int index = INDEX; \
180 if (! flag_emit_class_files && JPOOL_TAG (jcf, index) == CONSTANT_String) { \
181 tree name = get_name_constant (jcf, JPOOL_USHORT1 (jcf, index)); \
182 constant = build_utf8_ref (name); \
185 constant = get_constant (jcf, index); \
186 set_constant_value (current_field, constant); }
188 #define HANDLE_METHOD(ACCESS_FLAGS, NAME, SIGNATURE, ATTRIBUTE_COUNT) \
189 (current_method = add_method (current_class, ACCESS_FLAGS, \
190 get_name_constant (jcf, NAME), \
191 get_name_constant (jcf, SIGNATURE)), \
192 DECL_LOCALVARIABLES_OFFSET (current_method) = 0, \
193 DECL_LINENUMBERS_OFFSET (current_method) = 0)
195 #define HANDLE_END_METHODS() \
196 { current_method = NULL_TREE; }
198 #define HANDLE_CODE_ATTRIBUTE(MAX_STACK, MAX_LOCALS, CODE_LENGTH) \
199 { DECL_MAX_STACK (current_method) = (MAX_STACK); \
200 DECL_MAX_LOCALS (current_method) = (MAX_LOCALS); \
201 DECL_CODE_LENGTH (current_method) = (CODE_LENGTH); \
202 DECL_CODE_OFFSET (current_method) = JCF_TELL (jcf); }
204 #define HANDLE_LOCALVARIABLETABLE_ATTRIBUTE(COUNT) \
206 DECL_LOCALVARIABLES_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
207 JCF_SKIP (jcf, n * 10); }
209 #define HANDLE_LINENUMBERTABLE_ATTRIBUTE(COUNT) \
211 DECL_LINENUMBERS_OFFSET (current_method) = JCF_TELL (jcf) - 2; \
212 JCF_SKIP (jcf, n * 4); }
214 #define HANDLE_EXCEPTIONS_ATTRIBUTE(COUNT) \
217 tree list = DECL_FUNCTION_THROWS (current_method); \
220 tree thrown_class = get_class_constant (jcf, JCF_readu2 (jcf)); \
221 list = tree_cons (NULL_TREE, thrown_class, list); \
223 DECL_FUNCTION_THROWS (current_method) = nreverse (list); \
226 /* Link seen inner classes to their outer context and register the
227 inner class to its outer context. They will be later loaded. */
228 #define HANDLE_INNERCLASSES_ATTRIBUTE(COUNT) \
229 handle_innerclass_attribute (COUNT, jcf)
231 #define HANDLE_SYNTHETIC_ATTRIBUTE() \
233 /* Irrelevant decls should have been nullified by the END macros. \
234 We only handle the `Synthetic' attribute on method DECLs. \
235 DECL_ARTIFICIAL on fields is used for something else (See \
236 PUSH_FIELD in java-tree.h) */ \
237 if (current_method) \
238 DECL_ARTIFICIAL (current_method) = 1; \
241 #define HANDLE_GCJCOMPILED_ATTRIBUTE() \
243 if (current_class == object_type_node) \
244 jcf->right_zip = 1; \
247 #include "jcf-reader.c"
250 parse_signature (jcf
, sig_index
)
254 if (sig_index
<= 0 || sig_index
>= JPOOL_SIZE (jcf
)
255 || JPOOL_TAG (jcf
, sig_index
) != CONSTANT_Utf8
)
258 return parse_signature_string (JPOOL_UTF_DATA (jcf
, sig_index
),
259 JPOOL_UTF_LENGTH (jcf
, sig_index
));
263 get_constant (jcf
, index
)
269 if (index
<= 0 || index
>= JPOOL_SIZE(jcf
))
271 tag
= JPOOL_TAG (jcf
, index
);
272 if ((tag
& CONSTANT_ResolvedFlag
) || tag
== CONSTANT_Utf8
)
273 return (tree
) jcf
->cpool
.data
[index
];
276 case CONSTANT_Integer
:
278 jint num
= JPOOL_INT(jcf
, index
);
279 value
= build_int_2 (num
, num
< 0 ? -1 : 0);
280 TREE_TYPE (value
) = int_type_node
;
285 unsigned HOST_WIDE_INT num
= JPOOL_UINT (jcf
, index
);
286 HOST_WIDE_INT lo
, hi
;
287 lshift_double (num
, 0, 32, 64, &lo
, &hi
, 0);
288 num
= JPOOL_UINT (jcf
, index
+1);
289 add_double (lo
, hi
, num
, 0, &lo
, &hi
);
290 value
= build_int_2 (lo
, hi
);
291 TREE_TYPE (value
) = long_type_node
;
292 force_fit_type (value
, 0);
298 jint num
= JPOOL_INT(jcf
, index
);
302 real_from_target_fmt (&d
, &buf
, &ieee_single_format
);
303 value
= build_real (float_type_node
, d
);
307 case CONSTANT_Double
:
312 hi
= JPOOL_UINT (jcf
, index
);
313 lo
= JPOOL_UINT (jcf
, index
+1);
315 if (FLOAT_WORDS_BIG_ENDIAN
)
316 buf
[0] = hi
, buf
[1] = lo
;
318 buf
[0] = lo
, buf
[1] = hi
;
320 real_from_target_fmt (&d
, buf
, &ieee_double_format
);
321 value
= build_real (double_type_node
, d
);
325 case CONSTANT_String
:
327 tree name
= get_name_constant (jcf
, JPOOL_USHORT1 (jcf
, index
));
328 const char *utf8_ptr
= IDENTIFIER_POINTER (name
);
329 int utf8_len
= IDENTIFIER_LENGTH (name
);
330 const unsigned char *utf8
;
333 /* Check for a malformed Utf8 string. */
334 utf8
= (const unsigned char *) utf8_ptr
;
338 int char_len
= UT8_CHAR_LENGTH (*utf8
);
339 if (char_len
< 0 || char_len
> 3 || char_len
> i
)
340 fatal_error ("bad string constant");
346 /* Allocate a new string value. */
347 value
= build_string (utf8_len
, utf8_ptr
);
348 TREE_TYPE (value
) = build_pointer_type (string_type_node
);
354 JPOOL_TAG (jcf
, index
) = tag
| CONSTANT_ResolvedFlag
;
355 jcf
->cpool
.data
[index
] = (jword
) value
;
358 internal_error ("bad value constant type %d, index %d",
359 JPOOL_TAG (jcf
, index
), index
);
363 get_name_constant (jcf
, index
)
367 tree name
= get_constant (jcf
, index
);
369 if (TREE_CODE (name
) != IDENTIFIER_NODE
)
375 /* Handle reading innerclass attributes. If a nonzero entry (denoting
376 a non anonymous entry) is found, We augment the inner class list of
377 the outer context with the newly resolved innerclass. */
380 handle_innerclass_attribute (count
, jcf
)
387 /* Read inner_class_info_index. This may be 0 */
388 int icii
= JCF_readu2 (jcf
);
389 /* Read outer_class_info_index. If the innerclasses attribute
390 entry isn't a member (like an inner class) the value is 0. */
391 int ocii
= JCF_readu2 (jcf
);
392 /* Read inner_name_index. If the class we're dealing with is
393 an annonymous class, it must be 0. */
394 int ini
= JCF_readu2 (jcf
);
395 /* Read the access flag. */
396 int acc
= JCF_readu2 (jcf
);
397 /* If icii is 0, don't try to read the class. */
400 tree
class = get_class_constant (jcf
, icii
);
401 tree decl
= TYPE_NAME (class);
402 /* Skip reading further if ocii is null */
403 if (DECL_P (decl
) && !CLASS_COMPLETE_P (decl
) && ocii
)
405 tree outer
= TYPE_NAME (get_class_constant (jcf
, ocii
));
406 tree alias
= (ini
? get_name_constant (jcf
, ini
) : NULL_TREE
);
407 set_class_decl_access_flags (acc
, decl
);
408 DECL_CONTEXT (decl
) = outer
;
409 DECL_INNER_CLASS_LIST (outer
) =
410 tree_cons (decl
, alias
, DECL_INNER_CLASS_LIST (outer
));
411 CLASS_COMPLETE_P (decl
) = 1;
418 give_name_to_class (jcf
, i
)
422 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
423 || JPOOL_TAG (jcf
, i
) != CONSTANT_Class
)
428 int j
= JPOOL_USHORT1 (jcf
, i
);
429 /* verify_constant_pool confirmed that j is a CONSTANT_Utf8. */
430 tree class_name
= unmangle_classname (JPOOL_UTF_DATA (jcf
, j
),
431 JPOOL_UTF_LENGTH (jcf
, j
));
432 this_class
= lookup_class (class_name
);
433 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (this_class
));
435 if (main_input_filename
== NULL
&& jcf
== main_jcf
)
436 main_input_filename
= input_filename
;
438 jcf
->cpool
.data
[i
] = (jword
) this_class
;
439 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
444 /* Get the class of the CONSTANT_Class whose constant pool index is I. */
447 get_class_constant (JCF
*jcf
, int i
)
450 if (i
<= 0 || i
>= JPOOL_SIZE (jcf
)
451 || (JPOOL_TAG (jcf
, i
) & ~CONSTANT_ResolvedFlag
) != CONSTANT_Class
)
454 if (JPOOL_TAG (jcf
, i
) != CONSTANT_ResolvedClass
)
456 int name_index
= JPOOL_USHORT1 (jcf
, i
);
457 /* verify_constant_pool confirmed that name_index is a CONSTANT_Utf8. */
458 const char *name
= JPOOL_UTF_DATA (jcf
, name_index
);
459 int nlength
= JPOOL_UTF_LENGTH (jcf
, name_index
);
461 if (name
[0] == '[') /* Handle array "classes". */
462 type
= TREE_TYPE (parse_signature_string (name
, nlength
));
465 tree cname
= unmangle_classname (name
, nlength
);
466 type
= lookup_class (cname
);
468 jcf
->cpool
.data
[i
] = (jword
) type
;
469 JPOOL_TAG (jcf
, i
) = CONSTANT_ResolvedClass
;
472 type
= (tree
) jcf
->cpool
.data
[i
];
476 /* Read a class with the fully qualified-name NAME.
477 Return 1 iff we read the requested file.
478 (It is still possible we failed if the file did not
479 define the class it is supposed to.) */
486 tree icv
, class = NULL_TREE
;
487 tree save_current_class
= current_class
;
488 const char *save_input_filename
= input_filename
;
489 JCF
*save_current_jcf
= current_jcf
;
491 if ((icv
= IDENTIFIER_CLASS_VALUE (name
)) != NULL_TREE
)
493 class = TREE_TYPE (icv
);
494 jcf
= TYPE_JCF (class);
501 this_jcf
.zipd
= NULL
;
503 if (find_class (IDENTIFIER_POINTER (name
), IDENTIFIER_LENGTH (name
),
510 if (current_jcf
->java_source
)
512 const char *filename
= current_jcf
->filename
;
517 java_parser_context_save_global ();
518 java_push_parser_context ();
519 BUILD_FILENAME_IDENTIFIER_NODE (file
, filename
);
520 generate
= IS_A_COMMAND_LINE_FILENAME_P (file
);
521 if (wfl_operator
== NULL_TREE
)
522 wfl_operator
= build_expr_wfl (NULL_TREE
, NULL
, 0, 0);
523 EXPR_WFL_FILENAME_NODE (wfl_operator
) = file
;
524 input_filename
= ggc_strdup (filename
);
525 current_class
= NULL_TREE
;
526 current_function_decl
= NULL_TREE
;
527 if (!HAS_BEEN_ALREADY_PARSED_P (file
))
529 if (!(finput
= fopen (input_filename
, "r")))
530 fatal_io_error ("can't reopen %s", input_filename
);
531 parse_source_file_1 (file
, finput
);
532 parse_source_file_2 ();
533 parse_source_file_3 ();
535 fatal_io_error ("can't close %s", input_filename
);
537 JCF_FINISH (current_jcf
);
538 java_pop_parser_context (generate
);
539 java_parser_context_restore_global ();
543 if (class == NULL_TREE
|| ! CLASS_PARSED_P (class))
545 java_parser_context_save_global ();
546 java_push_parser_context ();
547 current_class
= class;
548 input_filename
= current_jcf
->filename
;
549 if (JCF_SEEN_IN_ZIP (current_jcf
))
550 read_zip_member(current_jcf
,
551 current_jcf
->zipd
, current_jcf
->zipd
->zipf
);
552 jcf_parse (current_jcf
);
553 class = current_class
;
554 java_pop_parser_context (0);
555 java_parser_context_restore_global ();
557 layout_class (class);
558 load_inner_classes (class);
561 current_class
= save_current_class
;
562 input_filename
= save_input_filename
;
563 current_jcf
= save_current_jcf
;
567 /* Load CLASS_OR_NAME. CLASS_OR_NAME can be a mere identifier if
568 called from the parser, otherwise it's a RECORD_TYPE node. If
569 VERBOSE is 1, print error message on failure to load a class. */
571 /* Replace calls to load_class by having callers call read_class directly
572 - and then perhaps rename read_class to load_class. FIXME */
575 load_class (class_or_name
, verbose
)
582 /* class_or_name can be the name of the class we want to load */
583 if (TREE_CODE (class_or_name
) == IDENTIFIER_NODE
)
584 name
= class_or_name
;
585 /* In some cases, it's a dependency that we process earlier that
587 else if (TREE_CODE (class_or_name
) == TREE_LIST
)
588 name
= TYPE_NAME (TREE_PURPOSE (class_or_name
));
589 /* Or it's a type in the making */
591 name
= DECL_NAME (TYPE_NAME (class_or_name
));
598 if ((class_loaded
= read_class (name
)))
601 /* We failed loading name. Now consider that we might be looking
602 for a inner class. */
603 if ((separator
= strrchr (IDENTIFIER_POINTER (name
), '$'))
604 || (separator
= strrchr (IDENTIFIER_POINTER (name
), '.')))
608 name
= get_identifier (IDENTIFIER_POINTER (name
));
611 /* Otherwise, we failed, we bail. */
616 if (!class_loaded
&& verbose
)
617 error ("cannot find file for class %s", IDENTIFIER_POINTER (saved
));
620 /* Parse the .class file JCF. */
628 if (jcf_parse_preamble (jcf
) != 0)
629 fatal_error ("not a valid Java .class file");
630 code
= jcf_parse_constant_pool (jcf
);
632 fatal_error ("error while parsing constant pool");
633 code
= verify_constant_pool (jcf
);
635 fatal_error ("error in constant pool entry #%d\n", code
);
637 jcf_parse_class (jcf
);
638 if (main_class
== NULL_TREE
)
639 main_class
= current_class
;
640 if (! quiet_flag
&& TYPE_NAME (current_class
))
641 fprintf (stderr
, " %s %s",
642 (jcf
->access_flags
& ACC_INTERFACE
) ? "interface" : "class",
643 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))));
644 if (CLASS_PARSED_P (current_class
))
646 /* FIXME - where was first time */
647 fatal_error ("reading class %s for the second time from %s",
648 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class
))),
651 CLASS_PARSED_P (current_class
) = 1;
653 for (i
= 1; i
< JPOOL_SIZE(jcf
); i
++)
655 switch (JPOOL_TAG (jcf
, i
))
658 get_class_constant (jcf
, i
);
663 code
= jcf_parse_fields (jcf
);
665 fatal_error ("error while parsing fields");
666 code
= jcf_parse_methods (jcf
);
668 fatal_error ("error while parsing methods");
669 code
= jcf_parse_final_attributes (jcf
);
671 fatal_error ("error while parsing final attributes");
673 /* The fields of class_type_node are already in correct order. */
674 if (current_class
!= class_type_node
&& current_class
!= object_type_node
)
675 TYPE_FIELDS (current_class
) = nreverse (TYPE_FIELDS (current_class
));
677 if (current_class
== object_type_node
)
679 layout_class_methods (object_type_node
);
680 /* If we don't have the right archive, emit a verbose warning.
681 If we're generating bytecode, emit the warning only if
682 -fforce-classes-archive-check was specified. */
684 && (!flag_emit_class_files
|| flag_force_classes_archive_check
))
685 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
);
688 all_class_list
= tree_cons (NULL_TREE
,
689 TYPE_NAME (current_class
), all_class_list
);
692 /* If we came across inner classes, load them now. */
694 load_inner_classes (cur_class
)
698 for (current
= DECL_INNER_CLASS_LIST (TYPE_NAME (cur_class
)); current
;
699 current
= TREE_CHAIN (current
))
701 tree name
= DECL_NAME (TREE_PURPOSE (current
));
702 tree decl
= IDENTIFIER_GLOBAL_VALUE (name
);
703 if (decl
&& ! CLASS_LOADED_P (TREE_TYPE (decl
))
704 && !CLASS_BEING_LAIDOUT (TREE_TYPE (decl
)))
705 load_class (name
, 1);
710 init_outgoing_cpool ()
712 outgoing_cpool
= xmalloc (sizeof (struct CPool
));
713 memset (outgoing_cpool
, 0, sizeof (struct CPool
));
720 const char *save_input_filename
= input_filename
;
721 int save_lineno
= lineno
;
723 java_layout_seen_class_methods ();
725 input_filename
= DECL_SOURCE_FILE (TYPE_NAME (current_class
));
727 (*debug_hooks
->start_source_file
) (lineno
, input_filename
);
728 init_outgoing_cpool ();
730 /* Currently we always have to emit calls to _Jv_InitClass when
731 compiling from class files. */
732 always_initialize_class_p
= 1;
734 for (field
= TYPE_FIELDS (current_class
);
735 field
!= NULL_TREE
; field
= TREE_CHAIN (field
))
736 if (FIELD_STATIC (field
))
737 DECL_EXTERNAL (field
) = 0;
739 for (method
= TYPE_METHODS (current_class
);
740 method
!= NULL_TREE
; method
= TREE_CHAIN (method
))
742 JCF
*jcf
= current_jcf
;
744 if (METHOD_ABSTRACT (method
))
747 if (METHOD_NATIVE (method
))
754 /* We need to compute the DECL_MAX_LOCALS. We need to take
755 the wide types into account too. */
756 for (arg
= TYPE_ARG_TYPES (TREE_TYPE (method
)), decl_max_locals
= 0;
757 arg
!= end_params_node
;
758 arg
= TREE_CHAIN (arg
), decl_max_locals
+= 1)
760 if (TREE_VALUE (arg
) && TYPE_IS_WIDE (TREE_VALUE (arg
)))
761 decl_max_locals
+= 1;
763 DECL_MAX_LOCALS (method
) = decl_max_locals
;
764 start_java_method (method
);
765 give_name_to_locals (jcf
);
766 expand_expr_stmt (build_jni_stub (method
));
771 if (DECL_CODE_OFFSET (method
) == 0)
773 current_function_decl
= method
;
774 error ("missing Code attribute");
779 if (DECL_LINENUMBERS_OFFSET (method
))
782 register unsigned char *ptr
;
783 JCF_SEEK (jcf
, DECL_LINENUMBERS_OFFSET (method
));
784 linenumber_count
= i
= JCF_readu2 (jcf
);
785 linenumber_table
= ptr
= jcf
->read_ptr
;
787 for (ptr
+= 2; --i
>= 0; ptr
+= 4)
789 int line
= GET_u2 (ptr
);
790 /* Set initial lineno lineno to smallest linenumber.
791 * Needs to be set before init_function_start. */
792 if (lineno
== 0 || line
< lineno
)
798 linenumber_table
= NULL
;
799 linenumber_count
= 0;
802 start_java_method (method
);
804 note_instructions (jcf
, method
);
806 give_name_to_locals (jcf
);
808 /* Actually generate code. */
809 expand_byte_code (jcf
, method
);
814 if (flag_emit_class_files
)
815 write_classfile (current_class
);
819 (*debug_hooks
->end_source_file
) (save_lineno
);
820 input_filename
= save_input_filename
;
821 lineno
= save_lineno
;
824 /* Parse a source file, as pointed by the current value of INPUT_FILENAME. */
827 parse_source_file_1 (file
, finput
)
831 int save_error_count
= java_error_count
;
832 /* Mark the file as parsed */
833 HAS_BEEN_ALREADY_PARSED_P (file
) = 1;
835 jcf_dependency_add_file (input_filename
, 0);
837 lang_init_source (1); /* Error msgs have no method prototypes */
839 /* There's no point in trying to find the current encoding unless we
840 are going to do something intelligent with it -- hence the test
842 #if defined (HAVE_LOCALE_H) && defined (HAVE_ICONV) && defined (HAVE_NL_LANGINFO)
843 setlocale (LC_CTYPE
, "");
844 if (current_encoding
== NULL
)
845 current_encoding
= nl_langinfo (CODESET
);
847 if (current_encoding
== NULL
|| *current_encoding
== '\0')
848 current_encoding
= DEFAULT_ENCODING
;
850 /* Initialize the parser */
851 java_init_lex (finput
, current_encoding
);
852 java_parse_abort_on_error ();
854 java_parse (); /* Parse and build partial tree nodes. */
855 java_parse_abort_on_error ();
858 /* Process a parsed source file, resolving names etc. */
861 parse_source_file_2 ()
863 int save_error_count
= java_error_count
;
864 java_complete_class (); /* Parse unsatisfied class decl. */
865 java_parse_abort_on_error ();
869 parse_source_file_3 ()
871 int save_error_count
= java_error_count
;
872 java_check_circular_reference (); /* Check on circular references */
873 java_parse_abort_on_error ();
874 java_fix_constructors (); /* Fix the constructors */
875 java_parse_abort_on_error ();
876 java_reorder_fields (); /* Reorder the fields */
880 add_predefined_file (name
)
883 predef_filenames
= tree_cons (NULL_TREE
, name
, predef_filenames
);
887 predefined_filename_p (node
)
892 for (iter
= predef_filenames
; iter
!= NULL_TREE
; iter
= TREE_CHAIN (iter
))
894 if (TREE_VALUE (iter
) == node
)
901 java_parse_file (set_yydebug
)
902 int set_yydebug ATTRIBUTE_UNUSED
;
904 int filename_count
= 0;
909 if (flag_filelist_file
)
912 finput
= fopen (input_filename
, "r");
914 fatal_io_error ("can't open %s", input_filename
);
915 list
= xmalloc(avail
);
923 avail
= 2 * (count
+ avail
);
924 list
= xrealloc (list
, avail
);
926 avail
= avail
- count
;
928 /* Subtract to to guarantee space for final '\0'. */
929 count
= fread (next
, 1, avail
- 1, finput
);
933 fatal_io_error ("error closing %s", input_filename
);
944 list
= xstrdup (input_filename
);
948 for (next
= list
; ; )
951 if (ch
== '\n' || ch
== '\r' || ch
== '\t' || ch
== ' '
952 || ch
== '&' /* FIXME */)
980 int len
= strlen (list
);
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");
1031 const char *resource_filename
;
1033 /* Only one resource file may be compiled at a time. */
1034 assert (TREE_CHAIN (current_file_list
) == NULL
);
1036 resource_filename
= IDENTIFIER_POINTER (TREE_VALUE (current_file_list
));
1037 compile_resource_file (resource_name
, resource_filename
);
1042 current_jcf
= main_jcf
;
1043 current_file_list
= nreverse (current_file_list
);
1044 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1046 unsigned char magic_string
[4];
1048 tree name
= TREE_VALUE (node
);
1050 /* Skip already parsed files */
1051 if (HAS_BEEN_ALREADY_PARSED_P (name
))
1054 /* Close previous descriptor, if any */
1055 if (finput
&& fclose (finput
))
1056 fatal_io_error ("can't close input file %s", main_input_filename
);
1058 finput
= fopen (IDENTIFIER_POINTER (name
), "rb");
1060 fatal_io_error ("can't open %s", IDENTIFIER_POINTER (name
));
1062 #ifdef IO_BUFFER_SIZE
1063 setvbuf (finput
, xmalloc (IO_BUFFER_SIZE
),
1064 _IOFBF
, IO_BUFFER_SIZE
);
1066 input_filename
= IDENTIFIER_POINTER (name
);
1068 /* Figure what kind of file we're dealing with */
1069 if (fread (magic_string
, 1, 4, finput
) == 4)
1071 fseek (finput
, 0L, SEEK_SET
);
1072 magic
= GET_u4 (magic_string
);
1074 if (magic
== 0xcafebabe)
1076 CLASS_FILE_P (node
) = 1;
1077 current_jcf
= ALLOC (sizeof (JCF
));
1078 JCF_ZERO (current_jcf
);
1079 current_jcf
->read_state
= finput
;
1080 current_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1081 jcf_parse (current_jcf
);
1082 TYPE_JCF (current_class
) = current_jcf
;
1083 CLASS_FROM_CURRENTLY_COMPILED_P (current_class
) = 1;
1084 TREE_PURPOSE (node
) = current_class
;
1086 else if (magic
== (JCF_u4
)ZIPMAGIC
)
1088 ZIP_FILE_P (node
) = 1;
1089 JCF_ZERO (main_jcf
);
1090 main_jcf
->read_state
= finput
;
1091 main_jcf
->filbuf
= jcf_filbuf_from_stdio
;
1092 if (open_in_zip (main_jcf
, input_filename
, NULL
, 0) < 0)
1093 fatal_error ("bad zip/jar file %s", IDENTIFIER_POINTER (name
));
1094 localToFile
= SeenZipFiles
;
1095 /* Register all the class defined there. */
1096 process_zip_dir (main_jcf
->read_state
);
1097 parse_zip_file_entries ();
1100 CLASS_FROM_CURRENTLY_COMPILED_P (current_class) = 1;
1105 JAVA_FILE_P (node
) = 1;
1106 java_push_parser_context ();
1107 java_parser_context_save_global ();
1108 parse_source_file_1 (name
, finput
);
1109 java_parser_context_restore_global ();
1110 java_pop_parser_context (1);
1114 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1116 input_filename
= ctxp
->filename
;
1117 parse_source_file_2 ();
1120 for (ctxp
= ctxp_for_generation
; ctxp
; ctxp
= ctxp
->next
)
1122 input_filename
= ctxp
->filename
;
1123 parse_source_file_3 ();
1126 for (node
= current_file_list
; node
; node
= TREE_CHAIN (node
))
1128 input_filename
= IDENTIFIER_POINTER (TREE_VALUE (node
));
1129 if (CLASS_FILE_P (node
))
1131 current_class
= TREE_PURPOSE (node
);
1132 current_jcf
= TYPE_JCF (current_class
);
1133 layout_class (current_class
);
1134 load_inner_classes (current_class
);
1135 parse_class_file ();
1136 JCF_FINISH (current_jcf
);
1139 input_filename
= main_input_filename
;
1141 java_expand_classes ();
1142 if (!java_report_errors () && !flag_syntax_only
)
1144 emit_register_classes ();
1145 if (flag_indirect_dispatch
)
1146 emit_offset_symbol_table ();
1150 /* Process all class entries found in the zip file. */
1152 parse_zip_file_entries (void)
1154 struct ZipDirectory
*zdir
;
1157 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1158 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1162 /* We don't need to consider those files. */
1163 if (!zdir
->size
|| !zdir
->filename_offset
)
1166 class = lookup_class (get_identifier (ZIPDIR_FILENAME (zdir
)));
1167 current_jcf
= TYPE_JCF (class);
1168 current_class
= class;
1170 if ( !CLASS_LOADED_P (class))
1172 if (! CLASS_PARSED_P (class))
1174 read_zip_member(current_jcf
, zdir
, localToFile
);
1175 jcf_parse (current_jcf
);
1177 layout_class (current_class
);
1178 load_inner_classes (current_class
);
1181 if (TYPE_SIZE (current_class
) != error_mark_node
)
1183 input_filename
= current_jcf
->filename
;
1184 parse_class_file ();
1185 FREE (current_jcf
->buffer
); /* No longer necessary */
1186 /* Note: there is a way to free this buffer right after a
1187 class seen in a zip file has been parsed. The idea is the
1188 set its jcf in such a way that buffer will be reallocated
1189 the time the code for the class will be generated. FIXME. */
1194 /* Read all the entries of the zip file, creates a class and a JCF. Sets the
1195 jcf up for further processing and link it to the created class. */
1198 process_zip_dir (FILE *finput
)
1203 for (i
= 0, zdir
= (ZipDirectory
*)localToFile
->central_directory
;
1204 i
< localToFile
->count
; i
++, zdir
= ZIPDIR_NEXT (zdir
))
1206 char *class_name
, *file_name
, *class_name_in_zip_dir
;
1211 class_name_in_zip_dir
= ZIPDIR_FILENAME (zdir
);
1213 /* We choose to not to process entries with a zero size or entries
1214 not bearing the .class extension. */
1215 if (!zdir
->size
|| !zdir
->filename_offset
||
1216 strncmp (&class_name_in_zip_dir
[zdir
->filename_length
-6],
1219 /* So it will be skipped in parse_zip_file_entries */
1224 class_name
= ALLOC (zdir
->filename_length
+1-6);
1225 file_name
= ALLOC (zdir
->filename_length
+1);
1226 jcf
= ALLOC (sizeof (JCF
));
1229 strncpy (class_name
, class_name_in_zip_dir
, zdir
->filename_length
-6);
1230 class_name
[zdir
->filename_length
-6] = '\0';
1231 strncpy (file_name
, class_name_in_zip_dir
, zdir
->filename_length
);
1232 file_name
[zdir
->filename_length
] = '\0';
1234 for (j
=0; class_name
[j
]; j
++)
1235 class_name
[j
] = (class_name
[j
] == '/' ? '.' : class_name
[j
]);
1237 /* Yes, we write back the true class name into the zip directory. */
1238 strcpy (class_name_in_zip_dir
, class_name
);
1239 zdir
->filename_length
= j
;
1240 class = lookup_class (get_identifier (class_name
));
1242 jcf
->read_state
= finput
;
1243 jcf
->filbuf
= jcf_filbuf_from_stdio
;
1244 jcf
->java_source
= 0;
1245 jcf
->classname
= class_name
;
1246 jcf
->filename
= file_name
;
1249 TYPE_JCF (class) = jcf
;
1253 /* Initialization. */
1258 /* Register roots with the garbage collector. */
1259 ggc_add_root (¤t_jcf
, 1, sizeof (JCF
), (void (*)(void *))ggc_mark_jcf
);
1264 #include "gt-java-jcf-parse.h"