1 /* Java(TM) language-specific utility routines.
2 Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001
3 Free Software Foundation, Inc.
5 This file is part of GNU CC.
7 GNU CC 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 GNU CC 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 GNU CC; 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 /* Hacked by Per Bothner <bothner@cygnus.com> February 1996. */
34 #include "java-tree.h"
37 #include "langhooks.h"
38 #include "langhooks-def.h"
42 #include "diagnostic.h"
46 const char *const string;
51 static const char *java_init PARAMS ((const char *));
52 static void java_finish PARAMS ((void));
53 static void java_init_options PARAMS ((void));
54 static int java_decode_option PARAMS ((int, char **));
55 static void put_decl_string PARAMS ((const char *, int));
56 static void put_decl_node PARAMS ((tree));
57 static void java_dummy_print PARAMS ((diagnostic_context *, const char *));
58 static void lang_print_error PARAMS ((diagnostic_context *, const char *));
59 static int process_option_with_no PARAMS ((const char *,
60 const struct string_option *,
63 #ifndef TARGET_OBJECT_SUFFIX
64 # define TARGET_OBJECT_SUFFIX ".o"
67 /* Table indexed by tree code giving a string containing a character
68 classifying the tree code. Possibilities are
69 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
71 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
73 static const char java_tree_code_type[] = {
75 #include "java-tree.def"
79 /* Table indexed by tree code giving number of expression
80 operands beyond the fixed part of the node structure.
81 Not used for types or decls. */
83 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
85 static const int java_tree_code_length[] = {
87 #include "java-tree.def"
91 /* Names of tree components.
92 Used for printing out the tree and error messages. */
93 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
95 static const char *const java_tree_code_name[] = {
97 #include "java-tree.def"
101 int compiling_from_source;
103 char * resource_name;
105 int flag_emit_class_files = 0;
107 /* Nonzero if input file is a file with a list of filenames to compile. */
109 int flag_filelist_file = 0;
111 /* When non zero, we emit xref strings. Values of the flag for xref
112 backends are defined in xref_flag_table, xref.c. */
114 int flag_emit_xref = 0;
116 /* When non zero, -Wall was turned on. */
119 /* When non zero, check for redundant modifier uses. */
120 int flag_redundant = 0;
122 /* When non zero, call a library routine to do integer divisions. */
123 int flag_use_divide_subroutine = 1;
125 /* When non zero, generate code for the Boehm GC. */
126 int flag_use_boehm_gc = 0;
128 /* When non zero, assume the runtime uses a hash table to map an
129 object to its synchronization structure. */
130 int flag_hash_synchronization;
132 /* When non zero, assume all native functions are implemented with
136 /* When non zero, warn when source file is newer than matching class
140 /* When non zero, generate checks for references to NULL. */
141 int flag_check_references = 0;
143 /* The encoding of the source file. */
144 const char *current_encoding = NULL;
146 /* When non zero, report the now deprecated empty statements. */
147 int flag_extraneous_semicolon;
149 /* When non zero, always check for a non gcj generated classes archive. */
150 int flag_force_classes_archive_check;
152 /* When zero, don't optimize static class initialization. This flag shouldn't
153 be tested alone, use STATIC_CLASS_INITIALIZATION_OPTIMIZATION_P instead. */
154 int flag_optimize_sci = 1;
156 /* When non zero, use offset tables for virtual method calls
157 in order to improve binary compatibility. */
158 int flag_indirect_dispatch = 0;
160 /* When non zero, print extra version information. */
161 static int version_flag = 0;
163 /* Table of language-dependent -f options.
164 STRING is the option name. VARIABLE is the address of the variable.
165 ON_VALUE is the value to store in VARIABLE
166 if `-fSTRING' is seen as an option.
167 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
169 static const struct string_option
172 {"emit-class-file", &flag_emit_class_files, 1},
173 {"emit-class-files", &flag_emit_class_files, 1},
174 {"filelist-file", &flag_filelist_file, 1},
175 {"use-divide-subroutine", &flag_use_divide_subroutine, 1},
176 {"use-boehm-gc", &flag_use_boehm_gc, 1},
177 {"hash-synchronization", &flag_hash_synchronization, 1},
178 {"jni", &flag_jni, 1},
179 {"check-references", &flag_check_references, 1},
180 {"force-classes-archive-check", &flag_force_classes_archive_check, 1},
181 {"optimize-static-class-initialization", &flag_optimize_sci, 1 },
182 {"indirect-dispatch", &flag_indirect_dispatch, 1}
185 static const struct string_option
188 { "redundant-modifiers", &flag_redundant, 1 },
189 { "extraneous-semicolon", &flag_extraneous_semicolon, 1 },
190 { "out-of-date", &flag_newer, 1 }
195 /* Variable controlling how dependency tracking is enabled in
197 static int dependency_tracking = 0;
199 /* Flag values for DEPENDENCY_TRACKING. */
200 #define DEPEND_SET_FILE 1
201 #define DEPEND_ENABLE 2
202 #define DEPEND_TARGET_SET 4
203 #define DEPEND_FILE_ALREADY_SET 8
205 #undef LANG_HOOKS_NAME
206 #define LANG_HOOKS_NAME "GNU Java"
207 #undef LANG_HOOKS_INIT
208 #define LANG_HOOKS_INIT java_init
209 #undef LANG_HOOKS_FINISH
210 #define LANG_HOOKS_FINISH java_finish
211 #undef LANG_HOOKS_INIT_OPTIONS
212 #define LANG_HOOKS_INIT_OPTIONS java_init_options
213 #undef LANG_HOOKS_DECODE_OPTION
214 #define LANG_HOOKS_DECODE_OPTION java_decode_option
215 #undef LANG_HOOKS_SET_YYDEBUG
216 #define LANG_HOOKS_SET_YYDEBUG java_set_yydebug
218 /* Each front end provides its own. */
219 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
221 /* Process an option that can accept a `no-' form.
222 Return 1 if option found, 0 otherwise. */
224 process_option_with_no (p, table, table_size)
226 const struct string_option *table;
231 for (j = 0; j < table_size; j++)
233 if (!strcmp (p, table[j].string))
235 *table[j].variable = table[j].on_value;
238 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
239 && ! strcmp (p+3, table[j].string))
241 *table[j].variable = ! table[j].on_value;
250 * process java-specific compiler command-line options
251 * return 0, but do not complain if the option is not recognised.
254 java_decode_option (argc, argv)
255 int argc __attribute__ ((__unused__));
260 if (strcmp (p, "-version") == 0)
263 /* We return 0 so that the caller can process this. */
267 #define CLARG "-fcompile-resource="
268 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
270 resource_name = p + sizeof (CLARG) - 1;
274 #define CLARG "-fassume-compiled="
275 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
277 add_assume_compiled (p + sizeof (CLARG) - 1, 0);
281 #define CLARG "-fno-assume-compiled="
282 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
284 add_assume_compiled (p + sizeof (CLARG) - 1, 1);
288 #define CLARG "-fassume-compiled"
289 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
291 add_assume_compiled ("", 0);
295 #define CLARG "-fno-assume-compiled"
296 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
298 add_assume_compiled ("", 1);
302 #define CLARG "-fclasspath="
303 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
305 jcf_path_classpath_arg (p + sizeof (CLARG) - 1);
309 #define CLARG "-fCLASSPATH="
310 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
312 jcf_path_CLASSPATH_arg (p + sizeof (CLARG) - 1);
316 else if (strncmp (p, "-I", 2) == 0)
318 jcf_path_include_arg (p + 2);
322 #define ARG "-foutput-class-dir="
323 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
325 jcf_write_base_directory = p + sizeof (ARG) - 1;
329 #define ARG "-fencoding="
330 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
332 current_encoding = p + sizeof (ARG) - 1;
337 if (p[0] == '-' && p[1] == 'f')
339 /* Some kind of -f option.
340 P's value is the option sans `-f'.
341 Search for it in the table of options. */
343 return process_option_with_no (p, lang_f_options,
344 ARRAY_SIZE (lang_f_options));
347 if (strcmp (p, "-Wall") == 0)
351 flag_extraneous_semicolon = 1;
352 /* When -Wall given, enable -Wunused. We do this because the C
353 compiler does it, and people expect it. */
358 if (p[0] == '-' && p[1] == 'W')
360 /* Skip `-W' and see if we accept the option or its `no-' form. */
362 return process_option_with_no (p, lang_W_options,
363 ARRAY_SIZE (lang_W_options));
366 if (strcmp (p, "-MD") == 0)
368 jcf_dependency_init (1);
369 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
372 else if (strcmp (p, "-MMD") == 0)
374 jcf_dependency_init (0);
375 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
378 else if (strcmp (p, "-M") == 0)
380 jcf_dependency_init (1);
381 dependency_tracking |= DEPEND_ENABLE;
384 else if (strcmp (p, "-MM") == 0)
386 jcf_dependency_init (0);
387 dependency_tracking |= DEPEND_ENABLE;
390 else if (strcmp (p, "-MP") == 0)
392 jcf_dependency_print_dummies ();
395 else if (strcmp (p, "-MT") == 0)
397 jcf_dependency_set_target (argv[1]);
398 dependency_tracking |= DEPEND_TARGET_SET;
401 else if (strcmp (p, "-MF") == 0)
403 jcf_dependency_set_dep_file (argv[1]);
404 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
411 /* Global open file. */
416 const char *filename;
419 extern int flag_minimal_debug;
420 flag_minimal_debug = 0;
423 /* Open input file. */
425 if (filename == 0 || !strcmp (filename, "-"))
430 if (dependency_tracking)
431 error ("can't do dependency tracking with input from stdin");
435 if (dependency_tracking)
439 /* If the target is set and the output filename is set, then
440 there's no processing to do here. Otherwise we must
441 compute one or the other. */
442 if (! ((dependency_tracking & DEPEND_TARGET_SET)
443 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
445 dot = strrchr (filename, '.');
447 error ("couldn't determine target name for dependency tracking");
450 char *buf = (char *) xmalloc (dot - filename +
451 3 + sizeof (TARGET_OBJECT_SUFFIX));
452 strncpy (buf, filename, dot - filename);
454 /* If emitting class files, we might have multiple
455 targets. The class generation code takes care of
456 registering them. Otherwise we compute the
458 if ((dependency_tracking & DEPEND_TARGET_SET))
460 else if (flag_emit_class_files)
461 jcf_dependency_set_target (NULL);
464 strcpy (buf + (dot - filename), TARGET_OBJECT_SUFFIX);
465 jcf_dependency_set_target (buf);
468 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
470 else if ((dependency_tracking & DEPEND_SET_FILE))
472 strcpy (buf + (dot - filename), ".d");
473 jcf_dependency_set_dep_file (buf);
476 jcf_dependency_set_dep_file ("-");
485 jcf_path_seal (version_flag);
487 decl_printable_name = lang_printable_name;
488 print_error_function = lang_print_error;
489 lang_expand_expr = java_lang_expand_expr;
491 /* Append to Gcc tree node definition arrays */
493 memcpy (tree_code_type + (int) LAST_AND_UNUSED_TREE_CODE,
495 (int)LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE);
496 memcpy (tree_code_length + (int) LAST_AND_UNUSED_TREE_CODE,
497 java_tree_code_length,
498 (LAST_JAVA_TREE_CODE -
499 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (int));
500 memcpy (tree_code_name + (int) LAST_AND_UNUSED_TREE_CODE,
502 (LAST_JAVA_TREE_CODE -
503 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (char *));
504 java_init_decl_processing ();
506 using_eh_for_cleanups ();
514 jcf_dependency_write ();
517 /* Buffer used by lang_printable_name. */
518 static char *decl_buf = NULL;
520 /* Allocated size of decl_buf. */
521 static int decl_buflen = 0;
523 /* Length of used part of decl_buf; position for next character. */
524 static int decl_bufpos = 0;
526 /* Append the string STR to decl_buf.
527 It length is given by LEN; -1 means the string is nul-terminated. */
530 put_decl_string (str, len)
536 if (decl_bufpos + len >= decl_buflen)
538 if (decl_buf == NULL)
540 decl_buflen = len + 100;
541 decl_buf = (char *) xmalloc (decl_buflen);
546 decl_buf = (char *) xrealloc (decl_buf, decl_buflen);
549 strcpy (decl_buf + decl_bufpos, str);
553 /* Append to decl_buf a printable name for NODE. */
560 if (TREE_CODE (node) == POINTER_TYPE)
562 node = TREE_TYPE (node);
565 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
566 && DECL_NAME (node) != NULL_TREE)
568 if (TREE_CODE (node) == FUNCTION_DECL)
570 /* We want to print the type the DECL belongs to. We don't do
571 that when we handle constructors. */
572 if (! DECL_CONSTRUCTOR_P (node)
573 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
575 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
576 put_decl_string (".", 1);
578 if (! DECL_CONSTRUCTOR_P (node))
579 put_decl_node (DECL_NAME (node));
580 if (TREE_TYPE (node) != NULL_TREE)
583 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
584 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
585 args = TREE_CHAIN (args);
586 put_decl_string ("(", 1);
587 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
590 put_decl_string (",", 1);
591 put_decl_node (TREE_VALUE (args));
593 put_decl_string (")", 1);
597 put_decl_node (DECL_NAME (node));
599 else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't'
600 && TYPE_NAME (node) != NULL_TREE)
602 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
604 put_decl_node (TYPE_ARRAY_ELEMENT (node));
605 put_decl_string("[]", 2);
607 else if (node == promoted_byte_type_node)
608 put_decl_string ("byte", 4);
609 else if (node == promoted_short_type_node)
610 put_decl_string ("short", 5);
611 else if (node == promoted_char_type_node)
612 put_decl_string ("char", 4);
613 else if (node == promoted_boolean_type_node)
614 put_decl_string ("boolean", 7);
615 else if (node == void_type_node && was_pointer)
616 put_decl_string ("null", 4);
618 put_decl_node (TYPE_NAME (node));
620 else if (TREE_CODE (node) == IDENTIFIER_NODE)
621 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
623 put_decl_string ("<unknown>", -1);
626 /* Return a user-friendly name for DECL.
627 The resulting string is only valid until the next call.
628 The value of the hook decl_printable_name is this function,
629 which is also called directly by lang_print_error. */
632 lang_printable_name (decl, v)
634 int v __attribute__ ((__unused__));
637 put_decl_node (decl);
638 put_decl_string ("", 1);
642 /* Does the same thing that lang_printable_name, but add a leading
643 space to the DECL name string -- With Leading Space. */
646 lang_printable_name_wls (decl, v)
648 int v __attribute__ ((__unused__));
651 put_decl_node (decl);
652 put_decl_string ("", 1);
657 /* Print on stderr the current class and method context. This function
658 is the value of the hook print_error_function, called from toplev.c. */
661 lang_print_error (context, file)
662 diagnostic_context *context __attribute__((__unused__));
665 static tree last_error_function_context = NULL_TREE;
666 static tree last_error_function = NULL;
667 static int initialized_p;
669 /* Register LAST_ERROR_FUNCTION_CONTEXT and LAST_ERROR_FUNCTION with
670 the garbage collector. */
673 ggc_add_tree_root (&last_error_function_context, 1);
674 ggc_add_tree_root (&last_error_function, 1);
678 if (current_function_decl != NULL
679 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
682 fprintf (stderr, "%s: ", file);
684 last_error_function_context = DECL_CONTEXT (current_function_decl);
685 fprintf (stderr, "In class `%s':\n",
686 lang_printable_name (last_error_function_context, 0));
688 if (last_error_function != current_function_decl)
691 fprintf (stderr, "%s: ", file);
693 if (current_function_decl == NULL)
694 fprintf (stderr, "At top level:\n");
697 const char *name = lang_printable_name (current_function_decl, 2);
698 fprintf (stderr, "In %s `%s':\n",
699 (DECL_CONSTRUCTOR_P (current_function_decl) ? "constructor"
704 last_error_function = current_function_decl;
709 /* This doesn't do anything on purpose. It's used to satisfy the
710 print_error_function hook we don't print error messages with bogus
711 function prototypes. */
714 java_dummy_print (c, s)
715 diagnostic_context *c __attribute__ ((__unused__));
716 const char *s __attribute__ ((__unused__));
720 /* Called to install the PRINT_ERROR_FUNCTION hook differently
721 according to LEVEL. LEVEL is 1 during early parsing, when function
722 prototypes aren't fully resolved. print_error_function is set so it
723 doesn't print incomplete function prototypes. When LEVEL is 2,
724 function prototypes are fully resolved and can be printed when
727 void lang_init_source (level)
731 print_error_function = java_dummy_print;
733 print_error_function = lang_print_error;
739 flag_bounds_check = 1;
741 flag_non_call_exceptions = 1;