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"
48 static void java_init PARAMS ((void));
49 static void java_init_options PARAMS ((void));
50 static int java_decode_option PARAMS ((int, char **));
51 static void put_decl_string PARAMS ((const char *, int));
52 static void put_decl_node PARAMS ((tree));
53 static void java_dummy_print PARAMS ((const char *));
54 static void lang_print_error PARAMS ((const char *));
55 static int process_option_with_no PARAMS ((char *,
56 struct string_option *,
60 # define OBJECT_SUFFIX ".o"
63 /* Table indexed by tree code giving a string containing a character
64 classifying the tree code. Possibilities are
65 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
67 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
69 char java_tree_code_type[] = {
71 #include "java-tree.def"
75 /* Table indexed by tree code giving number of expression
76 operands beyond the fixed part of the node structure.
77 Not used for types or decls. */
79 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
81 int java_tree_code_length[] = {
83 #include "java-tree.def"
87 /* Names of tree components.
88 Used for printing out the tree and error messages. */
89 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
91 const char *java_tree_code_name[] = {
93 #include "java-tree.def"
97 int compiling_from_source;
99 const char * const language_string = "GNU Java";
101 /* Nonzero if we should make is_compiled_class always return 1 for
102 appropriate classes that we're referencing. */
104 int flag_assume_compiled = 1;
106 int flag_emit_class_files = 0;
108 /* When non zero, we emit xref strings. Values of the flag for xref
109 backends are defined in xref_flag_table, xref.c. */
111 int flag_emit_xref = 0;
113 /* When non zero, -Wall was turned on. */
116 /* When non zero, check for redundant modifier uses. */
117 int flag_redundant = 0;
119 /* When non zero, warns about overridings that don't occur. */
120 int flag_not_overriding = 0;
122 /* When non zero, warns that final local are treated as non final. */
123 int flag_static_local_jdk1_1 = 0;
125 /* When non zero, call a library routine to do integer divisions. */
126 int flag_use_divide_subroutine = 1;
128 /* When non zero, generate code for the Boehm GC. */
129 int flag_use_boehm_gc = 0;
131 /* When non zero, assume the runtime uses a hash table to map an
132 object to its synchronization structure. */
133 int flag_hash_synchronization;
135 /* When non zero, assume all native functions are implemented with
139 /* When non zero, warn when source file is newer than matching class
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 /* From gcc/flags.h, and indicates if exceptions are turned on or not. */
151 extern int flag_new_exceptions;
152 extern int flag_exceptions;
154 /* Table of language-dependent -f options.
155 STRING is the option name. VARIABLE is the address of the variable.
156 ON_VALUE is the value to store in VARIABLE
157 if `-fSTRING' is seen as an option.
158 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
160 static struct string_option
163 {"emit-class-file", &flag_emit_class_files, 1},
164 {"emit-class-files", &flag_emit_class_files, 1},
165 {"use-divide-subroutine", &flag_use_divide_subroutine, 1},
166 {"use-boehm-gc", &flag_use_boehm_gc, 1},
167 {"hash-synchronization", &flag_hash_synchronization, 1},
168 {"jni", &flag_jni, 1}
171 static struct string_option
174 { "unsupported-jdk11", &flag_static_local_jdk1_1, 1 },
175 { "redundant-modifiers", &flag_redundant, 1 },
176 { "extraneous-semicolon", &flag_extraneous_semicolon, 1 },
177 { "out-of-date", &flag_newer, 1 }
182 /* Variable controlling how dependency tracking is enabled in
184 static int dependency_tracking = 0;
186 /* Flag values for DEPENDENCY_TRACKING. */
187 #define DEPEND_SET_FILE 1
188 #define DEPEND_ENABLE 2
189 #define DEPEND_TARGET_SET 4
190 #define DEPEND_FILE_ALREADY_SET 8
192 /* Each front end provides its own. */
193 struct lang_hooks lang_hooks = {java_init,
194 NULL, /* java_finish */
197 NULL /* post_options */};
199 /* Process an option that can accept a `no-' form.
200 Return 1 if option found, 0 otherwise. */
202 process_option_with_no (p, table, table_size)
204 struct string_option *table;
209 for (j = 0; j < table_size; j++)
211 if (!strcmp (p, table[j].string))
213 *table[j].variable = table[j].on_value;
216 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
217 && ! strcmp (p+3, table[j].string))
219 *table[j].variable = ! table[j].on_value;
228 * process java-specific compiler command-line options
229 * return 0, but do not complain if the option is not recognised.
232 java_decode_option (argc, argv)
233 int argc __attribute__ ((__unused__));
238 #define CLARG "-fassume-compiled="
239 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
241 add_assume_compiled (p + sizeof (CLARG) - 1, 0);
245 #define CLARG "-fno-assume-compiled="
246 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
248 add_assume_compiled (p + sizeof (CLARG) - 1, 1);
252 #define CLARG "-fassume-compiled"
253 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
255 add_assume_compiled ("", 0);
259 #define CLARG "-fno-assume-compiled"
260 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
262 add_assume_compiled ("", 1);
266 #define CLARG "-fclasspath="
267 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
269 jcf_path_classpath_arg (p + sizeof (CLARG) - 1);
273 #define CLARG "-fCLASSPATH="
274 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
276 jcf_path_CLASSPATH_arg (p + sizeof (CLARG) - 1);
280 else if (strncmp (p, "-I", 2) == 0)
282 jcf_path_include_arg (p + 2);
286 #define ARG "-foutput-class-dir="
287 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
289 jcf_write_base_directory = p + sizeof (ARG) - 1;
293 #define ARG "-fencoding="
294 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
296 current_encoding = p + sizeof (ARG) - 1;
301 if (p[0] == '-' && p[1] == 'f')
303 /* Some kind of -f option.
304 P's value is the option sans `-f'.
305 Search for it in the table of options. */
307 return process_option_with_no (p, lang_f_options,
308 ARRAY_SIZE (lang_f_options));
311 if (strcmp (p, "-Wall") == 0)
315 flag_extraneous_semicolon = 1;
316 /* When -Wall given, enable -Wunused. We do this because the C
317 compiler does it, and people expect it. */
322 if (p[0] == '-' && p[1] == 'W')
324 /* Skip `-W' and see if we accept the option or its `no-' form. */
326 return process_option_with_no (p, lang_W_options,
327 ARRAY_SIZE (lang_W_options));
330 if (strcmp (p, "-MD") == 0)
332 jcf_dependency_init (1);
333 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
336 else if (strcmp (p, "-MMD") == 0)
338 jcf_dependency_init (0);
339 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
342 else if (strcmp (p, "-M") == 0)
344 jcf_dependency_init (1);
345 dependency_tracking |= DEPEND_ENABLE;
348 else if (strcmp (p, "-MM") == 0)
350 jcf_dependency_init (0);
351 dependency_tracking |= DEPEND_ENABLE;
354 else if (strcmp (p, "-MP") == 0)
356 jcf_dependency_print_dummies ();
359 else if (strcmp (p, "-MT") == 0)
361 jcf_dependency_set_target (argv[1]);
362 dependency_tracking |= DEPEND_TARGET_SET;
365 else if (strcmp (p, "-MF") == 0)
367 jcf_dependency_set_dep_file (argv[1]);
368 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
375 /* Global open file. */
379 init_parse (filename)
380 const char *filename;
382 /* Open input file. */
384 if (filename == 0 || !strcmp (filename, "-"))
389 if (dependency_tracking)
390 error ("can't do dependency tracking with input from stdin");
394 if (dependency_tracking)
398 /* If the target is set and the output filename is set, then
399 there's no processing to do here. Otherwise we must
400 compute one or the other. */
401 if (! ((dependency_tracking & DEPEND_TARGET_SET)
402 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
404 dot = strrchr (filename, '.');
406 error ("couldn't determine target name for dependency tracking");
409 char *buf = (char *) xmalloc (dot - filename +
410 3 + sizeof (OBJECT_SUFFIX));
411 strncpy (buf, filename, dot - filename);
413 /* If emitting class files, we might have multiple
414 targets. The class generation code takes care of
415 registering them. Otherwise we compute the
417 if ((dependency_tracking & DEPEND_TARGET_SET))
419 else if (flag_emit_class_files)
420 jcf_dependency_set_target (NULL);
423 strcpy (buf + (dot - filename), OBJECT_SUFFIX);
424 jcf_dependency_set_target (buf);
427 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
429 else if ((dependency_tracking & DEPEND_SET_FILE))
431 strcpy (buf + (dot - filename), ".d");
432 jcf_dependency_set_dep_file (buf);
435 jcf_dependency_set_dep_file ("-");
451 jcf_dependency_write ();
454 /* Buffer used by lang_printable_name. */
455 static char *decl_buf = NULL;
457 /* Allocated size of decl_buf. */
458 static int decl_buflen = 0;
460 /* Length of used part of decl_buf; position for next character. */
461 static int decl_bufpos = 0;
463 /* Append the string STR to decl_buf.
464 It length is given by LEN; -1 means the string is nul-terminated. */
467 put_decl_string (str, len)
473 if (decl_bufpos + len >= decl_buflen)
475 if (decl_buf == NULL)
477 decl_buflen = len + 100;
478 decl_buf = (char *) xmalloc (decl_buflen);
483 decl_buf = (char *) xrealloc (decl_buf, decl_buflen);
486 strcpy (decl_buf + decl_bufpos, str);
490 /* Append to decl_buf a printable name for NODE. */
497 if (TREE_CODE (node) == POINTER_TYPE)
499 node = TREE_TYPE (node);
502 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
503 && DECL_NAME (node) != NULL_TREE)
505 /* We want to print the type the DECL belongs to. We don't do
506 that when we handle constructors. */
507 if (TREE_CODE (node) == FUNCTION_DECL
508 && ! DECL_CONSTRUCTOR_P (node)
509 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
510 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
511 else if (! DECL_CONSTRUCTOR_P (node))
512 put_decl_node (DECL_NAME (node));
513 if (TREE_CODE (node) == FUNCTION_DECL && TREE_TYPE (node) != NULL_TREE)
516 tree args = TYPE_ARG_TYPES (TREE_TYPE (node));
517 if (TREE_CODE (TREE_TYPE (node)) == METHOD_TYPE)
518 args = TREE_CHAIN (args);
519 put_decl_string ("(", 1);
520 for ( ; args != end_params_node; args = TREE_CHAIN (args), i++)
523 put_decl_string (",", 1);
524 put_decl_node (TREE_VALUE (args));
526 put_decl_string (")", 1);
529 else if (TREE_CODE_CLASS (TREE_CODE (node)) == 't'
530 && TYPE_NAME (node) != NULL_TREE)
532 if (TREE_CODE (node) == RECORD_TYPE && TYPE_ARRAY_P (node))
534 put_decl_node (TYPE_ARRAY_ELEMENT (node));
535 put_decl_string("[]", 2);
537 else if (node == promoted_byte_type_node)
538 put_decl_string ("byte", 4);
539 else if (node == promoted_short_type_node)
540 put_decl_string ("short", 5);
541 else if (node == promoted_char_type_node)
542 put_decl_string ("char", 4);
543 else if (node == promoted_boolean_type_node)
544 put_decl_string ("boolean", 7);
545 else if (node == void_type_node && was_pointer)
546 put_decl_string ("null", 4);
548 put_decl_node (TYPE_NAME (node));
550 else if (TREE_CODE (node) == IDENTIFIER_NODE)
551 put_decl_string (IDENTIFIER_POINTER (node), IDENTIFIER_LENGTH (node));
553 put_decl_string ("<unknown>", -1);
556 /* Return a user-friendly name for DECL.
557 The resulting string is only valid until the next call.
558 The value of the hook decl_printable_name is this function,
559 which is also called directly by lang_print_error. */
562 lang_printable_name (decl, v)
564 int v __attribute__ ((__unused__));
567 put_decl_node (decl);
568 put_decl_string ("", 1);
572 /* Does the same thing that lang_printable_name, but add a leading
573 space to the DECL name string -- With Leading Space. */
576 lang_printable_name_wls (decl, v)
578 int v __attribute__ ((__unused__));
581 put_decl_node (decl);
582 put_decl_string ("", 1);
587 /* Print on stderr the current class and method context. This function
588 is the value of the hook print_error_function, called from toplev.c. */
591 lang_print_error (file)
594 static tree last_error_function_context = NULL_TREE;
595 static tree last_error_function = NULL;
596 static int initialized_p;
598 /* Register LAST_ERROR_FUNCTION_CONTEXT and LAST_ERROR_FUNCTION with
599 the garbage collector. */
602 ggc_add_tree_root (&last_error_function_context, 1);
603 ggc_add_tree_root (&last_error_function, 1);
607 if (current_function_decl != NULL
608 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
611 fprintf (stderr, "%s: ", file);
613 last_error_function_context = DECL_CONTEXT (current_function_decl);
614 fprintf (stderr, "In class `%s':\n",
615 lang_printable_name (last_error_function_context, 0));
617 if (last_error_function != current_function_decl)
620 fprintf (stderr, "%s: ", file);
622 if (current_function_decl == NULL)
623 fprintf (stderr, "At top level:\n");
626 const char *name = lang_printable_name (current_function_decl, 2);
627 fprintf (stderr, "In method `%s':\n", name);
630 last_error_function = current_function_decl;
639 extern int flag_minimal_debug;
640 flag_minimal_debug = 0;
646 decl_printable_name = lang_printable_name;
647 print_error_function = lang_print_error;
648 lang_expand_expr = java_lang_expand_expr;
652 /* Append to Gcc tree node definition arrays */
654 memcpy (tree_code_type + (int) LAST_AND_UNUSED_TREE_CODE,
656 (int)LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE);
657 memcpy (tree_code_length + (int) LAST_AND_UNUSED_TREE_CODE,
658 java_tree_code_length,
659 (LAST_JAVA_TREE_CODE -
660 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (int));
661 memcpy (tree_code_name + (int) LAST_AND_UNUSED_TREE_CODE,
663 (LAST_JAVA_TREE_CODE -
664 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (char *));
666 using_eh_for_cleanups ();
669 /* This doesn't do anything on purpose. It's used to satisfy the
670 print_error_function hook we don't print error messages with bogus
671 function prototypes. */
675 const char *s __attribute__ ((__unused__));
679 /* Called to install the PRINT_ERROR_FUNCTION hook differently
680 according to LEVEL. LEVEL is 1 during early parsing, when function
681 prototypes aren't fully resolved. print_error_function is set so it
682 doesn't print incomplete function prototypes. When LEVEL is 2,
683 function prototypes are fully resolved and can be printed when
686 void lang_init_source (level)
690 print_error_function = java_dummy_print;
692 print_error_function = lang_print_error;
698 flag_new_exceptions = 1;
699 flag_bounds_check = 1;
708 /* Hooks for print_node. */
711 print_lang_decl (file, node, indent)
712 FILE *file __attribute ((__unused__));
713 tree node __attribute ((__unused__));
714 int indent __attribute ((__unused__));
719 print_lang_type (file, node, indent)
720 FILE *file __attribute ((__unused__));
721 tree node __attribute ((__unused__));
722 int indent __attribute ((__unused__));
727 print_lang_identifier (file, node, indent)
728 FILE *file __attribute ((__unused__));
729 tree node __attribute ((__unused__));
730 int indent __attribute ((__unused__));
735 print_lang_statistics ()
739 /* used by print-tree.c */
742 lang_print_xnode (file, node, indent)
743 FILE *file __attribute ((__unused__));
744 tree node __attribute ((__unused__));
745 int indent __attribute ((__unused__));
749 /* Return the typed-based alias set for T, which may be an expression
750 or a type. Return -1 if we don't do anything special. */
753 lang_get_alias_set (t)
754 tree t ATTRIBUTE_UNUSED;