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"
40 #include "diagnostic.h"
49 static void java_init PARAMS ((void));
50 static void java_init_options PARAMS ((void));
51 static int java_decode_option PARAMS ((int, char **));
52 static void put_decl_string PARAMS ((const char *, int));
53 static void put_decl_node PARAMS ((tree));
54 static void java_dummy_print PARAMS ((diagnostic_context *, const char *));
55 static void lang_print_error PARAMS ((diagnostic_context *, const char *));
56 static int process_option_with_no PARAMS ((char *,
57 struct string_option *,
60 #ifndef TARGET_OBJECT_SUFFIX
61 # define TARGET_OBJECT_SUFFIX ".o"
64 /* Table indexed by tree code giving a string containing a character
65 classifying the tree code. Possibilities are
66 t, d, s, c, r, <, 1 and 2. See java/java-tree.def for details. */
68 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
70 char java_tree_code_type[] = {
72 #include "java-tree.def"
76 /* Table indexed by tree code giving number of expression
77 operands beyond the fixed part of the node structure.
78 Not used for types or decls. */
80 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
82 int java_tree_code_length[] = {
84 #include "java-tree.def"
88 /* Names of tree components.
89 Used for printing out the tree and error messages. */
90 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
92 const char *java_tree_code_name[] = {
94 #include "java-tree.def"
98 int compiling_from_source;
100 const char * const language_string = "GNU Java";
102 int flag_emit_class_files = 0;
104 /* Nonzero if input file is a file with a list of filenames to compile. */
106 int flag_filelist_file = 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, call a library routine to do integer divisions. */
120 int flag_use_divide_subroutine = 1;
122 /* When non zero, generate code for the Boehm GC. */
123 int flag_use_boehm_gc = 0;
125 /* When non zero, assume the runtime uses a hash table to map an
126 object to its synchronization structure. */
127 int flag_hash_synchronization;
129 /* When non zero, assume all native functions are implemented with
133 /* When non zero, warn when source file is newer than matching class
137 /* When non zero, generate checks for references to NULL. */
138 int flag_check_references = 0;
140 /* The encoding of the source file. */
141 const char *current_encoding = NULL;
143 /* When non zero, report the now deprecated empty statements. */
144 int flag_extraneous_semicolon;
146 /* When non zero, always check for a non gcj generated classes archive. */
147 int flag_force_classes_archive_check;
149 /* Table of language-dependent -f options.
150 STRING is the option name. VARIABLE is the address of the variable.
151 ON_VALUE is the value to store in VARIABLE
152 if `-fSTRING' is seen as an option.
153 (If `-fno-STRING' is seen as an option, the opposite value is stored.) */
155 static struct string_option
158 {"emit-class-file", &flag_emit_class_files, 1},
159 {"emit-class-files", &flag_emit_class_files, 1},
160 {"filelist-file", &flag_filelist_file, 1},
161 {"use-divide-subroutine", &flag_use_divide_subroutine, 1},
162 {"use-boehm-gc", &flag_use_boehm_gc, 1},
163 {"hash-synchronization", &flag_hash_synchronization, 1},
164 {"jni", &flag_jni, 1},
165 {"check-references", &flag_check_references, 1},
166 {"force-classes-archive-check", &flag_force_classes_archive_check, 1}
169 static struct string_option
172 { "redundant-modifiers", &flag_redundant, 1 },
173 { "extraneous-semicolon", &flag_extraneous_semicolon, 1 },
174 { "out-of-date", &flag_newer, 1 }
179 /* Variable controlling how dependency tracking is enabled in
181 static int dependency_tracking = 0;
183 /* Flag values for DEPENDENCY_TRACKING. */
184 #define DEPEND_SET_FILE 1
185 #define DEPEND_ENABLE 2
186 #define DEPEND_TARGET_SET 4
187 #define DEPEND_FILE_ALREADY_SET 8
189 /* Each front end provides its own. */
190 struct lang_hooks lang_hooks = {java_init,
191 NULL, /* java_finish */
194 NULL /* post_options */};
196 /* Process an option that can accept a `no-' form.
197 Return 1 if option found, 0 otherwise. */
199 process_option_with_no (p, table, table_size)
201 struct string_option *table;
206 for (j = 0; j < table_size; j++)
208 if (!strcmp (p, table[j].string))
210 *table[j].variable = table[j].on_value;
213 if (p[0] == 'n' && p[1] == 'o' && p[2] == '-'
214 && ! strcmp (p+3, table[j].string))
216 *table[j].variable = ! table[j].on_value;
225 * process java-specific compiler command-line options
226 * return 0, but do not complain if the option is not recognised.
229 java_decode_option (argc, argv)
230 int argc __attribute__ ((__unused__));
235 #define CLARG "-fassume-compiled="
236 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
238 add_assume_compiled (p + sizeof (CLARG) - 1, 0);
242 #define CLARG "-fno-assume-compiled="
243 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
245 add_assume_compiled (p + sizeof (CLARG) - 1, 1);
249 #define CLARG "-fassume-compiled"
250 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
252 add_assume_compiled ("", 0);
256 #define CLARG "-fno-assume-compiled"
257 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
259 add_assume_compiled ("", 1);
263 #define CLARG "-fclasspath="
264 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
266 jcf_path_classpath_arg (p + sizeof (CLARG) - 1);
270 #define CLARG "-fCLASSPATH="
271 if (strncmp (p, CLARG, sizeof (CLARG) - 1) == 0)
273 jcf_path_CLASSPATH_arg (p + sizeof (CLARG) - 1);
277 else if (strncmp (p, "-I", 2) == 0)
279 jcf_path_include_arg (p + 2);
283 #define ARG "-foutput-class-dir="
284 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
286 jcf_write_base_directory = p + sizeof (ARG) - 1;
290 #define ARG "-fencoding="
291 if (strncmp (p, ARG, sizeof (ARG) - 1) == 0)
293 current_encoding = p + sizeof (ARG) - 1;
298 if (p[0] == '-' && p[1] == 'f')
300 /* Some kind of -f option.
301 P's value is the option sans `-f'.
302 Search for it in the table of options. */
304 return process_option_with_no (p, lang_f_options,
305 ARRAY_SIZE (lang_f_options));
308 if (strcmp (p, "-Wall") == 0)
312 flag_extraneous_semicolon = 1;
313 /* When -Wall given, enable -Wunused. We do this because the C
314 compiler does it, and people expect it. */
319 if (p[0] == '-' && p[1] == 'W')
321 /* Skip `-W' and see if we accept the option or its `no-' form. */
323 return process_option_with_no (p, lang_W_options,
324 ARRAY_SIZE (lang_W_options));
327 if (strcmp (p, "-MD") == 0)
329 jcf_dependency_init (1);
330 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
333 else if (strcmp (p, "-MMD") == 0)
335 jcf_dependency_init (0);
336 dependency_tracking |= DEPEND_SET_FILE | DEPEND_ENABLE;
339 else if (strcmp (p, "-M") == 0)
341 jcf_dependency_init (1);
342 dependency_tracking |= DEPEND_ENABLE;
345 else if (strcmp (p, "-MM") == 0)
347 jcf_dependency_init (0);
348 dependency_tracking |= DEPEND_ENABLE;
351 else if (strcmp (p, "-MP") == 0)
353 jcf_dependency_print_dummies ();
356 else if (strcmp (p, "-MT") == 0)
358 jcf_dependency_set_target (argv[1]);
359 dependency_tracking |= DEPEND_TARGET_SET;
362 else if (strcmp (p, "-MF") == 0)
364 jcf_dependency_set_dep_file (argv[1]);
365 dependency_tracking |= DEPEND_FILE_ALREADY_SET;
372 /* Global open file. */
376 init_parse (filename)
377 const char *filename;
379 /* Open input file. */
381 if (filename == 0 || !strcmp (filename, "-"))
386 if (dependency_tracking)
387 error ("can't do dependency tracking with input from stdin");
391 if (dependency_tracking)
395 /* If the target is set and the output filename is set, then
396 there's no processing to do here. Otherwise we must
397 compute one or the other. */
398 if (! ((dependency_tracking & DEPEND_TARGET_SET)
399 && (dependency_tracking & DEPEND_FILE_ALREADY_SET)))
401 dot = strrchr (filename, '.');
403 error ("couldn't determine target name for dependency tracking");
406 char *buf = (char *) xmalloc (dot - filename +
407 3 + sizeof (TARGET_OBJECT_SUFFIX));
408 strncpy (buf, filename, dot - filename);
410 /* If emitting class files, we might have multiple
411 targets. The class generation code takes care of
412 registering them. Otherwise we compute the
414 if ((dependency_tracking & DEPEND_TARGET_SET))
416 else if (flag_emit_class_files)
417 jcf_dependency_set_target (NULL);
420 strcpy (buf + (dot - filename), TARGET_OBJECT_SUFFIX);
421 jcf_dependency_set_target (buf);
424 if ((dependency_tracking & DEPEND_FILE_ALREADY_SET))
426 else if ((dependency_tracking & DEPEND_SET_FILE))
428 strcpy (buf + (dot - filename), ".d");
429 jcf_dependency_set_dep_file (buf);
432 jcf_dependency_set_dep_file ("-");
448 jcf_dependency_write ();
451 /* Buffer used by lang_printable_name. */
452 static char *decl_buf = NULL;
454 /* Allocated size of decl_buf. */
455 static int decl_buflen = 0;
457 /* Length of used part of decl_buf; position for next character. */
458 static int decl_bufpos = 0;
460 /* Append the string STR to decl_buf.
461 It length is given by LEN; -1 means the string is nul-terminated. */
464 put_decl_string (str, len)
470 if (decl_bufpos + len >= decl_buflen)
472 if (decl_buf == NULL)
474 decl_buflen = len + 100;
475 decl_buf = (char *) xmalloc (decl_buflen);
480 decl_buf = (char *) xrealloc (decl_buf, decl_buflen);
483 strcpy (decl_buf + decl_bufpos, str);
487 /* Append to decl_buf a printable name for NODE. */
494 if (TREE_CODE (node) == POINTER_TYPE)
496 node = TREE_TYPE (node);
499 if (TREE_CODE_CLASS (TREE_CODE (node)) == 'd'
500 && DECL_NAME (node) != NULL_TREE)
502 /* We want to print the type the DECL belongs to. We don't do
503 that when we handle constructors. */
504 if (TREE_CODE (node) == FUNCTION_DECL
505 && ! DECL_CONSTRUCTOR_P (node)
506 && ! DECL_ARTIFICIAL (node) && DECL_CONTEXT (node))
508 put_decl_node (TYPE_NAME (DECL_CONTEXT (node)));
509 put_decl_string (".", 1);
511 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 (context, file)
592 diagnostic_context *context __attribute__((__unused__));
595 static tree last_error_function_context = NULL_TREE;
596 static tree last_error_function = NULL;
597 static int initialized_p;
599 /* Register LAST_ERROR_FUNCTION_CONTEXT and LAST_ERROR_FUNCTION with
600 the garbage collector. */
603 ggc_add_tree_root (&last_error_function_context, 1);
604 ggc_add_tree_root (&last_error_function, 1);
608 if (current_function_decl != NULL
609 && DECL_CONTEXT (current_function_decl) != last_error_function_context)
612 fprintf (stderr, "%s: ", file);
614 last_error_function_context = DECL_CONTEXT (current_function_decl);
615 fprintf (stderr, "In class `%s':\n",
616 lang_printable_name (last_error_function_context, 0));
618 if (last_error_function != current_function_decl)
621 fprintf (stderr, "%s: ", file);
623 if (current_function_decl == NULL)
624 fprintf (stderr, "At top level:\n");
627 const char *name = lang_printable_name (current_function_decl, 2);
628 fprintf (stderr, "In method `%s':\n", name);
631 last_error_function = current_function_decl;
640 extern int flag_minimal_debug;
641 flag_minimal_debug = 0;
647 decl_printable_name = lang_printable_name;
648 print_error_function = lang_print_error;
649 lang_expand_expr = java_lang_expand_expr;
651 /* Append to Gcc tree node definition arrays */
653 memcpy (tree_code_type + (int) LAST_AND_UNUSED_TREE_CODE,
655 (int)LAST_JAVA_TREE_CODE - (int)LAST_AND_UNUSED_TREE_CODE);
656 memcpy (tree_code_length + (int) LAST_AND_UNUSED_TREE_CODE,
657 java_tree_code_length,
658 (LAST_JAVA_TREE_CODE -
659 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (int));
660 memcpy (tree_code_name + (int) LAST_AND_UNUSED_TREE_CODE,
662 (LAST_JAVA_TREE_CODE -
663 (int)LAST_AND_UNUSED_TREE_CODE) * sizeof (char *));
665 using_eh_for_cleanups ();
668 /* This doesn't do anything on purpose. It's used to satisfy the
669 print_error_function hook we don't print error messages with bogus
670 function prototypes. */
673 java_dummy_print (c, s)
674 diagnostic_context *c __attribute__ ((__unused__));
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_bounds_check = 1;
700 flag_non_call_exceptions = 1;
709 /* Hooks for print_node. */
712 print_lang_decl (file, node, indent)
713 FILE *file __attribute ((__unused__));
714 tree node __attribute ((__unused__));
715 int indent __attribute ((__unused__));
720 print_lang_type (file, node, indent)
721 FILE *file __attribute ((__unused__));
722 tree node __attribute ((__unused__));
723 int indent __attribute ((__unused__));
728 print_lang_identifier (file, node, indent)
729 FILE *file __attribute ((__unused__));
730 tree node __attribute ((__unused__));
731 int indent __attribute ((__unused__));
736 print_lang_statistics ()
740 /* used by print-tree.c */
743 lang_print_xnode (file, node, indent)
744 FILE *file __attribute ((__unused__));
745 tree node __attribute ((__unused__));
746 int indent __attribute ((__unused__));
750 /* Return the typed-based alias set for T, which may be an expression
751 or a type. Return -1 if we don't do anything special. */
754 lang_get_alias_set (t)
755 tree t ATTRIBUTE_UNUSED;