1 /* Separate lexical analyzer for GNU C++.
2 Copyright (C) 1987, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
3 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2008
4 Free Software Foundation, Inc.
5 Hacked by Michael Tiemann (tiemann@cygnus.com)
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3, or (at your option)
14 GCC is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
24 /* This file is the lexical analyzer for GNU C++. */
28 #include "coretypes.h"
41 static int interface_strcmp (const char *);
42 static void init_cp_pragma (void);
44 static tree parse_strconst_pragma (const char *, int);
45 static void handle_pragma_vtable (cpp_reader *);
46 static void handle_pragma_unit (cpp_reader *);
47 static void handle_pragma_interface (cpp_reader *);
48 static void handle_pragma_implementation (cpp_reader *);
49 static void handle_pragma_java_exceptions (cpp_reader *);
51 static void init_operators (void);
52 static void copy_lang_type (tree);
54 /* A constraint that can be tested at compile time. */
55 #define CONSTRAINT(name, expr) extern int constraint_##name [(expr) ? 1 : -1]
57 /* Functions and data structures for #pragma interface.
59 `#pragma implementation' means that the main file being compiled
60 is considered to implement (provide) the classes that appear in
61 its main body. I.e., if this is file "foo.cc", and class `bar'
62 is defined in "foo.cc", then we say that "foo.cc implements bar".
64 All main input files "implement" themselves automagically.
66 `#pragma interface' means that unless this file (of the form "foo.h"
67 is not presently being included by file "foo.cc", the
68 CLASSTYPE_INTERFACE_ONLY bit gets set. The effect is that none
69 of the vtables nor any of the inline functions defined in foo.h
72 There are cases when we want to link files such as "defs.h" and
73 "main.cc". In this case, we give "defs.h" a `#pragma interface',
74 and "main.cc" has `#pragma implementation "defs.h"'. */
79 struct impl_files *next;
82 static struct impl_files *impl_file_chain;
91 /* A mapping from tree codes to operator name information. */
92 operator_name_info_t operator_name_info[(int) LAST_CPLUS_TREE_CODE];
93 /* Similar, but for assignment operators. */
94 operator_name_info_t assignment_operator_name_info[(int) LAST_CPLUS_TREE_CODE];
96 /* Initialize data structures that keep track of operator names. */
98 #define DEF_OPERATOR(NAME, C, M, AR, AP) \
99 CONSTRAINT (C, sizeof "operator " + sizeof NAME <= 256);
100 #include "operators.def"
104 init_operators (void)
108 struct operator_name_info_t *oni;
110 #define DEF_OPERATOR(NAME, CODE, MANGLING, ARITY, ASSN_P) \
111 sprintf (buffer, ISALPHA (NAME[0]) ? "operator %s" : "operator%s", NAME); \
112 identifier = get_identifier (buffer); \
113 IDENTIFIER_OPNAME_P (identifier) = 1; \
116 ? &assignment_operator_name_info[(int) CODE] \
117 : &operator_name_info[(int) CODE]); \
118 oni->identifier = identifier; \
120 oni->mangled_name = MANGLING; \
123 #include "operators.def"
126 operator_name_info[(int) ERROR_MARK].identifier
127 = get_identifier ("<invalid operator>");
129 /* Handle some special cases. These operators are not defined in
130 the language, but can be produced internally. We may need them
131 for error-reporting. (Eventually, we should ensure that this
132 does not happen. Error messages involving these operators will
133 be confusing to users.) */
135 operator_name_info [(int) INIT_EXPR].name
136 = operator_name_info [(int) MODIFY_EXPR].name;
137 operator_name_info [(int) EXACT_DIV_EXPR].name = "(ceiling /)";
138 operator_name_info [(int) CEIL_DIV_EXPR].name = "(ceiling /)";
139 operator_name_info [(int) FLOOR_DIV_EXPR].name = "(floor /)";
140 operator_name_info [(int) ROUND_DIV_EXPR].name = "(round /)";
141 operator_name_info [(int) CEIL_MOD_EXPR].name = "(ceiling %)";
142 operator_name_info [(int) FLOOR_MOD_EXPR].name = "(floor %)";
143 operator_name_info [(int) ROUND_MOD_EXPR].name = "(round %)";
144 operator_name_info [(int) ABS_EXPR].name = "abs";
145 operator_name_info [(int) TRUTH_AND_EXPR].name = "strict &&";
146 operator_name_info [(int) TRUTH_OR_EXPR].name = "strict ||";
147 operator_name_info [(int) RANGE_EXPR].name = "...";
148 operator_name_info [(int) UNARY_PLUS_EXPR].name = "+";
150 assignment_operator_name_info [(int) EXACT_DIV_EXPR].name
152 assignment_operator_name_info [(int) CEIL_DIV_EXPR].name
154 assignment_operator_name_info [(int) FLOOR_DIV_EXPR].name
156 assignment_operator_name_info [(int) ROUND_DIV_EXPR].name
158 assignment_operator_name_info [(int) CEIL_MOD_EXPR].name
160 assignment_operator_name_info [(int) FLOOR_MOD_EXPR].name
162 assignment_operator_name_info [(int) ROUND_MOD_EXPR].name
166 /* The reserved keyword table. */
169 const char *const word;
170 ENUM_BITFIELD(rid) const rid : 16;
171 const unsigned int disable : 16;
174 /* Disable mask. Keywords are disabled if (reswords[i].disable & mask) is
176 #define D_EXT 0x01 /* GCC extension */
177 #define D_ASM 0x02 /* in C99, but has a switch to turn it off */
178 #define D_OBJC 0x04 /* Objective C++ only */
179 #define D_CXX0X 0x08 /* C++0x only */
181 CONSTRAINT(ridbits_fit, RID_LAST_MODIFIER < sizeof(unsigned long) * CHAR_BIT);
183 static const struct resword reswords[] =
185 { "_Complex", RID_COMPLEX, 0 },
186 { "__FUNCTION__", RID_FUNCTION_NAME, 0 },
187 { "__PRETTY_FUNCTION__", RID_PRETTY_FUNCTION_NAME, 0 },
188 { "__alignof", RID_ALIGNOF, 0 },
189 { "__alignof__", RID_ALIGNOF, 0 },
190 { "__asm", RID_ASM, 0 },
191 { "__asm__", RID_ASM, 0 },
192 { "__attribute", RID_ATTRIBUTE, 0 },
193 { "__attribute__", RID_ATTRIBUTE, 0 },
194 { "__builtin_offsetof", RID_OFFSETOF, 0 },
195 { "__builtin_va_arg", RID_VA_ARG, 0 },
196 { "__complex", RID_COMPLEX, 0 },
197 { "__complex__", RID_COMPLEX, 0 },
198 { "__const", RID_CONST, 0 },
199 { "__const__", RID_CONST, 0 },
200 { "__decltype", RID_DECLTYPE, 0 },
201 { "__extension__", RID_EXTENSION, 0 },
202 { "__func__", RID_C99_FUNCTION_NAME, 0 },
203 { "__has_nothrow_assign", RID_HAS_NOTHROW_ASSIGN, 0 },
204 { "__has_nothrow_constructor", RID_HAS_NOTHROW_CONSTRUCTOR, 0 },
205 { "__has_nothrow_copy", RID_HAS_NOTHROW_COPY, 0 },
206 { "__has_trivial_assign", RID_HAS_TRIVIAL_ASSIGN, 0 },
207 { "__has_trivial_constructor", RID_HAS_TRIVIAL_CONSTRUCTOR, 0 },
208 { "__has_trivial_copy", RID_HAS_TRIVIAL_COPY, 0 },
209 { "__has_trivial_destructor", RID_HAS_TRIVIAL_DESTRUCTOR, 0 },
210 { "__has_virtual_destructor", RID_HAS_VIRTUAL_DESTRUCTOR, 0 },
211 { "__is_abstract", RID_IS_ABSTRACT, 0 },
212 { "__is_base_of", RID_IS_BASE_OF, 0 },
213 { "__is_class", RID_IS_CLASS, 0 },
214 { "__is_convertible_to", RID_IS_CONVERTIBLE_TO, 0 },
215 { "__is_empty", RID_IS_EMPTY, 0 },
216 { "__is_enum", RID_IS_ENUM, 0 },
217 { "__is_pod", RID_IS_POD, 0 },
218 { "__is_polymorphic", RID_IS_POLYMORPHIC, 0 },
219 { "__is_union", RID_IS_UNION, 0 },
220 { "__imag", RID_IMAGPART, 0 },
221 { "__imag__", RID_IMAGPART, 0 },
222 { "__inline", RID_INLINE, 0 },
223 { "__inline__", RID_INLINE, 0 },
224 { "__label__", RID_LABEL, 0 },
225 { "__null", RID_NULL, 0 },
226 { "__real", RID_REALPART, 0 },
227 { "__real__", RID_REALPART, 0 },
228 { "__restrict", RID_RESTRICT, 0 },
229 { "__restrict__", RID_RESTRICT, 0 },
230 { "__signed", RID_SIGNED, 0 },
231 { "__signed__", RID_SIGNED, 0 },
232 { "__thread", RID_THREAD, 0 },
233 { "__typeof", RID_TYPEOF, 0 },
234 { "__typeof__", RID_TYPEOF, 0 },
235 { "__volatile", RID_VOLATILE, 0 },
236 { "__volatile__", RID_VOLATILE, 0 },
237 { "asm", RID_ASM, D_ASM },
238 { "auto", RID_AUTO, 0 },
239 { "bool", RID_BOOL, 0 },
240 { "break", RID_BREAK, 0 },
241 { "case", RID_CASE, 0 },
242 { "catch", RID_CATCH, 0 },
243 { "char", RID_CHAR, 0 },
244 { "class", RID_CLASS, 0 },
245 { "const", RID_CONST, 0 },
246 { "const_cast", RID_CONSTCAST, 0 },
247 { "continue", RID_CONTINUE, 0 },
248 { "decltype", RID_DECLTYPE, D_CXX0X },
249 { "default", RID_DEFAULT, 0 },
250 { "delete", RID_DELETE, 0 },
252 { "double", RID_DOUBLE, 0 },
253 { "dynamic_cast", RID_DYNCAST, 0 },
254 { "else", RID_ELSE, 0 },
255 { "enum", RID_ENUM, 0 },
256 { "explicit", RID_EXPLICIT, 0 },
257 { "export", RID_EXPORT, 0 },
258 { "extern", RID_EXTERN, 0 },
259 { "false", RID_FALSE, 0 },
260 { "float", RID_FLOAT, 0 },
261 { "for", RID_FOR, 0 },
262 { "friend", RID_FRIEND, 0 },
263 { "goto", RID_GOTO, 0 },
265 { "inline", RID_INLINE, 0 },
266 { "int", RID_INT, 0 },
267 { "long", RID_LONG, 0 },
268 { "mutable", RID_MUTABLE, 0 },
269 { "namespace", RID_NAMESPACE, 0 },
270 { "new", RID_NEW, 0 },
271 { "operator", RID_OPERATOR, 0 },
272 { "private", RID_PRIVATE, 0 },
273 { "protected", RID_PROTECTED, 0 },
274 { "public", RID_PUBLIC, 0 },
275 { "register", RID_REGISTER, 0 },
276 { "reinterpret_cast", RID_REINTCAST, 0 },
277 { "return", RID_RETURN, 0 },
278 { "short", RID_SHORT, 0 },
279 { "signed", RID_SIGNED, 0 },
280 { "sizeof", RID_SIZEOF, 0 },
281 { "static", RID_STATIC, 0 },
282 { "static_assert", RID_STATIC_ASSERT, D_CXX0X },
283 { "static_cast", RID_STATCAST, 0 },
284 { "struct", RID_STRUCT, 0 },
285 { "switch", RID_SWITCH, 0 },
286 { "template", RID_TEMPLATE, 0 },
287 { "this", RID_THIS, 0 },
288 { "throw", RID_THROW, 0 },
289 { "true", RID_TRUE, 0 },
290 { "try", RID_TRY, 0 },
291 { "typedef", RID_TYPEDEF, 0 },
292 { "typename", RID_TYPENAME, 0 },
293 { "typeid", RID_TYPEID, 0 },
294 { "typeof", RID_TYPEOF, D_ASM|D_EXT },
295 { "union", RID_UNION, 0 },
296 { "unsigned", RID_UNSIGNED, 0 },
297 { "using", RID_USING, 0 },
298 { "virtual", RID_VIRTUAL, 0 },
299 { "void", RID_VOID, 0 },
300 { "volatile", RID_VOLATILE, 0 },
301 { "wchar_t", RID_WCHAR, 0 },
302 { "while", RID_WHILE, 0 },
304 /* The remaining keywords are specific to Objective-C++. NB:
305 All of them will remain _disabled_, since they are context-
308 /* These ObjC keywords are recognized only immediately after
309 an '@'. NB: The following C++ keywords double as
310 ObjC keywords in this context: RID_CLASS, RID_PRIVATE,
311 RID_PROTECTED, RID_PUBLIC, RID_THROW, RID_TRY and RID_CATCH. */
312 { "compatibility_alias", RID_AT_ALIAS, D_OBJC },
313 { "defs", RID_AT_DEFS, D_OBJC },
314 { "encode", RID_AT_ENCODE, D_OBJC },
315 { "end", RID_AT_END, D_OBJC },
316 { "implementation", RID_AT_IMPLEMENTATION, D_OBJC },
317 { "interface", RID_AT_INTERFACE, D_OBJC },
318 { "protocol", RID_AT_PROTOCOL, D_OBJC },
319 { "selector", RID_AT_SELECTOR, D_OBJC },
320 { "finally", RID_AT_FINALLY, D_OBJC },
321 { "synchronized", RID_AT_SYNCHRONIZED, D_OBJC },
322 /* These are recognized only in protocol-qualifier context. */
323 { "bycopy", RID_BYCOPY, D_OBJC },
324 { "byref", RID_BYREF, D_OBJC },
325 { "in", RID_IN, D_OBJC },
326 { "inout", RID_INOUT, D_OBJC },
327 { "oneway", RID_ONEWAY, D_OBJC },
328 { "out", RID_OUT, D_OBJC },
336 int mask = ((flag_no_asm ? D_ASM : 0)
338 | (flag_no_gnu_keywords ? D_EXT : 0)
339 | ((cxx_dialect == cxx0x) ? 0 : D_CXX0X));
341 ridpointers = GGC_CNEWVEC (tree, (int) RID_MAX);
342 for (i = 0; i < ARRAY_SIZE (reswords); i++)
344 id = get_identifier (reswords[i].word);
345 C_RID_CODE (id) = reswords[i].rid;
346 ridpointers [(int) reswords[i].rid] = id;
347 if (! (reswords[i].disable & mask))
348 C_IS_RESERVED_WORD (id) = 1;
353 init_cp_pragma (void)
355 c_register_pragma (0, "vtable", handle_pragma_vtable);
356 c_register_pragma (0, "unit", handle_pragma_unit);
357 c_register_pragma (0, "interface", handle_pragma_interface);
358 c_register_pragma (0, "implementation", handle_pragma_implementation);
359 c_register_pragma ("GCC", "interface", handle_pragma_interface);
360 c_register_pragma ("GCC", "implementation", handle_pragma_implementation);
361 c_register_pragma ("GCC", "java_exceptions", handle_pragma_java_exceptions);
364 /* TRUE if a code represents a statement. */
366 bool statement_code_p[MAX_TREE_CODES];
368 /* Initialize the C++ front end. This function is very sensitive to
369 the exact order that things are done here. It would be nice if the
370 initialization done by this routine were moved to its subroutines,
371 and the ordering dependencies clarified and reduced. */
375 location_t saved_loc;
377 static const enum tree_code stmt_codes[] = {
378 CTOR_INITIALIZER, TRY_BLOCK, HANDLER,
379 EH_SPEC_BLOCK, USING_STMT, TAG_DEFN,
380 IF_STMT, CLEANUP_STMT, FOR_STMT,
381 WHILE_STMT, DO_STMT, BREAK_STMT,
382 CONTINUE_STMT, SWITCH_STMT, EXPR_STMT
385 memset (&statement_code_p, 0, sizeof (statement_code_p));
386 for (i = 0; i < ARRAY_SIZE (stmt_codes); i++)
387 statement_code_p[stmt_codes[i]] = true;
389 saved_loc = input_location;
390 input_location = BUILTINS_LOCATION;
394 init_cp_semantics ();
399 current_function_decl = NULL;
401 class_type_node = ridpointers[(int) RID_CLASS];
403 cxx_init_decl_processing ();
405 /* The fact that G++ uses COMDAT for many entities (inline
406 functions, template instantiations, virtual tables, etc.) mean
407 that it is fundamentally unreliable to try to make decisions
408 about whether or not to output a particular entity until the end
409 of the compilation. However, the inliner requires that functions
410 be provided to the back end if they are to be inlined.
411 Therefore, we always use unit-at-a-time mode; in that mode, we
412 can provide entities to the back end and it will decide what to
413 emit based on what is actually needed. */
414 flag_unit_at_a_time = 1;
416 if (c_common_init () == false)
418 input_location = saved_loc;
426 input_location = saved_loc;
430 /* Return nonzero if S is not considered part of an
431 INTERFACE/IMPLEMENTATION pair. Otherwise, return 0. */
434 interface_strcmp (const char* s)
436 /* Set the interface/implementation bits for this scope. */
437 struct impl_files *ifiles;
440 for (ifiles = impl_file_chain; ifiles; ifiles = ifiles->next)
442 const char *t1 = ifiles->filename;
445 if (*s1 != *t1 || *s1 == 0)
448 while (*s1 == *t1 && *s1 != 0)
455 /* Don't get faked out by xxx.yyy.cc vs xxx.zzz.cc. */
456 if (strchr (s1, '.') || strchr (t1, '.'))
459 if (*s1 == '\0' || s1[-1] != '.' || t1[-1] != '.')
472 /* Parse a #pragma whose sole argument is a string constant.
473 If OPT is true, the argument is optional. */
475 parse_strconst_pragma (const char* name, int opt)
480 t = pragma_lex (&result);
483 if (pragma_lex (&x) != CPP_EOF)
484 warning (0, "junk at end of #pragma %s", name);
488 if (t == CPP_EOF && opt)
491 error ("invalid #pragma %s", name);
492 return error_mark_node;
496 handle_pragma_vtable (cpp_reader* dfile ATTRIBUTE_UNUSED )
498 parse_strconst_pragma ("vtable", 0);
499 sorry ("#pragma vtable no longer supported");
503 handle_pragma_unit (cpp_reader* dfile ATTRIBUTE_UNUSED )
505 /* Validate syntax, but don't do anything. */
506 parse_strconst_pragma ("unit", 0);
510 handle_pragma_interface (cpp_reader* dfile ATTRIBUTE_UNUSED )
512 tree fname = parse_strconst_pragma ("interface", 1);
513 struct c_fileinfo *finfo;
514 const char *filename;
516 if (fname == error_mark_node)
519 filename = lbasename (input_filename);
521 filename = TREE_STRING_POINTER (fname);
523 finfo = get_fileinfo (input_filename);
525 if (impl_file_chain == 0)
527 /* If this is zero at this point, then we are
528 auto-implementing. */
529 if (main_input_filename == 0)
530 main_input_filename = input_filename;
533 finfo->interface_only = interface_strcmp (filename);
534 /* If MULTIPLE_SYMBOL_SPACES is set, we cannot assume that we can see
535 a definition in another file. */
536 if (!MULTIPLE_SYMBOL_SPACES || !finfo->interface_only)
537 finfo->interface_unknown = 0;
540 /* Note that we have seen a #pragma implementation for the key MAIN_FILENAME.
541 We used to only allow this at toplevel, but that restriction was buggy
542 in older compilers and it seems reasonable to allow it in the headers
543 themselves, too. It only needs to precede the matching #p interface.
545 We don't touch finfo->interface_only or finfo->interface_unknown;
546 the user must specify a matching #p interface for this to have
550 handle_pragma_implementation (cpp_reader* dfile ATTRIBUTE_UNUSED )
552 tree fname = parse_strconst_pragma ("implementation", 1);
553 const char *filename;
554 struct impl_files *ifiles = impl_file_chain;
556 if (fname == error_mark_node)
561 if (main_input_filename)
562 filename = main_input_filename;
564 filename = input_filename;
565 filename = lbasename (filename);
569 filename = TREE_STRING_POINTER (fname);
570 if (cpp_included_before (parse_in, filename, input_location))
571 warning (0, "#pragma implementation for %qs appears after "
572 "file is included", filename);
575 for (; ifiles; ifiles = ifiles->next)
577 if (! strcmp (ifiles->filename, filename))
582 ifiles = XNEW (struct impl_files);
583 ifiles->filename = xstrdup (filename);
584 ifiles->next = impl_file_chain;
585 impl_file_chain = ifiles;
589 /* Indicate that this file uses Java-personality exception handling. */
591 handle_pragma_java_exceptions (cpp_reader* dfile ATTRIBUTE_UNUSED)
594 if (pragma_lex (&x) != CPP_EOF)
595 warning (0, "junk at end of #pragma GCC java_exceptions");
597 choose_personality_routine (lang_java);
600 /* Issue an error message indicating that the lookup of NAME (an
601 IDENTIFIER_NODE) failed. Returns the ERROR_MARK_NODE. */
604 unqualified_name_lookup_error (tree name)
606 if (IDENTIFIER_OPNAME_P (name))
608 if (name != ansi_opname (ERROR_MARK))
609 error ("%qD not defined", name);
613 error ("%qD was not declared in this scope", name);
614 /* Prevent repeated error messages by creating a VAR_DECL with
615 this NAME in the innermost block scope. */
616 if (current_function_decl)
619 decl = build_decl (VAR_DECL, name, error_mark_node);
620 DECL_CONTEXT (decl) = current_function_decl;
621 push_local_binding (name, decl, 0);
622 /* Mark the variable as used so that we do not get warnings
623 about it being unused later. */
624 TREE_USED (decl) = 1;
628 return error_mark_node;
631 /* Like unqualified_name_lookup_error, but NAME is an unqualified-id
632 used as a function. Returns an appropriate expression for
636 unqualified_fn_lookup_error (tree name)
638 if (processing_template_decl)
640 /* In a template, it is invalid to write "f()" or "f(3)" if no
641 declaration of "f" is available. Historically, G++ and most
642 other compilers accepted that usage since they deferred all name
643 lookup until instantiation time rather than doing unqualified
644 name lookup at template definition time; explain to the user what
647 Note that we have the exact wording of the following message in
648 the manual (trouble.texi, node "Name lookup"), so they need to
650 permerror ("there are no arguments to %qD that depend on a template "
651 "parameter, so a declaration of %qD must be available",
654 if (!flag_permissive)
659 inform ("(if you use %<-fpermissive%>, G++ will accept your "
660 "code, but allowing the use of an undeclared name is "
668 return unqualified_name_lookup_error (name);
672 build_lang_decl (enum tree_code code, tree name, tree type)
676 t = build_decl (code, name, type);
677 retrofit_lang_decl (t);
679 /* All nesting of C++ functions is lexical; there is never a "static
680 chain" in the sense of GNU C nested functions. */
681 if (code == FUNCTION_DECL)
682 DECL_NO_STATIC_CHAIN (t) = 1;
687 /* Add DECL_LANG_SPECIFIC info to T. Called from build_lang_decl
688 and pushdecl (for functions generated by the back end). */
691 retrofit_lang_decl (tree t)
693 struct lang_decl *ld;
696 if (CAN_HAVE_FULL_LANG_DECL_P (t))
697 size = sizeof (struct lang_decl);
699 size = sizeof (struct lang_decl_flags);
701 ld = GGC_CNEWVAR (struct lang_decl, size);
703 ld->decl_flags.can_be_full = CAN_HAVE_FULL_LANG_DECL_P (t) ? 1 : 0;
704 ld->decl_flags.u1sel = TREE_CODE (t) == NAMESPACE_DECL ? 1 : 0;
705 ld->decl_flags.u2sel = 0;
706 if (ld->decl_flags.can_be_full)
707 ld->u.f.u3sel = TREE_CODE (t) == FUNCTION_DECL ? 1 : 0;
709 DECL_LANG_SPECIFIC (t) = ld;
710 if (current_lang_name == lang_name_cplusplus
711 || decl_linkage (t) == lk_none)
712 SET_DECL_LANGUAGE (t, lang_cplusplus);
713 else if (current_lang_name == lang_name_c)
714 SET_DECL_LANGUAGE (t, lang_c);
715 else if (current_lang_name == lang_name_java)
716 SET_DECL_LANGUAGE (t, lang_java);
720 #ifdef GATHER_STATISTICS
721 tree_node_counts[(int)lang_decl] += 1;
722 tree_node_sizes[(int)lang_decl] += size;
727 cxx_dup_lang_specific_decl (tree node)
730 struct lang_decl *ld;
732 if (! DECL_LANG_SPECIFIC (node))
735 if (!CAN_HAVE_FULL_LANG_DECL_P (node))
736 size = sizeof (struct lang_decl_flags);
738 size = sizeof (struct lang_decl);
739 ld = GGC_NEWVAR (struct lang_decl, size);
740 memcpy (ld, DECL_LANG_SPECIFIC (node), size);
741 DECL_LANG_SPECIFIC (node) = ld;
743 #ifdef GATHER_STATISTICS
744 tree_node_counts[(int)lang_decl] += 1;
745 tree_node_sizes[(int)lang_decl] += size;
749 /* Copy DECL, including any language-specific parts. */
752 copy_decl (tree decl)
756 copy = copy_node (decl);
757 cxx_dup_lang_specific_decl (copy);
761 /* Replace the shared language-specific parts of NODE with a new copy. */
764 copy_lang_type (tree node)
767 struct lang_type *lt;
769 if (! TYPE_LANG_SPECIFIC (node))
772 if (TYPE_LANG_SPECIFIC (node)->u.h.is_lang_type_class)
773 size = sizeof (struct lang_type);
775 size = sizeof (struct lang_type_ptrmem);
776 lt = GGC_NEWVAR (struct lang_type, size);
777 memcpy (lt, TYPE_LANG_SPECIFIC (node), size);
778 TYPE_LANG_SPECIFIC (node) = lt;
780 #ifdef GATHER_STATISTICS
781 tree_node_counts[(int)lang_type] += 1;
782 tree_node_sizes[(int)lang_type] += size;
786 /* Copy TYPE, including any language-specific parts. */
789 copy_type (tree type)
793 copy = copy_node (type);
794 copy_lang_type (copy);
799 cxx_make_type (enum tree_code code)
801 tree t = make_node (code);
803 /* Create lang_type structure. */
804 if (RECORD_OR_UNION_CODE_P (code)
805 || code == BOUND_TEMPLATE_TEMPLATE_PARM)
807 struct lang_type *pi = GGC_CNEW (struct lang_type);
809 TYPE_LANG_SPECIFIC (t) = pi;
810 pi->u.c.h.is_lang_type_class = 1;
812 #ifdef GATHER_STATISTICS
813 tree_node_counts[(int)lang_type] += 1;
814 tree_node_sizes[(int)lang_type] += sizeof (struct lang_type);
818 /* Set up some flags that give proper default behavior. */
819 if (RECORD_OR_UNION_CODE_P (code))
821 struct c_fileinfo *finfo = get_fileinfo (input_filename);
822 SET_CLASSTYPE_INTERFACE_UNKNOWN_X (t, finfo->interface_unknown);
823 CLASSTYPE_INTERFACE_ONLY (t) = finfo->interface_only;
830 make_class_type (enum tree_code code)
832 tree t = cxx_make_type (code);
833 SET_CLASS_TYPE_P (t, 1);
837 /* Returns true if we are currently in the main source file, or in a
838 template instantiation started from the main source file. */
841 in_main_input_context (void)
843 struct tinst_level *tl = outermost_tinst_level();
846 return strcmp (main_input_filename,
847 LOCATION_FILE (tl->locus)) == 0;
849 return strcmp (main_input_filename, input_filename) == 0;