1 /* Language-specific hook definitions for C front end.
2 Copyright (C) 1991, 1995, 1997, 1998,
3 1999, 2000, 2001 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. */
29 #include "diagnostic.h"
39 static int c_tree_printer PARAMS ((output_buffer *));
40 static int c_missing_noreturn_ok_p PARAMS ((tree));
41 static void c_post_options PARAMS ((void));
43 /* Each front end provides its own. */
44 struct lang_hooks lang_hooks = {c_post_options};
46 /* Post-switch processing. */
52 /* Each of the functions defined here
53 is an alternative to a function in objc-actions.c. */
55 lang_decode_option (argc, argv)
59 return c_decode_option (argc, argv);
65 parse_in = cpp_create_reader (CLK_GNUC89);
67 /* Mark as "unspecified". */
68 flag_bounds_check = -1;
74 c_common_lang_init ();
76 /* If still unspecified, make it match pedantic && -std=c99. */
77 if (mesg_implicit_function_declaration < 0)
79 if (pedantic && flag_isoc99)
80 mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1;
82 mesg_implicit_function_declaration = 0;
85 save_lang_status = &push_c_function_context;
86 restore_lang_status = &pop_c_function_context;
87 mark_lang_status = &mark_c_function_context;
88 lang_expand_expr = &c_expand_expr;
89 lang_safe_from_p = &c_safe_from_p;
90 lang_printer = &c_tree_printer;
91 lang_expand_decl_stmt = &c_expand_decl_stmt;
92 lang_missing_noreturn_ok_p = &c_missing_noreturn_ok_p;
109 print_lang_statistics ()
113 /* used by print-tree.c */
116 lang_print_xnode (file, node, indent)
117 FILE *file ATTRIBUTE_UNUSED;
118 tree node ATTRIBUTE_UNUSED;
119 int indent ATTRIBUTE_UNUSED;
123 /* Used by c-lex.c, but only for objc. */
126 lookup_interface (arg)
127 tree arg ATTRIBUTE_UNUSED;
134 tree arg ATTRIBUTE_UNUSED;
140 maybe_objc_check_decl (decl)
141 tree decl ATTRIBUTE_UNUSED;
146 maybe_objc_comptypes (lhs, rhs, reflexive)
147 tree lhs ATTRIBUTE_UNUSED;
148 tree rhs ATTRIBUTE_UNUSED;
149 int reflexive ATTRIBUTE_UNUSED;
155 maybe_objc_method_name (decl)
156 tree decl ATTRIBUTE_UNUSED;
162 maybe_building_objc_message_expr ()
168 recognize_objc_keyword ()
173 /* Used by c-typeck.c (build_external_ref), but only for objc. */
176 lookup_objc_ivar (id)
177 tree id ATTRIBUTE_UNUSED;
182 #if !defined(ASM_OUTPUT_CONSTRUCTOR) || !defined(ASM_OUTPUT_DESTRUCTOR)
183 extern tree static_ctors;
184 extern tree static_dtors;
186 static tree start_cdtor PARAMS ((int));
187 static void finish_cdtor PARAMS ((tree));
190 start_cdtor (method_type)
193 tree fnname = get_file_function_name (method_type);
194 tree void_list_node_1 = build_tree_list (NULL_TREE, void_type_node);
197 start_function (void_list_node_1,
198 build_parse_node (CALL_EXPR, fnname,
199 tree_cons (NULL_TREE, NULL_TREE,
202 NULL_TREE, NULL_TREE);
205 current_function_cannot_inline
206 = "static constructors and destructors cannot be inlined";
208 body = c_begin_compound_stmt ();
212 add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0);
224 scope = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0);
225 block = poplevel (0, 0, 0);
226 SCOPE_STMT_BLOCK (TREE_PURPOSE (scope)) = block;
227 SCOPE_STMT_BLOCK (TREE_VALUE (scope)) = block;
229 RECHAIN_STMTS (body, COMPOUND_BODY (body));
235 /* Called at end of parsing, but before end-of-file processing. */
240 #ifndef ASM_OUTPUT_CONSTRUCTOR
243 tree body = start_cdtor ('I');
245 for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
246 c_expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
252 #ifndef ASM_OUTPUT_DESTRUCTOR
255 tree body = start_cdtor ('D');
257 for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
258 c_expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
266 (*back_end_hook) (getdecls ());
268 if (flag_dump_translation_unit)
269 dump_node_to_file (getdecls (), flag_dump_translation_unit);
272 /* Called during diagnostic message formatting process to print a
273 source-level entity onto BUFFER. The meaning of the format specifiers
276 %F: a function declaration,
279 These format specifiers form a subset of the format specifiers set used
280 by the C++ front-end.
281 Please notice when called, the `%' part was already skipped by the
282 diagnostic machinery. */
284 c_tree_printer (buffer)
285 output_buffer *buffer;
287 tree t = va_arg (output_buffer_format_args (buffer), tree);
289 switch (*output_buffer_text_cursor (buffer))
295 const char *n = DECL_NAME (t)
296 ? (*decl_printable_name) (t, 2)
298 output_add_string (buffer, n);
308 c_missing_noreturn_ok_p (decl)
311 /* A missing noreturn is not ok for freestanding implementations and
312 ok for the `main' function in hosted implementations. */
313 return flag_hosted && MAIN_NAME_P (DECL_ASSEMBLER_NAME (decl));