283 lines
6.1 KiB
C
283 lines
6.1 KiB
C
/* Language-specific hook definitions for C front end.
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Copyright (C) 1991, 1995, 1997, 1998,
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1999, 2000 Free Software Foundation, Inc.
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This file is part of GNU CC.
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GNU CC is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU CC is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU CC; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include "config.h"
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#include "system.h"
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#include "tree.h"
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#include "function.h"
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#include "input.h"
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#include "c-tree.h"
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#include "c-lex.h"
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#include "toplev.h"
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#include "diagnostic.h"
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#include "output.h"
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#include "flags.h"
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#include "ggc.h"
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static int c_tree_printer PARAMS ((output_buffer *));
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#if USE_CPPLIB
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#include "cpplib.h"
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extern char *yy_cur;
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extern cpp_reader parse_in;
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extern cpp_options parse_options;
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#endif
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/* Each of the functions defined here
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is an alternative to a function in objc-actions.c. */
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int
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lang_decode_option (argc, argv)
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int argc;
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char **argv;
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{
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return c_decode_option (argc, argv);
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}
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void
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lang_init_options ()
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{
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#if USE_CPPLIB
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cpp_reader_init (&parse_in);
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parse_in.opts = &parse_options;
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cpp_options_init (&parse_options);
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#endif
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/* Mark as "unspecified". */
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flag_bounds_check = -1;
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}
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void
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lang_init ()
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{
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/* If still "unspecified", make it match -fbounded-pointers. */
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if (flag_bounds_check < 0)
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flag_bounds_check = flag_bounded_pointers;
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/* If still unspecified, make it match pedantic && -std=c99. */
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if (mesg_implicit_function_declaration < 0)
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{
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if (pedantic && flag_isoc99)
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mesg_implicit_function_declaration = flag_pedantic_errors ? 2 : 1;
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else
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mesg_implicit_function_declaration = 0;
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}
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/* the beginning of the file is a new line; check for # */
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/* With luck, we discover the real source file's name from that
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and put it in input_filename. */
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#if !USE_CPPLIB
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ungetc (check_newline (), finput);
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#else
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check_newline ();
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yy_cur--;
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#endif
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save_lang_status = &push_c_function_context;
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restore_lang_status = &pop_c_function_context;
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mark_lang_status = &mark_c_function_context;
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lang_printer = c_tree_printer;
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c_parse_init ();
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}
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void
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lang_finish ()
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{
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}
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const char *
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lang_identify ()
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{
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return "c";
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}
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void
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print_lang_statistics ()
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{
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}
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/* used by print-tree.c */
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void
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lang_print_xnode (file, node, indent)
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FILE *file ATTRIBUTE_UNUSED;
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tree node ATTRIBUTE_UNUSED;
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int indent ATTRIBUTE_UNUSED;
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{
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}
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/* Used by c-lex.c, but only for objc. */
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tree
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lookup_interface (arg)
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tree arg ATTRIBUTE_UNUSED;
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{
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return 0;
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}
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tree
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is_class_name (arg)
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tree arg ATTRIBUTE_UNUSED;
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{
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return 0;
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}
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void
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maybe_objc_check_decl (decl)
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tree decl ATTRIBUTE_UNUSED;
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{
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}
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int
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maybe_objc_comptypes (lhs, rhs, reflexive)
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tree lhs ATTRIBUTE_UNUSED;
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tree rhs ATTRIBUTE_UNUSED;
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int reflexive ATTRIBUTE_UNUSED;
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{
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return -1;
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}
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tree
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maybe_objc_method_name (decl)
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tree decl ATTRIBUTE_UNUSED;
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{
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return 0;
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}
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tree
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maybe_building_objc_message_expr ()
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{
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return 0;
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}
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int
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recognize_objc_keyword ()
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{
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return 0;
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}
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/* Used by c-typeck.c (build_external_ref), but only for objc. */
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tree
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lookup_objc_ivar (id)
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tree id ATTRIBUTE_UNUSED;
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{
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return 0;
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}
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/* Called at end of parsing, but before end-of-file processing. */
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void
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finish_file ()
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{
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#ifndef ASM_OUTPUT_CONSTRUCTOR
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extern tree static_ctors;
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#endif
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#ifndef ASM_OUTPUT_DESTRUCTOR
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extern tree static_dtors;
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#endif
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extern tree build_function_call PARAMS ((tree, tree));
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#if !defined(ASM_OUTPUT_CONSTRUCTOR) || !defined(ASM_OUTPUT_DESTRUCTOR)
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tree void_list_node_1 = build_tree_list (NULL_TREE, void_type_node);
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#endif
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#ifndef ASM_OUTPUT_CONSTRUCTOR
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if (static_ctors)
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{
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tree fnname = get_file_function_name ('I');
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start_function (void_list_node_1,
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build_parse_node (CALL_EXPR, fnname,
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tree_cons (NULL_TREE, NULL_TREE,
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void_list_node_1),
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NULL_TREE),
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NULL_TREE, NULL_TREE);
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fnname = DECL_ASSEMBLER_NAME (current_function_decl);
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store_parm_decls ();
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for (; static_ctors; static_ctors = TREE_CHAIN (static_ctors))
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expand_expr_stmt (build_function_call (TREE_VALUE (static_ctors),
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NULL_TREE));
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finish_function (0);
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assemble_constructor (IDENTIFIER_POINTER (fnname));
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}
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#endif
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#ifndef ASM_OUTPUT_DESTRUCTOR
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if (static_dtors)
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{
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tree fnname = get_file_function_name ('D');
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start_function (void_list_node_1,
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build_parse_node (CALL_EXPR, fnname,
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tree_cons (NULL_TREE, NULL_TREE,
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void_list_node_1),
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NULL_TREE),
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NULL_TREE, NULL_TREE);
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fnname = DECL_ASSEMBLER_NAME (current_function_decl);
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store_parm_decls ();
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for (; static_dtors; static_dtors = TREE_CHAIN (static_dtors))
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expand_expr_stmt (build_function_call (TREE_VALUE (static_dtors),
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NULL_TREE));
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finish_function (0);
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assemble_destructor (IDENTIFIER_POINTER (fnname));
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}
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#endif
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}
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/* Called during diagnostic message formatting process to print a
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source-level entity onto BUFFER. The meaning of the format specifiers
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is as follows:
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%D: a general decl,
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%F: a function declaration,
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%T: a type.
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These format specifiers form a subset of the format specifiers set used
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by the C++ front-end.
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Please notice when called, the `%' part was already skipped by the
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diagnostic machinery. */
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static int
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c_tree_printer (buffer)
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output_buffer *buffer;
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{
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tree t = va_arg (output_buffer_format_args (buffer), tree);
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switch (*output_buffer_text_cursor (buffer))
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{
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case 'D':
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case 'F':
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case 'T':
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{
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const char *n = DECL_NAME (t)
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? (*decl_printable_name) (t, 2)
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: "({anonymous})";
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output_add_string (buffer, n);
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}
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return 1;
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default:
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return 0;
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}
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}
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