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- /* Definitions for C parsing and type checking.
- Copyright (C) 1987 Free Software Foundation, Inc.
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 1, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
- /* Language-dependent contents of an identifier. */
-
- struct lang_identifier
- {
- struct tree_identifier ignore;
- tree global_value, local_value, label_value, implicit_decl;
- tree error_locus;
- };
-
- /* Macros for access to language-specific slots in an identifier. */
-
- #define IDENTIFIER_GLOBAL_VALUE(NODE) \
- (((struct lang_identifier *)(NODE))->global_value)
- #define IDENTIFIER_LOCAL_VALUE(NODE) \
- (((struct lang_identifier *)(NODE))->local_value)
- #define IDENTIFIER_LABEL_VALUE(NODE) \
- (((struct lang_identifier *)(NODE))->label_value)
- #define IDENTIFIER_IMPLICIT_DECL(NODE) \
- (((struct lang_identifier *)(NODE))->implicit_decl)
- #define IDENTIFIER_ERROR_LOCUS(NODE) \
- (((struct lang_identifier *)(NODE))->error_locus)
-
- /* Nonzero means reject anything that ANSI standard C forbids. */
- extern int pedantic;
-
- /* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
- #define C_TYPE_FIELDS_READONLY(type) TYPE_SEP_UNIT (type)
-
- /* in c-typecheck.c */
- extern tree build_component_ref(), build_conditional_expr(), build_compound_expr();
- extern tree build_unary_op(), build_binary_op(), build_function_call();
- extern tree build_binary_op_nodefault ();
- extern tree build_indirect_ref(), build_array_ref(), build_c_cast();
- extern tree build_modify_expr();
- extern tree c_sizeof (), c_alignof ();
- extern void store_init_value ();
- extern tree digest_init ();
- extern tree c_expand_start_case ();
- extern tree default_conversion ();
-
- /* Given two integer or real types, return the type for their sum.
- Given two compatible ANSI C types, returns the merged type. */
-
- extern tree commontype ();
-
- /* in c-decl.c */
- extern tree build_label ();
-
- extern int start_function ();
- extern void finish_function ();
- extern void store_parm_decls ();
- extern tree get_parm_info ();
-
- extern void pushlevel ();
- extern tree poplevel ();
-
- extern tree groktypename(), lookup_name();
-
- extern tree lookup_label(), define_label();
-
- extern tree implicitly_declare(), getdecls(), gettags ();
-
- extern tree start_decl();
- extern void finish_decl();
-
- extern tree start_struct(), finish_struct(), xref_tag();
- extern tree grokfield();
-
- extern tree start_enum(), finish_enum();
- extern tree build_enumerator();
-
- extern tree make_index_type ();
-
- extern tree double_type_node, long_double_type_node, float_type_node;
- extern tree char_type_node, unsigned_char_type_node, signed_char_type_node;
-
- extern tree short_integer_type_node, short_unsigned_type_node;
- extern tree long_integer_type_node, long_unsigned_type_node;
- extern tree long_long_integer_type_node, long_long_unsigned_type_node;
- extern tree unsigned_type_node;
- extern tree string_type_node, char_array_type_node, int_array_type_node;
-
- extern int current_function_returns_value;
- extern int current_function_returns_null;
-
- extern tree ridpointers[];
-
- /* Nonzero means `$' can be in an identifier. */
-
- extern int dollars_in_ident;
-
- /* Nonzero means allow type mismatches in conditional expressions;
- just make their values `void'. */
-
- extern int flag_cond_mismatch;
-
- /* Nonzero means don't recognize the keyword `asm'. */
-
- extern int flag_no_asm;
-
- /* Nonzero means warn about implicit declarations. */
-
- extern int warn_implicit;
-
- /* Nonzero means warn about function definitions that default the return type
- or that use a null return and have a return-type other than void. */
-
- extern int warn_return_type;
-
- /* Nonzero means give string constants the type `const char *'
- to get extra warnings from them. These warnings will be too numerous
- to be useful, except in thoroughly ANSIfied programs. */
-
- extern int warn_write_strings;
-
- /* Nonzero means warn about sizeof(function) or addition/subtraction
- of function pointers. */
-
- extern int warn_pointer_arith;
-
- /* Nonzero means warn for all old-style non-prototype function decls. */
-
- extern int warn_strict_prototypes;
-
- /* Nonzero means warn about pointer casts that can drop a type qualifier
- from the pointer target type. */
-
- extern int warn_cast_qual;
-
- /* Nonzero means do some things the same way PCC does. */
-
- extern int flag_traditional;
-