/* Definitions for C parsing and type checking.
- Copyright (C) 1987, 93-95, 97-99, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
/* The limbo_value is used for block level extern declarations, which need
to be type checked against subsequent extern declarations. They can't
- be referenced after they fall out of scope, so they can't be global. */
+ be referenced after they fall out of scope, so they can't be global.
+
+ The rid_code field is used for keywords. It is in all
+ lang_identifier nodes, because some keywords are only special in a
+ particular context. */
struct lang_identifier
{
struct tree_identifier ignore;
tree global_value, local_value, label_value, implicit_decl;
tree error_locus, limbo_value;
+ enum rid rid_code;
+};
+
+/* Wrapping c_lang_decl in another struct is an unfortunate
+ necessity. */
+
+struct lang_decl
+{
+ struct c_lang_decl base;
};
/* Macros for access to language-specific slots in an identifier. */
nonzero if the definition of the type has already started. */
#define C_TYPE_BEING_DEFINED(type) TYPE_LANG_FLAG_0 (type)
-/* C types are partitioned into three subsets: object, function, and
- incomplete types. */
-#define C_TYPE_OBJECT_P(type) \
- (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type))
-
-#define C_TYPE_FUNCTION_P(type) \
- (TREE_CODE (type) == FUNCTION_TYPE)
+/* In an IDENTIFIER_NODE, nonzero if this identifier is actually a
+ keyword. C_RID_CODE (node) is then the RID_* value of the keyword,
+ and C_RID_YYCODE is the token number wanted by Yacc. */
-#define C_TYPE_INCOMPLETE_P(type) \
- (TREE_CODE (type) != FUNCTION_TYPE && TYPE_SIZE (type) == 0)
-
-/* For convenience we define a single macro to identify the class of
- object or incomplete types. */
-#define C_TYPE_OBJECT_OR_INCOMPLETE_P(type) \
- (!C_TYPE_FUNCTION_P (type))
+#define C_IS_RESERVED_WORD(id) TREE_LANG_FLAG_0 (id)
+#define C_RID_CODE(id) \
+ (((struct lang_identifier *) (id))->rid_code)
/* In a RECORD_TYPE, a sorted array of the fields of the type. */
struct lang_type
tree elts[1];
};
-/* Mark which labels are explicitly declared.
- These may be shadowed, and may be referenced from nested functions. */
-#define C_DECLARED_LABEL_FLAG(label) TREE_LANG_FLAG_1 (label)
-
/* Record whether a type or decl was written with nonconstant size.
Note that TYPE_SIZE may have simplified to a constant. */
#define C_TYPE_VARIABLE_SIZE(type) TYPE_LANG_FLAG_1 (type)
#define C_DECL_VARIABLE_SIZE(type) DECL_LANG_FLAG_0 (type)
-/* Record in each node resulting from a binary operator
- what operator was specified for it. */
-#define C_EXP_ORIGINAL_CODE(exp) ((enum tree_code) TREE_COMPLEXITY (exp))
-
#if 0 /* Not used. */
/* Record whether a decl for a function or function pointer has
already been mentioned (in a warning) because it was called
without prototypes. */
#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_NONCOPIED_PARTS (NODE)
-/* In a FIELD_DECL, nonzero if the decl was originally a bitfield. */
-#define DECL_C_BIT_FIELD(NODE) DECL_LANG_FLAG_4 (NODE)
-
-/* In a VAR_DECL, means the variable is really an iterator. */
-#define ITERATOR_P(D) (DECL_LANG_FLAG_4(D))
-
-/* In a VAR_DECL for an iterator, means we are within
- an explicit loop over that iterator. */
-#define ITERATOR_BOUND_P(NODE) ((NODE)->common.readonly_flag)
\f
/* in c-lang.c and objc-act.c */
extern tree lookup_interface PARAMS ((tree));
extern tree maybe_building_objc_message_expr PARAMS ((void));
extern tree maybe_objc_method_name PARAMS ((tree));
extern int recognize_objc_keyword PARAMS ((void));
-extern tree build_objc_string PARAMS ((int, const char *));
+extern tree lookup_objc_ivar PARAMS ((tree));
\f
/* in c-parse.in */
extern void c_parse_init PARAMS ((void));
+extern int yyparse_1 PARAMS ((void));
/* in c-aux-info.c */
extern void gen_aux_info_record PARAMS ((tree, int, int, int));
/* in c-decl.c */
extern tree build_enumerator PARAMS ((tree, tree));
-/* Add qualifiers to a type, in the fashion for C. */
-extern tree c_build_qualified_type PARAMS ((tree, int));
+
#define c_build_type_variant(TYPE, CONST_P, VOLATILE_P) \
c_build_qualified_type (TYPE, \
((CONST_P) ? TYPE_QUAL_CONST : 0) | \
((VOLATILE_P) ? TYPE_QUAL_VOLATILE : 0))
extern int c_decode_option PARAMS ((int, char **));
extern void c_mark_varargs PARAMS ((void));
+extern void check_for_loop_decls PARAMS ((void));
extern tree check_identifier PARAMS ((tree, tree));
extern void clear_parm_order PARAMS ((void));
extern tree combine_parm_decls PARAMS ((tree, tree, int));
extern int complete_array_type PARAMS ((tree, tree, int));
extern void declare_parm_level PARAMS ((int));
-extern tree define_label PARAMS ((char *, int, tree));
+extern tree define_label PARAMS ((const char *, int,
+ tree));
extern void delete_block PARAMS ((tree));
extern void finish_decl PARAMS ((tree, tree, tree));
extern void finish_decl_top_level PARAMS ((tree, tree, tree));
extern tree groktypename PARAMS ((tree));
extern tree groktypename_in_parm_context PARAMS ((tree));
extern tree implicitly_declare PARAMS ((tree));
+extern void implicit_decl_warning PARAMS ((tree));
extern int in_parm_level_p PARAMS ((void));
extern void init_decl_processing PARAMS ((void));
extern void insert_block PARAMS ((tree));
extern tree start_struct PARAMS ((enum tree_code, tree));
extern void store_parm_decls PARAMS ((void));
extern tree xref_tag PARAMS ((enum tree_code, tree));
+extern tree c_begin_compound_stmt PARAMS ((void));
+extern void c_expand_decl_stmt PARAMS ((tree));
/* in c-typeck.c */
extern tree require_complete_type PARAMS ((tree));
extern void incomplete_type_error PARAMS ((tree, tree));
-/* Given two integer or real types, return the type for their sum.
- Given two compatible ANSI C types, returns the merged type. */
-extern tree common_type PARAMS ((tree, tree));
extern int comptypes PARAMS ((tree, tree));
extern tree c_sizeof PARAMS ((tree));
extern tree c_sizeof_nowarn PARAMS ((tree));
extern tree c_size_in_bytes PARAMS ((tree));
extern tree c_alignof PARAMS ((tree));
extern tree c_alignof_expr PARAMS ((tree));
-extern tree default_conversion PARAMS ((tree));
extern tree build_component_ref PARAMS ((tree, tree));
extern tree build_indirect_ref PARAMS ((tree, const char *));
extern tree build_array_ref PARAMS ((tree, tree));
+extern tree build_external_ref PARAMS ((tree, int));
extern tree build_function_call PARAMS ((tree, tree));
extern tree parser_build_binary_op PARAMS ((enum tree_code,
tree, tree));
-extern tree build_binary_op PARAMS ((enum tree_code,
- tree, tree, int));
-extern tree build_unary_op PARAMS ((enum tree_code,
- tree, int));
-extern int lvalue_p PARAMS ((tree));
extern int lvalue_or_else PARAMS ((tree, const char *));
extern void readonly_warning PARAMS ((tree, const char *));
extern int mark_addressable PARAMS ((tree));
extern void set_init_index PARAMS ((tree, tree));
extern void set_init_label PARAMS ((tree));
extern void process_init_element PARAMS ((tree));
-extern void c_expand_asm_operands PARAMS ((tree, tree, tree,
- tree, int, char *,
- int));
-extern void c_expand_return PARAMS ((tree));
-extern tree c_expand_start_case PARAMS ((tree));
-
-/* in c-iterate.c */
-extern void init_iterators PARAMS ((void));
-extern void iterator_expand PARAMS ((tree));
-extern void iterator_for_loop_start PARAMS ((tree));
-extern void iterator_for_loop_end PARAMS ((tree));
-extern void iterator_for_loop_record PARAMS ((tree));
-extern void push_iterator_stack PARAMS ((void));
-extern void pop_iterator_stack PARAMS ((void));
+extern void pedwarn_c99 PARAMS ((const char *, ...))
+ ATTRIBUTE_PRINTF_1;
+extern tree c_start_case PARAMS ((tree));
+extern void c_finish_case PARAMS ((void));
/* Set to 0 at beginning of a function definition, set to 1 if
a return statement that specifies a return value is seen. */
extern int flag_no_asm;
-/* Nonzero means environment is hosted (i.e., not freestanding) */
-
-extern int flag_hosted;
-
/* Nonzero means warn about implicit declarations. */
extern int warn_implicit;
-/* 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 flag_const_strings;
-
/* Nonzero means warn about sizeof (function) or addition/subtraction
of function pointers. */
extern int warn_bad_function_cast;
-/* Warn about functions which might be candidates for attribute noreturn. */
-
-extern int warn_missing_noreturn;
-
/* Warn about traditional constructs whose meanings changed in ANSI C. */
extern int warn_traditional;
-/* Warn about *printf or *scanf format/argument anomalies. */
-
-extern int warn_format;
-
/* Warn about a subscript that has type char. */
extern int warn_char_subscripts;
-/* Warn if a type conversion is done that might have confusing results. */
-
-extern int warn_conversion;
-
/* Warn if main is suspicious. */
extern int warn_main;
-/* Nonzero means do some things the same way PCC does. */
-
-extern int flag_traditional;
-
-/* Nonzero means use the ISO C99 dialect of C. */
-
-extern int flag_isoc99;
-
/* Nonzero means to allow single precision math even if we're generally
being traditional. */
extern int flag_allow_single_precision;
-/* Nonzero means warn about suggesting putting in ()'s. */
-
-extern int warn_parentheses;
-
/* Warn if initializer is not completely bracketed. */
extern int warn_missing_braces;
extern int system_header_p;
+/* Warn about implicit declarations. 1 = warning, 2 = error. */
+extern int mesg_implicit_function_declaration;
+
/* Nonzero enables objc features. */
-extern int doing_objc_thang;
+#define doing_objc_thang \
+ (c_language == clk_objective_c)
/* In c-decl.c */
extern void finish_incomplete_decl PARAMS ((tree));
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