/* Definitions for C parsing and type checking.
Copyright (C) 1987, 1993, 1994, 1995, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
This file is part of GCC.
#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \
(sizeof (struct c_common_identifier) + 3 * sizeof (void *))
-/* For gc purposes, return the most likely link for the longest chain. */
-#define C_LANG_TREE_NODE_CHAIN_NEXT(T) \
- ((union lang_tree_node *) \
- (TREE_CODE (T) == INTEGER_TYPE ? TYPE_NEXT_VARIANT (T) \
- : TREE_CODE (T) == COMPOUND_EXPR ? TREE_OPERAND (T, 1) \
- : TREE_CHAIN (T)))
-
/* Language-specific declaration information. */
struct lang_decl GTY(())
{
- /* The return types and parameter types may have variable size.
- This is a list of any SAVE_EXPRs that need to be evaluated to
- compute those sizes. */
- tree pending_sizes;
+ char dummy;
};
/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
/* In an ENUMERAL_TYPE, the min and max values. */
tree enum_min;
tree enum_max;
+ /* In a RECORD_TYPE, information specific to Objective-C, such
+ as a list of adopted protocols or a pointer to a corresponding
+ @interface. See objc/objc-act.h for details. */
+ tree objc_info;
};
/* Record whether a type or decl was written with nonconstant size.
sizeof and typeof it is set for other function decls as well. */
#define C_DECL_USED(EXP) DECL_LANG_FLAG_5 (EXP)
+/* Record whether a label was defined in a statement expression which
+ has finished and so can no longer be jumped to. */
+#define C_DECL_UNJUMPABLE_STMT_EXPR(EXP) \
+ DECL_LANG_FLAG_6 (LABEL_DECL_CHECK (EXP))
+
+/* Record whether a label was the subject of a goto from outside the
+ current level of statement expression nesting and so cannot be
+ defined right now. */
+#define C_DECL_UNDEFINABLE_STMT_EXPR(EXP) \
+ DECL_LANG_FLAG_7 (LABEL_DECL_CHECK (EXP))
+
/* Nonzero for a decl which either doesn't exist or isn't a prototype.
N.B. Could be simplified if all built-in decls had complete prototypes
(but this is presently difficult because some of them need FILE*). */
/* The value of the expression. */
tree value;
/* Record the original binary operator of an expression, which may
- have been changed by fold, STRING_CST for unparenthesised string
+ have been changed by fold, STRING_CST for unparenthesized string
constants, or ERROR_MARK for other expressions (including
parenthesized expressions). */
enum tree_code original_code;
enum c_typespec_keyword typespec_word;
/* The storage class specifier, or csc_none if none. */
enum c_storage_class storage_class;
+ /* Whether any declaration specifiers have been seen at all. */
+ BOOL_BITFIELD declspecs_seen_p : 1;
+ /* Whether a type specifier has been seen. */
+ BOOL_BITFIELD type_seen_p : 1;
/* Whether something other than a storage class specifier or
attribute has been seen. This is used to warn for the
obsolescent usage of storage class specifiers other than at the
enum c_declarator_kind kind;
/* Except for cdk_id, the contained declarator. For cdk_id, NULL. */
struct c_declarator *declarator;
+ location_t id_loc; /* Currently only set for cdk_id. */
union {
/* For identifiers, an IDENTIFIER_NODE or NULL_TREE if an abstract
declarator. */
int extern_inline;
};
+/* Save lists of labels used or defined in particular statement
+ expression contexts. Allocated on the parser obstack. */
+
+struct c_label_list
+{
+ /* The label at the head of the list. */
+ tree label;
+ /* The rest of the list. */
+ struct c_label_list *next;
+};
+
+struct c_label_context
+{
+ /* The labels defined at this level of nesting. */
+ struct c_label_list *labels_def;
+ /* The labels used at this level of nesting. */
+ struct c_label_list *labels_used;
+ /* The next outermost context. */
+ struct c_label_context *next;
+};
+
\f
-/* in c-parse.in */
+/* in c-parser.c */
extern void c_parse_init (void);
/* in c-aux-info.c */
extern tree build_enumerator (tree, tree);
extern void check_for_loop_decls (void);
extern void mark_forward_parm_decls (void);
-extern int complete_array_type (tree, tree, int);
extern void declare_parm_level (void);
-extern void undeclared_variable (tree);
+extern void undeclared_variable (tree, location_t);
extern tree declare_label (tree);
extern tree define_label (location_t, tree);
extern void finish_decl (tree, tree, tree);
extern bool c_objc_common_init (void);
extern bool c_missing_noreturn_ok_p (tree);
extern tree c_objc_common_truthvalue_conversion (tree expr);
-extern int defer_fn (tree);
extern bool c_warn_unused_global_decl (tree);
extern void c_initialize_diagnostics (diagnostic_context *);
extern int in_typeof;
extern struct c_switch *c_switch_stack;
+extern struct c_label_context *label_context_stack;
extern tree require_complete_type (tree);
extern int same_translation_unit_p (tree, tree);
extern int comptypes (tree, tree);
-extern tree c_size_in_bytes (tree);
extern bool c_mark_addressable (tree);
extern void c_incomplete_type_error (tree, tree);
extern tree c_type_promotes_to (tree);
+extern tree default_conversion (tree);
extern tree composite_type (tree, tree);
extern tree build_component_ref (tree, tree);
extern tree build_indirect_ref (tree, const char *);
extern tree build_array_ref (tree, tree);
-extern tree build_external_ref (tree, int);
-extern void record_maybe_used_decl (tree);
+extern tree build_external_ref (tree, int, location_t);
extern void pop_maybe_used (bool);
extern struct c_expr c_expr_sizeof_expr (struct c_expr);
extern struct c_expr c_expr_sizeof_type (struct c_type_name *);
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