#include "c-common.h"
-/* Language-dependent contents of an identifier. */
-
-/* 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.
-
- 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 GTY(())
-{
- struct c_common_identifier common_id;
- tree symbol_value;
- tree tag_value;
- tree label_value;
-};
-
-/* The resulting tree type. */
-
-union lang_tree_node
- GTY((desc ("TREE_CODE (&%h.generic) == IDENTIFIER_NODE"),
- chain_next ("TREE_CODE (&%h.generic) == INTEGER_TYPE ? (union lang_tree_node *)TYPE_NEXT_VARIANT (&%h.generic) : (union lang_tree_node *)TREE_CHAIN (&%h.generic)")))
-{
- union tree_node GTY ((tag ("0"),
- desc ("tree_node_structure (&%h)")))
- generic;
- struct lang_identifier GTY ((tag ("1"))) identifier;
-};
+/* struct lang_identifier is private to c-decl.c, but langhooks.c needs to
+ know how big it is. This is sanity-checked in c-decl.c. */
+#define C_SIZEOF_STRUCT_LANG_IDENTIFIER \
+ (sizeof (struct c_common_identifier) + 3 * sizeof (void *))
/* Language-specific declaration information. */
tree pending_sizes;
};
-/* Macros for access to language-specific slots in an identifier. */
-/* Each of these slots contains a DECL node or null. */
-
-/* The value of the identifier in the namespace of "ordinary identifiers"
- (data objects, enum constants, functions, typedefs). */
-#define IDENTIFIER_SYMBOL_VALUE(NODE) \
- (((struct lang_identifier *) (NODE))->symbol_value)
-/* The value of the identifier in the namespace of struct, union,
- and enum tags. */
-#define IDENTIFIER_TAG_VALUE(NODE) \
- (((struct lang_identifier *) (NODE))->tag_value)
-/* The value of the identifier in the namespace of labels. */
-#define IDENTIFIER_LABEL_VALUE(NODE) \
- (((struct lang_identifier *) (NODE))->label_value)
-
-/* In identifiers, C uses the following fields in a special way:
- TREE_PUBLIC to record that there was a previous local extern decl.
- TREE_USED to record that such a decl was used.
- TREE_ADDRESSABLE to record that the address of such a decl was used. */
-
/* In a RECORD_TYPE or UNION_TYPE, nonzero if any component is read-only. */
#define C_TYPE_FIELDS_READONLY(TYPE) TREE_LANG_FLAG_1 (TYPE)
/* For a FUNCTION_DECL, nonzero if it was an implicit declaration. */
#define C_DECL_IMPLICIT(EXP) DECL_LANG_FLAG_2 (EXP)
-/* Nonzero for a declaration of an external object which is not
- currently in scope. This is either a built-in declaration of
- a library function, before a real declaration has been seen,
- or a declaration that appeared in an inner scope that has ended. */
-#define C_DECL_INVISIBLE(EXP) DECL_LANG_FLAG_3 (EXP)
+/* For any decl, nonzero if it is bound in the externals scope and
+ pop_scope mustn't chain it into any higher block. */
+#define C_DECL_IN_EXTERNAL_SCOPE(EXP) DECL_LANG_FLAG_3 (EXP)
+
+/* For FUNCTION_DECLs, evaluates true if the decl is built-in but has
+ been declared. */
+#define C_DECL_DECLARED_BUILTIN(EXP) DECL_LANG_FLAG_4 (EXP)
+
+/* Record whether a decl was declared register. This is strictly a
+ front-end flag, whereas DECL_REGISTER is used for code generation;
+ they may differ for structures with volatile fields. */
+#define C_DECL_REGISTER(EXP) DECL_LANG_FLAG_5 (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
without prototypes. */
#define TYPE_ACTUAL_ARG_TYPES(NODE) TYPE_BINFO (NODE)
-/* Values for the first parameter to poplevel. */
-#define KEEP_NO 0
-#define KEEP_YES 1
-#define KEEP_MAYBE 2
-
/* Save and restore the variables in this file and elsewhere
that keep track of the progress of compilation of the current function.
Used for nested functions. */
extern int global_bindings_p (void);
extern tree getdecls (void);
-extern void pushlevel (int);
+extern void push_scope (void);
+extern tree pop_scope (void);
extern void insert_block (tree);
-extern void set_block (tree);
extern tree pushdecl (tree);
extern void c_expand_body (tree);
extern tree finish_enum (tree, tree, tree);
extern void finish_function (void);
extern tree finish_struct (tree, tree, tree);
-extern tree get_parm_info (int);
+extern tree get_parm_info (bool);
extern tree grokfield (tree, tree, tree);
extern tree groktypename (tree);
extern tree groktypename_in_parm_context (tree);
extern tree implicitly_declare (tree);
-extern int in_parm_level_p (void);
extern void keep_next_level (void);
extern tree lookup_name (tree);
extern void pending_xref_error (void);
extern void c_pop_function_context (struct function *);
extern void push_parm_decl (tree);
extern tree pushdecl_top_level (tree);
-extern void pushtag (tree, tree);
extern tree set_array_declarator_type (tree, tree, int);
extern void shadow_tag (tree);
extern void shadow_tag_warned (tree, int);
extern void c_expand_decl_stmt (tree);
extern void c_static_assembler_name (tree);
extern tree make_pointer_declarator (tree, tree);
-extern void merge_translation_unit_decls (void);
/* in c-objc-common.c */
extern int c_disregard_inline_limits (tree);
};
extern tree require_complete_type (tree);
+extern int same_translation_unit_p (tree, tree);
extern int comptypes (tree, tree, int);
extern tree c_size_in_bytes (tree);
extern bool c_mark_addressable (tree);
extern int system_header_p;
+/* True means global_bindings_p should return false even if the scope stack
+ says we are in file scope. */
+
+extern bool c_override_global_bindings_to_false;
+
/* In c-decl.c */
extern void c_finish_incomplete_decl (tree);
extern void *get_current_scope (void);
OSDN Git Service
