+2003-10-13 Gabriel Dos Reis <gdr@integrable-solutions.net>
+
+ Break out decl.c (2/n)
+ * name-lookup.c: Include diagnostic.h
+ (cxx_binding_free): Make static.
+ (cxx_binding_make): Likewise.
+ (binding_table_new): Likewise
+ (binding_table_free): Likewise.
+ (binding_table_insert): Likewise.
+ (binding_table_find_anon_type): Likewise.
+ (binding_table_reverse_maybe_remap): Likewise.
+ (supplement_binding): Likewise.
+ * name-lookup.h (global_scope_name): Declare extern.
+ (global_type_node): Likewise.
+ (cxx_binding_free): Don't export.
+ (cxx_binding_make): Likewise.
+ (binding_table_new): Likewise.
+ (binding_table_free): Likewise.
+ (binding_table_insert): Likewise.
+ (binding_table_find_anon_type): Likewise.
+ (binding_table_reverse_maybe_remap): Likewise.
+ * Make-lang.in (cp/name-lookup.o): Depend on $(DIAGNOSTIC_H)
+ * decl.c (lookup_namespace_name): Move to name-lookup.c
+ (select_decl): Likewise.
+ (unqualified_namespace_lookup): Likewise.
+ (lookup_qualified_name): Likewise.
+ (lookup_name_real): Likewise.
+ (lookup_name_nonclass): Likewise.
+ (lookup_function_nonclass): Likewise.
+ (lookup_name): Likewise.
+ (lookup_name_current_level): Likewise.
+ (lookup_type_current_level): Likewise.
+ (lookup_flags): Likewise.
+ (qualify_lookup): Likewise.
+ (lookup_tag): Likewise.
+ (lookup_tag_reverse): Likewise.
+ (getdecls): Likewise.
+ (storedecls): Remove.
+ (cxx_remember_type_decls): Likewise.
+ (global_bindings_p): Likewise.
+ (innermost_nonclass_level): Likewise.
+ (toplevel_bindings_p): Likewise.
+ (namespace_bindings_p): Likewise.
+ (kept_level_p): Likewise.
+ (innermost_scope_kind): Likewise.
+ (template_parm_scope_p): Likewise.
+ (push_binding): Likewise.
+ (push_local_binding): Likewise.
+ (add_decl_to_level): Likewise. Make extern.
+ (push_class_binding): Move to name-lookup.c.
+ (resume_level): Likewise. Rename to resume_scope.
+ (begin_scope): Likewise.
+ (indent): Likewise.
+ (binding_depth): Likewise.
+ (is_class_level): Likewise.
+ (cxx_scope_descriptor): Likewise.
+ (cxx_scope_debug): Likewise.
+ (namespace_scope_ht_size): Likewise.
+ (leave_scope): Likewise.
+ (pushlevel_class): Likewise.
+ (poplevel_class): Likewise.
+ (clear_identifier_class_values): Likewise.
+ (pushdecl_with_scope): Likewise.
+ (pushdecl_namespace_level): Likewise.
+ (pushdecl_class_level): Likewise.
+ (push_class_level_binding): Likewise.
+ (push_using_directive): Likewise.
+ (identifier_global_value): Likewise.
+ (keep_next_level_flag): Likewise.
+ (keep_next_level): Likewise.
+ (free_binding_level): Likewise.
+ (set_class_shadows): Likewise.
+ (maybe_push_cleanup_level): Likewise.
+ (cp_namespace_decls): Likewise.
+ (bt_print_entry): Likewise.
+ (print_binding_level): Likewise.
+ (print_other_binding_stack): Likewise.
+ (print_binding_stack): Likewise.
+ (push_namespace): Likewise.
+ (pop_namespace): Likewise.
+ (push_nested_namespace): Likewise.
+ (pop_nested_namespace): Likewise.
+ (cxx_saved_binding_make): Likewise.
+ (struct cxx_saved_binding_make): Likewise.
+ (store_bindings): Likewise.
+ (maybe_push_to_top_level): Likewise.
+ (push_to_top_level): Likewise.
+ (pop_from_top_level): Likewise.
+ (identifier_type_value): Likewise.
+ (set_identifier_type_value): Likewise.
+ (set_identifier_type_value_with_scope): Likewise.
+ (pop_everything): Likewise.
+ (pushtag): Likewise.
+ (follow_tag_typedef): Likewise.
+ (maybe_process_template_type_declaration): Likewise.
+ (pop_binding): Likewise.
+ * cp-tree.h: Move corresponding declarations to name-lookup.h
+
2003-10-12 Steven Bosscher <steven@gcc.gnu.org>
* cvt.c (ocp_convert): Move warning to C common code.
cp/parser.o: cp/parser.c $(CXX_TREE_H) $(TM_H) diagnostic.h gt-cp-parser.h output.h
cp/name-lookup.o: cp/name-lookup.c $(CONFIG_H) $(SYSTEM_H) coretypes.h \
- $(TM_H) $(CXX_TREE_H) timevar.h gt-cp-name-lookup.h toplev.h
+ $(TM_H) $(CXX_TREE_H) timevar.h gt-cp-name-lookup.h toplev.h \
+ $(DIAGNOSTIC_H)
cp/cxx-pretty-print.o: cp/cxx-pretty-print.c $(CXX_PRETTY_PRINT_H) \
$(CONFIG_H) $(SYSTEM_H) $(TM_H) coretypes.h $(CXX_TREE_H)
extern void adjust_clone_args (tree);
/* decl.c */
-extern int global_bindings_p (void);
-extern int kept_level_p (void);
-extern tree getdecls (void);
extern void insert_block (tree);
extern void set_block (tree);
extern tree pushdecl (tree);
extern void cxx_push_function_context (struct function *);
extern void cxx_pop_function_context (struct function *);
extern void cxx_mark_function_context (struct function *);
-extern int toplevel_bindings_p (void);
-extern int namespace_bindings_p (void);
-extern void keep_next_level (bool);
-extern scope_kind innermost_scope_kind (void);
-extern int template_parm_scope_p (void);
-extern void set_class_shadows (tree);
-extern void maybe_push_cleanup_level (tree);
-extern cxx_scope *begin_scope (scope_kind, tree);
+extern void maybe_push_cleanup_level (tree);
extern void finish_scope (void);
-extern void resume_level (struct cp_binding_level *);
extern void delete_block (tree);
extern void add_block_current_level (tree);
-extern void pushlevel_class (void);
-extern void poplevel_class (void);
-extern void print_binding_stack (void);
-extern void print_binding_level (struct cp_binding_level *);
-extern void push_namespace (tree);
-extern void pop_namespace (void);
-extern void push_nested_namespace (tree);
-extern void pop_nested_namespace (tree);
-extern void maybe_push_to_top_level (int);
-extern void push_to_top_level (void);
-extern void pop_from_top_level (void);
extern void push_switch (tree);
extern void pop_switch (void);
-extern tree identifier_type_value (tree);
-extern void set_identifier_type_value (tree, tree);
-extern void pop_everything (void);
extern void pushtag (tree, tree, int);
extern tree make_anon_name (void);
extern void clear_anon_tags (void);
extern int duplicate_decls (tree, tree);
extern tree pushdecl_top_level (tree);
extern tree pushdecl_top_level_and_finish (tree, tree);
-extern bool pushdecl_class_level (tree);
-extern tree pushdecl_namespace_level (tree);
extern tree push_using_decl (tree, tree);
-extern tree push_using_directive (tree);
-extern bool push_class_level_binding (tree, tree);
extern tree implicitly_declare (tree);
extern tree declare_local_label (tree);
extern tree define_label (location_t, tree);
extern void check_goto (tree);
extern void define_case_label (void);
-extern tree namespace_binding (tree, tree);
-extern void set_namespace_binding (tree, tree, tree);
-extern tree lookup_namespace_name (tree, tree);
extern tree make_typename_type (tree, tree, tsubst_flags_t);
extern tree make_unbound_class_template (tree, tree, tsubst_flags_t);
-extern tree lookup_name_nonclass (tree);
-extern tree lookup_function_nonclass (tree, tree);
-extern tree lookup_qualified_name (tree, tree, bool, bool);
-extern tree lookup_name (tree, int);
-extern tree lookup_name_current_level (tree);
-extern tree lookup_type_current_level (tree);
-extern tree lookup_name_real (tree, int, int, int, int);
extern tree namespace_ancestor (tree, tree);
extern bool is_ancestor (tree, tree);
-extern tree unqualified_namespace_lookup (tree, int, tree *);
extern tree check_for_out_of_scope_variable (tree);
extern bool lookup_using_namespace (tree, cxx_binding *, tree, tree, int, tree *);
extern bool qualified_lookup_using_namespace (tree, tree, cxx_binding *, int);
extern void fixup_anonymous_aggr (tree);
extern int check_static_variable_definition (tree, tree);
extern tree compute_array_index_type (tree, tree);
-extern void push_local_binding (tree, tree, int);
-extern int push_class_binding (tree, tree);
extern tree check_default_argument (tree, tree);
extern tree push_overloaded_decl (tree, int);
-extern void clear_identifier_class_values (void);
-extern void storetags (tree);
extern int vtable_decl_p (tree, void *);
extern int vtype_decl_p (tree, void *);
extern int sigtable_decl_p (tree, void *);
extern int walk_namespaces (walk_namespaces_fn,
void *);
extern int wrapup_globals_for_namespace (tree, void *);
-extern tree cp_namespace_decls (tree);
extern tree create_implicit_typedef (tree, tree);
extern tree maybe_push_decl (tree);
extern tree build_target_expr_with_type (tree, tree);
extern tree cxx_builtin_type_decls (void);
extern bool have_extern_spec;
+extern GTY(()) tree last_function_parms;
/* in decl2.c */
extern bool check_java_method (tree);
static tree grokparms (tree);
static const char *redeclaration_error_message (tree, tree);
-static void resume_binding_level (struct cp_binding_level *);
static int decl_jump_unsafe (tree);
-static void storedecls (tree);
static void require_complete_types_for_parms (tree);
static int ambi_op_p (enum tree_code);
static int unary_op_p (enum tree_code);
-static cxx_saved_binding *store_bindings (tree, cxx_saved_binding *);
-static tree lookup_tag_reverse (tree, tree);
static void push_local_name (tree);
static void warn_extern_redeclared_static (tree, tree);
static tree grok_reference_init (tree, tree, tree, tree *);
enum overload_flags, tree,
tree, int, int, int, int, int, int, tree);
static tree grokvardecl (tree, tree, RID_BIT_TYPE *, int, int, tree);
-static tree follow_tag_typedef (tree);
-static tree lookup_tag (enum tree_code, tree,
- struct cp_binding_level *, int);
-static void set_identifier_type_value_with_scope
- (tree, tree, struct cp_binding_level *);
static void record_unknown_type (tree, const char *);
static tree builtin_function_1 (const char *, tree, tree, int,
enum built_in_class, const char *,
static int member_function_or_else (tree, tree, enum overload_flags);
static void bad_specifiers (tree, const char *, int, int, int, int,
int);
-static tree maybe_process_template_type_declaration
- (tree, int, struct cp_binding_level*);
static void check_for_uninitialized_const_var (tree);
static hashval_t typename_hash (const void *);
static int typename_compare (const void *, const void *);
-static void push_binding (tree, tree, struct cp_binding_level*);
-static void pop_binding (tree, tree);
static tree local_variable_p_walkfn (tree *, int *, void *);
-static tree select_decl (cxx_binding *, int);
-static int lookup_flags (int, int);
-static tree qualify_lookup (tree, int);
static tree record_builtin_java_type (const char *, int);
static const char *tag_name (enum tag_types code);
-static struct cp_binding_level *innermost_nonclass_level (void);
static int walk_namespaces_r (tree, walk_namespaces_fn, void *);
static int walk_globals_r (tree, void*);
static int walk_vtables_r (tree, void*);
-static void add_decl_to_level (tree, struct cp_binding_level *);
static tree make_label_decl (tree, int);
static void use_label (tree);
static void check_previous_goto_1 (tree, struct cp_binding_level *, tree,
/* Indicates that there is a type value in some namespace, although
that is not necessarily in scope at the moment. */
-static GTY(()) tree global_type_node;
+tree global_type_node;
/* The node that holds the "name" of the global scope. */
-static GTY(()) tree global_scope_name;
+tree global_scope_name;
/* Used only for jumps to as-yet undefined labels, since jumps to
defined labels can have their validity checked immediately. */
bool have_extern_spec;
\f
-/* A chain of binding_level structures awaiting reuse. */
-
-static GTY((deletable (""))) struct cp_binding_level *free_binding_level;
-
-/* true means unconditionally make a BLOCK for the next level pushed. */
-
-static bool keep_next_level_flag;
-
/* A TREE_LIST of VAR_DECLs. The TREE_PURPOSE is a RECORD_TYPE or
UNION_TYPE; the TREE_VALUE is a VAR_DECL with that type. At the
time the VAR_DECL was declared, the type was incomplete. */
static GTY(()) tree incomplete_vars;
-
-#ifndef ENABLE_SCOPE_CHECKING
-# define ENABLE_SCOPE_CHECKING 0
-#else
-# define ENABLE_SCOPE_CHECKING 1
-#endif
-
-static int binding_depth = 0;
-static int is_class_level = 0;
-
-static void
-indent (int depth)
-{
- int i;
-
- for (i = 0; i < depth * 2; i++)
- putc (' ', stderr);
-}
-
-static tree pushdecl_with_scope (tree, struct cp_binding_level *);
-
-/* Return a string describing the kind of SCOPE we have. */
-static const char *
-cxx_scope_descriptor (cxx_scope *scope)
-{
- /* The order of this table must match the "scope_kind"
- enumerators. */
- static const char* scope_kind_names[] = {
- "block-scope",
- "cleanup-scope",
- "try-scope",
- "catch-scope",
- "for-scope",
- "function-parameter-scope",
- "class-scope",
- "namespace-scope",
- "template-parameter-scope",
- "template-explicit-spec-scope"
- };
- const scope_kind kind = scope->explicit_spec_p
- ? sk_template_spec : scope->kind;
-
- return scope_kind_names[kind];
-}
-
-/* Output a debugging information about SCOPE when performning
- ACTION at LINE. */
-static void
-cxx_scope_debug (cxx_scope *scope, int line, const char *action)
-{
- const char *desc = cxx_scope_descriptor (scope);
- if (scope->this_entity)
- verbatim ("%s %s(%E) %p %d\n", action, desc,
- scope->this_entity, (void *) scope, line);
- else
- verbatim ("%s %s %p %d\n", action, desc, (void *) scope, line);
-}
-
-/* Return the estimated initial size of the hashtable of a NAMESPACE
- scope. */
-
-static inline size_t
-namespace_scope_ht_size (tree ns)
-{
- tree name = DECL_NAME (ns);
-
- return name == std_identifier
- ? NAMESPACE_STD_HT_SIZE
- : (name == global_scope_name
- ? GLOBAL_SCOPE_HT_SIZE
- : NAMESPACE_ORDINARY_HT_SIZE);
-}
-
-/* Create a new KIND scope and make it the top of the active scopes stack.
- ENTITY is the scope of the associated C++ entity (namespace, class,
- function); it is NULL otherwise. */
-
-cxx_scope *
-begin_scope (scope_kind kind, tree entity)
-{
- cxx_scope *scope;
-
- /* Reuse or create a struct for this binding level. */
- if (!ENABLE_SCOPE_CHECKING && free_binding_level)
- {
- scope = free_binding_level;
- free_binding_level = scope->level_chain;
- }
- else
- scope = ggc_alloc (sizeof (cxx_scope));
- memset (scope, 0, sizeof (cxx_scope));
-
- scope->this_entity = entity;
- scope->more_cleanups_ok = true;
- switch (kind)
- {
- case sk_cleanup:
- scope->keep = true;
- break;
-
- case sk_template_spec:
- scope->explicit_spec_p = true;
- kind = sk_template_parms;
- /* fall through */
- case sk_template_parms:
- case sk_block:
- case sk_try:
- case sk_catch:
- case sk_for:
- case sk_class:
- case sk_function_parms:
- scope->keep = keep_next_level_flag;
- break;
-
- case sk_namespace:
- scope->type_decls = binding_table_new (namespace_scope_ht_size (entity));
- NAMESPACE_LEVEL (entity) = scope;
- VARRAY_TREE_INIT (scope->static_decls,
- DECL_NAME (entity) == std_identifier
- || DECL_NAME (entity) == global_scope_name
- ? 200 : 10,
- "Static declarations");
- break;
-
- default:
- /* Should not happen. */
- my_friendly_assert (false, 20030922);
- break;
- }
- scope->kind = kind;
-
- /* Add it to the front of currently active scopes stack. */
- scope->level_chain = current_binding_level;
- current_binding_level = scope;
- keep_next_level_flag = false;
-
- if (ENABLE_SCOPE_CHECKING)
- {
- scope->binding_depth = binding_depth;
- indent (binding_depth);
- cxx_scope_debug (scope, input_location.line, "push");
- is_class_level = 0;
- binding_depth++;
- }
-
- return scope;
-}
-
-/* We're about to leave current scope. Pop the top of the stack of
- currently active scopes. Return the enclosing scope, now active. */
-
-static cxx_scope *
-leave_scope (void)
-{
- cxx_scope *scope = current_binding_level;
-
- if (scope->kind == sk_namespace && class_binding_level)
- current_binding_level = class_binding_level;
-
- /* We cannot leave a scope, if there are none left. */
- if (NAMESPACE_LEVEL (global_namespace))
- my_friendly_assert (!global_scope_p (scope), 20030527);
-
- if (ENABLE_SCOPE_CHECKING)
- {
- indent (--binding_depth);
- cxx_scope_debug (scope, input_location.line, "leave");
- if (is_class_level != (scope == class_binding_level))
- {
- indent (binding_depth);
- verbatim ("XXX is_class_level != (current_scope == class_scope)\n");
- }
- is_class_level = 0;
- }
-
- /* Move one nesting level up. */
- current_binding_level = scope->level_chain;
-
- /* Namespace-scopes are left most probably temporarily, not completely;
- they can be reopen later, e.g. in namespace-extension or any name
- binding acttivity that requires us to resume a namespace. For other
- scopes, we just make the structure available for reuse. */
- if (scope->kind != sk_namespace)
- {
- scope->level_chain = free_binding_level;
- if (scope->kind == sk_class)
- scope->type_decls = NULL;
- else
- binding_table_free (scope->type_decls);
- my_friendly_assert (!ENABLE_SCOPE_CHECKING
- || scope->binding_depth == binding_depth,
- 20030529);
- free_binding_level = scope;
- }
-
- /* Find the innermost enclosing class scope, and reset
- CLASS_BINDING_LEVEL appropriately. */
- for (scope = current_binding_level;
- scope && scope->kind != sk_class;
- scope = scope->level_chain)
- ;
- class_binding_level = scope && scope->kind == sk_class ? scope : NULL;
-
- return current_binding_level;
-}
-
-static void
-resume_binding_level (struct cp_binding_level* b)
-{
- /* Resuming binding levels is meant only for namespaces,
- and those cannot nest into classes. */
- my_friendly_assert(!class_binding_level, 386);
- /* Also, resuming a non-directly nested namespace is a no-no. */
- my_friendly_assert(b->level_chain == current_binding_level, 386);
- current_binding_level = b;
- if (ENABLE_SCOPE_CHECKING)
- {
- b->binding_depth = binding_depth;
- indent (binding_depth);
- cxx_scope_debug (b, input_location.line, "resume");
- is_class_level = 0;
- binding_depth++;
- }
-}
\f
-/* Nonzero if we are currently in the global binding level. */
-
-int
-global_bindings_p (void)
-{
- return global_scope_p (current_binding_level);
-}
-
-/* Return the innermost binding level that is not for a class scope. */
-
-static struct cp_binding_level *
-innermost_nonclass_level (void)
-{
- struct cp_binding_level *b;
-
- b = current_binding_level;
- while (b->kind == sk_class)
- b = b->level_chain;
-
- return b;
-}
-
-/* Nonzero if we are currently in a toplevel binding level. This
- means either the global binding level or a namespace in a toplevel
- binding level. Since there are no non-toplevel namespace levels,
- this really means any namespace or template parameter level. We
- also include a class whose context is toplevel. */
-
-int
-toplevel_bindings_p (void)
-{
- struct cp_binding_level *b = innermost_nonclass_level ();
-
- return b->kind == sk_namespace || b->kind == sk_template_parms;
-}
-
-/* Nonzero if this is a namespace scope, or if we are defining a class
- which is itself at namespace scope, or whose enclosing class is
- such a class, etc. */
-
-int
-namespace_bindings_p (void)
-{
- struct cp_binding_level *b = innermost_nonclass_level ();
-
- return b->kind == sk_namespace;
-}
-
-/* If KEEP is true, make a BLOCK node for the next binding level,
- unconditionally. Otherwise, use the normal logic to decide whether
- or not to create a BLOCK. */
-
-void
-keep_next_level (bool keep)
-{
- keep_next_level_flag = keep;
-}
-
-/* Nonzero if the current level needs to have a BLOCK made. */
-
-int
-kept_level_p (void)
-{
- return (current_binding_level->blocks != NULL_TREE
- || current_binding_level->keep
- || current_binding_level->kind == sk_cleanup
- || current_binding_level->names != NULL_TREE
- || current_binding_level->type_decls != NULL);
-}
-
-/* Returns the kind of the innermost scope. */
-
-scope_kind
-innermost_scope_kind (void)
-{
- return current_binding_level->kind;
-}
-
-/* Returns nonzero if this scope was created to store template
- parameters. */
-
-int
-template_parm_scope_p (void)
-{
- return innermost_scope_kind () == sk_template_parms;
-}
-
/* Returns the kind of template specialization we are currently
processing, given that it's declaration contained N_CLASS_SCOPES
explicit scope qualifications. */
return innermost_specialization_p ? tsk_expl_spec : tsk_template;
}
-void
-set_class_shadows (tree shadows)
-{
- class_binding_level->class_shadowed = shadows;
-}
-
-/* We're defining an object of type TYPE. If it needs a cleanup, but
- we're not allowed to add any more objects with cleanups to the current
- scope, create a new binding level. */
-
-void
-maybe_push_cleanup_level (tree type)
-{
- if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
- && current_binding_level->more_cleanups_ok == 0)
- {
- begin_scope (sk_cleanup, NULL);
- clear_last_expr ();
- add_scope_stmt (/*begin_p=*/1, /*partial_p=*/1);
- }
-}
-
/* Exit the current scope. */
void
poplevel (0, 0, 0);
}
-/* Make DECL the innermost binding for ID. The LEVEL is the binding
- level at which this declaration is being bound. */
-
-static void
-push_binding (tree id, tree decl, cxx_scope* level)
-{
- cxx_binding *binding = cxx_binding_make (decl, NULL);
-
- /* Now, fill in the binding information. */
- binding->previous = IDENTIFIER_BINDING (id);
- binding->scope = level;
- INHERITED_VALUE_BINDING_P (binding) = 0;
- LOCAL_BINDING_P (binding) = (level != class_binding_level);
-
- /* And put it on the front of the list of bindings for ID. */
- IDENTIFIER_BINDING (id) = binding;
-}
-
-/* Add DECL to the list of things declared in B. */
-
-static void
-add_decl_to_level (tree decl,
- struct cp_binding_level* b)
-{
- if (TREE_CODE (decl) == NAMESPACE_DECL
- && !DECL_NAMESPACE_ALIAS (decl))
- {
- TREE_CHAIN (decl) = b->namespaces;
- b->namespaces = decl;
- }
- else if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
- {
- TREE_CHAIN (decl) = b->vtables;
- b->vtables = decl;
- }
- else
- {
- /* We build up the list in reverse order, and reverse it later if
- necessary. */
- TREE_CHAIN (decl) = b->names;
- b->names = decl;
- b->names_size++;
-
- /* If appropriate, add decl to separate list of statics */
- if (b->kind == sk_namespace)
- if ((TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
- || (TREE_CODE (decl) == FUNCTION_DECL
- && (!TREE_PUBLIC (decl) || DECL_DECLARED_INLINE_P (decl))))
- VARRAY_PUSH_TREE (b->static_decls, decl);
- }
-}
-
-/* Bind DECL to ID in the current_binding_level, assumed to be a local
- binding level. If PUSH_USING is set in FLAGS, we know that DECL
- doesn't really belong to this binding level, that it got here
- through a using-declaration. */
-
-void
-push_local_binding (tree id, tree decl, int flags)
-{
- struct cp_binding_level *b;
-
- /* Skip over any local classes. This makes sense if we call
- push_local_binding with a friend decl of a local class. */
- b = innermost_nonclass_level ();
-
- if (lookup_name_current_level (id))
- {
- /* Supplement the existing binding. */
- if (!supplement_binding (IDENTIFIER_BINDING (id), decl))
- /* It didn't work. Something else must be bound at this
- level. Do not add DECL to the list of things to pop
- later. */
- return;
- }
- else
- /* Create a new binding. */
- push_binding (id, decl, b);
-
- if (TREE_CODE (decl) == OVERLOAD || (flags & PUSH_USING))
- /* We must put the OVERLOAD into a TREE_LIST since the
- TREE_CHAIN of an OVERLOAD is already used. Similarly for
- decls that got here through a using-declaration. */
- decl = build_tree_list (NULL_TREE, decl);
-
- /* And put DECL on the list of things declared by the current
- binding level. */
- add_decl_to_level (decl, b);
-}
-
-/* Bind DECL to ID in the class_binding_level. Returns nonzero if the
- binding was successful. */
-
-int
-push_class_binding (tree id, tree decl)
-{
- int result = 1;
- cxx_binding *binding = IDENTIFIER_BINDING (id);
- tree context;
-
- timevar_push (TV_NAME_LOOKUP);
- /* Note that we declared this value so that we can issue an error if
- this is an invalid redeclaration of a name already used for some
- other purpose. */
- note_name_declared_in_class (id, decl);
-
- if (binding && binding->scope == class_binding_level)
- /* Supplement the existing binding. */
- result = supplement_binding (IDENTIFIER_BINDING (id), decl);
- else
- /* Create a new binding. */
- push_binding (id, decl, class_binding_level);
-
- /* Update the IDENTIFIER_CLASS_VALUE for this ID to be the
- class-level declaration. Note that we do not use DECL here
- because of the possibility of the `struct stat' hack; if DECL is
- a class-name or enum-name we might prefer a field-name, or some
- such. */
- IDENTIFIER_CLASS_VALUE (id) = IDENTIFIER_BINDING (id)->value;
-
- /* If this is a binding from a base class, mark it as such. */
- binding = IDENTIFIER_BINDING (id);
- if (binding->value == decl && TREE_CODE (decl) != TREE_LIST)
- {
- if (TREE_CODE (decl) == OVERLOAD)
- context = CP_DECL_CONTEXT (OVL_CURRENT (decl));
- else
- {
- my_friendly_assert (DECL_P (decl), 0);
- context = context_for_name_lookup (decl);
- }
-
- if (is_properly_derived_from (current_class_type, context))
- INHERITED_VALUE_BINDING_P (binding) = 1;
- else
- INHERITED_VALUE_BINDING_P (binding) = 0;
- }
- else if (binding->value == decl)
- /* We only encounter a TREE_LIST when push_class_decls detects an
- ambiguity. Such an ambiguity can be overridden by a definition
- in this class. */
- INHERITED_VALUE_BINDING_P (binding) = 1;
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, result);
-}
-
-/* Remove the binding for DECL which should be the innermost binding
- for ID. */
-
-static void
-pop_binding (tree id, tree decl)
-{
- cxx_binding *binding;
-
- if (id == NULL_TREE)
- /* It's easiest to write the loops that call this function without
- checking whether or not the entities involved have names. We
- get here for such an entity. */
- return;
-
- /* Get the innermost binding for ID. */
- binding = IDENTIFIER_BINDING (id);
-
- /* The name should be bound. */
- my_friendly_assert (binding != NULL, 0);
-
- /* The DECL will be either the ordinary binding or the type
- binding for this identifier. Remove that binding. */
- if (binding->value == decl)
- binding->value = NULL_TREE;
- else if (binding->type == decl)
- binding->type = NULL_TREE;
- else
- abort ();
-
- if (!binding->value && !binding->type)
- {
- /* We're completely done with the innermost binding for this
- identifier. Unhook it from the list of bindings. */
- IDENTIFIER_BINDING (id) = binding->previous;
-
- /* Add it to the free list. */
- cxx_binding_free (binding);
- }
-}
-
/* When a label goes out of scope, check to see if that label was used
in a valid manner, and issue any appropriate warnings or errors. */
but it is not applicable in function-at-a-time mode. */
}
-/* Do a pushlevel for class declarations. */
-
-void
-pushlevel_class (void)
-{
- if (ENABLE_SCOPE_CHECKING)
- is_class_level = 1;
-
- class_binding_level = begin_scope (sk_class, current_class_type);
-}
-
-/* ...and a poplevel for class declarations. */
-
-void
-poplevel_class (void)
-{
- register struct cp_binding_level *level = class_binding_level;
- tree shadowed;
-
- timevar_push (TV_NAME_LOOKUP);
- my_friendly_assert (level != 0, 354);
-
- /* If we're leaving a toplevel class, don't bother to do the setting
- of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
- shouldn't even be used when current_class_type isn't set, and second,
- if we don't touch it here, we're able to use the cache effect if the
- next time we're entering a class scope, it is the same class. */
- if (current_class_depth != 1)
- {
- struct cp_binding_level* b;
-
- /* Clear out our IDENTIFIER_CLASS_VALUEs. */
- for (shadowed = level->class_shadowed;
- shadowed;
- shadowed = TREE_CHAIN (shadowed))
- IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = NULL_TREE;
-
- /* Find the next enclosing class, and recreate
- IDENTIFIER_CLASS_VALUEs appropriate for that class. */
- b = level->level_chain;
- while (b && b->kind != sk_class)
- b = b->level_chain;
-
- if (b)
- for (shadowed = b->class_shadowed;
- shadowed;
- shadowed = TREE_CHAIN (shadowed))
- {
- cxx_binding *binding;
-
- binding = IDENTIFIER_BINDING (TREE_PURPOSE (shadowed));
- while (binding && binding->scope != b)
- binding = binding->previous;
-
- if (binding)
- IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed))
- = binding->value;
- }
- }
- else
- /* Remember to save what IDENTIFIER's were bound in this scope so we
- can recover from cache misses. */
- {
- previous_class_type = current_class_type;
- previous_class_values = class_binding_level->class_shadowed;
- }
- for (shadowed = level->type_shadowed;
- shadowed;
- shadowed = TREE_CHAIN (shadowed))
- SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed), TREE_VALUE (shadowed));
-
- /* Remove the bindings for all of the class-level declarations. */
- for (shadowed = level->class_shadowed;
- shadowed;
- shadowed = TREE_CHAIN (shadowed))
- pop_binding (TREE_PURPOSE (shadowed), TREE_TYPE (shadowed));
-
- /* Now, pop out of the binding level which we created up in the
- `pushlevel_class' routine. */
- if (ENABLE_SCOPE_CHECKING)
- is_class_level = 1;
-
- leave_scope ();
- timevar_pop (TV_NAME_LOOKUP);
-}
-
-/* We are entering the scope of a class. Clear IDENTIFIER_CLASS_VALUE
- for any names in enclosing classes. */
-
-void
-clear_identifier_class_values (void)
-{
- tree t;
-
- if (!class_binding_level)
- return;
-
- for (t = class_binding_level->class_shadowed;
- t;
- t = TREE_CHAIN (t))
- IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (t)) = NULL_TREE;
-}
-
/* Returns nonzero if T is a virtual function table. */
int
&& TYPE_POLYMORPHIC_P (TREE_TYPE (t)));
}
-/* Return the declarations that are members of the namespace NS. */
-
-tree
-cp_namespace_decls (tree ns)
-{
- return NAMESPACE_LEVEL (ns)->names;
-}
-
struct walk_globals_data {
walk_globals_pred p;
walk_globals_fn f;
/* Walk all the namespaces contained NAMESPACE, including NAMESPACE
itself, calling F for each. The DATA is passed to F as well. */
-static int
-walk_namespaces_r (tree namespace, walk_namespaces_fn f, void* data)
-{
- int result = 0;
- tree current = NAMESPACE_LEVEL (namespace)->namespaces;
-
- result |= (*f) (namespace, data);
-
- for (; current; current = TREE_CHAIN (current))
- result |= walk_namespaces_r (current, f, data);
-
- return result;
-}
-
-/* Walk all the namespaces, calling F for each. The DATA is passed to
- F as well. */
-
-int
-walk_namespaces (walk_namespaces_fn f, void* data)
-{
- return walk_namespaces_r (global_namespace, f, data);
-}
-
-/* Walk the global declarations in NAMESPACE. Whenever one is found
- for which P returns nonzero, call F with its address. If any call
- to F returns a nonzero value, return a nonzero value. */
-
-static int
-walk_globals_r (tree namespace, void* data)
-{
- struct walk_globals_data* wgd = (struct walk_globals_data *) data;
- walk_globals_pred p = wgd->p;
- walk_globals_fn f = wgd->f;
- void *d = wgd->data;
- tree *t;
- int result = 0;
-
- t = &NAMESPACE_LEVEL (namespace)->names;
-
- while (*t)
- {
- tree glbl = *t;
-
- if ((*p) (glbl, d))
- result |= (*f) (t, d);
-
- /* If F changed *T, then *T still points at the next item to
- examine. */
- if (*t == glbl)
- t = &TREE_CHAIN (*t);
- }
-
- return result;
-}
-
-/* Walk the global declarations. Whenever one is found for which P
- returns true, call F with its address. If any call to F
- returns true, return true. */
-
-bool
-walk_globals (walk_globals_pred p, walk_globals_fn f, void *data)
-{
- struct walk_globals_data wgd;
- wgd.p = p;
- wgd.f = f;
- wgd.data = data;
-
- return walk_namespaces (walk_globals_r, &wgd);
-}
-
-/* Call wrapup_globals_declarations for the globals in NAMESPACE. If
- DATA is non-NULL, this is the last time we will call
- wrapup_global_declarations for this NAMESPACE. */
-
-int
-wrapup_globals_for_namespace (tree namespace, void* data)
-{
- struct cp_binding_level *level = NAMESPACE_LEVEL (namespace);
- varray_type statics = level->static_decls;
- tree *vec = &VARRAY_TREE (statics, 0);
- int len = VARRAY_ACTIVE_SIZE (statics);
- int last_time = (data != 0);
-
- if (last_time)
- {
- check_global_declarations (vec, len);
- return 0;
- }
-
- /* Write out any globals that need to be output. */
- return wrapup_global_declarations (vec, len);
-}
-
-\f
-/* For debugging. */
-static int no_print_functions = 0;
-static int no_print_builtins = 0;
-
-/* Called from print_binding_level through binding_table_foreach to
- print the content of binding ENTRY. DATA is a pointer to line offset
- marker. */
-static void
-bt_print_entry (binding_entry entry, void *data)
-{
- int *p = (int *) data;
- int len;
-
- if (entry->name == NULL)
- len = 3;
- else if (entry->name == TYPE_IDENTIFIER (entry->type))
- len = 2;
- else
- len = 4;
- len = 4;
-
- *p += len;
-
- if (*p > 5)
- {
- fprintf (stderr, "\n\t");
- *p = len;
- }
- if (entry->name == NULL)
- {
- print_node_brief (stderr, "<unnamed-typedef", entry->type, 0);
- fprintf (stderr, ">");
- }
- else if (entry->name == TYPE_IDENTIFIER (entry->type))
- print_node_brief (stderr, "", entry->type, 0);
- else
- {
- print_node_brief (stderr, "<typedef", entry->name, 0);
- print_node_brief (stderr, "", entry->type, 0);
- fprintf (stderr, ">");
- }
-}
-
-void
-print_binding_level (struct cp_binding_level* lvl)
-{
- tree t;
- int i = 0, len;
- fprintf (stderr, " blocks=" HOST_PTR_PRINTF, (void *) lvl->blocks);
- if (lvl->more_cleanups_ok)
- fprintf (stderr, " more-cleanups-ok");
- if (lvl->have_cleanups)
- fprintf (stderr, " have-cleanups");
- fprintf (stderr, "\n");
- if (lvl->names)
- {
- fprintf (stderr, " names:\t");
- /* We can probably fit 3 names to a line? */
- for (t = lvl->names; t; t = TREE_CHAIN (t))
- {
- if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL))
- continue;
- if (no_print_builtins
- && (TREE_CODE (t) == TYPE_DECL)
- && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>")))
- continue;
-
- /* Function decls tend to have longer names. */
- if (TREE_CODE (t) == FUNCTION_DECL)
- len = 3;
- else
- len = 2;
- i += len;
- if (i > 6)
- {
- fprintf (stderr, "\n\t");
- i = len;
- }
- print_node_brief (stderr, "", t, 0);
- if (t == error_mark_node)
- break;
- }
- if (i)
- fprintf (stderr, "\n");
- }
- if (lvl->type_decls)
- {
- fprintf (stderr, " tags:\t");
- i = 0;
- binding_table_foreach (lvl->type_decls, bt_print_entry, &i);
- if (i)
- fprintf (stderr, "\n");
- }
- if (lvl->class_shadowed)
- {
- fprintf (stderr, " class-shadowed:");
- for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t))
- {
- fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
- }
- fprintf (stderr, "\n");
- }
- if (lvl->type_shadowed)
- {
- fprintf (stderr, " type-shadowed:");
- for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t))
- {
- fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
- }
- fprintf (stderr, "\n");
- }
-}
-
-void
-print_other_binding_stack (struct cp_binding_level *stack)
-{
- struct cp_binding_level *level;
- for (level = stack; !global_scope_p (level); level = level->level_chain)
- {
- fprintf (stderr, "binding level " HOST_PTR_PRINTF "\n", (void *) level);
- print_binding_level (level);
- }
-}
-
-void
-print_binding_stack (void)
-{
- struct cp_binding_level *b;
- fprintf (stderr, "current_binding_level=" HOST_PTR_PRINTF
- "\nclass_binding_level=" HOST_PTR_PRINTF
- "\nNAMESPACE_LEVEL (global_namespace)=" HOST_PTR_PRINTF "\n",
- (void *) current_binding_level, (void *) class_binding_level,
- (void *) NAMESPACE_LEVEL (global_namespace));
- if (class_binding_level)
- {
- for (b = class_binding_level; b; b = b->level_chain)
- if (b == current_binding_level)
- break;
- if (b)
- b = class_binding_level;
- else
- b = current_binding_level;
- }
- else
- b = current_binding_level;
- print_other_binding_stack (b);
- fprintf (stderr, "global:\n");
- print_binding_level (NAMESPACE_LEVEL (global_namespace));
-}
-
-/* Namespace binding access routines: The namespace_bindings field of
- the identifier is polymorphic, with three possible values:
- NULL_TREE, a list of "cxx_binding"s. */
-
-/* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
- select a name that is unique to this compilation unit. */
-
-void
-push_namespace (tree name)
-{
- tree d = NULL_TREE;
- int need_new = 1;
- int implicit_use = 0;
-
- timevar_push (TV_NAME_LOOKUP);
-
- /* We should not get here if the global_namespace is not yet constructed
- nor if NAME designates the global namespace: The global scope is
- constructed elsewhere. */
- my_friendly_assert (global_namespace != NULL && name != global_scope_name,
- 20030531);
-
- if (!name)
- {
- /* The name of anonymous namespace is unique for the translation
- unit. */
- if (!anonymous_namespace_name)
- anonymous_namespace_name = get_file_function_name ('N');
- name = anonymous_namespace_name;
- d = IDENTIFIER_NAMESPACE_VALUE (name);
- if (d)
- /* Reopening anonymous namespace. */
- need_new = 0;
- implicit_use = 1;
- }
- else
- {
- /* Check whether this is an extended namespace definition. */
- d = IDENTIFIER_NAMESPACE_VALUE (name);
- if (d != NULL_TREE && TREE_CODE (d) == NAMESPACE_DECL)
- {
- need_new = 0;
- if (DECL_NAMESPACE_ALIAS (d))
- {
- error ("namespace alias `%D' not allowed here, assuming `%D'",
- d, DECL_NAMESPACE_ALIAS (d));
- d = DECL_NAMESPACE_ALIAS (d);
- }
- }
- }
-
- if (need_new)
- {
- /* Make a new namespace, binding the name to it. */
- d = build_lang_decl (NAMESPACE_DECL, name, void_type_node);
- DECL_CONTEXT (d) = FROB_CONTEXT (current_namespace);
- d = pushdecl (d);
- begin_scope (sk_namespace, d);
- }
- else
- resume_binding_level (NAMESPACE_LEVEL (d));
-
- if (implicit_use)
- do_using_directive (d);
- /* Enter the name space. */
- current_namespace = d;
-
- timevar_pop (TV_NAME_LOOKUP);
-}
-
-/* Pop from the scope of the current namespace. */
-
-void
-pop_namespace (void)
-{
- my_friendly_assert (current_namespace != global_namespace, 20010801);
- current_namespace = CP_DECL_CONTEXT (current_namespace);
- /* The binding level is not popped, as it might be re-opened later. */
- leave_scope ();
-}
-
-/* Push into the scope of the namespace NS, even if it is deeply
- nested within another namespace. */
-
-void
-push_nested_namespace (tree ns)
-{
- if (ns == global_namespace)
- push_to_top_level ();
- else
- {
- push_nested_namespace (CP_DECL_CONTEXT (ns));
- push_namespace (DECL_NAME (ns));
- }
-}
-
-/* Pop back from the scope of the namespace NS, which was previously
- entered with push_nested_namespace. */
-
-void
-pop_nested_namespace (tree ns)
-{
- timevar_push (TV_NAME_LOOKUP);
- while (ns != global_namespace)
- {
- pop_namespace ();
- ns = CP_DECL_CONTEXT (ns);
- }
-
- pop_from_top_level ();
- timevar_pop (TV_NAME_LOOKUP);
-}
-
-\f
-/* Allocate storage for saving a C++ binding. */
-#define cxx_saved_binding_make() \
- (ggc_alloc (sizeof (cxx_saved_binding)))
-
-struct cxx_saved_binding GTY(())
-{
- /* Link that chains saved C++ bindings for a given name into a stack. */
- cxx_saved_binding *previous;
- /* The name of the current binding. */
- tree identifier;
- /* The binding we're saving. */
- cxx_binding *binding;
- tree class_value;
- tree real_type_value;
-};
-
-/* Subroutines for reverting temporarily to top-level for instantiation
- of templates and such. We actually need to clear out the class- and
- local-value slots of all identifiers, so that only the global values
- are at all visible. Simply setting current_binding_level to the global
- scope isn't enough, because more binding levels may be pushed. */
-struct saved_scope *scope_chain;
-
-static cxx_saved_binding *
-store_bindings (tree names, cxx_saved_binding *old_bindings)
-{
- tree t;
- cxx_saved_binding *search_bindings = old_bindings;
-
- timevar_push (TV_NAME_LOOKUP);
- for (t = names; t; t = TREE_CHAIN (t))
- {
- tree id;
- cxx_saved_binding *saved;
- cxx_saved_binding *t1;
-
- if (TREE_CODE (t) == TREE_LIST)
- id = TREE_PURPOSE (t);
- else
- id = DECL_NAME (t);
-
- if (!id
- /* Note that we may have an IDENTIFIER_CLASS_VALUE even when
- we have no IDENTIFIER_BINDING if we have left the class
- scope, but cached the class-level declarations. */
- || !(IDENTIFIER_BINDING (id) || IDENTIFIER_CLASS_VALUE (id)))
- continue;
-
- for (t1 = search_bindings; t1; t1 = t1->previous)
- if (t1->identifier == id)
- goto skip_it;
-
- my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135);
- saved = cxx_saved_binding_make ();
- saved->previous = old_bindings;
- saved->identifier = id;
- saved->binding = IDENTIFIER_BINDING (id);
- saved->class_value = IDENTIFIER_CLASS_VALUE (id);;
- saved->real_type_value = REAL_IDENTIFIER_TYPE_VALUE (id);
- IDENTIFIER_BINDING (id) = NULL;
- IDENTIFIER_CLASS_VALUE (id) = NULL_TREE;
- old_bindings = saved;
- skip_it:
- ;
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, old_bindings);
-}
-
-void
-maybe_push_to_top_level (int pseudo)
-{
- struct saved_scope *s;
- struct cp_binding_level *b;
- cxx_saved_binding *old_bindings;
- int need_pop;
-
- timevar_push (TV_NAME_LOOKUP);
- s = ggc_alloc_cleared (sizeof (struct saved_scope));
-
- b = scope_chain ? current_binding_level : 0;
-
- /* If we're in the middle of some function, save our state. */
- if (cfun)
- {
- need_pop = 1;
- push_function_context_to (NULL_TREE);
- }
- else
- need_pop = 0;
-
- old_bindings = NULL;
- if (scope_chain && previous_class_type)
- old_bindings = store_bindings (previous_class_values, old_bindings);
-
- /* Have to include the global scope, because class-scope decls
- aren't listed anywhere useful. */
- for (; b; b = b->level_chain)
- {
- tree t;
-
- /* Template IDs are inserted into the global level. If they were
- inserted into namespace level, finish_file wouldn't find them
- when doing pending instantiations. Therefore, don't stop at
- namespace level, but continue until :: . */
- if (global_scope_p (b) || (pseudo && b->kind == sk_template_parms))
- break;
+static int
+walk_namespaces_r (tree namespace, walk_namespaces_fn f, void* data)
+{
+ int result = 0;
+ tree current = NAMESPACE_LEVEL (namespace)->namespaces;
- old_bindings = store_bindings (b->names, old_bindings);
- /* We also need to check class_shadowed to save class-level type
- bindings, since pushclass doesn't fill in b->names. */
- if (b->kind == sk_class)
- old_bindings = store_bindings (b->class_shadowed, old_bindings);
+ result |= (*f) (namespace, data);
- /* Unwind type-value slots back to top level. */
- for (t = b->type_shadowed; t; t = TREE_CHAIN (t))
- SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t));
- }
- s->prev = scope_chain;
- s->old_bindings = old_bindings;
- s->bindings = b;
- s->need_pop_function_context = need_pop;
- s->function_decl = current_function_decl;
- s->last_parms = last_function_parms;
+ for (; current; current = TREE_CHAIN (current))
+ result |= walk_namespaces_r (current, f, data);
- scope_chain = s;
- current_function_decl = NULL_TREE;
- VARRAY_TREE_INIT (current_lang_base, 10, "current_lang_base");
- current_lang_name = lang_name_cplusplus;
- current_namespace = global_namespace;
- timevar_pop (TV_NAME_LOOKUP);
+ return result;
}
-void
-push_to_top_level (void)
+/* Walk all the namespaces, calling F for each. The DATA is passed to
+ F as well. */
+
+int
+walk_namespaces (walk_namespaces_fn f, void* data)
{
- maybe_push_to_top_level (0);
+ return walk_namespaces_r (global_namespace, f, data);
}
-void
-pop_from_top_level (void)
-{
- struct saved_scope *s = scope_chain;
- cxx_saved_binding *saved;
+/* Walk the global declarations in NAMESPACE. Whenever one is found
+ for which P returns nonzero, call F with its address. If any call
+ to F returns a nonzero value, return a nonzero value. */
- timevar_push (TV_NAME_LOOKUP);
- /* Clear out class-level bindings cache. */
- if (previous_class_type)
- invalidate_class_lookup_cache ();
+static int
+walk_globals_r (tree namespace, void* data)
+{
+ struct walk_globals_data* wgd = (struct walk_globals_data *) data;
+ walk_globals_pred p = wgd->p;
+ walk_globals_fn f = wgd->f;
+ void *d = wgd->data;
+ tree *t;
+ int result = 0;
- current_lang_base = 0;
+ t = &NAMESPACE_LEVEL (namespace)->names;
- scope_chain = s->prev;
- for (saved = s->old_bindings; saved; saved = saved->previous)
+ while (*t)
{
- tree id = saved->identifier;
-
- IDENTIFIER_BINDING (id) = saved->binding;
- IDENTIFIER_CLASS_VALUE (id) = saved->class_value;
- SET_IDENTIFIER_TYPE_VALUE (id, saved->real_type_value);
- }
-
- /* If we were in the middle of compiling a function, restore our
- state. */
- if (s->need_pop_function_context)
- pop_function_context_from (NULL_TREE);
- current_function_decl = s->function_decl;
- last_function_parms = s->last_parms;
- timevar_pop (TV_NAME_LOOKUP);
-}
-\f
-/* Push a definition of struct, union or enum tag named ID. into
- binding_level B. DECL is a TYPE_DECL for the type. We assume that
- the tag ID is not already defined. */
+ tree glbl = *t;
-static void
-set_identifier_type_value_with_scope (tree id,
- tree decl,
- struct cp_binding_level* b)
-{
- tree type;
+ if ((*p) (glbl, d))
+ result |= (*f) (t, d);
- if (b->kind != sk_namespace)
- {
- /* Shadow the marker, not the real thing, so that the marker
- gets restored later. */
- tree old_type_value = REAL_IDENTIFIER_TYPE_VALUE (id);
- b->type_shadowed
- = tree_cons (id, old_type_value, b->type_shadowed);
- type = decl ? TREE_TYPE (decl) : NULL_TREE;
- }
- else
- {
- cxx_binding *binding =
- binding_for_name (NAMESPACE_LEVEL (current_namespace), id);
- if (decl)
- {
- if (binding->value)
- supplement_binding (binding, decl);
- else
- binding->value = decl;
- }
- else
- abort ();
- /* Store marker instead of real type. */
- type = global_type_node;
+ /* If F changed *T, then *T still points at the next item to
+ examine. */
+ if (*t == glbl)
+ t = &TREE_CHAIN (*t);
}
- SET_IDENTIFIER_TYPE_VALUE (id, type);
-}
-/* As set_identifier_type_value_with_scope, but using current_binding_level. */
-
-void
-set_identifier_type_value (tree id, tree decl)
-{
- set_identifier_type_value_with_scope (id, decl, current_binding_level);
+ return result;
}
-/* Return the type associated with id. */
+/* Walk the global declarations. Whenever one is found for which P
+ returns true, call F with its address. If any call to F
+ returns true, return true. */
-tree
-identifier_type_value (tree id)
+bool
+walk_globals (walk_globals_pred p, walk_globals_fn f, void *data)
{
- timevar_push (TV_NAME_LOOKUP);
- /* There is no type with that name, anywhere. */
- if (REAL_IDENTIFIER_TYPE_VALUE (id) == NULL_TREE)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- /* This is not the type marker, but the real thing. */
- if (REAL_IDENTIFIER_TYPE_VALUE (id) != global_type_node)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, REAL_IDENTIFIER_TYPE_VALUE (id));
- /* Have to search for it. It must be on the global level, now.
- Ask lookup_name not to return non-types. */
- id = lookup_name_real (id, 2, 1, 0, LOOKUP_COMPLAIN);
- if (id)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, TREE_TYPE (id));
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
-}
-
-/* Pop off extraneous binding levels left over due to syntax errors.
-
- We don't pop past namespaces, as they might be valid. */
+ struct walk_globals_data wgd;
+ wgd.p = p;
+ wgd.f = f;
+ wgd.data = data;
-void
-pop_everything (void)
-{
- if (ENABLE_SCOPE_CHECKING)
- verbatim ("XXX entering pop_everything ()\n");
- while (!toplevel_bindings_p ())
- {
- if (current_binding_level->kind == sk_class)
- pop_nested_class ();
- else
- poplevel (0, 0, 0);
- }
- if (ENABLE_SCOPE_CHECKING)
- verbatim ("XXX leaving pop_everything ()\n");
+ return walk_namespaces (walk_globals_r, &wgd);
}
-/* The type TYPE is being declared. If it is a class template, or a
- specialization of a class template, do any processing required and
- perform error-checking. If IS_FRIEND is nonzero, this TYPE is
- being declared a friend. B is the binding level at which this TYPE
- should be bound.
-
- Returns the TYPE_DECL for TYPE, which may have been altered by this
- processing. */
+/* Call wrapup_globals_declarations for the globals in NAMESPACE. If
+ DATA is non-NULL, this is the last time we will call
+ wrapup_global_declarations for this NAMESPACE. */
-static tree
-maybe_process_template_type_declaration (tree type,
- int globalize,
- struct cp_binding_level* b)
+int
+wrapup_globals_for_namespace (tree namespace, void* data)
{
- tree decl = TYPE_NAME (type);
-
- if (processing_template_parmlist)
- /* You can't declare a new template type in a template parameter
- list. But, you can declare a non-template type:
-
- template <class A*> struct S;
+ struct cp_binding_level *level = NAMESPACE_LEVEL (namespace);
+ varray_type statics = level->static_decls;
+ tree *vec = &VARRAY_TREE (statics, 0);
+ int len = VARRAY_ACTIVE_SIZE (statics);
+ int last_time = (data != 0);
- is a forward-declaration of `A'. */
- ;
- else
+ if (last_time)
{
- maybe_check_template_type (type);
-
- my_friendly_assert (IS_AGGR_TYPE (type)
- || TREE_CODE (type) == ENUMERAL_TYPE, 0);
-
-
- if (processing_template_decl)
- {
- /* This may change after the call to
- push_template_decl_real, but we want the original value. */
- tree name = DECL_NAME (decl);
-
- decl = push_template_decl_real (decl, globalize);
- /* If the current binding level is the binding level for the
- template parameters (see the comment in
- begin_template_parm_list) and the enclosing level is a class
- scope, and we're not looking at a friend, push the
- declaration of the member class into the class scope. In the
- friend case, push_template_decl will already have put the
- friend into global scope, if appropriate. */
- if (TREE_CODE (type) != ENUMERAL_TYPE
- && !globalize && b->kind == sk_template_parms
- && b->level_chain->kind == sk_class)
- {
- finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type));
- /* Put this UDT in the table of UDTs for the class, since
- that won't happen below because B is not the class
- binding level, but is instead the pseudo-global level. */
- if (b->level_chain->type_decls == NULL)
- b->level_chain->type_decls =
- binding_table_new (SCOPE_DEFAULT_HT_SIZE);
- binding_table_insert (b->level_chain->type_decls, name, type);
- if (!COMPLETE_TYPE_P (current_class_type))
- {
- maybe_add_class_template_decl_list (current_class_type,
- type, /*friend_p=*/0);
- CLASSTYPE_NESTED_UTDS (current_class_type) =
- b->level_chain->type_decls;
- }
- }
- }
+ check_global_declarations (vec, len);
+ return 0;
}
- return decl;
+ /* Write out any globals that need to be output. */
+ return wrapup_global_declarations (vec, len);
}
+\f
/* In C++, you don't have to write `struct S' to refer to `S'; you
can just use `S'. We accomplish this by creating a TYPE_DECL as
if the user had written `typedef struct S S'. Create and return
timevar_pop (TV_NAME_LOOKUP);
}
-/* Push a tag name NAME for struct/class/union/enum type TYPE.
- Normally put it into the inner-most non-sk_cleanup scope,
- but if GLOBALIZE is true, put it in the inner-most non-class scope.
- The latter is needed for implicit declarations. */
-
-void
-pushtag (tree name, tree type, int globalize)
-{
- register struct cp_binding_level *b;
-
- timevar_push (TV_NAME_LOOKUP);
- b = current_binding_level;
- while (b->kind == sk_cleanup
- || (b->kind == sk_class
- && (globalize
- /* We may be defining a new type in the initializer
- of a static member variable. We allow this when
- not pedantic, and it is particularly useful for
- type punning via an anonymous union. */
- || COMPLETE_TYPE_P (b->this_entity))))
- b = b->level_chain;
-
- if (b->type_decls == NULL)
- b->type_decls = binding_table_new (SCOPE_DEFAULT_HT_SIZE);
- binding_table_insert (b->type_decls, name, type);
-
- if (name)
- {
- /* Do C++ gratuitous typedefing. */
- if (IDENTIFIER_TYPE_VALUE (name) != type)
- {
- register tree d = NULL_TREE;
- int in_class = 0;
- tree context = TYPE_CONTEXT (type);
-
- if (! context)
- {
- tree cs = current_scope ();
-
- if (! globalize)
- context = cs;
- else if (cs != NULL_TREE && TYPE_P (cs))
- /* When declaring a friend class of a local class, we want
- to inject the newly named class into the scope
- containing the local class, not the namespace scope. */
- context = decl_function_context (get_type_decl (cs));
- }
- if (!context)
- context = current_namespace;
-
- if (b->kind == sk_class
- || (b->kind == sk_template_parms
- && b->level_chain->kind == sk_class))
- in_class = 1;
-
- if (current_lang_name == lang_name_java)
- TYPE_FOR_JAVA (type) = 1;
-
- d = create_implicit_typedef (name, type);
- DECL_CONTEXT (d) = FROB_CONTEXT (context);
- if (! in_class)
- set_identifier_type_value_with_scope (name, d, b);
-
- d = maybe_process_template_type_declaration (type,
- globalize, b);
-
- if (b->kind == sk_class)
- {
- if (!PROCESSING_REAL_TEMPLATE_DECL_P ())
- /* Put this TYPE_DECL on the TYPE_FIELDS list for the
- class. But if it's a member template class, we
- want the TEMPLATE_DECL, not the TYPE_DECL, so this
- is done later. */
- finish_member_declaration (d);
- else
- pushdecl_class_level (d);
- }
- else
- d = pushdecl_with_scope (d, b);
-
- /* FIXME what if it gets a name from typedef? */
- if (ANON_AGGRNAME_P (name))
- DECL_IGNORED_P (d) = 1;
-
- TYPE_CONTEXT (type) = DECL_CONTEXT (d);
-
- /* If this is a local class, keep track of it. We need this
- information for name-mangling, and so that it is possible to find
- all function definitions in a translation unit in a convenient
- way. (It's otherwise tricky to find a member function definition
- it's only pointed to from within a local class.) */
- if (TYPE_CONTEXT (type)
- && TREE_CODE (TYPE_CONTEXT (type)) == FUNCTION_DECL
- && !processing_template_decl)
- VARRAY_PUSH_TREE (local_classes, type);
- }
- if (b->kind == sk_class
- && !COMPLETE_TYPE_P (current_class_type))
- {
- maybe_add_class_template_decl_list (current_class_type,
- type, /*friend_p=*/0);
- CLASSTYPE_NESTED_UTDS (current_class_type) = b->type_decls;
- }
- }
-
- if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
- /* Use the canonical TYPE_DECL for this node. */
- TYPE_STUB_DECL (type) = TYPE_NAME (type);
- else
- {
- /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
- will be the tagged type we just added to the current
- binding level. This fake NULL-named TYPE_DECL node helps
- dwarfout.c to know when it needs to output a
- representation of a tagged type, and it also gives us a
- convenient place to record the "scope start" address for
- the tagged type. */
-
- tree d = build_decl (TYPE_DECL, NULL_TREE, type);
- TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
- }
- timevar_pop (TV_NAME_LOOKUP);
-}
-
/* Counter used to create anonymous type names. */
static GTY(()) int anon_cnt;
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, x);
}
-/* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
- caller to set DECL_CONTEXT properly. */
-
-static tree
-pushdecl_with_scope (tree x, struct cp_binding_level* level)
-{
- register struct cp_binding_level *b;
- tree function_decl = current_function_decl;
-
- timevar_push (TV_NAME_LOOKUP);
- current_function_decl = NULL_TREE;
- if (level->kind == sk_class)
- {
- b = class_binding_level;
- class_binding_level = level;
- pushdecl_class_level (x);
- class_binding_level = b;
- }
- else
- {
- b = current_binding_level;
- current_binding_level = level;
- x = pushdecl (x);
- current_binding_level = b;
- }
- current_function_decl = function_decl;
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, x);
-}
-
-/* Like pushdecl, only it places X in the current namespace,
- if appropriate. */
-
-tree
-pushdecl_namespace_level (tree x)
-{
- register struct cp_binding_level *b = current_binding_level;
- register tree t;
-
- timevar_push (TV_NAME_LOOKUP);
- t = pushdecl_with_scope (x, NAMESPACE_LEVEL (current_namespace));
-
- /* Now, the type_shadowed stack may screw us. Munge it so it does
- what we want. */
- if (TREE_CODE (x) == TYPE_DECL)
- {
- tree name = DECL_NAME (x);
- tree newval;
- tree *ptr = (tree *)0;
- for (; !global_scope_p (b); b = b->level_chain)
- {
- tree shadowed = b->type_shadowed;
- for (; shadowed; shadowed = TREE_CHAIN (shadowed))
- if (TREE_PURPOSE (shadowed) == name)
- {
- ptr = &TREE_VALUE (shadowed);
- /* Can't break out of the loop here because sometimes
- a binding level will have duplicate bindings for
- PT names. It's gross, but I haven't time to fix it. */
- }
- }
- newval = TREE_TYPE (x);
- if (ptr == (tree *)0)
- {
- /* @@ This shouldn't be needed. My test case "zstring.cc" trips
- up here if this is changed to an assertion. --KR */
- SET_IDENTIFIER_TYPE_VALUE (name, x);
- }
- else
- {
- *ptr = newval;
- }
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
-}
-
/* Like pushdecl, only it places X in the global scope if appropriate.
Calls cp_finish_decl to register the variable, initializing it with
*INIT, if INIT is non-NULL. */
return pushdecl_top_level_1 (x, &init);
}
-/* Make the declaration of X appear in CLASS scope. */
-
-bool
-pushdecl_class_level (tree x)
-{
- tree name;
- bool is_valid = true;
-
- timevar_push (TV_NAME_LOOKUP);
- /* Get the name of X. */
- if (TREE_CODE (x) == OVERLOAD)
- name = DECL_NAME (get_first_fn (x));
- else
- name = DECL_NAME (x);
-
- if (name)
- {
- is_valid = push_class_level_binding (name, x);
- if (TREE_CODE (x) == TYPE_DECL)
- set_identifier_type_value (name, x);
- }
- else if (ANON_AGGR_TYPE_P (TREE_TYPE (x)))
- {
- /* If X is an anonymous aggregate, all of its members are
- treated as if they were members of the class containing the
- aggregate, for naming purposes. */
- tree f;
-
- for (f = TYPE_FIELDS (TREE_TYPE (x)); f; f = TREE_CHAIN (f))
- {
- location_t save_location = input_location;
- input_location = DECL_SOURCE_LOCATION (f);
- if (!pushdecl_class_level (f))
- is_valid = false;
- input_location = save_location;
- }
- }
- timevar_pop (TV_NAME_LOOKUP);
-
- return is_valid;
-}
-
/* Enter DECL into the symbol table, if that's appropriate. Returns
DECL, or a modified version thereof. */
return pushdecl (decl);
}
-/* Make the declaration(s) of X appear in CLASS scope under the name
- NAME. Returns true if the binding is valid. */
-
-bool
-push_class_level_binding (tree name, tree x)
-{
- cxx_binding *binding;
-
- timevar_push (TV_NAME_LOOKUP);
- /* The class_binding_level will be NULL if x is a template
- parameter name in a member template. */
- if (!class_binding_level)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
-
- /* Make sure that this new member does not have the same name
- as a template parameter. */
- if (TYPE_BEING_DEFINED (current_class_type))
- check_template_shadow (x);
-
- /* If this declaration shadows a declaration from an enclosing
- class, then we will need to restore IDENTIFIER_CLASS_VALUE when
- we leave this class. Record the shadowed declaration here. */
- binding = IDENTIFIER_BINDING (name);
- if (binding && binding->value)
- {
- tree bval = binding->value;
- tree old_decl = NULL_TREE;
-
- if (INHERITED_VALUE_BINDING_P (binding))
- {
- /* If the old binding was from a base class, and was for a
- tag name, slide it over to make room for the new binding.
- The old binding is still visible if explicitly qualified
- with a class-key. */
- if (TREE_CODE (bval) == TYPE_DECL && DECL_ARTIFICIAL (bval)
- && !(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)))
- {
- old_decl = binding->type;
- binding->type = bval;
- binding->value = NULL_TREE;
- INHERITED_VALUE_BINDING_P (binding) = 0;
- }
- else
- old_decl = bval;
- }
- else if (TREE_CODE (x) == OVERLOAD && is_overloaded_fn (bval))
- old_decl = bval;
- else if (TREE_CODE (x) == USING_DECL && TREE_CODE (bval) == USING_DECL)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
- else if (TREE_CODE (x) == USING_DECL && is_overloaded_fn (bval))
- old_decl = bval;
- else if (TREE_CODE (bval) == USING_DECL && is_overloaded_fn (x))
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
-
- if (old_decl)
- {
- tree shadow;
-
- /* Find the previous binding of name on the class-shadowed
- list, and update it. */
- for (shadow = class_binding_level->class_shadowed;
- shadow;
- shadow = TREE_CHAIN (shadow))
- if (TREE_PURPOSE (shadow) == name
- && TREE_TYPE (shadow) == old_decl)
- {
- binding->value = x;
- INHERITED_VALUE_BINDING_P (binding) = 0;
- TREE_TYPE (shadow) = x;
- IDENTIFIER_CLASS_VALUE (name) = x;
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
- }
- }
- }
-
- /* If we didn't replace an existing binding, put the binding on the
- stack of bindings for the identifier, and update the shadowed list. */
- if (push_class_binding (name, x))
- {
- class_binding_level->class_shadowed
- = tree_cons (name, NULL,
- class_binding_level->class_shadowed);
- /* Record the value we are binding NAME to so that we can know
- what to pop later. */
- TREE_TYPE (class_binding_level->class_shadowed) = x;
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
- }
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, false);
-}
-
/* Insert another USING_DECL into the current binding level, returning
this declaration. If this is a redeclaration, do nothing, and
return NULL_TREE if this not in namespace scope (in namespace
for (decl = current_binding_level->usings; decl; decl = TREE_CHAIN (decl))
if (DECL_INITIAL (decl) == scope && DECL_NAME (decl) == name)
break;
- if (decl)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP,
- namespace_bindings_p () ? decl : NULL_TREE);
- decl = build_lang_decl (USING_DECL, name, void_type_node);
- DECL_INITIAL (decl) = scope;
- TREE_CHAIN (decl) = current_binding_level->usings;
- current_binding_level->usings = decl;
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
-}
-
-/* Add namespace to using_directives. Return NULL_TREE if nothing was
- changed (i.e. there was already a directive), or the fresh
- TREE_LIST otherwise. */
-
-tree
-push_using_directive (tree used)
-{
- tree ud = current_binding_level->using_directives;
- tree iter, ancestor;
-
- timevar_push (TV_NAME_LOOKUP);
- /* Check if we already have this. */
- if (purpose_member (used, ud) != NULL_TREE)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
-
- ancestor = namespace_ancestor (current_decl_namespace (), used);
- ud = current_binding_level->using_directives;
- ud = tree_cons (used, ancestor, ud);
- current_binding_level->using_directives = ud;
-
- /* Recursively add all namespaces used. */
- for (iter = DECL_NAMESPACE_USING (used); iter; iter = TREE_CHAIN (iter))
- push_using_directive (TREE_PURPOSE (iter));
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, ud);
+ if (decl)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP,
+ namespace_bindings_p () ? decl : NULL_TREE);
+ decl = build_lang_decl (USING_DECL, name, void_type_node);
+ DECL_INITIAL (decl) = scope;
+ TREE_CHAIN (decl) = current_binding_level->usings;
+ current_binding_level->usings = decl;
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, decl);
}
/* DECL is a FUNCTION_DECL for a non-member function, which may have
return r;
}
\f
-/* Return the list of declarations of the current level.
- Note that this list is in reverse order unless/until
- you nreverse it; and when you do nreverse it, you must
- store the result back using `storedecls' or you will lose. */
-
-tree
-getdecls (void)
-{
- return current_binding_level->names;
-}
-
-/* Store the list of declarations of the current level.
- This is done for the parameter declarations of a function being defined,
- after they are modified in the light of any missing parameters. */
-
-static void
-storedecls (tree decls)
-{
- current_binding_level->names = decls;
-}
-
-/* Set the current binding TABLE for type declarations.. This is a
- temporary workaround of the fact that the data structure classtypes
- does not currently carry its allocated cxx_scope structure. */
-void
-cxx_remember_type_decls (binding_table table)
-{
- current_binding_level->type_decls = table;
-}
-\f
-/* Return the type that should be used when TYPE's name is preceded
- by a tag such as 'struct' or 'union', or null if the name cannot
- be used in this way.
-
- For example, when processing the third line of:
-
- struct A;
- typedef struct A A;
- struct A;
-
- lookup of A will find the typedef. Given A's typedef, this function
- will return the type associated with "struct A". For the tag to be
- anything other than TYPE, TYPE must be a typedef whose original type
- has the same name and context as TYPE itself.
-
- It is not valid for a typedef of an anonymous type to be used with
- an explicit tag:
-
- typedef struct { ... } B;
- struct B;
-
- Return null for this case. */
-
-static tree
-follow_tag_typedef (tree type)
-{
- tree original;
-
- original = original_type (type);
- if (! TYPE_NAME (original))
- return NULL_TREE;
- if (TYPE_IDENTIFIER (original) == TYPE_IDENTIFIER (type)
- && (CP_DECL_CONTEXT (TYPE_NAME (original))
- == CP_DECL_CONTEXT (TYPE_NAME (type)))
- && !(CLASS_TYPE_P (original) && TYPE_WAS_ANONYMOUS (original)))
- return original;
- else
- return NULL_TREE;
-}
-
-/* Given NAME, an IDENTIFIER_NODE,
- return the structure (or union or enum) definition for that name.
- Searches binding levels from its SCOPE up to the global level.
- If THISLEVEL_ONLY is nonzero, searches only the specified context
- (but skips any sk_cleanup contexts to find one that is
- meaningful for tags).
- FORM says which kind of type the caller wants;
- it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
- If the wrong kind of type is found, and it's not a template, an error is
- reported. */
-
-static tree
-lookup_tag (enum tree_code form, tree name,
- struct cp_binding_level* binding_level, int thislevel_only)
-{
- register struct cp_binding_level *level;
- /* Nonzero if, we should look past a template parameter level, even
- if THISLEVEL_ONLY. */
- int allow_template_parms_p = 1;
- bool type_is_anonymous = ANON_AGGRNAME_P (name);
-
- timevar_push (TV_NAME_LOOKUP);
- for (level = binding_level; level; level = level->level_chain)
- {
- register tree tail;
- if (type_is_anonymous && level->type_decls != NULL)
- {
- tree type = binding_table_find_anon_type (level->type_decls, name);
- /* There is no need for error checking here, because
- anon names are unique throughout the compilation. */
- if (type != NULL)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, type);
- }
- else if (level->kind == sk_namespace)
- /* Do namespace lookup. */
- for (tail = current_namespace; 1; tail = CP_DECL_CONTEXT (tail))
- {
- cxx_binding *binding =
- cxx_scope_find_binding_for_name (NAMESPACE_LEVEL (tail), name);
- tree old;
-
- /* If we just skipped past a template parameter level,
- even though THISLEVEL_ONLY, and we find a template
- class declaration, then we use the _TYPE node for the
- template. See the example below. */
- if (thislevel_only && !allow_template_parms_p
- && binding && binding->value
- && DECL_CLASS_TEMPLATE_P (binding->value))
- old = binding->value;
- else if (binding)
- old = select_decl (binding, LOOKUP_PREFER_TYPES);
- else
- old = NULL_TREE;
-
- if (old)
- {
- /* We've found something at this binding level. If it is
- a typedef, extract the tag it refers to. Lookup fails
- if the typedef doesn't refer to a taggable type. */
- old = TREE_TYPE (old);
- old = follow_tag_typedef (old);
- if (!old)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- if (TREE_CODE (old) != form
- && (form == ENUMERAL_TYPE
- || TREE_CODE (old) == ENUMERAL_TYPE))
- {
- error ("`%#D' redeclared as %C", old, form);
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, old);
- }
- if (thislevel_only || tail == global_namespace)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- }
- else if (level->type_decls != NULL)
- {
- binding_entry entry = binding_table_find (level->type_decls, name);
- if (entry != NULL)
- {
- enum tree_code code = TREE_CODE (entry->type);
-
- if (code != form
- && (form == ENUMERAL_TYPE || code == ENUMERAL_TYPE))
- {
- /* Definition isn't the kind we were looking for. */
- error ("`%#D' redeclared as %C", entry->type, form);
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, entry->type);
- }
- }
- if (thislevel_only && level->kind != sk_cleanup)
- {
- if (level->kind == sk_template_parms && allow_template_parms_p)
- {
- /* We must deal with cases like this:
-
- template <class T> struct S;
- template <class T> struct S {};
-
- When looking up `S', for the second declaration, we
- would like to find the first declaration. But, we
- are in the pseudo-global level created for the
- template parameters, rather than the (surrounding)
- namespace level. Thus, we keep going one more level,
- even though THISLEVEL_ONLY is nonzero. */
- allow_template_parms_p = 0;
- continue;
- }
- else
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- }
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
-}
-
-/* Given a type, find the tag that was defined for it and return the tag name.
- Otherwise return 0. However, the value can never be 0
- in the cases in which this is used.
-
- C++: If NAME is nonzero, this is the new name to install. This is
- done when replacing anonymous tags with real tag names. */
-
-static tree
-lookup_tag_reverse (tree type, tree name)
-{
- register struct cp_binding_level *level;
-
- timevar_push (TV_NAME_LOOKUP);
- for (level = current_binding_level; level; level = level->level_chain)
- {
- binding_entry entry = level->type_decls == NULL
- ? NULL
- : binding_table_reverse_maybe_remap (level->type_decls, type, name);
- if (entry)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, entry->name);
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
-}
-\f
-/* Look up NAME in the NAMESPACE. */
-
-tree
-lookup_namespace_name (tree namespace, tree name)
-{
- tree val;
- tree template_id = NULL_TREE;
- cxx_binding binding;
-
- timevar_push (TV_NAME_LOOKUP);
- my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370);
-
- if (TREE_CODE (name) == NAMESPACE_DECL)
- /* This happens for A::B<int> when B is a namespace. */
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, name);
- else if (TREE_CODE (name) == TEMPLATE_DECL)
- {
- /* This happens for A::B where B is a template, and there are no
- template arguments. */
- error ("invalid use of `%D'", name);
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
- }
-
- namespace = ORIGINAL_NAMESPACE (namespace);
-
- if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
- {
- template_id = name;
- name = TREE_OPERAND (name, 0);
- if (TREE_CODE (name) == OVERLOAD)
- name = DECL_NAME (OVL_CURRENT (name));
- else if (DECL_P (name))
- name = DECL_NAME (name);
- }
-
- my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373);
-
- cxx_binding_clear (&binding);
- if (!qualified_lookup_using_namespace (name, namespace, &binding, 0))
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
-
- if (binding.value)
- {
- val = binding.value;
-
- if (template_id)
- {
- if (DECL_CLASS_TEMPLATE_P (val))
- val = lookup_template_class (val,
- TREE_OPERAND (template_id, 1),
- /*in_decl=*/NULL_TREE,
- /*context=*/NULL_TREE,
- /*entering_scope=*/0,
- tf_error | tf_warning);
- else if (DECL_FUNCTION_TEMPLATE_P (val)
- || TREE_CODE (val) == OVERLOAD)
- val = lookup_template_function (val,
- TREE_OPERAND (template_id, 1));
- else
- {
- error ("`%D::%D' is not a template",
- namespace, name);
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
- }
- }
-
- /* If we have a single function from a using decl, pull it out. */
- if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
- val = OVL_FUNCTION (val);
-
- /* Ignore built-in functions that haven't been prototyped yet. */
- if (!val || !DECL_P(val)
- || !DECL_LANG_SPECIFIC(val)
- || !DECL_ANTICIPATED (val))
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
- }
-
- error ("`%D' undeclared in namespace `%D'", name, namespace);
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
-}
-
/* Hash a TYPENAME_TYPE. K is really of type `tree'. */
static hashval_t
return t;
}
-/* Select the right _DECL from multiple choices. */
-
-static tree
-select_decl (cxx_binding *binding, int flags)
-{
- tree val;
- val = binding->value;
-
- timevar_push (TV_NAME_LOOKUP);
- if (LOOKUP_NAMESPACES_ONLY (flags))
- {
- /* We are not interested in types. */
- if (val && TREE_CODE (val) == NAMESPACE_DECL)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- }
-
- /* If looking for a type, or if there is no non-type binding, select
- the value binding. */
- if (binding->type && (!val || (flags & LOOKUP_PREFER_TYPES)))
- val = binding->type;
- /* Don't return non-types if we really prefer types. */
- else if (val && LOOKUP_TYPES_ONLY (flags) && TREE_CODE (val) != TYPE_DECL
- && (TREE_CODE (val) != TEMPLATE_DECL
- || !DECL_CLASS_TEMPLATE_P (val)))
- val = NULL_TREE;
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
-}
-
-/* Unscoped lookup of a global: iterate over current namespaces,
- considering using-directives. If SPACESP is non-NULL, store a list
- of the namespaces we've considered in it. */
-
-tree
-unqualified_namespace_lookup (tree name, int flags, tree* spacesp)
-{
- tree initial = current_decl_namespace ();
- tree scope = initial;
- tree siter;
- struct cp_binding_level *level;
- tree val = NULL_TREE;
- cxx_binding binding;
-
- timevar_push (TV_NAME_LOOKUP);
- cxx_binding_clear (&binding);
- if (spacesp)
- *spacesp = NULL_TREE;
-
- for (; !val; scope = CP_DECL_CONTEXT (scope))
- {
- cxx_binding *b =
- cxx_scope_find_binding_for_name (NAMESPACE_LEVEL (scope), name);
- if (spacesp)
- *spacesp = tree_cons (scope, NULL_TREE, *spacesp);
-
- /* Ignore anticipated built-in functions. */
- if (b && b->value && DECL_P (b->value)
- && DECL_LANG_SPECIFIC (b->value) && DECL_ANTICIPATED (b->value))
- /* Keep binding cleared. */;
- else if (b)
- {
- /* Initialize binding for this context. */
- binding.value = b->value;
- binding.type = b->type;
- }
-
- /* Add all _DECLs seen through local using-directives. */
- for (level = current_binding_level;
- level->kind != sk_namespace;
- level = level->level_chain)
- if (!lookup_using_namespace (name, &binding, level->using_directives,
- scope, flags, spacesp))
- /* Give up because of error. */
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
-
- /* Add all _DECLs seen through global using-directives. */
- /* XXX local and global using lists should work equally. */
- siter = initial;
- while (1)
- {
- if (!lookup_using_namespace (name, &binding,
- DECL_NAMESPACE_USING (siter),
- scope, flags, spacesp))
- /* Give up because of error. */
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
- if (siter == scope) break;
- siter = CP_DECL_CONTEXT (siter);
- }
-
- val = select_decl (&binding, flags);
- if (scope == global_namespace)
- break;
- }
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
-}
-
-/* Combine prefer_type and namespaces_only into flags. */
-
-static int
-lookup_flags (int prefer_type, int namespaces_only)
-{
- if (namespaces_only)
- return LOOKUP_PREFER_NAMESPACES;
- if (prefer_type > 1)
- return LOOKUP_PREFER_TYPES;
- if (prefer_type > 0)
- return LOOKUP_PREFER_BOTH;
- return 0;
-}
-
-/* Given a lookup that returned VAL, use FLAGS to decide if we want to
- ignore it or not. Subroutine of lookup_name_real. */
-
-static tree
-qualify_lookup (tree val, int flags)
-{
- if (val == NULL_TREE)
- return val;
- if ((flags & LOOKUP_PREFER_NAMESPACES) && TREE_CODE (val) == NAMESPACE_DECL)
- return val;
- if ((flags & LOOKUP_PREFER_TYPES)
- && (TREE_CODE (val) == TYPE_DECL || TREE_CODE (val) == TEMPLATE_DECL))
- return val;
- if (flags & (LOOKUP_PREFER_NAMESPACES | LOOKUP_PREFER_TYPES))
- return NULL_TREE;
- return val;
-}
-
-/* Look up NAME (an IDENTIFIER_NODE) in SCOPE (either a NAMESPACE_DECL
- or a class TYPE). If IS_TYPE_P is TRUE, then ignore non-type
- bindings.
-
- Returns a DECL (or OVERLOAD, or BASELINK) representing the
- declaration found. If no suitable declaration can be found,
- ERROR_MARK_NODE is returned. Iif COMPLAIN is true and SCOPE is
- neither a class-type nor a namespace a diagnostic is issued. */
-
-tree
-lookup_qualified_name (tree scope, tree name, bool is_type_p, bool complain)
-{
- int flags = 0;
-
- if (TREE_CODE (scope) == NAMESPACE_DECL)
- {
- cxx_binding binding;
-
- cxx_binding_clear (&binding);
- flags |= LOOKUP_COMPLAIN;
- if (is_type_p)
- flags |= LOOKUP_PREFER_TYPES;
- if (qualified_lookup_using_namespace (name, scope, &binding,
- flags))
- return select_decl (&binding, flags);
- }
- else if (is_aggr_type (scope, complain))
- {
- tree t;
- t = lookup_member (scope, name, 0, is_type_p);
- if (t)
- return t;
- }
-
- return error_mark_node;
-}
-
/* Check to see whether or not DECL is a variable that would have been
in scope under the ARM, but is not in scope under the ANSI/ISO
standard. If so, issue an error message. If name lookup would
return decl;
}
-/* Look up NAME in the current binding level and its superiors in the
- namespace of variables, functions and typedefs. Return a ..._DECL
- node of some kind representing its definition if there is only one
- such declaration, or return a TREE_LIST with all the overloaded
- definitions if there are many, or return 0 if it is undefined.
-
- If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
- If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
- Otherwise we prefer non-TYPE_DECLs.
-
- If NONCLASS is nonzero, we don't look for the NAME in class scope,
- using IDENTIFIER_CLASS_VALUE. */
-
-tree
-lookup_name_real (tree name, int prefer_type, int nonclass,
- int namespaces_only, int flags)
-{
- cxx_binding *iter;
- tree val = NULL_TREE;
-
- timevar_push (TV_NAME_LOOKUP);
- /* Conversion operators are handled specially because ordinary
- unqualified name lookup will not find template conversion
- operators. */
- if (IDENTIFIER_TYPENAME_P (name))
- {
- struct cp_binding_level *level;
-
- for (level = current_binding_level;
- level && level->kind != sk_namespace;
- level = level->level_chain)
- {
- tree class_type;
- tree operators;
-
- /* A conversion operator can only be declared in a class
- scope. */
- if (level->kind != sk_class)
- continue;
-
- /* Lookup the conversion operator in the class. */
- class_type = level->this_entity;
- operators = lookup_fnfields (class_type, name, /*protect=*/0);
- if (operators)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, operators);
- }
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
- }
-
- flags |= lookup_flags (prefer_type, namespaces_only);
-
- /* First, look in non-namespace scopes. */
-
- if (current_class_type == NULL_TREE)
- nonclass = 1;
-
- for (iter = IDENTIFIER_BINDING (name); iter; iter = iter->previous)
- {
- tree binding;
-
- if (!LOCAL_BINDING_P (iter) && nonclass)
- /* We're not looking for class-scoped bindings, so keep going. */
- continue;
-
- /* If this is the kind of thing we're looking for, we're done. */
- if (qualify_lookup (iter->value, flags))
- binding = iter->value;
- else if ((flags & LOOKUP_PREFER_TYPES)
- && qualify_lookup (iter->type, flags))
- binding = iter->type;
- else
- binding = NULL_TREE;
-
- if (binding)
- {
- val = binding;
- break;
- }
- }
-
- /* Now lookup in namespace scopes. */
- if (!val)
- {
- tree t = unqualified_namespace_lookup (name, flags, 0);
- if (t)
- val = t;
- }
-
- if (val)
- {
- /* If we have a single function from a using decl, pull it out. */
- if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
- val = OVL_FUNCTION (val);
- }
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
-}
-
-tree
-lookup_name_nonclass (tree name)
-{
- return lookup_name_real (name, 0, 1, 0, LOOKUP_COMPLAIN);
-}
-
-tree
-lookup_function_nonclass (tree name, tree args)
-{
- return lookup_arg_dependent (name, lookup_name_nonclass (name), args);
-}
-
-tree
-lookup_name (tree name, int prefer_type)
-{
- return lookup_name_real (name, prefer_type, 0, 0, LOOKUP_COMPLAIN);
-}
-
-/* Similar to `lookup_name' but look only in the innermost non-class
- binding level. */
-
-tree
-lookup_name_current_level (tree name)
-{
- struct cp_binding_level *b;
- tree t = NULL_TREE;
-
- timevar_push (TV_NAME_LOOKUP);
- b = innermost_nonclass_level ();
-
- if (b->kind == sk_namespace)
- {
- t = IDENTIFIER_NAMESPACE_VALUE (name);
-
- /* extern "C" function() */
- if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
- t = TREE_VALUE (t);
- }
- else if (IDENTIFIER_BINDING (name)
- && LOCAL_BINDING_P (IDENTIFIER_BINDING (name)))
- {
- while (1)
- {
- if (IDENTIFIER_BINDING (name)->scope == b)
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, IDENTIFIER_VALUE (name));
-
- if (b->kind == sk_cleanup)
- b = b->level_chain;
- else
- break;
- }
- }
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
-}
-
-/* Like lookup_name_current_level, but for types. */
-
-tree
-lookup_type_current_level (tree name)
-{
- register tree t = NULL_TREE;
-
- timevar_push (TV_NAME_LOOKUP);
- my_friendly_assert (current_binding_level->kind != sk_namespace,
- 980716);
-
- if (REAL_IDENTIFIER_TYPE_VALUE (name) != NULL_TREE
- && REAL_IDENTIFIER_TYPE_VALUE (name) != global_type_node)
- {
- struct cp_binding_level *b = current_binding_level;
- while (1)
- {
- if (purpose_member (name, b->type_shadowed))
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP,
- REAL_IDENTIFIER_TYPE_VALUE (name));
- if (b->kind == sk_cleanup)
- b = b->level_chain;
- else
- break;
- }
- }
-
- POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
-}
-
\f
/* A chain of TYPE_DECLs for the builtin types. */
/* Must clear this because it might contain TYPE_DECLs declared
at class level. */
- storedecls (NULL_TREE);
+ current_binding_level->names = NULL;
/* If we're doing semantic analysis, then we'll call pushdecl
for each of these. We must do them in reverse order so that
as the decl-chain of the current lexical scope.
Put the enumerators in as well, at the front so that
DECL_ARGUMENTS is not modified. */
- storedecls (chainon (nonparms, DECL_ARGUMENTS (fndecl)));
+ current_binding_level->names = chainon (nonparms, DECL_ARGUMENTS (fndecl));
/* Do the starting of the exception specifications, if we have any. */
if (flag_exceptions && !processing_template_decl
}
}
-/* Return the IDENTIFIER_GLOBAL_VALUE of T, for use in common code, since
- the definition of IDENTIFIER_GLOBAL_VALUE is different for C and C++. */
-
-tree
-identifier_global_value (tree t)
-{
- return IDENTIFIER_GLOBAL_VALUE (t);
-}
-
/* Build the void_list_node (void_type_node having been created). */
tree
build_void_list_node (void)
#include "name-lookup.h"
#include "timevar.h"
#include "toplev.h"
+#include "diagnostic.h"
+
+static cxx_scope *innermost_nonclass_level (void);
+static tree select_decl (cxx_binding *, int);
+
/* Compute the chain index of a binding_entry given the HASH value of its
name and the total COUNT of chains. COUNT is assumed to be a power
/* Make TABLE's entries ready for reuse. */
-void
+static void
binding_table_free (binding_table table)
{
size_t i;
/* Allocate a table with CHAIN_COUNT, assumed to be a power of two. */
-binding_table
+static inline binding_table
binding_table_new (size_t chain_count)
{
binding_table table = ggc_alloc (sizeof (struct binding_table_s));
/* Insert a binding for NAME to TYPE into TABLE. */
-void
+static void
binding_table_insert (binding_table table, tree name, tree type)
{
const unsigned int hash = IDENTIFIER_HASH_VALUE (name);
/* Return the binding_entry, if any, that maps NAME to an anonymous type. */
-tree
+static tree
binding_table_find_anon_type (binding_table table, tree name)
{
const unsigned int hash = IDENTIFIER_HASH_VALUE (name);
/* Return the binding_entry, if any, that has TYPE as target. If NAME
is non-null, then set the domain and rehash that entry. */
-binding_entry
+static binding_entry
binding_table_reverse_maybe_remap (binding_table table, tree type, tree name)
{
const size_t chain_count = table->chain_count;
}
}
\f
+#ifndef ENABLE_SCOPE_CHECKING
+# define ENABLE_SCOPE_CHECKING 0
+#else
+# define ENABLE_SCOPE_CHECKING 1
+#endif
/* A free list of "cxx_binding"s, connected by their PREVIOUS. */
/* (GC)-allocate a binding object with VALUE and TYPE member initialized. */
-cxx_binding *
+static cxx_binding *
cxx_binding_make (tree value, tree type)
{
cxx_binding *binding;
/* Put BINDING back on the free list. */
-void
+static inline void
cxx_binding_free (cxx_binding *binding)
{
binding->scope = NULL;
free_bindings = binding;
}
+/* Make DECL the innermost binding for ID. The LEVEL is the binding
+ level at which this declaration is being bound. */
+
+static void
+push_binding (tree id, tree decl, cxx_scope* level)
+{
+ cxx_binding *binding = cxx_binding_make (decl, NULL);
+
+ /* Now, fill in the binding information. */
+ binding->previous = IDENTIFIER_BINDING (id);
+ binding->scope = level;
+ INHERITED_VALUE_BINDING_P (binding) = 0;
+ LOCAL_BINDING_P (binding) = (level != class_binding_level);
+
+ /* And put it on the front of the list of bindings for ID. */
+ IDENTIFIER_BINDING (id) = binding;
+}
+
+/* Remove the binding for DECL which should be the innermost binding
+ for ID. */
+
+void
+pop_binding (tree id, tree decl)
+{
+ cxx_binding *binding;
+
+ if (id == NULL_TREE)
+ /* It's easiest to write the loops that call this function without
+ checking whether or not the entities involved have names. We
+ get here for such an entity. */
+ return;
+
+ /* Get the innermost binding for ID. */
+ binding = IDENTIFIER_BINDING (id);
+
+ /* The name should be bound. */
+ my_friendly_assert (binding != NULL, 0);
+
+ /* The DECL will be either the ordinary binding or the type
+ binding for this identifier. Remove that binding. */
+ if (binding->value == decl)
+ binding->value = NULL_TREE;
+ else if (binding->type == decl)
+ binding->type = NULL_TREE;
+ else
+ abort ();
+
+ if (!binding->value && !binding->type)
+ {
+ /* We're completely done with the innermost binding for this
+ identifier. Unhook it from the list of bindings. */
+ IDENTIFIER_BINDING (id) = binding->previous;
+
+ /* Add it to the free list. */
+ cxx_binding_free (binding);
+ }
+}
+
/* BINDING records an existing declaration for a namein the current scope.
But, DECL is another declaration for that same identifier in the
same scope. This is the `struct stat' hack whereby a non-typedef
inserting this name is valid here. Returns nonzero if the new binding
was successful. */
-bool
+static bool
supplement_binding (cxx_binding *binding, tree decl)
{
tree bval = binding->value;
POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, ok);
}
+
+/* Add DECL to the list of things declared in B. */
+
+void
+add_decl_to_level (tree decl, cxx_scope *b)
+{
+ if (TREE_CODE (decl) == NAMESPACE_DECL
+ && !DECL_NAMESPACE_ALIAS (decl))
+ {
+ TREE_CHAIN (decl) = b->namespaces;
+ b->namespaces = decl;
+ }
+ else if (TREE_CODE (decl) == VAR_DECL && DECL_VIRTUAL_P (decl))
+ {
+ TREE_CHAIN (decl) = b->vtables;
+ b->vtables = decl;
+ }
+ else
+ {
+ /* We build up the list in reverse order, and reverse it later if
+ necessary. */
+ TREE_CHAIN (decl) = b->names;
+ b->names = decl;
+ b->names_size++;
+
+ /* If appropriate, add decl to separate list of statics */
+ if (b->kind == sk_namespace)
+ if ((TREE_CODE (decl) == VAR_DECL && TREE_STATIC (decl))
+ || (TREE_CODE (decl) == FUNCTION_DECL
+ && (!TREE_PUBLIC (decl) || DECL_DECLARED_INLINE_P (decl))))
+ VARRAY_PUSH_TREE (b->static_decls, decl);
+ }
+}
+
+/* Bind DECL to ID in the current_binding_level, assumed to be a local
+ binding level. If PUSH_USING is set in FLAGS, we know that DECL
+ doesn't really belong to this binding level, that it got here
+ through a using-declaration. */
+
+void
+push_local_binding (tree id, tree decl, int flags)
+{
+ struct cp_binding_level *b;
+
+ /* Skip over any local classes. This makes sense if we call
+ push_local_binding with a friend decl of a local class. */
+ b = innermost_nonclass_level ();
+
+ if (lookup_name_current_level (id))
+ {
+ /* Supplement the existing binding. */
+ if (!supplement_binding (IDENTIFIER_BINDING (id), decl))
+ /* It didn't work. Something else must be bound at this
+ level. Do not add DECL to the list of things to pop
+ later. */
+ return;
+ }
+ else
+ /* Create a new binding. */
+ push_binding (id, decl, b);
+
+ if (TREE_CODE (decl) == OVERLOAD || (flags & PUSH_USING))
+ /* We must put the OVERLOAD into a TREE_LIST since the
+ TREE_CHAIN of an OVERLOAD is already used. Similarly for
+ decls that got here through a using-declaration. */
+ decl = build_tree_list (NULL_TREE, decl);
+
+ /* And put DECL on the list of things declared by the current
+ binding level. */
+ add_decl_to_level (decl, b);
+}
+\f
+/* true means unconditionally make a BLOCK for the next level pushed. */
+
+static bool keep_next_level_flag;
+
+static int binding_depth = 0;
+static int is_class_level = 0;
+
+static void
+indent (int depth)
+{
+ int i;
+
+ for (i = 0; i < depth * 2; i++)
+ putc (' ', stderr);
+}
+
+/* Return a string describing the kind of SCOPE we have. */
+static const char *
+cxx_scope_descriptor (cxx_scope *scope)
+{
+ /* The order of this table must match the "scope_kind"
+ enumerators. */
+ static const char* scope_kind_names[] = {
+ "block-scope",
+ "cleanup-scope",
+ "try-scope",
+ "catch-scope",
+ "for-scope",
+ "function-parameter-scope",
+ "class-scope",
+ "namespace-scope",
+ "template-parameter-scope",
+ "template-explicit-spec-scope"
+ };
+ const scope_kind kind = scope->explicit_spec_p
+ ? sk_template_spec : scope->kind;
+
+ return scope_kind_names[kind];
+}
+
+/* Output a debugging information about SCOPE when performning
+ ACTION at LINE. */
+static void
+cxx_scope_debug (cxx_scope *scope, int line, const char *action)
+{
+ const char *desc = cxx_scope_descriptor (scope);
+ if (scope->this_entity)
+ verbatim ("%s %s(%E) %p %d\n", action, desc,
+ scope->this_entity, (void *) scope, line);
+ else
+ verbatim ("%s %s %p %d\n", action, desc, (void *) scope, line);
+}
+
+/* Return the estimated initial size of the hashtable of a NAMESPACE
+ scope. */
+
+static inline size_t
+namespace_scope_ht_size (tree ns)
+{
+ tree name = DECL_NAME (ns);
+
+ return name == std_identifier
+ ? NAMESPACE_STD_HT_SIZE
+ : (name == global_scope_name
+ ? GLOBAL_SCOPE_HT_SIZE
+ : NAMESPACE_ORDINARY_HT_SIZE);
+}
+
+/* A chain of binding_level structures awaiting reuse. */
+
+static GTY((deletable (""))) struct cp_binding_level *free_binding_level;
+
+/* Create a new KIND scope and make it the top of the active scopes stack.
+ ENTITY is the scope of the associated C++ entity (namespace, class,
+ function); it is NULL otherwise. */
+
+cxx_scope *
+begin_scope (scope_kind kind, tree entity)
+{
+ cxx_scope *scope;
+
+ /* Reuse or create a struct for this binding level. */
+ if (!ENABLE_SCOPE_CHECKING && free_binding_level)
+ {
+ scope = free_binding_level;
+ free_binding_level = scope->level_chain;
+ }
+ else
+ scope = ggc_alloc (sizeof (cxx_scope));
+ memset (scope, 0, sizeof (cxx_scope));
+
+ scope->this_entity = entity;
+ scope->more_cleanups_ok = true;
+ switch (kind)
+ {
+ case sk_cleanup:
+ scope->keep = true;
+ break;
+
+ case sk_template_spec:
+ scope->explicit_spec_p = true;
+ kind = sk_template_parms;
+ /* fall through */
+ case sk_template_parms:
+ case sk_block:
+ case sk_try:
+ case sk_catch:
+ case sk_for:
+ case sk_class:
+ case sk_function_parms:
+ scope->keep = keep_next_level_flag;
+ break;
+
+ case sk_namespace:
+ scope->type_decls = binding_table_new (namespace_scope_ht_size (entity));
+ NAMESPACE_LEVEL (entity) = scope;
+ VARRAY_TREE_INIT (scope->static_decls,
+ DECL_NAME (entity) == std_identifier
+ || DECL_NAME (entity) == global_scope_name
+ ? 200 : 10,
+ "Static declarations");
+ break;
+
+ default:
+ /* Should not happen. */
+ my_friendly_assert (false, 20030922);
+ break;
+ }
+ scope->kind = kind;
+
+ /* Add it to the front of currently active scopes stack. */
+ scope->level_chain = current_binding_level;
+ current_binding_level = scope;
+ keep_next_level_flag = false;
+
+ if (ENABLE_SCOPE_CHECKING)
+ {
+ scope->binding_depth = binding_depth;
+ indent (binding_depth);
+ cxx_scope_debug (scope, input_location.line, "push");
+ is_class_level = 0;
+ binding_depth++;
+ }
+
+ return scope;
+}
+
+/* We're about to leave current scope. Pop the top of the stack of
+ currently active scopes. Return the enclosing scope, now active. */
+
+cxx_scope *
+leave_scope (void)
+{
+ cxx_scope *scope = current_binding_level;
+
+ if (scope->kind == sk_namespace && class_binding_level)
+ current_binding_level = class_binding_level;
+
+ /* We cannot leave a scope, if there are none left. */
+ if (NAMESPACE_LEVEL (global_namespace))
+ my_friendly_assert (!global_scope_p (scope), 20030527);
+
+ if (ENABLE_SCOPE_CHECKING)
+ {
+ indent (--binding_depth);
+ cxx_scope_debug (scope, input_location.line, "leave");
+ if (is_class_level != (scope == class_binding_level))
+ {
+ indent (binding_depth);
+ verbatim ("XXX is_class_level != (current_scope == class_scope)\n");
+ }
+ is_class_level = 0;
+ }
+
+ /* Move one nesting level up. */
+ current_binding_level = scope->level_chain;
+
+ /* Namespace-scopes are left most probably temporarily, not completely;
+ they can be reopen later, e.g. in namespace-extension or any name
+ binding acttivity that requires us to resume a namespace. For other
+ scopes, we just make the structure available for reuse. */
+ if (scope->kind != sk_namespace)
+ {
+ scope->level_chain = free_binding_level;
+ if (scope->kind == sk_class)
+ scope->type_decls = NULL;
+ else
+ binding_table_free (scope->type_decls);
+ my_friendly_assert (!ENABLE_SCOPE_CHECKING
+ || scope->binding_depth == binding_depth,
+ 20030529);
+ free_binding_level = scope;
+ }
+
+ /* Find the innermost enclosing class scope, and reset
+ CLASS_BINDING_LEVEL appropriately. */
+ for (scope = current_binding_level;
+ scope && scope->kind != sk_class;
+ scope = scope->level_chain)
+ ;
+ class_binding_level = scope && scope->kind == sk_class ? scope : NULL;
+
+ return current_binding_level;
+}
+
+static void
+resume_scope (struct cp_binding_level* b)
+{
+ /* Resuming binding levels is meant only for namespaces,
+ and those cannot nest into classes. */
+ my_friendly_assert(!class_binding_level, 386);
+ /* Also, resuming a non-directly nested namespace is a no-no. */
+ my_friendly_assert(b->level_chain == current_binding_level, 386);
+ current_binding_level = b;
+ if (ENABLE_SCOPE_CHECKING)
+ {
+ b->binding_depth = binding_depth;
+ indent (binding_depth);
+ cxx_scope_debug (b, input_location.line, "resume");
+ is_class_level = 0;
+ binding_depth++;
+ }
+}
+
+/* Return the innermost binding level that is not for a class scope. */
+
+static cxx_scope *
+innermost_nonclass_level (void)
+{
+ cxx_scope *b;
+
+ b = current_binding_level;
+ while (b->kind == sk_class)
+ b = b->level_chain;
+
+ return b;
+}
+
+/* We're defining an object of type TYPE. If it needs a cleanup, but
+ we're not allowed to add any more objects with cleanups to the current
+ scope, create a new binding level. */
+
+void
+maybe_push_cleanup_level (tree type)
+{
+ if (TYPE_HAS_NONTRIVIAL_DESTRUCTOR (type)
+ && current_binding_level->more_cleanups_ok == 0)
+ {
+ begin_scope (sk_cleanup, NULL);
+ clear_last_expr ();
+ add_scope_stmt (/*begin_p=*/1, /*partial_p=*/1);
+ }
+}
+
+/* Nonzero if we are currently in the global binding level. */
+
+int
+global_bindings_p (void)
+{
+ return global_scope_p (current_binding_level);
+}
+
+/* True if we are currently in a toplevel binding level. This
+ means either the global binding level or a namespace in a toplevel
+ binding level. Since there are no non-toplevel namespace levels,
+ this really means any namespace or template parameter level. We
+ also include a class whose context is toplevel. */
+
+bool
+toplevel_bindings_p (void)
+{
+ struct cp_binding_level *b = innermost_nonclass_level ();
+
+ return b->kind == sk_namespace || b->kind == sk_template_parms;
+}
+
+/* True if this is a namespace scope, or if we are defining a class
+ which is itself at namespace scope, or whose enclosing class is
+ such a class, etc. */
+
+bool
+namespace_bindings_p (void)
+{
+ struct cp_binding_level *b = innermost_nonclass_level ();
+
+ return b->kind == sk_namespace;
+}
+
+/* True if the current level needs to have a BLOCK made. */
+
+bool
+kept_level_p (void)
+{
+ return (current_binding_level->blocks != NULL_TREE
+ || current_binding_level->keep
+ || current_binding_level->kind == sk_cleanup
+ || current_binding_level->names != NULL_TREE
+ || current_binding_level->type_decls != NULL);
+}
+
+/* Returns the kind of the innermost scope. */
+
+scope_kind
+innermost_scope_kind (void)
+{
+ return current_binding_level->kind;
+}
+
+/* Returns true if this scope was created to store template parameters. */
+
+bool
+template_parm_scope_p (void)
+{
+ return innermost_scope_kind () == sk_template_parms;
+}
+
+/* If KEEP is true, make a BLOCK node for the next binding level,
+ unconditionally. Otherwise, use the normal logic to decide whether
+ or not to create a BLOCK. */
+
+void
+keep_next_level (bool keep)
+{
+ keep_next_level_flag = keep;
+}
+
+/* Return the list of declarations of the current level.
+ Note that this list is in reverse order unless/until
+ you nreverse it; and when you do nreverse it, you must
+ store the result back using `storedecls' or you will lose. */
+
+tree
+getdecls (void)
+{
+ return current_binding_level->names;
+}
+
+/* Set the current binding TABLE for type declarations.. This is a
+ temporary workaround of the fact that the data structure classtypes
+ does not currently carry its allocated cxx_scope structure. */
+void
+cxx_remember_type_decls (binding_table table)
+{
+ current_binding_level->type_decls = table;
+}
+
+/* For debugging. */
+static int no_print_functions = 0;
+static int no_print_builtins = 0;
+
+/* Called from print_binding_level through binding_table_foreach to
+ print the content of binding ENTRY. DATA is a pointer to line offset
+ marker. */
+static void
+bt_print_entry (binding_entry entry, void *data)
+{
+ int *p = (int *) data;
+ int len;
+
+ if (entry->name == NULL)
+ len = 3;
+ else if (entry->name == TYPE_IDENTIFIER (entry->type))
+ len = 2;
+ else
+ len = 4;
+ len = 4;
+
+ *p += len;
+
+ if (*p > 5)
+ {
+ fprintf (stderr, "\n\t");
+ *p = len;
+ }
+ if (entry->name == NULL)
+ {
+ print_node_brief (stderr, "<unnamed-typedef", entry->type, 0);
+ fprintf (stderr, ">");
+ }
+ else if (entry->name == TYPE_IDENTIFIER (entry->type))
+ print_node_brief (stderr, "", entry->type, 0);
+ else
+ {
+ print_node_brief (stderr, "<typedef", entry->name, 0);
+ print_node_brief (stderr, "", entry->type, 0);
+ fprintf (stderr, ">");
+ }
+}
+
+void
+print_binding_level (struct cp_binding_level* lvl)
+{
+ tree t;
+ int i = 0, len;
+ fprintf (stderr, " blocks=" HOST_PTR_PRINTF, (void *) lvl->blocks);
+ if (lvl->more_cleanups_ok)
+ fprintf (stderr, " more-cleanups-ok");
+ if (lvl->have_cleanups)
+ fprintf (stderr, " have-cleanups");
+ fprintf (stderr, "\n");
+ if (lvl->names)
+ {
+ fprintf (stderr, " names:\t");
+ /* We can probably fit 3 names to a line? */
+ for (t = lvl->names; t; t = TREE_CHAIN (t))
+ {
+ if (no_print_functions && (TREE_CODE (t) == FUNCTION_DECL))
+ continue;
+ if (no_print_builtins
+ && (TREE_CODE (t) == TYPE_DECL)
+ && (!strcmp (DECL_SOURCE_FILE (t),"<built-in>")))
+ continue;
+
+ /* Function decls tend to have longer names. */
+ if (TREE_CODE (t) == FUNCTION_DECL)
+ len = 3;
+ else
+ len = 2;
+ i += len;
+ if (i > 6)
+ {
+ fprintf (stderr, "\n\t");
+ i = len;
+ }
+ print_node_brief (stderr, "", t, 0);
+ if (t == error_mark_node)
+ break;
+ }
+ if (i)
+ fprintf (stderr, "\n");
+ }
+ if (lvl->type_decls)
+ {
+ fprintf (stderr, " tags:\t");
+ i = 0;
+ binding_table_foreach (lvl->type_decls, bt_print_entry, &i);
+ if (i)
+ fprintf (stderr, "\n");
+ }
+ if (lvl->class_shadowed)
+ {
+ fprintf (stderr, " class-shadowed:");
+ for (t = lvl->class_shadowed; t; t = TREE_CHAIN (t))
+ {
+ fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
+ }
+ fprintf (stderr, "\n");
+ }
+ if (lvl->type_shadowed)
+ {
+ fprintf (stderr, " type-shadowed:");
+ for (t = lvl->type_shadowed; t; t = TREE_CHAIN (t))
+ {
+ fprintf (stderr, " %s ", IDENTIFIER_POINTER (TREE_PURPOSE (t)));
+ }
+ fprintf (stderr, "\n");
+ }
+}
+
+void
+print_other_binding_stack (struct cp_binding_level *stack)
+{
+ struct cp_binding_level *level;
+ for (level = stack; !global_scope_p (level); level = level->level_chain)
+ {
+ fprintf (stderr, "binding level " HOST_PTR_PRINTF "\n", (void *) level);
+ print_binding_level (level);
+ }
+}
+
+void
+print_binding_stack (void)
+{
+ struct cp_binding_level *b;
+ fprintf (stderr, "current_binding_level=" HOST_PTR_PRINTF
+ "\nclass_binding_level=" HOST_PTR_PRINTF
+ "\nNAMESPACE_LEVEL (global_namespace)=" HOST_PTR_PRINTF "\n",
+ (void *) current_binding_level, (void *) class_binding_level,
+ (void *) NAMESPACE_LEVEL (global_namespace));
+ if (class_binding_level)
+ {
+ for (b = class_binding_level; b; b = b->level_chain)
+ if (b == current_binding_level)
+ break;
+ if (b)
+ b = class_binding_level;
+ else
+ b = current_binding_level;
+ }
+ else
+ b = current_binding_level;
+ print_other_binding_stack (b);
+ fprintf (stderr, "global:\n");
+ print_binding_level (NAMESPACE_LEVEL (global_namespace));
+}
\f
+/* Return the type associated with id. */
+
+tree
+identifier_type_value (tree id)
+{
+ timevar_push (TV_NAME_LOOKUP);
+ /* There is no type with that name, anywhere. */
+ if (REAL_IDENTIFIER_TYPE_VALUE (id) == NULL_TREE)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ /* This is not the type marker, but the real thing. */
+ if (REAL_IDENTIFIER_TYPE_VALUE (id) != global_type_node)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, REAL_IDENTIFIER_TYPE_VALUE (id));
+ /* Have to search for it. It must be on the global level, now.
+ Ask lookup_name not to return non-types. */
+ id = lookup_name_real (id, 2, 1, 0, LOOKUP_COMPLAIN);
+ if (id)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, TREE_TYPE (id));
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+}
+
+/* Return the IDENTIFIER_GLOBAL_VALUE of T, for use in common code, since
+ the definition of IDENTIFIER_GLOBAL_VALUE is different for C and C++. */
+
+tree
+identifier_global_value (tree t)
+{
+ return IDENTIFIER_GLOBAL_VALUE (t);
+}
+
+/* Push a definition of struct, union or enum tag named ID. into
+ binding_level B. DECL is a TYPE_DECL for the type. We assume that
+ the tag ID is not already defined. */
+
+static void
+set_identifier_type_value_with_scope (tree id, tree decl, cxx_scope *b)
+{
+ tree type;
+
+ if (b->kind != sk_namespace)
+ {
+ /* Shadow the marker, not the real thing, so that the marker
+ gets restored later. */
+ tree old_type_value = REAL_IDENTIFIER_TYPE_VALUE (id);
+ b->type_shadowed
+ = tree_cons (id, old_type_value, b->type_shadowed);
+ type = decl ? TREE_TYPE (decl) : NULL_TREE;
+ }
+ else
+ {
+ cxx_binding *binding =
+ binding_for_name (NAMESPACE_LEVEL (current_namespace), id);
+ if (decl)
+ {
+ if (binding->value)
+ supplement_binding (binding, decl);
+ else
+ binding->value = decl;
+ }
+ else
+ abort ();
+ /* Store marker instead of real type. */
+ type = global_type_node;
+ }
+ SET_IDENTIFIER_TYPE_VALUE (id, type);
+}
+
+/* As set_identifier_type_value_with_scope, but using
+ current_binding_level. */
+
+void
+set_identifier_type_value (tree id, tree decl)
+{
+ set_identifier_type_value_with_scope (id, decl, current_binding_level);
+}
+
/* Return (from the stack of) the BINDING, if any, establihsed at SCOPE. */
static inline cxx_binding *
IDENTIFIER_NAMESPACE_BINDINGS (name) = result;
return result;
}
-\f
-/* Namespace-scope manipulation routines. */
-/* Return the binding value for name in scope. */
+/* Same as pushdecl, but define X in binding-level LEVEL. We rely on the
+ caller to set DECL_CONTEXT properly. */
tree
-namespace_binding (tree name, tree scope)
+pushdecl_with_scope (tree x, cxx_scope *level)
{
- cxx_binding *binding;
-
- if (scope == NULL)
- scope = global_namespace;
- scope = ORIGINAL_NAMESPACE (scope);
- binding = cxx_scope_find_binding_for_name (NAMESPACE_LEVEL (scope), name);
+ register struct cp_binding_level *b;
+ tree function_decl = current_function_decl;
- return binding ? binding->value : NULL_TREE;
-}
-
-/* Set the binding value for name in scope. */
+ timevar_push (TV_NAME_LOOKUP);
+ current_function_decl = NULL_TREE;
+ if (level->kind == sk_class)
+ {
+ b = class_binding_level;
+ class_binding_level = level;
+ pushdecl_class_level (x);
+ class_binding_level = b;
+ }
+ else
+ {
+ b = current_binding_level;
+ current_binding_level = level;
+ x = pushdecl (x);
+ current_binding_level = b;
+ }
+ current_function_decl = function_decl;
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, x);
+}
+
+/* Return the type that should be used when TYPE's name is preceded
+ by a tag such as 'struct' or 'union', or null if the name cannot
+ be used in this way.
+
+ For example, when processing the third line of:
+
+ struct A;
+ typedef struct A A;
+ struct A;
+
+ lookup of A will find the typedef. Given A's typedef, this function
+ will return the type associated with "struct A". For the tag to be
+ anything other than TYPE, TYPE must be a typedef whose original type
+ has the same name and context as TYPE itself.
+
+ It is not valid for a typedef of an anonymous type to be used with
+ an explicit tag:
+
+ typedef struct { ... } B;
+ struct B;
+
+ Return null for this case. */
+
+static tree
+follow_tag_typedef (tree type)
+{
+ tree original;
+
+ original = original_type (type);
+ if (! TYPE_NAME (original))
+ return NULL_TREE;
+ if (TYPE_IDENTIFIER (original) == TYPE_IDENTIFIER (type)
+ && (CP_DECL_CONTEXT (TYPE_NAME (original))
+ == CP_DECL_CONTEXT (TYPE_NAME (type)))
+ && !(CLASS_TYPE_P (original) && TYPE_WAS_ANONYMOUS (original)))
+ return original;
+ else
+ return NULL_TREE;
+}
+
+/* Given NAME, an IDENTIFIER_NODE,
+ return the structure (or union or enum) definition for that name.
+ Searches binding levels from its SCOPE up to the global level.
+ If THISLEVEL_ONLY is nonzero, searches only the specified context
+ (but skips any sk_cleanup contexts to find one that is
+ meaningful for tags).
+ FORM says which kind of type the caller wants;
+ it is RECORD_TYPE or UNION_TYPE or ENUMERAL_TYPE.
+ If the wrong kind of type is found, and it's not a template, an error is
+ reported. */
+
+tree
+lookup_tag (enum tree_code form, tree name,
+ cxx_scope *binding_level, int thislevel_only)
+{
+ register struct cp_binding_level *level;
+ /* Nonzero if, we should look past a template parameter level, even
+ if THISLEVEL_ONLY. */
+ int allow_template_parms_p = 1;
+ bool type_is_anonymous = ANON_AGGRNAME_P (name);
+
+ timevar_push (TV_NAME_LOOKUP);
+ for (level = binding_level; level; level = level->level_chain)
+ {
+ register tree tail;
+ if (type_is_anonymous && level->type_decls != NULL)
+ {
+ tree type = binding_table_find_anon_type (level->type_decls, name);
+ /* There is no need for error checking here, because
+ anon names are unique throughout the compilation. */
+ if (type != NULL)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, type);
+ }
+ else if (level->kind == sk_namespace)
+ /* Do namespace lookup. */
+ for (tail = current_namespace; 1; tail = CP_DECL_CONTEXT (tail))
+ {
+ cxx_binding *binding =
+ cxx_scope_find_binding_for_name (NAMESPACE_LEVEL (tail), name);
+ tree old;
+
+ /* If we just skipped past a template parameter level,
+ even though THISLEVEL_ONLY, and we find a template
+ class declaration, then we use the _TYPE node for the
+ template. See the example below. */
+ if (thislevel_only && !allow_template_parms_p
+ && binding && binding->value
+ && DECL_CLASS_TEMPLATE_P (binding->value))
+ old = binding->value;
+ else if (binding)
+ old = select_decl (binding, LOOKUP_PREFER_TYPES);
+ else
+ old = NULL_TREE;
+
+ if (old)
+ {
+ /* We've found something at this binding level. If it is
+ a typedef, extract the tag it refers to. Lookup fails
+ if the typedef doesn't refer to a taggable type. */
+ old = TREE_TYPE (old);
+ old = follow_tag_typedef (old);
+ if (!old)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ if (TREE_CODE (old) != form
+ && (form == ENUMERAL_TYPE
+ || TREE_CODE (old) == ENUMERAL_TYPE))
+ {
+ error ("`%#D' redeclared as %C", old, form);
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, old);
+ }
+ if (thislevel_only || tail == global_namespace)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ }
+ else if (level->type_decls != NULL)
+ {
+ binding_entry entry = binding_table_find (level->type_decls, name);
+ if (entry != NULL)
+ {
+ enum tree_code code = TREE_CODE (entry->type);
+
+ if (code != form
+ && (form == ENUMERAL_TYPE || code == ENUMERAL_TYPE))
+ {
+ /* Definition isn't the kind we were looking for. */
+ error ("`%#D' redeclared as %C", entry->type, form);
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, entry->type);
+ }
+ }
+ if (thislevel_only && level->kind != sk_cleanup)
+ {
+ if (level->kind == sk_template_parms && allow_template_parms_p)
+ {
+ /* We must deal with cases like this:
+
+ template <class T> struct S;
+ template <class T> struct S {};
+
+ When looking up `S', for the second declaration, we
+ would like to find the first declaration. But, we
+ are in the pseudo-global level created for the
+ template parameters, rather than the (surrounding)
+ namespace level. Thus, we keep going one more level,
+ even though THISLEVEL_ONLY is nonzero. */
+ allow_template_parms_p = 0;
+ continue;
+ }
+ else
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ }
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+}
+
+/* Given a type, find the tag that was defined for it and return the tag name.
+ Otherwise return 0. However, the value can never be 0
+ in the cases in which this is used.
+
+ C++: If NAME is nonzero, this is the new name to install. This is
+ done when replacing anonymous tags with real tag names. */
+
+tree
+lookup_tag_reverse (tree type, tree name)
+{
+ register struct cp_binding_level *level;
+
+ timevar_push (TV_NAME_LOOKUP);
+ for (level = current_binding_level; level; level = level->level_chain)
+ {
+ binding_entry entry = level->type_decls == NULL
+ ? NULL
+ : binding_table_reverse_maybe_remap (level->type_decls, type, name);
+ if (entry)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, entry->name);
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+}
+\f
+/* Do a pushlevel for class declarations. */
+
+void
+pushlevel_class (void)
+{
+ if (ENABLE_SCOPE_CHECKING)
+ is_class_level = 1;
+
+ class_binding_level = begin_scope (sk_class, current_class_type);
+}
+
+/* ...and a poplevel for class declarations. */
+
+void
+poplevel_class (void)
+{
+ register struct cp_binding_level *level = class_binding_level;
+ tree shadowed;
+
+ timevar_push (TV_NAME_LOOKUP);
+ my_friendly_assert (level != 0, 354);
+
+ /* If we're leaving a toplevel class, don't bother to do the setting
+ of IDENTIFIER_CLASS_VALUE to NULL_TREE, since first of all this slot
+ shouldn't even be used when current_class_type isn't set, and second,
+ if we don't touch it here, we're able to use the cache effect if the
+ next time we're entering a class scope, it is the same class. */
+ if (current_class_depth != 1)
+ {
+ struct cp_binding_level* b;
+
+ /* Clear out our IDENTIFIER_CLASS_VALUEs. */
+ for (shadowed = level->class_shadowed;
+ shadowed;
+ shadowed = TREE_CHAIN (shadowed))
+ IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed)) = NULL_TREE;
+
+ /* Find the next enclosing class, and recreate
+ IDENTIFIER_CLASS_VALUEs appropriate for that class. */
+ b = level->level_chain;
+ while (b && b->kind != sk_class)
+ b = b->level_chain;
+
+ if (b)
+ for (shadowed = b->class_shadowed;
+ shadowed;
+ shadowed = TREE_CHAIN (shadowed))
+ {
+ cxx_binding *binding;
+
+ binding = IDENTIFIER_BINDING (TREE_PURPOSE (shadowed));
+ while (binding && binding->scope != b)
+ binding = binding->previous;
+
+ if (binding)
+ IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (shadowed))
+ = binding->value;
+ }
+ }
+ else
+ /* Remember to save what IDENTIFIER's were bound in this scope so we
+ can recover from cache misses. */
+ {
+ previous_class_type = current_class_type;
+ previous_class_values = class_binding_level->class_shadowed;
+ }
+ for (shadowed = level->type_shadowed;
+ shadowed;
+ shadowed = TREE_CHAIN (shadowed))
+ SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (shadowed), TREE_VALUE (shadowed));
+
+ /* Remove the bindings for all of the class-level declarations. */
+ for (shadowed = level->class_shadowed;
+ shadowed;
+ shadowed = TREE_CHAIN (shadowed))
+ pop_binding (TREE_PURPOSE (shadowed), TREE_TYPE (shadowed));
+
+ /* Now, pop out of the binding level which we created up in the
+ `pushlevel_class' routine. */
+ if (ENABLE_SCOPE_CHECKING)
+ is_class_level = 1;
+
+ leave_scope ();
+ timevar_pop (TV_NAME_LOOKUP);
+}
+
+/* Bind DECL to ID in the class_binding_level. Returns nonzero if the
+ binding was successful. */
+
+int
+push_class_binding (tree id, tree decl)
+{
+ int result = 1;
+ cxx_binding *binding = IDENTIFIER_BINDING (id);
+ tree context;
+
+ timevar_push (TV_NAME_LOOKUP);
+ /* Note that we declared this value so that we can issue an error if
+ this is an invalid redeclaration of a name already used for some
+ other purpose. */
+ note_name_declared_in_class (id, decl);
+
+ if (binding && binding->scope == class_binding_level)
+ /* Supplement the existing binding. */
+ result = supplement_binding (IDENTIFIER_BINDING (id), decl);
+ else
+ /* Create a new binding. */
+ push_binding (id, decl, class_binding_level);
+
+ /* Update the IDENTIFIER_CLASS_VALUE for this ID to be the
+ class-level declaration. Note that we do not use DECL here
+ because of the possibility of the `struct stat' hack; if DECL is
+ a class-name or enum-name we might prefer a field-name, or some
+ such. */
+ IDENTIFIER_CLASS_VALUE (id) = IDENTIFIER_BINDING (id)->value;
+
+ /* If this is a binding from a base class, mark it as such. */
+ binding = IDENTIFIER_BINDING (id);
+ if (binding->value == decl && TREE_CODE (decl) != TREE_LIST)
+ {
+ if (TREE_CODE (decl) == OVERLOAD)
+ context = CP_DECL_CONTEXT (OVL_CURRENT (decl));
+ else
+ {
+ my_friendly_assert (DECL_P (decl), 0);
+ context = context_for_name_lookup (decl);
+ }
+
+ if (is_properly_derived_from (current_class_type, context))
+ INHERITED_VALUE_BINDING_P (binding) = 1;
+ else
+ INHERITED_VALUE_BINDING_P (binding) = 0;
+ }
+ else if (binding->value == decl)
+ /* We only encounter a TREE_LIST when push_class_decls detects an
+ ambiguity. Such an ambiguity can be overridden by a definition
+ in this class. */
+ INHERITED_VALUE_BINDING_P (binding) = 1;
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, result);
+}
+
+/* We are entering the scope of a class. Clear IDENTIFIER_CLASS_VALUE
+ for any names in enclosing classes. */
+
+void
+clear_identifier_class_values (void)
+{
+ tree t;
+
+ if (!class_binding_level)
+ return;
+
+ for (t = class_binding_level->class_shadowed;
+ t;
+ t = TREE_CHAIN (t))
+ IDENTIFIER_CLASS_VALUE (TREE_PURPOSE (t)) = NULL_TREE;
+}
+
+/* Make the declaration of X appear in CLASS scope. */
+
+bool
+pushdecl_class_level (tree x)
+{
+ tree name;
+ bool is_valid = true;
+
+ timevar_push (TV_NAME_LOOKUP);
+ /* Get the name of X. */
+ if (TREE_CODE (x) == OVERLOAD)
+ name = DECL_NAME (get_first_fn (x));
+ else
+ name = DECL_NAME (x);
+
+ if (name)
+ {
+ is_valid = push_class_level_binding (name, x);
+ if (TREE_CODE (x) == TYPE_DECL)
+ set_identifier_type_value (name, x);
+ }
+ else if (ANON_AGGR_TYPE_P (TREE_TYPE (x)))
+ {
+ /* If X is an anonymous aggregate, all of its members are
+ treated as if they were members of the class containing the
+ aggregate, for naming purposes. */
+ tree f;
+
+ for (f = TYPE_FIELDS (TREE_TYPE (x)); f; f = TREE_CHAIN (f))
+ {
+ location_t save_location = input_location;
+ input_location = DECL_SOURCE_LOCATION (f);
+ if (!pushdecl_class_level (f))
+ is_valid = false;
+ input_location = save_location;
+ }
+ }
+ timevar_pop (TV_NAME_LOOKUP);
+
+ return is_valid;
+}
+
+/* Make the declaration(s) of X appear in CLASS scope under the name
+ NAME. Returns true if the binding is valid. */
+
+bool
+push_class_level_binding (tree name, tree x)
+{
+ cxx_binding *binding;
+
+ timevar_push (TV_NAME_LOOKUP);
+ /* The class_binding_level will be NULL if x is a template
+ parameter name in a member template. */
+ if (!class_binding_level)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
+
+ /* Make sure that this new member does not have the same name
+ as a template parameter. */
+ if (TYPE_BEING_DEFINED (current_class_type))
+ check_template_shadow (x);
+
+ /* If this declaration shadows a declaration from an enclosing
+ class, then we will need to restore IDENTIFIER_CLASS_VALUE when
+ we leave this class. Record the shadowed declaration here. */
+ binding = IDENTIFIER_BINDING (name);
+ if (binding && binding->value)
+ {
+ tree bval = binding->value;
+ tree old_decl = NULL_TREE;
+
+ if (INHERITED_VALUE_BINDING_P (binding))
+ {
+ /* If the old binding was from a base class, and was for a
+ tag name, slide it over to make room for the new binding.
+ The old binding is still visible if explicitly qualified
+ with a class-key. */
+ if (TREE_CODE (bval) == TYPE_DECL && DECL_ARTIFICIAL (bval)
+ && !(TREE_CODE (x) == TYPE_DECL && DECL_ARTIFICIAL (x)))
+ {
+ old_decl = binding->type;
+ binding->type = bval;
+ binding->value = NULL_TREE;
+ INHERITED_VALUE_BINDING_P (binding) = 0;
+ }
+ else
+ old_decl = bval;
+ }
+ else if (TREE_CODE (x) == OVERLOAD && is_overloaded_fn (bval))
+ old_decl = bval;
+ else if (TREE_CODE (x) == USING_DECL && TREE_CODE (bval) == USING_DECL)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
+ else if (TREE_CODE (x) == USING_DECL && is_overloaded_fn (bval))
+ old_decl = bval;
+ else if (TREE_CODE (bval) == USING_DECL && is_overloaded_fn (x))
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
+
+ if (old_decl)
+ {
+ tree shadow;
+
+ /* Find the previous binding of name on the class-shadowed
+ list, and update it. */
+ for (shadow = class_binding_level->class_shadowed;
+ shadow;
+ shadow = TREE_CHAIN (shadow))
+ if (TREE_PURPOSE (shadow) == name
+ && TREE_TYPE (shadow) == old_decl)
+ {
+ binding->value = x;
+ INHERITED_VALUE_BINDING_P (binding) = 0;
+ TREE_TYPE (shadow) = x;
+ IDENTIFIER_CLASS_VALUE (name) = x;
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
+ }
+ }
+ }
+
+ /* If we didn't replace an existing binding, put the binding on the
+ stack of bindings for the identifier, and update the shadowed list. */
+ if (push_class_binding (name, x))
+ {
+ class_binding_level->class_shadowed
+ = tree_cons (name, NULL,
+ class_binding_level->class_shadowed);
+ /* Record the value we are binding NAME to so that we can know
+ what to pop later. */
+ TREE_TYPE (class_binding_level->class_shadowed) = x;
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, true);
+ }
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, false);
+}
+
+void
+set_class_shadows (tree shadows)
+{
+ class_binding_level->class_shadowed = shadows;
+}
+\f
+/* Return the binding value for name in scope. */
+
+tree
+namespace_binding (tree name, tree scope)
+{
+ cxx_binding *binding;
+
+ if (scope == NULL)
+ scope = global_namespace;
+ scope = ORIGINAL_NAMESPACE (scope);
+ binding = cxx_scope_find_binding_for_name (NAMESPACE_LEVEL (scope), name);
+
+ return binding ? binding->value : NULL_TREE;
+}
+
+/* Set the binding value for name in scope. */
void
set_namespace_binding (tree name, tree scope, tree val)
timevar_pop (TV_NAME_LOOKUP);
}
+/* Push into the scope of the NAME namespace. If NAME is NULL_TREE, then we
+ select a name that is unique to this compilation unit. */
+
+void
+push_namespace (tree name)
+{
+ tree d = NULL_TREE;
+ int need_new = 1;
+ int implicit_use = 0;
+
+ timevar_push (TV_NAME_LOOKUP);
+
+ /* We should not get here if the global_namespace is not yet constructed
+ nor if NAME designates the global namespace: The global scope is
+ constructed elsewhere. */
+ my_friendly_assert (global_namespace != NULL && name != global_scope_name,
+ 20030531);
+
+ if (!name)
+ {
+ /* The name of anonymous namespace is unique for the translation
+ unit. */
+ if (!anonymous_namespace_name)
+ anonymous_namespace_name = get_file_function_name ('N');
+ name = anonymous_namespace_name;
+ d = IDENTIFIER_NAMESPACE_VALUE (name);
+ if (d)
+ /* Reopening anonymous namespace. */
+ need_new = 0;
+ implicit_use = 1;
+ }
+ else
+ {
+ /* Check whether this is an extended namespace definition. */
+ d = IDENTIFIER_NAMESPACE_VALUE (name);
+ if (d != NULL_TREE && TREE_CODE (d) == NAMESPACE_DECL)
+ {
+ need_new = 0;
+ if (DECL_NAMESPACE_ALIAS (d))
+ {
+ error ("namespace alias `%D' not allowed here, assuming `%D'",
+ d, DECL_NAMESPACE_ALIAS (d));
+ d = DECL_NAMESPACE_ALIAS (d);
+ }
+ }
+ }
+
+ if (need_new)
+ {
+ /* Make a new namespace, binding the name to it. */
+ d = build_lang_decl (NAMESPACE_DECL, name, void_type_node);
+ DECL_CONTEXT (d) = FROB_CONTEXT (current_namespace);
+ d = pushdecl (d);
+ begin_scope (sk_namespace, d);
+ }
+ else
+ resume_scope (NAMESPACE_LEVEL (d));
+
+ if (implicit_use)
+ do_using_directive (d);
+ /* Enter the name space. */
+ current_namespace = d;
+
+ timevar_pop (TV_NAME_LOOKUP);
+}
+
+/* Pop from the scope of the current namespace. */
+
+void
+pop_namespace (void)
+{
+ my_friendly_assert (current_namespace != global_namespace, 20010801);
+ current_namespace = CP_DECL_CONTEXT (current_namespace);
+ /* The binding level is not popped, as it might be re-opened later. */
+ leave_scope ();
+}
+
+/* Push into the scope of the namespace NS, even if it is deeply
+ nested within another namespace. */
+
+void
+push_nested_namespace (tree ns)
+{
+ if (ns == global_namespace)
+ push_to_top_level ();
+ else
+ {
+ push_nested_namespace (CP_DECL_CONTEXT (ns));
+ push_namespace (DECL_NAME (ns));
+ }
+}
+
+/* Pop back from the scope of the namespace NS, which was previously
+ entered with push_nested_namespace. */
+
+void
+pop_nested_namespace (tree ns)
+{
+ timevar_push (TV_NAME_LOOKUP);
+ while (ns != global_namespace)
+ {
+ pop_namespace ();
+ ns = CP_DECL_CONTEXT (ns);
+ }
+
+ pop_from_top_level ();
+ timevar_pop (TV_NAME_LOOKUP);
+}
+
+/* Like pushdecl, only it places X in the current namespace,
+ if appropriate. */
+
+tree
+pushdecl_namespace_level (tree x)
+{
+ register struct cp_binding_level *b = current_binding_level;
+ register tree t;
+
+ timevar_push (TV_NAME_LOOKUP);
+ t = pushdecl_with_scope (x, NAMESPACE_LEVEL (current_namespace));
+
+ /* Now, the type_shadowed stack may screw us. Munge it so it does
+ what we want. */
+ if (TREE_CODE (x) == TYPE_DECL)
+ {
+ tree name = DECL_NAME (x);
+ tree newval;
+ tree *ptr = (tree *)0;
+ for (; !global_scope_p (b); b = b->level_chain)
+ {
+ tree shadowed = b->type_shadowed;
+ for (; shadowed; shadowed = TREE_CHAIN (shadowed))
+ if (TREE_PURPOSE (shadowed) == name)
+ {
+ ptr = &TREE_VALUE (shadowed);
+ /* Can't break out of the loop here because sometimes
+ a binding level will have duplicate bindings for
+ PT names. It's gross, but I haven't time to fix it. */
+ }
+ }
+ newval = TREE_TYPE (x);
+ if (ptr == (tree *)0)
+ {
+ /* @@ This shouldn't be needed. My test case "zstring.cc" trips
+ up here if this is changed to an assertion. --KR */
+ SET_IDENTIFIER_TYPE_VALUE (name, x);
+ }
+ else
+ {
+ *ptr = newval;
+ }
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
+}
+
+/* Return the declarations that are members of the namespace NS. */
+
+tree
+cp_namespace_decls (tree ns)
+{
+ return NAMESPACE_LEVEL (ns)->names;
+}
+
+/* Combine prefer_type and namespaces_only into flags. */
+
+static int
+lookup_flags (int prefer_type, int namespaces_only)
+{
+ if (namespaces_only)
+ return LOOKUP_PREFER_NAMESPACES;
+ if (prefer_type > 1)
+ return LOOKUP_PREFER_TYPES;
+ if (prefer_type > 0)
+ return LOOKUP_PREFER_BOTH;
+ return 0;
+}
+
+/* Given a lookup that returned VAL, use FLAGS to decide if we want to
+ ignore it or not. Subroutine of lookup_name_real. */
+
+static tree
+qualify_lookup (tree val, int flags)
+{
+ if (val == NULL_TREE)
+ return val;
+ if ((flags & LOOKUP_PREFER_NAMESPACES) && TREE_CODE (val) == NAMESPACE_DECL)
+ return val;
+ if ((flags & LOOKUP_PREFER_TYPES)
+ && (TREE_CODE (val) == TYPE_DECL || TREE_CODE (val) == TEMPLATE_DECL))
+ return val;
+ if (flags & (LOOKUP_PREFER_NAMESPACES | LOOKUP_PREFER_TYPES))
+ return NULL_TREE;
+ return val;
+}
+
+/* Look up NAME in the NAMESPACE. */
+
+tree
+lookup_namespace_name (tree namespace, tree name)
+{
+ tree val;
+ tree template_id = NULL_TREE;
+ cxx_binding binding;
+
+ timevar_push (TV_NAME_LOOKUP);
+ my_friendly_assert (TREE_CODE (namespace) == NAMESPACE_DECL, 370);
+
+ if (TREE_CODE (name) == NAMESPACE_DECL)
+ /* This happens for A::B<int> when B is a namespace. */
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, name);
+ else if (TREE_CODE (name) == TEMPLATE_DECL)
+ {
+ /* This happens for A::B where B is a template, and there are no
+ template arguments. */
+ error ("invalid use of `%D'", name);
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+ }
+
+ namespace = ORIGINAL_NAMESPACE (namespace);
+
+ if (TREE_CODE (name) == TEMPLATE_ID_EXPR)
+ {
+ template_id = name;
+ name = TREE_OPERAND (name, 0);
+ if (TREE_CODE (name) == OVERLOAD)
+ name = DECL_NAME (OVL_CURRENT (name));
+ else if (DECL_P (name))
+ name = DECL_NAME (name);
+ }
+
+ my_friendly_assert (TREE_CODE (name) == IDENTIFIER_NODE, 373);
+
+ cxx_binding_clear (&binding);
+ if (!qualified_lookup_using_namespace (name, namespace, &binding, 0))
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+
+ if (binding.value)
+ {
+ val = binding.value;
+
+ if (template_id)
+ {
+ if (DECL_CLASS_TEMPLATE_P (val))
+ val = lookup_template_class (val,
+ TREE_OPERAND (template_id, 1),
+ /*in_decl=*/NULL_TREE,
+ /*context=*/NULL_TREE,
+ /*entering_scope=*/0,
+ tf_error | tf_warning);
+ else if (DECL_FUNCTION_TEMPLATE_P (val)
+ || TREE_CODE (val) == OVERLOAD)
+ val = lookup_template_function (val,
+ TREE_OPERAND (template_id, 1));
+ else
+ {
+ error ("`%D::%D' is not a template",
+ namespace, name);
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+ }
+ }
+
+ /* If we have a single function from a using decl, pull it out. */
+ if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
+ val = OVL_FUNCTION (val);
+
+ /* Ignore built-in functions that haven't been prototyped yet. */
+ if (!val || !DECL_P(val)
+ || !DECL_LANG_SPECIFIC(val)
+ || !DECL_ANTICIPATED (val))
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
+ }
+
+ error ("`%D' undeclared in namespace `%D'", name, namespace);
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+}
+
+/* Select the right _DECL from multiple choices. */
+
+static tree
+select_decl (cxx_binding *binding, int flags)
+{
+ tree val;
+ val = binding->value;
+
+ timevar_push (TV_NAME_LOOKUP);
+ if (LOOKUP_NAMESPACES_ONLY (flags))
+ {
+ /* We are not interested in types. */
+ if (val && TREE_CODE (val) == NAMESPACE_DECL)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ }
+
+ /* If looking for a type, or if there is no non-type binding, select
+ the value binding. */
+ if (binding->type && (!val || (flags & LOOKUP_PREFER_TYPES)))
+ val = binding->type;
+ /* Don't return non-types if we really prefer types. */
+ else if (val && LOOKUP_TYPES_ONLY (flags) && TREE_CODE (val) != TYPE_DECL
+ && (TREE_CODE (val) != TEMPLATE_DECL
+ || !DECL_CLASS_TEMPLATE_P (val)))
+ val = NULL_TREE;
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
+}
+
+/* Unscoped lookup of a global: iterate over current namespaces,
+ considering using-directives. If SPACESP is non-NULL, store a list
+ of the namespaces we've considered in it. */
+
+tree
+unqualified_namespace_lookup (tree name, int flags, tree* spacesp)
+{
+ tree initial = current_decl_namespace ();
+ tree scope = initial;
+ tree siter;
+ struct cp_binding_level *level;
+ tree val = NULL_TREE;
+ cxx_binding binding;
+
+ timevar_push (TV_NAME_LOOKUP);
+ cxx_binding_clear (&binding);
+ if (spacesp)
+ *spacesp = NULL_TREE;
+
+ for (; !val; scope = CP_DECL_CONTEXT (scope))
+ {
+ cxx_binding *b =
+ cxx_scope_find_binding_for_name (NAMESPACE_LEVEL (scope), name);
+ if (spacesp)
+ *spacesp = tree_cons (scope, NULL_TREE, *spacesp);
+
+ /* Ignore anticipated built-in functions. */
+ if (b && b->value && DECL_P (b->value)
+ && DECL_LANG_SPECIFIC (b->value) && DECL_ANTICIPATED (b->value))
+ /* Keep binding cleared. */;
+ else if (b)
+ {
+ /* Initialize binding for this context. */
+ binding.value = b->value;
+ binding.type = b->type;
+ }
+
+ /* Add all _DECLs seen through local using-directives. */
+ for (level = current_binding_level;
+ level->kind != sk_namespace;
+ level = level->level_chain)
+ if (!lookup_using_namespace (name, &binding, level->using_directives,
+ scope, flags, spacesp))
+ /* Give up because of error. */
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+
+ /* Add all _DECLs seen through global using-directives. */
+ /* XXX local and global using lists should work equally. */
+ siter = initial;
+ while (1)
+ {
+ if (!lookup_using_namespace (name, &binding,
+ DECL_NAMESPACE_USING (siter),
+ scope, flags, spacesp))
+ /* Give up because of error. */
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, error_mark_node);
+ if (siter == scope) break;
+ siter = CP_DECL_CONTEXT (siter);
+ }
+
+ val = select_decl (&binding, flags);
+ if (scope == global_namespace)
+ break;
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
+}
+
+/* Look up NAME (an IDENTIFIER_NODE) in SCOPE (either a NAMESPACE_DECL
+ or a class TYPE). If IS_TYPE_P is TRUE, then ignore non-type
+ bindings.
+
+ Returns a DECL (or OVERLOAD, or BASELINK) representing the
+ declaration found. If no suitable declaration can be found,
+ ERROR_MARK_NODE is returned. Iif COMPLAIN is true and SCOPE is
+ neither a class-type nor a namespace a diagnostic is issued. */
+
+tree
+lookup_qualified_name (tree scope, tree name, bool is_type_p, bool complain)
+{
+ int flags = 0;
+
+ if (TREE_CODE (scope) == NAMESPACE_DECL)
+ {
+ cxx_binding binding;
+
+ cxx_binding_clear (&binding);
+ flags |= LOOKUP_COMPLAIN;
+ if (is_type_p)
+ flags |= LOOKUP_PREFER_TYPES;
+ if (qualified_lookup_using_namespace (name, scope, &binding,
+ flags))
+ return select_decl (&binding, flags);
+ }
+ else if (is_aggr_type (scope, complain))
+ {
+ tree t;
+ t = lookup_member (scope, name, 0, is_type_p);
+ if (t)
+ return t;
+ }
+
+ return error_mark_node;
+}
+
+/* Look up NAME in the current binding level and its superiors in the
+ namespace of variables, functions and typedefs. Return a ..._DECL
+ node of some kind representing its definition if there is only one
+ such declaration, or return a TREE_LIST with all the overloaded
+ definitions if there are many, or return 0 if it is undefined.
+
+ If PREFER_TYPE is > 0, we prefer TYPE_DECLs or namespaces.
+ If PREFER_TYPE is > 1, we reject non-type decls (e.g. namespaces).
+ Otherwise we prefer non-TYPE_DECLs.
+
+ If NONCLASS is nonzero, we don't look for the NAME in class scope,
+ using IDENTIFIER_CLASS_VALUE. */
+
+tree
+lookup_name_real (tree name, int prefer_type, int nonclass,
+ int namespaces_only, int flags)
+{
+ cxx_binding *iter;
+ tree val = NULL_TREE;
+
+ timevar_push (TV_NAME_LOOKUP);
+ /* Conversion operators are handled specially because ordinary
+ unqualified name lookup will not find template conversion
+ operators. */
+ if (IDENTIFIER_TYPENAME_P (name))
+ {
+ struct cp_binding_level *level;
+
+ for (level = current_binding_level;
+ level && level->kind != sk_namespace;
+ level = level->level_chain)
+ {
+ tree class_type;
+ tree operators;
+
+ /* A conversion operator can only be declared in a class
+ scope. */
+ if (level->kind != sk_class)
+ continue;
+
+ /* Lookup the conversion operator in the class. */
+ class_type = level->this_entity;
+ operators = lookup_fnfields (class_type, name, /*protect=*/0);
+ if (operators)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, operators);
+ }
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+ }
+
+ flags |= lookup_flags (prefer_type, namespaces_only);
+
+ /* First, look in non-namespace scopes. */
+
+ if (current_class_type == NULL_TREE)
+ nonclass = 1;
+
+ for (iter = IDENTIFIER_BINDING (name); iter; iter = iter->previous)
+ {
+ tree binding;
+
+ if (!LOCAL_BINDING_P (iter) && nonclass)
+ /* We're not looking for class-scoped bindings, so keep going. */
+ continue;
+
+ /* If this is the kind of thing we're looking for, we're done. */
+ if (qualify_lookup (iter->value, flags))
+ binding = iter->value;
+ else if ((flags & LOOKUP_PREFER_TYPES)
+ && qualify_lookup (iter->type, flags))
+ binding = iter->type;
+ else
+ binding = NULL_TREE;
+
+ if (binding)
+ {
+ val = binding;
+ break;
+ }
+ }
+
+ /* Now lookup in namespace scopes. */
+ if (!val)
+ {
+ tree t = unqualified_namespace_lookup (name, flags, 0);
+ if (t)
+ val = t;
+ }
+
+ if (val)
+ {
+ /* If we have a single function from a using decl, pull it out. */
+ if (TREE_CODE (val) == OVERLOAD && ! really_overloaded_fn (val))
+ val = OVL_FUNCTION (val);
+ }
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, val);
+}
+
+tree
+lookup_name_nonclass (tree name)
+{
+ return lookup_name_real (name, 0, 1, 0, LOOKUP_COMPLAIN);
+}
+
+tree
+lookup_function_nonclass (tree name, tree args)
+{
+ return lookup_arg_dependent (name, lookup_name_nonclass (name), args);
+}
+
+tree
+lookup_name (tree name, int prefer_type)
+{
+ return lookup_name_real (name, prefer_type, 0, 0, LOOKUP_COMPLAIN);
+}
+
+/* Similar to `lookup_name' but look only in the innermost non-class
+ binding level. */
+
+tree
+lookup_name_current_level (tree name)
+{
+ struct cp_binding_level *b;
+ tree t = NULL_TREE;
+
+ timevar_push (TV_NAME_LOOKUP);
+ b = innermost_nonclass_level ();
+
+ if (b->kind == sk_namespace)
+ {
+ t = IDENTIFIER_NAMESPACE_VALUE (name);
+
+ /* extern "C" function() */
+ if (t != NULL_TREE && TREE_CODE (t) == TREE_LIST)
+ t = TREE_VALUE (t);
+ }
+ else if (IDENTIFIER_BINDING (name)
+ && LOCAL_BINDING_P (IDENTIFIER_BINDING (name)))
+ {
+ while (1)
+ {
+ if (IDENTIFIER_BINDING (name)->scope == b)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, IDENTIFIER_VALUE (name));
+
+ if (b->kind == sk_cleanup)
+ b = b->level_chain;
+ else
+ break;
+ }
+ }
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
+}
+
+/* Like lookup_name_current_level, but for types. */
+
+tree
+lookup_type_current_level (tree name)
+{
+ register tree t = NULL_TREE;
+
+ timevar_push (TV_NAME_LOOKUP);
+ my_friendly_assert (current_binding_level->kind != sk_namespace,
+ 980716);
+
+ if (REAL_IDENTIFIER_TYPE_VALUE (name) != NULL_TREE
+ && REAL_IDENTIFIER_TYPE_VALUE (name) != global_type_node)
+ {
+ struct cp_binding_level *b = current_binding_level;
+ while (1)
+ {
+ if (purpose_member (name, b->type_shadowed))
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP,
+ REAL_IDENTIFIER_TYPE_VALUE (name));
+ if (b->kind == sk_cleanup)
+ b = b->level_chain;
+ else
+ break;
+ }
+ }
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, t);
+}
+
+/* Add namespace to using_directives. Return NULL_TREE if nothing was
+ changed (i.e. there was already a directive), or the fresh
+ TREE_LIST otherwise. */
+
+tree
+push_using_directive (tree used)
+{
+ tree ud = current_binding_level->using_directives;
+ tree iter, ancestor;
+
+ timevar_push (TV_NAME_LOOKUP);
+ /* Check if we already have this. */
+ if (purpose_member (used, ud) != NULL_TREE)
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, NULL_TREE);
+
+ ancestor = namespace_ancestor (current_decl_namespace (), used);
+ ud = current_binding_level->using_directives;
+ ud = tree_cons (used, ancestor, ud);
+ current_binding_level->using_directives = ud;
+
+ /* Recursively add all namespaces used. */
+ for (iter = DECL_NAMESPACE_USING (used); iter; iter = TREE_CHAIN (iter))
+ push_using_directive (TREE_PURPOSE (iter));
+
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, ud);
+}
+
+/* The type TYPE is being declared. If it is a class template, or a
+ specialization of a class template, do any processing required and
+ perform error-checking. If IS_FRIEND is nonzero, this TYPE is
+ being declared a friend. B is the binding level at which this TYPE
+ should be bound.
+
+ Returns the TYPE_DECL for TYPE, which may have been altered by this
+ processing. */
+
+static tree
+maybe_process_template_type_declaration (tree type, int globalize,
+ cxx_scope *b)
+{
+ tree decl = TYPE_NAME (type);
+
+ if (processing_template_parmlist)
+ /* You can't declare a new template type in a template parameter
+ list. But, you can declare a non-template type:
+
+ template <class A*> struct S;
+
+ is a forward-declaration of `A'. */
+ ;
+ else
+ {
+ maybe_check_template_type (type);
+
+ my_friendly_assert (IS_AGGR_TYPE (type)
+ || TREE_CODE (type) == ENUMERAL_TYPE, 0);
+
+
+ if (processing_template_decl)
+ {
+ /* This may change after the call to
+ push_template_decl_real, but we want the original value. */
+ tree name = DECL_NAME (decl);
+
+ decl = push_template_decl_real (decl, globalize);
+ /* If the current binding level is the binding level for the
+ template parameters (see the comment in
+ begin_template_parm_list) and the enclosing level is a class
+ scope, and we're not looking at a friend, push the
+ declaration of the member class into the class scope. In the
+ friend case, push_template_decl will already have put the
+ friend into global scope, if appropriate. */
+ if (TREE_CODE (type) != ENUMERAL_TYPE
+ && !globalize && b->kind == sk_template_parms
+ && b->level_chain->kind == sk_class)
+ {
+ finish_member_declaration (CLASSTYPE_TI_TEMPLATE (type));
+ /* Put this UDT in the table of UDTs for the class, since
+ that won't happen below because B is not the class
+ binding level, but is instead the pseudo-global level. */
+ if (b->level_chain->type_decls == NULL)
+ b->level_chain->type_decls =
+ binding_table_new (SCOPE_DEFAULT_HT_SIZE);
+ binding_table_insert (b->level_chain->type_decls, name, type);
+ if (!COMPLETE_TYPE_P (current_class_type))
+ {
+ maybe_add_class_template_decl_list (current_class_type,
+ type, /*friend_p=*/0);
+ CLASSTYPE_NESTED_UTDS (current_class_type) =
+ b->level_chain->type_decls;
+ }
+ }
+ }
+ }
+
+ return decl;
+}
+
+/* Push a tag name NAME for struct/class/union/enum type TYPE.
+ Normally put it into the inner-most non-sk_cleanup scope,
+ but if GLOBALIZE is true, put it in the inner-most non-class scope.
+ The latter is needed for implicit declarations. */
+
+void
+pushtag (tree name, tree type, int globalize)
+{
+ register struct cp_binding_level *b;
+
+ timevar_push (TV_NAME_LOOKUP);
+ b = current_binding_level;
+ while (b->kind == sk_cleanup
+ || (b->kind == sk_class
+ && (globalize
+ /* We may be defining a new type in the initializer
+ of a static member variable. We allow this when
+ not pedantic, and it is particularly useful for
+ type punning via an anonymous union. */
+ || COMPLETE_TYPE_P (b->this_entity))))
+ b = b->level_chain;
+
+ if (b->type_decls == NULL)
+ b->type_decls = binding_table_new (SCOPE_DEFAULT_HT_SIZE);
+ binding_table_insert (b->type_decls, name, type);
+
+ if (name)
+ {
+ /* Do C++ gratuitous typedefing. */
+ if (IDENTIFIER_TYPE_VALUE (name) != type)
+ {
+ register tree d = NULL_TREE;
+ int in_class = 0;
+ tree context = TYPE_CONTEXT (type);
+
+ if (! context)
+ {
+ tree cs = current_scope ();
+
+ if (! globalize)
+ context = cs;
+ else if (cs != NULL_TREE && TYPE_P (cs))
+ /* When declaring a friend class of a local class, we want
+ to inject the newly named class into the scope
+ containing the local class, not the namespace scope. */
+ context = decl_function_context (get_type_decl (cs));
+ }
+ if (!context)
+ context = current_namespace;
+
+ if (b->kind == sk_class
+ || (b->kind == sk_template_parms
+ && b->level_chain->kind == sk_class))
+ in_class = 1;
+
+ if (current_lang_name == lang_name_java)
+ TYPE_FOR_JAVA (type) = 1;
+
+ d = create_implicit_typedef (name, type);
+ DECL_CONTEXT (d) = FROB_CONTEXT (context);
+ if (! in_class)
+ set_identifier_type_value_with_scope (name, d, b);
+
+ d = maybe_process_template_type_declaration (type,
+ globalize, b);
+
+ if (b->kind == sk_class)
+ {
+ if (!PROCESSING_REAL_TEMPLATE_DECL_P ())
+ /* Put this TYPE_DECL on the TYPE_FIELDS list for the
+ class. But if it's a member template class, we
+ want the TEMPLATE_DECL, not the TYPE_DECL, so this
+ is done later. */
+ finish_member_declaration (d);
+ else
+ pushdecl_class_level (d);
+ }
+ else
+ d = pushdecl_with_scope (d, b);
+
+ /* FIXME what if it gets a name from typedef? */
+ if (ANON_AGGRNAME_P (name))
+ DECL_IGNORED_P (d) = 1;
+
+ TYPE_CONTEXT (type) = DECL_CONTEXT (d);
+
+ /* If this is a local class, keep track of it. We need this
+ information for name-mangling, and so that it is possible to find
+ all function definitions in a translation unit in a convenient
+ way. (It's otherwise tricky to find a member function definition
+ it's only pointed to from within a local class.) */
+ if (TYPE_CONTEXT (type)
+ && TREE_CODE (TYPE_CONTEXT (type)) == FUNCTION_DECL
+ && !processing_template_decl)
+ VARRAY_PUSH_TREE (local_classes, type);
+ }
+ if (b->kind == sk_class
+ && !COMPLETE_TYPE_P (current_class_type))
+ {
+ maybe_add_class_template_decl_list (current_class_type,
+ type, /*friend_p=*/0);
+ CLASSTYPE_NESTED_UTDS (current_class_type) = b->type_decls;
+ }
+ }
+
+ if (TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
+ /* Use the canonical TYPE_DECL for this node. */
+ TYPE_STUB_DECL (type) = TYPE_NAME (type);
+ else
+ {
+ /* Create a fake NULL-named TYPE_DECL node whose TREE_TYPE
+ will be the tagged type we just added to the current
+ binding level. This fake NULL-named TYPE_DECL node helps
+ dwarfout.c to know when it needs to output a
+ representation of a tagged type, and it also gives us a
+ convenient place to record the "scope start" address for
+ the tagged type. */
+
+ tree d = build_decl (TYPE_DECL, NULL_TREE, type);
+ TYPE_STUB_DECL (type) = pushdecl_with_scope (d, b);
+ }
+ timevar_pop (TV_NAME_LOOKUP);
+}
+\f
+/* Allocate storage for saving a C++ binding. */
+#define cxx_saved_binding_make() \
+ (ggc_alloc (sizeof (cxx_saved_binding)))
+
+struct cxx_saved_binding GTY(())
+{
+ /* Link that chains saved C++ bindings for a given name into a stack. */
+ cxx_saved_binding *previous;
+ /* The name of the current binding. */
+ tree identifier;
+ /* The binding we're saving. */
+ cxx_binding *binding;
+ tree class_value;
+ tree real_type_value;
+};
+
+/* Subroutines for reverting temporarily to top-level for instantiation
+ of templates and such. We actually need to clear out the class- and
+ local-value slots of all identifiers, so that only the global values
+ are at all visible. Simply setting current_binding_level to the global
+ scope isn't enough, because more binding levels may be pushed. */
+struct saved_scope *scope_chain;
+
+static cxx_saved_binding *
+store_bindings (tree names, cxx_saved_binding *old_bindings)
+{
+ tree t;
+ cxx_saved_binding *search_bindings = old_bindings;
+
+ timevar_push (TV_NAME_LOOKUP);
+ for (t = names; t; t = TREE_CHAIN (t))
+ {
+ tree id;
+ cxx_saved_binding *saved;
+ cxx_saved_binding *t1;
+
+ if (TREE_CODE (t) == TREE_LIST)
+ id = TREE_PURPOSE (t);
+ else
+ id = DECL_NAME (t);
+
+ if (!id
+ /* Note that we may have an IDENTIFIER_CLASS_VALUE even when
+ we have no IDENTIFIER_BINDING if we have left the class
+ scope, but cached the class-level declarations. */
+ || !(IDENTIFIER_BINDING (id) || IDENTIFIER_CLASS_VALUE (id)))
+ continue;
+
+ for (t1 = search_bindings; t1; t1 = t1->previous)
+ if (t1->identifier == id)
+ goto skip_it;
+
+ my_friendly_assert (TREE_CODE (id) == IDENTIFIER_NODE, 135);
+ saved = cxx_saved_binding_make ();
+ saved->previous = old_bindings;
+ saved->identifier = id;
+ saved->binding = IDENTIFIER_BINDING (id);
+ saved->class_value = IDENTIFIER_CLASS_VALUE (id);;
+ saved->real_type_value = REAL_IDENTIFIER_TYPE_VALUE (id);
+ IDENTIFIER_BINDING (id) = NULL;
+ IDENTIFIER_CLASS_VALUE (id) = NULL_TREE;
+ old_bindings = saved;
+ skip_it:
+ ;
+ }
+ POP_TIMEVAR_AND_RETURN (TV_NAME_LOOKUP, old_bindings);
+}
+
+void
+maybe_push_to_top_level (int pseudo)
+{
+ struct saved_scope *s;
+ struct cp_binding_level *b;
+ cxx_saved_binding *old_bindings;
+ int need_pop;
+
+ timevar_push (TV_NAME_LOOKUP);
+ s = ggc_alloc_cleared (sizeof (struct saved_scope));
+
+ b = scope_chain ? current_binding_level : 0;
+
+ /* If we're in the middle of some function, save our state. */
+ if (cfun)
+ {
+ need_pop = 1;
+ push_function_context_to (NULL_TREE);
+ }
+ else
+ need_pop = 0;
+
+ old_bindings = NULL;
+ if (scope_chain && previous_class_type)
+ old_bindings = store_bindings (previous_class_values, old_bindings);
+
+ /* Have to include the global scope, because class-scope decls
+ aren't listed anywhere useful. */
+ for (; b; b = b->level_chain)
+ {
+ tree t;
+
+ /* Template IDs are inserted into the global level. If they were
+ inserted into namespace level, finish_file wouldn't find them
+ when doing pending instantiations. Therefore, don't stop at
+ namespace level, but continue until :: . */
+ if (global_scope_p (b) || (pseudo && b->kind == sk_template_parms))
+ break;
+
+ old_bindings = store_bindings (b->names, old_bindings);
+ /* We also need to check class_shadowed to save class-level type
+ bindings, since pushclass doesn't fill in b->names. */
+ if (b->kind == sk_class)
+ old_bindings = store_bindings (b->class_shadowed, old_bindings);
+
+ /* Unwind type-value slots back to top level. */
+ for (t = b->type_shadowed; t; t = TREE_CHAIN (t))
+ SET_IDENTIFIER_TYPE_VALUE (TREE_PURPOSE (t), TREE_VALUE (t));
+ }
+ s->prev = scope_chain;
+ s->old_bindings = old_bindings;
+ s->bindings = b;
+ s->need_pop_function_context = need_pop;
+ s->function_decl = current_function_decl;
+ s->last_parms = last_function_parms;
+
+ scope_chain = s;
+ current_function_decl = NULL_TREE;
+ VARRAY_TREE_INIT (current_lang_base, 10, "current_lang_base");
+ current_lang_name = lang_name_cplusplus;
+ current_namespace = global_namespace;
+ timevar_pop (TV_NAME_LOOKUP);
+}
+
+void
+push_to_top_level (void)
+{
+ maybe_push_to_top_level (0);
+}
+
+void
+pop_from_top_level (void)
+{
+ struct saved_scope *s = scope_chain;
+ cxx_saved_binding *saved;
+
+ timevar_push (TV_NAME_LOOKUP);
+ /* Clear out class-level bindings cache. */
+ if (previous_class_type)
+ invalidate_class_lookup_cache ();
+
+ current_lang_base = 0;
+
+ scope_chain = s->prev;
+ for (saved = s->old_bindings; saved; saved = saved->previous)
+ {
+ tree id = saved->identifier;
+
+ IDENTIFIER_BINDING (id) = saved->binding;
+ IDENTIFIER_CLASS_VALUE (id) = saved->class_value;
+ SET_IDENTIFIER_TYPE_VALUE (id, saved->real_type_value);
+ }
+
+ /* If we were in the middle of compiling a function, restore our
+ state. */
+ if (s->need_pop_function_context)
+ pop_function_context_from (NULL_TREE);
+ current_function_decl = s->function_decl;
+ last_function_parms = s->last_parms;
+ timevar_pop (TV_NAME_LOOKUP);
+}
+
+/* Pop off extraneous binding levels left over due to syntax errors.
+
+ We don't pop past namespaces, as they might be valid. */
+
+void
+pop_everything (void)
+{
+ if (ENABLE_SCOPE_CHECKING)
+ verbatim ("XXX entering pop_everything ()\n");
+ while (!toplevel_bindings_p ())
+ {
+ if (current_binding_level->kind == sk_class)
+ pop_nested_class ();
+ else
+ poplevel (0, 0, 0);
+ }
+ if (ENABLE_SCOPE_CHECKING)
+ verbatim ("XXX leaving pop_everything ()\n");
+}
+
#include "gt-cp-name-lookup.h"
#define NAMESPACE_STD_HT_SIZE (1 << 8)
#define GLOBAL_SCOPE_HT_SIZE (1 << 8)
-extern binding_table binding_table_new (size_t);
-extern void binding_table_free (binding_table);
-extern void binding_table_insert (binding_table, tree, tree);
-extern tree binding_table_find_anon_type (binding_table, tree);
-extern binding_entry binding_table_reverse_maybe_remap (binding_table,
- tree, tree);
extern void binding_table_remove_anonymous_types (binding_table);
extern void binding_table_foreach (binding_table, bt_foreach_proc, void *);
extern binding_entry binding_table_find (binding_table, tree);
unsigned is_local : 1;
};
-extern cxx_binding *cxx_binding_make (tree, tree);
-extern void cxx_binding_free (cxx_binding *);
-extern bool supplement_binding (cxx_binding *, tree);
+extern tree identifier_type_value (tree);
+extern void set_identifier_type_value (tree, tree);
+extern void pop_binding (tree, tree);
+extern void clear_identifier_class_values (void);
\f
/* The kinds of scopes we recognize. */
typedef enum scope_kind {
/* The tree node representing the global scope. */
extern GTY(()) tree global_namespace;
+extern GTY(()) tree global_scope_name;
+
+/* Indicates that there is a type value in some namespace, although
+ that is not necessarily in scope at the moment. */
+
+extern GTY(()) tree global_type_node;
/* True if SCOPE designates the global scope binding contour. */
#define global_scope_p(SCOPE) \
((SCOPE) == NAMESPACE_LEVEL (global_namespace))
+extern cxx_scope *leave_scope (void);
+extern bool kept_level_p (void);
+extern int global_bindings_p (void);
+extern bool toplevel_bindings_p (void);
+extern bool namespace_bindings_p (void);
+extern bool template_parm_scope_p (void);
+extern scope_kind innermost_scope_kind (void);
+extern cxx_scope *begin_scope (scope_kind, tree);
+extern void print_binding_stack (void);
+extern void print_binding_level (cxx_scope *);
+extern void push_to_top_level (void);
+extern void pop_from_top_level (void);
+extern void maybe_push_to_top_level (int);
+extern void pop_everything (void);
+extern void keep_next_level (bool);
+\f
+extern void push_namespace (tree);
+extern void pop_namespace (void);
+extern void push_nested_namespace (tree);
+extern void pop_nested_namespace (tree);
+extern tree push_using_directive (tree);
+extern void pushlevel_class (void);
+extern void poplevel_class (void);
extern cxx_binding *cxx_scope_find_binding_for_name (cxx_scope *, tree);
extern cxx_binding *binding_for_name (cxx_scope *, tree);
-\f
+extern tree pushdecl_with_scope (tree, cxx_scope *);
+extern tree lookup_tag (enum tree_code, tree, cxx_scope *, int);
+extern tree lookup_tag_reverse (tree, tree);
+extern tree lookup_name (tree, int);
+extern tree lookup_name_real (tree, int, int, int, int);
+extern tree lookup_name_current_level (tree);
+extern tree lookup_type_current_level (tree);
extern tree namespace_binding (tree, tree);
+extern void add_decl_to_level (tree, cxx_scope *);
extern void set_namespace_binding (tree, tree, tree);
+extern tree lookup_namespace_name (tree, tree);
+extern tree unqualified_namespace_lookup (tree, int, tree *);
+extern tree lookup_qualified_name (tree, tree, bool, bool);
+extern tree lookup_name_nonclass (tree);
+extern tree lookup_function_nonclass (tree, tree);
+extern void push_local_binding (tree, tree, int);
+extern int push_class_binding (tree, tree);
+extern bool pushdecl_class_level (tree);
+extern tree pushdecl_namespace_level (tree);
+extern bool push_class_level_binding (tree, tree);
+extern void storetags (tree);
+extern tree getdecls (void);
+extern tree cp_namespace_decls (tree);
+extern void set_class_shadows (tree);
/* Set *DECL to the (non-hidden) declaration for ID at global scope,
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