2003-10-03 Gabriel Dos Reis <gdr@integrable-solutions.net>
+ * decl.c (struct cp_binding_level): Move to name-lookup.h
+ (current_binding_level): Likewise.
+ (class_binding_level): Likewise.
+ * cp-tree.h (enum scope_kind): Likewise.
+
+2003-10-03 Gabriel Dos Reis <gdr@integrable-solutions.net>
+
* name-lookup.c (binding_entry_free): Nullify name and type
fields.
clk_packed = 8 /* An lvalue for a packed field. */
} cp_lvalue_kind;
-/* The kinds of scopes we recognize. */
-typedef enum scope_kind {
- sk_block = 0, /* An ordinary block scope. This enumerator must
- have the value zero because "cp_binding_level"
- is initialized by using "memset" to set the
- contents to zero, and the default scope kind
- is "sk_block". */
- sk_cleanup, /* A scope for (pseudo-)scope for cleanup. It is
- peusdo in that it is transparent to name lookup
- activities. */
- sk_try, /* A try-block. */
- sk_catch, /* A catch-block. */
- sk_for, /* The scope of the variable declared in a
- for-init-statement. */
- sk_function_parms, /* The scope containing function parameters. */
- sk_class, /* The scope containing the members of a class. */
- sk_namespace, /* The scope containing the members of a
- namespace, including the global scope. */
- sk_template_parms, /* A scope for template parameters. */
- sk_template_spec /* Like sk_template_parms, but for an explicit
- specialization. Since, by definition, an
- explicit specialization is introduced by
- "template <>", this scope is always empty. */
-} scope_kind;
-
/* Various kinds of template specialization, instantiation, etc. */
typedef enum tmpl_spec_kind {
tsk_none, /* Not a template at all. */
bool have_extern_spec;
\f
-/* For each binding contour we allocate a binding_level structure
- which records the names defined in that contour.
- Contours include:
- 0) the global one
- 1) one for each function definition,
- where internal declarations of the parameters appear.
- 2) one for each compound statement,
- to record its declarations.
-
- The current meaning of a name can be found by searching the levels
- from the current one out to the global one.
-
- Off to the side, may be the class_binding_level. This exists only
- to catch class-local declarations. It is otherwise nonexistent.
-
- Also there may be binding levels that catch cleanups that must be
- run when exceptions occur. Thus, to see whether a name is bound in
- the current scope, it is not enough to look in the
- CURRENT_BINDING_LEVEL. You should use lookup_name_current_level
- instead. */
-
-/* Note that the information in the `names' component of the global contour
- is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
-
-struct cp_binding_level GTY(())
- {
- /* A chain of _DECL nodes for all variables, constants, functions,
- and typedef types. These are in the reverse of the order
- supplied. There may be OVERLOADs on this list, too, but they
- are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */
- tree names;
-
- /* Count of elements in names chain. */
- size_t names_size;
-
- /* A chain of NAMESPACE_DECL nodes. */
- tree namespaces;
-
- /* An array of static functions and variables (for namespaces only) */
- varray_type static_decls;
-
- /* A chain of VTABLE_DECL nodes. */
- tree vtables;
-
- /* A dictionary for looking up user-defined-types. */
- binding_table type_decls;
-
- /* A list of USING_DECL nodes. */
- tree usings;
-
- /* A list of used namespaces. PURPOSE is the namespace,
- VALUE the common ancestor with this binding_level's namespace. */
- tree using_directives;
-
- /* If this binding level is the binding level for a class, then
- class_shadowed is a TREE_LIST. The TREE_PURPOSE of each node
- is the name of an entity bound in the class. The TREE_TYPE is
- the DECL bound by this name in the class. */
- tree class_shadowed;
-
- /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and
- is used for all binding levels. In addition the TREE_VALUE is the
- IDENTIFIER_TYPE_VALUE before we entered the class. */
- tree type_shadowed;
-
- /* A TREE_LIST. Each TREE_VALUE is the LABEL_DECL for a local
- label in this scope. The TREE_PURPOSE is the previous value of
- the IDENTIFIER_LABEL VALUE. */
- tree shadowed_labels;
-
- /* For each level (except not the global one),
- a chain of BLOCK nodes for all the levels
- that were entered and exited one level down. */
- tree blocks;
-
- /* The entity (namespace, class, function) the scope of which this
- binding contour corresponds to. Otherwise NULL. */
- tree this_entity;
-
- /* The binding level which this one is contained in (inherits from). */
- struct cp_binding_level *level_chain;
-
- /* List of VAR_DECLS saved from a previous for statement.
- These would be dead in ISO-conforming code, but might
- be referenced in ARM-era code. These are stored in a
- TREE_LIST; the TREE_VALUE is the actual declaration. */
- tree dead_vars_from_for;
-
- /* Binding depth at which this level began. */
- int binding_depth;
-
- /* The kind of scope that this object represents. However, a
- SK_TEMPLATE_SPEC scope is represented with KIND set to
- SK_TEMPALTE_PARMS and EXPLICIT_SPEC_P set to true. */
- enum scope_kind kind : 4;
-
- /* True if this scope is an SK_TEMPLATE_SPEC scope. This field is
- only valid if KIND == SK_TEMPLATE_PARMS. */
- bool explicit_spec_p : 1;
-
- /* true means make a BLOCK for this level regardless of all else. */
- unsigned keep : 1;
-
- /* Nonzero if this level can safely have additional
- cleanup-needing variables added to it. */
- unsigned more_cleanups_ok : 1;
- unsigned have_cleanups : 1;
-
- /* 22 bits left to fill a 32-bit word. */
- };
-
-#define NULL_BINDING_LEVEL ((struct cp_binding_level *) NULL)
-
-/* The binding level currently in effect. */
-
-#define current_binding_level \
- (*(cfun && cp_function_chain->bindings \
- ? &cp_function_chain->bindings \
- : &scope_chain->bindings))
-
-/* The binding level of the current class, if any. */
-
-#define class_binding_level scope_chain->class_bindings
-
/* A chain of binding_level structures awaiting reuse. */
static GTY((deletable (""))) struct cp_binding_level *free_binding_level;
push_to_top_level ();
current_function_decl = NULL_TREE;
- current_binding_level = NULL_BINDING_LEVEL;
- free_binding_level = NULL_BINDING_LEVEL;
+ current_binding_level = NULL;
/* Enter the global namespace. */
my_friendly_assert (global_namespace == NULL_TREE, 375);
global_namespace = build_lang_decl (NAMESPACE_DECL, global_scope_name,
extern void cxx_binding_free (cxx_binding *);
extern bool supplement_binding (cxx_binding *, tree);
\f
+/* The kinds of scopes we recognize. */
+typedef enum scope_kind {
+ sk_block = 0, /* An ordinary block scope. This enumerator must
+ have the value zero because "cp_binding_level"
+ is initialized by using "memset" to set the
+ contents to zero, and the default scope kind
+ is "sk_block". */
+ sk_cleanup, /* A scope for (pseudo-)scope for cleanup. It is
+ peusdo in that it is transparent to name lookup
+ activities. */
+ sk_try, /* A try-block. */
+ sk_catch, /* A catch-block. */
+ sk_for, /* The scope of the variable declared in a
+ for-init-statement. */
+ sk_function_parms, /* The scope containing function parameters. */
+ sk_class, /* The scope containing the members of a class. */
+ sk_namespace, /* The scope containing the members of a
+ namespace, including the global scope. */
+ sk_template_parms, /* A scope for template parameters. */
+ sk_template_spec /* Like sk_template_parms, but for an explicit
+ specialization. Since, by definition, an
+ explicit specialization is introduced by
+ "template <>", this scope is always empty. */
+} scope_kind;
+
+/* For each binding contour we allocate a binding_level structure
+ which records the names defined in that contour.
+ Contours include:
+ 0) the global one
+ 1) one for each function definition,
+ where internal declarations of the parameters appear.
+ 2) one for each compound statement,
+ to record its declarations.
+
+ The current meaning of a name can be found by searching the levels
+ from the current one out to the global one.
+
+ Off to the side, may be the class_binding_level. This exists only
+ to catch class-local declarations. It is otherwise nonexistent.
+
+ Also there may be binding levels that catch cleanups that must be
+ run when exceptions occur. Thus, to see whether a name is bound in
+ the current scope, it is not enough to look in the
+ CURRENT_BINDING_LEVEL. You should use lookup_name_current_level
+ instead. */
+
+/* Note that the information in the `names' component of the global contour
+ is duplicated in the IDENTIFIER_GLOBAL_VALUEs of all identifiers. */
+
+struct cp_binding_level GTY(())
+ {
+ /* A chain of _DECL nodes for all variables, constants, functions,
+ and typedef types. These are in the reverse of the order
+ supplied. There may be OVERLOADs on this list, too, but they
+ are wrapped in TREE_LISTs; the TREE_VALUE is the OVERLOAD. */
+ tree names;
+
+ /* Count of elements in names chain. */
+ size_t names_size;
+
+ /* A chain of NAMESPACE_DECL nodes. */
+ tree namespaces;
+
+ /* An array of static functions and variables (for namespaces only) */
+ varray_type static_decls;
+
+ /* A chain of VTABLE_DECL nodes. */
+ tree vtables;
+
+ /* A dictionary for looking up user-defined-types. */
+ binding_table type_decls;
+
+ /* A list of USING_DECL nodes. */
+ tree usings;
+
+ /* A list of used namespaces. PURPOSE is the namespace,
+ VALUE the common ancestor with this binding_level's namespace. */
+ tree using_directives;
+
+ /* If this binding level is the binding level for a class, then
+ class_shadowed is a TREE_LIST. The TREE_PURPOSE of each node
+ is the name of an entity bound in the class. The TREE_TYPE is
+ the DECL bound by this name in the class. */
+ tree class_shadowed;
+
+ /* Similar to class_shadowed, but for IDENTIFIER_TYPE_VALUE, and
+ is used for all binding levels. In addition the TREE_VALUE is the
+ IDENTIFIER_TYPE_VALUE before we entered the class. */
+ tree type_shadowed;
+
+ /* A TREE_LIST. Each TREE_VALUE is the LABEL_DECL for a local
+ label in this scope. The TREE_PURPOSE is the previous value of
+ the IDENTIFIER_LABEL VALUE. */
+ tree shadowed_labels;
+
+ /* For each level (except not the global one),
+ a chain of BLOCK nodes for all the levels
+ that were entered and exited one level down. */
+ tree blocks;
+
+ /* The entity (namespace, class, function) the scope of which this
+ binding contour corresponds to. Otherwise NULL. */
+ tree this_entity;
+
+ /* The binding level which this one is contained in (inherits from). */
+ struct cp_binding_level *level_chain;
+
+ /* List of VAR_DECLS saved from a previous for statement.
+ These would be dead in ISO-conforming code, but might
+ be referenced in ARM-era code. These are stored in a
+ TREE_LIST; the TREE_VALUE is the actual declaration. */
+ tree dead_vars_from_for;
+
+ /* Binding depth at which this level began. */
+ int binding_depth;
+
+ /* The kind of scope that this object represents. However, a
+ SK_TEMPLATE_SPEC scope is represented with KIND set to
+ SK_TEMPALTE_PARMS and EXPLICIT_SPEC_P set to true. */
+ enum scope_kind kind : 4;
+
+ /* True if this scope is an SK_TEMPLATE_SPEC scope. This field is
+ only valid if KIND == SK_TEMPLATE_PARMS. */
+ bool explicit_spec_p : 1;
+
+ /* true means make a BLOCK for this level regardless of all else. */
+ unsigned keep : 1;
+
+ /* Nonzero if this level can safely have additional
+ cleanup-needing variables added to it. */
+ unsigned more_cleanups_ok : 1;
+ unsigned have_cleanups : 1;
+
+ /* 22 bits left to fill a 32-bit word. */
+ };
+
+/* The binding level currently in effect. */
+
+#define current_binding_level \
+ (*(cfun && cp_function_chain->bindings \
+ ? &cp_function_chain->bindings \
+ : &scope_chain->bindings))
+
+/* The binding level of the current class, if any. */
+
+#define class_binding_level scope_chain->class_bindings
+
/* The tree node representing the global scope. */
extern GTY(()) tree global_namespace;
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