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aed81407 GDR |
1 | /* Declarations for C++ name lookup routines. |
2 | Copyright (C) 2003 Free Software Foundation, Inc. | |
3 | Contributed by Gabriel Dos Reis <gdr@integrable-solutions.net> | |
4 | ||
5 | This file is part of GNU CC. | |
6 | ||
7 | GNU CC is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2, or (at your option) | |
10 | any later version. | |
11 | ||
12 | GNU CC is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GNU CC; see the file COPYING. If not, write to | |
19 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #ifndef GCC_CP_NAME_LOOKUP_H | |
23 | #define GCC_CP_NAME_LOOKUP_H | |
24 | ||
25 | #include "c-common.h" | |
26 | ||
27 | /* Datatype used to temporarily save C++ bindings (for implicit | |
28 | instantiations purposes and like). Implemented in decl.c. */ | |
29 | typedef struct cxx_saved_binding cxx_saved_binding; | |
30 | ||
31 | /* Datatype that represents binding established by a declaration between | |
32 | a name and a C++ entity. */ | |
33 | typedef struct cxx_binding cxx_binding; | |
34 | ||
35 | /* Nonzero if this binding is for a local scope, as opposed to a class | |
36 | or namespace scope. */ | |
37 | #define LOCAL_BINDING_P(NODE) ((NODE)->is_local) | |
38 | ||
39 | /* Nonzero if BINDING_VALUE is from a base class of the class which is | |
40 | currently being defined. */ | |
41 | #define INHERITED_VALUE_BINDING_P(NODE) ((NODE)->value_is_inherited) | |
42 | ||
43 | /* For a binding between a name and an entity at a non-local scope, | |
44 | defines the scope where the binding is declared. (Either a class | |
45 | _TYPE node, or a NAMESPACE_DECL.) This macro should be used only | |
46 | for namespace-level bindings; on the IDENTIFIER_BINDING list | |
47 | BINDING_LEVEL is used instead. */ | |
48 | #define BINDING_SCOPE(NODE) ((NODE)->scope.scope) | |
49 | ||
50 | /* Nonzero if NODE has BINDING_LEVEL, rather than BINDING_SCOPE. */ | |
51 | #define BINDING_HAS_LEVEL_P(NODE) ((NODE)->has_level) | |
52 | ||
53 | /* This is the declaration bound to the name. Possible values: | |
54 | variable, overloaded function, namespace, template, enumerator. */ | |
55 | #define BINDING_VALUE(NODE) ((NODE)->value) | |
56 | ||
57 | /* If name is bound to a type, this is the type (struct, union, enum). */ | |
58 | #define BINDING_TYPE(NODE) ((NODE)->type) | |
59 | ||
60 | /* Zero out a cxx_binding pointed to by B. */ | |
61 | #define cxx_binding_clear(B) memset ((B), 0, sizeof (cxx_binding)) | |
62 | ||
63 | struct cxx_binding GTY(()) | |
64 | { | |
65 | /* Link to chain together various bindings for this name. */ | |
66 | cxx_binding *previous; | |
67 | /* The non-type entity this name is bound to. */ | |
68 | tree value; | |
69 | /* The type entity this name is bound to. */ | |
70 | tree type; | |
71 | union tree_binding_u { | |
72 | tree GTY ((tag ("0"))) scope; | |
73 | struct cp_binding_level * GTY ((tag ("1"))) level; | |
74 | } GTY ((desc ("%0.has_level"))) scope; | |
75 | unsigned has_level : 1; | |
76 | unsigned value_is_inherited : 1; | |
77 | unsigned is_local : 1; | |
78 | }; | |
79 | ||
80 | extern cxx_binding *cxx_binding_make (tree, tree); | |
81 | extern void cxx_binding_free (cxx_binding *); | |
82 | \f | |
83 | ||
84 | ||
85 | #endif /* GCC_CP_NAME_LOOKUP_H */ |