gcc/cp/name-lookup.h

   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 GCC.
   6
   7 GCC 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 GCC 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 GCC; 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 /* The datatype used to implement C++ scope.  */
  36 typedef struct cp_binding_level cxx_scope;
  37
  38 /* Nonzero if this binding is for a local scope, as opposed to a class
  39    or namespace scope.  */
  40 #define LOCAL_BINDING_P(NODE) ((NODE)->is_local)
  41
  42 /* Nonzero if BINDING_VALUE is from a base class of the class which is
  43    currently being defined.  */
  44 #define INHERITED_VALUE_BINDING_P(NODE) ((NODE)->value_is_inherited)
  45
  46 /* For a binding between a name and an entity at a non-local scope,
  47    defines the scope where the binding is declared.  (Either a class
  48    _TYPE node, or a NAMESPACE_DECL.).  */
  49 #define BINDING_SCOPE(NODE) ((NODE)->scope)
  50
  51 /* This is the declaration bound to the name. Possible values:
  52    variable, overloaded function, namespace, template, enumerator.  */
  53 #define BINDING_VALUE(NODE) ((NODE)->value)
  54
  55 /* If name is bound to a type, this is the type (struct, union, enum).  */
  56 #define BINDING_TYPE(NODE)   ((NODE)->type)
  57
  58 /* Zero out a cxx_binding pointed to by B.  */
  59 #define cxx_binding_clear(B) memset ((B), 0, sizeof (cxx_binding))
  60
  61 struct cxx_binding GTY(())
  62 {
  63   /* Link to chain together various bindings for this name.  */
  64   cxx_binding *previous;
  65   /* The non-type entity this name is bound to.  */
  66   tree value;
  67   /* The type entity this name is bound to.  */
  68   tree type;
  69   /* The scope at which this binding was made.  */
  70   cxx_scope *scope;
  71   unsigned value_is_inherited : 1;
  72   unsigned is_local : 1;
  73 };
  74
  75 extern cxx_binding *cxx_binding_make (tree, tree);
  76 extern void cxx_binding_free (cxx_binding *);
  77 \f
  78
  79 extern cxx_binding *cxx_scope_find_binding_for_name (cxx_scope *, tree);
  80 extern cxx_binding *binding_for_name (cxx_scope *, tree);
  81 \f
  82 extern tree namespace_binding (tree, tree);
  83 extern void set_namespace_binding (tree, tree, tree);
  84
  85 #endif /* GCC_CP_NAME_LOOKUP_H */