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//===-- DeclLookups.h - Low-level interface to all names in a DC-*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file defines DeclContext::all_lookups_iterator.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_DECLLOOKUPS_H
#define LLVM_CLANG_AST_DECLLOOKUPS_H
#include "clang/AST/ASTContext.h"
#include "clang/AST/DeclBase.h"
#include "clang/AST/DeclContextInternals.h"
#include "clang/AST/DeclarationName.h"
namespace clang {
/// all_lookups_iterator - An iterator that provides a view over the results
/// of looking up every possible name.
class DeclContext::all_lookups_iterator {
StoredDeclsMap::iterator It, End;
public:
typedef lookup_result value_type;
typedef lookup_result reference;
typedef lookup_result pointer;
typedef std::forward_iterator_tag iterator_category;
typedef std::ptrdiff_t difference_type;
all_lookups_iterator() {}
all_lookups_iterator(StoredDeclsMap::iterator It,
StoredDeclsMap::iterator End)
: It(It), End(End) {}
DeclarationName getLookupName() const { return It->first; }
reference operator*() const { return It->second.getLookupResult(); }
pointer operator->() const { return It->second.getLookupResult(); }
all_lookups_iterator& operator++() {
// Filter out using directives. They don't belong as results from name
// lookup anyways, except as an implementation detail. Users of the API
// should not expect to get them (or worse, rely on it).
do {
++It;
} while (It != End &&
It->first == DeclarationName::getUsingDirectiveName());
return *this;
}
all_lookups_iterator operator++(int) {
all_lookups_iterator tmp(*this);
++(*this);
return tmp;
}
friend bool operator==(all_lookups_iterator x, all_lookups_iterator y) {
return x.It == y.It;
}
friend bool operator!=(all_lookups_iterator x, all_lookups_iterator y) {
return x.It != y.It;
}
};
inline DeclContext::all_lookups_iterator DeclContext::lookups_begin() const {
DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
if (Primary->hasExternalVisibleStorage())
getParentASTContext().getExternalSource()->completeVisibleDeclsMap(Primary);
if (StoredDeclsMap *Map = Primary->buildLookup())
return all_lookups_iterator(Map->begin(), Map->end());
return all_lookups_iterator();
}
inline DeclContext::all_lookups_iterator DeclContext::lookups_end() const {
DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
if (Primary->hasExternalVisibleStorage())
getParentASTContext().getExternalSource()->completeVisibleDeclsMap(Primary);
if (StoredDeclsMap *Map = Primary->buildLookup())
return all_lookups_iterator(Map->end(), Map->end());
return all_lookups_iterator();
}
inline
DeclContext::all_lookups_iterator DeclContext::noload_lookups_begin() const {
DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
if (StoredDeclsMap *Map = Primary->getLookupPtr())
return all_lookups_iterator(Map->begin(), Map->end());
return all_lookups_iterator();
}
inline
DeclContext::all_lookups_iterator DeclContext::noload_lookups_end() const {
DeclContext *Primary = const_cast<DeclContext*>(this)->getPrimaryContext();
if (StoredDeclsMap *Map = Primary->getLookupPtr())
return all_lookups_iterator(Map->end(), Map->end());
return all_lookups_iterator();
}
} // end namespace clang
#endif
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