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//===--- DeclReferenceMap.cpp - Map Decls to their references -------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// DeclReferenceMap creates a mapping from Decls to the ASTLocations that
// reference them.
//
//===----------------------------------------------------------------------===//
#include "clang/Index/DeclReferenceMap.h"
#include "clang/Index/ASTLocation.h"
#include "ASTVisitor.h"
#include "llvm/Support/Compiler.h"
using namespace clang;
using namespace idx;
namespace {
class VISIBILITY_HIDDEN RefMapper : public ASTVisitor<RefMapper> {
DeclReferenceMap::MapTy ⤅
public:
RefMapper(DeclReferenceMap::MapTy &map) : Map(map) { }
void VisitDeclRefExpr(DeclRefExpr *Node);
void VisitMemberExpr(MemberExpr *Node);
void VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node);
void VisitTypedefLoc(TypedefLoc TL);
void VisitObjCInterfaceLoc(ObjCInterfaceLoc TL);
};
} // anonymous namespace
//===----------------------------------------------------------------------===//
// RefMapper Implementation
//===----------------------------------------------------------------------===//
void RefMapper::VisitDeclRefExpr(DeclRefExpr *Node) {
NamedDecl *PrimD = cast<NamedDecl>(Node->getDecl()->getCanonicalDecl());
Map.insert(std::make_pair(PrimD, ASTLocation(CurrentDecl, Node)));
}
void RefMapper::VisitMemberExpr(MemberExpr *Node) {
NamedDecl *PrimD = cast<NamedDecl>(Node->getMemberDecl()->getCanonicalDecl());
Map.insert(std::make_pair(PrimD, ASTLocation(CurrentDecl, Node)));
}
void RefMapper::VisitObjCIvarRefExpr(ObjCIvarRefExpr *Node) {
Map.insert(std::make_pair(Node->getDecl(), ASTLocation(CurrentDecl, Node)));
}
void RefMapper::VisitTypedefLoc(TypedefLoc TL) {
NamedDecl *ND = TL.getTypedefDecl();
Map.insert(std::make_pair(ND, ASTLocation(CurrentDecl, ND, TL.getNameLoc())));
}
void RefMapper::VisitObjCInterfaceLoc(ObjCInterfaceLoc TL) {
NamedDecl *ND = TL.getIFaceDecl();
Map.insert(std::make_pair(ND, ASTLocation(CurrentDecl, ND, TL.getNameLoc())));
}
//===----------------------------------------------------------------------===//
// DeclReferenceMap Implementation
//===----------------------------------------------------------------------===//
DeclReferenceMap::DeclReferenceMap(ASTContext &Ctx) {
RefMapper(Map).Visit(Ctx.getTranslationUnitDecl());
}
DeclReferenceMap::astlocation_iterator
DeclReferenceMap::refs_begin(NamedDecl *D) const {
NamedDecl *Prim = cast<NamedDecl>(D->getCanonicalDecl());
return astlocation_iterator(Map.lower_bound(Prim));
}
DeclReferenceMap::astlocation_iterator
DeclReferenceMap::refs_end(NamedDecl *D) const {
NamedDecl *Prim = cast<NamedDecl>(D->getCanonicalDecl());
return astlocation_iterator(Map.upper_bound(Prim));
}
bool DeclReferenceMap::refs_empty(NamedDecl *D) const {
NamedDecl *Prim = cast<NamedDecl>(D->getCanonicalDecl());
return refs_begin(Prim) == refs_end(Prim);
}
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