diff options
Diffstat (limited to 'lib/Index/Entity.cpp')
-rw-r--r-- | lib/Index/Entity.cpp | 270 |
1 files changed, 0 insertions, 270 deletions
diff --git a/lib/Index/Entity.cpp b/lib/Index/Entity.cpp deleted file mode 100644 index fbab6d8684..0000000000 --- a/lib/Index/Entity.cpp +++ /dev/null @@ -1,270 +0,0 @@ -//===--- Entity.cpp - Cross-translation-unit "token" for decls ------------===// -// -// The LLVM Compiler Infrastructure -// -// This file is distributed under the University of Illinois Open Source -// License. See LICENSE.TXT for details. -// -//===----------------------------------------------------------------------===// -// -// Entity is a ASTContext-independent way to refer to declarations that are -// visible across translation units. -// -//===----------------------------------------------------------------------===// - -#include "EntityImpl.h" -#include "ProgramImpl.h" -#include "clang/Index/Program.h" -#include "clang/Index/GlobalSelector.h" -#include "clang/AST/Decl.h" -#include "clang/AST/ASTContext.h" -#include "clang/AST/DeclVisitor.h" -using namespace clang; -using namespace idx; - -// FIXME: Entity is really really basic currently, mostly written to work -// on variables and functions. Should support types and other decls eventually.. - - -//===----------------------------------------------------------------------===// -// EntityGetter -//===----------------------------------------------------------------------===// - -namespace clang { -namespace idx { - -/// \brief Gets the Entity associated with a Decl. -class EntityGetter : public DeclVisitor<EntityGetter, Entity> { - Program &Prog; - ProgramImpl &ProgImpl; - -public: - EntityGetter(Program &prog, ProgramImpl &progImpl) - : Prog(prog), ProgImpl(progImpl) { } - - // Get an Entity. - Entity getEntity(Entity Parent, DeclarationName Name, - unsigned IdNS, bool isObjCInstanceMethod); - - // Get an Entity associated with the name in the global namespace. - Entity getGlobalEntity(StringRef Name); - - Entity VisitNamedDecl(NamedDecl *D); - Entity VisitVarDecl(VarDecl *D); - Entity VisitFieldDecl(FieldDecl *D); - Entity VisitFunctionDecl(FunctionDecl *D); - Entity VisitTypeDecl(TypeDecl *D); -}; - -} -} - -Entity EntityGetter::getEntity(Entity Parent, DeclarationName Name, - unsigned IdNS, bool isObjCInstanceMethod) { - llvm::FoldingSetNodeID ID; - EntityImpl::Profile(ID, Parent, Name, IdNS, isObjCInstanceMethod); - - ProgramImpl::EntitySetTy &Entities = ProgImpl.getEntities(); - void *InsertPos = 0; - if (EntityImpl *Ent = Entities.FindNodeOrInsertPos(ID, InsertPos)) - return Entity(Ent); - - void *Buf = ProgImpl.Allocate(sizeof(EntityImpl)); - EntityImpl *New = - new (Buf) EntityImpl(Parent, Name, IdNS, isObjCInstanceMethod); - Entities.InsertNode(New, InsertPos); - - return Entity(New); -} - -Entity EntityGetter::getGlobalEntity(StringRef Name) { - IdentifierInfo *II = &ProgImpl.getIdents().get(Name); - DeclarationName GlobName(II); - unsigned IdNS = Decl::IDNS_Ordinary; - return getEntity(Entity(), GlobName, IdNS, false); -} - -Entity EntityGetter::VisitNamedDecl(NamedDecl *D) { - Entity Parent; - if (!D->getDeclContext()->isTranslationUnit()) { - Parent = Visit(cast<Decl>(D->getDeclContext())); - // FIXME: Anonymous structs ? - if (Parent.isInvalid()) - return Entity(); - } - if (Parent.isValid() && Parent.isInternalToTU()) - return Entity(D); - - // FIXME: Only works for DeclarationNames that are identifiers and selectors. - // Treats other DeclarationNames as internal Decls for now.. - - DeclarationName LocalName = D->getDeclName(); - if (!LocalName) - return Entity(D); - - DeclarationName GlobName; - - if (IdentifierInfo *II = LocalName.getAsIdentifierInfo()) { - IdentifierInfo *GlobII = &ProgImpl.getIdents().get(II->getName()); - GlobName = DeclarationName(GlobII); - } else { - Selector LocalSel = LocalName.getObjCSelector(); - - // Treats other DeclarationNames as internal Decls for now.. - if (LocalSel.isNull()) - return Entity(D); - - Selector GlobSel = - (uintptr_t)GlobalSelector::get(LocalSel, Prog).getAsOpaquePtr(); - GlobName = DeclarationName(GlobSel); - } - - assert(GlobName); - - unsigned IdNS = D->getIdentifierNamespace(); - - ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D); - bool isObjCInstanceMethod = MD && MD->isInstanceMethod(); - return getEntity(Parent, GlobName, IdNS, isObjCInstanceMethod); -} - -Entity EntityGetter::VisitVarDecl(VarDecl *D) { - // Local variables have no linkage, make invalid Entities. - if (D->hasLocalStorage()) - return Entity(); - - // If it's static it cannot be referred to by another translation unit. - if (D->getStorageClass() == SC_Static) - return Entity(D); - - return VisitNamedDecl(D); -} - -Entity EntityGetter::VisitFunctionDecl(FunctionDecl *D) { - // If it's static it cannot be referred to by another translation unit. - if (D->getStorageClass() == SC_Static) - return Entity(D); - - return VisitNamedDecl(D); -} - -Entity EntityGetter::VisitFieldDecl(FieldDecl *D) { - // Make FieldDecl an invalid Entity since it has no linkage. - return Entity(); -} - -Entity EntityGetter::VisitTypeDecl(TypeDecl *D) { - // Although in C++ class name has external linkage, usually the definition of - // the class is available in the same translation unit when it's needed. So we - // make all of them invalid Entity. - return Entity(); -} - -//===----------------------------------------------------------------------===// -// EntityImpl Implementation -//===----------------------------------------------------------------------===// - -Decl *EntityImpl::getDecl(ASTContext &AST) { - DeclContext *DC = - Parent.isInvalid() ? AST.getTranslationUnitDecl() - : cast<DeclContext>(Parent.getDecl(AST)); - if (!DC) - return 0; // Couldn't get the parent context. - - DeclarationName LocalName; - - if (IdentifierInfo *GlobII = Name.getAsIdentifierInfo()) { - IdentifierInfo &II = AST.Idents.get(GlobII->getName()); - LocalName = DeclarationName(&II); - } else { - Selector GlobSel = Name.getObjCSelector(); - assert(!GlobSel.isNull() && "A not handled yet declaration name"); - GlobalSelector GSel = - GlobalSelector::getFromOpaquePtr(GlobSel.getAsOpaquePtr()); - LocalName = GSel.getSelector(AST); - } - - assert(LocalName); - - DeclContext::lookup_result Res = DC->lookup(LocalName); - for (DeclContext::lookup_iterator I = Res.first, E = Res.second; I!=E; ++I) { - Decl *D = *I; - if (D->getIdentifierNamespace() == IdNS) { - if (ObjCMethodDecl *MD = dyn_cast<ObjCMethodDecl>(D)) { - if (MD->isInstanceMethod() == IsObjCInstanceMethod) - return MD; - } else - return D; - } - } - - return 0; // Failed to find a decl using this Entity. -} - -/// \brief Get an Entity associated with the given Decl. -/// \returns Null if an Entity cannot refer to this Decl. -Entity EntityImpl::get(Decl *D, Program &Prog, ProgramImpl &ProgImpl) { - assert(D && "Passed null Decl"); - return EntityGetter(Prog, ProgImpl).Visit(D); -} - -/// \brief Get an Entity associated with a global name. -Entity EntityImpl::get(StringRef Name, Program &Prog, - ProgramImpl &ProgImpl) { - return EntityGetter(Prog, ProgImpl).getGlobalEntity(Name); -} - -std::string EntityImpl::getPrintableName() { - return Name.getAsString(); -} - -//===----------------------------------------------------------------------===// -// Entity Implementation -//===----------------------------------------------------------------------===// - -Entity::Entity(Decl *D) : Val(D->getCanonicalDecl()) { } - -/// \brief Find the Decl that can be referred to by this entity. -Decl *Entity::getDecl(ASTContext &AST) const { - if (isInvalid()) - return 0; - - if (Decl *D = Val.dyn_cast<Decl *>()) - // Check that the passed AST is actually the one that this Decl belongs to. - return (&D->getASTContext() == &AST) ? D : 0; - - return Val.get<EntityImpl *>()->getDecl(AST); -} - -std::string Entity::getPrintableName() const { - if (isInvalid()) - return "<< Invalid >>"; - - if (Decl *D = Val.dyn_cast<Decl *>()) { - if (NamedDecl *ND = dyn_cast<NamedDecl>(D)) - return ND->getNameAsString(); - else - return std::string(); - } - - return Val.get<EntityImpl *>()->getPrintableName(); -} - -/// \brief Get an Entity associated with the given Decl. -/// \returns Null if an Entity cannot refer to this Decl. -Entity Entity::get(Decl *D, Program &Prog) { - if (D == 0) - return Entity(); - ProgramImpl &ProgImpl = *static_cast<ProgramImpl*>(Prog.Impl); - return EntityImpl::get(D, Prog, ProgImpl); -} - -Entity Entity::get(StringRef Name, Program &Prog) { - ProgramImpl &ProgImpl = *static_cast<ProgramImpl*>(Prog.Impl); - return EntityImpl::get(Name, Prog, ProgImpl); -} - -unsigned -llvm::DenseMapInfo<Entity>::getHashValue(Entity E) { - return DenseMapInfo<void*>::getHashValue(E.getAsOpaquePtr()); -} |