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126 lines
4.8 KiB
C++
126 lines
4.8 KiB
C++
//===--- NameLookupRequests.cpp - Name Lookup Requests --------------------===//
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//
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// This source file is part of the Swift.org open source project
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//
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// Copyright (c) 2014 - 2017 Apple Inc. and the Swift project authors
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// Licensed under Apache License v2.0 with Runtime Library Exception
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//
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// See https://swift.org/LICENSE.txt for license information
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// See https://swift.org/CONTRIBUTORS.txt for the list of Swift project authors
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//
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//===----------------------------------------------------------------------===//
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#include "swift/AST/NameLookupRequests.h"
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#include "swift/Subsystems.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/Evaluator.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Module.h"
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using namespace swift;
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namespace swift {
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// Implement the name lookup type zone.
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#define SWIFT_TYPEID_ZONE NameLookup
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#define SWIFT_TYPEID_HEADER "swift/AST/NameLookupTypeIDZone.def"
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#include "swift/Basic/ImplementTypeIDZone.h"
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#undef SWIFT_TYPEID_ZONE
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#undef SWIFT_TYPEID_HEADER
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}
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//----------------------------------------------------------------------------//
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// Referenced inherited decls computation.
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//----------------------------------------------------------------------------//
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TypeLoc &InheritedDeclsReferencedRequest::getTypeLoc(
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llvm::PointerUnion<TypeDecl *, ExtensionDecl *> decl,
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unsigned index) const {
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// FIXME: Copy-pasted from InheritedTypeRequest. We need to consolidate here.
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if (auto typeDecl = decl.dyn_cast<TypeDecl *>())
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return typeDecl->getInherited()[index];
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return decl.get<ExtensionDecl *>()->getInherited()[index];
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}
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SourceLoc InheritedDeclsReferencedRequest::getNearestLoc() const {
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const auto &storage = getStorage();
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auto &typeLoc = getTypeLoc(std::get<0>(storage), std::get<1>(storage));
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return typeLoc.getLoc();
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}
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//----------------------------------------------------------------------------//
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// Superclass declaration computation.
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//----------------------------------------------------------------------------//
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Optional<ClassDecl *> SuperclassDeclRequest::getCachedResult() const {
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auto nominalDecl = std::get<0>(getStorage());
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if (auto *classDecl = dyn_cast<ClassDecl>(nominalDecl))
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if (classDecl->LazySemanticInfo.SuperclassDecl.getInt())
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return classDecl->LazySemanticInfo.SuperclassDecl.getPointer();
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if (auto *protocolDecl = dyn_cast<ProtocolDecl>(nominalDecl))
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if (protocolDecl->LazySemanticInfo.SuperclassDecl.getInt())
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return protocolDecl->LazySemanticInfo.SuperclassDecl.getPointer();
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return None;
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}
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void SuperclassDeclRequest::cacheResult(ClassDecl *value) const {
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auto nominalDecl = std::get<0>(getStorage());
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if (auto *classDecl = dyn_cast<ClassDecl>(nominalDecl))
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classDecl->LazySemanticInfo.SuperclassDecl.setPointerAndInt(value, true);
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if (auto *protocolDecl = dyn_cast<ProtocolDecl>(nominalDecl))
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protocolDecl->LazySemanticInfo.SuperclassDecl.setPointerAndInt(value, true);
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}
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//----------------------------------------------------------------------------//
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// Extended nominal computation.
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//----------------------------------------------------------------------------//
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Optional<NominalTypeDecl *> ExtendedNominalRequest::getCachedResult() const {
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// Note: if we fail to compute any nominal declaration, it's considered
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// a cache miss. This allows us to recompute the extended nominal types
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// during extension binding.
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auto ext = std::get<0>(getStorage());
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if (ext->ExtendedNominal)
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return ext->ExtendedNominal;
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return None;
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}
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void ExtendedNominalRequest::cacheResult(NominalTypeDecl *value) const {
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auto ext = std::get<0>(getStorage());
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if (value)
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ext->ExtendedNominal = value;
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}
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//----------------------------------------------------------------------------//
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// Destructor computation.
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//----------------------------------------------------------------------------//
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Optional<DestructorDecl *> GetDestructorRequest::getCachedResult() const {
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auto *classDecl = std::get<0>(getStorage());
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auto results = classDecl->lookupDirect(DeclBaseName::createDestructor());
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if (results.empty())
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return None;
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return cast<DestructorDecl>(results.front());
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}
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void GetDestructorRequest::cacheResult(DestructorDecl *value) const {
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auto *classDecl = std::get<0>(getStorage());
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classDecl->addMember(value);
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}
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// Define request evaluation functions for each of the name lookup requests.
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static AbstractRequestFunction *nameLookupRequestFunctions[] = {
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#define SWIFT_REQUEST(Zone, Name) \
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reinterpret_cast<AbstractRequestFunction *>(&Name::evaluateRequest),
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#include "swift/AST/NameLookupTypeIDZone.def"
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#undef SWIFT_REQUEST
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};
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void swift::registerNameLookupRequestFunctions(Evaluator &evaluator) {
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evaluator.registerRequestFunctions(Zone::NameLookup,
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nameLookupRequestFunctions);
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}
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