mirror of
https://github.com/apple/swift.git
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c547e6885e
Make sure they handle the case when a property wrapper type's constructor is called with the first argument coming from the var initializer, and the rest from the custom attribute's argument.
806 lines
25 KiB
C++
806 lines
25 KiB
C++
//===--- SourceEntityWalker.cpp - Routines for semantic source info -------===//
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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/IDE/SourceEntityWalker.h"
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#include "swift/Parse/Lexer.h"
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#include "swift/AST/ASTContext.h"
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#include "swift/AST/ASTWalker.h"
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#include "swift/AST/Decl.h"
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#include "swift/AST/Expr.h"
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#include "swift/AST/Module.h"
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#include "swift/AST/Pattern.h"
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#include "swift/AST/ParameterList.h"
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#include "swift/AST/Stmt.h"
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#include "swift/AST/TypeRepr.h"
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#include "swift/AST/Types.h"
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#include "swift/Basic/SourceManager.h"
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#include "clang/Basic/Module.h"
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using namespace swift;
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namespace {
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class SemaAnnotator : public ASTWalker {
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SourceEntityWalker &SEWalker;
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SmallVector<ConstructorRefCallExpr *, 2> CtorRefs;
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SmallVector<ExtensionDecl *, 2> ExtDecls;
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llvm::SmallDenseMap<OpaqueValueExpr *, Expr *, 4> OpaqueValueMap;
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llvm::SmallPtrSet<Expr *, 16> ExprsToSkip;
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bool Cancelled = false;
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Optional<AccessKind> OpAccess;
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public:
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explicit SemaAnnotator(SourceEntityWalker &SEWalker)
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: SEWalker(SEWalker) { }
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bool isDone() const { return Cancelled; }
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private:
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bool shouldWalkIntoGenericParams() override {
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return SEWalker.shouldWalkIntoGenericParams();
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}
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bool walkToDeclPre(Decl *D) override;
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std::pair<bool, Expr *> walkToExprPre(Expr *E) override;
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bool walkToTypeReprPre(TypeRepr *T) override;
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bool walkToDeclPost(Decl *D) override;
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Expr *walkToExprPost(Expr *E) override;
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bool walkToTypeReprPost(TypeRepr *T) override;
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std::pair<bool, Stmt *> walkToStmtPre(Stmt *S) override;
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Stmt *walkToStmtPost(Stmt *S) override;
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std::pair<bool, Pattern *> walkToPatternPre(Pattern *P) override;
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bool handleImports(ImportDecl *Import);
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bool handleCustomAttributes(Decl *D);
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bool passModulePathElements(ArrayRef<ImportDecl::AccessPathElement> Path,
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const clang::Module *ClangMod);
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bool passReference(ValueDecl *D, Type Ty, SourceLoc Loc, SourceRange Range,
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ReferenceMetaData Data);
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bool passReference(ValueDecl *D, Type Ty, DeclNameLoc Loc, ReferenceMetaData Data);
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bool passReference(ModuleEntity Mod, std::pair<Identifier, SourceLoc> IdLoc);
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bool passSubscriptReference(ValueDecl *D, SourceLoc Loc,
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ReferenceMetaData Data, bool IsOpenBracket);
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bool passCallArgNames(Expr *Fn, TupleExpr *TupleE);
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bool shouldIgnore(Decl *D, bool &ShouldVisitChildren);
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ValueDecl *extractDecl(Expr *Fn) const {
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if (auto *DRE = dyn_cast<DeclRefExpr>(Fn))
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return DRE->getDecl();
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if (auto ApplyE = dyn_cast<ApplyExpr>(Fn))
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return extractDecl(ApplyE->getFn());
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return nullptr;
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}
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};
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} // end anonymous namespace
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bool SemaAnnotator::walkToDeclPre(Decl *D) {
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if (isDone())
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return false;
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bool ShouldVisitChildren;
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if (shouldIgnore(D, ShouldVisitChildren))
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return ShouldVisitChildren;
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if (!handleCustomAttributes(D)) {
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Cancelled = true;
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return false;
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}
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SourceLoc Loc = D->getLoc();
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unsigned NameLen = 0;
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bool IsExtension = false;
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if (auto *VD = dyn_cast<ValueDecl>(D)) {
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if (VD->hasName() && !VD->isImplicit())
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NameLen = VD->getBaseName().userFacingName().size();
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auto ReportParamList = [&](ParameterList *PL) {
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for (auto *PD : *PL) {
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auto Loc = PD->getArgumentNameLoc();
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if (Loc.isInvalid())
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continue;
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if (!SEWalker.visitDeclarationArgumentName(PD->getArgumentName(), Loc,
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VD)) {
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Cancelled = true;
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return true;
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}
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}
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return false;
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};
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if (auto AF = dyn_cast<AbstractFunctionDecl>(VD)) {
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if (ReportParamList(AF->getParameters()))
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return false;
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}
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if (auto SD = dyn_cast<SubscriptDecl>(VD)) {
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if (ReportParamList(SD->getIndices()))
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return false;
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}
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} else if (auto *ED = dyn_cast<ExtensionDecl>(D)) {
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SourceRange SR = ED->getExtendedTypeLoc().getSourceRange();
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Loc = SR.Start;
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if (Loc.isValid())
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NameLen = ED->getASTContext().SourceMgr.getByteDistance(SR.Start, SR.End);
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IsExtension = true;
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} else if (auto Import = dyn_cast<ImportDecl>(D)) {
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if (!handleImports(Import))
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return false;
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} else if (auto OpD = dyn_cast<OperatorDecl>(D)) {
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Loc = OpD->getLoc();
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if (Loc.isValid())
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NameLen = OpD->getName().getLength();
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} else if (auto PrecD = dyn_cast<PrecedenceGroupDecl>(D)) {
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Loc = PrecD->getLoc();
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if (Loc.isValid())
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NameLen = PrecD->getName().getLength();
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} else if (auto *ICD = dyn_cast<IfConfigDecl>(D)) {
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if (SEWalker.shouldWalkInactiveConfigRegion()) {
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for (auto Clause : ICD->getClauses()) {
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for (auto Member : Clause.Elements) {
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Member.walk(*this);
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}
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}
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return false;
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}
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} else {
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return true;
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}
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CharSourceRange Range = (Loc.isValid()) ? CharSourceRange(Loc, NameLen)
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: CharSourceRange();
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ShouldVisitChildren = SEWalker.walkToDeclPre(D, Range);
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if (ShouldVisitChildren && IsExtension) {
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ExtDecls.push_back(static_cast<ExtensionDecl*>(D));
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}
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return ShouldVisitChildren;
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}
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bool SemaAnnotator::walkToDeclPost(Decl *D) {
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if (isDone())
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return false;
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bool ShouldVisitChildren;
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if (shouldIgnore(D, ShouldVisitChildren))
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return true;
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// FIXME: rdar://17671977 the initializer for a lazy property has already
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// been moved into its implicit getter.
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if (auto *PBD = dyn_cast<PatternBindingDecl>(D)) {
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if (auto *VD = PBD->getSingleVar()) {
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if (VD->getAttrs().hasAttribute<LazyAttr>()) {
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if (auto *Get = VD->getGetter()) {
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assert((Get->isImplicit() || Get->isInvalid())
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&& "lazy var getter must be either implicitly computed or invalid");
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// Note that an implicit getter may not have the body synthesized
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// in case the owning PatternBindingDecl is invalid.
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if (auto *Body = Get->getBody()) {
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Body->walk(*this);
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}
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}
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}
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}
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}
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if (isa<ExtensionDecl>(D)) {
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assert(ExtDecls.back() == D);
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ExtDecls.pop_back();
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}
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if (!isa<ValueDecl>(D) && !isa<ExtensionDecl>(D) && !isa<ImportDecl>(D) &&
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!isa<IfConfigDecl>(D))
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return true;
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bool Continue = SEWalker.walkToDeclPost(D);
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if (!Continue)
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Cancelled = true;
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return Continue;
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}
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std::pair<bool, Stmt *> SemaAnnotator::walkToStmtPre(Stmt *S) {
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bool TraverseChildren = SEWalker.walkToStmtPre(S);
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if (TraverseChildren) {
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if (auto *DeferS = dyn_cast<DeferStmt>(S)) {
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// Since 'DeferStmt::getTempDecl()' is marked as implicit, we manually
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// walk into the body.
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if (auto *FD = DeferS->getTempDecl()) {
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auto *RetS = FD->getBody()->walk(*this);
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if (!RetS)
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return { false, nullptr };
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assert(RetS == FD->getBody());
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}
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bool Continue = SEWalker.walkToStmtPost(DeferS);
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if (!Continue)
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Cancelled = true;
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// Already walked children.
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return { false, Continue ? DeferS : nullptr };
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}
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}
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return { TraverseChildren, S };
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}
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Stmt *SemaAnnotator::walkToStmtPost(Stmt *S) {
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bool Continue = SEWalker.walkToStmtPost(S);
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if (!Continue)
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Cancelled = true;
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return Continue ? S : nullptr;
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}
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static SemaReferenceKind getReferenceKind(Expr *Parent, Expr *E) {
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if (auto SA = dyn_cast_or_null<SelfApplyExpr>(Parent)) {
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if (SA->getFn() == E)
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return SemaReferenceKind::DeclMemberRef;
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}
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return SemaReferenceKind::DeclRef;
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}
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std::pair<bool, Expr *> SemaAnnotator::walkToExprPre(Expr *E) {
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assert(E);
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if (isDone())
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return { false, nullptr };
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if (ExprsToSkip.count(E) != 0)
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return { false, E };
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if (!SEWalker.walkToExprPre(E))
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return { false, E };
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if (auto *CtorRefE = dyn_cast<ConstructorRefCallExpr>(E))
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CtorRefs.push_back(CtorRefE);
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if (!isa<InOutExpr>(E) &&
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!isa<LoadExpr>(E) &&
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!isa<OpenExistentialExpr>(E) &&
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!isa<MakeTemporarilyEscapableExpr>(E) &&
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!isa<CollectionUpcastConversionExpr>(E) &&
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!isa<OpaqueValueExpr>(E) &&
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!isa<SubscriptExpr>(E) &&
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!isa<KeyPathExpr>(E) &&
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E->isImplicit())
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return { true, E };
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if (auto *DRE = dyn_cast<DeclRefExpr>(E)) {
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if (auto *module = dyn_cast<ModuleDecl>(DRE->getDecl())) {
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if (!passReference(ModuleEntity(module),
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std::make_pair(module->getName(), E->getLoc())))
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return { false, nullptr };
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} else if (!passReference(DRE->getDecl(), DRE->getType(),
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DRE->getNameLoc(),
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ReferenceMetaData(getReferenceKind(Parent.getAsExpr(), DRE),
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OpAccess))) {
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return { false, nullptr };
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}
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} else if (auto *MRE = dyn_cast<MemberRefExpr>(E)) {
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{
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// This could be made more accurate if the member is nonmutating,
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// or whatever.
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Optional<AccessKind> NewOpAccess;
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if (OpAccess) {
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if (*OpAccess == AccessKind::Write)
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NewOpAccess = AccessKind::ReadWrite;
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else
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NewOpAccess = OpAccess;
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}
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llvm::SaveAndRestore<Optional<AccessKind>>
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C(this->OpAccess, NewOpAccess);
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// Visit in source order.
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if (!MRE->getBase()->walk(*this))
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return { false, nullptr };
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}
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if (!passReference(MRE->getMember().getDecl(), MRE->getType(),
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MRE->getNameLoc(),
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ReferenceMetaData(SemaReferenceKind::DeclMemberRef,
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OpAccess)))
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return { false, nullptr };
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// We already visited the children.
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto OtherCtorE = dyn_cast<OtherConstructorDeclRefExpr>(E)) {
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if (!passReference(OtherCtorE->getDecl(), OtherCtorE->getType(),
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OtherCtorE->getConstructorLoc(),
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ReferenceMetaData(SemaReferenceKind::DeclConstructorRef,
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OpAccess)))
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return { false, nullptr };
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} else if (auto *SE = dyn_cast<SubscriptExpr>(E)) {
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// Visit in source order.
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if (!SE->getBase()->walk(*this))
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return { false, nullptr };
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ValueDecl *SubscrD = nullptr;
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if (SE->hasDecl())
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SubscrD = SE->getDecl().getDecl();
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ReferenceMetaData data(SemaReferenceKind::SubscriptRef, OpAccess,
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SE->isImplicit());
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if (SubscrD) {
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if (!passSubscriptReference(SubscrD, E->getLoc(), data, true))
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return { false, nullptr };
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}
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if (!SE->getIndex()->walk(*this))
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return { false, nullptr };
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if (SubscrD) {
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if (!passSubscriptReference(SubscrD, E->getEndLoc(), data, false))
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return { false, nullptr };
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}
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// We already visited the children.
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto *KPE = dyn_cast<KeyPathExpr>(E)) {
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for (auto &component : KPE->getComponents()) {
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switch (component.getKind()) {
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case KeyPathExpr::Component::Kind::Property:
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case KeyPathExpr::Component::Kind::Subscript: {
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auto *decl = component.getDeclRef().getDecl();
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auto loc = component.getLoc();
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SourceRange range(loc, loc);
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passReference(decl, component.getComponentType(), loc, range,
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ReferenceMetaData(
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(isa<SubscriptDecl>(decl)
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? SemaReferenceKind::SubscriptRef
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: SemaReferenceKind::DeclMemberRef),
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OpAccess));
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break;
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}
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case KeyPathExpr::Component::Kind::TupleElement:
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case KeyPathExpr::Component::Kind::Invalid:
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case KeyPathExpr::Component::Kind::UnresolvedProperty:
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case KeyPathExpr::Component::Kind::UnresolvedSubscript:
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case KeyPathExpr::Component::Kind::OptionalChain:
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case KeyPathExpr::Component::Kind::OptionalWrap:
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case KeyPathExpr::Component::Kind::OptionalForce:
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case KeyPathExpr::Component::Kind::Identity:
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break;
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}
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}
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} else if (auto *BinE = dyn_cast<BinaryExpr>(E)) {
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// Visit in source order.
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if (!BinE->getArg()->getElement(0)->walk(*this))
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return { false, nullptr };
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if (!BinE->getFn()->walk(*this))
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return { false, nullptr };
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if (!BinE->getArg()->getElement(1)->walk(*this))
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return { false, nullptr };
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// We already visited the children.
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto TupleE = dyn_cast<TupleExpr>(E)) {
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if (auto CallE = dyn_cast_or_null<CallExpr>(Parent.getAsExpr())) {
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if (!passCallArgNames(CallE->getFn(), TupleE))
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return { false, nullptr };
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}
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} else if (auto IOE = dyn_cast<InOutExpr>(E)) {
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llvm::SaveAndRestore<Optional<AccessKind>>
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C(this->OpAccess, AccessKind::ReadWrite);
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if (!IOE->getSubExpr()->walk(*this))
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return { false, nullptr };
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// We already visited the children.
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto LE = dyn_cast<LoadExpr>(E)) {
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llvm::SaveAndRestore<Optional<AccessKind>>
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C(this->OpAccess, AccessKind::Read);
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if (!LE->getSubExpr()->walk(*this))
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return { false, nullptr };
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// We already visited the children.
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto AE = dyn_cast<AssignExpr>(E)) {
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{
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llvm::SaveAndRestore<Optional<AccessKind>>
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C(this->OpAccess, AccessKind::Write);
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if (AE->getDest() && !AE->getDest()->walk(*this))
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return { false, nullptr };
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}
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if (AE->getSrc() && !AE->getSrc()->walk(*this))
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return { false, nullptr };
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// We already visited the children.
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto OEE = dyn_cast<OpenExistentialExpr>(E)) {
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// Record opaque value.
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OpaqueValueMap[OEE->getOpaqueValue()] = OEE->getExistentialValue();
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SWIFT_DEFER {
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OpaqueValueMap.erase(OEE->getOpaqueValue());
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};
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if (!OEE->getSubExpr()->walk(*this))
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return { false, nullptr };
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto MTEE = dyn_cast<MakeTemporarilyEscapableExpr>(E)) {
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// Manually walk to original arguments in order. We don't handle
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// OpaqueValueExpr here.
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// Original non-escaping closure.
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if (!MTEE->getNonescapingClosureValue()->walk(*this))
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return { false, nullptr };
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// Body, which is called by synthesized CallExpr.
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auto *callExpr = cast<CallExpr>(MTEE->getSubExpr());
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if (!callExpr->getFn()->walk(*this))
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return { false, nullptr };
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto CUCE = dyn_cast<CollectionUpcastConversionExpr>(E)) {
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// Ignore conversion expressions. We don't handle OpaqueValueExpr here
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// because it's only in conversion expressions. Instead, just walk into
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// sub expression.
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if (!CUCE->getSubExpr()->walk(*this))
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return { false, nullptr };
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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} else if (auto OVE = dyn_cast<OpaqueValueExpr>(E)) {
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// Walk into mapped value.
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auto value = OpaqueValueMap.find(OVE);
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if (value != OpaqueValueMap.end()) {
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if (!value->second->walk(*this))
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return { false, nullptr };
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if (!walkToExprPost(E))
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return { false, nullptr };
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return { false, E };
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}
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}
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return { true, E };
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}
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bool SemaAnnotator::walkToTypeReprPre(TypeRepr *T) {
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if (isDone())
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return false;
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if (auto IdT = dyn_cast<ComponentIdentTypeRepr>(T)) {
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if (ValueDecl *VD = IdT->getBoundDecl()) {
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if (auto *ModD = dyn_cast<ModuleDecl>(VD))
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return passReference(ModD, std::make_pair(IdT->getIdentifier(),
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|
IdT->getIdLoc()));
|
|
|
|
return passReference(VD, Type(), DeclNameLoc(IdT->getIdLoc()),
|
|
ReferenceMetaData(SemaReferenceKind::TypeRef, None));
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
Expr *SemaAnnotator::walkToExprPost(Expr *E) {
|
|
if (isa<ConstructorRefCallExpr>(E)) {
|
|
assert(CtorRefs.back() == E);
|
|
CtorRefs.pop_back();
|
|
}
|
|
|
|
bool Continue = SEWalker.walkToExprPost(E);
|
|
if (!Continue)
|
|
Cancelled = true;
|
|
return Continue ? E : nullptr;
|
|
}
|
|
|
|
bool SemaAnnotator::walkToTypeReprPost(TypeRepr *T) {
|
|
return !isDone();
|
|
}
|
|
|
|
std::pair<bool, Pattern *> SemaAnnotator::walkToPatternPre(Pattern *P) {
|
|
if (P->isImplicit())
|
|
return { true, P };
|
|
|
|
if (auto *EP = dyn_cast<EnumElementPattern>(P)) {
|
|
auto *Element = EP->getElementDecl();
|
|
if (!Element)
|
|
return { true, P };
|
|
Type T = EP->hasType() ? EP->getType() : Type();
|
|
return { passReference(Element, T, DeclNameLoc(EP->getLoc()),
|
|
ReferenceMetaData(SemaReferenceKind::EnumElementRef, None)), P };
|
|
}
|
|
|
|
auto *TP = dyn_cast<TypedPattern>(P);
|
|
if (!TP || !TP->isPropagatedType())
|
|
return { true, P };
|
|
|
|
// If the typed pattern was propagated from somewhere, just walk the
|
|
// subpattern. The type will be walked as a part of another TypedPattern.
|
|
TP->getSubPattern()->walk(*this);
|
|
return { false, P };
|
|
}
|
|
|
|
bool SemaAnnotator::handleCustomAttributes(Decl *D) {
|
|
// CustomAttrs of non-param VarDecls are handled when this method is called
|
|
// on their containing PatternBindingDecls (see below).
|
|
if (isa<VarDecl>(D) && !isa<ParamDecl>(D))
|
|
return true;
|
|
|
|
if (auto *PBD = dyn_cast<PatternBindingDecl>(D)) {
|
|
if (auto *SingleVar = PBD->getSingleVar()) {
|
|
D = SingleVar;
|
|
} else {
|
|
return true;
|
|
}
|
|
}
|
|
for (auto *customAttr : D->getAttrs().getAttributes<CustomAttr, true>()) {
|
|
if (auto *Repr = customAttr->getTypeLoc().getTypeRepr()) {
|
|
if (!Repr->walk(*this))
|
|
return false;
|
|
}
|
|
if (auto *SemaInit = customAttr->getSemanticInit()) {
|
|
if (!SemaInit->isImplicit()) {
|
|
assert(customAttr->getArg());
|
|
if (!SemaInit->walk(*this))
|
|
return false;
|
|
// Don't walk this again via the associated PatternBindingDecl's
|
|
// initializer
|
|
ExprsToSkip.insert(SemaInit);
|
|
}
|
|
} else if (auto *Arg = customAttr->getArg()) {
|
|
if (!Arg->walk(*this))
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool SemaAnnotator::handleImports(ImportDecl *Import) {
|
|
auto Mod = Import->getModule();
|
|
if (!Mod)
|
|
return true;
|
|
|
|
auto ClangMod = Mod->findUnderlyingClangModule();
|
|
if (ClangMod && ClangMod->isSubModule()) {
|
|
if (!passModulePathElements(Import->getModulePath(), ClangMod))
|
|
return false;
|
|
} else {
|
|
if (!passReference(Mod, Import->getModulePath().front()))
|
|
return false;
|
|
}
|
|
|
|
auto Decls = Import->getDecls();
|
|
if (Decls.size() == 1) {
|
|
// FIXME: ImportDecl should store a DeclNameLoc.
|
|
// FIXME: Handle overloaded funcs too by passing a reference for each?
|
|
if (!passReference(Decls.front(), Type(), DeclNameLoc(Import->getEndLoc()),
|
|
ReferenceMetaData(SemaReferenceKind::DeclRef, None)))
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool SemaAnnotator::passModulePathElements(
|
|
ArrayRef<ImportDecl::AccessPathElement> Path,
|
|
const clang::Module *ClangMod) {
|
|
|
|
if (Path.empty() || !ClangMod)
|
|
return true;
|
|
|
|
if (!passModulePathElements(Path.drop_back(1), ClangMod->Parent))
|
|
return false;
|
|
|
|
return passReference(ClangMod, Path.back());
|
|
}
|
|
|
|
bool SemaAnnotator::passSubscriptReference(ValueDecl *D, SourceLoc Loc,
|
|
ReferenceMetaData Data,
|
|
bool IsOpenBracket) {
|
|
CharSourceRange Range = Loc.isValid()
|
|
? CharSourceRange(Loc, 1)
|
|
: CharSourceRange();
|
|
|
|
bool Continue =
|
|
SEWalker.visitSubscriptReference(D, Range, Data, IsOpenBracket);
|
|
if (!Continue)
|
|
Cancelled = true;
|
|
return Continue;
|
|
}
|
|
|
|
bool SemaAnnotator::
|
|
passReference(ValueDecl *D, Type Ty, DeclNameLoc Loc, ReferenceMetaData Data) {
|
|
return passReference(D, Ty, Loc.getBaseNameLoc(), Loc.getSourceRange(), Data);
|
|
}
|
|
|
|
bool SemaAnnotator::
|
|
passReference(ValueDecl *D, Type Ty, SourceLoc BaseNameLoc, SourceRange Range,
|
|
ReferenceMetaData Data) {
|
|
TypeDecl *CtorTyRef = nullptr;
|
|
ExtensionDecl *ExtDecl = nullptr;
|
|
|
|
if (auto *TD = dyn_cast<TypeDecl>(D)) {
|
|
if (!CtorRefs.empty() && BaseNameLoc.isValid()) {
|
|
Expr *Fn = CtorRefs.back()->getFn();
|
|
if (Fn->getLoc() == BaseNameLoc) {
|
|
D = extractDecl(Fn);
|
|
CtorTyRef = TD;
|
|
}
|
|
}
|
|
|
|
if (!ExtDecls.empty() && BaseNameLoc.isValid()) {
|
|
auto ExtTyLoc = ExtDecls.back()->getExtendedTypeLoc().getLoc();
|
|
if (ExtTyLoc.isValid() && ExtTyLoc == BaseNameLoc) {
|
|
ExtDecl = ExtDecls.back();
|
|
}
|
|
}
|
|
}
|
|
|
|
CharSourceRange CharRange =
|
|
Lexer::getCharSourceRangeFromSourceRange(D->getASTContext().SourceMgr,
|
|
Range);
|
|
bool Continue = SEWalker.visitDeclReference(D, CharRange, CtorTyRef, ExtDecl,
|
|
Ty, Data);
|
|
if (!Continue)
|
|
Cancelled = true;
|
|
return Continue;
|
|
}
|
|
|
|
bool SemaAnnotator::passReference(ModuleEntity Mod,
|
|
std::pair<Identifier, SourceLoc> IdLoc) {
|
|
if (IdLoc.second.isInvalid())
|
|
return true;
|
|
unsigned NameLen = IdLoc.first.getLength();
|
|
CharSourceRange Range{ IdLoc.second, NameLen };
|
|
bool Continue = SEWalker.visitModuleReference(Mod, Range);
|
|
if (!Continue)
|
|
Cancelled = true;
|
|
return Continue;
|
|
}
|
|
|
|
bool SemaAnnotator::passCallArgNames(Expr *Fn, TupleExpr *TupleE) {
|
|
ValueDecl *D = extractDecl(Fn);
|
|
if (!D)
|
|
return true; // continue.
|
|
|
|
ArrayRef<Identifier> ArgNames = TupleE->getElementNames();
|
|
ArrayRef<SourceLoc> ArgLocs = TupleE->getElementNameLocs();
|
|
for (auto i : indices(ArgNames)) {
|
|
Identifier Name = ArgNames[i];
|
|
if (Name.empty())
|
|
continue;
|
|
|
|
SourceLoc Loc = ArgLocs[i];
|
|
if (Loc.isInvalid())
|
|
continue;
|
|
|
|
CharSourceRange Range{ Loc, Name.getLength() };
|
|
bool Continue = SEWalker.visitCallArgName(Name, Range, D);
|
|
if (!Continue) {
|
|
Cancelled = true;
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool SemaAnnotator::shouldIgnore(Decl *D, bool &ShouldVisitChildren) {
|
|
if (D->isImplicit() &&
|
|
!isa<PatternBindingDecl>(D) &&
|
|
!isa<ConstructorDecl>(D)) {
|
|
ShouldVisitChildren = false;
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(SourceFile &SrcFile) {
|
|
SemaAnnotator Annotator(*this);
|
|
return SrcFile.walk(Annotator);
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(ModuleDecl &Mod) {
|
|
SemaAnnotator Annotator(*this);
|
|
return Mod.walk(Annotator);
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(Stmt *S) {
|
|
SemaAnnotator Annotator(*this);
|
|
return S->walk(Annotator);
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(Expr *E) {
|
|
SemaAnnotator Annotator(*this);
|
|
return E->walk(Annotator);
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(Decl *D) {
|
|
SemaAnnotator Annotator(*this);
|
|
return D->walk(Annotator);
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(DeclContext *DC) {
|
|
SemaAnnotator Annotator(*this);
|
|
return DC->walkContext(Annotator);
|
|
}
|
|
|
|
bool SourceEntityWalker::walk(ASTNode N) {
|
|
if (auto *E = N.dyn_cast<Expr*>())
|
|
return walk(E);
|
|
if (auto *S = N.dyn_cast<Stmt*>())
|
|
return walk(S);
|
|
if (auto *D = N.dyn_cast<Decl*>())
|
|
return walk(D);
|
|
|
|
llvm_unreachable("unsupported AST node");
|
|
}
|
|
|
|
bool SourceEntityWalker::visitDeclReference(ValueDecl *D, CharSourceRange Range,
|
|
TypeDecl *CtorTyRef,
|
|
ExtensionDecl *ExtTyRef, Type T,
|
|
ReferenceMetaData Data) {
|
|
return true;
|
|
}
|
|
|
|
bool SourceEntityWalker::visitSubscriptReference(ValueDecl *D,
|
|
CharSourceRange Range,
|
|
ReferenceMetaData Data,
|
|
bool IsOpenBracket) {
|
|
// Most of the clients treat subscript reference the same way as a
|
|
// regular reference when called on the open bracket and
|
|
// ignore the closing one.
|
|
return IsOpenBracket
|
|
? visitDeclReference(D, Range, nullptr, nullptr, Type(), Data)
|
|
: true;
|
|
}
|
|
|
|
bool SourceEntityWalker::visitCallArgName(Identifier Name,
|
|
CharSourceRange Range,
|
|
ValueDecl *D) {
|
|
return true;
|
|
}
|
|
|
|
bool SourceEntityWalker::
|
|
visitDeclarationArgumentName(Identifier Name, SourceLoc Start, ValueDecl *D) {
|
|
return true;
|
|
}
|
|
|
|
bool SourceEntityWalker::visitModuleReference(ModuleEntity Mod,
|
|
CharSourceRange Range) {
|
|
return true;
|
|
}
|
|
|
|
void SourceEntityWalker::anchor() {}
|