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492f5cd35a
Replace `NameOfType foo = dyn_cast<NameOfType>(bar)` with DRY version `auto foo = dyn_cast<NameOfType>(bar)`. The DRY auto version is by far the dominant form already used in the repo, so this PR merely brings the exceptional cases (redundant repetition form) in line with the dominant form (auto form). See the [C++ Core Guidelines](https://github.com/isocpp/CppCoreGuidelines/blob/master/CppCoreGuidelines.md#es11-use-auto-to-avoid-redundant-repetition-of-type-names) for a general discussion on why to use `auto` to avoid redundant repetition of type names.
97 lines
2.7 KiB
C++
97 lines
2.7 KiB
C++
//===--- InstrumenterSupport.cpp - Instrumenter Support -------------------===//
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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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//
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// This file implements the supporting functions for writing instrumenters of
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// the Swift AST.
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//
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//===----------------------------------------------------------------------===//
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#include "InstrumenterSupport.h"
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using namespace swift;
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using namespace swift::instrumenter_support;
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namespace {
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class ErrorGatherer : public DiagnosticConsumer {
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private:
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bool error = false;
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DiagnosticEngine &diags;
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public:
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ErrorGatherer(DiagnosticEngine &diags) : diags(diags) {
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diags.addConsumer(*this);
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}
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~ErrorGatherer() override { diags.takeConsumers(); }
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void handleDiagnostic(SourceManager &SM, SourceLoc Loc,
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DiagnosticKind Kind,
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StringRef FormatString,
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ArrayRef<DiagnosticArgument> FormatArgs,
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const DiagnosticInfo &Info) override {
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if (Kind == swift::DiagnosticKind::Error) {
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error = true;
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}
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DiagnosticEngine::formatDiagnosticText(llvm::errs(), FormatString,
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FormatArgs);
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llvm::errs() << "\n";
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}
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bool hadError() { return error; }
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};
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class ErrorFinder : public ASTWalker {
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bool error = false;
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public:
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ErrorFinder() {}
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std::pair<bool, Expr *> walkToExprPre(Expr *E) override {
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if (isa<ErrorExpr>(E) || !E->getType() || E->getType()->hasError()) {
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error = true;
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return {false, E};
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}
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return {true, E};
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}
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bool walkToDeclPre(Decl *D) override {
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if (auto *VD = dyn_cast<ValueDecl>(D)) {
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if (!VD->hasInterfaceType() || VD->getInterfaceType()->hasError()) {
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error = true;
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return false;
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}
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}
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return true;
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}
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bool hadError() { return error; }
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};
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} // end anonymous namespace
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void InstrumenterBase::anchor() {}
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bool InstrumenterBase::doTypeCheckImpl(ASTContext &Ctx, DeclContext *DC,
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Expr * &parsedExpr) {
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DiagnosticEngine diags(Ctx.SourceMgr);
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ErrorGatherer errorGatherer(diags);
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TypeChecker TC(Ctx, diags);
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TC.typeCheckExpression(parsedExpr, DC);
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if (parsedExpr) {
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ErrorFinder errorFinder;
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parsedExpr->walk(errorFinder);
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if (!errorFinder.hadError() && !errorGatherer.hadError()) {
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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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