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7c10c61a92
Take away the type checker constructor that allows one to provide a diagnostic engine different from the one associated with the ASTContext. It doesn’t actually work to suppress diagnostics. Switch all clients over to the constructor that takes only an ASTContext. Introduce the DiagnosticSuppression RAII class so clients that want to suppress diagnostics can suppress *all* diagnostics. Use it where we were previously suppressing diagnostics.
98 lines
2.7 KiB
C++
98 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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#include "swift/AST/DiagnosticSuppression.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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DiagnosticSuppression suppression(Ctx.Diags);
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ErrorGatherer errorGatherer(Ctx.Diags);
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TypeChecker TC(Ctx);
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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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