2946cd7010
to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
//===- unittest/AST/ExternalASTSourceTest.cpp -----------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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//
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// This file contains tests for Clang's ExternalASTSource.
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//
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//===----------------------------------------------------------------------===//
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#include "clang/AST/ASTConsumer.h"
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#include "clang/AST/ASTContext.h"
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#include "clang/AST/ExternalASTSource.h"
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#include "clang/Frontend/CompilerInstance.h"
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#include "clang/Frontend/CompilerInvocation.h"
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#include "clang/Frontend/FrontendActions.h"
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#include "clang/Lex/PreprocessorOptions.h"
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#include "gtest/gtest.h"
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using namespace clang;
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using namespace llvm;
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class TestFrontendAction : public ASTFrontendAction {
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public:
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TestFrontendAction(ExternalASTSource *Source) : Source(Source) {}
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private:
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void ExecuteAction() override {
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getCompilerInstance().getASTContext().setExternalSource(Source);
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getCompilerInstance().getASTContext().getTranslationUnitDecl()
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->setHasExternalVisibleStorage();
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return ASTFrontendAction::ExecuteAction();
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}
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std::unique_ptr<ASTConsumer> CreateASTConsumer(CompilerInstance &CI,
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StringRef InFile) override {
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return llvm::make_unique<ASTConsumer>();
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}
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IntrusiveRefCntPtr<ExternalASTSource> Source;
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};
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bool testExternalASTSource(ExternalASTSource *Source,
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StringRef FileContents) {
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CompilerInstance Compiler;
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Compiler.createDiagnostics();
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auto Invocation = std::make_shared<CompilerInvocation>();
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Invocation->getPreprocessorOpts().addRemappedFile(
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"test.cc", MemoryBuffer::getMemBuffer(FileContents).release());
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const char *Args[] = { "test.cc" };
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CompilerInvocation::CreateFromArgs(*Invocation, Args,
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Args + array_lengthof(Args),
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Compiler.getDiagnostics());
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Compiler.setInvocation(std::move(Invocation));
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TestFrontendAction Action(Source);
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return Compiler.ExecuteAction(Action);
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}
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// Ensure that a failed name lookup into an external source only occurs once.
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TEST(ExternalASTSourceTest, FailedLookupOccursOnce) {
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struct TestSource : ExternalASTSource {
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TestSource(unsigned &Calls) : Calls(Calls) {}
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bool FindExternalVisibleDeclsByName(const DeclContext *,
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DeclarationName Name) override {
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if (Name.getAsString() == "j")
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++Calls;
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return false;
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}
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unsigned &Calls;
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};
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unsigned Calls = 0;
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ASSERT_TRUE(testExternalASTSource(new TestSource(Calls), "int j, k = j;"));
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EXPECT_EQ(1u, Calls);
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}
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