165 lines
6.2 KiB
C++
165 lines
6.2 KiB
C++
//===- unittest/Tooling/ASTMatchersTest.h - Matcher tests helpers ------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_UNITTESTS_AST_MATCHERS_AST_MATCHERS_TEST_H
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#define LLVM_CLANG_UNITTESTS_AST_MATCHERS_AST_MATCHERS_TEST_H
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#include "clang/ASTMatchers/ASTMatchFinder.h"
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#include "clang/Frontend/ASTUnit.h"
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#include "clang/Tooling/Tooling.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace ast_matchers {
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using clang::tooling::buildASTFromCodeWithArgs;
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using clang::tooling::newFrontendActionFactory;
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using clang::tooling::runToolOnCodeWithArgs;
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using clang::tooling::FrontendActionFactory;
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class BoundNodesCallback {
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public:
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virtual ~BoundNodesCallback() {}
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virtual bool run(const BoundNodes *BoundNodes) = 0;
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virtual bool run(const BoundNodes *BoundNodes, ASTContext *Context) = 0;
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virtual void onEndOfTranslationUnit() {}
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};
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// If 'FindResultVerifier' is not NULL, sets *Verified to the result of
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// running 'FindResultVerifier' with the bound nodes as argument.
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// If 'FindResultVerifier' is NULL, sets *Verified to true when Run is called.
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class VerifyMatch : public MatchFinder::MatchCallback {
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public:
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VerifyMatch(BoundNodesCallback *FindResultVerifier, bool *Verified)
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: Verified(Verified), FindResultReviewer(FindResultVerifier) {}
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virtual void run(const MatchFinder::MatchResult &Result) {
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if (FindResultReviewer != NULL) {
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*Verified |= FindResultReviewer->run(&Result.Nodes, Result.Context);
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} else {
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*Verified = true;
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}
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}
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void onEndOfTranslationUnit() LLVM_OVERRIDE {
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if (FindResultReviewer)
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FindResultReviewer->onEndOfTranslationUnit();
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}
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private:
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bool *const Verified;
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BoundNodesCallback *const FindResultReviewer;
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};
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template <typename T>
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testing::AssertionResult matchesConditionally(const std::string &Code,
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const T &AMatcher,
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bool ExpectMatch,
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llvm::StringRef CompileArg) {
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bool Found = false, DynamicFound = false;
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MatchFinder Finder;
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Finder.addMatcher(AMatcher, new VerifyMatch(0, &Found));
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if (!Finder.addDynamicMatcher(AMatcher, new VerifyMatch(0, &DynamicFound)))
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return testing::AssertionFailure() << "Could not add dynamic matcher";
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OwningPtr<FrontendActionFactory> Factory(newFrontendActionFactory(&Finder));
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// Some tests use typeof, which is a gnu extension.
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std::vector<std::string> Args(1, CompileArg);
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if (!runToolOnCodeWithArgs(Factory->create(), Code, Args)) {
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return testing::AssertionFailure() << "Parsing error in \"" << Code << "\"";
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}
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if (Found != DynamicFound) {
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return testing::AssertionFailure() << "Dynamic match result ("
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<< DynamicFound
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<< ") does not match static result ("
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<< Found << ")";
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}
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if (!Found && ExpectMatch) {
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return testing::AssertionFailure()
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<< "Could not find match in \"" << Code << "\"";
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} else if (Found && !ExpectMatch) {
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return testing::AssertionFailure()
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<< "Found unexpected match in \"" << Code << "\"";
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}
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return testing::AssertionSuccess();
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}
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template <typename T>
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testing::AssertionResult matches(const std::string &Code, const T &AMatcher) {
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return matchesConditionally(Code, AMatcher, true, "-std=c++11");
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}
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template <typename T>
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testing::AssertionResult notMatches(const std::string &Code,
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const T &AMatcher) {
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return matchesConditionally(Code, AMatcher, false, "-std=c++11");
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}
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template <typename T>
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testing::AssertionResult
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matchAndVerifyResultConditionally(const std::string &Code, const T &AMatcher,
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BoundNodesCallback *FindResultVerifier,
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bool ExpectResult) {
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OwningPtr<BoundNodesCallback> ScopedVerifier(FindResultVerifier);
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bool VerifiedResult = false;
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MatchFinder Finder;
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Finder.addMatcher(
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AMatcher, new VerifyMatch(FindResultVerifier, &VerifiedResult));
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OwningPtr<FrontendActionFactory> Factory(newFrontendActionFactory(&Finder));
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// Some tests use typeof, which is a gnu extension.
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std::vector<std::string> Args(1, "-std=gnu++98");
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if (!runToolOnCodeWithArgs(Factory->create(), Code, Args)) {
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return testing::AssertionFailure() << "Parsing error in \"" << Code << "\"";
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}
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if (!VerifiedResult && ExpectResult) {
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return testing::AssertionFailure()
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<< "Could not verify result in \"" << Code << "\"";
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} else if (VerifiedResult && !ExpectResult) {
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return testing::AssertionFailure()
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<< "Verified unexpected result in \"" << Code << "\"";
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}
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VerifiedResult = false;
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OwningPtr<ASTUnit> AST(buildASTFromCodeWithArgs(Code, Args));
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if (!AST.get())
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return testing::AssertionFailure() << "Parsing error in \"" << Code
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<< "\" while building AST";
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Finder.matchAST(AST->getASTContext());
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if (!VerifiedResult && ExpectResult) {
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return testing::AssertionFailure()
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<< "Could not verify result in \"" << Code << "\" with AST";
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} else if (VerifiedResult && !ExpectResult) {
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return testing::AssertionFailure()
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<< "Verified unexpected result in \"" << Code << "\" with AST";
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}
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return testing::AssertionSuccess();
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}
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// FIXME: Find better names for these functions (or document what they
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// do more precisely).
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template <typename T>
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testing::AssertionResult
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matchAndVerifyResultTrue(const std::string &Code, const T &AMatcher,
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BoundNodesCallback *FindResultVerifier) {
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return matchAndVerifyResultConditionally(
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Code, AMatcher, FindResultVerifier, true);
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}
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template <typename T>
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testing::AssertionResult
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matchAndVerifyResultFalse(const std::string &Code, const T &AMatcher,
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BoundNodesCallback *FindResultVerifier) {
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return matchAndVerifyResultConditionally(
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Code, AMatcher, FindResultVerifier, false);
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}
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} // end namespace ast_matchers
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} // end namespace clang
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#endif // LLVM_CLANG_UNITTESTS_AST_MATCHERS_AST_MATCHERS_TEST_H
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