/
ASTImporterTest.cpp
5907 lines (5210 loc) · 200 KB
/
ASTImporterTest.cpp
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//===- unittest/AST/ASTImporterTest.cpp - AST node import test ------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// Tests for the correct import of AST nodes from one AST context to another.
//
//===----------------------------------------------------------------------===//
#include "clang/ASTMatchers/ASTMatchers.h"
#include "llvm/ADT/StringMap.h"
#include "clang/AST/DeclContextInternals.h"
#include "gtest/gtest.h"
#include "ASTImporterFixtures.h"
#include "MatchVerifier.h"
namespace clang {
namespace ast_matchers {
using internal::Matcher;
using internal::BindableMatcher;
using llvm::StringMap;
// Base class for those tests which use the family of `testImport` functions.
class TestImportBase : public CompilerOptionSpecificTest,
public ::testing::WithParamInterface<ArgVector> {
template <typename NodeType>
llvm::Expected<NodeType> importNode(ASTUnit *From, ASTUnit *To,
ASTImporter &Importer, NodeType Node) {
ASTContext &ToCtx = To->getASTContext();
// Add 'From' file to virtual file system so importer can 'find' it
// while importing SourceLocations. It is safe to add same file multiple
// times - it just isn't replaced.
StringRef FromFileName = From->getMainFileName();
createVirtualFileIfNeeded(To, FromFileName,
From->getBufferForFile(FromFileName));
auto Imported = Importer.Import(Node);
if (Imported) {
// This should dump source locations and assert if some source locations
// were not imported.
SmallString<1024> ImportChecker;
llvm::raw_svector_ostream ToNothing(ImportChecker);
ToCtx.getTranslationUnitDecl()->print(ToNothing);
// This traverses the AST to catch certain bugs like poorly or not
// implemented subtrees.
(*Imported)->dump(ToNothing);
}
return Imported;
}
template <typename NodeType>
testing::AssertionResult
testImport(const std::string &FromCode, const ArgVector &FromArgs,
const std::string &ToCode, const ArgVector &ToArgs,
MatchVerifier<NodeType> &Verifier,
const BindableMatcher<NodeType> &SearchMatcher,
const BindableMatcher<NodeType> &VerificationMatcher) {
const char *const InputFileName = "input.cc";
const char *const OutputFileName = "output.cc";
std::unique_ptr<ASTUnit> FromAST = tooling::buildASTFromCodeWithArgs(
FromCode, FromArgs, InputFileName),
ToAST = tooling::buildASTFromCodeWithArgs(
ToCode, ToArgs, OutputFileName);
ASTContext &FromCtx = FromAST->getASTContext(),
&ToCtx = ToAST->getASTContext();
ASTImporter Importer(ToCtx, ToAST->getFileManager(), FromCtx,
FromAST->getFileManager(), false);
auto FoundNodes = match(SearchMatcher, FromCtx);
if (FoundNodes.size() != 1)
return testing::AssertionFailure()
<< "Multiple potential nodes were found!";
auto ToImport = selectFirst<NodeType>(DeclToImportID, FoundNodes);
if (!ToImport)
return testing::AssertionFailure() << "Node type mismatch!";
// Sanity check: the node being imported should match in the same way as
// the result node.
BindableMatcher<NodeType> WrapperMatcher(VerificationMatcher);
EXPECT_TRUE(Verifier.match(ToImport, WrapperMatcher));
auto Imported = importNode(FromAST.get(), ToAST.get(), Importer, ToImport);
if (!Imported) {
std::string ErrorText;
handleAllErrors(
Imported.takeError(),
[&ErrorText](const ImportError &Err) { ErrorText = Err.message(); });
return testing::AssertionFailure()
<< "Import failed, error: \"" << ErrorText << "\"!";
}
return Verifier.match(*Imported, WrapperMatcher);
}
template <typename NodeType>
testing::AssertionResult
testImport(const std::string &FromCode, const ArgVector &FromArgs,
const std::string &ToCode, const ArgVector &ToArgs,
MatchVerifier<NodeType> &Verifier,
const BindableMatcher<NodeType> &VerificationMatcher) {
return testImport(
FromCode, FromArgs, ToCode, ToArgs, Verifier,
translationUnitDecl(
has(namedDecl(hasName(DeclToImportID)).bind(DeclToImportID))),
VerificationMatcher);
}
protected:
ArgVector getExtraArgs() const override { return GetParam(); }
public:
/// Test how AST node named "declToImport" located in the translation unit
/// of "FromCode" virtual file is imported to "ToCode" virtual file.
/// The verification is done by running AMatcher over the imported node.
template <typename NodeType, typename MatcherType>
void testImport(const std::string &FromCode, Language FromLang,
const std::string &ToCode, Language ToLang,
MatchVerifier<NodeType> &Verifier,
const MatcherType &AMatcher) {
ArgVector FromArgs = getArgVectorForLanguage(FromLang),
ToArgs = getArgVectorForLanguage(ToLang);
EXPECT_TRUE(
testImport(FromCode, FromArgs, ToCode, ToArgs, Verifier, AMatcher));
}
struct ImportAction {
StringRef FromFilename;
StringRef ToFilename;
// FIXME: Generalize this to support other node kinds.
BindableMatcher<Decl> ImportPredicate;
ImportAction(StringRef FromFilename, StringRef ToFilename,
DeclarationMatcher ImportPredicate)
: FromFilename(FromFilename), ToFilename(ToFilename),
ImportPredicate(ImportPredicate) {}
ImportAction(StringRef FromFilename, StringRef ToFilename,
const std::string &DeclName)
: FromFilename(FromFilename), ToFilename(ToFilename),
ImportPredicate(namedDecl(hasName(DeclName))) {}
};
using SingleASTUnit = std::unique_ptr<ASTUnit>;
using AllASTUnits = StringMap<SingleASTUnit>;
struct CodeEntry {
std::string CodeSample;
Language Lang;
};
using CodeFiles = StringMap<CodeEntry>;
/// Builds an ASTUnit for one potential compile options set.
SingleASTUnit createASTUnit(StringRef FileName, const CodeEntry &CE) const {
ArgVector Args = getArgVectorForLanguage(CE.Lang);
auto AST = tooling::buildASTFromCodeWithArgs(CE.CodeSample, Args, FileName);
EXPECT_TRUE(AST.get());
return AST;
}
/// Test an arbitrary sequence of imports for a set of given in-memory files.
/// The verification is done by running VerificationMatcher against a
/// specified AST node inside of one of given files.
/// \param CodeSamples Map whose key is the file name and the value is the
/// file content.
/// \param ImportActions Sequence of imports. Each import in sequence
/// specifies "from file" and "to file" and a matcher that is used for
/// searching a declaration for import in "from file".
/// \param FileForFinalCheck Name of virtual file for which the final check is
/// applied.
/// \param FinalSelectPredicate Matcher that specifies the AST node in the
/// FileForFinalCheck for which the verification will be done.
/// \param VerificationMatcher Matcher that will be used for verification
/// after all imports in sequence are done.
void testImportSequence(const CodeFiles &CodeSamples,
const std::vector<ImportAction> &ImportActions,
StringRef FileForFinalCheck,
BindableMatcher<Decl> FinalSelectPredicate,
BindableMatcher<Decl> VerificationMatcher) {
AllASTUnits AllASTs;
using ImporterKey = std::pair<const ASTUnit *, const ASTUnit *>;
llvm::DenseMap<ImporterKey, std::unique_ptr<ASTImporter>> Importers;
auto GenASTsIfNeeded = [this, &AllASTs, &CodeSamples](StringRef Filename) {
if (!AllASTs.count(Filename)) {
auto Found = CodeSamples.find(Filename);
assert(Found != CodeSamples.end() && "Wrong file for import!");
AllASTs[Filename] = createASTUnit(Filename, Found->getValue());
}
};
for (const ImportAction &Action : ImportActions) {
StringRef FromFile = Action.FromFilename, ToFile = Action.ToFilename;
GenASTsIfNeeded(FromFile);
GenASTsIfNeeded(ToFile);
ASTUnit *From = AllASTs[FromFile].get();
ASTUnit *To = AllASTs[ToFile].get();
// Create a new importer if needed.
std::unique_ptr<ASTImporter> &ImporterRef = Importers[{From, To}];
if (!ImporterRef)
ImporterRef.reset(new ASTImporter(
To->getASTContext(), To->getFileManager(), From->getASTContext(),
From->getFileManager(), false));
// Find the declaration and import it.
auto FoundDecl = match(Action.ImportPredicate.bind(DeclToImportID),
From->getASTContext());
EXPECT_TRUE(FoundDecl.size() == 1);
const Decl *ToImport = selectFirst<Decl>(DeclToImportID, FoundDecl);
auto Imported = importNode(From, To, *ImporterRef, ToImport);
EXPECT_TRUE(static_cast<bool>(Imported));
if (!Imported)
llvm::consumeError(Imported.takeError());
}
// Find the declaration and import it.
auto FoundDecl = match(FinalSelectPredicate.bind(DeclToVerifyID),
AllASTs[FileForFinalCheck]->getASTContext());
EXPECT_TRUE(FoundDecl.size() == 1);
const Decl *ToVerify = selectFirst<Decl>(DeclToVerifyID, FoundDecl);
MatchVerifier<Decl> Verifier;
EXPECT_TRUE(
Verifier.match(ToVerify, BindableMatcher<Decl>(VerificationMatcher)));
}
};
template <typename T> RecordDecl *getRecordDecl(T *D) {
auto *ET = cast<ElaboratedType>(D->getType().getTypePtr());
return cast<RecordType>(ET->getNamedType().getTypePtr())->getDecl();
}
static const RecordDecl *getRecordDeclOfFriend(FriendDecl *FD) {
QualType Ty = FD->getFriendType()->getType().getCanonicalType();
return cast<RecordType>(Ty)->getDecl();
}
struct ImportExpr : TestImportBase {};
struct ImportType : TestImportBase {};
struct ImportDecl : TestImportBase {};
struct CanonicalRedeclChain : ASTImporterOptionSpecificTestBase {};
TEST_P(CanonicalRedeclChain, ShouldBeConsequentWithMatchers) {
Decl *FromTU = getTuDecl("void f();", Lang_CXX);
auto Pattern = functionDecl(hasName("f"));
auto *D0 = FirstDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
auto Redecls = getCanonicalForwardRedeclChain(D0);
ASSERT_EQ(Redecls.size(), 1u);
EXPECT_EQ(D0, Redecls[0]);
}
TEST_P(CanonicalRedeclChain, ShouldBeConsequentWithMatchers2) {
Decl *FromTU = getTuDecl("void f(); void f(); void f();", Lang_CXX);
auto Pattern = functionDecl(hasName("f"));
auto *D0 = FirstDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
auto *D2 = LastDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
FunctionDecl *D1 = D2->getPreviousDecl();
auto Redecls = getCanonicalForwardRedeclChain(D0);
ASSERT_EQ(Redecls.size(), 3u);
EXPECT_EQ(D0, Redecls[0]);
EXPECT_EQ(D1, Redecls[1]);
EXPECT_EQ(D2, Redecls[2]);
}
TEST_P(CanonicalRedeclChain, ShouldBeSameForAllDeclInTheChain) {
Decl *FromTU = getTuDecl("void f(); void f(); void f();", Lang_CXX);
auto Pattern = functionDecl(hasName("f"));
auto *D0 = FirstDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
auto *D2 = LastDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
FunctionDecl *D1 = D2->getPreviousDecl();
auto RedeclsD0 = getCanonicalForwardRedeclChain(D0);
auto RedeclsD1 = getCanonicalForwardRedeclChain(D1);
auto RedeclsD2 = getCanonicalForwardRedeclChain(D2);
EXPECT_THAT(RedeclsD0, ::testing::ContainerEq(RedeclsD1));
EXPECT_THAT(RedeclsD1, ::testing::ContainerEq(RedeclsD2));
}
namespace {
struct RedirectingImporter : public ASTImporter {
using ASTImporter::ASTImporter;
protected:
llvm::Expected<Decl *> ImportImpl(Decl *FromD) override {
auto *ND = dyn_cast<NamedDecl>(FromD);
if (!ND || ND->getName() != "shouldNotBeImported")
return ASTImporter::ImportImpl(FromD);
for (Decl *D : getToContext().getTranslationUnitDecl()->decls()) {
if (auto *ND = dyn_cast<NamedDecl>(D))
if (ND->getName() == "realDecl") {
RegisterImportedDecl(FromD, ND);
return ND;
}
}
return ASTImporter::ImportImpl(FromD);
}
};
} // namespace
struct RedirectingImporterTest : ASTImporterOptionSpecificTestBase {
RedirectingImporterTest() {
Creator = [](ASTContext &ToContext, FileManager &ToFileManager,
ASTContext &FromContext, FileManager &FromFileManager,
bool MinimalImport,
const std::shared_ptr<ASTImporterSharedState> &SharedState) {
return new RedirectingImporter(ToContext, ToFileManager, FromContext,
FromFileManager, MinimalImport,
SharedState);
};
}
};
// Test that an ASTImporter subclass can intercept an import call.
TEST_P(RedirectingImporterTest, InterceptImport) {
Decl *From, *To;
std::tie(From, To) =
getImportedDecl("class shouldNotBeImported {};", Lang_CXX,
"class realDecl {};", Lang_CXX, "shouldNotBeImported");
auto *Imported = cast<CXXRecordDecl>(To);
EXPECT_EQ(Imported->getQualifiedNameAsString(), "realDecl");
// Make sure our importer prevented the importing of the decl.
auto *ToTU = Imported->getTranslationUnitDecl();
auto Pattern = functionDecl(hasName("shouldNotBeImported"));
unsigned count =
DeclCounterWithPredicate<CXXRecordDecl>().match(ToTU, Pattern);
EXPECT_EQ(0U, count);
}
// Test that when we indirectly import a declaration the custom ASTImporter
// is still intercepting the import.
TEST_P(RedirectingImporterTest, InterceptIndirectImport) {
Decl *From, *To;
std::tie(From, To) =
getImportedDecl("class shouldNotBeImported {};"
"class F { shouldNotBeImported f; };",
Lang_CXX, "class realDecl {};", Lang_CXX, "F");
// Make sure our ASTImporter prevented the importing of the decl.
auto *ToTU = To->getTranslationUnitDecl();
auto Pattern = functionDecl(hasName("shouldNotBeImported"));
unsigned count =
DeclCounterWithPredicate<CXXRecordDecl>().match(ToTU, Pattern);
EXPECT_EQ(0U, count);
}
struct ImportPath : ASTImporterOptionSpecificTestBase {
Decl *FromTU;
FunctionDecl *D0, *D1, *D2;
ImportPath() {
FromTU = getTuDecl("void f(); void f(); void f();", Lang_CXX);
auto Pattern = functionDecl(hasName("f"));
D0 = FirstDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
D2 = LastDeclMatcher<FunctionDecl>().match(FromTU, Pattern);
D1 = D2->getPreviousDecl();
}
};
TEST_P(ImportPath, Push) {
ASTImporter::ImportPathTy path;
path.push(D0);
EXPECT_FALSE(path.hasCycleAtBack());
}
TEST_P(ImportPath, SmallCycle) {
ASTImporter::ImportPathTy path;
path.push(D0);
path.push(D0);
EXPECT_TRUE(path.hasCycleAtBack());
path.pop();
EXPECT_FALSE(path.hasCycleAtBack());
path.push(D0);
EXPECT_TRUE(path.hasCycleAtBack());
}
TEST_P(ImportPath, GetSmallCycle) {
ASTImporter::ImportPathTy path;
path.push(D0);
path.push(D0);
EXPECT_TRUE(path.hasCycleAtBack());
std::array<Decl* ,2> Res;
int i = 0;
for (Decl *Di : path.getCycleAtBack()) {
Res[i++] = Di;
}
ASSERT_EQ(i, 2);
EXPECT_EQ(Res[0], D0);
EXPECT_EQ(Res[1], D0);
}
TEST_P(ImportPath, GetCycle) {
ASTImporter::ImportPathTy path;
path.push(D0);
path.push(D1);
path.push(D2);
path.push(D0);
EXPECT_TRUE(path.hasCycleAtBack());
std::array<Decl* ,4> Res;
int i = 0;
for (Decl *Di : path.getCycleAtBack()) {
Res[i++] = Di;
}
ASSERT_EQ(i, 4);
EXPECT_EQ(Res[0], D0);
EXPECT_EQ(Res[1], D2);
EXPECT_EQ(Res[2], D1);
EXPECT_EQ(Res[3], D0);
}
TEST_P(ImportPath, CycleAfterCycle) {
ASTImporter::ImportPathTy path;
path.push(D0);
path.push(D1);
path.push(D0);
path.push(D1);
path.push(D2);
path.push(D0);
EXPECT_TRUE(path.hasCycleAtBack());
std::array<Decl* ,4> Res;
int i = 0;
for (Decl *Di : path.getCycleAtBack()) {
Res[i++] = Di;
}
ASSERT_EQ(i, 4);
EXPECT_EQ(Res[0], D0);
EXPECT_EQ(Res[1], D2);
EXPECT_EQ(Res[2], D1);
EXPECT_EQ(Res[3], D0);
path.pop();
path.pop();
path.pop();
EXPECT_TRUE(path.hasCycleAtBack());
i = 0;
for (Decl *Di : path.getCycleAtBack()) {
Res[i++] = Di;
}
ASSERT_EQ(i, 3);
EXPECT_EQ(Res[0], D0);
EXPECT_EQ(Res[1], D1);
EXPECT_EQ(Res[2], D0);
path.pop();
EXPECT_FALSE(path.hasCycleAtBack());
}
TEST_P(ImportExpr, ImportStringLiteral) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)\"foo\"; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
stringLiteral(hasType(asString("const char [4]"))))));
testImport(
"void declToImport() { (void)L\"foo\"; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
stringLiteral(hasType(asString("const wchar_t [4]"))))));
testImport(
"void declToImport() { (void) \"foo\" \"bar\"; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
stringLiteral(hasType(asString("const char [7]"))))));
}
TEST_P(ImportExpr, ImportChooseExpr) {
MatchVerifier<Decl> Verifier;
// This case tests C code that is not condition-dependent and has a true
// condition.
testImport(
"void declToImport() { (void)__builtin_choose_expr(1, 2, 3); }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(chooseExpr())));
}
TEST_P(ImportExpr, ImportGNUNullExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)__null; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(gnuNullExpr(hasType(isInteger())))));
}
TEST_P(ImportExpr, ImportCXXNullPtrLiteralExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)nullptr; }",
Lang_CXX11, "", Lang_CXX11, Verifier,
functionDecl(hasDescendant(cxxNullPtrLiteralExpr())));
}
TEST_P(ImportExpr, ImportFloatinglLiteralExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)1.0; }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(
floatLiteral(equals(1.0), hasType(asString("double"))))));
testImport(
"void declToImport() { (void)1.0e-5f; }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(
floatLiteral(equals(1.0e-5f), hasType(asString("float"))))));
}
TEST_P(ImportExpr, ImportImaginaryLiteralExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)1.0i; }",
Lang_CXX14, "", Lang_CXX14, Verifier,
functionDecl(hasDescendant(imaginaryLiteral())));
}
TEST_P(ImportExpr, ImportCompoundLiteralExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() {"
" struct s { int x; long y; unsigned z; }; "
" (void)(struct s){ 42, 0L, 1U }; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
compoundLiteralExpr(
hasType(asString("struct s")),
has(initListExpr(
hasType(asString("struct s")),
has(integerLiteral(
equals(42), hasType(asString("int")))),
has(integerLiteral(
equals(0), hasType(asString("long")))),
has(integerLiteral(
equals(1), hasType(asString("unsigned int"))))))))));
}
TEST_P(ImportExpr, ImportCXXThisExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"class declToImport { void f() { (void)this; } };",
Lang_CXX, "", Lang_CXX, Verifier,
cxxRecordDecl(
hasMethod(
hasDescendant(
cxxThisExpr(
hasType(
asString("class declToImport *")))))));
}
TEST_P(ImportExpr, ImportAtomicExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { int *ptr; __atomic_load_n(ptr, 1); }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(
atomicExpr(
has(ignoringParenImpCasts(
declRefExpr(hasDeclaration(varDecl(hasName("ptr"))),
hasType(asString("int *"))))),
has(integerLiteral(equals(1), hasType(asString("int"))))))));
}
TEST_P(ImportExpr, ImportLabelDeclAndAddrLabelExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { loop: goto loop; (void)&&loop; }",
Lang_C, "", Lang_C, Verifier,
functionDecl(
hasDescendant(
labelStmt(hasDeclaration(labelDecl(hasName("loop"))))),
hasDescendant(
addrLabelExpr(hasDeclaration(labelDecl(hasName("loop")))))));
}
AST_MATCHER_P(TemplateDecl, hasTemplateDecl,
internal::Matcher<NamedDecl>, InnerMatcher) {
const NamedDecl *Template = Node.getTemplatedDecl();
return Template && InnerMatcher.matches(*Template, Finder, Builder);
}
TEST_P(ImportExpr, ImportParenListExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"template<typename T> class dummy { void f() { dummy X(*this); } };"
"typedef dummy<int> declToImport;"
"template class dummy<int>;",
Lang_CXX, "", Lang_CXX, Verifier,
typedefDecl(hasType(templateSpecializationType(
hasDeclaration(classTemplateSpecializationDecl(hasSpecializedTemplate(
classTemplateDecl(hasTemplateDecl(cxxRecordDecl(hasMethod(allOf(
hasName("f"),
hasBody(compoundStmt(has(declStmt(hasSingleDecl(
varDecl(hasInitializer(parenListExpr(has(unaryOperator(
hasOperatorName("*"),
hasUnaryOperand(cxxThisExpr())))))))))))))))))))))));
}
TEST_P(ImportExpr, ImportSwitch) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { int b; switch (b) { case 1: break; } }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(
switchStmt(has(compoundStmt(has(caseStmt())))))));
}
TEST_P(ImportExpr, ImportStmtExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { int b; int a = b ?: 1; int C = ({int X=4; X;}); }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(
varDecl(
hasName("C"),
hasType(asString("int")),
hasInitializer(
stmtExpr(
hasAnySubstatement(declStmt(hasSingleDecl(
varDecl(
hasName("X"),
hasType(asString("int")),
hasInitializer(
integerLiteral(equals(4))))))),
hasDescendant(
implicitCastExpr())))))));
}
TEST_P(ImportExpr, ImportConditionalOperator) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)(true ? 1 : -5); }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
conditionalOperator(
hasCondition(cxxBoolLiteral(equals(true))),
hasTrueExpression(integerLiteral(equals(1))),
hasFalseExpression(
unaryOperator(hasUnaryOperand(integerLiteral(equals(5))))))
)));
}
TEST_P(ImportExpr, ImportBinaryConditionalOperator) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { (void)(1 ?: -5); }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
binaryConditionalOperator(
hasCondition(
implicitCastExpr(
hasSourceExpression(opaqueValueExpr(
hasSourceExpression(integerLiteral(equals(1))))),
hasType(booleanType()))),
hasTrueExpression(
opaqueValueExpr(
hasSourceExpression(integerLiteral(equals(1))))),
hasFalseExpression(
unaryOperator(
hasOperatorName("-"),
hasUnaryOperand(integerLiteral(equals(5)))))))));
}
TEST_P(ImportExpr, ImportDesignatedInitExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() {"
" struct point { double x; double y; };"
" struct point ptarray[10] = "
"{ [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; }",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(
initListExpr(
has(designatedInitExpr(
designatorCountIs(2),
hasDescendant(floatLiteral(equals(1.0))),
hasDescendant(integerLiteral(equals(2))))),
has(designatedInitExpr(
designatorCountIs(2),
hasDescendant(floatLiteral(equals(2.0))),
hasDescendant(integerLiteral(equals(2))))),
has(designatedInitExpr(
designatorCountIs(2),
hasDescendant(floatLiteral(equals(1.0))),
hasDescendant(integerLiteral(equals(0)))))))));
}
TEST_P(ImportExpr, ImportPredefinedExpr) {
MatchVerifier<Decl> Verifier;
// __func__ expands as StringLiteral("declToImport")
testImport(
"void declToImport() { (void)__func__; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
predefinedExpr(
hasType(
asString("const char [13]")),
has(stringLiteral(hasType(
asString("const char [13]"))))))));
}
TEST_P(ImportExpr, ImportInitListExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() {"
" struct point { double x; double y; };"
" point ptarray[10] = { [2].y = 1.0, [2].x = 2.0,"
" [0].x = 1.0 }; }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
initListExpr(
has(
cxxConstructExpr(
requiresZeroInitialization())),
has(
initListExpr(
hasType(asString("struct point")),
has(floatLiteral(equals(1.0))),
has(implicitValueInitExpr(
hasType(asString("double")))))),
has(
initListExpr(
hasType(asString("struct point")),
has(floatLiteral(equals(2.0))),
has(floatLiteral(equals(1.0)))))))));
}
const internal::VariadicDynCastAllOfMatcher<Expr, VAArgExpr> vaArgExpr;
TEST_P(ImportExpr, ImportVAArgExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport(__builtin_va_list list, ...) {"
" (void)__builtin_va_arg(list, int); }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
cStyleCastExpr(hasSourceExpression(vaArgExpr())))));
}
TEST_P(ImportExpr, CXXTemporaryObjectExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"struct C {};"
"void declToImport() { C c = C(); }",
Lang_CXX, "", Lang_CXX, Verifier,
functionDecl(hasDescendant(
exprWithCleanups(has(cxxConstructExpr(
has(materializeTemporaryExpr(has(implicitCastExpr(
has(cxxTemporaryObjectExpr())))))))))));
}
TEST_P(ImportType, ImportAtomicType) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { typedef _Atomic(int) a_int; }",
Lang_CXX11, "", Lang_CXX11, Verifier,
functionDecl(hasDescendant(typedefDecl(has(atomicType())))));
}
TEST_P(ImportDecl, ImportFunctionTemplateDecl) {
MatchVerifier<Decl> Verifier;
testImport(
"template <typename T> void declToImport() { };",
Lang_CXX, "", Lang_CXX, Verifier,
functionTemplateDecl());
}
TEST_P(ImportExpr, ImportCXXDependentScopeMemberExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"template <typename T> struct C { T t; };"
"template <typename T> void declToImport() {"
" C<T> d;"
" (void)d.t;"
"}"
"void instantiate() { declToImport<int>(); }",
Lang_CXX, "", Lang_CXX, Verifier,
functionTemplateDecl(hasDescendant(
cStyleCastExpr(has(cxxDependentScopeMemberExpr())))));
testImport(
"template <typename T> struct C { T t; };"
"template <typename T> void declToImport() {"
" C<T> d;"
" (void)(&d)->t;"
"}"
"void instantiate() { declToImport<int>(); }",
Lang_CXX, "", Lang_CXX, Verifier,
functionTemplateDecl(hasDescendant(
cStyleCastExpr(has(cxxDependentScopeMemberExpr())))));
}
TEST_P(ImportType, ImportTypeAliasTemplate) {
MatchVerifier<Decl> Verifier;
testImport(
"template <int K>"
"struct dummy { static const int i = K; };"
"template <int K> using dummy2 = dummy<K>;"
"int declToImport() { return dummy2<3>::i; }",
Lang_CXX11, "", Lang_CXX11, Verifier,
functionDecl(
hasDescendant(implicitCastExpr(has(declRefExpr()))),
unless(hasAncestor(translationUnitDecl(has(typeAliasDecl()))))));
}
const internal::VariadicDynCastAllOfMatcher<Decl, VarTemplateSpecializationDecl>
varTemplateSpecializationDecl;
TEST_P(ImportDecl, ImportVarTemplate) {
MatchVerifier<Decl> Verifier;
testImport(
"template <typename T>"
"T pi = T(3.1415926535897932385L);"
"void declToImport() { (void)pi<int>; }",
Lang_CXX14, "", Lang_CXX14, Verifier,
functionDecl(
hasDescendant(declRefExpr(to(varTemplateSpecializationDecl()))),
unless(hasAncestor(translationUnitDecl(has(varDecl(
hasName("pi"), unless(varTemplateSpecializationDecl()))))))));
}
TEST_P(ImportType, ImportPackExpansion) {
MatchVerifier<Decl> Verifier;
testImport(
"template <typename... Args>"
"struct dummy {"
" dummy(Args... args) {}"
" static const int i = 4;"
"};"
"int declToImport() { return dummy<int>::i; }",
Lang_CXX11, "", Lang_CXX11, Verifier,
functionDecl(hasDescendant(
returnStmt(has(implicitCastExpr(has(declRefExpr())))))));
}
const internal::VariadicDynCastAllOfMatcher<Type,
DependentTemplateSpecializationType>
dependentTemplateSpecializationType;
TEST_P(ImportType, ImportDependentTemplateSpecialization) {
MatchVerifier<Decl> Verifier;
testImport(
"template<typename T>"
"struct A;"
"template<typename T>"
"struct declToImport {"
" typename A<T>::template B<T> a;"
"};",
Lang_CXX, "", Lang_CXX, Verifier,
classTemplateDecl(has(cxxRecordDecl(has(
fieldDecl(hasType(dependentTemplateSpecializationType())))))));
}
const internal::VariadicDynCastAllOfMatcher<Stmt, SizeOfPackExpr>
sizeOfPackExpr;
TEST_P(ImportExpr, ImportSizeOfPackExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"template <typename... Ts>"
"void declToImport() {"
" const int i = sizeof...(Ts);"
"};"
"void g() { declToImport<int>(); }",
Lang_CXX11, "", Lang_CXX11, Verifier,
functionTemplateDecl(hasDescendant(sizeOfPackExpr())));
testImport(
"template <typename... Ts>"
"using X = int[sizeof...(Ts)];"
"template <typename... Us>"
"struct Y {"
" X<Us..., int, double, int, Us...> f;"
"};"
"Y<float, int> declToImport;",
Lang_CXX11, "", Lang_CXX11, Verifier,
varDecl(hasType(classTemplateSpecializationDecl(has(fieldDecl(hasType(
hasUnqualifiedDesugaredType(constantArrayType(hasSize(7))))))))));
}
/// \brief Matches __builtin_types_compatible_p:
/// GNU extension to check equivalent types
/// Given
/// \code
/// __builtin_types_compatible_p(int, int)
/// \endcode
// will generate TypeTraitExpr <...> 'int'
const internal::VariadicDynCastAllOfMatcher<Stmt, TypeTraitExpr> typeTraitExpr;
TEST_P(ImportExpr, ImportTypeTraitExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"void declToImport() { "
" (void)__builtin_types_compatible_p(int, int);"
"}",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasDescendant(typeTraitExpr(hasType(asString("int"))))));
}
const internal::VariadicDynCastAllOfMatcher<Stmt, CXXTypeidExpr> cxxTypeidExpr;
TEST_P(ImportExpr, ImportCXXTypeidExpr) {
MatchVerifier<Decl> Verifier;
testImport(
"namespace std { class type_info {}; }"
"void declToImport() {"
" int x;"
" auto a = typeid(int); auto b = typeid(x);"
"}",
Lang_CXX11, "", Lang_CXX11, Verifier,
functionDecl(
hasDescendant(varDecl(
hasName("a"), hasInitializer(hasDescendant(cxxTypeidExpr())))),
hasDescendant(varDecl(
hasName("b"), hasInitializer(hasDescendant(cxxTypeidExpr()))))));
}
TEST_P(ImportExpr, ImportTypeTraitExprValDep) {
MatchVerifier<Decl> Verifier;
testImport(
"template<typename T> struct declToImport {"
" void m() { (void)__is_pod(T); }"
"};"
"void f() { declToImport<int>().m(); }",
Lang_CXX11, "", Lang_CXX11, Verifier,
classTemplateDecl(has(cxxRecordDecl(has(
functionDecl(hasDescendant(
typeTraitExpr(hasType(booleanType())))))))));
}
TEST_P(ImportDecl, ImportRecordDeclInFunc) {
MatchVerifier<Decl> Verifier;
testImport("int declToImport() { "
" struct data_t {int a;int b;};"
" struct data_t d;"
" return 0;"
"}",
Lang_C, "", Lang_C, Verifier,
functionDecl(hasBody(compoundStmt(
has(declStmt(hasSingleDecl(varDecl(hasName("d")))))))));
}
TEST_P(ASTImporterOptionSpecificTestBase, ImportRecordTypeInFunc) {
Decl *FromTU = getTuDecl("int declToImport() { "
" struct data_t {int a;int b;};"
" struct data_t d;"
" return 0;"
"}",
Lang_C, "input.c");
auto *FromVar =
FirstDeclMatcher<VarDecl>().match(FromTU, varDecl(hasName("d")));
ASSERT_TRUE(FromVar);
auto ToType =
ImportType(FromVar->getType().getCanonicalType(), FromVar, Lang_C);
EXPECT_FALSE(ToType.isNull());
}
TEST_P(ASTImporterOptionSpecificTestBase, ImportRecordDeclInFuncParams) {
// This construct is not supported by ASTImporter.
Decl *FromTU = getTuDecl(
"int declToImport(struct data_t{int a;int b;} ***d){ return 0; }",
Lang_C, "input.c");
auto *From = FirstDeclMatcher<FunctionDecl>().match(
FromTU, functionDecl(hasName("declToImport")));
ASSERT_TRUE(From);
auto *To = Import(From, Lang_C);
EXPECT_EQ(To, nullptr);
}
TEST_P(ASTImporterOptionSpecificTestBase, ImportRecordDeclInFuncFromMacro) {
Decl *FromTU = getTuDecl(
"#define NONAME_SIZEOF(type) sizeof(struct{type *dummy;}) \n"
"int declToImport(){ return NONAME_SIZEOF(int); }",
Lang_C, "input.c");
auto *From = FirstDeclMatcher<FunctionDecl>().match(
FromTU, functionDecl(hasName("declToImport")));
ASSERT_TRUE(From);
auto *To = Import(From, Lang_C);
ASSERT_TRUE(To);
EXPECT_TRUE(MatchVerifier<FunctionDecl>().match(
To, functionDecl(hasName("declToImport"),