forked from OSchip/llvm-project
[ASTImporter] Adding some friend function related unittests.
Reviewers: a.sidorin, a_sidorin Reviewed By: a_sidorin Subscribers: a_sidorin, martong, cfe-commits Differential Revision: https://reviews.llvm.org/D49798 llvm-svn: 340277
This commit is contained in:
Balazs Keri
parent
6bb09a4291
commit
89632b84f5
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@ -2274,6 +2274,211 @@ TEST_P(ImportFriendFunctions, ImportFriendFunctionFromMultipleTU) {
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EXPECT_EQ(ImportedD1->getPreviousDecl(), ImportedD);
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}
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TEST_P(ImportFriendFunctions, Lookup) {
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auto FunctionPattern = functionDecl(hasName("f"));
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auto ClassPattern = cxxRecordDecl(hasName("X"));
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TranslationUnitDecl *FromTU =
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getTuDecl("struct X { friend void f(); };", Lang_CXX, "input0.cc");
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auto *FromD = FirstDeclMatcher<FunctionDecl>().match(FromTU, FunctionPattern);
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ASSERT_TRUE(FromD->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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ASSERT_FALSE(FromD->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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{
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auto FromName = FromD->getDeclName();
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auto *Class = FirstDeclMatcher<CXXRecordDecl>().match(FromTU, ClassPattern);
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auto LookupRes = Class->noload_lookup(FromName);
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ASSERT_EQ(LookupRes.size(), 0u);
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LookupRes = FromTU->noload_lookup(FromName);
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ASSERT_EQ(LookupRes.size(), 1u);
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}
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auto *ToD = cast<FunctionDecl>(Import(FromD, Lang_CXX));
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auto ToName = ToD->getDeclName();
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TranslationUnitDecl *ToTU = ToAST->getASTContext().getTranslationUnitDecl();
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auto *Class = FirstDeclMatcher<CXXRecordDecl>().match(ToTU, ClassPattern);
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auto LookupRes = Class->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 0u);
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LookupRes = ToTU->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 1u);
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EXPECT_EQ(DeclCounter<FunctionDecl>().match(ToTU, FunctionPattern), 1u);
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auto *To0 = FirstDeclMatcher<FunctionDecl>().match(ToTU, FunctionPattern);
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EXPECT_TRUE(To0->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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EXPECT_FALSE(To0->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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}
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TEST_P(ImportFriendFunctions, DISABLED_LookupWithProtoAfter) {
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auto FunctionPattern = functionDecl(hasName("f"));
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auto ClassPattern = cxxRecordDecl(hasName("X"));
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TranslationUnitDecl *FromTU = getTuDecl(
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"struct X { friend void f(); };"
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// This proto decl makes f available to normal
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// lookup, otherwise it is hidden.
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// Normal C++ lookup (implemented in
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// `clang::Sema::CppLookupName()` and in `LookupDirect()`)
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// returns the found `NamedDecl` only if the set IDNS is matched
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"void f();",
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Lang_CXX, "input0.cc");
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auto *FromFriend =
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FirstDeclMatcher<FunctionDecl>().match(FromTU, FunctionPattern);
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auto *FromNormal =
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LastDeclMatcher<FunctionDecl>().match(FromTU, FunctionPattern);
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ASSERT_TRUE(FromFriend->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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ASSERT_FALSE(FromFriend->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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ASSERT_FALSE(FromNormal->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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ASSERT_TRUE(FromNormal->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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auto FromName = FromFriend->getDeclName();
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auto *FromClass =
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FirstDeclMatcher<CXXRecordDecl>().match(FromTU, ClassPattern);
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auto LookupRes = FromClass->noload_lookup(FromName);
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ASSERT_EQ(LookupRes.size(), 0u);
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LookupRes = FromTU->noload_lookup(FromName);
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ASSERT_EQ(LookupRes.size(), 1u);
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auto *ToFriend = cast<FunctionDecl>(Import(FromFriend, Lang_CXX));
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auto ToName = ToFriend->getDeclName();
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TranslationUnitDecl *ToTU = ToAST->getASTContext().getTranslationUnitDecl();
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auto *ToClass = FirstDeclMatcher<CXXRecordDecl>().match(ToTU, ClassPattern);
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LookupRes = ToClass->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 0u);
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LookupRes = ToTU->noload_lookup(ToName);
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// Test is disabled because this result is 2.
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EXPECT_EQ(LookupRes.size(), 1u);
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ASSERT_EQ(DeclCounter<FunctionDecl>().match(ToTU, FunctionPattern), 2u);
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ToFriend = FirstDeclMatcher<FunctionDecl>().match(ToTU, FunctionPattern);
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auto *ToNormal = LastDeclMatcher<FunctionDecl>().match(ToTU, FunctionPattern);
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EXPECT_TRUE(ToFriend->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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EXPECT_FALSE(ToFriend->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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EXPECT_FALSE(ToNormal->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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EXPECT_TRUE(ToNormal->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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}
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TEST_P(ImportFriendFunctions, LookupWithProtoBefore) {
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auto FunctionPattern = functionDecl(hasName("f"));
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auto ClassPattern = cxxRecordDecl(hasName("X"));
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TranslationUnitDecl *FromTU = getTuDecl(
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"void f();"
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"struct X { friend void f(); };",
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Lang_CXX, "input0.cc");
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auto *FromNormal =
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FirstDeclMatcher<FunctionDecl>().match(FromTU, FunctionPattern);
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auto *FromFriend =
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LastDeclMatcher<FunctionDecl>().match(FromTU, FunctionPattern);
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ASSERT_FALSE(FromNormal->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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ASSERT_TRUE(FromNormal->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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ASSERT_TRUE(FromFriend->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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ASSERT_TRUE(FromFriend->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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auto FromName = FromNormal->getDeclName();
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auto *FromClass =
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FirstDeclMatcher<CXXRecordDecl>().match(FromTU, ClassPattern);
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auto LookupRes = FromClass->noload_lookup(FromName);
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ASSERT_EQ(LookupRes.size(), 0u);
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LookupRes = FromTU->noload_lookup(FromName);
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ASSERT_EQ(LookupRes.size(), 1u);
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auto *ToNormal = cast<FunctionDecl>(Import(FromNormal, Lang_CXX));
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auto ToName = ToNormal->getDeclName();
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TranslationUnitDecl *ToTU = ToAST->getASTContext().getTranslationUnitDecl();
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auto *ToClass = FirstDeclMatcher<CXXRecordDecl>().match(ToTU, ClassPattern);
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LookupRes = ToClass->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 0u);
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LookupRes = ToTU->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 1u);
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EXPECT_EQ(DeclCounter<FunctionDecl>().match(ToTU, FunctionPattern), 2u);
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ToNormal = FirstDeclMatcher<FunctionDecl>().match(ToTU, FunctionPattern);
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auto *ToFriend = LastDeclMatcher<FunctionDecl>().match(ToTU, FunctionPattern);
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EXPECT_FALSE(ToNormal->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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EXPECT_TRUE(ToNormal->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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EXPECT_TRUE(ToFriend->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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EXPECT_TRUE(ToFriend->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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}
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TEST_P(ImportFriendFunctions, ImportFriendChangesLookup) {
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auto Pattern = functionDecl(hasName("f"));
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TranslationUnitDecl *FromNormalTU =
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getTuDecl("void f();", Lang_CXX, "input0.cc");
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auto *FromNormalF =
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FirstDeclMatcher<FunctionDecl>().match(FromNormalTU, Pattern);
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TranslationUnitDecl *FromFriendTU =
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getTuDecl("class X { friend void f(); };", Lang_CXX, "input1.cc");
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auto *FromFriendF =
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FirstDeclMatcher<FunctionDecl>().match(FromFriendTU, Pattern);
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auto FromNormalName = FromNormalF->getDeclName();
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auto FromFriendName = FromFriendF->getDeclName();
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ASSERT_TRUE(FromNormalF->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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ASSERT_FALSE(FromNormalF->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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ASSERT_FALSE(FromFriendF->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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ASSERT_TRUE(FromFriendF->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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auto LookupRes = FromNormalTU->noload_lookup(FromNormalName);
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ASSERT_EQ(LookupRes.size(), 1u);
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LookupRes = FromFriendTU->noload_lookup(FromFriendName);
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ASSERT_EQ(LookupRes.size(), 1u);
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auto *ToNormalF = cast<FunctionDecl>(Import(FromNormalF, Lang_CXX));
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TranslationUnitDecl *ToTU = ToAST->getASTContext().getTranslationUnitDecl();
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auto ToName = ToNormalF->getDeclName();
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EXPECT_TRUE(ToNormalF->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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EXPECT_FALSE(ToNormalF->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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LookupRes = ToTU->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 1u);
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EXPECT_EQ(DeclCounter<FunctionDecl>().match(ToTU, Pattern), 1u);
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auto *ToFriendF = cast<FunctionDecl>(Import(FromFriendF, Lang_CXX));
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LookupRes = ToTU->noload_lookup(ToName);
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EXPECT_EQ(LookupRes.size(), 1u);
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EXPECT_EQ(DeclCounter<FunctionDecl>().match(ToTU, Pattern), 2u);
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EXPECT_TRUE(ToNormalF->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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EXPECT_FALSE(ToNormalF->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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EXPECT_TRUE(ToFriendF->isInIdentifierNamespace(Decl::IDNS_Ordinary));
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EXPECT_TRUE(ToFriendF->isInIdentifierNamespace(Decl::IDNS_OrdinaryFriend));
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}
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TEST_P(ImportFriendFunctions, ImportFriendList) {
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TranslationUnitDecl *FromTU = getTuDecl(
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"struct X { friend void f(); };"
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"void f();",
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Lang_CXX, "input0.cc");
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auto *FromFriendF = FirstDeclMatcher<FunctionDecl>().match(
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FromTU, functionDecl(hasName("f")));
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auto *FromClass = FirstDeclMatcher<CXXRecordDecl>().match(
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FromTU, cxxRecordDecl(hasName("X")));
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auto *FromFriend = FirstDeclMatcher<FriendDecl>().match(FromTU, friendDecl());
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auto FromFriends = FromClass->friends();
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unsigned int FrN = 0;
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for (auto Fr : FromFriends) {
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ASSERT_EQ(Fr, FromFriend);
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++FrN;
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}
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ASSERT_EQ(FrN, 1u);
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Import(FromFriendF, Lang_CXX);
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TranslationUnitDecl *ToTU = ToAST->getASTContext().getTranslationUnitDecl();
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auto *ToClass = FirstDeclMatcher<CXXRecordDecl>().match(
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ToTU, cxxRecordDecl(hasName("X")));
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auto *ToFriend = FirstDeclMatcher<FriendDecl>().match(ToTU, friendDecl());
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auto ToFriends = ToClass->friends();
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FrN = 0;
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for (auto Fr : ToFriends) {
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EXPECT_EQ(Fr, ToFriend);
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++FrN;
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}
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EXPECT_EQ(FrN, 1u);
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}
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AST_MATCHER_P(TagDecl, hasTypedefForAnonDecl, Matcher<TypedefNameDecl>,
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InnerMatcher) {
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if (auto *Typedef = Node.getTypedefNameForAnonDecl())
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