| //== unittests/ASTMatchers/ASTMatchersNodeTest.cpp - AST matcher unit tests ==// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "ASTMatchersTest.h" |
| #include "clang/AST/PrettyPrinter.h" |
| #include "clang/ASTMatchers/ASTMatchFinder.h" |
| #include "clang/ASTMatchers/ASTMatchers.h" |
| #include "clang/Tooling/Tooling.h" |
| #include "llvm/ADT/Triple.h" |
| #include "llvm/Support/Host.h" |
| #include "gtest/gtest.h" |
| |
| namespace clang { |
| namespace ast_matchers { |
| |
| TEST(Finder, DynamicOnlyAcceptsSomeMatchers) { |
| MatchFinder Finder; |
| EXPECT_TRUE(Finder.addDynamicMatcher(decl(), nullptr)); |
| EXPECT_TRUE(Finder.addDynamicMatcher(callExpr(), nullptr)); |
| EXPECT_TRUE(Finder.addDynamicMatcher(constantArrayType(hasSize(42)), |
| nullptr)); |
| |
| // Do not accept non-toplevel matchers. |
| EXPECT_FALSE(Finder.addDynamicMatcher(isArrow(), nullptr)); |
| EXPECT_FALSE(Finder.addDynamicMatcher(hasName("x"), nullptr)); |
| } |
| |
| TEST(Decl, MatchesDeclarations) { |
| EXPECT_TRUE(notMatches("", decl(usingDecl()))); |
| EXPECT_TRUE(matches("namespace x { class X {}; } using x::X;", |
| decl(usingDecl()))); |
| } |
| |
| TEST(NameableDeclaration, MatchesVariousDecls) { |
| DeclarationMatcher NamedX = namedDecl(hasName("X")); |
| EXPECT_TRUE(matches("typedef int X;", NamedX)); |
| EXPECT_TRUE(matches("int X;", NamedX)); |
| EXPECT_TRUE(matches("class foo { virtual void X(); };", NamedX)); |
| EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", NamedX)); |
| EXPECT_TRUE(matches("void foo() { int X; }", NamedX)); |
| EXPECT_TRUE(matches("namespace X { }", NamedX)); |
| EXPECT_TRUE(matches("enum X { A, B, C };", NamedX)); |
| |
| EXPECT_TRUE(notMatches("#define X 1", NamedX)); |
| } |
| |
| TEST(NameableDeclaration, REMatchesVariousDecls) { |
| DeclarationMatcher NamedX = namedDecl(matchesName("::X")); |
| EXPECT_TRUE(matches("typedef int Xa;", NamedX)); |
| EXPECT_TRUE(matches("int Xb;", NamedX)); |
| EXPECT_TRUE(matches("class foo { virtual void Xc(); };", NamedX)); |
| EXPECT_TRUE(matches("void foo() try { } catch(int Xdef) { }", NamedX)); |
| EXPECT_TRUE(matches("void foo() { int Xgh; }", NamedX)); |
| EXPECT_TRUE(matches("namespace Xij { }", NamedX)); |
| EXPECT_TRUE(matches("enum X { A, B, C };", NamedX)); |
| |
| EXPECT_TRUE(notMatches("#define Xkl 1", NamedX)); |
| |
| DeclarationMatcher StartsWithNo = namedDecl(matchesName("::no")); |
| EXPECT_TRUE(matches("int no_foo;", StartsWithNo)); |
| EXPECT_TRUE(matches("class foo { virtual void nobody(); };", StartsWithNo)); |
| |
| DeclarationMatcher Abc = namedDecl(matchesName("a.*b.*c")); |
| EXPECT_TRUE(matches("int abc;", Abc)); |
| EXPECT_TRUE(matches("int aFOObBARc;", Abc)); |
| EXPECT_TRUE(notMatches("int cab;", Abc)); |
| EXPECT_TRUE(matches("int cabc;", Abc)); |
| |
| DeclarationMatcher StartsWithK = namedDecl(matchesName(":k[^:]*$")); |
| EXPECT_TRUE(matches("int k;", StartsWithK)); |
| EXPECT_TRUE(matches("int kAbc;", StartsWithK)); |
| EXPECT_TRUE(matches("namespace x { int kTest; }", StartsWithK)); |
| EXPECT_TRUE(matches("class C { int k; };", StartsWithK)); |
| EXPECT_TRUE(notMatches("class C { int ckc; };", StartsWithK)); |
| } |
| |
| TEST(DeclarationMatcher, MatchClass) { |
| DeclarationMatcher ClassMatcher(recordDecl()); |
| llvm::Triple Triple(llvm::sys::getDefaultTargetTriple()); |
| if (Triple.getOS() != llvm::Triple::Win32 || |
| Triple.getEnvironment() != llvm::Triple::MSVC) |
| EXPECT_FALSE(matches("", ClassMatcher)); |
| else |
| // Matches class type_info. |
| EXPECT_TRUE(matches("", ClassMatcher)); |
| |
| DeclarationMatcher ClassX = recordDecl(recordDecl(hasName("X"))); |
| EXPECT_TRUE(matches("class X;", ClassX)); |
| EXPECT_TRUE(matches("class X {};", ClassX)); |
| EXPECT_TRUE(matches("template<class T> class X {};", ClassX)); |
| EXPECT_TRUE(notMatches("", ClassX)); |
| } |
| |
| TEST(DeclarationMatcher, translationUnitDecl) { |
| const std::string Code = "int MyVar1;\n" |
| "namespace NameSpace {\n" |
| "int MyVar2;\n" |
| "} // namespace NameSpace\n"; |
| EXPECT_TRUE(matches( |
| Code, varDecl(hasName("MyVar1"), hasDeclContext(translationUnitDecl())))); |
| EXPECT_FALSE(matches( |
| Code, varDecl(hasName("MyVar2"), hasDeclContext(translationUnitDecl())))); |
| EXPECT_TRUE(matches( |
| Code, |
| varDecl(hasName("MyVar2"), |
| hasDeclContext(decl(hasDeclContext(translationUnitDecl())))))); |
| } |
| |
| TEST(DeclarationMatcher, LinkageSpecification) { |
| EXPECT_TRUE(matches("extern \"C\" { void foo() {}; }", linkageSpecDecl())); |
| EXPECT_TRUE(notMatches("void foo() {};", linkageSpecDecl())); |
| } |
| |
| TEST(ClassTemplate, DoesNotMatchClass) { |
| DeclarationMatcher ClassX = classTemplateDecl(hasName("X")); |
| EXPECT_TRUE(notMatches("class X;", ClassX)); |
| EXPECT_TRUE(notMatches("class X {};", ClassX)); |
| } |
| |
| TEST(ClassTemplate, MatchesClassTemplate) { |
| DeclarationMatcher ClassX = classTemplateDecl(hasName("X")); |
| EXPECT_TRUE(matches("template<typename T> class X {};", ClassX)); |
| EXPECT_TRUE(matches("class Z { template<class T> class X {}; };", ClassX)); |
| } |
| |
| TEST(ClassTemplate, DoesNotMatchClassTemplateExplicitSpecialization) { |
| EXPECT_TRUE(notMatches("template<typename T> class X { };" |
| "template<> class X<int> { int a; };", |
| classTemplateDecl(hasName("X"), |
| hasDescendant(fieldDecl(hasName("a")))))); |
| } |
| |
| TEST(ClassTemplate, DoesNotMatchClassTemplatePartialSpecialization) { |
| EXPECT_TRUE(notMatches("template<typename T, typename U> class X { };" |
| "template<typename T> class X<T, int> { int a; };", |
| classTemplateDecl(hasName("X"), |
| hasDescendant(fieldDecl(hasName("a")))))); |
| } |
| |
| TEST(DeclarationMatcher, MatchCudaDecl) { |
| EXPECT_TRUE(matchesWithCuda("__global__ void f() { }" |
| "void g() { f<<<1, 2>>>(); }", |
| cudaKernelCallExpr())); |
| EXPECT_TRUE(matchesWithCuda("__attribute__((device)) void f() {}", |
| hasAttr(clang::attr::CUDADevice))); |
| EXPECT_TRUE(notMatchesWithCuda("void f() {}", |
| cudaKernelCallExpr())); |
| EXPECT_FALSE(notMatchesWithCuda("__attribute__((global)) void f() {}", |
| hasAttr(clang::attr::CUDAGlobal))); |
| } |
| |
| TEST(ValueDecl, Matches) { |
| EXPECT_TRUE(matches("enum EnumType { EnumValue };", |
| valueDecl(hasType(asString("enum EnumType"))))); |
| EXPECT_TRUE(matches("void FunctionDecl();", |
| valueDecl(hasType(asString("void (void)"))))); |
| } |
| |
| TEST(Enum, DoesNotMatchClasses) { |
| EXPECT_TRUE(notMatches("class X {};", enumDecl(hasName("X")))); |
| } |
| |
| TEST(Enum, MatchesEnums) { |
| EXPECT_TRUE(matches("enum X {};", enumDecl(hasName("X")))); |
| } |
| |
| TEST(EnumConstant, Matches) { |
| DeclarationMatcher Matcher = enumConstantDecl(hasName("A")); |
| EXPECT_TRUE(matches("enum X{ A };", Matcher)); |
| EXPECT_TRUE(notMatches("enum X{ B };", Matcher)); |
| EXPECT_TRUE(notMatches("enum X {};", Matcher)); |
| } |
| |
| |
| TEST(Matcher, Call) { |
| // FIXME: Do we want to overload Call() to directly take |
| // Matcher<Decl>, too? |
| StatementMatcher MethodX = |
| callExpr(hasDeclaration(cxxMethodDecl(hasName("x")))); |
| |
| EXPECT_TRUE(matches("class Y { void x() { x(); } };", MethodX)); |
| EXPECT_TRUE(notMatches("class Y { void x() {} };", MethodX)); |
| |
| StatementMatcher MethodOnY = |
| cxxMemberCallExpr(on(hasType(recordDecl(hasName("Y"))))); |
| |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z() { Y y; y.x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z(Y &y) { y.x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| notMatches("class Y { public: void x(); }; void z(Y *&y) { y->x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| notMatches("class Y { public: void x(); }; void z(Y y[]) { y->x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| notMatches("class Y { public: void x(); }; void z() { Y *y; y->x(); }", |
| MethodOnY)); |
| |
| StatementMatcher MethodOnYPointer = |
| cxxMemberCallExpr(on(hasType(pointsTo(recordDecl(hasName("Y")))))); |
| |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z() { Y *y; y->x(); }", |
| MethodOnYPointer)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z(Y *&y) { y->x(); }", |
| MethodOnYPointer)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z(Y y[]) { y->x(); }", |
| MethodOnYPointer)); |
| EXPECT_TRUE( |
| notMatches("class Y { public: void x(); }; void z() { Y y; y.x(); }", |
| MethodOnYPointer)); |
| EXPECT_TRUE( |
| notMatches("class Y { public: void x(); }; void z(Y &y) { y.x(); }", |
| MethodOnYPointer)); |
| } |
| TEST(Matcher, Lambda) { |
| EXPECT_TRUE(matches("auto f = [] (int i) { return i; };", |
| lambdaExpr())); |
| } |
| |
| TEST(Matcher, ForRange) { |
| EXPECT_TRUE(matches("int as[] = { 1, 2, 3 };" |
| "void f() { for (auto &a : as); }", |
| cxxForRangeStmt())); |
| EXPECT_TRUE(notMatches("void f() { for (int i; i<5; ++i); }", |
| cxxForRangeStmt())); |
| } |
| |
| TEST(Matcher, SubstNonTypeTemplateParm) { |
| EXPECT_FALSE(matches("template<int N>\n" |
| "struct A { static const int n = 0; };\n" |
| "struct B : public A<42> {};", |
| substNonTypeTemplateParmExpr())); |
| EXPECT_TRUE(matches("template<int N>\n" |
| "struct A { static const int n = N; };\n" |
| "struct B : public A<42> {};", |
| substNonTypeTemplateParmExpr())); |
| } |
| |
| TEST(Matcher, NonTypeTemplateParmDecl) { |
| EXPECT_TRUE(matches("template <int N> void f();", |
| nonTypeTemplateParmDecl(hasName("N")))); |
| EXPECT_TRUE( |
| notMatches("template <typename T> void f();", nonTypeTemplateParmDecl())); |
| } |
| |
| TEST(Matcher, templateTypeParmDecl) { |
| EXPECT_TRUE(matches("template <typename T> void f();", |
| templateTypeParmDecl(hasName("T")))); |
| EXPECT_TRUE( |
| notMatches("template <int N> void f();", templateTypeParmDecl())); |
| } |
| |
| TEST(Matcher, UserDefinedLiteral) { |
| EXPECT_TRUE(matches("constexpr char operator \"\" _inc (const char i) {" |
| " return i + 1;" |
| "}" |
| "char c = 'a'_inc;", |
| userDefinedLiteral())); |
| } |
| |
| TEST(Matcher, FlowControl) { |
| EXPECT_TRUE(matches("void f() { while(true) { break; } }", breakStmt())); |
| EXPECT_TRUE(matches("void f() { while(true) { continue; } }", |
| continueStmt())); |
| EXPECT_TRUE(matches("void f() { goto FOO; FOO: ;}", gotoStmt())); |
| EXPECT_TRUE(matches("void f() { goto FOO; FOO: ;}", |
| labelStmt( |
| hasDeclaration( |
| labelDecl(hasName("FOO")))))); |
| EXPECT_TRUE(matches("void f() { FOO: ; void *ptr = &&FOO; goto *ptr; }", |
| addrLabelExpr())); |
| EXPECT_TRUE(matches("void f() { return; }", returnStmt())); |
| } |
| |
| TEST(Matcher, OverloadedOperatorCall) { |
| StatementMatcher OpCall = cxxOperatorCallExpr(); |
| // Unary operator |
| EXPECT_TRUE(matches("class Y { }; " |
| "bool operator!(Y x) { return false; }; " |
| "Y y; bool c = !y;", OpCall)); |
| // No match -- special operators like "new", "delete" |
| // FIXME: operator new takes size_t, for which we need stddef.h, for which |
| // we need to figure out include paths in the test. |
| // EXPECT_TRUE(NotMatches("#include <stddef.h>\n" |
| // "class Y { }; " |
| // "void *operator new(size_t size) { return 0; } " |
| // "Y *y = new Y;", OpCall)); |
| EXPECT_TRUE(notMatches("class Y { }; " |
| "void operator delete(void *p) { } " |
| "void a() {Y *y = new Y; delete y;}", OpCall)); |
| // Binary operator |
| EXPECT_TRUE(matches("class Y { }; " |
| "bool operator&&(Y x, Y y) { return true; }; " |
| "Y a; Y b; bool c = a && b;", |
| OpCall)); |
| // No match -- normal operator, not an overloaded one. |
| EXPECT_TRUE(notMatches("bool x = true, y = true; bool t = x && y;", OpCall)); |
| EXPECT_TRUE(notMatches("int t = 5 << 2;", OpCall)); |
| } |
| |
| TEST(Matcher, ThisPointerType) { |
| StatementMatcher MethodOnY = |
| cxxMemberCallExpr(thisPointerType(recordDecl(hasName("Y")))); |
| |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z() { Y y; y.x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z(Y &y) { y.x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z(Y *&y) { y->x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z(Y y[]) { y->x(); }", |
| MethodOnY)); |
| EXPECT_TRUE( |
| matches("class Y { public: void x(); }; void z() { Y *y; y->x(); }", |
| MethodOnY)); |
| |
| EXPECT_TRUE(matches( |
| "class Y {" |
| " public: virtual void x();" |
| "};" |
| "class X : public Y {" |
| " public: virtual void x();" |
| "};" |
| "void z() { X *x; x->Y::x(); }", MethodOnY)); |
| } |
| |
| TEST(Matcher, VariableUsage) { |
| StatementMatcher Reference = |
| declRefExpr(to( |
| varDecl(hasInitializer( |
| cxxMemberCallExpr(thisPointerType(recordDecl(hasName("Y")))))))); |
| |
| EXPECT_TRUE(matches( |
| "class Y {" |
| " public:" |
| " bool x() const;" |
| "};" |
| "void z(const Y &y) {" |
| " bool b = y.x();" |
| " if (b) {}" |
| "}", Reference)); |
| |
| EXPECT_TRUE(notMatches( |
| "class Y {" |
| " public:" |
| " bool x() const;" |
| "};" |
| "void z(const Y &y) {" |
| " bool b = y.x();" |
| "}", Reference)); |
| } |
| |
| TEST(Matcher, CalledVariable) { |
| StatementMatcher CallOnVariableY = |
| cxxMemberCallExpr(on(declRefExpr(to(varDecl(hasName("y")))))); |
| |
| EXPECT_TRUE(matches( |
| "class Y { public: void x() { Y y; y.x(); } };", CallOnVariableY)); |
| EXPECT_TRUE(matches( |
| "class Y { public: void x() const { Y y; y.x(); } };", CallOnVariableY)); |
| EXPECT_TRUE(matches( |
| "class Y { public: void x(); };" |
| "class X : public Y { void z() { X y; y.x(); } };", CallOnVariableY)); |
| EXPECT_TRUE(matches( |
| "class Y { public: void x(); };" |
| "class X : public Y { void z() { X *y; y->x(); } };", CallOnVariableY)); |
| EXPECT_TRUE(notMatches( |
| "class Y { public: void x(); };" |
| "class X : public Y { void z() { unsigned long y; ((X*)y)->x(); } };", |
| CallOnVariableY)); |
| } |
| |
| TEST(UnaryExprOrTypeTraitExpr, MatchesSizeOfAndAlignOf) { |
| EXPECT_TRUE(matches("void x() { int a = sizeof(a); }", |
| unaryExprOrTypeTraitExpr())); |
| EXPECT_TRUE(notMatches("void x() { int a = sizeof(a); }", |
| alignOfExpr(anything()))); |
| // FIXME: Uncomment once alignof is enabled. |
| // EXPECT_TRUE(matches("void x() { int a = alignof(a); }", |
| // unaryExprOrTypeTraitExpr())); |
| // EXPECT_TRUE(notMatches("void x() { int a = alignof(a); }", |
| // sizeOfExpr())); |
| } |
| |
| TEST(MemberExpression, DoesNotMatchClasses) { |
| EXPECT_TRUE(notMatches("class Y { void x() {} };", memberExpr())); |
| } |
| |
| TEST(MemberExpression, MatchesMemberFunctionCall) { |
| EXPECT_TRUE(matches("class Y { void x() { x(); } };", memberExpr())); |
| } |
| |
| TEST(MemberExpression, MatchesVariable) { |
| EXPECT_TRUE( |
| matches("class Y { void x() { this->y; } int y; };", memberExpr())); |
| EXPECT_TRUE( |
| matches("class Y { void x() { y; } int y; };", memberExpr())); |
| EXPECT_TRUE( |
| matches("class Y { void x() { Y y; y.y; } int y; };", memberExpr())); |
| } |
| |
| TEST(MemberExpression, MatchesStaticVariable) { |
| EXPECT_TRUE(matches("class Y { void x() { this->y; } static int y; };", |
| memberExpr())); |
| EXPECT_TRUE(notMatches("class Y { void x() { y; } static int y; };", |
| memberExpr())); |
| EXPECT_TRUE(notMatches("class Y { void x() { Y::y; } static int y; };", |
| memberExpr())); |
| } |
| |
| TEST(Function, MatchesFunctionDeclarations) { |
| StatementMatcher CallFunctionF = callExpr(callee(functionDecl(hasName("f")))); |
| |
| EXPECT_TRUE(matches("void f() { f(); }", CallFunctionF)); |
| EXPECT_TRUE(notMatches("void f() { }", CallFunctionF)); |
| |
| if (llvm::Triple(llvm::sys::getDefaultTargetTriple()).getOS() != |
| llvm::Triple::Win32) { |
| // FIXME: Make this work for MSVC. |
| // Dependent contexts, but a non-dependent call. |
| EXPECT_TRUE(matches("void f(); template <int N> void g() { f(); }", |
| CallFunctionF)); |
| EXPECT_TRUE( |
| matches("void f(); template <int N> struct S { void g() { f(); } };", |
| CallFunctionF)); |
| } |
| |
| // Depedent calls don't match. |
| EXPECT_TRUE( |
| notMatches("void f(int); template <typename T> void g(T t) { f(t); }", |
| CallFunctionF)); |
| EXPECT_TRUE( |
| notMatches("void f(int);" |
| "template <typename T> struct S { void g(T t) { f(t); } };", |
| CallFunctionF)); |
| |
| EXPECT_TRUE(matches("void f(...);", functionDecl(isVariadic()))); |
| EXPECT_TRUE(notMatches("void f(int);", functionDecl(isVariadic()))); |
| EXPECT_TRUE(notMatches("template <typename... Ts> void f(Ts...);", |
| functionDecl(isVariadic()))); |
| EXPECT_TRUE(notMatches("void f();", functionDecl(isVariadic()))); |
| EXPECT_TRUE(notMatchesC("void f();", functionDecl(isVariadic()))); |
| EXPECT_TRUE(matches("void f(...);", functionDecl(parameterCountIs(0)))); |
| EXPECT_TRUE(matchesC("void f();", functionDecl(parameterCountIs(0)))); |
| EXPECT_TRUE(matches("void f(int, ...);", functionDecl(parameterCountIs(1)))); |
| } |
| |
| TEST(FunctionTemplate, MatchesFunctionTemplateDeclarations) { |
| EXPECT_TRUE( |
| matches("template <typename T> void f(T t) {}", |
| functionTemplateDecl(hasName("f")))); |
| } |
| |
| TEST(FunctionTemplate, DoesNotMatchFunctionDeclarations) { |
| EXPECT_TRUE( |
| notMatches("void f(double d); void f(int t) {}", |
| functionTemplateDecl(hasName("f")))); |
| } |
| |
| TEST(FunctionTemplate, DoesNotMatchFunctionTemplateSpecializations) { |
| EXPECT_TRUE( |
| notMatches("void g(); template <typename T> void f(T t) {}" |
| "template <> void f(int t) { g(); }", |
| functionTemplateDecl(hasName("f"), |
| hasDescendant(declRefExpr(to( |
| functionDecl(hasName("g")))))))); |
| } |
| |
| TEST(Matcher, MatchesClassTemplateSpecialization) { |
| EXPECT_TRUE(matches("template<typename T> struct A {};" |
| "template<> struct A<int> {};", |
| classTemplateSpecializationDecl())); |
| EXPECT_TRUE(matches("template<typename T> struct A {}; A<int> a;", |
| classTemplateSpecializationDecl())); |
| EXPECT_TRUE(notMatches("template<typename T> struct A {};", |
| classTemplateSpecializationDecl())); |
| } |
| |
| TEST(DeclaratorDecl, MatchesDeclaratorDecls) { |
| EXPECT_TRUE(matches("int x;", declaratorDecl())); |
| EXPECT_TRUE(notMatches("class A {};", declaratorDecl())); |
| } |
| |
| TEST(ParmVarDecl, MatchesParmVars) { |
| EXPECT_TRUE(matches("void f(int x);", parmVarDecl())); |
| EXPECT_TRUE(notMatches("void f();", parmVarDecl())); |
| } |
| |
| TEST(Matcher, ConstructorCall) { |
| StatementMatcher Constructor = cxxConstructExpr(); |
| |
| EXPECT_TRUE( |
| matches("class X { public: X(); }; void x() { X x; }", Constructor)); |
| EXPECT_TRUE( |
| matches("class X { public: X(); }; void x() { X x = X(); }", |
| Constructor)); |
| EXPECT_TRUE( |
| matches("class X { public: X(int); }; void x() { X x = 0; }", |
| Constructor)); |
| EXPECT_TRUE(matches("class X {}; void x(int) { X x; }", Constructor)); |
| } |
| |
| TEST(Matcher, ThisExpr) { |
| EXPECT_TRUE( |
| matches("struct X { int a; int f () { return a; } };", cxxThisExpr())); |
| EXPECT_TRUE( |
| notMatches("struct X { int f () { int a; return a; } };", cxxThisExpr())); |
| } |
| |
| TEST(Matcher, BindTemporaryExpression) { |
| StatementMatcher TempExpression = cxxBindTemporaryExpr(); |
| |
| std::string ClassString = "class string { public: string(); ~string(); }; "; |
| |
| EXPECT_TRUE( |
| matches(ClassString + |
| "string GetStringByValue();" |
| "void FunctionTakesString(string s);" |
| "void run() { FunctionTakesString(GetStringByValue()); }", |
| TempExpression)); |
| |
| EXPECT_TRUE( |
| notMatches(ClassString + |
| "string* GetStringPointer(); " |
| "void FunctionTakesStringPtr(string* s);" |
| "void run() {" |
| " string* s = GetStringPointer();" |
| " FunctionTakesStringPtr(GetStringPointer());" |
| " FunctionTakesStringPtr(s);" |
| "}", |
| TempExpression)); |
| |
| EXPECT_TRUE( |
| notMatches("class no_dtor {};" |
| "no_dtor GetObjByValue();" |
| "void ConsumeObj(no_dtor param);" |
| "void run() { ConsumeObj(GetObjByValue()); }", |
| TempExpression)); |
| } |
| |
| TEST(MaterializeTemporaryExpr, MatchesTemporary) { |
| std::string ClassString = |
| "class string { public: string(); int length(); }; "; |
| |
| EXPECT_TRUE( |
| matches(ClassString + |
| "string GetStringByValue();" |
| "void FunctionTakesString(string s);" |
| "void run() { FunctionTakesString(GetStringByValue()); }", |
| materializeTemporaryExpr())); |
| |
| EXPECT_TRUE( |
| notMatches(ClassString + |
| "string* GetStringPointer(); " |
| "void FunctionTakesStringPtr(string* s);" |
| "void run() {" |
| " string* s = GetStringPointer();" |
| " FunctionTakesStringPtr(GetStringPointer());" |
| " FunctionTakesStringPtr(s);" |
| "}", |
| materializeTemporaryExpr())); |
| |
| EXPECT_TRUE( |
| notMatches(ClassString + |
| "string GetStringByValue();" |
| "void run() { int k = GetStringByValue().length(); }", |
| materializeTemporaryExpr())); |
| |
| EXPECT_TRUE( |
| notMatches(ClassString + |
| "string GetStringByValue();" |
| "void run() { GetStringByValue(); }", |
| materializeTemporaryExpr())); |
| } |
| |
| TEST(Matcher, NewExpression) { |
| StatementMatcher New = cxxNewExpr(); |
| |
| EXPECT_TRUE(matches("class X { public: X(); }; void x() { new X; }", New)); |
| EXPECT_TRUE( |
| matches("class X { public: X(); }; void x() { new X(); }", New)); |
| EXPECT_TRUE( |
| matches("class X { public: X(int); }; void x() { new X(0); }", New)); |
| EXPECT_TRUE(matches("class X {}; void x(int) { new X; }", New)); |
| } |
| |
| TEST(Matcher, DeleteExpression) { |
| EXPECT_TRUE(matches("struct A {}; void f(A* a) { delete a; }", |
| cxxDeleteExpr())); |
| } |
| |
| TEST(Matcher, DefaultArgument) { |
| StatementMatcher Arg = cxxDefaultArgExpr(); |
| |
| EXPECT_TRUE(matches("void x(int, int = 0) { int y; x(y); }", Arg)); |
| EXPECT_TRUE( |
| matches("class X { void x(int, int = 0) { int y; x(y); } };", Arg)); |
| EXPECT_TRUE(notMatches("void x(int, int = 0) { int y; x(y, 0); }", Arg)); |
| } |
| |
| TEST(Matcher, StringLiterals) { |
| StatementMatcher Literal = stringLiteral(); |
| EXPECT_TRUE(matches("const char *s = \"string\";", Literal)); |
| // wide string |
| EXPECT_TRUE(matches("const wchar_t *s = L\"string\";", Literal)); |
| // with escaped characters |
| EXPECT_TRUE(matches("const char *s = \"\x05five\";", Literal)); |
| // no matching -- though the data type is the same, there is no string literal |
| EXPECT_TRUE(notMatches("const char s[1] = {'a'};", Literal)); |
| } |
| |
| TEST(Matcher, CharacterLiterals) { |
| StatementMatcher CharLiteral = characterLiteral(); |
| EXPECT_TRUE(matches("const char c = 'c';", CharLiteral)); |
| // wide character |
| EXPECT_TRUE(matches("const char c = L'c';", CharLiteral)); |
| // wide character, Hex encoded, NOT MATCHED! |
| EXPECT_TRUE(notMatches("const wchar_t c = 0x2126;", CharLiteral)); |
| EXPECT_TRUE(notMatches("const char c = 0x1;", CharLiteral)); |
| } |
| |
| TEST(Matcher, IntegerLiterals) { |
| StatementMatcher HasIntLiteral = integerLiteral(); |
| EXPECT_TRUE(matches("int i = 10;", HasIntLiteral)); |
| EXPECT_TRUE(matches("int i = 0x1AB;", HasIntLiteral)); |
| EXPECT_TRUE(matches("int i = 10L;", HasIntLiteral)); |
| EXPECT_TRUE(matches("int i = 10U;", HasIntLiteral)); |
| |
| // Non-matching cases (character literals, float and double) |
| EXPECT_TRUE(notMatches("int i = L'a';", |
| HasIntLiteral)); // this is actually a character |
| // literal cast to int |
| EXPECT_TRUE(notMatches("int i = 'a';", HasIntLiteral)); |
| EXPECT_TRUE(notMatches("int i = 1e10;", HasIntLiteral)); |
| EXPECT_TRUE(notMatches("int i = 10.0;", HasIntLiteral)); |
| } |
| |
| TEST(Matcher, FloatLiterals) { |
| StatementMatcher HasFloatLiteral = floatLiteral(); |
| EXPECT_TRUE(matches("float i = 10.0;", HasFloatLiteral)); |
| EXPECT_TRUE(matches("float i = 10.0f;", HasFloatLiteral)); |
| EXPECT_TRUE(matches("double i = 10.0;", HasFloatLiteral)); |
| EXPECT_TRUE(matches("double i = 10.0L;", HasFloatLiteral)); |
| EXPECT_TRUE(matches("double i = 1e10;", HasFloatLiteral)); |
| EXPECT_TRUE(matches("double i = 5.0;", floatLiteral(equals(5.0)))); |
| EXPECT_TRUE(matches("double i = 5.0;", floatLiteral(equals(5.0f)))); |
| EXPECT_TRUE( |
| matches("double i = 5.0;", floatLiteral(equals(llvm::APFloat(5.0))))); |
| |
| EXPECT_TRUE(notMatches("float i = 10;", HasFloatLiteral)); |
| EXPECT_TRUE(notMatches("double i = 5.0;", floatLiteral(equals(6.0)))); |
| EXPECT_TRUE(notMatches("double i = 5.0;", floatLiteral(equals(6.0f)))); |
| EXPECT_TRUE( |
| notMatches("double i = 5.0;", floatLiteral(equals(llvm::APFloat(6.0))))); |
| } |
| |
| TEST(Matcher, NullPtrLiteral) { |
| EXPECT_TRUE(matches("int* i = nullptr;", cxxNullPtrLiteralExpr())); |
| } |
| |
| TEST(Matcher, GNUNullExpr) { |
| EXPECT_TRUE(matches("int* i = __null;", gnuNullExpr())); |
| } |
| |
| TEST(Matcher, AtomicExpr) { |
| EXPECT_TRUE(matches("void foo() { int *ptr; __atomic_load_n(ptr, 1); }", |
| atomicExpr())); |
| } |
| |
| TEST(Matcher, Initializers) { |
| const char *ToMatch = "void foo() { struct point { double x; double y; };" |
| " struct point ptarray[10] = " |
| " { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; }"; |
| EXPECT_TRUE(matchesConditionally( |
| ToMatch, |
| 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))))) |
| ), true, "-std=gnu++98")); |
| |
| EXPECT_TRUE(matchesC99(ToMatch, |
| initListExpr( |
| hasSyntacticForm( |
| initListExpr( |
| has( |
| designatedInitExpr( |
| designatorCountIs(2), |
| has(floatLiteral( |
| equals(1.0))), |
| has(integerLiteral( |
| equals(2))))), |
| has( |
| designatedInitExpr( |
| designatorCountIs(2), |
| has(floatLiteral( |
| equals(2.0))), |
| has(integerLiteral( |
| equals(2))))), |
| has( |
| designatedInitExpr( |
| designatorCountIs(2), |
| has(floatLiteral( |
| equals(1.0))), |
| has(integerLiteral( |
| equals(0))))) |
| ))))); |
| } |
| |
| TEST(Matcher, ParenListExpr) { |
| EXPECT_TRUE( |
| matches("template<typename T> class foo { void bar() { foo X(*this); } };" |
| "template class foo<int>;", |
| varDecl(hasInitializer(parenListExpr(has(unaryOperator())))))); |
| } |
| |
| TEST(Matcher, StmtExpr) { |
| EXPECT_TRUE(matches("void declToImport() { int C = ({int X=4; X;}); }", |
| varDecl(hasInitializer(stmtExpr())))); |
| } |
| |
| TEST(Matcher, ImportPredefinedExpr) { |
| // __func__ expands as StringLiteral("foo") |
| EXPECT_TRUE(matches("void foo() { __func__; }", |
| predefinedExpr( |
| hasType(asString("const char [4]")), |
| has(stringLiteral())))); |
| } |
| |
| TEST(Matcher, AsmStatement) { |
| EXPECT_TRUE(matches("void foo() { __asm(\"mov al, 2\"); }", asmStmt())); |
| } |
| |
| TEST(Matcher, Conditions) { |
| StatementMatcher Condition = |
| ifStmt(hasCondition(cxxBoolLiteral(equals(true)))); |
| |
| EXPECT_TRUE(matches("void x() { if (true) {} }", Condition)); |
| EXPECT_TRUE(notMatches("void x() { if (false) {} }", Condition)); |
| EXPECT_TRUE(notMatches("void x() { bool a = true; if (a) {} }", Condition)); |
| EXPECT_TRUE(notMatches("void x() { if (true || false) {} }", Condition)); |
| EXPECT_TRUE(notMatches("void x() { if (1) {} }", Condition)); |
| } |
| |
| TEST(Matcher, ConditionalOperator) { |
| StatementMatcher Conditional = conditionalOperator( |
| hasCondition(cxxBoolLiteral(equals(true))), |
| hasTrueExpression(cxxBoolLiteral(equals(false)))); |
| |
| EXPECT_TRUE(matches("void x() { true ? false : true; }", Conditional)); |
| EXPECT_TRUE(notMatches("void x() { false ? false : true; }", Conditional)); |
| EXPECT_TRUE(notMatches("void x() { true ? true : false; }", Conditional)); |
| |
| StatementMatcher ConditionalFalse = conditionalOperator( |
| hasFalseExpression(cxxBoolLiteral(equals(false)))); |
| |
| EXPECT_TRUE(matches("void x() { true ? true : false; }", ConditionalFalse)); |
| EXPECT_TRUE( |
| notMatches("void x() { true ? false : true; }", ConditionalFalse)); |
| |
| EXPECT_TRUE(matches("void x() { true ? true : false; }", ConditionalFalse)); |
| EXPECT_TRUE( |
| notMatches("void x() { true ? false : true; }", ConditionalFalse)); |
| } |
| |
| TEST(Matcher, BinaryConditionalOperator) { |
| StatementMatcher AlwaysOne = binaryConditionalOperator( |
| hasCondition(implicitCastExpr( |
| has( |
| opaqueValueExpr( |
| hasSourceExpression((integerLiteral(equals(1)))))))), |
| hasFalseExpression(integerLiteral(equals(0)))); |
| |
| EXPECT_TRUE(matches("void x() { 1 ?: 0; }", AlwaysOne)); |
| |
| StatementMatcher FourNotFive = binaryConditionalOperator( |
| hasTrueExpression(opaqueValueExpr( |
| hasSourceExpression((integerLiteral(equals(4)))))), |
| hasFalseExpression(integerLiteral(equals(5)))); |
| |
| EXPECT_TRUE(matches("void x() { 4 ?: 5; }", FourNotFive)); |
| } |
| |
| TEST(ArraySubscriptMatchers, ArraySubscripts) { |
| EXPECT_TRUE(matches("int i[2]; void f() { i[1] = 1; }", |
| arraySubscriptExpr())); |
| EXPECT_TRUE(notMatches("int i; void f() { i = 1; }", |
| arraySubscriptExpr())); |
| } |
| |
| TEST(For, FindsForLoops) { |
| EXPECT_TRUE(matches("void f() { for(;;); }", forStmt())); |
| EXPECT_TRUE(matches("void f() { if(true) for(;;); }", forStmt())); |
| EXPECT_TRUE(notMatches("int as[] = { 1, 2, 3 };" |
| "void f() { for (auto &a : as); }", |
| forStmt())); |
| } |
| |
| TEST(For, ReportsNoFalsePositives) { |
| EXPECT_TRUE(notMatches("void f() { ; }", forStmt())); |
| EXPECT_TRUE(notMatches("void f() { if(true); }", forStmt())); |
| } |
| |
| TEST(CompoundStatement, HandlesSimpleCases) { |
| EXPECT_TRUE(notMatches("void f();", compoundStmt())); |
| EXPECT_TRUE(matches("void f() {}", compoundStmt())); |
| EXPECT_TRUE(matches("void f() {{}}", compoundStmt())); |
| } |
| |
| TEST(CompoundStatement, DoesNotMatchEmptyStruct) { |
| // It's not a compound statement just because there's "{}" in the source |
| // text. This is an AST search, not grep. |
| EXPECT_TRUE(notMatches("namespace n { struct S {}; }", |
| compoundStmt())); |
| EXPECT_TRUE(matches("namespace n { struct S { void f() {{}} }; }", |
| compoundStmt())); |
| } |
| |
| TEST(CastExpression, MatchesExplicitCasts) { |
| EXPECT_TRUE(matches("char *p = reinterpret_cast<char *>(&p);",castExpr())); |
| EXPECT_TRUE(matches("void *p = (void *)(&p);", castExpr())); |
| EXPECT_TRUE(matches("char q, *p = const_cast<char *>(&q);", castExpr())); |
| EXPECT_TRUE(matches("char c = char(0);", castExpr())); |
| } |
| TEST(CastExpression, MatchesImplicitCasts) { |
| // This test creates an implicit cast from int to char. |
| EXPECT_TRUE(matches("char c = 0;", castExpr())); |
| // This test creates an implicit cast from lvalue to rvalue. |
| EXPECT_TRUE(matches("char c = 0, d = c;", castExpr())); |
| } |
| |
| TEST(CastExpression, DoesNotMatchNonCasts) { |
| EXPECT_TRUE(notMatches("char c = '0';", castExpr())); |
| EXPECT_TRUE(notMatches("char c, &q = c;", castExpr())); |
| EXPECT_TRUE(notMatches("int i = (0);", castExpr())); |
| EXPECT_TRUE(notMatches("int i = 0;", castExpr())); |
| } |
| |
| TEST(ReinterpretCast, MatchesSimpleCase) { |
| EXPECT_TRUE(matches("char* p = reinterpret_cast<char*>(&p);", |
| cxxReinterpretCastExpr())); |
| } |
| |
| TEST(ReinterpretCast, DoesNotMatchOtherCasts) { |
| EXPECT_TRUE(notMatches("char* p = (char*)(&p);", cxxReinterpretCastExpr())); |
| EXPECT_TRUE(notMatches("char q, *p = const_cast<char*>(&q);", |
| cxxReinterpretCastExpr())); |
| EXPECT_TRUE(notMatches("void* p = static_cast<void*>(&p);", |
| cxxReinterpretCastExpr())); |
| EXPECT_TRUE(notMatches("struct B { virtual ~B() {} }; struct D : B {};" |
| "B b;" |
| "D* p = dynamic_cast<D*>(&b);", |
| cxxReinterpretCastExpr())); |
| } |
| |
| TEST(FunctionalCast, MatchesSimpleCase) { |
| std::string foo_class = "class Foo { public: Foo(const char*); };"; |
| EXPECT_TRUE(matches(foo_class + "void r() { Foo f = Foo(\"hello world\"); }", |
| cxxFunctionalCastExpr())); |
| } |
| |
| TEST(FunctionalCast, DoesNotMatchOtherCasts) { |
| std::string FooClass = "class Foo { public: Foo(const char*); };"; |
| EXPECT_TRUE( |
| notMatches(FooClass + "void r() { Foo f = (Foo) \"hello world\"; }", |
| cxxFunctionalCastExpr())); |
| EXPECT_TRUE( |
| notMatches(FooClass + "void r() { Foo f = \"hello world\"; }", |
| cxxFunctionalCastExpr())); |
| } |
| |
| TEST(DynamicCast, MatchesSimpleCase) { |
| EXPECT_TRUE(matches("struct B { virtual ~B() {} }; struct D : B {};" |
| "B b;" |
| "D* p = dynamic_cast<D*>(&b);", |
| cxxDynamicCastExpr())); |
| } |
| |
| TEST(StaticCast, MatchesSimpleCase) { |
| EXPECT_TRUE(matches("void* p(static_cast<void*>(&p));", |
| cxxStaticCastExpr())); |
| } |
| |
| TEST(StaticCast, DoesNotMatchOtherCasts) { |
| EXPECT_TRUE(notMatches("char* p = (char*)(&p);", cxxStaticCastExpr())); |
| EXPECT_TRUE(notMatches("char q, *p = const_cast<char*>(&q);", |
| cxxStaticCastExpr())); |
| EXPECT_TRUE(notMatches("void* p = reinterpret_cast<char*>(&p);", |
| cxxStaticCastExpr())); |
| EXPECT_TRUE(notMatches("struct B { virtual ~B() {} }; struct D : B {};" |
| "B b;" |
| "D* p = dynamic_cast<D*>(&b);", |
| cxxStaticCastExpr())); |
| } |
| |
| TEST(CStyleCast, MatchesSimpleCase) { |
| EXPECT_TRUE(matches("int i = (int) 2.2f;", cStyleCastExpr())); |
| } |
| |
| TEST(CStyleCast, DoesNotMatchOtherCasts) { |
| EXPECT_TRUE(notMatches("char* p = static_cast<char*>(0);" |
| "char q, *r = const_cast<char*>(&q);" |
| "void* s = reinterpret_cast<char*>(&s);" |
| "struct B { virtual ~B() {} }; struct D : B {};" |
| "B b;" |
| "D* t = dynamic_cast<D*>(&b);", |
| cStyleCastExpr())); |
| } |
| |
| TEST(ImplicitCast, MatchesSimpleCase) { |
| // This test creates an implicit const cast. |
| EXPECT_TRUE(matches("int x = 0; const int y = x;", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| // This test creates an implicit cast from int to char. |
| EXPECT_TRUE(matches("char c = 0;", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| // This test creates an implicit array-to-pointer cast. |
| EXPECT_TRUE(matches("int arr[6]; int *p = arr;", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| } |
| |
| TEST(ImplicitCast, DoesNotMatchIncorrectly) { |
| // This test verifies that implicitCastExpr() matches exactly when implicit casts |
| // are present, and that it ignores explicit and paren casts. |
| |
| // These two test cases have no casts. |
| EXPECT_TRUE(notMatches("int x = 0;", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| EXPECT_TRUE(notMatches("int x = 0, &y = x;", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| |
| EXPECT_TRUE(notMatches("int x = 0; double d = (double) x;", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| EXPECT_TRUE(notMatches("const int *p; int *q = const_cast<int *>(p);", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| |
| EXPECT_TRUE(notMatches("int x = (0);", |
| varDecl(hasInitializer(implicitCastExpr())))); |
| } |
| |
| TEST(Statement, DoesNotMatchDeclarations) { |
| EXPECT_TRUE(notMatches("class X {};", stmt())); |
| } |
| |
| TEST(Statement, MatchesCompoundStatments) { |
| EXPECT_TRUE(matches("void x() {}", stmt())); |
| } |
| |
| TEST(DeclarationStatement, DoesNotMatchCompoundStatements) { |
| EXPECT_TRUE(notMatches("void x() {}", declStmt())); |
| } |
| |
| TEST(DeclarationStatement, MatchesVariableDeclarationStatements) { |
| EXPECT_TRUE(matches("void x() { int a; }", declStmt())); |
| } |
| |
| TEST(ExprWithCleanups, MatchesExprWithCleanups) { |
| EXPECT_TRUE(matches("struct Foo { ~Foo(); };" |
| "const Foo f = Foo();", |
| varDecl(hasInitializer(exprWithCleanups())))); |
| EXPECT_FALSE(matches("struct Foo { };" |
| "const Foo f = Foo();", |
| varDecl(hasInitializer(exprWithCleanups())))); |
| } |
| |
| TEST(InitListExpression, MatchesInitListExpression) { |
| EXPECT_TRUE(matches("int a[] = { 1, 2 };", |
| initListExpr(hasType(asString("int [2]"))))); |
| EXPECT_TRUE(matches("struct B { int x, y; }; B b = { 5, 6 };", |
| initListExpr(hasType(recordDecl(hasName("B")))))); |
| EXPECT_TRUE(matches("struct S { S(void (*a)()); };" |
| "void f();" |
| "S s[1] = { &f };", |
| declRefExpr(to(functionDecl(hasName("f")))))); |
| EXPECT_TRUE( |
| matches("int i[1] = {42, [0] = 43};", integerLiteral(equals(42)))); |
| } |
| |
| TEST(UsingDeclaration, MatchesUsingDeclarations) { |
| EXPECT_TRUE(matches("namespace X { int x; } using X::x;", |
| usingDecl())); |
| } |
| |
| TEST(UsingDeclaration, MatchesShadowUsingDelcarations) { |
| EXPECT_TRUE(matches("namespace f { int a; } using f::a;", |
| usingDecl(hasAnyUsingShadowDecl(hasName("a"))))); |
| } |
| |
| TEST(UsingDirectiveDeclaration, MatchesUsingNamespace) { |
| EXPECT_TRUE(matches("namespace X { int x; } using namespace X;", |
| usingDirectiveDecl())); |
| EXPECT_FALSE( |
| matches("namespace X { int x; } using X::x;", usingDirectiveDecl())); |
| } |
| |
| |
| TEST(While, MatchesWhileLoops) { |
| EXPECT_TRUE(notMatches("void x() {}", whileStmt())); |
| EXPECT_TRUE(matches("void x() { while(true); }", whileStmt())); |
| EXPECT_TRUE(notMatches("void x() { do {} while(true); }", whileStmt())); |
| } |
| |
| TEST(Do, MatchesDoLoops) { |
| EXPECT_TRUE(matches("void x() { do {} while(true); }", doStmt())); |
| EXPECT_TRUE(matches("void x() { do ; while(false); }", doStmt())); |
| } |
| |
| TEST(Do, DoesNotMatchWhileLoops) { |
| EXPECT_TRUE(notMatches("void x() { while(true) {} }", doStmt())); |
| } |
| |
| TEST(SwitchCase, MatchesCase) { |
| EXPECT_TRUE(matches("void x() { switch(42) { case 42:; } }", switchCase())); |
| EXPECT_TRUE(matches("void x() { switch(42) { default:; } }", switchCase())); |
| EXPECT_TRUE(matches("void x() { switch(42) default:; }", switchCase())); |
| EXPECT_TRUE(notMatches("void x() { switch(42) {} }", switchCase())); |
| } |
| |
| TEST(SwitchCase, MatchesSwitch) { |
| EXPECT_TRUE(matches("void x() { switch(42) { case 42:; } }", switchStmt())); |
| EXPECT_TRUE(matches("void x() { switch(42) { default:; } }", switchStmt())); |
| EXPECT_TRUE(matches("void x() { switch(42) default:; }", switchStmt())); |
| EXPECT_TRUE(notMatches("void x() {}", switchStmt())); |
| } |
| |
| TEST(ExceptionHandling, SimpleCases) { |
| EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", cxxCatchStmt())); |
| EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", cxxTryStmt())); |
| EXPECT_TRUE( |
| notMatches("void foo() try { } catch(int X) { }", cxxThrowExpr())); |
| EXPECT_TRUE(matches("void foo() try { throw; } catch(int X) { }", |
| cxxThrowExpr())); |
| EXPECT_TRUE(matches("void foo() try { throw 5;} catch(int X) { }", |
| cxxThrowExpr())); |
| EXPECT_TRUE(matches("void foo() try { throw; } catch(...) { }", |
| cxxCatchStmt(isCatchAll()))); |
| EXPECT_TRUE(notMatches("void foo() try { throw; } catch(int) { }", |
| cxxCatchStmt(isCatchAll()))); |
| EXPECT_TRUE(matches("void foo() try {} catch(int X) { }", |
| varDecl(isExceptionVariable()))); |
| EXPECT_TRUE(notMatches("void foo() try { int X; } catch (...) { }", |
| varDecl(isExceptionVariable()))); |
| } |
| |
| TEST(ParenExpression, SimpleCases) { |
| EXPECT_TRUE(matches("int i = (3);", parenExpr())); |
| EXPECT_TRUE(matches("int i = (3 + 7);", parenExpr())); |
| EXPECT_TRUE(notMatches("int i = 3;", parenExpr())); |
| EXPECT_TRUE(notMatches("int foo() { return 1; }; int a = foo();", |
| parenExpr())); |
| } |
| |
| TEST(TypeMatching, MatchesTypes) { |
| EXPECT_TRUE(matches("struct S {};", qualType().bind("loc"))); |
| } |
| |
| TEST(TypeMatching, MatchesConstantArrayTypes) { |
| EXPECT_TRUE(matches("int a[2];", constantArrayType())); |
| EXPECT_TRUE(notMatches( |
| "void f() { int a[] = { 2, 3 }; int b[a[0]]; }", |
| constantArrayType(hasElementType(builtinType())))); |
| |
| EXPECT_TRUE(matches("int a[42];", constantArrayType(hasSize(42)))); |
| EXPECT_TRUE(matches("int b[2*21];", constantArrayType(hasSize(42)))); |
| EXPECT_TRUE(notMatches("int c[41], d[43];", constantArrayType(hasSize(42)))); |
| } |
| |
| TEST(TypeMatching, MatchesDependentSizedArrayTypes) { |
| EXPECT_TRUE(matches( |
| "template <typename T, int Size> class array { T data[Size]; };", |
| dependentSizedArrayType())); |
| EXPECT_TRUE(notMatches( |
| "int a[42]; int b[] = { 2, 3 }; void f() { int c[b[0]]; }", |
| dependentSizedArrayType())); |
| } |
| |
| TEST(TypeMatching, MatchesIncompleteArrayType) { |
| EXPECT_TRUE(matches("int a[] = { 2, 3 };", incompleteArrayType())); |
| EXPECT_TRUE(matches("void f(int a[]) {}", incompleteArrayType())); |
| |
| EXPECT_TRUE(notMatches("int a[42]; void f() { int b[a[0]]; }", |
| incompleteArrayType())); |
| } |
| |
| TEST(TypeMatching, MatchesVariableArrayType) { |
| EXPECT_TRUE(matches("void f(int b) { int a[b]; }", variableArrayType())); |
| EXPECT_TRUE(notMatches("int a[] = {2, 3}; int b[42];", variableArrayType())); |
| |
| EXPECT_TRUE(matches( |
| "void f(int b) { int a[b]; }", |
| variableArrayType(hasSizeExpr(ignoringImpCasts(declRefExpr(to( |
| varDecl(hasName("b"))))))))); |
| } |
| |
| |
| TEST(TypeMatching, MatchesAtomicTypes) { |
| if (llvm::Triple(llvm::sys::getDefaultTargetTriple()).getOS() != |
| llvm::Triple::Win32) { |
| // FIXME: Make this work for MSVC. |
| EXPECT_TRUE(matches("_Atomic(int) i;", atomicType())); |
| |
| EXPECT_TRUE(matches("_Atomic(int) i;", |
| atomicType(hasValueType(isInteger())))); |
| EXPECT_TRUE(notMatches("_Atomic(float) f;", |
| atomicType(hasValueType(isInteger())))); |
| } |
| } |
| |
| TEST(TypeMatching, MatchesAutoTypes) { |
| EXPECT_TRUE(matches("auto i = 2;", autoType())); |
| EXPECT_TRUE(matches("int v[] = { 2, 3 }; void f() { for (int i : v) {} }", |
| autoType())); |
| |
| // FIXME: Matching against the type-as-written can't work here, because the |
| // type as written was not deduced. |
| //EXPECT_TRUE(matches("auto a = 1;", |
| // autoType(hasDeducedType(isInteger())))); |
| //EXPECT_TRUE(notMatches("auto b = 2.0;", |
| // autoType(hasDeducedType(isInteger())))); |
| } |
| |
| TEST(TypeMatching, MatchesFunctionTypes) { |
| EXPECT_TRUE(matches("int (*f)(int);", functionType())); |
| EXPECT_TRUE(matches("void f(int i) {}", functionType())); |
| } |
| |
| TEST(TypeMatching, MatchesFunctionProtoTypes) { |
| EXPECT_TRUE(matches("int (*f)(int);", functionProtoType())); |
| EXPECT_TRUE(matches("void f(int i);", functionProtoType())); |
| EXPECT_TRUE(matches("void f();", functionProtoType(parameterCountIs(0)))); |
| EXPECT_TRUE(notMatchesC("void f();", functionProtoType())); |
| EXPECT_TRUE( |
| matchesC("void f(void);", functionProtoType(parameterCountIs(0)))); |
| } |
| |
| TEST(TypeMatching, MatchesParenType) { |
| EXPECT_TRUE( |
| matches("int (*array)[4];", varDecl(hasType(pointsTo(parenType()))))); |
| EXPECT_TRUE(notMatches("int *array[4];", varDecl(hasType(parenType())))); |
| |
| EXPECT_TRUE(matches( |
| "int (*ptr_to_func)(int);", |
| varDecl(hasType(pointsTo(parenType(innerType(functionType()))))))); |
| EXPECT_TRUE(notMatches( |
| "int (*ptr_to_array)[4];", |
| varDecl(hasType(pointsTo(parenType(innerType(functionType()))))))); |
| } |
| |
| TEST(TypeMatching, PointerTypes) { |
| // FIXME: Reactive when these tests can be more specific (not matching |
| // implicit code on certain platforms), likely when we have hasDescendant for |
| // Types/TypeLocs. |
| //EXPECT_TRUE(matchAndVerifyResultTrue( |
| // "int* a;", |
| // pointerTypeLoc(pointeeLoc(typeLoc().bind("loc"))), |
| // llvm::make_unique<VerifyIdIsBoundTo<TypeLoc>>("loc", 1))); |
| //EXPECT_TRUE(matchAndVerifyResultTrue( |
| // "int* a;", |
| // pointerTypeLoc().bind("loc"), |
| // llvm::make_unique<VerifyIdIsBoundTo<TypeLoc>>("loc", 1))); |
| EXPECT_TRUE(matches( |
| "int** a;", |
| loc(pointerType(pointee(qualType()))))); |
| EXPECT_TRUE(matches( |
| "int** a;", |
| loc(pointerType(pointee(pointerType()))))); |
| EXPECT_TRUE(matches( |
| "int* b; int* * const a = &b;", |
| loc(qualType(isConstQualified(), pointerType())))); |
| |
| std::string Fragment = "struct A { int i; }; int A::* ptr = &A::i;"; |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(blockPointerType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("ptr"), |
| hasType(memberPointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(pointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(lValueReferenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(rValueReferenceType())))); |
| |
| Fragment = "int *ptr;"; |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(blockPointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(memberPointerType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("ptr"), |
| hasType(pointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ptr"), |
| hasType(referenceType())))); |
| |
| Fragment = "int a; int &ref = a;"; |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(blockPointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(memberPointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(pointerType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("ref"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("ref"), |
| hasType(lValueReferenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(rValueReferenceType())))); |
| |
| Fragment = "int &&ref = 2;"; |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(blockPointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(memberPointerType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(pointerType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("ref"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("ref"), |
| hasType(lValueReferenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("ref"), |
| hasType(rValueReferenceType())))); |
| } |
| |
| TEST(TypeMatching, AutoRefTypes) { |
| std::string Fragment = "auto a = 1;" |
| "auto b = a;" |
| "auto &c = a;" |
| "auto &&d = c;" |
| "auto &&e = 2;"; |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("a"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("b"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("c"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("c"), |
| hasType(lValueReferenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("c"), |
| hasType(rValueReferenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("d"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("d"), |
| hasType(lValueReferenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("d"), |
| hasType(rValueReferenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("e"), |
| hasType(referenceType())))); |
| EXPECT_TRUE(notMatches(Fragment, varDecl(hasName("e"), |
| hasType(lValueReferenceType())))); |
| EXPECT_TRUE(matches(Fragment, varDecl(hasName("e"), |
| hasType(rValueReferenceType())))); |
| } |
| |
| TEST(TypeMatching, MatchesPointersToConstTypes) { |
| EXPECT_TRUE(matches("int b; int * const a = &b;", |
| loc(pointerType()))); |
| EXPECT_TRUE(matches("int b; int * const a = &b;", |
| loc(pointerType()))); |
| EXPECT_TRUE(matches( |
| "int b; const int * a = &b;", |
| loc(pointerType(pointee(builtinType()))))); |
| EXPECT_TRUE(matches( |
| "int b; const int * a = &b;", |
| pointerType(pointee(builtinType())))); |
| } |
| |
| TEST(TypeMatching, MatchesTypedefTypes) { |
| EXPECT_TRUE(matches("typedef int X; X a;", varDecl(hasName("a"), |
| hasType(typedefType())))); |
| } |
| |
| TEST(TypeMatching, MatchesTemplateSpecializationType) { |
| EXPECT_TRUE(matches("template <typename T> class A{}; A<int> a;", |
| templateSpecializationType())); |
| } |
| |
| TEST(TypeMatching, MatchesRecordType) { |
| EXPECT_TRUE(matches("class C{}; C c;", recordType())); |
| EXPECT_TRUE(matches("struct S{}; S s;", |
| recordType(hasDeclaration(recordDecl(hasName("S")))))); |
| EXPECT_TRUE(notMatches("int i;", |
| recordType(hasDeclaration(recordDecl(hasName("S")))))); |
| } |
| |
| TEST(TypeMatching, MatchesElaboratedType) { |
| EXPECT_TRUE(matches( |
| "namespace N {" |
| " namespace M {" |
| " class D {};" |
| " }" |
| "}" |
| "N::M::D d;", elaboratedType())); |
| EXPECT_TRUE(matches("class C {} c;", elaboratedType())); |
| EXPECT_TRUE(notMatches("class C {}; C c;", elaboratedType())); |
| } |
| |
| TEST(TypeMatching, MatchesSubstTemplateTypeParmType) { |
| const std::string code = "template <typename T>" |
| "int F() {" |
| " return 1 + T();" |
| "}" |
| "int i = F<int>();"; |
| EXPECT_FALSE(matches(code, binaryOperator(hasLHS( |
| expr(hasType(substTemplateTypeParmType())))))); |
| EXPECT_TRUE(matches(code, binaryOperator(hasRHS( |
| expr(hasType(substTemplateTypeParmType())))))); |
| } |
| |
| TEST(NNS, MatchesNestedNameSpecifiers) { |
| EXPECT_TRUE(matches("namespace ns { struct A {}; } ns::A a;", |
| nestedNameSpecifier())); |
| EXPECT_TRUE(matches("template <typename T> class A { typename T::B b; };", |
| nestedNameSpecifier())); |
| EXPECT_TRUE(matches("struct A { void f(); }; void A::f() {}", |
| nestedNameSpecifier())); |
| EXPECT_TRUE(matches("namespace a { namespace b {} } namespace ab = a::b;", |
| nestedNameSpecifier())); |
| |
| EXPECT_TRUE(matches( |
| "struct A { static void f() {} }; void g() { A::f(); }", |
| nestedNameSpecifier())); |
| EXPECT_TRUE(notMatches( |
| "struct A { static void f() {} }; void g(A* a) { a->f(); }", |
| nestedNameSpecifier())); |
| } |
| |
| TEST(NullStatement, SimpleCases) { |
| EXPECT_TRUE(matches("void f() {int i;;}", nullStmt())); |
| EXPECT_TRUE(notMatches("void f() {int i;}", nullStmt())); |
| } |
| |
| TEST(NS, Alias) { |
| EXPECT_TRUE(matches("namespace test {} namespace alias = ::test;", |
| namespaceAliasDecl(hasName("alias")))); |
| } |
| |
| TEST(NNS, MatchesTypes) { |
| NestedNameSpecifierMatcher Matcher = nestedNameSpecifier( |
| specifiesType(hasDeclaration(recordDecl(hasName("A"))))); |
| EXPECT_TRUE(matches("struct A { struct B {}; }; A::B b;", Matcher)); |
| EXPECT_TRUE(matches("struct A { struct B { struct C {}; }; }; A::B::C c;", |
| Matcher)); |
| EXPECT_TRUE(notMatches("namespace A { struct B {}; } A::B b;", Matcher)); |
| } |
| |
| TEST(NNS, MatchesNamespaceDecls) { |
| NestedNameSpecifierMatcher Matcher = nestedNameSpecifier( |
| specifiesNamespace(hasName("ns"))); |
| EXPECT_TRUE(matches("namespace ns { struct A {}; } ns::A a;", Matcher)); |
| EXPECT_TRUE(notMatches("namespace xx { struct A {}; } xx::A a;", Matcher)); |
| EXPECT_TRUE(notMatches("struct ns { struct A {}; }; ns::A a;", Matcher)); |
| } |
| |
| TEST(NNS, MatchesNestedNameSpecifierPrefixes) { |
| EXPECT_TRUE(matches( |
| "struct A { struct B { struct C {}; }; }; A::B::C c;", |
| nestedNameSpecifier(hasPrefix(specifiesType(asString("struct A")))))); |
| EXPECT_TRUE(matches( |
| "struct A { struct B { struct C {}; }; }; A::B::C c;", |
| nestedNameSpecifierLoc(hasPrefix( |
| specifiesTypeLoc(loc(qualType(asString("struct A")))))))); |
| } |
| |
| |
| template <typename T> |
| class VerifyAncestorHasChildIsEqual : public BoundNodesCallback { |
| public: |
| bool run(const BoundNodes *Nodes) override { return false; } |
| |
| bool run(const BoundNodes *Nodes, ASTContext *Context) override { |
| const T *Node = Nodes->getNodeAs<T>(""); |
| return verify(*Nodes, *Context, Node); |
| } |
| |
| bool verify(const BoundNodes &Nodes, ASTContext &Context, const Stmt *Node) { |
| // Use the original typed pointer to verify we can pass pointers to subtypes |
| // to equalsNode. |
| const T *TypedNode = cast<T>(Node); |
| return selectFirst<T>( |
| "", match(stmt(hasParent( |
| stmt(has(stmt(equalsNode(TypedNode)))).bind(""))), |
| *Node, Context)) != nullptr; |
| } |
| bool verify(const BoundNodes &Nodes, ASTContext &Context, const Decl *Node) { |
| // Use the original typed pointer to verify we can pass pointers to subtypes |
| // to equalsNode. |
| const T *TypedNode = cast<T>(Node); |
| return selectFirst<T>( |
| "", match(decl(hasParent( |
| decl(has(decl(equalsNode(TypedNode)))).bind(""))), |
| *Node, Context)) != nullptr; |
| } |
| bool verify(const BoundNodes &Nodes, ASTContext &Context, const Type *Node) { |
| // Use the original typed pointer to verify we can pass pointers to subtypes |
| // to equalsNode. |
| const T *TypedNode = cast<T>(Node); |
| const auto *Dec = Nodes.getNodeAs<FieldDecl>("decl"); |
| return selectFirst<T>( |
| "", match(fieldDecl(hasParent(decl(has(fieldDecl( |
| hasType(type(equalsNode(TypedNode)).bind(""))))))), |
| *Dec, Context)) != nullptr; |
| } |
| }; |
| |
| TEST(IsEqualTo, MatchesNodesByIdentity) { |
| EXPECT_TRUE(matchAndVerifyResultTrue( |
| "class X { class Y {}; };", recordDecl(hasName("::X::Y")).bind(""), |
| llvm::make_unique<VerifyAncestorHasChildIsEqual<CXXRecordDecl>>())); |
| EXPECT_TRUE(matchAndVerifyResultTrue( |
| "void f() { if (true) if(true) {} }", ifStmt().bind(""), |
| llvm::make_unique<VerifyAncestorHasChildIsEqual<IfStmt>>())); |
| EXPECT_TRUE(matchAndVerifyResultTrue( |
| "class X { class Y {} y; };", |
| fieldDecl(hasName("y"), hasType(type().bind(""))).bind("decl"), |
| llvm::make_unique<VerifyAncestorHasChildIsEqual<Type>>())); |
| } |
| |
| TEST(TypedefDeclMatcher, Match) { |
| EXPECT_TRUE(matches("typedef int typedefDeclTest;", |
| typedefDecl(hasName("typedefDeclTest")))); |
| EXPECT_TRUE(notMatches("using typedefDeclTest2 = int;", |
| typedefDecl(hasName("typedefDeclTest2")))); |
| } |
| |
| TEST(TypeAliasDeclMatcher, Match) { |
| EXPECT_TRUE(matches("using typeAliasTest2 = int;", |
| typeAliasDecl(hasName("typeAliasTest2")))); |
| EXPECT_TRUE(notMatches("typedef int typeAliasTest;", |
| typeAliasDecl(hasName("typeAliasTest")))); |
| } |
| |
| TEST(TypedefNameDeclMatcher, Match) { |
| EXPECT_TRUE(matches("typedef int typedefNameDeclTest1;", |
| typedefNameDecl(hasName("typedefNameDeclTest1")))); |
| EXPECT_TRUE(matches("using typedefNameDeclTest2 = int;", |
| typedefNameDecl(hasName("typedefNameDeclTest2")))); |
| } |
| |
| TEST(ObjCMessageExprMatcher, SimpleExprs) { |
| // don't find ObjCMessageExpr where none are present |
| EXPECT_TRUE(notMatchesObjC("", objcMessageExpr(anything()))); |
| |
| std::string Objc1String = |
| "@interface Str " |
| " - (Str *)uppercaseString:(Str *)str;" |
| "@end " |
| "@interface foo " |
| "- (void)meth:(Str *)text;" |
| "@end " |
| " " |
| "@implementation foo " |
| "- (void) meth:(Str *)text { " |
| " [self contents];" |
| " Str *up = [text uppercaseString];" |
| "} " |
| "@end "; |
| EXPECT_TRUE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(anything()))); |
| EXPECT_TRUE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(hasSelector("contents")))); |
| EXPECT_TRUE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(matchesSelector("cont*")))); |
| EXPECT_FALSE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(matchesSelector("?cont*")))); |
| EXPECT_TRUE(notMatchesObjC( |
| Objc1String, |
| objcMessageExpr(hasSelector("contents"), hasNullSelector()))); |
| EXPECT_TRUE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(hasSelector("contents"), hasUnarySelector()))); |
| EXPECT_TRUE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(hasSelector("contents"), numSelectorArgs(0)))); |
| EXPECT_TRUE(matchesObjC( |
| Objc1String, |
| objcMessageExpr(matchesSelector("uppercase*"), |
| argumentCountIs(0) |
| ))); |
| } |
| |
| } // namespace ast_matchers |
| } // namespace clang |