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llvm / llvm-project / 98dbcff19cfedb4e27d267310a76d616cd435447 / . / clang / unittests / ASTMatchers / ASTMatchersNodeTest.cpp
blob: ed222a1fdf8778156ad8af8b0620fda5628f2ca2 [file] [log] [blame]
//== unittests/ASTMatchers/ASTMatchersNodeTest.cpp - AST matcher unit tests ==//
//
// 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
//
//===----------------------------------------------------------------------===//
#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_P(ASTMatchersTest, Decl_CXX) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `decl()` that does not depend on C++.
return;
}
EXPECT_TRUE(notMatches("", decl(usingDecl())));
EXPECT_TRUE(
matches("namespace x { class X {}; } using x::X;", decl(usingDecl())));
}
TEST_P(ASTMatchersTest, NameableDeclaration_MatchesVariousDecls) {
DeclarationMatcher NamedX = namedDecl(hasName("X"));
EXPECT_TRUE(matches("typedef int X;", NamedX));
EXPECT_TRUE(matches("int X;", NamedX));
EXPECT_TRUE(matches("void foo() { int X; }", NamedX));
EXPECT_TRUE(matches("enum X { A, B, C };", NamedX));
EXPECT_TRUE(notMatches("#define X 1", NamedX));
}
TEST_P(ASTMatchersTest, NamedDecl_CXX) {
if (!GetParam().isCXX()) {
return;
}
DeclarationMatcher NamedX = namedDecl(hasName("X"));
EXPECT_TRUE(matches("class foo { virtual void X(); };", NamedX));
EXPECT_TRUE(matches("void foo() try { } catch(int X) { }", NamedX));
EXPECT_TRUE(matches("namespace X { }", NamedX));
}
TEST_P(ASTMatchersTest, MatchesNameRE) {
DeclarationMatcher NamedX = namedDecl(matchesName("::X"));
EXPECT_TRUE(matches("typedef int Xa;", NamedX));
EXPECT_TRUE(matches("int Xb;", NamedX));
EXPECT_TRUE(matches("void foo() { int Xgh; }", 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));
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[^:]*$"));
EXPECT_TRUE(matches("int k;", StartsWithK));
EXPECT_TRUE(matches("int kAbc;", StartsWithK));
}
TEST_P(ASTMatchersTest, MatchesNameRE_CXX) {
if (!GetParam().isCXX()) {
return;
}
DeclarationMatcher NamedX = namedDecl(matchesName("::X"));
EXPECT_TRUE(matches("class foo { virtual void Xc(); };", NamedX));
EXPECT_TRUE(matches("void foo() try { } catch(int Xdef) { }", NamedX));
EXPECT_TRUE(matches("namespace Xij { }", NamedX));
DeclarationMatcher StartsWithNo = namedDecl(matchesName("::no"));
EXPECT_TRUE(matches("class foo { virtual void nobody(); };", StartsWithNo));
DeclarationMatcher StartsWithK = namedDecl(matchesName(":k[^:]*$"));
EXPECT_TRUE(matches("namespace x { int kTest; }", StartsWithK));
EXPECT_TRUE(matches("class C { int k; };", StartsWithK));
EXPECT_TRUE(notMatches("class C { int ckc; };", StartsWithK));
EXPECT_TRUE(notMatches("int K;", StartsWithK));
DeclarationMatcher StartsWithKIgnoreCase =
namedDecl(matchesName(":k[^:]*$", llvm::Regex::IgnoreCase));
EXPECT_TRUE(matches("int k;", StartsWithKIgnoreCase));
EXPECT_TRUE(matches("int K;", StartsWithKIgnoreCase));
}
TEST_P(ASTMatchersTest, DeclarationMatcher_MatchClass) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, TranslationUnitDecl) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `translationUnitDecl()` that does not depend on
// C++.
return;
}
StringRef 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_P(ASTMatchersTest, LinkageSpecDecl) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("extern \"C\" { void foo() {}; }", linkageSpecDecl()));
EXPECT_TRUE(notMatches("void foo() {};", linkageSpecDecl()));
}
TEST_P(ASTMatchersTest, ClassTemplateDecl_DoesNotMatchClass) {
if (!GetParam().isCXX()) {
return;
}
DeclarationMatcher ClassX = classTemplateDecl(hasName("X"));
EXPECT_TRUE(notMatches("class X;", ClassX));
EXPECT_TRUE(notMatches("class X {};", ClassX));
}
TEST_P(ASTMatchersTest, ClassTemplateDecl_MatchesClassTemplate) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest,
ClassTemplateDecl_DoesNotMatchClassTemplateExplicitSpecialization) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches(
"template<typename T> class X { };"
"template<> class X<int> { int a; };",
classTemplateDecl(hasName("X"), hasDescendant(fieldDecl(hasName("a"))))));
}
TEST_P(ASTMatchersTest,
ClassTemplateDecl_DoesNotMatchClassTemplatePartialSpecialization) {
if (!GetParam().isCXX()) {
return;
}
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(ASTMatchersTestCUDA, CUDAKernelCallExpr) {
EXPECT_TRUE(matchesWithCuda("__global__ void f() { }"
"void g() { f<<<1, 2>>>(); }",
cudaKernelCallExpr()));
EXPECT_TRUE(notMatchesWithCuda("void f() {}", cudaKernelCallExpr()));
}
TEST(ASTMatchersTestCUDA, HasAttrCUDA) {
EXPECT_TRUE(matchesWithCuda("__attribute__((device)) void f() {}",
hasAttr(clang::attr::CUDADevice)));
EXPECT_FALSE(notMatchesWithCuda("__attribute__((global)) void f() {}",
hasAttr(clang::attr::CUDAGlobal)));
}
TEST_P(ASTMatchersTest, ValueDecl) {
if (!GetParam().isCXX()) {
// FIXME: Fix this test in non-C++ language modes.
return;
}
EXPECT_TRUE(matches("enum EnumType { EnumValue };",
valueDecl(hasType(asString("enum EnumType")))));
EXPECT_TRUE(matches("void FunctionDecl();",
valueDecl(hasType(asString("void (void)")))));
}
TEST_P(ASTMatchersTest, FriendDecl) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("class Y { friend class X; };",
friendDecl(hasType(asString("class X")))));
EXPECT_TRUE(matches("class Y { friend class X; };",
friendDecl(hasType(recordDecl(hasName("X"))))));
EXPECT_TRUE(matches("class Y { friend void f(); };",
functionDecl(hasName("f"), hasParent(friendDecl()))));
}
TEST_P(ASTMatchersTest, EnumDecl_DoesNotMatchClasses) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches("class X {};", enumDecl(hasName("X"))));
}
TEST_P(ASTMatchersTest, EnumDecl_MatchesEnums) {
if (!GetParam().isCXX()) {
// FIXME: Fix this test in non-C++ language modes.
return;
}
EXPECT_TRUE(matches("enum X {};", enumDecl(hasName("X"))));
}
TEST_P(ASTMatchersTest, EnumConstantDecl) {
if (!GetParam().isCXX()) {
// FIXME: Fix this test in non-C++ language modes.
return;
}
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_P(ASTMatchersTest, TagDecl) {
if (!GetParam().isCXX()) {
// FIXME: Fix this test in non-C++ language modes.
return;
}
EXPECT_TRUE(matches("struct X {};", tagDecl(hasName("X"))));
EXPECT_TRUE(matches("union U {};", tagDecl(hasName("U"))));
EXPECT_TRUE(matches("enum E {};", tagDecl(hasName("E"))));
}
TEST_P(ASTMatchersTest, TagDecl_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("class C {};", tagDecl(hasName("C"))));
}
TEST_P(ASTMatchersTest, UnresolvedLookupExpr) {
if (!GetParam().isCXX() || GetParam().hasDelayedTemplateParsing()) {
// FIXME: Fix this test to work with delayed template parsing.
return;
}
EXPECT_TRUE(matches("template<typename T>"
"T foo() { T a; return a; }"
"template<typename T>"
"void bar() {"
" foo<T>();"
"}",
unresolvedLookupExpr()));
}
TEST_P(ASTMatchersTest, UsesADL) {
if (!GetParam().isCXX()) {
return;
}
StatementMatcher ADLMatch = callExpr(usesADL());
StatementMatcher ADLMatchOper = cxxOperatorCallExpr(usesADL());
StringRef NS_Str = R"cpp(
namespace NS {
struct X {};
void f(X);
void operator+(X, X);
}
struct MyX {};
void f(...);
void operator+(MyX, MyX);
)cpp";
auto MkStr = [&](StringRef Body) {
return (NS_Str + "void test_fn() { " + Body + " }").str();
};
EXPECT_TRUE(matches(MkStr("NS::X x; f(x);"), ADLMatch));
EXPECT_TRUE(notMatches(MkStr("NS::X x; NS::f(x);"), ADLMatch));
EXPECT_TRUE(notMatches(MkStr("MyX x; f(x);"), ADLMatch));
EXPECT_TRUE(notMatches(MkStr("NS::X x; using NS::f; f(x);"), ADLMatch));
// Operator call expressions
EXPECT_TRUE(matches(MkStr("NS::X x; x + x;"), ADLMatch));
EXPECT_TRUE(matches(MkStr("NS::X x; x + x;"), ADLMatchOper));
EXPECT_TRUE(notMatches(MkStr("MyX x; x + x;"), ADLMatch));
EXPECT_TRUE(notMatches(MkStr("MyX x; x + x;"), ADLMatchOper));
EXPECT_TRUE(matches(MkStr("NS::X x; operator+(x, x);"), ADLMatch));
EXPECT_TRUE(notMatches(MkStr("NS::X x; NS::operator+(x, x);"), ADLMatch));
}
TEST_P(ASTMatchersTest, CallExpr_CXX) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `callExpr()` that does not depend on C++.
return;
}
// 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_P(ASTMatchersTest, LambdaExpr) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("auto f = [] (int i) { return i; };", lambdaExpr()));
}
TEST_P(ASTMatchersTest, CXXForRangeStmt) {
EXPECT_TRUE(
notMatches("void f() { for (int i; i<5; ++i); }", cxxForRangeStmt()));
}
TEST_P(ASTMatchersTest, CXXForRangeStmt_CXX11) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("int as[] = { 1, 2, 3 };"
"void f() { for (auto &a : as); }",
cxxForRangeStmt()));
}
TEST_P(ASTMatchersTest, SubstNonTypeTemplateParmExpr) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_FALSE(matches("template<int N>\n"
"struct A { static const int n = 0; };\n"
"struct B : public A<42> {};",
traverse(TK_AsIs, substNonTypeTemplateParmExpr())));
EXPECT_TRUE(matches("template<int N>\n"
"struct A { static const int n = N; };\n"
"struct B : public A<42> {};",
traverse(TK_AsIs, substNonTypeTemplateParmExpr())));
}
TEST_P(ASTMatchersTest, NonTypeTemplateParmDecl) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("template <int N> void f();",
nonTypeTemplateParmDecl(hasName("N"))));
EXPECT_TRUE(
notMatches("template <typename T> void f();", nonTypeTemplateParmDecl()));
}
TEST_P(ASTMatchersTest, TemplateTypeParmDecl) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("template <typename T> void f();",
templateTypeParmDecl(hasName("T"))));
EXPECT_TRUE(notMatches("template <int N> void f();", templateTypeParmDecl()));
}
TEST_P(ASTMatchersTest, TemplateTemplateParmDecl) {
if (!GetParam().isCXX())
return;
EXPECT_TRUE(matches("template <template <typename> class Z> void f();",
templateTemplateParmDecl(hasName("Z"))));
EXPECT_TRUE(notMatches("template <typename, int> void f();",
templateTemplateParmDecl()));
}
TEST_P(ASTMatchersTest, UserDefinedLiteral) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("constexpr char operator \"\" _inc (const char i) {"
" return i + 1;"
"}"
"char c = 'a'_inc;",
userDefinedLiteral()));
}
TEST_P(ASTMatchersTest, FlowControl) {
EXPECT_TRUE(matches("void f() { while(1) { break; } }", breakStmt()));
EXPECT_TRUE(matches("void f() { while(1) { 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_P(ASTMatchersTest, CXXOperatorCallExpr) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, ThisPointerType) {
if (!GetParam().isCXX()) {
return;
}
StatementMatcher MethodOnY = traverse(
TK_AsIs, 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_P(ASTMatchersTest, DeclRefExpr) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `declRefExpr()` that does not depend on C++.
return;
}
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_P(ASTMatchersTest, CXXMemberCallExpr) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, UnaryExprOrTypeTraitExpr) {
EXPECT_TRUE(
matches("void x() { int a = sizeof(a); }", unaryExprOrTypeTraitExpr()));
}
TEST_P(ASTMatchersTest, AlignOfExpr) {
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_P(ASTMatchersTest, MemberExpr_DoesNotMatchClasses) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches("class Y { void x() {} };", memberExpr()));
EXPECT_TRUE(notMatches("class Y { void x() {} };", unresolvedMemberExpr()));
EXPECT_TRUE(
notMatches("class Y { void x() {} };", cxxDependentScopeMemberExpr()));
}
TEST_P(ASTMatchersTest, MemberExpr_MatchesMemberFunctionCall) {
if (!GetParam().isCXX() || GetParam().hasDelayedTemplateParsing()) {
// FIXME: Fix this test to work with delayed template parsing.
return;
}
EXPECT_TRUE(matches("class Y { void x() { x(); } };", memberExpr()));
EXPECT_TRUE(matches("class Y { template <class T> void x() { x<T>(); } };",
unresolvedMemberExpr()));
EXPECT_TRUE(matches("template <class T> void x() { T t; t.f(); }",
cxxDependentScopeMemberExpr()));
}
TEST_P(ASTMatchersTest, MemberExpr_MatchesVariable) {
if (!GetParam().isCXX() || GetParam().hasDelayedTemplateParsing()) {
// FIXME: Fix this test to work with delayed template parsing.
return;
}
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()));
EXPECT_TRUE(matches("template <class T>"
"class X : T { void f() { this->T::v; } };",
cxxDependentScopeMemberExpr()));
EXPECT_TRUE(matches("template <class T> class X : T { void f() { T::v; } };",
cxxDependentScopeMemberExpr()));
EXPECT_TRUE(matches("template <class T> void x() { T t; t.v; }",
cxxDependentScopeMemberExpr()));
}
TEST_P(ASTMatchersTest, MemberExpr_MatchesStaticVariable) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, FunctionDecl) {
StatementMatcher CallFunctionF = callExpr(callee(functionDecl(hasName("f"))));
EXPECT_TRUE(matches("void f() { f(); }", CallFunctionF));
EXPECT_TRUE(notMatches("void f() { }", CallFunctionF));
EXPECT_TRUE(notMatches("void f(int);", functionDecl(isVariadic())));
EXPECT_TRUE(notMatches("void f();", functionDecl(isVariadic())));
EXPECT_TRUE(matches("void f(int, ...);", functionDecl(parameterCountIs(1))));
}
TEST_P(ASTMatchersTest, FunctionDecl_C) {
if (!GetParam().isC()) {
return;
}
EXPECT_TRUE(notMatches("void f();", functionDecl(isVariadic())));
EXPECT_TRUE(matches("void f();", functionDecl(parameterCountIs(0))));
}
TEST_P(ASTMatchersTest, FunctionDecl_CXX) {
if (!GetParam().isCXX()) {
return;
}
StatementMatcher CallFunctionF = callExpr(callee(functionDecl(hasName("f"))));
if (!GetParam().hasDelayedTemplateParsing()) {
// FIXME: Fix this test to work with delayed template parsing.
// 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(matches("void f(...);", functionDecl(parameterCountIs(0))));
}
TEST_P(ASTMatchersTest, FunctionDecl_CXX11) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(notMatches("template <typename... Ts> void f(Ts...);",
functionDecl(isVariadic())));
}
TEST_P(ASTMatchersTest,
FunctionTemplateDecl_MatchesFunctionTemplateDeclarations) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("template <typename T> void f(T t) {}",
functionTemplateDecl(hasName("f"))));
}
TEST_P(ASTMatchersTest, FunctionTemplate_DoesNotMatchFunctionDeclarations) {
EXPECT_TRUE(
notMatches("void f(double d);", functionTemplateDecl(hasName("f"))));
EXPECT_TRUE(
notMatches("void f(int t) {}", functionTemplateDecl(hasName("f"))));
}
TEST_P(ASTMatchersTest,
FunctionTemplateDecl_DoesNotMatchFunctionTemplateSpecializations) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, ClassTemplateSpecializationDecl) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, DeclaratorDecl) {
EXPECT_TRUE(matches("int x;", declaratorDecl()));
EXPECT_TRUE(notMatches("struct A {};", declaratorDecl()));
}
TEST_P(ASTMatchersTest, DeclaratorDecl_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches("class A {};", declaratorDecl()));
}
TEST_P(ASTMatchersTest, ParmVarDecl) {
EXPECT_TRUE(matches("void f(int x);", parmVarDecl()));
EXPECT_TRUE(notMatches("void f();", parmVarDecl()));
}
TEST_P(ASTMatchersTest, Matcher_ConstructorCall) {
if (!GetParam().isCXX()) {
return;
}
StatementMatcher Constructor = traverse(TK_AsIs, 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_P(ASTMatchersTest, Match_ConstructorInitializers) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("class C { int i; public: C(int ii) : i(ii) {} };",
cxxCtorInitializer(forField(hasName("i")))));
}
TEST_P(ASTMatchersTest, Matcher_ThisExpr) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, Matcher_BindTemporaryExpression) {
if (!GetParam().isCXX()) {
return;
}
StatementMatcher TempExpression = traverse(TK_AsIs, cxxBindTemporaryExpr());
StringRef 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_P(ASTMatchersTest, MaterializeTemporaryExpr_MatchesTemporaryCXX11CXX14) {
if (GetParam().Language != Lang_CXX11 && GetParam().Language != Lang_CXX14) {
return;
}
StatementMatcher TempExpression =
traverse(TK_AsIs, materializeTemporaryExpr());
EXPECT_TRUE(matches("class string { public: string(); }; "
"string GetStringByValue();"
"void FunctionTakesString(string s);"
"void run() { FunctionTakesString(GetStringByValue()); }",
TempExpression));
}
TEST_P(ASTMatchersTest, MaterializeTemporaryExpr_MatchesTemporary) {
if (!GetParam().isCXX()) {
return;
}
StringRef ClassString = "class string { public: string(); int length(); }; ";
StatementMatcher TempExpression =
traverse(TK_AsIs, materializeTemporaryExpr());
EXPECT_TRUE(notMatches(ClassString +
"string* GetStringPointer(); "
"void FunctionTakesStringPtr(string* s);"
"void run() {"
" string* s = GetStringPointer();"
" FunctionTakesStringPtr(GetStringPointer());"
" FunctionTakesStringPtr(s);"
"}",
TempExpression));
EXPECT_TRUE(matches(ClassString +
"string GetStringByValue();"
"void run() { int k = GetStringByValue().length(); }",
TempExpression));
EXPECT_TRUE(notMatches(ClassString + "string GetStringByValue();"
"void run() { GetStringByValue(); }",
TempExpression));
}
TEST_P(ASTMatchersTest, Matcher_NewExpression) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, Matcher_DeleteExpression) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
matches("struct A {}; void f(A* a) { delete a; }", cxxDeleteExpr()));
}
TEST_P(ASTMatchersTest, Matcher_NoexceptExpression) {
if (!GetParam().isCXX11OrLater()) {
return;
}
StatementMatcher NoExcept = cxxNoexceptExpr();
EXPECT_TRUE(matches("void foo(); bool bar = noexcept(foo());", NoExcept));
EXPECT_TRUE(
matches("void foo() noexcept; bool bar = noexcept(foo());", NoExcept));
EXPECT_TRUE(notMatches("void foo() noexcept;", NoExcept));
EXPECT_TRUE(notMatches("void foo() noexcept(0+1);", NoExcept));
EXPECT_TRUE(matches("void foo() noexcept(noexcept(1+1));", NoExcept));
}
TEST_P(ASTMatchersTest, Matcher_DefaultArgument) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, StringLiteral) {
StatementMatcher Literal = stringLiteral();
EXPECT_TRUE(matches("const char *s = \"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_P(ASTMatchersTest, StringLiteral_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("const wchar_t *s = L\"string\";", stringLiteral()));
}
TEST_P(ASTMatchersTest, CharacterLiteral) {
EXPECT_TRUE(matches("const char c = 'c';", characterLiteral()));
EXPECT_TRUE(notMatches("const char c = 0x1;", characterLiteral()));
}
TEST_P(ASTMatchersTest, CharacterLiteral_CXX) {
if (!GetParam().isCXX()) {
return;
}
// wide character
EXPECT_TRUE(matches("const char c = L'c';", characterLiteral()));
// wide character, Hex encoded, NOT MATCHED!
EXPECT_TRUE(notMatches("const wchar_t c = 0x2126;", characterLiteral()));
}
TEST_P(ASTMatchersTest, IntegerLiteral) {
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));
// Negative integers.
EXPECT_TRUE(
matches("int i = -10;",
unaryOperator(hasOperatorName("-"),
hasUnaryOperand(integerLiteral(equals(10))))));
}
TEST_P(ASTMatchersTest, FloatLiteral) {
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_P(ASTMatchersTest, CXXNullPtrLiteralExpr) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("int* i = nullptr;", cxxNullPtrLiteralExpr()));
}
TEST_P(ASTMatchersTest, ChooseExpr) {
EXPECT_TRUE(matches("void f() { (void)__builtin_choose_expr(1, 2, 3); }",
chooseExpr()));
}
TEST_P(ASTMatchersTest, GNUNullExpr) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("int* i = __null;", gnuNullExpr()));
}
TEST_P(ASTMatchersTest, GenericSelectionExpr) {
EXPECT_TRUE(matches("void f() { (void)_Generic(1, int: 1, float: 2.0); }",
genericSelectionExpr()));
}
TEST_P(ASTMatchersTest, AtomicExpr) {
EXPECT_TRUE(matches("void foo() { int *ptr; __atomic_load_n(ptr, 1); }",
atomicExpr()));
}
TEST_P(ASTMatchersTest, Initializers_C99) {
if (!GetParam().isC99OrLater()) {
return;
}
EXPECT_TRUE(matches(
"void foo() { struct point { double x; double y; };"
" struct point ptarray[10] = "
" { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; }",
initListExpr(hasSyntacticForm(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(ASTMatchersTest, Initializers_CXX) {
if (GetParam().Language != Lang_CXX03) {
// FIXME: Make this test pass with other C++ standard versions.
return;
}
EXPECT_TRUE(matches(
"void foo() { struct point { double x; double y; };"
" struct point ptarray[10] = "
" { [2].y = 1.0, [2].x = 2.0, [0].x = 1.0 }; }",
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))))))));
}
TEST_P(ASTMatchersTest, ParenListExpr) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
matches("template<typename T> class foo { void bar() { foo X(*this); } };"
"template class foo<int>;",
varDecl(hasInitializer(parenListExpr(has(unaryOperator()))))));
}
TEST_P(ASTMatchersTest, StmtExpr) {
EXPECT_TRUE(matches("void declToImport() { int C = ({int X=4; X;}); }",
varDecl(hasInitializer(stmtExpr()))));
}
TEST_P(ASTMatchersTest, PredefinedExpr) {
// __func__ expands as StringLiteral("foo")
EXPECT_TRUE(matches("void foo() { __func__; }",
predefinedExpr(hasType(asString("const char[4]")),
has(stringLiteral()))));
}
TEST_P(ASTMatchersTest, AsmStatement) {
EXPECT_TRUE(matches("void foo() { __asm(\"mov al, 2\"); }", asmStmt()));
}
TEST_P(ASTMatchersTest, HasCondition) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `hasCondition()` that does not depend on C++.
return;
}
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_P(ASTMatchersTest, ConditionalOperator) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `conditionalOperator()` that does not depend on
// C++.
return;
}
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_P(ASTMatchersTest, BinaryConditionalOperator) {
if (!GetParam().isCXX()) {
// FIXME: This test should work in non-C++ language modes.
return;
}
StatementMatcher AlwaysOne = traverse(
TK_AsIs, 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_P(ASTMatchersTest, ArraySubscriptExpr) {
EXPECT_TRUE(
matches("int i[2]; void f() { i[1] = 1; }", arraySubscriptExpr()));
EXPECT_TRUE(notMatches("int i; void f() { i = 1; }", arraySubscriptExpr()));
}
TEST_P(ASTMatchersTest, ForStmt) {
EXPECT_TRUE(matches("void f() { for(;;); }", forStmt()));
EXPECT_TRUE(matches("void f() { if(1) for(;;); }", forStmt()));
}
TEST_P(ASTMatchersTest, ForStmt_CXX11) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(notMatches("int as[] = { 1, 2, 3 };"
"void f() { for (auto &a : as); }",
forStmt()));
}
TEST_P(ASTMatchersTest, ForStmt_NoFalsePositives) {
EXPECT_TRUE(notMatches("void f() { ; }", forStmt()));
EXPECT_TRUE(notMatches("void f() { if(1); }", forStmt()));
}
TEST_P(ASTMatchersTest, CompoundStatement) {
EXPECT_TRUE(notMatches("void f();", compoundStmt()));
EXPECT_TRUE(matches("void f() {}", compoundStmt()));
EXPECT_TRUE(matches("void f() {{}}", compoundStmt()));
}
TEST_P(ASTMatchersTest, CompoundStatement_DoesNotMatchEmptyStruct) {
if (!GetParam().isCXX()) {
// FIXME: Add a similar test that does not depend on C++.
return;
}
// 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_P(ASTMatchersTest, CastExpr_MatchesExplicitCasts) {
EXPECT_TRUE(matches("void *p = (void *)(&p);", castExpr()));
}
TEST_P(ASTMatchersTest, CastExpr_MatchesExplicitCasts_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("char *p = reinterpret_cast<char *>(&p);", castExpr()));
EXPECT_TRUE(matches("char q, *p = const_cast<char *>(&q);", castExpr()));
EXPECT_TRUE(matches("char c = char(0);", castExpr()));
}
TEST_P(ASTMatchersTest, CastExpression_MatchesImplicitCasts) {
// This test creates an implicit cast from int to char.
EXPECT_TRUE(matches("char c = 0;", traverse(TK_AsIs, castExpr())));
// This test creates an implicit cast from lvalue to rvalue.
EXPECT_TRUE(matches("void f() { char c = 0, d = c; }",
traverse(TK_AsIs, castExpr())));
}
TEST_P(ASTMatchersTest, CastExpr_DoesNotMatchNonCasts) {
if (GetParam().Language == Lang_C89 || GetParam().Language == Lang_C99) {
// This does have a cast in C
EXPECT_TRUE(matches("char c = '0';", implicitCastExpr()));
} else {
EXPECT_TRUE(notMatches("char c = '0';", castExpr()));
}
EXPECT_TRUE(notMatches("int i = (0);", castExpr()));
EXPECT_TRUE(notMatches("int i = 0;", castExpr()));
}
TEST_P(ASTMatchersTest, CastExpr_DoesNotMatchNonCasts_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches("char c, &q = c;", castExpr()));
}
TEST_P(ASTMatchersTest, CXXReinterpretCastExpr) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("char* p = reinterpret_cast<char*>(&p);",
cxxReinterpretCastExpr()));
}
TEST_P(ASTMatchersTest, CXXReinterpretCastExpr_DoesNotMatchOtherCasts) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, CXXFunctionalCastExpr_MatchesSimpleCase) {
if (!GetParam().isCXX()) {
return;
}
StringRef foo_class = "class Foo { public: Foo(const char*); };";
EXPECT_TRUE(matches(foo_class + "void r() { Foo f = Foo(\"hello world\"); }",
cxxFunctionalCastExpr()));
}
TEST_P(ASTMatchersTest, CXXFunctionalCastExpr_DoesNotMatchOtherCasts) {
if (!GetParam().isCXX()) {
return;
}
StringRef 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_P(ASTMatchersTest, CXXDynamicCastExpr) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("struct B { virtual ~B() {} }; struct D : B {};"
"B b;"
"D* p = dynamic_cast<D*>(&b);",
cxxDynamicCastExpr()));
}
TEST_P(ASTMatchersTest, CXXStaticCastExpr_MatchesSimpleCase) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("void* p(static_cast<void*>(&p));", cxxStaticCastExpr()));
}
TEST_P(ASTMatchersTest, CXXStaticCastExpr_DoesNotMatchOtherCasts) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, CStyleCastExpr_MatchesSimpleCase) {
EXPECT_TRUE(matches("int i = (int) 2.2f;", cStyleCastExpr()));
}
TEST_P(ASTMatchersTest, CStyleCastExpr_DoesNotMatchOtherCasts) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, ImplicitCastExpr_MatchesSimpleCase) {
// This test creates an implicit const cast.
EXPECT_TRUE(
matches("void f() { int x = 0; const int y = x; }",
traverse(TK_AsIs, varDecl(hasInitializer(implicitCastExpr())))));
// This test creates an implicit cast from int to char.
EXPECT_TRUE(
matches("char c = 0;",
traverse(TK_AsIs, varDecl(hasInitializer(implicitCastExpr())))));
// This test creates an implicit array-to-pointer cast.
EXPECT_TRUE(
matches("int arr[6]; int *p = arr;",
traverse(TK_AsIs, varDecl(hasInitializer(implicitCastExpr())))));
}
TEST_P(ASTMatchersTest, ImplicitCastExpr_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);", varDecl(hasInitializer(implicitCastExpr()))));
EXPECT_TRUE(notMatches("void f() { int x = 0; double d = (double) x; }",
varDecl(hasInitializer(implicitCastExpr()))));
}
TEST_P(ASTMatchersTest, ImplicitCastExpr_DoesNotMatchIncorrectly_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches("int x = 0, &y = x;",
varDecl(hasInitializer(implicitCastExpr()))));
EXPECT_TRUE(notMatches("const int *p; int *q = const_cast<int *>(p);",
varDecl(hasInitializer(implicitCastExpr()))));
}
TEST_P(ASTMatchersTest, Stmt_DoesNotMatchDeclarations) {
EXPECT_TRUE(notMatches("struct X {};", stmt()));
}
TEST_P(ASTMatchersTest, Stmt_MatchesCompoundStatments) {
EXPECT_TRUE(matches("void x() {}", stmt()));
}
TEST_P(ASTMatchersTest, DeclStmt_DoesNotMatchCompoundStatements) {
EXPECT_TRUE(notMatches("void x() {}", declStmt()));
}
TEST_P(ASTMatchersTest, DeclStmt_MatchesVariableDeclarationStatements) {
EXPECT_TRUE(matches("void x() { int a; }", declStmt()));
}
TEST_P(ASTMatchersTest, ExprWithCleanups_MatchesExprWithCleanups) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
matches("struct Foo { ~Foo(); };"
"const Foo f = Foo();",
traverse(TK_AsIs, varDecl(hasInitializer(exprWithCleanups())))));
EXPECT_FALSE(
matches("struct Foo { }; Foo a;"
"const Foo f = a;",
traverse(TK_AsIs, varDecl(hasInitializer(exprWithCleanups())))));
}
TEST_P(ASTMatchersTest, InitListExpr) {
EXPECT_TRUE(matches("int a[] = { 1, 2 };",
initListExpr(hasType(asString("int[2]")))));
EXPECT_TRUE(matches("struct B { int x, y; }; struct B b = { 5, 6 };",
initListExpr(hasType(recordDecl(hasName("B"))))));
EXPECT_TRUE(
matches("int i[1] = {42, [0] = 43};", integerLiteral(equals(42))));
}
TEST_P(ASTMatchersTest, InitListExpr_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("struct S { S(void (*a)()); };"
"void f();"
"S s[1] = { &f };",
declRefExpr(to(functionDecl(hasName("f"))))));
}
TEST_P(ASTMatchersTest,
CXXStdInitializerListExpression_MatchesCXXStdInitializerListExpression) {
if (!GetParam().isCXX11OrLater()) {
return;
}
StringRef code = "namespace std {"
"template <typename> class initializer_list {"
" public: initializer_list() noexcept {}"
"};"
"}"
"struct A {"
" A(std::initializer_list<int>) {}"
"};";
EXPECT_TRUE(matches(
code + "A a{0};",
traverse(TK_AsIs, cxxConstructExpr(has(cxxStdInitializerListExpr()),
hasDeclaration(cxxConstructorDecl(
ofClass(hasName("A"))))))));
EXPECT_TRUE(matches(
code + "A a = {0};",
traverse(TK_AsIs, cxxConstructExpr(has(cxxStdInitializerListExpr()),
hasDeclaration(cxxConstructorDecl(
ofClass(hasName("A"))))))));
EXPECT_TRUE(notMatches("int a[] = { 1, 2 };", cxxStdInitializerListExpr()));
EXPECT_TRUE(notMatches("struct B { int x, y; }; B b = { 5, 6 };",
cxxStdInitializerListExpr()));
}
TEST_P(ASTMatchersTest, UsingDecl_MatchesUsingDeclarations) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("namespace X { int x; } using X::x;", usingDecl()));
}
TEST_P(ASTMatchersTest, UsingDecl_MatchesShadowUsingDelcarations) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("namespace f { int a; } using f::a;",
usingDecl(hasAnyUsingShadowDecl(hasName("a")))));
}
TEST_P(ASTMatchersTest, UsingEnumDecl_MatchesUsingEnumDeclarations) {
if (!GetParam().isCXX20OrLater()) {
return;
}
EXPECT_TRUE(
matches("namespace X { enum x {}; } using enum X::x;", usingEnumDecl()));
}
TEST_P(ASTMatchersTest, UsingEnumDecl_MatchesShadowUsingDeclarations) {
if (!GetParam().isCXX20OrLater()) {
return;
}
EXPECT_TRUE(matches("namespace f { enum a {b}; } using enum f::a;",
usingEnumDecl(hasAnyUsingShadowDecl(hasName("b")))));
}
TEST_P(ASTMatchersTest, UsingDirectiveDecl_MatchesUsingNamespace) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("namespace X { int x; } using namespace X;",
usingDirectiveDecl()));
EXPECT_FALSE(
matches("namespace X { int x; } using X::x;", usingDirectiveDecl()));
}
TEST_P(ASTMatchersTest, WhileStmt) {
EXPECT_TRUE(notMatches("void x() {}", whileStmt()));
EXPECT_TRUE(matches("void x() { while(1); }", whileStmt()));
EXPECT_TRUE(notMatches("void x() { do {} while(1); }", whileStmt()));
}
TEST_P(ASTMatchersTest, DoStmt_MatchesDoLoops) {
EXPECT_TRUE(matches("void x() { do {} while(1); }", doStmt()));
EXPECT_TRUE(matches("void x() { do ; while(0); }", doStmt()));
}
TEST_P(ASTMatchersTest, DoStmt_DoesNotMatchWhileLoops) {
EXPECT_TRUE(notMatches("void x() { while(1) {} }", doStmt()));
}
TEST_P(ASTMatchersTest, 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_P(ASTMatchersTest, 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_P(ASTMatchersTest, CxxExceptionHandling_SimpleCases) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, ParenExpr_SimpleCases) {
EXPECT_TRUE(matches("int i = (3);", traverse(TK_AsIs, parenExpr())));
EXPECT_TRUE(matches("int i = (3 + 7);", traverse(TK_AsIs, parenExpr())));
EXPECT_TRUE(notMatches("int i = 3;", traverse(TK_AsIs, parenExpr())));
EXPECT_TRUE(notMatches("int f() { return 1; }; void g() { int a = f(); }",
traverse(TK_AsIs, parenExpr())));
}
TEST_P(ASTMatchersTest, IgnoringParens) {
EXPECT_FALSE(matches("const char* str = (\"my-string\");",
traverse(TK_AsIs, implicitCastExpr(hasSourceExpression(
stringLiteral())))));
EXPECT_TRUE(
matches("const char* str = (\"my-string\");",
traverse(TK_AsIs, implicitCastExpr(hasSourceExpression(
ignoringParens(stringLiteral()))))));
}
TEST_P(ASTMatchersTest, QualType) {
EXPECT_TRUE(matches("struct S {};", qualType().bind("loc")));
}
TEST_P(ASTMatchersTest, ConstantArrayType) {
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_P(ASTMatchersTest, DependentSizedArrayType) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, IncompleteArrayType) {
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_P(ASTMatchersTest, VariableArrayType) {
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_P(ASTMatchersTest, AtomicType) {
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_P(ASTMatchersTest, AutoType) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("auto i = 2;", autoType()));
EXPECT_TRUE(matches("int v[] = { 2, 3 }; void f() { for (int i : v) {} }",
autoType()));
EXPECT_TRUE(matches("auto i = 2;", varDecl(hasType(isInteger()))));
EXPECT_TRUE(matches("struct X{}; auto x = X{};",
varDecl(hasType(recordDecl(hasName("X"))))));
// 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_P(ASTMatchersTest, DecltypeType) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("decltype(1 + 1) sum = 1 + 1;", decltypeType()));
EXPECT_TRUE(matches("decltype(1 + 1) sum = 1 + 1;",
decltypeType(hasUnderlyingType(isInteger()))));
}
TEST_P(ASTMatchersTest, FunctionType) {
EXPECT_TRUE(matches("int (*f)(int);", functionType()));
EXPECT_TRUE(matches("void f(int i) {}", functionType()));
}
TEST_P(ASTMatchersTest, IgnoringParens_Type) {
EXPECT_TRUE(
notMatches("void (*fp)(void);", pointerType(pointee(functionType()))));
EXPECT_TRUE(matches("void (*fp)(void);",
pointerType(pointee(ignoringParens(functionType())))));
}
TEST_P(ASTMatchersTest, FunctionProtoType) {
EXPECT_TRUE(matches("int (*f)(int);", functionProtoType()));
EXPECT_TRUE(matches("void f(int i);", functionProtoType()));
EXPECT_TRUE(matches("void f(void);", functionProtoType(parameterCountIs(0))));
}
TEST_P(ASTMatchersTest, FunctionProtoType_C) {
if (!GetParam().isC()) {
return;
}
EXPECT_TRUE(notMatches("void f();", functionProtoType()));
}
TEST_P(ASTMatchersTest, FunctionProtoType_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("void f();", functionProtoType(parameterCountIs(0))));
}
TEST_P(ASTMatchersTest, ParenType) {
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_P(ASTMatchersTest, PointerType) {
// 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"))),
// std::make_unique<VerifyIdIsBoundTo<TypeLoc>>("loc", 1)));
// EXPECT_TRUE(matchAndVerifyResultTrue(
// "int* a;",
// pointerTypeLoc().bind("loc"),
// std::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()))));
StringRef 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()))));
}
TEST_P(ASTMatchersTest, PointerType_CXX) {
if (!GetParam().isCXX()) {
return;
}
StringRef 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 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()))));
}
TEST_P(ASTMatchersTest, PointerType_CXX11) {
if (!GetParam().isCXX11OrLater()) {
return;
}
StringRef 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_P(ASTMatchersTest, AutoRefTypes) {
if (!GetParam().isCXX11OrLater()) {
return;
}
StringRef 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_P(ASTMatchersTest, EnumType) {
EXPECT_TRUE(
matches("enum Color { Green }; enum Color color;", loc(enumType())));
}
TEST_P(ASTMatchersTest, EnumType_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("enum Color { Green }; Color color;", loc(enumType())));
}
TEST_P(ASTMatchersTest, EnumType_CXX11) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(
matches("enum class Color { Green }; Color color;", loc(enumType())));
}
TEST_P(ASTMatchersTest, PointerType_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_P(ASTMatchersTest, TypedefType) {
EXPECT_TRUE(matches("typedef int X; X a;",
varDecl(hasName("a"), hasType(typedefType()))));
}
TEST_P(ASTMatchersTest, TemplateSpecializationType) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("template <typename T> class A{}; A<int> a;",
templateSpecializationType()));
}
TEST_P(ASTMatchersTest, DeducedTemplateSpecializationType) {
if (!GetParam().isCXX17OrLater()) {
return;
}
EXPECT_TRUE(
matches("template <typename T> class A{ public: A(T) {} }; A a(1);",
deducedTemplateSpecializationType()));
}
TEST_P(ASTMatchersTest, RecordType) {
EXPECT_TRUE(matches("struct S {}; struct S s;",
recordType(hasDeclaration(recordDecl(hasName("S"))))));
EXPECT_TRUE(notMatches("int i;",
recordType(hasDeclaration(recordDecl(hasName("S"))))));
}
TEST_P(ASTMatchersTest, RecordType_CXX) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("class C {}; C c;", recordType()));
EXPECT_TRUE(matches("struct S {}; S s;",
recordType(hasDeclaration(recordDecl(hasName("S"))))));
}
TEST_P(ASTMatchersTest, ElaboratedType) {
if (!GetParam().isCXX()) {
// FIXME: Add a test for `elaboratedType()` that does not depend on C++.
return;
}
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_P(ASTMatchersTest, SubstTemplateTypeParmType) {
if (!GetParam().isCXX()) {
return;
}
StringRef 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_P(ASTMatchersTest, NestedNameSpecifier) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, Attr) {
// Windows adds some implicit attributes.
bool AutomaticAttributes = StringRef(GetParam().Target).contains("win32");
if (GetParam().isCXX11OrLater()) {
EXPECT_TRUE(matches("struct [[clang::warn_unused_result]] F{};", attr()));
// Unknown attributes are not parsed into an AST node.
if (!AutomaticAttributes) {
EXPECT_TRUE(notMatches("int x [[unknownattr]];", attr()));
}
}
if (GetParam().isCXX17OrLater()) {
EXPECT_TRUE(matches("struct [[nodiscard]] F{};", attr()));
}
EXPECT_TRUE(matches("int x(int * __attribute__((nonnull)) );", attr()));
if (!AutomaticAttributes) {
EXPECT_TRUE(notMatches("struct F{}; int x(int *);", attr()));
// Some known attributes are not parsed into an AST node.
EXPECT_TRUE(notMatches("typedef int x __attribute__((ext_vector_type(1)));",
attr()));
}
}
TEST_P(ASTMatchersTest, NullStmt) {
EXPECT_TRUE(matches("void f() {int i;;}", nullStmt()));
EXPECT_TRUE(notMatches("void f() {int i;}", nullStmt()));
}
TEST_P(ASTMatchersTest, NamespaceAliasDecl) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("namespace test {} namespace alias = ::test;",
namespaceAliasDecl(hasName("alias"))));
}
TEST_P(ASTMatchersTest, NestedNameSpecifier_MatchesTypes) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest, NestedNameSpecifier_MatchesNamespaceDecls) {
if (!GetParam().isCXX()) {
return;
}
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_P(ASTMatchersTest,
NestedNameSpecifier_MatchesNestedNameSpecifierPrefixes) {
if (!GetParam().isCXX()) {
return;
}
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"))))))));
EXPECT_TRUE(matches(
"namespace N { struct A { struct B { struct C {}; }; }; } N::A::B::C c;",
nestedNameSpecifierLoc(hasPrefix(
specifiesTypeLoc(loc(qualType(asString("struct N::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_P(ASTMatchersTest, IsEqualTo_MatchesNodesByIdentity) {
EXPECT_TRUE(matchAndVerifyResultTrue(
"void f() { if (1) if(1) {} }", ifStmt().bind(""),
std::make_unique<VerifyAncestorHasChildIsEqual<IfStmt>>()));
}
TEST_P(ASTMatchersTest, IsEqualTo_MatchesNodesByIdentity_Cxx) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matchAndVerifyResultTrue(
"class X { class Y {}; };", recordDecl(hasName("::X::Y")).bind(""),
std::make_unique<VerifyAncestorHasChildIsEqual<CXXRecordDecl>>()));
EXPECT_TRUE(matchAndVerifyResultTrue(
"class X { class Y {} y; };",
fieldDecl(hasName("y"), hasType(type().bind(""))).bind("decl"),
std::make_unique<VerifyAncestorHasChildIsEqual<Type>>()));
}
TEST_P(ASTMatchersTest, TypedefDecl) {
EXPECT_TRUE(matches("typedef int typedefDeclTest;",
typedefDecl(hasName("typedefDeclTest"))));
}
TEST_P(ASTMatchersTest, TypedefDecl_Cxx) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(notMatches("using typedefDeclTest = int;",
typedefDecl(hasName("typedefDeclTest"))));
}
TEST_P(ASTMatchersTest, TypeAliasDecl) {
EXPECT_TRUE(notMatches("typedef int typeAliasTest;",
typeAliasDecl(hasName("typeAliasTest"))));
}
TEST_P(ASTMatchersTest, TypeAliasDecl_CXX) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("using typeAliasTest = int;",
typeAliasDecl(hasName("typeAliasTest"))));
}
TEST_P(ASTMatchersTest, TypedefNameDecl) {
EXPECT_TRUE(matches("typedef int typedefNameDeclTest1;",
typedefNameDecl(hasName("typedefNameDeclTest1"))));
}
TEST_P(ASTMatchersTest, TypedefNameDecl_CXX) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("using typedefNameDeclTest = int;",
typedefNameDecl(hasName("typedefNameDeclTest"))));
}
TEST_P(ASTMatchersTest, TypeAliasTemplateDecl) {
if (!GetParam().isCXX11OrLater()) {
return;
}
StringRef Code = R"(
template <typename T>
class X { T t; };
template <typename T>
using typeAliasTemplateDecl = X<T>;
using typeAliasDecl = X<int>;
)";
EXPECT_TRUE(
matches(Code, typeAliasTemplateDecl(hasName("typeAliasTemplateDecl"))));
EXPECT_TRUE(
notMatches(Code, typeAliasTemplateDecl(hasName("typeAliasDecl"))));
}
TEST_P(ASTMatchersTest, QualifiedTypeLocTest_BindsToConstIntVarDecl) {
EXPECT_TRUE(matches("const int x = 0;",
qualifiedTypeLoc(loc(asString("const int")))));
}
TEST_P(ASTMatchersTest, QualifiedTypeLocTest_BindsToConstIntFunctionDecl) {
EXPECT_TRUE(matches("const int f() { return 5; }",
qualifiedTypeLoc(loc(asString("const int")))));
}
TEST_P(ASTMatchersTest, QualifiedTypeLocTest_DoesNotBindToUnqualifiedVarDecl) {
EXPECT_TRUE(notMatches("int x = 0;", qualifiedTypeLoc(loc(asString("int")))));
}
TEST_P(ASTMatchersTest, QualifiedTypeLocTest_IntDoesNotBindToConstIntDecl) {
EXPECT_TRUE(
notMatches("const int x = 0;", qualifiedTypeLoc(loc(asString("int")))));
}
TEST_P(ASTMatchersTest, QualifiedTypeLocTest_IntDoesNotBindToConstFloatDecl) {
EXPECT_TRUE(
notMatches("const float x = 0;", qualifiedTypeLoc(loc(asString("int")))));
}
TEST_P(ASTMatchersTest, PointerTypeLocTest_BindsToAnyPointerTypeLoc) {
auto matcher = varDecl(hasName("x"), hasTypeLoc(pointerTypeLoc()));
EXPECT_TRUE(matches("int* x;", matcher));
EXPECT_TRUE(matches("float* x;", matcher));
EXPECT_TRUE(matches("char* x;", matcher));
EXPECT_TRUE(matches("void* x;", matcher));
}
TEST_P(ASTMatchersTest, PointerTypeLocTest_DoesNotBindToNonPointerTypeLoc) {
auto matcher = varDecl(hasName("x"), hasTypeLoc(pointerTypeLoc()));
EXPECT_TRUE(notMatches("int x;", matcher));
EXPECT_TRUE(notMatches("float x;", matcher));
EXPECT_TRUE(notMatches("char x;", matcher));
}
TEST_P(ASTMatchersTest, ReferenceTypeLocTest_BindsToAnyReferenceTypeLoc) {
if (!GetParam().isCXX()) {
return;
}
auto matcher = varDecl(hasName("r"), hasTypeLoc(referenceTypeLoc()));
EXPECT_TRUE(matches("int rr = 3; int& r = rr;", matcher));
EXPECT_TRUE(matches("int rr = 3; auto& r = rr;", matcher));
EXPECT_TRUE(matches("int rr = 3; const int& r = rr;", matcher));
EXPECT_TRUE(matches("float rr = 3.0; float& r = rr;", matcher));
EXPECT_TRUE(matches("char rr = 'a'; char& r = rr;", matcher));
}
TEST_P(ASTMatchersTest, ReferenceTypeLocTest_DoesNotBindToNonReferenceTypeLoc) {
auto matcher = varDecl(hasName("r"), hasTypeLoc(referenceTypeLoc()));
EXPECT_TRUE(notMatches("int r;", matcher));
EXPECT_TRUE(notMatches("int r = 3;", matcher));
EXPECT_TRUE(notMatches("const int r = 3;", matcher));
EXPECT_TRUE(notMatches("int* r;", matcher));
EXPECT_TRUE(notMatches("float r;", matcher));
EXPECT_TRUE(notMatches("char r;", matcher));
}
TEST_P(ASTMatchersTest, ReferenceTypeLocTest_BindsToAnyRvalueReferenceTypeLoc) {
if (!GetParam().isCXX()) {
return;
}
auto matcher = varDecl(hasName("r"), hasTypeLoc(referenceTypeLoc()));
EXPECT_TRUE(matches("int&& r = 3;", matcher));
EXPECT_TRUE(matches("auto&& r = 3;", matcher));
EXPECT_TRUE(matches("float&& r = 3.0;", matcher));
}
TEST_P(
ASTMatchersTest,
TemplateSpecializationTypeLocTest_BindsToTemplateSpecializationExplicitInstantiation) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
matches("template <typename T> class C {}; template class C<int>;",
classTemplateSpecializationDecl(
hasName("C"), hasTypeLoc(templateSpecializationTypeLoc()))));
}
TEST_P(ASTMatchersTest,
TemplateSpecializationTypeLocTest_BindsToVarDeclTemplateSpecialization) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches(
"template <typename T> class C {}; C<char> var;",
varDecl(hasName("var"), hasTypeLoc(templateSpecializationTypeLoc()))));
}
TEST_P(
ASTMatchersTest,
TemplateSpecializationTypeLocTest_DoesNotBindToNonTemplateSpecialization) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(notMatches(
"class C {}; C var;",
varDecl(hasName("var"), hasTypeLoc(templateSpecializationTypeLoc()))));
}
TEST_P(ASTMatchersTest,
ElaboratedTypeLocTest_BindsToElaboratedObjectDeclaration) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("class C {}; class C c;",
varDecl(hasName("c"), hasTypeLoc(elaboratedTypeLoc()))));
}
TEST_P(ASTMatchersTest,
ElaboratedTypeLocTest_BindsToNamespaceElaboratedObjectDeclaration) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(matches("namespace N { class D {}; } N::D d;",
varDecl(hasName("d"), hasTypeLoc(elaboratedTypeLoc()))));
}
TEST_P(ASTMatchersTest,
ElaboratedTypeLocTest_BindsToElaboratedStructDeclaration) {
EXPECT_TRUE(matches("struct s {}; struct s ss;",
varDecl(hasName("ss"), hasTypeLoc(elaboratedTypeLoc()))));
}
TEST_P(ASTMatchersTest,
ElaboratedTypeLocTest_DoesNotBindToNonElaboratedObjectDeclaration) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
notMatches("class C {}; C c;",
varDecl(hasName("c"), hasTypeLoc(elaboratedTypeLoc()))));
}
TEST_P(
ASTMatchersTest,
ElaboratedTypeLocTest_DoesNotBindToNamespaceNonElaboratedObjectDeclaration) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
notMatches("namespace N { class D {}; } using N::D; D d;",
varDecl(hasName("d"), hasTypeLoc(elaboratedTypeLoc()))));
}
TEST_P(ASTMatchersTest,
ElaboratedTypeLocTest_DoesNotBindToNonElaboratedStructDeclaration) {
if (!GetParam().isCXX()) {
return;
}
EXPECT_TRUE(
notMatches("struct s {}; s ss;",
varDecl(hasName("ss"), hasTypeLoc(elaboratedTypeLoc()))));
}
TEST_P(ASTMatchersTest, LambdaCaptureTest) {
if (!GetParam().isCXX11OrLater()) {
return;
}
EXPECT_TRUE(matches("int main() { int cc; auto f = [cc](){ return cc; }; }",
lambdaExpr(hasAnyCapture(lambdaCapture()))));
}
TEST_P(ASTMatchersTest, LambdaCaptureTest_BindsToCaptureOfVarDecl) {
if (!GetParam().isCXX11OrLater()) {
return;
}
auto matcher = lambdaExpr(
hasAnyCapture(lambdaCapture(capturesVar(varDecl(hasName("cc"))))));
EXPECT_TRUE(matches("int main() { int cc; auto f = [cc](){ return cc; }; }",
matcher));
EXPECT_TRUE(matches("int main() { int cc; auto f = [&cc](){ return cc; }; }",
matcher));
EXPECT_TRUE(
matches("int main() { int cc; auto f = [=](){ return cc; }; }", matcher));
EXPECT_TRUE(
matches("int main() { int cc; auto f = [&](){ return cc; }; }", matcher));
}
TEST_P(ASTMatchersTest, LambdaCaptureTest_BindsToCaptureWithInitializer) {
if (!GetParam().isCXX14OrLater()) {
return;
}
auto matcher = lambdaExpr(hasAnyCapture(lambdaCapture(capturesVar(
varDecl(hasName("cc"), hasInitializer(integerLiteral(equals(1))))))));
EXPECT_TRUE(
matches("int main() { auto lambda = [cc = 1] {return cc;}; }", matcher));
EXPECT_TRUE(
matches("int main() { int cc = 2; auto lambda = [cc = 1] {return cc;}; }",
matcher));
}
TEST_P(ASTMatchersTest, LambdaCaptureTest_DoesNotBindToCaptureOfVarDecl) {
if (!GetParam().isCXX11OrLater()) {
return;
}
auto matcher = lambdaExpr(
hasAnyCapture(lambdaCapture(capturesVar(varDecl(hasName("cc"))))));
EXPECT_FALSE(matches("int main() { auto f = [](){ return 5; }; }", matcher));
EXPECT_FALSE(matches("int main() { int xx; auto f = [xx](){ return xx; }; }",
matcher));
}
TEST_P(ASTMatchersTest,
LambdaCaptureTest_DoesNotBindToCaptureWithInitializerAndDifferentName) {
if (!GetParam().isCXX14OrLater()) {
return;
}
EXPECT_FALSE(matches(
"int main() { auto lambda = [xx = 1] {return xx;}; }",
lambdaExpr(hasAnyCapture(lambdaCapture(capturesVar(varDecl(
hasName("cc"), hasInitializer(integerLiteral(equals(1))))))))));
}
TEST(ASTMatchersTestObjC, ObjCMessageExpr) {
// Don't find ObjCMessageExpr where none are present.
EXPECT_TRUE(notMatchesObjC("", objcMessageExpr(anything())));
StringRef Objc1String = "@interface Str "
" - (Str *)uppercaseString;"
"@end "
"@interface foo "
"- (void)contents;"
"- (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(hasAnySelector({"contents", "meth:"}))
));
EXPECT_TRUE(
matchesObjC(Objc1String, objcMessageExpr(hasSelector("contents"))));
EXPECT_TRUE(matchesObjC(
Objc1String, objcMessageExpr(hasAnySelector("contents", "contentsA"))));
EXPECT_FALSE(matchesObjC(
Objc1String, objcMessageExpr(hasAnySelector("contentsB", "contentsC"))));
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))));
}
TEST(ASTMatchersTestObjC, ObjCDecls) {
StringRef ObjCString = "@protocol Proto "
"- (void)protoDidThing; "
"@end "
"@interface Thing "
"@property int enabled; "
"@end "
"@interface Thing (ABC) "
"- (void)abc_doThing; "
"@end "
"@implementation Thing "
"{ id _ivar; } "
"- (void)anything {} "
"@end "
"@implementation Thing (ABC) "
"- (void)abc_doThing {} "
"@end ";
EXPECT_TRUE(matchesObjC(ObjCString, objcProtocolDecl(hasName("Proto"))));
EXPECT_TRUE(
matchesObjC(ObjCString, objcImplementationDecl(hasName("Thing"))));
EXPECT_TRUE(matchesObjC(ObjCString, objcCategoryDecl(hasName("ABC"))));
EXPECT_TRUE(matchesObjC(ObjCString, objcCategoryImplDecl(hasName("ABC"))));
EXPECT_TRUE(
matchesObjC(ObjCString, objcMethodDecl(hasName("protoDidThing"))));
EXPECT_TRUE(matchesObjC(ObjCString, objcMethodDecl(hasName("abc_doThing"))));
EXPECT_TRUE(matchesObjC(ObjCString, objcMethodDecl(hasName("anything"))));
EXPECT_TRUE(matchesObjC(ObjCString, objcIvarDecl(hasName("_ivar"))));
EXPECT_TRUE(matchesObjC(ObjCString, objcPropertyDecl(hasName("enabled"))));
}
TEST(ASTMatchersTestObjC, ObjCExceptionStmts) {
StringRef ObjCString = "void f(id obj) {"
" @try {"
" @throw obj;"
" } @catch (...) {"
" } @finally {}"
"}";
EXPECT_TRUE(matchesObjC(ObjCString, objcTryStmt()));
EXPECT_TRUE(matchesObjC(ObjCString, objcThrowStmt()));
EXPECT_TRUE(matchesObjC(ObjCString, objcCatchStmt()));
EXPECT_TRUE(matchesObjC(ObjCString, objcFinallyStmt()));
}
TEST(ASTMatchersTest, DecompositionDecl) {
StringRef Code = R"cpp(
void foo()
{
int arr[3];
auto &[f, s, t] = arr;
f = 42;
}
)cpp";
EXPECT_TRUE(matchesConditionally(
Code, decompositionDecl(hasBinding(0, bindingDecl(hasName("f")))), true,
{"-std=c++17"}));
EXPECT_FALSE(matchesConditionally(
Code, decompositionDecl(hasBinding(42, bindingDecl(hasName("f")))), true,
{"-std=c++17"}));
EXPECT_FALSE(matchesConditionally(
Code, decompositionDecl(hasBinding(0, bindingDecl(hasName("s")))), true,
{"-std=c++17"}));
EXPECT_TRUE(matchesConditionally(
Code, decompositionDecl(hasBinding(1, bindingDecl(hasName("s")))), true,
{"-std=c++17"}));
EXPECT_TRUE(matchesConditionally(
Code,
bindingDecl(decl().bind("self"), hasName("f"),
forDecomposition(decompositionDecl(
hasAnyBinding(bindingDecl(equalsBoundNode("self")))))),
true, {"-std=c++17"}));
}
TEST(ASTMatchersTestObjC, ObjCAutoreleasePoolStmt) {
StringRef ObjCString = "void f() {"
"@autoreleasepool {"
" int x = 1;"
"}"
"}";
EXPECT_TRUE(matchesObjC(ObjCString, autoreleasePoolStmt()));
StringRef ObjCStringNoPool = "void f() { int x = 1; }";
EXPECT_FALSE(matchesObjC(ObjCStringNoPool, autoreleasePoolStmt()));
}
TEST(ASTMatchersTestOpenMP, OMPExecutableDirective) {
auto Matcher = stmt(ompExecutableDirective());
StringRef Source0 = R"(
void x() {
#pragma omp parallel
;
})";
EXPECT_TRUE(matchesWithOpenMP(Source0, Matcher));
StringRef Source1 = R"(
void x() {
#pragma omp taskyield
;
})";
EXPECT_TRUE(matchesWithOpenMP(Source1, Matcher));
StringRef Source2 = R"(
void x() {
;
})";
EXPECT_TRUE(notMatchesWithOpenMP(Source2, Matcher));
}
TEST(ASTMatchersTestOpenMP, OMPDefaultClause) {
auto Matcher = ompExecutableDirective(hasAnyClause(ompDefaultClause()));
StringRef Source0 = R"(
void x() {
;
})";
EXPECT_TRUE(notMatchesWithOpenMP(Source0, Matcher));
StringRef Source1 = R"(
void x() {
#pragma omp parallel
;
})";
EXPECT_TRUE(notMatchesWithOpenMP(Source1, Matcher));
StringRef Source2 = R"(
void x() {
#pragma omp parallel default(none)
;
})";
EXPECT_TRUE(matchesWithOpenMP(Source2, Matcher));
StringRef Source3 = R"(
void x() {
#pragma omp parallel default(shared)
;
})";
EXPECT_TRUE(matchesWithOpenMP(Source3, Matcher));
StringRef Source4 = R"(
void x() {
#pragma omp parallel default(firstprivate)
;
})";
EXPECT_TRUE(matchesWithOpenMP51(Source4, Matcher));
StringRef Source5 = R"(
void x(int x) {
#pragma omp parallel num_threads(x)
;
})";
EXPECT_TRUE(notMatchesWithOpenMP(Source5, Matcher));
}
TEST(ASTMatchersTest, 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(isMain(), nullptr));
EXPECT_FALSE(Finder.addDynamicMatcher(hasName("x"), nullptr));
}
TEST(MatchFinderAPI, MatchesDynamic) {
StringRef SourceCode = "struct A { void f() {} };";
auto Matcher = functionDecl(isDefinition()).bind("method");
auto astUnit = tooling::buildASTFromCode(SourceCode);
auto GlobalBoundNodes = matchDynamic(Matcher, astUnit->getASTContext());
EXPECT_EQ(GlobalBoundNodes.size(), 1u);
EXPECT_EQ(GlobalBoundNodes[0].getMap().size(), 1u);
auto GlobalMethodNode = GlobalBoundNodes[0].getNodeAs<FunctionDecl>("method");
EXPECT_TRUE(GlobalMethodNode != nullptr);
auto MethodBoundNodes =
matchDynamic(Matcher, *GlobalMethodNode, astUnit->getASTContext());
EXPECT_EQ(MethodBoundNodes.size(), 1u);
EXPECT_EQ(MethodBoundNodes[0].getMap().size(), 1u);
auto MethodNode = MethodBoundNodes[0].getNodeAs<FunctionDecl>("method");
EXPECT_EQ(MethodNode, GlobalMethodNode);
}
static std::vector<TestClangConfig> allTestClangConfigs() {
std::vector<TestClangConfig> all_configs;
for (TestLanguage lang : {Lang_C89, Lang_C99, Lang_CXX03, Lang_CXX11,
Lang_CXX14, Lang_CXX17, Lang_CXX20}) {
TestClangConfig config;
config.Language = lang;
// Use an unknown-unknown triple so we don't instantiate the full system
// toolchain. On Linux, instantiating the toolchain involves stat'ing
// large portions of /usr/lib, and this slows down not only this test, but
// all other tests, via contention in the kernel.
//
// FIXME: This is a hack to work around the fact that there's no way to do
// the equivalent of runToolOnCodeWithArgs without instantiating a full
// Driver. We should consider having a function, at least for tests, that
// invokes cc1.
config.Target = "i386-unknown-unknown";
all_configs.push_back(config);
// Windows target is interesting to test because it enables
// `-fdelayed-template-parsing`.
config.Target = "x86_64-pc-win32-msvc";
all_configs.push_back(config);
}
return all_configs;
}
INSTANTIATE_TEST_SUITE_P(ASTMatchersTests, ASTMatchersTest,
testing::ValuesIn(allTestClangConfigs()));
} // namespace ast_matchers
} // namespace clang