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ASTMatchersTest.cpp
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ASTMatchersTest.cpp
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//===- unittest/Tooling/ASTMatchersTest.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 {
#if GTEST_HAS_DEATH_TEST
TEST(HasNameDeathTest, DiesOnEmptyName) {
ASSERT_DEBUG_DEATH({
DeclarationMatcher HasEmptyName = recordDecl(hasName(""));
EXPECT_TRUE(notMatches("class X {};", HasEmptyName));
}, "");
}
TEST(HasNameDeathTest, DiesOnEmptyPattern) {
ASSERT_DEBUG_DEATH({
DeclarationMatcher HasEmptyName = recordDecl(matchesName(""));
EXPECT_TRUE(notMatches("class X {};", HasEmptyName));
}, "");
}
TEST(IsDerivedFromDeathTest, DiesOnEmptyBaseName) {
ASSERT_DEBUG_DEATH({
DeclarationMatcher IsDerivedFromEmpty = cxxRecordDecl(isDerivedFrom(""));
EXPECT_TRUE(notMatches("class X {};", IsDerivedFromEmpty));
}, "");
}
#endif
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(hasSize(2), 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, ClassIsDerived) {
DeclarationMatcher IsDerivedFromX = cxxRecordDecl(isDerivedFrom("X"));
EXPECT_TRUE(matches("class X {}; class Y : public X {};", IsDerivedFromX));
EXPECT_TRUE(notMatches("class X {};", IsDerivedFromX));
EXPECT_TRUE(notMatches("class X;", IsDerivedFromX));
EXPECT_TRUE(notMatches("class Y;", IsDerivedFromX));
EXPECT_TRUE(notMatches("", IsDerivedFromX));
DeclarationMatcher IsAX = cxxRecordDecl(isSameOrDerivedFrom("X"));
EXPECT_TRUE(matches("class X {}; class Y : public X {};", IsAX));
EXPECT_TRUE(matches("class X {};", IsAX));
EXPECT_TRUE(matches("class X;", IsAX));
EXPECT_TRUE(notMatches("class Y;", IsAX));
EXPECT_TRUE(notMatches("", IsAX));
DeclarationMatcher ZIsDerivedFromX =
cxxRecordDecl(hasName("Z"), isDerivedFrom("X"));
EXPECT_TRUE(
matches("class X {}; class Y : public X {}; class Z : public Y {};",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("class X {};"
"template<class T> class Y : public X {};"
"class Z : public Y<int> {};", ZIsDerivedFromX));
EXPECT_TRUE(matches("class X {}; template<class T> class Z : public X {};",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class T> class X {}; "
"template<class T> class Z : public X<T> {};",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class T, class U=T> class X {}; "
"template<class T> class Z : public X<T> {};",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<class X> class A { class Z : public X {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class X> class A { public: class Z : public X {}; }; "
"class X{}; void y() { A<X>::Z z; }", ZIsDerivedFromX));
EXPECT_TRUE(
matches("template <class T> class X {}; "
"template<class Y> class A { class Z : public X<Y> {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<template<class T> class X> class A { "
" class Z : public X<int> {}; };", ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<template<class T> class X> class A { "
" public: class Z : public X<int> {}; }; "
"template<class T> class X {}; void y() { A<X>::Z z; }",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<class X> class A { class Z : public X::D {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class X> class A { public: "
" class Z : public X::D {}; }; "
"class Y { public: class X {}; typedef X D; }; "
"void y() { A<Y>::Z z; }", ZIsDerivedFromX));
EXPECT_TRUE(
matches("class X {}; typedef X Y; class Z : public Y {};",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class T> class Y { typedef typename T::U X; "
" class Z : public X {}; };", ZIsDerivedFromX));
EXPECT_TRUE(matches("class X {}; class Z : public ::X {};",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<class T> class X {}; "
"template<class T> class A { class Z : public X<T>::D {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class T> class X { public: typedef X<T> D; }; "
"template<class T> class A { public: "
" class Z : public X<T>::D {}; }; void y() { A<int>::Z z; }",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<class X> class A { class Z : public X::D::E {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("class X {}; typedef X V; typedef V W; class Z : public W {};",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("class X {}; class Y : public X {}; "
"typedef Y V; typedef V W; class Z : public W {};",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("template<class T, class U> class X {}; "
"template<class T> class A { class Z : public X<T, int> {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<class X> class D { typedef X A; typedef A B; "
" typedef B C; class Z : public C {}; };",
ZIsDerivedFromX));
EXPECT_TRUE(
matches("class X {}; typedef X A; typedef A B; "
"class Z : public B {};", ZIsDerivedFromX));
EXPECT_TRUE(
matches("class X {}; typedef X A; typedef A B; typedef B C; "
"class Z : public C {};", ZIsDerivedFromX));
EXPECT_TRUE(
matches("class U {}; typedef U X; typedef X V; "
"class Z : public V {};", ZIsDerivedFromX));
EXPECT_TRUE(
matches("class Base {}; typedef Base X; "
"class Z : public Base {};", ZIsDerivedFromX));
EXPECT_TRUE(
matches("class Base {}; typedef Base Base2; typedef Base2 X; "
"class Z : public Base {};", ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("class Base {}; class Base2 {}; typedef Base2 X; "
"class Z : public Base {};", ZIsDerivedFromX));
EXPECT_TRUE(
matches("class A {}; typedef A X; typedef A Y; "
"class Z : public Y {};", ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template <typename T> class Z;"
"template <> class Z<void> {};"
"template <typename T> class Z : public Z<void> {};",
IsDerivedFromX));
EXPECT_TRUE(
matches("template <typename T> class X;"
"template <> class X<void> {};"
"template <typename T> class X : public X<void> {};",
IsDerivedFromX));
EXPECT_TRUE(matches(
"class X {};"
"template <typename T> class Z;"
"template <> class Z<void> {};"
"template <typename T> class Z : public Z<void>, public X {};",
ZIsDerivedFromX));
EXPECT_TRUE(
notMatches("template<int> struct X;"
"template<int i> struct X : public X<i-1> {};",
cxxRecordDecl(isDerivedFrom(recordDecl(hasName("Some"))))));
EXPECT_TRUE(matches(
"struct A {};"
"template<int> struct X;"
"template<int i> struct X : public X<i-1> {};"
"template<> struct X<0> : public A {};"
"struct B : public X<42> {};",
cxxRecordDecl(hasName("B"), isDerivedFrom(recordDecl(hasName("A"))))));
// FIXME: Once we have better matchers for template type matching,
// get rid of the Variable(...) matching and match the right template
// declarations directly.
const char *RecursiveTemplateOneParameter =
"class Base1 {}; class Base2 {};"
"template <typename T> class Z;"
"template <> class Z<void> : public Base1 {};"
"template <> class Z<int> : public Base2 {};"
"template <> class Z<float> : public Z<void> {};"
"template <> class Z<double> : public Z<int> {};"
"template <typename T> class Z : public Z<float>, public Z<double> {};"
"void f() { Z<float> z_float; Z<double> z_double; Z<char> z_char; }";
EXPECT_TRUE(matches(
RecursiveTemplateOneParameter,
varDecl(hasName("z_float"),
hasInitializer(hasType(cxxRecordDecl(isDerivedFrom("Base1")))))));
EXPECT_TRUE(notMatches(
RecursiveTemplateOneParameter,
varDecl(hasName("z_float"),
hasInitializer(hasType(cxxRecordDecl(isDerivedFrom("Base2")))))));
EXPECT_TRUE(matches(
RecursiveTemplateOneParameter,
varDecl(hasName("z_char"),
hasInitializer(hasType(cxxRecordDecl(isDerivedFrom("Base1"),
isDerivedFrom("Base2")))))));
const char *RecursiveTemplateTwoParameters =
"class Base1 {}; class Base2 {};"
"template <typename T1, typename T2> class Z;"
"template <typename T> class Z<void, T> : public Base1 {};"
"template <typename T> class Z<int, T> : public Base2 {};"
"template <typename T> class Z<float, T> : public Z<void, T> {};"
"template <typename T> class Z<double, T> : public Z<int, T> {};"
"template <typename T1, typename T2> class Z : "
" public Z<float, T2>, public Z<double, T2> {};"
"void f() { Z<float, void> z_float; Z<double, void> z_double; "
" Z<char, void> z_char; }";
EXPECT_TRUE(matches(
RecursiveTemplateTwoParameters,
varDecl(hasName("z_float"),
hasInitializer(hasType(cxxRecordDecl(isDerivedFrom("Base1")))))));
EXPECT_TRUE(notMatches(
RecursiveTemplateTwoParameters,
varDecl(hasName("z_float"),
hasInitializer(hasType(cxxRecordDecl(isDerivedFrom("Base2")))))));
EXPECT_TRUE(matches(
RecursiveTemplateTwoParameters,
varDecl(hasName("z_char"),
hasInitializer(hasType(cxxRecordDecl(isDerivedFrom("Base1"),
isDerivedFrom("Base2")))))));
EXPECT_TRUE(matches(
"namespace ns { class X {}; class Y : public X {}; }",
cxxRecordDecl(isDerivedFrom("::ns::X"))));
EXPECT_TRUE(notMatches(
"class X {}; class Y : public X {};",
cxxRecordDecl(isDerivedFrom("::ns::X"))));
EXPECT_TRUE(matches(
"class X {}; class Y : public X {};",
cxxRecordDecl(isDerivedFrom(recordDecl(hasName("X")).bind("test")))));
EXPECT_TRUE(matches(
"template<typename T> class X {};"
"template<typename T> using Z = X<T>;"
"template <typename T> class Y : Z<T> {};",
cxxRecordDecl(isDerivedFrom(namedDecl(hasName("X"))))));
}
TEST(DeclarationMatcher, hasMethod) {
EXPECT_TRUE(matches("class A { void func(); };",
cxxRecordDecl(hasMethod(hasName("func")))));
EXPECT_TRUE(notMatches("class A { void func(); };",
cxxRecordDecl(hasMethod(isPublic()))));
}
TEST(DeclarationMatcher, ClassDerivedFromDependentTemplateSpecialization) {
EXPECT_TRUE(matches(
"template <typename T> struct A {"
" template <typename T2> struct F {};"
"};"
"template <typename T> struct B : A<T>::template F<T> {};"
"B<int> b;",
cxxRecordDecl(hasName("B"), isDerivedFrom(recordDecl()))));
}
TEST(DeclarationMatcher, hasDeclContext) {
EXPECT_TRUE(matches(
"namespace N {"
" namespace M {"
" class D {};"
" }"
"}",
recordDecl(hasDeclContext(namespaceDecl(hasName("M"))))));
EXPECT_TRUE(notMatches(
"namespace N {"
" namespace M {"
" class D {};"
" }"
"}",
recordDecl(hasDeclContext(namespaceDecl(hasName("N"))))));
EXPECT_TRUE(matches("namespace {"
" namespace M {"
" class D {};"
" }"
"}",
recordDecl(hasDeclContext(namespaceDecl(
hasName("M"), hasDeclContext(namespaceDecl()))))));
EXPECT_TRUE(matches("class D{};", decl(hasDeclContext(decl()))));
}
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(AllOf, AllOverloadsWork) {
const char Program[] =
"struct T { };"
"int f(int, T*, int, int);"
"void g(int x) { T t; f(x, &t, 3, 4); }";
EXPECT_TRUE(matches(Program,
callExpr(allOf(callee(functionDecl(hasName("f"))),
hasArgument(0, declRefExpr(to(varDecl())))))));
EXPECT_TRUE(matches(Program,
callExpr(allOf(callee(functionDecl(hasName("f"))),
hasArgument(0, declRefExpr(to(varDecl()))),
hasArgument(1, hasType(pointsTo(
recordDecl(hasName("T")))))))));
EXPECT_TRUE(matches(Program,
callExpr(allOf(callee(functionDecl(hasName("f"))),
hasArgument(0, declRefExpr(to(varDecl()))),
hasArgument(1, hasType(pointsTo(
recordDecl(hasName("T"))))),
hasArgument(2, integerLiteral(equals(3)))))));
EXPECT_TRUE(matches(Program,
callExpr(allOf(callee(functionDecl(hasName("f"))),
hasArgument(0, declRefExpr(to(varDecl()))),
hasArgument(1, hasType(pointsTo(
recordDecl(hasName("T"))))),
hasArgument(2, integerLiteral(equals(3))),
hasArgument(3, integerLiteral(equals(4)))))));
}
TEST(ConstructVariadic, MismatchedTypes_Regression) {
EXPECT_TRUE(
matches("const int a = 0;",
internal::DynTypedMatcher::constructVariadic(
internal::DynTypedMatcher::VO_AnyOf,
ast_type_traits::ASTNodeKind::getFromNodeKind<QualType>(),
{isConstQualified(), arrayType()})
.convertTo<QualType>()));
}
TEST(DeclarationMatcher, MatchAnyOf) {
DeclarationMatcher YOrZDerivedFromX = cxxRecordDecl(
anyOf(hasName("Y"), allOf(isDerivedFrom("X"), hasName("Z"))));
EXPECT_TRUE(matches("class X {}; class Z : public X {};", YOrZDerivedFromX));
EXPECT_TRUE(matches("class Y {};", YOrZDerivedFromX));
EXPECT_TRUE(
notMatches("class X {}; class W : public X {};", YOrZDerivedFromX));
EXPECT_TRUE(notMatches("class Z {};", YOrZDerivedFromX));
DeclarationMatcher XOrYOrZOrU =
recordDecl(anyOf(hasName("X"), hasName("Y"), hasName("Z"), hasName("U")));
EXPECT_TRUE(matches("class X {};", XOrYOrZOrU));
EXPECT_TRUE(notMatches("class V {};", XOrYOrZOrU));
DeclarationMatcher XOrYOrZOrUOrV =
recordDecl(anyOf(hasName("X"), hasName("Y"), hasName("Z"), hasName("U"),
hasName("V")));
EXPECT_TRUE(matches("class X {};", XOrYOrZOrUOrV));
EXPECT_TRUE(matches("class Y {};", XOrYOrZOrUOrV));
EXPECT_TRUE(matches("class Z {};", XOrYOrZOrUOrV));
EXPECT_TRUE(matches("class U {};", XOrYOrZOrUOrV));
EXPECT_TRUE(matches("class V {};", XOrYOrZOrUOrV));
EXPECT_TRUE(notMatches("class A {};", XOrYOrZOrUOrV));
StatementMatcher MixedTypes = stmt(anyOf(ifStmt(), binaryOperator()));
EXPECT_TRUE(matches("int F() { return 1 + 2; }", MixedTypes));
EXPECT_TRUE(matches("int F() { if (true) return 1; }", MixedTypes));
EXPECT_TRUE(notMatches("int F() { return 1; }", MixedTypes));
EXPECT_TRUE(
matches("void f() try { } catch (int) { } catch (...) { }",
cxxCatchStmt(anyOf(hasDescendant(varDecl()), isCatchAll()))));
}
TEST(DeclarationMatcher, MatchHas) {
DeclarationMatcher HasClassX = recordDecl(has(recordDecl(hasName("X"))));
EXPECT_TRUE(matches("class Y { class X {}; };", HasClassX));
EXPECT_TRUE(matches("class X {};", HasClassX));
DeclarationMatcher YHasClassX =
recordDecl(hasName("Y"), has(recordDecl(hasName("X"))));
EXPECT_TRUE(matches("class Y { class X {}; };", YHasClassX));
EXPECT_TRUE(notMatches("class X {};", YHasClassX));
EXPECT_TRUE(
notMatches("class Y { class Z { class X {}; }; };", YHasClassX));
}
TEST(DeclarationMatcher, MatchHasRecursiveAllOf) {
DeclarationMatcher Recursive =
recordDecl(
has(recordDecl(
has(recordDecl(hasName("X"))),
has(recordDecl(hasName("Y"))),
hasName("Z"))),
has(recordDecl(
has(recordDecl(hasName("A"))),
has(recordDecl(hasName("B"))),
hasName("C"))),
hasName("F"));
EXPECT_TRUE(matches(
"class F {"
" class Z {"
" class X {};"
" class Y {};"
" };"
" class C {"
" class A {};"
" class B {};"
" };"
"};", Recursive));
EXPECT_TRUE(matches(
"class F {"
" class Z {"
" class A {};"
" class X {};"
" class Y {};"
" };"
" class C {"
" class X {};"
" class A {};"
" class B {};"
" };"
"};", Recursive));
EXPECT_TRUE(matches(
"class O1 {"
" class O2 {"
" class F {"
" class Z {"
" class A {};"
" class X {};"
" class Y {};"
" };"
" class C {"
" class X {};"
" class A {};"
" class B {};"
" };"
" };"
" };"
"};", Recursive));
}
TEST(DeclarationMatcher, MatchHasRecursiveAnyOf) {
DeclarationMatcher Recursive =
recordDecl(
anyOf(
has(recordDecl(
anyOf(
has(recordDecl(
hasName("X"))),
has(recordDecl(
hasName("Y"))),
hasName("Z")))),
has(recordDecl(
anyOf(
hasName("C"),
has(recordDecl(
hasName("A"))),
has(recordDecl(
hasName("B")))))),
hasName("F")));
EXPECT_TRUE(matches("class F {};", Recursive));
EXPECT_TRUE(matches("class Z {};", Recursive));
EXPECT_TRUE(matches("class C {};", Recursive));
EXPECT_TRUE(matches("class M { class N { class X {}; }; };", Recursive));
EXPECT_TRUE(matches("class M { class N { class B {}; }; };", Recursive));
EXPECT_TRUE(
matches("class O1 { class O2 {"
" class M { class N { class B {}; }; }; "
"}; };", Recursive));
}
TEST(DeclarationMatcher, MatchNot) {
DeclarationMatcher NotClassX =
cxxRecordDecl(
isDerivedFrom("Y"),
unless(hasName("X")));
EXPECT_TRUE(notMatches("", NotClassX));
EXPECT_TRUE(notMatches("class Y {};", NotClassX));
EXPECT_TRUE(matches("class Y {}; class Z : public Y {};", NotClassX));
EXPECT_TRUE(notMatches("class Y {}; class X : public Y {};", NotClassX));
EXPECT_TRUE(
notMatches("class Y {}; class Z {}; class X : public Y {};",
NotClassX));
DeclarationMatcher ClassXHasNotClassY =
recordDecl(
hasName("X"),
has(recordDecl(hasName("Z"))),
unless(
has(recordDecl(hasName("Y")))));
EXPECT_TRUE(matches("class X { class Z {}; };", ClassXHasNotClassY));
EXPECT_TRUE(notMatches("class X { class Y {}; class Z {}; };",
ClassXHasNotClassY));
DeclarationMatcher NamedNotRecord =
namedDecl(hasName("Foo"), unless(recordDecl()));
EXPECT_TRUE(matches("void Foo(){}", NamedNotRecord));
EXPECT_TRUE(notMatches("struct Foo {};", NamedNotRecord));
}
TEST(DeclarationMatcher, HasDescendant) {
DeclarationMatcher ZDescendantClassX =
recordDecl(
hasDescendant(recordDecl(hasName("X"))),
hasName("Z"));
EXPECT_TRUE(matches("class Z { class X {}; };", ZDescendantClassX));
EXPECT_TRUE(
matches("class Z { class Y { class X {}; }; };", ZDescendantClassX));
EXPECT_TRUE(
matches("class Z { class A { class Y { class X {}; }; }; };",
ZDescendantClassX));
EXPECT_TRUE(
matches("class Z { class A { class B { class Y { class X {}; }; }; }; };",
ZDescendantClassX));
EXPECT_TRUE(notMatches("class Z {};", ZDescendantClassX));
DeclarationMatcher ZDescendantClassXHasClassY =
recordDecl(
hasDescendant(recordDecl(has(recordDecl(hasName("Y"))),
hasName("X"))),
hasName("Z"));
EXPECT_TRUE(matches("class Z { class X { class Y {}; }; };",
ZDescendantClassXHasClassY));
EXPECT_TRUE(
matches("class Z { class A { class B { class X { class Y {}; }; }; }; };",
ZDescendantClassXHasClassY));
EXPECT_TRUE(notMatches(
"class Z {"
" class A {"
" class B {"
" class X {"
" class C {"
" class Y {};"
" };"
" };"
" }; "
" };"
"};", ZDescendantClassXHasClassY));
DeclarationMatcher ZDescendantClassXDescendantClassY =
recordDecl(
hasDescendant(recordDecl(hasDescendant(recordDecl(hasName("Y"))),
hasName("X"))),
hasName("Z"));
EXPECT_TRUE(
matches("class Z { class A { class X { class B { class Y {}; }; }; }; };",
ZDescendantClassXDescendantClassY));
EXPECT_TRUE(matches(
"class Z {"
" class A {"
" class X {"
" class B {"
" class Y {};"
" };"
" class Y {};"
" };"
" };"
"};", ZDescendantClassXDescendantClassY));
}
TEST(DeclarationMatcher, HasDescendantMemoization) {
DeclarationMatcher CannotMemoize =
decl(hasDescendant(typeLoc().bind("x")), has(decl()));
EXPECT_TRUE(matches("void f() { int i; }", CannotMemoize));
}
TEST(DeclarationMatcher, HasDescendantMemoizationUsesRestrictKind) {
auto Name = hasName("i");
auto VD = internal::Matcher<VarDecl>(Name).dynCastTo<Decl>();
auto RD = internal::Matcher<RecordDecl>(Name).dynCastTo<Decl>();
// Matching VD first should not make a cache hit for RD.
EXPECT_TRUE(notMatches("void f() { int i; }",
decl(hasDescendant(VD), hasDescendant(RD))));
EXPECT_TRUE(notMatches("void f() { int i; }",
decl(hasDescendant(RD), hasDescendant(VD))));
// Not matching RD first should not make a cache hit for VD either.
EXPECT_TRUE(matches("void f() { int i; }",
decl(anyOf(hasDescendant(RD), hasDescendant(VD)))));
}
TEST(DeclarationMatcher, HasAttr) {
EXPECT_TRUE(matches("struct __attribute__((warn_unused)) X {};",
decl(hasAttr(clang::attr::WarnUnused))));
EXPECT_FALSE(matches("struct X {};",
decl(hasAttr(clang::attr::WarnUnused))));
}
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)));
}
// Implements a run method that returns whether BoundNodes contains a
// Decl bound to Id that can be dynamically cast to T.
// Optionally checks that the check succeeded a specific number of times.
template <typename T>
class VerifyIdIsBoundTo : public BoundNodesCallback {
public:
// Create an object that checks that a node of type \c T was bound to \c Id.
// Does not check for a certain number of matches.
explicit VerifyIdIsBoundTo(llvm::StringRef Id)
: Id(Id), ExpectedCount(-1), Count(0) {}
// Create an object that checks that a node of type \c T was bound to \c Id.
// Checks that there were exactly \c ExpectedCount matches.
VerifyIdIsBoundTo(llvm::StringRef Id, int ExpectedCount)
: Id(Id), ExpectedCount(ExpectedCount), Count(0) {}
// Create an object that checks that a node of type \c T was bound to \c Id.
// Checks that there was exactly one match with the name \c ExpectedName.
// Note that \c T must be a NamedDecl for this to work.
VerifyIdIsBoundTo(llvm::StringRef Id, llvm::StringRef ExpectedName,
int ExpectedCount = 1)
: Id(Id), ExpectedCount(ExpectedCount), Count(0),
ExpectedName(ExpectedName) {}
void onEndOfTranslationUnit() override {
if (ExpectedCount != -1)
EXPECT_EQ(ExpectedCount, Count);
if (!ExpectedName.empty())
EXPECT_EQ(ExpectedName, Name);
Count = 0;
Name.clear();
}
~VerifyIdIsBoundTo() override {
EXPECT_EQ(0, Count);
EXPECT_EQ("", Name);
}
bool run(const BoundNodes *Nodes) override {
const BoundNodes::IDToNodeMap &M = Nodes->getMap();
if (Nodes->getNodeAs<T>(Id)) {
++Count;
if (const NamedDecl *Named = Nodes->getNodeAs<NamedDecl>(Id)) {
Name = Named->getNameAsString();
} else if (const NestedNameSpecifier *NNS =
Nodes->getNodeAs<NestedNameSpecifier>(Id)) {
llvm::raw_string_ostream OS(Name);
NNS->print(OS, PrintingPolicy(LangOptions()));
}
BoundNodes::IDToNodeMap::const_iterator I = M.find(Id);
EXPECT_NE(M.end(), I);
if (I != M.end())
EXPECT_EQ(Nodes->getNodeAs<T>(Id), I->second.get<T>());
return true;
}
EXPECT_TRUE(M.count(Id) == 0 ||
M.find(Id)->second.template get<T>() == nullptr);
return false;
}
bool run(const BoundNodes *Nodes, ASTContext *Context) override {
return run(Nodes);
}
private:
const std::string Id;
const int ExpectedCount;
int Count;
const std::string ExpectedName;
std::string Name;
};
TEST(HasDescendant, MatchesDescendantTypes) {
EXPECT_TRUE(matches("void f() { int i = 3; }",
decl(hasDescendant(loc(builtinType())))));
EXPECT_TRUE(matches("void f() { int i = 3; }",
stmt(hasDescendant(builtinType()))));
EXPECT_TRUE(matches("void f() { int i = 3; }",
stmt(hasDescendant(loc(builtinType())))));
EXPECT_TRUE(matches("void f() { int i = 3; }",
stmt(hasDescendant(qualType(builtinType())))));
EXPECT_TRUE(notMatches("void f() { float f = 2.0f; }",
stmt(hasDescendant(isInteger()))));
EXPECT_TRUE(matchAndVerifyResultTrue(
"void f() { int a; float c; int d; int e; }",
functionDecl(forEachDescendant(
varDecl(hasDescendant(isInteger())).bind("x"))),
new VerifyIdIsBoundTo<Decl>("x", 3)));
}
TEST(HasDescendant, MatchesDescendantsOfTypes) {
EXPECT_TRUE(matches("void f() { int*** i; }",
qualType(hasDescendant(builtinType()))));
EXPECT_TRUE(matches("void f() { int*** i; }",
qualType(hasDescendant(
pointerType(pointee(builtinType()))))));
EXPECT_TRUE(matches("void f() { int*** i; }",
typeLoc(hasDescendant(loc(builtinType())))));
EXPECT_TRUE(matchAndVerifyResultTrue(
"void f() { int*** i; }",
qualType(asString("int ***"), forEachDescendant(pointerType().bind("x"))),
new VerifyIdIsBoundTo<Type>("x", 2)));
}
TEST(Has, MatchesChildrenOfTypes) {
EXPECT_TRUE(matches("int i;",
varDecl(hasName("i"), has(isInteger()))));
EXPECT_TRUE(notMatches("int** i;",
varDecl(hasName("i"), has(isInteger()))));
EXPECT_TRUE(matchAndVerifyResultTrue(
"int (*f)(float, int);",
qualType(functionType(), forEach(qualType(isInteger()).bind("x"))),
new VerifyIdIsBoundTo<QualType>("x", 2)));
}
TEST(Has, MatchesChildTypes) {
EXPECT_TRUE(matches(
"int* i;",
varDecl(hasName("i"), hasType(qualType(has(builtinType()))))));
EXPECT_TRUE(notMatches(
"int* i;",
varDecl(hasName("i"), hasType(qualType(has(pointerType()))))));
}
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(StatementMatcher, Has) {
StatementMatcher HasVariableI =
expr(hasType(pointsTo(recordDecl(hasName("X")))),
has(declRefExpr(to(varDecl(hasName("i"))))));
EXPECT_TRUE(matches(
"class X; X *x(int); void c() { int i; x(i); }", HasVariableI));
EXPECT_TRUE(notMatches(
"class X; X *x(int); void c() { int i; x(42); }", HasVariableI));
}
TEST(StatementMatcher, HasDescendant) {
StatementMatcher HasDescendantVariableI =
expr(hasType(pointsTo(recordDecl(hasName("X")))),
hasDescendant(declRefExpr(to(varDecl(hasName("i"))))));
EXPECT_TRUE(matches(
"class X; X *x(bool); bool b(int); void c() { int i; x(b(i)); }",
HasDescendantVariableI));
EXPECT_TRUE(notMatches(
"class X; X *x(bool); bool b(int); void c() { int i; x(b(42)); }",
HasDescendantVariableI));
}
TEST(TypeMatcher, MatchesClassType) {
TypeMatcher TypeA = hasDeclaration(recordDecl(hasName("A")));
EXPECT_TRUE(matches("class A { public: A *a; };", TypeA));
EXPECT_TRUE(notMatches("class A {};", TypeA));
TypeMatcher TypeDerivedFromA =
hasDeclaration(cxxRecordDecl(isDerivedFrom("A")));
EXPECT_TRUE(matches("class A {}; class B : public A { public: B *b; };",
TypeDerivedFromA));
EXPECT_TRUE(notMatches("class A {};", TypeA));
TypeMatcher TypeAHasClassB = hasDeclaration(
recordDecl(hasName("A"), has(recordDecl(hasName("B")))));
EXPECT_TRUE(
matches("class A { public: A *a; class B {}; };", TypeAHasClassB));
EXPECT_TRUE(matchesC("struct S {}; void f(void) { struct S s; }",
varDecl(hasType(namedDecl(hasName("S"))))));
}
TEST(TypeMatcher, MatchesDeclTypes) {
// TypedefType -> TypedefNameDecl
EXPECT_TRUE(matches("typedef int I; void f(I i);",
parmVarDecl(hasType(namedDecl(hasName("I"))))));
// ObjCObjectPointerType
EXPECT_TRUE(matchesObjC("@interface Foo @end void f(Foo *f);",
parmVarDecl(hasType(objcObjectPointerType()))));
// ObjCObjectPointerType -> ObjCInterfaceType -> ObjCInterfaceDecl
EXPECT_TRUE(matchesObjC(
"@interface Foo @end void f(Foo *f);",
parmVarDecl(hasType(pointsTo(objcInterfaceDecl(hasName("Foo")))))));
// TemplateTypeParmType
EXPECT_TRUE(matches("template <typename T> void f(T t);",
parmVarDecl(hasType(templateTypeParmType()))));
// TemplateTypeParmType -> TemplateTypeParmDecl
EXPECT_TRUE(matches("template <typename T> void f(T t);",
parmVarDecl(hasType(namedDecl(hasName("T"))))));
// InjectedClassNameType
EXPECT_TRUE(matches("template <typename T> struct S {"
" void f(S s);"
"};",
parmVarDecl(hasType(injectedClassNameType()))));
EXPECT_TRUE(notMatches("template <typename T> struct S {"
" void g(S<T> s);"
"};",
parmVarDecl(hasType(injectedClassNameType()))));
// InjectedClassNameType -> CXXRecordDecl
EXPECT_TRUE(matches("template <typename T> struct S {"
" void f(S s);"
"};",
parmVarDecl(hasType(namedDecl(hasName("S"))))));
static const char Using[] = "template <typename T>"
"struct Base {"
" typedef T Foo;"
"};"
""
"template <typename T>"
"struct S : private Base<T> {"
" using typename Base<T>::Foo;"
" void f(Foo);"
"};";
// UnresolvedUsingTypenameDecl
EXPECT_TRUE(matches(Using, unresolvedUsingTypenameDecl(hasName("Foo"))));
// UnresolvedUsingTypenameType -> UnresolvedUsingTypenameDecl
EXPECT_TRUE(matches(Using, parmVarDecl(hasType(namedDecl(hasName("Foo"))))));
}
TEST(Matcher, BindMatchedNodes) {
DeclarationMatcher ClassX = has(recordDecl(hasName("::X")).bind("x"));
EXPECT_TRUE(matchAndVerifyResultTrue("class X {};",
ClassX, new VerifyIdIsBoundTo<CXXRecordDecl>("x")));
EXPECT_TRUE(matchAndVerifyResultFalse("class X {};",
ClassX, new VerifyIdIsBoundTo<CXXRecordDecl>("other-id")));
TypeMatcher TypeAHasClassB = hasDeclaration(
recordDecl(hasName("A"), has(recordDecl(hasName("B")).bind("b"))));
EXPECT_TRUE(matchAndVerifyResultTrue("class A { public: A *a; class B {}; };",
TypeAHasClassB,
new VerifyIdIsBoundTo<Decl>("b")));
StatementMatcher MethodX =
callExpr(callee(cxxMethodDecl(hasName("x")))).bind("x");
EXPECT_TRUE(matchAndVerifyResultTrue("class A { void x() { x(); } };",
MethodX,
new VerifyIdIsBoundTo<CXXMemberCallExpr>("x")));
}
TEST(Matcher, BindTheSameNameInAlternatives) {
StatementMatcher matcher = anyOf(