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llvm-project/clang/unittests/ASTMatchers/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/ASTMatchers/ASTMatchers.h"
#include "clang/ASTMatchers/ASTMatchFinder.h"
#include "clang/Tooling/Tooling.h"
#include "gtest/gtest.h"
namespace clang {
namespace ast_matchers {
#if GTEST_HAS_DEATH_TEST
TEST(HasNameDeathTest, DiesOnEmptyName) {
ASSERT_DEBUG_DEATH({
DeclarationMatcher HasEmptyName = record(hasName(""));
EXPECT_TRUE(notMatches("class X {};", HasEmptyName));
}, "");
}
TEST(HasNameDeathTest, DiesOnEmptyPattern) {
ASSERT_DEBUG_DEATH({
DeclarationMatcher HasEmptyName = record(matchesName(""));
EXPECT_TRUE(notMatches("class X {};", HasEmptyName));
}, "");
}
TEST(IsDerivedFromDeathTest, DiesOnEmptyBaseName) {
ASSERT_DEBUG_DEATH({
DeclarationMatcher IsDerivedFromEmpty = record(isDerivedFrom(""));
EXPECT_TRUE(notMatches("class X {};", IsDerivedFromEmpty));
}, "");
}
#endif
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 = nameableDeclaration(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 = nameableDeclaration(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 = nameableDeclaration(matchesName("::no"));
EXPECT_TRUE(matches("int no_foo;", StartsWithNo));
EXPECT_TRUE(matches("class foo { virtual void nobody(); };", StartsWithNo));
DeclarationMatcher Abc = nameableDeclaration(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));
}
TEST(DeclarationMatcher, MatchClass) {
DeclarationMatcher ClassMatcher(record());
#if !defined(_MSC_VER)
EXPECT_FALSE(matches("", ClassMatcher));
#else
// Matches class type_info.
EXPECT_TRUE(matches("", ClassMatcher));
#endif
DeclarationMatcher ClassX = record(record(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 = record(isDerivedFrom("X"));
EXPECT_TRUE(matches("class X {}; class Y : public X {};", IsDerivedFromX));
EXPECT_TRUE(matches("class X {}; class Y : public X {};", IsDerivedFromX));
EXPECT_TRUE(matches("class X {};", IsDerivedFromX));
EXPECT_TRUE(matches("class X;", IsDerivedFromX));
EXPECT_TRUE(notMatches("class Y;", IsDerivedFromX));
EXPECT_TRUE(notMatches("", IsDerivedFromX));
DeclarationMatcher ZIsDerivedFromX =
record(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));
// 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,
variable(hasName("z_float"),
hasInitializer(hasType(record(isDerivedFrom("Base1")))))));
EXPECT_TRUE(notMatches(
RecursiveTemplateOneParameter,
variable(
hasName("z_float"),
hasInitializer(hasType(record(isDerivedFrom("Base2")))))));
EXPECT_TRUE(matches(
RecursiveTemplateOneParameter,
variable(
hasName("z_char"),
hasInitializer(hasType(record(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,
variable(
hasName("z_float"),
hasInitializer(hasType(record(isDerivedFrom("Base1")))))));
EXPECT_TRUE(notMatches(
RecursiveTemplateTwoParameters,
variable(
hasName("z_float"),
hasInitializer(hasType(record(isDerivedFrom("Base2")))))));
EXPECT_TRUE(matches(
RecursiveTemplateTwoParameters,
variable(
hasName("z_char"),
hasInitializer(hasType(record(isDerivedFrom("Base1"),
isDerivedFrom("Base2")))))));
EXPECT_TRUE(matches(
"namespace ns { class X {}; class Y : public X {}; }",
record(isDerivedFrom("::ns::X"))));
EXPECT_TRUE(notMatches(
"class X {}; class Y : public X {};",
record(isDerivedFrom("::ns::X"))));
EXPECT_TRUE(matches(
"class X {}; class Y : public X {};",
record(isDerivedFrom(record(hasName("X")).bind("test")))));
}
TEST(AllOf, AllOverloadsWork) {
const char Program[] =
"struct T { }; int f(int, T*); void g(int x) { T t; f(x, &t); }";
EXPECT_TRUE(matches(Program,
call(allOf(callee(function(hasName("f"))),
hasArgument(0, declarationReference(to(variable())))))));
EXPECT_TRUE(matches(Program,
call(allOf(callee(function(hasName("f"))),
hasArgument(0, declarationReference(to(variable()))),
hasArgument(1, hasType(pointsTo(record(hasName("T")))))))));
}
TEST(DeclarationMatcher, MatchAnyOf) {
DeclarationMatcher YOrZDerivedFromX =
record(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 =
record(anyOf(hasName("X"), hasName("Y"), hasName("Z"), hasName("U")));
EXPECT_TRUE(matches("class X {};", XOrYOrZOrU));
EXPECT_TRUE(notMatches("class V {};", XOrYOrZOrU));
DeclarationMatcher XOrYOrZOrUOrV =
record(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));
}
TEST(DeclarationMatcher, MatchHas) {
DeclarationMatcher HasClassX = record(has(record(hasName("X"))));
EXPECT_TRUE(matches("class Y { class X {}; };", HasClassX));
EXPECT_TRUE(matches("class X {};", HasClassX));
DeclarationMatcher YHasClassX =
record(hasName("Y"), has(record(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 =
record(
has(record(
has(record(hasName("X"))),
has(record(hasName("Y"))),
hasName("Z"))),
has(record(
has(record(hasName("A"))),
has(record(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 =
record(
anyOf(
has(record(
anyOf(
has(record(
hasName("X"))),
has(record(
hasName("Y"))),
hasName("Z")))),
has(record(
anyOf(
hasName("C"),
has(record(
hasName("A"))),
has(record(
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 =
record(
isDerivedFrom("Y"),
unless(hasName("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 =
record(
hasName("X"),
has(record(hasName("Z"))),
unless(
has(record(hasName("Y")))));
EXPECT_TRUE(matches("class X { class Z {}; };", ClassXHasNotClassY));
EXPECT_TRUE(notMatches("class X { class Y {}; class Z {}; };",
ClassXHasNotClassY));
}
TEST(DeclarationMatcher, HasDescendant) {
DeclarationMatcher ZDescendantClassX =
record(
hasDescendant(record(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 =
record(
hasDescendant(record(has(record(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 =
record(
hasDescendant(record(hasDescendant(record(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(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 = enumConstant(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 =
expression(
hasType(pointsTo(record(hasName("X")))),
has(declarationReference(to(variable(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 =
expression(
hasType(pointsTo(record(hasName("X")))),
hasDescendant(declarationReference(to(variable(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(record(hasName("A")));
EXPECT_TRUE(matches("class A { public: A *a; };", TypeA));
EXPECT_TRUE(notMatches("class A {};", TypeA));
TypeMatcher TypeDerivedFromA = hasDeclaration(record(isDerivedFrom("A")));
EXPECT_TRUE(matches("class A {}; class B : public A { public: B *b; };",
TypeDerivedFromA));
EXPECT_TRUE(notMatches("class A {};", TypeA));
TypeMatcher TypeAHasClassB = hasDeclaration(
record(hasName("A"), has(record(hasName("B")))));
EXPECT_TRUE(
matches("class A { public: A *a; class B {}; };", TypeAHasClassB));
}
// Returns from Run whether 'bound_nodes' contain a Decl bound to 'Id', which
// can be dynamically casted to T.
// Optionally checks that the check succeeded a specific number of times.
template <typename T>
class VerifyIdIsBoundToDecl : public BoundNodesCallback {
public:
// Create an object that checks that a node of type 'T' was bound to 'Id'.
// Does not check for a certain number of matches.
explicit VerifyIdIsBoundToDecl(const std::string& Id)
: Id(Id), ExpectedCount(-1), Count(0) {}
// Create an object that checks that a node of type 'T' was bound to 'Id'.
// Checks that there were exactly 'ExpectedCount' matches.
explicit VerifyIdIsBoundToDecl(const std::string& Id, int ExpectedCount)
: Id(Id), ExpectedCount(ExpectedCount), Count(0) {}
~VerifyIdIsBoundToDecl() {
if (ExpectedCount != -1) {
EXPECT_EQ(ExpectedCount, Count);
}
}
virtual bool run(const BoundNodes *Nodes) {
if (Nodes->getDeclAs<T>(Id) != NULL) {
++Count;
return true;
}
return false;
}
private:
const std::string Id;
const int ExpectedCount;
int Count;
};
template <typename T>
class VerifyIdIsBoundToStmt : public BoundNodesCallback {
public:
explicit VerifyIdIsBoundToStmt(const std::string &Id) : Id(Id) {}
virtual bool run(const BoundNodes *Nodes) {
const T *Node = Nodes->getStmtAs<T>(Id);
return Node != NULL;
}
private:
const std::string Id;
};
TEST(Matcher, BindMatchedNodes) {
DeclarationMatcher ClassX = has(record(hasName("::X")).bind("x"));
EXPECT_TRUE(matchAndVerifyResultTrue("class X {};",
ClassX, new VerifyIdIsBoundToDecl<CXXRecordDecl>("x")));
EXPECT_TRUE(matchAndVerifyResultFalse("class X {};",
ClassX, new VerifyIdIsBoundToDecl<CXXRecordDecl>("other-id")));
TypeMatcher TypeAHasClassB = hasDeclaration(
record(hasName("A"), has(record(hasName("B")).bind("b"))));
EXPECT_TRUE(matchAndVerifyResultTrue("class A { public: A *a; class B {}; };",
TypeAHasClassB,
new VerifyIdIsBoundToDecl<Decl>("b")));
StatementMatcher MethodX = call(callee(method(hasName("x")))).bind("x");
EXPECT_TRUE(matchAndVerifyResultTrue("class A { void x() { x(); } };",
MethodX,
new VerifyIdIsBoundToStmt<CXXMemberCallExpr>("x")));
}
TEST(Matcher, BindTheSameNameInAlternatives) {
StatementMatcher matcher = anyOf(
binaryOperator(hasOperatorName("+"),
hasLHS(expression().bind("x")),
hasRHS(integerLiteral(equals(0)))),
binaryOperator(hasOperatorName("+"),
hasLHS(integerLiteral(equals(0))),
hasRHS(expression().bind("x"))));
EXPECT_TRUE(matchAndVerifyResultTrue(
// The first branch of the matcher binds x to 0 but then fails.
// The second branch binds x to f() and succeeds.
"int f() { return 0 + f(); }",
matcher,
new VerifyIdIsBoundToStmt<CallExpr>("x")));
}
TEST(HasType, TakesQualTypeMatcherAndMatchesExpr) {
TypeMatcher ClassX = hasDeclaration(record(hasName("X")));
EXPECT_TRUE(
matches("class X {}; void y(X &x) { x; }", expression(hasType(ClassX))));
EXPECT_TRUE(
notMatches("class X {}; void y(X *x) { x; }",
expression(hasType(ClassX))));
EXPECT_TRUE(
matches("class X {}; void y(X *x) { x; }",
expression(hasType(pointsTo(ClassX)))));
}
TEST(HasType, TakesQualTypeMatcherAndMatchesValueDecl) {
TypeMatcher ClassX = hasDeclaration(record(hasName("X")));
EXPECT_TRUE(
matches("class X {}; void y() { X x; }", variable(hasType(ClassX))));
EXPECT_TRUE(
notMatches("class X {}; void y() { X *x; }", variable(hasType(ClassX))));
EXPECT_TRUE(
matches("class X {}; void y() { X *x; }",
variable(hasType(pointsTo(ClassX)))));
}
TEST(HasType, TakesDeclMatcherAndMatchesExpr) {
DeclarationMatcher ClassX = record(hasName("X"));
EXPECT_TRUE(
matches("class X {}; void y(X &x) { x; }", expression(hasType(ClassX))));
EXPECT_TRUE(
notMatches("class X {}; void y(X *x) { x; }",
expression(hasType(ClassX))));
}
TEST(HasType, TakesDeclMatcherAndMatchesValueDecl) {
DeclarationMatcher ClassX = record(hasName("X"));
EXPECT_TRUE(
matches("class X {}; void y() { X x; }", variable(hasType(ClassX))));
EXPECT_TRUE(
notMatches("class X {}; void y() { X *x; }", variable(hasType(ClassX))));
}
TEST(Matcher, Call) {
// FIXME: Do we want to overload Call() to directly take
// Matcher<Decl>, too?
StatementMatcher MethodX = call(hasDeclaration(method(hasName("x"))));
EXPECT_TRUE(matches("class Y { void x() { x(); } };", MethodX));
EXPECT_TRUE(notMatches("class Y { void x() {} };", MethodX));
StatementMatcher MethodOnY = memberCall(on(hasType(record(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 =
memberCall(on(hasType(pointsTo(record(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(HasType, MatchesAsString) {
EXPECT_TRUE(
matches("class Y { public: void x(); }; void z() {Y* y; y->x(); }",
memberCall(on(hasType(asString("class Y *"))))));
EXPECT_TRUE(matches("class X { void x(int x) {} };",
method(hasParameter(0, hasType(asString("int"))))));
EXPECT_TRUE(matches("namespace ns { struct A {}; } struct B { ns::A a; };",
field(hasType(asString("ns::A")))));
EXPECT_TRUE(matches("namespace { struct A {}; } struct B { A a; };",
field(hasType(asString("struct <anonymous>::A")))));
}
TEST(Matcher, OverloadedOperatorCall) {
StatementMatcher OpCall = overloadedOperatorCall();
// Unary operator
EXPECT_TRUE(matches("class Y { }; "
"bool operator!(Y x) { return false; }; "
"Y y; bool c = !y;", OpCall));
// No match -- special operators like "new", "delete"
// FIXME: operator new takes size_t, for which we need stddef.h, for which
// we need to figure out include paths in the test.
// EXPECT_TRUE(NotMatches("#include <stddef.h>\n"
// "class Y { }; "
// "void *operator new(size_t size) { return 0; } "
// "Y *y = new Y;", OpCall));
EXPECT_TRUE(notMatches("class Y { }; "
"void operator delete(void *p) { } "
"void a() {Y *y = new Y; delete y;}", OpCall));
// Binary operator
EXPECT_TRUE(matches("class Y { }; "
"bool operator&&(Y x, Y y) { return true; }; "
"Y a; Y b; bool c = a && b;",
OpCall));
// No match -- normal operator, not an overloaded one.
EXPECT_TRUE(notMatches("bool x = true, y = true; bool t = x && y;", OpCall));
EXPECT_TRUE(notMatches("int t = 5 << 2;", OpCall));
}
TEST(Matcher, HasOperatorNameForOverloadedOperatorCall) {
StatementMatcher OpCallAndAnd =
overloadedOperatorCall(hasOverloadedOperatorName("&&"));
EXPECT_TRUE(matches("class Y { }; "
"bool operator&&(Y x, Y y) { return true; }; "
"Y a; Y b; bool c = a && b;", OpCallAndAnd));
StatementMatcher OpCallLessLess =
overloadedOperatorCall(hasOverloadedOperatorName("<<"));
EXPECT_TRUE(notMatches("class Y { }; "
"bool operator&&(Y x, Y y) { return true; }; "
"Y a; Y b; bool c = a && b;",
OpCallLessLess));
}
TEST(Matcher, ThisPointerType) {
StatementMatcher MethodOnY =
memberCall(thisPointerType(record(hasName("Y"))));
EXPECT_TRUE(
matches("class Y { public: void x(); }; void z() { Y y; y.x(); }",
MethodOnY));
EXPECT_TRUE(
matches("class Y { public: void x(); }; void z(Y &y) { y.x(); }",
MethodOnY));
EXPECT_TRUE(
matches("class Y { public: void x(); }; void z(Y *&y) { y->x(); }",
MethodOnY));
EXPECT_TRUE(
matches("class Y { public: void x(); }; void z(Y y[]) { y->x(); }",
MethodOnY));
EXPECT_TRUE(
matches("class Y { public: void x(); }; void z() { Y *y; y->x(); }",
MethodOnY));
EXPECT_TRUE(matches(
"class Y {"
" public: virtual void x();"
"};"
"class X : public Y {"
" public: virtual void x();"
"};"
"void z() { X *x; x->Y::x(); }", MethodOnY));
}
TEST(Matcher, VariableUsage) {
StatementMatcher Reference =
declarationReference(to(
variable(hasInitializer(
memberCall(thisPointerType(record(hasName("Y"))))))));
EXPECT_TRUE(matches(
"class Y {"
" public:"
" bool x() const;"
"};"
"void z(const Y &y) {"
" bool b = y.x();"
" if (b) {}"
"}", Reference));
EXPECT_TRUE(notMatches(
"class Y {"
" public:"
" bool x() const;"
"};"
"void z(const Y &y) {"
" bool b = y.x();"
"}", Reference));
}
TEST(Matcher, FindsVarDeclInFuncitonParameter) {
EXPECT_TRUE(matches(
"void f(int i) {}",
variable(hasName("i"))));
}
TEST(Matcher, CalledVariable) {
StatementMatcher CallOnVariableY = expression(
memberCall(on(declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(matches(
"class Y { public: void x() { Y y; y.x(); } };", CallOnVariableY));
EXPECT_TRUE(matches(
"class Y { public: void x() const { Y y; y.x(); } };", CallOnVariableY));
EXPECT_TRUE(matches(
"class Y { public: void x(); };"
"class X : public Y { void z() { X y; y.x(); } };", CallOnVariableY));
EXPECT_TRUE(matches(
"class Y { public: void x(); };"
"class X : public Y { void z() { X *y; y->x(); } };", CallOnVariableY));
EXPECT_TRUE(notMatches(
"class Y { public: void x(); };"
"class X : public Y { void z() { unsigned long y; ((X*)y)->x(); } };",
CallOnVariableY));
}
TEST(UnaryExprOrTypeTraitExpr, MatchesSizeOfAndAlignOf) {
EXPECT_TRUE(matches("void x() { int a = sizeof(a); }",
unaryExprOrTypeTraitExpr()));
EXPECT_TRUE(notMatches("void x() { int a = sizeof(a); }",
alignOfExpr(anything())));
// FIXME: Uncomment once alignof is enabled.
// EXPECT_TRUE(matches("void x() { int a = alignof(a); }",
// unaryExprOrTypeTraitExpr()));
// EXPECT_TRUE(notMatches("void x() { int a = alignof(a); }",
// sizeOfExpr()));
}
TEST(UnaryExpressionOrTypeTraitExpression, MatchesCorrectType) {
EXPECT_TRUE(matches("void x() { int a = sizeof(a); }", sizeOfExpr(
hasArgumentOfType(asString("int")))));
EXPECT_TRUE(notMatches("void x() { int a = sizeof(a); }", sizeOfExpr(
hasArgumentOfType(asString("float")))));
EXPECT_TRUE(matches(
"struct A {}; void x() { A a; int b = sizeof(a); }",
sizeOfExpr(hasArgumentOfType(hasDeclaration(record(hasName("A")))))));
EXPECT_TRUE(notMatches("void x() { int a = sizeof(a); }", sizeOfExpr(
hasArgumentOfType(hasDeclaration(record(hasName("string")))))));
}
TEST(MemberExpression, DoesNotMatchClasses) {
EXPECT_TRUE(notMatches("class Y { void x() {} };", memberExpression()));
}
TEST(MemberExpression, MatchesMemberFunctionCall) {
EXPECT_TRUE(matches("class Y { void x() { x(); } };", memberExpression()));
}
TEST(MemberExpression, MatchesVariable) {
EXPECT_TRUE(
matches("class Y { void x() { this->y; } int y; };", memberExpression()));
EXPECT_TRUE(
matches("class Y { void x() { y; } int y; };", memberExpression()));
EXPECT_TRUE(
matches("class Y { void x() { Y y; y.y; } int y; };",
memberExpression()));
}
TEST(MemberExpression, MatchesStaticVariable) {
EXPECT_TRUE(matches("class Y { void x() { this->y; } static int y; };",
memberExpression()));
EXPECT_TRUE(notMatches("class Y { void x() { y; } static int y; };",
memberExpression()));
EXPECT_TRUE(notMatches("class Y { void x() { Y::y; } static int y; };",
memberExpression()));
}
TEST(IsInteger, MatchesIntegers) {
EXPECT_TRUE(matches("int i = 0;", variable(hasType(isInteger()))));
EXPECT_TRUE(matches("long long i = 0; void f(long long) { }; void g() {f(i);}",
call(hasArgument(0, declarationReference(
to(variable(hasType(isInteger()))))))));
}
TEST(IsInteger, ReportsNoFalsePositives) {
EXPECT_TRUE(notMatches("int *i;", variable(hasType(isInteger()))));
EXPECT_TRUE(notMatches("struct T {}; T t; void f(T *) { }; void g() {f(&t);}",
call(hasArgument(0, declarationReference(
to(variable(hasType(isInteger()))))))));
}
TEST(IsArrow, MatchesMemberVariablesViaArrow) {
EXPECT_TRUE(matches("class Y { void x() { this->y; } int y; };",
memberExpression(isArrow())));
EXPECT_TRUE(matches("class Y { void x() { y; } int y; };",
memberExpression(isArrow())));
EXPECT_TRUE(notMatches("class Y { void x() { (*this).y; } int y; };",
memberExpression(isArrow())));
}
TEST(IsArrow, MatchesStaticMemberVariablesViaArrow) {
EXPECT_TRUE(matches("class Y { void x() { this->y; } static int y; };",
memberExpression(isArrow())));
EXPECT_TRUE(notMatches("class Y { void x() { y; } static int y; };",
memberExpression(isArrow())));
EXPECT_TRUE(notMatches("class Y { void x() { (*this).y; } static int y; };",
memberExpression(isArrow())));
}
TEST(IsArrow, MatchesMemberCallsViaArrow) {
EXPECT_TRUE(matches("class Y { void x() { this->x(); } };",
memberExpression(isArrow())));
EXPECT_TRUE(matches("class Y { void x() { x(); } };",
memberExpression(isArrow())));
EXPECT_TRUE(notMatches("class Y { void x() { Y y; y.x(); } };",
memberExpression(isArrow())));
}
TEST(Callee, MatchesDeclarations) {
StatementMatcher CallMethodX = call(callee(method(hasName("x"))));
EXPECT_TRUE(matches("class Y { void x() { x(); } };", CallMethodX));
EXPECT_TRUE(notMatches("class Y { void x() {} };", CallMethodX));
}
TEST(Callee, MatchesMemberExpressions) {
EXPECT_TRUE(matches("class Y { void x() { this->x(); } };",
call(callee(memberExpression()))));
EXPECT_TRUE(
notMatches("class Y { void x() { this->x(); } };", call(callee(call()))));
}
TEST(Function, MatchesFunctionDeclarations) {
StatementMatcher CallFunctionF = call(callee(function(hasName("f"))));
EXPECT_TRUE(matches("void f() { f(); }", CallFunctionF));
EXPECT_TRUE(notMatches("void f() { }", CallFunctionF));
#if !defined(_MSC_VER)
// FIXME: Make this work for MSVC.
// Dependent contexts, but a non-dependent call.
EXPECT_TRUE(matches("void f(); template <int N> void g() { f(); }",
CallFunctionF));
EXPECT_TRUE(
matches("void f(); template <int N> struct S { void g() { f(); } };",
CallFunctionF));
#endif
// 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));
}
TEST(Matcher, Argument) {
StatementMatcher CallArgumentY = expression(call(
hasArgument(0, declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(matches("void x(int) { int y; x(y); }", CallArgumentY));
EXPECT_TRUE(
matches("class X { void x(int) { int y; x(y); } };", CallArgumentY));
EXPECT_TRUE(notMatches("void x(int) { int z; x(z); }", CallArgumentY));
StatementMatcher WrongIndex = expression(call(
hasArgument(42, declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(notMatches("void x(int) { int y; x(y); }", WrongIndex));
}
TEST(Matcher, AnyArgument) {
StatementMatcher CallArgumentY = expression(call(
hasAnyArgument(declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(matches("void x(int, int) { int y; x(1, y); }", CallArgumentY));
EXPECT_TRUE(matches("void x(int, int) { int y; x(y, 42); }", CallArgumentY));
EXPECT_TRUE(notMatches("void x(int, int) { x(1, 2); }", CallArgumentY));
}
TEST(Matcher, ArgumentCount) {
StatementMatcher Call1Arg = expression(call(argumentCountIs(1)));
EXPECT_TRUE(matches("void x(int) { x(0); }", Call1Arg));
EXPECT_TRUE(matches("class X { void x(int) { x(0); } };", Call1Arg));
EXPECT_TRUE(notMatches("void x(int, int) { x(0, 0); }", Call1Arg));
}
TEST(Matcher, References) {
DeclarationMatcher ReferenceClassX = variable(
hasType(references(record(hasName("X")))));
EXPECT_TRUE(matches("class X {}; void y(X y) { X &x = y; }",
ReferenceClassX));
EXPECT_TRUE(
matches("class X {}; void y(X y) { const X &x = y; }", ReferenceClassX));
EXPECT_TRUE(
notMatches("class X {}; void y(X y) { X x = y; }", ReferenceClassX));
EXPECT_TRUE(
notMatches("class X {}; void y(X *y) { X *&x = y; }", ReferenceClassX));
}
TEST(HasParameter, CallsInnerMatcher) {
EXPECT_TRUE(matches("class X { void x(int) {} };",
method(hasParameter(0, variable()))));
EXPECT_TRUE(notMatches("class X { void x(int) {} };",
method(hasParameter(0, hasName("x")))));
}
TEST(HasParameter, DoesNotMatchIfIndexOutOfBounds) {
EXPECT_TRUE(notMatches("class X { void x(int) {} };",
method(hasParameter(42, variable()))));
}
TEST(HasType, MatchesParameterVariableTypesStrictly) {
EXPECT_TRUE(matches("class X { void x(X x) {} };",
method(hasParameter(0, hasType(record(hasName("X")))))));
EXPECT_TRUE(notMatches("class X { void x(const X &x) {} };",
method(hasParameter(0, hasType(record(hasName("X")))))));
EXPECT_TRUE(matches("class X { void x(const X *x) {} };",
method(hasParameter(0, hasType(pointsTo(record(hasName("X"))))))));
EXPECT_TRUE(matches("class X { void x(const X &x) {} };",
method(hasParameter(0, hasType(references(record(hasName("X"))))))));
}
TEST(HasAnyParameter, MatchesIndependentlyOfPosition) {
EXPECT_TRUE(matches("class Y {}; class X { void x(X x, Y y) {} };",
method(hasAnyParameter(hasType(record(hasName("X")))))));
EXPECT_TRUE(matches("class Y {}; class X { void x(Y y, X x) {} };",
method(hasAnyParameter(hasType(record(hasName("X")))))));
}
TEST(Returns, MatchesReturnTypes) {
EXPECT_TRUE(matches("class Y { int f() { return 1; } };",
function(returns(asString("int")))));
EXPECT_TRUE(notMatches("class Y { int f() { return 1; } };",
function(returns(asString("float")))));
EXPECT_TRUE(matches("class Y { Y getMe() { return *this; } };",
function(returns(hasDeclaration(record(hasName("Y")))))));
}
TEST(HasAnyParameter, DoesntMatchIfInnerMatcherDoesntMatch) {
EXPECT_TRUE(notMatches("class Y {}; class X { void x(int) {} };",
method(hasAnyParameter(hasType(record(hasName("X")))))));
}
TEST(HasAnyParameter, DoesNotMatchThisPointer) {
EXPECT_TRUE(notMatches("class Y {}; class X { void x() {} };",
method(hasAnyParameter(hasType(pointsTo(record(hasName("X"))))))));
}
TEST(HasName, MatchesParameterVariableDeclartions) {
EXPECT_TRUE(matches("class Y {}; class X { void x(int x) {} };",
method(hasAnyParameter(hasName("x")))));
EXPECT_TRUE(notMatches("class Y {}; class X { void x(int) {} };",
method(hasAnyParameter(hasName("x")))));
}
TEST(Matcher, ConstructorCall) {
StatementMatcher Constructor = expression(constructorCall());
EXPECT_TRUE(
matches("class X { public: X(); }; void x() { X x; }", Constructor));
EXPECT_TRUE(
matches("class X { public: X(); }; void x() { X x = X(); }",
Constructor));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { X x = 0; }",
Constructor));
EXPECT_TRUE(matches("class X {}; void x(int) { X x; }", Constructor));
}
TEST(Matcher, ConstructorArgument) {
StatementMatcher Constructor = expression(constructorCall(
hasArgument(0, declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { int y; X x(y); }",
Constructor));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { int y; X x = X(y); }",
Constructor));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { int y; X x = y; }",
Constructor));
EXPECT_TRUE(
notMatches("class X { public: X(int); }; void x() { int z; X x(z); }",
Constructor));
StatementMatcher WrongIndex = expression(constructorCall(
hasArgument(42, declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(
notMatches("class X { public: X(int); }; void x() { int y; X x(y); }",
WrongIndex));
}
TEST(Matcher, ConstructorArgumentCount) {
StatementMatcher Constructor1Arg =
expression(constructorCall(argumentCountIs(1)));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { X x(0); }",
Constructor1Arg));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { X x = X(0); }",
Constructor1Arg));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { X x = 0; }",
Constructor1Arg));
EXPECT_TRUE(
notMatches("class X { public: X(int, int); }; void x() { X x(0, 0); }",
Constructor1Arg));
}
TEST(Matcher, BindTemporaryExpression) {
StatementMatcher TempExpression = expression(bindTemporaryExpression());
std::string ClassString = "class string { public: string(); ~string(); }; ";
EXPECT_TRUE(
matches(ClassString +
"string GetStringByValue();"
"void FunctionTakesString(string s);"
"void run() { FunctionTakesString(GetStringByValue()); }",
TempExpression));
EXPECT_TRUE(
notMatches(ClassString +
"string* GetStringPointer(); "
"void FunctionTakesStringPtr(string* s);"
"void run() {"
" string* s = GetStringPointer();"
" FunctionTakesStringPtr(GetStringPointer());"
" FunctionTakesStringPtr(s);"
"}",
TempExpression));
EXPECT_TRUE(
notMatches("class no_dtor {};"
"no_dtor GetObjByValue();"
"void ConsumeObj(no_dtor param);"
"void run() { ConsumeObj(GetObjByValue()); }",
TempExpression));
}
TEST(ConstructorDeclaration, SimpleCase) {
EXPECT_TRUE(matches("class Foo { Foo(int i); };",
constructor(ofClass(hasName("Foo")))));
EXPECT_TRUE(notMatches("class Foo { Foo(int i); };",
constructor(ofClass(hasName("Bar")))));
}
TEST(ConstructorDeclaration, IsImplicit) {
// This one doesn't match because the constructor is not added by the
// compiler (it is not needed).
EXPECT_TRUE(notMatches("class Foo { };",
constructor(isImplicit())));
// The compiler added the implicit default constructor.
EXPECT_TRUE(matches("class Foo { }; Foo* f = new Foo();",
constructor(isImplicit())));
EXPECT_TRUE(matches("class Foo { Foo(){} };",
constructor(unless(isImplicit()))));
}
TEST(DestructorDeclaration, MatchesVirtualDestructor) {
EXPECT_TRUE(matches("class Foo { virtual ~Foo(); };",
destructor(ofClass(hasName("Foo")))));
}
TEST(DestructorDeclaration, DoesNotMatchImplicitDestructor) {
EXPECT_TRUE(notMatches("class Foo {};", destructor(ofClass(hasName("Foo")))));
}
TEST(HasAnyConstructorInitializer, SimpleCase) {
EXPECT_TRUE(notMatches(
"class Foo { Foo() { } };",
constructor(hasAnyConstructorInitializer(anything()))));
EXPECT_TRUE(matches(
"class Foo {"
" Foo() : foo_() { }"
" int foo_;"
"};",
constructor(hasAnyConstructorInitializer(anything()))));
}
TEST(HasAnyConstructorInitializer, ForField) {
static const char Code[] =
"class Baz { };"
"class Foo {"
" Foo() : foo_() { }"
" Baz foo_;"
" Baz bar_;"
"};";
EXPECT_TRUE(matches(Code, constructor(hasAnyConstructorInitializer(
forField(hasType(record(hasName("Baz"))))))));
EXPECT_TRUE(matches(Code, constructor(hasAnyConstructorInitializer(
forField(hasName("foo_"))))));
EXPECT_TRUE(notMatches(Code, constructor(hasAnyConstructorInitializer(
forField(hasType(record(hasName("Bar"))))))));
}
TEST(HasAnyConstructorInitializer, WithInitializer) {
static const char Code[] =
"class Foo {"
" Foo() : foo_(0) { }"
" int foo_;"
"};";
EXPECT_TRUE(matches(Code, constructor(hasAnyConstructorInitializer(
withInitializer(integerLiteral(equals(0)))))));
EXPECT_TRUE(notMatches(Code, constructor(hasAnyConstructorInitializer(
withInitializer(integerLiteral(equals(1)))))));
}
TEST(HasAnyConstructorInitializer, IsWritten) {
static const char Code[] =
"struct Bar { Bar(){} };"
"class Foo {"
" Foo() : foo_() { }"
" Bar foo_;"
" Bar bar_;"
"};";
EXPECT_TRUE(matches(Code, constructor(hasAnyConstructorInitializer(
allOf(forField(hasName("foo_")), isWritten())))));
EXPECT_TRUE(notMatches(Code, constructor(hasAnyConstructorInitializer(
allOf(forField(hasName("bar_")), isWritten())))));
EXPECT_TRUE(matches(Code, constructor(hasAnyConstructorInitializer(
allOf(forField(hasName("bar_")), unless(isWritten()))))));
}
TEST(Matcher, NewExpression) {
StatementMatcher New = expression(newExpression());
EXPECT_TRUE(matches("class X { public: X(); }; void x() { new X; }", New));
EXPECT_TRUE(
matches("class X { public: X(); }; void x() { new X(); }", New));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { new X(0); }", New));
EXPECT_TRUE(matches("class X {}; void x(int) { new X; }", New));
}
TEST(Matcher, NewExpressionArgument) {
StatementMatcher New = expression(constructorCall(
hasArgument(
0, declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { int y; new X(y); }",
New));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { int y; new X(y); }",
New));
EXPECT_TRUE(
notMatches("class X { public: X(int); }; void x() { int z; new X(z); }",
New));
StatementMatcher WrongIndex = expression(constructorCall(
hasArgument(
42, declarationReference(to(variable(hasName("y")))))));
EXPECT_TRUE(
notMatches("class X { public: X(int); }; void x() { int y; new X(y); }",
WrongIndex));
}
TEST(Matcher, NewExpressionArgumentCount) {
StatementMatcher New = constructorCall(argumentCountIs(1));
EXPECT_TRUE(
matches("class X { public: X(int); }; void x() { new X(0); }", New));
EXPECT_TRUE(
notMatches("class X { public: X(int, int); }; void x() { new X(0, 0); }",
New));
}
TEST(Matcher, DeleteExpression) {
EXPECT_TRUE(matches("struct A {}; void f(A* a) { delete a; }",
deleteExpression()));
}
TEST(Matcher, DefaultArgument) {
StatementMatcher Arg = defaultArgument();
EXPECT_TRUE(matches("void x(int, int = 0) { int y; x(y); }", Arg));
EXPECT_TRUE(
matches("class X { void x(int, int = 0) { int y; x(y); } };", Arg));
EXPECT_TRUE(notMatches("void x(int, int = 0) { int y; x(y, 0); }", Arg));
}
TEST(Matcher, StringLiterals) {
StatementMatcher Literal = expression(stringLiteral());
EXPECT_TRUE(matches("const char *s = \"string\";", Literal));
// wide string
EXPECT_TRUE(matches("const wchar_t *s = L\"string\";", Literal));
// with escaped characters
EXPECT_TRUE(matches("const char *s = \"\x05five\";", Literal));
// no matching -- though the data type is the same, there is no string literal
EXPECT_TRUE(notMatches("const char s[1] = {'a'};", Literal));
}
TEST(Matcher, CharacterLiterals) {
StatementMatcher CharLiteral = expression(characterLiteral());
EXPECT_TRUE(matches("const char c = 'c';", CharLiteral));
// wide character
EXPECT_TRUE(matches("const char c = L'c';", CharLiteral));
// wide character, Hex encoded, NOT MATCHED!
EXPECT_TRUE(notMatches("const wchar_t c = 0x2126;", CharLiteral));
EXPECT_TRUE(notMatches("const char c = 0x1;", CharLiteral));
}
TEST(Matcher, IntegerLiterals) {
StatementMatcher HasIntLiteral = expression(integerLiteral());
EXPECT_TRUE(matches("int i = 10;", HasIntLiteral));
EXPECT_TRUE(matches("int i = 0x1AB;", HasIntLiteral));
EXPECT_TRUE(matches("int i = 10L;", HasIntLiteral));
EXPECT_TRUE(matches("int i = 10U;", HasIntLiteral));
// Non-matching cases (character literals, float and double)
EXPECT_TRUE(notMatches("int i = L'a';",
HasIntLiteral)); // this is actually a character
// literal cast to int
EXPECT_TRUE(notMatches("int i = 'a';", HasIntLiteral));
EXPECT_TRUE(notMatches("int i = 1e10;", HasIntLiteral));
EXPECT_TRUE(notMatches("int i = 10.0;", HasIntLiteral));
}
TEST(Matcher, Conditions) {
StatementMatcher Condition = ifStmt(hasCondition(boolLiteral(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(MatchBinaryOperator, HasOperatorName) {
StatementMatcher OperatorOr = binaryOperator(hasOperatorName("||"));
EXPECT_TRUE(matches("void x() { true || false; }", OperatorOr));
EXPECT_TRUE(notMatches("void x() { true && false; }", OperatorOr));
}
TEST(MatchBinaryOperator, HasLHSAndHasRHS) {
StatementMatcher OperatorTrueFalse =
binaryOperator(hasLHS(boolLiteral(equals(true))),
hasRHS(boolLiteral(equals(false))));
EXPECT_TRUE(matches("void x() { true || false; }", OperatorTrueFalse));
EXPECT_TRUE(matches("void x() { true && false; }", OperatorTrueFalse));
EXPECT_TRUE(notMatches("void x() { false || true; }", OperatorTrueFalse));
}
TEST(MatchBinaryOperator, HasEitherOperand) {
StatementMatcher HasOperand =
binaryOperator(hasEitherOperand(boolLiteral(equals(false))));
EXPECT_TRUE(matches("void x() { true || false; }", HasOperand));
EXPECT_TRUE(matches("void x() { false && true; }", HasOperand));
EXPECT_TRUE(notMatches("void x() { true || true; }", HasOperand));
}
TEST(Matcher, BinaryOperatorTypes) {
// Integration test that verifies the AST provides all binary operators in
// a way we expect.
// FIXME: Operator ','
EXPECT_TRUE(
matches("void x() { 3, 4; }", binaryOperator(hasOperatorName(","))));
EXPECT_TRUE(
matches("bool b; bool c = (b = true);",
binaryOperator(hasOperatorName("="))));
EXPECT_TRUE(
matches("bool b = 1 != 2;", binaryOperator(hasOperatorName("!="))));
EXPECT_TRUE(
matches("bool b = 1 == 2;", binaryOperator(hasOperatorName("=="))));
EXPECT_TRUE(matches("bool b = 1 < 2;", binaryOperator(hasOperatorName("<"))));
EXPECT_TRUE(
matches("bool b = 1 <= 2;", binaryOperator(hasOperatorName("<="))));
EXPECT_TRUE(
matches("int i = 1 << 2;", binaryOperator(hasOperatorName("<<"))));
EXPECT_TRUE(
matches("int i = 1; int j = (i <<= 2);",
binaryOperator(hasOperatorName("<<="))));
EXPECT_TRUE(matches("bool b = 1 > 2;", binaryOperator(hasOperatorName(">"))));
EXPECT_TRUE(
matches("bool b = 1 >= 2;", binaryOperator(hasOperatorName(">="))));
EXPECT_TRUE(
matches("int i = 1 >> 2;", binaryOperator(hasOperatorName(">>"))));
EXPECT_TRUE(
matches("int i = 1; int j = (i >>= 2);",
binaryOperator(hasOperatorName(">>="))));
EXPECT_TRUE(
matches("int i = 42 ^ 23;", binaryOperator(hasOperatorName("^"))));
EXPECT_TRUE(
matches("int i = 42; int j = (i ^= 42);",
binaryOperator(hasOperatorName("^="))));
EXPECT_TRUE(
matches("int i = 42 % 23;", binaryOperator(hasOperatorName("%"))));
EXPECT_TRUE(
matches("int i = 42; int j = (i %= 42);",
binaryOperator(hasOperatorName("%="))));
EXPECT_TRUE(
matches("bool b = 42 &23;", binaryOperator(hasOperatorName("&"))));
EXPECT_TRUE(
matches("bool b = true && false;",
binaryOperator(hasOperatorName("&&"))));
EXPECT_TRUE(
matches("bool b = true; bool c = (b &= false);",
binaryOperator(hasOperatorName("&="))));
EXPECT_TRUE(
matches("bool b = 42 | 23;", binaryOperator(hasOperatorName("|"))));
EXPECT_TRUE(
matches("bool b = true || false;",
binaryOperator(hasOperatorName("||"))));
EXPECT_TRUE(
matches("bool b = true; bool c = (b |= false);",
binaryOperator(hasOperatorName("|="))));
EXPECT_TRUE(
matches("int i = 42 *23;", binaryOperator(hasOperatorName("*"))));
EXPECT_TRUE(
matches("int i = 42; int j = (i *= 23);",
binaryOperator(hasOperatorName("*="))));
EXPECT_TRUE(
matches("int i = 42 / 23;", binaryOperator(hasOperatorName("/"))));
EXPECT_TRUE(
matches("int i = 42; int j = (i /= 23);",
binaryOperator(hasOperatorName("/="))));
EXPECT_TRUE(
matches("int i = 42 + 23;", binaryOperator(hasOperatorName("+"))));
EXPECT_TRUE(
matches("int i = 42; int j = (i += 23);",
binaryOperator(hasOperatorName("+="))));
EXPECT_TRUE(
matches("int i = 42 - 23;", binaryOperator(hasOperatorName("-"))));
EXPECT_TRUE(
matches("int i = 42; int j = (i -= 23);",
binaryOperator(hasOperatorName("-="))));
EXPECT_TRUE(
matches("struct A { void x() { void (A::*a)(); (this->*a)(); } };",
binaryOperator(hasOperatorName("->*"))));
EXPECT_TRUE(
matches("struct A { void x() { void (A::*a)(); ((*this).*a)(); } };",
binaryOperator(hasOperatorName(".*"))));
// Member expressions as operators are not supported in matches.
EXPECT_TRUE(
notMatches("struct A { void x(A *a) { a->x(this); } };",
binaryOperator(hasOperatorName("->"))));
// Initializer assignments are not represented as operator equals.
EXPECT_TRUE(
notMatches("bool b = true;", binaryOperator(hasOperatorName("="))));
// Array indexing is not represented as operator.
EXPECT_TRUE(notMatches("int a[42]; void x() { a[23]; }", unaryOperator()));
// Overloaded operators do not match at all.
EXPECT_TRUE(notMatches(
"struct A { bool operator&&(const A &a) const { return false; } };"
"void x() { A a, b; a && b; }",
binaryOperator()));
}
TEST(MatchUnaryOperator, HasOperatorName) {
StatementMatcher OperatorNot = unaryOperator(hasOperatorName("!"));
EXPECT_TRUE(matches("void x() { !true; } ", OperatorNot));
EXPECT_TRUE(notMatches("void x() { true; } ", OperatorNot));
}
TEST(MatchUnaryOperator, HasUnaryOperand) {
StatementMatcher OperatorOnFalse =
unaryOperator(hasUnaryOperand(boolLiteral(equals(false))));
EXPECT_TRUE(matches("void x() { !false; }", OperatorOnFalse));
EXPECT_TRUE(notMatches("void x() { !true; }", OperatorOnFalse));
}
TEST(Matcher, UnaryOperatorTypes) {
// Integration test that verifies the AST provides all unary operators in
// a way we expect.
EXPECT_TRUE(matches("bool b = !true;", unaryOperator(hasOperatorName("!"))));
EXPECT_TRUE(
matches("bool b; bool *p = &b;", unaryOperator(hasOperatorName("&"))));
EXPECT_TRUE(matches("int i = ~ 1;", unaryOperator(hasOperatorName("~"))));
EXPECT_TRUE(
matches("bool *p; bool b = *p;", unaryOperator(hasOperatorName("*"))));
EXPECT_TRUE(
matches("int i; int j = +i;", unaryOperator(hasOperatorName("+"))));
EXPECT_TRUE(
matches("int i; int j = -i;", unaryOperator(hasOperatorName("-"))));
EXPECT_TRUE(
matches("int i; int j = ++i;", unaryOperator(hasOperatorName("++"))));
EXPECT_TRUE(
matches("int i; int j = i++;", unaryOperator(hasOperatorName("++"))));
EXPECT_TRUE(
matches("int i; int j = --i;", unaryOperator(hasOperatorName("--"))));
EXPECT_TRUE(
matches("int i; int j = i--;", unaryOperator(hasOperatorName("--"))));
// We don't match conversion operators.
EXPECT_TRUE(notMatches("int i; double d = (double)i;", unaryOperator()));
// Function calls are not represented as operator.
EXPECT_TRUE(notMatches("void f(); void x() { f(); }", unaryOperator()));
// Overloaded operators do not match at all.
// FIXME: We probably want to add that.
EXPECT_TRUE(notMatches(
"struct A { bool operator!() const { return false; } };"
"void x() { A a; !a; }", unaryOperator(hasOperatorName("!"))));
}
TEST(Matcher, ConditionalOperator) {
StatementMatcher Conditional = conditionalOperator(
hasCondition(boolLiteral(equals(true))),
hasTrueExpression(boolLiteral(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(boolLiteral(equals(false))));
EXPECT_TRUE(matches("void x() { true ? true : false; }", ConditionalFalse));
EXPECT_TRUE(
notMatches("void x() { true ? false : true; }", ConditionalFalse));
}
TEST(ArraySubscriptMatchers, ArraySubscripts) {
EXPECT_TRUE(matches("int i[2]; void f() { i[1] = 1; }",
arraySubscriptExpr()));
EXPECT_TRUE(notMatches("int i; void f() { i = 1; }",
arraySubscriptExpr()));
}
TEST(ArraySubscriptMatchers, ArrayIndex) {
EXPECT_TRUE(matches(
"int i[2]; void f() { i[1] = 1; }",
arraySubscriptExpr(hasIndex(integerLiteral(equals(1))))));
EXPECT_TRUE(matches(
"int i[2]; void f() { 1[i] = 1; }",
arraySubscriptExpr(hasIndex(integerLiteral(equals(1))))));
EXPECT_TRUE(notMatches(
"int i[2]; void f() { i[1] = 1; }",
arraySubscriptExpr(hasIndex(integerLiteral(equals(0))))));
}
TEST(ArraySubscriptMatchers, MatchesArrayBase) {
EXPECT_TRUE(matches(
"int i[2]; void f() { i[1] = 2; }",
arraySubscriptExpr(hasBase(implicitCast(
hasSourceExpression(declarationReference()))))));
}
TEST(Matcher, HasNameSupportsNamespaces) {
EXPECT_TRUE(matches("namespace a { namespace b { class C; } }",
record(hasName("a::b::C"))));
EXPECT_TRUE(matches("namespace a { namespace b { class C; } }",
record(hasName("::a::b::C"))));
EXPECT_TRUE(matches("namespace a { namespace b { class C; } }",
record(hasName("b::C"))));
EXPECT_TRUE(matches("namespace a { namespace b { class C; } }",
record(hasName("C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("c::b::C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("a::c::C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("a::b::A"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("::C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("::b::C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("z::a::b::C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class C; } }",
record(hasName("a+b::C"))));
EXPECT_TRUE(notMatches("namespace a { namespace b { class AC; } }",
record(hasName("C"))));
}
TEST(Matcher, HasNameSupportsOuterClasses) {
EXPECT_TRUE(
matches("class A { class B { class C; }; };", record(hasName("A::B::C"))));
EXPECT_TRUE(
matches("class A { class B { class C; }; };",
record(hasName("::A::B::C"))));
EXPECT_TRUE(
matches("class A { class B { class C; }; };", record(hasName("B::C"))));
EXPECT_TRUE(
matches("class A { class B { class C; }; };", record(hasName("C"))));
EXPECT_TRUE(
notMatches("class A { class B { class C; }; };",
record(hasName("c::B::C"))));
EXPECT_TRUE(
notMatches("class A { class B { class C; }; };",
record(hasName("A::c::C"))));
EXPECT_TRUE(
notMatches("class A { class B { class C; }; };",
record(hasName("A::B::A"))));
EXPECT_TRUE(
notMatches("class A { class B { class C; }; };", record(hasName("::C"))));
EXPECT_TRUE(
notMatches("class A { class B { class C; }; };",
record(hasName("::B::C"))));
EXPECT_TRUE(notMatches("class A { class B { class C; }; };",
record(hasName("z::A::B::C"))));
EXPECT_TRUE(
notMatches("class A { class B { class C; }; };",
record(hasName("A+B::C"))));
}
TEST(Matcher, IsDefinition) {
DeclarationMatcher DefinitionOfClassA =
record(hasName("A"), isDefinition());
EXPECT_TRUE(matches("class A {};", DefinitionOfClassA));
EXPECT_TRUE(notMatches("class A;", DefinitionOfClassA));
DeclarationMatcher DefinitionOfVariableA =
variable(hasName("a"), isDefinition());
EXPECT_TRUE(matches("int a;", DefinitionOfVariableA));
EXPECT_TRUE(notMatches("extern int a;", DefinitionOfVariableA));
DeclarationMatcher DefinitionOfMethodA =
method(hasName("a"), isDefinition());
EXPECT_TRUE(matches("class A { void a() {} };", DefinitionOfMethodA));
EXPECT_TRUE(notMatches("class A { void a(); };", DefinitionOfMethodA));
}
TEST(Matcher, OfClass) {
StatementMatcher Constructor = constructorCall(hasDeclaration(method(
ofClass(hasName("X")))));
EXPECT_TRUE(
matches("class X { public: X(); }; void x(int) { X x; }", Constructor));
EXPECT_TRUE(
matches("class X { public: X(); }; void x(int) { X x = X(); }",
Constructor));
EXPECT_TRUE(
notMatches("class Y { public: Y(); }; void x(int) { Y y; }",
Constructor));
}
TEST(Matcher, VisitsTemplateInstantiations) {
EXPECT_TRUE(matches(
"class A { public: void x(); };"
"template <typename T> class B { public: void y() { T t; t.x(); } };"
"void f() { B<A> b; b.y(); }", call(callee(method(hasName("x"))))));
EXPECT_TRUE(matches(
"class A { public: void x(); };"
"class C {"
" public:"
" template <typename T> class B { public: void y() { T t; t.x(); } };"
"};"
"void f() {"
" C::B<A> b; b.y();"
"}", record(hasName("C"),
hasDescendant(call(callee(method(hasName("x"))))))));
}
TEST(Matcher, HandlesNullQualTypes) {
// FIXME: Add a Type matcher so we can replace uses of this
// variable with Type(True())
const TypeMatcher AnyType = anything();
// We don't really care whether this matcher succeeds; we're testing that
// it completes without crashing.
EXPECT_TRUE(matches(
"struct A { };"
"template <typename T>"
"void f(T t) {"
" T local_t(t /* this becomes a null QualType in the AST */);"
"}"
"void g() {"
" f(0);"
"}",
expression(hasType(TypeMatcher(
anyOf(
TypeMatcher(hasDeclaration(anything())),
pointsTo(AnyType),
references(AnyType)
// Other QualType matchers should go here.
))))));
}
// For testing AST_MATCHER_P().
AST_MATCHER_P(Decl, just, internal::Matcher<Decl>, AMatcher) {
// Make sure all special variables are used: node, match_finder,
// bound_nodes_builder, and the parameter named 'AMatcher'.
return AMatcher.matches(Node, Finder, Builder);
}
TEST(AstMatcherPMacro, Works) {
DeclarationMatcher HasClassB = just(has(record(hasName("B")).bind("b")));
EXPECT_TRUE(matchAndVerifyResultTrue("class A { class B {}; };",
HasClassB, new VerifyIdIsBoundToDecl<Decl>("b")));
EXPECT_TRUE(matchAndVerifyResultFalse("class A { class B {}; };",
HasClassB, new VerifyIdIsBoundToDecl<Decl>("a")));
EXPECT_TRUE(matchAndVerifyResultFalse("class A { class C {}; };",
HasClassB, new VerifyIdIsBoundToDecl<Decl>("b")));
}
AST_POLYMORPHIC_MATCHER_P(
polymorphicHas, internal::Matcher<Decl>, AMatcher) {
TOOLING_COMPILE_ASSERT((llvm::is_same<NodeType, Decl>::value) ||
(llvm::is_same<NodeType, Stmt>::value),
assert_node_type_is_accessible);
internal::TypedBaseMatcher<Decl> ChildMatcher(AMatcher);
return Finder->matchesChildOf(
Node, ChildMatcher, Builder,
ASTMatchFinder::TK_IgnoreImplicitCastsAndParentheses,
ASTMatchFinder::BK_First);
}
TEST(AstPolymorphicMatcherPMacro, Works) {
DeclarationMatcher HasClassB = polymorphicHas(record(hasName("B")).bind("b"));
EXPECT_TRUE(matchAndVerifyResultTrue("class A { class B {}; };",
HasClassB, new VerifyIdIsBoundToDecl<Decl>("b")));
EXPECT_TRUE(matchAndVerifyResultFalse("class A { class B {}; };",
HasClassB, new VerifyIdIsBoundToDecl<Decl>("a")));
EXPECT_TRUE(matchAndVerifyResultFalse("class A { class C {}; };",
HasClassB, new VerifyIdIsBoundToDecl<Decl>("b")));
StatementMatcher StatementHasClassB =
polymorphicHas(record(hasName("B")));
EXPECT_TRUE(matches("void x() { class B {}; }", StatementHasClassB));
}
TEST(For, FindsForLoops) {
EXPECT_TRUE(matches("void f() { for(;;); }", forStmt()));
EXPECT_TRUE(matches("void f() { if(true) for(;;); }", forStmt()));
}
TEST(For, ForLoopInternals) {
EXPECT_TRUE(matches("void f(){ int i; for (; i < 3 ; ); }",
forStmt(hasCondition(anything()))));
EXPECT_TRUE(matches("void f() { for (int i = 0; ;); }",
forStmt(hasLoopInit(anything()))));
}
TEST(For, NegativeForLoopInternals) {
EXPECT_TRUE(notMatches("void f(){ for (int i = 0; ; ++i); }",
forStmt(hasCondition(expression()))));
EXPECT_TRUE(notMatches("void f() {int i; for (; i < 4; ++i) {} }",
forStmt(hasLoopInit(anything()))));
}
TEST(For, ReportsNoFalsePositives) {
EXPECT_TRUE(notMatches("void f() { ; }", forStmt()));
EXPECT_TRUE(notMatches("void f() { if(true); }", forStmt()));
}
TEST(CompoundStatement, HandlesSimpleCases) {
EXPECT_TRUE(notMatches("void f();", compoundStatement()));
EXPECT_TRUE(matches("void f() {}", compoundStatement()));
EXPECT_TRUE(matches("void f() {{}}", compoundStatement()));
}
TEST(CompoundStatement, DoesNotMatchEmptyStruct) {
// It's not a compound statement just because there's "{}" in the source
// text. This is an AST search, not grep.
EXPECT_TRUE(notMatches("namespace n { struct S {}; }",
compoundStatement()));
EXPECT_TRUE(matches("namespace n { struct S { void f() {{}} }; }",
compoundStatement()));
}
TEST(HasBody, FindsBodyOfForWhileDoLoops) {
EXPECT_TRUE(matches("void f() { for(;;) {} }",
forStmt(hasBody(compoundStatement()))));
EXPECT_TRUE(notMatches("void f() { for(;;); }",
forStmt(hasBody(compoundStatement()))));
EXPECT_TRUE(matches("void f() { while(true) {} }",
whileStmt(hasBody(compoundStatement()))));
EXPECT_TRUE(matches("void f() { do {} while(true); }",
doStmt(hasBody(compoundStatement()))));
}
TEST(HasAnySubstatement, MatchesForTopLevelCompoundStatement) {
// The simplest case: every compound statement is in a function
// definition, and the function body itself must be a compound
// statement.
EXPECT_TRUE(matches("void f() { for (;;); }",
compoundStatement(hasAnySubstatement(forStmt()))));
}
TEST(HasAnySubstatement, IsNotRecursive) {
// It's really "has any immediate substatement".
EXPECT_TRUE(notMatches("void f() { if (true) for (;;); }",
compoundStatement(hasAnySubstatement(forStmt()))));
}
TEST(HasAnySubstatement, MatchesInNestedCompoundStatements) {
EXPECT_TRUE(matches("void f() { if (true) { for (;;); } }",
compoundStatement(hasAnySubstatement(forStmt()))));
}
TEST(HasAnySubstatement, FindsSubstatementBetweenOthers) {
EXPECT_TRUE(matches("void f() { 1; 2; 3; for (;;); 4; 5; 6; }",
compoundStatement(hasAnySubstatement(forStmt()))));
}
TEST(StatementCountIs, FindsNoStatementsInAnEmptyCompoundStatement) {
EXPECT_TRUE(matches("void f() { }",
compoundStatement(statementCountIs(0))));
EXPECT_TRUE(notMatches("void f() {}",
compoundStatement(statementCountIs(1))));
}
TEST(StatementCountIs, AppearsToMatchOnlyOneCount) {
EXPECT_TRUE(matches("void f() { 1; }",
compoundStatement(statementCountIs(1))));
EXPECT_TRUE(notMatches("void f() { 1; }",
compoundStatement(statementCountIs(0))));
EXPECT_TRUE(notMatches("void f() { 1; }",
compoundStatement(statementCountIs(2))));
}
TEST(StatementCountIs, WorksWithMultipleStatements) {
EXPECT_TRUE(matches("void f() { 1; 2; 3; }",
compoundStatement(statementCountIs(3))));
}
TEST(StatementCountIs, WorksWithNestedCompoundStatements) {
EXPECT_TRUE(matches("void f() { { 1; } { 1; 2; 3; 4; } }",
compoundStatement(statementCountIs(1))));
EXPECT_TRUE(matches("void f() { { 1; } { 1; 2; 3; 4; } }",
compoundStatement(statementCountIs(2))));
EXPECT_TRUE(notMatches("void f() { { 1; } { 1; 2; 3; 4; } }",
compoundStatement(statementCountIs(3))));
EXPECT_TRUE(matches("void f() { { 1; } { 1; 2; 3; 4; } }",
compoundStatement(statementCountIs(4))));
}
TEST(Member, WorksInSimplestCase) {
EXPECT_TRUE(matches("struct { int first; } s; int i(s.first);",
memberExpression(member(hasName("first")))));
}
TEST(Member, DoesNotMatchTheBaseExpression) {
// Don't pick out the wrong part of the member expression, this should
// be checking the member (name) only.
EXPECT_TRUE(notMatches("struct { int i; } first; int i(first.i);",
memberExpression(member(hasName("first")))));
}
TEST(Member, MatchesInMemberFunctionCall) {
EXPECT_TRUE(matches("void f() {"
" struct { void first() {}; } s;"
" s.first();"
"};",
memberExpression(member(hasName("first")))));
}
TEST(HasObjectExpression, DoesNotMatchMember) {
EXPECT_TRUE(notMatches(
"class X {}; struct Z { X m; }; void f(Z z) { z.m; }",
memberExpression(hasObjectExpression(hasType(record(hasName("X")))))));
}
TEST(HasObjectExpression, MatchesBaseOfVariable) {
EXPECT_TRUE(matches(
"struct X { int m; }; void f(X x) { x.m; }",
memberExpression(hasObjectExpression(hasType(record(hasName("X")))))));
EXPECT_TRUE(matches(
"struct X { int m; }; void f(X* x) { x->m; }",
memberExpression(hasObjectExpression(
hasType(pointsTo(record(hasName("X"))))))));
}
TEST(HasObjectExpression,
MatchesObjectExpressionOfImplicitlyFormedMemberExpression) {
EXPECT_TRUE(matches(
"class X {}; struct S { X m; void f() { this->m; } };",
memberExpression(hasObjectExpression(
hasType(pointsTo(record(hasName("S"))))))));
EXPECT_TRUE(matches(
"class X {}; struct S { X m; void f() { m; } };",
memberExpression(hasObjectExpression(
hasType(pointsTo(record(hasName("S"))))))));
}
TEST(Field, DoesNotMatchNonFieldMembers) {
EXPECT_TRUE(notMatches("class X { void m(); };", field(hasName("m"))));
EXPECT_TRUE(notMatches("class X { class m {}; };", field(hasName("m"))));
EXPECT_TRUE(notMatches("class X { enum { m }; };", field(hasName("m"))));
EXPECT_TRUE(notMatches("class X { enum m {}; };", field(hasName("m"))));
}
TEST(Field, MatchesField) {
EXPECT_TRUE(matches("class X { int m; };", field(hasName("m"))));
}
TEST(IsConstQualified, MatchesConstInt) {
EXPECT_TRUE(matches("const int i = 42;",
variable(hasType(isConstQualified()))));
}
TEST(IsConstQualified, MatchesConstPointer) {
EXPECT_TRUE(matches("int i = 42; int* const p(&i);",
variable(hasType(isConstQualified()))));
}
TEST(IsConstQualified, MatchesThroughTypedef) {
EXPECT_TRUE(matches("typedef const int const_int; const_int i = 42;",
variable(hasType(isConstQualified()))));
EXPECT_TRUE(matches("typedef int* int_ptr; const int_ptr p(0);",
variable(hasType(isConstQualified()))));
}
TEST(IsConstQualified, DoesNotMatchInappropriately) {
EXPECT_TRUE(notMatches("typedef int nonconst_int; nonconst_int i = 42;",
variable(hasType(isConstQualified()))));
EXPECT_TRUE(notMatches("int const* p;",
variable(hasType(isConstQualified()))));
}
TEST(ReinterpretCast, MatchesSimpleCase) {
EXPECT_TRUE(matches("char* p = reinterpret_cast<char*>(&p);",
expression(reinterpretCast())));
}
TEST(ReinterpretCast, DoesNotMatchOtherCasts) {
EXPECT_TRUE(notMatches("char* p = (char*)(&p);",
expression(reinterpretCast())));
EXPECT_TRUE(notMatches("char q, *p = const_cast<char*>(&q);",
expression(reinterpretCast())));
EXPECT_TRUE(notMatches("void* p = static_cast<void*>(&p);",
expression(reinterpretCast())));
EXPECT_TRUE(notMatches("struct B { virtual ~B() {} }; struct D : B {};"
"B b;"
"D* p = dynamic_cast<D*>(&b);",
expression(reinterpretCast())));
}
TEST(FunctionalCast, MatchesSimpleCase) {
std::string foo_class = "class Foo { public: Foo(char*); };";
EXPECT_TRUE(matches(foo_class + "void r() { Foo f = Foo(\"hello world\"); }",
expression(functionalCast())));
}
TEST(FunctionalCast, DoesNotMatchOtherCasts) {
std::string FooClass = "class Foo { public: Foo(char*); };";
EXPECT_TRUE(
notMatches(FooClass + "void r() { Foo f = (Foo) \"hello world\"; }",
expression(functionalCast())));
EXPECT_TRUE(
notMatches(FooClass + "void r() { Foo f = \"hello world\"; }",
expression(functionalCast())));
}
TEST(DynamicCast, MatchesSimpleCase) {
EXPECT_TRUE(matches("struct B { virtual ~B() {} }; struct D : B {};"
"B b;"
"D* p = dynamic_cast<D*>(&b);",
expression(dynamicCast())));
}
TEST(StaticCast, MatchesSimpleCase) {
EXPECT_TRUE(matches("void* p(static_cast<void*>(&p));",
expression(staticCast())));
}
TEST(StaticCast, DoesNotMatchOtherCasts) {
EXPECT_TRUE(notMatches("char* p = (char*)(&p);",
expression(staticCast())));
EXPECT_TRUE(notMatches("char q, *p = const_cast<char*>(&q);",
expression(staticCast())));
EXPECT_TRUE(notMatches("void* p = reinterpret_cast<char*>(&p);",
expression(staticCast())));
EXPECT_TRUE(notMatches("struct B { virtual ~B() {} }; struct D : B {};"
"B b;"
"D* p = dynamic_cast<D*>(&b);",
expression(staticCast())));
}
TEST(HasDestinationType, MatchesSimpleCase) {
EXPECT_TRUE(matches("char* p = static_cast<char*>(0);",
expression(
staticCast(hasDestinationType(
pointsTo(TypeMatcher(anything())))))));
}
TEST(HasSourceExpression, MatchesImplicitCasts) {
EXPECT_TRUE(matches("class string {}; class URL { public: URL(string s); };"
"void r() {string a_string; URL url = a_string; }",
expression(implicitCast(
hasSourceExpression(constructorCall())))));
}
TEST(HasSourceExpression, MatchesExplicitCasts) {
EXPECT_TRUE(matches("float x = static_cast<float>(42);",
expression(explicitCast(
hasSourceExpression(hasDescendant(
expression(integerLiteral())))))));
}
TEST(Statement, DoesNotMatchDeclarations) {
EXPECT_TRUE(notMatches("class X {};", statement()));
}
TEST(Statement, MatchesCompoundStatments) {
EXPECT_TRUE(matches("void x() {}", statement()));
}
TEST(DeclarationStatement, DoesNotMatchCompoundStatements) {
EXPECT_TRUE(notMatches("void x() {}", declarationStatement()));
}
TEST(DeclarationStatement, MatchesVariableDeclarationStatements) {
EXPECT_TRUE(matches("void x() { int a; }", declarationStatement()));
}
TEST(InitListExpression, MatchesInitListExpression) {
EXPECT_TRUE(matches("int a[] = { 1, 2 };",
initListExpr(hasType(asString("int [2]")))));
EXPECT_TRUE(matches("struct B { int x, y; }; B b = { 5, 6 };",
initListExpr(hasType(record(hasName("B"))))));
}
TEST(UsingDeclaration, MatchesUsingDeclarations) {
EXPECT_TRUE(matches("namespace X { int x; } using X::x;",
usingDecl()));
}
TEST(UsingDeclaration, MatchesShadowUsingDelcarations) {
EXPECT_TRUE(matches("namespace f { int a; } using f::a;",
usingDecl(hasAnyUsingShadowDecl(hasName("a")))));
}
TEST(UsingDeclaration, MatchesSpecificTarget) {
EXPECT_TRUE(matches("namespace f { int a; void b(); } using f::b;",
usingDecl(hasAnyUsingShadowDecl(
hasTargetDecl(function())))));
EXPECT_TRUE(notMatches("namespace f { int a; void b(); } using f::a;",
usingDecl(hasAnyUsingShadowDecl(
hasTargetDecl(function())))));
}
TEST(UsingDeclaration, ThroughUsingDeclaration) {
EXPECT_TRUE(matches(
"namespace a { void f(); } using a::f; void g() { f(); }",
declarationReference(throughUsingDecl(anything()))));
EXPECT_TRUE(notMatches(
"namespace a { void f(); } using a::f; void g() { a::f(); }",
declarationReference(throughUsingDecl(anything()))));
}
TEST(While, MatchesWhileLoops) {
EXPECT_TRUE(notMatches("void x() {}", whileStmt()));
EXPECT_TRUE(matches("void x() { while(true); }", whileStmt()));
EXPECT_TRUE(notMatches("void x() { do {} while(true); }", whileStmt()));
}
TEST(Do, MatchesDoLoops) {
EXPECT_TRUE(matches("void x() { do {} while(true); }", doStmt()));
EXPECT_TRUE(matches("void x() { do ; while(false); }", doStmt()));
}
TEST(Do, DoesNotMatchWhileLoops) {
EXPECT_TRUE(notMatches("void x() { while(true) {} }", doStmt()));
}
TEST(SwitchCase, MatchesCase) {
EXPECT_TRUE(matches("void x() { switch(42) { case 42:; } }", switchCase()));
EXPECT_TRUE(matches("void x() { switch(42) { default:; } }", switchCase()));
EXPECT_TRUE(matches("void x() { switch(42) default:; }", switchCase()));
EXPECT_TRUE(notMatches("void x() { switch(42) {} }", switchCase()));
}
TEST(HasConditionVariableStatement, DoesNotMatchCondition) {
EXPECT_TRUE(notMatches(
"void x() { if(true) {} }",
ifStmt(hasConditionVariableStatement(declarationStatement()))));
EXPECT_TRUE(notMatches(
"void x() { int x; if((x = 42)) {} }",
ifStmt(hasConditionVariableStatement(declarationStatement()))));
}
TEST(HasConditionVariableStatement, MatchesConditionVariables) {
EXPECT_TRUE(matches(
"void x() { if(int* a = 0) {} }",
ifStmt(hasConditionVariableStatement(declarationStatement()))));
}
TEST(ForEach, BindsOneNode) {
EXPECT_TRUE(matchAndVerifyResultTrue("class C { int x; };",
record(hasName("C"), forEach(field(hasName("x")).bind("x"))),
new VerifyIdIsBoundToDecl<FieldDecl>("x", 1)));
}
TEST(ForEach, BindsMultipleNodes) {
EXPECT_TRUE(matchAndVerifyResultTrue("class C { int x; int y; int z; };",
record(hasName("C"), forEach(field().bind("f"))),
new VerifyIdIsBoundToDecl<FieldDecl>("f", 3)));
}
TEST(ForEach, BindsRecursiveCombinations) {
EXPECT_TRUE(matchAndVerifyResultTrue(
"class C { class D { int x; int y; }; class E { int y; int z; }; };",
record(hasName("C"), forEach(record(forEach(field().bind("f"))))),
new VerifyIdIsBoundToDecl<FieldDecl>("f", 4)));
}
TEST(ForEachDescendant, BindsOneNode) {
EXPECT_TRUE(matchAndVerifyResultTrue("class C { class D { int x; }; };",
record(hasName("C"), forEachDescendant(field(hasName("x")).bind("x"))),
new VerifyIdIsBoundToDecl<FieldDecl>("x", 1)));
}
TEST(ForEachDescendant, BindsMultipleNodes) {
EXPECT_TRUE(matchAndVerifyResultTrue(
"class C { class D { int x; int y; }; "
" class E { class F { int y; int z; }; }; };",
record(hasName("C"), forEachDescendant(field().bind("f"))),
new VerifyIdIsBoundToDecl<FieldDecl>("f", 4)));
}
TEST(ForEachDescendant, BindsRecursiveCombinations) {
EXPECT_TRUE(matchAndVerifyResultTrue(
"class C { class D { "
" class E { class F { class G { int y; int z; }; }; }; }; };",
record(hasName("C"), forEachDescendant(record(
forEachDescendant(field().bind("f"))))),
new VerifyIdIsBoundToDecl<FieldDecl>("f", 8)));
}
TEST(IsTemplateInstantiation, MatchesImplicitClassTemplateInstantiation) {
// Make sure that we can both match the class by name (::X) and by the type
// the template was instantiated with (via a field).
EXPECT_TRUE(matches(
"template <typename T> class X {}; class A {}; X<A> x;",
record(hasName("::X"), isTemplateInstantiation())));
EXPECT_TRUE(matches(
"template <typename T> class X { T t; }; class A {}; X<A> x;",
record(isTemplateInstantiation(), hasDescendant(
field(hasType(record(hasName("A"))))))));
}
TEST(IsTemplateInstantiation, MatchesImplicitFunctionTemplateInstantiation) {
EXPECT_TRUE(matches(
"template <typename T> void f(T t) {} class A {}; void g() { f(A()); }",
function(hasParameter(0, hasType(record(hasName("A")))),
isTemplateInstantiation())));
}
TEST(IsTemplateInstantiation, MatchesExplicitClassTemplateInstantiation) {
EXPECT_TRUE(matches(
"template <typename T> class X { T t; }; class A {};"
"template class X<A>;",
record(isTemplateInstantiation(), hasDescendant(
field(hasType(record(hasName("A"))))))));
}
TEST(IsTemplateInstantiation,
MatchesInstantiationOfPartiallySpecializedClassTemplate) {
EXPECT_TRUE(matches(
"template <typename T> class X {};"
"template <typename T> class X<T*> {}; class A {}; X<A*> x;",
record(hasName("::X"), isTemplateInstantiation())));
}
TEST(IsTemplateInstantiation,
MatchesInstantiationOfClassTemplateNestedInNonTemplate) {
EXPECT_TRUE(matches(
"class A {};"
"class X {"
" template <typename U> class Y { U u; };"
" Y<A> y;"
"};",
record(hasName("::X::Y"), isTemplateInstantiation())));
}
TEST(IsTemplateInstantiation, DoesNotMatchInstantiationsInsideOfInstantiation) {
// FIXME: Figure out whether this makes sense. It doesn't affect the
// normal use case as long as the uppermost instantiation always is marked
// as template instantiation, but it might be confusing as a predicate.
EXPECT_TRUE(matches(
"class A {};"
"template <typename T> class X {"
" template <typename U> class Y { U u; };"
" Y<T> y;"
"}; X<A> x;",
record(hasName("::X<A>::Y"), unless(isTemplateInstantiation()))));
}
TEST(IsTemplateInstantiation, DoesNotMatchExplicitClassTemplateSpecialization) {
EXPECT_TRUE(notMatches(
"template <typename T> class X {}; class A {};"
"template <> class X<A> {}; X<A> x;",
record(hasName("::X"), isTemplateInstantiation())));
}
TEST(IsTemplateInstantiation, DoesNotMatchNonTemplate) {
EXPECT_TRUE(notMatches(
"class A {}; class Y { A a; };",
record(isTemplateInstantiation())));
}
} // end namespace ast_matchers
} // end namespace clang
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