348 lines
13 KiB
C++
348 lines
13 KiB
C++
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//===- unittest/ASTMatchers/Dynamic/RegistryTest.cpp - Registry unit tests -===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===-----------------------------------------------------------------------===//
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#include <vector>
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#include "../ASTMatchersTest.h"
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#include "clang/ASTMatchers/Dynamic/Registry.h"
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#include "gtest/gtest.h"
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namespace clang {
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namespace ast_matchers {
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namespace dynamic {
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namespace {
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using ast_matchers::internal::Matcher;
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class RegistryTest : public ::testing::Test {
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public:
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std::vector<ParserValue> Args() { return std::vector<ParserValue>(); }
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std::vector<ParserValue> Args(const VariantValue &Arg1) {
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std::vector<ParserValue> Out(1);
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Out[0].Value = Arg1;
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return Out;
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}
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std::vector<ParserValue> Args(const VariantValue &Arg1,
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const VariantValue &Arg2) {
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std::vector<ParserValue> Out(2);
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Out[0].Value = Arg1;
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Out[1].Value = Arg2;
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return Out;
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}
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VariantMatcher constructMatcher(StringRef MatcherName,
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Diagnostics *Error = NULL) {
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Diagnostics DummyError;
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if (!Error) Error = &DummyError;
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const VariantMatcher Out =
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Registry::constructMatcher(MatcherName, SourceRange(), Args(), Error);
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EXPECT_EQ("", DummyError.toStringFull());
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return Out;
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}
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VariantMatcher constructMatcher(StringRef MatcherName,
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const VariantValue &Arg1,
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Diagnostics *Error = NULL) {
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Diagnostics DummyError;
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if (!Error) Error = &DummyError;
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const VariantMatcher Out = Registry::constructMatcher(
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MatcherName, SourceRange(), Args(Arg1), Error);
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EXPECT_EQ("", DummyError.toStringFull());
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return Out;
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}
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VariantMatcher constructMatcher(StringRef MatcherName,
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const VariantValue &Arg1,
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const VariantValue &Arg2,
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Diagnostics *Error = NULL) {
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Diagnostics DummyError;
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if (!Error) Error = &DummyError;
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const VariantMatcher Out = Registry::constructMatcher(
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MatcherName, SourceRange(), Args(Arg1, Arg2), Error);
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EXPECT_EQ("", DummyError.toStringFull());
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return Out;
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}
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};
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TEST_F(RegistryTest, CanConstructNoArgs) {
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Matcher<Stmt> IsArrowValue = constructMatcher(
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"memberExpr", constructMatcher("isArrow")).getTypedMatcher<Stmt>();
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Matcher<Stmt> BoolValue =
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constructMatcher("boolLiteral").getTypedMatcher<Stmt>();
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const std::string ClassSnippet = "struct Foo { int x; };\n"
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"Foo *foo = new Foo;\n"
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"int i = foo->x;\n";
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const std::string BoolSnippet = "bool Foo = true;\n";
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EXPECT_TRUE(matches(ClassSnippet, IsArrowValue));
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EXPECT_TRUE(matches(BoolSnippet, BoolValue));
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EXPECT_FALSE(matches(ClassSnippet, BoolValue));
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EXPECT_FALSE(matches(BoolSnippet, IsArrowValue));
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}
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TEST_F(RegistryTest, ConstructWithSimpleArgs) {
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Matcher<Decl> Value = constructMatcher(
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"namedDecl", constructMatcher("hasName", std::string("X")))
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.getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("class X {};", Value));
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EXPECT_FALSE(matches("int x;", Value));
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Value = functionDecl(constructMatcher("parameterCountIs", 2)
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.getTypedMatcher<FunctionDecl>());
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EXPECT_TRUE(matches("void foo(int,int);", Value));
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EXPECT_FALSE(matches("void foo(int);", Value));
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}
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TEST_F(RegistryTest, ConstructWithMatcherArgs) {
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Matcher<Decl> HasInitializerSimple = constructMatcher(
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"varDecl", constructMatcher("hasInitializer", constructMatcher("stmt")))
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.getTypedMatcher<Decl>();
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Matcher<Decl> HasInitializerComplex = constructMatcher(
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"varDecl",
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constructMatcher("hasInitializer", constructMatcher("callExpr")))
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.getTypedMatcher<Decl>();
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std::string code = "int i;";
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EXPECT_FALSE(matches(code, HasInitializerSimple));
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EXPECT_FALSE(matches(code, HasInitializerComplex));
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code = "int i = 1;";
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EXPECT_TRUE(matches(code, HasInitializerSimple));
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EXPECT_FALSE(matches(code, HasInitializerComplex));
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code = "int y(); int i = y();";
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EXPECT_TRUE(matches(code, HasInitializerSimple));
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EXPECT_TRUE(matches(code, HasInitializerComplex));
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Matcher<Decl> HasParameter =
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functionDecl(constructMatcher(
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"hasParameter", 1, constructMatcher("hasName", std::string("x")))
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.getTypedMatcher<FunctionDecl>());
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EXPECT_TRUE(matches("void f(int a, int x);", HasParameter));
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EXPECT_FALSE(matches("void f(int x, int a);", HasParameter));
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}
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TEST_F(RegistryTest, OverloadedMatchers) {
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Matcher<Stmt> CallExpr0 = constructMatcher(
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"callExpr",
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constructMatcher("callee", constructMatcher("memberExpr",
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constructMatcher("isArrow"))))
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.getTypedMatcher<Stmt>();
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Matcher<Stmt> CallExpr1 = constructMatcher(
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"callExpr",
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constructMatcher(
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"callee",
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constructMatcher("methodDecl",
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constructMatcher("hasName", std::string("x")))))
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.getTypedMatcher<Stmt>();
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std::string Code = "class Y { public: void x(); }; void z() { Y y; y.x(); }";
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EXPECT_FALSE(matches(Code, CallExpr0));
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EXPECT_TRUE(matches(Code, CallExpr1));
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Code = "class Z { public: void z() { this->z(); } };";
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EXPECT_TRUE(matches(Code, CallExpr0));
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EXPECT_FALSE(matches(Code, CallExpr1));
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}
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TEST_F(RegistryTest, PolymorphicMatchers) {
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const VariantMatcher IsDefinition = constructMatcher("isDefinition");
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Matcher<Decl> Var =
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constructMatcher("varDecl", IsDefinition).getTypedMatcher<Decl>();
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Matcher<Decl> Class =
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constructMatcher("recordDecl", IsDefinition).getTypedMatcher<Decl>();
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Matcher<Decl> Func =
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constructMatcher("functionDecl", IsDefinition).getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("int a;", Var));
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EXPECT_FALSE(matches("extern int a;", Var));
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EXPECT_TRUE(matches("class A {};", Class));
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EXPECT_FALSE(matches("class A;", Class));
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EXPECT_TRUE(matches("void f(){};", Func));
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EXPECT_FALSE(matches("void f();", Func));
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Matcher<Decl> Anything = constructMatcher("anything").getTypedMatcher<Decl>();
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Matcher<Decl> RecordDecl = constructMatcher(
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"recordDecl", constructMatcher("hasName", std::string("Foo")),
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VariantMatcher::SingleMatcher(Anything)).getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("int Foo;", Anything));
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EXPECT_TRUE(matches("class Foo {};", Anything));
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EXPECT_TRUE(matches("void Foo(){};", Anything));
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EXPECT_FALSE(matches("int Foo;", RecordDecl));
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EXPECT_TRUE(matches("class Foo {};", RecordDecl));
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EXPECT_FALSE(matches("void Foo(){};", RecordDecl));
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Matcher<Stmt> ConstructExpr = constructMatcher(
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"constructExpr",
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constructMatcher(
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"hasDeclaration",
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constructMatcher(
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"methodDecl",
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constructMatcher(
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"ofClass", constructMatcher("hasName", std::string("Foo"))))))
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.getTypedMatcher<Stmt>();
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EXPECT_FALSE(matches("class Foo { public: Foo(); };", ConstructExpr));
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EXPECT_TRUE(
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matches("class Foo { public: Foo(); }; Foo foo = Foo();", ConstructExpr));
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}
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TEST_F(RegistryTest, TemplateArgument) {
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Matcher<Decl> HasTemplateArgument = constructMatcher(
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"classTemplateSpecializationDecl",
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constructMatcher(
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"hasAnyTemplateArgument",
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constructMatcher("refersToType",
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constructMatcher("asString", std::string("int")))))
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.getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("template<typename T> class A {}; A<int> a;",
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HasTemplateArgument));
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EXPECT_FALSE(matches("template<typename T> class A {}; A<char> a;",
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HasTemplateArgument));
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}
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TEST_F(RegistryTest, TypeTraversal) {
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Matcher<Type> M = constructMatcher(
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"pointerType",
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constructMatcher("pointee", constructMatcher("isConstQualified"),
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constructMatcher("isInteger"))).getTypedMatcher<Type>();
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EXPECT_FALSE(matches("int *a;", M));
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EXPECT_TRUE(matches("int const *b;", M));
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M = constructMatcher(
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"arrayType",
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constructMatcher("hasElementType", constructMatcher("builtinType")))
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.getTypedMatcher<Type>();
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EXPECT_FALSE(matches("struct A{}; A a[7];;", M));
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EXPECT_TRUE(matches("int b[7];", M));
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}
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TEST_F(RegistryTest, CXXCtorInitializer) {
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Matcher<Decl> CtorDecl = constructMatcher(
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"constructorDecl",
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constructMatcher(
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"hasAnyConstructorInitializer",
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constructMatcher("forField",
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constructMatcher("hasName", std::string("foo")))))
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.getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("struct Foo { Foo() : foo(1) {} int foo; };", CtorDecl));
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EXPECT_FALSE(matches("struct Foo { Foo() {} int foo; };", CtorDecl));
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EXPECT_FALSE(matches("struct Foo { Foo() : bar(1) {} int bar; };", CtorDecl));
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}
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TEST_F(RegistryTest, Adaptative) {
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Matcher<Decl> D = constructMatcher(
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"recordDecl",
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constructMatcher(
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"has",
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constructMatcher("recordDecl",
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constructMatcher("hasName", std::string("X")))))
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.getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("class X {};", D));
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EXPECT_TRUE(matches("class Y { class X {}; };", D));
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EXPECT_FALSE(matches("class Y { class Z {}; };", D));
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Matcher<Stmt> S = constructMatcher(
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"forStmt",
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constructMatcher(
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"hasDescendant",
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constructMatcher("varDecl",
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constructMatcher("hasName", std::string("X")))))
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.getTypedMatcher<Stmt>();
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EXPECT_TRUE(matches("void foo() { for(int X;;); }", S));
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EXPECT_TRUE(matches("void foo() { for(;;) { int X; } }", S));
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EXPECT_FALSE(matches("void foo() { for(;;); }", S));
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EXPECT_FALSE(matches("void foo() { if (int X = 0){} }", S));
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S = constructMatcher(
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"compoundStmt", constructMatcher("hasParent", constructMatcher("ifStmt")))
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.getTypedMatcher<Stmt>();
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EXPECT_TRUE(matches("void foo() { if (true) { int x = 42; } }", S));
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EXPECT_FALSE(matches("void foo() { if (true) return; }", S));
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}
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TEST_F(RegistryTest, VariadicOp) {
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Matcher<Decl> D = constructMatcher(
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"anyOf",
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constructMatcher("recordDecl",
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constructMatcher("hasName", std::string("Foo"))),
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constructMatcher("namedDecl",
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constructMatcher("hasName", std::string("foo"))))
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.getTypedMatcher<Decl>();
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EXPECT_TRUE(matches("void foo(){}", D));
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EXPECT_TRUE(matches("struct Foo{};", D));
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EXPECT_FALSE(matches("int i = 0;", D));
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D = constructMatcher(
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"allOf", constructMatcher("recordDecl"),
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constructMatcher(
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"namedDecl",
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constructMatcher("anyOf",
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constructMatcher("hasName", std::string("Foo")),
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constructMatcher("hasName", std::string("Bar")))))
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.getTypedMatcher<Decl>();
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EXPECT_FALSE(matches("void foo(){}", D));
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EXPECT_TRUE(matches("struct Foo{};", D));
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EXPECT_FALSE(matches("int i = 0;", D));
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EXPECT_TRUE(matches("class Bar{};", D));
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EXPECT_FALSE(matches("class OtherBar{};", D));
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}
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TEST_F(RegistryTest, Errors) {
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// Incorrect argument count.
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OwningPtr<Diagnostics> Error(new Diagnostics());
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EXPECT_TRUE(constructMatcher("hasInitializer", Error.get()).isNull());
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EXPECT_EQ("Incorrect argument count. (Expected = 1) != (Actual = 0)",
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Error->toString());
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Error.reset(new Diagnostics());
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EXPECT_TRUE(constructMatcher("isArrow", std::string(), Error.get()).isNull());
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EXPECT_EQ("Incorrect argument count. (Expected = 0) != (Actual = 1)",
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Error->toString());
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// Bad argument type
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Error.reset(new Diagnostics());
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EXPECT_TRUE(constructMatcher("ofClass", std::string(), Error.get()).isNull());
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EXPECT_EQ("Incorrect type for arg 1. (Expected = Matcher<CXXRecordDecl>) != "
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"(Actual = String)",
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Error->toString());
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Error.reset(new Diagnostics());
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EXPECT_TRUE(constructMatcher("recordDecl", constructMatcher("recordDecl"),
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constructMatcher("parameterCountIs", 3),
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Error.get()).isNull());
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EXPECT_EQ("Incorrect type for arg 2. (Expected = Matcher<CXXRecordDecl>) != "
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"(Actual = Matcher<FunctionDecl>)",
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Error->toString());
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// Bad argument type with variadic.
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Error.reset(new Diagnostics());
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EXPECT_TRUE(constructMatcher("anyOf", std::string(), Error.get()).isNull());
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EXPECT_EQ(
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"Incorrect type for arg 1. (Expected = Matcher<>) != (Actual = String)",
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Error->toString());
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Error.reset(new Diagnostics());
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EXPECT_TRUE(constructMatcher(
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"recordDecl",
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constructMatcher("allOf",
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constructMatcher("isDerivedFrom", std::string("FOO")),
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constructMatcher("isArrow")),
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Error.get()).isNull());
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EXPECT_EQ("Incorrect type for arg 1. "
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"(Expected = Matcher<CXXRecordDecl>) != "
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"(Actual = Matcher<CXXRecordDecl>&Matcher<MemberExpr>)",
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Error->toString());
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}
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} // end anonymous namespace
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} // end namespace dynamic
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} // end namespace ast_matchers
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} // end namespace clang
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