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//===- unittest/ASTMatchers/Dynamic/RegistryTest.cpp - Registry unit tests -===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===-----------------------------------------------------------------------===//
#include <vector>
#include "../ASTMatchersTest.h"
#include "clang/ASTMatchers/Dynamic/Registry.h"
#include "gtest/gtest.h"
namespace clang {
namespace ast_matchers {
namespace dynamic {
namespace {
using ast_matchers::internal::Matcher;
class RegistryTest : public ::testing::Test {
public:
std::vector<ParserValue> Args() { return std::vector<ParserValue>(); }
std::vector<ParserValue> Args(const VariantValue &Arg1) {
std::vector<ParserValue> Out(1);
Out[0].Value = Arg1;
return Out;
}
std::vector<ParserValue> Args(const VariantValue &Arg1,
const VariantValue &Arg2) {
std::vector<ParserValue> Out(2);
Out[0].Value = Arg1;
Out[1].Value = Arg2;
return Out;
}
template <class T>
Matcher<T> constructMatcher(StringRef MatcherName, Diagnostics *Error) {
return Registry::constructMatcher(MatcherName, SourceRange(), Args(), Error)
.getTypedMatcher<T>();
}
template <class T>
Matcher<T> constructMatcher(StringRef MatcherName, const VariantValue &Arg1,
Diagnostics *Error) {
return Registry::constructMatcher(MatcherName, SourceRange(), Args(Arg1),
Error).getTypedMatcher<T>();
}
template <class T>
Matcher<T> constructMatcher(StringRef MatcherName, const VariantValue &Arg1,
const VariantValue &Arg2, Diagnostics *Error) {
return Registry::constructMatcher(MatcherName, SourceRange(),
Args(Arg1, Arg2), Error)
.getTypedMatcher<T>();
}
};
TEST_F(RegistryTest, CanConstructNoArgs) {
Matcher<Stmt> IsArrowValue = constructMatcher<Stmt>(
"memberExpr", constructMatcher<MemberExpr>("isArrow", NULL), NULL);
Matcher<Stmt> BoolValue = constructMatcher<Stmt>("boolLiteral", NULL);
const std::string ClassSnippet = "struct Foo { int x; };\n"
"Foo *foo = new Foo;\n"
"int i = foo->x;\n";
const std::string BoolSnippet = "bool Foo = true;\n";
EXPECT_TRUE(matches(ClassSnippet, IsArrowValue));
EXPECT_TRUE(matches(BoolSnippet, BoolValue));
EXPECT_FALSE(matches(ClassSnippet, BoolValue));
EXPECT_FALSE(matches(BoolSnippet, IsArrowValue));
}
TEST_F(RegistryTest, ConstructWithSimpleArgs) {
Matcher<Decl> Value = constructMatcher<Decl>(
"namedDecl",
constructMatcher<NamedDecl>("hasName", std::string("X"), NULL), NULL);
EXPECT_TRUE(matches("class X {};", Value));
EXPECT_FALSE(matches("int x;", Value));
Value =
functionDecl(constructMatcher<FunctionDecl>("parameterCountIs", 2, NULL));
EXPECT_TRUE(matches("void foo(int,int);", Value));
EXPECT_FALSE(matches("void foo(int);", Value));
}
TEST_F(RegistryTest, ConstructWithMatcherArgs) {
Matcher<Decl> HasInitializerSimple = constructMatcher<Decl>(
"varDecl", constructMatcher<VarDecl>("hasInitializer", stmt(), NULL),
NULL);
Matcher<Decl> HasInitializerComplex = constructMatcher<Decl>(
"varDecl", constructMatcher<VarDecl>("hasInitializer", callExpr(), NULL),
NULL);
std::string code = "int i;";
EXPECT_FALSE(matches(code, HasInitializerSimple));
EXPECT_FALSE(matches(code, HasInitializerComplex));
code = "int i = 1;";
EXPECT_TRUE(matches(code, HasInitializerSimple));
EXPECT_FALSE(matches(code, HasInitializerComplex));
code = "int y(); int i = y();";
EXPECT_TRUE(matches(code, HasInitializerSimple));
EXPECT_TRUE(matches(code, HasInitializerComplex));
Matcher<Decl> HasParameter = functionDecl(
constructMatcher<FunctionDecl>("hasParameter", 1, hasName("x"), NULL));
EXPECT_TRUE(matches("void f(int a, int x);", HasParameter));
EXPECT_FALSE(matches("void f(int x, int a);", HasParameter));
}
TEST_F(RegistryTest, PolymorphicMatchers) {
const MatcherList IsDefinition =
Registry::constructMatcher("isDefinition", SourceRange(), Args(), NULL);
Matcher<Decl> Var = constructMatcher<Decl>("varDecl", IsDefinition, NULL);
Matcher<Decl> Class =
constructMatcher<Decl>("recordDecl", IsDefinition, NULL);
Matcher<Decl> Func =
constructMatcher<Decl>("functionDecl", IsDefinition, NULL);
EXPECT_TRUE(matches("int a;", Var));
EXPECT_FALSE(matches("extern int a;", Var));
EXPECT_TRUE(matches("class A {};", Class));
EXPECT_FALSE(matches("class A;", Class));
EXPECT_TRUE(matches("void f(){};", Func));
EXPECT_FALSE(matches("void f();", Func));
Matcher<Decl> Anything = constructMatcher<Decl>("anything", NULL);
Matcher<Decl> RecordDecl =
constructMatcher<Decl>("recordDecl", Anything, NULL);
EXPECT_TRUE(matches("int a;", Anything));
EXPECT_TRUE(matches("class A {};", Anything));
EXPECT_TRUE(matches("void f(){};", Anything));
// FIXME: A couple of tests have been suppressed.
// I know it'd be bad with _MSC_VER here, though.
#if !defined(_MSC_VER)
EXPECT_FALSE(matches("int a;", RecordDecl));
#endif
EXPECT_TRUE(matches("class A {};", RecordDecl));
#if !defined(_MSC_VER)
EXPECT_FALSE(matches("void f(){};", RecordDecl));
#endif
}
TEST_F(RegistryTest, Errors) {
// Incorrect argument count.
OwningPtr<Diagnostics> Error(new Diagnostics());
EXPECT_TRUE(Registry::constructMatcher("hasInitializer", SourceRange(),
Args(), Error.get()).empty());
EXPECT_EQ("Incorrect argument count. (Expected = 1) != (Actual = 0)",
Error->ToString());
Error.reset(new Diagnostics());
EXPECT_TRUE(Registry::constructMatcher(
"isArrow", SourceRange(), Args(std::string()), Error.get()).empty());
EXPECT_EQ("Incorrect argument count. (Expected = 0) != (Actual = 1)",
Error->ToString());
// Bad argument type
Error.reset(new Diagnostics());
EXPECT_TRUE(Registry::constructMatcher(
"ofClass", SourceRange(), Args(std::string()), Error.get()).empty());
EXPECT_EQ("Incorrect type for arg 1. (Expected = Matcher<CXXRecordDecl>) != "
"(Actual = String)",
Error->ToString());
Error.reset(new Diagnostics());
EXPECT_TRUE(Registry::constructMatcher(
"recordDecl", SourceRange(), Args(recordDecl(), parameterCountIs(3)),
Error.get()).empty());
EXPECT_EQ("Incorrect type for arg 2. (Expected = Matcher<CXXRecordDecl>) != "
"(Actual = Matcher<FunctionDecl>)",
Error->ToString());
}
} // end anonymous namespace
} // end namespace dynamic
} // end namespace ast_matchers
} // end namespace clang
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