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llvm-project/clang/unittests/Rename/RenameAliasTest.cpp

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//===-- RenameAliasTest.cpp - unit tests for renaming alias ---------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "ClangRenameTest.h"
namespace clang {
namespace clang_rename {
namespace test {
namespace {
class RenameAliasTest : public ClangRenameTest {
public:
RenameAliasTest() {
AppendToHeader(R"(
#define MACRO(x) x
namespace some_ns {
class A {
public:
void foo() {}
struct Nested {
enum NestedEnum {
E1, E2,
};
};
};
} // namespace some_ns
namespace a {
typedef some_ns::A TA;
using UA = some_ns::A;
} // namespace a
namespace b {
typedef some_ns::A TA;
using UA = some_ns::A;
}
template <typename T> class ptr {};
template <typename T>
using TPtr = ptr<int>;
)");
}
};
INSTANTIATE_TEST_CASE_P(
RenameAliasTests, RenameAliasTest,
testing::ValuesIn(std::vector<Case>({
// basic functions
{"void f(a::TA a1) {}", "void f(b::TB a1) {}", "a::TA", "b::TB"},
{"void f(a::UA a1) {}", "void f(b::UB a1) {}", "a::UA", "b::UB"},
{"void f(a::TA* a1) {}", "void f(b::TB* a1) {}", "a::TA", "b::TB"},
{"void f(a::TA** a1) {}", "void f(b::TB** a1) {}", "a::TA", "b::TB"},
{"a::TA f() { return a::TA(); }", "b::TB f() { return b::TB(); }",
"a::TA", "b::TB"},
{"a::TA f() { return a::UA(); }", "b::TB f() { return a::UA(); }",
"a::TA", "b::TB"},
{"a::TA f() { return a::UA(); }", "a::TA f() { return b::UB(); }",
"a::UA", "b::UB"},
{"void f() { a::TA a; }", "void f() { b::TB a; }", "a::TA", "b::TB"},
{"void f(const a::TA& a1) {}", "void f(const b::TB& a1) {}", "a::TA",
"b::TB"},
{"void f(const a::UA& a1) {}", "void f(const b::UB& a1) {}", "a::UA",
"b::UB"},
{"void f(const a::TA* a1) {}", "void f(const b::TB* a1) {}", "a::TA",
"b::TB"},
{"namespace a { void f(TA a1) {} }",
"namespace a { void f(b::TB a1) {} }", "a::TA", "b::TB"},
{"void f(MACRO(a::TA) a1) {}", "void f(MACRO(b::TB) a1) {}", "a::TA",
"b::TB"},
{"void f(MACRO(a::TA a1)) {}", "void f(MACRO(b::TB a1)) {}", "a::TA",
"b::TB"},
// shorten/add namespace.
{"namespace b { void f(a::UA a1) {} }",
"namespace b {void f(UB a1) {} }", "a::UA", "b::UB"},
{"namespace a { void f(UA a1) {} }",
"namespace a {void f(b::UB a1) {} }", "a::UA", "b::UB"},
// use namespace and typedefs
{"struct S { using T = a::TA; T a_; };",
"struct S { using T = b::TB; T a_; };", "a::TA", "b::TB"},
{"using T = a::TA; T gA;", "using T = b::TB; T gA;", "a::TA", "b::TB"},
{"using T = a::UA; T gA;", "using T = b::UB; T gA;", "a::UA", "b::UB"},
{"typedef a::TA T; T gA;", "typedef b::TB T; T gA;", "a::TA", "b::TB"},
{"typedef a::UA T; T gA;", "typedef b::UB T; T gA;", "a::UA", "b::UB"},
{"typedef MACRO(a::TA) T; T gA;", "typedef MACRO(b::TB) T; T gA;",
"a::TA", "b::TB"},
// types in using shadows.
{"using a::TA; TA gA;", "using b::TB; b::TB gA;", "a::TA", "b::TB"},
{"using a::UA; UA gA;", "using b::UB; b::UB gA;", "a::UA", "b::UB"},
// struct members and other oddities
{"struct S : public a::TA {};", "struct S : public b::TB {};", "a::TA",
"b::TB"},
{"struct S : public a::UA {};", "struct S : public b::UB {};", "a::UA",
"b::UB"},
{"struct F { void f(a::TA a1) {} };",
"struct F { void f(b::TB a1) {} };", "a::TA", "b::TB"},
{"struct F { a::TA a_; };", "struct F { b::TB a_; };", "a::TA",
"b::TB"},
{"struct F { ptr<a::TA> a_; };", "struct F { ptr<b::TB> a_; };",
"a::TA", "b::TB"},
{"struct F { ptr<a::UA> a_; };", "struct F { ptr<b::UB> a_; };",
"a::UA", "b::UB"},
// types in nested name specifiers
{"void f() { a::TA::Nested ne; }", "void f() { b::TB::Nested ne; }",
"a::TA", "b::TB"},
{"void f() { a::UA::Nested ne; }", "void f() { b::UB::Nested ne; }",
"a::UA", "b::UB"},
{"void f() { a::TA::Nested::NestedEnum e; }",
"void f() { b::TB::Nested::NestedEnum e; }", "a::TA", "b::TB"},
{"void f() { auto e = a::TA::Nested::NestedEnum::E1; }",
"void f() { auto e = b::TB::Nested::NestedEnum::E1; }", "a::TA",
"b::TB"},
{"void f() { auto e = a::TA::Nested::E1; }",
"void f() { auto e = b::TB::Nested::E1; }", "a::TA", "b::TB"},
// templates
{"template <typename T> struct Foo { T t; }; void f() { Foo<a::TA> "
"foo; }",
"template <typename T> struct Foo { T t; }; void f() { Foo<b::TB> "
"foo; }",
"a::TA", "b::TB"},
{"template <typename T> struct Foo { a::TA a; };",
"template <typename T> struct Foo { b::TB a; };", "a::TA", "b::TB"},
{"template <typename T> void f(T t) {} void g() { f<a::TA>(a::TA()); }",
"template <typename T> void f(T t) {} void g() { f<b::TB>(b::TB()); }",
"a::TA", "b::TB"},
{"template <typename T> void f(T t) {} void g() { f<a::UA>(a::UA()); }",
"template <typename T> void f(T t) {} void g() { f<b::UB>(b::UB()); }",
"a::UA", "b::UB"},
{"template <typename T> int f() { return 1; } template <> int "
"f<a::TA>() { return 2; } int g() { return f<a::TA>(); }",
"template <typename T> int f() { return 1; } template <> int "
"f<b::TB>() { return 2; } int g() { return f<b::TB>(); }",
"a::TA", "b::TB"},
{"struct Foo { template <typename T> T foo(); }; void g() { Foo f; "
"auto a = f.template foo<a::TA>(); }",
"struct Foo { template <typename T> T foo(); }; void g() { Foo f; "
"auto a = f.template foo<b::TB>(); }",
"a::TA", "b::TB"},
{"struct Foo { template <typename T> T foo(); }; void g() { Foo f; "
"auto a = f.template foo<a::UA>(); }",
"struct Foo { template <typename T> T foo(); }; void g() { Foo f; "
"auto a = f.template foo<b::UB>(); }",
"a::UA", "b::UB"},
// The following two templates are distilled from regressions found in
// unique_ptr<> and type_traits.h
{"template <typename T> struct outer { typedef T type; type Baz(); }; "
"outer<a::TA> g_A;",
"template <typename T> struct outer { typedef T type; type Baz(); }; "
"outer<b::TB> g_A;",
"a::TA", "b::TB"},
{"template <typename T> struct nested { typedef T type; }; template "
"<typename T> struct outer { typename nested<T>::type Foo(); }; "
"outer<a::TA> g_A;",
"template <typename T> struct nested { typedef T type; }; template "
"<typename T> struct outer { typename nested<T>::type Foo(); }; "
"outer<b::TB> g_A;",
"a::TA", "b::TB"},
// macros
{"#define FOO(T, t) T t\nvoid f() { FOO(a::TA, a1); FOO(a::TA, a2); }",
"#define FOO(T, t) T t\nvoid f() { FOO(b::TB, a1); FOO(b::TB, a2); }",
"a::TA", "b::TB"},
{"#define FOO(n) a::TA n\nvoid f() { FOO(a1); FOO(a2); }",
"#define FOO(n) b::TB n\nvoid f() { FOO(a1); FOO(a2); }", "a::TA",
"b::TB"},
{"#define FOO(n) a::UA n\nvoid f() { FOO(a1); FOO(a2); }",
"#define FOO(n) b::UB n\nvoid f() { FOO(a1); FOO(a2); }", "a::UA",
"b::UB"},
// Pointer to member functions
{"auto gA = &a::TA::foo;", "auto gA = &b::TB::foo;", "a::TA", "b::TB"},
{"using a::TA; auto gA = &TA::foo;",
"using b::TB; auto gA = &b::TB::foo;", "a::TA", "b::TB"},
{"typedef a::TA T; auto gA = &T::foo;",
"typedef b::TB T; auto gA = &T::foo;", "a::TA", "b::TB"},
{"auto gA = &MACRO(a::TA)::foo;", "auto gA = &MACRO(b::TB)::foo;",
"a::TA", "b::TB"},
// templated using alias.
{"void f(TPtr<int> p) {}", "void f(NewTPtr<int> p) {}", "TPtr",
"NewTPtr"},
{"void f(::TPtr<int> p) {}", "void f(::NewTPtr<int> p) {}", "TPtr",
"NewTPtr"},
})), );
TEST_P(RenameAliasTest, RenameAlias) {
auto Param = GetParam();
assert(!Param.OldName.empty());
assert(!Param.NewName.empty());
std::string Actual =
runClangRenameOnCode(Param.Before, Param.OldName, Param.NewName);
CompareSnippets(Param.After, Actual);
}
TEST_F(RenameAliasTest, RenameTypedefDefinitions) {
std::string Before = R"(
class X {};
typedef X TOld;
)";
std::string Expected = R"(
class X {};
typedef X TNew;
)";
std::string After = runClangRenameOnCode(Before, "TOld", "TNew");
CompareSnippets(Expected, After);
}
TEST_F(RenameAliasTest, RenameUsingAliasDefinitions) {
std::string Before = R"(
class X {};
using UOld = X;
)";
std::string Expected = R"(
class X {};
using UNew = X;
)";
std::string After = runClangRenameOnCode(Before, "UOld", "UNew");
CompareSnippets(Expected, After);
}
TEST_F(RenameAliasTest, RenameTemplatedAliasDefinitions) {
std::string Before = R"(
template <typename T>
class X { T t; };
template <typename T>
using Old = X<T>;
)";
std::string Expected = R"(
template <typename T>
class X { T t; };
template <typename T>
using New = X<T>;
)";
std::string After = runClangRenameOnCode(Before, "Old", "New");
CompareSnippets(Expected, After);
}
TEST_F(RenameAliasTest, RenameAliasesInNamespaces) {
std::string Before = R"(
namespace x { class X {}; }
namespace ns {
using UOld = x::X;
}
)";
std::string Expected = R"(
namespace x { class X {}; }
namespace ns {
using UNew = x::X;
}
)";
std::string After = runClangRenameOnCode(Before, "ns::UOld", "ns::UNew");
CompareSnippets(Expected, After);
}
TEST_F(RenameAliasTest, AliasesInMacros) {
std::string Before = R"(
namespace x { class Old {}; }
namespace ns {
#define REF(alias) alias alias_var;
#define ALIAS(old) \
using old##Alias = x::old; \
REF(old##Alias);
ALIAS(Old);
OldAlias old_alias;
}
)";
std::string Expected = R"(
namespace x { class Old {}; }
namespace ns {
#define REF(alias) alias alias_var;
#define ALIAS(old) \
using old##Alias = x::old; \
REF(old##Alias);
ALIAS(Old);
NewAlias old_alias;
}
)";
std::string After =
runClangRenameOnCode(Before, "ns::OldAlias", "ns::NewAlias");
CompareSnippets(Expected, After);
}
} // anonymous namespace
} // namespace test
} // namespace clang_rename
} // namesdpace clang
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