llvm-project/clang-tools-extra/test/clang-tidy/checkers/modernize-use-using.cpp

// RUN: %check_clang_tidy %s modernize-use-using %t -- -- -I %S/Inputs/modernize-use-using/

typedef int Type;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef' [modernize-use-using]
// CHECK-FIXES: using Type = int;

typedef long LL;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using LL = long;

typedef int Bla;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Bla = int;

typedef Bla Bla2;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Bla2 = Bla;

typedef void (*type)(int, int);
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using type = void (*)(int, int);

typedef void (*type2)();
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using type2 = void (*)();

class Class {
  typedef long long Type;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using Type = long long;
};

typedef void (Class::*MyPtrType)(Bla) const;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using MyPtrType = void (Class::*)(Bla)[[ATTR:( __attribute__\(\(thiscall\)\))?]] const;

class Iterable {
public:
  class Iterator {};
};

template <typename T>
class Test {
  typedef typename T::iterator Iter;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using Iter = typename T::iterator;
};

using balba = long long;

union A {};

typedef void (A::*PtrType)(int, int) const;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using PtrType = void (A::*)(int, int)[[ATTR]] const;

typedef Class some_class;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using some_class = Class;

typedef Class Cclass;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Cclass = Class;

typedef Cclass cclass2;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using cclass2 = Cclass;

class cclass {};

typedef void (cclass::*MyPtrType3)(Bla);
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using MyPtrType3 = void (cclass::*)(Bla)[[ATTR]];

using my_class = int;

typedef Test<my_class *> another;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using another = Test<my_class *>;

typedef int* PInt;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using PInt = int *;

typedef int bla1, bla2, bla3;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:17: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-3]]:23: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using bla1 = int;
// CHECK-FIXES-NEXT: using bla2 = int;
// CHECK-FIXES-NEXT: using bla3 = int;

#define CODE typedef int INT

CODE;
// CHECK-FIXES: #define CODE typedef int INT
// CHECK-FIXES: CODE;

struct Foo;
#define Bar Baz
typedef Foo Bar;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: #define Bar Baz
// CHECK-FIXES: using Baz = Foo;

#define TYPEDEF typedef
TYPEDEF Foo Bak;
// CHECK-FIXES: #define TYPEDEF typedef
// CHECK-FIXES: TYPEDEF Foo Bak;

#define FOO Foo
typedef FOO Bam;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: #define FOO Foo
// CHECK-FIXES: using Bam = Foo;

typedef struct Foo Bap;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Bap = struct Foo;

struct Foo typedef Bap2;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Bap2 = struct Foo;

Foo typedef Bap3;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Bap3 = Foo;

typedef struct Unknown Baq;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Baq = struct Unknown;

struct Unknown2 typedef Baw;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Baw = struct Unknown2;

int typedef Bax;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Bax = int;

typedef struct Q1 { int a; } S1;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S1 = struct Q1 { int a; };
typedef struct { int b; } S2;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S2 = struct { int b; };
struct Q2 { int c; } typedef S3;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S3 = struct Q2 { int c; };
struct { int d; } typedef S4;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S4 = struct { int d; };

namespace my_space {
  class my_cclass {};
  typedef my_cclass FuncType;
// CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using FuncType = my_cclass;
}

#define lol 4
typedef unsigned Map[lol];
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: typedef unsigned Map[lol];

typedef void (*fun_type)();
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using fun_type = void (*)();

namespace template_instantiations {
template <typename T>
class C {
 protected:
  typedef C<T> super;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using super = C<T>;
  virtual void f();

public:
  virtual ~C();
};

class D : public C<D> {
  void f() override { super::f(); }
};
class E : public C<E> {
  void f() override { super::f(); }
};
}

template <typename T1, typename T2>
class TwoArgTemplate {
  typedef TwoArgTemplate<T1, T2> self;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using self = TwoArgTemplate<T1, T2>;
};

template <bool B, typename T>
struct S {};

typedef S<(0 > 0), int> S_t, *S_p;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:28: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S_t = S<(0 > 0), int>;
// CHECK-FIXES-NEXT: using S_p = S_t*;

typedef S<(0 < 0), int> S2_t, *S2_p;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:29: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S2_t = S<(0 < 0), int>;
// CHECK-FIXES-NEXT: using S2_p = S2_t*;

typedef S<(0 > 0 && (3 > 1) && (1 < 1)), int> S3_t;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using S3_t = S<(0 > 0 && (3 > 1) && (1 < 1)), int>;

template <bool B>
struct Q {};

constexpr bool b[1] = {true};

typedef Q<b[0 < 0]> Q_t, *Q_p;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:24: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Q_t = Q<b[0 < 0]>;
// CHECK-FIXES-NEXT: using Q_p = Q_t*;

typedef Q<b[0 < 0]> Q2_t;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Q2_t = Q<b[0 < 0]>;

struct T {
  constexpr T(bool) {}

  static constexpr bool b = true;
};

typedef Q<T{0 < 0}.b> Q3_t, *Q3_p;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:27: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Q3_t = Q<T{0 < 0}.b>;
// CHECK-FIXES-NEXT: using Q3_p = Q3_t*;

typedef Q<T{0 < 0}.b> Q3_t;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Q3_t = Q<T{0 < 0}.b>;

typedef TwoArgTemplate<TwoArgTemplate<int, Q<T{0 < 0}.b> >, S<(0 < 0), Q<b[0 < 0]> > > Nested_t;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Nested_t = TwoArgTemplate<TwoArgTemplate<int, Q<T{0 < 0}.b>>, S<(0 < 0), Q<b[0 < 0]>>>;

template <typename a>
class TemplateKeyword {
  typedef typename a::template b<> d;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using d = typename a::template b<>;

  typedef typename a::template b<>::c d2;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using d2 = typename a::template b<>::c;
};

template <typename... Args>
class Variadic {};

typedef Variadic<Variadic<int, bool, Q<T{0 < 0}.b> >, S<(0 < 0), Variadic<Q<b[0 < 0]> > > > Variadic_t;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Variadic_t = Variadic<Variadic<int, bool, Q<T{0 < 0}.b>>, S<(0 < 0), Variadic<Q<b[0 < 0]>>>>

typedef Variadic<Variadic<int, bool, Q<T{0 < 0}.b> >, S<(0 < 0), Variadic<Q<b[0 < 0]> > > > Variadic_t, *Variadic_p;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:103: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using Variadic_t = Variadic<Variadic<int, bool, Q<T{0 < 0}.b>>, S<(0 < 0), Variadic<Q<b[0 < 0]>>>>;
// CHECK-FIXES-NEXT: using Variadic_p = Variadic_t*;

typedef struct { int a; } R_t, *R_p;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-MESSAGES: :[[@LINE-2]]:30: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using R_t = struct { int a; };
// CHECK-FIXES-NEXT: using R_p = R_t*;

typedef enum { ea1, eb1 } EnumT1;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using EnumT1 = enum { ea1, eb1 };

#include "modernize-use-using.h"

typedef enum { ea2, eb2 } EnumT2_CheckTypedefImpactFromAnotherFile;
// CHECK-MESSAGES: :[[@LINE-1]]:1: warning: use 'using' instead of 'typedef'
// CHECK-FIXES: using EnumT2_CheckTypedefImpactFromAnotherFile = enum { ea2, eb2 };

template <int A>
struct InjectedClassName {
  typedef InjectedClassName b;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using b = InjectedClassName;
};

template <int>
struct InjectedClassNameWithUnnamedArgument {
  typedef InjectedClassNameWithUnnamedArgument b;
  // CHECK-MESSAGES: :[[@LINE-1]]:3: warning: use 'using' instead of 'typedef'
  // CHECK-FIXES: using b = InjectedClassNameWithUnnamedArgument;
};