ceph/src/boost/libs/type_traits/test/has_binary_operators.hpp

   1 //  (C) Copyright Frederic Bron 2009-2011.
   2 //  Use, modification and distribution are subject to the
   3 //  Boost Software License, Version 1.0. (See accompanying file
   4 //  LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #ifndef TT_HAS_BINARY_OPERATORS_HPP
   7 #define TT_HAS_BINARY_OPERATORS_HPP
   8
   9 #if defined(__GNUC__) && (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__ > 40900)
  10 #pragma GCC diagnostic push
  11 #pragma GCC diagnostic ignored "-Wunused-function"
  12 #endif
  13
  14
  15 // test with one template parameter
  16 #define TEST_T(TYPE,RESULT) BOOST_CHECK_INTEGRAL_CONSTANT((::boost::BOOST_TT_TRAIT_NAME<TYPE>::value), RESULT)
  17 // test with one template parameter plus return value
  18 #define TEST_TR(TYPE,RET,RESULT) BOOST_CHECK_INTEGRAL_CONSTANT((::boost::BOOST_TT_TRAIT_NAME<TYPE,TYPE,RET>::value), RESULT)
  19 // test with two template parameters
  20 #define TEST_TT(TYPE1,TYPE2,RESULT) BOOST_CHECK_INTEGRAL_CONSTANT((::boost::BOOST_TT_TRAIT_NAME<TYPE1,TYPE2>::value), RESULT)
  21 // test with two template parameters plus return value
  22 #define TEST_TTR(TYPE1,TYPE2,RET,RESULT) BOOST_CHECK_INTEGRAL_CONSTANT((::boost::BOOST_TT_TRAIT_NAME<TYPE1,TYPE2,RET>::value), RESULT)
  23
  24 namespace {
  25
  26 struct without { };
  27
  28 struct ret { };
  29
  30 struct internal { ret operator BOOST_TT_TRAIT_OP (const internal&) const; };
  31
  32 struct external { };
  33 inline ret operator BOOST_TT_TRAIT_OP (const external&, const external&) {  return ret();  }
  34
  35 struct comma1_ret { };
  36 struct ret_with_comma1 { comma1_ret operator,(int); };
  37
  38 struct internal_comma1 { ret_with_comma1 operator BOOST_TT_TRAIT_OP (const internal_comma1&) const; };
  39
  40 struct external_comma1 { };
  41 ret_with_comma1 operator BOOST_TT_TRAIT_OP (const external_comma1&, const external_comma1&) { return ret_with_comma1(); }
  42
  43 struct ret_with_comma2 { void operator,(int); };
  44
  45 struct internal_comma2 { ret_with_comma2 operator BOOST_TT_TRAIT_OP (const internal_comma2&) const; };
  46
  47 struct external_comma2 { };
  48 ret_with_comma2 operator BOOST_TT_TRAIT_OP (const external_comma2&, const external_comma2&){ return ret_with_comma2(); }
  49
  50 struct returns_int { int operator BOOST_TT_TRAIT_OP (const returns_int&); };
  51
  52 struct returns_void { void operator BOOST_TT_TRAIT_OP (const returns_void&); };
  53
  54 struct returns_void_star { void *operator BOOST_TT_TRAIT_OP (const returns_void_star&); };
  55
  56 struct returns_double { double operator BOOST_TT_TRAIT_OP (const returns_double&); };
  57
  58 struct ret1 { };
  59 struct convertible_to_ret1 { operator ret1 () const; };
  60 struct returns_convertible_to_ret1 { convertible_to_ret1 operator BOOST_TT_TRAIT_OP (const returns_convertible_to_ret1&); };
  61
  62 struct convertible_to_ret2 { };
  63 struct ret2 { ret2(const convertible_to_ret2); };
  64 struct returns_convertible_to_ret2 { convertible_to_ret2 operator BOOST_TT_TRAIT_OP (const returns_convertible_to_ret2&); };
  65
  66 class Base1 { };
  67 class Derived1 : public Base1 { };
  68
  69 bool operator BOOST_TT_TRAIT_OP (const Base1&, const Base1&) { return true; }
  70
  71 class Base2 { };
  72 struct Derived2 : public Base2 {
  73    Derived2(int); // to check if it works with a class that is not default constructible
  74 };
  75
  76 bool operator BOOST_TT_TRAIT_OP (const Derived2&, const Derived2&) { return true; }
  77
  78 struct tag { };
  79
  80 struct A { };
  81 struct B : public A { };
  82
  83 struct C { };
  84 struct D { };
  85 inline bool operator BOOST_TT_TRAIT_OP (const C&, void*) { return true; }
  86 inline bool operator BOOST_TT_TRAIT_OP (void*, const D&) { return true; }
  87 inline bool operator BOOST_TT_TRAIT_OP (const C&, const D&) { return true; }
  88
  89 struct private_op { private: void operator BOOST_TT_TRAIT_OP (const private_op&) {} };
  90
  91 struct ambiguous_A
  92 {
  93 };
  94 inline bool operator BOOST_TT_TRAIT_OP (const ambiguous_A&, const ambiguous_A&) { return true; }
  95 struct ambiguous_B { operator ambiguous_A()const { return ambiguous_A(); } };
  96
  97 //class internal_private { ret operator BOOST_TT_TRAIT_OP (const internal_private&) const; };
  98
  99 void common() {
 100    TEST_T(void, false);
 101    TEST_TT(void, void, false);
 102    TEST_TTR(void, void, void, false);
 103    TEST_TTR(void, void, int, false);
 104
 105    TEST_T(without, false);
 106    TEST_T(internal, true);
 107    TEST_T(external, true);
 108    TEST_T(internal_comma1, true);
 109    TEST_T(external_comma1, true);
 110    TEST_T(internal_comma2, true);
 111    TEST_T(external_comma2, true);
 112    TEST_T(returns_int, true);
 113    TEST_T(returns_void, true);
 114    TEST_T(returns_void_star, true);
 115    TEST_T(returns_double, true);
 116    TEST_T(returns_convertible_to_ret1, true);
 117    TEST_T(returns_convertible_to_ret2, true);
 118    TEST_T(Base1, true);
 119    TEST_T(Derived1, true);
 120    TEST_T(Base2, false);
 121    TEST_T(Derived2, true);
 122
 123    TEST_TR(without, void, false);
 124    TEST_TR(without, bool, false);
 125    TEST_TR(internal, void, false);
 126    TEST_TR(internal, bool, false);
 127    TEST_TR(internal, ret, true);
 128    TEST_TR(internal_comma1, void, false);
 129    TEST_TR(internal_comma1, bool, false);
 130    TEST_TR(internal_comma1, ret_with_comma1, true);
 131    TEST_TR(internal_comma2, void, false);
 132    TEST_TR(internal_comma2, bool, false);
 133    TEST_TR(internal_comma2, ret_with_comma2, true);
 134    TEST_TR(external, void, false);
 135    TEST_TR(external, bool, false);
 136    TEST_TR(external, ret, true);
 137    TEST_TR(returns_int, void, false);
 138    TEST_TR(returns_int, bool, true);
 139    TEST_TR(returns_int, int, true);
 140    TEST_TR(returns_void, void, true);
 141    TEST_TR(returns_void, bool, false);
 142    TEST_TR(returns_void_star, bool, true);
 143    TEST_TR(returns_double, void, false);
 144    TEST_TR(returns_double, bool, true);
 145    TEST_TR(returns_double, double, true);
 146    TEST_TR(returns_convertible_to_ret1, void, false);
 147    TEST_TR(returns_convertible_to_ret1, ret1, true);
 148    TEST_TR(returns_convertible_to_ret2, ret2, true);
 149    TEST_TR(Base1, bool, true);
 150    TEST_TR(Derived1, bool, true);
 151    TEST_TR(Base2, bool, false);
 152    TEST_TR(Derived2, bool, true);
 153 // compile time error
 154 // TEST_T(internal_private, false);
 155 #if defined(BOOST_TT_HAS_ACCURATE_BINARY_OPERATOR_DETECTION)
 156 // There are some things that pass that wouldn't otherwise do so:
 157 #if !BOOST_WORKAROUND(BOOST_MSVC, < 1910)
 158    TEST_TR(private_op, bool, false);
 159    TEST_T(private_op, false);
 160 #endif
 161    TEST_TR(ambiguous_A, bool, true);
 162    TEST_T(ambiguous_A, true);
 163    TEST_TR(ambiguous_B, bool, true);
 164    TEST_T(ambiguous_B, true);
 165 #endif
 166 }
 167
 168 }
 169
 170 #if defined(__GNUC__) && (__GNUC__*10000 + __GNUC_MINOR__*100 + __GNUC_PATCHLEVEL__ > 40900)
 171 #pragma GCC diagnostic pop
 172 #endif
 173
 174 #endif
 175