test/test_operators.cpp

   1 // Copyright (c) 2003 Daniel Wallin and Arvid Norberg
   2
   3 // Permission is hereby granted, free of charge, to any person obtaining a
   4 // copy of this software and associated documentation files (the "Software"),
   5 // to deal in the Software without restriction, including without limitation
   6 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
   7 // and/or sell copies of the Software, and to permit persons to whom the
   8 // Software is furnished to do so, subject to the following conditions:
   9
  10 // The above copyright notice and this permission notice shall be included
  11 // in all copies or substantial portions of the Software.
  12
  13 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
  14 // ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
  15 // TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
  16 // PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
  17 // SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
  18 // ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  19 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE
  21 // OR OTHER DEALINGS IN THE SOFTWARE.
  22
  23 #include "test.hpp"
  24 #include <luabind/luabind.hpp>
  25 #include <luabind/operator.hpp>
  26 #include <iosfwd>
  27
  28 struct operator_tester : counted_type<operator_tester>
  29 {
  30         int operator+(int a) const
  31         {
  32                 return 1 + a;
  33         }
  34
  35         int operator-() const
  36         {
  37                 return 46;
  38         }
  39
  40         float operator()() const
  41         {
  42                 return 3.5f;
  43         }
  44
  45         float operator()(int a) const
  46         {
  47                 return 3.5f + a;
  48         }
  49
  50         float operator()(int a)
  51         {
  52                 return 2.5f + a;
  53         }
  54 };
  55
  56 float operator*(operator_tester const& lhs, operator_tester const& rhs)
  57 {
  58         return 35.f;
  59 }
  60
  61 std::string operator*(operator_tester const&, int v)
  62 {
  63         return "(operator_tester, int) overload";
  64 }
  65
  66 int operator+(int a, const operator_tester&)
  67 {
  68         return 2 + a;
  69 }
  70
  71 struct operator_tester2 : counted_type<operator_tester2>
  72 {
  73 };
  74
  75 int operator+(const operator_tester&, const operator_tester2&)
  76 {
  77         return 73;
  78 }
  79
  80 struct operator_tester3: operator_tester, counted_type<operator_tester3> {};
  81
  82 std::ostream& operator<<(std::ostream& os, const operator_tester&)
  83 {
  84         os << "operator_tester"; return os;
  85 }
  86
  87 struct op_test1
  88 {
  89         bool operator==(op_test1 const& rhs) const { return true; }
  90 };
  91
  92 struct op_test2 : public op_test1
  93 {
  94         bool operator==(op_test2 const& rhs) const { return true; }
  95 };
  96
  97 COUNTER_GUARD(operator_tester);
  98 COUNTER_GUARD(operator_tester2);
  99 COUNTER_GUARD(operator_tester3);
 100
 101 void test_main(lua_State* L)
 102 {
 103         using namespace luabind;
 104
 105         module(L)
 106         [
 107                 class_<operator_tester>("operator_tester")
 108                         .def(constructor<>())
 109                         .def(tostring(const_self))
 110                         .def(self + int())
 111                         .def(other<int>() + self)
 112                         .def(-self)
 113                         .def(self + other<operator_tester2&>())
 114                         .def(self())
 115                         .def(const_self(int()))
 116                         .def(self(int()))
 117                         .def(tostring(const_self))
 118 //                      .def(const_self * other<operator_tester const&>())
 119                         .def(const_self * const_self)
 120                         .def(const_self * other<int>()),
 121 //                      .def("clone", &clone, adopt(return_value)),
 122
 123                 class_<operator_tester2>("operator_tester2")
 124                         .def(constructor<>())
 125                         .def(other<const operator_tester&>() + self),
 126
 127                 class_<operator_tester3, operator_tester>("operator_tester3")
 128                         .def(constructor<>()),
 129
 130                 class_<op_test1>("op_test1")
 131                         .def(constructor<>())
 132                         .def(const_self == const_self),
 133
 134                 class_<op_test2, op_test1>("op_test2")
 135                         .def(constructor<>())
 136                         .def(self == self)
 137         ];
 138
 139         DOSTRING(L, "test = operator_tester()");
 140         DOSTRING(L, "test2 = operator_tester2()");
 141         DOSTRING(L, "test3 = operator_tester3()");
 142
 143         DOSTRING(L, "assert(tostring(test) == 'operator_tester')");
 144
 145         DOSTRING(L, "assert(test() == 3.5)");
 146         DOSTRING(L, "assert(test(5) == 2.5 + 5)");
 147
 148         DOSTRING(L, "assert(-test == 46)");
 149         DOSTRING(L, "assert(test * test == 35)");
 150         DOSTRING(L, "assert(test * 3 == '(operator_tester, int) overload')")
 151         DOSTRING(L, "assert(test + test2 == 73)");
 152         DOSTRING(L, "assert(2 + test == 2 + 2)");
 153         DOSTRING(L, "assert(test + 2 == 1 + 2)");
 154         DOSTRING(L, "assert(test3 + 6 == 1 + 6)");
 155         DOSTRING(L, "assert(test3 + test2 == 73)");
 156 //      DOSTRING(L, "assert(tostring(test) == 'operator_tester')");
 157
 158         const char* prog =
 159                 "class 'my_class'\n"
 160                 "function my_class:__add(lhs)\n"
 161                 "       return my_class(self.val + lhs.val)\n"
 162                 "end\n"
 163                 "function my_class:__init(a)\n"
 164                 "       self.val = a\n"
 165                 "end\n"
 166                 "function my_class:__sub(v)\n"
 167                 "       if (type(self) == 'number') then\n"
 168                 "               return my_class(self - v.val)\n"
 169                 "       elseif (type(v) == 'number') then\n"
 170                 "               return my_class(self.val - v)\n"
 171                 "       else\n"
 172                 "               return my_class(self.val - v.val)\n"
 173                 "       end\n"
 174                 "end\n"
 175                 "a = my_class(3)\n"
 176                 "b = my_class(7)\n"
 177                 "c = a + b\n"
 178                 "d = a - 2\n"
 179                 "d = 10 - d\n"
 180                 "d = d - b\n";
 181
 182         DOSTRING(L, prog);
 183         DOSTRING(L, "assert(c.val == 10)");
 184         DOSTRING(L, "assert(d.val == 2)");
 185
 186     DOSTRING(L,
 187                 "a = op_test1()\n"
 188                 "b = op_test2()\n"
 189                 "assert(a == b)");
 190 }
 191