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 namespace
  29 {
  30         struct operator_tester : counted_type<operator_tester>
  31         {
  32                 int operator+(int a) const
  33                 {
  34                         return 1 + a;
  35                 }
  36
  37                 int operator-() const
  38                 {
  39                         return 46;
  40                 }
  41
  42                 float operator()() const
  43                 {
  44                         return 3.5f;
  45                 }
  46
  47                 float operator()(int a) const
  48                 {
  49                         return 3.5f + a;
  50                 }
  51
  52                 float operator()(int a)
  53                 {
  54                         return 2.5f + a;
  55                 }
  56
  57         };
  58
  59         int operator+(int a, const operator_tester&)
  60         {
  61                 return 2 + a;
  62         }
  63
  64         struct operator_tester2 : counted_type<operator_tester2>
  65         {
  66         };
  67
  68         int operator+(const operator_tester&, const operator_tester2&)
  69         {
  70                 return 73;
  71         }
  72
  73         struct operator_tester3: operator_tester, counted_type<operator_tester3> {};
  74
  75         std::ostream& operator<<(std::ostream& os, const operator_tester&)
  76         {
  77                 os << "operator_tester"; return os;
  78         }
  79
  80         struct op_test1
  81         {
  82                 bool operator==(op_test1 const& rhs) const { return true; }
  83         };
  84
  85         struct op_test2 : public op_test1
  86         {
  87                 bool operator==(op_test2 const& rhs) const { return true; }
  88         };
  89
  90 } // anonymous namespace
  91
  92 void test_operators()
  93 {
  94     COUNTER_GUARD(operator_tester);
  95     COUNTER_GUARD(operator_tester2);
  96     COUNTER_GUARD(operator_tester3);
  97
  98         lua_state L;
  99
 100         using namespace luabind;
 101
 102         module(L)
 103         [
 104                 class_<operator_tester>("operator_tester")
 105                         .def(constructor<>())
 106                         .def(tostring(const_self))
 107                         .def(self + int())
 108                         .def(other<int>() + self)
 109                         .def(-self)
 110             .def(self + other<operator_tester2&>())
 111                         .def(self())
 112                         .def(const_self(int()))
 113                         .def(self(int()))
 114                         .def(tostring(const_self)),
 115 //                      .def("clone", &clone, adopt(return_value)),
 116
 117                 class_<operator_tester2>("operator_tester2")
 118                         .def(constructor<>())
 119                         .def(other<const operator_tester&>() + self),
 120
 121                 class_<operator_tester3, operator_tester>("operator_tester3")
 122                         .def(constructor<>()),
 123
 124                 class_<op_test1>("op_test1")
 125                         .def(constructor<>())
 126                         .def(const_self == const_self),
 127
 128                 class_<op_test2, op_test1>("op_test2")
 129                         .def(constructor<>())
 130                         .def(self == self)
 131         ];
 132
 133         DOSTRING(L, "test = operator_tester()");
 134         DOSTRING(L, "test2 = operator_tester2()");
 135         DOSTRING(L, "test3 = operator_tester3()");
 136
 137         DOSTRING(L, "assert(tostring(test) == 'operator_tester')");
 138
 139         DOSTRING(L, "assert(test() == 3.5)");
 140         DOSTRING(L, "assert(test(5) == 2.5 + 5)");
 141
 142         DOSTRING(L, "assert(-test == 46)");
 143         DOSTRING(L, "assert(test + test2 == 73)");
 144         DOSTRING(L, "assert(2 + test == 2 + 2)");
 145         DOSTRING(L, "assert(test + 2 == 1 + 2)");
 146         DOSTRING(L, "assert(test3 + 6 == 1 + 6)");
 147         DOSTRING(L, "assert(test3 + test2 == 73)");
 148 //      DOSTRING(L, "assert(tostring(test) == 'operator_tester')");
 149
 150         const char* prog =
 151                 "class 'my_class'\n"
 152                 "function my_class:__add(lhs)\n"
 153                 "       return my_class(self.val + lhs.val)\n"
 154                 "end\n"
 155                 "function my_class:__init(a)\n"
 156                 "       self.val = a\n"
 157                 "end\n"
 158                 "function my_class:__sub(v)\n"
 159                 "       if (type(self) == 'number') then\n"
 160                 "               return my_class(self - v.val)\n"
 161                 "       elseif (type(v) == 'number') then\n"
 162                 "               return my_class(self.val - v)\n"
 163                 "       else\n"
 164                 "               return my_class(self.val - v.val)\n"
 165                 "       end\n"
 166                 "end\n"
 167                 "a = my_class(3)\n"
 168                 "b = my_class(7)\n"
 169                 "c = a + b\n"
 170                 "d = a - 2\n"
 171                 "d = 10 - d\n"
 172                 "d = d - b\n";
 173
 174         DOSTRING(L, prog);
 175         DOSTRING(L, "assert(c.val == 10)");
 176         DOSTRING(L, "assert(d.val == 2)");
 177
 178     DOSTRING(L,
 179                 "a = op_test1()\n"
 180                 "b = op_test2()\n"
 181                 "assert(a == b)");
 182 }