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
  27 namespace
  28 {
  29         struct operator_tester : counted_type<operator_tester>
  30         {
  31                 int operator+(int a) const
  32                 {
  33                         return 1 + a;
  34                 }
  35
  36                 int operator-() const
  37                 {
  38                         return 46;
  39                 }
  40
  41                 float operator()() const
  42                 {
  43                         return 3.5f;
  44                 }
  45
  46                 float operator()(int a) const
  47                 {
  48                         return 3.5f + a;
  49                 }
  50
  51                 float operator()(int a)
  52                 {
  53                         return 2.5f + a;
  54                 }
  55
  56         };
  57
  58         int operator+(int a, const operator_tester&)
  59         {
  60                 return 2 + a;
  61         }
  62
  63         struct operator_tester2 : counted_type<operator_tester2>
  64         {
  65         };
  66
  67         int operator+(const operator_tester&, const operator_tester2&)
  68         {
  69                 return 73;
  70         }
  71
  72         struct operator_tester3: operator_tester, counted_type<operator_tester3> {};
  73
  74         std::ostream& operator<<(std::ostream& os, const operator_tester&)
  75         {
  76                 os << "operator_tester"; return os;
  77         }
  78
  79         struct op_test1
  80         {
  81                 bool operator==(op_test1 const& rhs) const { return true; }
  82         };
  83
  84         struct op_test2 : public op_test1
  85         {
  86                 bool operator==(op_test2 const& rhs) const { return true; }
  87         };
  88
  89 } // anonymous namespace
  90
  91 void test_operators()
  92 {
  93     COUNTER_GUARD(operator_tester);
  94     COUNTER_GUARD(operator_tester2);
  95     COUNTER_GUARD(operator_tester3);
  96
  97         lua_state L;
  98
  99         using namespace luabind;
 100
 101         module(L)
 102         [
 103                 class_<operator_tester>("operator_tester")
 104                         .def(constructor<>())
 105                         .def(tostring(const_self))
 106                         .def(self + int())
 107                         .def(other<int>() + self)
 108                         .def(-self)
 109             .def(self + other<operator_tester2&>())
 110                         .def(self())
 111                         .def(const_self(int()))
 112                         .def(self(int())),
 113 //                      .def("clone", &clone, adopt(return_value)),
 114
 115                 class_<operator_tester2>("operator_tester2")
 116                         .def(constructor<>())
 117                         .def(other<const operator_tester&>() + self),
 118
 119                 class_<operator_tester3, operator_tester>("operator_tester3")
 120                         .def(constructor<>()),
 121
 122                 class_<op_test1>("op_test1")
 123                         .def(constructor<>())
 124                         .def(const_self == const_self),
 125
 126                 class_<op_test2, op_test1>("op_test2")
 127                         .def(constructor<>())
 128                         .def(self == self)
 129         ];
 130
 131         DOSTRING(L, "test = operator_tester()");
 132         DOSTRING(L, "test2 = operator_tester2()");
 133         DOSTRING(L, "test3 = operator_tester3()");
 134
 135         DOSTRING(L, "assert(test() == 3.5)");
 136         DOSTRING(L, "assert(test(5) == 2.5 + 5)");
 137
 138         DOSTRING(L, "assert(-test == 46)");
 139         DOSTRING(L, "assert(test + test2 == 73)");
 140         DOSTRING(L, "assert(2 + test == 2 + 2)");
 141         DOSTRING(L, "assert(test + 2 == 1 + 2)");
 142         DOSTRING(L, "assert(test3 + 6 == 1 + 6)");
 143         DOSTRING(L, "assert(test3 + test2 == 73)");
 144 //      DOSTRING(L, "assert(tostring(test) == 'operator_tester')");
 145
 146         const char* prog =
 147                 "class 'my_class'\n"
 148                 "function my_class:__add(lhs)\n"
 149                 "       return my_class(self.val + lhs.val)\n"
 150                 "end\n"
 151                 "function my_class:__init(a)\n"
 152                 "       self.val = a\n"
 153                 "end\n"
 154                 "function my_class:__sub(v)\n"
 155                 "       if (type(self) == 'number') then\n"
 156                 "               return my_class(self - v.val)\n"
 157                 "       elseif (type(v) == 'number') then\n"
 158                 "               return my_class(self.val - v)\n"
 159                 "       else\n"
 160                 "               return my_class(self.val - v.val)\n"
 161                 "       end\n"
 162                 "end\n"
 163                 "a = my_class(3)\n"
 164                 "b = my_class(7)\n"
 165                 "c = a + b\n"
 166                 "d = a - 2\n"
 167                 "d = 10 - d\n"
 168                 "d = d - b\n";
 169
 170         DOSTRING(L, prog);
 171         DOSTRING(L, "assert(c.val == 10)");
 172         DOSTRING(L, "assert(d.val == 2)");
 173
 174     DOSTRING(L,
 175                 "a = op_test1()\n"
 176                 "b = op_test2()\n"
 177                 "assert(a == b)");
 178 }