luabind/detail/operator_id.hpp

   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
  24 #ifndef LUABIND_OPERATOR_ID_HPP_INCLUDED
  25 #define LUABIND_OPERATOR_ID_HPP_INCLUDED
  26
  27 #include <luabind/config.hpp>
  28
  29 namespace luabind { namespace detail {
  30
  31         enum operator_id
  32         {
  33                 op_add = 0,
  34                 op_sub,
  35                 op_mul,
  36                 op_div,
  37                 op_pow,
  38                 op_lt,
  39                 op_le,
  40                 op_eq,
  41                 op_call,
  42                 op_unm,
  43                 op_tostring,
  44
  45                 number_of_operators
  46         };
  47
  48         struct op_add_tag {};
  49         struct op_sub_tag {};
  50         struct op_mul_tag {};
  51         struct op_div_tag {};
  52         struct op_pow_tag {};
  53         struct op_lt_tag {};
  54         struct op_le_tag {};
  55         struct op_eq_tag {};
  56         struct op_call_tag {};
  57         struct op_unm_tag {};
  58         struct op_tostring_tag {};
  59
  60         inline const char* get_operator_name(int i)
  61         {
  62                 static const char* a[number_of_operators] =
  63                         {"__add", "__sub", "__mul", "__div", "__pow", "__lt", "__le", "__eq", "__call", "__unm", "__tostring" };
  64                 return a[i];
  65         }
  66
  67         inline const char* get_operator_symbol(int i)
  68         {
  69                 static const char* a[number_of_operators] =
  70                         {"+", "-", "*", "/", "^", "<", "<=", "==", "()", "- (unary)", "tostring" };
  71                 return a[i];
  72         }
  73
  74         inline bool is_unary(int i)
  75         {
  76                 // the reason why unary minus is not considered a unary operator here is
  77                 // that it always is given two parameters, where the second parameter always
  78                 // is nil.
  79                 return i == op_tostring;
  80         }
  81
  82
  83 }}
  84
  85 #endif // LUABIND_OPERATOR_ID_HPP_INCLUDED
  86