lua-int.hpp

   1 #ifndef _lua_int__hpp__included__
   2 #define _lua_int__hpp__included__
   3
   4 #include "lua.hpp"
   5 extern "C"
   6 {
   7 #include <lua.h>
   8 }
   9
  10 std::string get_string_argument(lua_State* LS, unsigned argindex, const char* fname);
  11 bool get_boolean_argument(lua_State* LS, unsigned argindex, const char* fname);
  12 extern lua_render_context* lua_render_ctx;
  13 extern controls_t* lua_input_controllerdata;
  14
  15
  16 template<typename T>
  17 T get_numeric_argument(lua_State* LS, unsigned argindex, const char* fname)
  18 {
  19         if(lua_isnone(LS, argindex) || !lua_isnumber(LS, argindex)) {
  20                 lua_pushfstring(LS, "argument #%i to %s must be numeric", argindex, fname);
  21                 lua_error(LS);
  22         }
  23         return static_cast<T>(lua_tonumber(LS, argindex));
  24 }
  25
  26 template<typename T>
  27 void get_numeric_argument(lua_State* LS, unsigned argindex, T& value, const char* fname)
  28 {
  29         if(lua_isnoneornil(LS, argindex))
  30                 return;
  31         if(lua_isnone(LS, argindex) || !lua_isnumber(LS, argindex)) {
  32                 lua_pushfstring(LS, "argument #%i to %s must be numeric if present", argindex, fname);
  33                 lua_error(LS);
  34         }
  35         value = static_cast<T>(lua_tonumber(LS, argindex));
  36 }
  37
  38 #endif