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                 char buffer[1024];
  21                 sprintf(buffer, "argument #%i to %s must be numeric", argindex, fname);
  22                 lua_pushstring(LS, buffer);
  23                 lua_error(LS);
  24         }
  25         return static_cast<T>(lua_tonumber(LS, argindex));
  26 }
  27
  28 template<typename T>
  29 void get_numeric_argument(lua_State* LS, unsigned argindex, T& value, const char* fname)
  30 {
  31         if(lua_isnoneornil(LS, argindex))
  32                 return;
  33         if(lua_isnone(LS, argindex) || !lua_isnumber(LS, argindex)) {
  34                 char buffer[1024];
  35                 sprintf(buffer, "argument #%i to %s must be numeric if present", argindex, fname);
  36                 lua_pushstring(LS, buffer);
  37                 lua_error(LS);
  38         }
  39         value = static_cast<T>(lua_tonumber(LS, argindex));
  40 }
  41
  42 #endif