source: trunk/src/lua/lua_values.cc @ 183

// Copyright (C) 2012-2013 ChaosForge / Kornel Kisielewicz
// http://chaosforge.org/
//
// This file is part of NV Libraries.
// For conditions of distribution and use, see copyright notice in nv.hh

#include "nv/lua/lua_values.hh"

#include "nv/lua/lua_raw.hh"
#include "nv/object.hh"

void nv::lua::detail::push_value( lua_State *L, long n )
{
        lua_pushinteger( L, n );
}

void nv::lua::detail::push_value( lua_State *L, double d )
{
        lua_pushnumber( L, d );
}

void nv::lua::detail::push_value( lua_State *L, bool n )
{
        lua_pushboolean( L, n );
}

void nv::lua::detail::push_value( lua_State *L, const char* s )
{
        lua_pushstring( L, s );
}

void nv::lua::detail::push_value( lua_State *L, const std::string& s )
{
        lua_pushstring( L, s.c_str() );
}

void nv::lua::detail::push_value( lua_State *L, object* o )
{
        if ( o == nullptr )
        {
                lua_pushnil( L );
        }
        else
        {
                lua_rawgeti( L, LUA_REGISTRYINDEX, o->get_lua_index() );
        }
}

void nv::lua::detail::push_value( lua_State *L, void* p )
{
        lua_pushlightuserdata( L, p );
}

void nv::lua::detail::pop_value( lua_State *L, long& n )
{
        n = lua_tointeger( L, -1 );
        lua_pop( L, 1 );
}

void nv::lua::detail::pop_value( lua_State *L, double& d )
{
        d = lua_tonumber( L, -1 );
        lua_pop( L, 1 );
}

void nv::lua::detail::pop_value( lua_State *L, bool& n )
{
        n = lua_toboolean( L, -1 ) != 0;
        lua_pop( L, 1 );
}

void nv::lua::detail::pop_value( lua_State *L, std::string& s )
{
        s = lua_tostring( L, -1 ); 
        lua_pop( L, 1 );
}

void nv::lua::detail::pop_value( lua_State *L, object*& o )
{
        o = nullptr;
        if ( lua_istable( L , -1 ) )
        {
                lua_pushstring( L, "__ptr" );
                lua_rawget( L, -1 );
                if ( lua_isuserdata( L, -1 ) )
                {
                        o = (object*)( lua_touserdata( L, -1 ) );
                } 
                lua_pop( L, 1 );
        }
        lua_pop( L, 1 );
}

void nv::lua::detail::pop_value( lua_State *L, void*& p )
{
        p = lua_touserdata( L, -1 );
        lua_pop( L, 1 );
}