/* * Copyright (c) 2013-2014 Isode Limited. * All rights reserved. * See the COPYING file for more information. */ #include <Sluift/Lua/Check.h> #include <boost/numeric/conversion/cast.hpp> #include <iostream> #include <sstream> #include <lua.hpp> #include <Sluift/Lua/Exception.h> #include <Swiften/Base/ByteArray.h> using namespace Swift; static std::string getArgTypeError(lua_State* L, int arg, int tag) { std::ostringstream s; s << "Arg " << arg << ": expected " << lua_typename(L, tag) << ", got " << luaL_typename(L, arg); return s.str(); } void Lua::checkType(lua_State* L, int arg, int type) { if (lua_type(L, arg) != type) { throw Lua::Exception(getArgTypeError(L, arg, type)); } } int Lua::checkIntNumber(lua_State* L, int arg) { if (!lua_isnumber(L, arg)) { throw Lua::Exception(getArgTypeError(L, arg, LUA_TNUMBER)); } return boost::numeric_cast<int>(lua_tonumber(L, arg)); } std::string Lua::checkString(lua_State* L, int arg) { const char *s = lua_tolstring(L, arg, NULL); if (!s) { throw Lua::Exception(getArgTypeError(L, arg, LUA_TSTRING)); } return std::string(s); } ByteArray Lua::checkByteArray(lua_State* L, int arg) { size_t len; const char *s = lua_tolstring(L, arg, &len); if (!s) { throw Lua::Exception(getArgTypeError(L, arg, LUA_TSTRING)); } return createByteArray(s, len); } void* Lua::checkUserDataRaw(lua_State* L, int arg) { void* userData = lua_touserdata(L, arg); if (!userData) { throw Lua::Exception(getArgTypeError(L, arg, LUA_TUSERDATA)); } if (!lua_getmetatable(L, arg)) { throw Lua::Exception(getArgTypeError(L, arg, LUA_TUSERDATA)); } lua_pop(L, 1); return userData; }