/// <summary>
/// Assuming we have a Lua error string sitting on the stack, throw a C# exception out to the user's app
/// </summary>
/// <exception cref="LuaScriptException">Thrown if the script caused an exception</exception>
void ThrowExceptionFromError(int oldTop)
{
string msg = "";
if (Lua.lua_isstring(luaState, -1) == 1)
{
msg = Lua.lua_tostring(luaState, -1);
}
else if (Lua.lua_isnumber(luaState, -1) == 1 ||
Lua.lua_isboolean(luaState, -1) ||
Lua.lua_iscfunction(luaState, -1) ||
Lua.lua_isfunction(luaState, -1) ||
Lua.lua_isthread(luaState, -1) ||
Lua.lua_istable(luaState, -1)
)
{
msg = "Unknown Lua Error";
}
else
{
object err = translator.getObject(luaState, -1);
LuaDLL.lua_settop(luaState, oldTop);
// A pre-wrapped exception - just rethrow it (stack trace of InnerException will be preserved)
LuaException luaEx = err as LuaException;
if (luaEx != null)
{
throw luaEx;
}
// A non-wrapped Lua error (best interpreted as a string) - wrap it and throw it
if (err == null)
{
msg = "Unknown Lua Error";
}
else
{
msg = err.ToString();
}
}
throw new LuaException(msg);
}