/*
* Passes errors (argument e) to the Lua interpreter
*/
internal void throwError(IntPtr luaState, object e)
{
// We use this to remove anything pushed by luaL_where
int oldTop = LuaDLL.lua_gettop(luaState);
// Stack frame #1 is our C# wrapper, so not very interesting to the user
// Stack frame #2 must be the lua code that called us, so that's what we want to use
LuaDLL.luaL_where(luaState, 1);
object[] curlev = popValues(luaState, oldTop);
// Determine the position in the script where the exception was triggered
string errLocation = "";
if (curlev.Length > 0)
errLocation = curlev[0].ToString();
string message = e as string;
if (message != null)
{
// Wrap Lua error (just a string) and store the error location
e = new LuaScriptException(message, errLocation);
}
else
{
Exception ex = e as Exception;
if (ex != null)
{
// Wrap generic .NET exception as an InnerException and store the error location
e = new LuaScriptException(ex, errLocation);
}
}
push(luaState, e);
LuaDLL.lua_error(luaState);
}
/// <summary>[-0, +0, v] Passes errors (argument e) to the Lua interpreter. This function throws a Lua exception, and therefore never returns.</summary>
internal int throwError(lua.State L, Exception ex)
{
Debug.Assert(interpreter.IsSameLua(L));
Debug.Assert(ex != null);
luaL.checkstack(L, 1, "ObjectTranslator.throwError");
// Determine the position in the script where the exception was triggered
// Stack frame #0 is our C# wrapper, so not very interesting to the user
// Stack frame #1 must be the lua code that called us, so that's what we want to use
string errLocation = luanet.where (L, 1);
// Wrap generic .NET exception as an InnerException and store the error location
ex = new LuaScriptException(ex, errLocation);
// don't need to check the stack, same pattern as luaL_error
push(L, ex);
return(lua.error(L));
}
/// <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)
{
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)
LuaScriptException luaEx = err as LuaScriptException;
if (luaEx != null)
{
throw luaEx;
}
// A non-wrapped Lua error (best interpreted as a string) - wrap it and throw it
if (err == null)
{
err = "Unknown Lua Error";
}
throw new LuaScriptException(err.ToString(), "");
}
/*
* Passes errors (argument e) to the Lua interpreter
*/
internal void throwError(LuaCore.lua_State luaState, object e)
{
// We use this to remove anything pushed by luaL_where
int oldTop = LuaLib.lua_gettop(luaState);
// Stack frame #1 is our C# wrapper, so not very interesting to the user
// Stack frame #2 must be the lua code that called us, so that's what we want to use
LuaLib.luaL_where(luaState, 1);
var curlev = popValues(luaState, oldTop);
// Determine the position in the script where the exception was triggered
string errLocation = string.Empty;
if (curlev.Length > 0)
{
errLocation = curlev[0].ToString();
}
string message = e as string;
if (!message.IsNull())
{
// Wrap Lua error (just a string) and store the error location
e = new LuaScriptException(message, errLocation);
}
else
{
var ex = e as Exception;
if (!ex.IsNull())
{
// Wrap generic .NET exception as an InnerException and store the error location
e = new LuaScriptException(ex, errLocation);
}
}
push(luaState, e);
LuaLib.lua_error(luaState);
}
