public DekiScriptOutputBuffer.Range Visit(DekiScriptTryCatchFinally expr, DekiScriptExpressionEvaluationState state)
{
int marker = state.Buffer.Marker;
try {
expr.Try.VisitWith(this, state);
} catch (DekiScriptFatalException) {
throw;
} catch (DekiScriptControlFlowException) {
throw;
} catch (Exception e) {
state.Buffer.Reset(marker);
// translate exception to an error object
DekiScriptMap error = DekiScriptLibrary.MakeErrorObject(e, state.Env);
// capture error object in a nested environment
try {
state.Env.Vars.Add(expr.Variable, error);
expr.Catch.VisitWith(this, state);
} finally {
state.Env.Vars.Add(expr.Variable, DekiScriptNil.Value);
}
} finally {
expr.Finally.VisitWith(this, state);
}
return(state.Buffer.Since(marker));
}
public void ThrowIfTimedout()
{
if (_sharedState.EvaluationTimer == null)
{
return;
}
if (_sharedState.EvaluationTimer.Elapsed <= _sharedState.EvaluationTimeout)
{
return;
}
_sharedState.EvaluationTimer.Stop();
var e = new TimeoutException("script execution has timed out");
var error = DekiScriptLibrary.MakeErrorObject(e, Env);
_sharedState.EvaluationError = new DekiScriptXml(DekiScriptLibrary.WebShowError((Hashtable)error.NativeValue));
throw e;
}
public DekiScriptOutputBuffer.Range Visit(DekiScriptReturnScope expr, DekiScriptExpressionEvaluationState state)
{
int marker = state.Buffer.Marker;
try {
if (state.FatalEvaluationError == null)
{
state.ThrowIfTimedout();
return(expr.Value.VisitWith(this, state));
}
state.Push(state.FatalEvaluationError);
} catch (DekiScriptReturnException e) {
state.Push(e.Value);
} catch (DekiScriptControlFlowException) {
// nothing to do
} catch (Exception e) {
var error = DekiScriptLibrary.MakeErrorObject(e, state.Env);
state.Runtime.LogExceptionInOutput(error);
state.Push(new DekiScriptXml(DekiScriptLibrary.WebShowError((Hashtable)error.NativeValue)));
}
return(state.Buffer.Since(marker));
}