protected virtual void OnBeforeSetItem(ScopeArgs args)
{
if (BeforeSetItem != null)
{
BeforeSetItem(this, args);
}
}
public override object GetItem(string id, bool throwException)
{
ScopeArgs args = new ScopeArgs(id, RuntimeHost.NullValue);
OnBeforeGetItem(args);
if (args.Cancel)
{
if (args.Value != RuntimeHost.NullValue)
{
return args.Value;
}
else
{
throw new ScriptIdNotFoundException(id);
}
}
args.Value = base.GetItem(id, throwException);
OnAfterGetItem(args);
if (args.Cancel)
{
throw new ScriptException("Canceled by event-handler");
}
return args.Value;
}
protected virtual void OnAfterGetItem(ScopeArgs args)
{
if (AfterGetItem != null)
{
AfterGetItem(this, args);
}
}
public override object GetItem(string id, bool throwException)
{
ScopeArgs args = new ScopeArgs(id, RuntimeHost.NullValue);
OnBeforeGetItem(args);
if (args.Cancel)
{
if (args.Value != RuntimeHost.NullValue)
{
return(args.Value);
}
else
{
throw new ScriptIdNotFoundException(id);
}
}
args.Value = base.GetItem(id, throwException);
OnAfterGetItem(args);
if (args.Cancel)
{
throw new ScriptException("Canceled by event-handler");
}
return(args.Value);
}
public override void SetItem(string id, object value)
{
ScopeArgs args = new ScopeArgs(id, value);
OnBeforeSetItem(args);
if (args.Cancel)
{
return;
}
base.SetItem(id, args.Value);
OnAfterSetItem(args);
if (args.Cancel)
{
throw new ScriptException("Canceled by event-handler");
}
}
public override void SetItem(string id, object value)
{
ScopeArgs args = new ScopeArgs(id, value);
OnBeforeSetItem(args);
if (args.Cancel) return;
base.SetItem(id, args.Value);
OnAfterSetItem(args);
if (args.Cancel)
{
throw new ScriptException("Canceled by event-handler");
}
}
protected virtual void OnBeforeSetItem(ScopeArgs args)
{
if (BeforeSetItem!=null)
BeforeSetItem(this, args);
}
protected virtual void OnAfterSetItem(ScopeArgs args)
{
if (AfterSetItem != null)
AfterSetItem(this, args);
}
private void ScopeBeforeSetItem(IScriptScope sender, ScopeArgs args)
{
//TODO: Performance improvement. Should be evaluated once per function call
List<string> globalNames = GetGlobalNames(activeContext);
if (globalNames.Contains(args.Name))
{
SetToParentScope(sender.Parent, args.Name, args.Value);
args.Cancel = true;
}
//if (!sender.HasVariable(args.Name))
//{
// args.Cancel = SetToParentScope(sender.Parent, args.Name, args.Value);
//}
}
private void CheckContractInvariant(object sender, ScopeArgs args)
{
Contract.CheckInv(activeContext);
}
