public static PipeValue Length(PipeValue obj)
{
if (obj.IsEvallable)
{
if (obj.HasProperty("length"))
{
return(obj["length"]);
}
}
return(0);
}
public PipeValue Evaluate(EvaluationContext context, bool checkValid, out bool isValid)
{
CommonHelper.ConfirmNotNull(context, "context");
isValid = true;
PipeValue value = context.CurrentValue;
if (this.Count > 0)
{
ConstantObjectPath m = this[0] as ConstantObjectPath;
if (m != null)
{
switch (m.Value)
{
case "#":
return(value.Value is PipeValuePropertyEnumerator ? ((PipeValuePropertyEnumerator)value.Value).CurrentKey : PipeValue.Undefined);
case "##":
return(value.Value is PipeValuePropertyEnumerator ? ((PipeValuePropertyEnumerator)value.Value).CurrentIndex : PipeValue.Undefined);
case "#count":
return(value.Value is PipeValuePropertyEnumerator ? ((PipeValuePropertyEnumerator)value.Value).Count : 0);
}
}
}
value = value.Value is PipeValuePropertyEnumerator ? ((PipeValuePropertyEnumerator)value.Value).CurrentValue : value;
if (this.Count > 0)
{
ConstantObjectPath m = this[0] as ConstantObjectPath;
if (m != null)
{
int intValue;
bool hasPropertyName = value.IsEvallable && (value.Type != PipeValueType.Object ? value[m.Value] != PipeValue.Undefined : (value.HasProperty(m.Value) || (value.IsArray && Int32.TryParse(m.Value, out intValue))));
if (checkValid && !hasPropertyName && !context.Globals.ContainsKey(m.Value))
{
isValid = false;
return(value);
}
value = hasPropertyName ? value[m.Value] : context.Globals[m.Value];
}
}
for (int i = 1, len = this.Count; i < len && value.IsEvallable; i++)
{
string name = this[i] is ConstantObjectPath ? ((ConstantObjectPath)this[i]).Value : (string)this[i].Evaluate(context);
value = value[name];
}
return(value);
}