/// <summary> An AttributeSource that uses the same attributes as the supplied one.</summary>
public AttributeSource(AttributeSource input)
{
if (input == null)
{
throw new System.ArgumentException("input AttributeSource must not be null");
}
this.attributes = input.attributes;
this.attributeImpls = input.attributeImpls;
this.currentState = input.currentState;
this.factory = input.factory;
}
public override bool Equals(System.Object obj)
{
if (obj == this)
{
return(true);
}
if (obj is AttributeSource)
{
AttributeSource other = (AttributeSource)obj;
if (HasAttributes)
{
if (!other.HasAttributes)
{
return(false);
}
if (this.attributeImpls.Count != other.attributeImpls.Count)
{
return(false);
}
// it is only equal if all attribute impls are the same in the same order
var thisState = this.GetCurrentState();
var otherState = other.GetCurrentState();
while (thisState != null && otherState != null)
{
if (otherState.attribute.GetType() != thisState.attribute.GetType() || !otherState.attribute.Equals(thisState.attribute))
{
return(false);
}
thisState = thisState.next;
otherState = otherState.next;
}
return(true);
}
else
{
return(!other.HasAttributes);
}
}
else
{
return(false);
}
}