public virtual NodeValue Concat(NodeValue other)
{
if(other == null)
return this;
return new CompoundNodeValue(Enumerations.Combine(Terminals, other.Terminals));
}
public static NodeValue Concat(NodeValue a, NodeValue b)
{
return
a == null ? b :
b is NullNodeValue ? b :
a.Concat(b);
}
public FileValueContext(NodeContext parent, FileValueNode node)
: base(parent, node)
{
KeyValuePair<string, string> splitName = FileValues.SplitName(((FileValueNode)Node).Value);
IFileValues fileValues = null;
if(!Root.GetShared<FileValueShared>().FileValues.TryGetValue(splitName.Key, out fileValues))
throw new ApplicationException("FileValues not found: " + splitName.Key);
val = fileValues.Get(splitName.Value) ?? new NullNodeValue();
}
public override NodeValue Concat(NodeValue other)
{
if(other is StaticNodeValue)
return new StaticNodeValue(Value + ((StaticNodeValue)other).Value);
else
return base.Concat(other);
}
public override NodeValue Concat(NodeValue other)
{
return this;
}
public TextContext(NodeContext parent, TextNode node)
: base(parent, node)
{
val = new StaticNodeValue(((TextNode)Node).Value);
}