public RenameExpression(CaptureName name, CaptureName newName)
{
if (newName.Parts.Count() != 1)
{
throw new NotImplementedException(); // TODO:
}
Name = name;
NewName = newName;
}
public void Open(CaptureName name)
{
if (Current is null)
{
throw new InvalidOperationException("Capture tree is fully closed.");
}
foreach (var part in name.Parts)
{
var node = new CaptureTreeNode(this, part);
Current.Add(node);
Current = node;
}
}
public override IEnumerable <ExpressionResult> RunInternal(ExpressionContext context)
{
foreach (var capture in context.CaptureTree[Name])
{
capture.Name = NewName.Head;
}
yield return(new());
var localName = Name.Parts.Last();
var newFullName = new CaptureName(Name.Parts.Take(Name.Parts.Count() - 1).Concat(NewName.Parts).ToArray());
foreach (var capture in context.CaptureTree[newFullName])
{
capture.Name = localName;
}
}
public void Unopen(CaptureName name)
{
if (Current is null)
{
throw new InvalidOperationException("Capture tree is fully closed.");
}
foreach (var part in name.Parts.Reverse())
{
if (Current.Name != part)
{
throw new InvalidOperationException();
}
Current = Current.Parent ?? throw new InvalidOperationException();
Current.Unadd();
}
}
public void Close(CaptureName name, ExpressionResult value)
{
if (Current is null)
{
throw new InvalidOperationException("Capture tree is fully closed.");
}
foreach (var part in name.Parts.Reverse())
{
if (Current?.Name != part)
{
throw new InvalidOperationException();
}
Current.IsOpen = false;
Current.Value = value;
Current = Current.Parent;
}
}
public void Unclose(CaptureName name)
{
if (Current is null)
{
throw new InvalidOperationException("Capture tree is fully closed.");
}
foreach (var part in name.Parts)
{
this.Current = this.Current.Children.First();
if (this.Current.Name != part)
{
throw new InvalidOperationException();
}
Current.Value = null;
Current.IsOpen = true;
}
}
public BackreferenceExpression(CaptureName name)
{
Name = name;
}
public ScopeExpression(CaptureName name, Expression expression)
{
Name = name;
Expression = expression;
}
public void Unset(CaptureName name)
{
Unclose(name);
Unopen(name);
}
public void Set(CaptureName name, ExpressionResult value)
{
Open(name);
Close(name, value);
}
public AssignmentExpression(CaptureName name, TextValueExpression value)
{
Name = name;
Value = value;
}