public void AddChild(MultiTreeNode <T> child)
{
child.Parent = this;
child._sibling = _child;
_child = child;
Count++;
}
public MultiTreeNode(T data, MultiTreeNode <T> parent = null)
{
Data = data;
Parent = parent;
_sibling = parent;
_child = this;
}
internal static Container Interpret(ICodeBlock context, MultiTreeNode <Value> line)
{
switch (line.Data.Type)
{
case ValueType.Function when line.Data.Val is string fname:
if (fname == "=" && line.PeekChild().Data.Type == ValueType.Variable)
{
context.SetVariable(line.PeekChild().Data.Val as string,
Interpret(context, line.PeekChild().PeekSibling()).value);
return(null);
}
else
{
return(Library.Functions[fname]
(line.GetChildren().Select(v => Interpret(context, v)).ToList()));
}
case ValueType.Value:
return(new Container(line.Data.Val));
case ValueType.Variable when line.Data.Val is string vname:
return(context.GetVariable(vname));
default:
return(null);
}
}
private void OnClosingSquareBracket()
{
var funcNode = new MultiTreeNode <Value>(new Value(ValueType.Function, null));
while (OperationsStack.Peek() != "[")
{
if (EvalOperator() == ",")
{
funcNode.AddChild(OperandsStack.Pop());
}
}
OperationsStack.Pop();
if (OperationsStack.Count > 0 && OperationsStack.Peek() == "MkList")
{
funcNode.Data.Val = OperationsStack.Pop();
OperandsStack.Push(funcNode);
return;
}
if (OperationsStack.Count > 0 && OperationsStack.Peek() == "ByIdx")
{
funcNode.Data.Val = OperationsStack.Pop();
funcNode.AddChild(OperandsStack.Pop());
funcNode.AddChild(OperandsStack.Pop());
OperandsStack.Push(funcNode);
return;
}
}
private void OnClosingBracket()
{
var funcNode = new MultiTreeNode <Value>(new Value(ValueType.Function, null));
while (OperationsStack.Peek() != "(")
{
if (EvalOperator() == ",")
{
funcNode.AddChild(OperandsStack.Pop());
}
}
OperationsStack.Pop();
if (OperationsStack.Count > 0 && Library.IsFunction(OperationsStack.Peek()))
{
funcNode.Data.Val = OperationsStack.Pop();
OperandsStack.Push(funcNode);
return;
}
if (funcNode.Count > 0)
{
funcNode.Data.Val = "MkTuple";
OperandsStack.Push(funcNode);
}
}
public MultiTreeNode <T> PopChild()
{
var c = _child;
if (c == this)
{
return(null);
}
_child = _child._sibling;
Count--;
return(c);
}
private string EvalOperator()
{
var op = OperationsStack.Pop();
if (op == ",")
{
return(op);
}
if (!Library.Operators.ContainsKey(op))
{
throw new ArgumentException($"Expected operator, but was <{op}>");
}
var opNode = new MultiTreeNode <Value>(new Value(ValueType.Function, op));
opNode.AddChild(OperandsStack.Pop());
opNode.AddChild(OperandsStack.Pop());
OperandsStack.Push(opNode);
return(op);
}