public override Node Clone(Node newParent)
{
var newExpression = new Expression(newParent);
foreach (var child in Children)
{
newExpression.Children.Add(child.Clone(newExpression));
}
return newExpression;
}
internal static bool TryParse(Node parent, Queue<Word> remainingWords, out Expression expression)
{
expression = new Expression(parent);
while (remainingWords.Count > 0 &&
remainingWords.Peek().Text != ";" &&
remainingWords.Peek().Text != "," &&
remainingWords.Peek().Text != ")" &&
remainingWords.Peek().Text != "}")
{
Add add;
if (Add.TryParse(expression, remainingWords, out add))
{
expression.Children.Add(add);
}
Subtract subtract;
if (Subtract.TryParse(expression, remainingWords, out subtract))
{
expression.Children.Add(subtract);
}
Multiply multiply;
if (Multiply.TryParse(expression, remainingWords, out multiply))
{
expression.Children.Add(multiply);
}
Divide divide;
if (Divide.TryParse(expression, remainingWords, out divide))
{
expression.Children.Add(divide);
}
Variable variable;
if (Variable.TryParse(expression, remainingWords, out variable))
{
expression.Children.Add(variable);
continue;
}
Colour colour;
if (Colour.TryParse(expression, remainingWords, out colour))
{
expression.Children.Add(colour);
continue;
}
Units unit;
if (Units.TryParse(expression, remainingWords, out unit))
{
expression.Children.Add(unit);
continue;
}
MethodCall methodCall;
if (MethodCall.TryParse(expression, remainingWords, out methodCall))
{
expression.Children.Add(methodCall);
continue;
}
if (remainingWords.Count > 0)
{
var namedValue = new NamedValue(expression) { Text = remainingWords.Dequeue().Text };
expression.Children.Add(namedValue);
}
}
return true;
}