public object EvaluateAccessor(BoundAccessor boundAccessor)
{
object evaluateItem = EvaluateExpression(boundAccessor.Item);
if (boundAccessor.Index != null && evaluateItem is IndexableObject indexableObj)
{
evaluateItem = indexableObj.Index(EvaluateExpression(boundAccessor.Index));
}
if (!boundAccessor.IsLast)
{
if (evaluateItem != null && evaluateItem is ScopedObject scopedObj)
{
locals.Push(scopedObj.Variables);
var output = EvaluateExpression(boundAccessor.Rest);
locals.Pop();
return(output);
}
return(null);
}
return(evaluateItem);
}
private void OutputAccessor(BoundAccessor node, string prefix)
{
builder.AddFragment(new OutputFragment(prefix, DefaultColour));
Output(node.Item, string.Empty);
if (!node.IsLast)
{
builder.AddFragment(new OutputFragment(".", DefaultColour));
Output(node.Rest, string.Empty);
}
}
private BoundExpression RewriteAccessor(BoundAccessor expression)
{
var newItem = RewriteExpression(expression.Item);
var newIndex = expression.Index == null ? null : RewriteExpression(expression.Index);
var newRest = expression.Rest == null ? null : (BoundAccessor)RewriteExpression(expression.Rest);
if (newItem == expression.Item && newIndex == expression.Index && newRest == expression.Rest)
{
return(expression);
}
return(new BoundAccessor(newItem, newIndex, newRest));
}
