protected internal override ExpressionSlim VisitLoop(LoopExpressionSlim node)
{
var count = 0;
Append("Loop(");
DoLabel(node.ContinueLabel);
DoExpr(node.Body);
DoLabel(node.BreakLabel);
Append(')');
return(node);
void DoLabel(LabelTargetSlim target)
{
if (target != null)
{
if (count > 0)
{
Append(", ");
}
VisitLabelTarget(target);
count++;
}
}
void DoExpr(ExpressionSlim expr)
{
if (count > 0)
{
Append(", ");
}
Visit(expr);
count++;
}
}
/// <summary>
/// Visits a loop expression slim tree node, produces a loop expression.
/// </summary>
/// <param name="node">Node to visit.</param>
/// <param name="body">Body expression.</param>
/// <param name="breakLabel">Break label.</param>
/// <param name="continueLabel">Continue label.</param>
/// <returns>The loop expression represented by the expression slim node.</returns>
protected override Expression MakeLoop(LoopExpressionSlim node, Expression body, LabelTarget breakLabel, LabelTarget continueLabel)
{
return(_factory.Loop(body, breakLabel, continueLabel));
}
/// <summary>
/// Visits a loop expression tree node.
/// </summary>
/// <param name="node">Node to visit.</param>
/// <returns>Result of visiting the node.</returns>
protected internal virtual ExpressionSlim VisitLoop(LoopExpressionSlim node)
{
return(node.Update(VisitIfNotNull(node.BreakLabel, VisitLabelTarget), VisitIfNotNull(node.ContinueLabel, VisitLabelTarget), Visit(node.Body)));
}