public void VisitNode(JSLabelGroupStatement lgs)
{
var nonNull = (from kvp in lgs.Labels where !kvp.Value.IsNull select kvp.Value).ToArray();
if (nonNull.Length == 0)
{
var theNull = new JSNullStatement();
ParentNode.ReplaceChild(lgs, theNull);
VisitReplacement(theNull);
}
else if (
(nonNull.Length == 1) &&
!nonNull[0].AllChildrenRecursive.OfType <JSGotoExpression>().Any(
(g) => g.TargetLabel == nonNull[0].Label
)
)
{
ParentNode.ReplaceChild(lgs, nonNull[0]);
VisitReplacement(nonNull[0]);
}
else
{
VisitChildren(lgs);
}
}
public void VisitNode(JSLabelGroupStatement lgs)
{
var nonNull = (from kvp in lgs.Labels where !kvp.Value.IsNull select kvp.Value).ToArray();
if (nonNull.Length == 0)
{
var theNull = new JSNullStatement();
ParentNode.ReplaceChild(lgs, theNull);
VisitReplacement(theNull);
}
else if (
(nonNull.Length == 1) &&
!nonNull[0].AllChildrenRecursive.OfType <JSGotoExpression>().Any(
(g) => g.TargetLabel == nonNull[0].Label
)
)
{
var onlyLabel = nonNull[0];
var labelGroupExit = onlyLabel.AllChildrenRecursive.OfType <JSExitLabelGroupExpression>().FirstOrDefault();
if (labelGroupExit != null)
{
/* FIXME: This doesn't work
* var enclosingFunction = Stack.OfType<JSFunctionExpression>().First();
* var loops = enclosingFunction.AllChildrenRecursive.OfType<JSLoopStatement>();
*
* int nextLoopIndex = 0;
* if (loops.Any((l) => true))
* nextLoopIndex = loops.Max((l) => l.Index.GetValueOrDefault(0)) + 1;
*
* var replacement = new JSDoLoop(
* JSLiteral.New(false),
* onlyLabel
* );
* replacement.Index = nextLoopIndex;
*
* var newBreak = new JSBreakExpression();
* newBreak.TargetLoop = nextLoopIndex;
*
* onlyLabel.ReplaceChildRecursive(labelGroupExit, newBreak);
*
* ParentNode.ReplaceChild(lgs, replacement);
* VisitReplacement(replacement);
*/
VisitChildren(lgs);
}
else
{
ParentNode.ReplaceChild(lgs, onlyLabel);
VisitReplacement(onlyLabel);
}
}
else
{
VisitChildren(lgs);
}
}
public void VisitNode(JSBlockStatement bs)
{
RemoveNullStatements(bs);
if ((bs.Statements.Count == 0) && (bs.Label == null))
{
var newNull = new JSNullStatement();
ParentNode.ReplaceChild(bs, newNull);
VisitReplacement(newNull);
return;
}
VisitChildren(bs);
// Some of the children may have replaced themselves with nulls
RemoveNullStatements(bs);
}
public void VisitNode(JSNullStatement ns)
{
Formatter.WriteRaw("(nop)");
}
