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 (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(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);
}
}
protected bool TranslateCallSiteConstruction(ILCondition condition, out JSStatement result)
{
var cond = condition.Condition;
if (
(cond.Code == ILCode.LogicNot) &&
(cond.Arguments.Count > 0) &&
(cond.Arguments[0].Code == ILCode.GetCallSite) &&
(condition.TrueBlock != null) &&
(condition.TrueBlock.Body.Count == 1) &&
(condition.TrueBlock.Body[0] is ILExpression)
) {
var callSiteExpression = (ILExpression)condition.TrueBlock.Body[0];
var callSiteType = callSiteExpression.Arguments[0].ExpectedType;
var binderExpression = callSiteExpression.Arguments[0].Arguments[0];
var binderMethod = (MethodReference)binderExpression.Operand;
var arguments = Translate(binderExpression.Arguments);
var targetType = ((IGenericInstance)callSiteType).GenericArguments[0];
DynamicCallSites.InitializeCallSite(
(FieldReference)cond.Arguments[0].Operand,
binderMethod.Name,
targetType,
arguments
);
result = new JSNullStatement();
return true;
}
result = null;
return false;
}