public override JSValue Evaluate(Context context)
{
JSValue imageValue = null;
int caseIndex = 1;
int lineIndex = Cases[0].index;
if (context._executionMode >= ExecutionMode.Resume)
{
var sdata = context.SuspendData[this] as SuspendData;
imageValue = sdata.imageValue ?? image.Evaluate(context);
caseIndex = sdata.caseIndex;
lineIndex = sdata.lineIndex;
}
else
{
if (context.Debugging)
{
context.raiseDebugger(image);
}
imageValue = image.Evaluate(context);
}
if (context._executionMode == ExecutionMode.Suspend)
{
context.SuspendData[this] = new SuspendData {
caseIndex = 1
};
return(null);
}
for (; caseIndex < Cases.Length; caseIndex++)
{
if (context.Debugging)
{
context.raiseDebugger(Cases[caseIndex].statement);
}
var cseResult = Cases[caseIndex].statement.Evaluate(context);
if (context._executionMode == ExecutionMode.Suspend)
{
context.SuspendData[this] = new SuspendData
{
caseIndex = caseIndex,
imageValue = imageValue
};
return(null);
}
if (StrictEqual.Check(imageValue, cseResult))
{
lineIndex = Cases[caseIndex].index;
caseIndex = Cases.Length;
break;
}
}
for (; lineIndex < Body.Length; lineIndex++)
{
if (Body[lineIndex] == null)
{
continue;
}
context._lastResult = Body[lineIndex].Evaluate(context) ?? context._lastResult;
if (context._executionMode != ExecutionMode.None)
{
if (context._executionMode == ExecutionMode.Break)
{
context._executionMode = ExecutionMode.None;
}
else if (context._executionMode == ExecutionMode.Suspend)
{
context.SuspendData[this] = new SuspendData
{
caseIndex = caseIndex,
imageValue = imageValue,
lineIndex = lineIndex
};
}
return(null);
}
}
return(null);
}
internal protected virtual T Visit(StrictEqual node)
{
return(Visit(node as Expression));
}
protected override EP_VP1 Visit(StrictEqual node)
{
node.Children[1].Visit(this);
node.Children[0].Visit(this);
return(this);
}