protected override AbstractSyntaxTree GenerateCodeForValue(CodeGenContext context, EvaluationIntention purpose)
{
bool so = false;
switch (purpose)
{
case EvaluationIntention.SideEffectsOnly:
so = true;
break;
case EvaluationIntention.Value:
case EvaluationIntention.ValueOrNode:
break;
default:
throw new AssertionFailedException("unexpected evaluation intention" + purpose);
}
var secondChoice = context.CreateLabel();
Pre.GenerateCodeForConditionalBranchWithPrettyPrint(context, secondChoice, false);
Mid.GenerateCodeForValueWithPrettyPrint(context, so ? EvaluationIntention.SideEffectsOnly : EvaluationIntention.Value);
var joinPoint = context.CreateLabel();
context.GenerateUnconditionalBranch(joinPoint);
context.PlaceLabelHere(secondChoice);
Post.GenerateCodeForValueWithPrettyPrint(context, so ? EvaluationIntention.SideEffectsOnly : EvaluationIntention.Value);
context.PlaceLabelHere(joinPoint);
return(null);
}
