public override void Visit(AmlParser.DefCondRefOf defCondRefOf)
{
// We create a sequence like this:
// jump if node path exists to existsBranch
// (push 0)
// jump to end
// existsBranch:
// (execute RefOf instruction and store to target)
// (push 1)
// end:
// The only SuperName that can fail to exist is a node path
if (defCondRefOf.superName.Tag == SuperName.TagValue.SimpleName &&
defCondRefOf.superName.GetAsSimpleName().Tag == SimpleName.TagValue.NameString)
{
JumpIfNodePathExists existsJump = new JumpIfNodePathExists(
defCondRefOf.superName.GetAsSimpleName().GetAsNameString().nodePath);
result.Add(existsJump);
result.Add(new PushConst(new Integer(0)));
Jump jumpOverExistsBranch = new Jump();
result.Add(jumpOverExistsBranch);
existsJump.ThenTarget = result.Count;
defCondRefOf.target.Accept(this);
defCondRefOf.superName.Accept(this);
result.Add(new RefOf());
result.Add(new Store());
result.Add(new Discard());
result.Add(new PushConst(new Integer(1)));
jumpOverExistsBranch.Target = result.Count;
}
else
{
defCondRefOf.target.Accept(this);
defCondRefOf.superName.Accept(this);
result.Add(new RefOf());
result.Add(new Store());
result.Add(new Discard());
result.Add(new PushConst(new Integer(1)));
}
}
public virtual void Visit(AmlParser.DefCondRefOf defCondRefOf)
{
UnhandledNodeType("DefCondRefOf");
}
