void ParseRhs(AstNode parent)
{
RhsDef rhsDef = new RhsDef();
ParseRhsItems(rhsDef);
parent.AddChild(rhsDef);
}
void ParseRhsGroupItem(LhsDef parent)
{
RhsDef rhsDef = new RhsDef();
switch (CurrentList[0].Kind)
{
case TokenKind.LongSkinnyArrow:
Advance(); //past (-->)
parent.SuccessRhs = rhsDef;
break;
case TokenKind.NotLongSkinnyArrow:
Advance(); //past (!-->)
parent.FailureRhs = rhsDef;
break;
case TokenKind.LongFatArrow:
Advance(); //past (==>)
parent.TotalSuccessRhs = rhsDef;
break;
case TokenKind.NotLongFatArrow:
Advance(); //past (!==>)
parent.TotalFailureRhs = rhsDef;
break;
default:
throw new Exception();
}
do
{
CreateState(CurrentList);
ParseRhsItem(rhsDef);
PopState();
} while (Advance() && !CurrentList[0].IsArrow);
}
