public override ASTN VisitCase([NotNull] CaseContext context)
{
CaseNode node = new CaseNode(context)
{
CaseBase = VisitExpr(context.case_expr) as ExprNode
};
var list = context.expr().Skip(1);
var zip = list.Zip(context.formal(), (x, y) => (x, y));
foreach (var(expr, formal) in zip)
{
node.Branchs.Add((VisitFormal(formal) as FormalNode, VisitExpr(expr) as ExprNode));
}
return(node);
}
