void NextStatement(ref StatementNode node)
{
ExpressionNode varExpr = null;
Expect(41);
NumericVariable(ref varExpr);
var nnode = new NextStatementNode(varExpr);
prog.PopNext(ref nnode);
node = nnode;
}
public bool PopNext(ref NextStatementNode next)
{
if (openFors.Count == 0)
{
parser.SemErr("NEXT without FOR");
return(false);
}
var forNode = openFors.Pop();
if (next.Var == null)
{
next = new NextStatementNode(forNode.Var);
}
else if (!forNode.Var.Equals(next.Var))
{
parser.SemErr($"different var names in FOR ({forNode.Var.Name}) and NEXT ({next.Var.Name})");
return(false);
}
next.For = forNode;
forNode.nextNode = next;
return(true);
}
