public static string Top(Deck <Token> strVec, load_data.UserType ut, Reserver reserver)
{
if (strVec.empty() || strVec.GetFirst().Value.isComment)
{
if (false == ChkComment(strVec, ut, reserver, 1))
{
return("");
}
}
if (strVec.empty())
{
return("");
}
return(strVec.GetFirst().Value.str);
}
// lookup just one!
public static Pair <bool, Token> LookUp(Deck <Token> strVec, load_data.UserType ut, Reserver reserver)
{
if (!(strVec.size() >= 2 && false == strVec.GetFirst().Value.isComment&& false == strVec.get(1).isComment))
{
if (false == ChkComment(strVec, ut, reserver, 2))
{
return(new Pair <bool, Token>(false, null));
}
}
if (strVec.size() >= 2)
{
return(new Pair <bool, Token>(true, strVec.get(1)));
}
return(new Pair <bool, Token>(false, null));
}
public static bool Pop(Deck <Token> strVec, ref String str, load_data.UserType ut, Reserver reserver)
{
if (strVec.empty() || strVec.GetFirst().Value.isComment)
{
if (false == ChkComment(strVec, ut, reserver, 1))
{
return(false);
}
}
if (strVec.empty())
{
return(false);
}
if (str != null)
{
str = strVec.GetFirst().Value.str;
}
strVec.pop_front();
return(true);
}
public static bool ChkComment(Deck <Token> strVec, load_data.UserType ut, Reserver reserver, int offset)
{
if (strVec.size() < offset)
{
reserver.Functor(strVec);
while (strVec.size() < offset) //
{
reserver.Functor(strVec);
if (
strVec.size() < offset &&
reserver.end()
)
{
return(false);
}
}
}
LinkedListNode <Token> x = strVec.GetFirst();
int count = 0;
do
{
if (x.Value.isComment)
{
ut.PushComment(x.Value.str);
x = strVec.remove(x);
}
else if (count == offset - 1)
{
return(true);
}
else
{
count++;
x = x.Next;
}
if (x == null) // chk
{
reserver.Functor(strVec);
x = strVec.GetFirst();
for (int k = 0; k < count; ++k)
{
x = x.Next;
}
while (strVec.size() < offset) //
{
reserver.Functor(strVec);
if (
strVec.size() < offset &&
reserver.end()
)
{
return(false);
}
}
// chk here?
x = strVec.GetFirst();
for (int k = 0; k < count; ++k)
{
x = x.Next;
}
}
} while (true);
}
