override public bool MoveNext()
{
if (iee.MoveNext())
{
System.Console.WriteLine(prefix + "Token: " + iee.Current.tag + (iee.Current.tag != iee.Current.str ? "," + iee.Current.str : ""));
return(true);
}
return(false);
}
public Parser(InputElementEnumerator yylex)
{
this.yylex = yylex;
yylex.MoveNext();
wl = new System.Collections.Queue();
wl.Enqueue(new startState());
wl_next = new System.Collections.Queue();
}
override public bool MoveNext()
{
for (;;)
{
if (!iee.MoveNext())
{
return(false);
}
if (predicate())
{
return(true);
}
}
}
public nonterminalState parse(System.IO.TextWriter err)
{
nonterminalState _current = null;
InputElement cur = yylex.Current;
InputElement prev = null;
while (wl.Count > 0)
{
foreach (state s in wl)
{
s.end = cur.coord;
}
while (wl.Count > 0)
{
state s = (state)wl.Dequeue();
if (s.below != null && s.below.checkRejected())
{
continue;
}
if (s.accepting)
{
System.Diagnostics.Debug.Assert(_current == null);
_current = ((acceptingState)s).root;
}
else
{
s.transitions(wl_next, cur, count);
}
}
if (yylex.MoveNext())
{
count++;
prev = cur;
cur = yylex.Current;
}
System.Collections.Queue tmp = wl;
wl = wl_next;
wl_next = tmp;
}
if (_current == null)
{
err.WriteLine("\"" + prev.coord.file + "\" (" + prev.coord.line + "," + prev.coord.column + "): Syntax error on \"" + prev.str + "\"");
}
return(_current);
}
protected void doLine()
{
if (!tokens.MoveNext())
{
error("incomplete #line");
return;
}
if (tokens.Current.tag != "integer-literal")
{
error("expecting integer");
return;
}
string line = tokens.Current.str;
if (emitting)
{
try {
this.linedelta = System.Convert.ToInt32(line) - iee.Current.coord.line;
} catch (System.OverflowException) {
error("line number too big");
}
}
if (!tokens.MoveNext())
{
return;
}
if (tokens.Current.tag == "<EOF>")
{
return;
}
if (tokens.Current.tag != "string-literal")
{
error("expecting string");
}
file = tokens.Current.str;
}