public void Parse(Stream stream)
{
sw = new StreamWriter(stream);
la = new Token();
la.val = "";
Get();
Rules();
sw.Flush();
}
public void Init(Stream s)
{
buffer = new Buffer();
buffer.Fill(s);
pos = -1; line = 1; lineStart = 0;
oldEols = 0;
NextCh();
ignore = new BitArray(charSetSize + 1);
ignore[9] = true; ignore[10] = true; ignore[13] = true; ignore[32] = true;
//--- AW: fill token list
tokens = new Token(); // first token is a dummy
Token node = tokens;
do {
node.next = NextToken();
node = node.next;
} while (node.kind != eofSym); /* AW: 0 == EOF */
node.next = node;
node.val = "EOF";
t = pt = tokens;
}
/* AW 2003-03-07 get the next token, ignore pragmas */
public Token Peek()
{
do { // skip pragmas while peeking
pt = pt.next;
} while (pt.kind > maxT);
return pt;
}
/* AW Scan() renamed to NextToken() */
private Token NextToken()
{
while (ignore[ch]) NextCh();
if (ch == '/' && Comment0()) return NextToken();
t = new Token();
t.pos = pos; t.col = pos - lineStart + 1; t.line = line;
int state = start[ch];
StringBuilder buf = new StringBuilder(16);
buf.Append(ch); NextCh();
switch (state)
{
case -1: { t.kind = eofSym; goto done; } // NextCh already done /* pdt */
case 0: { t.kind = noSym; goto done; } // NextCh already done
case 1:
{t.kind = 1; goto done;}
case 2:
{t.kind = 2; goto done;}
case 3:
{t.kind = 3; goto done;}
case 4:
if (ch == '>') {buf.Append(ch); NextCh(); goto case 5;}
else {t.kind = noSym; goto done;}
case 5:
{t.kind = 4; goto done;}
case 6:
{t.kind = 5; goto done;}
case 7:
{t.kind = 6; goto done;}
case 8:
{t.kind = 7; goto done;}
case 9:
if ((ch >= '*' && ch <= '+' || ch >= '-' && ch <= ':' || ch >= 'A' && ch <= 'Z' || ch == 92 || ch == '_' || ch >= 'a' && ch <= 'z')) {buf.Append(ch); NextCh(); goto case 9;}
else {t.kind = 8; goto done;}
case 10:
{t.kind = 9; goto done;}
case 11:
{t.kind = 10; goto done;}
case 12:
if ((ch >= 'A' && ch <= 'Z' || ch == '_' || ch >= 'a' && ch <= 'z')) {buf.Append(ch); NextCh(); goto case 13;}
else {t.kind = noSym; goto done;}
case 13:
if ((ch >= 'A' && ch <= 'Z' || ch == '_' || ch >= 'a' && ch <= 'z')) {buf.Append(ch); NextCh(); goto case 13;}
else {t.kind = 17; goto done;}
case 14:
{t.kind = 11; goto done;}
case 15:
{t.kind = 12; goto done;}
case 16:
{t.kind = 13; goto done;}
case 17:
{t.kind = 14; goto done;}
case 18:
{t.kind = 15; goto done;}
}
done:
t.val = buf.ToString();
return t;
}
/* AW 2003-03-07 get the next token, move on and synch peek token with current */
public Token Scan()
{
t = pt = t.next;
return t;
}
/* AW 2003-03-11 to make sure peek start at current scan position */
public void ResetPeek()
{
pt = t;
}
private void Get()
{
for (;;)
{
t = la;
la = scanner.Scan();
if (la.kind <= maxT) { ++errDist; break; }
if (la.kind == 17)
{
if (la.val.Equals("#DIRECTION_FORWARD")) direction = "forward";
else if (la.val.Equals("#DIRECTION_BACKWARD")) direction = "backward";
else if (la.val.Equals("#DIRECTION_BIDIRECTIONAL")) direction = "bidirectional";
else errors.Error(t.line, t.col, "unknown pragma :" + la.val);
}
la = t;
}
}
