/*Make sure current lookahead symbol matches the given set
* Throw an exception upon mismatch, which is catch by either the
* error handler or by the syntactic predicate.
*/
public virtual void match(AST t, BitSet b)
{
if (t == null || t == ASTNULL || !b.member(t.Type))
{
throw new MismatchedTokenException(getTokenNames(), t, b, false);
}
}
/*Consume tokens until one matches the given token set */
public virtual void consumeUntil(BitSet bset)
{
while (LA(1) != Token.EOF_TYPE && !bset.member(LA(1)))
{
consume();
}
}
/*Consume chars until one matches the given set */
public virtual void consumeUntil(BitSet bset)
{
while (cached_LA1 != EOF_CHAR && !bset.member(cached_LA1))
{
consume();
}
}
public virtual void match(BitSet b)
{
if (!b.member(cached_LA1))
{
throw new MismatchedCharException(cached_LA1, b, false, this);
}
consume();
}
// Expected BitSet / not BitSet
public MismatchedCharException(char c, BitSet set_, bool matchNot, CharScanner scanner_) :
base("Mismatched char", scanner_.getFilename(), scanner_.getLine(), scanner_.getColumn())
{
mismatchType = matchNot ? CharTypeEnum.NotSetType : CharTypeEnum.SetType;
foundChar = c;
bset = set_;
scanner = scanner_;
}
// Expected BitSet / not BitSet
public MismatchedTokenException(string[] tokenNames_, IToken token_, BitSet set_, bool matchNot, string fileName_) :
base("Mismatched Token", fileName_, token_.getLine(), token_.getColumn())
{
tokenNames = tokenNames_;
token = token_;
tokenText = token_.getText();
mismatchType = matchNot ? TokenTypeEnum.NotSetType : TokenTypeEnum.SetType;
bset = set_;
}
/*Make sure current lookahead symbol matches the given set
* Throw an exception upon mismatch, which is catch by either the
* error handler or by the syntactic predicate.
*/
public virtual void match(BitSet b)
{
if (!b.member(LA(1)))
{
throw new MismatchedTokenException(tokenNames, LT(1), b, false, getFilename());
}
else
{
consume();
}
}
// Expected BitSet / not BitSet
public MismatchedTokenException(string[] tokenNames_, AST node_, BitSet set_, bool matchNot) :
base("Mismatched Token", "<AST>", -1, -1)
{
tokenNames = tokenNames_;
node = node_;
if (node_ == null)
{
tokenText = "<empty tree>";
}
else
{
tokenText = node_.ToString();
}
mismatchType = matchNot ? TokenTypeEnum.NotSetType : TokenTypeEnum.SetType;
bset = set_;
}
public TokenStreamHiddenTokenFilter(TokenStream input) : base(input)
{
hideMask = new BitSet();
}
public virtual void hide(BitSet mask)
{
hideMask = mask;
}
public virtual void recover(RecognitionException ex, BitSet tokenSet)
{
consume();
consumeUntil(tokenSet);
}
public virtual void discard(BitSet mask)
{
discardMask = mask;
}
public TokenStreamBasicFilter(TokenStream input)
{
this.input = input;
discardMask = new BitSet();
}