/**
* Searches for matching token patterns at the start of the
* input stream. If a match is found, the token match object
* is updated.
*
* @param buffer the input buffer to check
* @param match the token match to update
*
* @throws IOException if an I/O error occurred
*/
public override void Match(ReaderBuffer buffer, TokenMatch match)
{
TokenPattern res = automaton.Match(buffer, ignoreCase);
if (res != null)
{
match.Update(res.Pattern.Length, res);
}
}
/**
* Searches for matching token patterns at the start of the
* input stream. If a match is found, the token match object
* is updated.
*
* @param buffer the input buffer to check
* @param match the token match to update
*
* @throws IOException if an I/O error occurred
*/
public override void Match(ReaderBuffer buffer, TokenMatch match)
{
for (int i = 0; i < regExps.Length; i++)
{
int length = regExps[i].Match(buffer);
if (length > 0)
{
match.Update(length, patterns[i]);
}
}
}
/// <summary>
/// Checks if this NFA matches the specified input text. The
/// matching will be performed from position zero (0) in the
/// buffer. This method will not read any characters from the
/// stream, just peek ahead.
/// </summary>
/// <param name="buffer">The input buffer to check</param>
/// <param name="match">The token match to update</param>
/// <returns>The number of characters matched</returns>
/// <exception cref="System.IO.IOException">
/// If an I/O error occurred
/// </exception>
public int Match(ReaderBuffer buffer, TokenMatch match)
{
int length = 0;
int pos = 1;
int peekChar;
NFAState state;
// The first step of the match loop has been unrolled and
// optimized for performance below.
this.queue.Clear();
peekChar = buffer.Peek(0);
if (peekChar >= 0 && peekChar < 128)
{
state = this.initialChar[peekChar];
if (state != null)
{
this.queue.AddLast(state);
}
}
if (peekChar >= 0)
{
this.initial.MatchTransitions((char)peekChar, this.queue, true);
}
this.queue.MarkEnd();
peekChar = buffer.Peek(1);
// The remaining match loop processes all subsequent states
while (!this.queue.Empty)
{
if (this.queue.Marked)
{
pos++;
peekChar = buffer.Peek(pos);
this.queue.MarkEnd();
}
state = this.queue.RemoveFirst();
if (state.Value != null)
{
match.Update(pos, state.Value);
}
if (peekChar >= 0)
{
state.MatchTransitions((char)peekChar, this.queue, false);
}
}
return(length);
}
/**
* Checks if this NFA matches the specified input text. The
* matching will be performed from position zero (0) in the
* buffer. This method will not read any characters from the
* stream, just peek ahead.
*
* @param buffer the input buffer to check
* @param match the token match to update
*
* @return the number of characters matched, or
* zero (0) if no match was found
*
* @throws IOException if an I/O error occurred
*/
public int Match(ReaderBuffer buffer, TokenMatch match)
{
int length = 0;
int pos = 1;
int peekChar;
NFAState state;
// The first step of the match loop has been unrolled and
// optimized for performance below.
this.queue.Clear();
peekChar = buffer.Peek(0);
if (0 <= peekChar && peekChar < 128) {
state = this.initialChar[peekChar];
if (state != null) {
this.queue.AddLast(state);
}
}
if (peekChar >= 0) {
this.initial.MatchTransitions((char) peekChar, this.queue, true);
}
this.queue.MarkEnd();
peekChar = buffer.Peek(1);
// The remaining match loop processes all subsequent states
while (!this.queue.Empty) {
if (this.queue.Marked) {
pos++;
peekChar = buffer.Peek(pos);
this.queue.MarkEnd();
}
state = this.queue.RemoveFirst();
if (state.value != null) {
match.Update(pos, state.value);
}
if (peekChar >= 0) {
state.MatchTransitions((char) peekChar, this.queue, false);
}
}
return length;
}
/**
* Searches for matching token patterns at the start of the
* input stream. If a match is found, the token match object
* is updated.
*
* @param buffer the input buffer to check
* @param match the token match to update
*
* @throws IOException if an I/O error occurred
*/
public override void Match(ReaderBuffer buffer, TokenMatch match) {
for (int i = 0; i < regExps.Length; i++) {
int length = regExps[i].Match(buffer);
if (length > 0) {
match.Update(length, patterns[i]);
}
}
}
/**
* Searches for matching token patterns at the start of the
* input stream. If a match is found, the token match object
* is updated.
*
* @param buffer the input buffer to check
* @param match the token match to update
*
* @throws IOException if an I/O error occurred
*/
public override void Match(ReaderBuffer buffer, TokenMatch match) {
TokenPattern res = automaton.Match(buffer, ignoreCase);
if (res != null) {
match.Update(res.Pattern.Length, res);
}
}
