Пример #1
0
  /**
   * Refills the input buffer.
   *
   * @return <code>false</code>, iff there was new input.
   * @exception IOException if any I/O-Error occurs
   */
  private boolean yy_refill() throws java.io.IOException {

    /* first: make room (if you can) */
    if (yy_startRead > 0) {
      System.arraycopy(yy_buffer, yy_startRead, yy_buffer, 0, yy_endRead - yy_startRead);

      /* translate stored positions */
      yy_endRead -= yy_startRead;
      yy_currentPos -= yy_startRead;
      yy_markedPos -= yy_startRead;
      yy_pushbackPos -= yy_startRead;
      yy_startRead = 0;
    }

    /* is the buffer big enough? */
    if (yy_currentPos >= yy_buffer.length) {
      /* if not: blow it up */
      char newBuffer[] = new char[yy_currentPos * 2];
      System.arraycopy(yy_buffer, 0, newBuffer, 0, yy_buffer.length);
      yy_buffer = newBuffer;
    }

    /* finally: fill the buffer with new input */
    int numRead = yy_reader.read(yy_buffer, yy_endRead, yy_buffer.length - yy_endRead);

    if (numRead < 0) {
      return true;
    } else {
      yy_endRead += numRead;
      return false;
    }
  }
  /**
   * Refills the input buffer.
   *
   * @return <code>false</code>, iff there was new input.
   * @exception java.io.IOException if any I/O-Error occurs
   */
  private boolean zzRefill() throws java.io.IOException {

    /* first: make room (if you can) */
    if (zzStartRead > 0) {
      System.arraycopy(zzBuffer, zzStartRead, zzBuffer, 0, zzEndRead - zzStartRead);

      /* translate stored positions */
      zzEndRead -= zzStartRead;
      zzCurrentPos -= zzStartRead;
      zzMarkedPos -= zzStartRead;
      zzPushbackPos -= zzStartRead;
      zzStartRead = 0;
    }

    /* is the buffer big enough? */
    if (zzCurrentPos >= zzBuffer.length) {
      /* if not: blow it up */
      char newBuffer[] = new char[zzCurrentPos * 2];
      System.arraycopy(zzBuffer, 0, newBuffer, 0, zzBuffer.length);
      zzBuffer = newBuffer;
    }

    /* finally: fill the buffer with new input */
    int numRead = zzReader.read(zzBuffer, zzEndRead, zzBuffer.length - zzEndRead);

    if (numRead < 0) {
      return true;
    } else {
      zzEndRead += numRead;
      return false;
    }
  }
Пример #3
0
  /**
   * Refills the input buffer.
   *
   * @return <code>false</code>, iff there was new input.
   * @exception java.io.IOException if any I/O-Error occurs
   */
  private boolean zzRefill() throws java.io.IOException {

    /* first: make room (if you can) */
    if (zzStartRead > 0) {
      zzEndRead += zzFinalHighSurrogate;
      zzFinalHighSurrogate = 0;
      System.arraycopy(zzBuffer, zzStartRead, zzBuffer, 0, zzEndRead - zzStartRead);

      /* translate stored positions */
      zzEndRead -= zzStartRead;
      zzCurrentPos -= zzStartRead;
      zzMarkedPos -= zzStartRead;
      zzStartRead = 0;
    }

    /* is the buffer big enough? */
    if (zzCurrentPos >= zzBuffer.length - zzFinalHighSurrogate) {
      /* if not: blow it up */
      char newBuffer[] = new char[zzBuffer.length * 2];
      System.arraycopy(zzBuffer, 0, newBuffer, 0, zzBuffer.length);
      zzBuffer = newBuffer;
      zzEndRead += zzFinalHighSurrogate;
      zzFinalHighSurrogate = 0;
    }

    /* fill the buffer with new input */
    int requested = zzBuffer.length - zzEndRead;
    int totalRead = 0;
    while (totalRead < requested) {
      int numRead = zzReader.read(zzBuffer, zzEndRead + totalRead, requested - totalRead);
      if (numRead == -1) {
        break;
      }
      totalRead += numRead;
    }

    if (totalRead > 0) {
      zzEndRead += totalRead;
      if (totalRead == requested) {
          /* possibly more input available */
        if (Character.isHighSurrogate(zzBuffer[zzEndRead - 1])) {
          --zzEndRead;
          zzFinalHighSurrogate = 1;
        }
      }
      return false;
    }

    // totalRead = 0: End of stream
    return true;
  }
Пример #4
0
  /**
   * Refills the input buffer.
   *
   * @return <code>false</code>, iff there was new input.
   * @exception java.io.IOException if any I/O-Error occurs
   */
  private boolean zzRefill() throws java.io.IOException {

    /* first: make room (if you can) */
    if (zzStartRead > 0) {
      System.arraycopy(zzBuffer, zzStartRead, zzBuffer, 0, zzEndRead - zzStartRead);

      /* translate stored positions */
      zzEndRead -= zzStartRead;
      zzCurrentPos -= zzStartRead;
      zzMarkedPos -= zzStartRead;
      zzStartRead = 0;
    }

    /* is the buffer big enough? */
    if (zzCurrentPos >= zzBuffer.length) {
      /* if not: blow it up */
      char newBuffer[] = new char[zzCurrentPos * 2];
      System.arraycopy(zzBuffer, 0, newBuffer, 0, zzBuffer.length);
      zzBuffer = newBuffer;
    }

    /* finally: fill the buffer with new input */
    int numRead = zzReader.read(zzBuffer, zzEndRead, zzBuffer.length - zzEndRead);

    if (numRead > 0) {
      zzEndRead += numRead;
      return false;
    }
    // unlikely but not impossible: read 0 characters, but not at end of stream
    if (numRead == 0) {
      int c = zzReader.read();
      if (c == -1) {
        return true;
      } else {
        zzBuffer[zzEndRead++] = (char) c;
        return false;
      }
    }

    // numRead < 0
    return true;
  }
Пример #5
0
 private void chars_expand() {
   char temp[] = new char[chars_size * 2];
   System.arraycopy(chars, 0, temp, 0, chars_size);
   chars_size *= 2;
   chars = temp;
 }