How to use

getChar

method

in

org.matheclipse.parser.client.Scanner

/**
 * Parse a Java <code>string</code> from the digits <code>0,1,2,3,4,5,6,7,8,9</code>.
 * 
 * @return
 */
protected String getIntegerString() {
  int startPosition = fCurrentPosition - 1;
  getChar();
  while (Character.isDigit(fCurrentChar)) {
    getChar();
  }
  int endPosition = fCurrentPosition--;
  return new String(fInputString, startPosition, (--endPosition) - startPosition);
}

getChar();
if (firstCh == '0') {
  switch (fCurrentChar) {
    numFormat = 2;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'B': // binary format
    numFormat = 2;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'o': // octal format
    numFormat = 8;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'O': // octal format
    numFormat = 8;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'x': // hexadecimal format
    numFormat = 16;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'X': // hexadecimal format

getChar();
if ( firstCh == '0' ) {
  switch ( fCurrentChar ) {
    numFormat = 2;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'B': // binary format
    numFormat = 2;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'o': // octal format
    numFormat = 8;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'O': // octal format
    numFormat = 8;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'x': // hexadecimal format
    numFormat = 16;
    startPosition = fCurrentPosition;
    getChar();
    break;
  case 'X': // hexadecimal format

protected String getIdentifier() {
  final int startPosition = fCurrentPosition - 1;
  getChar();
  if (fCurrentChar == '$') {
    getChar();
  }
  while (((fCurrentChar >= 'a') && (fCurrentChar <= 'z')) || ((fCurrentChar >= 'A') && (fCurrentChar <= 'Z'))
      || ((fCurrentChar >= '0') && (fCurrentChar <= '9'))) {
    getChar();
  }
  int endPosition = fCurrentPosition--;
  final int length = (--endPosition) - startPosition;
  if (length == 1) {
    return optimizedCurrentTokenSource1(startPosition, endPosition);
  }
  if (length == 2 && fInputString.charAt(startPosition) == '$') {
    return optimizedCurrentTokenSource2(startPosition, endPosition);
  }
  return fInputString.substring(startPosition, endPosition);
}

/**
 * Gets the identifier.
 * 
 * @return the identifier
 */
protected String getIdentifier() {
  final int startPosition = fCurrentPosition - 1;
  getChar();
  if ( fCurrentChar == '$' ) {
    getChar();
  }
  while ( ((fCurrentChar >= 'a') && (fCurrentChar <= 'z')) || ((fCurrentChar >= 'A') && (fCurrentChar <= 'Z')) || ((fCurrentChar >= '0') && (fCurrentChar <= '9')) ) {
    getChar();
  }
  int endPosition = fCurrentPosition--;
  final int length = (--endPosition) - startPosition;
  if ( length == 1 ) {
    return optimizedCurrentTokenSource1( startPosition, endPosition );
  }
  if ( length == 2 && fInputString.charAt( startPosition ) == '$' ) {
    return optimizedCurrentTokenSource2( startPosition, endPosition );
  }
  return fInputString.substring( startPosition, endPosition );
}

getChar();
if (fExplicitTimes) {
  if (firstCh == '0') {
      numFormat = 2;
      startPosition = fCurrentPosition;
      getChar();
      break;
    case 'B': // binary format
      numFormat = 2;
      startPosition = fCurrentPosition;
      getChar();
      break;
    case 'o': // octal format
      numFormat = 8;
      startPosition = fCurrentPosition;
      getChar();
      break;
    case 'O': // octal format
      numFormat = 8;
      startPosition = fCurrentPosition;
      getChar();
      break;
    case 'x': // hexadecimal format
      numFormat = 16;
      startPosition = fCurrentPosition;
      getChar();
      break;
    case 'X': // hexadecimal format

protected StringBuffer getStringBuffer() throws SyntaxError {
  final StringBuffer ident = new StringBuffer();
  getChar();
      getChar();
      getChar();
    } else {
      getChar();

int startPosition = fCurrentPosition - 1;
getChar();
if (fCurrentChar == '$') {
  getChar();
  getChar();
    contextIndex = fCurrentPosition - 1;
  getChar();

final StringBuffer ident = new StringBuffer();
getChar();
    getChar();
    getChar();
    getChar();

  lastOperatorPosition = fCurrentPosition;
getChar();
while ( fFactory.getOperatorCharacters().indexOf( fCurrentChar ) >= 0 ) {
  fOperatorString = fInputString.substring( startPosition, fCurrentPosition );
    lastOperatorPosition = fCurrentPosition;
  getChar();

  lastOperatorPosition = fCurrentPosition;
getChar();
while (fFactory.getOperatorCharacters().indexOf(fCurrentChar) >= 0) {
  fOperatorString = fInputString.substring(startPosition, fCurrentPosition);
    lastOperatorPosition = fCurrentPosition;
  getChar();