protected function doScan(Scanner $scanner)
{
$quotechar = $scanner->tokenType();
$ret = false;
$string = "";
while ($token = $scanner->nextToken()) {
if ($token == $quotechar) {
$ret = true;
break;
}
$string .= $scanner->token();
}
if ($string && !$this->discard) {
$scanner->getContext()->pushResult($string);
}
return $ret;
}
function trigger(Scanner $scanner)
{
if ($scanner->tokenType() != Scanner::WORD) {
return false;
}
if (is_null($this->word)) {
return true;
}
return $this->word == $scanner->token();
}
protected function push(Scanner $scanner)
{
$context = $scanner->getContext();
$context->pushResult($scanner->token());
}
}
$char = substr($this->in, $this->pos, 1);
$this->pos++;
return $char;
}
public function getPos()
{
return $this->pos;
}
public function pushBackChar()
{
$this->pos--;
}
public function string()
{
return $this->in;
}
}
/**
* Demo
*/
$context = new Context();
$user_in = "\$input equals '4' or \$input equals 'four'";
$reader = new StringReader($user_in);
$scanner = new Scanner($reader, $context);
while ($scanner->nextToken() != Scanner::EOF) {
// var_dump($scanner->token(), $scanner->char_no(), $scanner->getTypeString());
print $scanner->token();
print "\t{$scanner->char_no()}";
print "\t{$scanner->getTypeString()}\n";
}
function trigger(Scanner $scanner)
{
return $scanner->token() == $this->char;
}
protected function push(Scanner $scan)
{
$scan->getContext()->push($scan->token());
}
