/**
* Scans a literal (any character inside single or double quotes.
*
* @return Token
*/
private function scanLiteral()
{
$pos = $this->createPosition();
$start = $this->currentCharacter();
$str = $start;
while ($this->hasNextCharacter()) {
$this->nextCharacter();
$str .= $this->currentCharacter();
// Ensure that a lieral opened with " is not temrinated by ' and vice versa.
if (ScannerHelper::isQuote($this->currentCharacter()) && $this->currentCharacter() === $start) {
break;
}
}
return new Token(Token::LITERAL, $str, $pos);
}
public function testIsEquals()
{
$this->assertTrue(ScannerHelper::isEquals("-", array("-", "_")));
$this->assertTrue(ScannerHelper::isEquals("_", array("-", "_")));
$this->assertFalse(ScannerHelper::isEquals("a", array("-", "_")));
}
/**
* Checks if a passes string is encapsulated in quotes and removes them.
* Also unescape inside quotes.
*
* @param string $str The string to unquote.
*
* @return string
*/
public static function unquoteString($str)
{
$start = 0;
$length = strlen($str) - 1;
if (ScannerHelper::isQuote($str[$start])) {
$start++;
}
if (ScannerHelper::isQuote($str[$length])) {
$length--;
}
$str = substr($str, $start, $length);
return stripcslashes($str);
}
