Follow-up to symfony#10312: Fixed minor performance related issues in Yaml\Inline.

Author: sun

src/Symfony/Component/Yaml/Inline.php

@@ -220,7 +220,9 @@ public static function parseScalar($scalar, $delimiters = null, $stringDelimiter
  throw new ParseException(sprintf('Malformed inline YAML string (%s).', $scalar));
  }
 
- $output = $evaluate ? self::evaluateScalar($output) : $output;
+ if ($evaluate) {
+ $output = self::evaluateScalar($output);
+ }
  }
 
  return $output;
@@ -388,9 +390,9 @@ private static function evaluateScalar($scalar)
  $scalar = trim($scalar);
  $scalarLower = strtolower($scalar);
  switch (true) {
- case 'null' == $scalarLower:
- case '' == $scalar:
- case '~' == $scalar:
+ case 'null' === $scalarLower:
+ case '' === $scalar:
+ case '~' === $scalar:
  return null;
  case 'true' === $scalarLower:
  return true;
@@ -425,10 +427,10 @@ private static function evaluateScalar($scalar)
  return '0' == $scalar[1] ? octdec($scalar) : (((string) $raw == (string) $cast) ? $cast : $raw);
  case is_numeric($scalar):
  return '0x' == $scalar[0].$scalar[1] ? hexdec($scalar) : floatval($scalar);
- case 0 == strcasecmp($scalar, '.inf'):
- case 0 == strcasecmp($scalar, '.NaN'):
+ case '.inf' === $scalarLower:
+ case '.nan' === $scalarLower:
  return -log(0);
- case 0 == strcasecmp($scalar, '-.inf'):
+ case '-.inf' === $scalarLower:
  return log(0);
  case preg_match('/^(-|\+)?[0-9,]+(\.[0-9]+)?$/', $scalar):
  return floatval(str_replace(',', '', $scalar));