comparison vendor/symfony/yaml/Inline.php @ 4:a9cd425dd02b

Update, including to Drupal core 8.6.10

  * file that was distributed with this source code.
  */
 
 namespace Symfony\Component\Yaml;
 
+use Symfony\Component\Yaml\Exception\DumpException;
 use Symfony\Component\Yaml\Exception\ParseException;
-use Symfony\Component\Yaml\Exception\DumpException;
 use Symfony\Component\Yaml\Tag\TaggedValue;
 
 /**
  * Inline implements a YAML parser/dumper for the YAML inline syntax.
  *

      *
      * @return mixed A PHP value
      *
      * @throws ParseException
      */
-    public static function parse($value, $flags = 0, $references = array())
-    {
-        if (is_bool($flags)) {
+    public static function parse($value, $flags = 0, $references = [])
+    {
+        if (\is_bool($flags)) {
             @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE;
             } else {
                 $flags = 0;
             }
         }
 
-        if (func_num_args() >= 3 && !is_array($references)) {
+        if (\func_num_args() >= 3 && !\is_array($references)) {
             @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if ($references) {
                 $flags |= Yaml::PARSE_OBJECT;
             }
 
-            if (func_num_args() >= 4) {
+            if (\func_num_args() >= 4) {
                 @trigger_error('Passing a boolean flag to toggle object for map support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::PARSE_OBJECT_FOR_MAP flag instead.', E_USER_DEPRECATED);
 
                 if (func_get_arg(3)) {
                     $flags |= Yaml::PARSE_OBJECT_FOR_MAP;
                 }
             }
 
-            if (func_num_args() >= 5) {
+            if (\func_num_args() >= 5) {
                 $references = func_get_arg(4);
             } else {
-                $references = array();
+                $references = [];
             }
         }
 
         self::initialize($flags);
 

         if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
             $mbEncoding = mb_internal_encoding();
             mb_internal_encoding('ASCII');
         }
 
-        $i = 0;
-        $tag = self::parseTag($value, $i, $flags);
-        switch ($value[$i]) {
-            case '[':
-                $result = self::parseSequence($value, $flags, $i, $references);
-                ++$i;
-                break;
-            case '{':
-                $result = self::parseMapping($value, $flags, $i, $references);
-                ++$i;
-                break;
-            default:
-                $result = self::parseScalar($value, $flags, null, $i, null === $tag, $references);
-        }
-
-        if (null !== $tag) {
-            return new TaggedValue($tag, $result);
-        }
-
-        // some comments are allowed at the end
-        if (preg_replace('/\s+#.*$/A', '', substr($value, $i))) {
-            throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
-        }
-
-        if (isset($mbEncoding)) {
-            mb_internal_encoding($mbEncoding);
-        }
-
-        return $result;
+        try {
+            $i = 0;
+            $tag = self::parseTag($value, $i, $flags);
+            switch ($value[$i]) {
+                case '[':
+                    $result = self::parseSequence($value, $flags, $i, $references);
+                    ++$i;
+                    break;
+                case '{':
+                    $result = self::parseMapping($value, $flags, $i, $references);
+                    ++$i;
+                    break;
+                default:
+                    $result = self::parseScalar($value, $flags, null, $i, null === $tag, $references);
+            }
+
+            if (null !== $tag) {
+                return new TaggedValue($tag, $result);
+            }
+
+            // some comments are allowed at the end
+            if (preg_replace('/\s+#.*$/A', '', substr($value, $i))) {
+                throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
+            }
+
+            return $result;
+        } finally {
+            if (isset($mbEncoding)) {
+                mb_internal_encoding($mbEncoding);
+            }
+        }
     }
 
     /**
      * Dumps a given PHP variable to a YAML string.
      *

      *
      * @throws DumpException When trying to dump PHP resource
      */
     public static function dump($value, $flags = 0)
     {
-        if (is_bool($flags)) {
+        if (\is_bool($flags)) {
             @trigger_error('Passing a boolean flag to toggle exception handling is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', E_USER_DEPRECATED);
 
             if ($flags) {
                 $flags = Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE;
             } else {
                 $flags = 0;
             }
         }
 
-        if (func_num_args() >= 3) {
+        if (\func_num_args() >= 3) {
             @trigger_error('Passing a boolean flag to toggle object support is deprecated since Symfony 3.1 and will be removed in 4.0. Use the Yaml::DUMP_OBJECT flag instead.', E_USER_DEPRECATED);
 
             if (func_get_arg(2)) {
                 $flags |= Yaml::DUMP_OBJECT;
             }
         }
 
         switch (true) {
-            case is_resource($value):
+            case \is_resource($value):
                 if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
                     throw new DumpException(sprintf('Unable to dump PHP resources in a YAML file ("%s").', get_resource_type($value)));
                 }
 
                 return 'null';
             case $value instanceof \DateTimeInterface:
                 return $value->format('c');
-            case is_object($value):
+            case \is_object($value):
                 if ($value instanceof TaggedValue) {
                     return '!'.$value->getTag().' '.self::dump($value->getValue(), $flags);
                 }
 
                 if (Yaml::DUMP_OBJECT & $flags) {

                 if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
                     throw new DumpException('Object support when dumping a YAML file has been disabled.');
                 }
 
                 return 'null';
-            case is_array($value):
+            case \is_array($value):
                 return self::dumpArray($value, $flags);
             case null === $value:
                 return 'null';
             case true === $value:
                 return 'true';
             case false === $value:
                 return 'false';
             case ctype_digit($value):
-                return is_string($value) ? "'$value'" : (int) $value;
+                return \is_string($value) ? "'$value'" : (int) $value;
             case is_numeric($value):
                 $locale = setlocale(LC_NUMERIC, 0);
                 if (false !== $locale) {
                     setlocale(LC_NUMERIC, 'C');
                 }
-                if (is_float($value)) {
+                if (\is_float($value)) {
                     $repr = (string) $value;
                     if (is_infinite($value)) {
                         $repr = str_ireplace('INF', '.Inf', $repr);
                     } elseif (floor($value) == $value && $repr == $value) {
                         // Preserve float data type since storing a whole number will result in integer value.
                         $repr = '!!float '.$repr;
                     }
                 } else {
-                    $repr = is_string($value) ? "'$value'" : (string) $value;
+                    $repr = \is_string($value) ? "'$value'" : (string) $value;
                 }
                 if (false !== $locale) {
                     setlocale(LC_NUMERIC, $locale);
                 }
 

      */
     private static function dumpArray($value, $flags)
     {
         // array
         if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
-            $output = array();
+            $output = [];
             foreach ($value as $val) {
                 $output[] = self::dump($val, $flags);
             }
 
             return sprintf('[%s]', implode(', ', $output));
         }
 
         // hash
-        $output = array();
+        $output = [];
         foreach ($value as $key => $val) {
             $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
         }
 
         return sprintf('{ %s }', implode(', ', $output));

      *
      * @throws ParseException When malformed inline YAML string is parsed
      *
      * @internal
      */
-    public static function parseScalar($scalar, $flags = 0, $delimiters = null, &$i = 0, $evaluate = true, $references = array(), $legacyOmittedKeySupport = false)
-    {
-        if (in_array($scalar[$i], array('"', "'"))) {
+    public static function parseScalar($scalar, $flags = 0, $delimiters = null, &$i = 0, $evaluate = true, $references = [], $legacyOmittedKeySupport = false)
+    {
+        if (\in_array($scalar[$i], ['"', "'"])) {
             // quoted scalar
             $output = self::parseQuotedScalar($scalar, $i);
 
             if (null !== $delimiters) {
                 $tmp = ltrim(substr($scalar, $i), ' ');
                 if ('' === $tmp) {
-                    throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode($delimiters)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
-                }
-                if (!in_array($tmp[0], $delimiters)) {
+                    throw new ParseException(sprintf('Unexpected end of line, expected one of "%s".', implode('', $delimiters)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
+                }
+                if (!\in_array($tmp[0], $delimiters)) {
                     throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                 }
             }
         } else {
             // "normal" string
             if (!$delimiters) {
                 $output = substr($scalar, $i);
-                $i += strlen($output);
+                $i += \strlen($output);
 
                 // remove comments
                 if (Parser::preg_match('/[ \t]+#/', $output, $match, PREG_OFFSET_CAPTURE)) {
                     $output = substr($output, 0, $match[0][1]);
                 }
             } elseif (Parser::preg_match('/^(.'.($legacyOmittedKeySupport ? '+' : '*').'?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
                 $output = $match[1];
-                $i += strlen($output);
+                $i += \strlen($output);
             } else {
                 throw new ParseException(sprintf('Malformed inline YAML string: %s.', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
             }
 
             // a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)

     {
         if (!Parser::preg_match('/'.self::REGEX_QUOTED_STRING.'/Au', substr($scalar, $i), $match)) {
             throw new ParseException(sprintf('Malformed inline YAML string: %s.', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
         }
 
-        $output = substr($match[0], 1, strlen($match[0]) - 2);
+        $output = substr($match[0], 1, \strlen($match[0]) - 2);
 
         $unescaper = new Unescaper();
         if ('"' == $scalar[$i]) {
             $output = $unescaper->unescapeDoubleQuotedString($output);
         } else {
             $output = $unescaper->unescapeSingleQuotedString($output);
         }
 
-        $i += strlen($match[0]);
+        $i += \strlen($match[0]);
 
         return $output;
     }
 
     /**

      *
      * @return array
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    private static function parseSequence($sequence, $flags, &$i = 0, $references = array())
-    {
-        $output = array();
-        $len = strlen($sequence);
+    private static function parseSequence($sequence, $flags, &$i = 0, $references = [])
+    {
+        $output = [];
+        $len = \strlen($sequence);
         ++$i;
 
         // [foo, bar, ...]
         while ($i < $len) {
             if (']' === $sequence[$i]) {

                 case '{':
                     // nested mapping
                     $value = self::parseMapping($sequence, $flags, $i, $references);
                     break;
                 default:
-                    $isQuoted = in_array($sequence[$i], array('"', "'"));
-                    $value = self::parseScalar($sequence, $flags, array(',', ']'), $i, null === $tag, $references);
+                    $isQuoted = \in_array($sequence[$i], ['"', "'"]);
+                    $value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references);
 
                     // the value can be an array if a reference has been resolved to an array var
-                    if (is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
+                    if (\is_string($value) && !$isQuoted && false !== strpos($value, ': ')) {
                         // embedded mapping?
                         try {
                             $pos = 0;
                             $value = self::parseMapping('{'.$value.'}', $flags, $pos, $references);
                         } catch (\InvalidArgumentException $e) {

      *
      * @return array|\stdClass
      *
      * @throws ParseException When malformed inline YAML string is parsed
      */
-    private static function parseMapping($mapping, $flags, &$i = 0, $references = array())
-    {
-        $output = array();
-        $len = strlen($mapping);
+    private static function parseMapping($mapping, $flags, &$i = 0, $references = [])
+    {
+        $output = [];
+        $len = \strlen($mapping);
         ++$i;
         $allowOverwrite = false;
 
         // {foo: bar, bar:foo, ...}
         while ($i < $len) {

 
                     return $output;
             }
 
             // key
-            $isKeyQuoted = in_array($mapping[$i], array('"', "'"), true);
-            $key = self::parseScalar($mapping, $flags, array(':', ' '), $i, false, array(), true);
+            $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
+            $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, [], true);
 
             if (':' !== $key && false === $i = strpos($mapping, ':', $i)) {
                 break;
             }
 

             }
 
             if (!$isKeyQuoted) {
                 $evaluatedKey = self::evaluateScalar($key, $flags, $references);
 
-                if ('' !== $key && $evaluatedKey !== $key && !is_string($evaluatedKey) && !is_int($evaluatedKey)) {
+                if ('' !== $key && $evaluatedKey !== $key && !\is_string($evaluatedKey) && !\is_int($evaluatedKey)) {
                     @trigger_error(self::getDeprecationMessage('Implicit casting of incompatible mapping keys to strings is deprecated since Symfony 3.3 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0. Quote your evaluable mapping keys instead.'), E_USER_DEPRECATED);
                 }
             }
 
-            if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !in_array($mapping[$i + 1], array(' ', ',', '[', ']', '{', '}'), true))) {
+            if (':' !== $key && !$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}'], true))) {
                 @trigger_error(self::getDeprecationMessage('Using a colon after an unquoted mapping key that is not followed by an indication character (i.e. " ", ",", "[", "]", "{", "}") is deprecated since Symfony 3.2 and will throw a ParseException in 4.0.'), E_USER_DEPRECATED);
             }
 
             if ('<<' === $key) {
                 $allowOverwrite = true;

                         } elseif (isset($output[$key])) {
                             @trigger_error(self::getDeprecationMessage(sprintf('Duplicate key "%s" detected whilst parsing YAML. Silent handling of duplicate mapping keys in YAML is deprecated since Symfony 3.2 and will throw \Symfony\Component\Yaml\Exception\ParseException in 4.0.', $key)), E_USER_DEPRECATED);
                         }
                         break;
                     default:
-                        $value = self::parseScalar($mapping, $flags, array(',', '}'), $i, null === $tag, $references);
+                        $value = self::parseScalar($mapping, $flags, [',', '}'], $i, null === $tag, $references);
                         // Spec: Keys MUST be unique; first one wins.
                         // Parser cannot abort this mapping earlier, since lines
                         // are processed sequentially.
                         // But overwriting is allowed when a merge node is used in current block.
                         if ('<<' === $key) {

      *
      * @return mixed The evaluated YAML string
      *
      * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
      */
-    private static function evaluateScalar($scalar, $flags, $references = array())
+    private static function evaluateScalar($scalar, $flags, $references = [])
     {
         $scalar = trim($scalar);
         $scalarLower = strtolower($scalar);
 
         if (0 === strpos($scalar, '*')) {

                         return;
                     case 0 === strpos($scalar, '!php/const:'):
                         if (self::$constantSupport) {
                             @trigger_error(self::getDeprecationMessage('The !php/const: tag to indicate dumped PHP constants is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/const (without the colon) tag instead.'), E_USER_DEPRECATED);
 
-                            if (defined($const = substr($scalar, 11))) {
-                                return constant($const);
+                            if (\defined($const = substr($scalar, 11))) {
+                                return \constant($const);
                             }
 
                             throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                         }
                         if (self::$exceptionOnInvalidType) {

 
                         return;
                     case 0 === strpos($scalar, '!php/const'):
                         if (self::$constantSupport) {
                             $i = 0;
-                            if (defined($const = self::parseScalar(substr($scalar, 11), 0, null, $i, false))) {
-                                return constant($const);
+                            if (\defined($const = self::parseScalar(substr($scalar, 11), 0, null, $i, false))) {
+                                return \constant($const);
                             }
 
                             throw new ParseException(sprintf('The constant "%s" is not defined.', $const), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
                         }
                         if (self::$exceptionOnInvalidType) {

                     case Parser::preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
                         if (false !== strpos($scalar, ',')) {
                             @trigger_error(self::getDeprecationMessage('Using the comma as a group separator for floats is deprecated since Symfony 3.2 and will be removed in 4.0.'), E_USER_DEPRECATED);
                         }
 
-                        return (float) str_replace(array(',', '_'), '', $scalar);
+                        return (float) str_replace([',', '_'], '', $scalar);
                     case Parser::preg_match(self::getTimestampRegex(), $scalar):
                         if (Yaml::PARSE_DATETIME & $flags) {
                             // When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
                             return new \DateTime($scalar, new \DateTimeZone('UTC'));
                         }

     /**
      * @param string $value
      * @param int    &$i
      * @param int    $flags
      *
-     * @return null|string
+     * @return string|null
      */
     private static function parseTag($value, &$i, $flags)
     {
         if ('!' !== $value[$i]) {
             return;

 
         $nextOffset = $i + $tagLength + 1;
         $nextOffset += strspn($value, ' ', $nextOffset);
 
         // Is followed by a scalar
-        if ((!isset($value[$nextOffset]) || !in_array($value[$nextOffset], array('[', '{'), true)) && 'tagged' !== $tag) {
+        if ((!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && 'tagged' !== $tag) {
             // Manage non-whitelisted scalars in {@link self::evaluateScalar()}
             return;
         }
 
         // Built-in tags

      */
     public static function evaluateBinaryScalar($scalar)
     {
         $parsedBinaryData = self::parseScalar(preg_replace('/\s/', '', $scalar));
 
-        if (0 !== (strlen($parsedBinaryData) % 4)) {
-            throw new ParseException(sprintf('The normalized base64 encoded data (data without whitespace characters) length must be a multiple of four (%d bytes given).', strlen($parsedBinaryData)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
+        if (0 !== (\strlen($parsedBinaryData) % 4)) {
+            throw new ParseException(sprintf('The normalized base64 encoded data (data without whitespace characters) length must be a multiple of four (%d bytes given).', \strlen($parsedBinaryData)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
         }
 
         if (!Parser::preg_match('#^[A-Z0-9+/]+={0,2}$#i', $parsedBinaryData)) {
             throw new ParseException(sprintf('The base64 encoded data (%s) contains invalid characters.', $parsedBinaryData), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
         }