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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace RectorPrefix202410\Symfony\Component\Yaml;
use RectorPrefix202410\Symfony\Component\Yaml\Exception\DumpException;
use RectorPrefix202410\Symfony\Component\Yaml\Exception\ParseException;
use RectorPrefix202410\Symfony\Component\Yaml\Tag\TaggedValue;
/**
* Inline implements a YAML parser/dumper for the YAML inline syntax.
*
* @author Fabien Potencier <[email protected]>
*
* @internal
*/
class Inline
{
public const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
/**
* @var int
*/
public static $parsedLineNumber = -1;
/**
* @var string|null
*/
public static $parsedFilename;
/**
* @var bool
*/
private static $exceptionOnInvalidType = \false;
/**
* @var bool
*/
private static $objectSupport = \false;
/**
* @var bool
*/
private static $objectForMap = \false;
/**
* @var bool
*/
private static $constantSupport = \false;
public static function initialize(int $flags, ?int $parsedLineNumber = null, ?string $parsedFilename = null) : void
{
self::$exceptionOnInvalidType = (bool) (Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE & $flags);
self::$objectSupport = (bool) (Yaml::PARSE_OBJECT & $flags);
self::$objectForMap = (bool) (Yaml::PARSE_OBJECT_FOR_MAP & $flags);
self::$constantSupport = (bool) (Yaml::PARSE_CONSTANT & $flags);
self::$parsedFilename = $parsedFilename;
if (null !== $parsedLineNumber) {
self::$parsedLineNumber = $parsedLineNumber;
}
}
/**
* Converts a YAML string to a PHP value.
*
* @param int $flags A bit field of Yaml::PARSE_* constants to customize the YAML parser behavior
* @param array $references Mapping of variable names to values
*
* @throws ParseException
* @return mixed
*/
public static function parse(string $value, int $flags = 0, array &$references = [])
{
self::initialize($flags);
$value = \trim($value);
if ('' === $value) {
return '';
}
$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, \true, $references);
}
// some comments are allowed at the end
if (\preg_replace('/\\s*#.*$/A', '', \substr($value, $i))) {
throw new ParseException(\sprintf('Unexpected characters near "%s".', \substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
if (null !== $tag && '' !== $tag) {
return new TaggedValue($tag, $result);
}
return $result;
}
/**
* Dumps a given PHP variable to a YAML string.
*
* @param mixed $value The PHP variable to convert
* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
*
* @throws DumpException When trying to dump PHP resource
*/
public static function dump($value, int $flags = 0) : string
{
switch (\true) {
case \is_resource($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 self::dumpNull($flags);
case $value instanceof \DateTimeInterface:
return $value->format((function () use($value) {
switch (\true) {
case !($length = \strlen(\rtrim($value->format('u'), '0'))):
return 'c';
case $length < 4:
return 'Y-m-d\\TH:i:s.vP';
default:
return 'Y-m-d\\TH:i:s.uP';
}
})());
case $value instanceof \UnitEnum:
return \sprintf('!php/enum %s::%s', \get_class($value), $value->name);
case \is_object($value):
if ($value instanceof TaggedValue) {
return '!' . $value->getTag() . ' ' . self::dump($value->getValue(), $flags);
}
if (Yaml::DUMP_OBJECT & $flags) {
return '!php/object ' . self::dump(\serialize($value));
}
if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \stdClass || $value instanceof \ArrayObject)) {
return self::dumpHashArray($value, $flags);
}
if (Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE & $flags) {
throw new DumpException('Object support when dumping a YAML file has been disabled.');
}
return self::dumpNull($flags);
case \is_array($value):
return self::dumpArray($value, $flags);
case null === $value:
return self::dumpNull($flags);
case \true === $value:
return 'true';
case \false === $value:
return 'false';
case \is_int($value):
return $value;
case \is_numeric($value) && \false === \strpbrk($value, "\f\n\r\t\v"):
$locale = \setlocale(\LC_NUMERIC, 0);
if (\false !== $locale) {
\setlocale(\LC_NUMERIC, 'C');
}
if (\is_float($value)) {
$repr = (string) $value;
if (\is_infinite($value)) {
$repr = \str_ireplace('INF', '.Inf', $repr);
} elseif (\floor($value) == $value && $repr == $value) {
// Preserve float data type since storing a whole number will result in integer value.
if (\strpos($repr, 'E') === \false) {
$repr .= '.0';
}
}
} else {
$repr = \is_string($value) ? "'{$value}'" : (string) $value;
}
if (\false !== $locale) {
\setlocale(\LC_NUMERIC, $locale);
}
return $repr;
case '' == $value:
return "''";
case self::isBinaryString($value):
return '!!binary ' . \base64_encode($value);
case Escaper::requiresDoubleQuoting($value):
return Escaper::escapeWithDoubleQuotes($value);
case Escaper::requiresSingleQuoting($value):
$singleQuoted = Escaper::escapeWithSingleQuotes($value);
if (\strpos($value, "'") === \false) {
return $singleQuoted;
}
// Attempt double-quoting the string instead to see if it's more efficient.
$doubleQuoted = Escaper::escapeWithDoubleQuotes($value);
return \strlen($doubleQuoted) < \strlen($singleQuoted) ? $doubleQuoted : $singleQuoted;
case Parser::preg_match('{^[0-9]+[_0-9]*$}', $value):
case Parser::preg_match(self::getHexRegex(), $value):
case Parser::preg_match(self::getTimestampRegex(), $value):
return Escaper::escapeWithSingleQuotes($value);
default:
return $value;
}
}
/**
* Check if given array is hash or just normal indexed array.
* @param mixed[]|\ArrayObject|\stdClass $value
*/
public static function isHash($value) : bool
{
if ($value instanceof \stdClass || $value instanceof \ArrayObject) {
return \true;
}
$expectedKey = 0;
foreach ($value as $key => $val) {
if ($key !== $expectedKey++) {
return \true;
}
}
return \false;
}
/**
* Dumps a PHP array to a YAML string.
*
* @param array $value The PHP array to dump
* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
*/
private static function dumpArray(array $value, int $flags) : string
{
// array
if (($value || Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE & $flags) && !self::isHash($value)) {
$output = [];
foreach ($value as $val) {
$output[] = self::dump($val, $flags);
}
return \sprintf('[%s]', \implode(', ', $output));
}
return self::dumpHashArray($value, $flags);
}
/**
* Dumps hash array to a YAML string.
*
* @param array|\ArrayObject|\stdClass $value The hash array to dump
* @param int $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
*/
private static function dumpHashArray($value, int $flags) : string
{
$output = [];
foreach ($value as $key => $val) {
if (\is_int($key) && Yaml::DUMP_NUMERIC_KEY_AS_STRING & $flags) {
$key = (string) $key;
}
$output[] = \sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
}
return \sprintf('{ %s }', \implode(', ', $output));
}
private static function dumpNull(int $flags) : string
{
if (Yaml::DUMP_NULL_AS_TILDE & $flags) {
return '~';
}
return 'null';
}
/**
* Parses a YAML scalar.
*
* @throws ParseException When malformed inline YAML string is parsed
* @return mixed
*/
public static function parseScalar(string $scalar, int $flags = 0, ?array $delimiters = null, int &$i = 0, bool $evaluate = \true, array &$references = [], ?bool &$isQuoted = null)
{
if (\in_array($scalar[$i], ['"', "'"], \true)) {
// quoted scalar
$isQuoted = \true;
$output = self::parseQuotedScalar($scalar, $i);
if (null !== $delimiters) {
$tmp = \ltrim(\substr($scalar, $i), " \n");
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], $delimiters)) {
throw new ParseException(\sprintf('Unexpected characters (%s).', \substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
}
} else {
// "normal" string
$isQuoted = \false;
if (!$delimiters) {
$output = \substr($scalar, $i);
$i += \strlen($output);
// remove comments
if (Parser::preg_match('/[ \\t]+#/', $output, $match, \PREG_OFFSET_CAPTURE)) {
$output = \substr($output, 0, $match[0][1]);
}
} elseif (Parser::preg_match('/^(.*?)(' . \implode('|', $delimiters) . ')/', \substr($scalar, $i), $match)) {
$output = $match[1];
$i += \strlen($output);
$output = \trim($output);
} else {
throw new ParseException(\sprintf('Malformed inline YAML string: "%s".', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
}
// a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
if ($output && ('@' === $output[0] || '`' === $output[0] || '|' === $output[0] || '>' === $output[0] || '%' === $output[0])) {
throw new ParseException(\sprintf('The reserved indicator "%s" cannot start a plain scalar; you need to quote the scalar.', $output[0]), self::$parsedLineNumber + 1, $output, self::$parsedFilename);
}
if ($evaluate) {
$output = self::evaluateScalar($output, $flags, $references, $isQuoted);
}
}
return $output;
}
/**
* Parses a YAML quoted scalar.
*
* @throws ParseException When malformed inline YAML string is parsed
*/
private static function parseQuotedScalar(string $scalar, int &$i = 0) : string
{
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, -1);
$unescaper = new Unescaper();
if ('"' == $scalar[$i]) {
$output = $unescaper->unescapeDoubleQuotedString($output);
} else {
$output = $unescaper->unescapeSingleQuotedString($output);
}
$i += \strlen($match[0]);
return $output;
}
/**
* Parses a YAML sequence.
*
* @throws ParseException When malformed inline YAML string is parsed
*/
private static function parseSequence(string $sequence, int $flags, int &$i = 0, array &$references = []) : array
{
$output = [];
$len = \strlen($sequence);
++$i;
// [foo, bar, ...]
$lastToken = null;
while ($i < $len) {
if (']' === $sequence[$i]) {
return $output;
}
if (',' === $sequence[$i] || ' ' === $sequence[$i]) {
if (',' === $sequence[$i] && (null === $lastToken || 'separator' === $lastToken)) {
$output[] = null;
} elseif (',' === $sequence[$i]) {
$lastToken = 'separator';
}
++$i;
continue;
}
$tag = self::parseTag($sequence, $i, $flags);
switch ($sequence[$i]) {
case '[':
// nested sequence
$value = self::parseSequence($sequence, $flags, $i, $references);
break;
case '{':
// nested mapping
$value = self::parseMapping($sequence, $flags, $i, $references);
break;
default:
$value = self::parseScalar($sequence, $flags, [',', ']'], $i, null === $tag, $references, $isQuoted);
// the value can be an array if a reference has been resolved to an array var
if (\is_string($value) && !$isQuoted && \strpos($value, ': ') !== \false) {
// embedded mapping?
try {
$pos = 0;
$value = self::parseMapping('{' . $value . '}', $flags, $pos, $references);
} catch (\InvalidArgumentException $exception) {
// no, it's not
}
}
if (!$isQuoted && \is_string($value) && '' !== $value && '&' === $value[0] && Parser::preg_match(Parser::REFERENCE_PATTERN, $value, $matches)) {
$references[$matches['ref']] = $matches['value'];
$value = $matches['value'];
}
--$i;
}
if (null !== $tag && '' !== $tag) {
$value = new TaggedValue($tag, $value);
}
$output[] = $value;
$lastToken = 'value';
++$i;
}
throw new ParseException(\sprintf('Malformed inline YAML string: "%s".', $sequence), self::$parsedLineNumber + 1, null, self::$parsedFilename);
}
/**
* Parses a YAML mapping.
*
* @throws ParseException When malformed inline YAML string is parsed
* @return mixed[]|\stdClass
*/
private static function parseMapping(string $mapping, int $flags, int &$i = 0, array &$references = [])
{
$output = [];
$len = \strlen($mapping);
++$i;
$allowOverwrite = \false;
// {foo: bar, bar:foo, ...}
while ($i < $len) {
switch ($mapping[$i]) {
case ' ':
case ',':
case "\n":
++$i;
continue 2;
case '}':
if (self::$objectForMap) {
return (object) $output;
}
return $output;
}
// key
$offsetBeforeKeyParsing = $i;
$isKeyQuoted = \in_array($mapping[$i], ['"', "'"], \true);
$key = self::parseScalar($mapping, $flags, [':', ' '], $i, \false);
if ($offsetBeforeKeyParsing === $i) {
throw new ParseException('Missing mapping key.', self::$parsedLineNumber + 1, $mapping);
}
if ('!php/const' === $key || '!php/enum' === $key) {
$key .= ' ' . self::parseScalar($mapping, $flags, [':'], $i, \false);
$key = self::evaluateScalar($key, $flags);
}
if (\false === ($i = \strpos($mapping, ':', $i))) {
break;
}
if (!$isKeyQuoted) {
$evaluatedKey = self::evaluateScalar($key, $flags, $references);
if ('' !== $key && $evaluatedKey !== $key && !\is_string($evaluatedKey) && !\is_int($evaluatedKey)) {
throw new ParseException('Implicit casting of incompatible mapping keys to strings is not supported. Quote your evaluable mapping keys instead.', self::$parsedLineNumber + 1, $mapping);
}
}
if (!$isKeyQuoted && (!isset($mapping[$i + 1]) || !\in_array($mapping[$i + 1], [' ', ',', '[', ']', '{', '}', "\n"], \true))) {
throw new ParseException('Colons must be followed by a space or an indication character (i.e. " ", ",", "[", "]", "{", "}").', self::$parsedLineNumber + 1, $mapping);
}
if ('<<' === $key) {
$allowOverwrite = \true;
}
while ($i < $len) {
if (':' === $mapping[$i] || ' ' === $mapping[$i] || "\n" === $mapping[$i]) {
++$i;
continue;
}
$tag = self::parseTag($mapping, $i, $flags);
switch ($mapping[$i]) {
case '[':
// nested sequence
$value = self::parseSequence($mapping, $flags, $i, $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 ('<<' === $key) {
foreach ($value as $parsedValue) {
$output += $parsedValue;
}
} elseif ($allowOverwrite || !isset($output[$key])) {
if (null !== $tag) {
$output[$key] = new TaggedValue($tag, $value);
} else {
$output[$key] = $value;
}
} elseif (isset($output[$key])) {
throw new ParseException(\sprintf('Duplicate key "%s" detected.', $key), self::$parsedLineNumber + 1, $mapping);
}
break;
case '{':
// nested mapping
$value = self::parseMapping($mapping, $flags, $i, $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) {
$output += $value;
} elseif ($allowOverwrite || !isset($output[$key])) {
if (null !== $tag) {
$output[$key] = new TaggedValue($tag, $value);
} else {
$output[$key] = $value;
}
} elseif (isset($output[$key])) {
throw new ParseException(\sprintf('Duplicate key "%s" detected.', $key), self::$parsedLineNumber + 1, $mapping);
}
break;
default:
$value = self::parseScalar($mapping, $flags, [',', '}', "\n"], $i, null === $tag, $references, $isValueQuoted);
// 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) {
$output += $value;
} elseif ($allowOverwrite || !isset($output[$key])) {
if (!$isValueQuoted && \is_string($value) && '' !== $value && '&' === $value[0] && !self::isBinaryString($value) && Parser::preg_match(Parser::REFERENCE_PATTERN, $value, $matches)) {
$references[$matches['ref']] = $matches['value'];
$value = $matches['value'];
}
if (null !== $tag) {
$output[$key] = new TaggedValue($tag, $value);
} else {
$output[$key] = $value;
}
} elseif (isset($output[$key])) {
throw new ParseException(\sprintf('Duplicate key "%s" detected.', $key), self::$parsedLineNumber + 1, $mapping);
}
--$i;
}
++$i;
continue 2;
}
}
throw new ParseException(\sprintf('Malformed inline YAML string: "%s".', $mapping), self::$parsedLineNumber + 1, null, self::$parsedFilename);
}
/**
* Evaluates scalars and replaces magic values.
*
* @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
* @return mixed
*/
private static function evaluateScalar(string $scalar, int $flags, array &$references = [], ?bool &$isQuotedString = null)
{
$isQuotedString = \false;
$scalar = \trim($scalar);
if (\strncmp($scalar, '*', \strlen('*')) === 0) {
if (\false !== ($pos = \strpos($scalar, '#'))) {
$value = \substr($scalar, 1, $pos - 2);
} else {
$value = \substr($scalar, 1);
}
// an unquoted *
if (\false === $value || '' === $value) {
throw new ParseException('A reference must contain at least one character.', self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
if (!\array_key_exists($value, $references)) {
throw new ParseException(\sprintf('Reference "%s" does not exist.', $value), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
return $references[$value];
}
$scalarLower = \strtolower($scalar);
switch (\true) {
case 'null' === $scalarLower:
case '' === $scalar:
case '~' === $scalar:
return null;
case 'true' === $scalarLower:
return \true;
case 'false' === $scalarLower:
return \false;
case '!' === $scalar[0]:
switch (\true) {
case \strncmp($scalar, '!!str ', \strlen('!!str ')) === 0:
$s = (string) \substr($scalar, 6);
if (\in_array($s[0] ?? '', ['"', "'"], \true)) {
$isQuotedString = \true;
$s = self::parseQuotedScalar($s);
}
return $s;
case \strncmp($scalar, '! ', \strlen('! ')) === 0:
return \substr($scalar, 2);
case \strncmp($scalar, '!php/object', \strlen('!php/object')) === 0:
if (self::$objectSupport) {
if (!isset($scalar[12])) {
throw new ParseException('Missing value for tag "!php/object".', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
return \unserialize(self::parseScalar(\substr($scalar, 12)));
}
if (self::$exceptionOnInvalidType) {
throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
return null;
case \strncmp($scalar, '!php/const', \strlen('!php/const')) === 0:
if (self::$constantSupport) {
if (!isset($scalar[11])) {
throw new ParseException('Missing value for tag "!php/const".', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
$i = 0;
if (\defined($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) {
throw new ParseException(\sprintf('The string "%s" could not be parsed as a constant. Did you forget to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
return null;
case \strncmp($scalar, '!php/enum', \strlen('!php/enum')) === 0:
if (self::$constantSupport) {
if (!isset($scalar[11])) {
throw new ParseException('Missing value for tag "!php/enum".', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
$i = 0;
$enumName = self::parseScalar(\substr($scalar, 10), 0, null, $i, \false);
$useName = \strpos($enumName, '::') !== \false;
$enum = $useName ? \strstr($enumName, '::', \true) : $enumName;
if (!\class_exists($enum)) {
throw new ParseException(\sprintf('The enum "%s" is not defined.', $enum), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
if (!$useName) {
return $enum::cases();
}
if ($useValue = \substr_compare($enumName, '->value', -\strlen('->value')) === 0) {
$enumName = \substr($enumName, 0, -7);
}
if (!\defined($enumName)) {
throw new ParseException(\sprintf('The string "%s" is not the name of a valid enum.', $enumName), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
$value = \constant($enumName);
if (!$useValue) {
return $value;
}
if (!$value instanceof \BackedEnum) {
throw new ParseException(\sprintf('The enum "%s" defines no value next to its name.', $enumName), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
return $value->value;
}
if (self::$exceptionOnInvalidType) {
throw new ParseException(\sprintf('The string "%s" could not be parsed as an enum. Did you forget to pass the "Yaml::PARSE_CONSTANT" flag to the parser?', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
}
return null;
case \strncmp($scalar, '!!float ', \strlen('!!float ')) === 0:
return (float) \substr($scalar, 8);
case \strncmp($scalar, '!!binary ', \strlen('!!binary ')) === 0:
return self::evaluateBinaryScalar(\substr($scalar, 9));
}
throw new ParseException(\sprintf('The string "%s" could not be parsed as it uses an unsupported built-in tag.', $scalar), self::$parsedLineNumber, $scalar, self::$parsedFilename);
case \preg_match('/^(?:\\+|-)?0o(?P<value>[0-7_]++)$/', $scalar, $matches):
$value = \str_replace('_', '', $matches['value']);
if ('-' === $scalar[0]) {
return -\octdec($value);
}
return \octdec($value);
case \in_array($scalar[0], ['+', '-', '.'], \true) || \is_numeric($scalar[0]):
if (Parser::preg_match('{^[+-]?[0-9][0-9_]*$}', $scalar)) {
$scalar = \str_replace('_', '', $scalar);
}
switch (\true) {
case \ctype_digit($scalar):
case '-' === $scalar[0] && \ctype_digit(\substr($scalar, 1)):
$cast = (int) $scalar;
return $scalar === (string) $cast ? $cast : $scalar;
case \is_numeric($scalar):
case Parser::preg_match(self::getHexRegex(), $scalar):
$scalar = \str_replace('_', '', $scalar);
return '0x' === $scalar[0] . $scalar[1] ? \hexdec($scalar) : (float) $scalar;
case '.inf' === $scalarLower:
case '.nan' === $scalarLower:
return -\log(0);
case '-.inf' === $scalarLower:
return \log(0);
case Parser::preg_match('/^(-|\\+)?[0-9][0-9_]*(\\.[0-9_]+)?$/', $scalar):
return (float) \str_replace('_', '', $scalar);
case Parser::preg_match(self::getTimestampRegex(), $scalar):
try {
// When no timezone is provided in the parsed date, YAML spec says we must assume UTC.
$time = new \DateTimeImmutable($scalar, new \DateTimeZone('UTC'));
} catch (\Exception $e) {
// Some dates accepted by the regex are not valid dates.
throw new ParseException(\sprintf('The date "%s" could not be parsed as it is an invalid date.', $scalar), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename, $e);
}
if (Yaml::PARSE_DATETIME & $flags) {
return $time;
}
if ('' !== \rtrim($time->format('u'), '0')) {
return (float) $time->format('U.u');
}
try {
if (\false !== ($scalar = $time->getTimestamp())) {
return $scalar;
}
} catch (\ValueError $exception) {
// no-op
}
return $time->format('U');
}
}
return (string) $scalar;
}
private static function parseTag(string $value, int &$i, int $flags) : ?string
{
if ('!' !== $value[$i]) {
return null;
}
$tagLength = \strcspn($value, " \t\n[]{},", $i + 1);
$tag = \substr($value, $i + 1, $tagLength);
$nextOffset = $i + $tagLength + 1;
$nextOffset += \strspn($value, ' ', $nextOffset);
if ('' === $tag && (!isset($value[$nextOffset]) || \in_array($value[$nextOffset], [']', '}', ','], \true))) {
throw new ParseException('Using the unquoted scalar value "!" is not supported. You must quote it.', self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
// Is followed by a scalar and is a built-in tag
if ('' !== $tag && (!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], \true)) && ('!' === $tag[0] || \in_array($tag, ['str', 'php/const', 'php/enum', 'php/object'], \true))) {
// Manage in {@link self::evaluateScalar()}
return null;
}
$i = $nextOffset;
// Built-in tags
if ('' !== $tag && '!' === $tag[0]) {
throw new ParseException(\sprintf('The built-in tag "!%s" is not implemented.', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
if ('' !== $tag && !isset($value[$i])) {
throw new ParseException(\sprintf('Missing value for tag "%s".', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
if ('' === $tag || Yaml::PARSE_CUSTOM_TAGS & $flags) {
return $tag;
}
throw new ParseException(\sprintf('Tags support is not enabled. Enable the "Yaml::PARSE_CUSTOM_TAGS" flag to use "!%s".', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
}
public static function evaluateBinaryScalar(string $scalar) : string
{
$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 (!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);
}
return \base64_decode($parsedBinaryData, \true);
}
private static function isBinaryString(string $value) : bool
{
return !\preg_match('//u', $value) || \preg_match('/[^\\x00\\x07-\\x0d\\x1B\\x20-\\xff]/', $value);
}
/**
* Gets a regex that matches a YAML date.
*
* @see http://www.yaml.org/spec/1.2/spec.html#id2761573
*/
private static function getTimestampRegex() : string
{
return <<<EOF
~^
(?P<year>[0-9][0-9][0-9][0-9])
-(?P<month>[0-9][0-9]?)
-(?P<day>[0-9][0-9]?)
(?:(?:[Tt]|[ \t]+)
(?P<hour>[0-9][0-9]?)
:(?P<minute>[0-9][0-9])
:(?P<second>[0-9][0-9])
(?:\\.(?P<fraction>[0-9]*))?
(?:[ \t]*(?P<tz>Z|(?P<tz_sign>[-+])(?P<tz_hour>[0-9][0-9]?)
(?::(?P<tz_minute>[0-9][0-9]))?))?)?
\$~x
EOF;
}
/**
* Gets a regex that matches a YAML number in hexadecimal notation.
*/
private static function getHexRegex() : string
{
return '~^0x[0-9a-f_]++$~i';
}
}