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modules/ps_checkout/vendor/symfony/yaml/.gitignore

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+vendor/
+composer.lock
+phpunit.xml

modules/ps_checkout/vendor/symfony/yaml/CHANGELOG.md

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+CHANGELOG
+=========
+
+3.4.0
+-----
+
+ * added support for parsing YAML files using the `Yaml::parseFile()` or `Parser::parseFile()` method
+
+ * the `Dumper`, `Parser`, and `Yaml` classes are marked as final
+
+ * Deprecated the `!php/object:` tag which will be replaced by the
+   `!php/object` tag (without the colon) in 4.0.
+
+ * Deprecated the `!php/const:` tag which will be replaced by the
+   `!php/const` tag (without the colon) in 4.0.
+
+ * Support for the `!str` tag is deprecated, use the `!!str` tag instead.
+
+ * Deprecated using the non-specific tag `!` as its behavior will change in 4.0.
+   It will force non-evaluating your values in 4.0. Use plain integers or `!!float` instead.
+
+3.3.0
+-----
+
+ * Starting an unquoted string with a question mark followed by a space is
+   deprecated and will throw a `ParseException` in Symfony 4.0.
+
+ * Deprecated support for implicitly parsing non-string mapping keys as strings.
+   Mapping keys that are no strings will lead to a `ParseException` in Symfony
+   4.0. Use quotes to opt-in for keys to be parsed as strings.
+
+   Before:
+
+   ```php
+   $yaml = <<<YAML
+   null: null key
+   true: boolean true
+   2.0: float key
+   YAML;
+
+   Yaml::parse($yaml);
+   ```
+
+   After:
+
+   ```php
+
+   $yaml = <<<YAML
+   "null": null key
+   "true": boolean true
+   "2.0": float key
+   YAML;
+
+   Yaml::parse($yaml);
+   ```
+
+ * Omitted mapping values will be parsed as `null`.
+
+ * Omitting the key of a mapping is deprecated and will throw a `ParseException` in Symfony 4.0.
+
+ * Added support for dumping empty PHP arrays as YAML sequences:
+
+   ```php
+   Yaml::dump([], 0, 0, Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
+   ```
+
+3.2.0
+-----
+
+ * Mappings with a colon (`:`) that is not followed by a whitespace are deprecated
+   when the mapping key is not quoted and will lead to a `ParseException` in
+   Symfony 4.0 (e.g. `foo:bar` must be `foo: bar`).
+
+ * Added support for parsing PHP constants:
+
+   ```php
+   Yaml::parse('!php/const:PHP_INT_MAX', Yaml::PARSE_CONSTANT);
+   ```
+
+ * Support for silently ignoring duplicate mapping keys in YAML has been
+   deprecated and will lead to a `ParseException` in Symfony 4.0.
+
+3.1.0
+-----
+
+ * Added support to dump `stdClass` and `ArrayAccess` objects as YAML mappings
+   through the `Yaml::DUMP_OBJECT_AS_MAP` flag.
+
+ * Strings that are not UTF-8 encoded will be dumped as base64 encoded binary
+   data.
+
+ * Added support for dumping multi line strings as literal blocks.
+
+ * Added support for parsing base64 encoded binary data when they are tagged
+   with the `!!binary` tag.
+
+ * Added support for parsing timestamps as `\DateTime` objects:
+
+   ```php
+   Yaml::parse('2001-12-15 21:59:43.10 -5', Yaml::PARSE_DATETIME);
+   ```
+
+ * `\DateTime` and `\DateTimeImmutable` objects are dumped as YAML timestamps.
+
+ * Deprecated usage of `%` at the beginning of an unquoted string.
+
+ * Added support for customizing the YAML parser behavior through an optional bit field:
+
+   ```php
+   Yaml::parse('{ "foo": "bar", "fiz": "cat" }', Yaml::PARSE_EXCEPTION_ON_INVALID_TYPE | Yaml::PARSE_OBJECT | Yaml::PARSE_OBJECT_FOR_MAP);
+   ```
+
+ * Added support for customizing the dumped YAML string through an optional bit field:
+
+   ```php
+   Yaml::dump(['foo' => new A(), 'bar' => 1], 0, 0, Yaml::DUMP_EXCEPTION_ON_INVALID_TYPE | Yaml::DUMP_OBJECT);
+   ```
+
+3.0.0
+-----
+
+ * Yaml::parse() now throws an exception when a blackslash is not escaped
+   in double-quoted strings
+
+2.8.0
+-----
+
+ * Deprecated usage of a colon in an unquoted mapping value
+ * Deprecated usage of @, \`, | and > at the beginning of an unquoted string
+ * When surrounding strings with double-quotes, you must now escape `\` characters. Not
+   escaping those characters (when surrounded by double-quotes) is deprecated.
+
+   Before:
+
+   ```yml
+   class: "Foo\Var"
+   ```
+
+   After:
+
+   ```yml
+   class: "Foo\\Var"
+   ```
+
+2.1.0
+-----
+
+ * Yaml::parse() does not evaluate loaded files as PHP files by default
+   anymore (call Yaml::enablePhpParsing() to get back the old behavior)

modules/ps_checkout/vendor/symfony/yaml/Command/LintCommand.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml\Command;
+
+use Symfony\Component\Console\Command\Command;
+use Symfony\Component\Console\Exception\InvalidArgumentException;
+use Symfony\Component\Console\Exception\RuntimeException;
+use Symfony\Component\Console\Input\InputInterface;
+use Symfony\Component\Console\Input\InputOption;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Console\Style\SymfonyStyle;
+use Symfony\Component\Yaml\Exception\ParseException;
+use Symfony\Component\Yaml\Parser;
+use Symfony\Component\Yaml\Yaml;
+
+/**
+ * Validates YAML files syntax and outputs encountered errors.
+ *
+ * @author Grégoire Pineau <lyrixx@lyrixx.info>
+ * @author Robin Chalas <robin.chalas@gmail.com>
+ */
+class LintCommand extends Command
+{
+    protected static $defaultName = 'lint:yaml';
+
+    private $parser;
+    private $format;
+    private $displayCorrectFiles;
+    private $directoryIteratorProvider;
+    private $isReadableProvider;
+
+    public function __construct($name = null, $directoryIteratorProvider = null, $isReadableProvider = null)
+    {
+        parent::__construct($name);
+
+        $this->directoryIteratorProvider = $directoryIteratorProvider;
+        $this->isReadableProvider = $isReadableProvider;
+    }
+
+    /**
+     * {@inheritdoc}
+     */
+    protected function configure()
+    {
+        $this
+            ->setDescription('Lints a file and outputs encountered errors')
+            ->addArgument('filename', null, 'A file or a directory or STDIN')
+            ->addOption('format', null, InputOption::VALUE_REQUIRED, 'The output format', 'txt')
+            ->addOption('parse-tags', null, InputOption::VALUE_NONE, 'Parse custom tags')
+            ->setHelp(<<<EOF
+The <info>%command.name%</info> command lints a YAML file and outputs to STDOUT
+the first encountered syntax error.
+
+You can validates YAML contents passed from STDIN:
+
+  <info>cat filename | php %command.full_name%</info>
+
+You can also validate the syntax of a file:
+
+  <info>php %command.full_name% filename</info>
+
+Or of a whole directory:
+
+  <info>php %command.full_name% dirname</info>
+  <info>php %command.full_name% dirname --format=json</info>
+
+EOF
+            )
+        ;
+    }
+
+    protected function execute(InputInterface $input, OutputInterface $output)
+    {
+        $io = new SymfonyStyle($input, $output);
+        $filename = $input->getArgument('filename');
+        $this->format = $input->getOption('format');
+        $this->displayCorrectFiles = $output->isVerbose();
+        $flags = $input->getOption('parse-tags') ? Yaml::PARSE_CUSTOM_TAGS : 0;
+
+        if (!$filename) {
+            if (!$stdin = $this->getStdin()) {
+                throw new RuntimeException('Please provide a filename or pipe file content to STDIN.');
+            }
+
+            return $this->display($io, [$this->validate($stdin, $flags)]);
+        }
+
+        if (!$this->isReadable($filename)) {
+            throw new RuntimeException(sprintf('File or directory "%s" is not readable.', $filename));
+        }
+
+        $filesInfo = [];
+        foreach ($this->getFiles($filename) as $file) {
+            $filesInfo[] = $this->validate(file_get_contents($file), $flags, $file);
+        }
+
+        return $this->display($io, $filesInfo);
+    }
+
+    private function validate($content, $flags, $file = null)
+    {
+        $prevErrorHandler = set_error_handler(function ($level, $message, $file, $line) use (&$prevErrorHandler) {
+            if (\E_USER_DEPRECATED === $level) {
+                throw new ParseException($message, $this->getParser()->getRealCurrentLineNb() + 1);
+            }
+
+            return $prevErrorHandler ? $prevErrorHandler($level, $message, $file, $line) : false;
+        });
+
+        try {
+            $this->getParser()->parse($content, Yaml::PARSE_CONSTANT | $flags);
+        } catch (ParseException $e) {
+            return ['file' => $file, 'line' => $e->getParsedLine(), 'valid' => false, 'message' => $e->getMessage()];
+        } finally {
+            restore_error_handler();
+        }
+
+        return ['file' => $file, 'valid' => true];
+    }
+
+    private function display(SymfonyStyle $io, array $files)
+    {
+        switch ($this->format) {
+            case 'txt':
+                return $this->displayTxt($io, $files);
+            case 'json':
+                return $this->displayJson($io, $files);
+            default:
+                throw new InvalidArgumentException(sprintf('The format "%s" is not supported.', $this->format));
+        }
+    }
+
+    private function displayTxt(SymfonyStyle $io, array $filesInfo)
+    {
+        $countFiles = \count($filesInfo);
+        $erroredFiles = 0;
+
+        foreach ($filesInfo as $info) {
+            if ($info['valid'] && $this->displayCorrectFiles) {
+                $io->comment('<info>OK</info>'.($info['file'] ? sprintf(' in %s', $info['file']) : ''));
+            } elseif (!$info['valid']) {
+                ++$erroredFiles;
+                $io->text('<error> ERROR </error>'.($info['file'] ? sprintf(' in %s', $info['file']) : ''));
+                $io->text(sprintf('<error> >> %s</error>', $info['message']));
+            }
+        }
+
+        if (0 === $erroredFiles) {
+            $io->success(sprintf('All %d YAML files contain valid syntax.', $countFiles));
+        } else {
+            $io->warning(sprintf('%d YAML files have valid syntax and %d contain errors.', $countFiles - $erroredFiles, $erroredFiles));
+        }
+
+        return min($erroredFiles, 1);
+    }
+
+    private function displayJson(SymfonyStyle $io, array $filesInfo)
+    {
+        $errors = 0;
+
+        array_walk($filesInfo, function (&$v) use (&$errors) {
+            $v['file'] = (string) $v['file'];
+            if (!$v['valid']) {
+                ++$errors;
+            }
+        });
+
+        $io->writeln(json_encode($filesInfo, \JSON_PRETTY_PRINT | \JSON_UNESCAPED_SLASHES));
+
+        return min($errors, 1);
+    }
+
+    private function getFiles($fileOrDirectory)
+    {
+        if (is_file($fileOrDirectory)) {
+            yield new \SplFileInfo($fileOrDirectory);
+
+            return;
+        }
+
+        foreach ($this->getDirectoryIterator($fileOrDirectory) as $file) {
+            if (!\in_array($file->getExtension(), ['yml', 'yaml'])) {
+                continue;
+            }
+
+            yield $file;
+        }
+    }
+
+    /**
+     * @return string|null
+     */
+    private function getStdin()
+    {
+        if (0 !== ftell(\STDIN)) {
+            return null;
+        }
+
+        $inputs = '';
+        while (!feof(\STDIN)) {
+            $inputs .= fread(\STDIN, 1024);
+        }
+
+        return $inputs;
+    }
+
+    private function getParser()
+    {
+        if (!$this->parser) {
+            $this->parser = new Parser();
+        }
+
+        return $this->parser;
+    }
+
+    private function getDirectoryIterator($directory)
+    {
+        $default = function ($directory) {
+            return new \RecursiveIteratorIterator(
+                new \RecursiveDirectoryIterator($directory, \FilesystemIterator::SKIP_DOTS | \FilesystemIterator::FOLLOW_SYMLINKS),
+                \RecursiveIteratorIterator::LEAVES_ONLY
+            );
+        };
+
+        if (null !== $this->directoryIteratorProvider) {
+            return \call_user_func($this->directoryIteratorProvider, $directory, $default);
+        }
+
+        return $default($directory);
+    }
+
+    private function isReadable($fileOrDirectory)
+    {
+        $default = function ($fileOrDirectory) {
+            return is_readable($fileOrDirectory);
+        };
+
+        if (null !== $this->isReadableProvider) {
+            return \call_user_func($this->isReadableProvider, $fileOrDirectory, $default);
+        }
+
+        return $default($fileOrDirectory);
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/Dumper.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml;
+
+use Symfony\Component\Yaml\Tag\TaggedValue;
+
+/**
+ * Dumper dumps PHP variables to YAML strings.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @final since version 3.4
+ */
+class Dumper
+{
+    /**
+     * The amount of spaces to use for indentation of nested nodes.
+     *
+     * @var int
+     */
+    protected $indentation;
+
+    /**
+     * @param int $indentation
+     */
+    public function __construct($indentation = 4)
+    {
+        if ($indentation < 1) {
+            throw new \InvalidArgumentException('The indentation must be greater than zero.');
+        }
+
+        $this->indentation = $indentation;
+    }
+
+    /**
+     * Sets the indentation.
+     *
+     * @param int $num The amount of spaces to use for indentation of nested nodes
+     *
+     * @deprecated since version 3.1, to be removed in 4.0. Pass the indentation to the constructor instead.
+     */
+    public function setIndentation($num)
+    {
+        @trigger_error('The '.__METHOD__.' method is deprecated since Symfony 3.1 and will be removed in 4.0. Pass the indentation to the constructor instead.', \E_USER_DEPRECATED);
+
+        $this->indentation = (int) $num;
+    }
+
+    /**
+     * Dumps a PHP value to YAML.
+     *
+     * @param mixed $input  The PHP value
+     * @param int   $inline The level where you switch to inline YAML
+     * @param int   $indent The level of indentation (used internally)
+     * @param int   $flags  A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
+     *
+     * @return string The YAML representation of the PHP value
+     */
+    public function dump($input, $inline = 0, $indent = 0, $flags = 0)
+    {
+        if (\is_bool($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() >= 5) {
+            @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(4)) {
+                $flags |= Yaml::DUMP_OBJECT;
+            }
+        }
+
+        $output = '';
+        $prefix = $indent ? str_repeat(' ', $indent) : '';
+        $dumpObjectAsInlineMap = true;
+
+        if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($input instanceof \ArrayObject || $input instanceof \stdClass)) {
+            $dumpObjectAsInlineMap = empty((array) $input);
+        }
+
+        if ($inline <= 0 || (!\is_array($input) && !$input instanceof TaggedValue && $dumpObjectAsInlineMap) || empty($input)) {
+            $output .= $prefix.Inline::dump($input, $flags);
+        } else {
+            $dumpAsMap = Inline::isHash($input);
+
+            foreach ($input as $key => $value) {
+                if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value) && false !== strpos($value, "\n") && false === strpos($value, "\r")) {
+                    // If the first line starts with a space character, the spec requires a blockIndicationIndicator
+                    // http://www.yaml.org/spec/1.2/spec.html#id2793979
+                    $blockIndentationIndicator = (' ' === substr($value, 0, 1)) ? (string) $this->indentation : '';
+                    $output .= sprintf("%s%s%s |%s\n", $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', '', $blockIndentationIndicator);
+
+                    foreach (explode("\n", $value) as $row) {
+                        $output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
+                    }
+
+                    continue;
+                }
+
+                if ($value instanceof TaggedValue) {
+                    $output .= sprintf('%s%s !%s', $prefix, $dumpAsMap ? Inline::dump($key, $flags).':' : '-', $value->getTag());
+
+                    if ($inline >= 1 && Yaml::DUMP_MULTI_LINE_LITERAL_BLOCK & $flags && \is_string($value->getValue()) && false !== strpos($value->getValue(), "\n") && false === strpos($value->getValue(), "\r\n")) {
+                        // If the first line starts with a space character, the spec requires a blockIndicationIndicator
+                        // http://www.yaml.org/spec/1.2/spec.html#id2793979
+                        $blockIndentationIndicator = (' ' === substr($value->getValue(), 0, 1)) ? (string) $this->indentation : '';
+                        $output .= sprintf(" |%s\n", $blockIndentationIndicator);
+
+                        foreach (explode("\n", $value->getValue()) as $row) {
+                            $output .= sprintf("%s%s%s\n", $prefix, str_repeat(' ', $this->indentation), $row);
+                        }
+
+                        continue;
+                    }
+
+                    if ($inline - 1 <= 0 || null === $value->getValue() || is_scalar($value->getValue())) {
+                        $output .= ' '.$this->dump($value->getValue(), $inline - 1, 0, $flags)."\n";
+                    } else {
+                        $output .= "\n";
+                        $output .= $this->dump($value->getValue(), $inline - 1, $dumpAsMap ? $indent + $this->indentation : $indent + 2, $flags);
+                    }
+
+                    continue;
+                }
+
+                $dumpObjectAsInlineMap = true;
+
+                if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \ArrayObject || $value instanceof \stdClass)) {
+                    $dumpObjectAsInlineMap = empty((array) $value);
+                }
+
+                $willBeInlined = $inline - 1 <= 0 || !\is_array($value) && $dumpObjectAsInlineMap || empty($value);
+
+                $output .= sprintf('%s%s%s%s',
+                    $prefix,
+                    $dumpAsMap ? Inline::dump($key, $flags).':' : '-',
+                    $willBeInlined ? ' ' : "\n",
+                    $this->dump($value, $inline - 1, $willBeInlined ? 0 : $indent + $this->indentation, $flags)
+                ).($willBeInlined ? "\n" : '');
+            }
+        }
+
+        return $output;
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/Escaper.php

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+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml;
+
+/**
+ * Escaper encapsulates escaping rules for single and double-quoted
+ * YAML strings.
+ *
+ * @author Matthew Lewinski <matthew@lewinski.org>
+ *
+ * @internal
+ */
+class Escaper
+{
+    // Characters that would cause a dumped string to require double quoting.
+    const REGEX_CHARACTER_TO_ESCAPE = "[\\x00-\\x1f]|\x7f|\xc2\x85|\xc2\xa0|\xe2\x80\xa8|\xe2\x80\xa9";
+
+    // Mapping arrays for escaping a double quoted string. The backslash is
+    // first to ensure proper escaping because str_replace operates iteratively
+    // on the input arrays. This ordering of the characters avoids the use of strtr,
+    // which performs more slowly.
+    private static $escapees = ['\\', '\\\\', '\\"', '"',
+                                     "\x00",  "\x01",  "\x02",  "\x03",  "\x04",  "\x05",  "\x06",  "\x07",
+                                     "\x08",  "\x09",  "\x0a",  "\x0b",  "\x0c",  "\x0d",  "\x0e",  "\x0f",
+                                     "\x10",  "\x11",  "\x12",  "\x13",  "\x14",  "\x15",  "\x16",  "\x17",
+                                     "\x18",  "\x19",  "\x1a",  "\x1b",  "\x1c",  "\x1d",  "\x1e",  "\x1f",
+                                     "\x7f",
+                                     "\xc2\x85", "\xc2\xa0", "\xe2\x80\xa8", "\xe2\x80\xa9",
+                               ];
+    private static $escaped = ['\\\\', '\\"', '\\\\', '\\"',
+                                     '\\0',   '\\x01', '\\x02', '\\x03', '\\x04', '\\x05', '\\x06', '\\a',
+                                     '\\b',   '\\t',   '\\n',   '\\v',   '\\f',   '\\r',   '\\x0e', '\\x0f',
+                                     '\\x10', '\\x11', '\\x12', '\\x13', '\\x14', '\\x15', '\\x16', '\\x17',
+                                     '\\x18', '\\x19', '\\x1a', '\\e',   '\\x1c', '\\x1d', '\\x1e', '\\x1f',
+                                     '\\x7f',
+                                     '\\N', '\\_', '\\L', '\\P',
+                              ];
+
+    /**
+     * Determines if a PHP value would require double quoting in YAML.
+     *
+     * @param string $value A PHP value
+     *
+     * @return bool True if the value would require double quotes
+     */
+    public static function requiresDoubleQuoting($value)
+    {
+        return 0 < preg_match('/'.self::REGEX_CHARACTER_TO_ESCAPE.'/u', $value);
+    }
+
+    /**
+     * Escapes and surrounds a PHP value with double quotes.
+     *
+     * @param string $value A PHP value
+     *
+     * @return string The quoted, escaped string
+     */
+    public static function escapeWithDoubleQuotes($value)
+    {
+        return sprintf('"%s"', str_replace(self::$escapees, self::$escaped, $value));
+    }
+
+    /**
+     * Determines if a PHP value would require single quoting in YAML.
+     *
+     * @param string $value A PHP value
+     *
+     * @return bool True if the value would require single quotes
+     */
+    public static function requiresSingleQuoting($value)
+    {
+        // Determines if a PHP value is entirely composed of a value that would
+        // require single quoting in YAML.
+        if (\in_array(strtolower($value), ['null', '~', 'true', 'false', 'y', 'n', 'yes', 'no', 'on', 'off'])) {
+            return true;
+        }
+
+        // Determines if the PHP value contains any single characters that would
+        // cause it to require single quoting in YAML.
+        return 0 < preg_match('/[ \s \' " \: \{ \} \[ \] , & \* \# \?] | \A[ \- ? | < > = ! % @ ` ]/x', $value);
+    }
+
+    /**
+     * Escapes and surrounds a PHP value with single quotes.
+     *
+     * @param string $value A PHP value
+     *
+     * @return string The quoted, escaped string
+     */
+    public static function escapeWithSingleQuotes($value)
+    {
+        return sprintf("'%s'", str_replace('\'', '\'\'', $value));
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/Exception/DumpException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml\Exception;
+
+/**
+ * Exception class thrown when an error occurs during dumping.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class DumpException extends RuntimeException
+{
+}

modules/ps_checkout/vendor/symfony/yaml/Exception/ExceptionInterface.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml\Exception;
+
+/**
+ * Exception interface for all exceptions thrown by the component.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface ExceptionInterface
+{
+}

modules/ps_checkout/vendor/symfony/yaml/Exception/ParseException.php

@@ -0,0 +1,139 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml\Exception;
+
+/**
+ * Exception class thrown when an error occurs during parsing.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ParseException extends RuntimeException
+{
+    private $parsedFile;
+    private $parsedLine;
+    private $snippet;
+    private $rawMessage;
+
+    /**
+     * @param string          $message    The error message
+     * @param int             $parsedLine The line where the error occurred
+     * @param string|null     $snippet    The snippet of code near the problem
+     * @param string|null     $parsedFile The file name where the error occurred
+     * @param \Exception|null $previous   The previous exception
+     */
+    public function __construct($message, $parsedLine = -1, $snippet = null, $parsedFile = null, \Exception $previous = null)
+    {
+        $this->parsedFile = $parsedFile;
+        $this->parsedLine = $parsedLine;
+        $this->snippet = $snippet;
+        $this->rawMessage = $message;
+
+        $this->updateRepr();
+
+        parent::__construct($this->message, 0, $previous);
+    }
+
+    /**
+     * Gets the snippet of code near the error.
+     *
+     * @return string The snippet of code
+     */
+    public function getSnippet()
+    {
+        return $this->snippet;
+    }
+
+    /**
+     * Sets the snippet of code near the error.
+     *
+     * @param string $snippet The code snippet
+     */
+    public function setSnippet($snippet)
+    {
+        $this->snippet = $snippet;
+
+        $this->updateRepr();
+    }
+
+    /**
+     * Gets the filename where the error occurred.
+     *
+     * This method returns null if a string is parsed.
+     *
+     * @return string The filename
+     */
+    public function getParsedFile()
+    {
+        return $this->parsedFile;
+    }
+
+    /**
+     * Sets the filename where the error occurred.
+     *
+     * @param string $parsedFile The filename
+     */
+    public function setParsedFile($parsedFile)
+    {
+        $this->parsedFile = $parsedFile;
+
+        $this->updateRepr();
+    }
+
+    /**
+     * Gets the line where the error occurred.
+     *
+     * @return int The file line
+     */
+    public function getParsedLine()
+    {
+        return $this->parsedLine;
+    }
+
+    /**
+     * Sets the line where the error occurred.
+     *
+     * @param int $parsedLine The file line
+     */
+    public function setParsedLine($parsedLine)
+    {
+        $this->parsedLine = $parsedLine;
+
+        $this->updateRepr();
+    }
+
+    private function updateRepr()
+    {
+        $this->message = $this->rawMessage;
+
+        $dot = false;
+        if ('.' === substr($this->message, -1)) {
+            $this->message = substr($this->message, 0, -1);
+            $dot = true;
+        }
+
+        if (null !== $this->parsedFile) {
+            $this->message .= sprintf(' in %s', json_encode($this->parsedFile, \JSON_UNESCAPED_SLASHES | \JSON_UNESCAPED_UNICODE));
+        }
+
+        if ($this->parsedLine >= 0) {
+            $this->message .= sprintf(' at line %d', $this->parsedLine);
+        }
+
+        if ($this->snippet) {
+            $this->message .= sprintf(' (near "%s")', $this->snippet);
+        }
+
+        if ($dot) {
+            $this->message .= '.';
+        }
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/Exception/RuntimeException.php

@@ -0,0 +1,21 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml\Exception;
+
+/**
+ * Exception class thrown when an error occurs during parsing.
+ *
+ * @author Romain Neutron <imprec@gmail.com>
+ */
+class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

modules/ps_checkout/vendor/symfony/yaml/Inline.php

@@ -0,0 +1,927 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * 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\Tag\TaggedValue;
+
+/**
+ * Inline implements a YAML parser/dumper for the YAML inline syntax.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @internal
+ */
+class Inline
+{
+    const REGEX_QUOTED_STRING = '(?:"([^"\\\\]*+(?:\\\\.[^"\\\\]*+)*+)"|\'([^\']*+(?:\'\'[^\']*+)*+)\')';
+
+    public static $parsedLineNumber = -1;
+    public static $parsedFilename;
+
+    private static $exceptionOnInvalidType = false;
+    private static $objectSupport = false;
+    private static $objectForMap = false;
+    private static $constantSupport = false;
+
+    /**
+     * @param int         $flags
+     * @param int|null    $parsedLineNumber
+     * @param string|null $parsedFilename
+     */
+    public static function initialize($flags, $parsedLineNumber = null, $parsedFilename = null)
+    {
+        self::$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 string $value      A YAML string
+     * @param int    $flags      A bit field of PARSE_* constants to customize the YAML parser behavior
+     * @param array  $references Mapping of variable names to values
+     *
+     * @return mixed A PHP value
+     *
+     * @throws ParseException
+     */
+    public static function parse($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)) {
+            @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) {
+                @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) {
+                $references = func_get_arg(4);
+            } else {
+                $references = [];
+            }
+        }
+
+        self::initialize($flags);
+
+        $value = trim($value);
+
+        if ('' === $value) {
+            return '';
+        }
+
+        if (2 /* MB_OVERLOAD_STRING */ & (int) ini_get('mbstring.func_overload')) {
+            $mbEncoding = mb_internal_encoding();
+            mb_internal_encoding('ASCII');
+        }
+
+        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, $references);
+            }
+
+            // some comments are allowed at the end
+            if (preg_replace('/\s*#.*$/A', '', substr($value, $i))) {
+                throw new ParseException(sprintf('Unexpected characters near "%s".', substr($value, $i)), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
+            }
+
+            if (null !== $tag) {
+                return new TaggedValue($tag, $result);
+            }
+
+            return $result;
+        } finally {
+            if (isset($mbEncoding)) {
+                mb_internal_encoding($mbEncoding);
+            }
+        }
+    }
+
+    /**
+     * Dumps a given PHP variable to a YAML string.
+     *
+     * @param mixed $value The PHP variable to convert
+     * @param int   $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
+     *
+     * @return string The YAML string representing the PHP value
+     *
+     * @throws DumpException When trying to dump PHP resource
+     */
+    public static function dump($value, $flags = 0)
+    {
+        if (\is_bool($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) {
+            @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):
+                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):
+                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 || $value instanceof \ArrayObject)) {
+                    return self::dumpArray($value, $flags & ~Yaml::DUMP_EMPTY_ARRAY_AS_SEQUENCE);
+                }
+
+                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):
+                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) $value;
+            case is_numeric($value) && false === strpos($value, "\f") && false === strpos($value, "\n") && false === strpos($value, "\r") && false === strpos($value, "\t") && false === strpos($value, "\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.
+                        $repr = '!!float '.$repr;
+                    }
+                } 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):
+            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.
+     *
+     * @internal
+     *
+     * @param array|\ArrayObject|\stdClass $value The PHP array or array-like object to check
+     *
+     * @return bool true if value is hash array, false otherwise
+     */
+    public static function isHash($value)
+    {
+        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   $flags A bit field of Yaml::DUMP_* constants to customize the dumped YAML string
+     *
+     * @return string The YAML string representing the PHP array
+     */
+    private static function dumpArray($value, $flags)
+    {
+        // array
+        if (($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));
+        }
+
+        // hash
+        $output = [];
+        foreach ($value as $key => $val) {
+            $output[] = sprintf('%s: %s', self::dump($key, $flags), self::dump($val, $flags));
+        }
+
+        return sprintf('{ %s }', implode(', ', $output));
+    }
+
+    /**
+     * Parses a YAML scalar.
+     *
+     * @param string   $scalar
+     * @param int      $flags
+     * @param string[] $delimiters
+     * @param int      &$i
+     * @param bool     $evaluate
+     * @param array    $references
+     *
+     * @return string
+     *
+     * @throws ParseException When malformed inline YAML string is parsed
+     *
+     * @internal
+     */
+    public static function parseScalar($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], $delimiters)) {
+                    throw new ParseException(sprintf('Unexpected characters (%s).', substr($scalar, $i)), self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
+                }
+            }
+        } else {
+            // "normal" string
+            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, $match[0][1]);
+                }
+            } elseif (Parser::preg_match('/^(.'.($legacyOmittedKeySupport ? '+' : '*').'?)('.implode('|', $delimiters).')/', substr($scalar, $i), $match)) {
+                $output = $match[1];
+                $i += \strlen($output);
+            } else {
+                throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $scalar), self::$parsedLineNumber + 1, null, self::$parsedFilename);
+            }
+
+            // a non-quoted string cannot start with @ or ` (reserved) nor with a scalar indicator (| or >)
+            if ($output && ('@' === $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 ($output && '%' === $output[0]) {
+                @trigger_error(self::getDeprecationMessage(sprintf('Not quoting the scalar "%s" starting with the "%%" indicator character is deprecated since Symfony 3.1 and will throw a ParseException in 4.0.', $output)), \E_USER_DEPRECATED);
+            }
+
+            if ($evaluate) {
+                $output = self::evaluateScalar($output, $flags, $references);
+            }
+        }
+
+        return $output;
+    }
+
+    /**
+     * Parses a YAML quoted scalar.
+     *
+     * @param string $scalar
+     * @param int    &$i
+     *
+     * @return string
+     *
+     * @throws ParseException When malformed inline YAML string is parsed
+     */
+    private static function parseQuotedScalar($scalar, &$i)
+    {
+        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);
+
+        $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.
+     *
+     * @param string $sequence
+     * @param int    $flags
+     * @param int    &$i
+     * @param array  $references
+     *
+     * @return array
+     *
+     * @throws ParseException When malformed inline YAML string is parsed
+     */
+    private static function parseSequence($sequence, $flags, &$i = 0, $references = [])
+    {
+        $output = [];
+        $len = \strlen($sequence);
+        ++$i;
+
+        // [foo, bar, ...]
+        while ($i < $len) {
+            if (']' === $sequence[$i]) {
+                return $output;
+            }
+            if (',' === $sequence[$i] || ' ' === $sequence[$i]) {
+                ++$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:
+                    $isQuoted = \in_array($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, ': ')) {
+                        // embedded mapping?
+                        try {
+                            $pos = 0;
+                            $value = self::parseMapping('{'.$value.'}', $flags, $pos, $references);
+                        } catch (\InvalidArgumentException $e) {
+                            // no, it's not
+                        }
+                    }
+
+                    --$i;
+            }
+
+            if (null !== $tag) {
+                $value = new TaggedValue($tag, $value);
+            }
+
+            $output[] = $value;
+
+            ++$i;
+        }
+
+        throw new ParseException(sprintf('Malformed inline YAML string: "%s".', $sequence), self::$parsedLineNumber + 1, null, self::$parsedFilename);
+    }
+
+    /**
+     * Parses a YAML mapping.
+     *
+     * @param string $mapping
+     * @param int    $flags
+     * @param int    &$i
+     * @param array  $references
+     *
+     * @return array|\stdClass
+     *
+     * @throws ParseException When malformed inline YAML string is parsed
+     */
+    private static function parseMapping($mapping, $flags, &$i = 0, $references = [])
+    {
+        $output = [];
+        $len = \strlen($mapping);
+        ++$i;
+        $allowOverwrite = false;
+
+        // {foo: bar, bar:foo, ...}
+        while ($i < $len) {
+            switch ($mapping[$i]) {
+                case ' ':
+                case ',':
+                    ++$i;
+                    continue 2;
+                case '}':
+                    if (self::$objectForMap) {
+                        return (object) $output;
+                    }
+
+                    return $output;
+            }
+
+            // key
+            $isKeyQuoted = \in_array($mapping[$i], ['"', "'"], true);
+            $key = self::parseScalar($mapping, $flags, [':', ' '], $i, false, [], true);
+
+            if ('!php/const' === $key) {
+                $key .= self::parseScalar($mapping, $flags, [':', ' '], $i, false, [], true);
+                if ('!php/const:' === $key && ':' !== $mapping[$i]) {
+                    $key = '';
+                    --$i;
+                } else {
+                    $key = self::evaluateScalar($key, $flags);
+                }
+            }
+
+            if (':' !== $key && false === $i = strpos($mapping, ':', $i)) {
+                break;
+            }
+
+            if (':' === $key) {
+                @trigger_error(self::getDeprecationMessage('Omitting the key of a mapping is deprecated and will throw a ParseException in 4.0.'), \E_USER_DEPRECATED);
+            }
+
+            if (!$isKeyQuoted) {
+                $evaluatedKey = self::evaluateScalar($key, $flags, $references);
+
+                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], [' ', ',', '[', ']', '{', '}'], 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) {
+                $allowOverwrite = true;
+            }
+
+            while ($i < $len) {
+                if (':' === $mapping[$i] || ' ' === $mapping[$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])) {
+                            @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;
+                    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])) {
+                            @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, [',', '}'], $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) {
+                            $output += $value;
+                        } elseif ($allowOverwrite || !isset($output[$key])) {
+                            if (null !== $tag) {
+                                $output[$key] = new TaggedValue($tag, $value);
+                            } else {
+                                $output[$key] = $value;
+                            }
+                        } elseif (isset($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.', $key)), \E_USER_DEPRECATED);
+                        }
+                        --$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.
+     *
+     * @param string $scalar
+     * @param int    $flags
+     * @param array  $references
+     *
+     * @return mixed The evaluated YAML string
+     *
+     * @throws ParseException when object parsing support was disabled and the parser detected a PHP object or when a reference could not be resolved
+     */
+    private static function evaluateScalar($scalar, $flags, $references = [])
+    {
+        $scalar = trim($scalar);
+        $scalarLower = strtolower($scalar);
+
+        if (0 === strpos($scalar, '*')) {
+            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];
+        }
+
+        switch (true) {
+            case 'null' === $scalarLower:
+            case '' === $scalar:
+            case '~' === $scalar:
+                return null;
+            case 'true' === $scalarLower:
+                return true;
+            case 'false' === $scalarLower:
+                return false;
+            case '!' === $scalar[0]:
+                switch (true) {
+                    case 0 === strpos($scalar, '!str'):
+                        @trigger_error(self::getDeprecationMessage('Support for the !str tag is deprecated since Symfony 3.4. Use the !!str tag instead.'), \E_USER_DEPRECATED);
+
+                        return (string) substr($scalar, 5);
+                    case 0 === strpos($scalar, '!!str '):
+                        return (string) substr($scalar, 6);
+                    case 0 === strpos($scalar, '! '):
+                        @trigger_error(self::getDeprecationMessage('Using the non-specific tag "!" is deprecated since Symfony 3.4 as its behavior will change in 4.0. It will force non-evaluating your values in 4.0. Use plain integers or !!float instead.'), \E_USER_DEPRECATED);
+
+                        return (int) self::parseScalar(substr($scalar, 2), $flags);
+                    case 0 === strpos($scalar, '!php/object:'):
+                        if (self::$objectSupport) {
+                            @trigger_error(self::getDeprecationMessage('The !php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.4 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), \E_USER_DEPRECATED);
+
+                            return unserialize(substr($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 0 === strpos($scalar, '!!php/object:'):
+                        if (self::$objectSupport) {
+                            @trigger_error(self::getDeprecationMessage('The !!php/object: tag to indicate dumped PHP objects is deprecated since Symfony 3.1 and will be removed in 4.0. Use the !php/object (without the colon) tag instead.'), \E_USER_DEPRECATED);
+
+                            return unserialize(substr($scalar, 13));
+                        }
+
+                        if (self::$exceptionOnInvalidType) {
+                            throw new ParseException('Object support when parsing a YAML file has been disabled.', self::$parsedLineNumber + 1, $scalar, self::$parsedFilename);
+                        }
+
+                        return null;
+                    case 0 === strpos($scalar, '!php/object'):
+                        if (self::$objectSupport) {
+                            if (!isset($scalar[12])) {
+                                return false;
+                            }
+
+                            return unserialize(self::parseScalar(substr($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 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);
+                            }
+
+                            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 0 === strpos($scalar, '!php/const'):
+                        if (self::$constantSupport) {
+                            if (!isset($scalar[11])) {
+                                return '';
+                            }
+
+                            $i = 0;
+                            if (\defined($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 0 === strpos($scalar, '!!float '):
+                        return (float) substr($scalar, 8);
+                    case 0 === strpos($scalar, '!!binary '):
+                        return self::evaluateBinaryScalar(substr($scalar, 9));
+                    default:
+                        @trigger_error(self::getDeprecationMessage(sprintf('Using the unquoted scalar value "%s" is deprecated since Symfony 3.3 and will be considered as a tagged value in 4.0. You must quote it.', $scalar)), \E_USER_DEPRECATED);
+                }
+
+            // Optimize for returning strings.
+            // no break
+            case '+' === $scalar[0] || '-' === $scalar[0] || '.' === $scalar[0] || is_numeric($scalar[0]):
+                if (Parser::preg_match('{^[+-]?[0-9][0-9_]*$}', $scalar)) {
+                    $scalar = str_replace('_', '', (string) $scalar);
+                }
+
+                switch (true) {
+                    case ctype_digit($scalar):
+                        if (preg_match('/^0[0-7]+$/', $scalar)) {
+                            return octdec($scalar);
+                        }
+
+                        $cast = (int) $scalar;
+
+                        return ($scalar === (string) $cast) ? $cast : $scalar;
+                    case '-' === $scalar[0] && ctype_digit(substr($scalar, 1)):
+                        if (preg_match('/^-0[0-7]+$/', $scalar)) {
+                            return -octdec(substr($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' === $scalarLower:
+                        return log(0);
+                    case Parser::preg_match('/^(-|\+)?[0-9][0-9,]*(\.[0-9_]+)?$/', $scalar):
+                    case Parser::preg_match('/^(-|\+)?[0-9][0-9_]*(\.[0-9_]+)?$/', $scalar):
+                        if (false !== strpos($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([',', '_'], '', $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'));
+                        }
+
+                        $timeZone = date_default_timezone_get();
+                        date_default_timezone_set('UTC');
+                        $time = strtotime($scalar);
+                        date_default_timezone_set($timeZone);
+
+                        return $time;
+                }
+        }
+
+        return (string) $scalar;
+    }
+
+    /**
+     * @param string $value
+     * @param int    &$i
+     * @param int    $flags
+     *
+     * @return string|null
+     */
+    private static function parseTag($value, &$i, $flags)
+    {
+        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, ' ', $nextOffset);
+
+        // Is followed by a scalar
+        if ((!isset($value[$nextOffset]) || !\in_array($value[$nextOffset], ['[', '{'], true)) && 'tagged' !== $tag) {
+            // Manage non-whitelisted scalars in {@link self::evaluateScalar()}
+            return null;
+        }
+
+        // Built-in tags
+        if ($tag && '!' === $tag[0]) {
+            throw new ParseException(sprintf('The built-in tag "!%s" is not implemented.', $tag), self::$parsedLineNumber + 1, $value, self::$parsedFilename);
+        }
+
+        if (Yaml::PARSE_CUSTOM_TAGS & $flags) {
+            $i = $nextOffset;
+
+            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);
+    }
+
+    /**
+     * @param string $scalar
+     *
+     * @return string
+     *
+     * @internal
+     */
+    public static function evaluateBinaryScalar($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 (!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($parsedBinaryData, true);
+    }
+
+    private static function isBinaryString($value)
+    {
+        return !preg_match('//u', $value) || preg_match('/[^\x00\x07-\x0d\x1B\x20-\xff]/', $value);
+    }
+
+    /**
+     * Gets a regex that matches a YAML date.
+     *
+     * @return string The regular expression
+     *
+     * @see http://www.yaml.org/spec/1.2/spec.html#id2761573
+     */
+    private static function getTimestampRegex()
+    {
+        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]))?))?)?
+        $~x
+EOF;
+    }
+
+    /**
+     * Gets a regex that matches a YAML number in hexadecimal notation.
+     *
+     * @return string
+     */
+    private static function getHexRegex()
+    {
+        return '~^0x[0-9a-f_]++$~i';
+    }
+
+    private static function getDeprecationMessage($message)
+    {
+        $message = rtrim($message, '.');
+
+        if (null !== self::$parsedFilename) {
+            $message .= ' in '.self::$parsedFilename;
+        }
+
+        if (-1 !== self::$parsedLineNumber) {
+            $message .= ' on line '.(self::$parsedLineNumber + 1);
+        }
+
+        return $message.'.';
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/LICENSE

@@ -0,0 +1,19 @@
+Copyright (c) 2004-2020 Fabien Potencier
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is furnished
+to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

modules/ps_checkout/vendor/symfony/yaml/README.md

@@ -0,0 +1,13 @@
+Yaml Component
+==============
+
+The Yaml component loads and dumps YAML files.
+
+Resources
+---------
+
+  * [Documentation](https://symfony.com/doc/current/components/yaml.html)
+  * [Contributing](https://symfony.com/doc/current/contributing/index.html)
+  * [Report issues](https://github.com/symfony/symfony/issues) and
+    [send Pull Requests](https://github.com/symfony/symfony/pulls)
+    in the [main Symfony repository](https://github.com/symfony/symfony)

modules/ps_checkout/vendor/symfony/yaml/Tag/TaggedValue.php

@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml\Tag;
+
+/**
+ * @author Nicolas Grekas <p@tchwork.com>
+ * @author Guilhem N. <egetick@gmail.com>
+ */
+final class TaggedValue
+{
+    private $tag;
+    private $value;
+
+    /**
+     * @param string $tag
+     * @param mixed  $value
+     */
+    public function __construct($tag, $value)
+    {
+        $this->tag = $tag;
+        $this->value = $value;
+    }
+
+    /**
+     * @return string
+     */
+    public function getTag()
+    {
+        return $this->tag;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getValue()
+    {
+        return $this->value;
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/Unescaper.php

@@ -0,0 +1,142 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml;
+
+use Symfony\Component\Yaml\Exception\ParseException;
+
+/**
+ * Unescaper encapsulates unescaping rules for single and double-quoted
+ * YAML strings.
+ *
+ * @author Matthew Lewinski <matthew@lewinski.org>
+ *
+ * @internal
+ */
+class Unescaper
+{
+    /**
+     * Regex fragment that matches an escaped character in a double quoted string.
+     */
+    const REGEX_ESCAPED_CHARACTER = '\\\\(x[0-9a-fA-F]{2}|u[0-9a-fA-F]{4}|U[0-9a-fA-F]{8}|.)';
+
+    /**
+     * Unescapes a single quoted string.
+     *
+     * @param string $value A single quoted string
+     *
+     * @return string The unescaped string
+     */
+    public function unescapeSingleQuotedString($value)
+    {
+        return str_replace('\'\'', '\'', $value);
+    }
+
+    /**
+     * Unescapes a double quoted string.
+     *
+     * @param string $value A double quoted string
+     *
+     * @return string The unescaped string
+     */
+    public function unescapeDoubleQuotedString($value)
+    {
+        $callback = function ($match) {
+            return $this->unescapeCharacter($match[0]);
+        };
+
+        // evaluate the string
+        return preg_replace_callback('/'.self::REGEX_ESCAPED_CHARACTER.'/u', $callback, $value);
+    }
+
+    /**
+     * Unescapes a character that was found in a double-quoted string.
+     *
+     * @param string $value An escaped character
+     *
+     * @return string The unescaped character
+     */
+    private function unescapeCharacter($value)
+    {
+        switch ($value[1]) {
+            case '0':
+                return "\x0";
+            case 'a':
+                return "\x7";
+            case 'b':
+                return "\x8";
+            case 't':
+                return "\t";
+            case "\t":
+                return "\t";
+            case 'n':
+                return "\n";
+            case 'v':
+                return "\xB";
+            case 'f':
+                return "\xC";
+            case 'r':
+                return "\r";
+            case 'e':
+                return "\x1B";
+            case ' ':
+                return ' ';
+            case '"':
+                return '"';
+            case '/':
+                return '/';
+            case '\\':
+                return '\\';
+            case 'N':
+                // U+0085 NEXT LINE
+                return "\xC2\x85";
+            case '_':
+                // U+00A0 NO-BREAK SPACE
+                return "\xC2\xA0";
+            case 'L':
+                // U+2028 LINE SEPARATOR
+                return "\xE2\x80\xA8";
+            case 'P':
+                // U+2029 PARAGRAPH SEPARATOR
+                return "\xE2\x80\xA9";
+            case 'x':
+                return self::utf8chr(hexdec(substr($value, 2, 2)));
+            case 'u':
+                return self::utf8chr(hexdec(substr($value, 2, 4)));
+            case 'U':
+                return self::utf8chr(hexdec(substr($value, 2, 8)));
+            default:
+                throw new ParseException(sprintf('Found unknown escape character "%s".', $value));
+        }
+    }
+
+    /**
+     * Get the UTF-8 character for the given code point.
+     *
+     * @param int $c The unicode code point
+     *
+     * @return string The corresponding UTF-8 character
+     */
+    private static function utf8chr($c)
+    {
+        if (0x80 > $c %= 0x200000) {
+            return \chr($c);
+        }
+        if (0x800 > $c) {
+            return \chr(0xC0 | $c >> 6).\chr(0x80 | $c & 0x3F);
+        }
+        if (0x10000 > $c) {
+            return \chr(0xE0 | $c >> 12).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
+        }
+
+        return \chr(0xF0 | $c >> 18).\chr(0x80 | $c >> 12 & 0x3F).\chr(0x80 | $c >> 6 & 0x3F).\chr(0x80 | $c & 0x3F);
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/Yaml.php

@@ -0,0 +1,150 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\Yaml;
+
+use Symfony\Component\Yaml\Exception\ParseException;
+
+/**
+ * Yaml offers convenience methods to load and dump YAML.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @final since version 3.4
+ */
+class Yaml
+{
+    const DUMP_OBJECT = 1;
+    const PARSE_EXCEPTION_ON_INVALID_TYPE = 2;
+    const PARSE_OBJECT = 4;
+    const PARSE_OBJECT_FOR_MAP = 8;
+    const DUMP_EXCEPTION_ON_INVALID_TYPE = 16;
+    const PARSE_DATETIME = 32;
+    const DUMP_OBJECT_AS_MAP = 64;
+    const DUMP_MULTI_LINE_LITERAL_BLOCK = 128;
+    const PARSE_CONSTANT = 256;
+    const PARSE_CUSTOM_TAGS = 512;
+    const DUMP_EMPTY_ARRAY_AS_SEQUENCE = 1024;
+
+    /**
+     * @deprecated since version 3.4, to be removed in 4.0. Quote your evaluable keys instead.
+     */
+    const PARSE_KEYS_AS_STRINGS = 2048;
+
+    /**
+     * Parses a YAML file into a PHP value.
+     *
+     * Usage:
+     *
+     *     $array = Yaml::parseFile('config.yml');
+     *     print_r($array);
+     *
+     * @param string $filename The path to the YAML file to be parsed
+     * @param int    $flags    A bit field of PARSE_* constants to customize the YAML parser behavior
+     *
+     * @return mixed The YAML converted to a PHP value
+     *
+     * @throws ParseException If the file could not be read or the YAML is not valid
+     */
+    public static function parseFile($filename, $flags = 0)
+    {
+        $yaml = new Parser();
+
+        return $yaml->parseFile($filename, $flags);
+    }
+
+    /**
+     * Parses YAML into a PHP value.
+     *
+     *  Usage:
+     *  <code>
+     *   $array = Yaml::parse(file_get_contents('config.yml'));
+     *   print_r($array);
+     *  </code>
+     *
+     * @param string $input A string containing YAML
+     * @param int    $flags A bit field of PARSE_* constants to customize the YAML parser behavior
+     *
+     * @return mixed The YAML converted to a PHP value
+     *
+     * @throws ParseException If the YAML is not valid
+     */
+    public static function parse($input, $flags = 0)
+    {
+        if (\is_bool($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 PARSE_EXCEPTION_ON_INVALID_TYPE flag instead.', \E_USER_DEPRECATED);
+
+            if ($flags) {
+                $flags = self::PARSE_EXCEPTION_ON_INVALID_TYPE;
+            } else {
+                $flags = 0;
+            }
+        }
+
+        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 PARSE_OBJECT flag instead.', \E_USER_DEPRECATED);
+
+            if (func_get_arg(2)) {
+                $flags |= self::PARSE_OBJECT;
+            }
+        }
+
+        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 |= self::PARSE_OBJECT_FOR_MAP;
+            }
+        }
+
+        $yaml = new Parser();
+
+        return $yaml->parse($input, $flags);
+    }
+
+    /**
+     * Dumps a PHP value to a YAML string.
+     *
+     * The dump method, when supplied with an array, will do its best
+     * to convert the array into friendly YAML.
+     *
+     * @param mixed $input  The PHP value
+     * @param int   $inline The level where you switch to inline YAML
+     * @param int   $indent The amount of spaces to use for indentation of nested nodes
+     * @param int   $flags  A bit field of DUMP_* constants to customize the dumped YAML string
+     *
+     * @return string A YAML string representing the original PHP value
+     */
+    public static function dump($input, $inline = 2, $indent = 4, $flags = 0)
+    {
+        if (\is_bool($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 DUMP_EXCEPTION_ON_INVALID_TYPE flag instead.', \E_USER_DEPRECATED);
+
+            if ($flags) {
+                $flags = self::DUMP_EXCEPTION_ON_INVALID_TYPE;
+            } else {
+                $flags = 0;
+            }
+        }
+
+        if (\func_num_args() >= 5) {
+            @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 DUMP_OBJECT flag instead.', \E_USER_DEPRECATED);
+
+            if (func_get_arg(4)) {
+                $flags |= self::DUMP_OBJECT;
+            }
+        }
+
+        $yaml = new Dumper($indent);
+
+        return $yaml->dump($input, $inline, 0, $flags);
+    }
+}

modules/ps_checkout/vendor/symfony/yaml/composer.json

@@ -0,0 +1,38 @@
+{
+    "name": "symfony/yaml",
+    "type": "library",
+    "description": "Symfony Yaml Component",
+    "keywords": [],
+    "homepage": "https://symfony.com",
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "Fabien Potencier",
+            "email": "fabien@symfony.com"
+        },
+        {
+            "name": "Symfony Community",
+            "homepage": "https://symfony.com/contributors"
+        }
+    ],
+    "require": {
+        "php": "^5.5.9|>=7.0.8",
+        "symfony/polyfill-ctype": "~1.8"
+    },
+    "require-dev": {
+        "symfony/console": "~3.4|~4.0"
+    },
+    "conflict": {
+        "symfony/console": "<3.4"
+    },
+    "suggest": {
+        "symfony/console": "For validating YAML files using the lint command"
+    },
+    "autoload": {
+        "psr-4": { "Symfony\\Component\\Yaml\\": "" },
+        "exclude-from-classmap": [
+            "/Tests/"
+        ]
+    },
+    "minimum-stability": "dev"
+}

modules/ps_checkout/vendor/symfony/yaml/phpunit.xml.dist

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:noNamespaceSchemaLocation="http://schema.phpunit.de/5.2/phpunit.xsd"
+         backupGlobals="false"
+         colors="true"
+         bootstrap="vendor/autoload.php"
+         failOnRisky="true"
+         failOnWarning="true"
+>
+    <php>
+        <ini name="error_reporting" value="-1" />
+    </php>
+
+    <testsuites>
+        <testsuite name="Symfony Yaml Component Test Suite">
+            <directory>./Tests/</directory>
+        </testsuite>
+    </testsuites>
+
+    <filter>
+        <whitelist>
+            <directory>./</directory>
+            <exclude>
+                <directory>./Tests</directory>
+                <directory>./vendor</directory>
+            </exclude>
+        </whitelist>
+    </filter>
+</phpunit>