mirror of
https://github.com/danog/PHP-Parser.git
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a2d7e8977a
Instead of storing subnodes in a subNodes dictionary, they are now stored as simple properties. This requires declarating the properties, assigning them in the constructor, overriding the getSubNodeNames() method and passing NULL to the first argument of the NodeAbstract constructor. [Deprecated: It's still possible to use the old mode of operation for custom nodes by passing an array of subnodes to the constructor.] The only behavior difference this should cause is that getSubNodeNames() will always return the original subnode names and skip any additional properties that were dynamically added. E.g. this means that the "namespacedName" node added by the NameResolver visitor is not treated as a subnode, but as a dynamic property instead. This change improves performance and memory usage.
120 lines
3.0 KiB
PHP
120 lines
3.0 KiB
PHP
<?php
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namespace PhpParser\Node\Scalar;
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use PhpParser\Node\Scalar;
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class String extends Scalar
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{
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/** @var string String value */
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public $value;
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protected static $replacements = array(
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'\\' => '\\',
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'$' => '$',
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'n' => "\n",
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'r' => "\r",
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't' => "\t",
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'f' => "\f",
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'v' => "\v",
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'e' => "\x1B",
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);
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/**
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* Constructs a string scalar node.
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*
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* @param string $value Value of the string
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* @param array $attributes Additional attributes
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*/
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public function __construct($value = '', array $attributes = array()) {
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parent::__construct(null, $attributes);
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$this->value = $value;
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}
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public function getSubNodeNames() {
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return array('value');
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}
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/**
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* @internal
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*
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* Parses a string token.
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*
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* @param string $str String token content
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*
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* @return string The parsed string
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*/
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public static function parse($str) {
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$bLength = 0;
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if ('b' === $str[0]) {
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$bLength = 1;
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}
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if ('\'' === $str[$bLength]) {
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return str_replace(
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array('\\\\', '\\\''),
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array( '\\', '\''),
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substr($str, $bLength + 1, -1)
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);
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} else {
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return self::parseEscapeSequences(substr($str, $bLength + 1, -1), '"');
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}
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}
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/**
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* @internal
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*
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* Parses escape sequences in strings (all string types apart from single quoted).
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*
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* @param string $str String without quotes
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* @param null|string $quote Quote type
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*
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* @return string String with escape sequences parsed
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*/
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public static function parseEscapeSequences($str, $quote) {
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if (null !== $quote) {
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$str = str_replace('\\' . $quote, $quote, $str);
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}
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return preg_replace_callback(
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'~\\\\([\\\\$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3})~',
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array(__CLASS__, 'parseCallback'),
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$str
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);
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}
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private static function parseCallback($matches) {
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$str = $matches[1];
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if (isset(self::$replacements[$str])) {
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return self::$replacements[$str];
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} elseif ('x' === $str[0] || 'X' === $str[0]) {
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return chr(hexdec($str));
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} else {
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return chr(octdec($str));
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}
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}
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/**
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* @internal
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*
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* Parses a constant doc string.
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*
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* @param string $startToken Doc string start token content (<<<SMTHG)
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* @param string $str String token content
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*
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* @return string Parsed string
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*/
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public static function parseDocString($startToken, $str) {
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// strip last newline (thanks tokenizer for sticking it into the string!)
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$str = preg_replace('~(\r\n|\n|\r)$~', '', $str);
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// nowdoc string
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if (false !== strpos($startToken, '\'')) {
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return $str;
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}
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return self::parseEscapeSequences($str, null);
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}
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}
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