php-parser/lib/PHPParser/Node/Scalar/String.php

112 lines
3.0 KiB
PHP

<?php
/**
* @property string $value String value
*/
class PHPParser_Node_Scalar_String extends PHPParser_Node_Scalar
{
protected static $replacements = array(
'\\' => '\\',
'$' => '$',
'n' => "\n",
'r' => "\r",
't' => "\t",
'f' => "\f",
'v' => "\v",
'e' => "\x1B",
);
/**
* Constructs a string scalar node.
*
* @param string $value Value of the string
* @param array $attributes Additional attributes
*/
public function __construct($value = '', array $attributes = array()) {
parent::__construct(
array(
'value' => $value
),
$attributes
);
}
/**
* Creates a String node from a string token (parses escape sequences).
*
* @param string $str String
* @param array $attributes Additional attributes
*
* @return PHPParser_Node_Scalar_String String Node
*/
public static function create($str, array $attributes = array()) {
$bLength = 0;
if ('b' === $str[0]) {
$bLength = 1;
}
if ('\'' === $str[$bLength]) {
$str = str_replace(
array('\\\\', '\\\''),
array( '\\', '\''),
substr($str, $bLength + 1, -1)
);
} else {
$str = self::parseEscapeSequences(substr($str, $bLength + 1, -1), '"');
}
return new self($str, $attributes);
}
/**
* Parses escape sequences in strings (all string types apart from single quoted).
*
* @param string $str String without quotes
* @param null|string $quote Quote type
*
* @return string String with escape sequences parsed
*/
public static function parseEscapeSequences($str, $quote) {
if (null !== $quote) {
$str = str_replace('\\' . $quote, $quote, $str);
}
return preg_replace_callback(
'~\\\\([\\\\$nrtfve]|[xX][0-9a-fA-F]{1,2}|[0-7]{1,3})~',
array(__CLASS__, 'parseCallback'),
$str
);
}
public static function parseCallback($matches) {
$str = $matches[1];
if (isset(self::$replacements[$str])) {
return self::$replacements[$str];
} elseif ('x' === $str[0] || 'X' === $str[0]) {
return chr(hexdec($str));
} else {
return chr(octdec($str));
}
}
/**
* Parses a constant doc string.
*
* @param string $startToken Doc string start token content (<<<SMTHG)
* @param string $str String token content
*
* @return string Parsed string
*/
public static function parseDocString($startToken, $str) {
// strip last newline (thanks tokenizer for sticking it into the string!)
$str = preg_replace('~(\r\n|\n|\r)$~', '', $str);
// nowdoc string
if (false !== strpos($startToken, '\'')) {
return $str;
}
return self::parseEscapeSequences($str, null);
}
}