%PDF-
%PDF-
Mini Shell
Mini Shell
<?php
/**
* SCSSPHP
*
* @copyright 2012-2020 Leaf Corcoran
*
* @license http://opensource.org/licenses/MIT MIT
*
* @link http://scssphp.github.io/scssphp
*/
namespace ScssPhp\ScssPhp\Util;
/**
* @internal
*/
final class Character
{
/**
* Returns whether $character is an ASCII whitespace character.
*/
public static function isWhitespace(?string $character): bool
{
return $character === ' ' || $character === "\t" || $character === "\n" || $character === "\r" || $character === "\f";
}
/**
* Returns whether $character is a space or a tab character.
*/
public static function isSpaceOrTab(?string $character): bool
{
return $character === ' ' || $character === "\t";
}
/**
* Returns whether $character is an ASCII newline character.
*/
public static function isNewline(?string $character): bool
{
return $character === "\n" || $character === "\r" || $character === "\f";
}
/**
* Returns whether $character is a letter or a number.
*/
public static function isAlphanumeric(string $character): bool
{
return self::isAlphabetic($character) || self::isDigit($character);
}
/**
* Returns whether $character is a letter.
*/
public static function isAlphabetic(string $character): bool
{
$charCode = \ord($character);
return ($charCode >= \ord('a') && $charCode <= \ord('z')) || ($charCode >= \ord('A') && $charCode <= \ord('Z'));
}
/**
* Returns whether $character is a digit.
*/
public static function isDigit(?string $character): bool
{
if ($character === null) {
return false;
}
$charCode = \ord($character);
return $charCode >= \ord('0') && $charCode <= \ord('9');
}
/**
* Returns whether $character is legal as the start of a Sass identifier.
*/
public static function isNameStart(string $character): bool
{
return $character === '_' || self::isAlphabetic($character) || \ord($character) >= 0x80;
}
/**
* Returns whether $character is legal in the body of a Sass identifier.
*/
public static function isName(string $character): bool
{
return self::isNameStart($character) || self::isDigit($character) || $character === '-';
}
/**
* Returns whether $character is a hexadecimal digit.
*/
public static function isHex(?string $character): bool
{
if ($character === null) {
return false;
}
if (self::isDigit($character)) {
return true;
}
$charCode = \ord($character);
if ($charCode >= \ord('a') && $charCode <= \ord('f')) {
return true;
}
if ($charCode >= \ord('A') && $charCode <= \ord('F')) {
return true;
}
return false;
}
/**
* Returns whether $character can start a simple selector other than a type
* selector.
*/
public static function isSimpleSelectorStart(?string $character): bool
{
return $character === '*' || $character === '[' || $character === '.' || $character === '#' || $character === '%' || $character === ':';
}
/**
* Returns whether $identifier is module-private.
*
* Assumes $identifier is a valid Sass identifier.
*/
public static function isPrivate(string $identifier): bool
{
$first = $identifier[0];
return $first === '-' || $first === '_';
}
/**
* Assumes that $character is a left-hand brace-like character, and returns
* the right-hand version.
*/
public static function opposite(string $character): string
{
switch ($character) {
case '(':
return ')';
case '{':
return '}';
case '[':
return ']';
default:
throw new \InvalidArgumentException(sprintf('Expected a brace character. Got "%s"', $character));
}
}
}
Zerion Mini Shell 1.0