177 lines
4.9 KiB
PHP
177 lines
4.9 KiB
PHP
<?php
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declare(strict_types=1);
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/*
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* This file is part of PHP CS Fixer.
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*
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* (c) Fabien Potencier <fabien@symfony.com>
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* Dariusz Rumiński <dariusz.ruminski@gmail.com>
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*
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* This source file is subject to the MIT license that is bundled
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* with this source code in the file LICENSE.
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*/
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namespace PhpCsFixer;
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use PhpCsFixer\Fixer\FixerInterface;
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use PhpCsFixer\Tokenizer\Token;
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/**
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* @author Dariusz Rumiński <dariusz.ruminski@gmail.com>
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* @author Graham Campbell <hello@gjcampbell.co.uk>
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* @author Odín del Río <odin.drp@gmail.com>
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*
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* @internal
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*/
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final class Utils
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{
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/**
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* @var array<string, true>
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*/
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private static array $deprecations = [];
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private function __construct()
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{
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// cannot create instance of util. class
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}
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/**
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* Converts a camel cased string to a snake cased string.
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*/
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public static function camelCaseToUnderscore(string $string): string
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{
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return mb_strtolower(Preg::replace('/(?<!^)((?=[\p{Lu}][^\p{Lu}])|(?<![\p{Lu}])(?=[\p{Lu}]))/', '_', $string));
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}
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/**
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* Calculate the trailing whitespace.
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*
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* What we're doing here is grabbing everything after the final newline.
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*/
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public static function calculateTrailingWhitespaceIndent(Token $token): string
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{
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if (!$token->isWhitespace()) {
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throw new \InvalidArgumentException(sprintf('The given token must be whitespace, got "%s".', $token->getName()));
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}
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$str = strrchr(
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str_replace(["\r\n", "\r"], "\n", $token->getContent()),
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"\n"
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);
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if (false === $str) {
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return '';
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}
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return ltrim($str, "\n");
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}
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/**
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* Perform stable sorting using provided comparison function.
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*
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* Stability is ensured by using Schwartzian transform.
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*
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* @param mixed[] $elements
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* @param callable $getComparedValue a callable that takes a single element and returns the value to compare
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* @param callable $compareValues a callable that compares two values
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*
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* @return mixed[]
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*/
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public static function stableSort(array $elements, callable $getComparedValue, callable $compareValues): array
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{
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array_walk($elements, static function (&$element, int $index) use ($getComparedValue): void {
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$element = [$element, $index, $getComparedValue($element)];
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});
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usort($elements, static function ($a, $b) use ($compareValues): int {
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$comparison = $compareValues($a[2], $b[2]);
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if (0 !== $comparison) {
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return $comparison;
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}
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return $a[1] <=> $b[1];
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});
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return array_map(static function (array $item) {
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return $item[0];
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}, $elements);
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}
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/**
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* Sort fixers by their priorities.
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*
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* @param FixerInterface[] $fixers
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*
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* @return FixerInterface[]
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*/
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public static function sortFixers(array $fixers): array
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{
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// Schwartzian transform is used to improve the efficiency and avoid
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// `usort(): Array was modified by the user comparison function` warning for mocked objects.
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return self::stableSort(
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$fixers,
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static function (FixerInterface $fixer): int {
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return $fixer->getPriority();
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},
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static function (int $a, int $b): int {
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return $b <=> $a;
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}
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);
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}
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/**
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* Join names in natural language wrapped in backticks, e.g. `a`, `b` and `c`.
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*
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* @param string[] $names
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*
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* @throws \InvalidArgumentException
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*/
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public static function naturalLanguageJoinWithBackticks(array $names): string
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{
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if (0 === \count($names)) {
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throw new \InvalidArgumentException('Array of names cannot be empty.');
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}
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$names = array_map(static function (string $name): string {
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return sprintf('`%s`', $name);
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}, $names);
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$last = array_pop($names);
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if (\count($names) > 0) {
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return implode(', ', $names).' and '.$last;
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}
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return $last;
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}
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public static function triggerDeprecation(\Exception $futureException): void
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{
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if (getenv('PHP_CS_FIXER_FUTURE_MODE')) {
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throw new \RuntimeException(
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'Your are using something deprecated, see previous exception. Aborting execution because `PHP_CS_FIXER_FUTURE_MODE` environment variable is set.',
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0,
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$futureException
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);
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}
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$message = $futureException->getMessage();
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self::$deprecations[$message] = true;
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@trigger_error($message, E_USER_DEPRECATED);
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}
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/**
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* @return list<string>
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*/
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public static function getTriggeredDeprecations(): array
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{
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$triggeredDeprecations = array_keys(self::$deprecations);
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sort($triggeredDeprecations);
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return $triggeredDeprecations;
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}
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}
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