From 196ac105055986a176e064c1a221f781572f8588 Mon Sep 17 00:00:00 2001
From: Jordi Boggiano <j.boggiano@seld.be>
Date: Fri, 23 Jun 2023 10:57:56 +0200
Subject: [PATCH] Remove dead code

---
 src/Composer/Autoload/PhpFileCleaner.php | 247 -----------------------
 1 file changed, 247 deletions(-)
 delete mode 100644 src/Composer/Autoload/PhpFileCleaner.php

diff --git a/src/Composer/Autoload/PhpFileCleaner.php b/src/Composer/Autoload/PhpFileCleaner.php
deleted file mode 100644
index 0c00f878b..000000000
--- a/src/Composer/Autoload/PhpFileCleaner.php
+++ /dev/null
@@ -1,247 +0,0 @@
-<?php declare(strict_types=1);
-
-/*
- * This file is part of Composer.
- *
- * (c) Nils Adermann <naderman@naderman.de>
- *     Jordi Boggiano <j.boggiano@seld.be>
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-namespace Composer\Autoload;
-
-use Composer\Pcre\Preg;
-
-/**
- * @author Jordi Boggiano <j.boggiano@seld.be>
- * @internal
- */
-class PhpFileCleaner
-{
-    /** @var array<array{name: string, length: int, pattern: non-empty-string}> */
-    private static $typeConfig;
-
-    /** @var non-empty-string */
-    private static $restPattern;
-
-    /**
-     * @readonly
-     * @var string
-     */
-    private $contents;
-
-    /**
-     * @readonly
-     * @var int
-     */
-    private $len;
-
-    /**
-     * @readonly
-     * @var int
-     */
-    private $maxMatches;
-
-    /** @var int */
-    private $index = 0;
-
-    /**
-     * @param string[] $types
-     */
-    public static function setTypeConfig(array $types): void
-    {
-        foreach ($types as $type) {
-            self::$typeConfig[$type[0]] = [
-                'name' => $type,
-                'length' => \strlen($type),
-                'pattern' => '{.\b(?<![\$:>])'.$type.'\s++[a-zA-Z_\x7f-\xff:][a-zA-Z0-9_\x7f-\xff:\-]*+}Ais',
-            ];
-        }
-
-        self::$restPattern = '{[^?"\'</'.implode('', array_keys(self::$typeConfig)).']+}A';
-    }
-
-    public function __construct(string $contents, int $maxMatches)
-    {
-        $this->contents = $contents;
-        $this->len = \strlen($this->contents);
-        $this->maxMatches = $maxMatches;
-    }
-
-    public function clean(): string
-    {
-        $clean = '';
-
-        while ($this->index < $this->len) {
-            $this->skipToPhp();
-            $clean .= '<?';
-
-            while ($this->index < $this->len) {
-                $char = $this->contents[$this->index];
-                if ($char === '?' && $this->peek('>')) {
-                    $clean .= '?>';
-                    $this->index += 2;
-                    continue 2;
-                }
-
-                if ($char === '"') {
-                    $this->skipString('"');
-                    $clean .= 'null';
-                    continue;
-                }
-
-                if ($char === "'") {
-                    $this->skipString("'");
-                    $clean .= 'null';
-                    continue;
-                }
-
-                if ($char === "<" && $this->peek('<') && $this->match('{<<<[ \t]*+([\'"]?)([a-zA-Z_\x80-\xff][a-zA-Z0-9_\x80-\xff]*+)\\1(?:\r\n|\n|\r)}A', $match)) {
-                    $this->index += \strlen($match[0]);
-                    $this->skipHeredoc($match[2]);
-                    $clean .= 'null';
-                    continue;
-                }
-
-                if ($char === '/') {
-                    if ($this->peek('/')) {
-                        $this->skipToNewline();
-                        continue;
-                    }
-                    if ($this->peek('*')) {
-                        $this->skipComment();
-                        continue;
-                    }
-                }
-
-                if ($this->maxMatches === 1 && isset(self::$typeConfig[$char])) {
-                    $type = self::$typeConfig[$char];
-                    if (
-                        \substr($this->contents, $this->index, $type['length']) === $type['name']
-                        && Preg::isMatch($type['pattern'], $this->contents, $match, 0, $this->index - 1)
-                    ) {
-                        $clean .= $match[0];
-
-                        return $clean;
-                    }
-                }
-
-                $this->index += 1;
-                if ($this->match(self::$restPattern, $match)) {
-                    $clean .= $char . $match[0];
-                    $this->index += \strlen($match[0]);
-                } else {
-                    $clean .= $char;
-                }
-            }
-        }
-
-        return $clean;
-    }
-
-    private function skipToPhp(): void
-    {
-        while ($this->index < $this->len) {
-            if ($this->contents[$this->index] === '<' && $this->peek('?')) {
-                $this->index += 2;
-                break;
-            }
-
-            $this->index += 1;
-        }
-    }
-
-    private function skipString(string $delimiter): void
-    {
-        $this->index += 1;
-        while ($this->index < $this->len) {
-            if ($this->contents[$this->index] === '\\' && ($this->peek('\\') || $this->peek($delimiter))) {
-                $this->index += 2;
-                continue;
-            }
-            if ($this->contents[$this->index] === $delimiter) {
-                $this->index += 1;
-                break;
-            }
-            $this->index += 1;
-        }
-    }
-
-    private function skipComment(): void
-    {
-        $this->index += 2;
-        while ($this->index < $this->len) {
-            if ($this->contents[$this->index] === '*' && $this->peek('/')) {
-                $this->index += 2;
-                break;
-            }
-
-            $this->index += 1;
-        }
-    }
-
-    private function skipToNewline(): void
-    {
-        while ($this->index < $this->len) {
-            if ($this->contents[$this->index] === "\r" || $this->contents[$this->index] === "\n") {
-                return;
-            }
-            $this->index += 1;
-        }
-    }
-
-    private function skipHeredoc(string $delimiter): void
-    {
-        $firstDelimiterChar = $delimiter[0];
-        $delimiterLength = \strlen($delimiter);
-        $delimiterPattern = '{'.preg_quote($delimiter).'(?![a-zA-Z0-9_\x80-\xff])}A';
-
-        while ($this->index < $this->len) {
-            // check if we find the delimiter after some spaces/tabs
-            switch ($this->contents[$this->index]) {
-                case "\t":
-                case " ":
-                    $this->index += 1;
-                    continue 2;
-                case $firstDelimiterChar:
-                    if (
-                        \substr($this->contents, $this->index, $delimiterLength) === $delimiter
-                        && $this->match($delimiterPattern)
-                    ) {
-                        $this->index += $delimiterLength;
-
-                        return;
-                    }
-                    break;
-            }
-
-            // skip the rest of the line
-            while ($this->index < $this->len) {
-                $this->skipToNewline();
-
-                // skip newlines
-                while ($this->index < $this->len && ($this->contents[$this->index] === "\r" || $this->contents[$this->index] === "\n")) {
-                    $this->index += 1;
-                }
-
-                break;
-            }
-        }
-    }
-
-    private function peek(string $char): bool
-    {
-        return $this->index + 1 < $this->len && $this->contents[$this->index + 1] === $char;
-    }
-
-    /**
-     * @param non-empty-string $regex
-     * @param null|array<int, string> $match
-     */
-    private function match($regex, ?array &$match = null): bool
-    {
-        return Preg::isMatch($regex, $this->contents, $match, 0, $this->index);
-    }
-}