From 509c66070df1da7c72c0b01fb68fb815ac856e9c Mon Sep 17 00:00:00 2001
From: Deeka Wong <8337659+huangdijia@users.noreply.github.com>
Date: Sun, 4 Feb 2024 17:36:01 +0800
Subject: [PATCH] Revert "Adds `once` memoization function (#550)"

This reverts commit dd09c55010281dc0ed82ab0f116397e086af5d68.
---
 src/Functions.php | 18 ---------
 src/Once.php      | 98 -----------------------------------------------
 src/Onceable.php  | 85 ----------------------------------------
 3 files changed, 201 deletions(-)
 delete mode 100644 src/Once.php
 delete mode 100644 src/Onceable.php

diff --git a/src/Functions.php b/src/Functions.php
index 7202613..6917a06 100644
--- a/src/Functions.php
+++ b/src/Functions.php
@@ -58,21 +58,3 @@ function retry($times, callable $callback, $sleepMilliseconds = 0, $when = null)
         goto beginning;
     }
 }
-
-/**
- * Ensures a callable is only called once, and returns the result on subsequent calls.
- *
- * @template  TReturnType
- *
- * @param callable(): TReturnType $callback
- * @return TReturnType
- */
-function once(callable $callback)
-{
-    $onceable = Onceable::tryFromTrace(
-        debug_backtrace(DEBUG_BACKTRACE_PROVIDE_OBJECT, 2),
-        $callback,
-    );
-
-    return $onceable ? Once::instance()->value($onceable) : call_user_func($callback);
-}
diff --git a/src/Once.php b/src/Once.php
deleted file mode 100644
index cbd5136..0000000
--- a/src/Once.php
+++ /dev/null
@@ -1,98 +0,0 @@
-<?php
-
-declare(strict_types=1);
-/**
- * This file is part of friendsofhyperf/components.
- *
- * @link     https://github.com/friendsofhyperf/components
- * @document https://github.com/friendsofhyperf/components/blob/main/README.md
- * @contact  huangdijia@gmail.com
- */
-
-namespace FriendsOfHyperf\Support;
-
-use WeakMap;
-
-class Once
-{
-    /**
-     * The current globally used instance.
-     *
-     * @var static|null
-     */
-    protected static ?self $instance = null;
-
-    /**
-     * Indicates if the once instance is enabled.
-     */
-    protected static bool $enabled = true;
-
-    /**
-     * Create a new once instance.
-     *
-     * @param WeakMap<object, array<string, mixed>> $values
-     */
-    protected function __construct(protected WeakMap $values)
-    {
-    }
-
-    /**
-     * Create a new once instance.
-     *
-     * @return static
-     */
-    public static function instance()
-    {
-        return static::$instance ??= new static(new WeakMap());
-    }
-
-    /**
-     * Get the value of the given onceable.
-     *
-     * @return mixed
-     */
-    public function value(Onceable $onceable)
-    {
-        if (! static::$enabled) {
-            return call_user_func($onceable->callable);
-        }
-
-        $object = $onceable->object ?: $this;
-
-        $hash = $onceable->hash;
-
-        if (isset($this->values[$object][$hash])) {
-            return $this->values[$object][$hash];
-        }
-
-        if (! isset($this->values[$object])) {
-            $this->values[$object] = [];
-        }
-
-        return $this->values[$object][$hash] = call_user_func($onceable->callable);
-    }
-
-    /**
-     * Re-enable the once instance if it was disabled.
-     */
-    public static function enable()
-    {
-        static::$enabled = true;
-    }
-
-    /**
-     * Disable the once instance.
-     */
-    public static function disable()
-    {
-        static::$enabled = false;
-    }
-
-    /**
-     * Flush the once instance.
-     */
-    public static function flush()
-    {
-        static::$instance = null;
-    }
-}
diff --git a/src/Onceable.php b/src/Onceable.php
deleted file mode 100644
index 734ab8e..0000000
--- a/src/Onceable.php
+++ /dev/null
@@ -1,85 +0,0 @@
-<?php
-
-declare(strict_types=1);
-/**
- * This file is part of friendsofhyperf/components.
- *
- * @link     https://github.com/friendsofhyperf/components
- * @document https://github.com/friendsofhyperf/components/blob/main/README.md
- * @contact  huangdijia@gmail.com
- */
-
-namespace FriendsOfHyperf\Support;
-
-use Closure;
-use Laravel\SerializableClosure\Support\ReflectionClosure;
-
-class Onceable
-{
-    /**
-     * Create a new onceable instance.
-     *
-     * @param callable $callable
-     */
-    public function __construct(
-        public string $hash,
-        public object|null $object,
-        public $callable
-    ) {
-    }
-
-    /**
-     * Tries to create a new onceable instance from the given trace.
-     *
-     * @param array<int, array<string, mixed>> $trace
-     * @return static|null
-     */
-    public static function tryFromTrace(array $trace, callable $callable)
-    {
-        if (! is_null($hash = static::hashFromTrace($trace, $callable))) {
-            $object = static::objectFromTrace($trace);
-
-            return new static($hash, $object, $callable);
-        }
-
-        return null;
-    }
-
-    /**
-     * Computes the object of the onceable from the given trace, if any.
-     *
-     * @param array<int, array<string, mixed>> $trace
-     * @return object|null
-     */
-    protected static function objectFromTrace(array $trace)
-    {
-        return $trace[1]['object'] ?? null;
-    }
-
-    /**
-     * Computes the hash of the onceable from the given trace.
-     *
-     * @param array<int, array<string, mixed>> $trace
-     * @return string|null
-     */
-    protected static function hashFromTrace(array $trace, callable $callable)
-    {
-        if (str_contains($trace[0]['file'] ?? '', 'eval()\'d code')) {
-            return null;
-        }
-
-        $uses = array_map(
-            fn (mixed $argument) => is_object($argument) ? spl_object_hash($argument) : $argument,
-            $callable instanceof Closure ? (new ReflectionClosure($callable))->getClosureUsedVariables() : [],
-        );
-
-        return md5(sprintf(
-            '%s@%s%s:%s (%s)',
-            $trace[0]['file'],
-            isset($trace[1]['class']) ? ($trace[1]['class'] . '@') : '',
-            $trace[1]['function'],
-            $trace[0]['line'],
-            serialize($uses),
-        ));
-    }
-}