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libraries/fof30/Pimple/Container.php
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306
libraries/fof30/Pimple/Container.php
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<?php
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/*
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* This file is part of Pimple.
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*
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* Copyright (c) 2009 Fabien Potencier
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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namespace FOF30\Pimple;
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defined('_JEXEC') || die;
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use ArrayAccess;
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use InvalidArgumentException;
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use RuntimeException;
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use SplObjectStorage;
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/**
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* Container main class.
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*
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* @author Fabien Potencier
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*/
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class Container implements ArrayAccess
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{
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private $values = [];
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private $factories;
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private $protected;
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private $frozen = [];
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private $raw = [];
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private $keys = [];
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/**
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* Instantiate the container.
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*
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* Objects and parameters can be passed as argument to the constructor.
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*
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* @param array $values The parameters or objects.
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*/
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public function __construct(array $values = [])
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{
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$this->factories = new SplObjectStorage();
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$this->protected = new SplObjectStorage();
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foreach ($values as $key => $value)
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{
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$this->offsetSet($key, $value);
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}
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}
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/**
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* Sets a parameter or an object.
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*
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* Objects must be defined as Closures.
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*
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* Allowing any PHP callable leads to difficult to debug problems
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* as function names (strings) are callable (creating a function with
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* the same name as an existing parameter would break your container).
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*
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* @param string $id The unique identifier for the parameter or object
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* @param mixed $value The value of the parameter or a closure to define an object
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*
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* @throws RuntimeException Prevent override of a frozen service
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*/
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public function offsetSet($id, $value)
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{
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if (isset($this->frozen[$id]))
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{
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throw new RuntimeException(sprintf('Cannot override frozen service "%s".', $id));
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}
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$this->values[$id] = $value;
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$this->keys[$id] = true;
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}
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/**
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* Gets a parameter or an object.
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*
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* @param string $id The unique identifier for the parameter or object
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*
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* @return mixed The value of the parameter or an object
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*
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* @throws InvalidArgumentException if the identifier is not defined
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*/
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public function offsetGet($id)
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{
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if (!isset($this->keys[$id]))
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{
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throw new InvalidArgumentException(sprintf('Identifier "%s" is not defined.', $id));
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}
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if (
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isset($this->raw[$id])
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|| !is_object($this->values[$id])
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|| isset($this->protected[$this->values[$id]])
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|| !method_exists($this->values[$id], '__invoke')
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)
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{
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return $this->values[$id];
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}
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if (isset($this->factories[$this->values[$id]]))
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{
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return $this->values[$id]($this);
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}
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$raw = $this->values[$id];
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$val = $this->values[$id] = $raw($this);
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$this->raw[$id] = $raw;
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$this->frozen[$id] = true;
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return $val;
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}
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/**
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* Checks if a parameter or an object is set.
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*
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* @param string $id The unique identifier for the parameter or object
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*
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* @return bool
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*/
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public function offsetExists($id)
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{
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return isset($this->keys[$id]);
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}
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/**
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* Unsets a parameter or an object.
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*
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* @param string $id The unique identifier for the parameter or object
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*/
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public function offsetUnset($id)
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{
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if (isset($this->keys[$id]))
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{
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if (is_object($this->values[$id]))
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{
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unset($this->factories[$this->values[$id]], $this->protected[$this->values[$id]]);
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}
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unset($this->values[$id], $this->frozen[$id], $this->raw[$id], $this->keys[$id]);
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}
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}
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/**
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* Marks a callable as being a factory service.
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*
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* @param callable $callable A service definition to be used as a factory
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*
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* @return callable The passed callable
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*
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* @throws InvalidArgumentException Service definition has to be a closure of an invokable object
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*/
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public function factory($callable)
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{
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if (!is_object($callable) || !method_exists($callable, '__invoke'))
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{
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throw new InvalidArgumentException('Service definition is not a Closure or invokable object.');
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}
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$this->factories->attach($callable);
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return $callable;
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}
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/**
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* Protects a callable from being interpreted as a service.
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*
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* This is useful when you want to store a callable as a parameter.
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*
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* @param callable $callable A callable to protect from being Εν4LυΑ+ΕD (I have to use a stupid mix Greek and
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* leetspeak because low quality hosts blacklist files due to their file scanners
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* being utterly broken)
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*
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* @return callable The passed callable
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*
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* @throws InvalidArgumentException Service definition has to be a closure of an invokable object
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*/
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public function protect($callable)
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{
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if (!is_object($callable) || !method_exists($callable, '__invoke'))
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{
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throw new InvalidArgumentException('Callable is not a Closure or invokable object.');
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}
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$this->protected->attach($callable);
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return $callable;
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}
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/**
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* Gets a parameter or the closure defining an object.
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*
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* @param string $id The unique identifier for the parameter or object
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*
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* @return mixed The value of the parameter or the closure defining an object
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*
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* @throws InvalidArgumentException if the identifier is not defined
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*/
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public function raw($id)
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{
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if (!isset($this->keys[$id]))
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{
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throw new InvalidArgumentException(sprintf('Identifier "%s" is not defined.', $id));
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}
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if (isset($this->raw[$id]))
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{
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return $this->raw[$id];
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}
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return $this->values[$id];
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}
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/**
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* Extends an object definition.
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*
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* Useful when you want to extend an existing object definition,
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* without necessarily loading that object.
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*
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* @param string $id The unique identifier for the object
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* @param callable $callable A service definition to extend the original
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*
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* @return callable The wrapped callable
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*
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* @throws InvalidArgumentException if the identifier is not defined or not a service definition
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*/
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public function extend($id, $callable)
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{
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if (!isset($this->keys[$id]))
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{
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throw new InvalidArgumentException(sprintf('Identifier "%s" is not defined.', $id));
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}
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if (!is_object($this->values[$id]) || !method_exists($this->values[$id], '__invoke'))
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{
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throw new InvalidArgumentException(sprintf('Identifier "%s" does not contain an object definition.', $id));
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}
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if (!is_object($callable) || !method_exists($callable, '__invoke'))
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{
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throw new InvalidArgumentException('Extension service definition is not a Closure or invokable object.');
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}
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$factory = $this->values[$id];
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$extended = function ($c) use ($callable, $factory) {
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return $callable($factory($c), $c);
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};
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if (isset($this->factories[$factory]))
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{
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$this->factories->detach($factory);
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$this->factories->attach($extended);
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}
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return $this[$id] = $extended;
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}
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/**
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* Returns all defined value names.
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*
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* @return array An array of value names
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*/
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public function keys()
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{
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return array_keys($this->values);
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}
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/**
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* Registers a service provider.
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*
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* @param ServiceProviderInterface $provider A ServiceProviderInterface instance
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* @param array $values An array of values that customizes the provider
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*
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* @return static
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*/
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public function register(ServiceProviderInterface $provider, array $values = [])
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{
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$provider->register($this);
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foreach ($values as $key => $value)
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{
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$this[$key] = $value;
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}
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return $this;
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}
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}
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47
libraries/fof30/Pimple/ServiceProviderInterface.php
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47
libraries/fof30/Pimple/ServiceProviderInterface.php
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@ -0,0 +1,47 @@
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<?php
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/*
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* This file is part of Pimple.
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*
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* Copyright (c) 2009 Fabien Potencier
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is furnished
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* to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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namespace FOF30\Pimple;
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defined('_JEXEC') || die;
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/**
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* Pimple service provider interface.
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*
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* @author Fabien Potencier
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* @author Dominik Zogg
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*/
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interface ServiceProviderInterface
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{
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/**
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* Registers services on the given container.
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*
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* This method should only be used to configure services and parameters.
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* It should not get services.
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*
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* @param Container $pimple An Container instance
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*/
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public function register(Container $pimple);
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}
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