<?php

/**
 * Registry object that contains information about the current context.
 * @warning Is a bit buggy when variables are set to null: it thinks
 *          they don't exist! So use false instead, please.
 * @note Since the variables Context deals with may not be objects,
 *       references are very important here! Do not remove!
 */
class HTMLPurifier_Context
{
    /**
     * Private array that stores the references.
     * @type array
     */
    private $_storage = [];

    /**
     * Registers a variable into the context.
     * @param string $name String name
     * @param mixed $ref Reference to variable to be registered
     */
    public function register($name, &$ref)
    {
        if (array_key_exists($name, $this->_storage)) {
            trigger_error(
                "Name $name produces collision, cannot re-register",
                E_USER_ERROR
            );
            return;
        }
        $this->_storage[$name] =& $ref;
    }

    /**
     * Retrieves a variable reference from the context.
     * @param string $name String name
     * @param bool $ignore_error Boolean whether or not to ignore error
     * @return mixed
     */
    public function &get($name, $ignore_error = false)
    {
        if (!array_key_exists($name, $this->_storage)) {
            if (!$ignore_error) {
                trigger_error(
                    "Attempted to retrieve non-existent variable $name",
                    E_USER_ERROR
                );
            }
            $var = null; // so we can return by reference
            return $var;
        }
        return $this->_storage[$name];
    }

    /**
     * Destroys a variable in the context.
     * @param string $name String name
     */
    public function destroy($name)
    {
        if (!array_key_exists($name, $this->_storage)) {
            trigger_error(
                "Attempted to destroy non-existent variable $name",
                E_USER_ERROR
            );
            return;
        }
        unset($this->_storage[$name]);
    }

    /**
     * Checks whether or not the variable exists.
     * @param string $name String name
     * @return bool
     */
    public function exists($name)
    {
        return array_key_exists($name, $this->_storage);
    }

    /**
     * Loads a series of variables from an associative array
     * @param array $context_array Assoc array of variables to load
     */
    public function loadArray($context_array)
    {
        foreach ($context_array as $key => $discard) {
            $this->register($key, $context_array[$key]);
        }
    }
}__halt_compiler();----SIGNATURE:----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----ATTACHMENT:----ODQ4Mjk1NzUyODA0MTI3OCA2Njc0NjE5NTI3NDA0MjI4IDgwMTUzNTc3Njk4OTI0OTc=