<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Server
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
/**
* Zend_Server_Reflection_Node
*/
require_once 'Zend/Server/Reflection/Node.php';
/**
* Zend_Server_Reflection_Parameter
*/
require_once 'Zend/Server/Reflection/Parameter.php';
/**
* Zend_Server_Reflection_Prototype
*/
require_once 'Zend/Server/Reflection/Prototype.php';
/**
* Function/Method Reflection
*
* Decorates a ReflectionFunction. Allows setting and retrieving an alternate
* 'service' name (i.e., the name to be used when calling via a service),
* setting and retrieving the description (originally set using the docblock
* contents), retrieving the callback and callback type, retrieving additional
* method invocation arguments, and retrieving the
* method {@link Zend_Server_Reflection_Prototype prototypes}.
*
* @category Zend
* @package Zend_Server
* @subpackage Reflection
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Abstract.php 23320 2010-11-12 21:57:29Z alexander $
*/
abstract class Zend_Server_Reflection_Function_Abstract
{
/**
* @var ReflectionFunction
*/
protected $_reflection;
/**
* Additional arguments to pass to method on invocation
* @var array
*/
protected $_argv = array();
/**
* Used to store extra configuration for the method (typically done by the
* server class, e.g., to indicate whether or not to instantiate a class).
* Associative array; access is as properties via {@link __get()} and
* {@link __set()}
* @var array
*/
protected $_config = array();
/**
* Declaring class (needed for when serialization occurs)
* @var string
*/
protected $_class;
/**
* Function/method description
* @var string
*/
protected $_description = '';
/**
* Namespace with which to prefix function/method name
* @var string
*/
protected $_namespace;
/**
* Prototypes
* @var array
*/
protected $_prototypes = array();
private $_return;
private $_returnDesc;
private $_paramDesc;
private $_sigParams;
private $_sigParamsDepth;
/**
* Constructor
*
* @param ReflectionFunction $r
*/
public function __construct(Reflector $r, $namespace = null, $argv = array())
{
// In PHP 5.1.x, ReflectionMethod extends ReflectionFunction. In 5.2.x,
// both extend ReflectionFunctionAbstract. So, we can't do normal type
// hinting in the prototype, but instead need to do some explicit
// testing here.
if ((!$r instanceof ReflectionFunction)
&& (!$r instanceof ReflectionMethod)) {
require_once 'Zend/Server/Reflection/Exception.php';
throw new Zend_Server_Reflection_Exception('Invalid reflection class');
}
$this->_reflection = $r;
// Determine namespace
if (null !== $namespace){
$this->setNamespace($namespace);
}
// Determine arguments
if (is_array($argv)) {
$this->_argv = $argv;
}
// If method call, need to store some info on the class
if ($r instanceof ReflectionMethod) {
$this->_class = $r->getDeclaringClass()->getName();
}
// Perform some introspection
$this->_reflect();
}
/**
* Create signature node tree
*
* Recursive method to build the signature node tree. Increments through
* each array in {@link $_sigParams}, adding every value of the next level
* to the current value (unless the current value is null).
*
* @param Zend_Server_Reflection_Node $parent
* @param int $level
* @return void
*/
protected function _addTree(Zend_Server_Reflection_Node $parent, $level = 0)
{
if ($level >= $this->_sigParamsDepth) {
return;
}
foreach ($this->_sigParams[$level] as $value) {
$node = new Zend_Server_Reflection_Node($value, $parent);
if ((null !== $value) && ($this->_sigParamsDepth > $level + 1)) {
$this->_addTree($node, $level + 1);
}
}
}
/**
* Build the signature tree
*
* Builds a signature tree starting at the return values and descending
* through each method argument. Returns an array of
* {@link Zend_Server_Reflection_Node}s.
*
* @return array
*/
protected function _buildTree()
{
$returnTree = array();
foreach ((array) $this->_return as $value) {
$node = new Zend_Server_Reflection_Node($value);
$this->_addTree($node);
$returnTree[] = $node;
}
return $returnTree;
}
/**
* Build method signatures
*
* Builds method signatures using the array of return types and the array of
* parameters types
*
* @param array $return Array of return types
* @param string $returnDesc Return value description
* @param array $params Array of arguments (each an array of types)
* @param array $paramDesc Array of parameter descriptions
* @return array
*/
protected function _buildSignatures($return, $returnDesc, $paramTypes, $paramDesc)
{
$this->_return = $return;
$this->_returnDesc = $returnDesc;
$this->_paramDesc = $paramDesc;
$this->_sigParams = $paramTypes;
$this->_sigParamsDepth = count($paramTypes);
$signatureTrees = $this->_buildTree();
$signatures = array();
$endPoints = array();
foreach ($signatureTrees as $root) {
$tmp = $root->getEndPoints();
if (empty($tmp)) {
$endPoints = array_merge($endPoints, array($root));
} else {
$endPoints = array_merge($endPoints, $tmp);
}
}
foreach ($endPoints as $node) {
if (!$node instanceof Zend_Server_Reflection_Node) {
continue;
}
$signature = array();
do {
array_unshift($signature, $node->getValue());
$node = $node->getParent();
} while ($node instanceof Zend_Server_Reflection_Node);
$signatures[] = $signature;
}
// Build prototypes
$params = $this->_reflection->getParameters();
foreach ($signatures as $signature) {
$return = new Zend_Server_Reflection_ReturnValue(array_shift($signature), $this->_returnDesc);
$tmp = array();
foreach ($signature as $key => $type) {
$param = new Zend_Server_Reflection_Parameter($params[$key], $type, (isset($this->_paramDesc[$key]) ? $this->_paramDesc[$key] : null));
$param->setPosition($key);
$tmp[] = $param;
}
$this->_prototypes[] = new Zend_Server_Reflection_Prototype($return, $tmp);
}
}
/**
* Use code reflection to create method signatures
*
* Determines the method help/description text from the function DocBlock
* comment. Determines method signatures using a combination of
* ReflectionFunction and parsing of DocBlock @param and @return values.
*
* @param ReflectionFunction $function
* @return array
*/
protected function _reflect()
{
$function = $this->_reflection;
$helpText = '';
$signatures = array();
$returnDesc = '';
$paramCount = $function->getNumberOfParameters();
$paramCountRequired = $function->getNumberOfRequiredParameters();
$parameters = $function->getParameters();
$docBlock = $function->getDocComment();
if (!empty($docBlock)) {
// Get help text
if (preg_match(':/\*\*\s*\r?\n\s*\*\s(.*?)\r?\n\s*\*(\s@|/):s', $docBlock, $matches))
{
$helpText = $matches[1];
$helpText = preg_replace('/(^\s*\*\s)/m', '', $helpText);
$helpText = preg_replace('/\r?\n\s*\*\s*(\r?\n)*/s', "\n", $helpText);
$helpText = trim($helpText);
}
// Get return type(s) and description
$return = 'void';
if (preg_match('/@return\s+(\S+)/', $docBlock, $matches)) {
$return = explode('|', $matches[1]);
if (preg_match('/@return\s+\S+\s+(.*?)(@|\*\/)/s', $docBlock, $matches))
{
$value = $matches[1];
$value = preg_replace('/\s?\*\s/m', '', $value);
$value = preg_replace('/\s{2,}/', ' ', $value);
$returnDesc = trim($value);
}
}
// Get param types and description
if (preg_match_all('/@param\s+([^\s]+)/m', $docBlock, $matches)) {
$paramTypesTmp = $matches[1];
if (preg_match_all('/@param\s+\S+\s+(\$\S+)\s+(.*?)(?=@|\*\/)/s', $docBlock, $matches))
{
$paramDesc = $matches[2];
foreach ($paramDesc as $key => $value) {
$value = preg_replace('/\s?\*\s/m', '', $value);
$value = preg_replace('/\s{2,}/', ' ', $value);
$paramDesc[$key] = trim($value);
}
}
}
} else {
$helpText = $function->getName();
$return = 'void';
// Try and auto-determine type, based on reflection
$paramTypesTmp = array();
foreach ($parameters as $i => $param) {
$paramType = 'mixed';
if ($param->isArray()) {
$paramType = 'array';
}
$paramTypesTmp[$i] = $paramType;
}
}
// Set method description
$this->setDescription($helpText);
// Get all param types as arrays
if (!isset($paramTypesTmp) && (0 < $paramCount)) {
$paramTypesTmp = array_fill(0, $paramCount, 'mixed');
} elseif (!isset($paramTypesTmp)) {
$paramTypesTmp = array();
} elseif (count($paramTypesTmp) < $paramCount) {
$start = $paramCount - count($paramTypesTmp);
for ($i = $start; $i < $paramCount; ++$i) {
$paramTypesTmp[$i] = 'mixed';
}
}
// Get all param descriptions as arrays
if (!isset($paramDesc) && (0 < $paramCount)) {
$paramDesc = array_fill(0, $paramCount, '');
} elseif (!isset($paramDesc)) {
$paramDesc = array();
} elseif (count($paramDesc) < $paramCount) {
$start = $paramCount - count($paramDesc);
for ($i = $start; $i < $paramCount; ++$i) {
$paramDesc[$i] = '';
}
}
if (count($paramTypesTmp) != $paramCount) {
require_once 'Zend/Server/Reflection/Exception.php';
throw new Zend_Server_Reflection_Exception(
'Variable number of arguments is not supported for services (except optional parameters). '
. 'Number of function arguments in ' . $function->getDeclaringClass()->getName() . '::'
. $function->getName() . '() must correspond to actual number of arguments described in the '
. 'docblock.');
}
$paramTypes = array();
foreach ($paramTypesTmp as $i => $param) {
$tmp = explode('|', $param);
if ($parameters[$i]->isOptional()) {
array_unshift($tmp, null);
}
$paramTypes[] = $tmp;
}
$this->_buildSignatures($return, $returnDesc, $paramTypes, $paramDesc);
}
/**
* Proxy reflection calls
*
* @param string $method
* @param array $args
* @return mixed
*/
public function __call($method, $args)
{
if (method_exists($this->_reflection, $method)) {
return call_user_func_array(array($this->_reflection, $method), $args);
}
require_once 'Zend/Server/Reflection/Exception.php';
throw new Zend_Server_Reflection_Exception('Invalid reflection method ("' .$method. '")');
}
/**
* Retrieve configuration parameters
*
* Values are retrieved by key from {@link $_config}. Returns null if no
* value found.
*
* @param string $key
* @return mixed
*/
public function __get($key)
{
if (isset($this->_config[$key])) {
return $this->_config[$key];
}
return null;
}
/**
* Set configuration parameters
*
* Values are stored by $key in {@link $_config}.
*
* @param string $key
* @param mixed $value
* @return void
*/
public function __set($key, $value)
{
$this->_config[$key] = $value;
}
/**
* Set method's namespace
*
* @param string $namespace
* @return void
*/
public function setNamespace($namespace)
{
if (empty($namespace)) {
$this->_namespace = '';
return;
}
if (!is_string($namespace) || !preg_match('/[a-z0-9_\.]+/i', $namespace)) {
require_once 'Zend/Server/Reflection/Exception.php';
throw new Zend_Server_Reflection_Exception('Invalid namespace');
}
$this->_namespace = $namespace;
}
/**
* Return method's namespace
*
* @return string
*/
public function getNamespace()
{
return $this->_namespace;
}
/**
* Set the description
*
* @param string $string
* @return void
*/
public function setDescription($string)
{
if (!is_string($string)) {
require_once 'Zend/Server/Reflection/Exception.php';
throw new Zend_Server_Reflection_Exception('Invalid description');
}
$this->_description = $string;
}
/**
* Retrieve the description
*
* @return void
*/
public function getDescription()
{
return $this->_description;
}
/**
* Retrieve all prototypes as array of
* {@link Zend_Server_Reflection_Prototype Zend_Server_Reflection_Prototypes}
*
* @return array
*/
public function getPrototypes()
{
return $this->_prototypes;
}
/**
* Retrieve additional invocation arguments
*
* @return array
*/
public function getInvokeArguments()
{
return $this->_argv;
}
/**
* Wakeup from serialization
*
* Reflection needs explicit instantiation to work correctly. Re-instantiate
* reflection object on wakeup.
*
* @return void
*/
public function __wakeup()
{
if ($this->_reflection instanceof ReflectionMethod) {
$class = new ReflectionClass($this->_class);
$this->_reflection = new ReflectionMethod($class->newInstance(), $this->getName());
} else {
$this->_reflection = new ReflectionFunction($this->getName());
}
}
}