从课堂上获取使用声明 [英] Get use statement from class

问题描述

不确定最好的标题，但我会尽我所能解释.假设我有以下文件:

Not quite sure of the best title but I will explain what I am asking as best I can. Assume I have the following file:

MyCustomClass.php

<?php    

namespace MyNamespace;

use FooNamespace\FooClass;
use BarNamespace\BarClass as Bar;
use BazNamespace\BazClass as BazSpecial;

class MyCustomClass {

    protected $someDependencies = [];

    public function __construct(FooClass $foo, Bar $bar) {

        $someDependencies[] = $foo;
        $someDependencies[] = $bar;
    }
}

现在，如果我要使用反射，则可以从构造的类型提示中获取完全限定的类名称.

Now if I were to use reflection, I could get the fully qualified class names from the type hints in the construct.

但是，我会收到FooNamespace\FooClass和BarNamespace\BarClass.不是，FooNamespace\FooClass和BarNamespace\Bar.我也不会引用BazNamespace\BazClass.

However, I would recieve FooNamespace\FooClass and BarNamespace\BarClass. Not, FooNamespace\FooClass and BarNamespace\Bar. I would also get no reference to BazNamespace\BazClass.

基本上，我的问题是:如何在仅知道FooClass，Bar和BazSpecial的情况下从MyCustomClass.php获取完全限定的名称?

Basically, my question is: How can I get the fully qualified names from MyCustomClass.php while only knowing FooClass, Bar, and, BazSpecial?

我不想使用文件解析器，因为这会影响性能.我希望能够做类似的事情:

I do not want to use a file parser as this will eat performance. I want to be able to do something like:

$class = new ReflectionClass('MyCustomClass');
...
$class->getUsedClass('FooClass'); // FooNamespace\FooClass
$class->getUsedClass('Bar'); // BarNamespace\BarClass
$class->getUsedClass('BazSpecial'); // BazNamespace\BazClass

我该怎么做?

推荐答案

由于没有人回答，我认为没有简单的方法可以实现这一目标.因此，我创建了自己的名为ExtendedReflectionClass的类，该类可以满足我的需求.

Seeing as no one has answered, I assume there is not an easy way to achieve this. I have therefore created my own class called ExtendedReflectionClass which achieves what I need.

我用类文件和自述文件创建了要点，该文件位于底部，因此可以滚动！！

I have created a gist with the class file and a readme, which is at the bottom so get scrolling!.

ExtendedReflectionClass

用法示例:

require 'ExtendedReflectionClass.php';
require 'MyCustomClass.php';

$class = new ExtendedReflectionClass('MyNamespace\Test\MyCustomClass');

$class->getUseStatements();    
// [
//     [
//         'class' => 'FooNamespace\FooClass',
//         'as' => 'FooClass'
//     ],
//     [
//         'class' => 'BarNamespace\BarClass',
//         'as' => 'Bar'
//     ],
//     [
//         'class' => 'BazNamespace\BazClass',
//         'as' => 'BazSpecial'
//     ]
// ]

$class->hasUseStatement('FooClass'); // true
$class->hasUseStatement('BarNamespace\BarClass'); // true
$class->hasUseStatement('BazSpecial'); // true

$class->hasUseStatement('SomeNamespace\SomeClass'); // false

这篇关于从课堂上获取使用声明的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！