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178 lines
5.1 KiB
Markdown
178 lines
5.1 KiB
Markdown
# Rector - Upgrade your Legacy App to Modern Codebase
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Rector is a **rec**onstruc**tor** tool - it does **instant upgrades** and **instant refactoring** of your code.
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I mean, why do it manually if 80 % can Rector handle for you?
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[](https://travis-ci.org/rectorphp/rector)
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[](https://packagist.org/packages/rector/rector)
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Rector **instantly upgrades PHP & YAML code of your application**, with focus on open-source projects:
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<p align="center">
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<a href="/config/level/symfony"><img src="/docs/images/symfony.png"></a>
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<img src="/docs/images/space.png" width=20>
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<a href="/config/level/sylius"><img src="/docs/images/sylius.png"></a>
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<img src="/docs/images/space.png" width=20>
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<a href="/config/level/phpunit"><img src="/docs/images/phpunit.jpg"></a>
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<img src="/docs/images/space.png" width=20>
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<a href="/config/level/twig"><img src="/docs/images/twig.png"></a>
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<img src="/docs/images/space.png" width=20>
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<a href="/config/level/cakephp"><img src="/docs/images/cakephp.png"></a>
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<img src="/docs/images/space.png" width=20>
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<a href="/config/level/silverstripe"><img src="/docs/images/silverstripe.jpg"></a>
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</p>
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**Rector can**:
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- Rename classes, methods and properties
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- Rename partial namespace
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- Rename pseudo-namespace to namespace
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- Add, replace or remove arguments
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- Add arguments or return typehint
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- Change visibility of constant, property or method
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- And much more...
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...just **look at overview of [all available Rectors](/docs/AllRectorsOverview.md)** with before/after diffs and configuration examples. It's all you really need to use build your own sets.
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## Install
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```bash
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composer require rector/rector --dev
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```
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**Do you have conflicts on `composer require`?**
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Install [prefixed version](https://github.com/rectorphp/rector-prefixed) with isolated dependencies.
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### Extra Autoloading
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Rector relies on project and autoloading of its classes. To specify own autoload file, use `--autoload-file` option:
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```bash
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vendor/bin/rector process ../project --autoload-file ../project/vendor/autoload.php
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```
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Or make use of `rector.yml` config:
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```yaml
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# rector.yml
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parameters:
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autoload_paths:
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- '%kernel.project_dir%/vendor/squizlabs/php_codesniffer/autoload.php'
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- '%kernel.project_dir%/vendor/project-without-composer'
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```
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You can also **exclude files or directories** - use regex or [fnmatch](http://php.net/manual/en/function.fnmatch.php):
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```yaml
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# rector.yml
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parameters:
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exclude_paths:
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- '*/src/*/Tests/*'
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```
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## How to Reconstruct your Code
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### A. Prepared Sets
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Featured open-source projects have **prepared sets**. You'll find them in [`/config/level`](/config/level).
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Do you need to upgrade to **Symfony 4.0**, for example?
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1. Run rector on your `/src` directory:
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```bash
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vendor/bin/rector process src --level symfony40
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```
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Which is a shortcut for using complete path with `--config` option:
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```bash
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vendor/bin/rector process src --config vendor/rector/rector/src/config/level/symfony/symfony40.yml
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```
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You can also use your **own config file**:
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```bash
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vendor/bin/rector process src --config your-own-config.yml
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```
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2. Do you want to see the preview of changes first?
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Use the `--dry-run` option:
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```bash
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vendor/bin/rector process src --level symfony33 --dry-run
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```
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3. To process just specific subdirectories, you can use [fnmatch](http://php.net/manual/en/function.fnmatch.php) pattern with `*`:
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```bash
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vendor/bin/rector process "src/Symfony/Component/*/Tests" --level phpunit60 --dry-run
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```
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4. What levels are on the board?
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```bash
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vendor/bin/rector levels
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```
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### B. Custom Sets
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1. Create `rector.yml` with desired Rectors:
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```yml
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services:
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Rector\Nette\Rector\Application\InjectPropertyRector: ~
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```
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2. Try Rector on your `/src` directory:
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```bash
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vendor/bin/rector process src --dry-run
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```
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3. Apply the changes if you like them:
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```bash
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vendor/bin/rector process src
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```
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## How to Apply Coding Standards?
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Rector uses [EasyCodingStandard](https://github.com/Symplify/EasyCodingStandard) to improve the code style of changed files, like import namespaces, make 1 empty line between class elements etc.
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It's always better to use own project's prepared set, but if you don't have the option yet, just use `--with-style` option to handle these basic cases:
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```bash
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vendor/bin/rector process src --with-style
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```
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## More Detailed Documentation
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- [How Rector Works?](/docs/HowItWorks.md)
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- [How to Create Own Rector](/docs/HowToCreateOwnRector.md)
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- [Service Name to Type Provider](/docs/ServiceNameToTypeProvider.md)
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## How to Contribute
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Just follow 3 rules:
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- **1 feature per pull-request**
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- **New feature needs tests**
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- Tests, coding standards and PHPStan **checks must pass**:
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```bash
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composer complete-check
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```
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Don you need to fix coding standards? Run:
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```bash
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composer fix-cs
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```
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We would be happy to merge your feature then.
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