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124 lines
3.4 KiB
Markdown
124 lines
3.4 KiB
Markdown
<p align="center">
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<img src="https://gitcdn.link/repo/veelenga/bin/master/ameba/logo.png" width="200">
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<h3 align="center">Ameba</h3>
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<p align="center">Code style linter for Crystal<p>
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<p align="center">
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<sup>
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<i> (a single-celled animal that catches food and moves about by extending fingerlike projections of protoplasm) </i>
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</sup>
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</p>
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<p align="center">
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<a href="https://travis-ci.org/veelenga/ameba"><img src="https://travis-ci.org/veelenga/ameba.svg?branch=master"></a>
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<a href="https://github.com/veelenga/ameba/releases"><img src="https://img.shields.io/github/release/veelenga/ameba.svg?maxAge=360"></a>
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<a href="https://shards.rocks/badge/github/veelenga/ameba"><img src="https://shards.rocks/badge/github/veelenga/ameba/status.svg"></a>
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<a href="https://github.com/veelenga/ameba/blob/master/LICENSE"><img src="https://img.shields.io/github/license/veelenga/ameba.svg"></a>
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<a href="https://gitter.im/veelenga/ameba?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge"><img src="https://badges.gitter.im/veelenga/ameba.svg"></a>
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</p>
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</p>
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## About
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Ameba is a static code analysis tool for the Crystal language.
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It enforces a consistent [Crystal code style](https://crystal-lang.org/docs/conventions/coding_style.html),
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also catches code smells and wrong code constructions.
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## Usage
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Run `ameba` binary within your project directory to catch code issues:
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```sh
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$ ameba
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Inspecting 107 files.
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...............F.....................F...............................................
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.....................
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src/ameba/rule/unneeded_disable_directive.cr:29:7
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UselessAssign: Useless assignment to variable `s`
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src/ameba/formatter/flycheck_formatter.cr:5:21
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UnusedArgument: Unused argument `location`
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Finished in 248.9 milliseconds
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107 inspected, 2 failures.
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```
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## Installation
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### As a project dependency:
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Add this to your application's `shard.yml`:
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```yaml
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development_dependencies:
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ameba:
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github: veelenga/ameba
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```
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Build `bin/ameba` binary within your project directory while running `shards install`.
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You may also want to use it on [Travis](travis-ci.org):
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```yaml
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# .travis.yml
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language: crystal
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install:
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- shards install
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script:
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- crystal spec
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- bin/ameba
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```
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Using this config Ameba will inspect files just after the specs run. Travis will also fail
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the build if some problems detected.
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### OS X
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```sh
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$ brew tap veelenga/tap
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$ brew install ameba
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```
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### From sources
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```sh
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$ git clone https://github.com/veelenga/ameba && cd ameba
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$ make install
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```
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## Configuration
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Default configuration file is `.ameba.yml`.
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It allows to configure rule properties, disable specific rules and exclude sources from the rules.
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Generate new file by running `ameba --gen-config`.
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### Inline disabling
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One or more rules can be disabled using inline directives:
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```crystal
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# ameba:disable LargeNumbers
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time = Time.epoch(1483859302)
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time = Time.epoch(1483859302) # ameba:disable LargeNumbers
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```
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## Editor integration
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* Vim: [vim-crystal](https://github.com/rhysd/vim-crystal) (via [Syntastic](https://github.com/vim-syntastic/syntastic))
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* Emacs: [ameba.el](https://github.com/veelenga/ameba.el)
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## Credits & inspirations
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- [Crystal Language](crystal-lang.org)
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- [Rubocop](http://rubocop.readthedocs.io/en/latest/)
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- [Credo](http://credo-ci.org/)
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- [Dogma](https://github.com/lpil/dogma)
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## Contributors
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- [veelenga](https://github.com/veelenga) Vitalii Elenhaupt - creator, maintainer
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