mirror of
https://gitea.invidious.io/iv-org/shard-ameba.git
synced 2024-08-15 00:53:29 +00:00
254 lines
7.6 KiB
Markdown
254 lines
7.6 KiB
Markdown
[](https://github.com/vshymanskyy/StandWithUkraine/blob/main/docs/README.md)
|
|
|
|
<p align="center">
|
|
<img src="https://raw.githubusercontent.com/veelenga/bin/master/ameba/logo.png" width="800">
|
|
<h3 align="center">Ameba</h3>
|
|
<p align="center">Code style linter for Crystal<p>
|
|
<p align="center">
|
|
<sup>
|
|
<i>(a single-celled animal that catches food and moves about by extending fingerlike projections of protoplasm)</i>
|
|
</sup>
|
|
</p>
|
|
<p align="center">
|
|
<a href="https://github.com/crystal-ameba/ameba/actions?query=workflow%3ACI"><img src="https://github.com/crystal-ameba/ameba/workflows/CI/badge.svg"></a>
|
|
<a href="https://github.com/crystal-ameba/ameba/releases"><img src="https://img.shields.io/github/release/crystal-ameba/ameba.svg?maxAge=360"></a>
|
|
<a href="https://github.com/crystal-ameba/ameba/blob/master/LICENSE"><img src="https://img.shields.io/github/license/crystal-ameba/ameba.svg"></a>
|
|
</p>
|
|
</p>
|
|
|
|
- [About](#about)
|
|
- [Usage](#usage)
|
|
- [Watch a tutorial](#watch-a-tutorial)
|
|
- [Autocorrection](#autocorrection)
|
|
- [Explain issues](#explain-issues)
|
|
- [Run in parallel](#run-in-parallel)
|
|
- [Installation](#installation)
|
|
- [As a project dependency:](#as-a-project-dependency)
|
|
- [OS X](#os-x)
|
|
- [Docker](#docker)
|
|
- [From sources](#from-sources)
|
|
- [Configuration](#configuration)
|
|
- [Sources](#sources)
|
|
- [Rules](#rules)
|
|
- [Inline disabling](#inline-disabling)
|
|
- [Editors \& integrations](#editors--integrations)
|
|
- [Credits \& inspirations](#credits--inspirations)
|
|
- [Contributors](#contributors)
|
|
|
|
## About
|
|
|
|
Ameba is a static code analysis tool for the Crystal language.
|
|
It enforces a consistent [Crystal code style](https://crystal-lang.org/reference/conventions/coding_style.html),
|
|
also catches code smells and wrong code constructions.
|
|
|
|
See also [Roadmap](https://github.com/crystal-ameba/ameba/wiki).
|
|
|
|
## Usage
|
|
|
|
Run `ameba` binary within your project directory to catch code issues:
|
|
|
|
```sh
|
|
$ ameba
|
|
Inspecting 107 files
|
|
|
|
...............F.....................FF....................................................................
|
|
|
|
src/ameba/formatter/flycheck_formatter.cr:6:37
|
|
[W] Lint/UnusedArgument: Unused argument `location`. If it's necessary, use `_` as an argument name to indicate that it won't be used.
|
|
> source.issues.each do |issue, location|
|
|
^
|
|
|
|
src/ameba/formatter/base_formatter.cr:16:14
|
|
[W] Lint/UselessAssign: Useless assignment to variable `s`
|
|
> return s += issues.size
|
|
^
|
|
|
|
src/ameba/formatter/base_formatter.cr:16:7 [Correctable]
|
|
[C] Style/RedundantReturn: Redundant `return` detected
|
|
> return s += issues.size
|
|
^---------------------^
|
|
|
|
Finished in 389.45 milliseconds
|
|
107 inspected, 3 failures
|
|
```
|
|
|
|
### Watch a tutorial
|
|
|
|
<a href="https://luckycasts.com/videos/ameba"><img src="https://i.imgur.com/uOETQlM.png" title="Write Better Crystal Code with the Ameba Shard" width="500" /></a>
|
|
|
|
[🎬 Watch the LuckyCast showing how to use Ameba](https://luckycasts.com/videos/ameba)
|
|
|
|
### Autocorrection
|
|
|
|
Rules that are marked as `[Correctable]` in the output can be automatically corrected using `--fix` flag:
|
|
|
|
```sh
|
|
$ ameba --fix
|
|
```
|
|
|
|
### Explain issues
|
|
|
|
Ameba allows you to dig deeper into an issue, by showing you details about the issue
|
|
and the reasoning by it being reported.
|
|
|
|
To be convenient, you can just copy-paste the `PATH:line:column` string from the
|
|
report and paste behind the `ameba` command to check it out.
|
|
|
|
```sh
|
|
$ ameba crystal/command/format.cr:26:83 # show explanation for the issue
|
|
$ ameba --explain crystal/command/format.cr:26:83 # same thing
|
|
```
|
|
|
|
### Run in parallel
|
|
|
|
Starting from 0.31.0 Crystal [supports parallelism](https://crystal-lang.org/2019/09/06/parallelism-in-crystal.html).
|
|
It allows to run linting in parallel too.
|
|
In order to take advantage of this feature you need to build ameba with preview_mt support:
|
|
|
|
```sh
|
|
$ crystal build src/cli.cr -Dpreview_mt -o bin/ameba
|
|
$ make install
|
|
```
|
|
|
|
Some quick benchmark results measured while running Ameba on Crystal repo:
|
|
|
|
```sh
|
|
$ CRYSTAL_WORKERS=1 ameba #=> 29.11 seconds
|
|
$ CRYSTAL_WORKERS=2 ameba #=> 19.49 seconds
|
|
$ CRYSTAL_WORKERS=4 ameba #=> 13.48 seconds
|
|
$ CRYSTAL_WORKERS=8 ameba #=> 10.14 seconds
|
|
```
|
|
|
|
## Installation
|
|
|
|
### As a project dependency:
|
|
|
|
Add this to your application's `shard.yml`:
|
|
|
|
```yaml
|
|
development_dependencies:
|
|
ameba:
|
|
github: crystal-ameba/ameba
|
|
version: ~> 1.4.0
|
|
```
|
|
|
|
Build `bin/ameba` binary within your project directory while running `shards install`.
|
|
|
|
### OS X
|
|
|
|
```sh
|
|
$ brew tap veelenga/tap
|
|
$ brew install ameba
|
|
```
|
|
|
|
### Docker
|
|
|
|
Build the image:
|
|
|
|
```sh
|
|
$ docker build -t ghcr.io/crystal-ameba/ameba .
|
|
```
|
|
|
|
To use the resulting image on a local source folder, mount the current (or target) directory into `/src`:
|
|
|
|
```sh
|
|
$ docker run -v $(pwd):/src ghcr.io/crystal-ameba/ameba
|
|
```
|
|
|
|
Also available on GitHub: https://github.com/crystal-ameba/ameba/pkgs/container/ameba
|
|
|
|
### From sources
|
|
|
|
```sh
|
|
$ git clone https://github.com/crystal-ameba/ameba && cd ameba
|
|
$ make install
|
|
```
|
|
|
|
## Configuration
|
|
|
|
Default configuration file is `.ameba.yml`.
|
|
It allows to configure rule properties, disable specific rules and exclude sources from the rules.
|
|
|
|
Generate new file by running `ameba --gen-config`.
|
|
|
|
### Sources
|
|
|
|
**List of sources to run Ameba on can be configured globally via:**
|
|
|
|
- `Globs` section - an array of wildcards (or paths) to include to the
|
|
inspection. Defaults to `%w(**/*.cr !lib)`, meaning it includes all project
|
|
files with `*.cr` extension except those which exist in `lib` folder.
|
|
- `Excluded` section - an array of wildcards (or paths) to exclude from the
|
|
source list defined by `Globs`. Defaults to an empty array.
|
|
|
|
In this example we define default globs and exclude `src/compiler` folder:
|
|
|
|
``` yaml
|
|
Globs:
|
|
- "**/*.cr"
|
|
- "!lib"
|
|
|
|
Excluded:
|
|
- src/compiler
|
|
```
|
|
|
|
**Specific sources can be excluded at rule level**:
|
|
|
|
``` yaml
|
|
Style/RedundantBegin:
|
|
Excluded:
|
|
- src/server/processor.cr
|
|
- src/server/api.cr
|
|
```
|
|
|
|
### Rules
|
|
|
|
One or more rules, or a one or more group of rules can be included or excluded
|
|
via command line arguments:
|
|
|
|
```sh
|
|
$ ameba --only Lint/Syntax # runs only Lint/Syntax rule
|
|
$ ameba --only Style,Lint # runs only rules from Style and Lint groups
|
|
$ ameba --except Lint/Syntax # runs all rules except Lint/Syntax
|
|
$ ameba --except Style,Lint # runs all rules except rules in Style and Lint groups
|
|
```
|
|
|
|
Or through the configuration file:
|
|
|
|
``` yaml
|
|
Style/RedundantBegin:
|
|
Enabled: false
|
|
```
|
|
|
|
### Inline disabling
|
|
|
|
One or more rules or one or more group of rules can be disabled using inline directives:
|
|
|
|
```crystal
|
|
# ameba:disable Style/LargeNumbers
|
|
time = Time.epoch(1483859302)
|
|
|
|
time = Time.epoch(1483859302) # ameba:disable Style/LargeNumbers, Lint/UselessAssign
|
|
time = Time.epoch(1483859302) # ameba:disable Style, Lint
|
|
```
|
|
|
|
## Editors & integrations
|
|
|
|
- Vim: [vim-crystal](https://github.com/rhysd/vim-crystal), [Ale](https://github.com/w0rp/ale)
|
|
- Emacs: [ameba.el](https://github.com/crystal-ameba/ameba.el)
|
|
- Sublime Text: [Sublime Linter Ameba](https://github.com/epergo/SublimeLinter-contrib-ameba)
|
|
- VSCode: [vscode-crystal-ameba](https://github.com/crystal-ameba/vscode-crystal-ameba)
|
|
- Codacy: [codacy-ameba](https://github.com/codacy/codacy-ameba)
|
|
- GitHub Actions: [github-action](https://github.com/crystal-ameba/github-action)
|
|
|
|
## Credits & inspirations
|
|
|
|
- [Crystal Language](https://crystal-lang.org)
|
|
- [Rubocop](https://rubocop.readthedocs.io/en/latest/)
|
|
- [Credo](http://credo-ci.org/)
|
|
- [Dogma](https://github.com/lpil/dogma)
|
|
|
|
## Contributors
|
|
|
|
- [veelenga](https://github.com/veelenga) Vitalii Elenhaupt - creator, maintainer
|
|
- [Sija](https://github.com/Sija) Sijawusz Pur Rahnama - maintainer
|