1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
# RuboCop AST
[](https://badge.fury.io/rb/rubocop-ast)
[](https://github.com/rubocop/rubocop-ast/actions/workflows/rubocop.yml)
Contains the classes needed by [RuboCop](https://github.com/rubocop/rubocop) to deal with Ruby's AST, in particular:
* `RuboCop::AST::Node` ([doc](docs/modules/ROOT/pages/node_types.adoc))
* `RuboCop::AST::NodePattern` ([doc](docs/modules/ROOT/pages/node_pattern.adoc))
This gem may be used independently from the main RuboCop gem. It was extracted from RuboCop in version 0.84 and its only
dependency is the [parser](https://github.com/whitequark/parser) gem, which `rubocop-ast` extends.
## Installation
Just install the `rubocop-ast` gem
```sh
gem install rubocop-ast
```
or if you use bundler put this in your `Gemfile`
```ruby
gem 'rubocop-ast'
```
## Usage
Refer to the documentation of [`RuboCop::AST::Node`](docs/modules/ROOT/pages/node_types.adoc) and [`RuboCop::AST::NodePattern`](docs/modules/ROOT/pages/node_pattern.adoc)
See the [docs site](https://docs.rubocop.org/rubocop-ast) for more details.
### Parser compatibility switches
This gem, by default, uses most [legacy AST output from parser](https://github.com/whitequark/parser/#usage), except for the following which are set to `true`:
* `emit_forward_arg`
* `emit_match_pattern`
The main `RuboCop` gem uses these defaults (and is currently only compatible with these), but this gem can be used separately from `RuboCop` and is meant to be compatible with all settings. For example, to have `-> { ... }` emitted
as `LambdaNode` instead of `SendNode`:
```ruby
RuboCop::AST::Builder.emit_lambda = true
```
## Contributing
Checkout the [contribution guidelines](CONTRIBUTING.md).
## License
`rubocop-ast` is MIT licensed. [See the accompanying file](LICENSE.txt) for
the full text.
|
