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https://github.com/danymat/neogen
A better annotation generator. Supports multiple languages and annotation conventions.
https://github.com/danymat/neogen
annotation comment lua neovim neovim-annotation neovim-documentation neovim-lua neovim-plugin nvim
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A better annotation generator. Supports multiple languages and annotation conventions.
- Host: GitHub
- URL: https://github.com/danymat/neogen
- Owner: danymat
- License: gpl-3.0
- Created: 2021-08-15T20:03:20.000Z (over 3 years ago)
- Default Branch: main
- Last Pushed: 2024-08-22T08:41:06.000Z (4 months ago)
- Last Synced: 2024-09-29T06:04:41.667Z (3 months ago)
- Topics: annotation, comment, lua, neovim, neovim-annotation, neovim-documentation, neovim-lua, neovim-plugin, nvim
- Language: Lua
- Homepage:
- Size: 5.23 MB
- Stars: 1,319
- Watchers: 9
- Forks: 56
- Open Issues: 31
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE
Awesome Lists containing this project
- awesome-neovim - danymat/neogen - A better annotation generator. Supports multiple languages and annotation conventions. (Editing Support / Comment)
README
# Neogen - Your Annotation Toolkit
[](https://neovim.io)
[](http://www.lua.org)
# Table Of Contents
- [Features](#features)
- [Requirements](#requirements)
- [Installation](#installation)
- [Usage](#usage)
- [Configuration](#configuration)
- [Supported Languages](#supported-languages)
- [Adding Languages](#adding-languages)
- [GIFS](#gifs)
- [Credits](#credits)
- [Support](#support)
## Features
- Create annotations with one keybind, and jump your cursor in the inserted annotation
- Defaults for multiple languages and annotation conventions
- Extremely customizable and extensible
- Written in lua (and uses Tree-sitter)
## Requirements
Have Tree-sitter parsers installed on your system. For more information, check out the [:treesitter-parsers](https://neovim.io/doc/user/treesitter.html#treesitter-parsers) neovim help page.
## Installation
Use your favorite package manager to install Neogen, e.g:
### Lazy
```lua
{
"danymat/neogen",
config = true,
-- Uncomment next line if you want to follow only stable versions
-- version = "*"
}
```
### Packer
```lua
use {
"danymat/neogen",
config = function()
require('neogen').setup {}
end,
-- Uncomment next line if you want to follow only stable versions
-- tag = "*"
}
```
## Usage
- If you want to keep it simple, you can use the `:Neogen` command:
```vim
" will generate annotation for the function, class or other relevant type you're currently in
:Neogen
" or you can force a certain type of annotation with `:Neogen `
" It'll find the next upper node that matches the type `TYPE`
" E.g if you're on a method of a class and do `:Neogen class`, it'll find the class declaration and generate the annotation.
:Neogen func|class|type|...
```
- If you like to use the lua API, I exposed a function to generate the annotations.
```lua
require('neogen').generate()
```
You can bind it to your keybind of choice, like so:
```lua
local opts = { noremap = true, silent = true }
vim.api.nvim_set_keymap("n", "nf", ":lua require('neogen').generate()", opts)
```
Calling the `generate` function without any parameters will try to generate annotations for the current function.
You can provide some options for the generate, like so:
```lua
require('neogen').generate({
type = "func" -- the annotation type to generate. Currently supported: func, class, type, file
})
```
For example, I can add an other keybind to generate class annotations:
```lua
local opts = { noremap = true, silent = true }
vim.api.nvim_set_keymap("n", "nc", ":lua require('neogen').generate({ type = 'class' })", opts)
```
### Snippet support
We added snippet support, and we provide defaults for some snippet engines.
And this is done via the `snippet_engine` option in neogen's setup:
- `snippet_engine` option will use provided engine to place the annotations:
Currently supported: `luasnip`, `snippy`, `vsnip`, `nvim`.
```lua
require('neogen').setup({ snippet_engine = "luasnip" })
```
That's all ! You can now use your favorite snippet engine to control the annotation, like jumping between placeholders.
Or, if you want to return the snippet as a string (to integrate with other snippet engines, for example),
you can do it by using the `return_snippet` option in the `generate` function:
- `return_snippet` option will return the annotations as lsp snippets.
```lua
local snippet, row, col = require('neogen').generate({ snippet_engine = "luasnip" })
```
And then pass the snippet to the plugin's snippet expansion function.
### Default cycling support
_Note that this part is only useful if you don't use the snippets integration._
If you don't want to use a snippet engine with Neogen, you can leverage Neogen's native jumps between placeholders.
To map some keys to the cycling feature, you can do like so:
```lua
local opts = { noremap = true, silent = true }
vim.api.nvim_set_keymap("i", "", ":lua require('neogen').jump_next", opts)
vim.api.nvim_set_keymap("i", "", ":lua require('neogen').jump_prev", opts)
```
Or, if you want to use a key that's already used for completion purposes, take a look at the code snippet here:
nvim-cmp
```lua
local cmp = require('cmp')
local neogen = require('neogen')
cmp.setup {
...
-- You must set mapping if you want.
mapping = {
[""] = cmp.mapping(function(fallback)
if neogen.jumpable() then
neogen.jump_next()
else
fallback()
end
end, {
"i",
"s",
}),
[""] = cmp.mapping(function(fallback)
if neogen.jumpable(true) then
neogen.jump_prev()
else
fallback()
end
end, {
"i",
"s",
}),
},
...
}
```
## Configuration
```lua
require('neogen').setup {
enabled = true, --if you want to disable Neogen
input_after_comment = true, -- (default: true) automatic jump (with insert mode) on inserted annotation
-- jump_map = "" -- (DROPPED SUPPORT, see [here](#cycle-between-annotations) !) The keymap in order to jump in the annotation fields (in insert mode)
}
```
If you're not satisfied with the default configuration for a language, you can change the defaults like this:
```lua
require('neogen').setup {
enabled = true,
languages = {
lua = {
template = {
annotation_convention = "emmylua" -- for a full list of annotation_conventions, see supported-languages below,
... -- for more template configurations, see the language's configuration file in configurations/{lang}.lua
}
},
...
}
}
```
For example, if you want to quickly add support for new filetypes based around existing ones, you can do like this:
```lua
require('neogen').setup({
languages = {
['cpp.doxygen'] = require('neogen.configurations.cpp')
}
})
```
## Supported Languages
There is a list of supported languages and fields, with their annotation style
| Languages | Annotation Conventions | Supported annotation types |
| --------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------- |
| sh | [Google Style Guide](https://google.github.io/styleguide/shellguide.html) (`"google_bash"`) | `func`, `file` |
| c | [Doxygen](https://www.doxygen.nl/manual/commands.html) (`"doxygen"`) | `func`, `file`, `type` |
| cs | [Xmldoc](https://docs.microsoft.com/fr-fr/dotnet/csharp/language-reference/xmldoc/) (`"xmldoc"`)
[Doxygen](https://www.doxygen.nl/manual/commands.html) (`"doxygen"`) | `func`, `file`, `class` |
| cpp | [Doxygen](https://www.doxygen.nl/manual/commands.html) (`"doxygen"`) | `func`, `file`, `class` |
| go | [GoDoc](https://go.dev/blog/godoc) (`"godoc"`) | `func`, `type` |
| java | [Javadoc](https://docs.oracle.com/javase/1.5.0/docs/tooldocs/windows/javadoc.html#documentationcomments) (`"javadoc`) | `func`, `class`, `type` |
| javascript | [JSDoc](https://jsdoc.app) (`"jsdoc"`) | `func`, `class`, `type`, `file` |
| javascriptreact | [JSDoc](https://jsdoc.app) (`"jsdoc"`) | `func`, `class`, `type`, `file` |
| julia | [Julia](https://docs.julialang.org/en/v1/manual/documentation/#Writing-Documentation) (`"julia"`) | `func`, `class` |
| kotlin | [KDoc](https://kotlinlang.org/docs/kotlin-doc.html) (`"kdoc"`) | `func`, `class` |
| lua | [Emmylua](https://emmylua.github.io/) (`"emmylua"`)
[Ldoc](https://stevedonovan.github.io/ldoc/manual/doc.md.html) (`"ldoc"`) | `func`, `class`, `type`, `file` |
| php | [Php-doc](https://docs.phpdoc.org/3.0/guide/references/phpdoc/index.html) (`"phpdoc"`) | `func`, `type`, `class` |
| python | [Google docstrings](https://google.github.io/styleguide/pyguide.html) (`"google_docstrings"`)
[Numpydoc](https://numpydoc.readthedocs.io/en/latest/format.html) (`"numpydoc"`)
[reST](https://sphinx-rtd-tutorial.readthedocs.io/en/latest/docstrings.html) (`"reST"`) | `func`, `class`, `type`, `file` |
| ruby | [YARD](https://yardoc.org/index.html) (`"yard"`)
[Rdoc](https://github.com/ruby/rdoc) (`"rdoc"`)
[Tomdoc](http://tomdoc.org) (`"tomdoc"`) | `func`, `type`, `class` |
| rust | [RustDoc](https://doc.rust-lang.org/rustdoc/what-is-rustdoc.html) (`"rustdoc"`)
[Alternative](https://stackoverflow.com/questions/30009650/how-do-you-document-function-arguments) (`"rust_alternative"`) | `func`, `file`, `class` |
| typescript | [JSDoc](https://jsdoc.app) (`"jsdoc"`)
[TSDoc](https://tsdoc.org) (`"tsdoc"`) | `func`, `class`, `type`, `file` |
| typescriptreact | [JSDoc](https://jsdoc.app) (`"jsdoc"`)
[TSDoc](https://tsdoc.org) (`"tsdoc"`) | `func`, `class`, `type`, `file` |
| vue | [JSDoc](https://jsdoc.app) (`"jsdoc"`) | `func`, `class`, `type`, `file` |
## Adding Languages
1. Using the defaults to generate a new language support: [Adding Languages](./docs/adding-languages.md)
2. (advanced) Only if the defaults aren't enough, please see here: [Advanced Integration](./docs/advanced-integration.md)
Tip: Take a look at this beatiful diagram, showing a representation of the codebase. You can then take a first understanding of what is under the hood. For more details, you can see `:h neogen-develop`.
## Tests
Run tests using this command
```sh
make test
```
## GIFS
## Credits
- Binx, for making that gorgeous logo for free!
- [Github](https://github.com/Binx-Codes/)
- [Reddit](https://www.reddit.com/u/binxatmachine)
## Support
You like my plugin and want to express your gratitude 👼 ? You can suppport me by donating the equivalent of my morning coffee (no minimum required). I would really appreciate your support as it can motivate me to continue this journey 💝
- [Donate here](https://github.com/sponsors/danymat)