249 lines
7.7 KiB
Markdown
249 lines
7.7 KiB
Markdown
<div align="center">
|
|
<img src="https://user-images.githubusercontent.com/5306901/130352268-226f51a7-b203-4e74-aa71-2e53cb276ac0.png" width=250><br>
|
|
|
|
# Neogen - Your Annotation Toolkit
|
|
|
|
</div>
|
|
|
|
# Table Of Contents
|
|
|
|
* [Features](#features)
|
|
* [Requirements](#requirements)
|
|
* [Installation](#installation)
|
|
* [Usage](#usage)
|
|
* [Configuration](#configuration)
|
|
* [Supported Languages](#supported-languages)
|
|
* [GIFS](#gifs)
|
|
|
|
## Features
|
|
|
|
- Create annotations with one keybind
|
|
- Defaults for multiple languages and annotation conventions
|
|
- Extremely customizable and extensible
|
|
- Written in lua
|
|
|
|
## Requirements
|
|
|
|
- Install [nvim-treesitter](https://github.com/nvim-treesitter/nvim-treesitter)
|
|
|
|
## Installation
|
|
|
|
Use your favorite package manager to install Neogen, e.g:
|
|
|
|
```lua
|
|
use {
|
|
"danymat/neogen",
|
|
config = function()
|
|
require('neogen').setup {
|
|
enabled = true
|
|
}
|
|
end,
|
|
requires = "nvim-treesitter/nvim-treesitter"
|
|
}
|
|
```
|
|
|
|
## Usage
|
|
|
|
I exposed a command `:Neogen` to generate the annotations.
|
|
You can bind it to your keybind of choice, like so:
|
|
|
|
```lua
|
|
vim.api.nvim_set_keymap("n", "<Leader>ng", ":Neogen<CR>", {})
|
|
```
|
|
|
|
It'll generate the annotations provided by neogen.
|
|
|
|
## Configuration
|
|
|
|
```lua
|
|
require('neogen').setup {
|
|
enabled = true, -- required for Neogen to work
|
|
input_after_comment = true, -- (default: true) automatic jump (with insert mode) on inserted annotation
|
|
}
|
|
}
|
|
```
|
|
|
|
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
|
|
}
|
|
}
|
|
}
|
|
}
|
|
```
|
|
|
|
## Supported Languages
|
|
|
|
There is a list of supported languages and fields, with their annotation style
|
|
|
|
| Language | Annotation conventions | Supported fields |
|
|
|---|---|---|
|
|
| lua | Emmylua | `@param`, `@varargs`, `@return` |
|
|
|
|
## Adding Languages
|
|
|
|
|
|
|
|
### Configuration file
|
|
|
|
The configuration file for a language is in `lua/configurations/{lang}.lua`.
|
|
|
|
_Note: Be aware that Neogen uses Treesitter to operate. You can install [TSPlayground](https://github.com/nvim-treesitter/playground) to check the AST._
|
|
|
|
Below is a commented sample of the configuration file for `lua`.
|
|
|
|
```lua
|
|
-- Search for these nodes
|
|
parent = { "function", "local_function", "local_variable_declaration", "field", "variable_declaration" },
|
|
|
|
-- Traverse down these nodes and extract the information as necessary
|
|
data = {
|
|
-- If function or local_function is found as a parent
|
|
["function|local_function"] = {
|
|
-- Get second child from the parent node
|
|
["2"] = {
|
|
-- This second child has to be of type "parameters", otherwise does nothing
|
|
match = "parameters",
|
|
|
|
-- Extractor function that returns a set of TSname = values with values being of type string[]
|
|
extract = function(node)
|
|
local regular_params = neogen.utility:extract_children("identifier")(node)
|
|
local varargs = neogen.utility:extract_children("spread")(node)
|
|
|
|
return {
|
|
parameters = regular_params,
|
|
vararg = varargs,
|
|
}
|
|
end,
|
|
},
|
|
},
|
|
},
|
|
|
|
-- Custom lua locator that escapes from comments (More on locators below)
|
|
-- Passing nil will use the default locator
|
|
locator = require("neogen.locators.lua"),
|
|
|
|
-- Use default granulator and generator (More on them below)
|
|
granulator = nil,
|
|
generator = nil,
|
|
|
|
-- Template to use with the generator. (More on this below)
|
|
template = {
|
|
-- Which annotation convention to use
|
|
annotation_convention = "emmylua",
|
|
emmylua = {
|
|
{ nil, "- " },
|
|
{ "parameters", "- @param %s any" },
|
|
{ "vararg", "- @vararg any" },
|
|
{ "return_statement", "- @return any" }
|
|
}
|
|
},
|
|
```
|
|
|
|
The Neogen code is then divided in 3 major concepts:
|
|
|
|
### Locators
|
|
|
|
A locator tries to find (from the cursor node) one of the nodes from `parents` field specified in configuration.
|
|
|
|
This is the signature of the function:
|
|
|
|
```lua
|
|
function(node_info, nodes_to_match)
|
|
return node
|
|
end
|
|
```
|
|
|
|
- With `node_info` being a table with 2 fields:
|
|
|
|
```lua
|
|
{
|
|
root = root_node -- <TSnode>
|
|
current = current_node -- <TSnode>
|
|
}
|
|
```
|
|
|
|
- `nodes_to_match` is the field from `parents` in language configuration.
|
|
|
|
_Default: The default locator (in `lua/locators/default.lua`) just go back to the parent node of the current one and sees if it's one of the requested parents._
|
|
|
|
### Granulators
|
|
|
|
Now that a parent node is found (with locators) from the cursor location, it's time to use this node to find all requested fields.
|
|
|
|
The function signature is this:
|
|
|
|
```lua
|
|
function(parent_node, node_data)
|
|
return result
|
|
end
|
|
```
|
|
|
|
- `parent_node` being the node returned from the locator
|
|
- `result` is a table containing a set of `type = values` with values from type `string[]`, and type being a TS node name.
|
|
- `node_data` being the field `data` from configuration file. For example, if the `data` field is this one:
|
|
|
|
```lua
|
|
data = {
|
|
-- If function or local_function is found as a parent
|
|
["function|local_function"] = {
|
|
-- Get second child from the parent node
|
|
["2"] = {
|
|
-- This second child has to be of type "parameters", otherwise does nothing
|
|
match = "parameters",
|
|
|
|
-- Extractor function that returns a set of TSname = values with values being of type string[]
|
|
extract = function(node)
|
|
local regular_params = neogen.utility:extract_children("identifier")(node)
|
|
local varargs = neogen.utility:extract_children("spread")(node)
|
|
|
|
return {
|
|
parameters = regular_params,
|
|
vararg = varargs,
|
|
}
|
|
end,
|
|
},
|
|
},
|
|
},
|
|
```
|
|
|
|
Notes:
|
|
|
|
- If you create your own granulator, you can add any kind of parameters in the `data` field from configuration file as long as the function signature is the same provided.
|
|
- Utilities are provided in order to extract content from subnodes. You can check out their documentation in `lua/utility.lua`.
|
|
|
|
### Generators
|
|
|
|
A generator takes in the results from the granulator and tries to generate the template according to the language's configuration.
|
|
|
|
This is the function signature for a generator:
|
|
|
|
```lua
|
|
function(parent, data, template)
|
|
return start_row, start_col, generated_template
|
|
end
|
|
```
|
|
|
|
- `parent` is the parent node found with the locator
|
|
- `data` is the result from the granulator
|
|
- `template` being the `template` field from the language configuration file.
|
|
- `start_row` is the row in which we will append `generated_template`
|
|
- `start_col` is the col in which the `generated_template` will start
|
|
- `generated_template` is the output we will append on the specified locations.
|
|
|
|
## GIFS
|
|
|
|
|
|
|
|
## Credits
|
|
|
|
- Binx, for making that gorgeous logo for free!
|
|
- [Github](https://github.com/Binx-Codes/)
|
|
- [Reddit](https://www.reddit.com/u/binxatmachine)
|