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https://github.com/Badhi/nvim-treesitter-cpp-tools

C++ Helper Snippets Using Treesitter
https://github.com/Badhi/nvim-treesitter-cpp-tools

cpp lua neovim nvim nvim-treesitter treesitter

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C++ Helper Snippets Using Treesitter

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# nt-cpp-tools
![Unit Tests](https://github.com/badhi/nvim-treesitter-cpp-tools/actions/workflows/unit_tests.yml/badge.svg)

Experimental treesitter based neovim plugin to create intelligent implementations for C++

## Features

1. Out-of class member function implementation
2. Concrete class implement from Abstract class or Interface
3. Add missing functions to obey Rule of 3
4. Add missing functions to obey Rule of 5

## Install

Using [paq](https://github.com/savq/paq-nvim)

```lua
require "paq" {
"nvim-treesitter/nvim-treesitter",
"Badhi/nvim-treesitter-cpp-tools",
}
```

Using [packer.nvim](https://github.com/wbthomason/packer.nvim)

```lua
use {
requires = { "nvim-treesitter/nvim-treesitter" },
"Badhi/nvim-treesitter-cpp-tools",
}
```

Using [lazy.nvim](https://github.com/folke/lazy.nvim)
```lua
{
"Badhi/nvim-treesitter-cpp-tools",
dependencies = { "nvim-treesitter/nvim-treesitter" },
-- Optional: Configuration
opts = function()
local options = {
preview = {
quit = "q", -- optional keymapping for quit preview
accept = "", -- optional keymapping for accept preview
},
header_extension = "h", -- optional
source_extension = "cpp", -- optional
custom_define_class_function_commands = { -- optional
TSCppImplWrite = {
output_handle = require("nt-cpp-tools.output_handlers").get_add_to_cpp(),
},
--[[
= {
output_handle = function (str, context)
-- string contains the class implementation
-- do whatever you want to do with it
end
}
]]
},
}
return options
end,
-- End configuration
config = true,
}
```

## Setup

**For [lazy.nvim](https://github.com/folke/lazy.nvim), see [Install](#install)**

Add the following config to your init script

> **Note:** The config for this plugin, included in the `treesitter.config` is now moved to an independent config. Please make required changes

```lua
require 'nt-cpp-tools'.setup({
preview = {
quit = 'q', -- optional keymapping for quit preview
accept = '' -- optional keymapping for accept preview
},
header_extension = 'h', -- optional
source_extension = 'cxx', -- optional
custom_define_class_function_commands = { -- optional
TSCppImplWrite = {
output_handle = require'nt-cpp-tools.output_handlers'.get_add_to_cpp()
}
--[[
= {
output_handle = function (str, context)
-- string contains the class implementation
-- do whatever you want to do with it
end
}
]]
}
})
```

## Usage

* Select the range of the class using visual mode
* Use below commands

| Command | Feature |
| ----------- | ----------- |
| `TSCppDefineClassFunc` | Implement out of class member functions

*subset of functions can be implemented by selecting required function declarations using visual mode or simply keeping the cursor on the function declaration before calling the command*

Supported special features
1. Templates (with default args)
2. Function arguments with default values
3. Nested classes
(check [test_cases](https://github.com/Badhi/nvim-treesitter-cpp-tools/blob/master/test/implement_functions.txt) for tested examples)|
| `TSCppMakeConcreteClass` | Create a concrete class implementing all the pure virtual functions |
| `TSCppRuleOf3` | Adds the missing function declarations to the class to obey the Rule of 3 (if eligible) |
| `TSCppRuleOf5` | Adds the missing function declarations to the class to obey the Rule of 5 (if eligible) |

## Example

1. `TSCppDefineClassFunc`

![TSImplementFunc](https://user-images.githubusercontent.com/10277051/152277748-d7c0204a-b54e-4ae1-90ac-b1e4cbd51ba5.gif)

2. `TSCppMakeConcreteClass`

![TSConcreteClass](https://user-images.githubusercontent.com/10277051/152278222-d20e34f0-542d-451e-ae16-646f68e9f72f.gif)

3. `TSCppRuleOf3`

![TSRuleOf3](https://user-images.githubusercontent.com/10277051/152277800-a2573916-5e8a-4f3a-804f-88f6f6994281.gif)