dyninput.nvim

Fucking Shift!! Dynamisc change the input according the context need neovim 0.10+

input \ it give me ||{} and cursor between |. shift? you don't need then.

Install

must neovim 0.10+(head) version

• Lazy.nvim

require('lazy').setup({
    'nvimdev/dyninput.nvim',
    config = function()
        require('dyninput').setup(conf)
    end,
    dependencies = {'nvim-treesitter/nvim-treesitter'}
})

SetUp

rule in setup config table. example config

local rs = require('dyninput.lang.rust')
local ms = require('dyninput.lang.misc')
require('dyninput').setup({
  c = {
    ['-'] = {
      { '->', ms.c_struct_pointer },
      { '_', ms.snake_case },
    },
  },
  rust = {
    [';'] = {
      { '::', rs.double_colon },
      { ': ', rs.single_colon },
    },
    ['='] = { ' => ', rs.fat_arrow },
    ['-'] = {
      { ' -> ', rs.thin_arrow },
      { '_', ms.snake_case },
    },
    ['\\'] = { '|!| {}', rs.closure_fn },
  },
})

in setup param table key is filetype and value is table with key and rules.

ft = {
    [rule key] = rule -- table | List-like table
}

specail of ! thise mean cursor in there

Custom

rule is a table first element must be new character(s) which will insert to buffer. secound element is a filter function that receive a param opt a table type param opt has {buf,lnum,col} field. when filter function return true mean this rule need take effect.

there has some default context filter of language dyninput.misc and dyninput.rust

• List of some languages implment in default.

local ms = require('dyninput.lang.misc')
ms.c_struct_pointer  -- match struct pointer variable usually use for arrow symbol `&strcut->field`
ms.generic_in_cpp    -- match before word of cursor is template
ms.snake_case        -- match snake_case
ms.semicolon_in_lua  -- match before word is self or is a variable
ms.go_variable_define-- match the situation of variable define like `g :=` `g,x :=`
ms.go_struct_field   -- match word in struct `struct { name:--here }`

• For Rust

local rs = require('dyninput.lang.rust')
rs.double_colon      -- match double colon
rs.single_colon      -- match single colon
rs.fat_arrow         -- match in `match` expression
rs.thin_arrow        -- match is function return
rs.closure_fn        -- match closure

Write Own Context filter

you can according naming conventions, (AST)tresitter node type or lsp symbols or highlights or other the way that can detect which is the new characters need input. in dyninput.util there has some useful functions wrap can used. more detail can look at util module.

---opt table
---lnum is 1 indexed when you use some apis of neovim which need row (0 indexed) you need lnum -1
function my_own(opt)
    print(opt.lnum, opt.col, opt.buf)
    return ture
end

then use your own context filter

require('dyninput').setup({
    your_language = {
        ['character'] = { 'new characters', my_own }
    }
})

More usage you can reference my config

Contribute

Thanks for contribute this plugin. most case need write a test for your patch. How to run test in local. vusted command is required, vusted test under dyninput.nvim dir

luarocks --lua-version=5.1 install vusted

For some dependcies like treesitter. you can use DYNTEST env variable to define a path in your local like DYNTEST=/path/to/nvim-treesitter vusted test.

License MIT