Treehopper 🐇

Syntax trees + hop = Treehopper

A Plugin that provides region selection using hints on the abstract syntax tree of a document.

Requirements

• Neovim 0.7.2+

Treehopper operates on syntax trees. It uses tree-sitter to retrieve the tree if a parser is available, otherwise it tries to use the built-in LSP client in Neovim (using the selectionRange functionality).

You can install tree-sitter parsers either via:

• nvim-treesitter TSInstall
• Manually: You need to download and compile the language specific parsers using gcc and place the object files into ~/.config/nvim/parser. See http://tree-sitter.github.io/tree-sitter/

Installation

• Install it like any other neovim plugin:
  • If using vim-plug: Plug mfussenegger/nvim-treehopper
  • If using packer.nvim: use mfussenegger/nvim-treehopper

Usage

Selecting a region

Define two mappings:

omap     <silent> m :<C-U>lua require('tsht').nodes()<CR>
xnoremap <silent> m :lua require('tsht').nodes()<CR>

You can configure which keys are used for hint labels, the first N characters will be taken from the hint_keys and then after that it will restart from a-zA-Z

require("tsht").config.hint_keys = { "h", "j", "f", "d", "n", "v", "s", "l", "a" }

Moving

Moving depends on hop.nvim

If you want to move to the start or end of a syntax node you can use require('tsht').move({ side = "start" }).

The parameter is optional and defaults to start. Use side = "end" if you want to move to the end of a node.

Credits

• hop.nvim