shiftwinting/youtube-treesitter

Tree Sitter

Table of content

• What is Tree Sitter
• A bit more about Tree Sitter
• Nvim Tree Sitter
  • Features of Nvim Tree Sitter
• Requirements
• Installing
• Configuration
• Tree Sitter Supported Colorscheme

What is Tree Sitter

Tree-sitter is a parser generator tool and an incremental parsing library. It can build a concrete syntax tree for a source file and efficiently update the syntax tree as the source file is edited

• General enough to parse any programming language
• Fast enough to parse on every keystroke in a text editor
• Robust enough to provide useful results even in the presence of syntax errors
• Dependency-free so that the runtime library (which is written in pure C) can be embedded in any application

A bit more about Tree Sitter

You can play with tree sitter https://tree-sitter.github.io/tree-sitter/playground

• Syntax tree
• Back tracking (branches)
• Incremental parsing
• Error recovery

Nvim Tree Sitter

Simple and easy way to use the interface for tree-sitter in Neovim and to provide some basic functionality such as,

Features of Nvim Tree Sitter

• Shipped with parsers with for popular programming languages
• Provides commands to manage tree sitter parsers (install/update/remove/enable/disable etc..)
• Syntax highlighting
• Incremental selection
• Indentation
• Folding

Requirements

• Neovim 0.5 or higher

Installing

• Install nvim-treesitter

" vim-plug
Plug 'nvim-treesitter/nvim-treesitter', {'do': ':TSUpdate'}

• Install Language parser

:TSInstall {language}
" :TSInstall java
" :TSInstall python

Configuration

By default, all the modules in nvim-treesitter is disabled. User needs to enable modules explicitly.

Note: Available capture groups and highlight group identifiers will be found in highlight.lua file in the source code.

require('nvim-treesitter.configs').setup({
    ensure_installed = "all",

    highlight = {
        enable = true,
        custom_captures = {
            -- ["<capture group>"] = "<highlight group>",
            -- ["keyword"] = "TSString",
        },
    },

    incremental_selection = {
        enable = true,
        keymaps = {
            init_selection = "gnn",
            node_incremental = "grn",
            scope_incremental = "grc",
            node_decremental = "grm",
        },
    },

    indent = {
        enable = true
    },
})

vim.api.nvim_exec([[
    set foldmethod=expr
    set foldexpr=nvim_treesitter#foldexpr()
]], true)

Tree Sitter Supported Colorscheme

You might need nvim-treesitter supported colorscheme. List of colorscheme available below.

• https://github.com/rockerBOO/awesome-neovim#treesitter-support
• https://github.com/nvim-treesitter/nvim-treesitter/wiki/Colorschemes