vim-vsnip

VSCode(LSP)'s snippet feature in vim.

DEMO

Concept

• Standard features written in Pure Vim script.
• Implement LSP snippet format
• Support LSP-client and completion-engine by vim-vsnip-integ
  • LSP-client
    • vim-lsp
    • vim-lsc
    • LanguageClient-neovim
    • neovim built-in lsp
    • vim-lamp
  • completion-engine
    • deoplete.nvim
    • asyncomplete.vim
    • vim-mucomplete
    • completion-nvim

Features

• Nested placeholders
  • You can define snippet like console.log($1${2:, $1})$0
• Nested snippet expansion
  • You can expand snippet even if you already activated other snippet (it will be merged as one snippet)
• Load snippet from VSCode extension
  • If you install VSCode extension via Plug 'microsoft/vscode-python', vsnip will load those snippets.
• Support many LSP-client & completion-engine
  • You can get how to integrate those plugins in here.

Usage

1. Install

You can use your favorite plugin managers to install this plugin.

Plug 'hrsh7th/vim-vsnip'
Plug 'hrsh7th/vim-vsnip-integ'

call dein#add('hrsh7th/vim-vsnip')
call dein#add('hrsh7th/vim-vsnip-integ')

NeoBundle 'hrsh7th/vim-vsnip'
NeoBundle 'hrsh7th/vim-vsnip-integ'

2. Setting

" NOTE: You can use other key to expand snippet.

" Expand
imap <expr> <C-j>   vsnip#expandable()  ? '<Plug>(vsnip-expand)'         : '<C-j>'
smap <expr> <C-j>   vsnip#expandable()  ? '<Plug>(vsnip-expand)'         : '<C-j>'

" Expand or jump
imap <expr> <C-l>   vsnip#available(1)  ? '<Plug>(vsnip-expand-or-jump)' : '<C-l>'
smap <expr> <C-l>   vsnip#available(1)  ? '<Plug>(vsnip-expand-or-jump)' : '<C-l>'

" Jump forward or backward
imap <expr> <Tab>   vsnip#jumpable(1)   ? '<Plug>(vsnip-jump-next)'      : '<Tab>'
smap <expr> <Tab>   vsnip#jumpable(1)   ? '<Plug>(vsnip-jump-next)'      : '<Tab>'
imap <expr> <S-Tab> vsnip#jumpable(-1)  ? '<Plug>(vsnip-jump-prev)'      : '<S-Tab>'
smap <expr> <S-Tab> vsnip#jumpable(-1)  ? '<Plug>(vsnip-jump-prev)'      : '<S-Tab>'

" Select or cut text to use as $TM_SELECTED_TEXT in the next snippet.
" See https://github.com/hrsh7th/vim-vsnip/pull/50
nmap        <C-l>   <Plug>(vsnip-select-text)
xmap        <C-l>   <Plug>(vsnip-select-text)
smap        <C-l>   <Plug>(vsnip-select-text)
nmap        <C-j>   <Plug>(vsnip-cut-text)
xmap        <C-j>   <Plug>(vsnip-cut-text)
smap        <C-j>   <Plug>(vsnip-cut-text)

3. Create your own snippet

Snippet file will store to g:vsnip_snippet_dir per filetype.

1. Open some file (example: Sample.js)
2. Invoke :VsnipOpen command.
3. Edit snippet.

{
  "Class": {
    "prefix": ["class"],
    "body": [
      "class $1 ${2:extends ${3:Parent} }{",
      "\tconstructor() {",
      "\t\t$0",
      "\t}",
      "}"
    ],
    "description": "Class definition template."
  }
}

The snippet format was described in here or here.

Development

How to run test it?

You can run npm run test after install vim-themis.

How sync same tabstop placeholders?

1. compute the user-diff ... s:Session.flush_changes
2. reflect the user-diff to snippet ast ... s:Snippet.follow
3. reflect the sync-diff to buffer content ... s:Snippet.sync & s:Session.flush_changes