Add vsnip support for expanding (LSP) snippets

doc/blink-cmp.txt

@@ -922,7 +922,7 @@ For more common configurations, see the recipes <../recipes.md>.
       },
 
       -- Use a preset for snippets, check the snippets documentation for more information
-      snippets = { preset = 'default' | 'luasnip' | 'mini_snippets' },
+      snippets = { preset = 'default' | 'luasnip' | 'mini_snippets' | 'vsnip' },
 
       -- Experimental signature help support
       signature = { enabled = true }
@@ -1714,7 +1714,8 @@ snippets. The built-in `snippets` source will load friendly-snippets
 <https://github.com/rafamadriz/friendly-snippets>, if available, and load any
 snippets found at `~/.config/nvim/snippets/`. For use with Luasnip, see the
 |blink-cmp-luasnip-section|. For use with mini.snippets, see the
-|blink-cmp-mini.snippets-section|.
+|blink-cmp-mini.snippets-section|. For use with vim-vsnip, see the
+|blink-cmp-vim-vsnip-section|.
 
 
 FRIENDLY SNIPPETS ~
@@ -1831,6 +1832,23 @@ MINI.SNIPPETS ~
 <
 
 
+VIM-VSNIP ~
+
+>lua
+    {
+      'saghen/blink.cmp',
+      dependencies = 'echasnovski/mini.snippets',
+      opts = {
+        snippets = { preset = 'mini_snippets' },
+        -- ensure you have the `snippets` source (enabled by default)
+        sources = {
+          default = { 'lsp', 'path', 'snippets', 'buffer' },
+        },
+      }
+    }
+<
+
+
 DISABLE ALL SNIPPETS ~
 
 >lua

doc/configuration/general.md

@@ -63,7 +63,7 @@ For more common configurations, see the [recipes](../recipes.md).
   },
 
   -- Use a preset for snippets, check the snippets documentation for more information
-  snippets = { preset = 'default' | 'luasnip' | 'mini_snippets' },
+  snippets = { preset = 'default' | 'luasnip' | 'mini_snippets' | 'vsnip' },
 
   -- Experimental signature help support
   signature = { enabled = true }

doc/configuration/snippets.md

@@ -3,7 +3,7 @@ title: Snippets
 ---
 # Snippets<!-- panvimdoc-ignore-start --> <Badge type="info"><a href="./reference#snippets">Go to default configuration</a></Badge><!-- panvimdoc-ignore-end -->
 
-Blink uses the `vim.snippet` API by default for expanding and navigating snippets. The built-in `snippets` source will load [friendly-snippets](https://github.com/rafamadriz/friendly-snippets), if available, and load any snippets found at `~/.config/nvim/snippets/`. For use with Luasnip, see the [Luasnip section](#luasnip). For use with mini.snippets, see the [mini.snippets section](#mini-snippets).
+Blink uses the `vim.snippet` API by default for expanding and navigating snippets. The built-in `snippets` source will load [friendly-snippets](https://github.com/rafamadriz/friendly-snippets), if available, and load any snippets found at `~/.config/nvim/snippets/`. For use with Luasnip, see the [Luasnip section](#luasnip). For use with mini.snippets, see the [mini.snippets section](#mini-snippets). For use with vim-vsnip, see the [vim-vsnip section](#vim-vsnip).
 
 ## Friendly Snippets
 
@@ -98,6 +98,21 @@ There's a great introduction to writing custom snippets [in the nvim-scissors re
 }
 ```
 
+## `vim-vsnip`
+
+```lua
+{
+  'saghen/blink.cmp',
+  dependencies = {'hrsh7th/vim-vsnip', 'https://codeberg.org/FelipeLema/bink-cmp-vsnip.git'},
+  opts = {
+    snippets = { preset = 'vsnip' },
+    sources = {
+      default = { 'lsp', 'path', 'vsnip', 'buffer' },
+    },
+  }
+}
+```
+
 ## Disable all snippets
 
 ```lua

lua/blink/cmp/config/snippets.lua

@@ -1,11 +1,11 @@
 --- @class (exact) blink.cmp.SnippetsConfig
---- @field preset 'default' | 'luasnip' | 'mini_snippets'
+--- @field preset 'default' | 'luasnip' | 'mini_snippets' | 'vsnip'
 --- @field expand fun(snippet: string) Function to use when expanding LSP provided snippets
 --- @field active fun(filter?: { direction?: number }): boolean Function to use when checking if a snippet is active
 --- @field jump fun(direction: number) Function to use when jumping between tab stops in a snippet, where direction can be negative or positive
 --- @field score_offset number Offset to the score of all snippet items
 
---- @param handlers table<'default' | 'luasnip' | 'mini_snippets', fun(...): any>
+--- @param handlers table<'default' | 'luasnip' | 'mini_snippets' | 'vsnip', fun(...): any>
 local function by_preset(handlers)
   return function(...)
     local preset = require('blink.cmp.config').snippets.preset
@@ -37,6 +37,7 @@ local snippets = {
         -- we run after it completes it callback. We do this by resubscribing to TextChangedI
         require('blink.cmp').resubscribe()
       end,
+      vsnip = function(snippet) vim.fn['vsnip#anonymous'](snippet) end,
     }),
     active = by_preset({
       default = function(filter) return vim.snippet.active(filter) end,
@@ -50,6 +51,7 @@ local snippets = {
         if not _G.MiniSnippets then error('mini.snippets has not been setup') end
         return MiniSnippets.session.get(false) ~= nil
       end,
+      vsnip = function() return vim.fn.empty(vim.fn['vsnip#get_session']()) ~= 1 end,
     }),
     jump = by_preset({
       default = function(direction) vim.snippet.jump(direction) end,
@@ -62,6 +64,11 @@ local snippets = {
         if not _G.MiniSnippets then error('mini.snippets has not been setup') end
         MiniSnippets.session.jump(direction == -1 and 'prev' or 'next')
       end,
+      vsnip = function(direction)
+        local session = vim.fn['vsnip#get_session']()
+        if vim.fn.empty(session) == 1 then return false end
+        return session.jumpable(direction)
+      end,
     }),
     score_offset = -3,
   },
@@ -71,8 +78,8 @@ function snippets.validate(config)
   validate('snippets', {
     preset = {
       config.preset,
-      function(preset) return vim.tbl_contains({ 'default', 'luasnip', 'mini_snippets' }, preset) end,
-      'one of: "default", "luasnip", "mini_snippets"',
+      function(preset) return vim.tbl_contains({ 'default', 'luasnip', 'mini_snippets', 'vsnip' }, preset) end,
+      'one of: "default", "luasnip", "mini_snippets", "vsnip"',
     },
     expand = { config.expand, 'function' },
     active = { config.active, 'function' },