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--- @class (exact) blink.cmp.SnippetsConfig
--- @field preset 'default' | 'luasnip' | 'mini_snippets'
--- @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
--- @param handlers table<'default' | 'luasnip' | 'mini_snippets', fun(...): any>
local function by_preset(handlers)
return function(...)
local preset = require('blink.cmp.config').snippets.preset
return handlers[preset](...)
end
end
local validate = require('blink.cmp.config.utils').validate
local snippets = {
--- @type blink.cmp.SnippetsConfig
default = {
preset = 'default',
-- NOTE: we wrap `vim.snippet` calls to reduce startup by 1-2ms
expand = by_preset({
default = function(snippet) vim.snippet.expand(snippet) end,
luasnip = function(snippet) require('luasnip').lsp_expand(snippet) end,
mini_snippets = function(snippet)
if not _G.MiniSnippets then error('mini.snippets has not been setup') end
local insert = MiniSnippets.config.expand.insert or MiniSnippets.default_insert
insert(snippet)
end,
}),
active = by_preset({
default = function(filter) return vim.snippet.active(filter) end,
luasnip = function(filter)
if filter and filter.direction then return require('luasnip').jumpable(filter.direction) end
return require('luasnip').in_snippet()
end,
mini_snippets = function()
if not _G.MiniSnippets then error('mini.snippets has not been setup') end
return MiniSnippets.session.get(false) ~= nil
end,
}),
jump = by_preset({
default = function(direction) vim.snippet.jump(direction) end,
luasnip = function(direction) require('luasnip').jump(direction) end,
mini_snippets = function(direction)
if not _G.MiniSnippets then error('mini.snippets has not been setup') end
MiniSnippets.session.jump(direction == -1 and 'prev' or 'next')
end,
}),
},
}
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"',
},
expand = { config.expand, 'function' },
active = { config.active, 'function' },
jump = { config.jump, 'function' },
}, config)
end
return snippets
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