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local config = function()
if vim.g.snippets ~= "luasnip" then
return
end
local ls = require "luasnip"
local types = require "luasnip.util.types"
ls.config.set_config {
-- This tells LuaSnip to remember to keep around the last snippet.
-- You can jump back into even if you move outside of the selection
history = true,
-- This one is cool cause if you have dynamic snippets, it updatesas you type!
updateevents = "TextChanged,TextChangedI",
-- Autosnippets:
enable_autosnippets = true,
ext_opts = {
[types.choiceNode] = {
active = {
virt_text = { { "<- Choice", "Error" } },
},
},
},
}
-- create snippet
-- s(context, nodes, condition, ...)
local snippet = ls.s
-- TODO: Write about this.
-- Useful for dynamic nodes and choice nodes
-- local snippet_from_nodes = ls.sn
-- This is the simplest node.
-- Creates a new text node. Places cursor after node by default.
-- t { "this will be inserted" }
--
-- Multiple lines are by passing a table of strings.
-- t { "line 1", "line 2" }
local t = ls.text_node
-- Insert Node
-- Creates a location for the cursor to jump to.
-- Possible options to jump to are 1 - N
-- If you use 0, that's the final place to jump to.
--
-- To create placeholder text, pass it as the second argument
-- i(2, "this is placeholder text")
local i = ls.insert_node
-- Function Node
-- Takes a function that returns text
-- local f = ls.function_node
-- This a choice snippet. You can move through with <c-l> (in my config)
-- c(1, { t {"hello"}, t {"world"}, }),
--
-- The first argument is the jump position
-- The second argument is a table of possible nodes.
-- Note, one thing that's nice is you don't have to include
-- the jump position for nodes that normally require one (can be nil)
-- local c = ls.choice_node
-- local d = ls.dynamic_node
-- TODO: Document what I've learned about lambda
-- local l = require("luasnip.extras").lambda
-- local events = require("luasnip.util.events")
local shortcut = function(val)
if type(val) == "string" then
return { t { val }, i(0) }
end
if type(val) == "table" then
for k, v in ipairs(val) do
if type(v) == "string" then
val[k] = t { v }
end
end
end
return val
end
local make = function(tbl)
local result = {}
for k, v in pairs(tbl) do
table.insert(result, (snippet({ trig = k, desc = v.desc }, shortcut(v))))
end
return result
end
ls.cleanup()
for _, ft_path in ipairs(vim.api.nvim_get_runtime_file("lua/alpha/snips/ft/*.lua", true)) do
local ft = vim.fn.fnamemodify(ft_path, ":t:r")
ls.add_snippets(ft, make(loadfile(ft_path)()))
end
-- <c-k> is my expansion key
-- this will expand the current item or jump to the next item within the snippet.
vim.keymap.set({ "i", "s" }, "<c-k>", function()
if ls.expand_or_jumpable() then
ls.expand_or_jump()
end
end, { silent = true })
-- <c-j> is my jump backwards key.
-- this always moves to the previous item within the snippet
vim.keymap.set({ "i", "s" }, "<c-j>", function()
if ls.jumpable(-1) then
ls.jump(-1)
end
end, { silent = true })
-- <c-l> is selecting within a list of options.
-- This is useful for choice nodes (introduced in the forthcoming episode 2)
vim.keymap.set("i", "<c-l>", function()
if ls.choice_active() then
ls.change_choice(1)
end
end)
end
return {
"L3MON4D3/LuaSnip",
version = "v1.*",
event = "VeryLazy",
config = function()
config()
vim.keymap.set("n", "<leader><leader>s", config)
end,
}
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