vim/dot-config/nvim/lua/dot_vim/completion.lua

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local cmp = require "cmp"
local luasnip = require "luasnip"
local has_words_before = function()
unpack = unpack or table.unpack
local line, col = unpack(vim.api.nvim_win_get_cursor(0))
return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
end
local mapping = cmp.mapping.preset.insert{
['<Tab>'] = cmp.mapping(function(fallback)
if cmp.visible() then
cmp.select_next_item()
elseif luasnip.expand_or_locally_jumpable() then
luasnip.expand_or_jump()
elseif has_words_before() then
cmp.complete()
else
fallback()
end
end, {"i", "s"}),
['<S-Tab>'] = cmp.mapping(function(fallback)
if cmp.visible() then
cmp.select_prev_item()
elseif luasnip.locally_jumpable(-1) then
luasnip.jump(-1)
else
fallback()
end
end, {"i", "s"}),
['<CR>'] = cmp.mapping.confirm {
behavior = cmp.ConfirmBehavior.Replace,
select = true,
},
}
local config = {
snippet = {
expand = function(args)
luasnip.lsp_expand(args.body)
end,
},
sources = cmp.config.sources{
{name = "nvim_lsp"},
{name = "luasnip"},
},
mapping = mapping,
}
return {
setup = function()
require('luasnip.loaders.from_vscode').lazy_load()
luasnip.config.setup {}
cmp.setup(config)
end,
}