dotfiles/symlinks/config/nvim/lua/lsp/completion.lua

-------------------------------------------------------------------------------
--    - LSP completion config -
-------------------------------------------------------------------------------
-- Set completeopt to have a better completion experience
vim.o.completeopt = "menu,menuone,noselect"

local cmp = require "cmp"
local luasnip = require("luasnip")

cmp.setup {
    snippet = {
        expand = function(args) require'luasnip'.lsp_expand(args.body) end
    },
    mapping = {
        ["<C-d>"] = cmp.mapping.scroll_docs(-4),
        ["<C-f>"] = cmp.mapping.scroll_docs(4),
        ["<C-Space>"] = cmp.mapping.complete(),
        ["<C-e>"] = cmp.mapping.close(),
        ["<C-y>"] = cmp.mapping.confirm({select = true}),
        ["<C-n>"] = function(fallback)
            if cmp.visible() then
                cmp.select_next_item()
            else
                fallback()
            end
        end,
        ["<C-p>"] = function(fallback)
            if cmp.visible() then
                cmp.select_prev_item()
            else
                fallback()
            end
        end,
        ["<C-j>"] = cmp.mapping(function(fallback)
            if luasnip.jumpable(1) then
                luasnip.jump(1)
            else
                fallback()
            end
        end, {"i", "s"}),
        ["<C-k>"] = cmp.mapping(function(fallback)
            if luasnip.jumpable(-1) then
                luasnip.jump(-1)
            else
                fallback()
            end
        end, {"i", "s"})
    },
    sources = {
        {name = "nvim_lsp"}, {name = "nvim_lua"}, {name = "path"},
        {name = "luasnip"}, {name = "buffer"}
    }
}