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-- Add additional capabilities supported by nvim-cmp
local capabilities = require('cmp_nvim_lsp').default_capabilities()
local lspconfig = require('lspconfig')
-- Enable some language servers with the additional completion capabilities offered by nvim-cmp
local servers = { 'clangd', 'rust_analyzer', 'pyright', 'tsserver' }
for _, lsp in ipairs(servers) do
lspconfig[lsp].setup {
-- on_attach = my_custom_on_attach,
capabilities = capabilities,
}
end
-- luasnip setup
local luasnip = require 'luasnip'
-- nvim-cmp setup
local cmp = require 'cmp'
cmp.setup {
snippet = {
expand = function(args)
luasnip.lsp_expand(args.body)
end,
},
mapping = cmp.mapping.preset.insert({
['<C-d>'] = cmp.mapping.scroll_docs(-4),
['<C-f>'] = cmp.mapping.scroll_docs(4),
['<C-Space>'] = cmp.mapping.complete(),
['<CR>'] = cmp.mapping.confirm {
behavior = cmp.ConfirmBehavior.Replace,
select = true,
},
['<Tab>'] = cmp.mapping(function(fallback)
if cmp.visible() then
cmp.select_next_item()
elseif luasnip.expand_or_jumpable() then
luasnip.expand_or_jump()
else
fallback()
end
end, { 'i', 's' }),
['<S-Tab>'] = cmp.mapping(function(fallback)
if cmp.visible() then
cmp.select_prev_item()
elseif luasnip.jumpable(-1) then
luasnip.jump(-1)
else
fallback()
end
end, { 'i', 's' }),
}),
sources = cmp.config.sources({
{ name = 'nvim_lsp' },
{ name = 'luasnip' },
}),
window = {
completion = cmp.config.window.bordered(),
documentation = cmp.config.window.bordered()
},
formatting = {
fields = { "abbr", "menu", "kind" },
format = function(entry, item)
-- Define menu shorthand for different completion sources.
local menu_icon = {
nvim_lsp = "LSP",
nvim_lua = "LUA",
luasnip = "SNP",
buffer = "BUFF",
path = "PATH",
}
-- Set the menu "icon" to the shorthand for each completion source.
item.menu = menu_icon[entry.source.name]
-- Set the fixed width of the completion menu to 60 characters.
-- fixed_width = 20
-- Set 'fixed_width' to false if not provided.
fixed_width = fixed_width or false
-- Get the completion entry text shown in the completion window.
local content = item.abbr
-- Set the fixed completion window width.
if fixed_width then
vim.o.pumwidth = fixed_width
end
-- Get the width of the current window.
local win_width = vim.api.nvim_win_get_width(0)
-- Set the max content width based on either: 'fixed_width'
-- or a percentage of the window width, in this case 20%.
-- We subtract 10 from 'fixed_width' to leave room for 'kind' fields.
local max_content_width = fixed_width and fixed_width - 10 or math.floor(win_width * 0.2)
-- Truncate the completion entry text if it's longer than the
-- max content width. We subtract 3 from the max content width
-- to account for the "..." that will be appended to it.
if #content > max_content_width then
item.abbr = vim.fn.strcharpart(content, 0, max_content_width - 3) .. "..."
else
item.abbr = content .. (" "):rep(max_content_width - #content)
end
return item
end,
},
}
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