neovim-flake/modules/completion/nvim-cmp/config.nix

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{
lib,
config,
...
}:
with lib;
with builtins; let
cfg = config.vim.autocomplete;
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lspkindEnabled = config.vim.lsp.enable && config.vim.lsp.lspkind.enable;
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self = import ./nvim-cmp.nix {inherit lib;};
mappingDefinitions = self.options.vim.autocomplete.mappings;
mappings = addDescriptionsToMappings cfg.mappings mappingDefinitions;
builtSources =
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concatMapStringsSep
"\n"
(n: "{ name = '${n}'},")
(attrNames cfg.sources);
builtMaps =
concatStringsSep
"\n"
(mapAttrsToList
(n: v:
if v == null
then ""
else "${n} = '${v}',")
cfg.sources);
dagPlacement =
if lspkindEnabled
then nvim.dag.entryAfter ["lspkind"]
else nvim.dag.entryAnywhere;
in {
config = mkIf cfg.enable {
vim.startPlugins = [
"nvim-cmp"
"cmp-buffer"
"cmp-vsnip"
"cmp-path"
"vim-vsnip"
];
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vim.autocomplete.sources = {
"nvim-cmp" = null;
"vsnip" = "[VSnip]";
"buffer" = "[Buffer]";
"crates" = "[Crates]";
"path" = "[Path]";
};
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vim.maps.insert = mkMerge [
(mkSetLuaBinding mappings.complete ''
require('cmp').complete
'')
(mkSetLuaBinding mappings.confirm ''
function()
if not require('cmp').confirm({ select = true }) then
local termcode = vim.api.nvim_replace_termcodes(${builtins.toJSON mappings.confirm.value}, true, false, true)
vim.fn.feedkeys(termcode, 'n')
end
end
'')
(mkSetLuaBinding mappings.next ''
function()
local has_words_before = function()
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 cmp = require('cmp')
local feedkey = function(key, mode)
vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
end
if cmp.visible() then
cmp.select_next_item()
elseif vim.fn['vsnip#available'](1) == 1 then
feedkey("<Plug>(vsnip-expand-or-jump)", "")
elseif has_words_before() then
cmp.complete()
else
local termcode = vim.api.nvim_replace_termcodes(${builtins.toJSON mappings.next.value}, true, false, true)
vim.fn.feedkeys(termcode, 'n')
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end
end
'')
(mkSetLuaBinding mappings.previous ''
function()
local cmp = require('cmp')
local feedkey = function(key, mode)
vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
end
if cmp.visible() then
cmp.select_prev_item()
elseif vim.fn['vsnip#available'](-1) == 1 then
feedkeys("<Plug>(vsnip-jump-prev)", "")
end
end
'')
(mkSetLuaBinding mappings.close ''
require('cmp').mapping.abort
'')
(mkSetLuaBinding mappings.scrollDocsUp ''
function()
require('cmp').mapping.scroll_docs(-4)
end
'')
(mkSetLuaBinding mappings.scrollDocsDown ''
function()
require('cmp').mapping.scroll_docs(4)
end
'')
];
vim.maps.command = mkMerge [
(mkSetLuaBinding mappings.complete ''
require('cmp').complete
'')
(mkSetLuaBinding mappings.close ''
require('cmp').mapping.close
'')
(mkSetLuaBinding mappings.scrollDocsUp ''
function()
require('cmp').mapping.scroll_docs(-4)
end
'')
(mkSetLuaBinding mappings.scrollDocsDown ''
function()
require('cmp').mapping.scroll_docs(4)
end
'')
];
vim.maps.select = mkMerge [
(mkSetLuaBinding mappings.next ''
function()
local cmp = require('cmp')
local has_words_before = function()
local line, col = unpack(vim.api.nvim_win_get_cursor(0))
return col ~= 0 and vim.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match("%s") == nil
end
local feedkey = function(key, mode)
vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
end
if cmp.visible() then
cmp.select_next_item()
elseif vim.fn['vsnip#available'](1) == 1 then
feedkey("<Plug>(vsnip-expand-or-jump)", "")
elseif has_words_before() then
cmp.complete()
else
local termcode = vim.api.nvim_replace_termcodes(${builtins.toJSON mappings.next.value}, true, false, true)
vim.fn.feedkeys(termcode, 'n')
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end
end
'')
(mkSetLuaBinding mappings.previous ''
function()
local cmp = require('cmp')
local feedkey = function(key, mode)
vim.api.nvim_feedkeys(vim.api.nvim_replace_termcodes(key, true, true, true), mode, true)
end
if cmp.visible() then
cmp.select_prev_item()
elseif vim.fn['vsnip#available'](-1) == 1 then
feedkeys("<Plug>(vsnip-jump-prev)", "")
end
end
'')
];
# TODO: alternative snippet engines to vsnip
# https://github.com/hrsh7th/nvim-cmp/blob/main/doc/cmp.txt#L82
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vim.luaConfigRC.completion = mkIf (cfg.type == "nvim-cmp") (dagPlacement ''
local nvim_cmp_menu_map = function(entry, vim_item)
-- name for each source
vim_item.menu = ({
${builtMaps}
})[entry.source.name]
print(vim_item.menu)
return vim_item
end
${optionalString lspkindEnabled ''
lspkind_opts.before = ${cfg.formatting.format}
''}
local cmp = require'cmp'
cmp.setup({
window = {
-- TODO: at some point, those need to be optional
-- but first nvim cmp module needs to be detached from "cfg.autocomplete"
completion = cmp.config.window.bordered(),
documentation = cmp.config.window.bordered(),
},
snippet = {
expand = function(args)
vim.fn["vsnip#anonymous"](args.body)
end,
},
sources = {
${builtSources}
},
completion = {
completeopt = 'menu,menuone,noinsert',
},
formatting = {
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format =
${
if lspkindEnabled
then "lspkind.cmp_format(lspkind_opts)"
else cfg.formatting.format
},
}
})
${optionalString (config.vim.autopairs.enable && config.vim.autopairs.type == "nvim-autopairs") ''
local cmp_autopairs = require('nvim-autopairs.completion.cmp')
cmp.event:on('confirm_done', cmp_autopairs.on_confirm_done({ map_char = { text = ""} }))
''}
'');
vim.snippets.vsnip.enable =
if (cfg.type == "nvim-cmp")
then true
else config.vim.snippets.vsnip.enable;
};
}