feat: Rearranges nvim configuration

nvim/m-housh/lua/plugins/cmp.lua

@@ -0,0 +1,91 @@
+return {
+	"hrsh7th/nvim-cmp",
+	enabled = true,
+	event = "VeryLazy",
+	dependencies = {
+		"hrsh7th/cmp-nvim-lsp",
+		"hrsh7th/cmp-buffer", -- source for text in buffer
+		"hrsh7th/cmp-path", -- source for file system paths
+		"L3MON4D3/LuaSnip", -- snippet engine
+		"saadparwaiz1/cmp_luasnip", -- for autocompletion
+		"rafamadriz/friendly-snippets", -- useful snippets
+		"onsails/lspkind.nvim", -- vs-code like pictograms
+	},
+	config = function()
+		local cmp = require("cmp")
+		local luasnip = require("luasnip")
+		local lspkind = require("lspkind")
+
+		-- TODO: This is implemented in LuaSnip config, does it need to be here?
+
+		-- loads vscode style snippets from installed plugins (e.g. friendly-snippets)
+		require("luasnip.loaders.from_vscode").lazy_load()
+
+		cmp.setup({
+			completion = {
+				completeopt = "menu,menuone,preview",
+			},
+			snippet = { -- configure how nvim-cmp interacts with snippet engine
+				expand = function(args)
+					luasnip.lsp_expand(args.body)
+				end,
+			},
+			mapping = cmp.mapping.preset.insert({
+				["<C-k>"] = cmp.mapping.select_prev_item(), -- previous suggestion
+				["<C-j>"] = cmp.mapping.select_next_item(), -- next suggestion
+				["<C-Space>"] = cmp.mapping.confirm({
+					behavior = cmp.ConfirmBehavior.Insert,
+					select = true,
+				}), -- select completion, this makes it so it doesn't auto complete when suggesting.
+				["<C-e>"] = cmp.mapping.abort(), -- close completion window
+				["<CR>"] = cmp.mapping({
+					i = function(fallback)
+						if cmp.visible() then
+							if luasnip.expandable() then
+								luasnip.expand()
+							else
+								cmp.mapping.confirm({ select = false })
+								fallback()
+							end
+						else
+							fallback()
+						end
+					end,
+					s = cmp.mapping.confirm({ select = true }),
+					c = cmp.mapping.confirm({ behavior = cmp.ConfirmBehavior.Replace, select = true }),
+				}),
+				-- TODO:
+				-- The next two mappings are also implemented in the LuaSnip configuration,
+				-- as <C-j> and <C-k> do they actually need to be here??
+				["<C-b>"] = cmp.mapping(function(fallback)
+					if luasnip.jumpable(-1) then
+						luasnip.jump(-1)
+					else
+						fallback()
+					end
+				end, { "i", "s" }),
+				["<C-f>"] = cmp.mapping(function(fallback)
+					if luasnip.jumpable(1) then
+						luasnip.jump(1)
+					else
+						fallback()
+					end
+				end, { "i", "s" }),
+			}),
+			-- sources for autocompletion
+			sources = cmp.config.sources({
+				{ name = "nvim_lsp" },
+				{ name = "luasnip" }, -- snippets
+				{ name = "buffer" }, -- text within current buffer
+				{ name = "path" }, -- file system paths
+			}),
+			-- configure lspkind for vs-code like pictograms in completion menu
+			formatting = {
+				format = lspkind.cmp_format({
+					maxwidth = 50,
+					ellipsis_char = "...",
+				}),
+			},
+		})
+	end,
+}