feat nvim: 建立lspconfig整體架構

已參考mason, lspconfig, cmp官方範例，並反覆問GPT並手動對照後，已手動融合設定

dot_config/nvim/exact_lua/lsp/exact_config/cmp.lua

@@ -0,0 +1,84 @@
+-- Set up nvim-cmp.
+local cmp = require'cmp'
+
+cmp.setup({
+  snippet = {
+    -- REQUIRED - you must specify a snippet engine
+    expand = function(args)
+      vim.fn["vsnip#anonymous"](args.body) -- For `vsnip` users.
+      require('luasnip').lsp_expand(args.body) -- For `luasnip` users.
+      -- require('snippy').expand_snippet(args.body) -- For `snippy` users.
+      -- vim.fn["UltiSnips#Anon"](args.body) -- For `ultisnips` users.
+      -- vim.snippet.expand(args.body) -- For native neovim snippets (Neovim v0.10+)
+
+      -- For `mini.snippets` users:
+      -- local insert = MiniSnippets.config.expand.insert or MiniSnippets.default_insert
+      -- insert({ body = args.body }) -- Insert at cursor
+      -- cmp.resubscribe({ "TextChangedI", "TextChangedP" })
+      -- require("cmp.config").set_onetime({ sources = {} })
+    end,
+  },
+  window = {
+    -- completion = cmp.config.window.bordered(),
+    -- documentation = cmp.config.window.bordered(),
+  },
+  mapping = cmp.mapping.preset.insert({
+    ['<C-b>'] = cmp.mapping.scroll_docs(-4),
+    ['<C-f>'] = cmp.mapping.scroll_docs(4),
+    ['<C-Space>'] = cmp.mapping.complete(),
+    ['<C-e>'] = cmp.mapping.abort(),
+    ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+
+    -- AI範例:
+    -- ["<Tab>"] = cmp.mapping.select_next_item(),
+    -- ["<S-Tab>"] = cmp.mapping.select_prev_item(),
+    -- ["<CR>"] = cmp.mapping.confirm({ select = true }),
+  }),
+  sources = cmp.config.sources({
+    { name = 'nvim_lsp' },
+    -- { name = 'vsnip' }, -- For vsnip users.
+    { name = 'luasnip' }, -- For luasnip users.
+    -- { name = 'ultisnips' }, -- For ultisnips users.
+    -- { name = 'snippy' }, -- For snippy users.
+  }, {
+    { name = 'buffer' },
+  })
+})
+
+-- To use git you need to install the plugin petertriho/cmp-git and uncomment lines below
+-- Set configuration for specific filetype.
+--[[ cmp.setup.filetype('gitcommit', {
+  sources = cmp.config.sources({
+    { name = 'git' },
+  }, {
+    { name = 'buffer' },
+  })
+})
+require("cmp_git").setup() ]]--
+
+-- Use buffer source for `/` and `?` (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline({ '/', '?' }, {
+  mapping = cmp.mapping.preset.cmdline(),
+  sources = {
+    { name = 'buffer' }
+  }
+})
+
+-- Use cmdline & path source for ':' (if you enabled `native_menu`, this won't work anymore).
+cmp.setup.cmdline(':', {
+  mapping = cmp.mapping.preset.cmdline(),
+  sources = cmp.config.sources({
+    { name = 'path' }
+  }, {
+    { name = 'cmdline' }
+  }),
+  matching = { disallow_symbol_nonprefix_matching = false }
+})
+
+-- 已經由lspconfig.lua來處理，故註解掉
+-- -- Set up lspconfig.
+-- local capabilities = require('cmp_nvim_lsp').default_capabilities()
+-- -- Replace <YOUR_LSP_SERVER> with each lsp server you've enabled.
+-- require('lspconfig')['<YOUR_LSP_SERVER>'].setup {
+--   capabilities = capabilities
+-- }

dot_config/nvim/exact_lua/lsp/exact_config/lspconfig.lua

@@ -0,0 +1,31 @@
+local lspconfig = require("lspconfig")
+local capabilities = require("cmp_nvim_lsp").default_capabilities()
+
+local on_attach = function(_, bufnr)
+  local map = function(mode, lhs, rhs)
+    vim.keymap.set(mode, lhs, rhs, { buffer = bufnr })
+  end
+  map("n", "gd", vim.lsp.buf.definition)
+  map("n", "K", vim.lsp.buf.hover)
+end
+
+local servers = {
+  "phpactor",
+  "pyright",
+  "gopls",
+  "html",
+  "cssls",
+  -- "tsserver", -- TODO: tsserver is deprecated, use ts_ls instead.
+}
+
+-- 載入所有的對應的 LSP server 設定
+--
+-- 相關設定請看
+-- <https://github.com/neovim/nvim-lspconfig/blob/master/doc/configs.md>
+for _, name in ipairs(servers) do
+  local ok, config = pcall(require, "lsp.servers." .. name)
+  if not ok then config = {} end
+  config.capabilities = capabilities
+  config.on_attach = on_attach
+  lspconfig[name].setup(config)
+end

dot_config/nvim/exact_lua/lsp/exact_config/mason.lua

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+require("mason").setup()
+require("mason-lspconfig").setup {
+  -- A list of servers to automatically install if they're not already installed. Example: { "rust_analyzer@nightly", "lua_ls" }
+  -- This setting has no relation with the `automatic_installation` setting.
+  ---@type string[]
+  ensure_installed = {
+    -- "lua_ls", "rust_analyzer" -- 官方範例
+    "phpactor",
+    "pyright",
+    "gopls",
+    "html",
+    "cssls",
+    "tsserver",
+   },
+
+  -- Whether servers that are set up (via lspconfig) should be automatically installed if they're not already installed.
+  -- This setting has no relation with the `ensure_installed` setting.
+  -- Can either be:
+  --   - false: Servers are not automatically installed.
+  --   - true: All servers set up via lspconfig are automatically installed.
+  --   - { exclude: string[] }: All servers set up via lspconfig, except the ones provided in the list, are automatically installed.
+  --       Example: automatic_installation = { exclude = { "rust_analyzer", "solargraph" } }
+  ---@type boolean
+  automatic_installation = false,
+
+  -- See `:h mason-lspconfig.setup_handlers()`
+  ---@type table<string, fun(server_name: string)>?
+  handlers = nil,
+}
+
+-- 下面這段先註解掉，由lspconfig.lua來處理
+-- -- After setting up mason-lspconfig you may set up servers via lspconfig
+-- require("lspconfig").lua_ls.setup {}
+-- require("lspconfig").rust_analyzer.setup {}
+-- -- ...