refactor: move handlers to its own file

lua/lazy/core/loader.lua

@@ -3,148 +3,30 @@ local Config = require("lazy.core.config")
 
 local M = {}
 
----@alias LoaderType "event"|"ft"|"module"|"keys"|"cmd"|"init"
----@type LoaderType[]
-M.types = {
-  "event",
-  "ft",
-  "module",
-  "keys",
-  "cmd",
-}
-
----@type table<LoaderType, table<string, string[]>>|{init: string[]}
-M.loaders = nil
 ---@type LazyPlugin[]
 M.loading = {}
 
-function M.get_loaders()
-  ---@type table<LoaderType, table<string, string[]>>|{init: string[]}
-  local loaders = { init = {} }
-  for _, lt in ipairs(M.types) do
-    loaders[lt] = {}
-  end
-  for _, plugin in pairs(Config.plugins) do
-    if plugin.init or (plugin.opt == false) then
-      table.insert(loaders.init, plugin.name)
-    end
-    for _, lt in ipairs(M.types) do
-      if plugin[lt] then
-        ---@diagnostic disable-next-line: no-unknown
-        for _, loader in ipairs(type(plugin[lt]) == "table" and plugin[lt] or { plugin[lt] }) do
-          loaders[lt][loader] = loaders[lt][loader] or {}
-          table.insert(loaders[lt][loader], plugin.name)
-        end
-      end
-    end
-  end
-  return loaders
-end
-
 function M.setup()
-  M.loaders = M.loaders or M.get_loaders()
-
-  local group = vim.api.nvim_create_augroup("lazy_loader", {
-    clear = true,
-  })
-
-  -- modules
-  table.insert(package.loaders, 2, M.module)
-
-  -- events
-  Util.track("loader_events")
-  for event, plugins in pairs(M.loaders.event) do
-    if event == "VimEnter" and vim.v.vim_did_enter == 1 then
-      M.load(plugins, { event = event })
-    else
-      local user_event = event:match("User (.*)")
-      vim.api.nvim_create_autocmd(user_event and "User" or event, {
-        once = true,
-        group = group,
-        pattern = user_event,
-        callback = function()
-          Util.track("event: " .. (user_event or event))
-          M.load(plugins, { event = event })
-          Util.track()
-        end,
-      })
-    end
-  end
-  Util.track()
-
-  -- filetypes
-  Util.track("loader_filetypes")
-  for ft, plugins in pairs(M.loaders.ft) do
-    vim.api.nvim_create_autocmd("FileType", {
-      once = true,
-      pattern = ft,
-      group = group,
-      callback = function()
-        Util.track("filetype: " .. ft)
-        M.load(plugins, { ft = ft })
-        Util.track()
-      end,
-    })
-  end
-  Util.track()
-
-  -- keys
-  Util.track("loader_keys")
-  for keys, plugins in pairs(M.loaders.keys or {}) do
-    vim.keymap.set("n", keys, function()
-      vim.keymap.del("n", keys)
-      Util.track("keys: " .. keys)
-      M.load(plugins, { keys = keys })
-      vim.api.nvim_input(keys)
-      Util.track()
-    end)
-  end
-  Util.track()
-
-  -- commands
-  Util.track("loader_commands")
-  for cmd, plugins in pairs(M.loaders.cmd or {}) do
-    local function _load(complete)
-      vim.api.nvim_del_user_command(cmd)
-      if complete then
-        Util.track("cmd-complete: " .. cmd)
-      else
-        Util.track("cmd: " .. cmd)
+  local Handler = require("lazy.core.handler")
+  for t, handler in pairs(Handler.handlers) do
+    Util.track(t)
+    ---@type LazyPlugin[]
+    local plugins = {}
+    for _, plugin in pairs(Config.plugins) do
+      if plugin[t] ~= nil then
+        table.insert(plugins, plugin)
       end
-      M.load(plugins, { cmd = cmd })
-      Util.track()
     end
-    vim.api.nvim_create_user_command(cmd, function(event)
-      _load()
-      vim.cmd(
-        ("%s %s%s%s %s"):format(
-          event.mods or "",
-          event.line1 == event.line2 and "" or event.line1 .. "," .. event.line2,
-          cmd,
-          event.bang and "!" or "",
-          event.args or ""
-        )
-      )
-    end, {
-      bang = true,
-      nargs = "*",
-      complete = function()
-        _load(true)
-        -- HACK: trick Neovim to show the newly loaded command completion
-        vim.api.nvim_input("<space><bs><tab>")
-      end,
-    })
+    if #plugins > 0 then
+      handler(plugins)
+    end
+    Util.track()
   end
-  Util.track()
 end
 
 function M.init_plugins()
   Util.track("plugin_init")
-  for _, name in ipairs(M.loaders.init) do
-    local plugin = Config.plugins[name]
-    if not plugin then
-      error(name)
-    end
+  for _, plugin in pairs(Config.plugins) do
     if plugin.init then
       Util.track(plugin.name)
       Util.try(plugin.init, "Failed to run `init` for **" .. plugin.name .. "**")
@@ -157,34 +39,7 @@ function M.init_plugins()
   Util.track()
 end
 
----@param modname string
-function M.module(modname)
-  local idx = modname:find(".", 1, true) or #modname + 1
-  while idx do
-    local name = modname:sub(1, idx - 1)
-    local plugins = M.loaders.module[name]
-    if plugins then
-      M.loaders.module[name] = nil
-      local reason = { require = modname }
-      if #M.loading == 0 then
-        local f = 3
-        while not reason.source do
-          local info = debug.getinfo(f, "S")
-          if not info then
-            break
-          end
-          if info.what ~= "C" then
-            reason.source = info.source:sub(2)
-          end
-          f = f + 1
-        end
-      end
-      M.load(plugins, reason)
-    end
-    idx = modname:find(".", idx + 1, true)
-  end
-end
-
+---@class Loader
 ---@param plugins string|LazyPlugin|string[]|LazyPlugin[]
 ---@param reason {[string]:string}
 ---@param opts? {load_start: boolean}