mirror of
https://github.com/folke/lazy.nvim.git
synced 2025-04-04 06:57:34 +00:00
363 lines
8.8 KiB
Lua
363 lines
8.8 KiB
Lua
local M = {}
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---@class CacheOptions
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M.options = {
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module = "config.plugins",
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cache = vim.fn.stdpath("state") .. "/lazy/plugins.state",
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trim = false,
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}
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M.dirty = false
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M.cache_hash = ""
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---@alias ModEntry {file: string, hash?:string, chunk?: string|fun(), used?: boolean}
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---@type table<string,ModEntry>
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M.modules = {}
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---@type LazyState?
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M.state = nil
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---@alias DirEntry {name: string, type: "file"|"directory"|"link"}
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function M.walk(dir, modname, fn)
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local d = vim.loop.fs_opendir(dir, nil, 100)
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if d then
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---@type DirEntry[]
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local entries = vim.loop.fs_readdir(d)
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while entries do
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for _, entry in ipairs(entries) do
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local path = dir .. "/" .. entry.name
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if entry.type == "directory" then
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M.walk(path, modname .. "." .. entry.name, fn)
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else
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local child = entry.name == "init.lua" and modname or (modname .. "." .. entry.name:match("^(.*)%.lua$"))
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if child then
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fn(child, path)
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end
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end
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end
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entries = vim.loop.fs_readdir(d)
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end
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vim.loop.fs_closedir(d)
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end
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end
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function M.hash(modpath)
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local stat = vim.loop.fs_stat(modpath)
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if stat then
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return stat.mtime.sec .. stat.mtime.nsec .. stat.size
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end
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end
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---@param opts? CacheOptions
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function M.boot(opts)
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if opts then
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for k, _ in pairs(M.options) do
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M.options[k] = opts[k] or M.options[k]
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end
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end
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M.load_state()
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-- preload core modules
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local root = debug.getinfo(1, "S").source:sub(2)
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root = vim.fn.fnamemodify(root, ":p:h")
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for _, modname in ipairs({ "util", "config", "plugin", "loader" }) do
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local file = root .. "/" .. modname .. ".lua"
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modname = "lazy." .. modname
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if not M.modules[modname] then
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M.modules[modname] = { file = file }
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end
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package.preload[modname] = function()
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return M.load(modname)
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end
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end
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end
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function M.setup()
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vim.api.nvim_create_autocmd("User", {
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pattern = "LazyDone",
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once = true,
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callback = function()
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vim.api.nvim_create_autocmd("VimLeavePre", {
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callback = function()
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if M.dirty then
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local hash = M.hash(M.options.cache)
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-- abort when the file was changed in the meantime
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if M.hash == nil or M.cache_hash == hash then
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M.compile()
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end
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end
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end,
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})
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end,
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})
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if M.state and M.load_plugins() then
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return true
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else
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M.dirty = true
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-- FIXME: what if module is a file
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local root = vim.fn.stdpath("config") .. "/lua/" .. M.options.module:gsub("%.", "/")
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if vim.loop.fs_stat(root .. ".lua") then
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if not M.modules[M.options.module] then
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M.modules[M.options.module] = { file = root .. ".lua" }
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end
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end
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M.walk(root, M.options.module, function(modname, modpath)
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if not M.modules[modname] then
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M.modules[modname] = { file = modpath }
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end
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end)
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end
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end
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---@param modname string
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function M.load(modname)
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local info = M.modules[modname]
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if type(package.loaded[modname]) == "table" then
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if info then
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info.used = true
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end
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return package.loaded[modname]
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end
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if info then
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local hash = M.hash(info.file)
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if hash ~= info.hash then
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info.chunk = nil
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end
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local err
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if not info.chunk then
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vim.schedule(function()
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vim.notify("loading " .. modname)
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end)
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info.chunk, err = loadfile(info.file)
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info.hash = hash
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M.dirty = true
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end
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if type(info.chunk) == "string" then
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info.chunk, err = loadstring(info.chunk --[[@as string]], "@" .. info.file)
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end
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if not info.chunk then
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error(err)
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end
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info.used = true
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---@type table
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local mod = info.chunk()
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package.loaded[modname] = mod
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return mod
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end
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end
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---@param state LazyState
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function M.write(state)
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local chunks = state.chunks
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state.chunks = nil
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local header = loadstring("return " .. M.dump(state))
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assert(header)
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table.insert(chunks, string.dump(header, true))
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vim.fn.mkdir(vim.fn.fnamemodify(M.options.cache, ":p:h"), "p")
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local f = assert(io.open(M.options.cache, "wb"))
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for _, chunk in ipairs(chunks) do
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f:write(tostring(#chunk), "\0", chunk)
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end
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f:close()
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end
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---@return LazyState?
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function M.read()
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M.cache_hash = M.hash(M.options.cache)
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local f = io.open(M.options.cache, "rb")
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if f then
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---@type string
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local data = f:read("*a")
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f:close()
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local from = 1
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local to = data:find("\0", from, true)
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---@type string[]
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local chunks = {}
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while to do
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local len = tonumber(data:sub(from, to - 1))
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from = to + 1
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local chunk = data:sub(from, from + len - 1)
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table.insert(chunks, chunk)
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from = from + len
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to = data:find("\0", from, true)
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end
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local state = loadstring(table.remove(chunks))
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assert(state)
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---@type LazyState
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local ret = state()
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ret.chunks = chunks
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return ret
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end
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end
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function M.compile()
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local Config = require("lazy.config")
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---@class LazyState
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local state = {
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---@type LazyPlugin[]
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plugins = {},
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---@type table<string, {file:string, hash:string, chunk:number}>
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modules = {},
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loaders = require("lazy.loader").loaders,
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-- config = Config.options,
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---@type string[]
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chunks = {},
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}
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local skip = { installed = true, loaded = true }
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-- plugins
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for _, plugin in pairs(Config.plugins) do
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-- mark module as used
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if M.modules[plugin.modname] then
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---@diagnostic disable-next-line: no-unknown
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M.modules[plugin.modname].used = true
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end
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---@type LazyPlugin | {_chunks: string[] | table<string, number>}
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local save = {}
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table.insert(state.plugins, save)
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for k, v in pairs(plugin) do
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if type(v) == "function" then
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save._chunks = save._chunks or {}
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if plugin.modname then
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table.insert(save._chunks, k)
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else
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table.insert(state.chunks, string.dump(v, M.options.trim))
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save._chunks[k] = #state.chunks
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end
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elseif not skip[k] then
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save[k] = v
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end
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end
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end
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-- modules
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for modname, entry in pairs(M.modules) do
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if entry.used and entry.chunk then
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table.insert(
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state.chunks,
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type(entry.chunk) == "string" and entry.chunk or string.dump(entry.chunk --[[@as fun()]], M.options.trim)
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)
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state.modules[modname] = { file = entry.file, hash = entry.hash, chunk = #state.chunks }
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end
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end
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M.write(state)
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end
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function M._dump(value, result)
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local t = type(value)
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if t == "number" or t == "boolean" then
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table.insert(result, tostring(value))
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elseif t == "string" then
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table.insert(result, ("%q"):format(value))
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elseif t == "table" then
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table.insert(result, "{")
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local i = 1
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---@diagnostic disable-next-line: no-unknown
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for k, v in pairs(value) do
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if k == i then
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elseif type(k) == "string" then
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table.insert(result, ("[%q]="):format(k))
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else
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table.insert(result, k .. "=")
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end
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M._dump(v, result)
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table.insert(result, ",")
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i = i + 1
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end
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table.insert(result, "}")
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else
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error("Unsupported type " .. t)
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end
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end
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function M.dump(value)
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local result = {}
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M._dump(value, result)
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return table.concat(result, "")
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end
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function M.load_state()
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M.state = M.read()
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if not M.state then
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return
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end
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local reload = false
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for modname, entry in pairs(M.state.modules) do
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entry.chunk = M.state.chunks[entry.chunk]
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---@cast entry ModEntry
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if M.hash(entry.file) ~= entry.hash then
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-- keep loading modules, but reset state (reload plugins)
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reload = true
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end
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M.modules[modname] = entry
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end
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if reload then
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M.state = nil
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end
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end
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local function load_plugin(plugin, fun, ...)
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local mod = M.load(plugin.modname)
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for k, v in pairs(mod) do
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if type(v) == "function" then
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plugin[k] = v
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end
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end
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return mod[fun](...)
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end
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function M.load_plugins()
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local Config = require("lazy.config")
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if not vim.deepcopy(Config.options, M.state.config) then
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return false
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end
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-- plugins
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for _, plugin in ipairs(M.state.plugins) do
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plugin.loaded = false
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plugin.installed = vim.loop.fs_stat(plugin.dir) and true
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if plugin._chunks then
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if plugin.modname then
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for _, fun in ipairs(plugin._chunks) do
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plugin[fun] = function(...)
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return load_plugin(plugin, fun, ...)
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end
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end
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else
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for fun, value in pairs(plugin._chunks) do
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plugin[fun] = function(...)
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plugin[fun] = loadstring(M.state.chunks[value])
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return plugin[fun](...)
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end
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end
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end
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plugin._chunks = nil
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end
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end
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-- loaders
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local Loader = require("lazy.loader")
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Loader.loaders = M.state.loaders
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-- save plugins
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Config.plugins = {}
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for _, plugin in ipairs(M.state.plugins) do
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Config.plugins[plugin.name] = plugin
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end
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return true
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end
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return M
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