feat: rewrite of spec resolving

lua/lazy/core/fragments.lua

@@ -0,0 +1,159 @@
+local Config = require("lazy.core.config")
+
+local M = {}
+
+M._fid = 0
+
+local function next_id()
+  M._fid = M._fid + 1
+  return M._fid
+end
+
+---@class LazyFragments
+---@field fragments table<number, LazyFragment>
+---@field frag_stack number[]
+---@field dep_stack number[]
+---@field dirty table<number, boolean>
+---@field spec LazySpecLoader
+local F = {}
+
+---@param spec LazySpecLoader
+---@return LazyFragments
+function M.new(spec)
+  local self = setmetatable({}, { __index = F })
+  self.fragments = {}
+  self.frag_stack = {}
+  self.dep_stack = {}
+  self.spec = spec
+  self.dirty = {}
+  return self
+end
+
+---@param id number
+function F:get(id)
+  return self.fragments[id]
+end
+
+---@param id number
+function F:del(id)
+  -- del fragment
+  local fragment = self.fragments[id]
+  if not fragment then
+    return
+  end
+
+  self.dirty[id] = true
+
+  -- remove from parent
+  local pid = fragment.pid
+  if pid then
+    local parent = self.fragments[pid]
+    if parent.frags then
+      ---@param fid number
+      parent.frags = vim.tbl_filter(function(fid)
+        return fid ~= id
+      end, parent.frags)
+    end
+    if parent.deps then
+      ---@param fid number
+      parent.deps = vim.tbl_filter(function(fid)
+        return fid ~= id
+      end, parent.deps)
+    end
+    self.dirty[pid] = true
+  end
+
+  -- remove children
+  if fragment.frags then
+    for _, fid in ipairs(fragment.frags) do
+      self:del(fid)
+    end
+  end
+
+  self.fragments[id] = nil
+end
+
+---@param plugin LazyPluginSpec
+function F:add(plugin)
+  local id = next_id()
+
+  local pid = self.frag_stack[#self.frag_stack]
+
+  ---@type LazyFragment
+  local fragment = {
+    id = id,
+    pid = pid,
+    name = plugin.name,
+    url = plugin.url,
+    dir = plugin.dir,
+    spec = plugin --[[@as LazyPlugin]],
+  }
+
+  -- short url / ref
+  if plugin[1] then
+    local slash = plugin[1]:find("/", 1, true)
+    if slash then
+      local prefix = plugin[1]:sub(1, 4)
+      if prefix == "http" or prefix == "git@" then
+        fragment.url = fragment.url or plugin[1]
+      else
+        fragment.name = fragment.name or plugin[1]:sub(slash + 1)
+        fragment.url = fragment.url or Config.options.git.url_format:format(plugin[1])
+      end
+    else
+      fragment.name = fragment.name or plugin[1]
+    end
+  end
+
+  -- name
+  fragment.name = fragment.name
+    or fragment.url and self.spec.get_name(fragment.url)
+    or fragment.dir and self.spec.get_name(fragment.dir)
+  if not fragment.name then
+    return self.spec:error("Invalid plugin spec " .. vim.inspect(plugin))
+  end
+
+  if type(plugin.config) == "table" then
+    self.spec:warn(
+      "{" .. fragment.name .. "}: setting a table to `Plugin.config` is deprecated. Please use `Plugin.opts` instead"
+    )
+    ---@diagnostic disable-next-line: assign-type-mismatch
+    plugin.opts = plugin.config
+    plugin.config = nil
+  end
+
+  self.fragments[id] = fragment
+
+  -- add to parent
+  if pid then
+    local parent = self.fragments[pid]
+    parent.frags = parent.frags or {}
+    table.insert(parent.frags, id)
+  end
+
+  -- add to parent's deps
+  local did = self.dep_stack[#self.dep_stack]
+  if did and did == pid then
+    fragment.dep = true
+    local parent = self.fragments[did]
+    parent.deps = parent.deps or {}
+    table.insert(parent.deps, id)
+  end
+
+  table.insert(self.frag_stack, id)
+  -- dependencies
+  if plugin.dependencies then
+    table.insert(self.dep_stack, id)
+    self.spec:normalize(plugin.dependencies)
+    table.remove(self.dep_stack)
+  end
+  -- child specs
+  if plugin.specs then
+    self.spec:normalize(plugin.specs)
+  end
+  table.remove(self.frag_stack)
+
+  return fragment
+end
+
+return M