fix(compiler): consider entire config when hashing

Related: projekt0n#262, projekt0n#340, projekt0n#341

Author: tmillr

CHANGELOG.md

@@ -25,6 +25,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 -   Closed #305 (no longer valid, fixed)
 -   Closed #292 (no longer valid, fixed)
 -   fix(config): `options.darken.floats` is not used (#345)
+-   fix(compiler): consider entire config when hashing (#350) (related to #262, #340, #341)
 
 ## [v1.0.2] - 03 May 2023
 

lua/github-theme/init.lua

@@ -1,4 +1,8 @@
 local config = require('github-theme.config')
+local override = require('github-theme.override')
+local keys = { 'palettes', 'specs', 'groups' }
+local did_setup = false
+local M = {}
 
 local function read_file(filepath)
   local file = io.open(filepath, 'r')
@@ -17,99 +21,91 @@ local function write_file(filepath, content)
   end
 end
 
-local M = {}
-
 function M.reset()
   require('github-theme.config').reset()
   require('github-theme.override').reset()
 end
 
 ---Compiles all themes/styles with their current settings.
+---@param force boolean true by default
 ---@return nil
-function M.compile()
-  require('github-theme.lib.log').clear()
-  local compiler = require('github-theme.lib.compiler')
-  local themes = require('github-theme.palette').themes
-  local current_theme = config.theme
-  for _, theme in ipairs(themes) do
-    -- Compile current theme last (see discussion in #290)
-    if theme ~= current_theme then
-      compiler.compile({ theme = theme })
-    end
-  end
-  compiler.compile({ theme = current_theme })
-end
+function M.compile(force)
+  local util = require('github-theme.util')
+  util.ensure_dir(config.options.compile_path)
 
--- Avoid g:colors_name reloading
-local lock = false
-local did_setup = false
+  local cached_path = util.join_paths(config.options.compile_path, 'cache')
+  local cached = read_file(cached_path)
+  local git_path =
+    vim.fn.fnamemodify(vim.fn.resolve(debug.getinfo(1).source:sub(2)), ':p:h:h:h')
+  local git = vim.fn.getftime(util.join_paths(git_path, '.git'))
 
-function M.load(opts)
-  if lock then
-    return
+  -- This is needed because neither `opts` nor `config` necessarily contain
+  -- everything we need to hash. For example, `opts` may not contain all
+  -- overrides and config currently in use (`setup()` might have been called
+  -- before, or maybe overrides were set directly and outside of `setup()`), and
+  -- `config` does not contain any of the overrides in use. Therefore, we need
+  -- to create a new table which contains everything in-use.
+  local dummy = { options = config.options }
+  for _, k in ipairs(keys) do
+    dummy[k] = override[k]
   end
 
-  if not did_setup then
-    M.setup()
+  local hash = require('github-theme.lib.hash')(dummy) .. (git == -1 and git_path or git)
+
+  if force ~= false or cached ~= hash then
+    require('github-theme.lib.log').clear()
+    local compiler = require('github-theme.lib.compiler')
+    local themes = require('github-theme.palette').themes
+    local current_theme = config.theme
+
+    for _, theme in ipairs(themes) do
+      -- Compile current theme last (see discussion in #290)
+      if theme ~= current_theme then
+        compiler.compile({ theme = theme })
+      end
+    end
+
+    compiler.compile({ theme = current_theme })
+    write_file(cached_path, hash)
   end
 
-  opts = opts or {}
+  getmetatable(override).__index.changed_since_last_compile = false
+end
 
+function M.load(opts)
+  opts = opts or {}
   local _, compiled_file = config.get_compiled_info(opts)
-  lock = true
-
   local f = loadfile(compiled_file)
-  if not f then
-    M.compile()
-    f = loadfile(compiled_file)
+
+  if not did_setup or override.changed_since_last_compile or not f then
+    M.setup()
+    f = f or loadfile(compiled_file)
   end
 
   ---@diagnostic disable-next-line: need-check-nil
   f()
-
   require('github-theme.autocmds').set_autocmds()
-  lock = false
 end
 
-M.setup = function(opts)
-  did_setup = true
+---Applies any new config or overrides then (re)compiles if needed.
+---@param opts? table
+function M.setup(opts)
   opts = opts or {}
-
-  local override = require('github-theme.override')
+  did_setup = true
 
   -- New configs
   if opts.options then
     config.set_options(opts.options)
   end
 
-  if opts.palettes ~= nil then
-    override.palettes = opts.palettes
-  end
-
-  if opts.specs ~= nil then
-    override.specs = opts.specs
-  end
-
-  if opts.groups ~= nil then
-    override.groups = opts.groups
-  end
-
-  local util = require('github-theme.util')
-  util.ensure_dir(config.options.compile_path)
-
-  local cached_path = util.join_paths(config.options.compile_path, 'cache')
-  local cached = read_file(cached_path)
-
-  local git_path =
-    vim.fn.fnamemodify(vim.fn.resolve(debug.getinfo(1).source:sub(2)), ':p:h:h:h')
-  local git = vim.fn.getftime(util.join_paths(git_path, '.git'))
-  local hash = require('github-theme.lib.hash')(opts) .. (git == -1 and git_path or git)
-
-  if cached ~= hash then
-    M.compile()
-    write_file(cached_path, hash)
+  for _, k in ipairs(keys) do
+    local v = opts[k]
+    if v ~= nil then
+      override[k] = v
+    end
   end
 
+  M.compile(false)
   require('github-theme.util.deprecation').check_deprecation(opts)
 end
 

lua/github-theme/lib/compiler.lua

@@ -38,11 +38,14 @@ function M.compile(opts)
       [[
 return string.dump(function()
 local h = vim.api.nvim_set_hl
-if vim.g.colors_name then vim.cmd("hi clear") end
+if vim.g.colors_name then
+vim.cmd("hi clear")
+-- vim.g.colors_name = nil
+end
 vim.o.termguicolors = true
-vim.g.colors_name = "%s"
 vim.o.background = "%s"
-    ]],
+vim.g.colors_name = "%s"
+]],
       opts.theme,
       background
     ),

lua/github-theme/override.lua

@@ -1,9 +1,8 @@
-local collect = require('github-theme.lib.collect')
 local M = {}
 
 function M.reset()
   getmetatable(M).__index =
-    { palettes = {}, specs = {}, groups = {}, has_override = false }
+    { palettes = {}, specs = {}, groups = {}, changed_since_last_compile = false }
   return M
 end
 
@@ -43,6 +42,8 @@ setmetatable(M, {
     local store = getmetatable(self).__index
 
     if type(store[k]) == 'table' then
+      store.changed_since_last_compile = true
+
       if not v then
         store[k] = {}
       elseif k == 'groups' then