[FEATURE] Add support for sass variables

Import support

import using use and import keyword

multiple imports in single line

multiple imports in multiple lines ( using commas )

recursive imports

watch imports for changes and automatically rehighlight buffer

buffer variables

recursive variables support

multiple variables in single line

parse imported files only when they are changed

Loosely based on https://github.com/norcalli/nvim-colorizer.lua/pull/22/files

1 files changed, 35 insertions, 14 deletions

diff --git a/lua/colorizer/buffer_utils.lua b/lua/colorizer/buffer_utils.lua
index a567d19..7801d0c 100644
--- a/lua/colorizer/buffer_utils.lua
+++ b/lua/colorizer/buffer_utils.lua
@@ -9,9 +9,10 @@ local set_highlight = api.nvim_set_hl
 
 local color_utils = require "colorizer.color_utils"
 local color_is_bright = color_utils.color_is_bright
+local sass_update_variables = color_utils.sass_update_variables
+local sass_cleanup = color_utils.sass_cleanup
 
-local matcher_utils = require "colorizer.matcher_utils"
-local make_matcher = matcher_utils.make_matcher
+local make_matcher = require("colorizer.matcher_utils").make_matcher
 
 local highlight_buffer, rehighlight_buffer
 local BUFFER_LINES = {}
@@ -159,8 +160,9 @@ local TW_LSP_CLIENT = {}
 ---@param line_end number: Last line to highlight
 ---@param options table: Configuration options as described in `setup`
 ---@param options_local table: Buffer local variables
----@return nil|boolean|number,function|nil
+---@return nil|boolean|number,table
 function highlight_buffer(buf, ns, lines, line_start, line_end, options, options_local)
+  local returns = { detach = { ns = {}, functions = {} } }
   if buf == 0 or buf == nil then
     buf = api.nvim_get_current_buf()
   end
@@ -168,7 +170,13 @@ function highlight_buffer(buf, ns, lines, line_start, line_end, options, options
   ns = ns or DEFAULT_NAMESPACE
   local loop_parse_fn = make_matcher(options)
   if not loop_parse_fn then
-    return false
+    return false, returns
+  end
+
+  -- only update sass varibled when text is changed
+  if options_local.__event ~= "WinScrolled" and options.sass and options.sass.enable then
+    table.insert(returns.detach.functions, sass_cleanup)
+    sass_update_variables(buf, 0, -1, nil, make_matcher(options.sass.parsers or { css = true }), options, options_local)
   end
 
   local data = {}
@@ -178,7 +186,7 @@ function highlight_buffer(buf, ns, lines, line_start, line_end, options, options
     -- Upvalues are options and current_linenum
     local i = 1
     while i < #line do
-      local length, rgb_hex = loop_parse_fn(line, i)
+      local length, rgb_hex = loop_parse_fn(line, i, buf)
       if length and rgb_hex then
         local name = create_highlight(rgb_hex, mode)
         local d = data[current_linenum] or {}
@@ -193,7 +201,7 @@ function highlight_buffer(buf, ns, lines, line_start, line_end, options, options
   add_highlight(options, buf, ns, data, line_start, line_end)
 
   if not options.tailwind or (options.tailwind ~= "lsp" and options.tailwind ~= "both") then
-    return
+    return true, returns
   end
 
   if not TW_LSP_CLIENT[buf] or TW_LSP_CLIENT[buf].is_stopped() then
@@ -246,11 +254,15 @@ function highlight_buffer(buf, ns, lines, line_start, line_end, options, options
     end)
     tailwind_client = ok and tailwind_client or {}
     if vim.tbl_isempty(tailwind_client) then
-      return DEFAULT_NAMESPACE_TAILWIND, del_tailwind_stuff
+      table.insert(returns.detach.functions, del_tailwind_stuff)
+      table.insert(returns.detach.ns, DEFAULT_NAMESPACE_TAILWIND)
+      return true, returns
     end
 
     if not tailwind_client[1] or not tailwind_client[1].supports_method "textDocument/documentColor" then
-      return DEFAULT_NAMESPACE_TAILWIND, del_tailwind_stuff
+      table.insert(returns.detach.functions, del_tailwind_stuff)
+      table.insert(returns.detach.ns, DEFAULT_NAMESPACE_TAILWIND)
+      return true, returns
     end
 
     TW_LSP_CLIENT[buf] = tailwind_client[1]
@@ -260,13 +272,18 @@ function highlight_buffer(buf, ns, lines, line_start, line_end, options, options
       highlight_buffer_tailwind(buf, DEFAULT_NAMESPACE_TAILWIND, mode, options)
     end, 100)
 
-    return DEFAULT_NAMESPACE_TAILWIND, del_tailwind_stuff
+    table.insert(returns.detach.functions, del_tailwind_stuff)
+    table.insert(returns.detach.ns, DEFAULT_NAMESPACE_TAILWIND)
+
+    return true, returns
   end
 
   -- only try to do tailwindcss highlight if lsp is attached
   if TW_LSP_CLIENT[buf] then
     highlight_buffer_tailwind(buf, DEFAULT_NAMESPACE_TAILWIND, mode, options)
   end
+
+  return true, returns
 end
 
 -- get the amount lines to highlight
@@ -288,7 +305,7 @@ local function getrow(buf)
   if old_min and old_max then
     -- Triggered for TextChanged autocmds
     -- TODO: Find a way to just apply highlight to changed text lines
-    if old_max == new_max then
+    if (old_max == new_max) or (old_min == new_min) then
       min, max = new_min, new_max
     -- Triggered for WinScrolled autocmd - Scroll Down
     elseif old_max < new_max then
@@ -318,7 +335,7 @@ end
 ---@param options table: Buffer options
 ---@param options_local table|nil: Buffer local variables
 ---@param use_local_lines boolean|nil Whether to use lines num range from options_local
----@return nil|boolean|number,function|nil
+---@return nil|boolean|number,table
 function rehighlight_buffer(buf, options, options_local, use_local_lines)
   if buf == 0 or buf == nil then
     buf = api.nvim_get_current_buf()
@@ -328,13 +345,17 @@ function rehighlight_buffer(buf, options, options_local, use_local_lines)
 
   local min, max
   if use_local_lines and options_local then
-    min, max = options_local.__startline, options_local.__endline
+    min, max = options_local.__startline or 0, options_local.__endline or -1
   else
     min, max = getrow(buf)
   end
-
   local lines = buf_get_lines(buf, min, max, false)
-  return highlight_buffer(buf, ns, lines, min, max, options, options_local or {})
+
+  local bool, returns = highlight_buffer(buf, ns, lines, min, max, options, options_local or {})
+  table.insert(returns.detach.functions, function()
+    BUFFER_LINES[buf] = nil
+  end)
+  return bool, returns
 end
 
 --- @export