[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, 16 insertions, 2 deletions

diff --git a/lua/colorizer/matcher_utils.lua b/lua/colorizer/matcher_utils.lua
index 29cd5e9..7803eac 100644
--- a/lua/colorizer/matcher_utils.lua
+++ b/lua/colorizer/matcher_utils.lua
@@ -5,6 +5,7 @@ local min, max = math.min, math.max
 
 local color_utils = require "colorizer.color_utils"
 local color_name_parser = color_utils.color_name_parser
+local sass_name_parser = color_utils.sass_name_parser
 local rgba_hex_parser = color_utils.rgba_hex_parser
 
 local parser = {}
@@ -13,6 +14,7 @@ parser["_rgb"] = color_utils.rgb_function_parser
 parser["_rgba"] = color_utils.rgba_function_parser
 parser["_hsl"] = color_utils.hsl_function_parser
 parser["_hsla"] = color_utils.hsla_function_parser
+local b_hash, dollar_hash = ("#"):byte(), ("$"):byte()
 
 ---Form a trie stuct with the given prefixes
 ---@param matchers table: List of prefixes, {"rgb", "hsl"}
@@ -21,8 +23,7 @@ parser["_hsla"] = color_utils.hsla_function_parser
 local function compile_matcher(matchers, matchers_trie)
   local trie = Trie(matchers_trie)
 
-  local b_hash = ("#"):byte()
-  local function parse_fn(line, i)
+  local function parse_fn(line, i, buf)
     -- prefix #
     if matchers.rgba_hex_parser then
       if line:byte(i) == b_hash then
@@ -30,6 +31,13 @@ local function compile_matcher(matchers, matchers_trie)
       end
     end
 
+    -- prefix $, SASS Colour names
+    if matchers.sass_name_parser then
+      if line:byte(i) == dollar_hash then
+        return sass_name_parser(line, i, buf)
+      end
+    end
+
     -- Prefix 0x, rgba, rgb, hsla, hsl
     local prefix = trie:longest_prefix(line, i)
     if prefix then
@@ -55,6 +63,7 @@ local MATCHER_CACHE = {}
 ---@return function|boolean: function which will just parse the line for enabled parsers
 local function make_matcher(options)
   local enable_names = options.css or options.names
+  local enable_sass = options.sass and options.sass.enable
   local enable_tailwind = options.tailwind
   local enable_RGB = options.css or options.RGB
   local enable_RRGGBB = options.css or options.RRGGBB
@@ -74,6 +83,7 @@ local function make_matcher(options)
     + ((enable_tailwind == true or enable_tailwind == "normal") and 1 or 7)
     + (enable_tailwind == "lsp" and 1 or 8)
     + (enable_tailwind == "both" and 1 or 9)
+    + (enable_sass and 1 or 10)
 
   if matcher_key == 0 then
     return false
@@ -92,6 +102,10 @@ local function make_matcher(options)
     matchers.color_name_parser = { tailwind = options.tailwind }
   end
 
+  if enable_sass then
+    matchers.sass_name_parser = true
+  end
+
   local valid_lengths = { [3] = enable_RGB, [6] = enable_RRGGBB, [8] = enable_RRGGBBAA }
   local minlen, maxlen
   for k, v in pairs(valid_lengths) do