Replace custom css parser with crass

Author: stoivo

Gemfile.lock

@@ -3,6 +3,7 @@ PATH
   specs:
     css_parser (1.18.0)
       addressable
+      crass (~> 1.0)
 
 GEM
   remote: https://rubygems.org/
@@ -12,6 +13,7 @@ GEM
     ast (2.4.2)
     benchmark-ips (2.13.0)
     bump (0.10.0)
+    crass (1.0.6)
     debug (1.9.2)
       irb (~> 1.10)
       reline (>= 0.3.8)
@@ -68,8 +70,8 @@ GEM
     webrick (1.8.1)
 
 PLATFORMS
+  arm64-darwin-22
   java
-  ruby
 
 DEPENDENCIES
   benchmark-ips

css_parser.gemspec

@@ -18,5 +18,6 @@ Gem::Specification.new name, CssParser::VERSION do |s|
   s.metadata['bug_tracker_uri'] = 'https://github.com/premailer/css_parser/issues'
   s.metadata['rubygems_mfa_required'] = 'true'
 
-  s.add_runtime_dependency 'addressable'
+  s.add_dependency 'addressable'
+  s.add_dependency 'crass', '~> 1.0'
 end

lib/css_parser.rb

@@ -7,6 +7,7 @@
 require 'zlib'
 require 'stringio'
 require 'iconv' unless String.method_defined?(:encode)
+require 'crass'
 
 require 'css_parser/version'
 require 'css_parser/rule_set'