Add bin and edit workflow

bin/gems/rouge-4.7.0/lib/rouge/lexers/haml.rb

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+# -*- coding: utf-8 -*- #
+# frozen_string_literal: true
+
+module Rouge
+  module Lexers
+    # A lexer for the Haml templating system for Ruby.
+    # @see http://haml.info
+    class Haml < RegexLexer
+      include Indentation
+
+      title "Haml"
+      desc "The Haml templating system for Ruby (haml.info)"
+
+      tag 'haml'
+      aliases 'HAML'
+
+      filenames '*.haml'
+      mimetypes 'text/x-haml'
+
+      option 'filters[filter_name]', 'Mapping of lexers to use for haml :filters'
+      attr_reader :filters
+      # @option opts :filters
+      #   A hash of filter name to lexer of how various filters should be
+      #   highlighted.  By default, :javascript, :css, :ruby, and :erb
+      #   are supported.
+      def initialize(opts={})
+        super
+
+        default_filters = {
+          'javascript' => Javascript.new(options),
+          'css' => CSS.new(options),
+          'ruby' => ruby,
+          'erb' => ERB.new(options),
+          'markdown' => Markdown.new(options),
+          'sass' => Sass.new(options),
+          # TODO
+          # 'textile' => Textile.new(options),
+          # 'maruku' => Maruku.new(options),
+        }
+
+        @filters = hash_option(:filters, default_filters) do |v|
+          as_lexer(v) || PlainText.new(@options)
+        end
+      end
+
+      def ruby
+        @ruby ||= Ruby.new(@options)
+      end
+
+      def html
+        @html ||= HTML.new(@options)
+      end
+
+      def ruby!(state)
+        ruby.reset!
+        push state
+      end
+
+      start { ruby.reset!; html.reset! }
+
+      identifier = /[\w:-]+/
+      ruby_var = /[a-z]\w*/
+
+      # Haml can include " |\n" anywhere,
+      # which is ignored and used to wrap long lines.
+      # To accomodate this, use this custom faux dot instead.
+      dot = /[ ]\|\n(?=.*[ ]\|)|./
+
+      state :root do
+        rule %r/\s*\n/, Text
+        rule(/\s*/) { |m| token Text; indentation(m[0]) }
+      end
+
+      state :content do
+        mixin :css
+        rule(/%#{identifier}/) { token Name::Tag; goto :tag }
+        rule %r/!!!#{dot}*\n/, Name::Namespace, :pop!
+        rule %r(
+          (/) (\[#{dot}*?\]) (#{dot}*\n)
+        )x do
+          groups Comment, Comment::Special, Comment
+          pop!
+        end
+
+        rule %r(/#{dot}*\n) do
+          token Comment
+          pop!
+          starts_block :html_comment_block
+        end
+
+        rule %r/-##{dot}*\n/ do
+          token Comment
+          pop!
+          starts_block :haml_comment_block
+        end
+
+        rule %r/-/ do
+          token Punctuation
+          reset_stack
+          ruby! :ruby_line
+        end
+
+        # filters
+        rule %r/:(#{dot}*)\n/ do |m|
+          token Name::Decorator
+          pop!
+          starts_block :filter_block
+
+          filter_name = m[1].strip
+
+          @filter_lexer = self.filters[filter_name]
+          @filter_lexer.reset! unless @filter_lexer.nil?
+
+          puts "    haml: filter #{filter_name.inspect} #{@filter_lexer.inspect}" if @debug
+        end
+
+        mixin :eval_or_plain
+      end
+
+      state :css do
+        rule(/\.#{identifier}/) { token Name::Class; goto :tag }
+        rule(/##{identifier}/) { token Name::Function; goto :tag }
+      end
+
+      state :tag do
+        mixin :css
+        rule(/[{]/) { token Punctuation; ruby! :ruby_tag }
+        rule(/\[#{dot}*?\]/) { delegate ruby }
+
+        rule %r/\(/, Punctuation, :html_attributes
+        rule %r/\s*\n/, Text, :pop!
+
+        # whitespace chompers
+        rule %r/[<>]{1,2}(?=[ \t=])/, Punctuation
+
+        mixin :eval_or_plain
+      end
+
+      state :plain do
+        rule(/([^#\n]|#[^{\n]|(\\\\)*\\#\{)+/) { delegate html }
+        mixin :interpolation
+        rule(/\n/) { token Text; reset_stack }
+      end
+
+      state :eval_or_plain do
+        rule %r/[&!]?==/, Punctuation, :plain
+        rule %r/[&!]?[=!]/ do
+          token Punctuation
+          reset_stack
+          ruby! :ruby_line
+        end
+
+        rule(//) { push :plain }
+      end
+
+      state :ruby_line do
+        rule %r/\n/, Text, :pop!
+        rule(/,[ \t]*\n/) { delegate ruby }
+        rule %r/[ ]\|[ \t]*\n/, Str::Escape
+        rule(/.*?(?=(,$| \|)?[ \t]*$)/) { delegate ruby }
+      end
+
+      state :ruby_tag do
+        mixin :ruby_inner
+      end
+
+      state :html_attributes do
+        rule %r/\s+/, Text
+        rule %r/#{identifier}\s*=/, Name::Attribute, :html_attribute_value
+        rule identifier, Name::Attribute
+        rule %r/\)/, Text, :pop!
+      end
+
+      state :html_attribute_value do
+        rule %r/\s+/, Text
+        rule ruby_var, Name::Variable, :pop!
+        rule %r/@#{ruby_var}/, Name::Variable::Instance, :pop!
+        rule %r/\$#{ruby_var}/, Name::Variable::Global, :pop!
+        rule %r/'(\\\\|\\'|[^'\n])*'/, Str, :pop!
+        rule %r/"(\\\\|\\"|[^"\n])*"/, Str, :pop!
+      end
+
+      state :html_comment_block do
+        rule %r/#{dot}+/, Comment
+        mixin :indented_block
+      end
+
+      state :haml_comment_block do
+        rule %r/#{dot}+/, Comment::Preproc
+        mixin :indented_block
+      end
+
+      state :filter_block do
+        rule %r/([^#\n]|#[^{\n]|(\\\\)*\\#\{)+/ do
+          if @filter_lexer
+            delegate @filter_lexer
+          else
+            token Name::Decorator
+          end
+        end
+
+        mixin :interpolation
+        mixin :indented_block
+      end
+
+      state :interpolation do
+        rule %r/#[{]/, Str::Interpol, :ruby
+      end
+
+      state :ruby do
+        rule %r/[}]/, Str::Interpol, :pop!
+        mixin :ruby_inner
+      end
+
+      state :ruby_inner do
+        rule(/[{]/) { delegate ruby; push :ruby_inner }
+        rule(/[}]/) { delegate ruby; pop! }
+        rule(/[^{}]+/) { delegate ruby }
+      end
+
+      state :indented_block do
+        rule(/\n/) { token Text; reset_stack }
+      end
+    end
+  end
+end