Contents

module Rouge
  module Lexers
    class ERB < RegexLexer
      tag 'erb'
      aliases 'eruby', 'rhtml'

      filenames '*.erb', '*.erubis', '*.rhtml', '*.eruby'

      def self.analyze_text(text)
        return 0.4 if text =~ /<%.*%>/
      end

      def initialize(opts={})
        @parent = opts.delete(:parent) || 'html'
        if @parent.is_a? String
          lexer_class = Lexer.find(@parent)
          @parent = lexer_class.new(opts)
        end

        @ruby_lexer = Ruby.new(opts)

        super(opts)
      end

      start do
        @parent.reset!
        @ruby_lexer.reset!
      end

      open  = /<%%|<%=|<%#|<%-|<%/
      close = /%%>|-%>|%>/

      state :root do
        rule /<%#/, 'Comment', :comment

        rule open, 'Comment.Preproc', :ruby

        rule /.+?(?=#{open})|.+/m do
          delegate @parent
        end
      end

      state :comment do
        rule close, 'Comment', :pop!
        rule /.+(?=#{close})|.+/m, 'Comment'
      end

      state :ruby do
        rule close, 'Comment.Preproc', :pop!

        rule /.+?(?=#{close})|.+/m do
          delegate @ruby_lexer
        end
      end
    end
  end
end

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
rouge-0.1.2	lib/rouge/lexers/erb.rb
rouge-0.1.1	lib/rouge/lexers/erb.rb
rouge-0.1.0	lib/rouge/lexers/erb.rb