module YARD module Templates module Helpers # Helper methods for syntax highlighting. module HtmlSyntaxHighlightHelper # Highlights Ruby source # @param [String] source the Ruby source code # @return [String] the highlighted Ruby source def html_syntax_highlight_ruby(source) if Parser::SourceParser.parser_type == :ruby html_syntax_highlight_ruby_ripper(source) else html_syntax_highlight_ruby_legacy(source) end end private def html_syntax_highlight_ruby_ripper(source) tokenlist = Parser::Ruby::RubyParser.parse(source, "(syntax_highlight)").tokens output = "" tokenlist.each do |s| output << "" if [:tstring_beg, :regexp_beg].include?(s[0]) case s.first when :nl, :ignored_nl, :sp output << h(s[1]) when :ident output << "#{h(s[1])}" else output << "#{h(s[1])}" end output << "" if [:tstring_end, :regexp_end].include?(s[0]) end output rescue Parser::ParserSyntaxError h(source) end def html_syntax_highlight_ruby_legacy(source) tokenlist = Parser::Ruby::Legacy::TokenList.new(source) tokenlist.map do |s| prettyclass = s.class.class_name.sub(/^Tk/, '').downcase prettysuper = s.class.superclass.class_name.sub(/^Tk/, '').downcase case s when Parser::Ruby::Legacy::RubyToken::TkWhitespace, Parser::Ruby::Legacy::RubyToken::TkUnknownChar h s.text when Parser::Ruby::Legacy::RubyToken::TkId prettyval = h(s.text) "#{prettyval}" else "#{h s.text}" end end.join end end end end end