lib/treetop/compiler/node_classes/character_class.rb in treetop-1.1.4 vs lib/treetop/compiler/node_classes/character_class.rb in treetop-1.2.0

@@ -1,10 +1,19 @@
 module Treetop
   module Compiler    
     class CharacterClass < AtomicExpression
       def compile(address, builder, parent_expression = nil)
         super
-        assign_result "parse_char_class(/#{text_value}/, '#{elements[1].text_value.gsub(/'$/, "\\\\'")}', #{node_class_name}#{optional_arg(inline_module_name)})"
+        
+        builder.if__ "input.index(/#{text_value}/, index) == index" do
+          assign_result "(#{node_class_name}).new(input, index...(index + 1))"
+          extend_result_with_inline_module
+          builder << "@index += 1"
+        end
+        builder.else_ do
+          "terminal_parse_failure(#{single_quote(characters)})"
+          assign_result 'nil'
+        end
       end
     end
   end
 end
\ No newline at end of file