class_util.rb in contrast-agent-3.11.0

- old
+ new

@@ -1,9 +1,10 @@
 # Copyright (c) 2020 Contrast Security, Inc. See https://www.contrastsecurity.com/enduser-terms-0317a for more details.
 # frozen_string_literal: true
 
 cs__scoped_require 'contrast/extensions/ruby_core/module'
+cs__scoped_require 'contrast/utils/object_share'
 
 module Contrast
   module Utils
     # Utility methods for exploring the complete space of Objects
     class ClassUtil
@@ -54,19 +55,22 @@
         # @param object [Object] the entity to convert to a String
         # @return [String] the human readable form of the String, as defined by
         #   https://bitbucket.org/contrastsecurity/assess-specifications/src/master/vulnerability/capture-snapshot.md
         def to_contrast_string object
           if object.cs__is_a?(String)
-            return Contrast::Utils::ObjectShare::EMPTY_STRING if object.empty?
+            cached = to_cached_string(object)
+            return cached if cached
 
             object.dup
           elsif object.cs__is_a?(Symbol)
             ":#{ object }"
           elsif object.cs__is_a?(Numeric)
             object.to_s
           elsif object.cs__is_a?(Module) || object.cs__is_a?(Class)
             "#{ object.cs__name }@#{ object.__id__ }"
+          elsif object.cs__is_a?(Regexp)
+            object.source
           else
             "#{ object.cs__class.cs__name }@#{ object.__id__ }"
           end
         end
 
@@ -104,9 +108,24 @@
           return mod if mod.singleton_class?
 
           return mod.cs__singleton_class unless is_instance
 
           mod
+        end
+
+        # If the String matches a common String in our ObjectShare, return that
+        # rather that for use as the representation of the String rather than
+        # forcing a duplication of the String.
+        #
+        # @param string [String] some string of which we want a Contrast
+        #   representation.
+        # @return [String,nil] the ObjectShare version of the String or nil
+        def to_cached_string string
+          return Contrast::Utils::ObjectShare::EMPTY_STRING if string.empty?
+          return Contrast::Utils::ObjectShare::SLASH if string == Contrast::Utils::ObjectShare::SLASH
+          return Contrast::Utils::ObjectShare::EQUALS if string == Contrast::Utils::ObjectShare::EQUALS
+
+          nil
         end
       end
     end
   end
 end