diff options
Diffstat (limited to 'activesupport/lib/active_support/json/encoding.rb')
-rw-r--r-- | activesupport/lib/active_support/json/encoding.rb | 61 |
1 files changed, 24 insertions, 37 deletions
diff --git a/activesupport/lib/active_support/json/encoding.rb b/activesupport/lib/active_support/json/encoding.rb index 8d8557fe3d..c9840e9faa 100644 --- a/activesupport/lib/active_support/json/encoding.rb +++ b/activesupport/lib/active_support/json/encoding.rb @@ -10,7 +10,6 @@ require 'active_support/core_ext/object/instance_variables' require 'active_support/core_ext/time/conversions' require 'active_support/core_ext/date_time/conversions' require 'active_support/core_ext/date/conversions' -require 'set' module ActiveSupport class << self @@ -31,56 +30,22 @@ module ActiveSupport end module Encoding #:nodoc: - class CircularReferenceError < StandardError; end - class Encoder attr_reader :options def initialize(options = nil) @options = options || {} - @seen = Set.new end - def encode(value, use_options = true) - check_for_circular_references(value) do - jsonified = use_options ? value.as_json(options_for(value)) : value.as_json - jsonified.encode_json(self) - end - end - - # like encode, but only calls as_json, without encoding to string. - def as_json(value, use_options = true) - check_for_circular_references(value) do - use_options ? value.as_json(options_for(value)) : value.as_json - end - end - - def options_for(value) - if value.is_a?(Array) || value.is_a?(Hash) - # hashes and arrays need to get encoder in the options, so that - # they can detect circular references. - options.merge(:encoder => self) - else - options.dup - end + def encode(value) + value.as_json(options.dup).encode_json(self) end def escape(string) Encoding.escape(string) end - - private - def check_for_circular_references(value) - unless @seen.add?(value.__id__) - raise CircularReferenceError, 'object references itself' - end - yield - ensure - @seen.delete(value.__id__) - end end - ESCAPED_CHARS = { "\x00" => '\u0000', "\x01" => '\u0001', "\x02" => '\u0002', "\x03" => '\u0003', "\x04" => '\u0004', "\x05" => '\u0005', @@ -135,6 +100,28 @@ module ActiveSupport json.force_encoding(::Encoding::UTF_8) json end + + # Deprecate CircularReferenceError + def const_missing(name) + if name == :CircularReferenceError + message = "The JSON encoder in Rails 4.1 no longer offers protection from circular references. " \ + "You are seeing this warning because you are rescuing from (or otherwise referencing) " \ + "ActiveSupport::Encoding::CircularReferenceError. In the future, this error will be " \ + "removed from Rails. You should remove these rescue blocks from your code and ensure " \ + "that your data structures are free of circular references so they can be properly " \ + "serialized into JSON.\n\n" \ + "For example, the following Hash contains a circular reference to itself:\n" \ + " h = {}\n" \ + " h['circular'] = h\n" \ + "In this case, calling h.to_json would not work properly." + + ActiveSupport::Deprecation.warn message + + SystemStackError + else + super + end + end end self.use_standard_json_time_format = true |