/usr/lib/ruby/vendor_ruby/active_support/core_ext/object/json.rb is in ruby-activesupport 2:4.2.10-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 | # Hack to load json gem first so we can overwrite its to_json.
require 'json'
require 'bigdecimal'
require 'active_support/core_ext/big_decimal/conversions' # for #to_s
require 'active_support/core_ext/hash/except'
require 'active_support/core_ext/hash/slice'
require 'active_support/core_ext/object/instance_variables'
require 'time'
require 'active_support/core_ext/time/conversions'
require 'active_support/core_ext/date_time/conversions'
require 'active_support/core_ext/date/conversions'
require 'active_support/core_ext/module/aliasing'
# The JSON gem adds a few modules to Ruby core classes containing :to_json definition, overwriting
# their default behavior. That said, we need to define the basic to_json method in all of them,
# otherwise they will always use to_json gem implementation, which is backwards incompatible in
# several cases (for instance, the JSON implementation for Hash does not work) with inheritance
# and consequently classes as ActiveSupport::OrderedHash cannot be serialized to json.
#
# On the other hand, we should avoid conflict with ::JSON.{generate,dump}(obj). Unfortunately, the
# JSON gem's encoder relies on its own to_json implementation to encode objects. Since it always
# passes a ::JSON::State object as the only argument to to_json, we can detect that and forward the
# calls to the original to_json method.
#
# It should be noted that when using ::JSON.{generate,dump} directly, ActiveSupport's encoder is
# bypassed completely. This means that as_json won't be invoked and the JSON gem will simply
# ignore any options it does not natively understand. This also means that ::JSON.{generate,dump}
# should give exactly the same results with or without active support.
[Enumerable, Object, Array, FalseClass, Float, Hash, Integer, NilClass, String, TrueClass].each do |klass|
klass.class_eval do
def to_json_with_active_support_encoder(options = nil) # :nodoc:
if options.is_a?(::JSON::State)
# Called from JSON.{generate,dump}, forward it to JSON gem's to_json
self.to_json_without_active_support_encoder(options)
else
# to_json is being invoked directly, use ActiveSupport's encoder
ActiveSupport::JSON.encode(self, options)
end
end
alias_method_chain :to_json, :active_support_encoder
end
end
class Object
def as_json(options = nil) #:nodoc:
if respond_to?(:to_hash)
to_hash.as_json(options)
else
instance_values.as_json(options)
end
end
end
class Struct #:nodoc:
def as_json(options = nil)
Hash[members.zip(values)].as_json(options)
end
end
class TrueClass
def as_json(options = nil) #:nodoc:
self
end
end
class FalseClass
def as_json(options = nil) #:nodoc:
self
end
end
class NilClass
def as_json(options = nil) #:nodoc:
self
end
end
class String
def as_json(options = nil) #:nodoc:
self
end
end
class Symbol
def as_json(options = nil) #:nodoc:
to_s
end
end
class Numeric
def as_json(options = nil) #:nodoc:
self
end
end
class Float
# Encoding Infinity or NaN to JSON should return "null". The default returns
# "Infinity" or "NaN" which are not valid JSON.
def as_json(options = nil) #:nodoc:
finite? ? self : nil
end
end
class BigDecimal
# A BigDecimal would be naturally represented as a JSON number. Most libraries,
# however, parse non-integer JSON numbers directly as floats. Clients using
# those libraries would get in general a wrong number and no way to recover
# other than manually inspecting the string with the JSON code itself.
#
# That's why a JSON string is returned. The JSON literal is not numeric, but
# if the other end knows by contract that the data is supposed to be a
# BigDecimal, it still has the chance to post-process the string and get the
# real value.
def as_json(options = nil) #:nodoc:
finite? ? to_s : nil
end
end
class Regexp
def as_json(options = nil) #:nodoc:
to_s
end
end
module Enumerable
def as_json(options = nil) #:nodoc:
to_a.as_json(options)
end
end
class Range
def as_json(options = nil) #:nodoc:
to_s
end
end
class Array
def as_json(options = nil) #:nodoc:
map { |v| options ? v.as_json(options.dup) : v.as_json }
end
end
class Hash
def as_json(options = nil) #:nodoc:
# create a subset of the hash by applying :only or :except
subset = if options
if attrs = options[:only]
slice(*Array(attrs))
elsif attrs = options[:except]
except(*Array(attrs))
else
self
end
else
self
end
Hash[subset.map { |k, v| [k.to_s, options ? v.as_json(options.dup) : v.as_json] }]
end
end
class Time
def as_json(options = nil) #:nodoc:
if ActiveSupport::JSON::Encoding.use_standard_json_time_format
xmlschema(ActiveSupport::JSON::Encoding.time_precision)
else
%(#{strftime("%Y/%m/%d %H:%M:%S")} #{formatted_offset(false)})
end
end
end
class Date
def as_json(options = nil) #:nodoc:
if ActiveSupport::JSON::Encoding.use_standard_json_time_format
strftime("%Y-%m-%d")
else
strftime("%Y/%m/%d")
end
end
end
class DateTime
def as_json(options = nil) #:nodoc:
if ActiveSupport::JSON::Encoding.use_standard_json_time_format
xmlschema(ActiveSupport::JSON::Encoding.time_precision)
else
strftime('%Y/%m/%d %H:%M:%S %z')
end
end
end
class Process::Status #:nodoc:
def as_json(options = nil)
{ :exitstatus => exitstatus, :pid => pid }
end
end
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