Current File : //opt/alt/ruby19/lib64/ruby/1.9.1/json/add/core.rb
# This file contains implementations of ruby core's custom objects for
# serialisation/deserialisation.
unless defined?(::JSON::JSON_LOADED) and ::JSON::JSON_LOADED
require 'json'
end
require 'date'
# Symbol serialization/deserialization
class Symbol
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
's' => to_s,
}
end
# Stores class name (Symbol) with String representation of Symbol as a JSON string.
def to_json(*a)
as_json.to_json(*a)
end
# Deserializes JSON string by converting the <tt>string</tt> value stored in the object to a Symbol
def self.json_create(o)
o['s'].to_sym
end
end
# Time serialization/deserialization
class Time
# Deserializes JSON string by converting time since epoch to Time
def self.json_create(object)
if usec = object.delete('u') # used to be tv_usec -> tv_nsec
object['n'] = usec * 1000
end
if instance_methods.include?(:tv_nsec)
at(object['s'], Rational(object['n'], 1000))
else
at(object['s'], object['n'] / 1000)
end
end
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
nanoseconds = [ tv_usec * 1000 ]
respond_to?(:tv_nsec) and nanoseconds << tv_nsec
nanoseconds = nanoseconds.max
{
JSON.create_id => self.class.name,
's' => tv_sec,
'n' => nanoseconds,
}
end
# Stores class name (Time) with number of seconds since epoch and number of
# microseconds for Time as JSON string
def to_json(*args)
as_json.to_json(*args)
end
end
# Date serialization/deserialization
class Date
# Deserializes JSON string by converting Julian year <tt>y</tt>, month
# <tt>m</tt>, day <tt>d</tt> and Day of Calendar Reform <tt>sg</tt> to Date.
def self.json_create(object)
civil(*object.values_at('y', 'm', 'd', 'sg'))
end
alias start sg unless method_defined?(:start)
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
'y' => year,
'm' => month,
'd' => day,
'sg' => start,
}
end
# Stores class name (Date) with Julian year <tt>y</tt>, month <tt>m</tt>, day
# <tt>d</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string
def to_json(*args)
as_json.to_json(*args)
end
end
# DateTime serialization/deserialization
class DateTime
# Deserializes JSON string by converting year <tt>y</tt>, month <tt>m</tt>,
# day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>,
# offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> to DateTime.
def self.json_create(object)
args = object.values_at('y', 'm', 'd', 'H', 'M', 'S')
of_a, of_b = object['of'].split('/')
if of_b and of_b != '0'
args << Rational(of_a.to_i, of_b.to_i)
else
args << of_a
end
args << object['sg']
civil(*args)
end
alias start sg unless method_defined?(:start)
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
'y' => year,
'm' => month,
'd' => day,
'H' => hour,
'M' => min,
'S' => sec,
'of' => offset.to_s,
'sg' => start,
}
end
# Stores class name (DateTime) with Julian year <tt>y</tt>, month <tt>m</tt>,
# day <tt>d</tt>, hour <tt>H</tt>, minute <tt>M</tt>, second <tt>S</tt>,
# offset <tt>of</tt> and Day of Calendar Reform <tt>sg</tt> as JSON string
def to_json(*args)
as_json.to_json(*args)
end
end
# Range serialization/deserialization
class Range
# Deserializes JSON string by constructing new Range object with arguments
# <tt>a</tt> serialized by <tt>to_json</tt>.
def self.json_create(object)
new(*object['a'])
end
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
'a' => [ first, last, exclude_end? ]
}
end
# Stores class name (Range) with JSON array of arguments <tt>a</tt> which
# include <tt>first</tt> (integer), <tt>last</tt> (integer), and
# <tt>exclude_end?</tt> (boolean) as JSON string.
def to_json(*args)
as_json.to_json(*args)
end
end
# Struct serialization/deserialization
class Struct
# Deserializes JSON string by constructing new Struct object with values
# <tt>v</tt> serialized by <tt>to_json</tt>.
def self.json_create(object)
new(*object['v'])
end
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
klass = self.class.name
klass.to_s.empty? and raise JSON::JSONError, "Only named structs are supported!"
{
JSON.create_id => klass,
'v' => values,
}
end
# Stores class name (Struct) with Struct values <tt>v</tt> as a JSON string.
# Only named structs are supported.
def to_json(*args)
as_json.to_json(*args)
end
end
# Exception serialization/deserialization
class Exception
# Deserializes JSON string by constructing new Exception object with message
# <tt>m</tt> and backtrace <tt>b</tt> serialized with <tt>to_json</tt>
def self.json_create(object)
result = new(object['m'])
result.set_backtrace object['b']
result
end
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
'm' => message,
'b' => backtrace,
}
end
# Stores class name (Exception) with message <tt>m</tt> and backtrace array
# <tt>b</tt> as JSON string
def to_json(*args)
as_json.to_json(*args)
end
end
# Regexp serialization/deserialization
class Regexp
# Deserializes JSON string by constructing new Regexp object with source
# <tt>s</tt> (Regexp or String) and options <tt>o</tt> serialized by
# <tt>to_json</tt>
def self.json_create(object)
new(object['s'], object['o'])
end
# Returns a hash, that will be turned into a JSON object and represent this
# object.
def as_json(*)
{
JSON.create_id => self.class.name,
'o' => options,
's' => source,
}
end
# Stores class name (Regexp) with options <tt>o</tt> and source <tt>s</tt>
# (Regexp or String) as JSON string
def to_json(*)
as_json.to_json
end
end