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# This file contains implementations of ruby core's custom objects for
# serialisation/deserialisation.
unless Object.const_defined?(:JSON) and ::JSON.const_defined?(:JSON_LOADED) and
::JSON::JSON_LOADED
require 'json'
end
require 'date'
class Symbol
def to_json(*a)
{
JSON.create_id => self.class.name,
's' => to_s,
}.to_json(*a)
end
def self.json_create(o)
o['s'].to_sym
end
end
class Time
def self.json_create(object)
if usec = object.delete('u') # used to be tv_usec -> tv_nsec
object['n'] = usec * 1000
end
if respond_to?(:tv_nsec)
at(*object.values_at('s', 'n'))
else
at(object['s'], object['n'] / 1000)
end
end
def to_json(*args)
{
JSON.create_id => self.class.name,
's' => tv_sec,
'n' => respond_to?(:tv_nsec) ? tv_nsec : tv_usec * 1000
}.to_json(*args)
end
end
class Date
def self.json_create(object)
civil(*object.values_at('y', 'm', 'd', 'sg'))
end
alias start sg unless method_defined?(:start)
def to_json(*args)
{
JSON.create_id => self.class.name,
'y' => year,
'm' => month,
'd' => day,
'sg' => start,
}.to_json(*args)
end
end
class 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)
def to_json(*args)
{
JSON.create_id => self.class.name,
'y' => year,
'm' => month,
'd' => day,
'H' => hour,
'M' => min,
'S' => sec,
'of' => offset.to_s,
'sg' => start,
}.to_json(*args)
end
end
class Range
def self.json_create(object)
new(*object['a'])
end
def to_json(*args)
{
JSON.create_id => self.class.name,
'a' => [ first, last, exclude_end? ]
}.to_json(*args)
end
end
class Struct
def self.json_create(object)
new(*object['v'])
end
def to_json(*args)
klass = self.class.name
klass.to_s.empty? and raise JSON::JSONError, "Only named structs are supported!"
{
JSON.create_id => klass,
'v' => values,
}.to_json(*args)
end
end
class Exception
def self.json_create(object)
result = new(object['m'])
result.set_backtrace object['b']
result
end
def to_json(*args)
{
JSON.create_id => self.class.name,
'm' => message,
'b' => backtrace,
}.to_json(*args)
end
end
class Regexp
def self.json_create(object)
new(object['s'], object['o'])
end
def to_json(*)
{
JSON.create_id => self.class.name,
'o' => options,
's' => source,
}.to_json
end
end
|
