Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with
or
.
Download ZIP
Tag: v1.1.1
Fetching contributors…

Cannot retrieve contributors at this time

38 lines (33 sloc) 1.003 kB
require 'active_support/json/encoders'
module ActiveSupport
module JSON #:nodoc:
class CircularReferenceError < StandardError #:nodoc:
end
# returns the literal string as its JSON encoded form. Useful for passing javascript variables into functions.
#
# page.call 'Element.show', ActiveSupport::JSON::Variable.new("$$(#items li)")
class Variable < String #:nodoc:
def to_json
self
end
end
class << self
REFERENCE_STACK_VARIABLE = :json_reference_stack
def encode(value)
raise_on_circular_reference(value) do
Encoders[value.class].call(value)
end
end
protected
def raise_on_circular_reference(value)
stack = Thread.current[REFERENCE_STACK_VARIABLE] ||= []
raise CircularReferenceError, 'object references itself' if
stack.include? value
stack << value
yield
ensure
stack.pop
end
end
end
end
Jump to Line
Something went wrong with that request. Please try again.