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require "active_support/notifications"
require "active_support/core_ext/array/wrap"
module ActiveSupport
module Deprecation
class << self
# Whether to print a backtrace along with the warning.
attr_accessor :debug
# Returns the set behavior or if one isn't set, defaults to +:stderr+
def behavior
@behavior ||= [DEFAULT_BEHAVIORS[:stderr]]
end
# Sets the behavior to the specified value. Can be a single value or an array.
#
# Examples
#
# ActiveSupport::Deprecation.behavior = :stderr
# ActiveSupport::Deprecation.behavior = [:stderr, :log]
def behavior=(behavior)
@behavior = Array.wrap(behavior).map { |b| DEFAULT_BEHAVIORS[b] || b }
end
end
# Default warning behaviors per Rails.env.
DEFAULT_BEHAVIORS = {
:stderr => Proc.new { |message, callstack|
$stderr.puts(message)
$stderr.puts callstack.join("\n ") if debug
},
:log => Proc.new { |message, callstack|
logger =
if defined?(Rails) && Rails.logger
Rails.logger
else
require 'logger'
Logger.new($stderr)
end
logger.warn message
logger.debug callstack.join("\n ") if debug
},
:notify => Proc.new { |message, callstack|
ActiveSupport::Notifications.instrument("deprecation.rails",
:message => message, :callstack => callstack)
}
}
end
end
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