class Exception

Reopens the `Exception` class to add a convenient way of appending user data to an exception at the time of the raise.

@example

raise ArgumentError.new("value must be a number", value: value) unless value.kind_of?(Fixnum)

Public Class Methods

new(*args) click to toggle source

@overload new(message, user_data={})

Creates a new exception instance, optionally with user data.
@param [String] message The exception message.
@param [Hash] user_data Additional data to report to Squash about the
  exception.
@return [Exception] The initialized exception.
@raise [ArgumentError] If `data` contains the keys `mesg` or `bt`.

Calls superclass method

# File lib/squash/ruby/exception_additions.rb, line 31
def self.new(*args)
  user_data = if args.last.is_a?(Hash)
                args.pop
              else
                {}
              end
  super(*args).user_data(user_data)
end

Public Instance Methods

user_data(data) click to toggle source

Annotates this exception with user data. Merges in any new data with existing user data.

@param [Hash] data The user data to add. @return [Exception] The receiver. @raise [ArgumentError] If `data` contains the keys `mesg` or `bt`.

# File lib/squash/ruby/exception_additions.rb, line 47
def user_data(data)
  Squash::Ruby.check_user_data data
  data.each do |ivar, value|
    instance_variable_set :"@#{ivar}", value
  end
  self
end