class Mocha::Invocation

def argument_description
  signature = arguments.mocha_inspect
  signature = signature.gsub(/^\[|\]$/, '')
  "(#{signature})"
end

def arguments
  @arguments.dup
end

def call(yield_parameters = YieldParameters.new, return_values = ReturnValues.new)
  yield_parameters.next_invocation.each do |yield_args|
    @yields << ParametersMatcher.new(yield_args)
    raise LocalJumpError unless @block
    @block.call(*yield_args)
  end
  return_values.next(self)
end

def call_description
  description = "#{@mock.mocha_inspect}.#{@method_name}#{argument_description}"
  description << ' { ... }' unless @block.nil?
  description
end

def full_description
  "\n  - #{call_description} #{result_description}"
end

def initialize(mock, method_name, arguments = [], block = nil)
  @mock = mock
  @method_name = method_name
  @arguments = arguments
  @block = block
  @yields = []
  @result = nil
end

def raised(exception)
  @result = RaisedException.new(exception)
end

def result_description
  desc = "# => #{@result.mocha_inspect}"
  desc << " after yielding #{@yields.map(&:mocha_inspect).join(', then ')}" if @yields.any?
  desc
end

def returned(value)
  @result = value
end

def short_call_description
  "#{@method_name}(#{@arguments.join(', ')})"
end

def threw(tag, value)
  @result = ThrownObject.new(tag, value)
end