class Pry::LastException

def bt_source_location_for(index)
  backtrace[index] =~ /(.*):(\d+)/
  [::Regexp.last_match(1), ::Regexp.last_match(2).to_i]
end

def inc_bt_index
  @bt_index = (@bt_index + 1) % backtrace.size
end

def initialize(exception)
  @exception = exception
  @bt_index = 0
  @file, @line = bt_source_location_for(0)
end

def method_missing(name, *args, &block)
  if @exception.respond_to?(name)
    @exception.public_send(name, *args, &block)
  else
    super
  end
end

def respond_to_missing?(name, include_all = false)
  @exception.respond_to?(name, include_all)
end

def wrapped_exception
  @exception
end