Module: Kernel

Defined in:

lib/cond.rb

Instance Method Summary

• #raise(*args) ⇒ Object (also: #fail)

Instance Method Details

#raise(*args) ⇒ Object Also known as: fail

# File 'lib/cond.rb', line 401

def raise(*args)
  if Cond.handlers_stack.last.empty?
    # not using Cond
    Cond.original_raise(*args)
  else
    last_exception, current_handler = Cond.exception_stack.last
    exception = (
      if last_exception and args.empty?
        last_exception
      else
        begin
          Cond.original_raise(*args)
        rescue Exception => e
          e
        end
      end
    )
    if current_handler
      # inside a handler
      handler = loop {
        Cond.reraise_count += 1
        handlers = Cond.handlers_stack[-1 - Cond.reraise_count]
        if handlers.nil?
          break nil
        end
        found = Cond.find_handler_from(handlers, exception.class)
        if found and found != current_handler
          break found
        end
      }
      if handler
        handler.call(exception)
      else
        Cond.reraise_count = 0
        Cond.original_raise(exception)
      end
    else
      # not inside a handler
      Cond.reraise_count = 0
      handler = Cond.find_handler(exception.class)
      if handler
        Cond.exception_stack.push([exception, handler])
        begin
          handler.call(exception)
        ensure
          Cond.exception_stack.pop
        end
      else
        Cond.original_raise(exception)
      end
    end
  end
end