Re: How to redesign big switch case?

From: Jeff Schwab (jeffplus_at_comcast.net)
Date: 03/22/04 

Date: Mon, 22 Mar 2004 09:04:13 -0500

Siemel Naran wrote:
> How to redesign big switch case?
>
> I wrote an editor that reads chars, and does a switch (char) to process the
> character. For example, if char is HOME then go to the beginning of the
> line, and if char is CTRL-RIGHT then go to the start of the next word. As I
> added more cases and support for reverse incremental history mode, the code
> grew longer and longer. It is now 562 lines, or 58% of the entire file.
> This seems a bit clumsy. Fortunately the code does not have any goto
> statements and seems pretty structured and clear to me, so it's not exactly
> sphaghetti code. Is it worthwhile to change the code? If yes, then how?
> Finally, it would be nice to allow users to derive their own editor class
> from my one and add support for more special keys.

How about an array with 256 elements, each of which points to the
appropriate behavior for the given value of the char?

Relevant Pages

  • Re: How to redesign big switch case?
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