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From: tmoran@acm.org
Newsgroups: comp.lang.ada
Subject: Re: Array of exception
References: <slrn9rj4q6.kf.lutz@taranis.iks-jena.de>
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Date: Tue, 02 Oct 2001 20:23:11 GMT
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>     when -1 => raise EXXX;
>     when -2 => raise EYYY;
>     ...
>Using Exception_Id and Raise_Expression require me to rewrite the whole CASE
>into an explicit array so I do not shorten the source code anyway. Only the
  Clarify please.  It appears that somewhere you need to establish the
relation between, eg, -2 and EYYY.  Is
   case res is
      when -1 => raise EXXX;
      when -2 => raise EYYY;
      ...
preferable to
   jump : constant array(...) of Exception_ID :=
     (-1 => EXXX'Identity,
      -2 => EYYY'Identity,
      ...
Of course one always wonders if a jump table is the best approach for the
problem at hand.