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Re: Warning message using stringWithContentsOfFile:encoding:error:
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Re: Warning message using stringWithContentsOfFile:encoding:error:


  • Subject: Re: Warning message using stringWithContentsOfFile:encoding:error:
  • From: Jens Alfke <email@hidden>
  • Date: Sun, 28 Oct 2012 12:08:00 -0700

On Oct 28, 2012, at 11:03 AM, Quincey Morris <email@hidden> wrote:

> The thing that bothers me is why macros should be substituting into method parameter names at all.

The preprocessor barely knows anything about C syntax, let alone Obj-C. Remember, it’s running before the parser — all it gets is a stream of tokens. It just sees an identifier followed by a “:”, and there’s a macro defined for that identifier, so it substitutes it.

> It potentially brings *pieces* of method names into the global symbol namespace -- which is basically what happened to Paul, if you look at his problem from the other end. That possibility seems nightmarish to me.

“Nightmarish” is a pretty good description of the malign possibilities of the C preprocessor in general. :-P

—Jens
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References: 
 >Warning message using stringWithContentsOfFile:encoding:error: (From: Paul Johnson <email@hidden>)
 >Re: Warning message using stringWithContentsOfFile:encoding:error: (From: Nick Zitzmann <email@hidden>)
 >Re: Warning message using stringWithContentsOfFile:encoding:error: (From: Paul Johnson <email@hidden>)
 >Re: Warning message using stringWithContentsOfFile:encoding:error: (From: "Gary L. Wade" <email@hidden>)
 >Re: Warning message using stringWithContentsOfFile:encoding:error: (From: Paul Johnson <email@hidden>)
 >Re: Warning message using stringWithContentsOfFile:encoding:error: (From: Kyle Sluder <email@hidden>)
 >Re: Warning message using stringWithContentsOfFile:encoding:error: (From: Quincey Morris <email@hidden>)

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