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 Odd behavior in macro expansion
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dparker
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8 Posts

Posted - Jan 19 2006 :  4:19:24 PM  Show Profile  Reply with Quote
Ok, so who's so lazy they use macros to generate code?
That aside, I saw that in some code having the following #define, what showed up in the definition box when CASE_DRIVER(XX) was expanded had the ":" and "." replaced with "::".

#define CASE_DRIVER(ID) case driver##ID: sendStatus = driver_##ID.Update (packet.msg, &sendPacket); break;

Nothing fatal or earth shaking. Just figured it's not supposed to be that way.

feline
Whole Tomato Software

United Kingdom
18079 Posts

Posted - Jan 19 2006 :  4:39:55 PM  Show Profile  Reply with Quote
i am seeing the same thing on some of the dots.

case=897

out of interest should those #'s be there? or are they just place holders? i try not to use macro's to much, but the hashes look like they wont compile, and i don't recall reading anything about them being control characters in a macro.

zen is the art of being at one with the two'ness
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dparker
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8 Posts

Posted - Jan 19 2006 :  10:39:05 PM  Show Profile  Reply with Quote
The ## is the Token-Pasting Operator (##)
Sometimes old code has old practices.
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feline
Whole Tomato Software

United Kingdom
18079 Posts

Posted - Jan 22 2006 :  2:15:52 PM  Show Profile  Reply with Quote
that makes sense

zen is the art of being at one with the two'ness
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dparker
New Member

8 Posts

Posted - Jan 30 2006 :  2:12:10 PM  Show Profile  Reply with Quote
This "problem" didn't occur in build 1418. Might be the same as case 923.
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feline
Whole Tomato Software

United Kingdom
18079 Posts

Posted - Jan 30 2006 :  3:02:34 PM  Show Profile  Reply with Quote
good catch. case 897 has in fact been replaced by the duplicate case 932

zen is the art of being at one with the two'ness
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dparker
New Member

8 Posts

Posted - Feb 01 2006 :  5:11:02 PM  Show Profile  Reply with Quote
Just for testing purposes -
this line :
static const double VoltsPerBit = 10.0 / (double)0x0fff;
is shown in the definition box as :
static const double VoltsPerBit = 10::0 (double)0x0fff;

The tooltip is even stranger.
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