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Snippet GUID variation

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[quote][i]Originally posted by mwalshe[/i]
[br]I'd like to use a code snippet to generate a uniqiue guard value for my C++ header files. I'm trying to use a GUID along with the filename to ensure I get a unique name:

e.g.

#if !defined(_Engine_H_C0F2B6DC_339B_4F1E_877D_A6DAB91FD296_INCLUDED_)
#define _Engine_H_C0F2B6DC_339B_4F1E_877D_A6DAB91FD296_INCLUDED_

#endif // _Engine_H_C0F2B6DC_339B_4F1E_877D_A6DAB91FD296_INCLUDED_)

so the kind of snippet I would define is as follows

#ifndef _$FILE_BASE$_H_$GUID_STRING$_INCLUDED_
#define _$FILE_BASE$_H_$GUID_STRING$_INCLUDED_

#endif // _$FILE_BASE$_H_$GUID_STRING$_INCLUDED_

My problem is that whilst the substiution that $GUID_STRING$ makes is close to what I'm after it separates the guid elements with '-' character which the preprocessor rejects with an 'unexpected tokens' error. Would it be possible to add an extra $GUID_$ code that separates the guid elements with a character that is acceptable to the C++ preprocessor, e.g. '_'?

Great product. Can't use Visual Studio without it.

Thanks

Max

[/quote]

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T O P I C R E V I E W
mwalshe	Posted - Oct 21 2010 : 05:40:23 AM I'd like to use a code snippet to generate a uniqiue guard value for my C++ header files. I'm trying to use a GUID along with the filename to ensure I get a unique name: e.g. #if !defined(_Engine_H_C0F2B6DC_339B_4F1E_877D_A6DAB91FD296_INCLUDED_) #define _Engine_H_C0F2B6DC_339B_4F1E_877D_A6DAB91FD296_INCLUDED_ #endif // _Engine_H_C0F2B6DC_339B_4F1E_877D_A6DAB91FD296_INCLUDED_) so the kind of snippet I would define is as follows #ifndef _$FILE_BASE$_H_$GUID_STRING$_INCLUDED_ #define _$FILE_BASE$_H_$GUID_STRING$_INCLUDED_ #endif // _$FILE_BASE$_H_$GUID_STRING$_INCLUDED_ My problem is that whilst the substiution that $GUID_STRING$ makes is close to what I'm after it separates the guid elements with '-' character which the preprocessor rejects with an 'unexpected tokens' error. Would it be possible to add an extra $GUID_$ code that separates the guid elements with a character that is acceptable to the C++ preprocessor, e.g. '_'? Great product. Can't use Visual Studio without it. Thanks Max
5 L A T E S T R E P L I E S (Newest First)
accord	Posted - Oct 29 2010 : 03:08:27 AM #pragma once is not standard but a lot of compilers support it, e.g. Intel compiler and GCC
GKarRacer	Posted - Oct 28 2010 : 4:18:11 PM Alternatively use #pragma once and then you never need the #ifdef guard blocks around the entire header ever again, except, of course, if you need cross-platform support with a compiler (other than VS) that doesn't support the #pragma once directive.
holedigger	Posted - Oct 22 2010 : 5:10:02 PM Yes, $SECOND$ will be constant within a snippet. The system time is queried once, and all instances of $SECOND$, $MINUTE$, etc, are updated with their respective values.
mwalshe	Posted - Oct 22 2010 : 10:22:21 AM Indeed, an alternative that I had not considered. The benefit of the $GUID_xxx$ approach is that I can ensure it's consist throught the snippet. Would $SECOND$ for example remain consistent from start to end? If it is evaluated on demand then there is the possibilty that it could be different towards the end of the snippet.
accord	Posted - Oct 21 2010 : 2:40:54 PM What about _$FILE_BASE$_H_$YEAR$_$MONTH$_$DAY$_$HOUR$_$MINUTE$_$SECOND$ it produces something like this: _someheader_H_2010_10_21_20_38_34 quite unique, isn't it?

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