projects / wxWidgets.git / blame
| Commit | Line | Data |
|---|---|---|
| cdd8d745 VZ |
1 | /* |
| 2 | * Name: wx/cpp.h | |
| 3 | * Purpose: Various preprocessor helpers | |
| 4 | * Author: Vadim Zeitlin | |
| 5 | * Created: 2006-09-30 | |
| 6 | * RCS-ID: $Id$ | |
| 7 | * Copyright: (c) 2006 Vadim Zeitlin <vadim@wxwindows.org> | |
| 8 | * Licence: wxWindows licence | |
| 9 | */ | |
| 10 | ||
| 11 | /* THIS IS A C FILE, DON'T USE C++ FEATURES (IN PARTICULAR COMMENTS) IN IT */ | |
| 12 | ||
| 13 | #ifndef _WX_CPP_H_ | |
| 14 | #define _WX_CPP_H_ | |
| 15 | ||
| 16 | /* wxCONCAT works like preprocessor ## operator but also works with macros */ | |
| 17 | #define wxCONCAT_HELPER(text, line) text ## line | |
| 18 | #define wxCONCAT(text, line) wxCONCAT_HELPER(text, line) | |
| 19 | ||
| 20 | /* wxSTRINGIZE works as the preprocessor # operator but also works with macros */ | |
| 21 | #define wxSTRINGIZE_HELPER(x) #x | |
| 22 | #define wxSTRINGIZE(x) wxSTRINGIZE_HELPER(x) | |
| 23 | ||
| 84206bbb VZ |
24 | /* a Unicode-friendly version of wxSTRINGIZE_T */ |
| 25 | #define wxSTRINGIZE_T(x) wxAPPLY_T(wxSTRINGIZE(x)) | |
| 26 | ||
| cdd8d745 VZ |
27 | /* |
| 28 | Helper macros for wxMAKE_UNIQUE_NAME: normally this works by appending the | |
| 29 | current line number to the given identifier to reduce the probability of the | |
| 30 | conflict (it may still happen if this is used in the headers, hence you | |
| 31 | should avoid doing it or provide unique prefixes then) but we have to do it | |
| 32 | differently for VC++ | |
| 33 | */ | |
| 34 | #if defined(__VISUALC__) && (__VISUALC__ >= 1300) | |
| 35 | /* | |
| 36 | __LINE__ handling is completely broken in VC++ when using "Edit and | |
| 37 | Continue" (/ZI option) and results in preprocessor errors if we use it | |
| 38 | inside the macros. Luckily VC7 has another standard macro which can be | |
| 39 | used like this and is even better than __LINE__ because it is globally | |
| 40 | unique. | |
| 41 | */ | |
| 42 | # define wxCONCAT_LINE(text) wxCONCAT(text, __COUNTER__) | |
| 43 | #else /* normal compilers */ | |
| 44 | # define wxCONCAT_LINE(text) wxCONCAT(text, __LINE__) | |
| 45 | #endif | |
| 46 | ||
| 47 | /* Create a "unique" name with the given prefix */ | |
| 48 | #define wxMAKE_UNIQUE_NAME(text) wxCONCAT_LINE(text) | |
| 49 | ||
| bde626ce VZ |
50 | /* |
| 51 | This macro can be passed as argument to another macro when you don't have | |
| 52 | anything to pass in fact. | |
| 53 | */ | |
| 54 | #define wxEMPTY_PARAMETER_VALUE /* Fake macro parameter value */ | |
| 55 | ||
| 28efe654 | 56 | #endif /* _WX_CPP_H_ */ |
| cdd8d745 | 57 |