| 1 | // ========================================================= // |
|---|
| 2 | // // |
|---|
| 3 | // File : stringize.h // |
|---|
| 4 | // Purpose : stringize et.al. // |
|---|
| 5 | // // |
|---|
| 6 | // Coded by Ralf Westram (coder@reallysoft.de) in Jan 22 // |
|---|
| 7 | // http://www.arb-home.de/ // |
|---|
| 8 | // // |
|---|
| 9 | // ========================================================= // |
|---|
| 10 | |
|---|
| 11 | #ifndef STRINGIZE_H |
|---|
| 12 | #define STRINGIZE_H |
|---|
| 13 | |
|---|
| 14 | // see also: https://gcc.gnu.org/onlinedocs/cpp/Stringizing.html |
|---|
| 15 | // https://gcc.gnu.org/onlinedocs/cpp/Argument-Prescan.html |
|---|
| 16 | // |
|---|
| 17 | // unittests are available in ../SL/HEADERTESTS/tiny.cxx@TEST_stringize |
|---|
| 18 | |
|---|
| 19 | // -------------------------------------------------------------------------------- |
|---|
| 20 | // convert an ID or its prescanned value into a string |
|---|
| 21 | // |
|---|
| 22 | // #define VALUE 7 |
|---|
| 23 | // stringize(VALUE) -> "VALUE" |
|---|
| 24 | // stringize_pscan(VALUE) -> "7" |
|---|
| 25 | // |
|---|
| 26 | // Note: if VALUE is not defined -> stringize_pscan() results in "VALUE"! |
|---|
| 27 | |
|---|
| 28 | // unittests are available in ../SL/HEADERTESTS/tiny.cxx@TEST_stringize |
|---|
| 29 | |
|---|
| 30 | #define stringize(s) #s |
|---|
| 31 | #define stringize_pscan(s) stringize(s) |
|---|
| 32 | |
|---|
| 33 | |
|---|
| 34 | // -------------------------------------------------------------------------------- |
|---|
| 35 | // concatenate IDs |
|---|
| 36 | // |
|---|
| 37 | // #define PREFIX pre_ |
|---|
| 38 | // #define SUFFIX suf |
|---|
| 39 | // concatenate(PREFIX,SUFFIX) -> PREFIXSUFFIX |
|---|
| 40 | // stringize_pscan(concatenate(PREFIX,SUFFIX)) -> "PREFIXSUFFIX" |
|---|
| 41 | // concatenate_pscans(PREFIX,SUFFIX) -> pre_suf |
|---|
| 42 | |
|---|
| 43 | #define concatenate(a,b) a##b |
|---|
| 44 | #define concatenate_pscans(a,b) concatenate(a,b) |
|---|
| 45 | |
|---|
| 46 | |
|---|
| 47 | #else |
|---|
| 48 | #error stringize.h included twice |
|---|
| 49 | #endif // STRINGIZE_H |
|---|
| 50 | |
|---|
