~mdw / mLib / blame
| Commit | Line | Data |
|---|---|---|
| e6591bec MW |
1 | /* -*-c-*- |
| 2 | * | |
| 3 | * Test the control-flow metaprogramming macros | |
| 4 | * | |
| 5 | * (c) 2022 Straylight/Edgeware | |
| 6 | */ | |
| 7 | ||
| 8 | /*----- Licensing notice --------------------------------------------------* | |
| 9 | * | |
| 10 | * This file is part of the mLib utilities library. | |
| 11 | * | |
| 12 | * mLib is free software: you can redistribute it and/or modify it under | |
| 13 | * the terms of the GNU Library General Public License as published by | |
| 14 | * the Free Software Foundation; either version 2 of the License, or (at | |
| 15 | * your option) any later version. | |
| 16 | * | |
| 17 | * mLib is distributed in the hope that it will be useful, but WITHOUT | |
| 18 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 19 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public | |
| 20 | * License for more details. | |
| 21 | * | |
| 22 | * You should have received a copy of the GNU Library General Public | |
| 23 | * License along with mLib. If not, write to the Free Software | |
| 24 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, | |
| 25 | * USA. | |
| 26 | */ | |
| 27 | ||
| 28 | /*----- Header files ------------------------------------------------------*/ | |
| 29 | ||
| 30 | #include <stdio.h> | |
| 31 | #include <stdlib.h> | |
| 32 | ||
| 33 | #include "control.h" | |
| 34 | ||
| 35 | /*----- Main code ---------------------------------------------------------*/ | |
| 36 | ||
| 37 | static int step = 0; | |
| 38 | static int rc = 0; | |
| 39 | ||
| 40 | #define STEP(s) check_step(s, __FILE__ ": " STR(__LINE__)) | |
| 41 | #define MISSTEP STEP(-1) | |
| 42 | static void check_step(int s, const char *where) | |
| 43 | { | |
| 44 | if (step != s) { | |
| 45 | fprintf(stderr, "misstep at %s: expected %d but found %d\n", | |
| 46 | where, step, s); | |
| 47 | rc = 2; | |
| 48 | } | |
| 49 | step++; | |
| 50 | } | |
| 51 | ||
| 52 | #define LASTSTEP(s) laststep(s, __FILE__ ": " STR(__LINE__)) | |
| 53 | static void laststep(int s, const char *where) | |
| 54 | { check_step(s, where); step = 0; } | |
| 55 | ||
| 56 | #define FOR_FIZZBUZZ(var, base, limit) \ | |
| 57 | FIRSTBRANCH(fizzbuzz0) GOBRANCH(fizzbuzz2); \ | |
| 58 | MIDBRANCH(fizzbuzz1) ; \ | |
| 59 | LASTBRANCH(fizzbuzz2) \ | |
| 60 | DECL(fizzbuzz3, int _i = base COMMA _limit = limit) \ | |
| 61 | for (; _i < _limit; _i++) \ | |
| 62 | DECL(fizzbuzz4, char _buf[24]) \ | |
| 63 | DECL(fizzbuzz5, const char *var) \ | |
| 65135ebd MW |
64 | WRAP(fizzbuzz6, { \ |
| 65 | switch (_i%15) { \ | |
| 66 | case 0: var = "fizzbuzz"; break; \ | |
| 67 | case 3: case 6: case 9: case 12: var = "fizz"; break; \ | |
| 68 | case 5: case 10: var = "buzz"; break; \ | |
| 69 | default: sprintf(_buf, "%d", _i); var = _buf; break; \ | |
| 70 | } \ | |
| 71 | }, \ | |
| 72 | { ; }, \ | |
| 73 | { GOBRANCH(fizzbuzz1); }) | |
| e6591bec MW |
74 | |
| 75 | int main(void) | |
| 76 | { | |
| 65135ebd MW |
77 | BEFORE(before0, { STEP(0); }) STEP(1); |
| 78 | AFTER(after0, { STEP(3); }) STEP(2); | |
| e6591bec MW |
79 | LASTSTEP(4); |
| 80 | ||
| 81 | WRAP(wrap0, { STEP(0); }, { STEP(2); }, { MISSTEP; }) STEP(1); | |
| 82 | WRAP(wrap1, { STEP(3); }, { MISSTEP; }, { STEP(5); }) { STEP(4); break; } | |
| 83 | LASTSTEP(6); | |
| 84 | ||
| 85 | STEP(0); | |
| 55d45d31 MW |
86 | for (;;) { |
| 87 | AFTER(after1, { STEP(2); break; }) STEP(1); | |
| 88 | MISSTEP; break; | |
| 89 | } | |
| 90 | LASTSTEP(3); | |
| 91 | ||
| 92 | STEP(0); | |
| e6591bec MW |
93 | DECL(decl0, int i = 1) STEP(i); |
| 94 | LASTSTEP(2); | |
| 95 | ||
| 55d45d31 | 96 | FOR_FIZZBUZZ(fb, 19, 32) printf("%s\n", fb); |
| e6591bec MW |
97 | |
| 98 | return (rc); | |
| 99 | } | |
| 100 | ||
| 101 | /*----- That's all, folks -------------------------------------------------*/ |