| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * Test program for the keyword-argument machinery |
| 4 | * |
| 5 | * (c) 2015 Straylight/Edgeware |
| 6 | */ |
| 7 | |
| 8 | /*----- Licensing notice --------------------------------------------------* |
| 9 | * |
| 10 | * This file is part of the Sensible Object Design, an object system for C. |
| 11 | * |
| 12 | * SOD is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * SOD is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with SOD; if not, write to the Free Software Foundation, |
| 24 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 25 | */ |
| 26 | |
| 27 | #include <setjmp.h> |
| 28 | #include <stdarg.h> |
| 29 | #include <stdlib.h> |
| 30 | #include <stdio.h> |
| 31 | |
| 32 | #include "keyword.h" |
| 33 | |
| 34 | static void show_kwval(const char *what, int f, const char *fmt, ...) |
| 35 | { |
| 36 | va_list ap; |
| 37 | |
| 38 | printf(" %s = ", what); |
| 39 | if (!f) |
| 40 | puts("<unset>"); |
| 41 | else { |
| 42 | va_start(ap, fmt); |
| 43 | vprintf(fmt, ap); |
| 44 | va_end(ap); |
| 45 | putchar('\n'); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | #define SHOW(mem, fmt) show_kwval(#mem, kw.mem##_suppliedp, fmt, kw.mem) |
| 50 | |
| 51 | #define t1_KWSET(_) \ |
| 52 | _(int, x, 0) \ |
| 53 | _(double, y, 69.0) \ |
| 54 | _(const char *, z, "default") |
| 55 | KWSET_STRUCT(t1); |
| 56 | static KWSET_PARSEFN(t1) |
| 57 | static KWCALL void t1(const char *what, KWTAIL) |
| 58 | { |
| 59 | KWPARSE(t1); |
| 60 | |
| 61 | printf("t1: %s\n", what); |
| 62 | SHOW(x, "%d"); |
| 63 | SHOW(y, "%g"); |
| 64 | SHOW(z, "`%s'"); |
| 65 | } |
| 66 | |
| 67 | static KWCALL void t2(const char *what, ...) |
| 68 | { |
| 69 | va_list ap; |
| 70 | |
| 71 | printf("t2: %s\n", what); |
| 72 | va_start(ap, what); |
| 73 | t1("via t2", KWARGS(K_VALIST(ap))); |
| 74 | va_end(ap); |
| 75 | } |
| 76 | |
| 77 | #define t3_KWSET(_) \ |
| 78 | _(int, q, 0) \ |
| 79 | t1_KWSET(_) |
| 80 | KWSET_STRUCT(t3); |
| 81 | static KWSET_PARSEFN(t3) |
| 82 | static KWCALL void t3(const char *what, KWTAIL) |
| 83 | { |
| 84 | struct kwval v[KW_COUNT(t1)]; |
| 85 | size_t n = 0; |
| 86 | KWPARSE(t3); |
| 87 | |
| 88 | printf("t3: %s\n", what); |
| 89 | SHOW(q, "%c"); |
| 90 | SHOW(z, "`%s'"); |
| 91 | |
| 92 | KW_COPY(t3, t1, kw, v, n); |
| 93 | t1("via t3", KWARGS(K_TAB(v, n) |
| 94 | K(x, kw.x_suppliedp ? kw.x + 1 : 42))); |
| 95 | } |
| 96 | |
| 97 | /* The @KW_TEST@ machinery from the manpage... */ |
| 98 | #define KWARGS_TEST(k, val) KWARGS(K(k, val) K(kw.unknown, 0)) |
| 99 | |
| 100 | static jmp_buf kw_test_jmp; |
| 101 | |
| 102 | static void kw_test_unknown(const char *set, const char *kw) |
| 103 | { |
| 104 | if (strcmp(kw, "kw.unknown") == 0) longjmp(kw_test_jmp, 1); |
| 105 | else longjmp(kw_test_jmp, 2); |
| 106 | } |
| 107 | |
| 108 | #define KW_TEST(flag, set, call) do { \ |
| 109 | kw_unkhookfn *oldunk = kw_unkhook; \ |
| 110 | kw_unkhook = kw_test_unknown; \ |
| 111 | switch (setjmp(kw_test_jmp)) { \ |
| 112 | case 0: call; abort(); \ |
| 113 | case 1: flag = 1; break; \ |
| 114 | case 2: flag = 0; break; \ |
| 115 | default: abort(); \ |
| 116 | } \ |
| 117 | kw_unkhook = oldunk; \ |
| 118 | } while (0) |
| 119 | /* END */ |
| 120 | |
| 121 | int main(void) |
| 122 | { |
| 123 | t1("no args", NO_KWARGS); |
| 124 | t1("some args", KWARGS(K(z, "set") K(x, 42))); |
| 125 | |
| 126 | t2("indirection", KWARGS(K(y, 6.283))); |
| 127 | |
| 128 | t3("no args", NO_KWARGS); |
| 129 | t3("x initially 19", KWARGS(K(q, 't') K(x, 19) K(z, "boing"))); |
| 130 | |
| 131 | #define TEST_KWTEST(kw, val) do { \ |
| 132 | int f_; \ |
| 133 | KW_TEST(f_, t3, t3(0, KWARGS_TEST(kw, val))); \ |
| 134 | printf("t3 arg `%s' %s\n", #kw, f_ ? "present" : "absent"); \ |
| 135 | } while (0) |
| 136 | TEST_KWTEST(q, '!'); |
| 137 | TEST_KWTEST(z, "splat"); |
| 138 | TEST_KWTEST(nope, 0); |
| 139 | |
| 140 | return (0); |
| 141 | } |
| 142 | |
| 143 | /*----- That's all, folks -------------------------------------------------*/ |