1 /*
2 * Copyright © 2019 Facebook, Inc.
3 *
4 * This is part of HarfBuzz, a text shaping library.
5 *
6 * Permission is hereby granted, without written agreement and without
7 * license or royalty fees, to use, copy, modify, and distribute this
8 * software and its documentation for any purpose, provided that the
9 * above copyright notice and the following two paragraphs appear in
10 * all copies of this software.
11 *
12 * IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
13 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
14 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
15 * IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
16 * DAMAGE.
17 *
18 * THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
19 * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
20 * FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
21 * ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
22 * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
23 *
24 * Facebook Author(s): Behdad Esfahbod
25 */
26
27 #include "hb.hh"
28 #include "hb-algs.hh"
29
30
31 static char *
test_func(int a,char ** b)32 test_func (int a, char **b)
33 {
34 return b ? b[a] : nullptr;
35 }
36
37 struct A
38 {
aA39 void a () {}
40 };
41
42 int
main(int argc,char ** argv)43 main (int argc, char **argv)
44 {
45 int i = 1;
46 auto p = hb_pair (1, i);
47
48 p.second = 2;
49 assert (i == 2);
50
51 const int c = 3;
52 auto pc = hb_pair (1, c);
53 assert (pc.second == 3);
54
55 auto q = p;
56 assert (&q != &p);
57 q.second = 4;
58 assert (i == 4);
59
60 hb_invoke (test_func, 0, nullptr);
61
62 A a;
63 hb_invoke (&A::a, a);
64
65 assert (1 == hb_min (8, 1));
66 assert (8 == hb_max (8, 1));
67
68 int x = 1, y = 2;
69 hb_min (x, 3);
70 hb_min (3, x);
71 hb_min (x, 4 + 3);
72 int &z = hb_min (x, y);
73 z = 3;
74 assert (x == 3);
75
76 hb_pair_t<const int*, int> xp = hb_pair_t<int *, long> (nullptr, 0);
77 xp = hb_pair_t<int *, double> (nullptr, 1);
78 xp = hb_pair_t<const int*, int> (nullptr, 1);
79
80 assert (3 == hb_partial (hb_min, 3) (4));
81 assert (3 == hb_partial<1> (hb_min, 4) (3));
82
83 auto M0 = hb_partial<2> (hb_max, 0);
84 assert (M0 (-2) == 0);
85 assert (M0 (+2) == 2);
86
87 assert (hb_add (2) (5) == 7);
88 assert (hb_add (5) (2) == 7);
89
90 x = 1;
91 assert (++hb_inc (x) == 3);
92 assert (x == 3);
93
94 return 0;
95 }
96