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1 | // Copyright (C) 2020 Free Software Foundation, Inc. |
2 | // | |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
18 | // { dg-options "-std=gnu++2a" } | |
19 | // { dg-do run { target c++2a } } | |
20 | ||
21 | #include <algorithm> | |
22 | #include <testsuite_hooks.h> | |
23 | #include <testsuite_iterators.h> | |
24 | ||
25 | using __gnu_test::test_container; | |
26 | using __gnu_test::test_range; | |
27 | using __gnu_test::input_iterator_wrapper; | |
28 | using __gnu_test::output_iterator_wrapper; | |
29 | using __gnu_test::forward_iterator_wrapper; | |
30 | ||
31 | namespace ranges = std::ranges; | |
32 | ||
33 | struct X { int i; }; | |
34 | ||
35 | void | |
36 | test01() | |
37 | { | |
38 | { | |
39 | int x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
40 | int y[6] = { {3}, {5}, {7}, {9}, {11}, {12} }; | |
41 | auto [in, out] = ranges::transform(x, x, [] (int a) { return a+1; }); | |
42 | VERIFY( in == x+6 && out == x+6 ); | |
43 | VERIFY( ranges::equal(x, y) ); | |
44 | } | |
45 | ||
46 | { | |
47 | X x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
48 | int y[7] = { {3}, {5}, {7}, {9}, {11}, {12}, {0} }; | |
49 | int z[7] = { {0}, {0}, {0}, {0}, {0}, {0}, {0} }; | |
50 | test_container<X, forward_iterator_wrapper> cx(x); | |
51 | test_container<int, forward_iterator_wrapper> cy(y), cz(z); | |
52 | auto [in, out] | |
53 | = ranges::transform(cx, cz.begin(), [] (int a) { return a+1; }, &X::i); | |
54 | VERIFY( ranges::equal(cy, cz) ); | |
55 | VERIFY( in == cx.end() && ++out == cz.end() ); | |
56 | } | |
57 | ||
58 | { | |
59 | X x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
60 | X y[7] = { {3}, {5}, {7}, {9}, {11}, {12}, {0} }; | |
61 | int z[7] = { {0}, {0}, {0}, {0}, {0}, {0}, {0} }; | |
62 | test_range<X, input_iterator_wrapper> rx(x), ry(y); | |
63 | test_range<int, output_iterator_wrapper> rz(z); | |
64 | auto [in, out] | |
65 | = ranges::transform(rx, rz.begin(), [] (int a) { return a+1; }, &X::i); | |
66 | VERIFY( ranges::equal(ry, z, {}, &X::i) ); | |
67 | VERIFY( in == rx.end() && out.ptr == z+6 ); | |
68 | } | |
69 | } | |
70 | ||
71 | struct Y { int i; int j; }; | |
72 | ||
73 | constexpr bool | |
74 | test02() | |
75 | { | |
76 | int x[] = { 1, 2, 3 }; | |
77 | Y y[] = { {1,2}, {2,4}, {3,6} }; | |
78 | ranges::transform(y, y+3, x, [] (int a) { return -a; }, &Y::i); | |
79 | return x[0] == -1 && x[1] == -2 && x[2] == -3; | |
80 | } | |
81 | ||
82 | void | |
83 | test03() | |
84 | { | |
85 | { | |
86 | int x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
87 | const int y[6] = { {3}, {5}, {7}, {9}, {11}, {12} }; | |
88 | int z[6] = { {5}, {9}, {13}, {17}, {21}, {23} }; | |
89 | auto [in1, in2, out] = ranges::transform(x, y, x, std::plus<>{}); | |
90 | VERIFY( in1 == x+6 && in2 == y+6 && out == x+6 ); | |
91 | VERIFY( ranges::equal(x, z) ); | |
92 | } | |
93 | ||
94 | { | |
95 | int x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
96 | const int y[6] = { {3}, {5}, {7}, {9}, {11}, {12} }; | |
97 | int z[6] = { {5}, {9}, {13}, {17}, {21}, {23} }; | |
98 | auto [in1, in2, out] = ranges::transform(y, x, x, std::plus<>{}); | |
99 | VERIFY( in1 == y+6 && in2 == x+6 && out == x+6 ); | |
100 | VERIFY( ranges::equal(x, z) ); | |
101 | } | |
102 | ||
103 | { | |
104 | X x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
105 | int y[7] = { {3}, {5}, {7}, {9}, {11}, {12}, {0} }; | |
106 | int z[6] = { {5}, {9}, {13}, {17}, {21}, {23} }; | |
107 | int w[6]; | |
108 | test_container<X, forward_iterator_wrapper> cx(x); | |
109 | test_container<int, forward_iterator_wrapper> cy(y), cz(z), cw(w); | |
110 | auto [in1, in2, out] | |
111 | = ranges::transform(cx, cy, cw.begin(), std::plus<>{}, &X::i); | |
112 | VERIFY( in1 == cx.end() && ++in2 == cy.end() && out == cw.end() ); | |
113 | VERIFY( ranges::equal(cw, cz) ); | |
114 | } | |
115 | ||
116 | { | |
117 | X x[6] = { {2}, {4}, {6}, {8}, {10}, {11} }; | |
118 | int y[7] = { {3}, {5}, {7}, {9}, {11}, {12}, {0} }; | |
119 | int z[6] = { {5}, {9}, {13}, {17}, {21}, {23} }; | |
120 | int w[6]; | |
121 | test_range<X, input_iterator_wrapper> rx(x); | |
122 | test_range<int, input_iterator_wrapper> ry(y), rz(z); | |
123 | test_range<int, output_iterator_wrapper> rw(w); | |
124 | auto [in1, in2, out] | |
125 | = ranges::transform(rx, ry, rw.begin(), std::plus<>{}, &X::i); | |
126 | VERIFY( in1 == rx.end() && ++in2 == ry.end() && out.ptr == w+6 ); | |
127 | VERIFY( ranges::equal(w, rz) ); | |
128 | } | |
129 | } | |
130 | ||
131 | constexpr bool | |
132 | test04() | |
133 | { | |
134 | int x[3]; | |
135 | const Y y[3] = { {1,2}, {2,4}, {3,6} }; | |
136 | ranges::transform(y, y+3, y, y+3, x, std::plus<>{}, &Y::i, &Y::j); | |
137 | return x[0] == 3 && x[1] == 6 && x[2] == 9; | |
138 | } | |
139 | ||
140 | int | |
141 | main() | |
142 | { | |
143 | test01(); | |
144 | static_assert(test02()); | |
145 | test03(); | |
146 | static_assert(test04()); | |
147 | } | |
148 |