1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// SPDX-License-Identifier: MPL-2.0
// (c) Hare authors <https://harelang.org>
use bytes;
use encoding::utf8;
// Returns true if a string contains a rune or a sub-string, multiple of which
// can be given.
export fn contains(haystack: str, needles: (str | rune)...) bool = {
for (let needle .. needles) {
const matched = match (needle) {
case let s: str =>
yield bytes::contains(toutf8(haystack),
toutf8(s));
case let r: rune =>
yield bytes::contains(toutf8(haystack),
utf8::encoderune(r));
};
if (matched) {
return true;
};
};
return false;
};
@test fn contains() void = {
assert(contains("hello world", "hello"));
assert(contains("hello world", 'h'));
assert(!contains("hello world", 'x'));
assert(contains("hello world", "world"));
assert(contains("hello world", ""));
assert(!contains("hello world", "foobar"));
assert(contains("hello world", "foobar", "hello", "bar"));
assert(!contains("hello world", "foobar", "foo", "bar"));
assert(contains("hello world", 'h', "foo", "bar"));
assert(!contains("hello world", 'x', "foo", "bar"));
assert(!contains("hello world"));
};
|
