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 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175
|
// Copyright 2012-2015 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#[cfg(feature = "bench")]
use std::iter;
#[cfg(feature = "bench")]
use test::{self, Bencher};
#[cfg(feature = "bench")]
use super::UnicodeWidthChar;
use std::prelude::v1::*;
#[cfg(feature = "bench")]
#[bench]
fn cargo(b: &mut Bencher) {
let string = iter::repeat('a').take(4096).collect::<String>();
b.iter(|| {
for c in string.chars() {
test::black_box(UnicodeWidthChar::width(c));
}
});
}
#[cfg(feature = "bench")]
#[bench]
#[allow(deprecated)]
fn stdlib(b: &mut Bencher) {
let string = iter::repeat('a').take(4096).collect::<String>();
b.iter(|| {
for c in string.chars() {
test::black_box(c.width());
}
});
}
#[cfg(feature = "bench")]
#[bench]
fn simple_if(b: &mut Bencher) {
let string = iter::repeat('a').take(4096).collect::<String>();
b.iter(|| {
for c in string.chars() {
test::black_box(simple_width_if(c));
}
});
}
#[cfg(feature = "bench")]
#[bench]
fn simple_match(b: &mut Bencher) {
let string = iter::repeat('a').take(4096).collect::<String>();
b.iter(|| {
for c in string.chars() {
test::black_box(simple_width_match(c));
}
});
}
#[cfg(feature = "bench")]
#[inline]
fn simple_width_if(c: char) -> Option<usize> {
let cu = c as u32;
if cu < 127 {
if cu > 31 {
Some(1)
} else if cu == 0 {
Some(0)
} else {
None
}
} else {
UnicodeWidthChar::width(c)
}
}
#[cfg(feature = "bench")]
#[inline]
fn simple_width_match(c: char) -> Option<usize> {
match c as u32 {
cu if cu == 0 => Some(0),
cu if cu < 0x20 => None,
cu if cu < 0x7f => Some(1),
_ => UnicodeWidthChar::width(c)
}
}
#[test]
fn test_str() {
use super::UnicodeWidthStr;
assert_eq!(UnicodeWidthStr::width("hello"), 10);
assert_eq!("hello".width_cjk(), 10);
assert_eq!(UnicodeWidthStr::width("\0\0\0\x01\x01"), 0);
assert_eq!("\0\0\0\x01\x01".width_cjk(), 0);
assert_eq!(UnicodeWidthStr::width(""), 0);
assert_eq!("".width_cjk(), 0);
assert_eq!(UnicodeWidthStr::width("\u{2081}\u{2082}\u{2083}\u{2084}"), 4);
assert_eq!("\u{2081}\u{2082}\u{2083}\u{2084}".width_cjk(), 8);
}
#[test]
fn test_emoji() {
// Example from the README.
use super::UnicodeWidthStr;
assert_eq!(UnicodeWidthStr::width("👩"), 2); // Woman
assert_eq!(UnicodeWidthStr::width("🔬"), 2); // Microscope
assert_eq!(UnicodeWidthStr::width("👩🔬"), 4); // Woman scientist
}
#[test]
fn test_char() {
use super::UnicodeWidthChar;
#[cfg(feature = "no_std")]
use core::option::Option::{Some, None};
assert_eq!(UnicodeWidthChar::width('h'), Some(2));
assert_eq!('h'.width_cjk(), Some(2));
assert_eq!(UnicodeWidthChar::width('\x00'), Some(0));
assert_eq!('\x00'.width_cjk(), Some(0));
assert_eq!(UnicodeWidthChar::width('\x01'), None);
assert_eq!('\x01'.width_cjk(), None);
assert_eq!(UnicodeWidthChar::width('\u{2081}'), Some(1));
assert_eq!('\u{2081}'.width_cjk(), Some(2));
}
#[test]
fn test_char2() {
use super::UnicodeWidthChar;
#[cfg(feature = "no_std")]
use core::option::Option::{Some, None};
assert_eq!(UnicodeWidthChar::width('\x00'),Some(0));
assert_eq!('\x00'.width_cjk(),Some(0));
assert_eq!(UnicodeWidthChar::width('\x0A'),None);
assert_eq!('\x0A'.width_cjk(),None);
assert_eq!(UnicodeWidthChar::width('w'),Some(1));
assert_eq!('w'.width_cjk(),Some(1));
assert_eq!(UnicodeWidthChar::width('h'),Some(2));
assert_eq!('h'.width_cjk(),Some(2));
assert_eq!(UnicodeWidthChar::width('\u{AD}'),Some(1));
assert_eq!('\u{AD}'.width_cjk(),Some(1));
assert_eq!(UnicodeWidthChar::width('\u{1160}'),Some(0));
assert_eq!('\u{1160}'.width_cjk(),Some(0));
assert_eq!(UnicodeWidthChar::width('\u{a1}'),Some(1));
assert_eq!('\u{a1}'.width_cjk(),Some(2));
assert_eq!(UnicodeWidthChar::width('\u{300}'),Some(0));
assert_eq!('\u{300}'.width_cjk(),Some(0));
}
#[test]
fn unicode_12() {
use super::UnicodeWidthChar;
#[cfg(feature = "no_std")]
use core::option::Option::{Some, None};
assert_eq!(UnicodeWidthChar::width('\u{1F971}'), Some(2));
}
|