1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
13 #![allow(unsigned_negate)]
15 macro_rules! uint_module (($T:ty) => (
17 // String conversion functions and impl str -> num
19 /// Parse a byte slice as a number in the given base
21 /// Yields an `Option` because `buf` may or may not actually be parseable.
26 /// let num = std::uint::parse_bytes([49,50,51,52,53,54,55,56,57], 10);
27 /// assert!(num == Some(123456789));
30 pub fn parse_bytes(buf: &[u8], radix: uint) -> Option<$T> {
31 strconv::from_str_bytes_common(buf, radix, false, false, false,
32 strconv::ExpNone, false, false)
37 fn from_str(s: &str) -> Option<$T> {
38 strconv::from_str_common(s, 10u, false, false, false,
39 strconv::ExpNone, false, false)
43 impl FromStrRadix for $T {
45 fn from_str_radix(s: &str, radix: uint) -> Option<$T> {
46 strconv::from_str_common(s, radix, false, false, false,
47 strconv::ExpNone, false, false)
51 // String conversion functions and impl num -> str
53 /// Convert to a string as a byte slice in a given base.
55 /// Use in place of x.to_str() when you do not need to store the string permanently
60 /// std::uint::to_str_bytes(123, 10, |v| {
61 /// assert!(v == "123".as_bytes());
65 pub fn to_str_bytes<U>(n: $T, radix: uint, f: |v: &[u8]| -> U) -> U {
66 use io::{Writer, Seek};
67 // The radix can be as low as 2, so we need at least 64 characters for a
68 // base 2 number, and then we need another for a possible '-' character.
69 let mut buf = [0u8, ..65];
71 let mut wr = ::io::BufWriter::new(buf);
72 (write!(&mut wr, "{}", ::fmt::radix(n, radix as u8))).unwrap();
73 wr.tell().unwrap() as uint
78 impl ToStrRadix for $T {
79 /// Convert to a string in a given base.
81 fn to_str_radix(&self, radix: uint) -> String {
82 format_strbuf!("{}", ::fmt::radix(*self, radix as u8))
96 pub fn test_to_str() {
97 assert_eq!((0 as $T).to_str_radix(10u), "0".to_string());
98 assert_eq!((1 as $T).to_str_radix(10u), "1".to_string());
99 assert_eq!((2 as $T).to_str_radix(10u), "2".to_string());
100 assert_eq!((11 as $T).to_str_radix(10u), "11".to_string());
101 assert_eq!((11 as $T).to_str_radix(16u), "b".to_string());
102 assert_eq!((255 as $T).to_str_radix(16u), "ff".to_string());
103 assert_eq!((0xff as $T).to_str_radix(10u), "255".to_string());
107 pub fn test_from_str() {
108 assert_eq!(from_str::<$T>("0"), Some(0u as $T));
109 assert_eq!(from_str::<$T>("3"), Some(3u as $T));
110 assert_eq!(from_str::<$T>("10"), Some(10u as $T));
111 assert_eq!(from_str::<u32>("123456789"), Some(123456789 as u32));
112 assert_eq!(from_str::<$T>("00100"), Some(100u as $T));
114 assert!(from_str::<$T>("").is_none());
115 assert!(from_str::<$T>(" ").is_none());
116 assert!(from_str::<$T>("x").is_none());
120 pub fn test_parse_bytes() {
122 assert_eq!(parse_bytes("123".as_bytes(), 10u), Some(123u as $T));
123 assert_eq!(parse_bytes("1001".as_bytes(), 2u), Some(9u as $T));
124 assert_eq!(parse_bytes("123".as_bytes(), 8u), Some(83u as $T));
125 assert_eq!(u16::parse_bytes("123".as_bytes(), 16u), Some(291u as u16));
126 assert_eq!(u16::parse_bytes("ffff".as_bytes(), 16u), Some(65535u as u16));
127 assert_eq!(parse_bytes("z".as_bytes(), 36u), Some(35u as $T));
129 assert!(parse_bytes("Z".as_bytes(), 10u).is_none());
130 assert!(parse_bytes("_".as_bytes(), 2u).is_none());
134 fn test_uint_to_str_overflow() {
135 let mut u8_val: u8 = 255_u8;
136 assert_eq!(u8_val.to_str(), "255".to_string());
139 assert_eq!(u8_val.to_str(), "0".to_string());
141 let mut u16_val: u16 = 65_535_u16;
142 assert_eq!(u16_val.to_str(), "65535".to_string());
145 assert_eq!(u16_val.to_str(), "0".to_string());
147 let mut u32_val: u32 = 4_294_967_295_u32;
148 assert_eq!(u32_val.to_str(), "4294967295".to_string());
151 assert_eq!(u32_val.to_str(), "0".to_string());
153 let mut u64_val: u64 = 18_446_744_073_709_551_615_u64;
154 assert_eq!(u64_val.to_str(), "18446744073709551615".to_string());
157 assert_eq!(u64_val.to_str(), "0".to_string());
161 fn test_uint_from_str_overflow() {
162 let mut u8_val: u8 = 255_u8;
163 assert_eq!(from_str::<u8>("255"), Some(u8_val));
164 assert!(from_str::<u8>("256").is_none());
167 assert_eq!(from_str::<u8>("0"), Some(u8_val));
168 assert!(from_str::<u8>("-1").is_none());
170 let mut u16_val: u16 = 65_535_u16;
171 assert_eq!(from_str::<u16>("65535"), Some(u16_val));
172 assert!(from_str::<u16>("65536").is_none());
175 assert_eq!(from_str::<u16>("0"), Some(u16_val));
176 assert!(from_str::<u16>("-1").is_none());
178 let mut u32_val: u32 = 4_294_967_295_u32;
179 assert_eq!(from_str::<u32>("4294967295"), Some(u32_val));
180 assert!(from_str::<u32>("4294967296").is_none());
183 assert_eq!(from_str::<u32>("0"), Some(u32_val));
184 assert!(from_str::<u32>("-1").is_none());
186 let mut u64_val: u64 = 18_446_744_073_709_551_615_u64;
187 assert_eq!(from_str::<u64>("18446744073709551615"), Some(u64_val));
188 assert!(from_str::<u64>("18446744073709551616").is_none());
191 assert_eq!(from_str::<u64>("0"), Some(u64_val));
192 assert!(from_str::<u64>("-1").is_none());
197 pub fn to_str_radix1() {
198 100u.to_str_radix(1u);
203 pub fn to_str_radix37() {
204 100u.to_str_radix(37u);