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.
14 #![allow(unsigned_negate)]
16 macro_rules! uint_module (($T:ty) => (
18 // String conversion functions and impl str -> num
20 /// Parse a byte slice as a number in the given base
22 /// Yields an `Option` because `buf` may or may not actually be parseable.
27 /// let num = std::uint::parse_bytes([49,50,51,52,53,54,55,56,57], 10);
28 /// assert!(num == Some(123456789));
31 #[experimental = "might need to return Result"]
32 pub fn parse_bytes(buf: &[u8], radix: uint) -> Option<$T> {
33 strconv::from_str_bytes_common(buf, radix, false, false, false,
34 strconv::ExpNone, false, false)
37 #[experimental = "might need to return Result"]
40 fn from_str(s: &str) -> Option<$T> {
41 strconv::from_str_common(s, 10u, false, false, false,
42 strconv::ExpNone, false, false)
46 #[experimental = "might need to return Result"]
47 impl FromStrRadix for $T {
49 fn from_str_radix(s: &str, radix: uint) -> Option<$T> {
50 strconv::from_str_common(s, radix, false, false, false,
51 strconv::ExpNone, false, false)
55 // String conversion functions and impl num -> str
57 /// Convert to a string as a byte slice in a given base.
59 /// Use in place of x.to_str() when you do not need to store the string permanently
64 /// #![allow(deprecated)]
66 /// std::uint::to_str_bytes(123, 10, |v| {
67 /// assert!(v == "123".as_bytes());
71 #[deprecated = "just use .to_string(), or a BufWriter with write! if you mustn't allocate"]
72 pub fn to_str_bytes<U>(n: $T, radix: uint, f: |v: &[u8]| -> U) -> U {
73 use io::{Writer, Seek};
74 // The radix can be as low as 2, so we need at least 64 characters for a
75 // base 2 number, and then we need another for a possible '-' character.
76 let mut buf = [0u8, ..65];
78 let mut wr = ::io::BufWriter::new(buf);
79 (write!(&mut wr, "{}", ::fmt::radix(n, radix as u8))).unwrap();
80 wr.tell().unwrap() as uint
85 #[deprecated = "use fmt::radix"]
86 impl ToStrRadix for $T {
87 /// Convert to a string in a given base.
89 fn to_str_radix(&self, radix: uint) -> String {
90 format!("{}", ::fmt::radix(*self, radix as u8))
104 pub fn test_to_str() {
105 assert_eq!((0 as $T).to_str_radix(10u), "0".to_string());
106 assert_eq!((1 as $T).to_str_radix(10u), "1".to_string());
107 assert_eq!((2 as $T).to_str_radix(10u), "2".to_string());
108 assert_eq!((11 as $T).to_str_radix(10u), "11".to_string());
109 assert_eq!((11 as $T).to_str_radix(16u), "b".to_string());
110 assert_eq!((255 as $T).to_str_radix(16u), "ff".to_string());
111 assert_eq!((0xff as $T).to_str_radix(10u), "255".to_string());
115 pub fn test_from_str() {
116 assert_eq!(from_str::<$T>("0"), Some(0u as $T));
117 assert_eq!(from_str::<$T>("3"), Some(3u as $T));
118 assert_eq!(from_str::<$T>("10"), Some(10u as $T));
119 assert_eq!(from_str::<u32>("123456789"), Some(123456789 as u32));
120 assert_eq!(from_str::<$T>("00100"), Some(100u as $T));
122 assert!(from_str::<$T>("").is_none());
123 assert!(from_str::<$T>(" ").is_none());
124 assert!(from_str::<$T>("x").is_none());
128 pub fn test_parse_bytes() {
130 assert_eq!(parse_bytes("123".as_bytes(), 10u), Some(123u as $T));
131 assert_eq!(parse_bytes("1001".as_bytes(), 2u), Some(9u as $T));
132 assert_eq!(parse_bytes("123".as_bytes(), 8u), Some(83u as $T));
133 assert_eq!(u16::parse_bytes("123".as_bytes(), 16u), Some(291u as u16));
134 assert_eq!(u16::parse_bytes("ffff".as_bytes(), 16u), Some(65535u as u16));
135 assert_eq!(parse_bytes("z".as_bytes(), 36u), Some(35u as $T));
137 assert!(parse_bytes("Z".as_bytes(), 10u).is_none());
138 assert!(parse_bytes("_".as_bytes(), 2u).is_none());
142 fn test_uint_to_str_overflow() {
143 let mut u8_val: u8 = 255_u8;
144 assert_eq!(u8_val.to_str(), "255".to_string());
147 assert_eq!(u8_val.to_str(), "0".to_string());
149 let mut u16_val: u16 = 65_535_u16;
150 assert_eq!(u16_val.to_str(), "65535".to_string());
153 assert_eq!(u16_val.to_str(), "0".to_string());
155 let mut u32_val: u32 = 4_294_967_295_u32;
156 assert_eq!(u32_val.to_str(), "4294967295".to_string());
159 assert_eq!(u32_val.to_str(), "0".to_string());
161 let mut u64_val: u64 = 18_446_744_073_709_551_615_u64;
162 assert_eq!(u64_val.to_str(), "18446744073709551615".to_string());
165 assert_eq!(u64_val.to_str(), "0".to_string());
169 fn test_uint_from_str_overflow() {
170 let mut u8_val: u8 = 255_u8;
171 assert_eq!(from_str::<u8>("255"), Some(u8_val));
172 assert!(from_str::<u8>("256").is_none());
175 assert_eq!(from_str::<u8>("0"), Some(u8_val));
176 assert!(from_str::<u8>("-1").is_none());
178 let mut u16_val: u16 = 65_535_u16;
179 assert_eq!(from_str::<u16>("65535"), Some(u16_val));
180 assert!(from_str::<u16>("65536").is_none());
183 assert_eq!(from_str::<u16>("0"), Some(u16_val));
184 assert!(from_str::<u16>("-1").is_none());
186 let mut u32_val: u32 = 4_294_967_295_u32;
187 assert_eq!(from_str::<u32>("4294967295"), Some(u32_val));
188 assert!(from_str::<u32>("4294967296").is_none());
191 assert_eq!(from_str::<u32>("0"), Some(u32_val));
192 assert!(from_str::<u32>("-1").is_none());
194 let mut u64_val: u64 = 18_446_744_073_709_551_615_u64;
195 assert_eq!(from_str::<u64>("18446744073709551615"), Some(u64_val));
196 assert!(from_str::<u64>("18446744073709551616").is_none());
199 assert_eq!(from_str::<u64>("0"), Some(u64_val));
200 assert!(from_str::<u64>("-1").is_none());
205 pub fn to_str_radix1() {
206 100u.to_str_radix(1u);
211 pub fn to_str_radix37() {
212 100u.to_str_radix(37u);