eeb94886ad
This commit removes all the old casting/generic traits from `std::num` that are no longer in use by the standard library. This additionally removes the old `strconv` module which has not seen much use in quite a long time. All generic functionality has been supplanted with traits in the `num` crate and the `strconv` module is supplanted with the [rust-strconv crate][rust-strconv]. [rust-strconv]: https://github.com/lifthrasiir/rust-strconv This is a breaking change due to the removal of these deprecated crates, and the alternative crates are listed above. [breaking-change]
98 lines
3 KiB
Rust
98 lines
3 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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pub trait ToPrimitive {
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fn to_i8(&self) -> Option<i8>;
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fn to_i16(&self) -> Option<i16>;
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fn to_i32(&self) -> Option<i32>;
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fn to_i64(&self) -> Option<i64>;
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fn to_u8(&self) -> Option<u8>;
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fn to_u16(&self) -> Option<u16>;
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fn to_u32(&self) -> Option<u32>;
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fn to_u64(&self) -> Option<u64>;
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}
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impl ToPrimitive for i64 {
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fn to_i8(&self) -> Option<i8> {
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if *self < i8::min_value() as i64 || *self > i8::max_value() as i64 {
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None
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} else {
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Some(*self as i8)
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}
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}
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fn to_i16(&self) -> Option<i16> {
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if *self < i16::min_value() as i64 || *self > i16::max_value() as i64 {
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None
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} else {
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Some(*self as i16)
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}
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}
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fn to_i32(&self) -> Option<i32> {
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if *self < i32::min_value() as i64 || *self > i32::max_value() as i64 {
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None
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} else {
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Some(*self as i32)
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}
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}
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fn to_i64(&self) -> Option<i64> {
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Some(*self)
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}
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fn to_u8(&self) -> Option<u8> {
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if *self < 0 || *self > u8::max_value() as i64 {
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None
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} else {
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Some(*self as u8)
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}
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}
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fn to_u16(&self) -> Option<u16> {
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if *self < 0 || *self > u16::max_value() as i64 {
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None
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} else {
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Some(*self as u16)
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}
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}
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fn to_u32(&self) -> Option<u32> {
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if *self < 0 || *self > u32::max_value() as i64 {
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None
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} else {
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Some(*self as u32)
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}
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}
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fn to_u64(&self) -> Option<u64> {
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if *self < 0 {None} else {Some(*self as u64)}
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}
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}
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impl ToPrimitive for u64 {
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fn to_i8(&self) -> Option<i8> {
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if *self > i8::max_value() as u64 {None} else {Some(*self as i8)}
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}
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fn to_i16(&self) -> Option<i16> {
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if *self > i16::max_value() as u64 {None} else {Some(*self as i16)}
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}
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fn to_i32(&self) -> Option<i32> {
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if *self > i32::max_value() as u64 {None} else {Some(*self as i32)}
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}
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fn to_i64(&self) -> Option<i64> {
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if *self > i64::max_value() as u64 {None} else {Some(*self as i64)}
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}
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fn to_u8(&self) -> Option<u8> {
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if *self > u8::max_value() as u64 {None} else {Some(*self as u8)}
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}
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fn to_u16(&self) -> Option<u16> {
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if *self > u16::max_value() as u64 {None} else {Some(*self as u16)}
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}
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fn to_u32(&self) -> Option<u32> {
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if *self > u32::max_value() as u64 {None} else {Some(*self as u32)}
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}
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fn to_u64(&self) -> Option<u64> {
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Some(*self)
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}
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}
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