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7ddf5e5c33
This makes the tests pass again on nightly, and avoids using legacy IP while we have glorious IPv6 support everywhere nowadays. See also https://github.com/rust-lang/rust/issues/90199
94 lines
2.5 KiB
Rust
94 lines
2.5 KiB
Rust
// Copyright (c) 2020 lumi <lumi@pew.im>
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// Copyright (c) 2020 Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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//! A module which exports a few traits for converting types to elements and attributes.
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/// A trait for types which can be converted to an attribute value.
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pub trait IntoAttributeValue {
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/// Turns this into an attribute string, or None if it shouldn't be added.
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fn into_attribute_value(self) -> Option<String>;
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}
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macro_rules! impl_into_attribute_value {
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($t:ty) => {
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impl IntoAttributeValue for $t {
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fn into_attribute_value(self) -> Option<String> {
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Some(format!("{}", self))
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}
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}
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};
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}
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macro_rules! impl_into_attribute_values {
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($($t:ty),*) => {
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$(impl_into_attribute_value!($t);)*
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}
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}
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impl_into_attribute_values!(
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usize,
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u64,
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u32,
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u16,
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u8,
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isize,
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i64,
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i32,
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i16,
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i8,
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::std::net::IpAddr
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);
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impl IntoAttributeValue for String {
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fn into_attribute_value(self) -> Option<String> {
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Some(self)
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}
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}
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impl<'a> IntoAttributeValue for &'a String {
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fn into_attribute_value(self) -> Option<String> {
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Some(self.to_owned())
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}
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}
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impl<'a> IntoAttributeValue for &'a str {
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fn into_attribute_value(self) -> Option<String> {
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Some(self.to_owned())
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}
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}
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impl<T: IntoAttributeValue> IntoAttributeValue for Option<T> {
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fn into_attribute_value(self) -> Option<String> {
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self.and_then(IntoAttributeValue::into_attribute_value)
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}
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}
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#[cfg(test)]
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mod tests {
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use super::IntoAttributeValue;
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use std::net::IpAddr;
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use std::str::FromStr;
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#[test]
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fn test_into_attribute_value_on_ints() {
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assert_eq!(16u8.into_attribute_value().unwrap(), "16");
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assert_eq!(17u16.into_attribute_value().unwrap(), "17");
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assert_eq!(18u32.into_attribute_value().unwrap(), "18");
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assert_eq!(19u64.into_attribute_value().unwrap(), "19");
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assert_eq!(16i8.into_attribute_value().unwrap(), "16");
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assert_eq!((-17i16).into_attribute_value().unwrap(), "-17");
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assert_eq!(18i32.into_attribute_value().unwrap(), "18");
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assert_eq!((-19i64).into_attribute_value().unwrap(), "-19");
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assert_eq!(
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IpAddr::from_str("0000:0::1")
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.unwrap()
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.into_attribute_value()
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.unwrap(),
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"::1"
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);
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}
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}
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