a6c6efb7e6
<!-- Please describe your changes on the following line: --> Automatically verify that derive() lists are alphabetically ordered #18172 --- <!-- Thank you for contributing to Servo! Please replace each `[ ]` by `[X]` when the step is complete, and replace `__` with appropriate data: --> - [X] `./mach build -d` does not report any errors - [X] `./mach test-tidy` does not report any errors - [X] These changes fix #18172 (github issue number if applicable). <!-- Either: --> - [X] There are tests for these changes OR - [ ] These changes do not require tests because _____ <!-- Also, please make sure that "Allow edits from maintainers" checkbox is checked, so that we can help you if you get stuck somewhere along the way.--> <!-- Pull requests that do not address these steps are welcome, but they will require additional verification as part of the review process. --> Source-Repo: https://github.com/servo/servo Source-Revision: 474369618965569407d127b1e8c481e757cc59d3
48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
/* 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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//! The `Finite<T>` struct.
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use heapsize::HeapSizeOf;
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use num_traits::Float;
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use std::ops::Deref;
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/// Encapsulates the IDL restricted float type.
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#[derive(Clone, Copy, Eq, JSTraceable, PartialEq)]
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pub struct Finite<T: Float>(T);
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impl<T: Float> Finite<T> {
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/// Create a new `Finite<T: Float>` safely.
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pub fn new(value: T) -> Option<Finite<T>> {
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if value.is_finite() {
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Some(Finite(value))
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} else {
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None
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}
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}
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/// Create a new `Finite<T: Float>`.
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#[inline]
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pub fn wrap(value: T) -> Finite<T> {
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assert!(value.is_finite(),
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"Finite<T> doesn't encapsulate unrestricted value.");
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Finite(value)
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}
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}
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impl<T: Float> Deref for Finite<T> {
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type Target = T;
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fn deref(&self) -> &T {
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let &Finite(ref value) = self;
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value
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}
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}
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impl<T: Float + HeapSizeOf> HeapSizeOf for Finite<T> {
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fn heap_size_of_children(&self) -> usize {
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(**self).heap_size_of_children()
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}
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}
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