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7fe7b2ffb1
Most of types just derive it using proc_macro directly. Some of value types need manual impl. In my current plan, this new trait will be used in bug 1434130 to expose values as well. Bug: 1455576 Reviewed-by: emilio MozReview-Commit-ID: LI7fy45VkRw
31 lines
913 B
Rust
31 lines
913 B
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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//! Generic types for the column properties.
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/// A generic type for `column-count` values.
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#[derive(Animate, Clone, ComputeSquaredDistance, Copy, Debug, MallocSizeOf,
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PartialEq, SpecifiedValueInfo, ToAnimatedValue, ToAnimatedZero,
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ToComputedValue, ToCss)]
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pub enum ColumnCount<PositiveInteger> {
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/// A positive integer.
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Integer(PositiveInteger),
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/// The keyword `auto`.
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#[animation(error)]
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Auto,
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}
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impl<I> ColumnCount<I> {
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/// Returns `auto`.
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#[inline]
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pub fn auto() -> Self {
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ColumnCount::Auto
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}
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/// Returns whether this value is `auto`.
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#[inline]
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pub fn is_auto(self) -> bool {
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matches!(self, ColumnCount::Auto)
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}
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}
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