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Bug 1374233 - Part 1: Add NonNegativeNumber and GreaterThanOrEqualToOneNumber.

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NonNegativeNumber: for -moz-box-flex, flex-grow, and flex-shrink.
GreaterThanOrEqualToOneNumber: for stroke-miterlimit.

MozReview-Commit-ID: Kgbt99BPdVA
This commit is contained in:
Boris Chiou 2017-07-19 19:45:24 +08:00
parent 50c9797ddd
commit 4cc97746f2
12 changed files with 181 additions and 26 deletions
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35
components/style/values/computed/mod.rs
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@ -18,6 +18,7 @@ use std::f64::consts::PI;
use std::fmt;
use style_traits::ToCss;
use super::{CSSFloat, CSSInteger};
use super::generics::{GreaterThanOrEqualToOne, NonNegative};
use super::generics::grid::{TrackBreadth as GenericTrackBreadth, TrackSize as GenericTrackSize};
use super::generics::grid::GridTemplateComponent as GenericGridTemplateComponent;
use super::generics::grid::TrackList as GenericTrackList;
@ -425,6 +426,40 @@ impl ComputedValueAsSpecified for specified::BorderStyle {}
/// A `<number>` value.
pub type Number = CSSFloat;
/// A wrapper of Number, but the value >= 0.
pub type NonNegativeNumber = NonNegative<CSSFloat>;
impl From<CSSFloat> for NonNegativeNumber {
#[inline]
fn from(number: CSSFloat) -> NonNegativeNumber {
NonNegative::<CSSFloat>(number)
}
}
impl From<NonNegativeNumber> for CSSFloat {
#[inline]
fn from(number: NonNegativeNumber) -> CSSFloat {
number.0
}
}
/// A wrapper of Number, but the value >= 1.
pub type GreaterThanOrEqualToOneNumber = GreaterThanOrEqualToOne<CSSFloat>;
impl From<CSSFloat> for GreaterThanOrEqualToOneNumber {
#[inline]
fn from(number: CSSFloat) -> GreaterThanOrEqualToOneNumber {
GreaterThanOrEqualToOne::<CSSFloat>(number)
}
}
impl From<GreaterThanOrEqualToOneNumber> for CSSFloat {
#[inline]
fn from(number: GreaterThanOrEqualToOneNumber) -> CSSFloat {
number.0
}
}
#[allow(missing_docs)]
#[cfg_attr(feature = "servo", derive(HeapSizeOf))]
#[derive(Clone, Copy, Debug, PartialEq, ToCss)]