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style: Add a ValueInfo trait for exposing types needed by devtools.

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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
This commit is contained in:
Xidorn Quan 2018-04-26 09:01:02 +10:00 • committed by Emilio Cobos Álvarez
parent 276fb7e04b
commit 7fe7b2ffb1
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GPG key ID: 056B727BB9C1027C
66 changed files with 615 additions and 249 deletions
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16
components/style/values/specified/length.rs
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@ -13,7 +13,7 @@ use font_metrics::FontMetricsQueryResult;
use parser::{Parse, ParserContext};
use std::cmp;
use std::ops::{Add, Mul};
use style_traits::{ParseError, StyleParseErrorKind};
use style_traits::{ParseError, SpecifiedValueInfo, StyleParseErrorKind};
use style_traits::values::specified::AllowedNumericType;
use super::{AllowQuirks, Number, Percentage, ToComputedValue};
use values::{Auto, CSSFloat, Either, Normal};
@ -494,11 +494,13 @@ impl NoCalcLength {
}
}
impl SpecifiedValueInfo for NoCalcLength {}
/// An extension to `NoCalcLength` to parse `calc` expressions.
/// This is commonly used for the `<length>` values.
///
/// <https://drafts.csswg.org/css-values/#lengths>
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
pub enum Length {
/// The internal length type that cannot parse `calc`
NoCalc(NoCalcLength),
@ -699,7 +701,7 @@ pub type NonNegativeLengthOrAuto = Either<NonNegativeLength, Auto>;
/// A length or a percentage value.
#[allow(missing_docs)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
pub enum LengthOrPercentage {
Length(NoCalcLength),
Percentage(computed::Percentage),
@ -845,7 +847,7 @@ impl LengthOrPercentage {
/// Either a `<length>`, a `<percentage>`, or the `auto` keyword.
#[allow(missing_docs)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
pub enum LengthOrPercentageOrAuto {
Length(NoCalcLength),
Percentage(computed::Percentage),
@ -1015,7 +1017,7 @@ impl Parse for NonNegativeLengthOrPercentageOrAuto {
}
/// Either a `<length>`, a `<percentage>`, or the `none` keyword.
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
#[allow(missing_docs)]
pub enum LengthOrPercentageOrNone {
Length(NoCalcLength),
@ -1195,7 +1197,7 @@ impl LengthOrNumber {
///
/// Note that it only accepts non-negative values.
#[allow(missing_docs)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
pub enum MozLength {
LengthOrPercentageOrAuto(LengthOrPercentageOrAuto),
ExtremumLength(ExtremumLength),
@ -1252,7 +1254,7 @@ impl MozLength {
/// A value suitable for a `max-width` or `max-height` property.
#[allow(missing_docs)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, ToCss)]
#[derive(Clone, Debug, MallocSizeOf, PartialEq, SpecifiedValueInfo, ToCss)]
pub enum MaxLength {
LengthOrPercentageOrNone(LengthOrPercentageOrNone),
ExtremumLength(ExtremumLength),