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Introduce enums for identifying CSS properties.

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* `LonghandId` and `ShorthandId` are C-like enums
* `Atom` is used for the name of custom properties.
* `PropertyDeclarationId` is the identifier for `PropertyDeclaration`,
  after parsing and shorthand expansion. (Longhand or custom property.)
* `PropertyId` represents any CSS property, e.g. in CSSOM.
  (Longhand, shorthand, or custom.)

Using these instead of strings avoids some memory allocations and copies.
This commit is contained in:
Simon Sapin 2016-10-10 16:00:28 +02:00
parent 97344b150d
commit 137e30b825
10 changed files with 334 additions and 278 deletions
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8
tests/unit/style/properties/serialization.rs
View file

@ -4,7 +4,7 @@
pub use std::sync::Arc;
pub use style::computed_values::display::T::inline_block;
pub use style::properties::{DeclaredValue, PropertyDeclaration, PropertyDeclarationBlock, Importance};
pub use style::properties::{DeclaredValue, PropertyDeclaration, PropertyDeclarationBlock, Importance, PropertyId};
pub use style::values::specified::{BorderStyle, BorderWidth, CSSColor, Length};
pub use style::values::specified::{LengthOrPercentage, LengthOrPercentageOrAuto, LengthOrPercentageOrAutoOrContent};
pub use style::properties::longhands::outline_color::computed_value::T as ComputedColor;
@ -1027,7 +1027,8 @@ mod shorthand_serialization {
let mut s = String::new();
let x = block.single_value_to_css("scroll-snap-type", &mut s);
let id = PropertyId::parse("scroll-snap-type".into()).unwrap();
let x = block.single_value_to_css(&id, &mut s);
assert_eq!(x.is_ok(), true);
assert_eq!(s, "");
@ -1049,7 +1050,8 @@ mod shorthand_serialization {
let mut s = String::new();
let x = block.single_value_to_css("scroll-snap-type", &mut s);
let id = PropertyId::parse("scroll-snap-type".into()).unwrap();
let x = block.single_value_to_css(&id, &mut s);
assert_eq!(x.is_ok(), true);
assert_eq!(s, "mandatory");