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

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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66 changed files with 615 additions and 249 deletions

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@ -7,7 +7,7 @@
use cssparser::{Parser, Token};
use parser::{Parse, ParserContext};
use std::fmt::{self, Write};
use style_traits::{CssWriter, ParseError, ToCss};
use style_traits::{CssWriter, ParseError, SpecifiedValueInfo, ToCss};
use values::CSSFloat;
use values::computed::{Context, ToComputedValue};
use values::computed::angle::Angle as ComputedAngle;
@ -203,3 +203,5 @@ impl Angle {
}.map_err(|()| input.new_unexpected_token_error(token.clone()))
}
}
impl SpecifiedValueInfo for Angle {}