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style: Rejigger serialization of a declaration block to not look at the shorthands length.

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This is because I'm going to make shorthands() and longhands() return an
iterator, so that we account for prefs properly
(https://bugzilla.mozilla.org/show_bug.cgi?id=1438234).
This commit is contained in:
Emilio Cobos Álvarez 2018-02-20 10:05:58 +01:00
parent c676b52448
commit e46f910b66
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GPG key ID: 056B727BB9C1027C
2 changed files with 18 additions and 14 deletions
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29
components/style/properties/declaration_block.rs
View file

@ -426,7 +426,7 @@ impl PropertyDeclarationBlock {
let all_shorthand_len = match drain.all_shorthand {
AllShorthand::NotSet => 0,
AllShorthand::CSSWideKeyword(_) |
AllShorthand::WithVariables(_) => ShorthandId::All.longhands().len()
AllShorthand::WithVariables(_) => shorthands::ALL_SHORTHAND_MAX_LEN,
};
let push_calls_count =
drain.declarations.len() + all_shorthand_len;
@ -784,8 +784,6 @@ impl PropertyDeclarationBlock {
// Step 3.3.2
for &shorthand in declaration.shorthands() {
let properties = shorthand.longhands();
// Substep 2 & 3
let mut current_longhands = SmallVec::<[_; 10]>::new();
let mut important_count = 0;
@ -811,21 +809,24 @@ impl PropertyDeclarationBlock {
}
}
} else {
for (longhand, importance) in self.declaration_importance_iter() {
if longhand.id().is_longhand_of(shorthand) {
current_longhands.push(longhand);
if importance.important() {
important_count += 1;
let mut contains_all_longhands = true;
for &longhand in shorthand.longhands() {
match self.get(PropertyDeclarationId::Longhand(longhand)) {
Some((declaration, importance)) => {
current_longhands.push(declaration);
if importance.important() {
important_count += 1;
}
}
None => {
contains_all_longhands = false;
break;
}
}
}
// Substep 1:
//
// Assuming that the PropertyDeclarationBlock contains no
// duplicate entries, if the current_longhands length is
// equal to the properties length, it means that the
// properties that map to shorthand are present in longhands
if current_longhands.len() != properties.len() {
if !contains_all_longhands {
continue;
}
}

3
components/style/properties/properties.mako.rs
View file

@ -193,6 +193,9 @@ pub mod shorthands {
spec="https://drafts.csswg.org/css-cascade-3/#all-shorthand"
)
%>
/// The max amount of longhands that the `all` shorthand will ever contain.
pub const ALL_SHORTHAND_MAX_LEN: usize = ${len(logical_longhands + other_longhands)};
}
<%