RuleWeight

Struct RuleWeight 

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pub struct RuleWeight(/* private fields */);
Expand description

The weight of a rule (unique for each rule).

Weight of a rule is composed of multiple factors.

  • High 16 bits is for the selector, while the detailed layout is -MICCCCCCCCP--TT:
    • M - the important bit;
    • I - the ID selector bit;
    • C - the sum of the class selectors and the attribute selectors (max 255);
    • P - the pseudo class bit;
    • T - the sum of the tag name selector and the pseudo element selector.
  • High 16th~31st bits is the style sheet index (0-based index).
  • High 32nd~63rd bits is the rule index in the whole linked style sheet (1-based index).

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impl RuleWeight

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pub fn normal(&self) -> u64

Get the underlying weight number.

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pub fn important(&self) -> u64

Get the underlying weight number with !important added.

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pub fn sheet_index(&self) -> u16

Get the style sheet index.

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pub fn rule_index(&self) -> u32

Get the rule index.

Trait Implementations§

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impl Clone for RuleWeight

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fn clone(&self) -> RuleWeight

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for RuleWeight

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
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impl PartialEq for RuleWeight

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fn eq(&self, other: &RuleWeight) -> bool

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Copy for RuleWeight

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impl Eq for RuleWeight

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impl StructuralPartialEq for RuleWeight

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impl<T> Any for T
where T: 'static + ?Sized,

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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