Enum style::values::Either

pub enum Either<A, B> {
    First(A),
    Second(B),
}

A struct representing one of two kinds of values.

Variants

First(A)

The first value.

Second(B)

The second kind of value.

Methods

impl<T: Parse> Either<Length, T>

pub fn parse_non_negative_length<'i, 't>(
    context: &ParserContext,
    input: &mut Parser<'i, 't>
) -> Result<Self, ParseError<'i>>

Parse a non-negative length

Trait Implementations

impl<T: Parse> Parse for Either<NonNegativeLength, T>

fn parse<'i, 't>(
    context: &ParserContext,
    input: &mut Parser<'i, 't>
) -> Result<Self, ParseError<'i>>

Parse a value of this type.

impl<A, B> Animate for Either<A, B> where
    A: Animate,
    B: Animate, 

fn animate(&self, other: &Self, procedure: Procedure) -> Result<Self, ()>

Animate a value towards another one, given an animation procedure.

impl<A: Clone, B: Clone> Clone for Either<A, B>

fn clone(&self) -> Either<A, B>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<A, B> ComputeSquaredDistance for Either<A, B> where
    A: ComputeSquaredDistance,
    B: ComputeSquaredDistance, 

fn compute_squared_distance(&self, other: &Self) -> Result<SquaredDistance, ()>

Computes the squared distance between two animatable values.

impl<A: Copy, B: Copy> Copy for Either<A, B>

impl<A, B> MallocSizeOf for Either<A, B> where
    A: MallocSizeOf,
    B: MallocSizeOf, 

fn size_of(&self, ops: &mut MallocSizeOfOps) -> usize

Measure the heap usage of all descendant heap-allocated structures, but not the space taken up by the value itself.

impl<A: PartialEq, B: PartialEq> PartialEq for Either<A, B>

fn eq(&self, __arg_0: &Either<A, B>) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, __arg_0: &Either<A, B>) -> bool

This method tests for !=.

impl<A, B> ToAnimatedValue for Either<A, B> where
    A: ToAnimatedValue,
    B: ToAnimatedValue, 

type AnimatedValue = Either<<A as ToAnimatedValue>::AnimatedValue, <B as ToAnimatedValue>::AnimatedValue>

The type of the animated value.

fn to_animated_value(self) -> Self::AnimatedValue

Converts this value to an animated value.

fn from_animated_value(animated: Self::AnimatedValue) -> Self

Converts back an animated value into a computed value.

impl<A, B> ToAnimatedZero for Either<A, B> where
    A: ToAnimatedZero,
    B: ToAnimatedZero, 

fn to_animated_zero(&self) -> Result<Self, ()>

Returns a value that, when added with an underlying value, will produce the underlying value. This is used for SMIL animation's "by-animation" where SMIL first interpolates from the zero value to the 'by' value, and then adds the result to the underlying value.

impl<A, B> ToComputedValue for Either<A, B> where
    A: ToComputedValue,
    B: ToComputedValue, 

type ComputedValue = Either<<A as ToComputedValue>::ComputedValue, <B as ToComputedValue>::ComputedValue>

The computed value type we're going to be converted to.

fn to_computed_value(&self, context: &Context) -> Self::ComputedValue

Convert a specified value to a computed value, using itself and the data inside the Context.

fn from_computed_value(computed: &Self::ComputedValue) -> Self

Convert a computed value to specified value form.

impl<A, B> ToCss for Either<A, B> where
    A: ToCss,
    B: ToCss, 

fn to_css<W>(&self, dest: &mut W) -> Result where
    W: Write, 

Serialize self in CSS syntax, writing to dest.

fn to_css_string(&self) -> String

Serialize self in CSS syntax and return a string.

impl<A: Debug, B: Debug> Debug for Either<A, B>

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

Formats the value using the given formatter.

impl<A: Parse, B: Parse> Parse for Either<A, B>

fn parse<'i, 't>(
    context: &ParserContext,
    input: &mut Parser<'i, 't>
) -> Result<Either<A, B>, ParseError<'i>>

Parse a value of this type.

impl RepeatableListAnimatable for Either<f32, LengthOrPercentage>

impl RepeatableListAnimatable for Either<NonNegativeNumber, NonNegativeLengthOrPercentage>