Trait style::values::resolved::ToResolvedValue

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pub trait ToResolvedValue {
    type ResolvedValue;

    fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue;
    fn from_resolved_value(resolved: Self::ResolvedValue) -> Self;
}

Expand description

A trait to represent the conversion between resolved and resolved values.

This trait is derivable with #[derive(ToResolvedValue)].

The deriving code assumes that if the type isn’t generic, then the trait can be implemented as simple move. This means that a manual implementation with ResolvedValue = Self is bogus if it returns anything else than a clone.

Required Associated Types§

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type ResolvedValue

The resolved value type we’re going to be converted to.

Required Methods§

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fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

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We implement this at resolved value time because otherwise it causes us to allocate a bunch of useless initial structs for ::before / ::after, which is a bit unfortunate.

Required Associated Types§

type ResolvedValue

Required Methods§

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

Implementations on Foreign Types§

impl ToResolvedValue for ()

type ResolvedValue = ()

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for bool

type ResolvedValue = bool

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for f32

type ResolvedValue = f32

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for i32

type ResolvedValue = i32

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for u8

type ResolvedValue = u8

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for i8

type ResolvedValue = i8

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for u16

type ResolvedValue = u16

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for u32

type ResolvedValue = u32

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for usize

type ResolvedValue = usize

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for String

type ResolvedValue = String

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for Box<str>

type ResolvedValue = Box<str, Global>

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl ToResolvedValue for AllowedNumericType

type ResolvedValue = AllowedNumericType

fn to_resolved_value(self, _: &Context<'_>) -> Self

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl<A, B> ToResolvedValue for (A, B)where A: ToResolvedValue, B: ToResolvedValue,

type ResolvedValue = (<A as ToResolvedValue>::ResolvedValue, <B as ToResolvedValue>::ResolvedValue)

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl<T> ToResolvedValue for Option<T>where T: ToResolvedValue,

type ResolvedValue = Option<<T as ToResolvedValue>::ResolvedValue>

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl<T> ToResolvedValue for SmallVec<[T; 1]>where T: ToResolvedValue,

type ResolvedValue = SmallVec<[<T as ToResolvedValue>::ResolvedValue; 1]>

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl<T> ToResolvedValue for Vec<T>where T: ToResolvedValue,

type ResolvedValue = Vec<<T as ToResolvedValue>::ResolvedValue, Global>

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl<T> ToResolvedValue for Box<T>where T: ToResolvedValue,

type ResolvedValue = Box<<T as ToResolvedValue>::ResolvedValue, Global>

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

impl<T> ToResolvedValue for Box<[T]>where T: ToResolvedValue,

type ResolvedValue = Box<[<T as ToResolvedValue>::ResolvedValue], Global>

fn to_resolved_value(self, context: &Context<'_>) -> Self::ResolvedValue

fn from_resolved_value(resolved: Self::ResolvedValue) -> Self

Implementors§

impl<A, B> ToResolvedValue for (A, B)where
A: ToResolvedValue,
B: ToResolvedValue,

impl<T> ToResolvedValue for Option<T>where
T: ToResolvedValue,

impl<T> ToResolvedValue for SmallVec<[T; 1]>where
T: ToResolvedValue,

impl<T> ToResolvedValue for Vec<T>where
T: ToResolvedValue,

impl<T> ToResolvedValue for Box<T>where
T: ToResolvedValue,

impl<T> ToResolvedValue for Box<[T]>where
T: ToResolvedValue,

impl ToResolvedValue for Symbolwhere
OwnedStr: ToResolvedValue<ResolvedValue = OwnedStr>,
CustomIdent: ToResolvedValue<ResolvedValue = CustomIdent>,