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RangedForm

css_ast::feature_metadata

Enum RangedForm

pub enum RangedForm {
    Bare,
    Exact {
        value: Span,
    },
    LegacyMin {
        value: Span,
    },
    LegacyMax {
        value: Span,
    },
    Left {
        comparison: Comparison,
        value: Span,
    },
    Right {
        value: Span,
        comparison: Comparison,
    },
    Range {
        left: Span,
        left_cmp: Comparison,
        right_cmp: Comparison,
        right: Span,
    },
}

Expand description

The form of a ranged feature expression.

Covers all syntactic forms including bare presence check, legacy min/max prefix, modern colon, and range comparison operators.

Variants§

Bare

(feature) — bare presence/boolean check of a ranged feature.

Exact

(feature: value) — modern colon form.

Fields

§value: Span

LegacyMin

(min-feature: value) — legacy min-prefixed colon form.

Fields

§value: Span

LegacyMax

(max-feature: value) — legacy max-prefixed colon form.

Fields

§value: Span

Left

(feature op value) — feature name on the left of the comparison.

Fields

§comparison: Comparison

§value: Span

Right

(value op feature) — feature name on the right of the comparison.

Fields

§value: Span

§comparison: Comparison

Range

(v1 op feature op v2) — range with feature name in the middle.

Fields

§left: Span

§left_cmp: Comparison

§right_cmp: Comparison

§right: Span

Trait Implementations§

impl Clone for RangedForm

fn clone(&self) -> RangedForm

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl Debug for RangedForm

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

impl Freeze for RangedForm

impl RefUnwindSafe for RangedForm

impl Send for RangedForm

impl Sync for RangedForm

impl Unpin for RangedForm

impl UnsafeUnpin for RangedForm

impl UnwindSafe for RangedForm

Blanket Implementations§

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

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> CloneToUninit for T
where T: Clone,

unsafe fn clone_to_uninit(&self, dest: *mut u8)

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

Performs copy-assignment from self to dest. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, S> SimdFrom<T, S> for T
where S: Simd,

fn simd_from(_simd: S, value: T) -> T

impl<F, T, S> SimdInto<T, S> for F
where T: SimdFrom<F, S>, S: Simd,

fn simd_into(self, simd: S) -> T

impl<T> ToOwned for T
where T: Clone,

type Owned = T

The resulting type after obtaining ownership.

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.