Enum Either 

pub enum Either<A, B, C = Invalid, D = Invalid> {
    First(A),
    Second(B),
    Third(C),
    Fourth(D),
}

Parse an item in a given list. If multiple types can be parsed, the first one is chosen.

Variants

First(A)

Second(B)

Third(C)

Fourth(D)

Implementations

impl<A, B, C, D> Either<A, B, C, D>

pub fn is_first(&self) -> bool

Check if the type of the parsed value is the first one.

pub fn is_second(&self) -> bool

Check if the type of the parsed value is the second one.

pub fn is_third(&self) -> bool

Check if the type of the parsed value is the third one.

pub fn is_fourth(&self) -> bool

Check if the type of the parsed value is the fourth one.

Trait Implementations

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

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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

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

Formats the value using the given formatter.

impl<A: Hash, B: Hash, C: Hash, D: Hash> Hash for Either<A, B, C, D>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<A: Ord, B: Ord, C: Ord, D: Ord> Ord for Either<A, B, C, D>

fn cmp(&self, other: &Either<A, B, C, D>) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl<A: ParseMore, B: ParseMore, C: ParseMore, D: ParseMore> ParseMore for Either<A, B, C, D>

Imlement ParseMore for the Either type.

fn parse(input: ParseStream<'_>) -> Result<Self>

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

fn eq(&self, other: &Either<A, B, C, D>) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

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

impl<A: PartialOrd, B: PartialOrd, C: PartialOrd, D: PartialOrd> PartialOrd for Either<A, B, C, D>

fn partial_cmp(&self, other: &Either<A, B, C, D>) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

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

impl<A: Eq, B: Eq, C: Eq, D: Eq> Eq for Either<A, B, C, D>

impl<A, B, C, D> StructuralPartialEq for Either<A, B, C, D>