Struct enum_ptr::CompactCopy

#[repr(transparent)]
pub struct CompactCopy<T>where
    T: From<CompactCopy<T>> + Copy,
    CompactCopy<T>: From<T>,{ /* private fields */ }

Copy version of Compact.

Examples

use enum_ptr::{CompactCopy, EnumPtr};

#[derive(EnumPtr, Debug, Clone, Copy, PartialEq, Eq)]
#[enum_ptr(copy)] // required
#[repr(C, usize)]
enum Foo<'a, 'b> {
    A(&'a i32),
    B(&'b u32),
}

let foo: CompactCopy<_> = Foo::A(&1).into();
assert_eq!(foo.extract(), Foo::A(&1));
assert_ne!(foo.extract(), Foo::B(&2));

Implementations

impl<T> CompactCopy<T>where T: From<CompactCopy<T>> + Copy, CompactCopy<T>: From<T>,

pub fn as_raw_data(&self) -> *const u8

Returns the underlying raw data.

pub fn extract(self) -> T

Alias of T::from(self).

Trait Implementations

impl<T> Clone for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Clone, CompactCopy<T>: From<T>,

fn clone(&self) -> CompactCopy<T>

Returns a copy of the value.

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

Performs copy-assignment from source.

impl<T> Debug for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Debug, CompactCopy<T>: From<T>,

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

Formats the value using the given formatter.

impl<T> Default for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Default, CompactCopy<T>: From<T>,

fn default() -> Self

Returns the “default value” for a type.

impl<T> From<Compact<T>> for CompactCopy<T>where T: From<Compact<T>> + From<CompactCopy<T>> + Copy, Compact<T>: From<T>, CompactCopy<T>: From<T>,

fn from(value: Compact<T>) -> Self

Converts to this type from the input type.

impl<T> From<CompactCopy<T>> for Compact<T>where T: From<Compact<T>> + From<CompactCopy<T>> + Copy, Compact<T>: From<T>, CompactCopy<T>: From<T>,

fn from(value: CompactCopy<T>) -> Self

Converts to this type from the input type.

impl<T> Hash for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Hash, CompactCopy<T>: From<T>,

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<T> Ord for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Ord, CompactCopy<T>: From<T>,

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl<T> PartialEq<CompactCopy<T>> for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + PartialEq, CompactCopy<T>: From<T>,

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

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

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

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

impl<T> PartialOrd<CompactCopy<T>> for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + PartialOrd, CompactCopy<T>: From<T>,

fn partial_cmp(&self, other: &Self) -> Option<Ordering>

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl<T> Copy for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Copy, CompactCopy<T>: From<T>,

impl<T> Eq for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Eq, CompactCopy<T>: From<T>,

impl<T> Send for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Send, CompactCopy<T>: From<T>,

impl<T> Sync for CompactCopy<T>where T: From<CompactCopy<T>> + Copy + Sync, CompactCopy<T>: From<T>,