Trait offset_allocator::NodeIndex

pub trait NodeIndex: Clone + Copy + Default {
    type NonMax: NodeIndexNonMax + TryFrom<Self> + Into<Self>;

    const MAX: u32;

    // Required methods
    fn from_u32(val: u32) -> Self;
    fn to_usize(self) -> usize;
}

Determines the number of allocations that the allocator supports.

By default, Allocator and related functions use u32, which allows for u32::MAX - 1 allocations. You can, however, use u16 instead, which causes the allocator to use less memory but limits the number of allocations within a single allocator to at most 65,534.

Required Associated Types

type NonMax: NodeIndexNonMax + TryFrom<Self> + Into<Self>

The NonMax version of this type.

This is used extensively to optimize enum representations.

Required Associated Constants

const MAX: u32

The maximum value representable in this type.

Required Methods

fn from_u32(val: u32) -> Self

Converts from a unsigned 32-bit integer to an instance of this type.

fn to_usize(self) -> usize

Converts this type to an unsigned machine word.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl NodeIndex for u16

type NonMax = NonMaxU16

const MAX: u32 = 65_535u32

fn from_u32(val: u32) -> Self

fn to_usize(self) -> usize

impl NodeIndex for u32

type NonMax = NonMaxU32

const MAX: u32 = 4_294_967_295u32

fn from_u32(val: u32) -> Self

fn to_usize(self) -> usize

Implementors