Trait OffsetSize 

pub trait OffsetSize:
    Copy
    + Default
    + Add<Output = Self>
    + AddAssign
    + Mul<Output = Self>
    + Rem<Output = Self>
    + PartialOrd
    + PartialEq
    + Debug
    + 'static {
    const INLINE_THRESHOLD: Self;
    const ZERO: Self;
    const ONE: Self;
    const TWO: Self;

    // Required methods
    fn checked_add(self, rhs: Self) -> Option<Self>;
    fn write_to(self, file: &mut EndianFile) -> Result<()>;
    fn from_usize(val: usize) -> Self;
    fn to_u64(self) -> u64;
}

Trait for offset sizes (u32 for TIFF, u64 for BigTIFF).

This trait abstracts over the integer type used for file offsets, allowing the same code to work with both standard TIFF (32-bit offsets) and Big///*TIFF (64-bit offsets).

Required Associated Constants

const INLINE_THRESHOLD: Self

The inline value threshold (4 for TIFF, 8 for BigTIFF).

const ZERO: Self

Zero value.

const ONE: Self

One value.

const TWO: Self

Two value (for word boundary checks).

Required Methods

fn checked_add(self, rhs: Self) -> Option<Self>

Checked addition that returns None on overflow.

fn write_to(self, file: &mut EndianFile) -> Result<()>

Write this offset value to an EndianFile.

fn from_usize(val: usize) -> Self

Convert from usize (for lengths).

fn to_u64(self) -> u64

Convert to u64 for comparisons and calculations.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl OffsetSize for u32

const INLINE_THRESHOLD: Self = 4

const ZERO: Self = 0

const ONE: Self = 1

const TWO: Self = 2

fn checked_add(self, rhs: Self) -> Option<Self>

fn write_to(self, file: &mut EndianFile) -> Result<()>

fn from_usize(val: usize) -> Self

fn to_u64(self) -> u64

impl OffsetSize for u64

const INLINE_THRESHOLD: Self = 8

const ZERO: Self = 0

const ONE: Self = 1

const TWO: Self = 2

fn checked_add(self, rhs: Self) -> Option<Self>

fn write_to(self, file: &mut EndianFile) -> Result<()>

fn from_usize(val: usize) -> Self

fn to_u64(self) -> u64

Implementors