Enum Op 

pub enum Op<'a> {
    Copy {
        offset: u32,
        len: u32,
    },
    Add(&'a [u8]),
}

A single patch opcode.

Variants

Copy

Copy len bytes from old starting at offset.

Fields

offset: u32

Offset within old.

len: u32

Number of bytes to copy.

Add(&'a [u8])

Append a literal byte run.

Implementations

impl<'a> Op<'a>

pub fn serialize_to(&self, out: &mut Vec<u8>) -> Result<(), PatchError>

Serialize this op into out.

Errors

Returns PatchError::InputTooLarge if an Add payload exceeds u32::MAX bytes.

pub fn deserialize(input: &'a [u8]) -> Result<(Self, &'a [u8]), PatchError>

Parse the next opcode from input, returning the op and the remaining bytes.

Errors

See PatchError variants.

pub fn iter(patch: &'a [u8]) -> OpIter<'a>

Iterate the opcodes in patch lazily, without allocating a Vec.

Both container formats are accepted; the sectioned v2 layout is reassembled into the same opcode sequence a v1 patch would have carried. The base fingerprint in a v2 header is not checked here — crate::apply_patch does that.

Trait Implementations

impl<'a> Clone for Op<'a>

fn clone(&self) -> Op<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for Op<'a>

impl Debug for Op<'_>

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

Formats the value using the given formatter.

impl<'a> Eq for Op<'a>

impl<'a> Hash for Op<'a>

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> PartialEq for Op<'a>

fn eq(&self, other: &Op<'a>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for Op<'a>