Struct precompile_utils::solidity::codec::Writer

pub struct Writer { /* private fields */ }

Help build an EVM input/output data.

Functions takes self to allow chaining all calls like Writer::new().write(...).write(...).build(). While it could be more ergonomic to take &mut self, this would prevent to have a build function that don’t clone the output.

Implementations

impl Writer

pub fn new() -> Self

Creates a new empty output builder (without selector).

pub fn new_with_selector(selector: impl Into<u32>) -> Self

Creates a new empty output builder with provided selector. Selector will only be appended before the data when calling build to not mess with the offsets.

pub fn build(self) -> Vec<u8>

pub fn write<T: Codec>(self, value: T) -> Self

Write data of requested type.

pub fn write_pointer(&mut self, data: Vec<u8>)

Writes a pointer to given data. The data will be appended when calling build. Initially write a dummy value as offset in this writer’s data, which will be replaced by the correct offset once the pointed data is appended.

Takes &mut self since its goal is to be used inside solidity::Codec impl and not in chains.

Trait Implementations

impl Clone for Writer

fn clone(&self) -> Writer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Writer

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

Formats the value using the given formatter.

impl Default for Writer

fn default() -> Writer

Returns the “default value” for a type.