Struct evm::Memory

pub struct Memory { /* fields omitted */ }

A sequencial memory. It uses Rust's Vec for internal representation.

Methods

impl Memory

pub fn new(limit: usize) -> Memory

pub fn limit(&self) -> usize

pub fn len(&self) -> usize

Get the length of the current memory range.

pub fn effective_len(&self) -> U256

Get the effective length.

pub fn is_empty(&self) -> bool

Return true if current effective memory range is zero.

pub fn resize_offset(
    &mut self,
    offset: U256,
    len: U256
) -> Result<(), ExitError>

pub fn resize_end(&mut self, end: U256) -> Result<(), ExitError>

pub fn get(&self, offset: usize, size: usize) -> Vec<u8>

Get memory region at given offset.

Panics

Value of size is considered trusted. If they're too large, the program can run out of memory, or it can overflow.

pub fn set(
    &mut self,
    offset: usize,
    value: &[u8],
    target_size: Option<usize>
) -> Result<(), ExitFatal>

Set memory region at given offset. The offset and value is considered untrusted.

pub fn copy_large(
    &mut self,
    memory_offset: U256,
    data_offset: U256,
    len: U256,
    data: &[u8]
) -> Result<(), ExitFatal>

Trait Implementations

impl Debug for Memory

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

Formats the value using the given formatter.

impl Clone for Memory

fn clone(&self) -> Memory

Returns a copy of the value.

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

Performs copy-assignment from source.