Struct EvmInstruction 

pub struct EvmInstruction {
    pub opcode: EvmOpcode,
    pub data: Option<Vec<u8>>,
    pub comment: Option<String>,
}

A single EVM instruction, consisting of an opcode and optional immediate data.

For PUSH1..PUSH32 opcodes the data field holds the bytes to push. For all other opcodes data is None.

Fields

opcode: EvmOpcode

The opcode for this instruction.

data: Option<Vec<u8>>

Optional immediate data bytes (used by PUSH instructions).

comment: Option<String>

Optional human-readable comment for assembly output.

Implementations

impl EvmInstruction

pub fn new(opcode: EvmOpcode) -> Self

Create a plain instruction with no immediate data.

pub fn push(bytes: Vec<u8>) -> Option<Self>

Create a PUSH instruction with the given byte vector.

Automatically selects the correct PUSH1..PUSH32 opcode.

pub fn push1(byte: u8) -> Self

Create a PUSH1 instruction for a single byte value.

pub fn push4(val: u32) -> Self

Create a PUSH4 instruction for a 4-byte value (used for function selectors).

pub fn push32(val: [u8; 32]) -> Self

Create a PUSH32 instruction for a 32-byte value.

pub fn with_comment(self, comment: impl Into<String>) -> Self

Attach a comment to this instruction (for assembly output).

pub fn encode(&self) -> Vec<u8>

Encode this instruction to its raw byte representation.

pub fn byte_len(&self) -> usize

Byte length of this instruction (opcode + immediate data).

Trait Implementations

impl Clone for EvmInstruction

fn clone(&self) -> EvmInstruction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for EvmInstruction

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

Formats the value using the given formatter.

impl Display for EvmInstruction

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

Formats the value using the given formatter.

impl PartialEq for EvmInstruction

fn eq(&self, other: &EvmInstruction) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for EvmInstruction