Crate eot 

EOT - EVM Opcode Table

A comprehensive Rust library for EVM opcodes with fork-aware metadata, gas cost tracking, and bytecode analysis utilities.

Architecture

The core type is OpCode, a transparent newtype over u8 backed by a static [Option<OpCodeInfo>; 256] lookup table. This gives O(1) opcode lookups with zero heap allocation.

Fork-specific gas costs are handled by OpCode::gas_cost, which applies known EIP gas changes on top of the base cost stored in OpCodeInfo.

Quick Start

use eot::{OpCode, Fork};

let add = OpCode::ADD;
assert_eq!(add.gas_cost(Fork::Frontier), 3);
assert!(add.is_valid_in(Fork::Frontier));

// Parse from byte
let op = OpCode::new(0x60).unwrap();
assert_eq!(op, OpCode::PUSH1);

Re-exports

pub use gas::DynamicGasCalculator;

pub use gas::ExecutionContext;

pub use gas::GasAnalysis;

pub use gas::GasCostCategory;

Modules

gas

Gas cost analysis for EVM opcodes.

validation

Validation of the opcode table for internal consistency.

Structs

OpCode

A single EVM opcode, stored as a transparent u8 wrapper.

OpCodeInfo

Static metadata for a single EVM opcode.

Enums

Fork

Ethereum hard forks that affect EVM opcode behavior.

Group

Opcode categories following the Yellow Paper grouping.