Struct Environment 

pub struct Environment {

    pub origin: Address,
    pub gas_limit: u64,
    pub config: EVMConfig,
    pub block_number: u64,
    pub coinbase: Address,
    pub timestamp: u64,
    pub prev_randao: Option<H256>,
    pub difficulty: U256,
    pub slot_number: U256,
    pub chain_id: U256,
    pub base_fee_per_gas: U256,
    pub base_blob_fee_per_gas: U256,
    pub gas_price: U256,
    pub block_excess_blob_gas: Option<u64>,
    pub block_blob_gas_used: Option<u64>,
    pub tx_blob_hashes: Vec<H256>,
    pub tx_max_priority_fee_per_gas: Option<U256>,
    pub tx_max_fee_per_gas: Option<U256>,
    pub tx_max_fee_per_blob_gas: Option<U256>,
    pub tx_nonce: u64,
    pub block_gas_limit: u64,
    pub is_privileged: bool,
    pub fee_token: Option<Address>,
    pub disable_balance_check: bool,
    pub disable_nonce_check: bool,
    pub disable_gas_allowance_check: bool,
    pub is_system_call: bool,
}

Environmental information that the execution agent must provide.

Fields

origin: Address

The sender address of the external transaction.

gas_limit: u64

Gas limit of the Transaction

config: EVMConfig

block_number: u64

coinbase: Address

Coinbase is the block’s beneficiary - the address that receives the block rewards and fees.

timestamp: u64

prev_randao: Option<H256>

difficulty: U256

slot_number: U256

chain_id: U256

base_fee_per_gas: U256

base_blob_fee_per_gas: U256

gas_price: U256

block_excess_blob_gas: Option<u64>

block_blob_gas_used: Option<u64>

tx_blob_hashes: Vec<H256>

tx_max_priority_fee_per_gas: Option<U256>

tx_max_fee_per_gas: Option<U256>

tx_max_fee_per_blob_gas: Option<U256>

tx_nonce: u64

block_gas_limit: u64

is_privileged: bool

fee_token: Option<Address>

disable_balance_check: bool

When true, skip balance deduction in deduct_caller. Used by the prewarmer to avoid early reverts on insufficient balance so that warming touches more storage.

disable_nonce_check: bool

When true, skip the sender nonce-mismatch validation. Used by the simulation RPCs (eth_call, eth_estimateGas, eth_createAccessList): call objects may omit the nonce, and no client enforces it there. The account nonce still increments during execution. debug_traceCall relies on it too (geth’s ToMessage(_, skipNonceCheck=true)): the synthetic call may run on top of a mid-block state (txIndex) whose nonce differs from the value the caller supplied, so enforcing the check would spuriously reject the trace.

disable_gas_allowance_check: bool

When true, skip the gas limits that gate a transaction’s admission rather than its execution: the block-level gas allowance and the EIP-7825 per-transaction cap. Used by the simulation RPCs (eth_call, eth_estimateGas, debug_traceCall), whose callers routinely pass a gas above either bound — tools commonly pass the block gas limit — and still expect an answer, since nothing is being submitted. This exists so block_gas_limit can keep the block’s real value: that field is observable through the GASLIMIT opcode and feeds the EIP-8037 cost-per-state-byte formula, so raising it to bypass the allowance corrupts both.

is_system_call: bool

When true, the tx is a pre-execution system contract call (EIP-2935, EIP-4788, EIP-7002, EIP-7251 etc.). Skips the block-level gas-allowance check since system calls are allowed to exceed block_gas_limit (their 30M cap is a separate rule).

Trait Implementations

impl Clone for Environment

fn clone(&self) -> Environment

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Environment

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

Formats the value using the given formatter.

impl Default for Environment

fn default() -> Environment

Returns the “default value” for a type.