nimbus-eth1/nimbus/constants.nim

90 lines
3.4 KiB
Nim

{.used.}
import
eth/common/eth_types
# proc default(t: typedesc): t = discard -- notused
# constants
const
UINT_256_MAX*: UInt256 = high(UInt256)
INT_256_MAX_AS_UINT256* = high(UInt256) shr 1
UINT160CEILING*: UInt256 = 2.u256.pow(160)
# Transactions to ZERO_ADDRESS are legitimate transfers to that account, not
# contract creations. They are used to "burn" Eth. People also send Eth to
# address zero by accident, unrecoverably, due to poor user interface issues.
ZERO_ADDRESS* = default(EthAddress)
# ZERO_HASH256 is the parent hash of genesis blocks.
ZERO_HASH256* = Hash256()
GAS_LIMIT_ADJUSTMENT_FACTOR* = 1_024
BLOCK_REWARD* = 5.u256 * 2.u256 # denoms.ether
UNCLE_DEPTH_PENALTY_FACTOR* = 8.u256
MAX_UNCLE_DEPTH* = 6.u256
MAX_UNCLES* = 2
GENESIS_BLOCK_NUMBER* = 0.toBlockNumber
GENESIS_DIFFICULTY* = 131_072.u256
GENESIS_GAS_LIMIT* = 3_141_592
GENESIS_PARENT_HASH* = ZERO_HASH256
GENESIS_COINBASE* = ZERO_ADDRESS
GENESIS_NONCE* = "\x00\x00\x00\x00\x00\x00\x00B"
GENESIS_MIX_HASH* = ZERO_HASH256
GENESIS_EXTRA_DATA* = ""
GAS_LIMIT_MINIMUM* = 5000
GAS_LIMIT_MAXIMUM* = high(GasInt)
DEFAULT_GAS_LIMIT* = 8_000_000
EMPTY_SHA3* = "c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470".toDigest
GAS_MOD_EXP_QUADRATIC_DENOMINATOR* = 20.u256
MAX_PREV_HEADER_DEPTH* = 256.toBlockNumber
MaxCallDepth* = 1024
SECPK1_N* = UInt256.fromHex("fffffffffffffffffffffffffffffffebaaedce6af48a03bbfd25e8cd0364141")
## Fork specific constants
# See EIP-170 (https://eips.ethereum.org/EIPS/eip-170). Maximum code size
# that can be stored for a new contract. Init code when creating a new
# contract is not subject to this limit.
EIP170_MAX_CODE_SIZE* = 0x6000
# See EIP-3860 (https://eips.ethereum.org/EIPS/eip-3860). Maximum initcode
# size when creating a new contract.
EIP3860_MAX_INITCODE_SIZE* = 2 * EIP170_MAX_CODE_SIZE
# EIP
MaxPrecompilesAddr* = 0xFFFF
EXTRA_SEAL* = ##\
## Fixed number of suffix bytes reserved for signer seal of the `extraData`
## header field. The 65 bytes constant value is for signatures based on the
## standard secp256k1 curve.
65
DEFAULT_RPC_GAS_CAP* = 50_000_000.GasInt
# EIP-4844 constants
MAX_CALLDATA_SIZE* = 1 shl 24 # 2^24
MAX_ACCESS_LIST_SIZE* = 1 shl 24 # 2^24
MAX_ACCESS_LIST_STORAGE_KEYS* = 1 shl 24 # 2^24
MAX_VERSIONED_HASHES_LIST_SIZE* = 1 shl 24 # 2^24
MAX_TX_WRAP_COMMITMENTS* = 1 shl 12 # 2^12
LIMIT_BLOBS_PER_TX* = 1 shl 12 # 2^12
BLOB_COMMITMENT_VERSION_KZG* = 0x01.byte
FIELD_ELEMENTS_PER_BLOB* = 4096
DATA_GAS_PER_BLOB* = (1 shl 17).uint64 # 2^17
TARGET_DATA_GAS_PER_BLOCK* = (1 shl 18).uint64 # 2^18
MIN_DATA_GASPRICE* = 1'u64
DATA_GASPRICE_UPDATE_FRACTION* = 2225652'u64
MAX_DATA_GAS_PER_BLOCK* = (1 shl 19).uint64 # 2^19
# End