nimbus-eth1/src/constants.nim

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import
bigints, math, strutils, tables, utils/padding
type
TypeHint* {.pure.} = enum UInt256, Bytes, Any
Int256* = BigInt #distinct int # TODO
proc int256*(i: int): Int256 =
i.initBigInt
template i256*(i: int): Int256 =
i.initBigInt
template i256*(i: Int256): Int256 =
i
template getInt*(i: int): int =
i
# TODO
# We'll have a fast fixed i256, for now this works
proc `==`*(a: Int256, b: int): bool =
a == b.i256
proc `!=`*(a: Int256, b: int): bool =
a != b.i256
proc `^`*(base: int; exp: int): Int256 =
let base = base.initBigInt
var ex = exp
result = 1.initBigInt
while ex > 0:
result *= base
dec(ex)
proc `^`*(left: Int256, right: int): Int256 =
var value = right.initBigInt
result = 1.initBigInt
var m = right.i256
while value > 0.i256:
result = result * m
value -= 1.i256
proc `>`*(a: Int256, b: int): bool =
a > b.i256
proc `<`*(a: Int256, b: int): bool =
a < b.i256
proc `mod`*(a: Int256, b: int): Int256 =
a mod b.i256
proc `div`*(a: Int256, b: int): Int256 =
a div b.i256
proc log256*(a: Int256): Int256 =
# TODO
2.i256
proc setXLen[T](s: var seq[T]; newlen: Natural) =
if s.isNil:
s = newSeq[T](newlen)
else:
s.setLen(newlen)
template mapOp(op: untyped): untyped =
proc `op`*(left: Int256, right: Int256): Int256 =
result = left.initBigInt
var maxRight = right.initBigInt
var l = max(left.limbs.len, right.limbs.len)
result.limbs.setXLen(l)
maxRight.limbs.setXLen(l)
for z in 0 ..< l:
result.limbs[z] = `op`(result.limbs[z], maxRight.limbs[z])
mapOp(`and`)
mapOp(`or`)
mapOp(`xor`)
proc `abs`*(a: Int256): Int256 =
if a >= 0.i256: a else: -a
template `getInt`*(a: Int256): int =
a.limbs[0].int
let
UINT_256_MAX*: Int256 = 2 ^ 256 - 1
UINT_256_CEILING*: Int256 = 2 ^ 256
UINT_255_MAX*: Int256 = 2 ^ (256 - 1) - 1
UINT_255_CEILING*: Int256 = 2 ^ (256 - 1)
NULLBYTE* = "\x00"
EMPTYWORD* = repeat(NULLBYTE, 32)
UINT160CEILING*: Int256 = 2 ^ 160
CREATE_CONTRACT_ADDRESS* = ""
ZERO_ADDRESS* = repeat("\x00", 20)
ZERO_HASH32* = repeat("\x00", 20)
STACK_DEPTH_LIMIT* = 1024
GAS_NULL* = 0.i256
GAS_ZERO* = 0.i256
GAS_BASE* = 2.i256
GAS_VERY_LOW* = 3.i256
GAS_LOW* = 5.i256
GAS_MID* = 8.i256
GAS_HIGH* = 10.i256
GAS_EXT_CODE* = 20.i256
GAS_BALANCE* = 20.i256
GAS_SLOAD* = 50.i256
GAS_JUMP_DEST* = 1.i256
GAS_SSET* = 20_000.i256
GAS_SRESET* = 5000.i256
GAS_EXT_CODE_COST* = 700.i256
GAS_COINBASE* = 20.i256
GAS_SLOAD_COST* = 20.i256
GAS_SELF_DESTRUCT_COST* = 5_000.i256
2018-01-30 14:35:12 +00:00
GAS_IN_HANDLER* = 0.i256 # to be calculated in handler
REFUNDS_CLEAR* = 15_000.i256
GAS_SELF_DESTRUCT* = 0.i256
GAS_SELF_DESTRUCT_NEW_ACCOUNT* = 25_000.i256
GAS_CREATE* = 32_000.i256
GAS_CALL* = 40.i256
GAS_CALL_VALUE* = 9_000.i256
GAS_CALL_STIPEND* = 2_300.i256
GAS_NEW_ACCOUNT* = 25_000.i256
GAS_COST_BALANCE* = 400.i256
GAS_EXP* = 10.i256
GAS_EXP_BYTE* = 10.i256
GAS_MEMORY* = 3.i256
GAS_TX_CREATE* = 32_000.i256
GAS_TX_DATA_ZERO* = 4.i256
GAS_TX_DATA_NON_ZERO* = 68.i256
GAS_TX* = 21_000.i256
GAS_LOG* = 375.i256
GAS_LOG_DATA* = 8.i256
GAS_LOG_TOPIC* = 375.i256
GAS_SHA3* = 30.i256
GAS_SHA3_WORD* = 6.i256
GAS_COPY* = 3.i256
GAS_BLOCK_HASH* = 20.i256
GAS_CODE_DEPOSIT* = 200.i256
GAS_MEMORY_QUADRATIC_DENOMINATOR* = 512.i256
GAS_SHA256* = 60.i256
GAS_SHA256WORD* = 12.i256
GAS_RIP_EMD160* = 600.i256
GAS_RIP_EMD160WORD* = 120.i256
GAS_IDENTITY* = 15.i256
GAS_IDENTITY_WORD* = 3
GAS_ECRECOVER* = 3_000.i256
GAS_ECADD* = 500.i256
GAS_ECMUL* = 40_000.i256
GAS_ECPAIRING_BASE* = 100_000.i256
GAS_ECPAIRING_PER_POINT* = 80_000.i256
GAS_LIMIT_EMA_DENOMINATOR* = 1_024.i256
GAS_LIMIT_ADJUSTMENT_FACTOR* = 1_024.i256
GAS_LIMIT_MAXIMUM*: Int256 = 2 ^ 63 - 1
GAS_LIMIT_USAGE_ADJUSTMENT_NUMERATOR* = 3.i256
GAS_LIMIT_USAGE_ADJUSTMENT_DENOMINATOR* = 2.i256
DIFFICULTY_ADJUSTMENT_DENOMINATOR* = 2_048.i256
DIFFICULTY_MINIMUM* = 131_072.i256
BOMB_EXPONENTIAL_PERIOD* = 100_000.i256
BOMB_EXPONENTIAL_FREE_PERIODS* = 2.i256
BLOCK_REWARD* = 5.i256 * 2.i256 # denoms.ether
UNCLE_DEPTH_PENALTY_FACTOR* = 8.i256
MAX_UNCLE_DEPTH* = 6.i256
MAX_UNCLES* = 2.i256
SECPK1_P*: Int256 = 2 ^ 256 - 2 ^ 32 - 977
SECPK1_N*: Int256 = "115792089237316195423570985008687907852837564279074904382605163141518161494337".initBigInt
SECPK1_A* = 0.i256
SECPK1_B* = 7.i256
SECPK1_Gx* = 0.i256
SECPK1_Gy* = 0.i256
SECPK1_G* = (SECPK1Gx, SECPK1Gy)
EMPTY_UNCLE_HASH* = "\x1d\xccM\xe8\xde\xc7]z\xab\x85\xb5g\xb6\xcc\xd4\x1a\xd3\x12E\x1b\x94\x8at\x13\xf0\xa1B\xfd@\xd4\x93G"
GENESIS_BLOCK_NUMBER* = 0.i256
GENESIS_DIFFICULTY* = 131_072.i256
GENESIS_GAS_LIMIT* = 3_141_592.i256
GENESIS_PARENT_HASH* = ZERO_HASH32
GENESIS_COINBASE* = ZERO_ADDRESS
GENESIS_NONCE* = "\x00\x00\x00\x00\x00\x00\x00B"
GENESIS_MIX_HASH* = ZERO_HASH32
GENESIS_EXTRA_DATA = ""
EMPTYSHA3 = "\xc5\xd2F\x01\x86\xf7#<\x92~}\xb2\xdc\xc7\x03\xc0\xe5\x00\xb6S\xca\x82';{\xfa\xd8\x04]\x85\xa4p"
BLANK_ROOT_HASH* = "V\xe8\x1f\x17\x1b\xccU\xa6\xff\x83E\xe6\x92\xc0\xf8n[H\xe0\x1b\x99l\xad\xc0\x01b/\xb5\xe3c\xb4!"
GAS_MOD_EXP_QUADRATIC_DENOMINATOR* = 20.i256
MAX_PREV_HEADER_DEPTH* = 256.i256