params

const (
	// Computation cost for opcodes
	ExtCodeHashComputationCost    = 1000
	Create2ComputationCost        = 10000
	StaticCallComputationCost     = 10000
	ReturnDataSizeComputationCost = 10
	ReturnDataCopyComputationCost = 40
	RevertComputationCost         = 0
	DelegateCallComputationCost   = 696
	StopComputationCost           = 0
	AddComputationCost            = 150
	MulComputationCost            = 200
	SubComputationCost            = 219
	DivComputationCost            = 404
	SdivComputationCost           = 739
	ModComputationCost            = 812
	SmodComputationCost           = 560
	AddmodComputationCost         = 3349
	MulmodComputationCost         = 4757
	ExpComputationCost            = 5000
	ShlComputationCost            = 1603
	ShrComputationCost            = 1346
	SarComputationCost            = 1815
	SignExtendComputationCost     = 481
	LtComputationCost             = 201
	GtComputationCost             = 264
	SltComputationCost            = 176
	SgtComputationCost            = 222
	EqComputationCost             = 220
	IszeroComputationCost         = 165
	AndComputationCost            = 288
	XorComputationCost            = 657
	OrComputationCost             = 160
	NotComputationCost            = 1289
	ByteComputationCost           = 589
	Sha3ComputationCost           = 2465
	AddressComputationCost        = 284
	BalanceComputationCost        = 1407
	OriginComputationCost         = 210
	CallerComputationCost         = 188
	CallValueComputationCost      = 149
	CallDataLoadComputationCost   = 596
	CallDataSizeComputationCost   = 194
	CallDataCopyComputationCost   = 100
	CodeSizeComputationCost       = 145
	CodeCopyComputationCost       = 898
	GasPriceComputationCost       = 131
	ExtCodeSizeComputationCost    = 1481
	ExtCodeCopyComputationCost    = 1000
	BlockHashComputationCost      = 500
	CoinbaseComputationCost       = 189
	TimestampComputationCost      = 265
	NumberComputationCost         = 202
	DifficultyComputationCost     = 180
	GasLimitComputationCost       = 166
	PopComputationCost            = 140
	MloadComputationCost          = 376
	MstoreComputationCost         = 288
	Mstore8ComputationCost        = 5142
	SloadComputationCost          = 835
	SstoreComputationCost         = 1548
	JumpComputationCost           = 253
	JumpiComputationCost          = 176
	PcComputationCost             = 147
	MsizeComputationCost          = 137
	GasComputationCost            = 230
	JumpDestComputationCost       = 10
	PushComputationCost           = 120
	Dup1ComputationCost           = 190
	Dup2ComputationCost           = 190
	Dup3ComputationCost           = 176
	Dup4ComputationCost           = 142
	Dup5ComputationCost           = 177
	Dup6ComputationCost           = 165
	Dup7ComputationCost           = 147
	Dup8ComputationCost           = 157
	Dup9ComputationCost           = 138
	Dup10ComputationCost          = 174
	Dup11ComputationCost          = 141
	Dup12ComputationCost          = 144
	Dup13ComputationCost          = 157
	Dup14ComputationCost          = 143
	Dup15ComputationCost          = 237
	Dup16ComputationCost          = 149
	Swap1ComputationCost          = 141
	Swap2ComputationCost          = 156
	Swap3ComputationCost          = 145
	Swap4ComputationCost          = 135
	Swap5ComputationCost          = 115
	Swap6ComputationCost          = 146
	Swap7ComputationCost          = 199
	Swap8ComputationCost          = 130
	Swap9ComputationCost          = 160
	Swap10ComputationCost         = 134
	Swap11ComputationCost         = 147
	Swap12ComputationCost         = 128
	Swap13ComputationCost         = 121
	Swap14ComputationCost         = 114
	Swap15ComputationCost         = 197
	Swap16ComputationCost         = 128
	Log0ComputationCost           = 100
	Log1ComputationCost           = 1000
	Log2ComputationCost           = 1000
	Log3ComputationCost           = 1000
	Log4ComputationCost           = 1000
	CreateComputationCost         = 2094
	CallComputationCost           = 5000
	CallCodeComputationCost       = 4000
	ReturnComputationCost         = 0
	SelfDestructComputationCost   = 0

	// Computation cost for precompiled contracts
	EcrecoverComputationCost                       = 113150
	Sha256PerWordComputationCost                   = 100
	Sha256BaseComputationCost                      = 1000
	Ripemd160PerWordComputationCost                = 10
	Ripemd160BaseComputationCost                   = 100
	IdentityPerWordComputationCost                 = 0
	IdentityBaseComputationCost                    = 0
	BigModExpPerGasComputationCost                 = 10
	BigModExpBaseComputationCost                   = 100
	Bn256AddComputationCost                        = 8000
	Bn256ScalarMulComputationCost                  = 100000
	Bn256ParingBaseComputationCost                 = 2000000
	Bn256ParingPerPointComputationCost             = 1000000
	BlobTxPointEvaluationPrecompileComputationCost = 2200000
	VMLogPerByteComputationCost                    = 0
	VMLogBaseComputationCost                       = 10
	FeePayerComputationCost                        = 10
	ValidateSenderPerSigComputationCost            = 180000
	ValidateSenderBaseComputationCost              = 10000

	// computation costs added at istanbulCompatible
	ChainIDComputationCost      = 120
	SelfBalanceComputationCost  = 374
	Blake2bBaseComputationCost  = 10000
	Blake2bScaleComputationCost = 10

	// computation cost added at londonCompatible
	BaseFeeComputationCost = 198

	// computation cost added at KoreCompatible
	RandomComputationCost = 1498

	// computation cost added at ShanghaiCompatible
	Push0ComputationCost = 80

	// computation cost added at CancunCompatible
	McopyComputationCost       = 250
	TloadComputationCost       = 220
	TstoreComputationCost      = 280
	BlobHashComptationCost     = 165
	BlobBaseFeeComputationCost = 120

	// opcode computation cost modification - istanbul
	AddmodComputationCostIstanbul = 1410
	MulmodComputationCostIstanbul = 1760
	ShlComputationCostIstanbul    = 478
	ShrComputationCostIstanbul    = 498
	SarComputationCostIstanbul    = 834
	XorComputationCostIstanbul    = 454
	NotComputationCostIstanbul    = 364

	// opcode computation cost codification - cancun
	SdivComputationCostCancun    = 360
	ModComputationCostCancun     = 320
	AddmodComputationCostCancun  = 360
	MulmodComputationCostCancun  = 700
	ExpComputationCostCancun     = 720
	Sha3ComputationCostCancun    = 560
	Mstore8ComputationCostCancun = 230

	SloadComputationCostCancun  = 2550
	SstoreComputationCostCancun = 2510
	Log1ComputationCostCancun   = 500
	Log2ComputationCostCancun   = 500
	Log3ComputationCostCancun   = 500
	Log4ComputationCostCancun   = 500

	OpcodeComputationCostLimit         = 100000000      // 100ms
	OpcodeComputationCostLimitCancun   = 150000000      // 150ms
	OpcodeComputationCostLimitInfinite = math.MaxUint64 // pass it to disable computation cost checks
)

const (
	VMLogToFile   = 0x1
	VMLogToStdout = 0x2
	VMLogToAll    = VMLogToFile | VMLogToStdout

	UpperGasLimit = uint64(999999999999)
)

const (
	Peb      = 1    // official notation 'peb'
	Kpeb     = 1e3  // official notation 'kpeb'
	Mpeb     = 1e6  // same
	Gpeb     = 1e9  // same
	Ston     = 1e9  // official notation 'ston'
	UKLAY    = 1e12 // official notation 'uKLAY'
	MiliKLAY = 1e15 // official notation 'mKLAY'
	KLAY     = 1e18 // same
	KKLAY    = 1e21 // official notation 'kKLAY'
	MKLAY    = 1e24 // same
	GKLAY    = 1e27 // same
)

const (
	// Block reward will be separated by three pieces and distributed
	RewardSliceCount      = 3
	RewardKip82SliceCount = 2
	// GovernanceConfig is stored in a cache which has below capacity
	GovernanceCacheLimit    = 512
	GovernanceIdxCacheLimit = 1000
	// The prefix for governance cache
	GovernanceCachePrefix = "governance"

	CheckpointInterval = 1024
)

const (
	// Governance Key
	GovernanceMode int = iota
	GoverningNode
	Epoch
	Policy
	CommitteeSize
	UnitPrice
	MintingAmount
	Ratio
	UseGiniCoeff
	DeferredTxFee
	MinimumStake
	AddValidator
	RemoveValidator
	StakeUpdateInterval
	ProposerRefreshInterval
	ConstTxGasHumanReadable
	CliqueEpoch
	Timeout
	LowerBoundBaseFee
	UpperBoundBaseFee
	GasTarget
	MaxBlockGasUsedForBaseFee
	BaseFeeDenominator
	GovParamContract
	Kip82Ratio
	DeriveShaImpl
)

const (
	GovernanceMode_None = iota
	GovernanceMode_Single
	GovernanceMode_Ballot
)

const (
	// Proposer policy
	// At the moment this is duplicated in istanbul/config.go, not to make a cross reference
	// TODO-Klatn-Governance: Find a way to manage below constants at single location
	RoundRobin = iota
	Sticky
	WeightedRandom
)

const (
	CallValueTransferGas  uint64 = 9000  // Paid for CALL when the value transfer is non-zero.                  // G_callvalue
	CallNewAccountGas     uint64 = 25000 // Paid for CALL when the destination address didn't exist prior.      // G_newaccount
	TxGas                 uint64 = 21000 // Per transaction not creating a contract. NOTE: Not payable on data of calls between transactions. // G_transaction
	TxGasContractCreation uint64 = 53000 // Per transaction that creates a contract. NOTE: Not payable on data of calls between transactions. // G_transaction + G_create
	TxDataZeroGas         uint64 = 4     // Per byte of data attached to a transaction that equals zero. NOTE: Not payable on data of calls between transactions. // G_txdatazero
	QuadCoeffDiv          uint64 = 512   // Divisor for the quadratic particle of the memory cost equation.
	SstoreSetGas          uint64 = 20000 // Once per SLOAD operation.                                           // G_sset
	LogDataGas            uint64 = 8     // Per byte in a LOG* operation's data.                                // G_logdata
	CallStipend           uint64 = 2300  // Free gas given at beginning of call.                                // G_callstipend
	Sha3Gas               uint64 = 30    // Once per SHA3 operation.                                                 // G_sha3
	Sha3WordGas           uint64 = 6     // Once per word of the SHA3 operation's data.                              // G_sha3word
	InitCodeWordGas       uint64 = 2     // Once per word of the init code when creating a contract.				 // G_InitCodeWord
	SstoreResetGas        uint64 = 5000  // Once per SSTORE operation if the zeroness changes from zero.             // G_sreset
	SstoreClearGas        uint64 = 5000  // Once per SSTORE operation if the zeroness doesn't change.                // G_sreset
	SstoreRefundGas       uint64 = 15000 // Once per SSTORE operation if the zeroness changes to zero.               // R_sclear

	// gasSStoreEIP2200
	SstoreSentryGasEIP2200            uint64 = 2300  // Minimum gas required to be present for an SSTORE call, not consumed
	SstoreSetGasEIP2200               uint64 = 20000 // Once per SSTORE operation from clean zero to non-zero
	SstoreResetGasEIP2200             uint64 = 5000  // Once per SSTORE operation from clean non-zero to something else
	SstoreClearsScheduleRefundEIP2200 uint64 = 15000 // Once per SSTORE operation for clearing an originally existing storage slot

	ColdAccountAccessCostEIP2929 = uint64(2600) // COLD_ACCOUNT_ACCESS_COST
	ColdSloadCostEIP2929         = uint64(2100) // COLD_SLOAD_COST
	WarmStorageReadCostEIP2929   = uint64(100)  // WARM_STORAGE_READ_COST

	// In EIP-2200: SstoreResetGas was 5000.
	// In EIP-2929: SstoreResetGas was changed to '5000 - COLD_SLOAD_COST'.
	// In EIP-3529: SSTORE_CLEARS_SCHEDULE is defined as SSTORE_RESET_GAS + ACCESS_LIST_STORAGE_KEY_COST
	// Which becomes: 5000 - 2100 + 1900 = 4800
	SstoreClearsScheduleRefundEIP3529 uint64 = SstoreResetGasEIP2200 - ColdSloadCostEIP2929 + TxAccessListStorageKeyGas

	JumpdestGas           uint64 = 1     // Once per JUMPDEST operation.
	CreateDataGas         uint64 = 200   // Paid per byte for a CREATE operation to succeed in placing code into state. // G_codedeposit
	ExpGas                uint64 = 10    // Once per EXP instruction
	LogGas                uint64 = 375   // Per LOG* operation.                                                          // G_log
	CopyGas               uint64 = 3     // Partial payment for COPY operations, multiplied by words copied, rounded up. // G_copy
	CreateGas             uint64 = 32000 // Once per CREATE operation & contract-creation transaction.               // G_create
	Create2Gas            uint64 = 32000 // Once per CREATE2 operation
	SelfdestructRefundGas uint64 = 24000 // Refunded following a selfdestruct operation.                                  // R_selfdestruct
	MemoryGas             uint64 = 3     // Times the address of the (highest referenced byte in memory + 1). NOTE: referencing happens on read, write and in instructions such as RETURN and CALL. // G_memory
	LogTopicGas           uint64 = 375   // Multiplied by the * of the LOG*, per LOG transaction. e.g. LOG0 incurs 0 * c_txLogTopicGas, LOG4 incurs 4 * c_txLogTopicGas.   // G_logtopic
	TxDataNonZeroGas      uint64 = 68    // Per byte of data attached to a transaction that is not equal to zero. NOTE: Not payable on data of calls between transactions. // G_txdatanonzero

	CallGas         uint64 = 700  // Static portion of gas for CALL-derivates after EIP 150 (Tangerine)
	ExtcodeSizeGas  uint64 = 700  // Cost of EXTCODESIZE after EIP 150 (Tangerine)
	SelfdestructGas uint64 = 5000 // Cost of SELFDESTRUCT post EIP 150 (Tangerine)

	// Istanbul version of BalanceGas, SloadGas, ExtcodeHash is added.
	BalanceGasEIP150             uint64 = 400 // Cost of BALANCE     before EIP 1884
	BalanceGasEIP1884            uint64 = 700 // Cost of BALANCE     after  EIP 1884 (part of Istanbul)
	SloadGasEIP150               uint64 = 200 // Cost of SLOAD       before EIP 1884
	SloadGasEIP1884              uint64 = 800 // Cost of SLOAD       after  EIP 1884 (part of Istanbul)
	SloadGasEIP2200              uint64 = 800 // Cost of SLOAD       after  EIP 2200 (part of Istanbul)
	ExtcodeHashGasConstantinople uint64 = 400 // Cost of EXTCODEHASH before EIP 1884
	ExtcodeHashGasEIP1884        uint64 = 700 // Cost of EXTCODEHASH after  EIP 1884 (part in Istanbul)

	// EXP has a dynamic portion depending on the size of the exponent
	// was set to 10 in Frontier, was raised to 50 during Eip158 (Spurious Dragon)
	ExpByte uint64 = 50

	// Extcodecopy has a dynamic AND a static cost. This represents only the
	// static portion of the gas. It was changed during EIP 150 (Tangerine)
	ExtcodeCopyBase uint64 = 700

	// CreateBySelfdestructGas is used when the refunded account is one that does
	// not exist. This logic is similar to call.
	// Introduced in Tangerine Whistle (Eip 150)
	CreateBySelfdestructGas uint64 = 25000

	// Fee for Service Chain
	// TODO-Klaytn-ServiceChain The following parameters should be fixed.
	// TODO-Klaytn-Governance The following parameters should be able to be modified by governance.
	TxChainDataAnchoringGas uint64 = 21000 // Per transaction anchoring chain data. NOTE: Not payable on data of calls between transactions. // G_transactionchaindataanchoring
	ChainDataAnchoringGas   uint64 = 100   // Per byte of anchoring chain data NOTE: Not payable on data of calls between transactions. // G_chaindataanchoring

	EcrecoverGas        uint64 = 3000 // Elliptic curve sender recovery gas price
	Sha256BaseGas       uint64 = 60   // Base price for a SHA256 operation
	Sha256PerWordGas    uint64 = 12   // Per-word price for a SHA256 operation
	Ripemd160BaseGas    uint64 = 600  // Base price for a RIPEMD160 operation
	Ripemd160PerWordGas uint64 = 120  // Per-word price for a RIPEMD160 operation
	IdentityBaseGas     uint64 = 15   // Base price for a data copy operation
	IdentityPerWordGas  uint64 = 3    // Per-work price for a data copy operation

	Bn256AddGasByzantium               uint64 = 500    // Gas needed for an elliptic curve addition
	Bn256AddGasIstanbul                uint64 = 150    // Istanbul version of gas needed for an elliptic curve addition
	Bn256ScalarMulGasByzantium         uint64 = 40000  // Gas needed for an elliptic curve scalar multiplication
	Bn256ScalarMulGasIstanbul          uint64 = 6000   // Istanbul version of gas needed for an elliptic curve scalar multiplication
	Bn256PairingBaseGasByzantium       uint64 = 100000 // Base price for an elliptic curve pairing check
	Bn256PairingBaseGasIstanbul        uint64 = 45000  // Istanbul version of base price for an elliptic curve pairing check
	Bn256PairingPerPointGasByzantium   uint64 = 80000  // Per-point price for an elliptic curve pairing check
	Bn256PairingPerPointGasIstanbul    uint64 = 34000  // Istanbul version of per-point price for an elliptic curve pairing check
	BlobTxPointEvaluationPrecompileGas uint64 = 50000  // Gas price for the point evaluation precompile.
	VMLogBaseGas                       uint64 = 100    // Base price for a VMLOG operation
	VMLogPerByteGas                    uint64 = 20     // Per-byte price for a VMLOG operation
	FeePayerGas                        uint64 = 300    // Gas needed for calculating the fee payer of the transaction in a smart contract.
	ValidateSenderGas                  uint64 = 5000   // Gas needed for validating the signature of a message.

	// The Refund Quotient is the cap on how much of the used gas can be refunded. Before EIP-3529,
	// up to half the consumed gas could be refunded. Redefined as 1/5th in EIP-3529
	RefundQuotient        uint64 = 2
	RefundQuotientEIP3529 uint64 = 5

	GasLimitBoundDivisor uint64 = 1024    // The bound divisor of the gas limit, used in update calculations.
	MinGasLimit          uint64 = 5000    // Minimum the gas limit may ever be.
	GenesisGasLimit      uint64 = 4712388 // Gas limit of the Genesis block.

	MaximumExtraDataSize uint64 = 32 // Maximum size extra data may be after Genesis.

	EpochDuration   uint64 = 30000 // Duration between proof-of-work epochs.
	CallCreateDepth uint64 = 1024  // Maximum depth of call/create stack.
	StackLimit      uint64 = 1024  // Maximum size of VM stack allowed.

	// eip-3860: limit and meter initcode (Shanghai)
	MaxCodeSize     = 24576           // Maximum bytecode to permit for a contract
	MaxInitCodeSize = 2 * MaxCodeSize // Maximum initcode to permit in a creation transaction and create instructions

	// istanbul BFT
	BFTMaximumExtraDataSize uint64 = 65 // Maximum size extra data may be after Genesis.

	// AccountKey
	// TODO-Klaytn: Need to fix below values.
	TxAccountCreationGasDefault uint64 = 0
	TxValidationGasDefault      uint64 = 0
	TxAccountCreationGasPerKey  uint64 = 20000 // WARNING: With integer overflow in mind before changing this value.
	TxValidationGasPerKey       uint64 = 15000 // WARNING: With integer overflow in mind before changing this value.

	// Fee for new tx types
	// TODO-Klaytn: Need to fix values
	TxGasAccountCreation       uint64 = 21000
	TxGasAccountUpdate         uint64 = 21000
	TxGasFeeDelegated          uint64 = 10000
	TxGasFeeDelegatedWithRatio uint64 = 15000
	TxGasCancel                uint64 = 21000

	// Network Id
	UnusedNetworkId              uint64 = 0
	AspenNetworkId               uint64 = 1000
	BaobabNetworkId              uint64 = 1001
	CypressNetworkId             uint64 = 8217
	ServiceChainDefaultNetworkId uint64 = 3000

	TxGasValueTransfer     uint64 = 21000
	TxGasContractExecution uint64 = 21000

	TxDataGas uint64 = 100

	TxAccessListAddressGas    uint64 = 2400 // Per address specified in EIP 2930 access list
	TxAccessListStorageKeyGas uint64 = 1900 // Per storage key specified in EIP 2930 access list

	// ZeroBaseFee exists for supporting Ethereum compatible data structure.
	ZeroBaseFee uint64 = 0
)

const (
	DefaultBlockGenerationInterval  = int64(1) // unit: seconds
	DefaultBlockGenerationTimeLimit = 250 * time.Millisecond
)

const (
	ReleaseNum   = 0
	VersionMajor = 1  // Major version component of the current release
	VersionMinor = 12 // Minor version component of the current release
	VersionPatch = 1  // Patch version component of the current release
)

const (
	// BloomBitsBlocks is the number of blocks a single bloom bit section vector
	// contains.
	BloomBitsBlocks uint64 = 4096
)

const (
	PasswordLength = 16
)