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params.go
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params.go
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package types
import (
"fmt"
"github.com/EscanBE/evermint/v12/constants"
"math/big"
"github.com/ethereum/go-ethereum/core/vm"
"github.com/ethereum/go-ethereum/params"
sdk "github.com/cosmos/cosmos-sdk/types"
)
var (
// DefaultEVMDenom defines the default EVM denomination on this EVM chain
DefaultEVMDenom = constants.BaseDenom
// DefaultAllowUnprotectedTxs rejects all unprotected txs (i.e false)
DefaultAllowUnprotectedTxs = false
// DefaultEnableCreate enables contract creation (i.e true)
DefaultEnableCreate = true
// DefaultEnableCall enables contract calls (i.e true)
DefaultEnableCall = true
// DefaultExtraEIPs defines the list of all EIPs that are enabled by default
DefaultExtraEIPs = []int64{3855}
)
// NewParams creates a new Params instance
func NewParams(evmDenom string, allowUnprotectedTxs, enableCreate, enableCall bool, config ChainConfig, extraEIPs []int64) Params {
return Params{
EvmDenom: evmDenom,
AllowUnprotectedTxs: allowUnprotectedTxs,
EnableCreate: enableCreate,
EnableCall: enableCall,
ExtraEIPs: extraEIPs,
ChainConfig: config,
}
}
// DefaultParams returns default evm parameters
// ExtraEIPs is empty to prevent overriding the latest hard fork instruction set
func DefaultParams() Params {
return Params{
EvmDenom: DefaultEVMDenom,
EnableCreate: DefaultEnableCreate,
EnableCall: DefaultEnableCall,
ChainConfig: DefaultChainConfig(),
ExtraEIPs: DefaultExtraEIPs,
AllowUnprotectedTxs: DefaultAllowUnprotectedTxs,
}
}
// Validate performs basic validation on evm parameters.
func (p Params) Validate() error {
if err := validateEVMDenom(p.EvmDenom); err != nil {
return err
}
if err := validateEIPs(p.ExtraEIPs); err != nil {
return err
}
if err := validateBool(p.EnableCall); err != nil {
return err
}
if err := validateBool(p.EnableCreate); err != nil {
return err
}
if err := validateBool(p.AllowUnprotectedTxs); err != nil {
return err
}
return validateChainConfig(p.ChainConfig)
}
// EIPs returns the ExtraEIPS as a int slice
func (p Params) EIPs() []int {
eips := make([]int, len(p.ExtraEIPs))
for i, eip := range p.ExtraEIPs {
eips[i] = int(eip)
}
return eips
}
func validateEVMDenom(i interface{}) error {
denom, ok := i.(string)
if !ok {
return fmt.Errorf("invalid parameter EVM denom type: %T", i)
}
return sdk.ValidateDenom(denom)
}
func validateBool(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateEIPs(i interface{}) error {
eips, ok := i.([]int64)
if !ok {
return fmt.Errorf("invalid EIP slice type: %T", i)
}
for _, eip := range eips {
if !vm.ValidEip(int(eip)) {
return fmt.Errorf("EIP %d is not activateable, valid EIPS are: %s", eip, vm.ActivateableEips())
}
}
return nil
}
func validateChainConfig(i interface{}) error {
cfg, ok := i.(ChainConfig)
if !ok {
return fmt.Errorf("invalid chain config type: %T", i)
}
return cfg.Validate()
}
// IsLondon returns if london hardfork is enabled.
func IsLondon(ethConfig *params.ChainConfig, height int64) bool {
return ethConfig.IsLondon(big.NewInt(height))
}