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params.go
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params.go
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package types
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
// Parameter store key
var (
DefaultEnableRevenue = true
DefaultDeveloperShares = sdk.NewDecWithPrec(50, 2) // 50%
// Cost for executing `crypto.CreateAddress` must be at least 36 gas for the
// contained keccak256(word) operation
DefaultAddrDerivationCostCreate = uint64(50)
ParamStoreKeyEnableRevenue = []byte("EnableRevenue")
ParamStoreKeyDeveloperShares = []byte("DeveloperShares")
ParamStoreKeyAddrDerivationCostCreate = []byte("AddrDerivationCostCreate")
)
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewParams creates a new Params object
func NewParams(
enableRevenue bool,
developerShares sdk.Dec,
addrDerivationCostCreate uint64,
) Params {
return Params{
EnableRevenue: enableRevenue,
DeveloperShares: developerShares,
AddrDerivationCostCreate: addrDerivationCostCreate,
}
}
func DefaultParams() Params {
return Params{
EnableRevenue: DefaultEnableRevenue,
DeveloperShares: DefaultDeveloperShares,
AddrDerivationCostCreate: DefaultAddrDerivationCostCreate,
}
}
// ParamSetPairs returns the parameter set pairs.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(ParamStoreKeyEnableRevenue, &p.EnableRevenue, validateBool),
paramtypes.NewParamSetPair(ParamStoreKeyDeveloperShares, &p.DeveloperShares, validateShares),
paramtypes.NewParamSetPair(ParamStoreKeyAddrDerivationCostCreate, &p.AddrDerivationCostCreate, validateUint64),
}
}
func validateUint64(i interface{}) error {
_, ok := i.(uint64)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateBool(i interface{}) error {
_, ok := i.(bool)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return nil
}
func validateShares(i interface{}) error {
v, ok := i.(sdk.Dec)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if v.IsNil() {
return fmt.Errorf("invalid parameter: nil")
}
if v.IsNegative() {
return fmt.Errorf("value cannot be negative: %T", i)
}
if v.GT(sdk.OneDec()) {
return fmt.Errorf("value cannot be greater than 1: %T", i)
}
return nil
}
func (p Params) Validate() error {
if err := validateBool(p.EnableRevenue); err != nil {
return err
}
if err := validateShares(p.DeveloperShares); err != nil {
return err
}
return validateUint64(p.AddrDerivationCostCreate)
}