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params.go
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params.go
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package types
import (
"errors"
"fmt"
"gopkg.in/yaml.v2"
sdk "github.com/cosmos/cosmos-sdk/types"
paramtypes "github.com/cosmos/cosmos-sdk/x/params/types"
)
var (
DefaultMinTotalSupply = sdk.NewInt(100) // One hundred
DefaultMaxTotalSupply = sdk.NewInt(1_000_000_000_000_000) // One Quadrillion
DefaultCampaignCreationFee = sdk.Coins(nil) // EmptyCoins
KeyTotalSupplyRange = []byte("TotalSupplyRange")
KeyCampaignCreationFee = []byte("CampaignCreationFee")
)
// ParamKeyTable returns the parameter key table.
func ParamKeyTable() paramtypes.KeyTable {
return paramtypes.NewKeyTable().RegisterParamSet(&Params{})
}
// NewTotalSupplyRange creates a new TotalSupplyRange instance
func NewTotalSupplyRange(minTotalSupply, maxTotalSupply sdk.Int) TotalSupplyRange {
return TotalSupplyRange{
MinTotalSupply: minTotalSupply,
MaxTotalSupply: maxTotalSupply,
}
}
// NewParams creates a new Params instance
func NewParams(minTotalSupply, maxTotalSupply sdk.Int, campaignCreationFee sdk.Coins) Params {
return Params{
TotalSupplyRange: NewTotalSupplyRange(minTotalSupply, maxTotalSupply),
CampaignCreationFee: campaignCreationFee,
}
}
// DefaultParams returns default campaign parameters
func DefaultParams() Params {
return NewParams(DefaultMinTotalSupply, DefaultMaxTotalSupply, DefaultCampaignCreationFee)
}
// String implements stringer interface
func (p Params) String() string {
out, _ := yaml.Marshal(p)
return string(out)
}
// ParamSetPairs returns the parameter set pairs.
func (p *Params) ParamSetPairs() paramtypes.ParamSetPairs {
return paramtypes.ParamSetPairs{
paramtypes.NewParamSetPair(KeyTotalSupplyRange, &p.TotalSupplyRange, validateTotalSupplyRange),
paramtypes.NewParamSetPair(KeyCampaignCreationFee, &p.CampaignCreationFee, validateCampaignCreationFee),
}
}
// ValidateBasic performs basic validation on campaign parameters.
func (p Params) ValidateBasic() error {
if err := validateTotalSupplyRange(p.TotalSupplyRange); err != nil {
return err
}
return p.CampaignCreationFee.Validate()
}
func validateTotalSupplyRange(i interface{}) error {
v, ok := i.(TotalSupplyRange)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
if err := v.ValidateBasic(); err != nil {
return errors.New(err.Error())
}
return nil
}
func validateCampaignCreationFee(i interface{}) error {
v, ok := i.(sdk.Coins)
if !ok {
return fmt.Errorf("invalid parameter type: %T", i)
}
return v.Validate()
}