/
token_pair.go
56 lines (45 loc) · 1.5 KB
/
token_pair.go
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package types
import (
"fmt"
sdk "github.com/cosmos/cosmos-sdk/types"
"github.com/ethereum/go-ethereum/common"
"github.com/tendermint/tendermint/crypto/tmhash"
fxtypes "github.com/functionx/fx-core/v5/types"
)
// NewTokenPair returns an instance of TokenPair
func NewTokenPair(erc20Address common.Address, denom string, enabled bool, contractOwner Owner) TokenPair {
return TokenPair{
Erc20Address: erc20Address.String(),
Denom: denom,
Enabled: enabled,
ContractOwner: contractOwner,
}
}
// GetID returns the SHA256 hash of the ERC20 address and denomination
func (tp *TokenPair) GetID() []byte {
return tmhash.Sum([]byte(fmt.Sprintf("%s|%s", tp.Erc20Address, tp.Denom)))
}
// GetERC20Contract casts the hex string address of the ERC20 to common.Address
func (tp *TokenPair) GetERC20Contract() common.Address {
return common.HexToAddress(tp.Erc20Address)
}
// Validate performs a stateless validation of a TokenPair
func (tp *TokenPair) Validate() error {
if err := sdk.ValidateDenom(tp.Denom); err != nil {
return err
}
if err := fxtypes.ValidateEthereumAddress(tp.Erc20Address); err != nil {
return err
}
return nil
}
// IsNativeCoin returns true if the owner of the ERC20 contract is the
// erc20 module account
func (tp *TokenPair) IsNativeCoin() bool {
return tp.ContractOwner == OWNER_MODULE
}
// IsNativeERC20 returns true if the owner of the ERC20 contract not the
// erc20 module account
func (tp *TokenPair) IsNativeERC20() bool {
return tp.ContractOwner == OWNER_EXTERNAL
}