forked from cerc-io/laconicd-deprecated
58 lines
2.0 KiB
Go
58 lines
2.0 KiB
Go
// Copyright 2021 Evmos Foundation
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// This file is part of Evmos' Ethermint library.
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//
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// The Ethermint library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The Ethermint library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the Ethermint library. If not, see https://github.com/evmos/ethermint/blob/main/LICENSE
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package types
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import (
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"bytes"
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errorsmod "cosmossdk.io/errors"
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errortypes "github.com/cosmos/cosmos-sdk/types/errors"
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"github.com/ethereum/go-ethereum/common"
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)
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// IsEmptyHash returns true if the hash corresponds to an empty ethereum hex hash.
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func IsEmptyHash(hash string) bool {
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return bytes.Equal(common.HexToHash(hash).Bytes(), common.Hash{}.Bytes())
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}
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// IsZeroAddress returns true if the address corresponds to an empty ethereum hex address.
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func IsZeroAddress(address string) bool {
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return bytes.Equal(common.HexToAddress(address).Bytes(), common.Address{}.Bytes())
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}
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// ValidateAddress returns an error if the provided string is either not a hex formatted string address
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func ValidateAddress(address string) error {
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if !common.IsHexAddress(address) {
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return errorsmod.Wrapf(
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errortypes.ErrInvalidAddress, "address '%s' is not a valid ethereum hex address",
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address,
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)
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}
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return nil
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}
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// ValidateNonZeroAddress returns an error if the provided string is not a hex
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// formatted string address or is equal to zero
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func ValidateNonZeroAddress(address string) error {
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if IsZeroAddress(address) {
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return errorsmod.Wrapf(
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errortypes.ErrInvalidAddress, "address '%s' must not be zero",
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address,
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)
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}
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return ValidateAddress(address)
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}
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