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abi.go
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abi.go
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// Copyright 2014 The go-ethereum Authors
// This file is part of the go-ethereum library.
//
// The go-ethereum library is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// The go-ethereum library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
package common
import (
"math/big"
)
func AddressToAbi(address Address) []byte {
return LeftPadBytes(address.Bytes(), 32)
}
func AmountToAbi(amount *big.Int) []byte {
return LeftPadBytes(amount.Bytes(), 32)
}
// Generates ABI for a given method and its arguments.
func GetEncodedAbi(methodSelector []byte, varAbis [][]byte) []byte {
encodedVarsAbiByteSize := 0
for _, varAbi := range varAbis {
encodedVarsAbiByteSize += len(varAbi)
}
encodedAbi := make([]byte, len(methodSelector)+encodedVarsAbiByteSize)
copy(encodedAbi[0:len(methodSelector)], methodSelector[:])
copyCursor := len(methodSelector)
for _, varAbi := range varAbis {
copy(encodedAbi[copyCursor:copyCursor+len(varAbi)], varAbi[:])
copyCursor += len(varAbi)
}
return encodedAbi
}