package common import ( "encoding/binary" "math/big" "time" ethCommon "github.com/ethereum/go-ethereum/common" ) // Token is a struct that represents an Ethereum token that is supported in Hermez network type Token struct { TokenID TokenID EthAddr ethCommon.Address Name string Symbol string Decimals uint64 EthTxHash ethCommon.Hash // Ethereum TxHash in which this token was registered EthBlockNum uint64 // Ethereum block number in which this token was registered } // TokenInfo provides the price of the token in USD type TokenInfo struct { TokenID uint32 Value float64 LastUpdated time.Time } // TokenID is the unique identifier of the token, as set in the smart contract type TokenID uint32 // current implementation supports up to 2^32 tokens // Bytes returns a byte array of length 4 representing the TokenID func (t TokenID) Bytes() []byte { var tokenIDBytes [4]byte binary.LittleEndian.PutUint32(tokenIDBytes[:], uint32(t)) return tokenIDBytes[:] } // BigInt returns the *big.Int representation of the TokenID func (t TokenID) BigInt() *big.Int { return big.NewInt(int64(t)) }