Merge pull request #127 from hermeznetwork/feature/txsel-txsselection-v0

TxSelector GetL2TxSelection & GetL1L2TxSelection integrated with dbs

common/account.go

@@ -19,8 +19,50 @@ const (
 	maxNonceValue = 0xffffffffff
 	// maxBalanceBytes is the maximum bytes that can use the Account.Balance *big.Int
 	maxBalanceBytes = 24
+
+	idxBytesLen = 4
+	// maxIdxValue is the maximum value that Idx can have (32 bits: maxIdxValue=2**32-1)
+	maxIdxValue = 0xffffffff
+
+	// userThreshold determines the threshold from the User Idxs can be
+	userThreshold = 256
+	// IdxUserThreshold is a Idx type value that determines the threshold
+	// from the User Idxs can be
+	IdxUserThreshold = Idx(userThreshold)
 )
 
+// Idx represents the account Index in the MerkleTree
+type Idx uint32
+
+// Bytes returns a byte array representing the Idx
+func (idx Idx) Bytes() []byte {
+	var b [4]byte
+	binary.LittleEndian.PutUint32(b[:], uint32(idx))
+	return b[:]
+}
+
+// BigInt returns a *big.Int representing the Idx
+func (idx Idx) BigInt() *big.Int {
+	return big.NewInt(int64(idx))
+}
+
+// IdxFromBytes returns Idx from a byte array
+func IdxFromBytes(b []byte) (Idx, error) {
+	if len(b) != idxBytesLen {
+		return 0, fmt.Errorf("can not parse Idx, bytes len %d, expected 4", len(b))
+	}
+	idx := binary.LittleEndian.Uint32(b[:4])
+	return Idx(idx), nil
+}
+
+// IdxFromBigInt converts a *big.Int to Idx type
+func IdxFromBigInt(b *big.Int) (Idx, error) {
+	if b.Int64() > maxIdxValue {
+		return 0, ErrNumOverflow
+	}
+	return Idx(uint32(b.Int64())), nil
+}
+
 // Account is a struct that gives information of the holdings of an address and a specific token. Is the data structure that generates the Value stored in the leaf of the MerkleTree
 type Account struct {
 	TokenID   TokenID

common/accountcreationauths.go

@@ -11,6 +11,6 @@ import (
 type AccountCreationAuth struct {
 	Timestamp time.Time
 	EthAddr   ethCommon.Address
-	BJJ       babyjub.PublicKey
+	BJJ       *babyjub.PublicKey
 	Signature []byte
 }

common/tx.go

@@ -1,49 +1,9 @@
 package common
 
 import (
-	"encoding/binary"
-	"fmt"
 	"math/big"
 )
 
-const (
-	idxBytesLen = 4
-	// maxIdxValue is the maximum value that Idx can have (32 bits: maxIdxValue=2**32-1)
-	maxIdxValue = 0xffffffff
-)
-
-// Idx represents the account Index in the MerkleTree
-type Idx uint32
-
-// Bytes returns a byte array representing the Idx
-func (idx Idx) Bytes() []byte {
-	var b [4]byte
-	binary.LittleEndian.PutUint32(b[:], uint32(idx))
-	return b[:]
-}
-
-// BigInt returns a *big.Int representing the Idx
-func (idx Idx) BigInt() *big.Int {
-	return big.NewInt(int64(idx))
-}
-
-// IdxFromBytes returns Idx from a byte array
-func IdxFromBytes(b []byte) (Idx, error) {
-	if len(b) != idxBytesLen {
-		return 0, fmt.Errorf("can not parse Idx, bytes len %d, expected 4", len(b))
-	}
-	idx := binary.LittleEndian.Uint32(b[:4])
-	return Idx(idx), nil
-}
-
-// IdxFromBigInt converts a *big.Int to Idx type
-func IdxFromBigInt(b *big.Int) (Idx, error) {
-	if b.Int64() > maxIdxValue {
-		return 0, ErrNumOverflow
-	}
-	return Idx(uint32(b.Int64())), nil
-}
-
 // TxID is the identifier of a Hermez network transaction
 type TxID Hash // Hash is a guess