util: JSONify uint160 using LE instead of BE

closes #769

cli/wallet/nep5.go

@@ -179,7 +179,7 @@ func getMatchingTokenAux(get func(i int) *wallet.Token, n int, name string) (*wa
 	var count int
 	for i := 0; i < n; i++ {
 		t := get(i)
-		if t != nil && (t.Name == name || t.Symbol == name || t.Address == name || t.Hash.StringLE() == name) {
+		if t != nil && (t.Name == name || t.Symbol == name || t.Address() == name || t.Hash.StringLE() == name) {
 			if count == 1 {
 				printTokenInfo(token)
 				printTokenInfo(t)
@@ -240,7 +240,7 @@ func printTokenInfo(tok *wallet.Token) {
 	fmt.Printf("Symbol:\t%s\n", tok.Symbol)
 	fmt.Printf("Hash:\t%s\n", tok.Hash.StringLE())
 	fmt.Printf("Decimals: %d\n", tok.Decimals)
-	fmt.Printf("Address: %s\n", tok.Address)
+	fmt.Printf("Address: %s\n", tok.Address())
 }
 
 func printNEP5Info(ctx *cli.Context) error {

pkg/rpc/response/result/account_state.go

@@ -44,12 +44,9 @@ func NewAccountState(a *state.Account) AccountState {
 
 	sort.Sort(balances)
 
-	// reverse scriptHash to be consistent with other client
-	scriptHash := a.ScriptHash.Reverse()
-
 	return AccountState{
 		Version:    a.Version,
-		ScriptHash: scriptHash,
+		ScriptHash: a.ScriptHash,
 		IsFrozen:   a.IsFrozen,
 		Votes:      a.Votes,
 		Balances:   balances,

pkg/rpc/response/result/contract_state.go

@@ -31,9 +31,6 @@ type Properties struct {
 
 // NewContractState creates a new Contract wrapper.
 func NewContractState(c *state.Contract) ContractState {
-	// reverse scriptHash to be consistent with other client
-	scriptHash := c.ScriptHash().Reverse()
-
 	properties := Properties{
 		HasStorage:       c.HasStorage(),
 		HasDynamicInvoke: c.HasDynamicInvoke(),
@@ -42,7 +39,7 @@ func NewContractState(c *state.Contract) ContractState {
 
 	return ContractState{
 		Version:     0,
-		ScriptHash:  scriptHash,
+		ScriptHash:  c.ScriptHash(),
 		Script:      c.Script,
 		ParamList:   c.ParamList,
 		ReturnType:  c.ReturnType,

pkg/rpc/server/server_test.go

@@ -128,7 +128,7 @@ var rpcTestCases = map[string][]rpcTestCase{
 				res, ok := cs.(*result.ContractState)
 				require.True(t, ok)
 				assert.Equal(t, byte(0), res.Version)
-				assert.Equal(t, testContractHash, res.ScriptHash.StringBE())
+				assert.Equal(t, testContractHash, res.ScriptHash.StringLE())
 				assert.Equal(t, "0.99", res.CodeVersion)
 			},
 		},

pkg/smartcontract/parameter.go

@@ -63,7 +63,9 @@ func (p *Parameter) MarshalJSON() ([]byte, error) {
 		resultErr      error
 	)
 	switch p.Type {
-	case BoolType, StringType, Hash256Type, Hash160Type:
+	case Hash160Type:
+		resultRawValue, resultErr = json.Marshal(p.Value.(util.Uint160).Reverse()) // Hash160 should be marshaled in BE but default marshaler uses LE.
+	case BoolType, StringType, Hash256Type:
 		resultRawValue, resultErr = json.Marshal(p.Value)
 	case IntegerType:
 		val, ok := p.Value.(int64)
@@ -197,7 +199,7 @@ func (p *Parameter) UnmarshalJSON(data []byte) (err error) {
 		if err = json.Unmarshal(r.Value, &h); err != nil {
 			return
 		}
-		p.Value = h
+		p.Value = h.Reverse() // Hash160 should be marshaled in BE but default marshaler uses LE.
 	case Hash256Type:
 		var h util.Uint256
 		if err = json.Unmarshal(r.Value, &h); err != nil {

pkg/util/uint160.go

@@ -123,11 +123,11 @@ func (u *Uint160) UnmarshalJSON(data []byte) (err error) {
 		return err
 	}
 	js = strings.TrimPrefix(js, "0x")
-	*u, err = Uint160DecodeStringBE(js)
+	*u, err = Uint160DecodeStringLE(js)
 	return err
 }
 
 // MarshalJSON implements the json marshaller interface.
 func (u Uint160) MarshalJSON() ([]byte, error) {
-	return []byte(`"0x` + u.String() + `"`), nil
+	return []byte(`"0x` + u.StringLE() + `"`), nil
 }

pkg/util/uint160_test.go

@@ -9,8 +9,8 @@ import (
 )
 
 func TestUint160UnmarshalJSON(t *testing.T) {
-	str := "2d3b96ae1bcc5a585e075e3b81920210dec16302"
-	expected, err := Uint160DecodeStringBE(str)
+	str := "0263c1de100292813b5e075e585acc1bae963b2d"
+	expected, err := Uint160DecodeStringLE(str)
 	assert.NoError(t, err)
 
 	// UnmarshalJSON decodes hex-strings

pkg/wallet/token.go

@@ -1,22 +1,12 @@
 package wallet
 
 import (
-	"encoding/json"
-
 	"github.com/nspcc-dev/neo-go/pkg/encoding/address"
 	"github.com/nspcc-dev/neo-go/pkg/util"
 )
 
 // Token represents imported token contract.
 type Token struct {
-	Name     string
-	Hash     util.Uint160
-	Decimals int64
-	Symbol   string
-	Address  string
-}
-
-type tokenAux struct {
 	Name     string       `json:"name"`
 	Hash     util.Uint160 `json:"script_hash"`
 	Decimals int64        `json:"decimals"`
@@ -30,31 +20,10 @@ func NewToken(tokenHash util.Uint160, name, symbol string, decimals int64) *Toke
 		Hash:     tokenHash,
 		Decimals: decimals,
 		Symbol:   symbol,
-		Address:  address.Uint160ToString(tokenHash),
 	}
 }
 
-// MarshalJSON implements json.Marshaler interface.
-func (t *Token) MarshalJSON() ([]byte, error) {
-	m := &tokenAux{
-		Name:     t.Name,
-		Hash:     t.Hash.Reverse(), // address should be marshaled in LE but default marshaler uses BE.
-		Decimals: t.Decimals,
-		Symbol:   t.Symbol,
-	}
-	return json.Marshal(m)
-}
-
-// UnmarshalJSON implements json.Unmarshaler interface.
-func (t *Token) UnmarshalJSON(data []byte) error {
-	aux := new(tokenAux)
-	if err := json.Unmarshal(data, aux); err != nil {
-		return err
-	}
-	t.Name = aux.Name
-	t.Hash = aux.Hash.Reverse()
-	t.Decimals = aux.Decimals
-	t.Symbol = aux.Symbol
-	t.Address = address.Uint160ToString(t.Hash)
-	return nil
+// Address returns token address from hash
+func (t *Token) Address() string {
+	return address.Uint160ToString(t.Hash)
 }

pkg/wallet/token_test.go

@@ -18,7 +18,7 @@ func TestToken_MarshalJSON(t *testing.T) {
 	require.Equal(t, "NEP5", tok.Symbol)
 	require.EqualValues(t, 8, tok.Decimals)
 	require.Equal(t, h, tok.Hash)
-	require.Equal(t, "AYhE3Svuqdfh1RtzvE8hUhNR7HSpaSDFQg", tok.Address)
+	require.Equal(t, "AYhE3Svuqdfh1RtzvE8hUhNR7HSpaSDFQg", tok.Address())
 
 	data, err := json.Marshal(tok)
 	require.NoError(t, err)