rpc/request: add (*Param).GetUint160FromAddressOrHex()

Allow to get address from both representations.

pkg/rpc/request/param.go

@@ -154,6 +154,16 @@ func (p *Param) GetUint160FromAddress() (util.Uint160, error) {
 	return address.StringToUint160(s)
 }
 
+// GetUint160FromAddressOrHex returns Uint160 value of the parameter that was
+// supplied either as raw hex or as an address.
+func (p *Param) GetUint160FromAddressOrHex() (util.Uint160, error) {
+	u, err := p.GetUint160FromHex()
+	if err == nil {
+		return u, err
+	}
+	return p.GetUint160FromAddress()
+}
+
 // GetFuncParam returns current parameter as a function call parameter.
 func (p *Param) GetFuncParam() (FuncParam, error) {
 	if p == nil {

pkg/rpc/request/param_test.go

@@ -166,6 +166,25 @@ func TestParamGetUint160FromAddress(t *testing.T) {
 	require.NotNil(t, err)
 }
 
+func TestParam_GetUint160FromAddressOrHex(t *testing.T) {
+	in := "AK2nJJpJr6o664CWJKi1QRXjqeic2zRp8y"
+	inHex, _ := address.StringToUint160(in)
+
+	t.Run("Address", func(t *testing.T) {
+		p := Param{StringT, in}
+		u, err := p.GetUint160FromAddressOrHex()
+		require.NoError(t, err)
+		require.Equal(t, inHex, u)
+	})
+
+	t.Run("Hex", func(t *testing.T) {
+		p := Param{StringT, inHex.StringLE()}
+		u, err := p.GetUint160FromAddressOrHex()
+		require.NoError(t, err)
+		require.Equal(t, inHex, u)
+	})
+}
+
 func TestParamGetFuncParam(t *testing.T) {
 	fp := FuncParam{
 		Type: smartcontract.StringType,