compiler: implement RoleManagement contract wrapper

pkg/compiler/native_test.go

@@ -5,9 +5,16 @@ import (
 
 	"github.com/nspcc-dev/neo-go/pkg/core/native"
 	"github.com/nspcc-dev/neo-go/pkg/interop/native/nameservice"
+	"github.com/nspcc-dev/neo-go/pkg/interop/native/roles"
 	"github.com/stretchr/testify/require"
 )
 
+func TestRoleManagementRole(t *testing.T) {
+	require.EqualValues(t, native.RoleOracle, roles.Oracle)
+	require.EqualValues(t, native.RoleStateValidator, roles.StateValidator)
+	require.EqualValues(t, native.RoleP2PNotary, roles.P2PNotary)
+}
+
 func TestNameServiceRecordType(t *testing.T) {
 	require.EqualValues(t, native.RecordTypeA, nameservice.TypeA)
 	require.EqualValues(t, native.RecordTypeCNAME, nameservice.TypeCNAME)

pkg/interop/native/roles/roles.go

@@ -0,0 +1,31 @@
+package roles
+
+import (
+	"github.com/nspcc-dev/neo-go/pkg/interop"
+	"github.com/nspcc-dev/neo-go/pkg/interop/contract"
+)
+
+// Hash represents RoleManagement contract hash.
+const Hash = "\x02\x8b\x00\x50\x70\xb6\x0d\xf1\xc8\xe2\x09\x78\x7b\x49\xce\xbb\x71\x14\x7b\x59"
+
+// Role represents node role.
+type Role byte
+
+// Various node roles.
+const (
+	StateValidator Role = 4
+	Oracle         Role = 8
+	P2PNotary      Role = 128
+)
+
+// GetDesignatedByRole represents `getDesignatedByRole` method of RoleManagement native contract.
+func GetDesignatedByRole(r Role, height uint32) []interop.PublicKey {
+	return contract.Call(interop.Hash160(Hash), "getDesignatedByRole",
+		contract.ReadStates, r, height).([]interop.PublicKey)
+}
+
+// DesignateAsRole represents `designateAsRole` method of RoleManagement native contract.
+func DesignateAsRole(r Role, pubs []interop.PublicKey) {
+	contract.Call(interop.Hash160(Hash), "designateAsRole",
+		contract.WriteStates, r, pubs)
+}