From af212f496e243f3d54ffea0d16cd09fdce58e60d Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Fri, 30 Aug 2019 19:13:19 +0300
Subject: [PATCH] transaction: implement encoding for state

---
 pkg/core/transaction/state.go            | 11 +++++++++++
 pkg/core/transaction/state_descriptor.go |  7 ++++++-
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/pkg/core/transaction/state.go b/pkg/core/transaction/state.go
index 8a68c92e5..8c37d822a 100644
--- a/pkg/core/transaction/state.go
+++ b/pkg/core/transaction/state.go
@@ -29,6 +29,17 @@ func (tx *StateTX) DecodeBinary(r io.Reader) error {
 
 // EncodeBinary implements the Payload interface.
 func (tx *StateTX) EncodeBinary(w io.Writer) error {
+	bw := util.BinWriter{W: w}
+	bw.WriteVarUint(uint64(len(tx.Descriptors)))
+	if bw.Err != nil {
+		return bw.Err
+	}
+	for _, desc := range tx.Descriptors {
+		err := desc.EncodeBinary(w)
+		if err != nil {
+			return err
+		}
+	}
 	return nil
 }
 
diff --git a/pkg/core/transaction/state_descriptor.go b/pkg/core/transaction/state_descriptor.go
index 770bb6c53..a9447c9db 100644
--- a/pkg/core/transaction/state_descriptor.go
+++ b/pkg/core/transaction/state_descriptor.go
@@ -37,7 +37,12 @@ func (s *StateDescriptor) DecodeBinary(r io.Reader) error {
 
 // EncodeBinary implements the Payload interface.
 func (s *StateDescriptor) EncodeBinary(w io.Writer) error {
-	return nil
+	bw := util.BinWriter{W: w}
+	bw.WriteLE(s.Type)
+	bw.WriteBytes(s.Key)
+	bw.WriteBytes(s.Value)
+	bw.WriteString(s.Field)
+	return bw.Err
 }
 
 func (s *StateDescriptor) Size() int {