From 37cb60a0b5d929f4a677cbe20d6f7af01855daf8 Mon Sep 17 00:00:00 2001
From: Anna Shaleva <shaleva.ann@nspcc.ru>
Date: Thu, 26 Mar 2020 16:34:54 +0300
Subject: [PATCH] compiler/interop: add missing methods to interop.Iterator

Add Next() and Value() to interop.Iterator and corresponding syscalls to
compiler
---
 pkg/compiler/syscall.go          |  2 ++
 pkg/interop/iterator/iterator.go | 11 +++++++++++
 2 files changed, 13 insertions(+)

diff --git a/pkg/compiler/syscall.go b/pkg/compiler/syscall.go
index 62e24f4c9..01234955b 100644
--- a/pkg/compiler/syscall.go
+++ b/pkg/compiler/syscall.go
@@ -86,6 +86,8 @@ var syscalls = map[string]map[string]string{
 		"Create": "Neo.Iterator.Create",
 		"Key":    "Neo.Iterator.Key",
 		"Keys":   "Neo.Iterator.Keys",
+		"Next":   "Neo.Iterator.Next",
+		"Value":  "Neo.Iterator.Value",
 		"Values": "Neo.Iterator.Values",
 	},
 }
diff --git a/pkg/interop/iterator/iterator.go b/pkg/interop/iterator/iterator.go
index 2dd17d2eb..84e85310e 100644
--- a/pkg/interop/iterator/iterator.go
+++ b/pkg/interop/iterator/iterator.go
@@ -22,6 +22,17 @@ func Keys(it Iterator) []interface{} {
 	return nil
 }
 
+// Next advances the iterator, return true if it is was successful
+// and false otherwise.
+func Next(it Iterator) bool {
+	return true
+}
+
+// Value returns the current iterator value.
+func Value(it Iterator) interface{} {
+	return nil
+}
+
 // Values returns the iterator values.
 func Values(it Iterator) []interface{} {
 	return nil