From aae312d408fff87eaef69a51159b5713e8c6b54a Mon Sep 17 00:00:00 2001
From: Evgenii Stratonikov <evgeniy@nspcc.ru>
Date: Tue, 16 Jun 2020 11:00:19 +0300
Subject: [PATCH] core,vm: adjust prices for iterator/enumerator syscalls

Closes #1027.
---
 pkg/core/interops.go | 18 +++++++++---------
 pkg/vm/interop.go    | 18 +++++++++---------
 2 files changed, 18 insertions(+), 18 deletions(-)

diff --git a/pkg/core/interops.go b/pkg/core/interops.go
index 12e7761cb..326b5f3c4 100644
--- a/pkg/core/interops.go
+++ b/pkg/core/interops.go
@@ -92,19 +92,19 @@ var systemInterops = []interop.Function{
 		AllowedTriggers: trigger.Application, RequiredFlags: smartcontract.AllowModifyStates},
 	{Name: "System.Contract.Update", Func: contractUpdate, Price: 0,
 		AllowedTriggers: trigger.Application, RequiredFlags: smartcontract.AllowModifyStates},
-	{Name: "System.Enumerator.Concat", Func: enumerator.Concat, Price: 1},
-	{Name: "System.Enumerator.Create", Func: enumerator.Create, Price: 1},
-	{Name: "System.Enumerator.Next", Func: enumerator.Next, Price: 1},
-	{Name: "System.Enumerator.Value", Func: enumerator.Value, Price: 1},
+	{Name: "System.Enumerator.Concat", Func: enumerator.Concat, Price: 400},
+	{Name: "System.Enumerator.Create", Func: enumerator.Create, Price: 400},
+	{Name: "System.Enumerator.Next", Func: enumerator.Next, Price: 1000000},
+	{Name: "System.Enumerator.Value", Func: enumerator.Value, Price: 400},
 	{Name: "System.ExecutionEngine.GetCallingScriptHash", Func: engineGetCallingScriptHash, Price: 1},
 	{Name: "System.ExecutionEngine.GetEntryScriptHash", Func: engineGetEntryScriptHash, Price: 1},
 	{Name: "System.ExecutionEngine.GetExecutingScriptHash", Func: engineGetExecutingScriptHash, Price: 1},
 	{Name: "System.ExecutionEngine.GetScriptContainer", Func: engineGetScriptContainer, Price: 1},
-	{Name: "System.Iterator.Concat", Func: iterator.Concat, Price: 1},
-	{Name: "System.Iterator.Create", Func: iterator.Create, Price: 1},
-	{Name: "System.Iterator.Key", Func: iterator.Key, Price: 1},
-	{Name: "System.Iterator.Keys", Func: iterator.Keys, Price: 1},
-	{Name: "System.Iterator.Values", Func: iterator.Values, Price: 1},
+	{Name: "System.Iterator.Concat", Func: iterator.Concat, Price: 400},
+	{Name: "System.Iterator.Create", Func: iterator.Create, Price: 400},
+	{Name: "System.Iterator.Key", Func: iterator.Key, Price: 400},
+	{Name: "System.Iterator.Keys", Func: iterator.Keys, Price: 400},
+	{Name: "System.Iterator.Values", Func: iterator.Values, Price: 400},
 	{Name: "System.Runtime.CheckWitness", Func: runtime.CheckWitness, Price: 200, RequiredFlags: smartcontract.AllowStates},
 	{Name: "System.Runtime.GetTime", Func: runtimeGetTime, Price: 1,
 		AllowedTriggers: trigger.Application, RequiredFlags: smartcontract.AllowStates},
diff --git a/pkg/vm/interop.go b/pkg/vm/interop.go
index 70526f85a..7020124bb 100644
--- a/pkg/vm/interop.go
+++ b/pkg/vm/interop.go
@@ -44,23 +44,23 @@ var defaultVMInterops = []interopIDFuncPrice{
 	{emit.InteropNameToID([]byte("System.Runtime.Notify")),
 		InteropFuncPrice{Func: runtimeNotify, Price: 1}},
 	{emit.InteropNameToID([]byte("System.Enumerator.Create")),
-		InteropFuncPrice{Func: EnumeratorCreate, Price: 1}},
+		InteropFuncPrice{Func: EnumeratorCreate, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Enumerator.Next")),
-		InteropFuncPrice{Func: EnumeratorNext, Price: 1}},
+		InteropFuncPrice{Func: EnumeratorNext, Price: 1000000}},
 	{emit.InteropNameToID([]byte("System.Enumerator.Concat")),
-		InteropFuncPrice{Func: EnumeratorConcat, Price: 1}},
+		InteropFuncPrice{Func: EnumeratorConcat, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Enumerator.Value")),
-		InteropFuncPrice{Func: EnumeratorValue, Price: 1}},
+		InteropFuncPrice{Func: EnumeratorValue, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Iterator.Create")),
-		InteropFuncPrice{Func: IteratorCreate, Price: 1}},
+		InteropFuncPrice{Func: IteratorCreate, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Iterator.Concat")),
-		InteropFuncPrice{Func: IteratorConcat, Price: 1}},
+		InteropFuncPrice{Func: IteratorConcat, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Iterator.Key")),
-		InteropFuncPrice{Func: IteratorKey, Price: 1}},
+		InteropFuncPrice{Func: IteratorKey, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Iterator.Keys")),
-		InteropFuncPrice{Func: IteratorKeys, Price: 1}},
+		InteropFuncPrice{Func: IteratorKeys, Price: 400}},
 	{emit.InteropNameToID([]byte("System.Iterator.Values")),
-		InteropFuncPrice{Func: IteratorValues, Price: 1}},
+		InteropFuncPrice{Func: IteratorValues, Price: 400}},
 }
 
 func getDefaultVMInterop(id uint32) *InteropFuncPrice {