From e32d0e01afb4c89427c7ee0151f0723c4da998a4 Mon Sep 17 00:00:00 2001
From: Roman Khimov <roman@nspcc.ru>
Date: Mon, 18 May 2020 18:33:55 +0300
Subject: [PATCH] compiler|transaction: remove transaction.GetUnspentCoins
 support

It's useless. Even though there is Neo.Transaction.GetUnspentCoins syscall
that can be used, its return type is an interop structure that's not accepted
by any other syscall, so you can't really do anything with it. And there is no
such interface for the .net Framework.
---
 docs/runtime.md                        |  6 ------
 pkg/compiler/syscall.go                | 15 +++++++--------
 pkg/interop/transaction/transaction.go |  6 ------
 3 files changed, 7 insertions(+), 20 deletions(-)

diff --git a/docs/runtime.md b/docs/runtime.md
index e98b3af20..7f047db2f 100644
--- a/docs/runtime.md
+++ b/docs/runtime.md
@@ -504,12 +504,6 @@ GetReferences(t Transacfion) interface{}
 ```
 Returns the references of the given transaction.
 
-#### GetUnspentCoins
-```
-GetUnspentCoins(t Transacfion) interface{} 
-```
-Returns the unspent coins of the given transaction.
-
 #### GetOutputs
 ```
 GetOutputs(t Transacfion) []output.Output 
diff --git a/pkg/compiler/syscall.go b/pkg/compiler/syscall.go
index 985a96509..16b6b26b8 100644
--- a/pkg/compiler/syscall.go
+++ b/pkg/compiler/syscall.go
@@ -65,14 +65,13 @@ var syscalls = map[string]map[string]string{
 		"GetTransaction":      "Neo.Block.GetTransaction",
 	},
 	"transaction": {
-		"GetHash":         "Neo.Transaction.GetHash",
-		"GetType":         "Neo.Transaction.GetType",
-		"GetAttributes":   "Neo.Transaction.GetAttributes",
-		"GetInputs":       "Neo.Transaction.GetInputs",
-		"GetOutputs":      "Neo.Transaction.GetOutputs",
-		"GetReferences":   "Neo.Transaction.GetReferences",
-		"GetUnspentCoins": "Neo.Transaction.GetUnspentCoins",
-		"GetScript":       "Neo.InvocationTransaction.GetScript",
+		"GetAttributes": "Neo.Transaction.GetAttributes",
+		"GetHash":       "Neo.Transaction.GetHash",
+		"GetInputs":     "Neo.Transaction.GetInputs",
+		"GetOutputs":    "Neo.Transaction.GetOutputs",
+		"GetReferences": "Neo.Transaction.GetReferences",
+		"GetScript":     "Neo.InvocationTransaction.GetScript",
+		"GetType":       "Neo.Transaction.GetType",
 	},
 	"asset": {
 		"Create":       "Neo.Asset.Create",
diff --git a/pkg/interop/transaction/transaction.go b/pkg/interop/transaction/transaction.go
index 354fcf019..b412fe92f 100644
--- a/pkg/interop/transaction/transaction.go
+++ b/pkg/interop/transaction/transaction.go
@@ -33,12 +33,6 @@ func GetReferences(t Transaction) []interface{} {
 	return []interface{}{}
 }
 
-// GetUnspentCoins returns the unspent coins for the given transaction.
-// FIXME: What is the correct return type for this?
-func GetUnspentCoins(t Transaction) interface{} {
-	return 0
-}
-
 // GetInputs returns the inputs of the given transaction.
 func GetInputs(t Transaction) []input.Input {
 	return []input.Input{}