From 52b0d661e065e52380c797ebef9fc9e1da1ae11e Mon Sep 17 00:00:00 2001
From: Evgenii Stratonikov <evgeniy@nspcc.ru>
Date: Tue, 10 Sep 2019 14:19:36 +0300
Subject: [PATCH] vm: implement BigInt -> Boolean conversion

---
 pkg/vm/stack.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/pkg/vm/stack.go b/pkg/vm/stack.go
index 17c6e8143..234d27dc0 100644
--- a/pkg/vm/stack.go
+++ b/pkg/vm/stack.go
@@ -63,6 +63,11 @@ func (e *Element) BigInt() *big.Int {
 	switch t := e.value.(type) {
 	case *BigIntegerItem:
 		return t.value
+	case *BoolItem:
+		if t.value {
+			return big.NewInt(1)
+		}
+		return big.NewInt(0)
 	default:
 		b := t.Value().([]uint8)
 		return new(big.Int).SetBytes(util.ArrayReverse(b))