From 508c91852254dac27f5315a8305985a5ba643e8e Mon Sep 17 00:00:00 2001
From: Sergey Pepyakin <s.pepyakin@gmail.com>
Date: Mon, 29 Jan 2018 18:01:50 +0300
Subject: [PATCH] select: int condition on stack top

---
 src/runner.rs | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/src/runner.rs b/src/runner.rs
index 29b3e82..0394c2b 100644
--- a/src/runner.rs
+++ b/src/runner.rs
@@ -470,11 +470,10 @@ impl<'a, E: Externals> Interpreter<'a, E> {
 			.value_stack_mut()
 			.pop_triple()
 			.and_then(|(left, mid, right)| {
-				let right: Result<_, Error> = right.try_into();
-				match (left, mid, right) {
-					(left, mid, Ok(condition)) => Ok((left, mid, condition)),
-					_ => Err(Error::Stack("expected to get int value from stack".into()))
-				}
+				let condition = right
+					.try_into()
+					.expect("Due to validation stack top should be int");
+				Ok((left, mid, condition))
 			})
 			.map(|(left, mid, condition)| if condition { left } else { mid })
 			.map(|val| context.value_stack_mut().push(val))