From 5a500fb8a7c0ba4b8a59e2622c8cbafdc4ce1fe9 Mon Sep 17 00:00:00 2001
From: Laurenz <laurmaedje@gmail.com>
Date: Thu, 8 Jul 2021 19:12:07 +0200
Subject: Range operator

---
 src/eval/ops.rs | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'src/eval/ops.rs')

diff --git a/src/eval/ops.rs b/src/eval/ops.rs
index 2537f4a5..01044842 100644
--- a/src/eval/ops.rs
+++ b/src/eval/ops.rs
@@ -250,6 +250,14 @@ comparison!(leq, Less | Equal);
 comparison!(gt, Greater);
 comparison!(geq, Greater | Equal);
 
+/// Compute the range from `lhs` to `rhs`.
+pub fn range(lhs: Value, rhs: Value) -> Value {
+    match (lhs, rhs) {
+        (Int(a), Int(b)) => Array((a ..= b).map(Int).collect()),
+        _ => Error,
+    }
+}
+
 /// Concatenate two collections.
 fn concat<T, A>(mut a: T, b: T) -> T
 where
-- 
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