From 34074287861b3ef6c9ee89195056d20ae1603cfc Mon Sep 17 00:00:00 2001
From: Joel Kronqvist <joel.kronqvist@iki.fi>
Date: Sat, 26 Jul 2025 18:34:44 +0300
Subject: Added variables and tests for their substitution

---
 src/sexp/util.rs | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'src/sexp/util.rs')

diff --git a/src/sexp/util.rs b/src/sexp/util.rs
index c31358f..ce6de5d 100644
--- a/src/sexp/util.rs
+++ b/src/sexp/util.rs
@@ -25,3 +25,8 @@ impl From<i32> for SLeaf {
 pub fn scons(x: impl Into<Box<SExp>>, y: impl Into<Box<SExp>>) -> SExp {
     SCons(x.into(), y.into())
 }
+
+pub fn var(name: &str) -> SExp {
+    Atom(Var(name.to_string()))
+}
+
-- 
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