From a99986ec4c903f116a5ed264f5cbbcba954c9338 Mon Sep 17 00:00:00 2001
From: Arnaud Bailly <arnaud.bailly@iohk.io>
Date: Wed, 25 Sep 2024 12:18:02 +0200
Subject: Can parse and evaluate multiple expressions from a single input

---
 rust/sample/test.txt        |  6 +++++-
 rust/sample/test_normal.txt |  1 +
 rust/src/parser.rs          | 15 +++++++++++----
 3 files changed, 17 insertions(+), 5 deletions(-)
 create mode 100644 rust/sample/test_normal.txt

diff --git a/rust/sample/test.txt b/rust/sample/test.txt
index 3cacc0b..76dc68a 100644
--- a/rust/sample/test.txt
+++ b/rust/sample/test.txt
@@ -1 +1,5 @@
-12
\ No newline at end of file
+12
+foo
+  true
+
+(x x)
diff --git a/rust/sample/test_normal.txt b/rust/sample/test_normal.txt
new file mode 100644
index 0000000..00abde9
--- /dev/null
+++ b/rust/sample/test_normal.txt
@@ -0,0 +1 @@
+((lam x 1) ((lam x (x x)) (lam x (x x))))
diff --git a/rust/src/parser.rs b/rust/src/parser.rs
index c54386c..48ef2e0 100644
--- a/rust/src/parser.rs
+++ b/rust/src/parser.rs
@@ -54,10 +54,12 @@ pub fn parse(arg: &str) -> Vec<Value> {
     let tokens = tokenize(arg);
     let mut parser = Parser { tokens, index: 0 };
     let mut result = Vec::new();
-    let expr = parse_expression(&mut parser)
-        .map_err(|e| panic!("Syntax error: {}", e))
-        .unwrap();
-    result.push(expr);
+    while parser.index < parser.tokens.len() {
+        let expr = parse_expression(&mut parser)
+            .map_err(|e| panic!("Syntax error: {}", e))
+            .unwrap();
+        result.push(expr);
+    }
     result
 }
 
@@ -248,6 +250,11 @@ mod tests {
         );
     }
 
+    #[test]
+    fn parse_multiple_values() {
+        assert_eq!(vec![Sym("foo".to_string()), Num(42)], parse("foo 42"));
+    }
+
     impl Arbitrary for Value {
         type Parameters = ();
         type Strategy = BoxedStrategy<Self>;
-- 
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