Implement sub-process based tester

1 files changed, 5 insertions, 3 deletions

diff --git a/rust/src/main.rs b/rust/src/main.rs
index b0e8ed9..8d52c46 100644
--- a/rust/src/main.rs
+++ b/rust/src/main.rs
@@ -1,16 +1,18 @@
 use std::{
     env::args,
-    io::{stdin, stdout},
+    io::{stdin, stdout, IsTerminal},
 };
 
-use lambda::io::{eval_file, repl};
+use lambda::io::{batch_eval, eval_file, repl};
 
 fn main() {
     if args().count() > 1 {
         for file in args().skip(1) {
             println!("{}", eval_file(&file));
         }
-    } else {
+    } else if stdin().is_terminal() {
         repl(&mut stdin(), &mut stdout());
+    } else {
+        batch_eval(&mut stdin(), &mut stdout());
     }
 }