Kinda repl

rust/src/main.rs

@@ -1,14 +1,32 @@
 mod parser;
 
+use std::io;
 use std::io::prelude::*;
 use std::env;
 use std::fs::File;
 
-fn main() {
-    let args: Vec<String> = env::args().collect();
-    let mut file = File::open(&args[1]).expect("Could not read file");
+fn repl() {
+    loop {
+        let mut line = String::new();
+        io::stdin().read_line(&mut line).unwrap();
+        let tree = parser::parse_stmt(&line);
+        println!("{:?}", tree);
+    }
+}
+
+fn script(filename: &str) {
+    let mut file = File::open(filename).expect("Could not read file");
     let mut prgm = String::new();
     file.read_to_string(&mut prgm).unwrap();
     let tree = parser::parse(&prgm);
     println!("{:?}", tree);
 }
+
+fn main() {
+    let args: Vec<String> = env::args().collect();
+    if args.len() == 1 {
+        repl();
+    } else {
+        script(&args[1]);
+    }
+}

rust/src/parser.rs

@@ -111,6 +111,13 @@ pub fn parse<'a>(prgm: &'a str) -> Vec<Stmt<'a>> {
     deelang_parser::program(prgm).unwrap()
 }
 
+pub fn parse_stmt<'a>(stmt: &'a str) -> Stmt<'a> {
+    let stmt = preprocess(stmt);
+    let stmt = Box::new(stmt);
+    let stmt = Box::leak(stmt);
+    deelang_parser::stmt(stmt).unwrap()
+}
+
 
 #[cfg(test)]
 mod test {