add push and list commands

src/main.zig

@@ -43,6 +43,7 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
     defer lang.deinit();
 
     while (true) {
+        lang.reset();
         try stdout.print("> ");
 
         var buffer = try std.Buffer.init(allocator, ""[0..]);
@@ -51,19 +52,20 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
             return err;
         };
 
+        if (std.mem.eql(u8, line, "push")) {
+            try file.seekTo(0);
+            try printer.printList(cmds, stream);
+            continue;
+        } else if (std.mem.eql(u8, line, "list")) {
+            try printer.printList(cmds, stream);
+            continue;
+        }
+
         var cmds_parsed = lang.parse(line) catch |err| {
             std.debug.warn("repl: error while parsing: {}\n", err);
             continue;
         };
         try cmds.append(cmds_parsed.at(0));
-
-        lang.reset();
-
-        // TODO save the line to scri_file? or should we have a special `push`
-        // to do so?
-
-        try file.seekTo(0);
-        try printer.printList(cmds, stream);
     }
 }