From 88a73e64d81910a7ffb10c5be45f218041b18978 Mon Sep 17 00:00:00 2001
From: Luna <git@l4.pm>
Date: Tue, 10 Sep 2019 15:44:10 -0300
Subject: [PATCH] better repl logic

---
 src/main.zig | 15 ++++++++++++---
 1 file changed, 12 insertions(+), 3 deletions(-)

diff --git a/src/main.zig b/src/main.zig
index 1c7acaf..671ed3f 100644
--- a/src/main.zig
+++ b/src/main.zig
@@ -39,9 +39,15 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
 
     // TODO start a runner and keep it hot
 
+    // we keep
+    //  - a CommandList with the full commands we have right now
+    //  - a Command with the current last typed successful command
+
     var lang = langs.Lang.init(allocator);
     defer lang.deinit();
 
+    var current: langs.Command = undefined;
+
     while (true) {
         lang.reset();
         try stdout.print("> ");
@@ -53,10 +59,13 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
         };
 
         if (std.mem.eql(u8, line, "push")) {
-            try file.seekTo(0);
-            try printer.printList(cmds, stream);
+            try cmds.append(current);
             continue;
         } else if (std.mem.eql(u8, line, "list")) {
+            try printer.printList(cmds, stdout);
+            continue;
+        } else if (std.mem.eql(u8, line, "save")) {
+            try file.seekTo(0);
             try printer.printList(cmds, stream);
             continue;
         }
@@ -65,7 +74,7 @@ pub fn doRepl(allocator: *std.mem.Allocator, args_it: var) !void {
             std.debug.warn("repl: error while parsing: {}\n", err);
             continue;
         };
-        try cmds.append(cmds_parsed.at(0));
+        current = cmds_parsed.at(0);
     }
 }