add debug flag to runCommands

src/main.zig

@@ -302,12 +302,16 @@ fn print_usage() !void {
 
 pub fn main() !void {
     var arena = std.heap.ArenaAllocator.init(std.heap.c_allocator);
+    defer arena.deinit();
+
     const allocator = &arena.allocator;
 
     var lang = langs.Lang.init(allocator);
-    var runner = runners.Runner.init(allocator);
     //defer lang.deinit();
 
+    var runner = runners.Runner.init(allocator);
+    //defer runner.deinit();
+
     var args_it = std.process.args();
 
     const exe_name = try (args_it.next(allocator) orelse @panic("expected exe name"));
@@ -326,11 +330,7 @@ pub fn main() !void {
     _ = try file.read(data);
 
     var cmds = try lang.parse(data);
-    try runner.runCommands(cmds);
-    var it = cmds.iterator();
-    while (it.next()) |cmd| {
-        cmd.print();
-    }
+    try runner.runCommands(cmds, true);
 }
 
 pub fn oldMain() !void {

src/runner.zig

@@ -20,10 +20,15 @@ pub const Runner = struct {
         };
     }
 
-    pub fn runCommands(self: *Runner, cmds: lang.CommandList) !void {
+    pub fn runCommands(
+        self: *Runner,
+        cmds: lang.CommandList,
+        debug_flag: bool,
+    ) !void {
         var it = cmds.iterator();
 
         while (it.next()) |cmd| {
+            if (debug_flag) cmd.print();
             try self.runCommand(cmd);
         }
     }