feat: parsing a decent chunk of the ink grammar

src/root.zig

@@ -13,7 +13,11 @@ pub const Story = struct {
         source_bytes: [:0]const u8,
         options: LoadOptions,
     ) !Story {
-        var ast = try Ast.parse(gpa, source_bytes, "<STDIN>", 0);
+        var arena_allocator = std.heap.ArenaAllocator.init(gpa);
+        defer arena_allocator.deinit();
+
+        const arena = arena_allocator.allocator();
+        var ast = try Ast.parse(gpa, arena, source_bytes, "<STDIN>", 0);
         defer ast.deinit(gpa);
 
         try ast.render(gpa, options.stream_writer, .{
@@ -27,6 +31,7 @@ pub const Story = struct {
         }
         return .{};
     }
+
     pub fn deinit(_: *Story) void {}
 };