From c34064f51abf1fb1548edea58173a6354f718571 Mon Sep 17 00:00:00 2001
From: Eryn Wells <eryn@erynwells.me>
Date: Sun, 25 Dec 2016 20:49:46 -0700
Subject: [PATCH] TODO about using Results

---
 src/lexer/mod.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/lexer/mod.rs b/src/lexer/mod.rs
index b3cacdb..88e9d12 100644
--- a/src/lexer/mod.rs
+++ b/src/lexer/mod.rs
@@ -78,6 +78,9 @@ impl Lexer {
 }
 
 impl Lexer {
+    // TODO: Use std::result::Result for these state_* methods.
+    // https://doc.rust-lang.org/1.14.0/core/result/enum.Result.html
+
     /// Handle self.state == State::Initial
     fn state_initial(&mut self, c: char, token: &mut Option<Token>) {
         if c.is_left_paren() {