From eeeaf894e020697585a329d7bbb679316d5447a2 Mon Sep 17 00:00:00 2001
From: Bob Polis <rpb.polis@avans.nl>
Date: Mon, 21 Sep 2020 12:41:29 +0200
Subject: [PATCH] moved comment parsing to first pass, to save program space

---
 interpreter.cpp | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/interpreter.cpp b/interpreter.cpp
index 4f3615c..1a340db 100644
--- a/interpreter.cpp
+++ b/interpreter.cpp
@@ -36,6 +36,8 @@ std::string interpreter::eval(std::istream& in, bool& done) {
     for (std::string line; std::getline(in, line); ++_pc) {
         if (line[0] == ':') {
             _labels.emplace(line.substr(1), _pc--);
+        } else if (line[0] == '#') { // check comment
+            _pc--;
         } else {
             _prog.push_back(line);
         }
@@ -47,12 +49,6 @@ std::string interpreter::eval(std::istream& in, bool& done) {
         // fetch next instruction
         std::string code {_prog[_pc]};
 
-        // check comment
-        if (code[0] == '#') {
-            _pc++;
-            continue;
-        }
-        
         // check literal int
         if (std::isdigit(code[0])) {
             _stack.push_back(code);