From b7de165950a9efc51febeaf167a17b23f4d6e1c7 Mon Sep 17 00:00:00 2001
From: Bob Nystrom <robert@stuffwithstuff.com>
Date: Fri, 25 Oct 2013 20:07:04 -0700
Subject: [PATCH] Line comments.

---
 example/hello.wren |  2 +-
 src/compiler.c     | 19 ++++++++++++++++++-
 2 files changed, 19 insertions(+), 2 deletions(-)

diff --git a/example/hello.wren b/example/hello.wren
index 6b7095a9..197294c4 100644
--- a/example/hello.wren
+++ b/example/hello.wren
@@ -1,4 +1,4 @@
-class Foo {
+class Foo { // line comment
   bar {
     123
   }
diff --git a/src/compiler.c b/src/compiler.c
index 3be31775..39d64557 100644
--- a/src/compiler.c
+++ b/src/compiler.c
@@ -123,6 +123,7 @@ static void readRawToken(Parser* parser);
 static void readName(Parser* parser);
 static void readNumber(Parser* parser);
 static void readString(Parser* parser);
+static void skipLineComment(Parser* parser);
 static void skipWhitespace(Parser* parser);
 static int isKeyword(Parser* parser, const char* keyword);
 static int isName(char c);
@@ -462,7 +463,15 @@ void readRawToken(Parser* parser)
       case '.': makeToken(parser, TOKEN_DOT); return;
       case ',': makeToken(parser, TOKEN_COMMA); return;
       case '*': makeToken(parser, TOKEN_STAR); return;
-      case '/': makeToken(parser, TOKEN_SLASH); return;
+      case '/':
+        if (peekChar(parser) == '/')
+        {
+          skipLineComment(parser);
+          break;
+        }
+        makeToken(parser, TOKEN_SLASH);
+        return;
+
       case '%': makeToken(parser, TOKEN_PERCENT); return;
       case '+': makeToken(parser, TOKEN_PLUS); return;
       case '-':
@@ -594,6 +603,14 @@ void readString(Parser* parser)
   makeToken(parser, TOKEN_STRING);
 }
 
+void skipLineComment(Parser* parser)
+{
+  while (peekChar(parser) != '\n' && peekChar(parser) != '\0')
+  {
+    advanceChar(parser);
+  }
+}
+
 void skipWhitespace(Parser* parser)
 {
   while (peekChar(parser) == ' ') advanceChar(parser);