From a7cd4a0ff28ae2d3a1fcf731bb778302297e12d8 Mon Sep 17 00:00:00 2001
From: lq8152 <lq8152@users.noreply.github.com>
Date: Tue, 22 Oct 2019 00:22:05 +0800
Subject: [PATCH] Update SimpleLexer.java

---
 lab/craft/SimpleLexer.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lab/craft/SimpleLexer.java b/lab/craft/SimpleLexer.java
index 329e43b..c902593 100644
--- a/lab/craft/SimpleLexer.java
+++ b/lab/craft/SimpleLexer.java
@@ -273,6 +273,8 @@ public static void dump(SimpleTokenReader tokenReader){
         while ((token= tokenReader.read())!=null){
             System.out.println(token.getText()+"\t\t"+token.getType());
         }
+        //此处应该重置pos，否则打印完以后，指针已到token流的末尾，后续如果继续调用TokenReader会导致错误。
+        tokenReader.setPosition(0);
     }
 
     /**
@@ -342,4 +344,4 @@ public void setPosition(int position) {
 
     }
 
-}
\ No newline at end of file
+}