adds comments

John J. Aylward · johnjaylward · commit 16baa323cff4 · 2017-07-03T13:03:02.000-04:00
diff --git a/JSONTokener.java b/JSONTokener.java
@@ -144,6 +144,8 @@ public static int dehexchar(char c) {
     }
 
     /**
+     * Checks if the end of the input has been reached.
+     *  
      * @return true if at the end of the file and we didn't step back
      */
     public boolean end() {
@@ -168,7 +170,8 @@ public boolean more() throws JSONException {
             throw new JSONException("Unable to preserve stream position", e);
         }
         try {
-            if(this.reader.read()<0) {
+            // -1 is EOF, but next() can not consume the null character '\0'
+            if(this.reader.read() <= 0) {
                 this.eof = true;
                 return false;
             }

Original file line number	Diff line number	Diff line change
`@@ -144,6 +144,8 @@ public static int dehexchar(char c) {`
`144`	`144`	`}`
`145`	`145`
`146`	`146`	`/**`
	`147`	`+ * Checks if the end of the input has been reached.`
	`148`	`+ *`
`147`	`149`	`* @return true if at the end of the file and we didn't step back`
`148`	`150`	`*/`
`149`	`151`	`public boolean end() {`
`@@ -168,7 +170,8 @@ public boolean more() throws JSONException {`
`168`	`170`	`throw new JSONException("Unable to preserve stream position", e);`
`169`	`171`	`}`
`170`	`172`	`try {`
`171`		`- if(this.reader.read()<0) {`
	`173`	`+ // -1 is EOF, but next() can not consume the null character '\0'`
	`174`	`+ if(this.reader.read() <= 0) {`
`172`	`175`	`this.eof = true;`
`173`	`176`	`return false;`
`174`	`177`	`}`