X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=src%2Forg%2Fxwt%2Fjs%2FJSExn.java;fp=src%2Forg%2Fxwt%2Fjs%2FJSExn.java;h=b3bfb980493f91b2e81e037faecdf3daef9075e8;hb=96cc912c45623abf8a8a37d7c1d6103e5fe58bd5;hp=2cc959156121a0eeaeed1684ab06ba8849c82a36;hpb=9c2602143956cd39ecf5ef4c9eb31f5f56b5bd66;p=org.ibex.core.git

diff --git a/src/org/xwt/js/JSExn.java b/src/org/xwt/js/JSExn.java
index 2cc9591..b3bfb98 100644
--- a/src/org/xwt/js/JSExn.java
+++ b/src/org/xwt/js/JSExn.java
@@ -8,11 +8,19 @@ import java.util.*;
 
 /** An exception which can be thrown and caught by JavaScript code */
 public class JSExn extends Exception { 
+    private Vec backtrace = new Vec();
     private Object js = null; 
     public JSExn(Object js) { this.js = js; } 
-    public String toString() { return "JSExn: " + js; }
+    public String toString() { return "JSExn: " + JS.toString(js); }
     public String getMessage() { return toString(); }
     public Object getObject() { return js; } 
+    public void addBacktrace(String sourceName, int lineNo) { backtrace.addElement(sourceName + ":" + lineNo); }
+    public String backtrace() {
+        StringBuffer sb = new StringBuffer(1024);
+        for(int i=0;i<backtrace.size();i++)
+            sb.append("    at " + (String) backtrace.elementAt(i) + "\n");
+        return sb.toString();
+    }
 } 
 
 /** should only be used for failed coercions */