Use //@ sourceURL when formatting stack trace

src/messages.js

 // Copyright 2006-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 666 matching lines @@
 CallSite.prototype.isEval = function () {
   var script = %FunctionGetScript(this.fun);
   return script && script.compilation_type == COMPILATION_TYPE_EVAL;
 };
 
 CallSite.prototype.getEvalOrigin = function () {
   var script = %FunctionGetScript(this.fun);
   return FormatEvalOrigin(script);
 };
 
+CallSite.prototype.getScriptNameOrSourceURL = function () {
+  var script = %FunctionGetScript(this.fun);
+  return script ? script.nameOrSourceURL() : null;
+};
+
 CallSite.prototype.getFunction = function () {
   return this.fun;
 };
 
 CallSite.prototype.getFunctionName = function () {
   // See if the function knows its own name
   var name = this.fun.name;
   if (name) {
     return name;
   } else {
@@ skipping 71 matching lines @@
 };
 
 CallSite.prototype.isConstructor = function () {
   var constructor = this.receiver ? this.receiver.constructor : null;
   if (!constructor)
     return false;
   return this.fun === constructor;
 };
 
 function FormatEvalOrigin(script) {
-  var eval_origin = "";
+  var sourceURL = script.nameOrSourceURL();
+  if (sourceURL)
+    return sourceURL;
+
+  var eval_origin = "eval at ";
   if (script.eval_from_function_name) {
     eval_origin += script.eval_from_function_name;
   } else {
     eval_origin +=  "<anonymous>";
   }
 
   var eval_from_script = script.eval_from_script;
   if (eval_from_script) {
     if (eval_from_script.compilation_type == COMPILATION_TYPE_EVAL) {
       // eval script originated from another eval.
-      eval_origin += " (eval at " + FormatEvalOrigin(eval_from_script) + ")";
+      eval_origin += " (" + FormatEvalOrigin(eval_from_script) + ")";
     } else {
       // eval script originated from "real" scource.
       if (eval_from_script.name) {
         eval_origin += " (" + eval_from_script.name;
         var location = eval_from_script.locationFromPosition(script.eval_from_script_position, true);
         if (location) {
           eval_origin += ":" + (location.line + 1);
           eval_origin += ":" + (location.column + 1);
         }
         eval_origin += ")"
       } else {
         eval_origin += " (unknown source)";
       }
     }
   }
 
   return eval_origin;
 };
 
 function FormatSourcePosition(frame) {
+  var fileName;
   var fileLocation = "";
   if (frame.isNative()) {
     fileLocation = "native";
   } else if (frame.isEval()) {
-    fileLocation = "eval at " + frame.getEvalOrigin();
+    fileName = frame.getScriptNameOrSourceURL();
+    if (!fileName)
+      fileLocation = frame.getEvalOrigin();
   } else {
-    var fileName = frame.getFileName();
-    if (fileName) {
-      fileLocation += fileName;
-      var lineNumber = frame.getLineNumber();
-      if (lineNumber != null) {
-        fileLocation += ":" + lineNumber;
-        var columnNumber = frame.getColumnNumber();
-        if (columnNumber) {
-          fileLocation += ":" + columnNumber;
-        }
+    fileName = frame.getFileName();
+  }
+
+  if (fileName) {
+    fileLocation += fileName;
+    var lineNumber = frame.getLineNumber();
+    if (lineNumber != null) {
+      fileLocation += ":" + lineNumber;
+      var columnNumber = frame.getColumnNumber();
+      if (columnNumber) {
+        fileLocation += ":" + columnNumber;
       }
     }
   }
+
   if (!fileLocation) {
     fileLocation = "unknown source";
   }
   var line = "";
   var functionName = frame.getFunction().name;
   var addPrefix = true;
   var isConstructor = frame.isConstructor();
   var isMethodCall = !(frame.isToplevel() || isConstructor);
   if (isMethodCall) {
     var methodName = frame.getMethodName();
@@ skipping 140 matching lines @@
     return this.name + ": " + FormatMessage({ type: type, args: this.arguments });
   }
   var message = this.message;
   return this.name + (message ? (": " + message) : "");
 }, DONT_ENUM);
 
 
 // Boilerplate for exceptions for stack overflows. Used from
 // Top::StackOverflow().
 const kStackOverflowBoilerplate = MakeRangeError('stack_overflow', []);