Support JavaScriptCore stack traces.

lib/src/trace.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library trace;
 
 import 'dart:collection';
 import 'dart:math' as math;
 
 import 'chain.dart';
 import 'frame.dart';
 import 'lazy_trace.dart';
 import 'utils.dart';
 import 'vm_trace.dart';
 
+import 'dart:convert';
+
 final _terseRegExp = new RegExp(r"(-patch)?(/.*)?$");
 
 /// A RegExp to match V8's stack traces.
 ///
 /// V8's traces start with a line that's either just "Error" or else is a
 /// description of the exception that occurred. That description can be multiple
 /// lines, so we just look for any line other than the first that begins with
 /// three or four spaces and "at".
 final _v8Trace = new RegExp(r"\n    ?at ");
 
@@ skipping 82 matching lines @@
   }
 
   /// Parses a string representation of a stack trace.
   ///
   /// [trace] should be formatted in the same way as a Dart VM or browser stack
   /// trace.
   factory Trace.parse(String trace) {
     try {
       if (trace.isEmpty) return new Trace(<Frame>[]);
       if (trace.contains(_v8Trace)) return new Trace.parseV8(trace);
+      if (trace.startsWith("\tat ")) return new Trace.parseJSCore(trace);
       if (trace.contains(_firefoxSafariTrace)) {
         return new Trace.parseFirefox(trace);
       }
       if (trace.contains(_friendlyTrace)) {
         return new Trace.parseFriendly(trace);
       }
 
       // Default to parsing the stack trace as a VM trace. This is also hit on
       // IE and Safari, where the stack trace is just an empty string (issue
       // 11257).
       return new Trace.parseVM(trace);
     } on FormatException catch (error) {
+      print(JSON.encode(trace));

[kevmoo, 2015/04/13 23:25:47]

Oops?

[nweiz, 2015/04/13 23:27:19]

Done.

       throw new FormatException('${error.message}\nStack trace:\n$trace');
     }
   }
 
   /// Parses a string representation of a Dart VM stack trace.
   Trace.parseVM(String trace)
       : this(trace.trim().split("\n").
             // TODO(nweiz): remove this when issue 15920 is fixed.
             where((line) => line.isNotEmpty).
             map((line) => new Frame.parseVM(line)));
 
   /// Parses a string representation of a Chrome/V8 stack trace.
   Trace.parseV8(String trace)
       : this(trace.split("\n").skip(1)
           // It's possible that an Exception's description contains a line that
           // looks like a V8 trace line, which will screw this up.
           // Unfortunately, that's impossible to detect.
           .skipWhile((line) => !line.startsWith(_v8TraceLine))
           .map((line) => new Frame.parseV8(line)));
 
+  /// Parses a string representation of a JavaScriptCore stack trace.
+  Trace.parseJSCore(String trace)
+      : this(trace.split("\n").map((line) => new Frame.parseV8(line)));
+
   /// Parses a string representation of an Internet Explorer stack trace.
   ///
   /// IE10+ traces look just like V8 traces. Prior to IE10, stack traces can't
   /// be retrieved.
   Trace.parseIE(String trace)
       : this.parseV8(trace);
 
   /// Parses a string representation of a Firefox stack trace.
   Trace.parseFirefox(String trace)
       : this(trace.trim().split("\n")
@@ skipping 107 matching lines @@
     // Figure out the longest path so we know how much to pad.
     var longest = frames.map((frame) => frame.location.length)
         .fold(0, math.max);
 
     // Print out the stack trace nicely formatted.
     return frames.map((frame) {
       return '${padRight(frame.location, longest)}  ${frame.member}\n';
     }).join();
   }
 }