Add optional arguments to NullPointerException so that it can report more information (make it simi…

Add optional arguments to NullPointerException so that it can report more information (make it similar to what is reported by NoSuchMethodException):

NullPointerException : method: 'foo'
Receiver: null
Arguments: [1, 2]
Committed: https://code.google.com/p/dart/source/detail?r=6429

[hausner, 2012-04-11 19:29:38]

lgtm

[gbracha, 2012-04-11 19:36:34]

lgtm

[sra1, 2012-04-11 20:43:12]

https://chromiumcodereview.appspot.com/10034026/diff/1/corelib/src/exceptions...
File corelib/src/exceptions.dart (right):

https://chromiumcodereview.appspot.com/10034026/diff/1/corelib/src/exceptions...
corelib/src/exceptions.dart:125: this.arguments = const[]]);
NullPointerException is called from hand written JS code in the Frog runtime.
Calling from hand written JS code has a constraint that optional argument
default values can only be null.
It is not possible in the hand-written code to find the 'global' variable
containing the shared const empty list.

It might be possible to change the call in the hand written code to explicitly
pass null and [].

https://chromiumcodereview.appspot.com/10034026/diff/1/corelib/src/exceptions...
corelib/src/exceptions.dart:132: if (functionName == null) {
Do this test first.  No need to allocate a StringBuffer if you don't use it.