Selecting "2 halt" and inspecting brought me to the method Compiler#evalute:in:to:notifying:ifFail.  I wrote a script to
access this method directly ( see below ).  I am getting nil instead of 3.  When I debugged, it looks like the Parser is generating the following MethodNode: 
DoIt
	^ nil

What do I need to do to get Compiler-love?


| exprStream result failBlock |

exprStream  _ ReadWriteStream on: ''.
exprStream nextPutAll: '1 + 2'.
failBlock _ [ Transcript show: 'ArithmeticExpression#eval FAILED: ', exprStream contents. ].
result _ Compiler new evaluate: exprStream in: nil to: nil notifying: nil ifFail: failBlock.
^ result