From: "Victor \"Zverok\" Shepelev" <vshepelev@...>
Date: 2007-09-03T01:43:21+09:00
Subject: Rough idea: Quering ObjectSpace

Hi all.

Very raw idea, based on SemmleCode for Java [1].

# select all classes from namespace MyApp, 
# with a too few methods
ObjectSpace.
  select{|obj| obj.kind_of?(Class) && obj.in_namespace?(:MyApp)}.
  select{|obj| obj.methods.size < 2}

# select all classes from namespace MyApp, 
# and order them by line-of-code metrics
ObjectSpace.
  select{|obj| obj.kind_of?(Class) && obj.in_namespace?(:MyApp)}.
  map{|obj| [obj, obj.methods.collect{|m| m.loc}.sum]  }.
  sort{|l, r| l[1] <=> r[1]}

# select all methods, which calls method "deprecated"
ObjectSpace.detect_methods{|m| m.calls?(:deprecated)}

The realisation of idea will require:
* some hacking through ParseTree 
* adding lot of "analysis" methods to Class, Object and Method classes
* adding several "selection" methods to ObjectSpace

V.

1: http://semmle.com/