Contents

#!/usr/bin/env ruby
# Example demonstrating "around" advice that traces calls to all methods in
# classes Foo and Bar

$LOAD_PATH.unshift File.dirname(__FILE__) + '/../lib'
require 'aquarium'

module Aquarium
  class Foo
    def initialize *args
      p "Inside:   Foo#initialize: args = #{args.inspect}"
    end
    def do_it *args
      p "Inside:   Foo#do_it: args = #{args.inspect}"
    end
  end

  module BarModule
    def initialize *args
      p "Inside:   BarModule#initialize: args = #{args.inspect}"
    end
    def do_something_else *args
      p "Inside:   BarModule#do_something_else: args = #{args.inspect}"
    end
  end

  class Bar
    include BarModule
  end
end

p "Before advising the methods:"
foo1 = Aquarium::Foo.new :a1, :a2
foo1.do_it :b1, :b2

bar1 = Aquarium::Bar.new :a3, :a4
bar1.do_something_else :b3, :b4

around :types => [Aquarium::Foo, Aquarium::Bar], :methods => :all, :method_options => :suppress_ancestor_methods do |execution_point, *args|
  p "Entering: #{execution_point.type.name}##{execution_point.method_name}: args = #{args.inspect}"
  execution_point.proceed
  p "Leaving:  #{execution_point.type.name}##{execution_point.method_name}: args = #{args.inspect}"
end

p "After advising the methods. Notice that #intialize isn't advised:"
foo2 = Aquarium::Foo.new :a5, :a6
foo2.do_it :b5, :b6

bar1 = Aquarium::Bar.new :a7, :a8
bar1.do_something_else :b7, :b8

around :types => [Aquarium::Foo, Aquarium::Bar], :methods => :initialize, :method_options => :private do |execution_point, *args|
  p "Entering: #{execution_point.type.name}##{execution_point.method_name}: args = #{args.inspect}"
  execution_point.proceed
  p "Leaving:  #{execution_point.type.name}##{execution_point.method_name}: args = #{args.inspect}"
end

p "After advising the private methods. Notice that #intialize is advised:"
foo2 = Aquarium::Foo.new :a9, :a10
foo2.do_it :b9, :b10

bar1 = Aquarium::Bar.new :a11, :a12
bar1.do_something_else :b11, :b12

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
aquarium-0.1.0	examples/method_tracing_example.rb