Module: WatchPoint

Defined in:
lib/watch_point.rb,
lib/watch_point/version.rb

Constant Summary collapse

VERSION = 
'0.0.1'

Class Method Summary collapse

Class Method Details

.disable ⇒ Object 



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# File 'lib/watch_point.rb', line 59

def disable
  set_trace_func(nil)
end

.enable ⇒ Object 



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# File 'lib/watch_point.rb', line 28

def enable
  set_trace_func(proc do |event, _, _, _, b, _|
    if @interactive_thread && Thread.current != @interactive_thread
      @sleeping_threads << Thread.current
      Thread.stop
    end

    next if event != 'line'

    @watch_list.each do |obj, hash0|
      if obj.hash != hash0
        self.unwatch(obj)

        @interactive_thread = Thread.current
        # puts "Object #{obj} changed!"
        @last_binding.pry

        @interactive_thread = nil
        @sleeping_threads.each(&:wakeup)
        @sleeping_threads = []

        self.watch(obj)

        break
      end
    end

    @last_binding = b
  end)
end

.unwatch(obj) ⇒ Object 



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# File 'lib/watch_point.rb', line 22

def unwatch(obj)
  @watch_list.delete_if do |obj1, _|
    obj.object_id == obj1.object_id
  end
end

.watch(obj) ⇒ Object 



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# File 'lib/watch_point.rb', line 13

def watch(obj)
  if @watch_list.any? { |obj1, _| obj1.object_id == obj.object_id }
    raise ArgumentError, "Already watching object ##{obj.object_id}"
  end

  @watch_list << [obj, obj.hash]
  @last_binding ||= binding
end