# something that represents a rake task                                                                          
class Task
  attr_accessor :name                                                                                                 
  def initialize(name)                                                                                                
    @name = name                                                                                                      
  end
end 
  
                                                                                                                      
# something like a rake 'task' method
def task(name, &block)
  yield Task.new(name)
end     
        
      
# a method that will execute a block defined inside of a rake task
# the idea is that this method can trap and report on exceptions
# I want to get the task name to include in the report in as transparent
# of a way as possible.  Unfortunately, it seems eval is the only way to
# go about getting this.
def handler(&block)
  begin
    yield
  rescue Exception => e
    # ideally, this would test for t first
    name = block.binding.eval('t.name')
    puts "error in task '#{name}': e.message"
  end
end


task "publish" do |t|
  handler do
    # stuff here
    # handler will pick up t
    raise "something bad happened"
  end
end


# this results in
#   error in task 'publish': e.message