Top Level Namespace

Defined Under Namespace

Classes: ContextNotFound

Instance Method Summary collapse

Instance Method Details

#cm_fopen(filename) ⇒ Object 



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# File 'lib/context_manager.rb', line 24

def cm_fopen(filename)
  f = File.open(filename)
  
  close_file = finish do |file|
    file.close
  end

  [f, close_file]
end

#finish(&block) ⇒ Object 



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# File 'lib/context_manager.rb', line 3

def finish(&block)
  Proc.new { |obj| block.call(obj) }
end

#with(*args) ⇒ Object

Raises:



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# File 'lib/context_manager.rb', line 7

def with(*args)
  begin
    arg = args[0]
    yield_obj = arg[0]
  rescue
    raise ContextNotFound, 'no context found'
  end

  raise ContextNotFound, 'no context found' if yield_obj.nil?

  begin
    yield yield_obj
  ensure
    arg[1].call(yield_obj)
  end
end