Module: Command::Common

Included in:
Command, CommandSet
Defined in:
lib/command-set/command-common.rb

Instance Method Summary collapse

Instance Method Details

#add_requirements(subject) ⇒ Object 



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# File 'lib/command-set/command-common.rb', line 34

def add_requirements(subject)
  each_command do |command|
    subject.required_fields(*(command.subject_requirements.uniq))
    command.argument_list.each do |argument|
      subject.required_fields(*(argument.subject_requirements.uniq))
    end
  end
  return subject
end

#completion_list(terms, prefix, subject) ⇒ Object 



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# File 'lib/command-set/command-common.rb', line 73

def completion_list(terms, prefix, subject)
  visitor = SetVisitor.new(:prefix => prefix, 
                           :subject => subject,
                           :completion_list => [],
                           :arguments => [],
                           :original_terms => terms.dup)
  def visitor.arrive_at(terms, node)
    self.arguments = node.argument_list.dup
    image = subject.get_image(node.subject_requirements)
    until(terms.empty? or arguments.empty?) do
      arguments.first.match_terms(image, terms, arguments)
    end
  end

  def visitor.set_out_of_terms(node)
    if arguments.empty? or not arguments.first.required?
      self.completion_list = node.command_names.grep(%r{^#{prefix}.*})
    end
    self.command_out_of_terms(node)
  end

  def visitor.command_out_of_terms(node)
    image = subject.get_image(node.subject_requirements)
    arguments.each do |handler|
      self.completion_list += handler.complete(original_terms, prefix, image)
      break unless handler.omittable?
    end 
  end

  def visitor.term_without_hop(terms, node)
    return []
  end

  visit(terms, visitor)
  return visitor.completion_list
end

#find_command(path) ⇒ Object 



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# File 'lib/command-set/command-common.rb', line 44

def find_command(path)
  visitor = SetVisitor.new(:command => nil)
  def visitor.set_out_of_terms(node)
    self.command = node
  end

  def visitor.arrive_at(terms, node)
    self.command = node
  end

  def visitor.term_without_hop(terms, node)
    raise CommandException, "No such command #{terms.first}"
  end
    
  visit(path, visitor)
  return visitor.command
end

#path ⇒ Object 



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# File 'lib/command-set/command-common.rb', line 26

def path
  if @parent.nil?
    return []
  else
    return @parent.path + [@name]
  end
end

#process_terms(terms, subject, arg_hash = {}) ⇒ Object 



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# File 'lib/command-set/command-common.rb', line 62

def process_terms(terms, subject, arg_hash={})
  visitor = SetVisitor.new(:command_class => nil, :subject => subject, :arg_hash => {})
  def visitor.arrive_at(terms, node)
    self.command_class = node.factory
    subject = self.subject.get_image(node.subject_requirements)
    return node.consume_terms(terms, subject, self.arg_hash)
  end
  visit(terms, visitor)
  return visitor
end