Class: Samovar::Nested

Inherits:
Object
  • Object
show all
Defined in:
lib/samovar/nested.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, commands, key: :command, default: nil) ⇒ Nested

Returns a new instance of Nested.



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# File 'lib/samovar/nested.rb', line 23

def initialize(name, commands, key: :command, default: nil)
	@name = name
	@commands = commands
	@key = key
	
	# This is the default name [of a command], not the default command:
	@default = default
end

Instance Attribute Details

#key ⇒ Object (readonly)

Returns the value of attribute key.



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# File 'lib/samovar/nested.rb', line 32

def key
  @key
end

Instance Method Details

#parse(input, default) ⇒ Object 



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# File 'lib/samovar/nested.rb', line 56

def parse(input, default)
	if command = @commands[input.first]
		input.shift
		
		# puts "Instantiating #{command} with #{input}"
		command.new(input)
	elsif @default
		default || @commands[@default].new(input)
	end
end

#to_a ⇒ Object 



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# File 'lib/samovar/nested.rb', line 38

def to_a
	usage = [@name]
	
	if @commands.size == 0
		usage << "No commands available."
	elsif @commands.size == 1
		usage << "Only #{@commands.first}."
	else
		usage << "One of: #{@commands.keys.join(', ')}."
	end
	
	if @default
		usage << "Default: #{@default}"
	end
	
	return usage
end

#to_s ⇒ Object 



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# File 'lib/samovar/nested.rb', line 34

def to_s
	@name
end

#usage(rows) ⇒ Object 



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# File 'lib/samovar/nested.rb', line 67

def usage(rows)
	rows << self
	
	@commands.each do |key, klass|
		klass.usage(rows, key)
	end
end