Class: ArraySetItemHandler

Inherits:
AbstractCommandHandler show all
Defined in:
lib/hypertube-ruby-sdk/core/handler/array_set_item_handler.rb

Instance Method Summary collapse

Methods inherited from AbstractCommandHandler

#handle_command, #iterate

Constructor Details

#initialize ⇒ ArraySetItemHandler

Returns a new instance of ArraySetItemHandler.



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# File 'lib/hypertube-ruby-sdk/core/handler/array_set_item_handler.rb', line 6

def initialize
  @required_parameters_count = 3
end

Instance Method Details

#process(command) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/core/handler/array_set_item_handler.rb', line 10

def process(command)
  raise ArgumentError.new 'Array set item parameters mismatch' if command.payload.length < @required_parameters_count

  data = command.payload[0]
  if data.is_a? Array
    set_item_array(command)
  elsif data.is_a? Hash
    set_item_hash(command)
  else
    raise ArgumentError.new format('Cannot set element of %s', data)
  end
  data
end

#set_item_array(command) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/core/handler/array_set_item_handler.rb', line 24

def set_item_array(command)
  array = command.payload[0]
  value = command.payload[2]
  indexes = if command.payload[1].is_a? Array
              command.payload[1]
            else
              [command.payload[1]]
            end
  indexes[..-2].each do |i|
    array = array[i]
  end
  array[indexes[-1]] = value
end

#set_item_hash(command) ⇒ Object 



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# File 'lib/hypertube-ruby-sdk/core/handler/array_set_item_handler.rb', line 38

def set_item_hash(command)
  hash = command.payload[0]
  key = command.payload[1]
  value = command.payload[2]
  hash[key] = value
end