Class: Mothership::Inputs

Inherits:
Object
  • Object
show all
Defined in:
lib/mothership/inputs.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(command, context = nil, inputs = {}) ⇒ Inputs

Returns a new instance of Inputs.



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# File 'lib/mothership/inputs.rb', line 5

def initialize(command, context = nil, inputs = {})
  @command = command
  @context = context
  @inputs = inputs
  @cache = {}
end

Instance Attribute Details

#inputs ⇒ Object (readonly)

Returns the value of attribute inputs.



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# File 'lib/mothership/inputs.rb', line 3

def inputs
  @inputs
end

Instance Method Details

#[](name, *args) ⇒ Object 



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# File 'lib/mothership/inputs.rb', line 33

def [](name, *args)
  get(name, @context, *args)
end

#forget(name) ⇒ Object 



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# File 'lib/mothership/inputs.rb', line 86

def forget(name)
  @cache.delete(name)
  @inputs.delete(name)
end

#get(name, context, *args) ⇒ Object 



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# File 'lib/mothership/inputs.rb', line 37

def get(name, context, *args)
  return @cache[name] if @cache.key? name

  meta = @command.inputs[name]
  return unless meta

  if @inputs.key?(name) && @inputs[name] != []
    val =
      if convert = meta[:from_given]
        if @inputs[name].is_a?(Array)
          @inputs[name].collect do |i|
            @context.instance_exec(i, *args, &convert)
          end
        else
          @context.instance_exec(@inputs[name], *args, &convert)
        end
      else
        @inputs[name]
      end

    return @cache[name] = val
  end

  val =
    if meta[:default].respond_to? :to_proc
      unless context
        raise "no context for input request"
      end

      context.instance_exec(*args, &meta[:default])
    elsif meta[:default]
      meta[:default]
    elsif meta[:type] == :boolean
      false
    elsif meta[:argument] == :splat
      if meta[:singular] && single = @inputs[meta[:singular]]
        [single]
      else
        []
      end
    end

  unless meta[:forget]
    @cache[name] = val
  end

  val
end

#given(name) ⇒ Object 



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# File 'lib/mothership/inputs.rb', line 16

def given(name)
  @inputs[name]
end

#given?(name) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mothership/inputs.rb', line 12

def given?(name)
  @inputs.key?(name)
end

#merge(inputs) ⇒ Object 



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# File 'lib/mothership/inputs.rb', line 20

def merge(inputs)
  self.class.new(@command, @context, @inputs.merge(inputs))
end

#without(*names) ⇒ Object 



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# File 'lib/mothership/inputs.rb', line 24

def without(*names)
  inputs = @inputs.dup
  names.each do |n|
    inputs.delete(n)
  end

  self.class.new(@command, @context, inputs)
end