class Spank::Container

Public Class Methods

new() click to toggle source
# File lib/spank/container.rb, line 3
def initialize
  @items = {}
  register(:container) { self }
end

Public Instance Methods

build(type) click to toggle source
# File lib/spank/container.rb, line 22
def build(type)
  try("I could not create: #{type}"){ build!(type) }
end
build!(type) click to toggle source
# File lib/spank/container.rb, line 26
def build!(type)
  constructor = type.instance_method('initialize')
  parameters = constructor.parameters.map do |req, parameter|
    resolve(parameter.to_sym)
  end
  type.send(:new, *parameters)
end
register(key, &block) click to toggle source
# File lib/spank/container.rb, line 8
def register(key, &block)
  component = Component.new(key, &block)
  components_for(key).push(component)
  component
end
resolve(key) click to toggle source
# File lib/spank/container.rb, line 14
def resolve(key)
  instantiate(components_for(key).first, key)
end
resolve_all(key) click to toggle source
# File lib/spank/container.rb, line 18
def resolve_all(key)
  components_for(key).map {|item| instantiate(item, key) }
end

Private Instance Methods

components_for(key) click to toggle source
# File lib/spank/container.rb, line 36
def components_for(key)
  @items[key] = [] unless @items[key]
  @items[key]
end
instantiate(component, key) click to toggle source
# File lib/spank/container.rb, line 41
def instantiate(component, key)
  raise ContainerError.new("#{key} is not a registered component.") unless component
  component.create(self)
end
try(error = nil, &lambda) click to toggle source
# File lib/spank/container.rb, line 46
def try(error = nil, &lambda)
  begin
    lambda.call
  rescue => e
    raise Spank::ContainerError.new(error ||= "Oops: #{e}")
  end
end