Class: Humidifier::Loader::Compiler

Inherits:
Object
  • Object
show all
Defined in:
lib/humidifier/loader.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(specification) ⇒ Compiler

Returns a new instance of Compiler.



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# File 'lib/humidifier/loader.rb', line 10

def initialize(specification)
  @specification = specification

  # Set an initial value for each property types so that we can handle
  # cycles in the specification
  @property_types = specification["PropertyTypes"].to_h do |name, _|
    [name, {}]
  end
end

Instance Attribute Details

#property_types ⇒ Object (readonly)

Returns the value of attribute property_types.



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# File 'lib/humidifier/loader.rb', line 8

def property_types
  @property_types
end

#specification ⇒ Object (readonly)

Returns the value of attribute specification.



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# File 'lib/humidifier/loader.rb', line 8

def specification
  @specification
end

Instance Method Details

#compile ⇒ Object 



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# File 'lib/humidifier/loader.rb', line 20

def compile
  # Loop through every property type that's already defined and build up
  # each of the properties into the list
  property_types.each do |property_type_name, property_type|
    prefix = property_type_name.split(".", 2).first

    subspec = specification["PropertyTypes"].fetch(property_type_name)
    subspec.fetch("Properties") { {} }.each do |property_name, property|
      property = build_property(prefix, property_name, property)
      property_type[property.name] = property if property
    end
  end

  # Loop through every resource type in the specification and define a
  # class for each one dynamically.
  specification["ResourceTypes"].each do |aws_name, resource_type|
    _top, group, resource = aws_name.split("::")

    properties = {}
    resource_type["Properties"].each do |property_name, property|
      property = build_property(aws_name, property_name, property)
      properties[property.name] = property if property
    end

    resource_class =
      Class.new(Resource) do
        self.aws_name = aws_name
        self.props = properties
      end

    group_module =
      if Humidifier.const_defined?(group)
        Humidifier.const_get(group)
      else
        Humidifier.const_set(group, Module.new)
      end

    Humidifier.registry[aws_name] =
      group_module.const_set(resource, resource_class)
  end

  Humidifier.registry.freeze
end