Class: Orthoses::ActiveSupport::ClassAttribute

Inherits:
Object
  • Object
show all
Defined in:
lib/orthoses/active_support/class_attribute.rb

Overview

class Class

# >= v5.2
def class_attribute(*attrs)
# <= v6.0
def class_attribute(*attrs, instance_accessor: true,
  instance_reader: instance_accessor, instance_writer: instance_accessor, instance_predicate: true, default: nil)

Instance Method Summary collapse

Constructor Details

#initialize(loader, if: nil) ⇒ ClassAttribute

Returns a new instance of ClassAttribute.



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# File 'lib/orthoses/active_support/class_attribute.rb', line 12

def initialize(loader, if: nil)
  @loader = loader
  @if = binding.local_variable_get(:if)
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/orthoses/active_support/class_attribute.rb', line 17

def call
  lazy_tracer = Orthoses::CallTracer::Lazy.new

  store = lazy_tracer.trace('Class#class_attribute') do
    @loader.call
  end

  lazy_tracer.captures.each do |capture|
    receiver_name = Orthoses::Utils.module_name(capture.method.receiver)
    next unless receiver_name

    methods = []
    if ::ActiveSupport::VERSION::MAJOR < 6
      options = capture.argument[:attrs].extract_options!
      capture.argument[:instance_reader]    = options.fetch(:instance_accessor, true) && options.fetch(:instance_reader, true)
      capture.argument[:instance_writer]    = options.fetch(:instance_accessor, true) && options.fetch(:instance_writer, true)
      capture.argument[:instance_predicate] = options.fetch(:instance_predicate, true)
      capture.argument[:default_value]      = options.fetch(:default, nil)
    end

    content = store[receiver_name]

    capture.argument[:attrs].each do |name|
      next unless @if.nil? || @if.call(method, name)

      # skip internal attribute
      next if name.to_s.start_with?("_")
      next if name == :attribute_type_decorations
      next if name == :attributes_to_define_after_schema_loads

      methods << "def self.#{name}: () -> untyped"
      methods << "def self.#{name}?: () -> bool" if capture.argument[:instance_predicate]
      methods << "def self.#{name}=: (untyped value) -> untyped"
      methods << "def #{name}: () -> untyped" if capture.argument[:instance_reader]
      methods << "def #{name}?: () -> bool" if capture.argument[:instance_predicate] && capture.argument[:instance_reader]
      methods << "def #{name}=: (untyped value) -> untyped" if capture.argument[:instance_writer]
      # In RBS, `foo=` and attr_writer :foo cannot live together.
      content.body.delete_if { |line| line.start_with?("attr_writer #{name}:") }
    end
    next if methods.empty?

    content.concat(methods)
  end

  store
end