Class: Foobara::TypeDeclarations::Dsl::Attributes

Inherits:
BasicObject
Defined in:
foobara-0.5.8/projects/typesystem/projects/type_declarations/src/dsl/attributes.rb

Overview

NOTE: when debugging stuff, it’s helpful to comment out the inheritance from BasicObject

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(attribute_name, *processor_symbols, **declaration, &block) ⇒ Object 



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# File 'projects/typesystem/projects/type_declarations/src/dsl/attributes.rb', line 55

def method_missing(attribute_name, *processor_symbols, **declaration, &block)
  unless respond_to_missing?(attribute_name)
    # :nocov:
    return super
    # :nocov:
  end

  _disable_method_missing do
    declaration = declaration.dup

    if block
      # TODO: technically, current namespace might have an overridden :array type so instead we
      # should lookup :array he to see if we get BuiltinTypes[:array] or not (or "::array" or not)
      if processor_symbols.first == :array
        type, *processor_symbols = processor_symbols
      end
    else
      type, *processor_symbols = processor_symbols

      unless type
        if processor_symbols.empty? && !declaration.empty?
          type = :attributes
          declaration = { element_type_declarations: declaration }
        else
          ::Kernel.raise NoTypeGivenError, "Expected a type but attribute #{attribute_name} was declared " \
                                           "without a type. (Perhaps you didn't mean for #{attribute_name} " \
                                           "to be an attribute?)"
        end
      end
    end

    processor_symbols.each do |processor_symbol|
      case processor_symbol
      when ::String
        description = processor_symbol

        if declaration.key?(:description)
          # :nocov:
          ::Kernel.raise ArgumentError, "Expected only one description but " \
                                        "got #{description.inspect} and #{declaration[:description].inspect}"
          # :nocov:
        end

        declaration[:description] = description
      when ::Symbol
        declaration[processor_symbol] = true
      else
        # :nocov:
        ::Kernel.raise ArgumentError, "expected a Symbol, got #{processor_symbol.inspect}"
        # :nocov:
      end
    end

    if declaration.delete(:required)
      _add_to_required(attribute_name)
    end

    if declaration.key?(:default)
      default = declaration.delete(:default)

      _add_to_defaults(attribute_name, default)
    end

    if declaration.empty? && !block
      _add_attribute(attribute_name, type)
    else
      declaration = if block
                      attributes_declaration =
                        Attributes.to_declaration(&block).declaration_data.merge(declaration)

                      if type == :array
                        {
                          type: :array,
                          element_type_declaration: attributes_declaration
                        }
                      else
                        attributes_declaration
                      end
                    else
                      declaration.merge(type:)
                    end

      _add_attribute(attribute_name, declaration)
    end

    _type_declaration

    AttributeCreated.new(attribute_name)
  end
end

Instance Attribute Details

#_method_missing_disabled ⇒ Object

Returns the value of attribute _method_missing_disabled.



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# File 'projects/typesystem/projects/type_declarations/src/dsl/attributes.rb', line 46

def _method_missing_disabled
  @_method_missing_disabled
end

Class Method Details

.to_declaration ⇒ Object 



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# File 'projects/typesystem/projects/type_declarations/src/dsl/attributes.rb', line 41

def to_declaration(&)
  new._to_declaration(&)
end

Instance Method Details

#_to_declaration ⇒ Object

Underscores are used in this class to free up more potential attribute names by assuming they generally won’t start with _ in real use.



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# File 'projects/typesystem/projects/type_declarations/src/dsl/attributes.rb', line 50

def _to_declaration(&)
  instance_exec(&)
  _type_declaration
end

#respond_to_missing?(method_name, private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'projects/typesystem/projects/type_declarations/src/dsl/attributes.rb', line 146

def respond_to_missing?(method_name, private = false)
  !_method_missing_disabled || super
end