Class: Holotype::Attribute::Definition

Inherits:
Object
  • Object
show all
Defined in:
lib/holotype/attribute/definition.rb,
lib/holotype/attribute/definition/no_value_class_error.rb,
lib/holotype/attribute/definition/default_conflict_error.rb,
lib/holotype/attribute/definition/required_conflict_error.rb,
lib/holotype/attribute/definition/no_collection_class_error.rb

Defined Under Namespace

Classes: DefaultConflictError, NoCollectionClassError, NoValueClassError, RequiredConflictError

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, **options, &default_block) ⇒ Definition

Returns a new instance of Definition.



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# File 'lib/holotype/attribute/definition.rb', line 15

def initialize name, **options, &default_block
  @collection = options.fetch :collection, false
  @immutable  = options.fetch :immutable, false
  @name       = name
  @read_only  = options.fetch :read_only, false
  @required   = options.fetch :required, false

  if options.key? :collection_class
    @collection           = true
    @has_collection_class = true
    @collection_class     = options[:collection_class]
  else
    if collection?
      @has_collection_class = true
      @collection_class     = Array
    else
      @has_collection_class = false
    end
  end

  if options.key? :value_class
    @has_value_class = true
    @value_class     = options[:value_class]
  else
    @has_value_class = false
  end

  if default_block
    raise DefaultConflictError.new  if options.key? :default
    raise RequiredConflictError.new if @required

    @default      = default_block
    @default_type = :dynamic
  elsif options.key? :default
    raise RequiredConflictError.new if @required

    @default      = options[:default]
    @default_type = :constant
  end
end

Instance Attribute Details

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/holotype/attribute/definition.rb', line 13

def name
  @name
end

Instance Method Details

#collection? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holotype/attribute/definition.rb', line 85

def collection?
  !!@collection
end

#collection_class ⇒ Object 



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# File 'lib/holotype/attribute/definition.rb', line 93

def collection_class
  return @collection_class if has_collection_class?
  raise NoCollectionClassError.new self
end

#default(receiver) ⇒ Object 



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# File 'lib/holotype/attribute/definition.rb', line 56

def default receiver
  case @default_type
  when :constant then @default
  when :dynamic  then receiver.instance_exec(&@default).freeze
  else nil
  end
end

#has_collection_class? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holotype/attribute/definition.rb', line 89

def has_collection_class?
  @has_collection_class
end

#has_value_class? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holotype/attribute/definition.rb', line 76

def has_value_class?
  @has_value_class
end

#immutable? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holotype/attribute/definition.rb', line 102

def immutable?
  !!@immutable
end

#normalize(value) ⇒ Object 



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# File 'lib/holotype/attribute/definition.rb', line 64

def normalize value
  if collection?
    normalize_collection value
  else
    normalize_single value
  end
end

#read_only? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holotype/attribute/definition.rb', line 98

def read_only?
  !!@read_only
end

#required? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/holotype/attribute/definition.rb', line 72

def required?
  !!@required
end

#value_class ⇒ Object 



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# File 'lib/holotype/attribute/definition.rb', line 80

def value_class
  raise NoValueClassError.new self unless has_value_class?
  @value_class
end