Class: Puppet::Pops::Types::PObjectType

Inherits:
PMetaType show all
Defined in:
lib/puppet/pops/types/p_object_type.rb

Defined Under Namespace

Classes: PAnnotatedMember, PAttribute, PFunction

Constant Summary collapse

ATTRIBUTE_KIND_CONSTANT = 
'constant'.freeze
ATTRIBUTE_KIND_DERIVED = 
'derived'.freeze
ATTRIBUTE_KIND_GIVEN_OR_DERIVED = 
'given_or_derived'.freeze
TYPE_ATTRIBUTE_KIND = 
TypeFactory.enum(ATTRIBUTE_KIND_CONSTANT, ATTRIBUTE_KIND_DERIVED, ATTRIBUTE_KIND_GIVEN_OR_DERIVED)
TYPE_OBJECT_NAME = 
Pcore::TYPE_QUALIFIED_REFERENCE
TYPE_MEMBER_NAME = 
PPatternType.new([PRegexpType.new(Patterns::PARAM_NAME)])
TYPE_ATTRIBUTE = 
TypeFactory.struct({
  KEY_TYPE => PType::DEFAULT,
  KEY_ANNOTATIONS => TypeFactory.optional(TYPE_ANNOTATIONS),
  KEY_FINAL => TypeFactory.optional(PBooleanType::DEFAULT),
  KEY_OVERRIDE => TypeFactory.optional(PBooleanType::DEFAULT),
  KEY_KIND => TypeFactory.optional(TYPE_ATTRIBUTE_KIND),
  KEY_VALUE => PAnyType::DEFAULT
})
TYPE_ATTRIBUTES = 
TypeFactory.hash_kv(TYPE_MEMBER_NAME, TypeFactory.not_undef)
TYPE_ATTRIBUTE_CALLABLE = 
TypeFactory.callable(0,0)
TYPE_FUNCTION_TYPE = 
PType.new(PCallableType::DEFAULT)
TYPE_FUNCTION = 
TypeFactory.struct({
  KEY_TYPE => TYPE_FUNCTION_TYPE,
  KEY_ANNOTATIONS => TypeFactory.optional(TYPE_ANNOTATIONS),
  KEY_FINAL => TypeFactory.optional(PBooleanType::DEFAULT),
  KEY_OVERRIDE => TypeFactory.optional(PBooleanType::DEFAULT)
})
TYPE_FUNCTIONS = 
TypeFactory.hash_kv(TYPE_MEMBER_NAME, TypeFactory.not_undef)
TYPE_EQUALITY = 
TypeFactory.variant(TYPE_MEMBER_NAME, TypeFactory.array_of(TYPE_MEMBER_NAME))
TYPE_CHECKS =

TBD

PAnyType::DEFAULT
TYPE_OBJECT_I12N = 
TypeFactory.struct({
  KEY_NAME => TypeFactory.optional(TYPE_OBJECT_NAME),
  KEY_PARENT => TypeFactory.optional(PType::DEFAULT),
  KEY_ATTRIBUTES => TypeFactory.optional(TYPE_ATTRIBUTES),
  KEY_FUNCTIONS => TypeFactory.optional(TYPE_FUNCTIONS),
  KEY_EQUALITY => TypeFactory.optional(TYPE_EQUALITY),
  KEY_EQUALITY_INCLUDE_TYPE => TypeFactory.optional(PBooleanType::DEFAULT),
  KEY_CHECKS =>  TypeFactory.optional(TYPE_CHECKS),
  KEY_ANNOTATIONS =>  TypeFactory.optional(TYPE_ANNOTATIONS)
})
DEFAULT = 
PObjectType.new(EMPTY_HASH)

Constants included from Annotatable

Annotatable::TYPE_ANNOTATIONS, Annotatable::TYPE_ANNOTATION_KEY_TYPE, Annotatable::TYPE_ANNOTATION_VALUE_TYPE

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from PMetaType

#resolve, #resolve_hash, #resolve_literal_hash, #resolve_type_refs, #to_s

Methods included from Annotatable

#annotatable_accept, #init_annotatable

Methods inherited from PAnyType

#==, #assignable?, #callable?, #generalize, new_function, #normalize, #really_instance?, #resolve, #simple_name, simple_name, #to_alias_expanded_s, #to_s

Methods inherited from TypedModelObject

_ptype, create_ptype, register_ptypes

Methods included from PuppetObject

#_ptype

Constructor Details

#initialize(name, i12n_hash_expression) ⇒ PObjectType #initialize(i12n_hash) ⇒ PObjectType

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Initialize an Object Type instance. The initialization will use either a name and an initialization hash expression, or a fully resolved initialization hash.

Overloads:

  • #initialize(name, i12n_hash_expression) ⇒ PObjectType

    Used when the Object type is loaded using a type alias expression. When that happens, it is important that the actual resolution of the expression is deferred until all definitions have been made known to the current loader. The object will then be resolved when it is loaded by the TypeParser. “resolved” here, means that the hash expression is fully resolved, and then passed to the #initialize_from_hash method.

    Parameters:

    • name (String) —

      The name of the object

    • i12n_hash_expression (Model::LiteralHash) —

      The hash describing the Object features

  • #initialize(i12n_hash) ⇒ PObjectType

    Used when the object is created by the TypeFactory. The i12n_hash must be fully resolved.

    Parameters:

    • i12n_hash (Hash{String=>Object}) —

      The hash describing the Object features



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# File 'lib/puppet/pops/types/p_object_type.rb', line 361

def initialize(name_or_i12n_hash, i12n_hash_expression = nil)
  @attributes = EMPTY_HASH
  @functions = EMPTY_HASH

  if name_or_i12n_hash.is_a?(Hash)
    initialize_from_hash(name_or_i12n_hash)
  else
    @name = TypeAsserter.assert_instance_of('object name', TYPE_OBJECT_NAME, name_or_i12n_hash)
    @i12n_hash_expression = i12n_hash_expression
  end
end

Instance Attribute Details

#annotations ⇒ Object (readonly) 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 343

def annotations
  @annotations
end

#attributes(include_parent = false) ⇒ Hash{String=>PAttribute} (readonly)

Returns the attributes of this ‘Object` type. If include_parent is `true`, then all inherited attributes will be included in the returned `Hash`.

Parameters:

  • include_parent (Boolean) (defaults to: false) —

    ‘true` if inherited attributes should be included

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 703

def attributes
  @attributes
end

#checks ⇒ Object (readonly) 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 342

def checks
  @checks
end

#equality ⇒ Object (readonly) 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 341

def equality
  @equality
end

#functions(include_parent = false) ⇒ Hash{String=>PFunction} (readonly)

Returns the functions of this ‘Object` type. If include_parent is `true`, then all inherited functions will be included in the returned `Hash`.

Parameters:

  • include_parent (Boolean) (defaults to: false) —

    ‘true` if inherited functions should be included

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 729

def functions
  @functions
end

#name ⇒ Object (readonly) 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 337

def name
  @name
end

#parent ⇒ Object (readonly) 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 338

def parent
  @parent
end

Class Method Details

.register_ptype(loader, ir) ⇒ Object 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 63

def self.register_ptype(loader, ir)
  create_ptype(loader, ir, 'AnyType', 'i12n_hash' => TYPE_OBJECT_I12N)
end

Instance Method Details

#[](name) ⇒ Object 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 593

def [](name)
  member = @attributes[name] || @functions[name]
  if member.nil?
    rp = resolved_parent
    member = rp[name] if rp.is_a?(PObjectType)
  end
  member
end

#accept(visitor, guard) ⇒ Object 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 602

def accept(visitor, guard)
  guarded_recursion(guard, nil) do |g|
    super(visitor, g)
    @parent.accept(visitor, g) unless parent.nil?
    @attributes.values.each { |a| a.accept(visitor, g) }
    @functions.values.each { |f| f.accept(visitor, g) }
  end
end

#attr_reader_name(se) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 499

def attr_reader_name(se)
  if se.value_type.is_a?(PBooleanType) || se.value_type.is_a?(POptionalType) && se.value_type.type.is_a?(PBooleanType)
    "#{se.name}?"
  else
    se.name
  end
end

#callable_args?(callable, guard) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/types/p_object_type.rb', line 611

def callable_args?(callable, guard)
  @parent.nil? ? false : @parent.callable_args?(callable, guard)
end

#check_self_recursion(originator) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Assert that this type does not inherit from itself



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# File 'lib/puppet/pops/types/p_object_type.rb', line 736

def check_self_recursion(originator)
  unless @parent.nil?
    raise Puppet::Error, "The Object type '#{originator.label}' inherits from itself" if @parent.equal?(originator)
    @parent.check_self_recursion(originator)
  end
end

#create_i12n_type ⇒ PStructType

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Creates the type that a initialization hash used for creating instances of this type must conform to.

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 627

def create_i12n_type
  struct_elems = {}
  attributes(true).values.each do |attr|
    unless attr.kind == ATTRIBUTE_KIND_CONSTANT || attr.kind == ATTRIBUTE_KIND_DERIVED
      if attr.value?
        struct_elems[TypeFactory.optional(attr.name)] = attr.type
      else
        struct_elems[attr.name] = attr.type
      end
    end
  end
  TypeFactory.struct(struct_elems)
end

#create_new_function(loader) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 410

def create_new_function(loader)
  impl_class = implementation_class
  class_name = impl_class.name || "Anonymous Ruby class for #{name}"

  (param_names, param_types, required_param_count) = parameter_info

  # Create the callable with a size that reflects the required and optional parameters
  param_types << required_param_count
  param_types << param_names.size

  create_type = TypeFactory.callable(*param_types)
  from_hash_type = TypeFactory.callable(i12n_type, 1, 1)

  # Create and return a #new_XXX function where the dispatchers are added programmatically.
  Puppet::Functions.create_loaded_function(:"new_#{name}", loader) do

    # The class that creates new instances must be available to the constructor methods
    # and is therefore declared as a variable and accessor on the class that represents
    # this added function.
    @impl_class = impl_class

    def self.impl_class
      @impl_class
    end

    # It's recommended that an implementor of an Object type provides the method #from_asserted_hash.
    # This method should accept a hash and assume that type assertion has been made already (it is made
    # by the dispatch added here).
    if impl_class.respond_to?(:from_asserted_hash)
      dispatcher.add_dispatch(from_hash_type, :from_hash, ['hash'], nil, EMPTY_ARRAY, EMPTY_ARRAY, false)
      def from_hash(hash)
        self.class.impl_class.from_asserted_hash(hash)
      end
    end

    # Add the dispatch that uses the standard #new method on the class. It's assumed that the #new
    # method performs no assertions.
    dispatcher.add_dispatch(create_type, :create, param_names, nil, EMPTY_ARRAY, EMPTY_ARRAY, false)
    def create(*args)
      self.class.impl_class.new(*args)
    end
  end
end

#eql?(o) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/types/p_object_type.rb', line 657

def eql?(o)
  self.class == o.class &&
    @name == o.name &&
    @parent == o.parent &&
    @attributes == o.attributes &&
    @functions == o.functions &&
    @equality == o.equality &&
    @checks == o.checks
end

#equality_attributes ⇒ Hash{String=>PAttribute}

Returns the attributes that participate in equality comparison. Inherited equality attributes are included.

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 711

def equality_attributes
  all = {}
  collect_equality_attributes(all)
  all
end

#equality_include_type? ⇒ Boolean

Returns ‘true` if this type is included when comparing instances.

Returns:

  • (Boolean) —

    ‘true` if this type is included when comparing instances



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# File 'lib/puppet/pops/types/p_object_type.rb', line 719

def equality_include_type?
  @equality_include_type
end

#hash ⇒ Object 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 667

def hash
  @name.nil? ? [@parent, @attributes, @functions].hash : @name.hash
end

#i12n_hash(include_name = true) ⇒ Hash{String=>Object}

The i12n_hash is primarily intended for serialization and string representation purposes. It creates a hash suitable for passing to PObjectType#new(i12n_hash)

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 646

def i12n_hash(include_name = true)
  result = super()
  result[KEY_NAME] = @name if include_name && !@name.nil?
  result[KEY_PARENT] = @parent unless @parent.nil?
  result[KEY_ATTRIBUTES] = compressed_members_hash(@attributes) unless @attributes.empty?
  result[KEY_FUNCTIONS] = compressed_members_hash(@functions) unless @functions.empty?
  result[KEY_EQUALITY] = @equality unless @equality.nil?
  result[KEY_CHECKS] = @checks unless @checks.nil?
  result
end

#i12n_type ⇒ PStructType

Returns the type that a initialization hash used for creating instances of this type must conform to.

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 619

def i12n_type
  @i12n_type ||= create_i12n_type
end

#implementation_class ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 455

def implementation_class
  if @implementation_class.nil?
    impl_name = Loaders.implementation_registry.module_name_for_type(self)
    if impl_name.nil?
      # Use generator to create a default implementation
      @implementation_class = RubyGenerator.new.create_class(self)
    else
      # Can the mapping be loaded?
      class_name = impl_name[0]
      @implementation_class = ClassLoader.provide(class_name)

      raise Puppet::Error, "Unable to load class #{class_name}" if @implementation_class.nil?
      unless @implementation_class < PuppetObject || @implementation_class.respond_to?(:ecore)
        raise Puppet::Error, "Unable to create an instance of #{name}. #{class_name} does not include module #{PuppetObject.name}"
      end
    end
  end
  @implementation_class
end

#include_class_in_equality? ⇒ Boolean

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/types/p_object_type.rb', line 508

def include_class_in_equality?
  @equality_include_type && !(@parent.is_a?(PObjectType) && parent.include_class_in_equality?)
end

#initialize_from_hash(i12n_hash) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 513

def initialize_from_hash(i12n_hash)
  TypeAsserter.assert_instance_of('object initializer', TYPE_OBJECT_I12N, i12n_hash)

  # Name given to the loader have higher precedence than a name declared in the type
  @name ||= i12n_hash[KEY_NAME]
  @name.freeze unless @name.nil?

  @parent = i12n_hash[KEY_PARENT]

  parent_members = EMPTY_HASH
  parent_object_type = nil
  unless @parent.nil?
    check_self_recursion(self)
    rp = resolved_parent
    if rp.is_a?(PObjectType)
      parent_object_type = rp
      parent_members = rp.members(true)
    end
  end

  attr_specs = i12n_hash[KEY_ATTRIBUTES]
  unless attr_specs.nil? || attr_specs.empty?
    @attributes = Hash[attr_specs.map do |key, attr_spec|
      attr_spec = { KEY_TYPE => TypeAsserter.assert_instance_of(nil, PType::DEFAULT, attr_spec) { "attribute #{label}[#{key}]" } } unless attr_spec.is_a?(Hash)
      attr = PAttribute.new(key, self, attr_spec)
      [attr.name, attr.assert_override(parent_members)]
    end].freeze
  end

  func_specs = i12n_hash[KEY_FUNCTIONS]
  unless func_specs.nil? || func_specs.empty?
    @functions = Hash[func_specs.map do |key, func_spec|
      func_spec = { KEY_TYPE => TypeAsserter.assert_instance_of(nil, TYPE_FUNCTION_TYPE, func_spec) { "function #{label}[#{key}]" } } unless func_spec.is_a?(Hash)
      func = PFunction.new(key, self, func_spec)
      name = func.name
      raise Puppet::ParseError, "#{func.label} conflicts with attribute with the same name" if @attributes.include?(name)
      [name, func.assert_override(parent_members)]
    end].freeze
  end

  @equality_include_type = i12n_hash[KEY_EQUALITY_INCLUDE_TYPE]
  @equality_include_type = true if @equality_include_type.nil?

  equality = i12n_hash[KEY_EQUALITY]
  equality = [equality] if equality.is_a?(String)
  if equality.is_a?(Array)
    unless equality.empty?
      raise Puppet::ParseError, 'equality_include_type = false cannot be combined with non empty equality specification' unless @equality_include_type
      parent_eq_attrs = nil
      equality.each do |attr_name|

        attr = parent_members[attr_name]
        if attr.nil?
          attr = @attributes[attr_name] || @functions[attr_name]
        elsif attr.is_a?(PAttribute)
          # Assert that attribute is not already include by parent equality
          parent_eq_attrs ||= parent_object_type.equality_attributes
          if parent_eq_attrs.include?(attr_name)
            including_parent = find_equality_definer_of(attr)
            raise Puppet::ParseError, "#{label} equality is referencing #{attr.label} which is included in equality of #{including_parent.label}"
          end
        end

        unless attr.is_a?(PAttribute)
          raise Puppet::ParseError, "#{label} equality is referencing non existent attribute '#{attr_name}'" if attr.nil?
          raise Puppet::ParseError, "#{label} equality is referencing #{attr.label}. Only attribute references are allowed"
        end
        if attr.kind == ATTRIBUTE_KIND_CONSTANT
          raise Puppet::ParseError, "#{label} equality is referencing constant #{attr.label}. Reference to constant is not allowed in equality"
        end
      end
    end
    equality.freeze
  end
  @equality = equality

  @checks = i12n_hash[KEY_CHECKS]
  init_annotatable(i12n_hash)
end

#instance?(o, guard = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/types/p_object_type.rb', line 675

def instance?(o, guard = nil)
  assignable?(TypeCalculator.infer(o), guard)
end

#iterable?(guard = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/types/p_object_type.rb', line 679

def iterable?(guard = nil)
  @parent.nil? ? false : @parent.iterable?(guard)
end

#iterable_type(guard = nil) ⇒ Object 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 683

def iterable_type(guard = nil)
  @parent.nil? ? false : @parent.iterable_type(guard)
end

#kind_of_callable?(optional = true, guard = nil) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/puppet/pops/types/p_object_type.rb', line 671

def kind_of_callable?(optional=true, guard = nil)
  @parent.nil? ? false : @parent.kind_of_callable?(optional, guard)
end

#label ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 744

def label
  @name || '<anonymous object type>'
end

#members(include_parent = false) ⇒ Hash{String=>PAnnotatedMember}

Returns the members (attributes and functions) of this ‘Object` type. If include_parent is `true`, then all inherited members will be included in the returned `Hash`.

Parameters:

  • include_parent (Boolean) (defaults to: false) —

    ‘true` if inherited members should be included

Returns:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 693

def members(include_parent = false)
  get_members(include_parent, :both)
end

#new_function(loader) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 374

def new_function(loader)
  @new_function ||= create_new_function(loader)
end

#parameter_info(attr_readers = false) ⇒ (Array<String>, Array<PAnyType>, Integer)

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Returns array of parameter names, array of parameter types, and a count reflecting the required number of parameters.

Returns:

  • ((Array<String>, Array<PAnyType>, Integer)) —

    array of parameter names, array of parameter types, and a count reflecting the required number of parameters



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# File 'lib/puppet/pops/types/p_object_type.rb', line 477

def parameter_info(attr_readers = false)
  # Create a types and a names array where optional entries ends up last
  opt_types = []
  opt_names = []
  non_opt_types = []
  non_opt_names = []
  i12n_type.elements.each do |se|
    if se.key_type.is_a?(POptionalType)
      opt_names << (attr_readers ? attr_reader_name(se) : se.name)
      opt_types << se.value_type
    else
      non_opt_names << (attr_readers ? attr_reader_name(se) : se.name)
      non_opt_types << se.value_type
    end
  end
  param_names = non_opt_names + opt_names
  param_types = non_opt_types + opt_types

  [param_names, param_types, non_opt_types.size]
end

#read(value_count, deserializer) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Read an instance of this type from a deserializer

Parameters:

  • value_count (Integer) —

    the number attributes needed to create the instance

  • deserializer (Serialization::Deserializer) —

    the deserializer to read from

Returns:

  • (Object) —

    the created instance



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# File 'lib/puppet/pops/types/p_object_type.rb', line 397

def read(value_count, deserializer)
  reader.read(implementation_class, value_count, deserializer)
end

#reader=(reader) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Assign a new instance reader to this type

Parameters:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 381

def reader=(reader)
  @reader = reader
end

#resolved_parent ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'lib/puppet/pops/types/p_object_type.rb', line 749

def resolved_parent
  parent = @parent
  while parent.is_a?(PTypeAliasType)
    parent = parent.resolved_type
  end
  parent
end

#write(value, serializer) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Write an instance of this type using a serializer

Parameters:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 405

def write(value, serializer)
  writer.write(self, value, serializer)
end

#writer=(writer) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Assign a new instance write to this type

Parameters:



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# File 'lib/puppet/pops/types/p_object_type.rb', line 388

def writer=(writer)
  @writer = writer
end