Class: Puppet::Pops::Loader::TypeDefinitionInstantiator

Inherits:
Object
  • Object
show all
Defined in:
lib/puppet/pops/loader/type_definition_instantiator.rb

Class Method Summary collapse

Class Method Details

.create(loader, typed_name, source_ref, pp_code_string) ⇒ Object 



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# File 'lib/puppet/pops/loader/type_definition_instantiator.rb', line 6

def self.create(loader, typed_name, source_ref, pp_code_string)
  # parse and validate
  parser = Parser::EvaluatingParser.new()
  model = parser.parse_string(pp_code_string, source_ref)
  # Only one type is allowed (and no other definitions)

  name = typed_name.name
  case model.definitions.size
  when 0
    raise ArgumentError, _("The code loaded from %{source_ref} does not define the type '%{name}' - it is empty.") % { source_ref: source_ref, name: name }
  when 1
    # ok
  else
    raise ArgumentError,
      _("The code loaded from %{source_ref} must contain only the type '%{name}' - it has additional definitions.") % { source_ref: source_ref, name: name }
  end
  type_definition = model.definitions[0]

  unless type_definition.is_a?(Model::TypeAlias) || type_definition.is_a?(Model::TypeDefinition)
    raise ArgumentError,
      _("The code loaded from %{source_ref} does not define the type '%{name}' - no type alias or type definition found.") % { source_ref: source_ref, name: name }
  end

  actual_name = type_definition.name
  unless name == actual_name.downcase
    raise ArgumentError,
      _("The code loaded from %{source_ref} produced type with the wrong name, expected '%{name}', actual '%{actual_name}'") % { source_ref: source_ref, name: name, actual_name: actual_name }
  end

  unless model.body == type_definition
    raise ArgumentError,
      _("The code loaded from %{source_ref} contains additional logic - can only contain the type '%{name}'") % { source_ref: source_ref, name: name }
  end

  # Adapt the type definition with loader - this is used from logic contained in its body to find the
  # loader to use when resolving contained aliases API. Such logic have a hard time finding the closure (where
  # the loader is known - hence this mechanism
  private_loader = loader.private_loader
  Adapters::LoaderAdapter.adapt(type_definition).loader_name = private_loader.loader_name
  create_runtime_type(type_definition)
end

.create_from_model(type_definition, loader) ⇒ Object 



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# File 'lib/puppet/pops/loader/type_definition_instantiator.rb', line 48

def self.create_from_model(type_definition, loader)
  typed_name = TypedName.new(:type, type_definition.name)
  type = create_runtime_type(type_definition)
  loader.set_entry(
    typed_name,
    type,
    type_definition.locator.to_uri(type_definition))
  type
end

.create_named_type(name, type_name, type_expr, name_authority) ⇒ 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/loader/type_definition_instantiator.rb', line 72

def self.create_named_type(name, type_name, type_expr, name_authority)
  case type_name
  when 'Object'
    # No need for an alias. The Object type itself will receive the name instead
    type_expr = type_expr.keys.empty? ? nil : type_expr.keys[0] unless type_expr.is_a?(Hash)
    Types::PObjectType.new(name, type_expr)
  when 'TypeSet'
    # No need for an alias. The Object type itself will receive the name instead
    type_expr = type_expr.keys.empty? ? nil : type_expr.keys[0] unless type_expr.is_a?(Hash)
    Types::PTypeSetType.new(name, type_expr, name_authority)
  else
    Types::PTypeAliasType.new(name, type_expr)
  end
end

.create_runtime_type(type_definition) ⇒ 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/loader/type_definition_instantiator.rb', line 59

def self.create_runtime_type(type_definition)
  # Using the RUNTIME_NAME_AUTHORITY as the name_authority is motivated by the fact that the type
  # alias name (managed by the runtime) becomes the name of the created type
  #
  create_type(type_definition.name, type_definition.type_expr, Pcore::RUNTIME_NAME_AUTHORITY)
end

.create_type(name, type_expr, name_authority) ⇒ 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/loader/type_definition_instantiator.rb', line 67

def self.create_type(name, type_expr, name_authority)
  create_named_type(name, named_definition(type_expr), type_expr, name_authority)
end

.named_definition(te) ⇒ 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/loader/type_definition_instantiator.rb', line 88

def self.named_definition(te)
  te.is_a?(Model::AccessExpression) && (left = te.left_expr).is_a?(Model::QualifiedReference) ? left.cased_value : nil
end