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Contents
# frozen_string_literal: true
module Puppet::Pops
module Types
# Interface implemented by a type that has InvocableMembers
module TypeWithMembers
# @return [InvocableMember,nil] An invocable member if it exists, or `nil`
def [](member_name)
raise NotImplementedError, "'#{self.class.name}' should implement #[]"
end
end
# Interface implemented by attribute and function members
module InvocableMember
# Performs type checking of arguments and invokes the method that corresponds to this
# method. The result of the invocation is returned
#
# @param receiver [Object] The receiver of the call
# @param scope [Puppet::Parser::Scope] The caller scope
# @param args [Array] Array of arguments.
# @return [Object] The result returned by the member function or attribute
#
# @api private
def invoke(receiver, scope, args, &block)
raise NotImplementedError, "'#{self.class.name}' should implement #invoke"
end
end
# Plays the same role as an PAttribute in the PObjectType. Provides
# access to known attr_readers and plain reader methods.
class AttrReader
include InvocableMember
def initialize(message)
@message = message.to_sym
end
def invoke(receiver, scope, args, &block)
receiver.send(@message)
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems