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Contents?: true
Size: 1.09 KB
Versions: 9
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Contents
module Tdc
module ExtendedAttributes
#
# Knows the class instances that interpret extended attribute values.
#
class InterpreterRegistry
include Singleton
def self.register(interpreter:)
instance.register_interpreter(interpreter)
end
def initialize
@interpreters = []
end
def clear
@interpreters = []
end
def interpreters
@interpreters.empty? ? [default_interpreter] : @interpreters
end
def register_interpreter(interpreter)
raise Tdc::FatalError, <<~MSG.chomp unless interpreter.is_a?(Tdc::ExtendedAttributes::InterpreterBase)
Cannot register an interpreter unless it inherits from Tdc::ExtendedAttributes::InterpreterBase
MSG
# Avoid registering the same class of interpreter a second time.
return if @interpreters.map(&:class).include?(interpreter.class)
@interpreters << interpreter
end
private
def default_interpreter
@_default_interpreter ||= Tdc::ExtendedAttributes::DefaultInterpreter.new
end
end
end
end
Version data entries
9 entries across 9 versions & 1 rubygems