Class: Tacky

Inherits:
Object
  • Object
show all
Defined in:
lib/tacky.rb

Overview

Tacky is a simple decorator of an existing object that makes all of its methods cache all values and calculate them only once.

For more information read README file.

Author

Yegor Bugayenko ([email protected])

Copyright

Copyright © 2020-2023 Yegor Bugayenko

License

MIT

Constant Summary collapse

STOP =

Deep nesting will stop at these classes.

[
  Numeric, NilClass,
  TrueClass, FalseClass,
  Array, Hash,
  Time,
  String
].freeze

Instance Method Summary collapse

Constructor Details

#initialize(origin, deep: true) ⇒ Tacky

Returns a new instance of Tacky.



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# File 'lib/tacky.rb', line 46

def initialize(origin, deep: true)
  @origin = origin
  @cache = {}
  @deep = deep
  @mutex = Mutex.new
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(*args) ⇒ Object 



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# File 'lib/tacky.rb', line 53

def method_missing(*args)
  @mutex.synchronize do
    unless @cache.key?(args)
      @cache[args] = @origin.__send__(*args) do |*a|
        yield(*a) if block_given?
      end
      @cache[args] = Tacky.new(@cache[args], deep: @deep) if @deep && STOP.none? { |t| @cache[args].is_a?(t) }
    end
    @cache[args]
  end
end

Instance Method Details

#respond_to?(method, include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tacky.rb', line 65

def respond_to?(method, include_private = false)
  @origin.respond_to?(method, include_private)
end

#respond_to_missing?(_method, _include_private = false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/tacky.rb', line 69

def respond_to_missing?(_method, _include_private = false)
  true
end