Class: Dry::Effects::Stack

Inherits:
Object
  • Object
show all
Extended by:
Initializer
Includes:
Enumerable
Defined in:
lib/dry/effects/stack.rb

Instance Method Summary collapse

Methods included from Initializer

extended

Instance Method Details

#call(effect) ⇒ Object 



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# File 'lib/dry/effects/stack.rb', line 12

def call(effect)
  if effect.is_a?(Effect) && (provider = provider(effect))
    if effect.keywords.empty?
      provider.public_send(effect.name, *effect.payload)
    else
      provider.public_send(effect.name, *effect.payload, **effect.keywords)
    end
  else
    yield
  end
rescue ::Exception => e # rubocop:disable Lint/RescueException
  Instructions::Raise.new(e)
end

#dup ⇒ Object 



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# File 'lib/dry/effects/stack.rb', line 49

def dup
  Stack.new(map(&:dup))
end

#each(&block) ⇒ Object 



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# File 'lib/dry/effects/stack.rb', line 37

def each(&block)
  providers.each(&block)
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/dry/effects/stack.rb', line 45

def empty?
  providers.empty?
end

#provider(effect) ⇒ Object 



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# File 'lib/dry/effects/stack.rb', line 33

def provider(effect)
  find { _1.provide?(effect) }
end

#push(provider) ⇒ Object 



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# File 'lib/dry/effects/stack.rb', line 26

def push(provider)
  providers.unshift(provider)
  yield
ensure
  providers.shift
end

#size ⇒ Object 



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# File 'lib/dry/effects/stack.rb', line 41

def size
  providers.size
end

#to_s ⇒ Object Also known as: inspect 



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# File 'lib/dry/effects/stack.rb', line 53

def to_s
  if empty?
    "#<Dry::Effects::Stack>"
  else
    stack = map(&:represent).reverse.join("->")

    "#<Dry::Effects::Stack #{stack}>"
  end
end