Module: CallableTree::Node::Hooks::Terminator

Included in:
Root
Defined in:
lib/callable_tree/node/hooks/terminator.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#after_terminator_callbacks ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 82

def after_terminator_callbacks
  @after_terminator_callbacks ||= []
end

#around_terminator_callbacks ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 78

def around_terminator_callbacks
  @around_terminator_callbacks ||= []
end

#before_terminator_callbacks ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 74

def before_terminator_callbacks
  @before_terminator_callbacks ||= []
end

Class Method Details

.included(_subclass) ⇒ Object

Raises:



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 7

def self.included(_subclass)
  raise ::CallableTree::Error, "#{self} must be prepended"
end

Instance Method Details

#after_terminator(&block) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 29

def after_terminator(&block)
  clone.after_terminator!(&block)
end

#after_terminator!(&block) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 33

def after_terminator!(&block)
  after_terminator_callbacks << block
  self
end

#around_terminator(&block) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 20

def around_terminator(&block)
  clone.around_terminator!(&block)
end

#around_terminator!(&block) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 24

def around_terminator!(&block)
  around_terminator_callbacks << block
  self
end

#before_terminator(&block) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 11

def before_terminator(&block)
  clone.before_terminator!(&block)
end

#before_terminator!(&block) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 15

def before_terminator!(&block)
  before_terminator_callbacks << block
  self
end

#terminate?(output, *inputs, **options) ⇒ Boolean 



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# File 'lib/callable_tree/node/hooks/terminator.rb', line 38

def terminate?(output, *inputs, **options)
  output = before_terminator_callbacks.reduce(output) do |output, callable|
    callable.call(output, *inputs, **options, _node_: self)
  end

  terminated =
    if around_terminator_callbacks.empty?
      super(output, *inputs, **options)
    else
      around_terminator_callbacks_head, *around_terminator_callbacks_tail = around_terminator_callbacks
      terminator = proc { super(output, *inputs, **options) }

      terminated =
        around_terminator_callbacks_head
        .call(
          output,
          *inputs,
          **options,
          _node_: self
        ) { terminator.call }

      around_terminator_callbacks_tail.reduce(terminated) do |terminated, callable|
        callable.call(
          output,
          *inputs,
          **options,
          _node_: self
        ) { terminated }
      end
    end

  after_terminator_callbacks.reduce(terminated) do |terminated, callable|
    callable.call(terminated, **options, _node_: self)
  end
end