Module: CallableTree::Node::Hooks::Caller

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

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#after_caller_callbacks ⇒ Object 



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# File 'lib/callable_tree/node/hooks/caller.rb', line 91

def after_caller_callbacks
  @after_caller_callbacks ||= []
end

#around_caller_callbacks ⇒ Object 



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# File 'lib/callable_tree/node/hooks/caller.rb', line 87

def around_caller_callbacks
  @around_caller_callbacks ||= []
end

#before_caller_callbacks ⇒ Object 



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# File 'lib/callable_tree/node/hooks/caller.rb', line 83

def before_caller_callbacks
  @before_caller_callbacks ||= []
end

Class Method Details

.included(_subclass) ⇒ Object

Raises:



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

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

Instance Method Details

#after_call(&block) ⇒ Object Also known as: after_caller 



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

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

#after_call!(&block) ⇒ Object Also known as: after_caller! 



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

def after_call!(&block)
  after_caller_callbacks << block
  self
end

#around_call(&block) ⇒ Object Also known as: around_caller 



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

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

#around_call!(&block) ⇒ Object Also known as: around_caller! 



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

def around_call!(&block)
  around_caller_callbacks << block
  self
end

#before_call(&block) ⇒ Object Also known as: before_caller 



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

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

#before_call!(&block) ⇒ Object Also known as: before_caller! 



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

def before_call!(&block)
  before_caller_callbacks << block
  self
end

#call(*inputs, **options) ⇒ Object 



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# File 'lib/callable_tree/node/hooks/caller.rb', line 45

def call(*inputs, **options)
  input_head, *input_tail = inputs

  input_head = before_caller_callbacks.reduce(input_head) do |input_head, callable|
    callable.call(input_head, *input_tail, **options, _node_: self)
  end

  output =
    if around_caller_callbacks.empty?
      super(input_head, *input_tail, **options)
    else
      around_caller_callbacks_head, *around_caller_callbacks_tail = around_caller_callbacks
      caller = proc { super(input_head, *input_tail, **options) }

      output =
        around_caller_callbacks_head
        .call(
          input_head,
          *input_tail,
          **options,
          _node_: self
        ) { caller.call }

      around_caller_callbacks_tail.reduce(output) do |output, callable|
        callable.call(
          input_head,
          *input_tail,
          **options,
          _node_: self
        ) { output }
      end
    end

  after_caller_callbacks.reduce(output) do |output, callable|
    callable.call(output, **options, _node_: self)
  end
end