Class: SmashTheState::Operation::ValidationStep

Inherits:
Step
  • Object
show all
Defined in:
lib/smash_the_state/operation/validation_step.rb

Instance Attribute Summary collapse

Attributes inherited from Step

#error_handler, #name, #options

Instance Method Summary collapse

Methods inherited from Step

#side_effect_free?

Constructor Details

#initialize(options = {}) ⇒ ValidationStep

Returns a new instance of ValidationStep.



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# File 'lib/smash_the_state/operation/validation_step.rb', line 6

def initialize(options = {})
  @name            = :validate
  @implementations = []
  @options         = {
    side_effect_free: true
  }.merge(options)
end

Instance Attribute Details

#implementations ⇒ Object

Returns the value of attribute implementations.



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# File 'lib/smash_the_state/operation/validation_step.rb', line 4

def implementations
  @implementations
end

Instance Method Details

#add_implementation(&block) ⇒ Object 



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# File 'lib/smash_the_state/operation/validation_step.rb', line 14

def add_implementation(&block)
  tap do
    @implementations << block
  end
end

#dup ⇒ Object 



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# File 'lib/smash_the_state/operation/validation_step.rb', line 38

def dup
  # it's not enough to duplicate the step, we should also duplicate our
  # implementations. otherwise the list of implementations will be shared
  super.tap do |s|
    s.implementations = s.implementations.dup
  end
end

#implementation ⇒ Object 



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# File 'lib/smash_the_state/operation/validation_step.rb', line 20

def implementation
  blocks = @implementations

  proc do
    # self here should be a state
    blocks.reduce(self) do |memo, i|
      memo.class_eval(&i)
    end
  end
end

#validate!(state) ⇒ Object 



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# File 'lib/smash_the_state/operation/validation_step.rb', line 31

def validate!(state)
  state.tap do
    SmashTheState::Operation::State.
      eval_validation_directives_block(state, &implementation)
  end
end