Class: Smartdown::Engine::Transition

Inherits:
Object
  • Object
show all
Defined in:
lib/smartdown/engine/transition.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(state, node, input, options = {}) ⇒ Transition

Returns a new instance of Transition.



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# File 'lib/smartdown/engine/transition.rb', line 9

def initialize(state, node, input, options = {})
  @state = state
  @node = node
  @input = input
  @predicate_evaluator = options[:predicate_evaluator] || PredicateEvaluator.new
end

Instance Attribute Details

#input ⇒ Object (readonly)

Returns the value of attribute input.



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# File 'lib/smartdown/engine/transition.rb', line 7

def input
  @input
end

#node ⇒ Object (readonly)

Returns the value of attribute node.



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# File 'lib/smartdown/engine/transition.rb', line 7

def node
  @node
end

#state ⇒ Object (readonly)

Returns the value of attribute state.



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# File 'lib/smartdown/engine/transition.rb', line 7

def state
  @state
end

Instance Method Details

#next_node ⇒ Object 



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# File 'lib/smartdown/engine/transition.rb', line 16

def next_node
  next_node_from_next_node_rules ||
    next_node_from_start_button ||
    raise(Smartdown::Engine::IndeterminateNextNode, "No next node rules defined for '#{node.name}'", caller)
end

#next_state ⇒ Object 



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# File 'lib/smartdown/engine/transition.rb', line 22

def next_state
  state_with_input
    .put(:path, state.get(:path) + [node.name])
    .put(:responses, state.get(:responses) + [input])
    .put(input_variable_name, input)
    .put(:current_node, next_node)
end