Class: Swarm::ExpressionEvaluator

Inherits:
Object
  • Object
show all
Extended by:
Forwardable
Defined in:
lib/swarm/evaluation/expression_evaluator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(expression) ⇒ ExpressionEvaluator

Returns a new instance of ExpressionEvaluator.



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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 10

def initialize(expression)
  @expression = expression
end

Instance Attribute Details

#expression ⇒ Object (readonly)

Returns the value of attribute expression.



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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 7

def expression
  @expression
end

Instance Method Details

#all_conditions_met? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 22

def all_conditions_met?
  conditions.all? { |type, exp|
    check_condition(type, exp)
  }
end

#check_condition(type, exp) ⇒ Object 



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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 28

def check_condition(type, exp)
  unless ["if", "unless"].include?(type)
    raise ArgumentError.new("Not a conditional")
  end
  result = eval(exp)
  type == "if" ? result : !result
end

#conditions ⇒ Object 



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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 36

def conditions
  Swarm::Support.slice(arguments, "if", "unless")
end

#eval(string) ⇒ Object 



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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 18

def eval(string)
  workitem_context.instance_eval(string)
end

#workitem_context ⇒ Object 



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# File 'lib/swarm/evaluation/expression_evaluator.rb', line 14

def workitem_context
  @workitem_context ||= WorkitemContext.new(workitem)
end