Class: PersonifyLanguage::Function

Inherits:
Treetop::Runtime::SyntaxNode
  • Object
show all
Defined in:
lib/personify/parser/personify_node_classes.rb

Instance Method Summary collapse

Instance Method Details

#eval(env = {}) ⇒ Object 



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# File 'lib/personify/parser/personify_node_classes.rb', line 84

def eval(env={})
  if env.respond_to?(:allow_method?) && env.allow_method?(key.to_s)
    fn = env.method(key.to_s)
  else 
    fn = self.key.eval(env)
  end
  
  if fn && fn.respond_to?(:call)
    params = self.function_parameters(env)
    if fn.arity >= 0
      params = params[0,fn.arity]
    end
    fn.call(*params)
  else
    fn
  end
rescue StandardError
  return nil
end

#function_parameters(env) ⇒ Object 



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# File 'lib/personify/parser/personify_node_classes.rb', line 104

def function_parameters(env)
  values = parameters.eval(env)
  values << self.block.eval(env) if self.block.kind_of?(Block)
  values    
end