Module: Trxl::FormalParameterList2

Defined in:
lib/trxl/trxl_grammar.rb

Instance Method Summary collapse

Instance Method Details

#bind(args, env = Environment.new) ⇒ Object 



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# File 'lib/trxl/trxl_grammar.rb', line 1630

def bind(args, env = Environment.new)
  if (a = args.length) < (f = variables.length)
    raise WrongNumberOfArgumentsException, "#{a} instead of #{f}"
  end
  env.merge!(variables.zip(args).inject({}) do |bindings, param|
    bindings.merge(param.first.name => param.last)
  end)
  # store arguments array in scope, javascript like
  env.merge!(:arguments => args)
end

#length ⇒ Object 



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# File 'lib/trxl/trxl_grammar.rb', line 1645

def length
  variables.length
end

#to_s(env = Environment.new) ⇒ Object 



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# File 'lib/trxl/trxl_grammar.rb', line 1649

def to_s(env = Environment.new)
  "(#{variables.map { |var| var.text_value }.join(',')})"
end

#variables ⇒ Object 



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# File 'lib/trxl/trxl_grammar.rb', line 1641

def variables
  [variable] + more_variables.elements.map { |e| e.variable }
end