Class: Delorean::BlockExpression

Inherits:
SNode
  • Object
show all
Defined in:
lib/delorean/nodes.rb

Instance Method Summary collapse

Instance Method Details

#check(context) ⇒ Object 



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# File 'lib/delorean/nodes.rb', line 516

def check(context, *)
  if respond_to?(:al)
    al.text_value.empty? ? [] : al.check(context)
  end

  b_args.elements.each do |element|
    element.check(context)
    element.force_def(context)
  end

  result_formula = formulas.find do |formula|
    formula.i.text_value == 'result'
  end

  unless result_formula
    raise Delorean::ParseError.new(
      'result formula is required in blocks',
      context.module_name,
      context.line_no
    )
  end

  expressions.elements.each do |element|
    element.check(context)
  end

  b_args.elements.each do |element|
    element.force_undef(context)
  end
end

#formulas ⇒ Object 



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# File 'lib/delorean/nodes.rb', line 547

def formulas
  expressions.elements.select do |elem|
    elem.is_a? BlockFormula
  end
end

#rewrite(context, vcode) ⇒ Object 



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# File 'lib/delorean/nodes.rb', line 553

def rewrite(context, vcode)
  if !respond_to?(:al) || al.text_value.empty?
    args_str = ''
    arg_count = 0
  else
    args_str = al.rewrite(context)
    arg_count = al.arg_count
  end

  if vcode.is_a?(ClassText)
    # FIXME: Do we really need this check here?
    # ruby class call
    class_name = vcode.text
    context.parse_check_call_fn(i.text_value, arg_count, class_name)
  end

  b_args.elements.each do |element|
    element.force_def(context)
  end

  formulas.each do |element|
    element.force_def(context)
  end

  block_args_str = if b_args.elements.any?
                     block_args = b_args.elements.map do |v|
                       v.rewrite(context)
                     end

                     "|#{block_args.join(', ')}|"
                   else
                     ''
                   end

  expr_arr = expressions.elements.map do |v|
    v.rewrite(context)
  end + ["result#{POST}"]

  expression_str = expr_arr.join('; ')

  b_args.elements.each do |element|
    element.force_undef(context)
  end

  formulas.each do |element|
    element.force_undef(context)
  end

  block = "{ #{block_args_str} #{expression_str} }"

  "_instance_call(#{vcode}, '#{i.text_value}', [#{args_str}], _e) #{block}"
end