module YARD::Templates::Helpers::TextHelper

def signature(meth)
  # use first overload tag if it has a return type and method itself does not
  if !meth.tag(:return) && meth.tag(:overload) && meth.tag(:overload).tag(:return)
    meth = meth.tag(:overload)
  end
  type = options.default_return || ""
  rmeth = meth
  if !rmeth.has_tag?(:return) && rmeth.respond_to?(:object)
    rmeth = meth.object
  end
  if rmeth.tag(:return) && rmeth.tag(:return).types
    types = rmeth.tags(:return).map {|t| t.types ? t.types : [] }.flatten.uniq
    first = types.first
    if types.size == 2 && types.last == 'nil'
      type = first + '?'
    elsif types.size == 2 && types.last =~ /^(Array)?<#{Regexp.quote types.first}>$/
      type = first + '+'
    elsif types.size > 2
      type = [first, '...'].join(', ')
    elsif types == ['void'] && options.hide_void_return
      type = ""
    else
      type = types.join(", ")
    end
  end
  type = "(#{type})" if type.include?(',')
  type = " -> #{type} " unless type.empty?
  scope = meth.scope == :class ? "#{meth.namespace.name}." : "#{meth.namespace.name.to_s.downcase}."
  name = meth.name
  blk = format_block(meth)
  args = format_args(meth)
  extras = []
  extras_text = ''
  rw = meth.namespace.attributes[meth.scope][meth.name]
  if rw
    attname = [rw[:read] ? 'read' : nil, rw[:write] ? 'write' : nil].compact
    attname = attname.size == 1 ? attname.join('') + 'only' : nil
    extras << attname if attname
  end
  extras << meth.visibility if meth.visibility != :public
  extras_text = '(' + extras.join(", ") + ')' unless extras.empty?
  title = "%s%s%s %s%s%s" % [scope, name, args, blk, type, extras_text]
  title.gsub(/\s+/, ' ')
end