Method: Puppet::Pops::Types::TypeMismatchDescriber#signature_string

Defined in:
lib/puppet/pops/types/type_mismatch_describer.rb

#signature_string(signature) ⇒ Object

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future.

Produces a string for the signature(s)



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# File 'lib/puppet/pops/types/type_mismatch_describer.rb', line 1041

def signature_string(signature)
  param_types = signature.type.param_types
  param_names = signature.parameter_names

  from, to = param_types.size_range
  if from == 0 && to == 0
    # No parameters function
    return ''
  end

  required_count = from
  types =
    case param_types
    when PTupleType
      param_types.types
    when PArrayType
      [param_types.element_type]
    end

  # join type with names (types are always present, names are optional)
  # separate entries with comma
  #
  param_names = Array.new(types.size, '') if param_names.empty?
  limit = param_names.size
  result = param_names.each_with_index.map do |name, index|
    type = types[index] || types[-1]
    indicator = ''
    if to == Float::INFINITY && index == limit - 1
      # Last is a repeated_param.
      indicator = from == param_names.size ? '+' : '*'
    elsif optional(index, required_count)
      indicator = '?'
      type = type.optional_type if type.is_a?(POptionalType)
    end
    "#{type} #{name}#{indicator}"
  end.join(', ')

  # If there is a block, include it
  case signature.type.block_type
  when POptionalType
    result << ', ' unless result == ''
    result << "#{signature.type.block_type.optional_type} #{signature.block_name}?"
  when PCallableType
    result << ', ' unless result == ''
    result << "#{signature.type.block_type} #{signature.block_name}"
  when NilClass
    # nothing
  end
  result
end