Exception: Rus3::Error

Inherits:

StandardError

• Object
• StandardError
• Rus3::Error

Includes:

EmptyList

Defined in:

lib/rus3/error.rb

Direct Known Subclasses

CannotFindFileError, CharRequiredError, ExceedUpperLimitError, IntegerRequiredError, ListRequiredError, NotImplementedYetError, NumberRequiredError, OutOfRangeError, PairOrListRequiredError, PairRequiredError, RealNumberRequiredError, SchemeSyntaxError, StringRequiredError, UknownOperatorError, UnsupportedFeatureError, UnsupportedMethodError, VectorRequiredError, WrongTypeError

Constant Summary

A2L_MAP =

:nodoc:

{ "[" => "(", "," => "", "]" => ")"}

Constants included from EmptyList

Rus3::EmptyList::EMPTY_LIST

Instance Method Summary

• #smart_error_value(obj) ⇒ Object

  :nodoc:.

Methods included from EmptyList

#null?

Instance Method Details

#smart_error_value(obj) ⇒ Object

:nodoc:

# File 'lib/rus3/error.rb', line 7

def smart_error_value(obj)  # :nodoc:
  case obj
  when Array
    if obj.empty?           # an empty list
      "()"
    else                    # a normal proper list
      list_notation = obj.to_s().gsub(/[\[\],]/, A2L_MAP)
      "list( %s )" % list_notation
    end
  when Numeric
    "number(%d)" % obj
  when Rus3::Pair
    "pair(%s)" % obj
  when Rus3::Vector
    "vector(%s)" % obj
  else
    "%s(%s)" % [obj.class, obj]
  end
end