Class: Lisp::EofObject

Inherits:
Atom show all
Defined in:
lib/rubylisp/eof_object.rb

Instance Attribute Summary

Attributes inherited from Atom

#value

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Atom

#all?, #apply_to, #car, #cdr, #character?, #class?, #copy, #doc, #environment?, #eq?, #equal?, #eqv?, #evaluate, #false?, #frame?, #function?, #length, #lisp_object?, #list?, #macro?, #negative?, #number?, #object?, #pair?, #port?, #positive?, #primitive?, #print_string, #quoted, #set!, #set_location, #special?, #string?, #symbol?, #true?, #vector?, #zero?

Constructor Details

#initialize ⇒ EofObject

Returns a new instance of EofObject.



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# File 'lib/rubylisp/eof_object.rb', line 9

def initialize()
end

Class Method Details

.instance ⇒ Object 



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# File 'lib/rubylisp/eof_object.rb', line 5

def self.instance
  @instance ||= self.new()
end

Instance Method Details

#eof_object? ⇒ Boolean

Returns:



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# File 'lib/rubylisp/eof_object.rb', line 16

def eof_object?
  true
end

#to_s ⇒ Object 



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# File 'lib/rubylisp/eof_object.rb', line 20

def to_s
  "<EOF>"
end

#type ⇒ Object 



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# File 'lib/rubylisp/eof_object.rb', line 12

def type
  :eof_object
end