A Small Lisp interpreter in Java.

Build in functions are:

• (car x), (first x)
• (cdr x), (rest x)
• (cons x y)
• (atom x)
• (eq x)
• (quote x) or 'x
• (null x)
• (numberp x)
• (cond (P-1 S-1) (P-2 S-2) ...(P-n S-n))
• (if P S-1 S-2)
• (lambda ("arg1" "arg2" ..."argn") S)
• (defun "name" ("arg1" "arg2" ..."argn") S1 S2 ... Sn)
• (setf var-1 val-1 var-2 val-2 ... var-n val-n)
• (setf (get "symbol-name" "attribute-name") val)
• (get "symbol-name" "attribute-name")
• (apply "name" arg-list)
• (list x1 x2 ... xn)
• (+ x1 x2), (+ x1 x2 ... xn)
• (* x1 x2), (* x1 x2 ... xn)
• (- x1 x2), (/ x1 x2)
• (= x1 x2), (< x1 x2), (> x1 x2), (<= x1 x2), (>= x1 x2), (<> x1 x2)

You also can share lisp programming with your friends on a wiki page. The following page has examples of wiki pages.

Lisp Programming on a wiki page

The source programs

• LispGui.java

  GUI of this interpreter.

• ALisp.java

  The interpreter, eval and others. The method run, in this class, is a read-eval-print loop in the usual Lisp interpreter.

• ReadS.java

  The Reader of this interpreter. This class translate an S expression into an internal LispObject.

  • input: CQueue in
  • output: LispObject x

• PrintS.java

  The Writer of this interpreter. This class translate an internal LispObject into an S expression.

• LispObject.java

  The class for internal expression of a lisp object. This class is the super class of all lisp object class.

• Atom.java

  The class for internal expression of an atom. This class is a subclass of the LispObject.

• ListCell.java

  The class for internal expression of a list cell. This class is a subclass of the LispObject.

• Symbol.java

  The class for internal expression of a symbol(name). This class is a subclass of the Atom.

• MyNumber.java

  The class for internal expression of a number. This class is a subclass of the Atom.

• CQueue.java

  The class for (input) queue.

• CList.java

  The class for a characters list. this class is used in the definition of CQueue.