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xlisp2.arc
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INIT.LSP
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1985-01-01
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; get some more memory
(expand 1)
; some fake definitions for Common Lisp pseudo compatiblity
(setq symbol-function symbol-value)
(setq fboundp boundp)
(setq first car)
(setq second cadr)
(setq rest cdr)
; some more cxr functions
(defun caddr (x) (car (cddr x)))
(defun cadddr (x) (cadr (cddr x)))
; (when test code...) - execute code when test is true
(defmacro when (test &rest code)
`(cond (,test ,@code)))
; (unless test code...) - execute code unless test is true
(defmacro unless (test &rest code)
`(cond ((not ,test) ,@code)))
; (makunbound sym) - make a symbol be unbound
(defun makunbound (sym) (setq sym '*unbound*) sym)
; (objectp expr) - object predicate
(defun objectp (x) (eq (type x) 'OBJ))
; (filep expr) - file predicate
(defun filep (x) (eq (type x) 'FPTR))
; (unintern sym) - remove a symbol from the oblist
(defun unintern (sym) (cond ((member sym *oblist*)
(setq *oblist* (delete sym *oblist*))
t)
(t nil)))
; (mapcan ...)
(defmacro mapcan (&rest args) `(apply #'nconc (mapcar ,@args)))
; (mapcon ...)
(defmacro mapcon (&rest args) `(apply #'nconc (maplist ,@args)))
; (save fun) - save a function definition to a file
(defun save (fun)
(let* ((fname (strcat (symbol-name fun) ".lsp"))
(fp (openo fname)))
(cond (fp (print (cons (if (eq (car (eval fun)) 'lambda)
'defun
'defmacro)
(cons fun (cdr (eval fun)))) fp)
(close fp)
fname)
(t nil))))
; (debug) - enable debug breaks
(defun debug ()
(setq *breakenable* t))
; (nodebug) - disable debug breaks
(defun nodebug ()
(setq *breakenable* nil))
; initialize to enable breaks but no trace back
(setq *breakenable* t)
(setq *tracenable* nil)