X-Git-Url: https://git.gag.com/?a=blobdiff_plain;f=src%2Flisp%2Fao_lisp_const.lisp;h=861a4fc80eed91314a76453f63528fef4d21340e;hb=12a1f6ad48f2b924f71239effeb90afca75a090f;hp=37307a6877758938bb1f9258a701940770560c30;hpb=2e58b6c380bc6440490c47650fbf11d45b3f2e72;p=fw%2Faltos

diff --git a/src/lisp/ao_lisp_const.lisp b/src/lisp/ao_lisp_const.lisp
index 37307a68..861a4fc8 100644
--- a/src/lisp/ao_lisp_const.lisp
+++ b/src/lisp/ao_lisp_const.lisp
@@ -54,14 +54,23 @@
 					; basic list accessors
 
 
+(defun caar (l) (car (car l)))
+
 (defun cadr (l) (car (cdr l)))
 
 (defun caddr (l) (car (cdr (cdr l))))
 
-(defun nth (list n)
-  (cond ((= n 0) (car list))
-	((nth (cdr list) (1- n)))
-	)
+(define list-tail (lambda (x k)
+		    (if (zero? k)
+			x
+		      (list-tail (cdr x (- k 1)))
+		      )
+		    )
+  )
+
+(define list-ref (lambda (x k)
+		   (car (list-tail x k))
+		   )
   )
 
 					; simple math operators
@@ -69,6 +78,93 @@
 (defun 1+ (x) (+ x 1))
 (defun 1- (x) (- x 1))
 
+(define zero? (macro (value rest)
+		     (list
+		      eq?
+		      value
+		      0)
+		     )
+  )
+
+(zero? 1)
+(zero? 0)
+(zero? "hello")
+
+(define positive? (macro (value rest)
+			 (list
+			  >
+			  value
+			  0)
+			 )
+  )
+
+(positive? 12)
+(positive? -12)
+
+(define negative? (macro (value rest)
+			 (list
+			  <
+			  value
+			  0)
+			 )
+  )
+
+(negative? 12)
+(negative? -12)
+
+(defun abs (x) (cond ((>= x 0) x)
+		     (else (- x)))
+       )
+
+(abs 12)
+(abs -12)
+
+(define max (lexpr (first rest)
+		   (while (not (null? rest))
+		     (cond ((< first (car rest))
+			    (set! first (car rest)))
+			   )
+		     (set! rest (cdr rest))
+		     )
+		   first)
+  )
+
+(max 1 2 3)
+(max 3 2 1)
+
+(define min (lexpr (first rest)
+		   (while (not (null? rest))
+		     (cond ((> first (car rest))
+			    (set! first (car rest)))
+			   )
+		     (set! rest (cdr rest))
+		     )
+		   first)
+  )
+
+(min 1 2 3)
+(min 3 2 1)
+
+(defun even? (x) (zero? (% x 2)))
+
+(even? 2)
+(even? -2)
+(even? 3)
+(even? -1)
+
+(defun odd? (x) (not (even? x)))
+
+(odd? 2)
+(odd? -2)
+(odd? 3)
+(odd? -1)
+
+(define exact? number?)
+(defun inexact? (x) #f)
+
+					; (if <condition> <if-true>)
+					; (if <condition> <if-true> <if-false)
+
 (define if (macro (test args)
 	       (cond ((null? (cdr args))
 		      (list
@@ -130,16 +226,18 @@
 					; expressions to evaluate
 
 		   (set! make-exprs (lambda (vars exprs)
-				      (cond ((not (null? vars)) (cons
-						   (list set
-							 (list quote
-							       (car (car vars))
-							       )
-							 (cadr (car vars))
-							 )
-						   (make-exprs (cdr vars) exprs)
-						   )
-						  )
+				      (cond ((not (null? vars))
+					     (cons
+					      (list set
+						    (list quote
+							  (car (car vars))
+							  )
+						    (cond ((null? (cdr (car vars))) ())
+							  (else (cadr (car vars))))
+						    )
+					      (make-exprs (cdr vars) exprs)
+					      )
+					     )
 					    (exprs)
 					    )
 				      )
@@ -173,6 +271,7 @@
 
 (let ((x 1)) x)
 
+(define let* let)
 					; boolean operators
 
 (define or (lexpr (l)
@@ -208,6 +307,55 @@
 
 (and #t #f)
 
+
+(define append (lexpr (args)
+		      (let ((append-list (lambda (a b)
+					   (cond ((null? a) b)
+						 (else (cons (car a) (append-list (cdr a) b)))
+						 )
+					   )
+					 )
+			    (append-lists (lambda (lists)
+					    (cond ((null? lists) lists)
+						  ((null? (cdr lists)) (car lists))
+						  (else (append-list (car lists) (append-lists (cdr lists))))
+						  )
+					    )
+					  )
+			    )
+			(append-lists args)
+			)
+		      )
+  )
+
+(append '(a b c) '(d e f) '(g h i))
+
+(defun reverse (list)
+  (let ((result ()))
+    (while (not (null? list))
+      (set! result (cons (car list) result))
+      (set! list (cdr list))
+      )
+    result)
+  )
+
+(reverse '(1 2 3))
+
+(define list-tail
+  (lambda (x k)
+    (if (zero? k)
+	x
+      (list-tail (cdr x) (- k 1)))))
+
+(list-tail '(1 2 3) 2)
+
+(defun list-ref (x k) (car (list-tail x k)))
+
+(list-ref '(1 2 3) 2)
+
+    
+					; recursive equality
+
 (defun equal? (a b)
   (cond ((eq? a b) #t)
 	((and (pair? a) (pair? b))
@@ -220,3 +368,163 @@
 
 (equal? '(a b c) '(a b c))
 (equal? '(a b c) '(a b b))
+
+(defun _member (obj list test?)
+  (if (null? list)
+      #f
+    (if (test? obj (car list))
+	list
+      (memq obj (cdr list)))))
+
+(defun memq (obj list) (_member obj list eq?))
+
+(memq 2 '(1 2 3))
+
+(memq 4 '(1 2 3))
+
+(defun memv (obj list) (_member obj list eqv?))
+
+(memv 2 '(1 2 3))
+
+(memv 4 '(1 2 3))
+
+(defun member (obj list) (_member obj list equal?))
+
+(member '(2) '((1) (2) (3)))
+
+(member '(4) '((1) (2) (3)))
+
+(defun _assoc (obj list test?)
+  (if (null? list)
+      #f
+    (if (test? obj (caar list))
+	(car list)
+      (_assoc obj (cdr list) test?)
+      )
+    )
+  )
+
+(defun assq (obj list) (_assoc obj list eq?))
+(defun assv (obj list) (_assoc obj list eqv?))
+(defun assoc (obj list) (_assoc obj list equal?))
+
+(assq 'a '((a 1) (b 2) (c 3)))
+(assv 'b '((a 1) (b 2) (c 3)))
+(assoc '(c) '((a 1) (b 2) ((c) 3)))
+
+(define char? integer?)
+
+(char? #\q)
+(char? "h")
+
+(defun char-upper-case? (c) (<= #\A c #\Z))
+
+(char-upper-case? #\a)
+(char-upper-case? #\B)
+(char-upper-case? #\0)
+(char-upper-case? #\space)
+
+(defun char-lower-case? (c) (<= #\a c #\a))
+
+(char-lower-case? #\a)
+(char-lower-case? #\B)
+(char-lower-case? #\0)
+(char-lower-case? #\space)
+
+(defun char-alphabetic? (c) (or (char-upper-case? c) (char-lower-case? c)))
+
+(char-alphabetic? #\a)
+(char-alphabetic? #\B)
+(char-alphabetic? #\0)
+(char-alphabetic? #\space)
+
+(defun char-numeric? (c) (<= #\0 c #\9))
+
+(char-numeric? #\a)
+(char-numeric? #\B)
+(char-numeric? #\0)
+(char-numeric? #\space)
+
+(defun char-whitespace? (c) (or (<= #\tab c #\return) (= #\space c)))
+
+(char-whitespace? #\a)
+(char-whitespace? #\B)
+(char-whitespace? #\0)
+(char-whitespace? #\space)
+
+(defun char->integer (c) c)
+(defun integer->char (c) char-integer)
+
+(defun char-upcase (c) (if (char-lower-case? c) (+ c (- #\A #\a)) c))
+
+(char-upcase #\a)
+(char-upcase #\B)
+(char-upcase #\0)
+(char-upcase #\space)
+
+(defun char-downcase (c) (if (char-upper-case? c) (+ c (- #\a #\A)) c))
+
+(char-downcase #\a)
+(char-downcase #\B)
+(char-downcase #\0)
+(char-downcase #\space)
+
+(define string (lexpr (chars) (list->string chars)))
+
+(display "apply\n")
+(apply cons '(a b))
+
+(define map (lexpr (proc lists)
+		   (let ((args (lambda (lists)
+				 (if (null? lists) ()
+				   (cons (caar lists) (args (cdr lists))))))
+			 (next (lambda (lists)
+				 (if (null? lists) ()
+				   (cons (cdr (car lists)) (next (cdr lists))))))
+			 (domap (lambda (lists)
+				  (if (null? (car lists)) ()
+				    (cons (apply proc (args lists)) (domap (next lists)))
+					)))
+			 )
+		     (domap lists))))
+
+(map cadr '((a b) (d e) (g h)))
+
+(define for-each (lexpr (proc lists)
+			(apply map proc lists)
+			#t))
+
+(for-each display '("hello" " " "world" "\n"))
+
+(define -string-ml (lambda (strings)
+			     (if (null? strings) ()
+			       (cons (string->list (car strings)) (-string-ml (cdr strings))))))
+
+(define string-map (lexpr (proc strings)
+			  (list->string (apply map proc (-string-ml strings))))))
+
+(string-map 1+ "HAL")
+
+(define string-for-each (lexpr (proc strings)
+			       (apply for-each proc (-string-ml strings))))
+
+(string-for-each write-char "IBM\n")
+
+(define newline (lambda () (write-char #\newline)))
+
+(newline)
+
+(call-with-current-continuation
+ (lambda (exit)
+   (for-each (lambda (x)
+	       (write "test" x)
+	       (if (negative? x)
+		   (exit x)))
+	     '(54 0 37 -3 245 19))
+   #t))
+
+;(define number->string (lexpr (arg opt)
+;			      (let ((base (if (null? opt) 10 (car opt)))
+					;
+;
+