(eval-when-compile
(%compile-defmacro 'defmacro
- (lambda (name args &rest body)
+ '(lambda (name args &rest body)
`(eval-when-compile
- (%compile-defmacro ',name (lambda ,args ,@body))))))
+ (%compile-defmacro ',name '(lambda ,args ,@body))))))
(defmacro defvar (name value)
`(progn
(defvar *package* (new))
+(defvar nil (make-symbol "NIL"))
+(set *package* "NIL" nil)
+
+(defvar t (make-symbol "T"))
+(set *package* "T" t)
+
+(defun internp (name)
+ (in name *package*))
+
(defun intern (name)
- (let ((s (get *package* name)))
- (if s s (set *package* name (make-symbol name)))))
+ (if (internp name)
+ (get *package* name)
+ (set *package* name (make-symbol name))))
(defun find-symbol (name)
(get *package* name))
-(defvar t 't)
-(defvar nil 'nil)
-
(defmacro when (condition &rest body)
`(if ,condition (progn ,@body) nil))
(defmacro unless (condition &rest body)
`(if ,condition nil (progn ,@body)))
+(defmacro dolist (iter &rest body)
+ (let ((var (first iter))
+ (g!list (make-symbol "LIST")))
+ `(let ((,g!list ,(second iter))
+ (,var nil))
+ (while ,g!list
+ (setq ,var (car ,g!list))
+ ,@body
+ (setq ,g!list (cdr ,g!list))))))
+
(defun = (x y) (= x y))
(defun + (x y) (+ x y))
(defun - (x y) (- x y))
(defun car (x) (car x))
(defun caar (x) (car (car x)))
(defun cadr (x) (car (cdr x)))
-(defun caddr (x) (car (cdr x)))
-(defun cadddr (x) (car (cdr x)))
+(defun caddr (x) (car (cdr (cdr x))))
+(defun cadddr (x) (car (cdr (cdr (cdr x)))))
(defun cdr (x) (cdr x))
(defun cdar (x) (cdr (car x)))
(defun cddr (x) (cdr (cdr x)))
((null (cdr forms))
(car forms))
(t
- `(if ,(car forms)
- t
- (or ,@(cdr forms))))))
+ (let ((g (make-symbol "VAR")))
+ `(let ((,g ,(car forms)))
+ (if ,g ,g (or ,@(cdr forms))))))))
(defmacro prog1 (form &rest body)
(defun string= (s1 s2)
(equal s1 s2))
+;; ----------------------------------------------------------
+
+;;; Utils
+
+#+common-lisp
+(progn
+ (defmacro while (condition &body body)
+ `(do ()
+ ((not ,condition))
+ ,@body))
+
+ (defun concat-two (s1 s2)
+ (concatenate 'string s1 s2))
+
+ (defun setcar (cons new)
+ (setf (car cons) new))
+ (defun setcdr (cons new)
+ (setf (cdr cons) new)))
+
+(defvar *newline* (string (code-char 10)))
+
+(defun concat (&rest strs)
+ (!reduce (lambda (s1 s2) (concat-two s1 s2))
+ strs
+ ""))
+
+;;; Concatenate a list of strings, with a separator
+(defun join (list separator)
+ (cond
+ ((null list)
+ "")
+ ((null (cdr list))
+ (car list))
+ (t
+ (concat (car list)
+ separator
+ (join (cdr list) separator)))))
+
+(defun join-trailing (list separator)
+ (cond
+ ((null list)
+ "")
+ ((null (car list))
+ (join-trailing (cdr list) separator))
+ (t
+ (concat (car list) separator (join-trailing (cdr list) separator)))))
+
+(defun integer-to-string (x)
+ (if (zerop x)
+ "0"
+ (let ((digits nil))
+ (while (not (= x 0))
+ (push (mod x 10) digits)
+ (setq x (truncate x 10)))
+ (join (mapcar (lambda (d) (string (char "0123456789" d)))
+ digits)
+ ""))))
+
;;;; Reader
;;; It is a basic Lisp reader. It does not use advanced stuff
(read-until stream #'terminalp))))
(cond
((string= cname "space") (char-code #\space))
+ ((string= cname "tab") (char-code #\tab))
((string= cname "newline") (char-code #\newline))
(t (char-code (char cname 0))))))
(#\+
(push (make-binding name 'macro lambda t) *fenv*))
-
(defvar *compilations* nil)
(defun ls-compile-block (sexps env fenv)
(remove nil (mapcar (lambda (x)
(ls-compile x env fenv))
sexps))
- (concat ";" *newline*)))
-
+ ";
+"))
(defmacro define-compilation (name args &rest body)
;; Creates a new primitive `name' with parameters args and
;; @body. The body can access to the local environment through the
`(push (list ',name (lambda (env fenv ,@args) ,@body))
*compilations*))
-
(define-compilation if (condition true false)
(concat "("
- (ls-compile condition env fenv)
+ (ls-compile condition env fenv) " !== " (ls-compile nil nil nil)
" ? "
(ls-compile true env fenv)
" : "
*newline*
(if rest-argument
(let ((js!rest (lookup-variable-translation rest-argument new-env)))
- (concat "var " js!rest "= false;" *newline*
+ (concat "var " js!rest "= " (ls-compile nil env fenv) ";" *newline*
"for (var i = arguments.length-1; i>="
(integer-to-string (length required-arguments))
"; i--)" *newline*
;;; Literals
+(defun escape-string (string)
+ (let ((output "")
+ (index 0)
+ (size (length string)))
+ (while (< index size)
+ (let ((ch (char string index)))
+ (when (or (char= ch #\") (char= ch #\\))
+ (setq output (concat output "\\")))
+ (when (or (char= ch #\newline))
+ (setq output (concat output "\\"))
+ (setq ch #\n))
+ (setq output (concat output (string ch))))
+ (incf index))
+ output))
+
(defun literal->js (sexp)
(cond
- ((null sexp) "false")
((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" sexp "\""))
- ((symbolp sexp) (concat "{name: \"" (symbol-name sexp) "\"}"))
+ ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
+ ((symbolp sexp) (ls-compile `(intern ,(escape-string (symbol-name sexp))) *env* *fenv*))
((consp sexp) (concat "{car: "
(literal->js (car sexp))
", cdr: "
(let ((counter 0))
(defun literal (form)
- (if (null form)
- (literal->js form)
- (let ((var (concat "l" (integer-to-string (incf counter)))))
- (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
- var))))
+ (let ((var (concat "l" (integer-to-string (incf counter)))))
+ (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
+ var)))
(define-compilation quote (sexp)
(literal sexp))
(define-compilation while (pred &rest body)
(concat "(function(){ while("
- (ls-compile pred env fenv)
+ (ls-compile pred env fenv) " !== " (ls-compile nil nil nil)
"){"
(ls-compile-block body env fenv)
"}})()"))
;;; Primitives
+(defun compile-bool (x)
+ (concat "(" x "?" (ls-compile t nil nil) ": " (ls-compile nil nil nil) ")"))
+
(define-compilation + (x y)
(concat "((" (ls-compile x env fenv) ") + (" (ls-compile y env fenv) "))"))
(concat "((" (ls-compile x env fenv) ") / (" (ls-compile y env fenv) "))"))
(define-compilation < (x y)
- (concat "((" (ls-compile x env fenv) ") < (" (ls-compile y env fenv) "))"))
+ (compile-bool (concat "((" (ls-compile x env fenv) ") < (" (ls-compile y env fenv) "))")))
(define-compilation = (x y)
- (concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))"))
+ (compile-bool (concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))")))
+
+(define-compilation numberp (x)
+ (compile-bool (concat "(typeof (" (ls-compile x env fenv) ") == \"number\")")))
+
(define-compilation mod (x y)
(concat "((" (ls-compile x env fenv) ") % (" (ls-compile y env fenv) "))"))
(concat "(Math.floor(" (ls-compile x env fenv) "))"))
(define-compilation null (x)
- (concat "(" (ls-compile x env fenv) "== false)"))
+ (compile-bool (concat "(" (ls-compile x env fenv) "===" (ls-compile nil env fenv) ")")))
(define-compilation cons (x y)
(concat "{car: " (ls-compile x env fenv) ", cdr: " (ls-compile y env fenv) "}"))
+(define-compilation consp (x)
+ (compile-bool
+ (concat "(function(){ var tmp = "
+ (ls-compile x env fenv)
+ "; return (typeof tmp == 'object' && 'car' in tmp);})()")))
+
(define-compilation car (x)
(concat "(" (ls-compile x env fenv) ").car"))
(define-compilation setcdr (x new)
(concat "((" (ls-compile x env fenv) ").cdr = " (ls-compile new env fenv) ")"))
+(define-compilation symbolp (x)
+ (compile-bool
+ (concat "(function(){ var tmp = "
+ (ls-compile x env fenv)
+ "; return (typeof tmp == 'object' && 'name' in tmp); })()")))
+
(define-compilation make-symbol (name)
(concat "{name: " (ls-compile name env fenv) "}"))
(concat "(" (ls-compile x env fenv) ").name"))
(define-compilation eq (x y)
- (concat "(" (ls-compile x env fenv) " === " (ls-compile y env fenv) ")"))
+ (compile-bool
+ (concat "(" (ls-compile x env fenv) " === " (ls-compile y env fenv) ")")))
(define-compilation equal (x y)
- (concat "(" (ls-compile x env fenv) " == " (ls-compile y env fenv) ")"))
+ (compile-bool
+ (concat "(" (ls-compile x env fenv) " == " (ls-compile y env fenv) ")")))
(define-compilation string (x)
(concat "String.fromCharCode(" (ls-compile x env fenv) ")"))
+(define-compilation stringp (x)
+ (compile-bool
+ (concat "(typeof(" (ls-compile x env fenv) ") == \"string\")")))
+
(define-compilation string-upcase (x)
(concat "(" (ls-compile x env fenv) ").toUpperCase()"))
", ")
")"))
+(define-compilation apply (func &rest args)
+ (if (null args)
+ (concat "(" (ls-compile func env fenv) ")()")
+ (let ((args (butlast args))
+ (last (car (last args))))
+ (concat "(function(){" *newline*
+ "var f = " (ls-compile func env fenv) ";" *newline*
+ "var args = [" (join (mapcar (lambda (x)
+ (ls-compile x env fenv))
+ args)
+ ", ")
+ "];" *newline*
+ "var tail = (" (ls-compile last env fenv) ");" *newline*
+ "while (tail != " (ls-compile nil env fenv) "){" *newline*
+ " args.push(tail.car);" *newline*
+ " tail = tail.cdr;" *newline*
+ "}" *newline*
+ "return f.apply(this, args);" *newline*
+ "})()" *newline*))))
+
+(define-compilation js-eval (string)
+ (concat "eval(" (ls-compile string env fenv) ")"))
+
+
(define-compilation error (string)
(concat "(function (){ throw " (ls-compile string env fenv) ";" "return 0;})()"))
"{}")
(define-compilation get (object key)
- (concat "(" (ls-compile object env fenv) ")[" (ls-compile key env fenv) "]"))
+ (concat "(function(){ var tmp = "
+ "(" (ls-compile object env fenv) ")[" (ls-compile key env fenv) "]"
+ ";"
+ "return tmp == undefined? " (ls-compile nil nil nil) ": tmp ;"
+ "})()"))
(define-compilation set (object key value)
(concat "(("
(ls-compile key env fenv) "]"
" = " (ls-compile value env fenv) ")"))
+(define-compilation in (key object)
+ (compile-bool
+ (concat "(" (ls-compile key env fenv) " in " (ls-compile object env fenv) ")")))
+
+
(defun macrop (x)
(and (symbolp x) (eq (binding-type (lookup-function x *fenv*)) 'macro)))
(cond
((symbolp sexp) (lookup-variable-translation sexp env))
((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" sexp "\""))
+ ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
((listp sexp)
(if (assoc (car sexp) *compilations*)
(let ((comp (second (assoc (car sexp) *compilations*))))
(setq *toplevel-compilations* nil)
(let ((code (ls-compile sexp nil nil)))
(prog1
- (concat (join (mapcar (lambda (x) (concat x ";" *newline*))
+ (concat
+ (join (mapcar (lambda (x) (concat x ";" *newline*))
*toplevel-compilations*)
- "")
+ "")
code)
(setq *toplevel-compilations* nil))))
+#+common-lisp
+(progn
+ (defun read-whole-file (filename)
+ (with-open-file (in filename)
+ (let ((seq (make-array (file-length in) :element-type 'character)))
+ (read-sequence seq in)
+ seq)))
+
+ (defun ls-compile-file (filename output)
+ (setq *env* nil *fenv* nil)
+ (setq *compilation-unit-checks* nil)
+ (with-open-file (out output :direction :output :if-exists :supersede)
+ (let* ((source (read-whole-file filename))
+ (in (make-string-stream source)))
+ (loop
+ for x = (ls-read in)
+ until (eq x *eof*)
+ for compilation = (ls-compile-toplevel x)
+ when (plusp (length compilation))
+ do (write-line (concat compilation "; ") out))
+ (dolist (check *compilation-unit-checks*)
+ (funcall check))
+ (setq *compilation-unit-checks* nil))))
+
+ (defun bootstrap ()
+ (ls-compile-file "lispstrack.lisp" "lispstrack.js")))
+
+
+;;; ----------------------------------------------------------
+
+(defmacro with-compilation-unit (&rest body)
+ `(prog1 (progn ,@body)
+ (dolist (check *compilation-unit-checks*)
+ (funcall check))
+ (setq *compilation-unit-checks* nil)))
(defun eval (x)
- (js-eval (ls-compile x nil nil)))
+ (let ((code
+ (with-compilation-unit
+ (ls-compile-toplevel x nil nil))))
+ (js-eval code)))
-
-(debug (eq (ls-read-from-string "+") '+))
+;; Set the initial global environment to be equal to the host global
+;; environment at this point of the compilation.
+(eval-when-compile
+ (let ((c1 (ls-compile `(setq *fenv* ',*fenv*) nil nil))
+ (c2 (ls-compile `(setq *env* ',*env*) nil nil)))
+ (setq *toplevel-compilations*
+ (append *toplevel-compilations* (list c1 c2)))))
+
+(js-eval
+ (concat "var lisp = {};"
+ "lisp.read = " (lookup-function-translation 'ls-read-from-string nil) ";" *newline*
+ "lisp.eval = " (lookup-function-translation 'eval nil) ";" *newline*
+ "lisp.compile = " (lookup-function-translation 'ls-compile-toplevel nil) ";" *newline*
+ "lisp.evalString = function(str){" *newline*
+ " return lisp.eval(lisp.read(str));" *newline*
+ "}" *newline*
+ "lisp.compileString = function(str){" *newline*
+ " return lisp.compile(lisp.read(str));" *newline*
+ "}" *newline*))
projects / jscl.git / blobdiff