+;;; Library
+
+#+lispstrack
+(progn
+ (eval-when-compile
+ (%compile-defmacro 'defmacro
+ '(lambda (name args &rest body)
+ `(eval-when-compile
+ (%compile-defmacro ',name '(lambda ,args ,@body))))))
+
+ (defmacro defvar (name value)
+ `(progn
+ (eval-when-compile
+ (%compile-defvar ',name))
+ (setq ,name ,value)))
+
+ (defmacro defun (name args &rest body)
+ `(progn
+ (eval-when-compile
+ (%compile-defun ',name))
+ (fsetq ,name (lambda ,args ,@body))))
+
+ (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)
+ (if (internp name)
+ (get *package* name)
+ (set *package* name (make-symbol name))))
+
+ (defun find-symbol (name)
+ (get *package* name))
+
+ (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 * (x y) (* x y))
+ (defun / (x y) (/ x y))
+ (defun 1+ (x) (+ x 1))
+ (defun 1- (x) (- x 1))
+ (defun zerop (x) (= x 0))
+ (defun not (x) (if x nil t))
+
+ (defun truncate (x y) (floor (/ x y)))
+
+ (defun cons (x y ) (cons x y))
+ (defun consp (x) (consp x))
+
+ (defun car (x) (car x))
+ (defun cdr (x) (cdr x))
+
+ (defun caar (x) (car (car x)))
+ (defun cadr (x) (car (cdr x)))
+ (defun cdar (x) (cdr (car x)))
+ (defun cddr (x) (cdr (cdr x)))
+ (defun caddr (x) (car (cdr (cdr x))))
+ (defun cdddr (x) (cdr (cdr (cdr x))))
+ (defun cadddr (x) (car (cdr (cdr (cdr x)))))
+
+ (defun first (x) (car x))
+ (defun second (x) (cadr x))
+ (defun third (x) (caddr x))
+ (defun fourth (x) (cadddr x))
+
+ (defun list (&rest args)
+ args)
+
+ (defun atom (x)
+ (not (consp x))))
+
(defun ensure-list (x)
(if (listp x)
x
(cdr list)
(funcall func initial (car list)))))
-;;; Utils
+#+lispstrack
+(progn
+ (defun append-two (list1 list2)
+ (if (null list1)
+ list2
+ (cons (car list1)
+ (append (cdr list1) list2))))
+
+ (defun append (&rest lists)
+ (!reduce #'append-two lists '()))
+
+ (defun reverse-aux (list acc)
+ (if (null list)
+ acc
+ (reverse-aux (cdr list) (cons (car list) acc))))
+
+ (defun reverse (list)
+ (reverse-aux list '()))
+
+ (defmacro incf (x)
+ `(setq ,x (1+ ,x)))
+
+ (defmacro decf (x)
+ `(setq ,x (1- ,x)))
+
+ (defun list-length (list)
+ (let ((l 0))
+ (while (not (null list))
+ (incf l)
+ (setq list (cdr list)))
+ l))
+
+ (defun length (seq)
+ (if (stringp seq)
+ (string-length seq)
+ (list-length seq)))
+
+ (defun mapcar (func list)
+ (if (null list)
+ '()
+ (cons (funcall func (car list))
+ (mapcar func (cdr list)))))
+
+ (defmacro push (x place)
+ `(setq ,place (cons ,x ,place)))
+
+ (defmacro cond (&rest clausules)
+ (if (null clausules)
+ nil
+ (if (eq (caar clausules) t)
+ `(progn ,@(cdar clausules))
+ `(if ,(caar clausules)
+ (progn ,@(cdar clausules))
+ (cond ,@(cdr clausules))))))
+
+ (defmacro case (form &rest clausules)
+ (let ((!form (make-symbol "FORM")))
+ `(let ((,!form ,form))
+ (cond
+ ,@(mapcar (lambda (clausule)
+ (if (eq (car clausule) t)
+ clausule
+ `((eql ,!form ,(car clausule))
+ ,@(cdr clausule))))
+ clausules)))))
+
+ (defmacro ecase (form &rest clausules)
+ `(case ,form
+ ,@(append
+ clausules
+ `((t
+ (error "ECASE expression failed."))))))
+
+ (defun code-char (x) x)
+ (defun char-code (x) x)
+ (defun char= (x y) (= x y))
+
+ (defmacro and (&rest forms)
+ (cond
+ ((null forms)
+ t)
+ ((null (cdr forms))
+ (car forms))
+ (t
+ `(if ,(car forms)
+ (and ,@(cdr forms))
+ nil))))
+
+ (defmacro or (&rest forms)
+ (cond
+ ((null forms)
+ nil)
+ ((null (cdr forms))
+ (car forms))
+ (t
+ (let ((g (make-symbol "VAR")))
+ `(let ((,g ,(car forms)))
+ (if ,g ,g (or ,@(cdr forms))))))))
+
+ (defmacro prog1 (form &rest body)
+ (let ((value (make-symbol "VALUE")))
+ `(let ((,value ,form))
+ ,@body
+ ,value)))
+
+ (defun <= (x y) (or (< x y) (= x y)))
+ (defun >= (x y) (not (< x y)))
+
+ (defun listp (x)
+ (or (consp x) (null x)))
+
+ (defun integerp (x)
+ (and (numberp x) (= (floor x) x)))
+
+ (defun last (x)
+ (if (null (cdr x))
+ x
+ (last (cdr x))))
+
+ (defun butlast (x)
+ (if (null (cdr x))
+ nil
+ (cons (car x) (butlast (cdr x)))))
+
+ (defun member (x list)
+ (cond
+ ((null list)
+ nil)
+ ((eql x (car list))
+ list)
+ (t
+ (member x (cdr list)))))
+
+ (defun remove (x list)
+ (cond
+ ((null list)
+ nil)
+ ((eql x (car list))
+ (remove x (cdr list)))
+ (t
+ (cons (car list) (remove x (cdr list))))))
+
+ (defun remove-if (func list)
+ (cond
+ ((null list)
+ nil)
+ ((funcall func (car list))
+ (remove-if func (cdr list)))
+ (t
+ (cons (car list) (remove-if func (cdr list))))))
+
+ (defun remove-if-not (func list)
+ (cond
+ ((null list)
+ nil)
+ ((funcall func (car list))
+ (cons (car list) (remove-if-not func (cdr list))))
+ (t
+ (remove-if-not func (cdr list)))))
+
+ (defun digit-char-p (x)
+ (if (and (<= #\0 x) (<= x #\9))
+ (- x #\0)
+ nil))
+
+ (defun parse-integer (string)
+ (let ((value 0)
+ (index 0)
+ (size (length string)))
+ (while (< index size)
+ (setq value (+ (* value 10) (digit-char-p (char string index))))
+ (incf index))
+ value))
+
+ (defun every (function seq)
+ ;; string
+ (let ((ret t)
+ (index 0)
+ (size (length seq)))
+ (while (and ret (< index size))
+ (unless (funcall function (char seq index))
+ (setq ret nil))
+ (incf index))
+ ret))
+
+ (defun eql (x y)
+ (eq x y))
+
+ (defun assoc (x alist)
+ (cond
+ ((null alist)
+ nil)
+ ((eql x (caar alist))
+ (car alist))
+ (t
+ (assoc x (cdr alist)))))
+
+ (defun string= (s1 s2)
+ (equal s1 s2)))
+
#+common-lisp
(progn
(defun setcdr (cons new)
(setf (cdr cons) new)))
+
(defvar *newline* (string (code-char 10)))
(defun concat (&rest strs)
(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)))))
+ (if (null list)
+ ""
+ (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))
+ (while (not (zerop x))
(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
(defun mark-binding-as-declared (b)
(setcar (cdddr b) t))
+
(defvar *variable-counter* 0)
(defun gvarname (symbol)
(concat "v" (integer-to-string (incf *variable-counter*))))
(define-compilation js-eval (string)
(concat "eval.apply(window, [" (ls-compile string env fenv) "])"))
+
(define-compilation error (string)
(concat "(function (){ throw " (ls-compile string env fenv) ";" "return 0;})()"))
(setq *toplevel-compilations* nil)
(let ((code (ls-compile sexp nil nil)))
(prog1
- (concat #+common-lisp (concat "/* " (princ-to-string sexp) " */")
+ (concat #+common-lisp (concat "/* " (princ-to-string sexp) " */")
(join (mapcar (lambda (x) (concat x ";" *newline*))
*toplevel-compilations*)
"")
code)
(setq *toplevel-compilations* nil))))
+;;; ----------------------------------------------------------
+
+#+lispstrack
+(progn
+ (defmacro with-compilation-unit (&rest body)
+ `(prog1
+ (progn
+ (setq *compilation-unit-checks* nil)
+ (setq *env* (remove-if-not #'binding-declared *env*))
+ (setq *fenv* (remove-if-not #'binding-declared *fenv*))
+ ,@body)
+ (dolist (check *compilation-unit-checks*)
+ (funcall check))))
+
+ (defun eval (x)
+ (let ((code
+ (with-compilation-unit
+ (ls-compile-toplevel x nil nil))))
+ (js-eval code)))
+
+
+ ;; 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))
+ (c3 (ls-compile `(setq *variable-counter* ',*variable-counter*) nil nil))
+ (c4 (ls-compile `(setq *function-counter* ',*function-counter*) nil nil))
+ (c5 (ls-compile `(setq *literal-counter* ',*literal-counter*) nil nil)))
+ (setq *toplevel-compilations*
+ (append *toplevel-compilations* (list c1 c2 c3 c4 c5)))))
+
+ (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*)))
+
#+common-lisp
(progn
(defun read-whole-file (filename)
+++ /dev/null
-;;; Library
-
-(eval-when-compile
- (%compile-defmacro 'defmacro
- '(lambda (name args &rest body)
- `(eval-when-compile
- (%compile-defmacro ',name '(lambda ,args ,@body))))))
-
-(defmacro defvar (name value)
- `(progn
- (eval-when-compile
- (%compile-defvar ',name))
- (setq ,name ,value)))
-
-(defmacro defun (name args &rest body)
- `(progn
- (eval-when-compile
- (%compile-defun ',name))
- (fsetq ,name (lambda ,args ,@body))))
-
-(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)
- (if (internp name)
- (get *package* name)
- (set *package* name (make-symbol name))))
-
-(defun find-symbol (name)
- (get *package* name))
-
-(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 * (x y) (* x y))
-(defun / (x y) (/ x y))
-(defun 1+ (x) (+ x 1))
-(defun 1- (x) (- x 1))
-(defun zerop (x) (= x 0))
-(defun not (x) (if x nil t))
-
-(defun truncate (x y) (floor (/ x y)))
-
-(defun cons (x y ) (cons x y))
-(defun consp (x) (consp x))
-
-(defun car (x) (car x))
-(defun cdr (x) (cdr x))
-
-(defun caar (x) (car (car x)))
-(defun cadr (x) (car (cdr x)))
-(defun cdar (x) (cdr (car x)))
-(defun cddr (x) (cdr (cdr x)))
-
-(defun caddr (x) (car (cdr (cdr x))))
-(defun cdddr (x) (cdr (cdr (cdr x))))
-
-(defun cadddr (x) (car (cdr (cdr (cdr x)))))
-
-(defun first (x) (car x))
-(defun second (x) (cadr x))
-(defun third (x) (caddr x))
-(defun fourth (x) (cadddr x))
-
-(defun list (&rest args)
- args)
-
-(defun atom (x)
- (not (consp x)))
-
-(defun ensure-list (x)
- (if (listp x)
- x
- (list x)))
-
-(defun append-two (list1 list2)
- (if (null list1)
- list2
- (cons (car list1)
- (append (cdr list1) list2))))
-
-(defun append (&rest lists)
- (!reduce #'append-two lists '()))
-
-(defun reverse-aux (list acc)
- (if (null list)
- acc
- (reverse-aux (cdr list) (cons (car list) acc))))
-
-(defun reverse (list)
- (reverse-aux list '()))
-
-(defmacro incf (x)
- `(setq ,x (1+ ,x)))
-
-(defmacro decf (x)
- `(setq ,x (1- ,x)))
-
-(defun list-length (list)
- (let ((l 0))
- (while (not (null list))
- (incf l)
- (setq list (cdr list)))
- l))
-
-(defun length (seq)
- (if (stringp seq)
- (string-length seq)
- (list-length seq)))
-
-(defun mapcar (func list)
- (if (null list)
- '()
- (cons (funcall func (car list))
- (mapcar func (cdr list)))))
-
-(defmacro push (x place)
- `(setq ,place (cons ,x ,place)))
-
-(defmacro cond (&rest clausules)
- (if (null clausules)
- nil
- (if (eq (caar clausules) t)
- `(progn ,@(cdar clausules))
- `(if ,(caar clausules)
- (progn ,@(cdar clausules))
- (cond ,@(cdr clausules))))))
-
-
-(defmacro case (form &rest clausules)
- (let ((!form (make-symbol "FORM")))
- `(let ((,!form ,form))
- (cond
- ,@(mapcar (lambda (clausule)
- (if (eq (car clausule) t)
- clausule
- `((eql ,!form ,(car clausule))
- ,@(cdr clausule))))
- clausules)))))
-
-(defmacro ecase (form &rest clausules)
- `(case ,form
- ,@(append
- clausules
- `((t
- (error "ECASE expression failed."))))))
-
-(defun !reduce (func list initial)
- (if (null list)
- initial
- (!reduce func
- (cdr list)
- (funcall func initial (car list)))))
-
-
-(defun code-char (x) x)
-(defun char-code (x) x)
-(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)
- (if (null list)
- ""
- (concat (car list) separator (join-trailing (cdr list) separator))))
-
-(defun integer-to-string (x)
- (if (zerop x)
- "0"
- (let ((digits nil))
- (while (not (zerop x 0))
- (push (mod x 10) digits)
- (setq x (truncate x 10)))
- (join (mapcar (lambda (d) (string (char "0123456789" d)))
- digits)
- ""))))
-
-(defmacro and (&rest forms)
- (cond
- ((null forms)
- t)
- ((null (cdr forms))
- (car forms))
- (t
- `(if ,(car forms)
- (and ,@(cdr forms))
- nil))))
-
-
-(defmacro or (&rest forms)
- (cond
- ((null forms)
- nil)
- ((null (cdr forms))
- (car forms))
- (t
- (let ((g (make-symbol "VAR")))
- `(let ((,g ,(car forms)))
- (if ,g ,g (or ,@(cdr forms))))))))
-
-
-(defmacro prog1 (form &rest body)
- (let ((value (make-symbol "VALUE")))
- `(let ((,value ,form))
- ,@body
- ,value)))
-
-
-(defun char= (x y) (= x y))
-
-(defun <= (x y) (or (< x y) (= x y)))
-(defun >= (x y) (not (< x y)))
-
-(defun listp (x)
- (or (consp x) (null x)))
-
-(defun integerp (x)
- (and (numberp x) (= (floor x) x)))
-
-(defun last (x)
- (if (null (cdr x))
- x
- (last (cdr x))))
-
-(defun butlast (x)
- (if (null (cdr x))
- nil
- (cons (car x) (butlast (cdr x)))))
-
-(defun member (x list)
- (cond
- ((null list)
- nil)
- ((eql x (car list))
- list)
- (t
- (member x (cdr list)))))
-
-(defun remove (x list)
- (cond
- ((null list)
- nil)
- ((eql x (car list))
- (remove x (cdr list)))
- (t
- (cons (car list) (remove x (cdr list))))))
-
-(defun remove-if (func list)
- (cond
- ((null list)
- nil)
- ((funcall func (car list))
- (remove-if func (cdr list)))
- (t
- (cons (car list) (remove-if func (cdr list))))))
-
-(defun remove-if-not (func list)
- (cond
- ((null list)
- nil)
- ((funcall func (car list))
- (cons (car list) (remove-if-not func (cdr list))))
- (t
- (remove-if-not func (cdr list)))))
-
-(defun digit-char-p (x)
- (if (and (<= #\0 x) (<= x #\9))
- (- x #\0)
- nil))
-
-(defun parse-integer (string)
- (let ((value 0)
- (index 0)
- (size (length string)))
- (while (< index size)
- (setq value (+ (* value 10) (digit-char-p (char string index))))
- (incf index))
- value))
-
-(defun every (function seq)
- ;; string
- (let ((ret t)
- (index 0)
- (size (length seq)))
- (while (and ret (< index size))
- (unless (funcall function (char seq index))
- (setq ret nil))
- (incf index))
- ret))
-
-(defun eql (x y)
- (eq x y))
-
-(defun assoc (x alist)
- (cond
- ((null alist)
- nil)
- ((eql x (caar alist))
- (car alist))
- (t
- (assoc x (cdr alist)))))
-
-(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
-;;; intentionally, because we want to use it to bootstrap a simple
-;;; Lisp. The main entry point is the function `ls-read', which
-;;; accepts a strings as argument and return the Lisp expression.
-(defun make-string-stream (string)
- (cons string 0))
-
-(defun %peek-char (stream)
- (and (< (cdr stream) (length (car stream)))
- (char (car stream) (cdr stream))))
-
-(defun %read-char (stream)
- (and (< (cdr stream) (length (car stream)))
- (prog1 (char (car stream) (cdr stream))
- (setcdr stream (1+ (cdr stream))))))
-
-(defun whitespacep (ch)
- (or (char= ch #\space) (char= ch #\newline) (char= ch #\tab)))
-
-(defun skip-whitespaces (stream)
- (let (ch)
- (setq ch (%peek-char stream))
- (while (and ch (whitespacep ch))
- (%read-char stream)
- (setq ch (%peek-char stream)))))
-
-(defun terminalp (ch)
- (or (null ch) (whitespacep ch) (char= #\) ch) (char= #\( ch)))
-
-(defun read-until (stream func)
- (let ((string "")
- (ch))
- (setq ch (%peek-char stream))
- (while (not (funcall func ch))
- (setq string (concat string (string ch)))
- (%read-char stream)
- (setq ch (%peek-char stream)))
- string))
-
-(defun skip-whitespaces-and-comments (stream)
- (let (ch)
- (skip-whitespaces stream)
- (setq ch (%peek-char stream))
- (while (and ch (char= ch #\;))
- (read-until stream (lambda (x) (char= x #\newline)))
- (skip-whitespaces stream)
- (setq ch (%peek-char stream)))))
-
-(defun %read-list (stream)
- (skip-whitespaces-and-comments stream)
- (let ((ch (%peek-char stream)))
- (cond
- ((null ch)
- (error "Unspected EOF"))
- ((char= ch #\))
- (%read-char stream)
- nil)
- ((char= ch #\.)
- (%read-char stream)
- (prog1 (ls-read stream)
- (skip-whitespaces-and-comments stream)
- (unless (char= (%read-char stream) #\))
- (error "')' was expected."))))
- (t
- (cons (ls-read stream) (%read-list stream))))))
-
-(defun read-string (stream)
- (let ((string "")
- (ch nil))
- (setq ch (%read-char stream))
- (while (not (eql ch #\"))
- (when (null ch)
- (error "Unexpected EOF"))
- (when (eql ch #\\)
- (setq ch (%read-char stream)))
- (setq string (concat string (string ch)))
- (setq ch (%read-char stream)))
- string))
-
-(defvar *eof* (make-symbol "EOF"))
-(defun ls-read (stream)
- (skip-whitespaces-and-comments stream)
- (let ((ch (%peek-char stream)))
- (cond
- ((null ch)
- *eof*)
- ((char= ch #\()
- (%read-char stream)
- (%read-list stream))
- ((char= ch #\')
- (%read-char stream)
- (list 'quote (ls-read stream)))
- ((char= ch #\`)
- (%read-char stream)
- (list 'backquote (ls-read stream)))
- ((char= ch #\")
- (%read-char stream)
- (read-string stream))
- ((char= ch #\,)
- (%read-char stream)
- (if (eql (%peek-char stream) #\@)
- (progn (%read-char stream) (list 'unquote-splicing (ls-read stream)))
- (list 'unquote (ls-read stream))))
- ((char= ch #\#)
- (%read-char stream)
- (ecase (%read-char stream)
- (#\'
- (list 'function (ls-read stream)))
- (#\\
- (let ((cname
- (concat (string (%read-char stream))
- (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))))))
- (#\+
- (let ((feature (read-until stream #'terminalp)))
- (cond
- ((string= feature "common-lisp")
- (ls-read stream) ;ignore
- (ls-read stream))
- ((string= feature "lispstrack")
- (ls-read stream))
- (t
- (error "Unknown reader form.")))))))
- (t
- (let ((string (read-until stream #'terminalp)))
- (if (every #'digit-char-p string)
- (parse-integer string)
- (intern (string-upcase string))))))))
-
-(defun ls-read-from-string (string)
- (ls-read (make-string-stream string)))
-
-
-;;;; Compiler
-
-(defvar *compilation-unit-checks* '())
-
-(defvar *env* '())
-(defvar *fenv* '())
-
-(defun make-binding (name type js declared)
- (list name type js declared))
-
-(defun binding-name (b) (first b))
-(defun binding-type (b) (second b))
-(defun binding-translation (b) (third b))
-(defun binding-declared (b)
- (and b (fourth b)))
-(defun mark-binding-as-declared (b)
- (setcar (cdddr b) t))
-
-
-(defvar *variable-counter* 0)
-(defun gvarname (symbol)
- (concat "v" (integer-to-string (incf *variable-counter*))))
-
-(defun lookup-variable (symbol env)
- (or (assoc symbol env)
- (assoc symbol *env*)
- (let ((name (symbol-name symbol))
- (binding (make-binding symbol 'variable (gvarname symbol) nil)))
- (push binding *env*)
- (push (lambda ()
- (unless (binding-declared (assoc symbol *env*))
- (error (concat "Undefined variable `" name "'"))))
- *compilation-unit-checks*)
- binding)))
-
-(defun lookup-variable-translation (symbol env)
- (binding-translation (lookup-variable symbol env)))
-
-(defun extend-local-env (args env)
- (append (mapcar (lambda (symbol)
- (make-binding symbol 'variable (gvarname symbol) t))
- args)
- env))
-
-(defvar *function-counter* 0)
-(defun lookup-function (symbol env)
- (or (assoc symbol env)
- (assoc symbol *fenv*)
- (let ((name (symbol-name symbol))
- (binding
- (make-binding symbol
- 'function
- (concat "f" (integer-to-string (incf *function-counter*)))
- nil)))
- (push binding *fenv*)
- (push (lambda ()
- (unless (binding-declared (assoc symbol *fenv*))
- (error (concat "Undefined function `" name "'"))))
- *compilation-unit-checks*)
- binding)))
-
-(defun lookup-function-translation (symbol env)
- (binding-translation (lookup-function symbol env)))
-
-
-(defvar *toplevel-compilations* nil)
-
-(defun %compile-defvar (name)
- (let ((b (lookup-variable name *env*)))
- (mark-binding-as-declared b)
- (push (concat "var " (binding-translation b)) *toplevel-compilations*)))
-
-(defun %compile-defun (name)
- (let ((b (lookup-function name *env*)))
- (mark-binding-as-declared b)
- (push (concat "var " (binding-translation b)) *toplevel-compilations*)))
-
-(defun %compile-defmacro (name lambda)
- (push (make-binding name 'macro lambda t) *fenv*))
-
-
-(defvar *compilations* nil)
-
-(defun ls-compile-block (sexps env fenv)
- (join-trailing
- (remove nil (mapcar (lambda (x)
- (ls-compile x env fenv))
- sexps))
- ";
-"))
-(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
- ;; variable ENV.
- `(push (list ',name (lambda (env fenv ,@args) ,@body))
- *compilations*))
-
-(define-compilation if (condition true false)
- (concat "("
- (ls-compile condition env fenv) " !== " (ls-compile nil nil nil)
- " ? "
- (ls-compile true env fenv)
- " : "
- (ls-compile false env fenv)
- ")"))
-
-;;; Return the required args of a lambda list
-(defun lambda-list-required-argument (lambda-list)
- (if (or (null lambda-list) (eq (car lambda-list) '&rest))
- nil
- (cons (car lambda-list) (lambda-list-required-argument (cdr lambda-list)))))
-
-(defun lambda-list-rest-argument (lambda-list)
- (second (member '&rest lambda-list)))
-
-(define-compilation lambda (lambda-list &rest body)
- (let ((required-arguments (lambda-list-required-argument lambda-list))
- (rest-argument (lambda-list-rest-argument lambda-list)))
- (let ((new-env (extend-local-env
- (append (and rest-argument (list rest-argument))
- required-arguments)
- env)))
- (concat "(function ("
- (join (mapcar (lambda (x)
- (lookup-variable-translation x new-env))
- required-arguments)
- ",")
- "){"
- *newline*
- (if rest-argument
- (let ((js!rest (lookup-variable-translation rest-argument new-env)))
- (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*
- js!rest " = "
- "{car: arguments[i], cdr: " js!rest "};"
- *newline*))
- "")
- (concat (ls-compile-block (butlast body) new-env fenv)
- "return " (ls-compile (car (last body)) new-env fenv) ";")
- *newline*
- "})"))))
-
-(define-compilation fsetq (var val)
- (concat (lookup-function-translation var fenv)
- " = "
- (ls-compile val env fenv)))
-
-(define-compilation setq (var val)
- (concat (lookup-variable-translation var env)
- " = "
- (ls-compile val env fenv)))
-
-;;; 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
- ((integerp sexp) (integer-to-string 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: "
- (literal->js (cdr sexp)) "}"))))
-
-(defvar *literal-counter* 0)
-(defun literal (form)
- (let ((var (concat "l" (integer-to-string (incf *literal-counter*)))))
- (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
- var))
-
-(define-compilation quote (sexp)
- (literal sexp))
-
-(define-compilation debug (form)
- (concat "console.log(" (ls-compile form env fenv) ")"))
-
-(define-compilation while (pred &rest body)
- (concat "(function(){ while("
- (ls-compile pred env fenv) " !== " (ls-compile nil nil nil)
- "){"
- (ls-compile-block body env fenv)
- "}})()"))
-
-(define-compilation function (x)
- (cond
- ((and (listp x) (eq (car x) 'lambda))
- (ls-compile x env fenv))
- ((symbolp x)
- (lookup-function-translation x fenv))))
-
-#+common-lisp
-(defmacro eval-when-compile (&body body)
- `(eval-when (:compile-toplevel :load-toplevel :execute)
- ,@body))
-
-(define-compilation eval-when-compile (&rest body)
- (eval (cons 'progn body))
- nil)
-
-(defmacro define-transformation (name args form)
- `(define-compilation ,name ,args
- (ls-compile ,form env fenv)))
-
-(define-transformation progn (&rest body)
- `((lambda () ,@body)))
-
-(define-transformation let (bindings &rest body)
- (let ((bindings (mapcar #'ensure-list bindings)))
- `((lambda ,(mapcar #'car bindings) ,@body)
- ,@(mapcar #'cadr bindings))))
-
-;;; A little backquote implementation without optimizations of any
-;;; kind for lispstrack.
-(defun backquote-expand-1 (form)
- (cond
- ((symbolp form)
- (list 'quote form))
- ((atom form)
- form)
- ((eq (car form) 'unquote)
- (car form))
- ((eq (car form) 'backquote)
- (backquote-expand-1 (backquote-expand-1 (cadr form))))
- (t
- (cons 'append
- (mapcar (lambda (s)
- (cond
- ((and (listp s) (eq (car s) 'unquote))
- (list 'list (cadr s)))
- ((and (listp s) (eq (car s) 'unquote-splicing))
- (cadr s))
- (t
- (list 'list (backquote-expand-1 s)))))
- form)))))
-
-(defun backquote-expand (form)
- (if (and (listp form) (eq (car form) 'backquote))
- (backquote-expand-1 (cadr form))
- form))
-
-(defmacro backquote (form)
- (backquote-expand-1 form))
-
-(define-transformation backquote (form)
- (backquote-expand-1 form))
-
-;;; 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) "))"))
-
-(define-compilation - (x y)
- (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) "))"))
-
-(define-compilation / (x y)
- (concat "((" (ls-compile x env fenv) ") / (" (ls-compile y env fenv) "))"))
-
-(define-compilation < (x y)
- (compile-bool (concat "((" (ls-compile x env fenv) ") < (" (ls-compile y env fenv) "))")))
-
-(define-compilation = (x y)
- (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) "))"))
-
-(define-compilation floor (x)
- (concat "(Math.floor(" (ls-compile x env fenv) "))"))
-
-(define-compilation null (x)
- (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 "(function () { var tmp = " (ls-compile x env fenv)
- "; return tmp === " (ls-compile nil nil nil) "? "
- (ls-compile nil nil nil)
- ": tmp.car; })()"))
-
-(define-compilation cdr (x)
- (concat "(function () { var tmp = " (ls-compile x env fenv)
- "; return tmp === " (ls-compile nil nil nil) "? "
- (ls-compile nil nil nil)
- ": tmp.cdr; })()"))
-
-(define-compilation setcar (x new)
- (concat "((" (ls-compile x env fenv) ").car = " (ls-compile new env fenv) ")"))
-
-(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) "}"))
-
-(define-compilation symbol-name (x)
- (concat "(" (ls-compile x env fenv) ").name"))
-
-(define-compilation eq (x y)
- (compile-bool
- (concat "(" (ls-compile x env fenv) " === " (ls-compile y env fenv) ")")))
-
-(define-compilation equal (x y)
- (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 string-length (x)
- (concat "(" (ls-compile x env fenv) ").length"))
-
-(define-compilation char (string index)
- (concat "("
- (ls-compile string env fenv)
- ").charCodeAt("
- (ls-compile index env fenv)
- ")"))
-
-(define-compilation concat-two (string1 string2)
- (concat "("
- (ls-compile string1 env fenv)
- ").concat("
- (ls-compile string2 env fenv)
- ")"))
-
-(define-compilation funcall (func &rest args)
- (concat "("
- (ls-compile func env fenv)
- ")("
- (join (mapcar (lambda (x)
- (ls-compile x env fenv))
- args)
- ", ")
- ")"))
-
-(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.apply(window, [" (ls-compile string env fenv) "])"))
-
-
-(define-compilation error (string)
- (concat "(function (){ throw " (ls-compile string env fenv) ";" "return 0;})()"))
-
-(define-compilation new ()
- "{}")
-
-(define-compilation get (object key)
- (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 object env fenv)
- ")["
- (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)))
-
-(defun ls-macroexpand-1 (form env fenv)
- (if (macrop (car form))
- (let ((binding (lookup-function (car form) *env*)))
- (if (eq (binding-type binding) 'macro)
- (apply (eval (binding-translation binding)) (cdr form))
- form))
- form))
-
-(defun compile-funcall (function args env fenv)
- (cond
- ((symbolp function)
- (concat (lookup-function-translation function fenv)
- "("
- (join (mapcar (lambda (x) (ls-compile x env fenv)) args)
- ", ")
- ")"))
- ((and (listp function) (eq (car function) 'lambda))
- (concat "(" (ls-compile function env fenv) ")("
- (join (mapcar (lambda (x) (ls-compile x env fenv)) args)
- ", ")
- ")"))
- (t
- (error (concat "Invalid function designator " (symbol-name function))))))
-
-(defun ls-compile (sexp env fenv)
- (cond
- ((symbolp sexp) (lookup-variable-translation sexp env))
- ((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
- ((listp sexp)
- (if (assoc (car sexp) *compilations*)
- (let ((comp (second (assoc (car sexp) *compilations*))))
- (apply comp env fenv (cdr sexp)))
- (if (macrop (car sexp))
- (ls-compile (ls-macroexpand-1 sexp env fenv) env fenv)
- (compile-funcall (car sexp) (cdr sexp) env fenv))))))
-
-(defun ls-compile-toplevel (sexp)
- (setq *toplevel-compilations* nil)
- (let ((code (ls-compile sexp nil nil)))
- (prog1
- (concat #+common-lisp (concat "/* " (princ-to-string sexp) " */")
- (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
- (setq *compilation-unit-checks* nil)
- (setq *env* (remove-if-not #'binding-declared *env*))
- (setq *fenv* (remove-if-not #'binding-declared *fenv*))
- ,@body)
- (dolist (check *compilation-unit-checks*)
- (funcall check))))
-
-(defun eval (x)
- (let ((code
- (with-compilation-unit
- (ls-compile-toplevel x nil nil))))
- (js-eval code)))
-
-
-;; 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))
- (c3 (ls-compile `(setq *variable-counter* ',*variable-counter*) nil nil))
- (c4 (ls-compile `(setq *function-counter* ',*function-counter*) nil nil))
- (c5 (ls-compile `(setq *literal-counter* ',*literal-counter*) nil nil)))
- (setq *toplevel-compilations*
- (append *toplevel-compilations* (list c1 c2 c3 c4 c5)))))
-
-(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 / commitdiff