;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <http://www.gnu.org/licenses/>.
-;;; This code is executed when ecmalisp compiles this file
-;;; itself. The compiler provides compilation of some special forms,
-;;; as well as funcalls and macroexpansion, but no functions. So, we
-;;; define the Lisp world from scratch. This code has to define enough
-;;; language to the compiler to be able to run.
-
-#+ecmalisp
-(progn
- (eval-when-compile
- (%compile-defmacro 'defmacro
- '(function
- (lambda (name args &rest body)
- `(eval-when-compile
- (%compile-defmacro ',name
- '(function
- (lambda ,(mapcar #'(lambda (x)
- (if (eq x '&body)
- '&rest
- x))
- args)
- ,@body))))))))
-
- (defmacro declaim (&rest decls)
- `(eval-when-compile
- ,@(mapcar (lambda (decl) `(!proclaim ',decl)) decls)))
-
- (defmacro defconstant (name value &optional docstring)
- `(progn
- (declaim (special ,name))
- (declaim (constant ,name))
- (setq ,name ,value)
- ,@(when (stringp docstring) `((oset ',name "vardoc" ,docstring)))
- ',name))
-
- (defconstant t 't)
- (defconstant nil 'nil)
- (js-vset "nil" nil)
-
- (defmacro lambda (args &body body)
- `(function (lambda ,args ,@body)))
-
- (defmacro when (condition &body body)
- `(if ,condition (progn ,@body) nil))
-
- (defmacro unless (condition &body body)
- `(if ,condition nil (progn ,@body)))
-
- (defmacro defvar (name value &optional docstring)
- `(progn
- (declaim (special ,name))
- (unless (boundp ',name) (setq ,name ,value))
- ,@(when (stringp docstring) `((oset ',name "vardoc" ,docstring)))
- ',name))
-
- (defmacro defparameter (name value &optional docstring)
- `(progn
- (setq ,name ,value)
- ,@(when (stringp docstring) `((oset ',name "vardoc" ,docstring)))
- ',name))
-
- (defmacro named-lambda (name args &rest body)
- (let ((x (gensym "FN")))
- `(let ((,x (lambda ,args ,@body)))
- (oset ,x "fname" ,name)
- ,x)))
-
- (defmacro defun (name args &rest body)
- `(progn
- (fset ',name
- (named-lambda ,(symbol-name name) ,args
- ,@(if (and (stringp (car body)) (not (null (cdr body))))
- `(,(car body) (block ,name ,@(cdr body)))
- `((block ,name ,@body)))))
- ',name))
-
- (defun null (x)
- (eq x nil))
-
- (defmacro return (&optional value)
- `(return-from nil ,value))
-
- (defmacro while (condition &body body)
- `(block nil (%while ,condition ,@body)))
-
- (defvar *gensym-counter* 0)
- (defun gensym (&optional (prefix "G"))
- (setq *gensym-counter* (+ *gensym-counter* 1))
- (make-symbol (concat-two prefix (integer-to-string *gensym-counter*))))
-
- (defun boundp (x)
- (boundp x))
-
- ;; Basic functions
- (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 truncate (x y) (floor (/ x y)))
-
- (defun eql (x y) (eq x y))
-
- (defun not (x) (if x nil t))
-
- (defun cons (x y ) (cons x y))
- (defun consp (x) (consp x))
-
- (defun car (x)
- "Return the CAR part of a cons, or NIL if X is null."
- (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 rest (x) (cdr x))
-
- (defun list (&rest args) args)
- (defun atom (x)
- (not (consp x)))
-
- ;; Basic macros
-
- (defmacro incf (x &optional (delta 1))
- `(setq ,x (+ ,x ,delta)))
-
- (defmacro decf (x &optional (delta 1))
- `(setq ,x (- ,x ,delta)))
-
- (defmacro push (x place)
- `(setq ,place (cons ,x ,place)))
-
- (defmacro dolist (iter &body body)
- (let ((var (first iter))
- (g!list (gensym)))
- `(block nil
- (let ((,g!list ,(second iter))
- (,var nil))
- (%while ,g!list
- (setq ,var (car ,g!list))
- (tagbody ,@body)
- (setq ,g!list (cdr ,g!list)))
- ,(third iter)))))
-
- (defmacro dotimes (iter &body body)
- (let ((g!to (gensym))
- (var (first iter))
- (to (second iter))
- (result (third iter)))
- `(block nil
- (let ((,var 0)
- (,g!to ,to))
- (%while (< ,var ,g!to)
- (tagbody ,@body)
- (incf ,var))
- ,result))))
-
- (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 (gensym)))
- `(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."))))))
-
- (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 (gensym)))
- `(let ((,g ,(car forms)))
- (if ,g ,g (or ,@(cdr forms))))))))
-
- (defmacro prog1 (form &body body)
- (let ((value (gensym)))
- `(let ((,value ,form))
- ,@body
- ,value)))
-
- (defmacro prog2 (form1 result &body body)
- `(prog1 (progn ,form1 ,result) ,@body)))
-
-
-;;; This couple of helper functions will be defined in both Common
-;;; Lisp and in Ecmalisp.
-(defun ensure-list (x)
- (if (listp x)
- x
- (list x)))
-
-(defun !reduce (func list initial)
- (if (null list)
- initial
- (!reduce func
- (cdr list)
- (funcall func initial (car list)))))
-
-;;; Go on growing the Lisp language in Ecmalisp, with more high
-;;; level utilities as well as correct versions of other
-;;; constructions.
-#+ecmalisp
-(progn
- (defun + (&rest args)
- (let ((r 0))
- (dolist (x args r)
- (incf r x))))
-
- (defun - (x &rest others)
- (if (null others)
- (- x)
- (let ((r x))
- (dolist (y others r)
- (decf r y)))))
-
- (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 revappend (list1 list2)
- (while list1
- (push (car list1) list2)
- (setq list1 (cdr list1)))
- list2)
-
- (defun reverse (list)
- (revappend list '()))
-
- (defmacro psetq (&rest pairs)
- (let ( ;; For each pair, we store here a list of the form
- ;; (VARIABLE GENSYM VALUE).
- (assignments '()))
- (while t
- (cond
- ((null pairs) (return))
- ((null (cdr pairs))
- (error "Odd paris in PSETQ"))
- (t
- (let ((variable (car pairs))
- (value (cadr pairs)))
- (push `(,variable ,(gensym) ,value) assignments)
- (setq pairs (cddr pairs))))))
- (setq assignments (reverse assignments))
- ;;
- `(let ,(mapcar #'cdr assignments)
- (setq ,@(!reduce #'append (mapcar #'butlast assignments) '())))))
-
- (defmacro do (varlist endlist &body body)
- `(block nil
- (let ,(mapcar (lambda (x) (list (first x) (second x))) varlist)
- (while t
- (when ,(car endlist)
- (return (progn ,(cdr endlist))))
- (tagbody ,@body)
- (psetq
- ,@(apply #'append
- (mapcar (lambda (v)
- (and (consp (cddr v))
- (list (first v) (third v))))
- varlist)))))))
-
- (defmacro do* (varlist endlist &body body)
- `(block nil
- (let* ,(mapcar (lambda (x) (list (first x) (second x))) varlist)
- (while t
- (when ,(car endlist)
- (return (progn ,(cdr endlist))))
- (tagbody ,@body)
- (setq
- ,@(apply #'append
- (mapcar (lambda (v)
- (and (consp (cddr v))
- (list (first v) (third v))))
- varlist)))))))
-
- (defun list-length (list)
- (let ((l 0))
- (while (not (null list))
- (incf l)
- (setq list (cdr list)))
- l))
-
- (defun length (seq)
- (cond
- ((stringp seq)
- (string-length seq))
- ((arrayp seq)
- (oget seq "length"))
- ((listp seq)
- (list-length seq))))
-
- (defun concat-two (s1 s2)
- (concat-two s1 s2))
-
- (defmacro with-collect (&body body)
- (let ((head (gensym))
- (tail (gensym)))
- `(let* ((,head (cons 'sentinel nil))
- (,tail ,head))
- (flet ((collect (x)
- (rplacd ,tail (cons x nil))
- (setq ,tail (cdr ,tail))
- x))
- ,@body)
- (cdr ,head))))
-
- (defun map1 (func list)
- (with-collect
- (while list
- (collect (funcall func (car list)))
- (setq list (cdr list)))))
-
- (defmacro loop (&body body)
- `(while t ,@body))
-
- (defun mapcar (func list &rest lists)
- (let ((lists (cons list lists)))
- (with-collect
- (block loop
- (loop
- (let ((elems (map1 #'car lists)))
- (do ((tail lists (cdr tail)))
- ((null tail))
- (when (null (car tail)) (return-from loop))
- (rplaca tail (cdar tail)))
- (collect (apply func elems))))))))
-
- (defun identity (x) x)
-
- (defun constantly (x)
- (lambda (&rest args)
- x))
-
- (defun copy-list (x)
- (mapcar #'identity x))
-
- (defun code-char (x) x)
- (defun char-code (x) x)
- (defun char= (x y) (= x y))
-
- (defun integerp (x)
- (and (numberp x) (= (floor x) x)))
-
- (defun plusp (x) (< 0 x))
- (defun minusp (x) (< x 0))
-
- (defun listp (x)
- (or (consp x) (null x)))
-
- (defun nthcdr (n list)
- (while (and (plusp n) list)
- (setq n (1- n))
- (setq list (cdr list)))
- list)
-
- (defun nth (n list)
- (car (nthcdr n list)))
-
- (defun last (x)
- (while (consp (cdr x))
- (setq x (cdr x)))
- x)
-
- (defun butlast (x)
- (and (consp (cdr x))
- (cons (car x) (butlast (cdr x)))))
-
- (defun member (x list)
- (while list
- (when (eql x (car list))
- (return list))
- (setq list (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 digit-char (weight)
- (and (<= 0 weight 9)
- (char "0123456789" weight)))
-
- (defun subseq (seq a &optional b)
- (cond
- ((stringp seq)
- (if b
- (slice seq a b)
- (slice seq a)))
- (t
- (error "Unsupported argument."))))
-
- (defun some (function seq)
- (cond
- ((stringp seq)
- (let ((index 0)
- (size (length seq)))
- (while (< index size)
- (when (funcall function (char seq index))
- (return-from some t))
- (incf index))
- nil))
- ((listp seq)
- (dolist (x seq nil)
- (when (funcall function x)
- (return t))))
- (t
- (error "Unknown sequence."))))
-
- (defun every (function seq)
- (cond
- ((stringp seq)
- (let ((index 0)
- (size (length seq)))
- (while (< index size)
- (unless (funcall function (char seq index))
- (return-from every nil))
- (incf index))
- t))
- ((listp seq)
- (dolist (x seq t)
- (unless (funcall function x)
- (return))))
- (t
- (error "Unknown sequence."))))
-
- (defun assoc (x alist)
- (while alist
- (if (eql x (caar alist))
- (return)
- (setq alist (cdr alist))))
- (car alist))
-
- (defun string (x)
- (cond ((stringp x) x)
- ((symbolp x) (symbol-name x))
- (t (char-to-string x))))
-
- (defun string= (s1 s2)
- (equal s1 s2))
-
- (defun fdefinition (x)
- (cond
- ((functionp x)
- x)
- ((symbolp x)
- (symbol-function x))
- (t
- (error "Invalid function"))))
-
- (defun disassemble (function)
- (write-line (lambda-code (fdefinition function)))
- nil)
-
- (defun documentation (x type)
- "Return the documentation of X. TYPE must be the symbol VARIABLE or FUNCTION."
- (ecase type
- (function
- (let ((func (fdefinition x)))
- (oget func "docstring")))
- (variable
- (unless (symbolp x)
- (error "Wrong argument type! it should be a symbol"))
- (oget x "vardoc"))))
-
- (defmacro multiple-value-bind (variables value-from &body body)
- `(multiple-value-call (lambda (&optional ,@variables &rest ,(gensym))
- ,@body)
- ,value-from))
-
- (defmacro multiple-value-list (value-from)
- `(multiple-value-call #'list ,value-from))
-
-
- ;;; Generalized references (SETF)
-
- (defvar *setf-expanders* nil)
-
- (defun get-setf-expansion (place)
- (if (symbolp place)
- (let ((value (gensym)))
- (values nil
- nil
- `(,value)
- `(setq ,place ,value)
- place))
- (let* ((access-fn (car place))
- (expander (cdr (assoc access-fn *setf-expanders*))))
- (when (null expander)
- (error "Unknown generalized reference."))
- (apply expander (cdr place)))))
-
- (defmacro define-setf-expander (access-fn lambda-list &body body)
- (unless (symbolp access-fn)
- (error "ACCESS-FN must be a symbol."))
- `(progn (push (cons ',access-fn (lambda ,lambda-list ,@body))
- *setf-expanders*)
- ',access-fn))
-
- (defmacro setf (&rest pairs)
- (cond
- ((null pairs)
- nil)
- ((null (cdr pairs))
- (error "Odd number of arguments to setf."))
- ((null (cddr pairs))
- (let ((place (first pairs))
- (value (second pairs)))
- (multiple-value-bind (vars vals store-vars writer-form reader-form)
- (get-setf-expansion place)
- ;; TODO: Optimize the expansion a little bit to avoid let*
- ;; or multiple-value-bind when unnecesary.
- `(let* ,(mapcar #'list vars vals)
- (multiple-value-bind ,store-vars
- ,value
- ,writer-form)))))
- (t
- `(progn
- ,@(do ((pairs pairs (cddr pairs))
- (result '() (cons `(setf ,(car pairs) ,(cadr pairs)) result)))
- ((null pairs)
- (reverse result)))))))
-
- (define-setf-expander car (x)
- (let ((cons (gensym))
- (new-value (gensym)))
- (values (list cons)
- (list x)
- (list new-value)
- `(progn (rplaca ,cons ,new-value) ,new-value)
- `(car ,cons))))
-
- (define-setf-expander cdr (x)
- (let ((cons (gensym))
- (new-value (gensym)))
- (values (list cons)
- (list x)
- (list new-value)
- `(progn (rplacd ,cons ,new-value) ,new-value)
- `(car ,cons))))
-
- ;;; Packages
-
- (defvar *package-list* nil)
-
- (defun list-all-packages ()
- *package-list*)
-
- (defun make-package (name &key use)
- (let ((package (new))
- (use (mapcar #'find-package-or-fail use)))
- (oset package "packageName" name)
- (oset package "symbols" (new))
- (oset package "exports" (new))
- (oset package "use" use)
- (push package *package-list*)
- package))
-
- (defun packagep (x)
- (and (objectp x) (in "symbols" x)))
-
- (defun find-package (package-designator)
- (when (packagep package-designator)
- (return-from find-package package-designator))
- (let ((name (string package-designator)))
- (dolist (package *package-list*)
- (when (string= (package-name package) name)
- (return package)))))
-
- (defun find-package-or-fail (package-designator)
- (or (find-package package-designator)
- (error "Package unknown.")))
-
- (defun package-name (package-designator)
- (let ((package (find-package-or-fail package-designator)))
- (oget package "packageName")))
-
- (defun %package-symbols (package-designator)
- (let ((package (find-package-or-fail package-designator)))
- (oget package "symbols")))
-
- (defun package-use-list (package-designator)
- (let ((package (find-package-or-fail package-designator)))
- (oget package "use")))
-
- (defun %package-external-symbols (package-designator)
- (let ((package (find-package-or-fail package-designator)))
- (oget package "exports")))
-
- (defvar *common-lisp-package*
- (make-package "CL"))
-
- (defvar *user-package*
- (make-package "CL-USER" :use (list *common-lisp-package*)))
-
- (defvar *keyword-package*
- (make-package "KEYWORD"))
-
- (defun keywordp (x)
- (and (symbolp x) (eq (symbol-package x) *keyword-package*)))
-
- (defvar *package* *common-lisp-package*)
-
- (defmacro in-package (package-designator)
- `(eval-when-compile
- (setq *package* (find-package-or-fail ,package-designator))))
-
- ;; This function is used internally to initialize the CL package
- ;; with the symbols built during bootstrap.
- (defun %intern-symbol (symbol)
- (let* ((package
- (if (in "package" symbol)
- (find-package-or-fail (oget symbol "package"))
- *common-lisp-package*))
- (symbols (%package-symbols package)))
- (oset symbol "package" package)
- (when (eq package *keyword-package*)
- (oset symbol "value" symbol))
- (oset symbols (symbol-name symbol) symbol)))
-
- (defun find-symbol (name &optional (package *package*))
- (let* ((package (find-package-or-fail package))
- (externals (%package-external-symbols package))
- (symbols (%package-symbols package)))
- (cond
- ((in name externals)
- (values (oget externals name) :external))
- ((in name symbols)
- (values (oget symbols name) :internal))
- (t
- (dolist (used (package-use-list package) (values nil nil))
- (let ((exports (%package-external-symbols used)))
- (when (in name exports)
- (return (values (oget exports name) :inherit)))))))))
-
- (defun intern (name &optional (package *package*))
- (let ((package (find-package-or-fail package)))
- (multiple-value-bind (symbol foundp)
- (find-symbol name package)
- (if foundp
- (values symbol foundp)
- (let ((symbols (%package-symbols package)))
- (oget symbols name)
- (let ((symbol (make-symbol name)))
- (oset symbol "package" package)
- (when (eq package *keyword-package*)
- (oset symbol "value" symbol)
- (export (list symbol) package))
- (oset symbols name symbol)
- (values symbol nil)))))))
-
- (defun symbol-package (symbol)
- (unless (symbolp symbol)
- (error "it is not a symbol"))
- (oget symbol "package"))
-
- (defun export (symbols &optional (package *package*))
- (let ((exports (%package-external-symbols package)))
- (dolist (symb symbols t)
- (oset exports (symbol-name symb) symb))))
-
- (defun get-universal-time ()
- (+ (get-unix-time) 2208988800)))
-
-
-;;; The compiler offers some primitives and special forms which are
-;;; not found in Common Lisp, for instance, while. So, we grow Common
-;;; Lisp a bit to it can execute the rest of the file.
-#+common-lisp
-(progn
- (defmacro while (condition &body body)
- `(do ()
- ((not ,condition))
- ,@body))
-
- (defmacro eval-when-compile (&body body)
- `(eval-when (:compile-toplevel :load-toplevel :execute)
- ,@body))
-
- (defun concat-two (s1 s2)
- (concatenate 'string s1 s2))
-
- (defun aset (array idx value)
- (setf (aref array idx) value)))
-
-;;; At this point, no matter if Common Lisp or ecmalisp is compiling
-;;; from here, this code will compile on both. We define some helper
-;;; functions now for string manipulation and so on. They will be
-;;; useful in the compiler, mostly.
-
-(defvar *newline* (string (code-char 10)))
-
-(defun concat (&rest strs)
- (!reduce #'concat-two strs ""))
-
-(defmacro concatf (variable &body form)
- `(setq ,variable (concat ,variable (progn ,@form))))
-
-;;; Concatenate a list of strings, with a separator
-(defun join (list &optional (separator ""))
- (cond
- ((null list)
- "")
- ((null (cdr list))
- (car list))
- (t
- (concat (car list)
- separator
- (join (cdr list) separator)))))
-
-(defun join-trailing (list &optional (separator ""))
- (if (null list)
- ""
- (concat (car list) separator (join-trailing (cdr list) separator))))
-
-(defun mapconcat (func list)
- (join (mapcar func list)))
-
-(defun vector-to-list (vector)
- (let ((list nil)
- (size (length vector)))
- (dotimes (i size (reverse list))
- (push (aref vector i) list))))
-
-(defun list-to-vector (list)
- (let ((v (make-array (length list)))
- (i 0))
- (dolist (x list v)
- (aset v i x)
- (incf i))))
-
-#+ecmalisp
-(progn
- (defun values-list (list)
- (values-array (list-to-vector list)))
-
- (defun values (&rest args)
- (values-list args)))
-
-(defun integer-to-string (x)
- (cond
- ((zerop x)
- "0")
- ((minusp x)
- (concat "-" (integer-to-string (- 0 x))))
- (t
- (let ((digits nil))
- (while (not (zerop x))
- (push (mod x 10) digits)
- (setq x (truncate x 10)))
- (mapconcat (lambda (x) (string (digit-char x)))
- digits)))))
-
-
-;;; Printer
-
-#+ecmalisp
-(progn
- (defun prin1-to-string (form)
- (cond
- ((symbolp form)
- (multiple-value-bind (symbol foundp)
- (find-symbol (symbol-name form) *package*)
- (if (and foundp (eq symbol form))
- (symbol-name form)
- (let ((package (symbol-package form))
- (name (symbol-name form)))
- (concat (cond
- ((null package) "#")
- ((eq package (find-package "KEYWORD")) "")
- (t (package-name package)))
- ":" name)))))
- ((integerp form) (integer-to-string form))
- ((stringp form) (concat "\"" (escape-string form) "\""))
- ((functionp form)
- (let ((name (oget form "fname")))
- (if name
- (concat "#<FUNCTION " name ">")
- (concat "#<FUNCTION>"))))
- ((listp form)
- (concat "("
- (join-trailing (mapcar #'prin1-to-string (butlast form)) " ")
- (let ((last (last form)))
- (if (null (cdr last))
- (prin1-to-string (car last))
- (concat (prin1-to-string (car last)) " . " (prin1-to-string (cdr last)))))
- ")"))
- ((arrayp form)
- (concat "#" (prin1-to-string (vector-to-list form))))
- ((packagep form)
- (concat "#<PACKAGE " (package-name form) ">"))))
-
- (defun write-line (x)
- (write-string x)
- (write-string *newline*)
- x)
-
- (defun warn (string)
- (write-string "WARNING: ")
- (write-line string))
-
- (defun print (x)
- (write-line (prin1-to-string x))
- x))
-
-
-;;;; Reader
-
-;;; The Lisp reader, parse strings and return Lisp objects. The main
-;;; entry points are `ls-read' and `ls-read-from-string'.
-
-(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))
- (rplacd 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= #\( ch)))
-
-(defun read-until (stream func)
- (let ((string "")
- (ch))
- (setq ch (%peek-char stream))
- (while (and ch (not (funcall func ch)))
- (setq string (concat string (string ch)))
- (%read-char stream)
- (setq ch (%peek-char stream)))
- string))
-
-(defun skip-whitespaces-and-comments (stream)
- (let (ch)
- (skip-whitespaces stream)
- (setq ch (%peek-char stream))
- (while (and ch (char= ch #\;))
- (read-until stream (lambda (x) (char= x #\newline)))
- (skip-whitespaces stream)
- (setq ch (%peek-char stream)))))
-
-(defun %read-list (stream)
- (skip-whitespaces-and-comments stream)
- (let ((ch (%peek-char stream)))
- (cond
- ((null ch)
- (error "Unspected EOF"))
- ((char= ch #\))
- (%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))
-
-(defun read-sharp (stream)
- (%read-char stream)
- (ecase (%read-char stream)
- (#\'
- (list 'function (ls-read stream)))
- (#\( (list-to-vector (%read-list stream)))
- (#\: (make-symbol (string-upcase (read-until stream #'terminalp))))
- (#\\
- (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 "ecmalisp")
- (ls-read stream))
- (t
- (error "Unknown reader form.")))))))
-
-;;; Parse a string of the form NAME, PACKAGE:NAME or
-;;; PACKAGE::NAME and return the name. If the string is of the
-;;; form 1) or 3), but the symbol does not exist, it will be created
-;;; and interned in that package.
-(defun read-symbol (string)
- (let ((size (length string))
- package name internalp index)
- (setq index 0)
- (while (and (< index size)
- (not (char= (char string index) #\:)))
- (incf index))
- (cond
- ;; No package prefix
- ((= index size)
- (setq name string)
- (setq package *package*)
- (setq internalp t))
- (t
- ;; Package prefix
- (if (zerop index)
- (setq package "KEYWORD")
- (setq package (string-upcase (subseq string 0 index))))
- (incf index)
- (when (char= (char string index) #\:)
- (setq internalp t)
- (incf index))
- (setq name (subseq string index))))
- ;; Canonalize symbol name and package
- (setq name (string-upcase name))
- (setq package (find-package package))
- ;; TODO: PACKAGE:SYMBOL should signal error if SYMBOL is not an
- ;; external symbol from PACKAGE.
- (if (or internalp (eq package (find-package "KEYWORD")))
- (intern name package)
- (find-symbol name package))))
-
-
-(defun !parse-integer (string junk-allow)
- (block nil
- (let ((value 0)
- (index 0)
- (size (length string))
- (sign 1))
- (when (zerop size) (return (values nil 0)))
- ;; Optional sign
- (case (char string 0)
- (#\+ (incf index))
- (#\- (setq sign -1)
- (incf index)))
- ;; First digit
- (unless (and (< index size)
- (setq value (digit-char-p (char string index))))
- (return (values nil index)))
- (incf index)
- ;; Other digits
- (while (< index size)
- (let ((digit (digit-char-p (char string index))))
- (unless digit (return))
- (setq value (+ (* value 10) digit))
- (incf index)))
- (if (or junk-allow
- (= index size)
- (char= (char string index) #\space))
- (values (* sign value) index)
- (values nil index)))))
-
-#+ecmalisp
-(defun parse-integer (string)
- (!parse-integer string nil))
-
-(defvar *eof* (gensym))
-(defun ls-read (stream)
- (skip-whitespaces-and-comments stream)
- (let ((ch (%peek-char stream)))
- (cond
- ((or (null ch) (char= 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-sharp stream))
- (t
- (let ((string (read-until stream #'terminalp)))
- (or (values (!parse-integer string nil))
- (read-symbol string)))))))
-
-(defun ls-read-from-string (string)
- (ls-read (make-string-stream string)))
-
-
-;;;; Compiler
-
-;;; Translate the Lisp code to Javascript. It will compile the special
-;;; forms. Some primitive functions are compiled as special forms
-;;; too. The respective real functions are defined in the target (see
-;;; the beginning of this file) as well as some primitive functions.
-
-(defun code (&rest args)
- (mapconcat (lambda (arg)
- (cond
- ((null arg) "")
- ((integerp arg) (integer-to-string arg))
- ((stringp arg) arg)
- (t (error "Unknown argument."))))
- args))
-
-;;; Wrap X with a Javascript code to convert the result from
-;;; Javascript generalized booleans to T or NIL.
-(defun js!bool (x)
- (code "(" x "?" (ls-compile t) ": " (ls-compile nil) ")"))
-
-;;; Concatenate the arguments and wrap them with a self-calling
-;;; Javascript anonymous function. It is used to make some Javascript
-;;; statements valid expressions and provide a private scope as well.
-;;; It could be defined as function, but we could do some
-;;; preprocessing in the future.
-(defmacro js!selfcall (&body body)
- `(code "(function(){" *newline* (indent ,@body) "})()"))
-
-;;; Like CODE, but prefix each line with four spaces. Two versions
-;;; of this function are available, because the Ecmalisp version is
-;;; very slow and bootstraping was annoying.
-
-#+ecmalisp
-(defun indent (&rest string)
- (let ((input (apply #'code string)))
- (let ((output "")
- (index 0)
- (size (length input)))
- (when (plusp (length input)) (concatf output " "))
- (while (< index size)
- (let ((str
- (if (and (char= (char input index) #\newline)
- (< index (1- size))
- (not (char= (char input (1+ index)) #\newline)))
- (concat (string #\newline) " ")
- (string (char input index)))))
- (concatf output str))
- (incf index))
- output)))
-
-#+common-lisp
-(defun indent (&rest string)
- (with-output-to-string (*standard-output*)
- (with-input-from-string (input (apply #'code string))
+(defvar *source*
+ '(("boot" :target)
+ ("compat" :host)
+ ("utils" :both)
+ ("print" :target)
+ ("read" :both)
+ ("compiler" :both)
+ ("toplevel" :target)))
+
+(defun source-pathname
+ (filename &key (directory '(:relative "src")) (type nil) (defaults filename))
+ (if type
+ (make-pathname :type type :directory directory :defaults defaults)
+ (make-pathname :directory directory :defaults defaults)))
+
+;;; Compile ecmalisp into the host
+(with-compilation-unit ()
+ (dolist (input *source*)
+ (when (member (cadr input) '(:host :both))
+ (compile-file (source-pathname (car input))))))
+
+;;; Load ecmalisp into the host
+(dolist (input *source*)
+ (when (member (cadr input) '(:host :both))
+ (load (source-pathname (car input)))))
+
+(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 out &key print)
+ (let ((*compiling-file* t)
+ (*compile-print-toplevels* print))
+ (let* ((source (read-whole-file filename))
+ (in (make-string-stream source)))
+ (format t "Compiling ~a...~%" filename)
(loop
- for line = (read-line input nil)
- while line
- do (write-string " ")
- do (write-line line)))))
-
-
-;;; A Form can return a multiple values object calling VALUES, like
-;;; values(arg1, arg2, ...). It will work in any context, as well as
-;;; returning an individual object. However, if the special variable
-;;; `*multiple-value-p*' is NIL, is granted that only the primary
-;;; value will be used, so we can optimize to avoid the VALUES
-;;; function call.
-(defvar *multiple-value-p* nil)
-
-(defun make-binding (name type value &optional declarations)
- (list name type value declarations))
-
-(defun binding-name (b) (first b))
-(defun binding-type (b) (second b))
-(defun binding-value (b) (third b))
-(defun binding-declarations (b) (fourth b))
-
-(defun set-binding-value (b value)
- (rplaca (cddr b) value))
-
-(defun set-binding-declarations (b value)
- (rplaca (cdddr b) value))
-
-(defun push-binding-declaration (decl b)
- (set-binding-declarations b (cons decl (binding-declarations b))))
-
-
-(defun make-lexenv ()
- (list nil nil nil nil))
-
-(defun copy-lexenv (lexenv)
- (copy-list lexenv))
-
-(defun push-to-lexenv (binding lexenv namespace)
- (ecase namespace
- (variable (rplaca lexenv (cons binding (car lexenv))))
- (function (rplaca (cdr lexenv) (cons binding (cadr lexenv))))
- (block (rplaca (cddr lexenv) (cons binding (caddr lexenv))))
- (gotag (rplaca (cdddr lexenv) (cons binding (cadddr lexenv))))))
-
-(defun extend-lexenv (bindings lexenv namespace)
- (let ((env (copy-lexenv lexenv)))
- (dolist (binding (reverse bindings) env)
- (push-to-lexenv binding env namespace))))
-
-(defun lookup-in-lexenv (name lexenv namespace)
- (assoc name (ecase namespace
- (variable (first lexenv))
- (function (second lexenv))
- (block (third lexenv))
- (gotag (fourth lexenv)))))
-
-(defvar *environment* (make-lexenv))
-
-(defvar *variable-counter* 0)
-(defun gvarname (symbol)
- (code "v" (incf *variable-counter*)))
-
-(defun translate-variable (symbol)
- (binding-value (lookup-in-lexenv symbol *environment* 'variable)))
-
-(defun extend-local-env (args)
- (let ((new (copy-lexenv *environment*)))
- (dolist (symbol args new)
- (let ((b (make-binding symbol 'variable (gvarname symbol))))
- (push-to-lexenv b new 'variable)))))
-
-;;; Toplevel compilations
-(defvar *toplevel-compilations* nil)
-
-(defun toplevel-compilation (string)
- (push string *toplevel-compilations*))
-
-(defun null-or-empty-p (x)
- (zerop (length x)))
-
-(defun get-toplevel-compilations ()
- (reverse (remove-if #'null-or-empty-p *toplevel-compilations*)))
-
-(defun %compile-defmacro (name lambda)
- (toplevel-compilation (ls-compile `',name))
- (push-to-lexenv (make-binding name 'macro lambda) *environment* 'function)
- name)
-
-(defun global-binding (name type namespace)
- (or (lookup-in-lexenv name *environment* namespace)
- (let ((b (make-binding name type nil)))
- (push-to-lexenv b *environment* namespace)
- b)))
-
-(defun claimp (symbol namespace claim)
- (let ((b (lookup-in-lexenv symbol *environment* namespace)))
- (and b (member claim (binding-declarations b)))))
-
-(defun !proclaim (decl)
- (case (car decl)
- (special
- (dolist (name (cdr decl))
- (let ((b (global-binding name 'variable 'variable)))
- (push-binding-declaration 'special b))))
- (notinline
- (dolist (name (cdr decl))
- (let ((b (global-binding name 'function 'function)))
- (push-binding-declaration 'notinline b))))
- (constant
- (dolist (name (cdr decl))
- (let ((b (global-binding name 'variable 'variable)))
- (push-binding-declaration 'constant b))))))
-
-#+ecmalisp
-(fset 'proclaim #'!proclaim)
-
-;;; Special forms
-
-(defvar *compilations* nil)
-
-(defmacro define-compilation (name args &body body)
- ;; Creates a new primitive `name' with parameters args and
- ;; @body. The body can access to the local environment through the
- ;; variable *ENVIRONMENT*.
- `(push (list ',name (lambda ,args (block ,name ,@body)))
- *compilations*))
-
-(define-compilation if (condition true false)
- (code "(" (ls-compile condition) " !== " (ls-compile nil)
- " ? " (ls-compile true *multiple-value-p*)
- " : " (ls-compile false *multiple-value-p*)
- ")"))
-
-(defvar *lambda-list-keywords* '(&optional &rest &key))
-
-(defun list-until-keyword (list)
- (if (or (null list) (member (car list) *lambda-list-keywords*))
- nil
- (cons (car list) (list-until-keyword (cdr list)))))
-
-(defun lambda-list-section (keyword lambda-list)
- (list-until-keyword (cdr (member keyword lambda-list))))
-
-(defun lambda-list-required-arguments (lambda-list)
- (list-until-keyword lambda-list))
-
-(defun lambda-list-optional-arguments-with-default (lambda-list)
- (mapcar #'ensure-list (lambda-list-section '&optional lambda-list)))
-
-(defun lambda-list-optional-arguments (lambda-list)
- (mapcar #'car (lambda-list-optional-arguments-with-default lambda-list)))
-
-(defun lambda-list-rest-argument (lambda-list)
- (let ((rest (lambda-list-section '&rest lambda-list)))
- (when (cdr rest)
- (error "Bad lambda-list"))
- (car rest)))
-
-(defun lambda-list-keyword-arguments-canonical (lambda-list)
- (flet ((canonalize (keyarg)
- ;; Build a canonical keyword argument descriptor, filling
- ;; the optional fields. The result is a list of the form
- ;; ((keyword-name var) init-form).
- (let* ((arg (ensure-list keyarg))
- (init-form (cadr arg))
- var
- keyword-name)
- (if (listp (car arg))
- (setq var (cadr (car arg))
- keyword-name (car (car arg)))
- (setq var (car arg)
- keyword-name (intern (symbol-name (car arg)) "KEYWORD")))
- `((,keyword-name ,var) ,init-form))))
- (mapcar #'canonalize (lambda-list-section '&key lambda-list))))
-
-(defun lambda-list-keyword-arguments (lambda-list)
- (mapcar (lambda (keyarg) (second (first keyarg)))
- (lambda-list-keyword-arguments-canonical lambda-list)))
-
-(defun lambda-docstring-wrapper (docstring &rest strs)
- (if docstring
- (js!selfcall
- "var func = " (join strs) ";" *newline*
- "func.docstring = '" docstring "';" *newline*
- "return func;" *newline*)
- (apply #'code strs)))
-
-(defun lambda-check-argument-count
- (n-required-arguments n-optional-arguments rest-p)
- ;; Note: Remember that we assume that the number of arguments of a
- ;; call is at least 1 (the values argument).
- (let ((min (1+ n-required-arguments))
- (max (if rest-p 'n/a (+ 1 n-required-arguments n-optional-arguments))))
- (block nil
- ;; Special case: a positive exact number of arguments.
- (when (and (< 1 min) (eql min max))
- (return (code "checkArgs(arguments, " min ");" *newline*)))
- ;; General case:
- (code
- (when (< 1 min)
- (code "checkArgsAtLeast(arguments, " min ");" *newline*))
- (when (numberp max)
- (code "checkArgsAtMost(arguments, " max ");" *newline*))))))
-
-(defun compile-lambda-optional (lambda-list)
- (let* ((optional-arguments (lambda-list-optional-arguments lambda-list))
- (n-required-arguments (length (lambda-list-required-arguments lambda-list)))
- (n-optional-arguments (length optional-arguments)))
- (when optional-arguments
- (code "switch(arguments.length-1){" *newline*
- (let ((optional-and-defaults
- (lambda-list-optional-arguments-with-default lambda-list))
- (cases nil)
- (idx 0))
- (progn
- (while (< idx n-optional-arguments)
- (let ((arg (nth idx optional-and-defaults)))
- (push (code "case " (+ idx n-required-arguments) ":" *newline*
- (translate-variable (car arg))
- "="
- (ls-compile (cadr arg))
- ";" *newline*)
- cases)
- (incf idx)))
- (push (code "default: break;" *newline*) cases)
- (join (reverse cases))))
- "}" *newline*))))
-
-(defun compile-lambda-rest (lambda-list)
- (let ((n-required-arguments (length (lambda-list-required-arguments lambda-list)))
- (n-optional-arguments (length (lambda-list-optional-arguments lambda-list)))
- (rest-argument (lambda-list-rest-argument lambda-list)))
- (when rest-argument
- (let ((js!rest (translate-variable rest-argument)))
- (code "var " js!rest "= " (ls-compile nil) ";" *newline*
- "for (var i = arguments.length-1; i>="
- (+ 1 n-required-arguments n-optional-arguments)
- "; i--)" *newline*
- (indent js!rest " = {car: arguments[i], cdr: ") js!rest "};"
- *newline*)))))
-
-(defun compile-lambda-parse-keywords (lambda-list)
- (let ((n-required-arguments
- (length (lambda-list-required-arguments lambda-list)))
- (n-optional-arguments
- (length (lambda-list-optional-arguments lambda-list)))
- (keyword-arguments
- (lambda-list-keyword-arguments-canonical lambda-list)))
- (code
- ;; Declare variables
- (mapconcat (lambda (arg)
- (let ((var (second (car arg))))
- (code "var " (translate-variable var) "; " *newline*)))
- keyword-arguments)
- ;; Parse keywords
- (flet ((parse-keyword (keyarg)
- ;; ((keyword-name var) init-form)
- (code "for (i=" (+ 1 n-required-arguments n-optional-arguments)
- "; i<arguments.length; i+=2){" *newline*
- (indent
- "if (arguments[i] === " (ls-compile (caar keyarg)) "){" *newline*
- (indent (translate-variable (cadr (car keyarg)))
- " = arguments[i+1];"
- *newline*
- "break;" *newline*)
- "}" *newline*)
- "}" *newline*
- ;; Default value
- "if (i == arguments.length){" *newline*
- (indent
- (translate-variable (cadr (car keyarg)))
- " = "
- (ls-compile (cadr keyarg))
- ";" *newline*)
- "}" *newline*)))
- (when keyword-arguments
- (code "var i;" *newline*
- (mapconcat #'parse-keyword keyword-arguments))))
- ;; Check for unknown keywords
- (when keyword-arguments
- (code "for (i=" (+ 1 n-required-arguments n-optional-arguments)
- "; i<arguments.length; i+=2){" *newline*
- (indent "if ("
- (join (mapcar (lambda (x)
- (concat "arguments[i] !== " (ls-compile (caar x))))
- keyword-arguments)
- " && ")
- ")" *newline*
- (indent
- "throw 'Unknown keyword argument ' + arguments[i].name;" *newline*))
- "}" *newline*)))))
-
-(defun compile-lambda (lambda-list body)
- (let ((required-arguments (lambda-list-required-arguments lambda-list))
- (optional-arguments (lambda-list-optional-arguments lambda-list))
- (keyword-arguments (lambda-list-keyword-arguments lambda-list))
- (rest-argument (lambda-list-rest-argument lambda-list))
- documentation)
- ;; Get the documentation string for the lambda function
- (when (and (stringp (car body))
- (not (null (cdr body))))
- (setq documentation (car body))
- (setq body (cdr body)))
- (let ((n-required-arguments (length required-arguments))
- (n-optional-arguments (length optional-arguments))
- (*environment* (extend-local-env
- (append (ensure-list rest-argument)
- required-arguments
- optional-arguments
- keyword-arguments))))
- (lambda-docstring-wrapper
- documentation
- "(function ("
- (join (cons "values"
- (mapcar #'translate-variable
- (append required-arguments optional-arguments)))
- ",")
- "){" *newline*
- (indent
- ;; Check number of arguments
- (lambda-check-argument-count n-required-arguments
- n-optional-arguments
- (or rest-argument keyword-arguments))
- (compile-lambda-optional lambda-list)
- (compile-lambda-rest lambda-list)
- (compile-lambda-parse-keywords lambda-list)
- (let ((*multiple-value-p* t))
- (ls-compile-block body t)))
- "})"))))
-
-
-
-(defun setq-pair (var val)
- (let ((b (lookup-in-lexenv var *environment* 'variable)))
- (if (and (eq (binding-type b) 'variable)
- (not (member 'special (binding-declarations b)))
- (not (member 'constant (binding-declarations b))))
- (code (binding-value b) " = " (ls-compile val))
- (ls-compile `(set ',var ,val)))))
-
-(define-compilation setq (&rest pairs)
- (let ((result ""))
- (while t
- (cond
- ((null pairs) (return))
- ((null (cdr pairs))
- (error "Odd paris in SETQ"))
- (t
- (concatf result
- (concat (setq-pair (car pairs) (cadr pairs))
- (if (null (cddr pairs)) "" ", ")))
- (setq pairs (cddr pairs)))))
- (code "(" result ")")))
-
-;;; FFI Variable accessors
-(define-compilation js-vref (var)
- var)
-
-(define-compilation js-vset (var val)
- (code "(" var " = " (ls-compile val) ")"))
-
-
-;;; 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))
-
-
-(defvar *literal-symbols* nil)
-(defvar *literal-counter* 0)
-
-(defun genlit ()
- (code "l" (incf *literal-counter*)))
-
-(defun literal (sexp &optional recursive)
- (cond
- ((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (code "\"" (escape-string sexp) "\""))
- ((symbolp sexp)
- (or (cdr (assoc sexp *literal-symbols*))
- (let ((v (genlit))
- (s #+common-lisp
- (let ((package (symbol-package sexp)))
- (if (eq package (find-package "KEYWORD"))
- (code "{name: \"" (escape-string (symbol-name sexp))
- "\", 'package': '" (package-name package) "'}")
- (code "{name: \"" (escape-string (symbol-name sexp)) "\"}")))
- #+ecmalisp
- (let ((package (symbol-package sexp)))
- (if (null package)
- (code "{name: \"" (escape-string (symbol-name sexp)) "\"}")
- (ls-compile `(intern ,(symbol-name sexp) ,(package-name package)))))))
- (push (cons sexp v) *literal-symbols*)
- (toplevel-compilation (code "var " v " = " s))
- v)))
- ((consp sexp)
- (let* ((head (butlast sexp))
- (tail (last sexp))
- (c (code "QIList("
- (join-trailing (mapcar (lambda (x) (literal x t)) head) ",")
- (literal (car tail) t)
- ","
- (literal (cdr tail) t)
- ")")))
- (if recursive
- c
- (let ((v (genlit)))
- (toplevel-compilation (code "var " v " = " c))
- v))))
- ((arrayp sexp)
- (let ((elements (vector-to-list sexp)))
- (let ((c (concat "[" (join (mapcar #'literal elements) ", ") "]")))
- (if recursive
- c
- (let ((v (genlit)))
- (toplevel-compilation (code "var " v " = " c))
- v)))))))
-
-(define-compilation quote (sexp)
- (literal sexp))
-
-(define-compilation %while (pred &rest body)
- (js!selfcall
- "while(" (ls-compile pred) " !== " (ls-compile nil) "){" *newline*
- (indent (ls-compile-block body))
- "}"
- "return " (ls-compile nil) ";" *newline*))
-
-(define-compilation function (x)
- (cond
- ((and (listp x) (eq (car x) 'lambda))
- (compile-lambda (cadr x) (cddr x)))
- ((symbolp x)
- (let ((b (lookup-in-lexenv x *environment* 'function)))
- (if b
- (binding-value b)
- (ls-compile `(symbol-function ',x)))))))
-
-
-(defun make-function-binding (fname)
- (make-binding fname 'function (gvarname fname)))
-
-(defun compile-function-definition (list)
- (compile-lambda (car list) (cdr list)))
-
-(defun translate-function (name)
- (let ((b (lookup-in-lexenv name *environment* 'function)))
- (binding-value b)))
-
-(define-compilation flet (definitions &rest body)
- (let* ((fnames (mapcar #'car definitions))
- (fbody (mapcar #'cdr definitions))
- (cfuncs (mapcar #'compile-function-definition fbody))
- (*environment*
- (extend-lexenv (mapcar #'make-function-binding fnames)
- *environment*
- 'function)))
- (code "(function("
- (join (mapcar #'translate-function fnames) ",")
- "){" *newline*
- (let ((body (ls-compile-block body t)))
- (indent body))
- "})(" (join cfuncs ",") ")")))
-
-(define-compilation labels (definitions &rest body)
- (let* ((fnames (mapcar #'car definitions))
- (*environment*
- (extend-lexenv (mapcar #'make-function-binding fnames)
- *environment*
- 'function)))
- (js!selfcall
- (mapconcat (lambda (func)
- (code "var " (translate-function (car func))
- " = " (compile-lambda (cadr func) (cddr func))
- ";" *newline*))
- definitions)
- (ls-compile-block body t))))
-
-
-
-(defvar *compiling-file* nil)
-(define-compilation eval-when-compile (&rest body)
- (if *compiling-file*
- (progn
- (eval (cons 'progn body))
- nil)
- (ls-compile `(progn ,@body))))
-
-(defmacro define-transformation (name args form)
- `(define-compilation ,name ,args
- (ls-compile ,form)))
-
-(define-compilation progn (&rest body)
- (if (null (cdr body))
- (ls-compile (car body) *multiple-value-p*)
- (js!selfcall (ls-compile-block body t))))
-
-(defun special-variable-p (x)
- (and (claimp x 'variable 'special) t))
-
-;;; Wrap CODE to restore the symbol values of the dynamic
-;;; bindings. BINDINGS is a list of pairs of the form
-;;; (SYMBOL . PLACE), where PLACE is a Javascript variable
-;;; name to initialize the symbol value and where to stored
-;;; the old value.
-(defun let-binding-wrapper (bindings body)
- (when (null bindings)
- (return-from let-binding-wrapper body))
- (code
- "try {" *newline*
- (indent "var tmp;" *newline*
- (mapconcat
- (lambda (b)
- (let ((s (ls-compile `(quote ,(car b)))))
- (code "tmp = " s ".value;" *newline*
- s ".value = " (cdr b) ";" *newline*
- (cdr b) " = tmp;" *newline*)))
- bindings)
- body *newline*)
- "}" *newline*
- "finally {" *newline*
- (indent
- (mapconcat (lambda (b)
- (let ((s (ls-compile `(quote ,(car b)))))
- (code s ".value" " = " (cdr b) ";" *newline*)))
- bindings))
- "}" *newline*))
-
-(define-compilation let (bindings &rest body)
- (let* ((bindings (mapcar #'ensure-list bindings))
- (variables (mapcar #'first bindings))
- (cvalues (mapcar #'ls-compile (mapcar #'second bindings)))
- (*environment* (extend-local-env (remove-if #'special-variable-p variables)))
- (dynamic-bindings))
- (code "(function("
- (join (mapcar (lambda (x)
- (if (special-variable-p x)
- (let ((v (gvarname x)))
- (push (cons x v) dynamic-bindings)
- v)
- (translate-variable x)))
- variables)
- ",")
- "){" *newline*
- (let ((body (ls-compile-block body t)))
- (indent (let-binding-wrapper dynamic-bindings body)))
- "})(" (join cvalues ",") ")")))
-
-
-;;; Return the code to initialize BINDING, and push it extending the
-;;; current lexical environment if the variable is not special.
-(defun let*-initialize-value (binding)
- (let ((var (first binding))
- (value (second binding)))
- (if (special-variable-p var)
- (code (ls-compile `(setq ,var ,value)) ";" *newline*)
- (let* ((v (gvarname var))
- (b (make-binding var 'variable v)))
- (prog1 (code "var " v " = " (ls-compile value) ";" *newline*)
- (push-to-lexenv b *environment* 'variable))))))
-
-;;; Wrap BODY to restore the symbol values of SYMBOLS after body. It
-;;; DOES NOT generate code to initialize the value of the symbols,
-;;; unlike let-binding-wrapper.
-(defun let*-binding-wrapper (symbols body)
- (when (null symbols)
- (return-from let*-binding-wrapper body))
- (let ((store (mapcar (lambda (s) (cons s (gvarname s)))
- (remove-if-not #'special-variable-p symbols))))
- (code
- "try {" *newline*
- (indent
- (mapconcat (lambda (b)
- (let ((s (ls-compile `(quote ,(car b)))))
- (code "var " (cdr b) " = " s ".value;" *newline*)))
- store)
- body)
- "}" *newline*
- "finally {" *newline*
- (indent
- (mapconcat (lambda (b)
- (let ((s (ls-compile `(quote ,(car b)))))
- (code s ".value" " = " (cdr b) ";" *newline*)))
- store))
- "}" *newline*)))
-
-(define-compilation let* (bindings &rest body)
- (let ((bindings (mapcar #'ensure-list bindings))
- (*environment* (copy-lexenv *environment*)))
- (js!selfcall
- (let ((specials (remove-if-not #'special-variable-p (mapcar #'first bindings)))
- (body (concat (mapconcat #'let*-initialize-value bindings)
- (ls-compile-block body t))))
- (let*-binding-wrapper specials body)))))
-
-
-(defvar *block-counter* 0)
-
-(define-compilation block (name &rest body)
- (let* ((tr (incf *block-counter*))
- (b (make-binding name 'block tr)))
- (when *multiple-value-p*
- (push-binding-declaration 'multiple-value b))
- (let* ((*environment* (extend-lexenv (list b) *environment* 'block))
- (cbody (ls-compile-block body t)))
- (if (member 'used (binding-declarations b))
- (js!selfcall
- "try {" *newline*
- (indent cbody)
- "}" *newline*
- "catch (cf){" *newline*
- " if (cf.type == 'block' && cf.id == " tr ")" *newline*
- (if *multiple-value-p*
- " return values.apply(this, forcemv(cf.values));"
- " return cf.values;")
- *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*)
- (js!selfcall cbody)))))
-
-(define-compilation return-from (name &optional value)
- (let* ((b (lookup-in-lexenv name *environment* 'block))
- (multiple-value-p (member 'multiple-value (binding-declarations b))))
- (when (null b)
- (error (concat "Unknown block `" (symbol-name name) "'.")))
- (push-binding-declaration 'used b)
- (js!selfcall
- (when multiple-value-p (code "var values = mv;" *newline*))
- "throw ({"
- "type: 'block', "
- "id: " (binding-value b) ", "
- "values: " (ls-compile value multiple-value-p) ", "
- "message: 'Return from unknown block " (symbol-name name) ".'"
- "})")))
-
-(define-compilation catch (id &rest body)
- (js!selfcall
- "var id = " (ls-compile id) ";" *newline*
- "try {" *newline*
- (indent (ls-compile-block body t)) *newline*
- "}" *newline*
- "catch (cf){" *newline*
- " if (cf.type == 'catch' && cf.id == id)" *newline*
- (if *multiple-value-p*
- " return values.apply(this, forcemv(cf.values));"
- " return pv.apply(this, forcemv(cf.values));")
- *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*))
-
-(define-compilation throw (id value)
- (js!selfcall
- "var values = mv;" *newline*
- "throw ({"
- "type: 'catch', "
- "id: " (ls-compile id) ", "
- "values: " (ls-compile value t) ", "
- "message: 'Throw uncatched.'"
- "})"))
-
-
-(defvar *tagbody-counter* 0)
-(defvar *go-tag-counter* 0)
-
-(defun go-tag-p (x)
- (or (integerp x) (symbolp x)))
-
-(defun declare-tagbody-tags (tbidx body)
- (let ((bindings
- (mapcar (lambda (label)
- (let ((tagidx (integer-to-string (incf *go-tag-counter*))))
- (make-binding label 'gotag (list tbidx tagidx))))
- (remove-if-not #'go-tag-p body))))
- (extend-lexenv bindings *environment* 'gotag)))
-
-(define-compilation tagbody (&rest body)
- ;; Ignore the tagbody if it does not contain any go-tag. We do this
- ;; because 1) it is easy and 2) many built-in forms expand to a
- ;; implicit tagbody, so we save some space.
- (unless (some #'go-tag-p body)
- (return-from tagbody (ls-compile `(progn ,@body nil))))
- ;; The translation assumes the first form in BODY is a label
- (unless (go-tag-p (car body))
- (push (gensym "START") body))
- ;; Tagbody compilation
- (let ((tbidx *tagbody-counter*))
- (let ((*environment* (declare-tagbody-tags tbidx body))
- initag)
- (let ((b (lookup-in-lexenv (first body) *environment* 'gotag)))
- (setq initag (second (binding-value b))))
- (js!selfcall
- "var tagbody_" tbidx " = " initag ";" *newline*
- "tbloop:" *newline*
- "while (true) {" *newline*
- (indent "try {" *newline*
- (indent (let ((content ""))
- (code "switch(tagbody_" tbidx "){" *newline*
- "case " initag ":" *newline*
- (dolist (form (cdr body) content)
- (concatf content
- (if (not (go-tag-p form))
- (indent (ls-compile form) ";" *newline*)
- (let ((b (lookup-in-lexenv form *environment* 'gotag)))
- (code "case " (second (binding-value b)) ":" *newline*)))))
- "default:" *newline*
- " break tbloop;" *newline*
- "}" *newline*)))
- "}" *newline*
- "catch (jump) {" *newline*
- " if (jump.type == 'tagbody' && jump.id == " tbidx ")" *newline*
- " tagbody_" tbidx " = jump.label;" *newline*
- " else" *newline*
- " throw(jump);" *newline*
- "}" *newline*)
- "}" *newline*
- "return " (ls-compile nil) ";" *newline*))))
-
-(define-compilation go (label)
- (let ((b (lookup-in-lexenv label *environment* 'gotag))
- (n (cond
- ((symbolp label) (symbol-name label))
- ((integerp label) (integer-to-string label)))))
- (when (null b)
- (error (concat "Unknown tag `" n "'.")))
- (js!selfcall
- "throw ({"
- "type: 'tagbody', "
- "id: " (first (binding-value b)) ", "
- "label: " (second (binding-value b)) ", "
- "message: 'Attempt to GO to non-existing tag " n "'"
- "})" *newline*)))
-
-(define-compilation unwind-protect (form &rest clean-up)
- (js!selfcall
- "var ret = " (ls-compile nil) ";" *newline*
- "try {" *newline*
- (indent "ret = " (ls-compile form) ";" *newline*)
- "} finally {" *newline*
- (indent (ls-compile-block clean-up))
- "}" *newline*
- "return ret;" *newline*))
-
-(define-compilation multiple-value-call (func-form &rest forms)
- (js!selfcall
- "var func = " (ls-compile func-form) ";" *newline*
- "var args = [" (if *multiple-value-p* "values" "pv") "];" *newline*
- "return "
- (js!selfcall
- "var values = mv;" *newline*
- "var vs;" *newline*
- (mapconcat (lambda (form)
- (code "vs = " (ls-compile form t) ";" *newline*
- "if (typeof vs === 'object' && 'multiple-value' in vs)" *newline*
- (indent "args = args.concat(vs);" *newline*)
- "else" *newline*
- (indent "args.push(vs);" *newline*)))
- forms)
- "return func.apply(window, args);" *newline*) ";" *newline*))
-
-(define-compilation multiple-value-prog1 (first-form &rest forms)
- (js!selfcall
- "var args = " (ls-compile first-form *multiple-value-p*) ";" *newline*
- (ls-compile-block forms)
- "return args;" *newline*))
-
-
-
-;;; A little backquote implementation without optimizations of any
-;;; kind for ecmalisp.
-(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
-
-(defvar *builtins* nil)
-
-(defmacro define-raw-builtin (name args &body body)
- ;; Creates a new primitive function `name' with parameters args and
- ;; @body. The body can access to the local environment through the
- ;; variable *ENVIRONMENT*.
- `(push (list ',name (lambda ,args (block ,name ,@body)))
- *builtins*))
-
-(defmacro define-builtin (name args &body body)
- `(progn
- (define-raw-builtin ,name ,args
- (let ,(mapcar (lambda (arg) `(,arg (ls-compile ,arg))) args)
- ,@body))))
-
-;;; DECLS is a list of (JSVARNAME TYPE LISPFORM) declarations.
-(defmacro type-check (decls &body body)
- `(js!selfcall
- ,@(mapcar (lambda (decl)
- `(code "var " ,(first decl) " = " ,(third decl) ";" *newline*))
- decls)
- ,@(mapcar (lambda (decl)
- `(code "if (typeof " ,(first decl) " != '" ,(second decl) "')" *newline*
- (indent "throw 'The value ' + "
- ,(first decl)
- " + ' is not a type "
- ,(second decl)
- ".';"
- *newline*)))
- decls)
- (code "return " (progn ,@body) ";" *newline*)))
-
-;;; VARIABLE-ARITY compiles variable arity operations. ARGS stands for
-;;; a variable which holds a list of forms. It will compile them and
-;;; store the result in some Javascript variables. BODY is evaluated
-;;; with ARGS bound to the list of these variables to generate the
-;;; code which performs the transformation on these variables.
-
-(defun variable-arity-call (args function)
- (unless (consp args)
- (error "ARGS must be a non-empty list"))
- (let ((counter 0)
- (fargs '())
- (prelude ""))
- (dolist (x args)
- (if (numberp x)
- (push (integer-to-string x) fargs)
- (let ((v (code "x" (incf counter))))
- (push v fargs)
- (concatf prelude
- (code "var " v " = " (ls-compile x) ";" *newline*
- "if (typeof " v " !== 'number') throw 'Not a number!';"
- *newline*)))))
- (js!selfcall prelude (funcall function (reverse fargs)))))
-
-
-(defmacro variable-arity (args &body body)
- (unless (symbolp args)
- (error "Bad usage of VARIABLE-ARITY, you must pass a symbol"))
- `(variable-arity-call ,args
- (lambda (,args)
- (code "return " ,@body ";" *newline*))))
-
-(defun num-op-num (x op y)
- (type-check (("x" "number" x) ("y" "number" y))
- (code "x" op "y")))
-
-(define-raw-builtin + (&rest numbers)
- (if (null numbers)
- "0"
- (variable-arity numbers
- (join numbers "+"))))
-
-(define-raw-builtin - (x &rest others)
- (let ((args (cons x others)))
- (variable-arity args
- (if (null others)
- (concat "-" (car args))
- (join args "-")))))
-
-(define-raw-builtin * (&rest numbers)
- (if (null numbers)
- "1"
- (variable-arity numbers
- (join numbers "*"))))
-
-(define-raw-builtin / (x &rest others)
- (let ((args (cons x others)))
- (variable-arity args
- (if (null others)
- (concat "1 /" (car args))
- (join args "/")))))
-
-(define-builtin mod (x y) (num-op-num x "%" y))
-
-
-(defun comparison-conjuntion (vars op)
- (cond
- ((null (cdr vars))
- "true")
- ((null (cddr vars))
- (concat (car vars) op (cadr vars)))
- (t
- (concat (car vars) op (cadr vars)
- " && "
- (comparison-conjuntion (cdr vars) op)))))
-
-(defmacro define-builtin-comparison (op sym)
- `(define-raw-builtin ,op (x &rest args)
- (let ((args (cons x args)))
- (variable-arity args
- (js!bool (comparison-conjuntion args ,sym))))))
-
-(define-builtin-comparison > ">")
-(define-builtin-comparison < "<")
-(define-builtin-comparison >= ">=")
-(define-builtin-comparison <= "<=")
-(define-builtin-comparison = "==")
-
-(define-builtin numberp (x)
- (js!bool (code "(typeof (" x ") == \"number\")")))
-
-(define-builtin floor (x)
- (type-check (("x" "number" x))
- "Math.floor(x)"))
-
-(define-builtin cons (x y)
- (code "({car: " x ", cdr: " y "})"))
-
-(define-builtin consp (x)
- (js!bool
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return (typeof tmp == 'object' && 'car' in tmp);" *newline*)))
-
-(define-builtin car (x)
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return tmp === " (ls-compile nil)
- "? " (ls-compile nil)
- ": tmp.car;" *newline*))
-
-(define-builtin cdr (x)
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return tmp === " (ls-compile nil) "? "
- (ls-compile nil)
- ": tmp.cdr;" *newline*))
-
-(define-builtin rplaca (x new)
- (type-check (("x" "object" x))
- (code "(x.car = " new ", x)")))
-
-(define-builtin rplacd (x new)
- (type-check (("x" "object" x))
- (code "(x.cdr = " new ", x)")))
-
-(define-builtin symbolp (x)
- (js!bool
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return (typeof tmp == 'object' && 'name' in tmp);" *newline*)))
-
-(define-builtin make-symbol (name)
- (type-check (("name" "string" name))
- "({name: name})"))
-
-(define-builtin symbol-name (x)
- (code "(" x ").name"))
-
-(define-builtin set (symbol value)
- (code "(" symbol ").value = " value))
-
-(define-builtin fset (symbol value)
- (code "(" symbol ").fvalue = " value))
-
-(define-builtin boundp (x)
- (js!bool (code "(" x ".value !== undefined)")))
-
-(define-builtin symbol-value (x)
- (js!selfcall
- "var symbol = " x ";" *newline*
- "var value = symbol.value;" *newline*
- "if (value === undefined) throw \"Variable `\" + symbol.name + \"' is unbound.\";" *newline*
- "return value;" *newline*))
-
-(define-builtin symbol-function (x)
- (js!selfcall
- "var symbol = " x ";" *newline*
- "var func = symbol.fvalue;" *newline*
- "if (func === undefined) throw \"Function `\" + symbol.name + \"' is undefined.\";" *newline*
- "return func;" *newline*))
-
-(define-builtin symbol-plist (x)
- (code "((" x ").plist || " (ls-compile nil) ")"))
-
-(define-builtin lambda-code (x)
- (code "(" x ").toString()"))
-
-(define-builtin eq (x y) (js!bool (code "(" x " === " y ")")))
-(define-builtin equal (x y) (js!bool (code "(" x " == " y ")")))
-
-(define-builtin char-to-string (x)
- (type-check (("x" "number" x))
- "String.fromCharCode(x)"))
-
-(define-builtin stringp (x)
- (js!bool (code "(typeof(" x ") == \"string\")")))
-
-(define-builtin string-upcase (x)
- (type-check (("x" "string" x))
- "x.toUpperCase()"))
-
-(define-builtin string-length (x)
- (type-check (("x" "string" x))
- "x.length"))
-
-(define-raw-builtin slice (string a &optional b)
- (js!selfcall
- "var str = " (ls-compile string) ";" *newline*
- "var a = " (ls-compile a) ";" *newline*
- "var b;" *newline*
- (when b (code "b = " (ls-compile b) ";" *newline*))
- "return str.slice(a,b);" *newline*))
-
-(define-builtin char (string index)
- (type-check (("string" "string" string)
- ("index" "number" index))
- "string.charCodeAt(index)"))
-
-(define-builtin concat-two (string1 string2)
- (type-check (("string1" "string" string1)
- ("string2" "string" string2))
- "string1.concat(string2)"))
-
-(define-raw-builtin funcall (func &rest args)
- (code "(" (ls-compile func) ")("
- (join (cons (if *multiple-value-p* "values" "pv")
- (mapcar #'ls-compile args))
- ", ")
- ")"))
-
-(define-raw-builtin apply (func &rest args)
- (if (null args)
- (code "(" (ls-compile func) ")()")
- (let ((args (butlast args))
- (last (car (last args))))
- (js!selfcall
- "var f = " (ls-compile func) ";" *newline*
- "var args = [" (join (cons (if *multiple-value-p* "values" "pv")
- (mapcar #'ls-compile args))
- ", ")
- "];" *newline*
- "var tail = (" (ls-compile last) ");" *newline*
- "while (tail != " (ls-compile nil) "){" *newline*
- " args.push(tail.car);" *newline*
- " tail = tail.cdr;" *newline*
- "}" *newline*
- "return f.apply(this, args);" *newline*))))
-
-(define-builtin js-eval (string)
- (type-check (("string" "string" string))
- (if *multiple-value-p*
- (js!selfcall
- "var v = eval.apply(window, [string]);" *newline*
- "if (typeof v !== 'object' || !('multiple-value' in v)){" *newline*
- (indent "v = [v];" *newline*
- "v['multiple-value'] = true;" *newline*)
- "}" *newline*
- "return values.apply(this, v);" *newline*)
- "eval.apply(window, [string])")))
-
-(define-builtin error (string)
- (js!selfcall "throw " string ";" *newline*))
-
-(define-builtin new () "{}")
-
-(define-builtin objectp (x)
- (js!bool (code "(typeof (" x ") === 'object')")))
-
-(define-builtin oget (object key)
- (js!selfcall
- "var tmp = " "(" object ")[" key "];" *newline*
- "return tmp == undefined? " (ls-compile nil) ": tmp ;" *newline*))
-
-(define-builtin oset (object key value)
- (code "((" object ")[" key "] = " value ")"))
-
-(define-builtin in (key object)
- (js!bool (code "((" key ") in (" object "))")))
-
-(define-builtin functionp (x)
- (js!bool (code "(typeof " x " == 'function')")))
-
-(define-builtin write-string (x)
- (type-check (("x" "string" x))
- "lisp.write(x)"))
-
-(define-builtin make-array (n)
- (js!selfcall
- "var r = [];" *newline*
- "for (var i = 0; i < " n "; i++)" *newline*
- (indent "r.push(" (ls-compile nil) ");" *newline*)
- "return r;" *newline*))
-
-(define-builtin arrayp (x)
- (js!bool
- (js!selfcall
- "var x = " x ";" *newline*
- "return typeof x === 'object' && 'length' in x;")))
-
-(define-builtin aref (array n)
- (js!selfcall
- "var x = " "(" array ")[" n "];" *newline*
- "if (x === undefined) throw 'Out of range';" *newline*
- "return x;" *newline*))
-
-(define-builtin aset (array n value)
- (js!selfcall
- "var x = " array ";" *newline*
- "var i = " n ";" *newline*
- "if (i < 0 || i >= x.length) throw 'Out of range';" *newline*
- "return x[i] = " value ";" *newline*))
-
-(define-builtin get-unix-time ()
- (code "(Math.round(new Date() / 1000))"))
-
-(define-builtin values-array (array)
- (if *multiple-value-p*
- (code "values.apply(this, " array ")")
- (code "pv.apply(this, " array ")")))
-
-(define-raw-builtin values (&rest args)
- (if *multiple-value-p*
- (code "values(" (join (mapcar #'ls-compile args) ", ") ")")
- (code "pv(" (join (mapcar #'ls-compile args) ", ") ")")))
-
-(defun macro (x)
- (and (symbolp x)
- (let ((b (lookup-in-lexenv x *environment* 'function)))
- (and (eq (binding-type b) 'macro)
- b))))
-
-(defun ls-macroexpand-1 (form)
- (let ((macro-binding (macro (car form))))
- (if macro-binding
- (let ((expander (binding-value macro-binding)))
- (when (listp expander)
- (let ((compiled (eval expander)))
- ;; The list representation are useful while
- ;; bootstrapping, as we can dump the definition of the
- ;; macros easily, but they are slow because we have to
- ;; evaluate them and compile them now and again. So, let
- ;; us replace the list representation version of the
- ;; function with the compiled one.
- ;;
- #+ecmalisp (set-binding-value macro-binding compiled)
- (setq expander compiled)))
- (apply expander (cdr form)))
- form)))
-
-(defun compile-funcall (function args)
- (let* ((values-funcs (if *multiple-value-p* "values" "pv"))
- (arglist (concat "(" (join (cons values-funcs (mapcar #'ls-compile args)) ", ") ")")))
- (cond
- ((translate-function function)
- (concat (translate-function function) arglist))
- ((and (symbolp function)
- #+ecmalisp (eq (symbol-package function) (find-package "COMMON-LISP"))
- #+common-lisp t)
- (code (ls-compile `',function) ".fvalue" arglist))
- (t
- (code (ls-compile `#',function) arglist)))))
-
-(defun ls-compile-block (sexps &optional return-last-p)
- (if return-last-p
- (code (ls-compile-block (butlast sexps))
- "return " (ls-compile (car (last sexps)) *multiple-value-p*) ";")
- (join-trailing
- (remove-if #'null-or-empty-p (mapcar #'ls-compile sexps))
- (concat ";" *newline*))))
-
-(defun ls-compile (sexp &optional multiple-value-p)
- (let ((*multiple-value-p* multiple-value-p))
- (cond
- ((symbolp sexp)
- (let ((b (lookup-in-lexenv sexp *environment* 'variable)))
- (cond
- ((and b (not (member 'special (binding-declarations b))))
- (binding-value b))
- ((or (keywordp sexp)
- (member 'constant (binding-declarations b)))
- (code (ls-compile `',sexp) ".value"))
- (t
- (ls-compile `(symbol-value ',sexp))))))
- ((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (code "\"" (escape-string sexp) "\""))
- ((arrayp sexp) (literal sexp))
- ((listp sexp)
- (let ((name (car sexp))
- (args (cdr sexp)))
- (cond
- ;; Special forms
- ((assoc name *compilations*)
- (let ((comp (second (assoc name *compilations*))))
- (apply comp args)))
- ;; Built-in functions
- ((and (assoc name *builtins*)
- (not (claimp name 'function 'notinline)))
- (let ((comp (second (assoc name *builtins*))))
- (apply comp args)))
- (t
- (if (macro name)
- (ls-compile (ls-macroexpand-1 sexp) multiple-value-p)
- (compile-funcall name args))))))
- (t
- (error "How should I compile this?")))))
-
-(defun ls-compile-toplevel (sexp &optional multiple-value-p)
- (let ((*toplevel-compilations* nil))
- (cond
- ((and (consp sexp) (eq (car sexp) 'progn))
- (let ((subs (mapcar (lambda (s)
- (ls-compile-toplevel s t))
- (cdr sexp))))
- (join (remove-if #'null-or-empty-p subs))))
- (t
- (let ((code (ls-compile sexp multiple-value-p)))
- (code (join-trailing (get-toplevel-compilations)
- (code ";" *newline*))
- (when code
- (code code ";" *newline*))))))))
-
-
-;;; Once we have the compiler, we define the runtime environment and
-;;; interactive development (eval), which works calling the compiler
-;;; and evaluating the Javascript result globally.
-
-#+ecmalisp
-(progn
- (defun eval (x)
- (js-eval (ls-compile-toplevel x t)))
-
- (export '(&rest &key &optional &body * *gensym-counter* *package* +
- - / 1+ 1- < <= = = > >= and append apply aref arrayp assoc
- atom block boundp boundp butlast caar cadddr caddr cadr
- car car case catch cdar cdddr cddr cdr cdr char char-code
- char= code-char cond cons consp constantly copy-list decf
- declaim defconstant defparameter defun defmacro defvar
- digit-char digit-char-p disassemble do do* documentation
- dolist dotimes ecase eq eql equal error eval every export
- fdefinition find-package find-symbol first flet fourth
- fset funcall function functionp gensym get-universal-time
- go identity if in-package incf integerp integerp intern
- keywordp labels lambda last length let let*
- list-all-packages list listp make-array make-package
- make-symbol mapcar member minusp mod multiple-value-bind
- multiple-value-call multiple-value-list
- multiple-value-prog1 nil not nth nthcdr null numberp or
- package-name package-use-list packagep parse-integer plusp
- prin1-to-string print proclaim prog1 prog2 progn psetq
- push quote remove remove-if remove-if-not return
- return-from revappend reverse rplaca rplacd second set setf
- setq some string-upcase string string= stringp subseq
- symbol-function symbol-name symbol-package symbol-plist
- symbol-value symbolp t tagbody third throw truncate unless
- unwind-protect values values-list variable warn when
- write-line write-string zerop))
-
- (setq *package* *user-package*)
-
- (js-eval "var lisp")
- (js-vset "lisp" (new))
- (js-vset "lisp.read" #'ls-read-from-string)
- (js-vset "lisp.print" #'prin1-to-string)
- (js-vset "lisp.eval" #'eval)
- (js-vset "lisp.compile" (lambda (s) (ls-compile-toplevel s t)))
- (js-vset "lisp.evalString" (lambda (str) (eval (ls-read-from-string str))))
- (js-vset "lisp.compileString" (lambda (str) (ls-compile-toplevel (ls-read-from-string str) t)))
-
- ;; Set the initial global environment to be equal to the host global
- ;; environment at this point of the compilation.
- (eval-when-compile
- (toplevel-compilation
- (ls-compile `(setq *environment* ',*environment*))))
-
- (eval-when-compile
- (toplevel-compilation
- (ls-compile
- `(progn
- ,@(mapcar (lambda (s) `(%intern-symbol (js-vref ,(cdr s))))
- *literal-symbols*)
- (setq *literal-symbols* ',*literal-symbols*)
- (setq *variable-counter* ,*variable-counter*)
- (setq *gensym-counter* ,*gensym-counter*)
- (setq *block-counter* ,*block-counter*)))))
-
- (eval-when-compile
- (toplevel-compilation
- (ls-compile
- `(setq *literal-counter* ,*literal-counter*)))))
-
-
-;;; Finally, we provide a couple of functions to easily bootstrap
-;;; this. It just calls the compiler with this file as input.
-
-#+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)
- (let ((*compiling-file* t))
- (with-open-file (out output :direction :output :if-exists :supersede)
- (write-string (read-whole-file "prelude.js") out)
- (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-string compilation out))))))
-
- (defun bootstrap ()
- (setq *environment* (make-lexenv))
- (setq *literal-symbols* nil)
- (setq *variable-counter* 0
- *gensym-counter* 0
- *literal-counter* 0
- *block-counter* 0)
- (ls-compile-file "ecmalisp.lisp" "ecmalisp.js")))
+ with eof-mark = (gensym)
+ for x = (ls-read in nil eof-mark)
+ until (eq x eof-mark)
+ for compilation = (ls-compile-toplevel x)
+ when (plusp (length compilation))
+ do (write-string compilation out)))))
+
+(defun bootstrap ()
+ (setq *environment* (make-lexenv))
+ (setq *literal-symbols* nil)
+ (setq *variable-counter* 0
+ *gensym-counter* 0
+ *literal-counter* 0
+ *block-counter* 0)
+ (with-open-file (out "ecmalisp.js" :direction :output :if-exists :supersede)
+ (write-string (read-whole-file (source-pathname "prelude.js")) out)
+ (dolist (input *source*)
+ (when (member (cadr input) '(:target :both))
+ (ls-compile-file (source-pathname (car input) :type "lisp") out)))))
projects / jscl.git / blobdiff