#+ecmalisp
(progn
-
- 'defmacro
(eval-when-compile
(%compile-defmacro 'defmacro
- '(lambda (name args &rest body)
- `(progn
- (eval-when-compile
- (%compile-defmacro ',name
- '(lambda ,(mapcar (lambda (x)
- (if (eq x '&body)
- '&rest
- x))
+ '(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)))
- ',name))))
+ ,@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)
+ (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
- (eval-when-compile
- (%compile-defvar ',name))
(setq ,name ,value)
+ ,@(when (stringp docstring) `((oset ',name "vardoc" ,docstring)))
',name))
- (defmacro named-lambda (name args &body body)
+ (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 &body body)
+ (defmacro defun (name args &rest body)
`(progn
- (eval-when-compile
- (%compile-defun ',name))
- (fsetq ,name (named-lambda ,(symbol-name name) ,args
- (block ,name ,@body)))
+ (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))
- (defvar *package* (new))
-
- (defvar nil 'nil)
- (defvar t 't)
-
(defun null (x)
(eq x nil))
(defmacro while (condition &body body)
`(block nil (%while ,condition ,@body)))
- (defun internp (name)
- (in name *package*))
-
- (defun intern (name)
- (if (internp name)
- (oget *package* name)
- (oset *package* name (make-symbol name))))
-
- (defun find-symbol (name)
- (oget *package* name))
-
(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 * (x y) (* x y))
(defun / (x y) (/ x y))
(defun 1+ (x) (+ x 1))
(defun cons (x y ) (cons x y))
(defun consp (x) (consp x))
- (defun car (x) (car 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 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)
(defmacro push (x place)
`(setq ,place (cons ,x ,place)))
- (defmacro when (condition &body body)
- `(if ,condition (progn ,@body) nil))
-
- (defmacro unless (condition &body body)
- `(if ,condition nil (progn ,@body)))
-
(defmacro dolist (iter &body body)
(let ((var (first iter))
(g!list (gensym)))
,value)))
(defmacro prog2 (form1 result &body body)
- `(prog1 (progn ,form1 ,result) ,@body))
-
- )
+ `(prog1 (progn ,form1 ,result) ,@body)))
;;; This couple of helper functions will be defined in both Common
;;; 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
(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))
l))
(defun length (seq)
- (if (stringp seq)
- (string-length seq)
- (list-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))
- (defun mapcar (func list)
- (if (null list)
- '()
- (cons (funcall func (car list))
- (mapcar func (cdr list)))))
+ (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))
(- x #\0)
nil))
+ (defun digit-char (weight)
+ (and (<= 0 weight 9)
+ (char "0123456789" weight)))
+
(defun subseq (seq a &optional b)
(cond
((stringp seq)
(t
(error "Unsupported argument."))))
- (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 some (function seq)
(cond
((stringp seq)
(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)))
+ (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 code here.
+ `(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 &optional 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" (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
(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)))
+ (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
(defun mapconcat (func list)
(join (mapcar func list)))
-;;; Like CONCAT, 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.
+(defun vector-to-list (vector)
+ (let ((list nil)
+ (size (length vector)))
+ (dotimes (i size (reverse list))
+ (push (aref vector i) list))))
-#+ecmalisp
-(defun indent (&rest string)
- (let ((input (join 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)))
+(defun list-to-vector (list)
+ (let ((v (make-array (length list)))
+ (i 0))
+ (dolist (x list v)
+ (aset v i x)
+ (incf i))))
-#+common-lisp
-(defun indent (&rest string)
- (with-output-to-string (*standard-output*)
- (with-input-from-string (input (join string))
- (loop
- for line = (read-line input nil)
- while line
- do (write-string " ")
- do (write-line line)))))
+#+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
(while (not (zerop x))
(push (mod x 10) digits)
(setq x (truncate x 10)))
- (join (mapcar (lambda (d) (string (char "0123456789" d)))
- digits))))))
-
-
-;;; Wrap X with a Javascript code to convert the result from
-;;; Javascript generalized booleans to T or NIL.
-(defun js!bool (x)
- (concat "(" 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)
- `(concat "(function(){" *newline* (indent ,@body) "})()"))
+ (mapconcat (lambda (x) (string (digit-char x)))
+ digits)))))
;;; Printer
(progn
(defun prin1-to-string (form)
(cond
- ((symbolp form) (symbol-name form))
+ ((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)
(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))
(defun %read-char (stream)
(and (< (cdr stream) (length (car stream)))
(prog1 (char (car stream) (cdr stream))
- (setcdr stream (1+ (cdr stream))))))
+ (rplacd stream (1+ (cdr stream))))))
(defun whitespacep (ch)
(or (char= ch #\space) (char= ch #\newline) (char= ch #\tab)))
(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))
(t
(error "Unknown reader form.")))))))
-(defvar *eof* (make-symbol "EOF"))
+;;; 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
- ((null ch)
+ ((or (null ch) (char= ch #\)))
*eof*)
((char= ch #\()
(%read-char stream)
(read-sharp stream))
(t
(let ((string (read-until stream #'terminalp)))
- (if (every #'digit-char-p string)
- (parse-integer string)
- (intern (string-upcase string))))))))
+ (or (values (!parse-integer string nil))
+ (read-symbol string)))))))
(defun ls-read-from-string (string)
(ls-read (make-string-stream string)))
;;; too. The respective real functions are defined in the target (see
;;; the beginning of this file) as well as some primitive functions.
-(defvar *compilation-unit-checks* '())
+(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))
+ (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 translation declared)
- (list name type translation declared))
+(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-translation (b) (third b))
-(defun binding-declared (b)
- (and b (fourth b)))
-(defun mark-binding-as-declared (b)
- (setcar (cdddr b) t))
+(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 push-to-lexenv (binding lexenv namespace)
(ecase namespace
- (variable
- (setcar lexenv (cons binding (car lexenv))))
- (function
- (setcar (cdr lexenv) (cons binding (cadr lexenv))))
- (block
- (setcar (cddr lexenv) (cons binding (caddr lexenv))))
- (gotag
- (setcar (cdddr lexenv) (cons binding (cadddr lexenv))))))
+ (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)))
(defvar *environment* (make-lexenv))
-(defun clear-undeclared-global-bindings ()
- (setq *environment*
- (mapcar (lambda (namespace)
- (remove-if-not #'binding-declared namespace))
- *environment*)))
-
-
(defvar *variable-counter* 0)
(defun gvarname (symbol)
- (concat "v" (integer-to-string (incf *variable-counter*))))
-
-(defun lookup-variable (symbol env)
- (or (lookup-in-lexenv symbol env 'variable)
- (lookup-in-lexenv symbol *environment* 'variable)
- (let ((name (symbol-name symbol))
- (binding (make-binding symbol 'special-variable (gvarname symbol) nil)))
- (push-to-lexenv binding *environment* 'variable)
- (push (lambda ()
- (let ((b (lookup-in-lexenv symbol *environment* 'variable)))
- (unless (binding-declared b)
- (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)
- (let ((new (copy-lexenv env)))
+ (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 'lexical-variable (gvarname symbol) t)))
+ (let ((b (make-binding symbol 'variable (gvarname symbol))))
(push-to-lexenv b new 'variable)))))
-(defvar *function-counter* 0)
-(defun lookup-function (symbol env)
- (or (lookup-in-lexenv symbol env 'function)
- (lookup-in-lexenv symbol *environment* 'function)
- (let ((name (symbol-name symbol))
- (binding
- (make-binding symbol
- 'function
- (concat "f" (integer-to-string (incf *function-counter*)))
- nil)))
- (push-to-lexenv binding *environment* 'function)
- (push (lambda ()
- (let ((b (lookup-in-lexenv symbol *environment* 'function)))
- (unless (binding-declared b)
- (error (concat "Undefined function `" name "'")))))
- *compilation-unit-checks*)
- binding)))
-
-(defun lookup-function-translation (symbol env)
- (binding-translation (lookup-function symbol env)))
-
;;; Toplevel compilations
(defvar *toplevel-compilations* nil)
(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))))))
-(defun %compile-defvar (name)
- (let ((b (lookup-variable name *environment*)))
- (mark-binding-as-declared b)
- (toplevel-compilation (concat "var " (binding-translation b)))))
-
-(defun %compile-defun (name)
- (let ((b (lookup-function name *environment*)))
- (mark-binding-as-declared b)
- (toplevel-compilation (concat "var " (binding-translation b)))))
+#+ecmalisp
+(fset 'proclaim #'!proclaim)
-(defun %compile-defmacro (name lambda)
- (push-to-lexenv (make-binding name 'macro lambda t) *environment* 'function))
+;;; Special forms
(defvar *compilations* nil)
-(defun ls-compile-block (sexps env)
- (join-trailing
- (remove-if #'null
- (mapcar (lambda (x) (ls-compile x env)) sexps))
- (concat ";" *newline*)))
-
(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 ENV.
- `(push (list ',name (lambda (env ,@args) (block ,name ,@body)))
+ ;; variable *ENVIRONMENT*.
+ `(push (list ',name (lambda ,args (block ,name ,@body)))
*compilations*))
(define-compilation if (condition true false)
- (concat "("
- (ls-compile condition env) " !== " (ls-compile nil)
- " ? "
- (ls-compile true env)
- " : "
- (ls-compile false env)
- ")"))
+ (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))
+(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 (list-until-keyword (cdr (member '&optional 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 (list-until-keyword (cdr (member '&rest lambda-list)))))
+ (let ((rest (lambda-list-section '&rest lambda-list)))
(when (cdr rest)
(error "Bad lambda-list"))
(car rest)))
-(define-compilation lambda (lambda-list &rest body)
+(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
+ "var i;" *newline*
+ ;; 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*)))
+ (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))
- (rest-argument (lambda-list-rest-argument 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))
- (new-env (extend-local-env
- (append (ensure-list rest-argument)
- required-arguments
- optional-arguments)
- env)))
- (concat "(function ("
- (join (mapcar (lambda (x)
- (lookup-variable-translation x new-env))
- (append required-arguments optional-arguments))
- ",")
- "){" *newline*
- ;; Check number of arguments
- (indent
- (if required-arguments
- (concat "if (arguments.length < " (integer-to-string n-required-arguments)
- ") throw 'too few arguments';" *newline*)
- "")
- (if (not rest-argument)
- (concat "if (arguments.length > "
- (integer-to-string (+ n-required-arguments n-optional-arguments))
- ") throw 'too many arguments';" *newline*)
- "")
- ;; Optional arguments
- (if optional-arguments
- (concat "switch(arguments.length){" *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 (concat "case "
- (integer-to-string (+ idx n-required-arguments)) ":" *newline*
- (lookup-variable-translation (car arg) new-env)
- "="
- (ls-compile (cadr arg) new-env)
- ";" *newline*)
- cases)
- (incf idx)))
- (push (concat "default: break;" *newline*) cases)
- (join (reverse cases))))
- "}" *newline*)
- "")
- ;; &rest/&body argument
- (if rest-argument
- (let ((js!rest (lookup-variable-translation rest-argument new-env)))
- (concat "var " js!rest "= " (ls-compile nil) ";" *newline*
- "for (var i = arguments.length-1; i>="
- (integer-to-string (+ n-required-arguments n-optional-arguments))
- "; i--)" *newline*
- (indent js!rest " = "
- "{car: arguments[i], cdr: ") js!rest "};"
- *newline*))
- "")
- ;; Body
- (concat (ls-compile-block (butlast body) new-env)
- "return " (ls-compile (car (last body)) new-env) ";")) *newline*
- "})"))))
-
-(define-compilation fsetq (var val)
- (concat (lookup-function-translation var env)
- " = "
- (ls-compile val env)))
-
-(define-compilation setq (var val)
- (let ((b (lookup-variable var env)))
- (ecase (binding-type b)
- (lexical-variable (concat (binding-translation b) " = " (ls-compile val env)))
- (special-variable (ls-compile `(set ',var ,val) env)))))
+ (*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)
- (concat "(" var " = " (ls-compile val env) ")"))
+ (code "(" var " = " (ls-compile val) ")"))
;;; Literals
(defvar *literal-counter* 0)
(defun genlit ()
- (concat "l" (integer-to-string (incf *literal-counter*))))
+ (code "l" (incf *literal-counter*)))
(defun literal (sexp &optional recursive)
(cond
((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
+ ((stringp sexp) (code "\"" (escape-string sexp) "\""))
((symbolp sexp)
- #+common-lisp
(or (cdr (assoc sexp *literal-symbols*))
(let ((v (genlit))
- (s (concat "{name: \"" (escape-string (symbol-name sexp)) "\"}")))
+ (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 (concat "var " v " = " s))
- v))
- #+ecmalisp
- (let ((v (genlit))
- (s (ls-compile `(intern ,(symbol-name sexp)))))
- (toplevel-compilation (concat "var " v " = " s))
- v))
+ (toplevel-compilation (code "var " v " = " s))
+ v)))
((consp sexp)
- (let ((c (concat "{car: " (literal (car sexp) t) ", "
- "cdr: " (literal (cdr sexp) t) "}")))
+ (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 (concat "var " v " = " c))
- v))))))
+ (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 env) " !== " (ls-compile nil) "){" *newline*
- (indent (ls-compile-block body env))
+ "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))
- (ls-compile x env))
+ (compile-lambda (cadr x) (cddr x)))
((symbolp x)
- (lookup-function-translation x env))))
-
+ (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)
- (eval (cons 'progn body))
- nil)
+ (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 env)))
+ (ls-compile ,form)))
(define-compilation progn (&rest body)
- (js!selfcall
- (ls-compile-block (butlast body) env)
- "return " (ls-compile (car (last body)) env) ";" *newline*))
+ (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)))
- (let ((variables (mapcar #'first bindings))
- (values (mapcar #'second bindings)))
- (let ((new-env (extend-local-env variables env)))
- (concat "(function("
- (join (mapcar (lambda (x)
- (lookup-variable-translation x new-env))
- variables)
- ",")
- "){" *newline*
- (indent (ls-compile-block (butlast body) new-env)
- "return " (ls-compile (car (last body)) new-env)
- ";" *newline*)
- "})(" (join (mapcar (lambda (x) (ls-compile x env))
- values)
- ",")
- ")")))))
+ (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 (integer-to-string (incf *block-counter*))))
- (let ((b (make-binding name 'block tr t)))
- (js!selfcall
- "try {" *newline*
- (indent "return " (ls-compile `(progn ,@body)
- (extend-lexenv (list b) env 'block))
- ";" *newline*)
- "}" *newline*
- "catch (cf){" *newline*
- " if (cf.type == 'block' && cf.id == " tr ")" *newline*
- " return cf.value;" *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*))))
+ (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 env 'block)))
- (if b
- (js!selfcall
- "throw ({"
- "type: 'block', "
- "id: " (binding-translation b) ", "
- "value: " (ls-compile value env) ", "
- "message: 'Return from unknown block " (symbol-name name) ".'"
- "})")
- (error (concat "Unknown block `" (symbol-name name) "'.")))))
-
+ (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 env) ";" *newline*
+ "var id = " (ls-compile id) ";" *newline*
"try {" *newline*
- (indent "return " (ls-compile `(progn ,@body))
- ";" *newline*)
+ (indent (ls-compile-block body t)) *newline*
"}" *newline*
"catch (cf){" *newline*
" if (cf.type == 'catch' && cf.id == id)" *newline*
- " return cf.value;" *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 &optional value)
+(define-compilation throw (id value)
(js!selfcall
+ "var values = mv;" *newline*
"throw ({"
"type: 'catch', "
- "id: " (ls-compile id env) ", "
- "value: " (ls-compile value env) ", "
+ "id: " (ls-compile id) ", "
+ "values: " (ls-compile value t) ", "
"message: 'Throw uncatched.'"
"})"))
(defun go-tag-p (x)
(or (integerp x) (symbolp x)))
-(defun declare-tagbody-tags (env tbidx body)
+(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) t)))
+ (make-binding label 'gotag (list tbidx tagidx))))
(remove-if-not #'go-tag-p body))))
- (extend-lexenv bindings env 'gotag)))
+ (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) env)))
+ (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 (integer-to-string *tagbody-counter*)))
- (let ((env (declare-tagbody-tags env tbidx body))
+ (let ((tbidx *tagbody-counter*))
+ (let ((*environment* (declare-tagbody-tags tbidx body))
initag)
- (let ((b (lookup-in-lexenv (first body) env 'gotag)))
- (setq initag (second (binding-translation b))))
+ (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 ""))
- (concat "switch(tagbody_" tbidx "){" *newline*
- "case " initag ":" *newline*
- (dolist (form (cdr body) content)
- (concatf content
- (if (not (go-tag-p form))
- (indent (ls-compile form env) ";" *newline*)
- (let ((b (lookup-in-lexenv form env 'gotag)))
- (concat "case " (second (binding-translation b)) ":" *newline*)))))
- "default:" *newline*
- " break tbloop;" *newline*
- "}" *newline*)))
+ (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*
"return " (ls-compile nil) ";" *newline*))))
(define-compilation go (label)
- (let ((b (lookup-in-lexenv label env 'gotag))
+ (let ((b (lookup-in-lexenv label *environment* 'gotag))
(n (cond
((symbolp label) (symbol-name label))
((integerp label) (integer-to-string label)))))
- (if b
- (js!selfcall
- "throw ({"
- "type: 'tagbody', "
- "id: " (first (binding-translation b)) ", "
- "label: " (second (binding-translation b)) ", "
- "message: 'Attempt to GO to non-existing tag " n "'"
- "})" *newline*)
- (error (concat "Unknown tag `" n "'.")))))
-
+ (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 env) ";" *newline*)
+ (indent "ret = " (ls-compile form) ";" *newline*)
"} finally {" *newline*
- (indent (ls-compile-block clean-up env))
+ (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.
;;; 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)
- `(define-compilation ,name ,args
- (let ,(mapcar (lambda (arg) `(,arg (ls-compile ,arg env))) args)
- ,@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)
- `(concat "var " ,(first decl) " = " ,(third decl) ";" *newline*))
- decls)
+ `(code "var " ,(first decl) " = " ,(third decl) ";" *newline*))
+ decls)
,@(mapcar (lambda (decl)
- `(concat "if (typeof " ,(first decl) " != '" ,(second decl) "')" *newline*
- (indent "throw 'The value ' + "
- ,(first decl)
- " + ' is not a type "
- ,(second decl)
- ".';"
- *newline*)))
+ `(code "if (typeof " ,(first decl) " != '" ,(second decl) "')" *newline*
+ (indent "throw 'The value ' + "
+ ,(first decl)
+ " + ' is not a type "
+ ,(second decl)
+ ".';"
+ *newline*)))
decls)
- (concat "return " (progn ,@body) ";" *newline*)))
+ (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))
- (concat "x" op "y")))
-
-(define-builtin + (x y) (num-op-num x "+" y))
-(define-builtin - (x y) (num-op-num x "-" y))
-(define-builtin * (x y) (num-op-num x "*" y))
-(define-builtin / (x y) (num-op-num x "/" 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))
-(define-builtin < (x y) (js!bool (num-op-num x "<" y)))
-(define-builtin > (x y) (js!bool (num-op-num x ">" y)))
-(define-builtin = (x y) (js!bool (num-op-num x "==" y)))
-(define-builtin <= (x y) (js!bool (num-op-num x "<=" y)))
-(define-builtin >= (x y) (js!bool (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 (concat "(typeof (" x ") == \"number\")")))
+ (js!bool (code "(typeof (" x ") == \"number\")")))
(define-builtin floor (x)
(type-check (("x" "number" x))
"Math.floor(x)"))
(define-builtin cons (x y)
- (concat "({car: " x ", cdr: " y "})"))
+ (code "({car: " x ", cdr: " y "})"))
(define-builtin consp (x)
(js!bool
(ls-compile nil)
": tmp.cdr;" *newline*))
-(define-builtin setcar (x new)
+(define-builtin rplaca (x new)
(type-check (("x" "object" x))
- (concat "(x.car = " new ")")))
+ (code "(x.car = " new ", x)")))
-(define-builtin setcdr (x new)
+(define-builtin rplacd (x new)
(type-check (("x" "object" x))
- (concat "(x.cdr = " new ")")))
+ (code "(x.cdr = " new ", x)")))
(define-builtin symbolp (x)
(js!bool
"({name: name})"))
(define-builtin symbol-name (x)
- (concat "(" x ").name"))
+ (code "(" x ").name"))
(define-builtin set (symbol value)
- (concat "(" symbol ").value =" 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)
- (concat "(" x ").value"))
+ (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)
- (concat "(" x ").function"))
+ (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 eq (x y) (js!bool (concat "(" x " === " y ")")))
-(define-builtin equal (x y) (js!bool (concat "(" x " == " y ")")))
+(define-builtin lambda-code (x)
+ (code "(" x ").toString()"))
-(define-builtin string (x)
+(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 (concat "(typeof(" x ") == \"string\")")))
+ (js!bool (code "(typeof(" x ") == \"string\")")))
(define-builtin string-upcase (x)
(type-check (("x" "string" x))
(type-check (("x" "string" x))
"x.length"))
-(define-compilation slice (string a &optional b)
+(define-raw-builtin slice (string a &optional b)
(js!selfcall
- "var str = " (ls-compile string env) ";" *newline*
- "var a = " (ls-compile a env) ";" *newline*
+ "var str = " (ls-compile string) ";" *newline*
+ "var a = " (ls-compile a) ";" *newline*
"var b;" *newline*
- (if b
- (concat "b = " (ls-compile b env) ";" *newline*)
- "")
+ (when b (code "b = " (ls-compile b) ";" *newline*))
"return str.slice(a,b);" *newline*))
(define-builtin char (string index)
("string2" "string" string2))
"string1.concat(string2)"))
-(define-compilation funcall (func &rest args)
- (concat "(" (ls-compile func env) ")("
- (join (mapcar (lambda (x)
- (ls-compile x env))
- args)
- ", ")
- ")"))
+(define-raw-builtin funcall (func &rest args)
+ (code "(" (ls-compile func) ")("
+ (join (cons (if *multiple-value-p* "values" "pv")
+ (mapcar #'ls-compile args))
+ ", ")
+ ")"))
-(define-compilation apply (func &rest args)
+(define-raw-builtin apply (func &rest args)
(if (null args)
- (concat "(" (ls-compile func env) ")()")
+ (code "(" (ls-compile func) ")()")
(let ((args (butlast args))
(last (car (last args))))
(js!selfcall
- "var f = " (ls-compile func env) ";" *newline*
- "var args = [" (join (mapcar (lambda (x)
- (ls-compile x env))
- args)
+ "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 env) ");" *newline*
+ "var tail = (" (ls-compile last) ");" *newline*
"while (tail != " (ls-compile nil) "){" *newline*
" args.push(tail.car);" *newline*
" tail = tail.cdr;" *newline*
(define-builtin js-eval (string)
(type-check (("string" "string" string))
- "eval.apply(window, [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)
- (concat "((" object ")[" key "] = " value ")"))
+ (code "((" object ")[" key "] = " value ")"))
(define-builtin in (key object)
- (js!bool (concat "((" key ") in (" object "))")))
+ (js!bool (code "((" key ") in (" object "))")))
(define-builtin functionp (x)
- (js!bool (concat "(typeof " x " == 'function')")))
+ (js!bool (code "(typeof " x " == 'function')")))
(define-builtin write-string (x)
(type-check (("x" "string" x))
"lisp.write(x)"))
-(defun macrop (x)
- (and (symbolp x) (eq (binding-type (lookup-function x *environment*)) 'macro)))
+(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*))
-(defun ls-macroexpand-1 (form env)
- (if (macrop (car form))
- (let ((binding (lookup-function (car form) *environment*)))
- (if (eq (binding-type binding) 'macro)
- (apply (eval (binding-translation binding)) (cdr form))
- form))
- form))
+(define-builtin arrayp (x)
+ (js!bool
+ (js!selfcall
+ "var x = " x ";" *newline*
+ "return typeof x === 'object' && 'length' in x;")))
-(defun compile-funcall (function args env)
- (cond
- ((symbolp function)
- (concat (lookup-function-translation function env)
- "("
- (join (mapcar (lambda (x) (ls-compile x env)) args)
- ", ")
- ")"))
- ((and (listp function) (eq (car function) 'lambda))
- (concat "(" (ls-compile function env) ")("
- (join (mapcar (lambda (x) (ls-compile x env)) args)
- ", ")
- ")"))
- (t
- (error (concat "Invalid function designator " (symbol-name function))))))
+(define-builtin aref (array n)
+ (js!selfcall
+ "var x = " "(" array ")[" n "];" *newline*
+ "if (x === undefined) throw 'Out of range';" *newline*
+ "return x;" *newline*))
-(defun ls-compile (sexp &optional (env (make-lexenv)))
- (cond
- ((symbolp sexp)
- (let ((b (lookup-variable sexp env)))
- (ecase (binding-type b)
- (lexical-variable
- (binding-translation b))
- (special-variable
- (ls-compile `(symbol-value ',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 (cdr sexp)))
- (if (macrop (car sexp))
- (ls-compile (ls-macroexpand-1 sexp env) env)
- (compile-funcall (car sexp) (cdr sexp) env))))))
-
-(defun ls-compile-toplevel (sexp)
- (setq *toplevel-compilations* nil)
- (cond
- ((and (consp sexp) (eq (car sexp) 'progn))
- (let ((subs (mapcar #'ls-compile-toplevel (cdr sexp))))
- (join (remove-if #'null-or-empty-p subs))))
- (t
- (let ((code (ls-compile sexp)))
- (prog1
- (concat (join-trailing (get-toplevel-compilations) (concat ";" *newline*))
- (if code
- (concat code ";" *newline*)
- ""))
- (setq *toplevel-compilations* nil))))))
+(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
#+ecmalisp
(progn
- (defmacro with-compilation-unit (&body body)
- `(prog1
- (progn
- (setq *compilation-unit-checks* nil)
- (clear-undeclared-global-bindings)
- ,@body)
- (dolist (check *compilation-unit-checks*)
- (funcall check))))
-
(defun eval (x)
- (let ((code
- (with-compilation-unit
- (ls-compile-toplevel x))))
- (js-eval code)))
+ (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" #'ls-compile-toplevel)
+ (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))))
+ (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)
- `(oset *package* ,(symbol-name (car s))
- (js-vref ,(cdr s))))
+ ,@(mapcar (lambda (s) `(%intern-symbol (js-vref ,(cdr s))))
*literal-symbols*)
- (setq *environment* ',*environment*)
+ (setq *literal-symbols* ',*literal-symbols*)
(setq *variable-counter* ,*variable-counter*)
- (setq *function-counter* ,*function-counter*)
(setq *gensym-counter* ,*gensym-counter*)
(setq *block-counter* ,*block-counter*)))))
(eval-when-compile
(toplevel-compilation
- (ls-compile `(setq *literal-counter* ,*literal-counter*)))))
+ (ls-compile
+ `(setq *literal-counter* ,*literal-counter*)))))
;;; Finally, we provide a couple of functions to easily bootstrap
seq)))
(defun ls-compile-file (filename output)
- (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-string compilation out))
- (dolist (check *compilation-unit-checks*)
- (funcall check))
- (setq *compilation-unit-checks* nil))))
+ (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
- *function-counter* 0
*literal-counter* 0
*block-counter* 0)
(ls-compile-file "ecmalisp.lisp" "ecmalisp.js")))
projects / jscl.git / blobdiff