(progn
(eval-when-compile
(%compile-defmacro 'defmacro
- '(lambda (name args &rest body)
- `(eval-when-compile
- (%compile-defmacro ',name
- '(lambda ,(mapcar (lambda (x)
- (if (eq x '&body)
- '&rest
- x))
- args)
- ,@body))))))
+ '(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
(declaim (constant nil t) (special t nil))
(setq nil 'nil)
+ (js-vset "nil" nil)
(setq t 't)
+ (defmacro lambda (args &body body)
+ `(function (lambda ,args ,@body)))
+
(defmacro when (condition &body body)
`(if ,condition (progn ,@body) nil))
`(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))
(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)
(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))
+
;; Packages
(defvar *package-list* nil)
;; This function is used internally to initialize the CL package
;; with the symbols built during bootstrap.
(defun %intern-symbol (symbol)
- (let ((symbols (%package-symbols *common-lisp-package*)))
- (oset symbol "package" *common-lisp-package*)
+ (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 package)
- (let ((package (find-package-or-fail package)))
- (let ((symbols (%package-symbols package)))
- (if (in name symbols)
- (cons (oget symbols name) t)
- (dolist (used (package-use-list package) (cons nil nil))
- (let ((exports (%package-external-symbols used)))
- (when (in name exports)
- (return-from %find-symbol
- (cons (oget exports name) t)))))))))
-
(defun find-symbol (name &optional (package *package*))
- (car (%find-symbol name 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)))
- (let ((result (%find-symbol name package)))
- (if (cdr result)
- (car result)
+ (multiple-value-bind (symbol foundp)
+ (find-symbol name package)
+ (if foundp
+ symbol
(let ((symbols (%package-symbols package)))
(oget symbols name)
(let ((symbol (make-symbol name)))
(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)))
(values-array (list-to-vector list)))
(defun values (&rest args)
- (values-list args))
-
- (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)))
+ (values-list args)))
;;; Like CONCAT, but prefix each line with four spaces. Two versions
(defun prin1-to-string (form)
(cond
((symbolp form)
- (if (cdr (%find-symbol (symbol-name form) *package*))
- (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))))
+ (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)
(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)))
(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)
(read-sharp stream))
(t
(let ((string (read-until stream #'terminalp)))
- (if (every #'digit-char-p string)
- (parse-integer string)
- (read-symbol 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.
-;;; If the special variable `*multiple-value-p*' is NON-NIL, then the
-;;; compilation of the current form is allowed to return multiple
-;;; values, using the VALUES variable.
+;;; 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)
-(defvar *compilation-unit-checks* '())
(defun make-binding (name type value &optional declarations)
(list name type value declarations))
(defun binding-declarations (b) (fourth b))
(defun set-binding-value (b value)
- (setcar (cddr b) value))
+ (rplaca (cddr b) value))
(defun set-binding-declarations (b value)
- (setcar (cdddr b) value))
+ (rplaca (cdddr b) value))
(defun push-binding-declaration (decl b)
(set-binding-declarations b (cons decl (binding-declarations b))))
(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)))
(defun extend-local-env (args)
(let ((new (copy-lexenv *environment*)))
(dolist (symbol args new)
- (let ((b (make-binding symbol 'lexical-variable (gvarname symbol))))
+ (let ((b (make-binding symbol 'variable (gvarname symbol))))
(push-to-lexenv b new 'variable)))))
;;; Toplevel compilations
(defun %compile-defmacro (name lambda)
(toplevel-compilation (ls-compile `',name))
- (push-to-lexenv (make-binding name 'macro lambda) *environment* 'function))
+ (push-to-lexenv (make-binding name 'macro lambda) *environment* 'function)
+ name)
(defun global-binding (name type namespace)
(or (lookup-in-lexenv name *environment* namespace)
(concat "checkArgsAtMost(arguments, " (integer-to-string max) ");" *newline*)
"")))))
-(define-compilation lambda (lambda-list &rest body)
+(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))
(defun setq-pair (var val)
(let ((b (lookup-in-lexenv var *environment* 'variable)))
- (if (eq (binding-type b) 'lexical-variable)
+ (if (and (eq (binding-type b) 'variable)
+ (not (member 'special (binding-declarations b)))
+ (not (member 'constant (binding-declarations b))))
(concat (binding-value b) " = " (ls-compile val))
(ls-compile `(set ',var ,val)))))
((symbolp sexp)
(or (cdr (assoc sexp *literal-symbols*))
(let ((v (genlit))
- (s #+common-lisp (concat "{name: \"" (escape-string (symbol-name sexp)) "\"}")
- #+ecmalisp
- (let ((package (symbol-package sexp)))
- (if (null package)
- (concat "{name: \"" (escape-string (symbol-name sexp)) "\"}")
- (ls-compile `(intern ,(symbol-name sexp) ,(package-name package)))))))
+ (s #+common-lisp
+ (let ((package (symbol-package sexp)))
+ (if (eq package (find-package "KEYWORD"))
+ (concat "{name: \"" (escape-string (symbol-name sexp))
+ "\", 'package': '" (package-name package) "'}")
+ (concat "{name: \"" (escape-string (symbol-name sexp)) "\"}")))
+ #+ecmalisp
+ (let ((package (symbol-package sexp)))
+ (if (null package)
+ (concat "{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)))
(define-compilation function (x)
(cond
((and (listp x) (eq (car x) 'lambda))
- (ls-compile x))
+ (compile-lambda (cadr x) (cddr x)))
((symbolp x)
(ls-compile `(symbol-function ',x)))))
+(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
;;; Return the code to initialize BINDING, and push it extending the
-;;; current lexical environment if the variable is special.
+;;; current lexical environment if the variable is not special.
(defun let*-initialize-value (binding)
(let ((var (first binding))
(value (second binding)))
(define-compilation block (name &rest body)
(let* ((tr (integer-to-string (incf *block-counter*)))
- (b (make-binding name 'block tr))
- (*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*
- " return cf.value;" *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*)
- (js!selfcall
- (indent cbody)))))
+ (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)))
+ (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
+ (if multiple-value-p
+ (concat "var values = mv;" *newline*)
+ "")
"throw ({"
"type: 'block', "
"id: " (binding-value b) ", "
- "value: " (ls-compile value) ", "
+ "values: " (ls-compile value multiple-value-p) ", "
"message: 'Return from unknown block " (symbol-name name) ".'"
"})")))
(js!selfcall
"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 value)
(js!selfcall
+ "var values = mv;" *newline*
"throw ({"
"type: 'catch', "
"id: " (ls-compile id) ", "
- "value: " (ls-compile value) ", "
+ "values: " (ls-compile value t) ", "
"message: 'Throw uncatched.'"
"})"))
"return args;" *newline*))
-#+common-lisp
-(progn
-
- )
-
;;; A little backquote implementation without optimizations of any
;;; kind for ecmalisp.
(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 ")")))
+ (concat "(x.car = " new ", x)")))
-(define-builtin setcdr (x new)
+(define-builtin rplacd (x new)
(type-check (("x" "object" x))
- (concat "(x.cdr = " new ")")))
+ (concat "(x.cdr = " new ", x)")))
(define-builtin symbolp (x)
(js!bool
boundp butlast caar cadddr caddr cadr car car case catch cdar cdddr
cddr cdr cdr char char-code char= code-char cond cons consp copy-list
decf declaim defparameter defun defmacro defvar digit-char-p
- disassemble documentation dolist dotimes ecase eq eql equal error eval
- every export fdefinition find-package find-symbol first fourth fset
- funcall function functionp gensym get-universal-time go identity if
- in-package incf integerp integerp intern keywordp lambda last length
- let let* list-all-packages list listp make-array make-package
- make-symbol mapcar member minusp mod multiple-value-bind
+ disassemble do do* documentation dolist dotimes ecase eq eql equal
+ error eval every export fdefinition find-package find-symbol first
+ fourth fset funcall function functionp gensym get-universal-time go
+ identity if in-package incf integerp integerp intern keywordp 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
- plusp prin1-to-string print proclaim prog1 prog2 progn psetq push
- quote remove remove-if remove-if-not return return-from revappend
- reverse second set 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
+ 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 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*)
seq)))
(defun ls-compile-file (filename output)
- (setq *compilation-unit-checks* nil)
- (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))
- (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))