;;; language to the compiler to be able to run.
#+ecmalisp
-(js-eval "function pv (x) { return x; }")
+(js-eval "function pv (x) { return x ; }")
+
+#+ecmalisp
+(js-eval "function mv(){ var r = []; r['multiple-value'] = true; for (var i=0; i<arguments.length; i++) r.push(arguments[i]); return r; }")
+
+;;; NOTE: Define VALUES to be MV for toplevel forms. It is because
+;;; `eval' compiles the forms and execute the Javascript code at
+;;; toplevel with `js-eval', so it is necessary to return multiple
+;;; values from the eval function.
#+ecmalisp
-(js-eval "var values = pv;")
+(js-eval "var values = mv;")
#+ecmalisp
(progn
(values-array (list-to-vector list)))
(defun values (&rest args)
- (values-list args)))
+ (values-list args))
+
+ (defmacro multiple-value-bind (variables value-from &body body)
+ `(multiple-value-call (lambda (,@variables &rest ,(gensym))
+ ,@body)
+ ,value-from))
+
+ (defmacro multiple-value-list (value-from)
+ `(multiple-value-call #'list ,value-from)))
;;; Like CONCAT, but prefix each line with four spaces. Two versions
;;; 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.
(defvar *multiple-value-p* nil)
(defvar *compilation-unit-checks* '())
(error "Bad lambda-list"))
(car rest)))
-
(defun lambda-docstring-wrapper (docstring &rest strs)
(if docstring
(js!selfcall
"return func;" *newline*)
(join strs)))
-
(define-compilation lambda (lambda-list &rest body)
(let ((required-arguments (lambda-list-required-arguments lambda-list))
(optional-arguments (lambda-list-optional-arguments lambda-list))
*newline*))
"")
;; Body
- (ls-compile-block body t)) *newline*
+ (let ((*multiple-value-p* t)) (ls-compile-block body t)))
+ *newline*
"})"))))
store))
"}" *newline*)))
-
(define-compilation let* (bindings &rest body)
(let ((bindings (mapcar #'ensure-list bindings))
(*environment* (copy-lexenv *environment*)))
(js!selfcall
"try {" *newline*
(let ((*environment* (extend-lexenv (list b) *environment* 'block)))
- (indent "return " (ls-compile `(progn ,@body)) ";" *newline*))
+ (indent "return " (ls-compile `(progn ,@body) *multiple-value-p*) ";" *newline*))
"}" *newline*
"catch (cf){" *newline*
" if (cf.type == 'block' && cf.id == " tr ")" *newline*
"})")
(error (concat "Unknown block `" (symbol-name name) "'.")))))
-
(define-compilation catch (id &rest body)
(js!selfcall
"var id = " (ls-compile id) ";" *newline*
(let ((func (ls-compile func-form)))
(js!selfcall
"var args = [values];" *newline*
- "values = function(){" *newline*
- (indent "var result = [];" *newline*
- "result['multiple-value'] = true;" *newline*
- "for (var i=0; i<arguments.length; i++)" *newline*
- (indent "result.push(arguments[i]);" *newline*)
- "return result;" *newline*)
- "}" *newline*
+ "var values = mv;" *newline*
"var vs;" *newline*
(mapconcat (lambda (form)
(concat "vs = " (ls-compile form t) ";" *newline*
(define-raw-builtin funcall (func &rest args)
(concat "(" (ls-compile func) ")("
- (join (cons "pv" (mapcar #'ls-compile args))
+ (join (cons (if *multiple-value-p* "values" "pv")
+ (mapcar #'ls-compile args))
", ")
")"))
(last (car (last args))))
(js!selfcall
"var f = " (ls-compile func) ";" *newline*
- "var args = [" (join (cons "pv" (mapcar #'ls-compile args))
+ "var args = [" (join (cons (if *multiple-value-p* "values" "pv")
+ (mapcar #'ls-compile args))
", ")
"];" *newline*
"var tail = (" (ls-compile last) ");" *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*))
(concat "(Math.round(new Date() / 1000))"))
(define-builtin values-array (array)
- (concat "values.apply(this, " array ")"))
+ (if *multiple-value-p*
+ (concat "values.apply(this, " array ")")
+ (concat "pv.apply(this, " array ")")))
(define-raw-builtin values (&rest args)
- (concat "values(" (join (mapcar #'ls-compile args) ", ") ")"))
-
+ (if *multiple-value-p*
+ (concat "values(" (join (mapcar #'ls-compile args) ", ") ")")
+ (concat "pv(" (join (mapcar #'ls-compile args) ", ") ")")))
(defun macro (x)
(and (symbolp x)
(defun ls-compile-block (sexps &optional return-last-p)
(if return-last-p
(concat (ls-compile-block (butlast sexps))
- "return " (ls-compile (car (last sexps))) ";")
+ "return "(ls-compile (car (last sexps)) *multiple-value-p*) ";")
(join-trailing
(remove-if #'null-or-empty-p (mapcar #'ls-compile sexps))
(concat ";" *newline*))))
(t
(error "How should I compile this?")))))
-(defun ls-compile-toplevel (sexp)
+(defun ls-compile-toplevel (sexp &optional multiple-value-p)
(let ((*toplevel-compilations* nil))
(cond
((and (consp sexp) (eq (car sexp) 'progn))
- (let ((subs (mapcar #'ls-compile-toplevel (cdr sexp))))
+ (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)))
+ (let ((code (ls-compile sexp multiple-value-p)))
(concat (join-trailing (get-toplevel-compilations)
(concat ";" *newline*))
(if code
#+ecmalisp
(progn
- (defmacro with-compilation-unit (&body body)
- `(prog1
- (progn
- (setq *compilation-unit-checks* nil)
- ,@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 &optional &body * *gensym-counter* *package* + - / 1+ 1- < <= =
- = > >= and append apply aref arrayp aset 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 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-call 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 write-string zerop))
+ = > >= and append apply aref arrayp aset 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 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
+ multiple-value-call multiple-value-list 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 write-string zerop))
(setq *package* *user-package*)
(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.
projects / jscl.git / blobdiff