-;;; compiler.lisp ---
+;;; compiler.lisp ---
-;; copyright (C) 2012, 2013 David Vazquez
+;; Copyright (C) 2012, 2013 David Vazquez
;; Copyright (C) 2012 Raimon Grau
-;; This program is free software: you can redistribute it and/or
+;; JSCL is free software: you can redistribute it and/or
;; modify it under the terms of the GNU General Public License as
;; published by the Free Software Foundation, either version 3 of the
;; License, or (at your option) any later version.
;;
-;; This program is distributed in the hope that it will be useful, but
+;; JSCL is distributed in the hope that it will be useful, but
;; WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;; General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
-;; along with this program. If not, see <http://www.gnu.org/licenses/>.
+;; along with JSCL. If not, see <http://www.gnu.org/licenses/>.
;;;; Compiler
+(/debug "loading compiler.lisp!")
+
+(define-js-macro selfcall (&body body)
+ `(call (function () ,@body)))
+
+(define-js-macro bool (expr)
+ `(if ,expr ,(convert t) ,(convert nil)))
+
;;; Translate the Lisp code to Javascript. It will compile the special
;;; forms. Some primitive functions are compiled as special forms
;;; too. The respective real functions are defined in the target (see
;;; the beginning of this file) as well as some primitive functions.
-(defun code (&rest args)
- (mapconcat (lambda (arg)
- (cond
- ((null arg) "")
- ((integerp arg) (integer-to-string arg))
- ((floatp arg) (float-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) "})()"))
+(defun interleave (list element &optional after-last-p)
+ (unless (null list)
+ (with-collect
+ (collect (car list))
+ (dolist (x (cdr list))
+ (collect element)
+ (collect x))
+ (when after-last-p
+ (collect element)))))
;;; 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.
-#+jscl
-(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
;;; function call.
(defvar *multiple-value-p* nil)
-;; A very simple defstruct built on lists. It supports just slot with
-;; an optional default initform, and it will create a constructor,
-;; predicate and accessors for you.
-(defmacro def!struct (name &rest slots)
- (unless (symbolp name)
- (error "It is not a full defstruct implementation."))
- (let* ((name-string (symbol-name name))
- (slot-descriptions
- (mapcar (lambda (sd)
- (cond
- ((symbolp sd)
- (list sd))
- ((and (listp sd) (car sd) (cddr sd))
- sd)
- (t
- (error "Bad slot accessor."))))
- slots))
- (predicate (intern (concat name-string "-P"))))
- `(progn
- ;; Constructor
- (defun ,(intern (concat "MAKE-" name-string)) (&key ,@slot-descriptions)
- (list ',name ,@(mapcar #'car slot-descriptions)))
- ;; Predicate
- (defun ,predicate (x)
- (and (consp x) (eq (car x) ',name)))
- ;; Copier
- (defun ,(intern (concat "COPY-" name-string)) (x)
- (copy-list x))
- ;; Slot accessors
- ,@(with-collect
- (let ((index 1))
- (dolist (slot slot-descriptions)
- (let* ((name (car slot))
- (accessor-name (intern (concat name-string "-" (string name)))))
- (collect
- `(defun ,accessor-name (x)
- (unless (,predicate x)
- (error ,(concat "The object is not a type " name-string)))
- (nth ,index x)))
- ;; TODO: Implement this with a higher level
- ;; abstraction like defsetf or (defun (setf ..))
- (collect
- `(define-setf-expander ,accessor-name (x)
- (let ((object (gensym))
- (new-value (gensym)))
- (values (list object)
- (list x)
- (list new-value)
- `(progn
- (rplaca (nthcdr ,',index ,object) ,new-value)
- ,new-value)
- `(,',accessor-name ,object)))))
- (incf index)))))
- ',name)))
-
-
;;; Environment
(def!struct binding
(defvar *environment* (make-lexenv))
-
(defvar *variable-counter* 0)
(defun gvarname (symbol)
- (code "v" (incf *variable-counter*)))
+ (declare (ignore symbol))
+ (incf *variable-counter*)
+ (concat "v" (integer-to-string *variable-counter*)))
(defun translate-variable (symbol)
(awhen (lookup-in-lexenv symbol *environment* 'variable)
(defun toplevel-compilation (string)
(push string *toplevel-compilations*))
-(defun null-or-empty-p (x)
- (zerop (length x)))
-
(defun get-toplevel-compilations ()
- (reverse (remove-if #'null-or-empty-p *toplevel-compilations*)))
+ (reverse *toplevel-compilations*))
(defun %compile-defmacro (name lambda)
- (toplevel-compilation (ls-compile `',name))
+ (toplevel-compilation (convert `',name))
(let ((binding (make-binding :name name :type 'macro :value lambda)))
(push-to-lexenv binding *environment* 'function))
name)
`(push (list ',name (lambda ,args (block ,name ,@body)))
*compilations*))
-(define-compilation if (condition true false)
- (code "(" (ls-compile condition) " !== " (ls-compile nil)
- " ? " (ls-compile true *multiple-value-p*)
- " : " (ls-compile false *multiple-value-p*)
- ")"))
+(define-compilation if (condition true &optional false)
+ `(if (!== ,(convert condition) ,(convert nil))
+ ,(convert true *multiple-value-p*)
+ ,(convert false *multiple-value-p*)))
(defvar *ll-keywords* '(&optional &rest &key))
(defun ll-rest-argument (ll)
(let ((rest (ll-section '&rest ll)))
(when (cdr rest)
- (error "Bad lambda-list"))
+ (error "Bad lambda-list `~S'." ll))
(car rest)))
(defun ll-keyword-arguments-canonical (ll)
(flet ((canonicalize (keyarg)
;; Build a canonical keyword argument descriptor, filling
;; the optional fields. The result is a list of the form
- ;; ((keyword-name var) init-form).
+ ;; ((keyword-name var) init-form svar).
(let ((arg (ensure-list keyarg)))
(cons (if (listp (car arg))
(car arg)
(ll-optional-arguments-canonical lambda-list))))
(remove nil (mapcar #'third args))))
-(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-name/docstring-wrapper (name docstring code)
+ (if (or name docstring)
+ `(selfcall
+ (var (func ,code))
+ ,(when name `(= (get func "fname") ,name))
+ ,(when docstring `(= (get func "docstring") ,docstring))
+ (return func))
+ code))
(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))))
+ (let ((min n-required-arguments)
+ (max (if rest-p 'n/a (+ 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*)))
+ (when (and (< 0 min) (eql min max))
+ (return `(call |checkArgs| |nargs| ,min)))
;; General case:
- (code
- (when (< 1 min)
- (code "checkArgsAtLeast(arguments, " min ");" *newline*))
- (when (numberp max)
- (code "checkArgsAtMost(arguments, " max ");" *newline*))))))
+ `(progn
+ ,(when (< 0 min) `(call |checkArgsAtLeast| |nargs| ,min))
+ ,(when (numberp max) `(call |checkArgsAtMost| |nargs| ,max))))))
(defun compile-lambda-optional (ll)
(let* ((optional-arguments (ll-optional-arguments-canonical ll))
(n-required-arguments (length (ll-required-arguments ll)))
(n-optional-arguments (length optional-arguments)))
(when optional-arguments
- (code (mapconcat (lambda (arg)
- (code "var " (translate-variable (first arg)) "; " *newline*
- (when (third arg)
- (code "var " (translate-variable (third arg))
- " = " (ls-compile t)
- "; " *newline*))))
- optional-arguments)
- "switch(arguments.length-1){" *newline*
- (let ((cases nil)
- (idx 0))
- (progn
- (while (< idx n-optional-arguments)
- (let ((arg (nth idx optional-arguments)))
- (push (code "case " (+ idx n-required-arguments) ":" *newline*
- (indent (translate-variable (car arg))
- "="
- (ls-compile (cadr arg)) ";" *newline*)
- (when (third arg)
- (indent (translate-variable (third arg))
- "="
- (ls-compile nil)
- ";" *newline*)))
- cases)
- (incf idx)))
- (push (code "default: break;" *newline*) cases)
- (join (reverse cases))))
- "}" *newline*))))
+ `(switch |nargs|
+ ,@(with-collect
+ (dotimes (idx n-optional-arguments)
+ (let ((arg (nth idx optional-arguments)))
+ (collect `(case ,(+ idx n-required-arguments)))
+ (collect `(= ,(make-symbol (translate-variable (car arg)))
+ ,(convert (cadr arg))))
+ (collect (when (third arg)
+ `(= ,(make-symbol (translate-variable (third arg)))
+ ,(convert nil))))))
+ (collect 'default)
+ (collect '(break)))))))
(defun compile-lambda-rest (ll)
(let ((n-required-arguments (length (ll-required-arguments ll)))
(n-optional-arguments (length (ll-optional-arguments ll)))
(rest-argument (ll-rest-argument ll)))
(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*)))))
+ (let ((js!rest (make-symbol (translate-variable rest-argument))))
+ `(progn
+ (var (,js!rest ,(convert nil)))
+ (var i)
+ (for ((= i (- |nargs| 1))
+ (>= i ,(+ n-required-arguments n-optional-arguments))
+ (post-- i))
+ (= ,js!rest (object "car" (property |arguments| (+ i 2))
+ "cdr" ,js!rest))))))))
(defun compile-lambda-parse-keywords (ll)
(let ((n-required-arguments
(length (ll-optional-arguments ll)))
(keyword-arguments
(ll-keyword-arguments-canonical ll)))
- (code
- ;; Declare variables
- (mapconcat (lambda (arg)
- (let ((var (second (car arg))))
- (code "var " (translate-variable var) "; " *newline*
- (when (third arg)
- (code "var " (translate-variable (third arg))
- " = " (ls-compile nil)
- ";" *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*
- (let ((svar (third keyarg)))
- (when svar
- (code (translate-variable svar) " = " (ls-compile t) ";" *newline*)))
- "break;" *newline*)
- "}" *newline*)
- "}" *newline*
- ;; Default value
- "if (i == arguments.length){" *newline*
- (indent (translate-variable (cadr (car keyarg))) " = " (ls-compile (cadr keyarg)) ";" *newline*)
- "}" *newline*)))
- (when keyword-arguments
- (code "var i;" *newline*
- (mapconcat #'parse-keyword keyword-arguments))))
- ;; Check for unknown keywords
- (when keyword-arguments
- (code "for (i=" (+ 1 n-required-arguments n-optional-arguments)
- "; i<arguments.length; i+=2){" *newline*
- (indent "if ("
- (join (mapcar (lambda (x)
- (concat "arguments[i] !== " (ls-compile (caar x))))
- keyword-arguments)
- " && ")
- ")" *newline*
- (indent
- "throw 'Unknown keyword argument ' + arguments[i].name;" *newline*))
- "}" *newline*)))))
-
-(defun compile-lambda (ll body)
- (let ((required-arguments (ll-required-arguments ll))
- (optional-arguments (ll-optional-arguments ll))
- (keyword-arguments (ll-keyword-arguments ll))
- (rest-argument (ll-rest-argument ll))
- documentation)
- ;; Get the documentation string for the lambda function
- (when (and (stringp (car body))
+ `(progn
+ ;; Declare variables
+ ,@(with-collect
+ (dolist (keyword-argument keyword-arguments)
+ (destructuring-bind ((keyword-name var) &optional initform svar)
+ keyword-argument
+ (declare (ignore keyword-name initform))
+ (collect `(var ,(make-symbol (translate-variable var))))
+ (when svar
+ (collect
+ `(var (,(make-symbol (translate-variable svar))
+ ,(convert nil))))))))
+
+ ;; Parse keywords
+ ,(flet ((parse-keyword (keyarg)
+ (destructuring-bind ((keyword-name var) &optional initform svar) keyarg
+ ;; ((keyword-name var) init-form svar)
+ `(progn
+ (for ((= i ,(+ n-required-arguments n-optional-arguments))
+ (< i |nargs|)
+ (+= i 2))
+ ;; ....
+ (if (=== (property |arguments| (+ i 2))
+ ,(convert keyword-name))
+ (progn
+ (= ,(make-symbol (translate-variable var))
+ (property |arguments| (+ i 3)))
+ ,(when svar `(= ,(make-symbol (translate-variable svar))
+ ,(convert t)))
+ (break))))
+ (if (== i |nargs|)
+ (= ,(make-symbol (translate-variable var))
+ ,(convert initform)))))))
+ (when keyword-arguments
+ `(progn
+ (var i)
+ ,@(mapcar #'parse-keyword keyword-arguments))))
+
+ ;; Check for unknown keywords
+ ,(when keyword-arguments
+ `(progn
+ (var (start ,(+ n-required-arguments n-optional-arguments)))
+ (if (== (% (- |nargs| start) 2) 1)
+ (throw "Odd number of keyword arguments."))
+ (for ((= i start) (< i |nargs|) (+= i 2))
+ (if (and ,@(mapcar (lambda (keyword-argument)
+ (destructuring-bind ((keyword-name var) &optional initform svar)
+ keyword-argument
+ (declare (ignore var initform svar))
+ `(!== (property |arguments| (+ i 2)) ,(convert keyword-name))))
+ keyword-arguments))
+ (throw (+ "Unknown keyword argument "
+ (call |xstring|
+ (property
+ (property |arguments| (+ i 2))
+ "name")))))))))))
+
+(defun parse-lambda-list (ll)
+ (values (ll-required-arguments ll)
+ (ll-optional-arguments ll)
+ (ll-keyword-arguments ll)
+ (ll-rest-argument ll)))
+
+;;; Process BODY for declarations and/or docstrings. Return as
+;;; multiple values the BODY without docstrings or declarations, the
+;;; list of declaration forms and the docstring.
+(defun parse-body (body &key declarations docstring)
+ (let ((value-declarations)
+ (value-docstring))
+ ;; Parse declarations
+ (when declarations
+ (do* ((rest body (cdr rest))
+ (form (car rest) (car rest)))
+ ((or (atom form) (not (eq (car form) 'declare)))
+ (setf body rest))
+ (push form value-declarations)))
+ ;; Parse docstring
+ (when (and docstring
+ (stringp (car body))
(not (null (cdr body))))
- (setq documentation (car body))
+ (setq value-docstring (car body))
(setq body (cdr body)))
- (let ((n-required-arguments (length required-arguments))
- (n-optional-arguments (length optional-arguments))
- (*environment* (extend-local-env
- (append (ensure-list rest-argument)
- required-arguments
- optional-arguments
- keyword-arguments
- (ll-svars ll)))))
- (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 ll)
- (compile-lambda-rest ll)
- (compile-lambda-parse-keywords ll)
- (let ((*multiple-value-p* t))
- (ls-compile-block body t)))
- "})"))))
+ (values body value-declarations value-docstring)))
+
+;;; Compile a lambda function with lambda list LL and body BODY. If
+;;; NAME is given, it should be a constant string and it will become
+;;; the name of the function. If BLOCK is non-NIL, a named block is
+;;; created around the body. NOTE: No block (even anonymous) is
+;;; created if BLOCk is NIL.
+(defun compile-lambda (ll body &key name block)
+ (multiple-value-bind (required-arguments
+ optional-arguments
+ keyword-arguments
+ rest-argument)
+ (parse-lambda-list ll)
+ (multiple-value-bind (body decls documentation)
+ (parse-body body :declarations t :docstring t)
+ (declare (ignore decls))
+ (let ((n-required-arguments (length required-arguments))
+ (n-optional-arguments (length optional-arguments))
+ (*environment* (extend-local-env
+ (append (ensure-list rest-argument)
+ required-arguments
+ optional-arguments
+ keyword-arguments
+ (ll-svars ll)))))
+ (lambda-name/docstring-wrapper name documentation
+ `(function (|values| |nargs| ,@(mapcar (lambda (x)
+ (make-symbol (translate-variable x)))
+ (append required-arguments optional-arguments)))
+ ;; Check number of arguments
+ ,(lambda-check-argument-count n-required-arguments
+ n-optional-arguments
+ (or rest-argument keyword-arguments))
+ ,(compile-lambda-optional ll)
+ ,(compile-lambda-rest ll)
+ ,(compile-lambda-parse-keywords ll)
+
+ ,(let ((*multiple-value-p* t))
+ (if block
+ (convert-block `((block ,block ,@body)) t)
+ (convert-block body t)))))))))
(defun setq-pair (var val)
(eq (binding-type b) 'variable)
(not (member 'special (binding-declarations b)))
(not (member 'constant (binding-declarations b))))
- (code (binding-value b) " = " (ls-compile val)))
+ ;; TODO: Unnecesary make-symbol when codegen migration is
+ ;; finished.
+ `(= ,(make-symbol (binding-value b)) ,(convert val)))
((and b (eq (binding-type b) 'macro))
- (ls-compile `(setf ,var ,val)))
+ (convert `(setf ,var ,val)))
(t
- (ls-compile `(set ',var ,val))))))
+ (convert `(set ',var ,val))))))
(define-compilation setq (&rest pairs)
- (let ((result ""))
+ (let ((result nil))
+ (when (null pairs)
+ (return-from setq (convert nil)))
(while t
(cond
- ((null pairs) (return))
+ ((null pairs)
+ (return))
((null (cdr pairs))
- (error "Odd paris in SETQ"))
+ (error "Odd pairs in SETQ"))
(t
- (concatf result
- (concat (setq-pair (car pairs) (cadr pairs))
- (if (null (cddr pairs)) "" ", ")))
+ (push `,(setq-pair (car pairs) (cadr pairs)) result)
(setq pairs (cddr pairs)))))
- (code "(" result ")")))
-
-
-;;; Literals
-(defun escape-string (string)
- (let ((output "")
- (index 0)
- (size (length string)))
- (while (< index size)
- (let ((ch (char string index)))
- (when (or (char= ch #\") (char= ch #\\))
- (setq output (concat output "\\")))
- (when (or (char= ch #\newline))
- (setq output (concat output "\\"))
- (setq ch #\n))
- (setq output (concat output (string ch))))
- (incf index))
- output))
-
-
-(defvar *literal-symbols* nil)
+ `(progn ,@(reverse result))))
+
+
+;;; Compilation of literals an object dumping
+
+;;; BOOTSTRAP MAGIC: We record the macro definitions as lists during
+;;; the bootstrap. Once everything is compiled, we want to dump the
+;;; whole global environment to the output file to reproduce it in the
+;;; run-time. However, the environment must contain expander functions
+;;; rather than lists. We do not know how to dump function objects
+;;; itself, so we mark the list definitions with this object and the
+;;; compiler will be called when this object has to be dumped.
+;;; Backquote/unquote does a similar magic, but this use is exclusive.
+;;;
+;;; Indeed, perhaps to compile the object other macros need to be
+;;; evaluated. For this reason we define a valid macro-function for
+;;; this symbol.
+(defvar *magic-unquote-marker* (gensym "MAGIC-UNQUOTE"))
+
+#-jscl
+(setf (macro-function *magic-unquote-marker*)
+ (lambda (form &optional environment)
+ (declare (ignore environment))
+ (second form)))
+
+(defvar *literal-table* nil)
(defvar *literal-counter* 0)
(defun genlit ()
- (code "l" (incf *literal-counter*)))
+ (incf *literal-counter*)
+ (concat "l" (integer-to-string *literal-counter*)))
+
+(defun dump-symbol (symbol)
+ #-jscl
+ (let ((package (symbol-package symbol)))
+ (if (eq package (find-package "KEYWORD"))
+ `(new (call |Symbol| ,(dump-string (symbol-name symbol)) ,(dump-string (package-name package))))
+ `(new (call |Symbol| ,(dump-string (symbol-name symbol))))))
+ #+jscl
+ (let ((package (symbol-package symbol)))
+ (if (null package)
+ `(new (call |Symbol| ,(dump-string (symbol-name symbol))))
+ (convert `(intern ,(symbol-name symbol) ,(package-name package))))))
+
+(defun dump-cons (cons)
+ (let ((head (butlast cons))
+ (tail (last cons)))
+ `(call |QIList|
+ ,@(mapcar (lambda (x) (literal x t)) head)
+ ,(literal (car tail) t)
+ ,(literal (cdr tail) t))))
+
+(defun dump-array (array)
+ (let ((elements (vector-to-list array)))
+ (list-to-vector (mapcar #'literal elements))))
+
+(defun dump-string (string)
+ `(call |make_lisp_string| ,string))
(defun literal (sexp &optional recursive)
(cond
- ((integerp sexp) (integer-to-string sexp))
- ((floatp sexp) (float-to-string sexp))
- ((stringp sexp) (code "\"" (escape-string sexp) "\""))
- ((symbolp sexp)
- (or (cdr (assoc sexp *literal-symbols*))
- (let ((v (genlit))
- (s #+common-lisp
- (let ((package (symbol-package sexp)))
- (if (eq package (find-package "KEYWORD"))
- (code "{name: \"" (escape-string (symbol-name sexp))
- "\", 'package': '" (package-name package) "'}")
- (code "{name: \"" (escape-string (symbol-name sexp)) "\"}")))
- #+jscl
- (let ((package (symbol-package sexp)))
- (if (null package)
- (code "{name: \"" (escape-string (symbol-name sexp)) "\"}")
- (ls-compile `(intern ,(symbol-name sexp) ,(package-name package)))))))
- (push (cons sexp v) *literal-symbols*)
- (toplevel-compilation (code "var " v " = " s))
- v)))
- ((consp sexp)
- (let* ((head (butlast sexp))
- (tail (last sexp))
- (c (code "QIList("
- (join-trailing (mapcar (lambda (x) (literal x t)) head) ",")
- (literal (car tail) t)
- ","
- (literal (cdr tail) t)
- ")")))
- (if recursive
- c
- (let ((v (genlit)))
- (toplevel-compilation (code "var " v " = " c))
- v))))
- ((arrayp sexp)
- (let ((elements (vector-to-list sexp)))
- (let ((c (concat "[" (join (mapcar #'literal elements) ", ") "]")))
- (if recursive
- c
- (let ((v (genlit)))
- (toplevel-compilation (code "var " v " = " c))
- v)))))))
+ ((integerp sexp) sexp)
+ ((floatp sexp) sexp)
+ ((characterp sexp)
+ ;; TODO: Remove selfcall after migration
+ `(selfcall (return ,(string sexp))))
+ (t
+ (or (cdr (assoc sexp *literal-table* :test #'eql))
+ (let ((dumped (typecase sexp
+ (symbol (dump-symbol sexp))
+ (string (dump-string sexp))
+ (cons
+ ;; BOOTSTRAP MAGIC: See the root file
+ ;; jscl.lisp and the function
+ ;; `dump-global-environment' for futher
+ ;; information.
+ (if (eq (car sexp) *magic-unquote-marker*)
+ (convert (second sexp))
+ (dump-cons sexp)))
+ (array (dump-array sexp)))))
+ (if (and recursive (not (symbolp sexp)))
+ dumped
+ (let ((jsvar (genlit)))
+ (push (cons sexp (make-symbol jsvar)) *literal-table*)
+ (toplevel-compilation `(var (,(make-symbol jsvar) ,dumped)))
+ (when (keywordp sexp)
+ (toplevel-compilation `(= ,(get (make-symbol jsvar) "value") ,(make-symbol jsvar))))
+ (make-symbol jsvar))))))))
+
(define-compilation quote (sexp)
(literal sexp))
(define-compilation %while (pred &rest body)
- (js!selfcall
- "while(" (ls-compile pred) " !== " (ls-compile nil) "){" *newline*
- (indent (ls-compile-block body))
- "}"
- "return " (ls-compile nil) ";" *newline*))
+ `(selfcall
+ (while (!== ,(convert pred) ,(convert nil))
+ 0 ; TODO: Force
+ ; braces. Unnecesary when code
+ ; is gone
+ ,(convert-block body))
+ (return ,(convert nil))))
(define-compilation function (x)
(cond
((and (listp x) (eq (car x) 'lambda))
(compile-lambda (cadr x) (cddr x)))
+ ((and (listp x) (eq (car x) 'named-lambda))
+ (destructuring-bind (name ll &rest body) (cdr x)
+ (compile-lambda ll body
+ :name (symbol-name name)
+ :block name)))
((symbolp x)
(let ((b (lookup-in-lexenv x *environment* 'function)))
(if b
- (binding-value b)
- (ls-compile `(symbol-function ',x)))))))
-
+ (make-symbol (binding-value b))
+ (convert `(symbol-function ',x)))))))
(defun make-function-binding (fname)
(make-binding :name fname :type 'function :value (gvarname fname)))
(define-compilation flet (definitions &rest body)
(let* ((fnames (mapcar #'car definitions))
- (fbody (mapcar #'cdr definitions))
- (cfuncs (mapcar #'compile-function-definition fbody))
+ (cfuncs (mapcar (lambda (def)
+ (compile-lambda (cadr def)
+ `((block ,(car def)
+ ,@(cddr def)))))
+ definitions))
(*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 ",") ")")))
+ `(call (function ,(mapcar #'make-symbol (mapcar #'translate-function fnames))
+ ,(convert-block body t))
+ ,@cfuncs)))
(define-compilation labels (definitions &rest body)
(let* ((fnames (mapcar #'car definitions))
(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))))
+ `(selfcall
+ ,@(mapcar (lambda (func)
+ `(var (,(make-symbol (translate-function (car func)))
+ ,(compile-lambda (cadr func)
+ `((block ,(car func) ,@(cddr func)))))))
+ definitions)
+ ,(convert-block body t))))
(defvar *compiling-file* nil)
(if *compiling-file*
(progn
(eval (cons 'progn body))
- nil)
- (ls-compile `(progn ,@body))))
+ (convert 0))
+ (convert `(progn ,@body))))
(defmacro define-transformation (name args form)
`(define-compilation ,name ,args
- (ls-compile ,form)))
+ (convert ,form)))
(define-compilation progn (&rest body)
(if (null (cdr body))
- (ls-compile (car body) *multiple-value-p*)
- (js!selfcall (ls-compile-block body t))))
+ (convert (car body) *multiple-value-p*)
+ `(progn
+ ,@(append (mapcar #'convert (butlast body))
+ (list (convert (car (last body)) t))))))
+
+(define-compilation macrolet (definitions &rest body)
+ (let ((*environment* (copy-lexenv *environment*)))
+ (dolist (def definitions)
+ (destructuring-bind (name lambda-list &body body) def
+ (let ((binding (make-binding :name name :type 'macro :value
+ (let ((g!form (gensym)))
+ `(lambda (,g!form)
+ (destructuring-bind ,lambda-list ,g!form
+ ,@body))))))
+ (push-to-lexenv binding *environment* 'function))))
+ (convert `(progn ,@body) *multiple-value-p*)))
+
(defun special-variable-p (x)
(and (claimp x 'variable 'special) t))
(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*))
+ `(progn
+ (try (var tmp)
+ ,@(with-collect
+ (dolist (b bindings)
+ (let ((s (convert `',(car b))))
+ (collect `(= tmp (get ,s "value")))
+ (collect `(= (get ,s "value") ,(cdr b)))
+ (collect `(= ,(cdr b) tmp)))))
+ ,body)
+ (finally
+ ,@(with-collect
+ (dolist (b bindings)
+ (let ((s (convert `(quote ,(car b)))))
+ (collect `(= (get ,s "value") ,(cdr b)))))))))
(define-compilation let (bindings &rest body)
(let* ((bindings (mapcar #'ensure-list bindings))
(variables (mapcar #'first bindings))
- (cvalues (mapcar #'ls-compile (mapcar #'second bindings)))
+ (cvalues (mapcar #'convert (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 ",") ")")))
+ `(call (function ,(mapcar (lambda (x)
+ (if (special-variable-p x)
+ (let ((v (gvarname x)))
+ (push (cons x (make-symbol v)) dynamic-bindings)
+ (make-symbol v))
+ (make-symbol (translate-variable x))))
+ variables)
+ ,(let ((body (convert-block body t t)))
+ `,(let-binding-wrapper dynamic-bindings body)))
+ ,@cvalues)))
;;; Return the code to initialize BINDING, and push it extending the
(let ((var (first binding))
(value (second binding)))
(if (special-variable-p var)
- (code (ls-compile `(setq ,var ,value)) ";" *newline*)
+ (convert `(setq ,var ,value))
(let* ((v (gvarname var))
(b (make-binding :name var :type 'variable :value v)))
- (prog1 (code "var " v " = " (ls-compile value) ";" *newline*)
+ (prog1 `(var (,(make-symbol v) ,(convert value)))
(push-to-lexenv b *environment* 'variable))))))
;;; Wrap BODY to restore the symbol values of SYMBOLS after body. It
(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*)))
+ `(progn
+ (try
+ ,@(mapcar (lambda (b)
+ (let ((s (convert `(quote ,(car b)))))
+ `(var (,(make-symbol (cdr b)) (get ,s "value")))))
+ store)
+ ,body)
+ (finally
+ ,@(mapcar (lambda (b)
+ (let ((s (convert `(quote ,(car b)))))
+ `(= (get ,s "value") ,(make-symbol (cdr b)))))
+ store)))))
(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)))))
+ (let ((specials (remove-if-not #'special-variable-p (mapcar #'first bindings)))
+ (body `(progn
+ ,@(mapcar #'let*-initialize-value bindings)
+ ,(convert-block body t t))))
+ `(selfcall ,(let*-binding-wrapper specials body)))))
-(defvar *block-counter* 0)
-
(define-compilation block (name &rest body)
- (let* ((tr (incf *block-counter*))
- (b (make-binding :name name :type 'block :value tr)))
+ ;; We use Javascript exceptions to implement non local control
+ ;; transfer. Exceptions has dynamic scoping, so we use a uniquely
+ ;; generated object to identify the block. The instance of a empty
+ ;; array is used to distinguish between nested dynamic Javascript
+ ;; exceptions. See https://github.com/davazp/jscl/issues/64 for
+ ;; futher details.
+ (let* ((idvar (gvarname name))
+ (b (make-binding :name name :type 'block :value idvar)))
(when *multiple-value-p*
(push 'multiple-value (binding-declarations b)))
(let* ((*environment* (extend-lexenv (list b) *environment* 'block))
- (cbody (ls-compile-block body t)))
+ (cbody (convert-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)))))
+ `(selfcall
+ (try
+ (var (,(make-symbol idvar) #()))
+ ,cbody)
+ (catch (cf)
+ (if (and (== (get cf "type") "block")
+ (== (get cf "id") ,(make-symbol idvar)))
+ ,(if *multiple-value-p*
+ `(return (call (get |values| "apply") this (call |forcemv| (get cf "values"))))
+ `(return (get cf "values")))
+ (throw cf))))
+ ;; TODO: is selfcall necessary here?
+ `(selfcall ,cbody)))))
(define-compilation return-from (name &optional value)
(let* ((b (lookup-in-lexenv name *environment* 'block))
(multiple-value-p (member 'multiple-value (binding-declarations b))))
(when (null b)
- (error (concat "Unknown block `" (symbol-name name) "'.")))
+ (error "Return from unknown block `~S'." (symbol-name name)))
(push 'used (binding-declarations 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) ".'"
- "})")))
+ ;; The binding value is the name of a variable, whose value is the
+ ;; unique identifier of the block as exception. We can't use the
+ ;; variable name itself, because it could not to be unique, so we
+ ;; capture it in a closure.
+ `(selfcall
+ ,(when multiple-value-p `(var (|values| |mv|)))
+ (throw
+ (object
+ "type" "block"
+ "id" ,(make-symbol (binding-value b))
+ "values" ,(convert value multiple-value-p)
+ "message" ,(concat "Return from unknown block '" (symbol-name name) "'."))))))
(define-compilation catch (id &rest body)
- (js!selfcall
- "var id = " (ls-compile id) ";" *newline*
- "try {" *newline*
- (indent (ls-compile-block body t)) *newline*
- "}" *newline*
- "catch (cf){" *newline*
- " if (cf.type == 'catch' && cf.id == id)" *newline*
- (if *multiple-value-p*
- " return values.apply(this, forcemv(cf.values));"
- " return pv.apply(this, forcemv(cf.values));")
- *newline*
- " else" *newline*
- " throw cf;" *newline*
- "}" *newline*))
+ `(selfcall
+ (var (|id| ,(convert id)))
+ (try
+ ,(convert-block body t))
+ (catch (|cf|)
+ (if (and (== (get |cf| "type") "catch")
+ (== (get |cf| "id") |id|))
+ ,(if *multiple-value-p*
+ `(return (call (get |values| "apply")
+ this
+ (call |forcemv| (get |cf| "values"))))
+ `(return (call (get |pv| "apply")
+ this
+ (call |forcemv| (get |cf| "values")))))
+ (throw |cf|)))))
(define-compilation throw (id value)
- (js!selfcall
- "var values = mv;" *newline*
- "throw ({"
- "type: 'catch', "
- "id: " (ls-compile id) ", "
- "values: " (ls-compile value t) ", "
- "message: 'Throw uncatched.'"
- "})"))
-
-
-(defvar *tagbody-counter* 0)
-(defvar *go-tag-counter* 0)
+ `(selfcall
+ (var (|values| |mv|))
+ (throw (object
+ |type| "catch"
+ |id| ,(convert id)
+ |values| ,(convert value t)
+ |message| "Throw uncatched."))))
(defun go-tag-p (x)
(or (integerp x) (symbolp x)))
(defun declare-tagbody-tags (tbidx body)
- (let ((bindings
- (mapcar (lambda (label)
- (let ((tagidx (integer-to-string (incf *go-tag-counter*))))
- (make-binding :name label :type 'gotag :value (list tbidx tagidx))))
- (remove-if-not #'go-tag-p body))))
+ (let* ((go-tag-counter 0)
+ (bindings
+ (mapcar (lambda (label)
+ (let ((tagidx (incf go-tag-counter)))
+ (make-binding :name label :type 'gotag :value (list tbidx tagidx))))
+ (remove-if-not #'go-tag-p body))))
(extend-lexenv bindings *environment* 'gotag)))
(define-compilation tagbody (&rest body)
;; 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))))
+ (return-from tagbody (convert `(progn ,@body nil))))
;; The translation assumes the first form in BODY is a label
(unless (go-tag-p (car body))
(push (gensym "START") body))
;; Tagbody compilation
- (let ((tbidx *tagbody-counter*))
+ (let ((branch (gvarname 'branch))
+ (tbidx (gvarname 'tbidx)))
(let ((*environment* (declare-tagbody-tags tbidx body))
initag)
(let ((b (lookup-in-lexenv (first body) *environment* 'gotag)))
(setq initag (second (binding-value b))))
- (js!selfcall
- "var tagbody_" tbidx " = " initag ";" *newline*
- "tbloop:" *newline*
- "while (true) {" *newline*
- (indent "try {" *newline*
- (indent (let ((content ""))
- (code "switch(tagbody_" tbidx "){" *newline*
- "case " initag ":" *newline*
- (dolist (form (cdr body) content)
- (concatf content
- (if (not (go-tag-p form))
- (indent (ls-compile form) ";" *newline*)
- (let ((b (lookup-in-lexenv form *environment* 'gotag)))
- (code "case " (second (binding-value b)) ":" *newline*)))))
- "default:" *newline*
- " break tbloop;" *newline*
- "}" *newline*)))
- "}" *newline*
- "catch (jump) {" *newline*
- " if (jump.type == 'tagbody' && jump.id == " tbidx ")" *newline*
- " tagbody_" tbidx " = jump.label;" *newline*
- " else" *newline*
- " throw(jump);" *newline*
- "}" *newline*)
- "}" *newline*
- "return " (ls-compile nil) ";" *newline*))))
+ `(selfcall
+ ;; TAGBODY branch to take
+ (var (,(make-symbol branch) ,initag))
+ (var (,(make-symbol tbidx) #()))
+ (label tbloop
+ (while true
+ (try
+ (switch ,(make-symbol branch)
+ ,@(with-collect
+ (collect `(case ,initag))
+ (dolist (form (cdr body))
+ (if (go-tag-p form)
+ (let ((b (lookup-in-lexenv form *environment* 'gotag)))
+ (collect `(case ,(second (binding-value b)))))
+ (collect (convert form)))))
+ default
+ (break tbloop)))
+ (catch (jump)
+ (if (and (== (get jump "type") "tagbody")
+ (== (get jump "id") ,(make-symbol tbidx)))
+ (= ,(make-symbol branch) (get jump "label"))
+ (throw jump)))))
+ (return ,(convert nil))))))
(define-compilation go (label)
(let ((b (lookup-in-lexenv label *environment* 'gotag))
((symbolp label) (symbol-name label))
((integerp label) (integer-to-string label)))))
(when (null b)
- (error (concat "Unknown tag `" n "'.")))
- (js!selfcall
- "throw ({"
- "type: 'tagbody', "
- "id: " (first (binding-value b)) ", "
- "label: " (second (binding-value b)) ", "
- "message: 'Attempt to GO to non-existing tag " n "'"
- "})" *newline*)))
+ (error "Unknown tag `~S'" label))
+ `(selfcall
+ (throw
+ (object
+ "type" "tagbody"
+ "id" ,(make-symbol (first (binding-value b)))
+ "label" ,(second (binding-value b))
+ "message" ,(concat "Attempt to GO to non-existing tag " n))))))
(define-compilation unwind-protect (form &rest clean-up)
- (js!selfcall
- "var ret = " (ls-compile nil) ";" *newline*
- "try {" *newline*
- (indent "ret = " (ls-compile form) ";" *newline*)
- "} finally {" *newline*
- (indent (ls-compile-block clean-up))
- "}" *newline*
- "return ret;" *newline*))
+ `(selfcall
+ (var (|ret| ,(convert nil)))
+ (try
+ (= |ret| ,(convert form)))
+ (finally
+ ,(convert-block clean-up))
+ (return |ret|)))
(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*))
+ `(selfcall
+ (var (func ,(convert func-form)))
+ (var (args ,(vector (if *multiple-value-p* '|values| '|pv|) 0)))
+ (return
+ (selfcall
+ (var (|values| |mv|))
+ (var vs)
+ (progn
+ ,@(with-collect
+ (dolist (form forms)
+ (collect `(= vs ,(convert form t)))
+ (collect `(if (and (=== (typeof vs) "object")
+ (in "multiple-value" vs))
+ (= args (call (get args "concat") vs))
+ (call (get args "push") vs))))))
+ (= (property args 1) (- (property args "length") 2))
+ (return (call (get func "apply") |window| args))))))
(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*))
-
-
-;;; Javascript FFI
-
-(define-compilation %js-vref (var) var)
-
-(define-compilation %js-vset (var val)
- (code "(" var " = " (ls-compile val) ")"))
-
-(define-setf-expander %js-vref (var)
- (let ((new-value (gensym)))
- (unless (stringp var)
- (error "a string was expected"))
- (values nil
- (list var)
- (list new-value)
- `(%js-vset ,var ,new-value)
- `(%js-vref ,var))))
-
-
-;;; Backquote implementation.
-;;;
-;;; Author: Guy L. Steele Jr. Date: 27 December 1985
-;;; Tested under Symbolics Common Lisp and Lucid Common Lisp.
-;;; This software is in the public domain.
-
-;;; The following are unique tokens used during processing.
-;;; They need not be symbols; they need not even be atoms.
-(defvar *comma* 'unquote)
-(defvar *comma-atsign* 'unquote-splicing)
-
-(defvar *bq-list* (make-symbol "BQ-LIST"))
-(defvar *bq-append* (make-symbol "BQ-APPEND"))
-(defvar *bq-list** (make-symbol "BQ-LIST*"))
-(defvar *bq-nconc* (make-symbol "BQ-NCONC"))
-(defvar *bq-clobberable* (make-symbol "BQ-CLOBBERABLE"))
-(defvar *bq-quote* (make-symbol "BQ-QUOTE"))
-(defvar *bq-quote-nil* (list *bq-quote* nil))
-
-;;; BACKQUOTE is an ordinary macro (not a read-macro) that processes
-;;; the expression foo, looking for occurrences of #:COMMA,
-;;; #:COMMA-ATSIGN, and #:COMMA-DOT. It constructs code in strict
-;;; accordance with the rules on pages 349-350 of the first edition
-;;; (pages 528-529 of this second edition). It then optionally
-;;; applies a code simplifier.
-
-;;; If the value of *BQ-SIMPLIFY* is non-NIL, then BACKQUOTE
-;;; processing applies the code simplifier. If the value is NIL,
-;;; then the code resulting from BACKQUOTE is exactly that
-;;; specified by the official rules.
-(defparameter *bq-simplify* t)
-
-(defmacro backquote (x)
- (bq-completely-process x))
-
-;;; Backquote processing proceeds in three stages:
-;;;
-;;; (1) BQ-PROCESS applies the rules to remove occurrences of
-;;; #:COMMA, #:COMMA-ATSIGN, and #:COMMA-DOT corresponding to
-;;; this level of BACKQUOTE. (It also causes embedded calls to
-;;; BACKQUOTE to be expanded so that nesting is properly handled.)
-;;; Code is produced that is expressed in terms of functions
-;;; #:BQ-LIST, #:BQ-APPEND, and #:BQ-CLOBBERABLE. This is done
-;;; so that the simplifier will simplify only list construction
-;;; functions actually generated by BACKQUOTE and will not involve
-;;; any user code in the simplification. #:BQ-LIST means LIST,
-;;; #:BQ-APPEND means APPEND, and #:BQ-CLOBBERABLE means IDENTITY
-;;; but indicates places where "%." was used and where NCONC may
-;;; therefore be introduced by the simplifier for efficiency.
-;;;
-;;; (2) BQ-SIMPLIFY, if used, rewrites the code produced by
-;;; BQ-PROCESS to produce equivalent but faster code. The
-;;; additional functions #:BQ-LIST* and #:BQ-NCONC may be
-;;; introduced into the code.
-;;;
-;;; (3) BQ-REMOVE-TOKENS goes through the code and replaces
-;;; #:BQ-LIST with LIST, #:BQ-APPEND with APPEND, and so on.
-;;; #:BQ-CLOBBERABLE is simply eliminated (a call to it being
-;;; replaced by its argument). #:BQ-LIST* is replaced by either
-;;; LIST* or CONS (the latter is used in the two-argument case,
-;;; purely to make the resulting code a tad more readable).
-
-(defun bq-completely-process (x)
- (let ((raw-result (bq-process x)))
- (bq-remove-tokens (if *bq-simplify*
- (bq-simplify raw-result)
- raw-result))))
-
-(defun bq-process (x)
- (cond ((atom x)
- (list *bq-quote* x))
- ((eq (car x) 'backquote)
- (bq-process (bq-completely-process (cadr x))))
- ((eq (car x) *comma*) (cadr x))
- ((eq (car x) *comma-atsign*)
- ;; (error ",@~S after `" (cadr x))
- (error "ill-formed"))
- ;; ((eq (car x) *comma-dot*)
- ;; ;; (error ",.~S after `" (cadr x))
- ;; (error "ill-formed"))
- (t (do ((p x (cdr p))
- (q '() (cons (bracket (car p)) q)))
- ((atom p)
- (cons *bq-append*
- (nreconc q (list (list *bq-quote* p)))))
- (when (eq (car p) *comma*)
- (unless (null (cddr p))
- ;; (error "Malformed ,~S" p)
- (error "Malformed"))
- (return (cons *bq-append*
- (nreconc q (list (cadr p))))))
- (when (eq (car p) *comma-atsign*)
- ;; (error "Dotted ,@~S" p)
- (error "Dotted"))
- ;; (when (eq (car p) *comma-dot*)
- ;; ;; (error "Dotted ,.~S" p)
- ;; (error "Dotted"))
- ))))
-
-;;; This implements the bracket operator of the formal rules.
-(defun bracket (x)
- (cond ((atom x)
- (list *bq-list* (bq-process x)))
- ((eq (car x) *comma*)
- (list *bq-list* (cadr x)))
- ((eq (car x) *comma-atsign*)
- (cadr x))
- ;; ((eq (car x) *comma-dot*)
- ;; (list *bq-clobberable* (cadr x)))
- (t (list *bq-list* (bq-process x)))))
-
-;;; This auxiliary function is like MAPCAR but has two extra
-;;; purposes: (1) it handles dotted lists; (2) it tries to make
-;;; the result share with the argument x as much as possible.
-(defun maptree (fn x)
- (if (atom x)
- (funcall fn x)
- (let ((a (funcall fn (car x)))
- (d (maptree fn (cdr x))))
- (if (and (eql a (car x)) (eql d (cdr x)))
- x
- (cons a d)))))
-
-;;; This predicate is true of a form that when read looked
-;;; like %@foo or %.foo.
-(defun bq-splicing-frob (x)
- (and (consp x)
- (or (eq (car x) *comma-atsign*)
- ;; (eq (car x) *comma-dot*)
- )))
-
-;;; This predicate is true of a form that when read
-;;; looked like %@foo or %.foo or just plain %foo.
-(defun bq-frob (x)
- (and (consp x)
- (or (eq (car x) *comma*)
- (eq (car x) *comma-atsign*)
- ;; (eq (car x) *comma-dot*)
- )))
-
-;;; The simplifier essentially looks for calls to #:BQ-APPEND and
-;;; tries to simplify them. The arguments to #:BQ-APPEND are
-;;; processed from right to left, building up a replacement form.
-;;; At each step a number of special cases are handled that,
-;;; loosely speaking, look like this:
-;;;
-;;; (APPEND (LIST a b c) foo) => (LIST* a b c foo)
-;;; provided a, b, c are not splicing frobs
-;;; (APPEND (LIST* a b c) foo) => (LIST* a b (APPEND c foo))
-;;; provided a, b, c are not splicing frobs
-;;; (APPEND (QUOTE (x)) foo) => (LIST* (QUOTE x) foo)
-;;; (APPEND (CLOBBERABLE x) foo) => (NCONC x foo)
-(defun bq-simplify (x)
- (if (atom x)
- x
- (let ((x (if (eq (car x) *bq-quote*)
- x
- (maptree #'bq-simplify x))))
- (if (not (eq (car x) *bq-append*))
- x
- (bq-simplify-args x)))))
-
-(defun bq-simplify-args (x)
- (do ((args (reverse (cdr x)) (cdr args))
- (result
- nil
- (cond ((atom (car args))
- (bq-attach-append *bq-append* (car args) result))
- ((and (eq (caar args) *bq-list*)
- (notany #'bq-splicing-frob (cdar args)))
- (bq-attach-conses (cdar args) result))
- ((and (eq (caar args) *bq-list**)
- (notany #'bq-splicing-frob (cdar args)))
- (bq-attach-conses
- (reverse (cdr (reverse (cdar args))))
- (bq-attach-append *bq-append*
- (car (last (car args)))
- result)))
- ((and (eq (caar args) *bq-quote*)
- (consp (cadar args))
- (not (bq-frob (cadar args)))
- (null (cddar args)))
- (bq-attach-conses (list (list *bq-quote*
- (caadar args)))
- result))
- ((eq (caar args) *bq-clobberable*)
- (bq-attach-append *bq-nconc* (cadar args) result))
- (t (bq-attach-append *bq-append*
- (car args)
- result)))))
- ((null args) result)))
-
-(defun null-or-quoted (x)
- (or (null x) (and (consp x) (eq (car x) *bq-quote*))))
-
-;;; When BQ-ATTACH-APPEND is called, the OP should be #:BQ-APPEND
-;;; or #:BQ-NCONC. This produces a form (op item result) but
-;;; some simplifications are done on the fly:
-;;;
-;;; (op '(a b c) '(d e f g)) => '(a b c d e f g)
-;;; (op item 'nil) => item, provided item is not a splicable frob
-;;; (op item 'nil) => (op item), if item is a splicable frob
-;;; (op item (op a b c)) => (op item a b c)
-(defun bq-attach-append (op item result)
- (cond ((and (null-or-quoted item) (null-or-quoted result))
- (list *bq-quote* (append (cadr item) (cadr result))))
- ((or (null result) (equal result *bq-quote-nil*))
- (if (bq-splicing-frob item) (list op item) item))
- ((and (consp result) (eq (car result) op))
- (list* (car result) item (cdr result)))
- (t (list op item result))))
-
-;;; The effect of BQ-ATTACH-CONSES is to produce a form as if by
-;;; `(LIST* ,@items ,result) but some simplifications are done
-;;; on the fly.
-;;;
-;;; (LIST* 'a 'b 'c 'd) => '(a b c . d)
-;;; (LIST* a b c 'nil) => (LIST a b c)
-;;; (LIST* a b c (LIST* d e f g)) => (LIST* a b c d e f g)
-;;; (LIST* a b c (LIST d e f g)) => (LIST a b c d e f g)
-(defun bq-attach-conses (items result)
- (cond ((and (every #'null-or-quoted items)
- (null-or-quoted result))
- (list *bq-quote*
- (append (mapcar #'cadr items) (cadr result))))
- ((or (null result) (equal result *bq-quote-nil*))
- (cons *bq-list* items))
- ((and (consp result)
- (or (eq (car result) *bq-list*)
- (eq (car result) *bq-list**)))
- (cons (car result) (append items (cdr result))))
- (t (cons *bq-list** (append items (list result))))))
-
-;;; Removes funny tokens and changes (#:BQ-LIST* a b) into
-;;; (CONS a b) instead of (LIST* a b), purely for readability.
-(defun bq-remove-tokens (x)
- (cond ((eq x *bq-list*) 'list)
- ((eq x *bq-append*) 'append)
- ((eq x *bq-nconc*) 'nconc)
- ((eq x *bq-list**) 'list*)
- ((eq x *bq-quote*) 'quote)
- ((atom x) x)
- ((eq (car x) *bq-clobberable*)
- (bq-remove-tokens (cadr x)))
- ((and (eq (car x) *bq-list**)
- (consp (cddr x))
- (null (cdddr x)))
- (cons 'cons (maptree #'bq-remove-tokens (cdr x))))
- (t (maptree #'bq-remove-tokens x))))
+ `(selfcall
+ (var (args ,(convert first-form *multiple-value-p*)))
+ ;; TODO: Interleave is temporal
+ (progn ,@(mapcar #'convert forms))
+ (return args)))
(define-transformation backquote (form)
(bq-completely-process form))
(defmacro define-builtin (name args &body body)
`(define-raw-builtin ,name ,args
- (let ,(mapcar (lambda (arg) `(,arg (ls-compile ,arg))) args)
+ (let ,(mapcar (lambda (arg) `(,arg (convert ,arg))) args)
,@body)))
-;;; DECLS is a list of (JSVARNAME TYPE LISPFORM) declarations.
-(defmacro type-check (decls &body body)
- `(js!selfcall
- ,@(mapcar (lambda (decl)
- `(code "var " ,(first decl) " = " ,(third decl) ";" *newline*))
- decls)
- ,@(mapcar (lambda (decl)
- `(code "if (typeof " ,(first decl) " != '" ,(second decl) "')" *newline*
- (indent "throw 'The value ' + "
- ,(first decl)
- " + ' is not a type "
- ,(second decl)
- ".';"
- *newline*)))
- decls)
- (code "return " (progn ,@body) ";" *newline*)))
-
;;; VARIABLE-ARITY compiles variable arity operations. ARGS stands for
;;; a variable which holds a list of forms. It will compile them and
;;; store the result in some Javascript variables. BODY is evaluated
;;; with ARGS bound to the list of these variables to generate the
;;; code which performs the transformation on these variables.
-
(defun variable-arity-call (args function)
(unless (consp args)
(error "ARGS must be a non-empty list"))
(let ((counter 0)
(fargs '())
- (prelude ""))
+ (prelude '()))
(dolist (x args)
- (cond
- ((floatp x) (push (float-to-string x) fargs))
- ((numberp x) (push (integer-to-string x) fargs))
- (t (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)))))
+ (if (or (floatp x) (numberp x))
+ (push x fargs)
+ (let ((v (make-symbol (concat "x" (integer-to-string (incf counter))))))
+ (push v fargs)
+ (push `(var (,v ,(convert x)))
+ prelude)
+ (push `(if (!= (typeof ,v) "number")
+ (throw "Not a number!"))
+ prelude))))
+ `(selfcall
+ (progn ,@(reverse prelude))
+ ,(funcall function (reverse fargs)))))
(defmacro variable-arity (args &body body)
(unless (symbolp args)
- (error "Bad usage of VARIABLE-ARITY, you must pass a symbol"))
- `(variable-arity-call ,args
- (lambda (,args)
- (code "return " ,@body ";" *newline*))))
-
-(defun num-op-num (x op y)
- (type-check (("x" "number" x) ("y" "number" y))
- (code "x" op "y")))
+ (error "`~S' is not a symbol." args))
+ `(variable-arity-call ,args (lambda (,args) `(return ,,@body))))
(define-raw-builtin + (&rest numbers)
(if (null numbers)
- "0"
+ 0
(variable-arity numbers
- (join numbers "+"))))
+ `(+ ,@numbers))))
(define-raw-builtin - (x &rest others)
(let ((args (cons x others)))
- (variable-arity args
- (if (null others)
- (concat "-" (car args))
- (join args "-")))))
+ (variable-arity args `(- ,@args))))
(define-raw-builtin * (&rest numbers)
(if (null numbers)
- "1"
- (variable-arity numbers
- (join numbers "*"))))
+ 1
+ (variable-arity numbers `(* ,@numbers))))
(define-raw-builtin / (x &rest others)
(let ((args (cons x others)))
(variable-arity args
(if (null others)
- (concat "1 /" (car args))
- (join args "/")))))
+ `(/ 1 ,(car args))
+ (reduce (lambda (x y) `(/ ,x ,y))
+ args)))))
-(define-builtin mod (x y) (num-op-num x "%" y))
+(define-builtin mod (x y)
+ `(% ,x ,y))
(defun comparison-conjuntion (vars op)
(cond
((null (cdr vars))
- "true")
+ 'true)
((null (cddr vars))
- (concat (car vars) op (cadr vars)))
+ `(,op ,(car vars) ,(cadr vars)))
(t
- (concat (car vars) op (cadr vars)
- " && "
- (comparison-conjuntion (cdr vars) op)))))
+ `(and (,op ,(car vars) ,(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))))))
+ `(bool ,(comparison-conjuntion args ',sym))))))
-(define-builtin-comparison > ">")
-(define-builtin-comparison < "<")
-(define-builtin-comparison >= ">=")
-(define-builtin-comparison <= "<=")
-(define-builtin-comparison = "==")
+(define-builtin-comparison > >)
+(define-builtin-comparison < <)
+(define-builtin-comparison >= >=)
+(define-builtin-comparison <= <=)
+(define-builtin-comparison = ==)
+(define-builtin-comparison /= !=)
(define-builtin numberp (x)
- (js!bool (code "(typeof (" x ") == \"number\")")))
+ `(bool (== (typeof ,x) "number")))
(define-builtin floor (x)
- (type-check (("x" "number" x))
- "Math.floor(x)"))
+ `(call (get |Math| |floor|) ,x))
(define-builtin expt (x y)
- (type-check (("x" "number" x)
- ("y" "number" y))
- "Math.pow(x, y)"))
+ `(call (get |Math| |pow|) ,x ,y))
(define-builtin float-to-string (x)
- (type-check (("x" "number" x))
- "x.toString()"))
+ `(call |make_lisp_string| (call (get ,x |toString|))))
(define-builtin cons (x y)
- (code "({car: " x ", cdr: " y "})"))
+ `(object "car" ,x "cdr" ,y))
(define-builtin consp (x)
- (js!bool
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return (typeof tmp == 'object' && 'car' in tmp);" *newline*)))
+ `(selfcall
+ (var (tmp ,x))
+ (return (bool (and (== (typeof tmp) "object")
+ (in "car" tmp))))))
(define-builtin car (x)
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return tmp === " (ls-compile nil)
- "? " (ls-compile nil)
- ": tmp.car;" *newline*))
+ `(selfcall
+ (var (tmp ,x))
+ (return (if (=== tmp ,(convert nil))
+ ,(convert nil)
+ (get tmp "car")))))
(define-builtin cdr (x)
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return tmp === " (ls-compile nil) "? "
- (ls-compile nil)
- ": tmp.cdr;" *newline*))
+ `(selfcall
+ (var (tmp ,x))
+ (return (if (=== tmp ,(convert nil))
+ ,(convert nil)
+ (get tmp "cdr")))))
(define-builtin rplaca (x new)
- (type-check (("x" "object" x))
- (code "(x.car = " new ", x)")))
+ `(= (get ,x "car") ,new))
(define-builtin rplacd (x new)
- (type-check (("x" "object" x))
- (code "(x.cdr = " new ", x)")))
+ `(= (get ,x "cdr") ,new))
(define-builtin symbolp (x)
- (js!bool
- (js!selfcall
- "var tmp = " x ";" *newline*
- "return (typeof tmp == 'object' && 'name' in tmp);" *newline*)))
+ `(bool (instanceof ,x |Symbol|)))
(define-builtin make-symbol (name)
- (type-check (("name" "string" name))
- "({name: name})"))
+ `(new (call |Symbol| ,name)))
(define-builtin symbol-name (x)
- (code "(" x ").name"))
+ `(get ,x "name"))
(define-builtin set (symbol value)
- (code "(" symbol ").value = " value))
+ `(= (get ,symbol "value") ,value))
(define-builtin fset (symbol value)
- (code "(" symbol ").fvalue = " value))
+ `(= (get ,symbol "fvalue") ,value))
(define-builtin boundp (x)
- (js!bool (code "(" x ".value !== undefined)")))
+ `(bool (!== (get ,x "value") undefined)))
+
+(define-builtin fboundp (x)
+ `(bool (!== (get ,x "fvalue") undefined)))
(define-builtin symbol-value (x)
- (js!selfcall
- "var symbol = " x ";" *newline*
- "var value = symbol.value;" *newline*
- "if (value === undefined) throw \"Variable `\" + symbol.name + \"' is unbound.\";" *newline*
- "return value;" *newline*))
+ `(selfcall
+ (var (symbol ,x)
+ (value (get symbol "value")))
+ (if (=== value undefined)
+ (throw (+ "Variable `" (call |xstring| (get symbol "name")) "' is unbound.")))
+ (return value)))
(define-builtin symbol-function (x)
- (js!selfcall
- "var symbol = " x ";" *newline*
- "var func = symbol.fvalue;" *newline*
- "if (func === undefined) throw \"Function `\" + symbol.name + \"' is undefined.\";" *newline*
- "return func;" *newline*))
+ `(selfcall
+ (var (symbol ,x)
+ (func (get symbol "fvalue")))
+ (if (=== func undefined)
+ (throw (+ "Function `" (call |xstring| (get symbol "name")) "' is undefined.")))
+ (return func)))
(define-builtin symbol-plist (x)
- (code "((" x ").plist || " (ls-compile nil) ")"))
+ `(or (get ,x "plist") ,(convert nil)))
(define-builtin lambda-code (x)
- (code "(" x ").toString()"))
+ `(call |make_lisp_string| (call (get ,x "toString"))))
+
+(define-builtin eq (x y)
+ `(bool (=== ,x ,y)))
+
+(define-builtin char-code (x)
+ `(call |char_to_codepoint| ,x))
+
+(define-builtin code-char (x)
+ `(call |char_from_codepoint| ,x))
-(define-builtin eq (x y) (js!bool (code "(" x " === " y ")")))
-(define-builtin equal (x y) (js!bool (code "(" x " == " y ")")))
+(define-builtin characterp (x)
+ `(selfcall
+ (var (x ,x))
+ (return (bool
+ (and (== (typeof x) "string")
+ (or (== (get x "length") 1)
+ (== (get x "length") 2)))))))
-(define-builtin char-to-string (x)
- (type-check (("x" "number" x))
- "String.fromCharCode(x)"))
+(define-builtin char-upcase (x)
+ `(call |safe_char_upcase| ,x))
+
+(define-builtin char-downcase (x)
+ `(call |safe_char_downcase| ,x))
(define-builtin stringp (x)
- (js!bool (code "(typeof(" x ") == \"string\")")))
-
-(define-builtin string-upcase (x)
- (type-check (("x" "string" x))
- "x.toUpperCase()"))
-
-(define-builtin string-length (x)
- (type-check (("x" "string" x))
- "x.length"))
-
-(define-raw-builtin slice (string a &optional b)
- (js!selfcall
- "var str = " (ls-compile string) ";" *newline*
- "var a = " (ls-compile a) ";" *newline*
- "var b;" *newline*
- (when b (code "b = " (ls-compile b) ";" *newline*))
- "return str.slice(a,b);" *newline*))
-
-(define-builtin char (string index)
- (type-check (("string" "string" string)
- ("index" "number" index))
- "string.charCodeAt(index)"))
-
-(define-builtin concat-two (string1 string2)
- (type-check (("string1" "string" string1)
- ("string2" "string" string2))
- "string1.concat(string2)"))
+ `(selfcall
+ (var (x ,x))
+ (return (bool
+ (and (and (===(typeof x) "object")
+ (in "length" x))
+ (== (get x "stringp") 1))))))
(define-raw-builtin funcall (func &rest args)
- (js!selfcall
- "var f = " (ls-compile func) ";" *newline*
- "return (typeof f === 'function'? f: f.fvalue)("
- (join (cons (if *multiple-value-p* "values" "pv")
- (mapcar #'ls-compile args))
- ", ")
- ")"))
+ `(selfcall
+ (var (f ,(convert func)))
+ (return (call (if (=== (typeof f) "function")
+ f
+ (get f "fvalue"))
+ ,@(list* (if *multiple-value-p* '|values| '|pv|)
+ (length args)
+ (mapcar #'convert args))))))
(define-raw-builtin apply (func &rest args)
(if (null args)
- (code "(" (ls-compile func) ")()")
+ (convert func)
(let ((args (butlast args))
(last (car (last args))))
- (js!selfcall
- "var f = " (ls-compile func) ";" *newline*
- "var args = [" (join (cons (if *multiple-value-p* "values" "pv")
- (mapcar #'ls-compile args))
- ", ")
- "];" *newline*
- "var tail = (" (ls-compile last) ");" *newline*
- "while (tail != " (ls-compile nil) "){" *newline*
- " args.push(tail.car);" *newline*
- " tail = tail.cdr;" *newline*
- "}" *newline*
- "return (typeof f === 'function'? f : f.fvalue).apply(this, args);" *newline*))))
+ `(selfcall
+ (var (f ,(convert func)))
+ (var (args ,(list-to-vector
+ (list* (if *multiple-value-p* '|values| '|pv|)
+ (length args)
+ (mapcar #'convert args)))))
+ (var (tail ,(convert last)))
+ (while (!= tail ,(convert nil))
+ (call (get args "push") (get tail "car"))
+ (post++ (property args 1))
+ (= tail (get tail "cdr")))
+ (return (call (get (if (=== (typeof f) "function")
+ f
+ (get f "fvalue"))
+ "apply")
+ this
+ args))))))
(define-builtin js-eval (string)
- (type-check (("string" "string" string))
- (if *multiple-value-p*
- (js!selfcall
- "var v = eval.apply(window, [string]);" *newline*
- "if (typeof v !== 'object' || !('multiple-value' in v)){" *newline*
- (indent "v = [v];" *newline*
- "v['multiple-value'] = true;" *newline*)
- "}" *newline*
- "return values.apply(this, v);" *newline*)
- "eval.apply(window, [string])")))
-
-(define-builtin error (string)
- (js!selfcall "throw " string ";" *newline*))
-
-(define-builtin new () "{}")
+ (if *multiple-value-p*
+ `(selfcall
+ (var (v (call |globalEval| (call |xstring| ,string))))
+ (return (call (get |values| "apply") this (call |forcemv| v))))
+ `(call |globalEval| (call |xstring| ,string))))
-(define-builtin objectp (x)
- (js!bool (code "(typeof (" x ") === 'object')")))
+(define-builtin %throw (string)
+ `(selfcall (throw ,string)))
-(define-builtin oget (object key)
- (js!selfcall
- "var tmp = " "(" object ")[" key "];" *newline*
- "return tmp == undefined? " (ls-compile nil) ": tmp ;" *newline*))
+(define-builtin functionp (x)
+ `(bool (=== (typeof ,x) "function")))
-(define-builtin oset (object key value)
- (code "((" object ")[" key "] = " value ")"))
+(define-builtin %write-string (x)
+ `(call (get |lisp| "write") ,x))
-(define-builtin in (key object)
- (js!bool (code "((" key ") in (" object "))")))
+(define-builtin /debug (x)
+ `(call (get |console| "log") (call |xstring| ,x)))
-(define-builtin functionp (x)
- (js!bool (code "(typeof " x " == 'function')")))
-
-(define-builtin write-string (x)
- (type-check (("x" "string" x))
- "lisp.write(x)"))
-
-(define-builtin make-array (n)
- (js!selfcall
- "var r = [];" *newline*
- "for (var i = 0; i < " n "; i++)" *newline*
- (indent "r.push(" (ls-compile nil) ");" *newline*)
- "return r;" *newline*))
-
-(define-builtin arrayp (x)
- (js!bool
- (js!selfcall
- "var x = " x ";" *newline*
- "return typeof x === 'object' && 'length' in x;")))
-
-(define-builtin aref (array n)
- (js!selfcall
- "var x = " "(" array ")[" n "];" *newline*
- "if (x === undefined) throw 'Out of range';" *newline*
- "return x;" *newline*))
-
-(define-builtin aset (array n value)
- (js!selfcall
- "var x = " array ";" *newline*
- "var i = " n ";" *newline*
- "if (i < 0 || i >= x.length) throw 'Out of range';" *newline*
- "return x[i] = " value ";" *newline*))
+
+;;; Storage vectors. They are used to implement arrays and (in the
+;;; future) structures.
+
+(define-builtin storage-vector-p (x)
+ `(selfcall
+ (var (x ,x))
+ (return (bool (and (=== (typeof x) "object") (in "length" x))))))
+
+(define-builtin make-storage-vector (n)
+ `(selfcall
+ (var (r #()))
+ (= (get r "length") ,n)
+ (return r)))
+
+(define-builtin storage-vector-size (x)
+ `(get ,x "length"))
+
+(define-builtin resize-storage-vector (vector new-size)
+ `(= (get ,vector "length") ,new-size))
+
+(define-builtin storage-vector-ref (vector n)
+ `(selfcall
+ (var (x (property ,vector ,n)))
+ (if (=== x undefined) (throw "Out of range."))
+ (return x)))
+
+(define-builtin storage-vector-set (vector n value)
+ `(selfcall
+ (var (x ,vector))
+ (var (i ,n))
+ (if (or (< i 0) (>= i (get x "length")))
+ (throw "Out of range."))
+ (return (= (property x i) ,value))))
+
+(define-builtin concatenate-storage-vector (sv1 sv2)
+ `(selfcall
+ (var (sv1 ,sv1))
+ (var (r (call (get sv1 "concat") ,sv2)))
+ (= (get r "type") (get sv1 "type"))
+ (= (get r "stringp") (get sv1 "stringp"))
+ (return r)))
(define-builtin get-internal-real-time ()
- "(new Date()).getTime()")
+ `(call (get (new (call |Date|)) "getTime")))
(define-builtin values-array (array)
(if *multiple-value-p*
- (code "values.apply(this, " array ")")
- (code "pv.apply(this, " array ")")))
+ `(call (get |values| "apply") this ,array)
+ `(call (get |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) ", ") ")")))
-
-;; Receives the JS function as first argument as a literal string. The
-;; second argument is compiled and should evaluate to a vector of
-;; values to apply to the the function. The result returned.
-(define-builtin %js-call (fun args)
- (code fun ".apply(this, " args ")"))
-
-(defun macro (x)
- (and (symbolp x)
- (let ((b (lookup-in-lexenv x *environment* 'function)))
- (if (and b (eq (binding-type b) 'macro))
- b
- nil))))
-
-#+common-lisp
+ `(call |values| ,@(mapcar #'convert args))
+ `(call |pv| ,@(mapcar #'convert args))))
+
+;;; Javascript FFI
+
+(define-builtin new ()
+ '(object))
+
+(define-raw-builtin oget* (object key &rest keys)
+ `(selfcall
+ (progn
+ (var (tmp (property ,(convert object) (call |xstring| ,(convert key)))))
+ ,@(mapcar (lambda (key)
+ `(progn
+ (if (=== tmp undefined) (return ,(convert nil)))
+ (= tmp (property tmp (call |xstring| ,(convert key))))))
+ keys))
+ (return (if (=== tmp undefined) ,(convert nil) tmp))))
+
+(define-raw-builtin oset* (value object key &rest keys)
+ (let ((keys (cons key keys)))
+ `(selfcall
+ (progn
+ (var (obj ,(convert object)))
+ ,@(mapcar (lambda (key)
+ `(progn
+ (= obj (property obj (call |xstring| ,(convert key))))
+ (if (=== object undefined)
+ (throw "Impossible to set object property."))))
+ (butlast keys))
+ (var (tmp
+ (= (property obj (call |xstring| ,(convert (car (last keys)))))
+ ,(convert value))))
+ (return (if (=== tmp undefined)
+ ,(convert nil)
+ tmp))))))
+
+(define-raw-builtin oget (object key &rest keys)
+ `(call |js_to_lisp| ,(convert `(oget* ,object ,key ,@keys))))
+
+(define-raw-builtin oset (value object key &rest keys)
+ (convert `(oset* (lisp-to-js ,value) ,object ,key ,@keys)))
+
+(define-builtin objectp (x)
+ `(bool (=== (typeof ,x) "object")))
+
+(define-builtin lisp-to-js (x) `(call |lisp_to_js| ,x))
+(define-builtin js-to-lisp (x) `(call |js_to_lisp| ,x))
+
+
+(define-builtin in (key object)
+ `(bool (in (call |xstring| ,key) ,object)))
+
+(define-builtin map-for-in (function object)
+ `(selfcall
+ (var (f ,function)
+ (g (if (=== (typeof f) "function") f (get f "fvalue")))
+ (o ,object))
+ (for-in (key o)
+ (call g ,(if *multiple-value-p* '|values| '|pv|) 1 (get o "key")))
+ (return ,(convert nil))))
+
+(define-compilation %js-vref (var)
+ `(call |js_to_lisp| ,(make-symbol var)))
+
+(define-compilation %js-vset (var val)
+ `(= ,(make-symbol var) (call |lisp_to_js| ,(convert val))))
+
+(define-setf-expander %js-vref (var)
+ (let ((new-value (gensym)))
+ (unless (stringp var)
+ (error "`~S' is not a string." var))
+ (values nil
+ (list var)
+ (list new-value)
+ `(%js-vset ,var ,new-value)
+ `(%js-vref ,var))))
+
+
+#-jscl
(defvar *macroexpander-cache*
(make-hash-table :test #'eq))
-(defun ls-macroexpand-1 (form)
+(defun !macro-function (symbol)
+ (unless (symbolp symbol)
+ (error "`~S' is not a symbol." symbol))
+ (let ((b (lookup-in-lexenv symbol *environment* 'function)))
+ (if (and b (eq (binding-type b) 'macro))
+ (let ((expander (binding-value b)))
+ (cond
+ #-jscl
+ ((gethash b *macroexpander-cache*)
+ (setq expander (gethash b *macroexpander-cache*)))
+ ((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.
+ ;;
+ #+jscl (setf (binding-value b) compiled)
+ #-jscl (setf (gethash b *macroexpander-cache*) compiled)
+ (setq expander compiled))))
+ expander)
+ nil)))
+
+(defun !macroexpand-1 (form)
(cond
((symbolp form)
(let ((b (lookup-in-lexenv form *environment* 'variable)))
(if (and b (eq (binding-type b) 'macro))
(values (binding-value b) t)
(values form nil))))
- ((consp form)
- (let ((macro-binding (macro (car form))))
- (if macro-binding
- (let ((expander (binding-value macro-binding)))
- (cond
- #+common-lisp
- ((gethash macro-binding *macroexpander-cache*)
- (setq expander (gethash macro-binding *macroexpander-cache*)))
- ((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.
- ;;
- #+jscl (setf (binding-value macro-binding) compiled)
- #+common-lisp (setf (gethash macro-binding *macroexpander-cache*) compiled)
- (setq expander compiled))))
- (values (apply expander (cdr form)) t))
+ ((and (consp form) (symbolp (car form)))
+ (let ((macrofun (!macro-function (car form))))
+ (if macrofun
+ (values (funcall macrofun (cdr form)) t)
(values form nil))))
(t
(values form nil))))
(defun compile-funcall (function args)
- (let* ((values-funcs (if *multiple-value-p* "values" "pv"))
- (arglist (concat "(" (join (cons values-funcs (mapcar #'ls-compile args)) ", ") ")")))
+ (let* ((arglist (list* (if *multiple-value-p* '|values| '|pv|)
+ (length args)
+ (mapcar #'convert args))))
(unless (or (symbolp function)
(and (consp function)
- (eq (car function) 'lambda)))
- (error "Bad function"))
+ (member (car function) '(lambda oget))))
+ (error "Bad function designator `~S'" function))
(cond
((translate-function function)
- (concat (translate-function function) arglist))
+ `(call ,(make-symbol (translate-function function)) ,@arglist))
((and (symbolp function)
#+jscl (eq (symbol-package function) (find-package "COMMON-LISP"))
- #+common-lisp t)
- (code (ls-compile `',function) ".fvalue" arglist))
+ #-jscl t)
+ `(call (get ,(convert `',function) "fvalue") ,@arglist))
+ #+jscl((symbolp function)
+ `(call ,(convert `#',function) ,@arglist))
+ ((and (consp function) (eq (car function) 'lambda))
+ `(call ,(convert `#',function) ,@arglist))
+ ((and (consp function) (eq (car function) 'oget))
+ `(call ,(convert function) ,@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)
- (multiple-value-bind (sexp expandedp) (ls-macroexpand-1 sexp)
+ (error "Bad function descriptor")))))
+
+(defun convert-block (sexps &optional return-last-p decls-allowed-p)
+ (multiple-value-bind (sexps decls)
+ (parse-body sexps :declarations decls-allowed-p)
+ (declare (ignore decls))
+ (if return-last-p
+ `(progn
+ ,@(mapcar #'convert (butlast sexps))
+ (return ,(convert (car (last sexps)) *multiple-value-p*)))
+ `(progn ,@(mapcar #'convert sexps)))))
+
+(defun convert* (sexp &optional multiple-value-p)
+ (multiple-value-bind (sexp expandedp) (!macroexpand-1 sexp)
(when expandedp
- (return-from ls-compile (ls-compile sexp multiple-value-p)))
+ (return-from convert* (convert sexp multiple-value-p)))
;; The expression has been macroexpanded. Now compile it!
(let ((*multiple-value-p* multiple-value-p))
(cond
(let ((b (lookup-in-lexenv sexp *environment* 'variable)))
(cond
((and b (not (member 'special (binding-declarations b))))
- (binding-value b))
+ (make-symbol (binding-value b)))
((or (keywordp sexp)
(and b (member 'constant (binding-declarations b))))
- (code (ls-compile `',sexp) ".value"))
+ `(get ,(convert `',sexp) "value"))
(t
- (ls-compile `(symbol-value ',sexp))))))
- ((integerp sexp) (integer-to-string sexp))
- ((floatp sexp) (float-to-string sexp))
- ((stringp sexp) (code "\"" (escape-string sexp) "\""))
- ((arrayp sexp) (literal sexp))
+ (convert `(symbol-value ',sexp))))))
+ ((or (integerp sexp) (floatp sexp) (characterp sexp) (stringp sexp) (arrayp sexp))
+ (literal sexp))
((listp sexp)
(let ((name (car sexp))
(args (cdr sexp)))
(t
(compile-funcall name args)))))
(t
- (error (concat "How should I compile " (prin1-to-string sexp) "?")))))))
+ (error "How should I compile `~S'?" sexp))))))
+
+(defun convert (sexp &optional multiple-value-p)
+ (convert* sexp multiple-value-p))
(defvar *compile-print-toplevels* nil)
(min width (length string)))))
(subseq string 0 n)))
-(defun ls-compile-toplevel (sexp &optional multiple-value-p)
+(defun convert-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))))
+ ;; Non-empty toplevel progn
+ ((and (consp sexp)
+ (eq (car sexp) 'progn)
+ (cdr sexp))
+ `(progn
+ ,@(mapcar (lambda (s) (convert-toplevel s t))
+ (cdr sexp))))
(t
(when *compile-print-toplevels*
(let ((form-string (prin1-to-string sexp)))
- (write-string "Compiling ")
- (write-string (truncate-string form-string))
- (write-line "...")))
-
- (let ((code (ls-compile sexp multiple-value-p)))
- (code (join-trailing (get-toplevel-compilations)
- (code ";" *newline*))
- (when code
- (code code ";" *newline*))))))))
+ (format t "Compiling ~a..." (truncate-string form-string))))
+ (let ((code (convert sexp multiple-value-p)))
+ `(progn
+ ,@(get-toplevel-compilations)
+ ,code))))))
+
+(defun compile-toplevel (sexp &optional multiple-value-p)
+ (with-output-to-string (*standard-output*)
+ (js (convert-toplevel sexp multiple-value-p))))
projects / jscl.git / blobdiff