;;; language to the compiler to be able to run.
#+ecmalisp
+(js-eval "function pv (x) { return x; }")
+#+ecmalisp
+(js-eval "var values = pv;")
+
+#+ecmalisp
(progn
(eval-when-compile
(%compile-defmacro 'defmacro
args)
,@body))))))
+ (defmacro declaim (&rest decls)
+ `(eval-when-compile
+ ,@(mapcar (lambda (decl) `(!proclaim ',decl)) decls)))
+
+ (declaim (constant nil t) (special t nil))
(setq nil 'nil)
(setq t 't)
(defmacro defvar (name value &optional docstring)
`(progn
- (unless (boundp ',name)
- (setq ,name ,value))
+ (declaim (special ,name))
+ (unless (boundp ',name) (setq ,name ,value))
,@(when (stringp docstring) `((oset ',name "vardoc" ,docstring)))
',name))
(defmacro defun (name args &rest body)
`(progn
+ (declaim (non-overridable ,name))
(fset ',name
(named-lambda ,(symbol-name name) ,args
- ,@(when (stringp (car body)) `(,(car body)))
- (block ,name
- ,@(if (stringp (car body))
- (cdr body)
- body))))
+ ,@(if (and (stringp (car body)) (not (null (cdr body))))
+ `(,(car body) (block ,name ,@(cdr body)))
+ `((block ,name ,@body)))))
',name))
- (defvar *package* (new))
-
(defun null (x)
(eq x nil))
(defmacro while (condition &body body)
`(block nil (%while ,condition ,@body)))
- (defun internp (name)
- (in name *package*))
-
- (defun intern (name)
- (if (internp name)
- (oget *package* name)
- (oset *package* name (make-symbol name))))
-
- (defun find-symbol (name)
- (oget *package* name))
-
(defvar *gensym-counter* 0)
(defun gensym (&optional (prefix "G"))
(setq *gensym-counter* (+ *gensym-counter* 1))
;; Basic functions
(defun = (x y) (= x y))
- (defun + (x y) (+ x y))
- (defun - (x y) (- x y))
(defun * (x y) (* x y))
(defun / (x y) (/ x y))
(defun 1+ (x) (+ x 1))
`(prog1 (progn ,form1 ,result) ,@body)))
-
;;; This couple of helper functions will be defined in both Common
;;; Lisp and in Ecmalisp.
(defun ensure-list (x)
;;; constructions.
#+ecmalisp
(progn
+ (defun + (&rest args)
+ (let ((r 0))
+ (dolist (x args r)
+ (incf r x))))
+
+ (defun - (x &rest others)
+ (if (null others)
+ (- x)
+ (let ((r x))
+ (dolist (y others r)
+ (decf r y)))))
+
(defun append-two (list1 list2)
(if (null list1)
list2
(defun reverse (list)
(revappend list '()))
+ (defmacro psetq (&rest pairs)
+ (let ( ;; For each pair, we store here a list of the form
+ ;; (VARIABLE GENSYM VALUE).
+ (assignments '()))
+ (while t
+ (cond
+ ((null pairs) (return))
+ ((null (cdr pairs))
+ (error "Odd paris in PSETQ"))
+ (t
+ (let ((variable (car pairs))
+ (value (cadr pairs)))
+ (push `(,variable ,(gensym) ,value) assignments)
+ (setq pairs (cddr pairs))))))
+ (setq assignments (reverse assignments))
+ ;;
+ `(let ,(mapcar #'cdr assignments)
+ (setq ,@(!reduce #'append (mapcar #'butlast assignments) '())))))
+
(defun list-length (list)
(let ((l 0))
(while (not (null list))
l))
(defun length (seq)
- (if (stringp seq)
- (string-length seq)
- (list-length seq)))
+ (cond
+ ((stringp seq)
+ (string-length seq))
+ ((arrayp seq)
+ (oget seq "length"))
+ ((listp seq)
+ (list-length seq))))
(defun concat-two (s1 s2)
(concat-two s1 s2))
(setq alist (cdr alist))))
(car alist))
+ (defun string (x)
+ (cond ((stringp x) x)
+ ((symbolp x) (symbol-name x))
+ (t (char-to-string x))))
+
(defun string= (s1 s2)
(equal s1 s2))
(unless (symbolp x)
(error "Wrong argument type! it should be a symbol"))
(oget x "vardoc"))))
- )
+
+ ;; Packages
+
+ (defvar *package-list* nil)
+
+ (defun list-all-packages ()
+ *package-list*)
+
+ (defun make-package (name &optional use)
+ (let ((package (new))
+ (use (mapcar #'find-package-or-fail use)))
+ (oset package "packageName" name)
+ (oset package "symbols" (new))
+ (oset package "exports" (new))
+ (oset package "use" use)
+ (push package *package-list*)
+ package))
+
+ (defun packagep (x)
+ (and (objectp x) (in "symbols" x)))
+
+ (defun find-package (package-designator)
+ (when (packagep package-designator)
+ (return-from find-package package-designator))
+ (let ((name (string package-designator)))
+ (dolist (package *package-list*)
+ (when (string= (package-name package) name)
+ (return package)))))
+
+ (defun find-package-or-fail (package-designator)
+ (or (find-package package-designator)
+ (error "Package unknown.")))
+
+ (defun package-name (package-designator)
+ (let ((package (find-package-or-fail package-designator)))
+ (oget package "packageName")))
+
+ (defun %package-symbols (package-designator)
+ (let ((package (find-package-or-fail package-designator)))
+ (oget package "symbols")))
+
+ (defun package-use-list (package-designator)
+ (let ((package (find-package-or-fail package-designator)))
+ (oget package "use")))
+
+ (defun %package-external-symbols (package-designator)
+ (let ((package (find-package-or-fail package-designator)))
+ (oget package "exports")))
+
+ (defvar *common-lisp-package*
+ (make-package "CL"))
+
+ (defvar *user-package*
+ (make-package "CL-USER" (list *common-lisp-package*)))
+
+ (defvar *keyword-package*
+ (make-package "KEYWORD"))
+
+ (defun keywordp (x)
+ (and (symbolp x) (eq (symbol-package x) *keyword-package*)))
+
+ (defvar *package* *common-lisp-package*)
+
+ (defmacro in-package (package-designator)
+ `(eval-when-compile
+ (setq *package* (find-package-or-fail ,package-designator))))
+
+ ;; This function is used internally to initialize the CL package
+ ;; with the symbols built during bootstrap.
+ (defun %intern-symbol (symbol)
+ (let ((symbols (%package-symbols *common-lisp-package*)))
+ (oset symbol "package" *common-lisp-package*)
+ (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)))
+
+ (defun intern (name &optional (package *package*))
+ (let ((package (find-package-or-fail package)))
+ (let ((result (%find-symbol name package)))
+ (if (cdr result)
+ (car result)
+ (let ((symbols (%package-symbols package)))
+ (oget symbols name)
+ (let ((symbol (make-symbol name)))
+ (oset symbol "package" package)
+ (when (eq package *keyword-package*)
+ (oset symbol "value" symbol)
+ (export (list symbol) package))
+ (oset symbols name symbol)))))))
+
+ (defun symbol-package (symbol)
+ (unless (symbolp symbol)
+ (error "it is not a symbol"))
+ (oget symbol "package"))
+
+ (defun export (symbols &optional (package *package*))
+ (let ((exports (%package-external-symbols package)))
+ (dolist (symb symbols t)
+ (oset exports (symbol-name symb) symb))))
+
+ (defun get-universal-time ()
+ (+ (get-unix-time) 2208988800)))
+
;;; The compiler offers some primitives and special forms which are
;;; not found in Common Lisp, for instance, while. So, we grow Common
(defun setcar (cons new)
(setf (car cons) new))
(defun setcdr (cons new)
- (setf (cdr cons) new)))
+ (setf (cdr cons) new))
+
+ (defun aset (array idx value)
+ (setf (aref array idx) value)))
;;; At this point, no matter if Common Lisp or ecmalisp is compiling
;;; from here, this code will compile on both. We define some helper
(defun mapconcat (func list)
(join (mapcar func list)))
+(defun vector-to-list (vector)
+ (let ((list nil)
+ (size (length vector)))
+ (dotimes (i size (reverse list))
+ (push (aref vector i) list))))
+
+(defun list-to-vector (list)
+ (let ((v (make-array (length list)))
+ (i 0))
+ (dolist (x list v)
+ (aset v i x)
+ (incf i))))
+
+#+ecmalisp
+(progn
+ (defun values-list (list)
+ (values-array (list-to-vector list)))
+
+ (defun values (&rest args)
+ (values-list args)))
+
+
;;; Like CONCAT, but prefix each line with four spaces. Two versions
;;; of this function are available, because the Ecmalisp version is
;;; very slow and bootstraping was annoying.
(progn
(defun prin1-to-string (form)
(cond
- ((symbolp form) (symbol-name form))
+ ((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))))
((integerp form) (integer-to-string form))
((stringp form) (concat "\"" (escape-string form) "\""))
((functionp form)
(if (null (cdr last))
(prin1-to-string (car last))
(concat (prin1-to-string (car last)) " . " (prin1-to-string (cdr last)))))
- ")"))))
+ ")"))
+ ((arrayp form)
+ (concat "#" (prin1-to-string (vector-to-list form))))
+ ((packagep form)
+ (concat "#<PACKAGE " (package-name form) ">"))))
(defun write-line (x)
(write-string x)
(ecase (%read-char stream)
(#\'
(list 'function (ls-read stream)))
+ (#\( (list-to-vector (%read-list stream)))
+ (#\: (make-symbol (string-upcase (read-until stream #'terminalp))))
(#\\
(let ((cname
(concat (string (%read-char stream))
(t
(error "Unknown reader form.")))))))
-(defvar *eof* (make-symbol "EOF"))
+;;; Parse a string of the form NAME, PACKAGE:NAME or
+;;; PACKAGE::NAME and return the name. If the string is of the
+;;; form 1) or 3), but the symbol does not exist, it will be created
+;;; and interned in that package.
+(defun read-symbol (string)
+ (let ((size (length string))
+ package name internalp index)
+ (setq index 0)
+ (while (and (< index size)
+ (not (char= (char string index) #\:)))
+ (incf index))
+ (cond
+ ;; No package prefix
+ ((= index size)
+ (setq name string)
+ (setq package *package*)
+ (setq internalp t))
+ (t
+ ;; Package prefix
+ (if (zerop index)
+ (setq package "KEYWORD")
+ (setq package (string-upcase (subseq string 0 index))))
+ (incf index)
+ (when (char= (char string index) #\:)
+ (setq internalp t)
+ (incf index))
+ (setq name (subseq string index))))
+ ;; Canonalize symbol name and package
+ (setq name (string-upcase name))
+ (setq package (find-package package))
+ ;; TODO: PACKAGE:SYMBOL should signal error if SYMBOL is not an
+ ;; external symbol from PACKAGE.
+ (if (or internalp (eq package (find-package "KEYWORD")))
+ (intern name package)
+ (find-symbol name package))))
+
+(defvar *eof* (gensym))
(defun ls-read (stream)
(skip-whitespaces-and-comments stream)
(let ((ch (%peek-char stream)))
(cond
- ((null ch)
+ ((or (null ch) (char= ch #\)))
*eof*)
((char= ch #\()
(%read-char stream)
(let ((string (read-until stream #'terminalp)))
(if (every #'digit-char-p string)
(parse-integer string)
- (intern (string-upcase string))))))))
+ (read-symbol string)))))))
(defun ls-read-from-string (string)
(ls-read (make-string-stream string)))
;;; too. The respective real functions are defined in the target (see
;;; the beginning of this file) as well as some primitive functions.
+(defvar *multiple-value-p* nil)
+
(defvar *compilation-unit-checks* '())
-(defun make-binding (name type translation declared)
- (list name type translation declared))
+(defun make-binding (name type value &optional declarations)
+ (list name type value declarations))
(defun binding-name (b) (first b))
(defun binding-type (b) (second b))
(defun binding-value (b) (third b))
+(defun binding-declarations (b) (fourth b))
+
(defun set-binding-value (b value)
- (setcar (cdr (cdr b)) value))
+ (setcar (cddr b) value))
+
+(defun set-binding-declarations (b value)
+ (setcar (cdddr b) value))
+
+(defun push-binding-declaration (decl b)
+ (set-binding-declarations b (cons decl (binding-declarations b))))
-(defun binding-declared (b)
- (and b (fourth b)))
-(defun mark-binding-as-declared (b)
- (setcar (cdddr b) t))
(defun make-lexenv ()
(list nil nil nil nil))
(block (third lexenv))
(gotag (fourth lexenv)))))
-(defvar *global-environment* (make-lexenv))
(defvar *environment* (make-lexenv))
-(defun clear-undeclared-global-bindings ()
- (setq *environment*
- (mapcar (lambda (namespace)
- (remove-if-not #'binding-declared namespace))
- *environment*)))
-
-
(defvar *variable-counter* 0)
(defun gvarname (symbol)
(concat "v" (integer-to-string (incf *variable-counter*))))
(defun extend-local-env (args)
(let ((new (copy-lexenv *environment*)))
(dolist (symbol args new)
- (let ((b (make-binding symbol 'lexical-variable (gvarname symbol) t)))
+ (let ((b (make-binding symbol 'lexical-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 t) *environment* 'function))
+ (push-to-lexenv (make-binding name 'macro lambda) *environment* 'function))
+
+(defun global-binding (name type namespace)
+ (or (lookup-in-lexenv name *environment* namespace)
+ (let ((b (make-binding name type nil)))
+ (push-to-lexenv b *environment* namespace)
+ b)))
+
+(defun claimp (symbol namespace claim)
+ (let ((b (lookup-in-lexenv symbol *environment* namespace)))
+ (and b (member claim (binding-declarations b)))))
+
+(defun !proclaim (decl)
+ (case (car decl)
+ (special
+ (dolist (name (cdr decl))
+ (let ((b (global-binding name 'variable 'variable)))
+ (push-binding-declaration 'special b))))
+ (notinline
+ (dolist (name (cdr decl))
+ (let ((b (global-binding name 'function 'function)))
+ (push-binding-declaration 'notinline b))))
+ (constant
+ (dolist (name (cdr decl))
+ (let ((b (global-binding name 'variable 'variable)))
+ (push-binding-declaration 'constant b))))
+ (non-overridable
+ (dolist (name (cdr decl))
+ (let ((b (global-binding name 'function 'function)))
+ (push-binding-declaration 'non-overridable b))))))
-(defvar *compilations* nil)
+#+ecmalisp
+(fset 'proclaim #'!proclaim)
-(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))) ";")
- (join-trailing
- (remove-if #'null-or-empty-p (mapcar #'ls-compile sexps))
- (concat ";" *newline*))))
+;;; Special forms
+
+(defvar *compilations* nil)
(defmacro define-compilation (name args &body body)
;; Creates a new primitive `name' with parameters args and
(define-compilation if (condition true false)
(concat "(" (ls-compile condition) " !== " (ls-compile nil)
- " ? " (ls-compile true)
- " : " (ls-compile false)
+ " ? " (ls-compile true *multiple-value-p*)
+ " : " (ls-compile false *multiple-value-p*)
")"))
(defvar *lambda-list-keywords* '(&optional &rest))
(defun lambda-docstring-wrapper (docstring &rest strs)
(if docstring
(js!selfcall
- "var func = " (reduce #'concat strs) ";" *newline*
+ "var func = " (join strs) ";" *newline*
"func.docstring = '" docstring "';" *newline*
"return func;" *newline*)
- (reduce #'concat strs)))
+ (join strs)))
+
(define-compilation lambda (lambda-list &rest body)
(let ((required-arguments (lambda-list-required-arguments lambda-list))
(lambda-docstring-wrapper
documentation
"(function ("
- (join (mapcar #'translate-variable
- (append required-arguments optional-arguments))
+ (join (cons "values"
+ (mapcar #'translate-variable
+ (append required-arguments optional-arguments)))
",")
"){" *newline*
;; Check number of arguments
(indent
(if required-arguments
- (concat "if (arguments.length < " (integer-to-string n-required-arguments)
+ (concat "if (arguments.length < " (integer-to-string (1+ n-required-arguments))
") throw 'too few arguments';" *newline*)
"")
(if (not rest-argument)
(concat "if (arguments.length > "
- (integer-to-string (+ n-required-arguments n-optional-arguments))
+ (integer-to-string (+ 1 n-required-arguments n-optional-arguments))
") throw 'too many arguments';" *newline*)
"")
;; Optional arguments
(if optional-arguments
- (concat "switch(arguments.length){" *newline*
+ (concat "switch(arguments.length-1){" *newline*
(let ((optional-and-defaults
(lambda-list-optional-arguments-with-default lambda-list))
(cases nil)
(let ((js!rest (translate-variable rest-argument)))
(concat "var " js!rest "= " (ls-compile nil) ";" *newline*
"for (var i = arguments.length-1; i>="
- (integer-to-string (+ n-required-arguments n-optional-arguments))
+ (integer-to-string (+ 1 n-required-arguments n-optional-arguments))
"; i--)" *newline*
(indent js!rest " = "
"{car: arguments[i], cdr: ") js!rest "};"
(ls-compile-block body t)) *newline*
"})"))))
-(define-compilation setq (var val)
+
+(defun setq-pair (var val)
(let ((b (lookup-in-lexenv var *environment* 'variable)))
(if (eq (binding-type b) 'lexical-variable)
(concat (binding-value b) " = " (ls-compile val))
(ls-compile `(set ',var ,val)))))
+(define-compilation setq (&rest pairs)
+ (let ((result ""))
+ (while t
+ (cond
+ ((null pairs) (return))
+ ((null (cdr pairs))
+ (error "Odd paris in SETQ"))
+ (t
+ (concatf result
+ (concat (setq-pair (car pairs) (cadr pairs))
+ (if (null (cddr pairs)) "" ", ")))
+ (setq pairs (cddr pairs)))))
+ (concat "(" result ")")))
+
;;; FFI Variable accessors
(define-compilation js-vref (var)
var)
(concat "(" var " = " (ls-compile val) ")"))
+
;;; Literals
(defun escape-string (string)
(let ((output "")
(or (cdr (assoc sexp *literal-symbols*))
(let ((v (genlit))
(s #+common-lisp (concat "{name: \"" (escape-string (symbol-name sexp)) "\"}")
- #+ecmalisp (ls-compile `(intern ,(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)))
c
(let ((v (genlit)))
(toplevel-compilation (concat "var " v " = " c))
- v))))))
+ v))))
+ ((arrayp sexp)
+ (let ((elements (vector-to-list sexp)))
+ (let ((c (concat "[" (join (mapcar #'literal elements) ", ") "]")))
+ (if recursive
+ c
+ (let ((v (genlit)))
+ (toplevel-compilation (concat "var " v " = " c))
+ v)))))))
(define-compilation quote (sexp)
(literal sexp))
(define-compilation progn (&rest body)
(js!selfcall (ls-compile-block body t)))
-(defun dynamic-binding-wrapper (bindings body)
- (if (null bindings)
- body
- (concat
- "try {" *newline*
- (indent
- "var tmp;" *newline*
- (join
- (mapcar (lambda (b)
+(defun special-variable-p (x)
+ (and (claimp x 'variable 'special) t))
+
+;;; Wrap CODE to restore the symbol values of the dynamic
+;;; bindings. BINDINGS is a list of pairs of the form
+;;; (SYMBOL . PLACE), where PLACE is a Javascript variable
+;;; name to initialize the symbol value and where to stored
+;;; the old value.
+(defun let-binding-wrapper (bindings body)
+ (when (null bindings)
+ (return-from let-binding-wrapper body))
+ (concat
+ "try {" *newline*
+ (indent "var tmp;" *newline*
+ (mapconcat
+ (lambda (b)
+ (let ((s (ls-compile `(quote ,(car b)))))
+ (concat "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)))))
+ (concat s ".value" " = " (cdr b) ";" *newline*)))
+ bindings))
+ "}" *newline*))
+
+(define-compilation let (bindings &rest body)
+ (let* ((bindings (mapcar #'ensure-list bindings))
+ (variables (mapcar #'first bindings))
+ (cvalues (mapcar #'ls-compile (mapcar #'second bindings)))
+ (*environment* (extend-local-env (remove-if #'special-variable-p variables)))
+ (dynamic-bindings))
+ (concat "(function("
+ (join (mapcar (lambda (x)
+ (if (special-variable-p x)
+ (let ((v (gvarname x)))
+ (push (cons x v) dynamic-bindings)
+ v)
+ (translate-variable x)))
+ variables)
+ ",")
+ "){" *newline*
+ (let ((body (ls-compile-block body t)))
+ (indent (let-binding-wrapper dynamic-bindings body)))
+ "})(" (join cvalues ",") ")")))
+
+
+;;; Return the code to initialize BINDING, and push it extending the
+;;; current lexical environment if the variable is special.
+(defun let*-initialize-value (binding)
+ (let ((var (first binding))
+ (value (second binding)))
+ (if (special-variable-p var)
+ (concat (ls-compile `(setq ,var ,value)) ";" *newline*)
+ (let* ((v (gvarname var))
+ (b (make-binding var 'variable v)))
+ (prog1 (concat "var " v " = " (ls-compile value) ";" *newline*)
+ (push-to-lexenv b *environment* 'variable))))))
+
+;;; Wrap BODY to restore the symbol values of SYMBOLS after body. It
+;;; DOES NOT generate code to initialize the value of the symbols,
+;;; unlike let-binding-wrapper.
+(defun let*-binding-wrapper (symbols body)
+ (when (null symbols)
+ (return-from let*-binding-wrapper body))
+ (let ((store (mapcar (lambda (s) (cons s (gvarname s)))
+ (remove-if-not #'special-variable-p symbols))))
+ (concat
+ "try {" *newline*
+ (indent
+ (mapconcat (lambda (b)
(let ((s (ls-compile `(quote ,(car b)))))
- (concat "tmp = " s ".value;" *newline*
- s ".value = " (cdr b) ";" *newline*
- (cdr b) " = tmp;" *newline*)))
- bindings))
- body)
- "}" *newline*
- "finally {" *newline*
- (indent
- (join-trailing
- (mapcar (lambda (b)
+ (concat "var " (cdr b) " = " s ".value;" *newline*)))
+ store)
+ body)
+ "}" *newline*
+ "finally {" *newline*
+ (indent
+ (mapconcat (lambda (b)
(let ((s (ls-compile `(quote ,(car b)))))
- (concat s ".value" " = " (cdr b))))
- bindings)
- (concat ";" *newline*)))
- "}" *newline*)))
+ (concat s ".value" " = " (cdr b) ";" *newline*)))
+ store))
+ "}" *newline*)))
-(define-compilation let (bindings &rest body)
- (let ((bindings (mapcar #'ensure-list bindings)))
- (let ((variables (mapcar #'first bindings))
- (values (mapcar #'second bindings)))
- (let ((cvalues (mapcar #'ls-compile values))
- (*environment* (extend-local-env (remove-if #'boundp variables)))
- (dynamic-bindings))
- (concat "(function("
- (join (mapcar (lambda (x)
- (if (boundp 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 (dynamic-binding-wrapper dynamic-bindings body)))
- "})(" (join cvalues ",") ")")))))
+(define-compilation let* (bindings &rest body)
+ (let ((bindings (mapcar #'ensure-list bindings))
+ (*environment* (copy-lexenv *environment*)))
+ (js!selfcall
+ (let ((specials (remove-if-not #'special-variable-p (mapcar #'first bindings)))
+ (body (concat (mapconcat #'let*-initialize-value bindings)
+ (ls-compile-block body t))))
+ (let*-binding-wrapper specials body)))))
(defvar *block-counter* 0)
(define-compilation block (name &rest body)
(let ((tr (integer-to-string (incf *block-counter*))))
- (let ((b (make-binding name 'block tr t)))
+ (let ((b (make-binding name 'block tr)))
(js!selfcall
"try {" *newline*
(let ((*environment* (extend-lexenv (list b) *environment* 'block)))
" throw cf;" *newline*
"}" *newline*))
-(define-compilation throw (id &optional value)
+(define-compilation throw (id value)
(js!selfcall
"throw ({"
"type: 'catch', "
(let ((bindings
(mapcar (lambda (label)
(let ((tagidx (integer-to-string (incf *go-tag-counter*))))
- (make-binding label 'gotag (list tbidx tagidx) t)))
+ (make-binding label 'gotag (list tbidx tagidx))))
(remove-if-not #'go-tag-p body))))
(extend-lexenv bindings *environment* 'gotag)))
"})" *newline*)
(error (concat "Unknown tag `" n "'.")))))
-
(define-compilation unwind-protect (form &rest clean-up)
(js!selfcall
"var ret = " (ls-compile nil) ";" *newline*
"}" *newline*
"return ret;" *newline*))
+(define-compilation multiple-value-call (func-form &rest forms)
+ (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 vs;" *newline*
+ (mapconcat (lambda (form)
+ (concat "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*)))
+
+
;;; A little backquote implementation without optimizations of any
;;; kind for ecmalisp.
;;; Primitives
+(defvar *builtins* nil)
+
+(defmacro define-raw-builtin (name args &body body)
+ ;; Creates a new primitive function `name' with parameters args and
+ ;; @body. The body can access to the local environment through the
+ ;; variable *ENVIRONMENT*.
+ `(push (list ',name (lambda ,args (block ,name ,@body)))
+ *builtins*))
+
(defmacro define-builtin (name args &body body)
`(progn
- (define-compilation ,name ,args
+ (define-raw-builtin ,name ,args
(let ,(mapcar (lambda (arg) `(,arg (ls-compile ,arg))) args)
,@body))))
decls)
(concat "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)
+ (variables '())
+ (prelude ""))
+ (dolist (x args)
+ (let ((v (concat "x" (integer-to-string (incf counter)))))
+ (push v variables)
+ (concatf prelude
+ (concat "var " v " = " (ls-compile x) ";" *newline*
+ "if (typeof " v " !== 'number') throw 'Not a number!';"
+ *newline*))))
+ (js!selfcall prelude (funcall function (reverse variables)))))
+
+
+(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)
+ (concat "return " ,@body ";" *newline*))))
+
(defun num-op-num (x op y)
(type-check (("x" "number" x) ("y" "number" y))
(concat "x" op "y")))
-(define-builtin + (x y) (num-op-num x "+" y))
-(define-builtin - (x y) (num-op-num x "-" y))
-(define-builtin * (x y) (num-op-num x "*" y))
-(define-builtin / (x y) (num-op-num x "/" y))
+(define-raw-builtin + (&rest numbers)
+ (if (null numbers)
+ "0"
+ (variable-arity numbers
+ (join numbers "+"))))
+
+(define-raw-builtin - (x &rest others)
+ (let ((args (cons x others)))
+ (variable-arity args
+ (if (null others)
+ (concat "-" (car args))
+ (join args "-")))))
+
+(define-raw-builtin * (&rest numbers)
+ (if (null numbers)
+ "1"
+ (variable-arity numbers
+ (join numbers "*"))))
+
+(define-raw-builtin / (x &rest others)
+ (let ((args (cons x others)))
+ (variable-arity args
+ (if (null others)
+ (concat "1 /" (car args))
+ (join args "/")))))
(define-builtin mod (x y) (num-op-num x "%" y))
-(define-builtin < (x y) (js!bool (num-op-num x "<" y)))
-(define-builtin > (x y) (js!bool (num-op-num x ">" y)))
-(define-builtin = (x y) (js!bool (num-op-num x "==" y)))
-(define-builtin <= (x y) (js!bool (num-op-num x "<=" y)))
-(define-builtin >= (x y) (js!bool (num-op-num x ">=" y)))
+
+(defun comparison-conjuntion (vars op)
+ (cond
+ ((null (cdr vars))
+ "true")
+ ((null (cddr vars))
+ (concat (car vars) op (cadr vars)))
+ (t
+ (concat (car vars) op (cadr vars)
+ " && "
+ (comparison-conjuntion (cdr vars) op)))))
+
+(defmacro define-builtin-comparison (op sym)
+ `(define-raw-builtin ,op (x &rest args)
+ (let ((args (cons x args)))
+ (variable-arity args
+ (js!bool (comparison-conjuntion args ,sym))))))
+
+(define-builtin-comparison > ">")
+(define-builtin-comparison < "<")
+(define-builtin-comparison >= ">=")
+(define-builtin-comparison <= "<=")
+(define-builtin-comparison = "==")
(define-builtin numberp (x)
(js!bool (concat "(typeof (" x ") == \"number\")")))
(concat "(" symbol ").value = " value))
(define-builtin fset (symbol value)
- (concat "(" symbol ").function = " value))
+ (concat "(" symbol ").fvalue = " value))
(define-builtin boundp (x)
(js!bool (concat "(" x ".value !== undefined)")))
(define-builtin symbol-function (x)
(js!selfcall
"var symbol = " x ";" *newline*
- "var func = symbol.function;" *newline*
+ "var func = symbol.fvalue;" *newline*
"if (func === undefined) throw \"Function `\" + symbol.name + \"' is undefined.\";" *newline*
"return func;" *newline*))
(define-builtin lambda-code (x)
(concat "(" x ").toString()"))
-
(define-builtin eq (x y) (js!bool (concat "(" x " === " y ")")))
(define-builtin equal (x y) (js!bool (concat "(" x " == " y ")")))
-(define-builtin string (x)
+(define-builtin char-to-string (x)
(type-check (("x" "number" x))
"String.fromCharCode(x)"))
(type-check (("x" "string" x))
"x.length"))
-(define-compilation slice (string a &optional b)
+(define-raw-builtin slice (string a &optional b)
(js!selfcall
"var str = " (ls-compile string) ";" *newline*
"var a = " (ls-compile a) ";" *newline*
("string2" "string" string2))
"string1.concat(string2)"))
-(define-compilation funcall (func &rest args)
+(define-raw-builtin funcall (func &rest args)
(concat "(" (ls-compile func) ")("
- (join (mapcar #'ls-compile args)
+ (join (cons "pv" (mapcar #'ls-compile args))
", ")
")"))
-(define-compilation apply (func &rest args)
+(define-raw-builtin apply (func &rest args)
(if (null args)
(concat "(" (ls-compile func) ")()")
(let ((args (butlast args))
(last (car (last args))))
(js!selfcall
"var f = " (ls-compile func) ";" *newline*
- "var args = [" (join (mapcar #'ls-compile args)
+ "var args = [" (join (cons "pv" (mapcar #'ls-compile args))
", ")
"];" *newline*
"var tail = (" (ls-compile last) ");" *newline*
(define-builtin new () "{}")
+(define-builtin objectp (x)
+ (js!bool (concat "(typeof (" x ") === 'object')")))
+
(define-builtin oget (object key)
(js!selfcall
"var tmp = " "(" object ")[" key "];" *newline*
(type-check (("x" "string" x))
"lisp.write(x)"))
+(define-builtin make-array (n)
+ (js!selfcall
+ "var r = [];" *newline*
+ "for (var i = 0; i < " n "; i++)" *newline*
+ (indent "r.push(" (ls-compile nil) ");" *newline*)
+ "return r;" *newline*))
+
+(define-builtin arrayp (x)
+ (js!bool
+ (js!selfcall
+ "var x = " x ";" *newline*
+ "return typeof x === 'object' && 'length' in x;")))
+
+(define-builtin aref (array n)
+ (js!selfcall
+ "var x = " "(" array ")[" n "];" *newline*
+ "if (x === undefined) throw 'Out of range';" *newline*
+ "return x;" *newline*))
+
+(define-builtin aset (array n value)
+ (js!selfcall
+ "var x = " array ";" *newline*
+ "var i = " n ";" *newline*
+ "if (i < 0 || i >= x.length) throw 'Out of range';" *newline*
+ "return x[i] = " value ";" *newline*))
+
+(define-builtin get-unix-time ()
+ (concat "(Math.round(new Date() / 1000))"))
+
+(define-builtin values-array (array)
+ (concat "values.apply(this, " array ")"))
+
+(define-raw-builtin values (&rest args)
+ (concat "values(" (join (mapcar #'ls-compile args) ", ") ")"))
+
+
(defun macro (x)
(and (symbolp x)
(let ((b (lookup-in-lexenv x *environment* 'function)))
form)))
(defun compile-funcall (function args)
- (concat (ls-compile `#',function) "("
- (join (mapcar #'ls-compile args)
- ", ")
- ")"))
+ (let ((values-funcs (if *multiple-value-p* "values" "pv")))
+ (if (and (symbolp function)
+ (claimp function 'function 'non-overridable))
+ (concat (ls-compile `',function) ".fvalue("
+ (join (cons values-funcs (mapcar #'ls-compile args))
+ ", ")
+ ")")
+ (concat (ls-compile `#',function) "("
+ (join (cons values-funcs (mapcar #'ls-compile args))
+ ", ")
+ ")"))))
-(defun ls-compile (sexp)
- (cond
- ((symbolp sexp)
- (let ((b (lookup-in-lexenv sexp *environment* 'variable)))
- (if (eq (binding-type b) 'lexical-variable)
- (binding-value b)
- (ls-compile `(symbol-value ',sexp)))))
- ((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
- ((listp sexp)
- (if (assoc (car sexp) *compilations*)
- (let ((comp (second (assoc (car sexp) *compilations*))))
- (apply comp (cdr sexp)))
- (if (macro (car sexp))
- (ls-compile (ls-macroexpand-1 sexp))
- (compile-funcall (car sexp) (cdr sexp)))))))
+(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))) ";")
+ (join-trailing
+ (remove-if #'null-or-empty-p (mapcar #'ls-compile sexps))
+ (concat ";" *newline*))))
+
+(defun ls-compile (sexp &optional multiple-value-p)
+ (let ((*multiple-value-p* multiple-value-p))
+ (cond
+ ((symbolp sexp)
+ (let ((b (lookup-in-lexenv sexp *environment* 'variable)))
+ (cond
+ ((and b (not (member 'special (binding-declarations b))))
+ (binding-value b))
+ ((or (keywordp sexp)
+ (member 'constant (binding-declarations b)))
+ (concat (ls-compile `',sexp) ".value"))
+ (t
+ (ls-compile `(symbol-value ',sexp))))))
+ ((integerp sexp) (integer-to-string sexp))
+ ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
+ ((arrayp sexp) (literal sexp))
+ ((listp sexp)
+ (let ((name (car sexp))
+ (args (cdr sexp)))
+ (cond
+ ;; Special forms
+ ((assoc name *compilations*)
+ (let ((comp (second (assoc name *compilations*))))
+ (apply comp args)))
+ ;; Built-in functions
+ ((and (assoc name *builtins*)
+ (not (claimp name 'function 'notinline)))
+ (let ((comp (second (assoc name *builtins*))))
+ (apply comp args)))
+ (t
+ (if (macro name)
+ (ls-compile (ls-macroexpand-1 sexp))
+ (compile-funcall name args))))))
+ (t
+ (error "How should I compile this?")))))
(defun ls-compile-toplevel (sexp)
(let ((*toplevel-compilations* nil))
`(prog1
(progn
(setq *compilation-unit-checks* nil)
- (clear-undeclared-global-bindings)
,@body)
(dolist (check *compilation-unit-checks*)
(funcall check))))
(ls-compile-toplevel x))))
(js-eval code)))
+ (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))
+
+ (setq *package* *user-package*)
+
(js-eval "var lisp")
(js-vset "lisp" (new))
(js-vset "lisp.read" #'ls-read-from-string)
(toplevel-compilation
(ls-compile
`(progn
- ,@(mapcar (lambda (s)
- `(oset *package* ,(symbol-name (car s))
- (js-vref ,(cdr s))))
+ ,@(mapcar (lambda (s) `(%intern-symbol (js-vref ,(cdr s))))
*literal-symbols*)
(setq *literal-symbols* ',*literal-symbols*)
(setq *environment* ',*environment*)
projects / jscl.git / blobdiff