(defvar *package* (new))
+(defvar nil (make-symbol "NIL"))
+(set *package* "NIL" nil)
+
+(defvar t (make-symbol "T"))
+(set *package* "T" t)
+
+(defun internp (name)
+ (in name *package*))
+
(defun intern (name)
- (let ((s (get *package* name)))
- (if s s (set *package* name (make-symbol name)))))
+ (if (internp name)
+ (get *package* name)
+ (set *package* name (make-symbol name))))
(defun find-symbol (name)
(get *package* name))
-(defvar t 't)
-(defvar nil 'nil)
-
(defmacro when (condition &rest body)
`(if ,condition (progn ,@body) nil))
(defun truncate (x y) (floor (/ x y)))
(defun cons (x y ) (cons x y))
+(defun consp (x) (consp x))
+
(defun car (x) (car x))
(defun caar (x) (car (car x)))
(defun cadr (x) (car (cdr x)))
(t
(cons (car list) (remove x (cdr list))))))
+(defun remove-if (func list)
+ (cond
+ ((null list)
+ nil)
+ ((funcall func (car list))
+ (remove-if func (cdr list)))
+ (t
+ (cons (car list) (remove-if func (cdr list))))))
+
+(defun remove-if-not (func list)
+ (cond
+ ((null list)
+ nil)
+ ((funcall func (car list))
+ (cons (car list) (remove-if-not func (cdr list))))
+ (t
+ (remove-if-not func (cdr list)))))
+
(defun digit-char-p (x)
(if (and (<= #\0 x) (<= x #\9))
(- x #\0)
(defun string= (s1 s2)
(equal s1 s2))
+;; ----------------------------------------------------------
+
+;;; Utils
+
+#+common-lisp
+(progn
+ (defmacro while (condition &body body)
+ `(do ()
+ ((not ,condition))
+ ,@body))
+
+ (defun concat-two (s1 s2)
+ (concatenate 'string s1 s2))
+
+ (defun setcar (cons new)
+ (setf (car cons) new))
+ (defun setcdr (cons new)
+ (setf (cdr cons) new)))
+
+(defvar *newline* (string (code-char 10)))
+
+(defun concat (&rest strs)
+ (!reduce (lambda (s1 s2) (concat-two s1 s2))
+ strs
+ ""))
+
+;;; Concatenate a list of strings, with a separator
+(defun join (list separator)
+ (cond
+ ((null list)
+ "")
+ ((null (cdr list))
+ (car list))
+ (t
+ (concat (car list)
+ separator
+ (join (cdr list) separator)))))
+
+(defun join-trailing (list separator)
+ (cond
+ ((null list)
+ "")
+ ((null (car list))
+ (join-trailing (cdr list) separator))
+ (t
+ (concat (car list) separator (join-trailing (cdr list) separator)))))
+
+(defun integer-to-string (x)
+ (if (zerop x)
+ "0"
+ (let ((digits nil))
+ (while (not (= x 0))
+ (push (mod x 10) digits)
+ (setq x (truncate x 10)))
+ (join (mapcar (lambda (d) (string (char "0123456789" d)))
+ digits)
+ ""))))
+
;;;; Reader
;;; It is a basic Lisp reader. It does not use advanced stuff
(setcdr stream (1+ (cdr stream))))))
(defun whitespacep (ch)
- (or (char= ch #\space) (char= ch #\newline)))
+ (or (char= ch #\space) (char= ch #\newline) (char= ch #\tab)))
(defun skip-whitespaces (stream)
(let (ch)
(read-until stream #'terminalp))))
(cond
((string= cname "space") (char-code #\space))
+ ((string= cname "tab") (char-code #\tab))
((string= cname "newline") (char-code #\newline))
(t (char-code (char cname 0))))))
(#\+
(defun mark-binding-as-declared (b)
(setcar (cdddr b) t))
-(let ((counter 0))
- (defun gvarname (symbol)
- (concat "v" (integer-to-string (incf counter))))
-
- (defun lookup-variable (symbol env)
- (or (assoc symbol env)
- (assoc symbol *env*)
- (let ((name (symbol-name symbol))
- (binding (make-binding symbol 'variable (gvarname symbol) nil)))
- (push binding *env*)
- (push (lambda ()
- (unless (binding-declared (assoc symbol *env*))
- (error (concat "Undefined variable `" name "'"))))
- *compilation-unit-checks*)
- binding)))
-
- (defun lookup-variable-translation (symbol env)
- (binding-translation (lookup-variable symbol env)))
-
- (defun extend-local-env (args env)
- (append (mapcar (lambda (symbol)
- (make-binding symbol 'variable (gvarname symbol) t))
- args)
- env)))
-
-(let ((counter 0))
- (defun lookup-function (symbol env)
- (or (assoc symbol env)
- (assoc symbol *fenv*)
- (let ((name (symbol-name symbol))
- (binding
- (make-binding symbol
- 'function
- (concat "f" (integer-to-string (incf counter)))
- nil)))
- (push binding *fenv*)
- (push (lambda ()
- (unless (binding-declared (assoc symbol *fenv*))
- (error (concat "Undefined function `" name "'"))))
- *compilation-unit-checks*)
- binding)))
-
- (defun lookup-function-translation (symbol env)
- (binding-translation (lookup-function symbol env))))
+(defvar *variable-counter* 0)
+(defun gvarname (symbol)
+ (concat "v" (integer-to-string (incf *variable-counter*))))
+
+(defun lookup-variable (symbol env)
+ (or (assoc symbol env)
+ (assoc symbol *env*)
+ (let ((name (symbol-name symbol))
+ (binding (make-binding symbol 'variable (gvarname symbol) nil)))
+ (push binding *env*)
+ (push (lambda ()
+ (unless (binding-declared (assoc symbol *env*))
+ (error (concat "Undefined variable `" name "'"))))
+ *compilation-unit-checks*)
+ binding)))
+
+(defun lookup-variable-translation (symbol env)
+ (binding-translation (lookup-variable symbol env)))
+
+(defun extend-local-env (args env)
+ (append (mapcar (lambda (symbol)
+ (make-binding symbol 'variable (gvarname symbol) t))
+ args)
+ env))
+
+(defvar *function-counter* 0)
+(defun lookup-function (symbol env)
+ (or (assoc symbol env)
+ (assoc symbol *fenv*)
+ (let ((name (symbol-name symbol))
+ (binding
+ (make-binding symbol
+ 'function
+ (concat "f" (integer-to-string (incf *function-counter*)))
+ nil)))
+ (push binding *fenv*)
+ (push (lambda ()
+ (unless (binding-declared (assoc symbol *fenv*))
+ (error (concat "Undefined function `" name "'"))))
+ *compilation-unit-checks*)
+ binding)))
+
+(defun lookup-function-translation (symbol env)
+ (binding-translation (lookup-function symbol env)))
(defvar *toplevel-compilations* nil)
(define-compilation if (condition true false)
(concat "("
- (ls-compile condition env fenv)
+ (ls-compile condition env fenv) " !== " (ls-compile nil nil nil)
" ? "
(ls-compile true env fenv)
" : "
*newline*
(if rest-argument
(let ((js!rest (lookup-variable-translation rest-argument new-env)))
- (concat "var " js!rest "= false;" *newline*
+ (concat "var " js!rest "= " (ls-compile nil env fenv) ";" *newline*
"for (var i = arguments.length-1; i>="
(integer-to-string (length required-arguments))
"; i--)" *newline*
(defun literal->js (sexp)
(cond
- ((null sexp) "false")
((integerp sexp) (integer-to-string sexp))
((stringp sexp) (concat "\"" (escape-string sexp) "\""))
((symbolp sexp) (ls-compile `(intern ,(escape-string (symbol-name sexp))) *env* *fenv*))
", cdr: "
(literal->js (cdr sexp)) "}"))))
-(let ((counter 0))
- (defun literal (form)
- (let ((var (concat "l" (integer-to-string (incf counter)))))
- (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
- var)))
+(defvar *literal-counter* 0)
+(defun literal (form)
+ (let ((var (concat "l" (integer-to-string (incf *literal-counter*)))))
+ (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
+ var))
(define-compilation quote (sexp)
(literal sexp))
(define-compilation while (pred &rest body)
(concat "(function(){ while("
- (ls-compile pred env fenv)
+ (ls-compile pred env fenv) " !== " (ls-compile nil nil nil)
"){"
(ls-compile-block body env fenv)
"}})()"))
(lookup-function-translation x fenv))))
#+common-lisp
-(defmacro eval-when-compile (&body body)
+c(defmacro eval-when-compile (&body body)
`(eval-when (:compile-toplevel :load-toplevel :execute)
,@body))
;;; Primitives
+(defun compile-bool (x)
+ (concat "(" x "?" (ls-compile t nil nil) ": " (ls-compile nil nil nil) ")"))
+
(define-compilation + (x y)
(concat "((" (ls-compile x env fenv) ") + (" (ls-compile y env fenv) "))"))
(concat "((" (ls-compile x env fenv) ") / (" (ls-compile y env fenv) "))"))
(define-compilation < (x y)
- (concat "((" (ls-compile x env fenv) ") < (" (ls-compile y env fenv) "))"))
+ (compile-bool (concat "((" (ls-compile x env fenv) ") < (" (ls-compile y env fenv) "))")))
(define-compilation = (x y)
- (concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))"))
+ (compile-bool (concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))")))
(define-compilation numberp (x)
- (concat "(typeof (" (ls-compile x env fenv) ") == \"number\")"))
+ (compile-bool (concat "(typeof (" (ls-compile x env fenv) ") == \"number\")")))
(define-compilation mod (x y)
(concat "(Math.floor(" (ls-compile x env fenv) "))"))
(define-compilation null (x)
- (concat "(" (ls-compile x env fenv) "== false)"))
+ (compile-bool (concat "(" (ls-compile x env fenv) "===" (ls-compile nil env fenv) ")")))
(define-compilation cons (x y)
(concat "{car: " (ls-compile x env fenv) ", cdr: " (ls-compile y env fenv) "}"))
(define-compilation consp (x)
- (concat "(function(){ var tmp = "
- (ls-compile x env fenv)
- "; return (typeof tmp == 'object' && 'car' in tmp);})()"))
+ (compile-bool
+ (concat "(function(){ var tmp = "
+ (ls-compile x env fenv)
+ "; return (typeof tmp == 'object' && 'car' in tmp);})()")))
(define-compilation car (x)
- (concat "(" (ls-compile x env fenv) ").car"))
+ (concat "(function () { var tmp = " (ls-compile x env fenv)
+ "; return tmp === " (ls-compile nil nil nil) "? "
+ (ls-compile nil nil nil)
+ ": tmp.car; })()"))
(define-compilation cdr (x)
- (concat "(" (ls-compile x env fenv) ").cdr"))
+ (concat "(function () { var tmp = " (ls-compile x env fenv)
+ "; return tmp === " (ls-compile nil nil nil) "? "
+ (ls-compile nil nil nil)
+ ": tmp.cdr; })()"))
(define-compilation setcar (x new)
(concat "((" (ls-compile x env fenv) ").car = " (ls-compile new env fenv) ")"))
(concat "((" (ls-compile x env fenv) ").cdr = " (ls-compile new env fenv) ")"))
(define-compilation symbolp (x)
- (concat "(function(){ var tmp = "
- (ls-compile x env fenv)
- "; return (typeof tmp == 'object' && 'name' in tmp); })()"))
+ (compile-bool
+ (concat "(function(){ var tmp = "
+ (ls-compile x env fenv)
+ "; return (typeof tmp == 'object' && 'name' in tmp); })()")))
(define-compilation make-symbol (name)
(concat "{name: " (ls-compile name env fenv) "}"))
(concat "(" (ls-compile x env fenv) ").name"))
(define-compilation eq (x y)
- (concat "(" (ls-compile x env fenv) " === " (ls-compile y env fenv) ")"))
+ (compile-bool
+ (concat "(" (ls-compile x env fenv) " === " (ls-compile y env fenv) ")")))
(define-compilation equal (x y)
- (concat "(" (ls-compile x env fenv) " == " (ls-compile y env fenv) ")"))
+ (compile-bool
+ (concat "(" (ls-compile x env fenv) " == " (ls-compile y env fenv) ")")))
(define-compilation string (x)
(concat "String.fromCharCode(" (ls-compile x env fenv) ")"))
(define-compilation stringp (x)
- (concat "(typeof(" (ls-compile x env fenv) ") == \"string\")"))
+ (compile-bool
+ (concat "(typeof(" (ls-compile x env fenv) ") == \"string\")")))
(define-compilation string-upcase (x)
(concat "(" (ls-compile x env fenv) ").toUpperCase()"))
", ")
")"))
-
(define-compilation apply (func &rest args)
(if (null args)
(concat "(" (ls-compile func env fenv) ")()")
", ")
"];" *newline*
"var tail = (" (ls-compile last env fenv) ");" *newline*
- "while (tail != false){" *newline*
+ "while (tail != " (ls-compile nil env fenv) "){" *newline*
" args.push(tail.car);" *newline*
" tail = tail.cdr;" *newline*
"}" *newline*
"return f.apply(this, args);" *newline*
"})()" *newline*))))
-
(define-compilation js-eval (string)
(concat "eval(" (ls-compile string env fenv) ")"))
"{}")
(define-compilation get (object key)
- (concat "(" (ls-compile object env fenv) ")[" (ls-compile key env fenv) "]"))
+ (concat "(function(){ var tmp = "
+ "(" (ls-compile object env fenv) ")[" (ls-compile key env fenv) "]"
+ ";"
+ "return tmp == undefined? " (ls-compile nil nil nil) ": tmp ;"
+ "})()"))
(define-compilation set (object key value)
(concat "(("
(ls-compile key env fenv) "]"
" = " (ls-compile value env fenv) ")"))
+(define-compilation in (key object)
+ (compile-bool
+ (concat "(" (ls-compile key env fenv) " in " (ls-compile object env fenv) ")")))
+
+
(defun macrop (x)
(and (symbolp x) (eq (binding-type (lookup-function x *fenv*)) 'macro)))
(setq *toplevel-compilations* nil)
(let ((code (ls-compile sexp nil nil)))
(prog1
- (concat (join (mapcar (lambda (x) (concat x ";" *newline*))
- *toplevel-compilations*)
- "")
+ (concat #+common-lisp (concat "/* " (princ-to-string sexp) " */")
+ (join (mapcar (lambda (x) (concat x ";" *newline*))
+ *toplevel-compilations*)
+ "")
code)
(setq *toplevel-compilations* nil))))
-
-(defmacro with-compilation-unit (&rest body)
- `(progn
- (setq *compilation-unit-checks* nil)
- (prog1 (progn ,@body)
- (dolist (check *compilation-unit-checks*)
- (funcall check))
- (setq *compilation-unit-checks* nil))))
-
-
#+common-lisp
(progn
(defun read-whole-file (filename)
(defun bootstrap ()
(ls-compile-file "lispstrack.lisp" "lispstrack.js")))
+;;; ----------------------------------------------------------
+
+(defmacro with-compilation-unit (&rest body)
+ `(prog1
+ (progn
+ (setq *compilation-unit-checks* nil)
+ (setq *env* (remove-if-not #'binding-declared *env*))
+ (setq *fenv* (remove-if-not #'binding-declared *fenv*))
+ ,@body)
+ (dolist (check *compilation-unit-checks*)
+ (funcall check))))
(defun eval (x)
(let ((code
(ls-compile-toplevel x nil nil))))
(js-eval code)))
+
;; Set the initial global environment to be equal to the host global
;; environment at this point of the compilation.
(eval-when-compile
(let ((c1 (ls-compile `(setq *fenv* ',*fenv*) nil nil))
- (c2 (ls-compile `(setq *env* ',*env*) nil nil)))
+ (c2 (ls-compile `(setq *env* ',*env*) nil nil))
+ (c3 (ls-compile `(setq *variable-counter* ',*variable-counter*) nil nil))
+ (c4 (ls-compile `(setq *function-counter* ',*function-counter*) nil nil))
+ (c5 (ls-compile `(setq *literal-counter* ',*literal-counter*) nil nil)))
(setq *toplevel-compilations*
- (append *toplevel-compilations* (list c1 c2)))))
+ (append *toplevel-compilations* (list c1 c2 c3 c4 c5)))))
(js-eval
(concat "var lisp = {};"
projects / jscl.git / blobdiff