;;; Utils
+#+common-lisp
(defmacro while (condition &body body)
`(do ()
((not ,condition))
,@body))
+(defvar *newline* "
+")
+
;;; simplify me, please
(defun concat (&rest strs)
(reduce (lambda (s1 s2) (concatenate 'string s1 s2))
separator
(join (cdr list) separator)))))
+(defun join-trailing (list separator)
+ (if (null list)
+ ""
+ (concat (car list) separator (join-trailing (cdr list) separator))))
+
(defun integer-to-string (x)
(if (zerop x)
"0"
(or (char= ch #\space) (char= ch #\newline) (char= ch #\tab)))
(defun skip-whitespaces (stream)
- (loop for ch = (%peek-char stream)
- while (and ch (whitespacep ch))
- do (%read-char stream)))
+ (let (ch)
+ (setq ch (%peek-char stream))
+ (while (and ch (whitespacep ch))
+ (%read-char stream)
+ (setq ch (%peek-char stream)))))
(defun terminalp (ch)
- (or (null ch) (whitespacep ch) (char= #\) ch)))
+ (or (null ch) (whitespacep ch) (char= #\) ch) (char= #\( ch)))
(defun read-until (stream func)
- (let ((string ""))
- (loop for ch = (%peek-char stream)
- until (funcall func ch)
- do (setq string (concat string (string ch)))
- do (%read-char stream))
+ (let ((string "")
+ (ch))
+ (setq ch (%peek-char stream))
+ (while (not (funcall func ch))
+ (setq string (concat string (string ch)))
+ (%read-char stream)
+ (setq ch (%peek-char stream)))
string))
(defun skip-whitespaces-and-comments (stream)
(%read-char stream)
(ecase (%read-char stream)
(#\'
- (list 'function (ls-read stream)))))
+ (list 'function (ls-read stream)))
+ (#\+
+ (let ((feature (read-until stream #'terminalp)))
+ (cond
+ ((string= feature "common-lisp")
+ (ls-read stream);ignore
+ (ls-read stream))
+ ((string= feature "lispstrack")
+ (ls-read stream))
+ (t
+ (error "Unknown reader form.")))))))
(t
(let ((string (read-until stream #'terminalp)))
(if (every #'digit-char-p string)
(defvar *compilations* nil)
(defun ls-compile-block (sexps env fenv)
- (concat (join (mapcar (lambda (x)
- (concat (ls-compile x env fenv) ";"))
- sexps)
- ";
-")))
+ (join-trailing (mapcar (lambda (x)
+ (ls-compile x env fenv))
+ sexps)
+ ";
+"))
(defun extend-env (args env)
(append (mapcar #'make-var-binding args) env))
`(push (list ',name (lambda (env fenv ,@args) ,@body))
*compilations*))
+(defvar *toplevel-compilations*)
+
(define-compilation if (condition true false)
(concat "("
(ls-compile condition env fenv)
(join (mapcar (lambda (x) (lookup-variable x new-env))
required-arguments)
",")
- "){
-"
+ "){"
+ *newline*
(if rest-argument
(concat "var " (lookup-variable rest-argument new-env)
" = arguments.slice("
- (prin1-to-string (length required-arguments)) ");
-")
+ (prin1-to-string (length required-arguments))
+ ");"
+ *newline*)
"")
-
(concat (ls-compile-block (butlast body) new-env fenv)
"return " (ls-compile (car (last body)) new-env fenv) ";")
- "
-})"))))
+ *newline*
+ "})"))))
(define-compilation fsetq (var val)
(concat (lookup-function var fenv)
;;; Literals
-(defvar *literals* '())
-
(defun literal->js (sexp)
(cond
((null sexp) "undefined")
(let ((counter 0))
(defun literal (form)
(let ((var (concat "l" (integer-to-string (incf counter)))))
- (push (cons var (literal->js form)) *literals*)
+ (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
var)))
(define-compilation quote (sexp)
((symbolp x)
(lookup-function x fenv))))
+#+common-lisp
(defmacro eval-when-compile (&body body)
`(eval-when (:compile-toplevel :execute)
,@body))
(defvar *eval-when-compilations*)
(define-compilation eval-when-compile (&rest body)
- (setq *eval-when-compilations* "")
(eval (cons 'progn body))
- (if (string= *eval-when-compilations* "")
- nil
- *eval-when-compilations*))
+ nil)
(defmacro define-transformation (name args form)
`(define-compilation ,name ,args
(backquote-expand-1 (cadr form))
form))
+(defmacro backquote (form)
+ (backquote-expand-1 form))
+
(define-transformation backquote (form)
(backquote-expand-1 form))
(define-compilation = (x y)
(concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))"))
+(define-compilation null (x)
+ (concat "(" (ls-compile x env fenv) "== undefined)"))
+
(define-compilation cons (x y)
(concat "{car: " (ls-compile x env fenv) ", cdr: " (ls-compile y env fenv) "}"))
(define-compilation code-char (x)
(concat "String.fromCharCode( " (ls-compile x env fenv) ")"))
-
-(defmacro with-eval-when-compilation (&body body)
- `(setq *eval-when-compilations*
- (concat *eval-when-compilations* (progn ,@body))))
+(define-compilation funcall (func &rest args)
+ (concat "("
+ (ls-compile func env fenv)
+ ")("
+ (join (mapcar (lambda (x)
+ (ls-compile x env fenv))
+ args)
+ ", ")
+ ")"))
(defun %compile-defvar (name)
(push (make-var-binding name) *env*)
- (with-eval-when-compilation
- (concat "var " (lookup-variable name *env*))))
+ (push (concat "var " (lookup-variable name *env*)) *toplevel-compilations*))
(defun %compile-defun (name)
(push (make-func-binding name) *fenv*)
- (with-eval-when-compilation
- (concat "var " (lookup-variable name *fenv*))))
+ (push (concat "var " (lookup-variable name *fenv*)) *toplevel-compilations*))
(defun %compile-defmacro (name lambda)
(push (cons name (cons 'macro lambda)) *fenv*))
(compile-funcall (car sexp) (cdr sexp) env fenv)))))))
(defun ls-compile-toplevel (sexp)
- (setq *literals* nil)
+ (setq *toplevel-compilations* nil)
(let ((code (ls-compile sexp)))
(prog1
- (concat (join (mapcar (lambda (lit)
- (concat "var " (car lit) " = " (cdr lit) ";
-"))
- *literals*)
+ (concat (join (mapcar (lambda (x) (concat x ";" *newline*))
+ *toplevel-compilations*)
"")
code)
- (setq *literals* nil))))
+ (setq *toplevel-compilations* nil))))
+#+common-lisp
(defun ls-compile-file (filename output)
(with-open-file (in filename)
(with-open-file (out output :direction :output :if-exists :supersede)
for compilation = (ls-compile-toplevel x)
when compilation do (write-line (concat compilation "; ") out)))))
-
;;; Testing
(defun compile-test ()
(ls-compile-file "test.lisp" "test.js"))
projects / jscl.git / blobdiff