(t
(cons (ls-read stream) (%read-list stream))))))
+(defun read-string (stream)
+ (let ((string "")
+ (ch nil))
+ (setq ch (%read-char stream))
+ (while (not (char= ch #\"))
+ (when (char= ch #\\)
+ (setq ch (%read-char stream)))
+ (setq string (concat string (string ch)))
+ (setq ch (%read-char stream)))
+ string))
+
(defvar *eof* (make-symbol "EOF"))
(defun ls-read (stream)
(skip-whitespaces-and-comments stream)
(list 'backquote (ls-read stream)))
((char= ch #\")
(%read-char stream)
- (prog1 (read-until stream (lambda (ch) (char= ch #\")))
- (%read-char stream)))
+ (read-string stream))
((char= ch #\,)
(%read-char stream)
(if (eql (%peek-char stream) #\@)
(defvar *compilation-unit-checks* '())
-(defparameter *env* '())
-(defparameter *fenv* '())
+(defvar *env* '())
+(defvar *fenv* '())
(defun make-binding (name type js declared)
(list name type js declared))
(binding-translation (lookup-function symbol env))))
-(defvar *toplevel-compilations*)
+(defvar *toplevel-compilations* nil)
(defun %compile-defvar (name)
(let ((b (lookup-variable name *env*)))
sexps))
";
"))
-(defmacro define-compilation (name args &body body)
+(defmacro define-compilation (name args &rest body)
;; Creates a new primitive `name' with parameters args and
;; @body. The body can access to the local environment through the
;; variable ENV.
(let ((required-arguments (lambda-list-required-argument lambda-list))
(rest-argument (lambda-list-rest-argument lambda-list)))
(let ((new-env (extend-local-env
- (append (if rest-argument (list rest-argument))
+ (append (and rest-argument (list rest-argument))
required-arguments)
env)))
(concat "(function ("
*newline*
(if rest-argument
(let ((js!rest (lookup-variable-translation rest-argument new-env)))
- (concat "var " js!rest ";" *newline*
+ (concat "var " js!rest "= false;" *newline*
"for (var i = arguments.length-1; i>="
(integer-to-string (length required-arguments))
"; i--)" *newline*
;;; 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))
+
(defun literal->js (sexp)
(cond
((null sexp) "false")
((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" sexp "\""))
- ((symbolp sexp) (concat "{name: \"" (symbol-name sexp) "\"}"))
+ ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
+ ((symbolp sexp) (ls-compile `(intern ,(escape-string (symbol-name sexp))) *env* *fenv*))
((consp sexp) (concat "{car: "
(literal->js (car sexp))
", cdr: "
(let ((counter 0))
(defun literal (form)
- (if (null form)
- (literal->js form)
- (let ((var (concat "l" (integer-to-string (incf counter)))))
- (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
- var))))
+ (cond
+ ((null form)
+ (literal->js form))
+ (t
+ (let ((var (concat "l" (integer-to-string (incf counter)))))
+ (push (concat "var " var " = " (literal->js form)) *toplevel-compilations*)
+ var)))))
(define-compilation quote (sexp)
(literal sexp))
(define-compilation = (x y)
(concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))"))
+(define-compilation numberp (x)
+ (concat "(typeof (" (ls-compile x env fenv) ") == \"number\")"))
+
+
(define-compilation mod (x y)
(concat "((" (ls-compile x env fenv) ") % (" (ls-compile y 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);})()"))
+
(define-compilation car (x)
(concat "(" (ls-compile x env fenv) ").car"))
(define-compilation setcdr (x new)
(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); })()"))
+
(define-compilation make-symbol (name)
(concat "{name: " (ls-compile name 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\")"))
+
(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) ")()")
+ (let ((args (butlast args))
+ (last (car (last args))))
+ (concat "function(){" *newline*
+ "var f = " (ls-compile func env fenv) ";" *newline*
+ "var args = [" (join (mapcar (lambda (x)
+ (ls-compile x env fenv))
+ args)
+ ", ")
+ "];" *newline*
+ "var tail = (" (ls-compile last env fenv) ");" *newline*
+ "while (tail != false){" *newline*
+ " args.push(tail[0]);" *newline*
+ " args = args.slice(1);" *newline*
+ "}" *newline*
+ "return f.apply(this, args);" *newline*
+ "}" *newline*))))
+
+(define-compilation js-eval (string)
+ (concat "eval(" (ls-compile string env fenv) ")"))
+
+
(define-compilation error (string)
(concat "(function (){ throw " (ls-compile string env fenv) ";" "return 0;})()"))
(defun macrop (x)
(and (symbolp x) (eq (binding-type (lookup-function x *fenv*)) 'macro)))
-(defun ls-macroexpand-1 (form &optional env fenv)
+(defun ls-macroexpand-1 (form env fenv)
(when (macrop (car form))
(let ((binding (lookup-function (car form) *env*)))
(if (eq (binding-type binding) 'macro)
", ")
")"))
(t
- (error "Invalid function designator ~a." function))))
+ (error (concat "Invalid function designator " (symbol-name function))))))
-(defun ls-compile (sexp &optional env fenv)
+(defun ls-compile (sexp env fenv)
(cond
((symbolp sexp) (lookup-variable-translation sexp env))
((integerp sexp) (integer-to-string sexp))
- ((stringp sexp) (concat "\"" sexp "\""))
+ ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
((listp sexp)
(if (assoc (car sexp) *compilations*)
(let ((comp (second (assoc (car sexp) *compilations*))))
(ls-compile (ls-macroexpand-1 sexp env fenv) env fenv)
(compile-funcall (car sexp) (cdr sexp) env fenv))))))
+(defmacro with-compilation-unit (&rest body)
+ `(progn
+ (setq *env* nil)
+ (setq *fenv* nil)
+ (setq *compilation-unit-checks* nil)
+ ,@body
+ (dolist (check *compilation-unit-checks*)
+ (funcall check))
+ (setq *env* nil)
+ (setq *fenv* nil)
+ (setq *compilation-unit-checks* nil)))
+
(defun ls-compile-toplevel (sexp)
(setq *toplevel-compilations* nil)
- (let ((code (ls-compile sexp)))
+ (let ((code (ls-compile sexp nil nil)))
(prog1
- (concat (join (mapcar (lambda (x) (concat x ";" *newline*))
+ (concat "/* " (princ-to-string sexp) " */"
+ (join (mapcar (lambda (x) (concat x ";" *newline*))
*toplevel-compilations*)
- "")
+ "")
code)
(setq *toplevel-compilations* nil))))
projects / jscl.git / blobdiff