;;; as well as funcalls and macroexpansion, but no functions. So, we
;;; define the Lisp world from scratch. This code has to define enough
;;; language to the compiler to be able to run.
+
#+ecmalisp
(progn
(eval-when-compile
'(lambda (name args &rest body)
`(eval-when-compile
(%compile-defmacro ',name
- '(lambda ,(mapcar (lambda (x)
+ '(lambda ,(mapcar (lambda (x)
(if (eq x '&body)
'&rest
x))
(defmacro concatf (variable &body form)
`(setq ,variable (concat ,variable (progn ,@form))))
+(defun mapconcat (func list)
+ (join (mapcar func list)))
+
;;; Concatenate a list of strings, with a separator
(defun join (list &optional (separator ""))
(cond
(lexical-variable (concat (binding-translation b) " = " (ls-compile val env)))
(special-variable (ls-compile `(set ',var ,val) env)))))
+;;; FFI Variable accessors
+(define-compilation js-vref (var)
+ var)
+(define-compilation js-vset (var val)
+ (concat "(" var " = " (ls-compile val env) ")"))
+
;;; Literals
(defun escape-string (string)
(incf index))
output))
-(defun literal->js (sexp)
+
+(defvar *literal-symbols* nil)
+(defvar *literal-counter* 0)
+
+(defun genlit ()
+ (concat "l" (integer-to-string (incf *literal-counter*))))
+
+(defun literal (sexp &optional recursive)
(cond
((integerp sexp) (integer-to-string sexp))
((stringp sexp) (concat "\"" (escape-string sexp) "\""))
- ((symbolp sexp) (ls-compile `(intern ,(escape-string (symbol-name sexp))) *environment*))
- ((consp sexp) (concat "{car: "
- (literal->js (car sexp))
- ", cdr: "
- (literal->js (cdr sexp)) "}"))))
-
-(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))
+ ((symbolp sexp)
+ (or (cdr (assoc sexp *literal-symbols*))
+ (let ((v (genlit))
+ (s (concat "{name: \"" (escape-string (symbol-name sexp)) "\"}")))
+ (push (cons sexp v) *literal-symbols*)
+ (push (concat "var " v " = " s) *toplevel-compilations*)
+ v)))
+ ((consp sexp)
+ (let ((c (concat "{car: " (literal (car sexp) t) ", "
+ "cdr: " (literal (cdr sexp) t) "}")))
+ (if recursive
+ c
+ (let ((v (genlit)))
+ (push (concat "var " v " = " c) *toplevel-compilations*)
+ v))))))
+#+common-lisp
(define-compilation quote (sexp)
(literal sexp))
+#+ecmalisp
+(define-compilation quote (sexp)
+ (let ((v (genlit)))
+ (push (ls-compile `(js-vset ,v ,sexp) env)
+ *toplevel-compilations*)
+ v))
+
+
(define-compilation %while (pred &rest body)
(js!selfcall
"while(" (ls-compile pred env) " !== " (ls-compile nil) "){" *newline*
(let ((b (lookup-variable sexp env)))
(ecase (binding-type b)
(lexical-variable
- (lookup-variable-translation sexp env))
+ (binding-translation b))
(special-variable
(ls-compile `(symbol-value ',sexp) env)))))
((integerp sexp) (integer-to-string sexp))
(compile-funcall (car sexp) (cdr sexp) env))))))
(defun ls-compile-toplevel (sexp)
- (setq *toplevel-compilations* nil)
- (let ((code (ls-compile sexp)))
- (prog1
- (concat (join (mapcar (lambda (x) (concat x ";" *newline*))
- *toplevel-compilations*))
- code)
- (setq *toplevel-compilations* nil))))
+ (cond
+ ((and (consp sexp) (eq (car sexp) 'progn))
+ (mapconcat 'ls-compile-toplevel (cdr sexp)))
+ (t
+ (setq *toplevel-compilations* nil)
+ (let ((code (ls-compile sexp)))
+ (prog1
+ (concat (join (mapcar (lambda (x) (concat x ";" *newline*))
+ *toplevel-compilations*))
+ code)
+ (setq *toplevel-compilations* nil))))))
;;; Once we have the compiler, we define the runtime environment and
(setq *function-counter* ',*function-counter*)
(setq *literal-counter* ',*literal-counter*)
(setq *gensym-counter* ',*gensym-counter*)
- (setq *block-counter* ',*block-counter*)))))
+ (setq *block-counter* ',*block-counter*)
+ ,@(mapcar (lambda (s)
+ `(oset *package* ,(symbol-name (car s))
+ (js-vref ,(cdr s))))
+ *literal-symbols*)))))
(setq *toplevel-compilations*
(append *toplevel-compilations* (list tmp)))))
- (js-eval
- (concat "var lisp = {};"
- "lisp.read = " (lookup-function-translation 'ls-read-from-string nil) ";" *newline*
- "lisp.print = " (lookup-function-translation 'prin1-to-string nil) ";" *newline*
- "lisp.eval = " (lookup-function-translation 'eval nil) ";" *newline*
- "lisp.compile = " (lookup-function-translation 'ls-compile-toplevel nil) ";" *newline*
- "lisp.evalString = function(str){" *newline*
- " return lisp.eval(lisp.read(str));" *newline*
- "}" *newline*
- "lisp.compileString = function(str){" *newline*
- " return lisp.compile(lisp.read(str));" *newline*
- "}" *newline*)))
+ (js-eval "var lisp")
+ (js-vset "lisp" (new))
+ (js-vset "lisp.read" #'ls-read-from-string)
+ (js-vset "lisp.print" #'prin1-to-string)
+ (js-vset "lisp.eval" #'eval)
+ (js-vset "lisp.compile" #'ls-compile-toplevel)
+ (js-vset "lisp.evalString" (lambda (str) (eval (ls-read-from-string str))))
+ (js-vset "lisp.compileString" (lambda (str) (ls-compile-toplevel (ls-read-from-string str)))))
;;; Finally, we provide a couple of functions to easily bootstrap
(defun bootstrap ()
(setq *environment* (make-lexenv))
+ (setq *literal-symbols* nil)
(setq *variable-counter* 0
*gensym-counter* 0
*function-counter* 0