;;; 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))
(defvar *package* (new))
- (defvar nil (make-symbol "NIL"))
- (oset *package* "NIL" nil)
-
- (defvar t (make-symbol "T"))
- (oset *package* "T" t)
+ (defvar nil 'nil)
+ (defvar t 't)
(defun null (x)
(eq x nil))
""
(concat (car list) separator (join-trailing (cdr list) separator))))
+(defun mapconcat (func list)
+ (join (mapcar func list)))
;;; Like CONCAT, but prefix each line with four spaces. Two versions
;;; of this function are available, because the Ecmalisp version is
(or (lookup-in-lexenv symbol env 'variable)
(lookup-in-lexenv symbol *environment* 'variable)
(let ((name (symbol-name symbol))
- (binding (make-binding symbol 'variable (gvarname symbol) nil)))
+ (binding (make-binding symbol 'special-variable (gvarname symbol) nil)))
(push-to-lexenv binding *environment* 'variable)
(push (lambda ()
(let ((b (lookup-in-lexenv symbol *environment* 'variable)))
(defun extend-local-env (args env)
(let ((new (copy-lexenv env)))
(dolist (symbol args new)
- (let ((b (make-binding symbol 'variable (gvarname symbol) t)))
+ (let ((b (make-binding symbol 'lexical-variable (gvarname symbol) t)))
(push-to-lexenv b new 'variable)))))
(defvar *function-counter* 0)
(ls-compile val env)))
(define-compilation setq (var val)
- (concat (lookup-variable-translation var env)
- " = "
- (ls-compile val env)))
+ (let ((b (lookup-variable var env)))
+ (ecase (binding-type b)
+ (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
(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)
+ #+common-lisp
+ (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))
+ #+ecmalisp
+ (let ((v (genlit)))
+ (push (concat "var " v " = " (ls-compile `(intern ,(symbol-name sexp))))
+ *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))))))
(define-compilation quote (sexp)
(literal sexp))
+
(define-compilation %while (pred &rest body)
(js!selfcall
"while(" (ls-compile pred env) " !== " (ls-compile nil) "){" *newline*
(defun ls-compile (sexp &optional (env (make-lexenv)))
(cond
- ((symbolp sexp) (lookup-variable-translation sexp env))
+ ((symbolp sexp)
+ (let ((b (lookup-variable sexp env)))
+ (ecase (binding-type b)
+ (lexical-variable
+ (binding-translation b))
+ (special-variable
+ (ls-compile `(symbol-value ',sexp) env)))))
((integerp sexp) (integer-to-string sexp))
((stringp sexp) (concat "\"" (escape-string sexp) "\""))
((listp 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))
+ (let ((subs (mapcar 'ls-compile-toplevel (cdr sexp))))
+ (join-trailing
+ (remove-if (lambda (s) (or (null s) (equal s "")))
+ subs)
+ (concat ";" *newline*))))
+ (t
+ (setq *toplevel-compilations* nil)
+ (let ((code (ls-compile sexp)))
+ (prog1
+ (concat (join-trailing *toplevel-compilations*
+ (concat ";" *newline*))
+ 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
projects / jscl.git / blobdiff