X-Git-Url: http://repo.macrolet.net/gitweb/?a=blobdiff_plain;f=lispstrack.lisp;h=8a78bf50d8979a03f1e1ca9f9c2f635e90766308;hb=b555a69d351b6be0ed61343d79a80771957a7413;hp=151036d8aeea0f5551fc282a30da8fefe66e8103;hpb=956d52854f37c4df9257724558f121193be52ae2;p=jscl.git

diff --git a/lispstrack.lisp b/lispstrack.lisp
index 151036d..8a78bf5 100644
--- a/lispstrack.lisp
+++ b/lispstrack.lisp
@@ -1,10 +1,14 @@
 ;;; 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))
@@ -23,6 +27,11 @@
              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"
@@ -60,19 +69,23 @@
   (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)
@@ -129,7 +142,17 @@
        (%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)
@@ -153,11 +176,11 @@
 (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))
@@ -186,6 +209,8 @@
   `(push (list ',name (lambda (env fenv ,@args) ,@body))
          *compilations*))
 
+(defvar *toplevel-compilations*)
+
 (define-compilation if (condition true false)
   (concat "("
           (ls-compile condition env fenv)
@@ -212,19 +237,19 @@
               (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)
@@ -239,8 +264,6 @@
 
 ;;; Literals
 
-(defvar *literals* '())
-
 (defun literal->js (sexp)
   (cond
     ((null sexp) "undefined")
@@ -255,7 +278,7 @@
 (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)
@@ -278,17 +301,15 @@
     ((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
@@ -330,6 +351,9 @@
       (backquote-expand-1 (cadr form))
       form))
 
+(defmacro backquote (form)
+  (backquote-expand-1 form))
+
 (define-transformation backquote (form)
   (backquote-expand-1 form))
 
@@ -350,6 +374,9 @@
 (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) "}"))
 
@@ -368,20 +395,23 @@
 (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*))
@@ -421,17 +451,16 @@
              (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)
@@ -441,7 +470,6 @@
          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"))