+ (!reduce #'concat-two strs ""))
+
+;;; Concatenate a list of strings, with a separator
+(defun join (list &optional (separator ""))
+ (cond
+ ((null list)
+ "")
+ ((null (cdr list))
+ (car list))
+ (t
+ (concat (car list)
+ separator
+ (join (cdr list) separator)))))
+
+(defun join-trailing (list &optional (separator ""))
+ (if (null list)
+ ""
+ (concat (car list) separator (join-trailing (cdr list) separator))))
+
+(defun integer-to-string (x)
+ (cond
+ ((zerop x)
+ "0")
+ ((minusp x)
+ (concat "-" (integer-to-string (- 0 x))))
+ (t
+ (let ((digits nil))
+ (while (not (zerop x))
+ (push (mod x 10) digits)
+ (setq x (truncate x 10)))
+ (join (mapcar (lambda (d) (string (char "0123456789" d)))
+ digits))))))
+
+(defun print-to-string (form)
+ (cond
+ ((symbolp form) (symbol-name form))
+ ((integerp form) (integer-to-string form))
+ ((stringp form) (concat "\"" (escape-string form) "\""))
+ ((functionp form) (concat "#<FUNCTION>"))
+ ((listp form)
+ (concat "("
+ (join (mapcar #'print-to-string form)
+ " ")
+ ")"))))
+
+;;;; Reader
+
+;;; The Lisp reader, parse strings and return Lisp objects. The main
+;;; entry points are `ls-read' and `ls-read-from-string'.
+
+(defun make-string-stream (string)
+ (cons string 0))
+
+(defun %peek-char (stream)
+ (and (< (cdr stream) (length (car stream)))
+ (char (car stream) (cdr stream))))
+
+(defun %read-char (stream)
+ (and (< (cdr stream) (length (car stream)))
+ (prog1 (char (car stream) (cdr stream))
+ (setcdr stream (1+ (cdr stream))))))
+
+(defun whitespacep (ch)
+ (or (char= ch #\space) (char= ch #\newline) (char= ch #\tab)))
+
+(defun skip-whitespaces (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) (char= #\( ch)))
+
+(defun read-until (stream func)
+ (let ((string "")
+ (ch))
+ (setq ch (%peek-char stream))
+ (while (not (funcall func ch))
+ (setq string (concat string (string ch)))
+ (%read-char stream)
+ (setq ch (%peek-char stream)))
+ string))
+
+(defun skip-whitespaces-and-comments (stream)
+ (let (ch)
+ (skip-whitespaces stream)
+ (setq ch (%peek-char stream))
+ (while (and ch (char= ch #\;))
+ (read-until stream (lambda (x) (char= x #\newline)))
+ (skip-whitespaces stream)
+ (setq ch (%peek-char stream)))))
+
+(defun %read-list (stream)
+ (skip-whitespaces-and-comments stream)
+ (let ((ch (%peek-char stream)))
+ (cond
+ ((null ch)
+ (error "Unspected EOF"))
+ ((char= ch #\))
+ (%read-char stream)
+ nil)
+ ((char= ch #\.)
+ (%read-char stream)
+ (prog1 (ls-read stream)
+ (skip-whitespaces-and-comments stream)
+ (unless (char= (%read-char stream) #\))
+ (error "')' was expected."))))
+ (t
+ (cons (ls-read stream) (%read-list stream))))))
+
+(defun read-string (stream)
+ (let ((string "")
+ (ch nil))
+ (setq ch (%read-char stream))
+ (while (not (eql ch #\"))
+ (when (null ch)
+ (error "Unexpected EOF"))
+ (when (eql ch #\\)
+ (setq ch (%read-char stream)))
+ (setq string (concat string (string ch)))
+ (setq ch (%read-char stream)))
+ string))
+
+(defun read-sharp (stream)
+ (%read-char stream)
+ (ecase (%read-char stream)
+ (#\'
+ (list 'function (ls-read stream)))
+ (#\\
+ (let ((cname
+ (concat (string (%read-char stream))
+ (read-until stream #'terminalp))))
+ (cond
+ ((string= cname "space") (char-code #\space))
+ ((string= cname "tab") (char-code #\tab))
+ ((string= cname "newline") (char-code #\newline))
+ (t (char-code (char cname 0))))))
+ (#\+
+ (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.")))))))
+
+(defvar *eof* (make-symbol "EOF"))
+(defun ls-read (stream)
+ (skip-whitespaces-and-comments stream)
+ (let ((ch (%peek-char stream)))
+ (cond
+ ((null ch)
+ *eof*)
+ ((char= ch #\()
+ (%read-char stream)
+ (%read-list stream))
+ ((char= ch #\')
+ (%read-char stream)
+ (list 'quote (ls-read stream)))
+ ((char= ch #\`)
+ (%read-char stream)
+ (list 'backquote (ls-read stream)))
+ ((char= ch #\")
+ (%read-char stream)
+ (read-string stream))
+ ((char= ch #\,)
+ (%read-char stream)
+ (if (eql (%peek-char stream) #\@)
+ (progn (%read-char stream) (list 'unquote-splicing (ls-read stream)))
+ (list 'unquote (ls-read stream))))
+ ((char= ch #\#)
+ (read-sharp stream))
+ (t
+ (let ((string (read-until stream #'terminalp)))
+ (if (every #'digit-char-p string)
+ (parse-integer string)
+ (intern (string-upcase string))))))))
+
+(defun ls-read-from-string (string)
+ (ls-read (make-string-stream string)))
+
+
+;;;; Compiler
+
+;;; Translate the Lisp code to Javascript. It will compile the special
+;;; forms. Some primitive functions are compiled as special forms
+;;; too. The respective real functions are defined in the target (see
+;;; the beginning of this file) as well as some primitive functions.
+
+(defvar *compilation-unit-checks* '())
+
+(defvar *env* '())
+(defvar *fenv* '())
+
+(defun make-binding (name type js declared)
+ (list name type js declared))
+
+(defun binding-name (b) (first b))
+(defun binding-type (b) (second b))
+(defun binding-translation (b) (third b))
+(defun binding-declared (b)
+ (and b (fourth b)))
+(defun mark-binding-as-declared (b)
+ (setcar (cdddr b) t))
+
+(defvar *variable-counter* 0)
+(defun gvarname (symbol)
+ (concat "v" (integer-to-string (incf *variable-counter*))))
+
+(defun lookup-variable (symbol env)
+ (or (assoc symbol env)
+ (assoc symbol *env*)
+ (let ((name (symbol-name symbol))
+ (binding (make-binding symbol 'variable (gvarname symbol) nil)))
+ (push binding *env*)
+ (push (lambda ()
+ (unless (binding-declared (assoc symbol *env*))
+ (error (concat "Undefined variable `" name "'"))))
+ *compilation-unit-checks*)
+ binding)))
+
+(defun lookup-variable-translation (symbol env)
+ (binding-translation (lookup-variable symbol env)))
+
+(defun extend-local-env (args env)
+ (append (mapcar (lambda (symbol)
+ (make-binding symbol 'variable (gvarname symbol) t))
+ args)
+ env))
+
+(defvar *function-counter* 0)
+(defun lookup-function (symbol env)
+ (or (assoc symbol env)
+ (assoc symbol *fenv*)
+ (let ((name (symbol-name symbol))
+ (binding
+ (make-binding symbol
+ 'function
+ (concat "f" (integer-to-string (incf *function-counter*)))
+ nil)))
+ (push binding *fenv*)
+ (push (lambda ()
+ (unless (binding-declared (assoc symbol *fenv*))
+ (error (concat "Undefined function `" name "'"))))
+ *compilation-unit-checks*)
+ binding)))
+
+(defun lookup-function-translation (symbol env)
+ (binding-translation (lookup-function symbol env)))
+
+(defvar *toplevel-compilations* nil)
+
+(defun %compile-defvar (name)
+ (let ((b (lookup-variable name *env*)))
+ (mark-binding-as-declared b)
+ (push (concat "var " (binding-translation b)) *toplevel-compilations*)))
+
+(defun %compile-defun (name)
+ (let ((b (lookup-function name *env*)))
+ (mark-binding-as-declared b)
+ (push (concat "var " (binding-translation b)) *toplevel-compilations*)))
+
+(defun %compile-defmacro (name lambda)
+ (push (make-binding name 'macro lambda t) *fenv*))
+
+(defvar *compilations* nil)
+
+(defun ls-compile-block (sexps env fenv)
+ (join-trailing
+ (remove-if (lambda (x)
+ (or (null x)
+ (and (stringp x)
+ (zerop (length x)))))
+ (mapcar (lambda (x) (ls-compile x env fenv)) sexps))
+ (concat ";" *newline*)))
+
+(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.
+ `(push (list ',name (lambda (env fenv ,@args) ,@body))
+ *compilations*))
+
+(define-compilation if (condition true false)
+ (concat "("
+ (ls-compile condition env fenv) " !== " (ls-compile nil nil nil)
+ " ? "
+ (ls-compile true env fenv)
+ " : "
+ (ls-compile false env fenv)
+ ")"))
+
+
+(defvar *lambda-list-keywords* '(&optional &rest))
+
+(defun list-until-keyword (list)
+ (if (or (null list) (member (car list) *lambda-list-keywords*))
+ nil
+ (cons (car list) (list-until-keyword (cdr list)))))
+
+(defun lambda-list-required-arguments (lambda-list)
+ (list-until-keyword lambda-list))
+
+(defun lambda-list-optional-arguments-with-default (lambda-list)
+ (mapcar #'ensure-list (list-until-keyword (cdr (member '&optional lambda-list)))))
+
+(defun lambda-list-optional-arguments (lambda-list)
+ (mapcar #'car (lambda-list-optional-arguments-with-default lambda-list)))
+
+(defun lambda-list-rest-argument (lambda-list)
+ (let ((rest (list-until-keyword (cdr (member '&rest lambda-list)))))
+ (when (cdr rest)
+ (error "Bad lambda-list"))
+ (car rest)))
+
+(define-compilation lambda (lambda-list &rest body)
+ (let ((required-arguments (lambda-list-required-arguments lambda-list))
+ (optional-arguments (lambda-list-optional-arguments lambda-list))
+ (rest-argument (lambda-list-rest-argument lambda-list)))
+ (let ((n-required-arguments (length required-arguments))
+ (n-optional-arguments (length optional-arguments))
+ (new-env (extend-local-env
+ (append (ensure-list rest-argument)
+ required-arguments
+ optional-arguments)
+ env)))
+ (concat "(function ("
+ (join (mapcar (lambda (x)
+ (lookup-variable-translation x new-env))
+ (append required-arguments optional-arguments))
+ ",")
+ "){" *newline*
+ ;; Check number of arguments
+ (if required-arguments
+ (concat "if (arguments.length < " (integer-to-string n-required-arguments)
+ ") throw 'too few arguments';" *newline*)
+ "")
+ (if (not rest-argument)
+ (concat "if (arguments.length > "
+ (integer-to-string (+ n-required-arguments n-optional-arguments))
+ ") throw 'too many arguments';" *newline*)
+ "")
+ ;; Optional arguments
+ (if optional-arguments
+ (concat "switch(arguments.length){" *newline*
+ (let ((optional-and-defaults
+ (lambda-list-optional-arguments-with-default lambda-list))
+ (cases nil)
+ (idx 0))
+ (progn (while (< idx n-optional-arguments)
+ (let ((arg (nth idx optional-and-defaults)))
+ (push (concat "case "
+ (integer-to-string (+ idx n-required-arguments)) ":" *newline*
+ (lookup-variable-translation (car arg) new-env)
+ "="
+ (ls-compile (cadr arg) new-env fenv)
+ ";" *newline*)
+ cases)
+ (incf idx)))
+ (push (concat "default: break;" *newline*) cases)
+ (join (reverse cases))))
+ "}" *newline*)
+ "")
+ ;; &rest argument
+ (if rest-argument
+ (let ((js!rest (lookup-variable-translation rest-argument new-env)))
+ (concat "var " js!rest "= " (ls-compile nil env fenv) ";" *newline*
+ "for (var i = arguments.length-1; i>="
+ (integer-to-string (+ n-required-arguments n-optional-arguments))
+ "; i--)" *newline*
+ js!rest " = "
+ "{car: arguments[i], cdr: " js!rest "};"
+ *newline*))
+ "")
+ ;; Body
+ (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-translation var fenv)
+ " = "
+ (ls-compile val env fenv)))
+
+(define-compilation setq (var val)
+ (concat (lookup-variable-translation var env)
+ " = "
+ (ls-compile val env fenv)))
+
+;;; 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
+ ((integerp sexp) (integer-to-string 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: "
+ (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))
+
+(define-compilation quote (sexp)
+ (literal sexp))
+
+(define-compilation debug (form)
+ (concat "console.log(" (ls-compile form env fenv) ")"))
+
+(define-compilation while (pred &rest body)
+ (concat "(function(){ while("
+ (ls-compile pred env fenv) " !== " (ls-compile nil nil nil)
+ "){"
+ (ls-compile-block body env fenv)
+ "}})()"))
+
+(define-compilation function (x)
+ (cond
+ ((and (listp x) (eq (car x) 'lambda))
+ (ls-compile x env fenv))
+ ((symbolp x)
+ (lookup-function-translation x fenv))))
+
+(define-compilation eval-when-compile (&rest body)
+ (eval (cons 'progn body))
+ "")
+
+(defmacro define-transformation (name args form)
+ `(define-compilation ,name ,args
+ (ls-compile ,form env fenv)))
+
+(define-compilation progn (&rest body)
+ (concat "(function(){" *newline*
+ (ls-compile-block (butlast body) env fenv)
+ "return " (ls-compile (car (last body)) env fenv) ";"
+ "})()" *newline*))
+
+(define-transformation let (bindings &rest body)
+ (let ((bindings (mapcar #'ensure-list bindings)))
+ `((lambda ,(mapcar #'car bindings) ,@body)
+ ,@(mapcar #'cadr bindings))))
+
+;;; A little backquote implementation without optimizations of any
+;;; kind for lispstrack.
+(defun backquote-expand-1 (form)
+ (cond
+ ((symbolp form)
+ (list 'quote form))
+ ((atom form)
+ form)
+ ((eq (car form) 'unquote)
+ (car form))
+ ((eq (car form) 'backquote)
+ (backquote-expand-1 (backquote-expand-1 (cadr form))))
+ (t
+ (cons 'append
+ (mapcar (lambda (s)
+ (cond
+ ((and (listp s) (eq (car s) 'unquote))
+ (list 'list (cadr s)))
+ ((and (listp s) (eq (car s) 'unquote-splicing))
+ (cadr s))
+ (t
+ (list 'list (backquote-expand-1 s)))))
+ form)))))
+
+(defun backquote-expand (form)
+ (if (and (listp form) (eq (car form) 'backquote))
+ (backquote-expand-1 (cadr form))
+ form))
+
+(defmacro backquote (form)
+ (backquote-expand-1 form))
+
+(define-transformation backquote (form)
+ (backquote-expand-1 form))
+
+;;; Primitives
+
+(defun compile-bool (x)
+ (concat "(" x "?" (ls-compile t nil nil) ": " (ls-compile nil nil nil) ")"))
+
+(define-compilation + (x y)
+ (concat "((" (ls-compile x env fenv) ") + (" (ls-compile y env fenv) "))"))
+
+(define-compilation - (x y)
+ (concat "((" (ls-compile x env fenv) ") - (" (ls-compile y env fenv) "))"))
+
+(define-compilation * (x y)
+ (concat "((" (ls-compile x env fenv) ") * (" (ls-compile y env fenv) "))"))
+
+(define-compilation / (x y)
+ (concat "((" (ls-compile x env fenv) ") / (" (ls-compile y env fenv) "))"))
+
+(define-compilation < (x y)
+ (compile-bool (concat "((" (ls-compile x env fenv) ") < (" (ls-compile y env fenv) "))")))
+
+(define-compilation = (x y)
+ (compile-bool (concat "((" (ls-compile x env fenv) ") == (" (ls-compile y env fenv) "))")))
+
+(define-compilation numberp (x)
+ (compile-bool (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 floor (x)
+ (concat "(Math.floor(" (ls-compile x env fenv) "))"))
+
+(define-compilation null (x)
+ (compile-bool (concat "(" (ls-compile x env fenv) "===" (ls-compile nil env fenv) ")")))
+
+(define-compilation cons (x y)
+ (concat "({car: " (ls-compile x env fenv) ", cdr: " (ls-compile y env fenv) "})"))
+
+(define-compilation consp (x)
+ (compile-bool
+ (concat "(function(){ var tmp = "
+ (ls-compile x env fenv)
+ "; return (typeof tmp == 'object' && 'car' in tmp);})()")))
+
+(define-compilation car (x)
+ (concat "(function () { var tmp = " (ls-compile x env fenv)
+ "; return tmp === " (ls-compile nil nil nil) "? "
+ (ls-compile nil nil nil)
+ ": tmp.car; })()"))
+
+(define-compilation cdr (x)
+ (concat "(function () { var tmp = " (ls-compile x env fenv)
+ "; return tmp === " (ls-compile nil nil nil) "? "
+ (ls-compile nil nil nil)
+ ": tmp.cdr; })()"))
+
+(define-compilation setcar (x new)
+ (concat "((" (ls-compile x env fenv) ").car = " (ls-compile new env fenv) ")"))
+
+(define-compilation setcdr (x new)
+ (concat "((" (ls-compile x env fenv) ").cdr = " (ls-compile new env fenv) ")"))
+
+(define-compilation symbolp (x)
+ (compile-bool
+ (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 symbol-name (x)
+ (concat "(" (ls-compile x env fenv) ").name"))
+
+(define-compilation eq (x y)
+ (compile-bool
+ (concat "(" (ls-compile x env fenv) " === " (ls-compile y env fenv) ")")))
+
+(define-compilation equal (x y)
+ (compile-bool
+ (concat "(" (ls-compile x env fenv) " == " (ls-compile y env fenv) ")")))
+
+(define-compilation string (x)
+ (concat "String.fromCharCode(" (ls-compile x env fenv) ")"))
+
+(define-compilation stringp (x)
+ (compile-bool
+ (concat "(typeof(" (ls-compile x env fenv) ") == \"string\")")))
+
+(define-compilation string-upcase (x)
+ (concat "(" (ls-compile x env fenv) ").toUpperCase()"))
+
+(define-compilation string-length (x)
+ (concat "(" (ls-compile x env fenv) ").length"))
+
+(define-compilation char (string index)
+ (concat "("
+ (ls-compile string env fenv)
+ ").charCodeAt("
+ (ls-compile index env fenv)
+ ")"))
+
+(define-compilation concat-two (string1 string2)
+ (concat "("
+ (ls-compile string1 env fenv)
+ ").concat("
+ (ls-compile string2 env fenv)
+ ")"))
+
+(define-compilation funcall (func &rest args)
+ (concat "("
+ (ls-compile func env fenv)
+ ")("
+ (join (mapcar (lambda (x)
+ (ls-compile x env fenv))
+ args)
+ ", ")
+ ")"))
+
+(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 != " (ls-compile nil env fenv) "){" *newline*
+ " args.push(tail.car);" *newline*
+ " tail = tail.cdr;" *newline*
+ "}" *newline*
+ "return f.apply(this, args);" *newline*
+ "})()" *newline*))))
+
+(define-compilation js-eval (string)
+ (concat "eval.apply(window, [" (ls-compile string env fenv) "])"))
+
+
+(define-compilation error (string)
+ (concat "(function (){ throw " (ls-compile string env fenv) ";" "return 0;})()"))
+
+(define-compilation new ()
+ "{}")
+
+(define-compilation get (object key)
+ (concat "(function(){ var tmp = "
+ "(" (ls-compile object env fenv) ")[" (ls-compile key env fenv) "]"
+ ";"
+ "return tmp == undefined? " (ls-compile nil nil nil) ": tmp ;"
+ "})()"))
+
+(define-compilation set (object key value)
+ (concat "(("
+ (ls-compile object env fenv)
+ ")["
+ (ls-compile key env fenv) "]"
+ " = " (ls-compile value env fenv) ")"))
+
+(define-compilation in (key object)
+ (compile-bool
+ (concat "(" (ls-compile key env fenv) " in " (ls-compile object env fenv) ")")))
+
+(define-compilation functionp (x)
+ (compile-bool
+ (concat "(typeof " (ls-compile x env fenv) " == 'function')")))
+
+
+(defun macrop (x)
+ (and (symbolp x) (eq (binding-type (lookup-function x *fenv*)) 'macro)))
+
+(defun ls-macroexpand-1 (form env fenv)
+ (if (macrop (car form))
+ (let ((binding (lookup-function (car form) *env*)))
+ (if (eq (binding-type binding) 'macro)
+ (apply (eval (binding-translation binding)) (cdr form))
+ form))
+ form))
+
+(defun compile-funcall (function args env fenv)
+ (cond
+ ((symbolp function)
+ (concat (lookup-function-translation function fenv)
+ "("
+ (join (mapcar (lambda (x) (ls-compile x env fenv)) args)
+ ", ")
+ ")"))
+ ((and (listp function) (eq (car function) 'lambda))
+ (concat "(" (ls-compile function env fenv) ")("
+ (join (mapcar (lambda (x) (ls-compile x env fenv)) args)
+ ", ")
+ ")"))
+ (t
+ (error (concat "Invalid function designator " (symbol-name function))))))
+
+(defun ls-compile (sexp env fenv)
+ (cond
+ ((symbolp sexp) (lookup-variable-translation sexp env))
+ ((integerp sexp) (integer-to-string sexp))
+ ((stringp sexp) (concat "\"" (escape-string sexp) "\""))
+ ((listp sexp)
+ (if (assoc (car sexp) *compilations*)
+ (let ((comp (second (assoc (car sexp) *compilations*))))
+ (apply comp env fenv (cdr sexp)))
+ (if (macrop (car sexp))
+ (ls-compile (ls-macroexpand-1 sexp env fenv) env fenv)
+ (compile-funcall (car sexp) (cdr sexp) env fenv))))))
+
+(defun ls-compile-toplevel (sexp)
+ (setq *toplevel-compilations* nil)
+ (let ((code (ls-compile sexp nil nil)))
+ (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
+;;; interactive development (eval), which works calling the compiler
+;;; and evaluating the Javascript result globally.
+
+#+lispstrack
+(progn
+ (defmacro with-compilation-unit (&rest body)
+ `(prog1
+ (progn
+ (setq *compilation-unit-checks* nil)
+ (setq *env* (remove-if-not #'binding-declared *env*))
+ (setq *fenv* (remove-if-not #'binding-declared *fenv*))
+ ,@body)
+ (dolist (check *compilation-unit-checks*)
+ (funcall check))))
+
+ (defun eval (x)
+ (let ((code
+ (with-compilation-unit
+ (ls-compile-toplevel x))))
+ (js-eval code)))
+
+ ;; Set the initial global environment to be equal to the host global
+ ;; environment at this point of the compilation.
+ (eval-when-compile
+ (let ((c1 (ls-compile `(setq *fenv* ',*fenv*) nil nil))
+ (c2 (ls-compile `(setq *env* ',*env*) nil nil))
+ (c3 (ls-compile `(setq *variable-counter* ',*variable-counter*) nil nil))
+ (c4 (ls-compile `(setq *function-counter* ',*function-counter*) nil nil))
+ (c5 (ls-compile `(setq *literal-counter* ',*literal-counter*) nil nil)))
+ (setq *toplevel-compilations*
+ (append *toplevel-compilations* (list c1 c2 c3 c4 c5)))))
+
+ (js-eval
+ (concat "var lisp = {};"
+ "lisp.read = " (lookup-function-translation 'ls-read-from-string nil) ";" *newline*
+ "lisp.print = " (lookup-function-translation 'print-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*)))
+