-(in-package :parenscript)
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; literals
-(defmacro defpsliteral (name string)
- `(define-ps-special-form ,name (expecting)
- (declare (ignore expecting))
- (list 'js-literal ,string)))
-
-(defpsliteral this "this")
-(defpsliteral t "true")
-(defpsliteral true "true")
-(defpsliteral false "false")
-(defpsliteral f "false")
-(defpsliteral nil "null")
-(defpsliteral undefined "undefined")
-
-(defpsliteral break "break")
-(defpsliteral continue "continue")
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; unary operators
-(mapcar (lambda (op) (eval `(define-ps-special-form ,op (expecting value)
- (declare (ignore expecting))
- (list 'js-named-operator ',op (compile-parenscript-form value)))))
- '(throw delete void typeof new))
-
-(define-ps-special-form return (expecting &optional value)
- (declare (ignore expecting))
- (list 'js-return (compile-parenscript-form value :expecting :expression)))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; arrays
-(define-ps-special-form array (expecting &rest values)
- (declare (ignore expecting))
- (cons 'array-literal (mapcar (lambda (form) (compile-parenscript-form form :expecting :expression))
- values)))
-
-(define-ps-special-form aref (expecting array &rest coords)
- (declare (ignore expecting))
- (list 'js-aref (compile-parenscript-form array :expecting :expression)
- (mapcar (lambda (form)
- (compile-parenscript-form form :expecting :expression))
- coords)))
-
-(define-ps-special-form {} (expecting &rest arrows)
- (declare (ignore expecting))
- (cons 'object-literal (loop for (key value) on arrows by #'cddr
- collect (cons key (compile-parenscript-form value :expecting :expression)))))
-
-(defpsmacro list (&rest values)
- `(array ,@values))
-
-(defpsmacro make-array (&rest inits)
- `(new (*array ,@inits)))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; operators
-(define-ps-special-form incf (expecting x &optional (delta 1))
- (declare (ignore expecting))
- (if (equal delta 1)
- (list 'unary-operator "++" (compile-parenscript-form x :expecting :expression) :prefix t)
- (list 'operator '+= (list (compile-parenscript-form x :expecting :expression)
- (compile-parenscript-form delta :expecting :expression)))))
-
-(define-ps-special-form decf (expecting x &optional (delta 1))
- (declare (ignore expecting))
- (if (equal delta 1)
- (list 'unary-operator "--" (compile-parenscript-form x :expecting :expression) :prefix t)
- (list 'operator '-= (list (compile-parenscript-form x :expecting :expression)
- (compile-parenscript-form delta :expecting :expression)))))
-
-(define-ps-special-form - (expecting first &rest rest)
- (declare (ignore expecting))
- (if (null rest)
- (list 'unary-operator "-" (compile-parenscript-form first :expecting :expression) :prefix t)
- (list 'operator '- (mapcar (lambda (val) (compile-parenscript-form val :expecting :expression))
- (cons first rest)))))
-
-(define-ps-special-form not (expecting x)
- (declare (ignore expecting))
- (let ((form (compile-parenscript-form x :expecting :expression))
- (not-op nil))
- (if (and (eql (first form) 'operator)
- (= (length (third form)) 2)
- (setf not-op (case (second form)
- (== '!=)
- (< '>=)
- (> '<=)
- (<= '>)
- (>= '<)
- (!= '==)
- (=== '!==)
- (!== '===)
- (t nil))))
- (list 'operator not-op (third form))
- (list 'unary-operator "!" form :prefix t))))
-
-(define-ps-special-form ~ (expecting x)
- (declare (ignore expecting))
- (list 'unary-operator "~" (compile-parenscript-form x :expecting :expression) :prefix t))
-
-(defpsmacro 1- (form)
- `(- ,form 1))
-
-(defpsmacro 1+ (form)
- `(+ ,form 1))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; control structures
-(defun flatten-blocks (body)
- (when body
- (if (and (listp (car body))
- (eql 'js-block (caar body)))
- (append (third (car body)) (flatten-blocks (cdr body)))
- (cons (car body) (flatten-blocks (cdr body))))))
-
-(defun constant-literal-form-p (form)
- (or (numberp form)
- (stringp form)
- (and (listp form)
- (eql 'js-literal (car form)))))
-
-(define-ps-special-form progn (expecting &rest body)
- (if (and (eql expecting :expression) (= 1 (length body)))
- (compile-parenscript-form (car body) :expecting :expression)
- (list 'js-block
- expecting
- (let* ((block (mapcar (lambda (form)
- (compile-parenscript-form form :expecting expecting))
- body))
- (clean-block (remove nil block))
- (flat-block (flatten-blocks clean-block))
- (reachable-block (append (remove-if #'constant-literal-form-p (butlast flat-block))
- (last flat-block))))
- reachable-block))))
-
-(define-ps-special-form cond (expecting &rest clauses)
- (ecase expecting
- (:statement (list 'js-cond-statement
- (mapcar (lambda (clause)
- (destructuring-bind (test &rest body)
- clause
- (list (compile-parenscript-form test :expecting :expression)
- (compile-parenscript-form `(progn ,@body) :expecting :statement))))
- clauses)))
- (:expression (make-cond-clauses-into-nested-ifs clauses))))
-
-(defun make-cond-clauses-into-nested-ifs (clauses)
- (if clauses
- (destructuring-bind (test &rest body)
- (car clauses)
- (if (eq t test)
- (compile-parenscript-form `(progn ,@body) :expecting :expression)
- (list 'js-expression-if (compile-parenscript-form test :expecting :expression)
- (compile-parenscript-form `(progn ,@body) :expecting :expression)
- (make-cond-clauses-into-nested-ifs (cdr clauses)))))
- (compile-parenscript-form nil :expecting :expression)))
-
-(define-ps-special-form if (expecting test then &optional else)
- (ecase expecting
- (:statement (list 'js-statement-if (compile-parenscript-form test :expecting :expression)
- (compile-parenscript-form `(progn ,then))
- (when else (compile-parenscript-form `(progn ,else)))))
- (:expression (list 'js-expression-if (compile-parenscript-form test :expecting :expression)
- (compile-parenscript-form then :expecting :expression)
- (compile-parenscript-form else :expecting :expression)))))
-
-(define-ps-special-form switch (expecting test-expr &rest clauses)
- (declare (ignore expecting))
- (let ((clauses (mapcar (lambda (clause)
- (let ((val (car clause))
- (body (cdr clause)))
- (cons (if (eql val 'default)
- 'default
- (compile-parenscript-form val :expecting :expression))
- (mapcar (lambda (statement) (compile-parenscript-form statement :expecting :statement))
- body))))
- clauses))
- (expr (compile-parenscript-form test-expr :expecting :expression)))
- (list 'js-switch expr clauses)))
-
-(defpsmacro case (value &rest clauses)
- (labels ((make-clause (val body more)
- (cond ((listp val)
- (append (mapcar #'list (butlast val))
- (make-clause (first (last val)) body more)))
- ((member val '(t otherwise))
- (make-clause 'default body more))
- (more `((,val ,@body break)))
- (t `((,val ,@body))))))
- `(switch ,value ,@(mapcon (lambda (clause)
- (make-clause (car (first clause))
- (cdr (first clause))
- (rest clause)))
- clauses))))
-
-(defpsmacro when (test &rest body)
- `(if ,test (progn ,@body)))
-
-(defpsmacro unless (test &rest body)
- `(if (not ,test) (progn ,@body)))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; function definition
-(defun compile-function-definition (args body)
- (list (mapcar (lambda (arg) (compile-parenscript-form arg :expecting :symbol)) args)
- (let ((*enclosing-lexical-block-declarations* ()))
- ;; the first compilation will produce a list of variables we need to declare in the function body
- (compile-parenscript-form `(progn ,@body) :expecting :statement)
- ;; now declare and compile
- (compile-parenscript-form `(progn ,@(loop for var in *enclosing-lexical-block-declarations* collect `(defvar ,var))
- ,@body) :expecting :statement))))
-
-(define-ps-special-form %js-lambda (expecting args &rest body)
- (declare (ignore expecting))
- (cons 'js-lambda (compile-function-definition args body)))
-
-(define-ps-special-form %js-defun (expecting name args &rest body)
- (declare (ignore expecting))
- (append (list 'js-defun name) (compile-function-definition args body)))
-
-(defun parse-function-body (body)
- (let* ((docstring
- (when (stringp (first body))
- (first body)))
- (body-forms (if docstring (rest body) body)))
- (values body-forms docstring)))
-
-(defun parse-key-spec (key-spec)
- "parses an &key parameter. Returns 4 values:
-var, init-form, keyword-name, supplied-p-var, init-form-supplied-p.
-
-Syntax of key spec:
-[&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}*
-"
- (let* ((var (cond ((symbolp key-spec) key-spec)
- ((and (listp key-spec) (symbolp (first key-spec))) (first key-spec))
- ((and (listp key-spec) (listp (first key-spec))) (second key-spec))))
- (keyword-name (if (and (listp key-spec) (listp (first key-spec)))
- (first (first key-spec))
- (intern (string var) :keyword)))
- (init-form (if (listp key-spec) (second key-spec) nil))
- (init-form-supplied-p (if (listp key-spec) t nil))
- (supplied-p-var (if (listp key-spec) (third key-spec) nil)))
- (values var init-form keyword-name supplied-p-var init-form-supplied-p)))
-
-(defun parse-optional-spec (spec)
- "Parses an &optional parameter. Returns 3 values: var, init-form, supplied-p-var.
-[&optional {var | (var [init-form [supplied-p-parameter]])}*] "
- (let* ((var (cond ((symbolp spec) spec)
- ((and (listp spec) (first spec)))))
- (init-form (if (listp spec) (second spec)))
- (supplied-p-var (if (listp spec) (third spec))))
- (values var init-form supplied-p-var)))
-
-(defun parse-aux-spec (spec)
- "Returns two values: variable and init-form"
- ;; [&aux {var | (var [init-form])}*])
- (values (if (symbolp spec) spec (first spec))
- (when (listp spec) (second spec))))
-
-(defpsmacro defaultf (place value)
- `(setf ,place (or (and (=== undefined ,place) ,value)
- ,place)))
-
-(defun parse-extended-function (lambda-list body &optional name)
- "Returns two values: the effective arguments and body for a function with
-the given lambda-list and body."
-
- ;; The lambda list is transformed as follows, since a javascript lambda list is just a
- ;; list of variable names, and you have access to the arguments variable inside the function:
- ;; * standard variables are the mapped directly into the js-lambda list
- ;; * optional variables' variable names are mapped directly into the lambda list,
- ;; and for each optional variable with name v and default value d, a form is produced
- ;; (defaultf v d)
- ;; * when any keyword variables are in the lambda list, a single 'optional-args' variable is
- ;; appended to the js-lambda list as the last argument. WITH-SLOTS is used for all
- ;; the variables with inside the body of the function,
- ;; a (with-slots ((var-name key-name)) optional-args ...)
- (declare (ignore name))
- (multiple-value-bind (requireds optionals rest? rest keys? keys allow? aux? aux
- more? more-context more-count key-object)
- (parse-lambda-list lambda-list)
- (declare (ignore allow? aux? aux more? more-context more-count))
- (let* ((options-var (or key-object (ps-gensym)))
- ;; optionals are of form (var default-value)
- (effective-args
- (remove-if
- #'null
- (append requireds
- (mapcar #'parse-optional-spec optionals)
- (when keys (list options-var)))))
- ;; an alist of arg -> default val
- (initform-pairs
- (remove
- nil
- (append
- ;; optional arguments first
- (mapcar #'(lambda (opt-spec)
- (multiple-value-bind (var val) (parse-optional-spec opt-spec)
- (cons var val)))
- optionals)
- (if keys? (list (cons options-var '(create))))
- (mapcar #'(lambda (key-spec)
- (multiple-value-bind (var val x y specified?) (parse-key-spec key-spec)
- (declare (ignore x y))
- (when specified? (cons var val))))
- keys))))
- (body-paren-forms (parse-function-body body)) ;remove documentation
- ;;
- (initform-forms
- (mapcar #'(lambda (default-pair)
- `(defaultf ,(car default-pair) ,(cdr default-pair)))
- initform-pairs))
- (rest-form
- (if rest?
- (with-ps-gensyms (i)
- `(progn (defvar ,rest array)
- (dotimes (,i (- arguments.length ,(length effective-args)))
- (setf (aref ,rest ,i) (aref arguments (+ ,i ,(length effective-args)))))))
- `(progn)))
- (effective-body (append initform-forms (list rest-form) body-paren-forms))
- (effective-body
- (if keys?
- (list `(with-slots ,(mapcar #'(lambda (key-spec)
- (multiple-value-bind (var x key-name)
- (parse-key-spec key-spec)
- (declare (ignore x))
- (list var key-name)))
- keys)
- ,options-var
- ,@effective-body))
- effective-body)))
- (values effective-args effective-body))))
-
-(defpsmacro defun (name lambda-list &body body)
- "An extended defun macro that allows cool things like keyword arguments.
-lambda-list::=
- (var*
- [&optional {var | (var [init-form [supplied-p-parameter]])}*]
- [&rest var]
- [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* [&allow-other-keys]]
- [&aux {var | (var [init-form])}*])"
- (if (symbolp name)
- `(defun-function ,name ,lambda-list ,@body)
- (progn (assert (and (= (length name) 2) (eql 'setf (car name))) ()
- "(defun ~s ~s ...) needs to have a symbol or (setf symbol) for a name." name lambda-list)
- `(defun-setf ,name ,lambda-list ,@body))))
-
-(defpsmacro defun-function (name lambda-list &body body)
- (multiple-value-bind (effective-args effective-body)
- (parse-extended-function lambda-list body name)
- `(%js-defun ,name ,effective-args
- ,@effective-body)))
-
-(defvar *defun-setf-name-prefix* "__setf_")
-
-(defpsmacro defun-setf (setf-name lambda-list &body body)
- (let ((mangled-function-name (intern (concatenate 'string *defun-setf-name-prefix* (symbol-name (second setf-name)))
- (symbol-package (second setf-name))))
- (function-args (cdr (ordered-set-difference lambda-list lambda-list-keywords))))
- `(progn (defsetf ,(second setf-name) ,(cdr lambda-list) (store-var)
- `(,',mangled-function-name ,store-var ,@(list ,@function-args)))
- (defun ,mangled-function-name ,lambda-list ,@body))))
-
-(defpsmacro lambda (lambda-list &body body)
- "An extended defun macro that allows cool things like keyword arguments.
-lambda-list::=
- (var*
- [&optional {var | (var [init-form [supplied-p-parameter]])}*]
- [&rest var]
- [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* [&allow-other-keys]]
- [&aux {var | (var [init-form])}*])"
- (multiple-value-bind (effective-args effective-body)
- (parse-extended-function lambda-list body)
- `(%js-lambda ,effective-args
- ,@effective-body)))
-
-(defpsmacro defsetf-long (access-fn lambda-list (store-var) form)
- (setf (get-macro-spec access-fn *script-setf-expanders*)
- (compile nil
- (let ((var-bindings (ordered-set-difference lambda-list lambda-list-keywords)))
- `(lambda (access-fn-args store-form)
- (destructuring-bind ,lambda-list
- access-fn-args
- (let* ((,store-var (ps-gensym))
- (gensymed-names (loop repeat ,(length var-bindings) collecting (ps-gensym)))
- (gensymed-arg-bindings (mapcar #'list gensymed-names (list ,@var-bindings))))
- (destructuring-bind ,var-bindings
- gensymed-names
- `(let (,@gensymed-arg-bindings
- (,,store-var ,store-form))
- ,,form))))))))
- nil)
-
-(defpsmacro defsetf-short (access-fn update-fn &optional docstring)
- (declare (ignore docstring))
- (setf (get-macro-spec access-fn *script-setf-expanders*)
- (lambda (access-fn-args store-form)
- `(,update-fn ,@access-fn-args ,store-form)))
- nil)
-
-(defpsmacro defsetf (access-fn &rest args)
- `(,(if (= (length args) 3) 'defsetf-long 'defsetf-short) ,access-fn ,@args))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; macros
-(defmacro with-temp-macro-environment ((var) &body body)
- `(let* ((,var (make-macro-env-dictionary))
- (*script-macro-env* (cons ,var *script-macro-env*)))
- ,@body))
-
-(define-ps-special-form macrolet (expecting macros &body body)
- (declare (ignore expecting))
- (with-temp-macro-environment (macro-env-dict)
- (dolist (macro macros)
- (destructuring-bind (name arglist &body body)
- macro
- (setf (get-macro-spec name macro-env-dict)
- (cons nil (make-ps-macro-function arglist body)))))
- (compile-parenscript-form `(progn ,@body))))
-
-(define-ps-special-form symbol-macrolet (expecting symbol-macros &body body)
- (declare (ignore expecting))
- (with-temp-macro-environment (macro-env-dict)
- (dolist (macro symbol-macros)
- (destructuring-bind (name expansion)
- macro
- (setf (get-macro-spec name macro-env-dict)
- (cons t (make-ps-macro-function () (list `',expansion))))))
- (compile-parenscript-form `(progn ,@body))))
-
-(define-ps-special-form defmacro (expecting name args &body body)
- (declare (ignore expecting))
- (define-script-macro% name args body :symbol-macro-p nil)
- nil)
-
-(define-ps-special-form define-symbol-macro (expecting name expansion)
- (declare (ignore expecting))
- (define-script-macro% name () (list `',expansion) :symbol-macro-p t)
- nil)
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; objects
-(define-ps-special-form create (expecting &rest args)
- (declare (ignore expecting))
- (list 'js-object (loop for (name val) on args by #'cddr collecting
- (let ((name-expr (compile-parenscript-form name :expecting :expression)))
- (assert (or (stringp name-expr)
- (numberp name-expr)
- (and (listp name-expr)
- (or (eql 'js-variable (car name-expr))
- (eql 'script-quote (car name-expr)))))
- ()
- "Slot ~s is not one of js-variable, keyword, string or number." name-expr)
- (list name-expr (compile-parenscript-form val :expecting :expression))))))
-
-(define-ps-special-form %js-slot-value (expecting obj slot)
- (declare (ignore expecting))
- (if (ps::ps-macroexpand slot)
- (list 'js-slot-value (compile-parenscript-form obj :expecting :expression) (compile-parenscript-form slot))
- (compile-parenscript-form obj :expecting :expression)))
-
-(define-ps-special-form instanceof (expecting value type)
- (declare (ignore expecting))
- (list 'js-instanceof (compile-parenscript-form value :expecting :expression)
- (compile-parenscript-form type :expecting :expression)))
-
-(defpsmacro slot-value (obj &rest slots)
- (if (null (rest slots))
- `(%js-slot-value ,obj ,(first slots))
- `(slot-value (slot-value ,obj ,(first slots)) ,@(rest slots))))
-
-(defpsmacro with-slots (slots object &rest body)
- (flet ((slot-var (slot) (if (listp slot) (first slot) slot))
- (slot-symbol (slot) (if (listp slot) (second slot) slot)))
- `(symbol-macrolet ,(mapcar #'(lambda (slot)
- `(,(slot-var slot) (slot-value ,object ',(slot-symbol slot))))
- slots)
- ,@body)))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; assignment and binding
-(defun assignment-op (op)
- (case op
- (+ '+=)
- (~ '~=)
- (\& '\&=)
- (\| '\|=)
- (- '-=)
- (* '*=)
- (% '%=)
- (>> '>>=)
- (^ '^=)
- (<< '<<=)
- (>>> '>>>=)
- (/ '/=)
- (t nil)))
-
-(defun smart-setf (lhs rhs)
- (if (and (listp rhs)
- (eql 'operator (car rhs))
- (member lhs (third rhs) :test #'equalp))
- (let ((args-without (remove lhs (third rhs) :count 1 :test #'equalp))
- (args-without-first (remove lhs (third rhs) :count 1 :end 1 :test #'equalp)))
- (cond ((and (equal (car args-without) 1) (eql (second rhs) '+))
- (list 'unary-operator "++" lhs :prefix nil))
- ((and (equal (second args-without-first) 1) (eql (second rhs) '-))
- (list 'unary-operator "--" lhs :prefix nil))
- ((and (assignment-op (second rhs))
- (member (second rhs) '(+ *))
- (equalp lhs (first (third rhs))))
- (list 'operator (assignment-op (second rhs))
- (list lhs (list 'operator (second rhs) args-without-first))))
- ((and (assignment-op (second rhs)) (equalp (first (third rhs)) lhs))
- (list 'operator (assignment-op (second rhs))
- (list lhs (list 'operator (second rhs) (cdr (third rhs))))))
- (t (list 'js-assign lhs rhs))))
- (list 'js-assign lhs rhs)))
-
-(define-ps-special-form setf1% (expecting lhs rhs)
- (declare (ignore expecting))
- (smart-setf (compile-parenscript-form lhs :expecting :expression) (compile-parenscript-form rhs :expecting :expression)))
-
-(defpsmacro setf (&rest args)
- (flet ((process-setf-clause (place value-form)
- (if (and (listp place) (get-macro-spec (car place) *script-setf-expanders*))
- (funcall (get-macro-spec (car place) *script-setf-expanders*) (cdr place) value-form)
- (let ((exp-place (ps-macroexpand place)))
- (if (and (listp exp-place) (get-macro-spec (car exp-place) *script-setf-expanders*))
- (funcall (get-macro-spec (car exp-place) *script-setf-expanders*) (cdr exp-place) value-form)
- `(setf1% ,exp-place ,value-form))))))
- (assert (evenp (length args)) ()
- "~s does not have an even number of arguments." (cons 'setf args))
- `(progn ,@(loop for (place value) on args by #'cddr collect (process-setf-clause place value)))))
-
-(define-ps-special-form defvar (expecting name &rest value)
- (declare (ignore expecting))
- (append (list 'js-defvar name)
- (when value
- (assert (= (length value) 1) () "Wrong number of arguments to defvar: ~s" `(defvar ,name ,@value))
- (list (compile-parenscript-form (car value) :expecting :expression)))))
-
-(defpsmacro lexical-let (bindings &body body)
- "A let form that does actual lexical binding of variables. This is
-currently expensive in JavaScript since we have to cons up and call a
-lambda."
- `((lambda ()
- (let ((new-context (new *object)))
- ,@(loop for binding in bindings
- collect `(setf (slot-value new-context ,(symbol-to-js (if (atom binding) binding (first binding))))
- ,(when (listp binding) (second binding))))
- (with new-context ,@body)))))
-
-(define-ps-special-form let (expecting bindings &rest body)
- (ecase expecting
- (:statement
- (let ((defvars (mapcar (lambda (binding) (if (atom binding)
- `(defvar ,binding)
- `(defvar ,@binding)))
- bindings)))
- (compile-parenscript-form `(progn ,@defvars ,@body) :expecting :statement)))
- (:expression
- (let ((declared-variables (mapcar (lambda (binding) (if (atom binding) binding (car binding))) bindings))
- (variable-assignments (loop for b in bindings when (listp b) collect (cons 'setf b))))
- (setf *enclosing-lexical-block-declarations* (append declared-variables *enclosing-lexical-block-declarations*))
- (compile-parenscript-form `(progn ,@variable-assignments ,@body) :expecting :expression)))))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; iteration
-(defun make-for-vars (decls)
- (loop for decl in decls
- for var = (if (atom decl) decl (first decl))
- for init-value = (if (atom decl) nil (second decl))
- collect (cons (compile-parenscript-form var :expecting :symbol) (compile-parenscript-form init-value))))
-
-(defun make-for-steps (decls)
- (loop for decl in decls
- when (= (length decl) 3)
- collect (compile-parenscript-form (third decl) :expecting :expression)))
-
-(define-ps-special-form do (expecting decls termination-test &rest body)
- (declare (ignore expecting))
- (let ((vars (make-for-vars decls))
- (steps (make-for-steps decls))
- (test (compile-parenscript-form `(not ,(first termination-test)) :expecting :expression))
- (body (compile-parenscript-form `(progn ,@body))))
- (list 'js-for vars steps test body)))
-
-(define-ps-special-form doeach (expecting decl &rest body)
- (declare (ignore expecting))
- (list 'js-for-each
- (first decl)
- (compile-parenscript-form (second decl) :expecting :expression)
- (compile-parenscript-form `(progn ,@body))))
-
-(define-ps-special-form while (expecting test &rest body)
- (declare (ignore expecting))
- (list 'js-while (compile-parenscript-form test :expecting :expression)
- (compile-parenscript-form `(progn ,@body))))
-
-(defpsmacro dotimes (iter &rest body)
- (let ((var (first iter))
- (times (second iter)))
- `(do ((,var 0 (1+ ,var)))
- ((>= ,var ,times))
- ,@body)))
-
-(defpsmacro dolist (i-array &rest body)
- (let ((var (first i-array))
- (array (second i-array))
- (arrvar (ps-gensym "tmp-arr"))
- (idx (ps-gensym "tmp-i")))
- `(let ((,arrvar ,array))
- (do ((,idx 0 (1+ ,idx)))
- ((>= ,idx (slot-value ,arrvar 'length)))
- (let ((,var (aref ,arrvar ,idx)))
- ,@body)))))
-
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;;; misc
-(define-ps-special-form with (expecting expression &rest body)
- (declare (ignore expecting))
- (list 'js-with (compile-parenscript-form expression :expecting :expression)
- (compile-parenscript-form `(progn ,@body))))
-
-(define-ps-special-form try (expecting form &rest clauses)
- (declare (ignore expecting))
- (let ((catch (cdr (assoc :catch clauses)))
- (finally (cdr (assoc :finally clauses))))
- (assert (not (cdar catch)) nil "Sorry, currently only simple catch forms are supported.")
- (assert (or catch finally) ()
- "Try form should have either a catch or a finally clause or both.")
- (list 'js-try (compile-parenscript-form `(progn ,form))
- :catch (when catch (list (compile-parenscript-form (caar catch) :expecting :symbol)
- (compile-parenscript-form `(progn ,@(cdr catch)))))
- :finally (when finally (compile-parenscript-form `(progn ,@finally))))))
-
-(define-ps-special-form cc-if (expecting test &rest body)
- (declare (ignore expecting))
- (list 'cc-if test (mapcar #'compile-parenscript-form body)))
-
-(define-ps-special-form regex (expecting regex)
- (declare (ignore expecting))
- (list 'js-regex (string regex)))
-
-(defpsmacro lisp (&body forms)
- "Evaluates the given forms in Common Lisp at ParenScript
-macro-expansion time. The value of the last form is treated as a
-ParenScript expression and is inserted into the generated Javascript
-\(use nil for no-op)."
- (eval (cons 'progn forms)))
-
-(defpsmacro dynamic-bind (bindings &body body)
- `(macrolet ((dynamic-bind ((var expr) body)
- (with-ps-gensyms (temp)
- `(progn (defvar ,temp nil)
- (try (progn (setf ,temp ,var)
- (setf ,var ,expr)
- ,@body)
- (:finally (setf ,var ,temp)))))))
- ,(cons 'progn (wrap-expr bindings body))))
\ No newline at end of file
+(in-package "PARENSCRIPT")
+
+(defmacro with-local-macro-environment ((var env) &body body)
+ `(let* ((,var (make-macro-dictionary))
+ (,env (cons ,var ,env)))
+ ,@body))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; literals
+(defmacro defpsliteral (name string)
+ `(progn
+ (add-ps-reserved-symbol ',name)
+ (define-ps-special-form ,name ()
+ (list 'js:literal ,string))))
+
+(defpsliteral this "this")
+(defpsliteral t "true")
+(defpsliteral true "true")
+(defpsliteral false "false")
+(defpsliteral f "false")
+(defpsliteral nil "null")
+(defpsliteral undefined "undefined")
+
+(macrolet ((def-for-literal (name printer)
+ `(progn
+ (add-ps-reserved-symbol ',name)
+ (define-ps-special-form ,name (&optional label)
+ (list ',printer label)))))
+ (def-for-literal break js:break)
+ (def-for-literal continue js:continue))
+
+(define-ps-special-form quote (x)
+ (ps-compile-expression
+ (typecase x
+ (cons `(array ,@(mapcar (lambda (x) (when x `',x)) x)))
+ (null '(array))
+ (keyword x)
+ (symbol (symbol-to-js-string x))
+ (number x)
+ (string x))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; unary operators
+(macrolet ((def-unary-ops (&rest ops)
+ `(progn ,@(mapcar (lambda (op)
+ (let ((op (if (listp op) (car op) op))
+ (spacep (if (listp op) (second op) nil)))
+ `(define-ps-special-form ,op (x)
+ (list 'js:unary-operator ',op
+ (ps-compile-expression (ps-macroexpand x))
+ :prefix t :space ,spacep))))
+ ops))))
+ (def-unary-ops ~ ! (new t) (delete t) (void t) (typeof t)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; statements
+(define-ps-special-form return (&optional value)
+ `(js:return ,(ps-compile-expression (ps-macroexpand value))))
+
+(define-ps-special-form throw (value)
+ `(js:throw ,(ps-compile-expression (ps-macroexpand value))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; arrays
+(define-ps-special-form array (&rest values)
+ `(js:array ,@(mapcar (lambda (form) (ps-compile-expression (ps-macroexpand form)))
+ values)))
+
+(define-ps-special-form aref (array &rest coords)
+ `(js:aref ,(ps-compile-expression (ps-macroexpand array))
+ ,(mapcar (lambda (form)
+ (ps-compile-expression (ps-macroexpand form)))
+ coords)))
+
+(defpsmacro list (&rest values)
+ `(array ,@values))
+
+(defpsmacro make-array (&rest initial-values)
+ `(new (*array ,@initial-values)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; operators
+(define-ps-special-form incf (x &optional (delta 1))
+ (let ((x (ps-macroexpand x))
+ (delta (ps-macroexpand delta)))
+ (if (eql delta 1)
+ `(js:unary-operator js:++ ,(ps-compile-expression x) :prefix t)
+ `(js:operator js:+= ,(ps-compile-expression x)
+ ,(ps-compile-expression delta)))))
+
+(define-ps-special-form decf (x &optional (delta 1))
+ (let ((x (ps-macroexpand x))
+ (delta (ps-macroexpand delta)))
+ (if (eql delta 1)
+ `(js:unary-operator js:-- ,(ps-compile-expression x) :prefix t)
+ `(js:operator js:-= ,(ps-compile-expression x)
+ ,(ps-compile-expression delta)))))
+
+(define-ps-special-form - (first &rest rest)
+ (let ((first (ps-macroexpand first))
+ (rest (mapcar #'ps-macroexpand rest)))
+ (if rest
+ `(js:operator js:- ,@(mapcar (lambda (val) (ps-compile-expression val))
+ (cons first rest)))
+ `(js:unary-operator js:- ,(ps-compile-expression first) :prefix t))))
+
+(define-ps-special-form not (x)
+ (let ((form (ps-compile-expression (ps-macroexpand x)))
+ inverse-op)
+ (if (and (eq (car form) 'js:operator)
+ (= (length (cddr form)) 2)
+ (setf inverse-op (case (cadr form)
+ (== '!=)
+ (< '>=)
+ (> '<=)
+ (<= '>)
+ (>= '<)
+ (!= '==)
+ (=== '!==)
+ (!== '===))))
+ `(js:operator ,inverse-op ,@(cddr form))
+ `(js:unary-operator js:! ,form :prefix t))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; control structures
+(defun flatten-blocks (body)
+ (when body
+ (if (and (listp (car body))
+ (eq 'js:block (caar body)))
+ (append (cdr (car body)) (flatten-blocks (cdr body)))
+ (cons (car body) (flatten-blocks (cdr body))))))
+
+(defun constant-literal-form-p (form)
+ (or (numberp form)
+ (stringp form)
+ (and (listp form)
+ (eq 'js:literal (car form)))))
+
+(define-ps-special-form progn (&rest body)
+ (let ((body (mapcar #'ps-macroexpand body)))
+ (if (and compile-expression? (= 1 (length body)))
+ (ps-compile-expression (car body))
+ `(,(if compile-expression? 'js:|,| 'js:block)
+ ,@(let* ((block (flatten-blocks (remove nil (mapcar #'ps-compile body)))))
+ (append (remove-if #'constant-literal-form-p (butlast block)) (last block)))))))
+
+(define-ps-special-form cond (&rest clauses)
+ (if compile-expression?
+ (make-cond-clauses-into-nested-ifs clauses)
+ `(js:if ,(ps-compile-expression (caar clauses))
+ ,(ps-compile-statement `(progn ,@(cdar clauses)))
+ ,@(loop for (test . body) in (cdr clauses) appending
+ (if (eq t test)
+ `(:else ,(ps-compile-statement `(progn ,@body)))
+ `(:else-if ,(ps-compile-expression test)
+ ,(ps-compile-statement `(progn ,@body))))))))
+
+(defun make-cond-clauses-into-nested-ifs (clauses)
+ (if clauses
+ (destructuring-bind (test &rest body)
+ (car clauses)
+ (if (eq t test)
+ (ps-compile-expression `(progn ,@body))
+ `(js:? ,(ps-compile-expression test)
+ ,(ps-compile-expression `(progn ,@body))
+ ,(make-cond-clauses-into-nested-ifs (cdr clauses)))))
+ (ps-compile-expression nil)))
+
+(define-ps-special-form if (test then &optional else)
+ (if compile-expression?
+ `(js:? ,(ps-compile-expression (ps-macroexpand test))
+ ,(ps-compile-expression (ps-macroexpand then))
+ ,(ps-compile-expression (ps-macroexpand else)))
+ `(js:if ,(ps-compile-expression (ps-macroexpand test))
+ ,(ps-compile-statement `(progn ,then))
+ ,@(when else `(:else ,(ps-compile-statement `(progn ,else)))))))
+
+(define-ps-special-form switch (test-expr &rest clauses)
+ `(js:switch ,(ps-compile-expression test-expr)
+ ,(loop for (val . body) in clauses collect
+ (cons (if (eq val 'default)
+ 'default
+ (ps-compile-expression val))
+ (mapcar (lambda (x) (ps-compile-statement x))
+ body)))))
+
+(defpsmacro case (value &rest clauses)
+ (labels ((make-clause (val body more)
+ (cond ((and (listp val) (not (eq (car val) 'quote)))
+ (append (mapcar #'list (butlast val))
+ (make-clause (first (last val)) body more)))
+ ((member val '(t otherwise))
+ (make-clause 'default body more))
+ (more `((,val ,@body break)))
+ (t `((,val ,@body))))))
+ `(switch ,value ,@(mapcon (lambda (clause)
+ (make-clause (car (first clause))
+ (cdr (first clause))
+ (rest clause)))
+ clauses))))
+
+(defpsmacro when (test &rest body)
+ `(if ,test (progn ,@body)))
+
+(defpsmacro unless (test &rest body)
+ `(if (not ,test) (progn ,@body)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; function definition
+
+(defvar *vars-bound-in-enclosing-lexical-scopes* ())
+
+(defun compile-function-definition (args body)
+ (let ((args (mapcar #'ps-compile-symbol args)))
+ (list args
+ (let* ((*enclosing-lexical-block-declarations* ())
+ (*vars-bound-in-enclosing-lexical-scopes* (append args
+ *vars-bound-in-enclosing-lexical-scopes*))
+ (body (ps-compile-statement `(progn ,@body)))
+ (var-decls (ps-compile-statement
+ `(progn ,@(mapcar (lambda (var) `(var ,var)) *enclosing-lexical-block-declarations*)))))
+ `(js:block ,@(cdr var-decls) ,@(cdr body))))))
+
+(define-ps-special-form %js-lambda (args &rest body)
+ `(js:lambda ,@(compile-function-definition args body)))
+
+(define-ps-special-form %js-defun (name args &rest body)
+ `(js:defun ,name ,@(compile-function-definition args body)))
+
+(defun parse-function-body (body)
+ (let* ((docstring
+ (when (stringp (first body))
+ (first body)))
+ (body-forms (if docstring (rest body) body)))
+ (values body-forms docstring)))
+
+(defun parse-key-spec (key-spec)
+ "parses an &key parameter. Returns 5 values:
+var, init-form, keyword-name, supplied-p-var, init-form-supplied-p.
+
+Syntax of key spec:
+[&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}*
+"
+ (let* ((var (cond ((symbolp key-spec) key-spec)
+ ((and (listp key-spec) (symbolp (first key-spec))) (first key-spec))
+ ((and (listp key-spec) (listp (first key-spec))) (second (first key-spec)))))
+ (keyword-name (if (and (listp key-spec) (listp (first key-spec)))
+ (first (first key-spec))
+ (intern (string var) :keyword)))
+ (init-form (if (listp key-spec) (second key-spec) nil))
+ (init-form-supplied-p (if (listp key-spec) t nil))
+ (supplied-p-var (if (listp key-spec) (third key-spec) nil)))
+ (values var init-form keyword-name supplied-p-var init-form-supplied-p)))
+
+(defun parse-optional-spec (spec)
+ "Parses an &optional parameter. Returns 3 values: var, init-form, supplied-p-var.
+[&optional {var | (var [init-form [supplied-p-parameter]])}*] "
+ (let* ((var (cond ((symbolp spec) spec)
+ ((and (listp spec) (first spec)))))
+ (init-form (if (listp spec) (second spec)))
+ (supplied-p-var (if (listp spec) (third spec))))
+ (values var init-form supplied-p-var)))
+
+(defun parse-aux-spec (spec)
+ "Returns two values: variable and init-form"
+ ;; [&aux {var | (var [init-form])}*])
+ (values (if (symbolp spec) spec (first spec))
+ (when (listp spec) (second spec))))
+
+(defpsmacro defaultf (name value suppl)
+ `(progn
+ ,@(when suppl `((var ,suppl t)))
+ (when (=== ,name undefined)
+ (setf ,name ,value ,@(when suppl (list suppl nil))))))
+
+(defun parse-extended-function (lambda-list body &optional name)
+ "Returns two values: the effective arguments and body for a function with
+the given lambda-list and body."
+
+ ;; The lambda list is transformed as follows, since a javascript lambda list is just a
+ ;; list of variable names, and you have access to the arguments variable inside the function:
+ ;; * standard variables are the mapped directly into the js-lambda list
+ ;; * optional variables' variable names are mapped directly into the lambda list,
+ ;; and for each optional variable with name v, default value d, and
+ ;; supplied-p parameter s, a form is produced (defaultf v d s)
+ ;; * keyword variables are not included in the js-lambda list, but instead are
+ ;; obtained from the magic js ARGUMENTS pseudo-array. Code assigning values to
+ ;; keyword vars is prepended to the body of the function. Defaults and supplied-p
+ ;; are handled using the same mechanism as with optional vars.
+ (declare (ignore name))
+ (multiple-value-bind (requireds optionals rest? rest keys? keys allow? aux? aux
+ more? more-context more-count key-object)
+ (parse-lambda-list lambda-list)
+ (declare (ignore allow? aux? aux more? more-context more-count key-object))
+ (let* (;; optionals are of form (var default-value)
+ (effective-args
+ (remove-if
+ #'null
+ (append requireds
+ (mapcar #'parse-optional-spec optionals))))
+ (opt-forms
+ (mapcar #'(lambda (opt-spec)
+ (multiple-value-bind (var val suppl)
+ (parse-optional-spec opt-spec)
+ `(defaultf ,var ,val ,suppl)))
+ optionals))
+ (key-forms
+ (when keys?
+ (if (< *js-target-version* 1.6)
+ (with-ps-gensyms (n)
+ (let ((decls nil) (assigns nil) (defaults nil))
+ (mapc (lambda (k)
+ (multiple-value-bind (var init-form keyword-str suppl)
+ (parse-key-spec k)
+ (push `(var ,var) decls)
+ (push `(,keyword-str (setf ,var (aref arguments (1+ ,n)))) assigns)
+ (push (list 'defaultf var init-form suppl) defaults)))
+ (reverse keys))
+ `(,@decls
+ (loop :for ,n :from ,(length requireds)
+ :below (length arguments) :by 2 :do
+ (case (aref arguments ,n) ,@assigns))
+ ,@defaults)))
+ (mapcar (lambda (k)
+ (multiple-value-bind (var init-form keyword-str)
+ (parse-key-spec k)
+ (with-ps-gensyms (x)
+ `(let ((,x ((@ *Array prototype index-of call) arguments ,keyword-str ,(length requireds))))
+ (var ,var (if (= -1 ,x) ,init-form (aref arguments (1+ ,x))))))))
+ keys))))
+ (rest-form
+ (if rest?
+ (with-ps-gensyms (i)
+ `(progn (var ,rest (array))
+ (dotimes (,i (- (slot-value arguments 'length) ,(length effective-args)))
+ (setf (aref ,rest ,i) (aref arguments (+ ,i ,(length effective-args)))))))
+ `(progn)))
+ (body-paren-forms (parse-function-body body)) ; remove documentation
+ (effective-body (append opt-forms key-forms (list rest-form) body-paren-forms)))
+ (values effective-args effective-body))))
+
+(defpsmacro defun (name lambda-list &body body)
+ "An extended defun macro that allows cool things like keyword arguments.
+lambda-list::=
+ (var*
+ [&optional {var | (var [init-form [supplied-p-parameter]])}*]
+ [&rest var]
+ [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* [&allow-other-keys]]
+ [&aux {var | (var [init-form])}*])"
+ (if (symbolp name)
+ `(defun-function ,name ,lambda-list ,@body)
+ (progn (assert (and (listp name) (= (length name) 2) (eq 'setf (car name))) ()
+ "(defun ~s ~s ...) needs to have a symbol or (setf symbol) for a name." name lambda-list)
+ `(defun-setf ,name ,lambda-list ,@body))))
+
+(defpsmacro defun-function (name lambda-list &body body)
+ (multiple-value-bind (effective-args effective-body)
+ (parse-extended-function lambda-list body name)
+ `(%js-defun ,name ,effective-args
+ ,@effective-body)))
+
+(defpsmacro lambda (lambda-list &body body)
+ "An extended defun macro that allows cool things like keyword arguments.
+lambda-list::=
+ (var*
+ [&optional {var | (var [init-form [supplied-p-parameter]])}*]
+ [&rest var]
+ [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* [&allow-other-keys]]
+ [&aux {var | (var [init-form])}*])"
+ (multiple-value-bind (effective-args effective-body)
+ (parse-extended-function lambda-list body)
+ `(%js-lambda ,effective-args
+ ,@effective-body)))
+
+(define-ps-special-form flet (fn-defs &rest body)
+ (let ((fn-renames (make-macro-dictionary)))
+ (loop for (fn-name) in fn-defs do
+ (setf (gethash fn-name fn-renames) (ps-gensym fn-name)))
+ (let ((fn-defs (ps-compile
+ `(progn ,@(loop for (fn-name . def) in fn-defs collect
+ `(var ,(gethash fn-name fn-renames) (lambda ,@def))))))
+ (*ps-local-function-names* (cons fn-renames *ps-local-function-names*)))
+ (append fn-defs (cdr (ps-compile `(progn ,@body)))))))
+
+(define-ps-special-form labels (fn-defs &rest body)
+ (with-local-macro-environment (local-fn-renames *ps-local-function-names*)
+ (loop for (fn-name) in fn-defs do
+ (setf (gethash fn-name local-fn-renames) (ps-gensym fn-name)))
+ (ps-compile
+ `(progn ,@(loop for (fn-name . def) in fn-defs collect
+ `(var ,(gethash fn-name local-fn-renames) (lambda ,@def)))
+ ,@body))))
+
+(define-ps-special-form function (fn-name)
+ (ps-compile (maybe-rename-local-function fn-name)))
+
+(defvar *defun-setf-name-prefix* "__setf_")
+
+(defpsmacro defun-setf (setf-name lambda-list &body body)
+ (let ((mangled-function-name (intern (concatenate 'string *defun-setf-name-prefix* (symbol-name (second setf-name)))
+ (symbol-package (second setf-name))))
+ (function-args (cdr (ordered-set-difference lambda-list lambda-list-keywords))))
+ (ps* `(defsetf ,(second setf-name) ,(cdr lambda-list) (store-var)
+ `(,',mangled-function-name ,store-var ,@(list ,@function-args))))
+ `(defun ,mangled-function-name ,lambda-list ,@body)))
+
+(defpsmacro defsetf-long (access-fn lambda-list (store-var) form)
+ (setf (gethash access-fn *ps-setf-expanders*)
+ (compile nil
+ (let ((var-bindings (ordered-set-difference lambda-list lambda-list-keywords)))
+ `(lambda (access-fn-args store-form)
+ (destructuring-bind ,lambda-list
+ access-fn-args
+ (let* ((,store-var (ps-gensym))
+ (gensymed-names (loop repeat ,(length var-bindings) collecting (ps-gensym)))
+ (gensymed-arg-bindings (mapcar #'list gensymed-names (list ,@var-bindings))))
+ (destructuring-bind ,var-bindings
+ gensymed-names
+ `(let* (,@gensymed-arg-bindings
+ (,,store-var ,store-form))
+ ,,form))))))))
+ nil)
+
+(defpsmacro defsetf-short (access-fn update-fn &optional docstring)
+ (declare (ignore docstring))
+ (setf (gethash access-fn *ps-setf-expanders*)
+ (lambda (access-fn-args store-form)
+ `(,update-fn ,@access-fn-args ,store-form)))
+ nil)
+
+(defpsmacro defsetf (access-fn &rest args)
+ `(,(if (= (length args) 3) 'defsetf-long 'defsetf-short) ,access-fn ,@args))
+
+(defpsmacro funcall (&rest arg-form)
+ arg-form)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; macros
+(define-ps-special-form macrolet (macros &body body)
+ (with-local-macro-environment (local-macro-dict *ps-macro-env*)
+ (dolist (macro macros)
+ (destructuring-bind (name arglist &body body)
+ macro
+ (setf (gethash name local-macro-dict) (eval (make-ps-macro-function arglist body)))))
+ (ps-compile `(progn ,@body))))
+
+(define-ps-special-form symbol-macrolet (symbol-macros &body body)
+ (with-local-macro-environment (local-macro-dict *ps-symbol-macro-env*)
+ (let (local-var-bindings)
+ (dolist (macro symbol-macros)
+ (destructuring-bind (name expansion)
+ macro
+ (setf (gethash name local-macro-dict) (lambda (x) (declare (ignore x)) expansion))
+ (push name local-var-bindings)))
+ (let ((*vars-bound-in-enclosing-lexical-scopes* (append local-var-bindings
+ *vars-bound-in-enclosing-lexical-scopes*)))
+ (ps-compile `(progn ,@body))))))
+
+(define-ps-special-form defmacro (name args &body body) ;; should this be a macro?
+ (eval `(defpsmacro ,name ,args ,@body))
+ nil)
+
+(define-ps-special-form define-symbol-macro (name expansion) ;; should this be a macro?
+ (eval `(define-ps-symbol-macro ,name ,expansion))
+ nil)
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; objects
+(add-ps-reserved-symbol '{})
+(define-ps-symbol-macro {} (create))
+
+(define-ps-special-form create (&rest arrows)
+ `(js:object
+ ,@(loop for (key-expr val-expr) on arrows by #'cddr collecting
+ (let ((compiled-key (ps-compile-expression (ps-macroexpand key-expr))))
+ (assert (or (stringp compiled-key)
+ (numberp compiled-key)
+ (keywordp compiled-key)
+ (and (listp compiled-key)
+ (eq 'js:variable (car compiled-key))))
+ ()
+ "Slot key ~s is not one of js-variable, keyword, string or number."
+ compiled-key)
+ (let ((key (aif (ps-reserved-symbol-p (if (listp compiled-key)
+ (second compiled-key)
+ compiled-key))
+ it
+ compiled-key)))
+ (cons key (ps-compile-expression (ps-macroexpand val-expr))))))))
+
+(define-ps-special-form instanceof (value type)
+ `(js:instanceof ,(ps-compile-expression value)
+ ,(ps-compile-expression type)))
+
+(define-ps-special-form %js-slot-value (obj slot)
+ (let ((slot (ps-macroexpand slot)))
+ `(js:slot-value ,(ps-compile-expression (ps-macroexpand obj))
+ ,(let ((slot (if (and (listp slot) (eq 'quote (car slot)))
+ (second slot) ;; assume we're quoting a symbol
+ (ps-compile-expression slot))))
+ (if (and (symbolp slot)
+ (ps-reserved-symbol-p slot))
+ (symbol-name-to-js-string slot)
+ slot)))))
+
+(defpsmacro slot-value (obj &rest slots)
+ (if (null (rest slots))
+ `(%js-slot-value ,obj ,(first slots))
+ `(slot-value (slot-value ,obj ,(first slots)) ,@(rest slots))))
+
+(defpsmacro with-slots (slots object &rest body)
+ (flet ((slot-var (slot) (if (listp slot) (first slot) slot))
+ (slot-symbol (slot) (if (listp slot) (second slot) slot)))
+ `(symbol-macrolet ,(mapcar #'(lambda (slot)
+ `(,(slot-var slot) (slot-value ,object ',(slot-symbol slot))))
+ slots)
+ ,@body)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; assignment and binding
+(defun assignment-op (op)
+ (case op
+ (+ '+=)
+ (~ '~=)
+ (\& '\&=)
+ (\| '\|=)
+ (- '-=)
+ (* '*=)
+ (% '%=)
+ (>> '>>=)
+ (^ '^=)
+ (<< '<<=)
+ (>>> '>>>=)
+ (/ '/=)
+ (t nil)))
+
+(define-ps-special-form setf1% (lhs rhs)
+ (let ((lhs (ps-compile-expression (ps-macroexpand lhs)))
+ (rhs (ps-compile-expression (ps-macroexpand rhs))))
+ (if (and (listp rhs)
+ (eq 'js:operator (car rhs))
+ (member (cadr rhs) '(+ *))
+ (equalp lhs (caddr rhs)))
+ `(js:operator ,(assignment-op (cadr rhs)) ,lhs (js:operator ,(cadr rhs) ,@(cdddr rhs)))
+ `(js:= ,lhs ,rhs))))
+
+(defpsmacro setf (&rest args)
+ (assert (evenp (length args)) ()
+ "~s does not have an even number of arguments." `(setf ,args))
+ `(progn ,@(loop for (place value) on args by #'cddr collect
+ (let ((place (ps-macroexpand place)))
+ (aif (and (listp place) (gethash (car place) *ps-setf-expanders*))
+ (funcall it (cdr place) value)
+ `(setf1% ,place ,value))))))
+
+(defpsmacro psetf (&rest args)
+ (let ((places (loop for x in args by #'cddr collect x))
+ (vals (loop for x in (cdr args) by #'cddr collect x)))
+ (let ((gensyms (mapcar (lambda (x) (declare (ignore x)) (ps-gensym)) places)))
+ `(let ,(mapcar #'list gensyms vals)
+ (setf ,@(mapcan #'list places gensyms))))))
+
+(defun check-setq-args (args)
+ (let ((vars (loop for x in args by #'cddr collect x)))
+ (let ((non-var (find-if (complement #'symbolp) vars)))
+ (when non-var
+ (error 'type-error :datum non-var :expected-type 'symbol)))))
+
+(defpsmacro setq (&rest args)
+ (check-setq-args args)
+ `(setf ,@args))
+
+(defpsmacro psetq (&rest args)
+ (check-setq-args args)
+ `(psetf ,@args))
+
+(define-ps-special-form var (name &optional (value (values) value-provided?) documentation)
+ (declare (ignore documentation))
+ (let ((name (ps-macroexpand name)))
+ (if compile-expression?
+ (progn (push name *enclosing-lexical-block-declarations*)
+ (when value-provided?
+ (ps-compile-expression `(setf ,name ,value))))
+ `(js:var (js:variable ,name) ,@(when value-provided?
+ (list (ps-compile-expression (ps-macroexpand value))))))))
+
+(defpsmacro defvar (name &optional (value (values) value-provided?) documentation)
+ ;; this must be used as a top-level form, otherwise the resulting behavior will be undefined.
+ (declare (ignore documentation))
+ (pushnew name *ps-special-variables*)
+ `(var ,name ,@(when value-provided? (list value))))
+
+(define-ps-special-form let (bindings &body body)
+ `(js:let ,(mapcar #'car bindings)
+ ,(ps-compile `(progn
+ ,@(mapcar (lambda (bind)
+ `(var ,(car bind) ,(cadr bind)))
+ bindings)
+ ,@body))))
+
+(defpsmacro let* (bindings &body body)
+ (if bindings
+ `(let (,(car bindings))
+ (let* ,(cdr bindings)
+ ,@body))
+ `(progn ,@body)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; iteration
+(defun make-for-vars/inits (init-forms)
+ (mapcar (lambda (x)
+ (cons (ps-compile-symbol (ps-macroexpand (if (atom x) x (first x))))
+ (ps-compile-expression (ps-macroexpand (if (atom x) nil (second x))))))
+ init-forms))
+
+(define-ps-special-form labeled-for (label init-forms cond-forms step-forms &rest body)
+ `(js:for ,label
+ ,(make-for-vars/inits init-forms)
+ ,(mapcar (lambda (x) (ps-compile-expression (ps-macroexpand x))) cond-forms)
+ ,(mapcar (lambda (x) (ps-compile-expression (ps-macroexpand x))) step-forms)
+ ,(ps-compile-statement `(progn ,@body))))
+
+(defpsmacro for (init-forms cond-forms step-forms &body body)
+ `(labeled-for nil ,init-forms ,cond-forms ,step-forms ,@body))
+
+(defun do-make-let-bindings (decls)
+ (mapcar (lambda (x)
+ (if (atom x) x
+ (if (endp (cdr x)) (list (car x))
+ (subseq x 0 2))))
+ decls))
+
+(defun do-make-init-vars (decls)
+ (mapcar (lambda (x) (if (atom x) x (first x))) decls))
+
+(defun do-make-init-vals (decls)
+ (mapcar (lambda (x) (if (or (atom x) (endp (cdr x))) nil (second x))) decls))
+
+(defun do-make-for-vars/init (decls)
+ (mapcar (lambda (x)
+ (if (atom x) x
+ (if (endp (cdr x)) x
+ (subseq x 0 2))))
+ decls))
+
+(defun do-make-for-steps (decls)
+ (mapcar (lambda (x)
+ `(setf ,(first x) ,(third x)))
+ (remove-if (lambda (x) (or (atom x) (< (length x) 3))) decls)))
+
+(defun do-make-iter-psteps (decls)
+ `(psetq
+ ,@(mapcan (lambda (x) (list (first x) (third x)))
+ (remove-if (lambda (x) (or (atom x) (< (length x) 3))) decls))))
+
+(defpsmacro do* (decls (termination &optional (result nil result?)) &body body)
+ (if result?
+ `((lambda ()
+ (for ,(do-make-for-vars/init decls) ((not ,termination)) ,(do-make-for-steps decls)
+ ,@body)
+ (return ,result)))
+ `(progn
+ (for ,(do-make-for-vars/init decls) ((not ,termination)) ,(do-make-for-steps decls)
+ ,@body))))
+
+(defpsmacro do (decls (termination &optional (result nil result?)) &body body)
+ (if result?
+ `((lambda ,(do-make-init-vars decls)
+ (for () ((not ,termination)) ()
+ ,@body
+ ,(do-make-iter-psteps decls))
+ (return ,result))
+ ,@(do-make-init-vals decls))
+ `(let ,(do-make-let-bindings decls)
+ (for () ((not ,termination)) ()
+ ,@body
+ ,(do-make-iter-psteps decls)))))
+
+(define-ps-special-form for-in ((var object) &rest body)
+ `(js:for-in ,(ps-compile-expression var)
+ ,(ps-compile-expression (ps-macroexpand object))
+ ,(ps-compile-statement `(progn ,@body))))
+
+(define-ps-special-form while (test &rest body)
+ `(js:while ,(ps-compile-expression test)
+ ,(ps-compile-statement `(progn ,@body))))
+
+(defpsmacro dotimes ((var count &optional (result nil result?)) &rest body)
+ `(do* ((,var 0 (1+ ,var)))
+ ((>= ,var ,count) ,@(when result? (list result)))
+ ,@body))
+
+(defpsmacro dolist ((var array &optional (result nil result?)) &body body)
+ (let ((idx (ps-gensym "_js_idx"))
+ (arrvar (ps-gensym "_js_arrvar")))
+ `(do* (,var
+ (,arrvar ,array)
+ (,idx 0 (1+ ,idx)))
+ ((>= ,idx (slot-value ,arrvar 'length))
+ ,@(when result? (list result)))
+ (setq ,var (aref ,arrvar ,idx))
+ ,@body)))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; misc
+(define-ps-special-form with (expression &rest body)
+ `(js:with ,(ps-compile-expression expression)
+ ,(ps-compile-statement `(progn ,@body))))
+
+(define-ps-special-form try (form &rest clauses)
+ (let ((catch (cdr (assoc :catch clauses)))
+ (finally (cdr (assoc :finally clauses))))
+ (assert (not (cdar catch)) nil "Sorry, currently only simple catch forms are supported.")
+ (assert (or catch finally) ()
+ "Try form should have either a catch or a finally clause or both.")
+ `(js:try ,(ps-compile-statement `(progn ,form))
+ :catch ,(when catch (list (ps-compile-symbol (caar catch))
+ (ps-compile-statement `(progn ,@(cdr catch)))))
+ :finally ,(when finally (ps-compile-statement `(progn ,@finally))))))
+
+(define-ps-special-form cc-if (test &rest body)
+ `(js:cc-if ,test ,@(mapcar #'ps-compile-statement body)))
+
+(define-ps-special-form regex (regex)
+ `(js:regex ,(string regex)))
+
+(define-ps-special-form lisp (lisp-form)
+ ;; (ps (foo (lisp bar))) is in effect equivalent to (ps* `(foo ,bar))
+ ;; when called from inside of ps*, lisp-form has access only to the dynamic environment (like for eval)
+ `(js:escape (compiled-form-to-string (let ((compile-expression? ,compile-expression?))
+ (ps-compile ,lisp-form)))))
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;; eval-when
+(define-ps-special-form eval-when (situation-list &body body)
+ "(eval-when (situation*) body-form*)
+
+The body forms are evaluated only during the given SITUATION. The accepted SITUATIONS are
+:load-toplevel, :compile-toplevel, and :execute. The code in BODY-FORM is assumed to be
+COMMON-LISP code in :compile-toplevel and :load-toplevel sitations, and parenscript code in
+:execute. "
+ (when (and (member :compile-toplevel situation-list)
+ (member *ps-compilation-level* '(:toplevel :inside-toplevel-form)))
+ (eval `(progn ,@body)))
+ (if (member :execute situation-list)
+ (ps-compile `(progn ,@body))
+ (ps-compile `(progn))))
HCoop / clinton / parenscript.git / blobdiff