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18dd299a VS |
1 | (in-package :parenscript) |
2 | ||
3 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
4 | ;;; literals | |
5 | (defmacro defpsliteral (name string) | |
5ac90695 VS |
6 | `(progn (pushnew ',name *ps-literals*) |
7 | (define-ps-special-form ,name (expecting) | |
8 | (declare (ignore expecting)) | |
9 | (list 'js-literal ,string)))) | |
18dd299a VS |
10 | |
11 | (defpsliteral this "this") | |
12 | (defpsliteral t "true") | |
13 | (defpsliteral true "true") | |
14 | (defpsliteral false "false") | |
15 | (defpsliteral f "false") | |
16 | (defpsliteral nil "null") | |
17 | (defpsliteral undefined "undefined") | |
18 | ||
c452748e TC |
19 | (macrolet ((def-for-literal (name printer) |
20 | `(progn | |
21 | (pushnew ',name *ps-literals*) | |
22 | (define-ps-special-form ,name (expecting &optional label) | |
23 | (declare (ignore expecting)) | |
24 | (list ',printer label))))) | |
25 | (def-for-literal break js-break) | |
26 | (def-for-literal continue js-continue)) | |
18dd299a VS |
27 | |
28 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
29 | ;;; unary operators | |
30 | (mapcar (lambda (op) (eval `(define-ps-special-form ,op (expecting value) | |
31 | (declare (ignore expecting)) | |
32 | (list 'js-named-operator ',op (compile-parenscript-form value))))) | |
33 | '(throw delete void typeof new)) | |
34 | ||
35 | (define-ps-special-form return (expecting &optional value) | |
36 | (declare (ignore expecting)) | |
37 | (list 'js-return (compile-parenscript-form value :expecting :expression))) | |
38 | ||
39 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
40 | ;;; arrays | |
41 | (define-ps-special-form array (expecting &rest values) | |
42 | (declare (ignore expecting)) | |
43 | (cons 'array-literal (mapcar (lambda (form) (compile-parenscript-form form :expecting :expression)) | |
44 | values))) | |
45 | ||
46 | (define-ps-special-form aref (expecting array &rest coords) | |
47 | (declare (ignore expecting)) | |
48 | (list 'js-aref (compile-parenscript-form array :expecting :expression) | |
49 | (mapcar (lambda (form) | |
50 | (compile-parenscript-form form :expecting :expression)) | |
51 | coords))) | |
52 | ||
53 | (define-ps-special-form {} (expecting &rest arrows) | |
54 | (declare (ignore expecting)) | |
55 | (cons 'object-literal (loop for (key value) on arrows by #'cddr | |
56 | collect (cons key (compile-parenscript-form value :expecting :expression))))) | |
57 | ||
58 | (defpsmacro list (&rest values) | |
59 | `(array ,@values)) | |
60 | ||
61 | (defpsmacro make-array (&rest inits) | |
62 | `(new (*array ,@inits))) | |
63 | ||
64 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
65 | ;;; operators | |
66 | (define-ps-special-form incf (expecting x &optional (delta 1)) | |
67 | (declare (ignore expecting)) | |
68 | (if (equal delta 1) | |
69 | (list 'unary-operator "++" (compile-parenscript-form x :expecting :expression) :prefix t) | |
70 | (list 'operator '+= (list (compile-parenscript-form x :expecting :expression) | |
71 | (compile-parenscript-form delta :expecting :expression))))) | |
72 | ||
73 | (define-ps-special-form decf (expecting x &optional (delta 1)) | |
74 | (declare (ignore expecting)) | |
75 | (if (equal delta 1) | |
76 | (list 'unary-operator "--" (compile-parenscript-form x :expecting :expression) :prefix t) | |
77 | (list 'operator '-= (list (compile-parenscript-form x :expecting :expression) | |
78 | (compile-parenscript-form delta :expecting :expression))))) | |
79 | ||
80 | (define-ps-special-form - (expecting first &rest rest) | |
81 | (declare (ignore expecting)) | |
82 | (if (null rest) | |
83 | (list 'unary-operator "-" (compile-parenscript-form first :expecting :expression) :prefix t) | |
84 | (list 'operator '- (mapcar (lambda (val) (compile-parenscript-form val :expecting :expression)) | |
85 | (cons first rest))))) | |
86 | ||
87 | (define-ps-special-form not (expecting x) | |
88 | (declare (ignore expecting)) | |
89 | (let ((form (compile-parenscript-form x :expecting :expression)) | |
90 | (not-op nil)) | |
91 | (if (and (eql (first form) 'operator) | |
92 | (= (length (third form)) 2) | |
93 | (setf not-op (case (second form) | |
94 | (== '!=) | |
95 | (< '>=) | |
96 | (> '<=) | |
97 | (<= '>) | |
98 | (>= '<) | |
99 | (!= '==) | |
100 | (=== '!==) | |
101 | (!== '===) | |
102 | (t nil)))) | |
103 | (list 'operator not-op (third form)) | |
104 | (list 'unary-operator "!" form :prefix t)))) | |
105 | ||
106 | (define-ps-special-form ~ (expecting x) | |
107 | (declare (ignore expecting)) | |
108 | (list 'unary-operator "~" (compile-parenscript-form x :expecting :expression) :prefix t)) | |
109 | ||
110 | (defpsmacro 1- (form) | |
111 | `(- ,form 1)) | |
112 | ||
113 | (defpsmacro 1+ (form) | |
114 | `(+ ,form 1)) | |
115 | ||
116 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
117 | ;;; control structures | |
118 | (defun flatten-blocks (body) | |
119 | (when body | |
120 | (if (and (listp (car body)) | |
121 | (eql 'js-block (caar body))) | |
122 | (append (third (car body)) (flatten-blocks (cdr body))) | |
123 | (cons (car body) (flatten-blocks (cdr body)))))) | |
124 | ||
125 | (defun constant-literal-form-p (form) | |
126 | (or (numberp form) | |
127 | (stringp form) | |
128 | (and (listp form) | |
129 | (eql 'js-literal (car form))))) | |
130 | ||
131 | (define-ps-special-form progn (expecting &rest body) | |
132 | (if (and (eql expecting :expression) (= 1 (length body))) | |
133 | (compile-parenscript-form (car body) :expecting :expression) | |
134 | (list 'js-block | |
135 | expecting | |
136 | (let* ((block (mapcar (lambda (form) | |
137 | (compile-parenscript-form form :expecting expecting)) | |
138 | body)) | |
139 | (clean-block (remove nil block)) | |
140 | (flat-block (flatten-blocks clean-block)) | |
141 | (reachable-block (append (remove-if #'constant-literal-form-p (butlast flat-block)) | |
142 | (last flat-block)))) | |
143 | reachable-block)))) | |
144 | ||
145 | (define-ps-special-form cond (expecting &rest clauses) | |
146 | (ecase expecting | |
147 | (:statement (list 'js-cond-statement | |
148 | (mapcar (lambda (clause) | |
149 | (destructuring-bind (test &rest body) | |
150 | clause | |
151 | (list (compile-parenscript-form test :expecting :expression) | |
152 | (compile-parenscript-form `(progn ,@body) :expecting :statement)))) | |
153 | clauses))) | |
154 | (:expression (make-cond-clauses-into-nested-ifs clauses)))) | |
155 | ||
156 | (defun make-cond-clauses-into-nested-ifs (clauses) | |
157 | (if clauses | |
158 | (destructuring-bind (test &rest body) | |
159 | (car clauses) | |
160 | (if (eq t test) | |
161 | (compile-parenscript-form `(progn ,@body) :expecting :expression) | |
162 | (list 'js-expression-if (compile-parenscript-form test :expecting :expression) | |
163 | (compile-parenscript-form `(progn ,@body) :expecting :expression) | |
164 | (make-cond-clauses-into-nested-ifs (cdr clauses))))) | |
165 | (compile-parenscript-form nil :expecting :expression))) | |
166 | ||
167 | (define-ps-special-form if (expecting test then &optional else) | |
168 | (ecase expecting | |
169 | (:statement (list 'js-statement-if (compile-parenscript-form test :expecting :expression) | |
170 | (compile-parenscript-form `(progn ,then)) | |
171 | (when else (compile-parenscript-form `(progn ,else))))) | |
172 | (:expression (list 'js-expression-if (compile-parenscript-form test :expecting :expression) | |
173 | (compile-parenscript-form then :expecting :expression) | |
174 | (compile-parenscript-form else :expecting :expression))))) | |
175 | ||
176 | (define-ps-special-form switch (expecting test-expr &rest clauses) | |
177 | (declare (ignore expecting)) | |
178 | (let ((clauses (mapcar (lambda (clause) | |
179 | (let ((val (car clause)) | |
180 | (body (cdr clause))) | |
181 | (cons (if (eql val 'default) | |
182 | 'default | |
183 | (compile-parenscript-form val :expecting :expression)) | |
184 | (mapcar (lambda (statement) (compile-parenscript-form statement :expecting :statement)) | |
185 | body)))) | |
186 | clauses)) | |
187 | (expr (compile-parenscript-form test-expr :expecting :expression))) | |
188 | (list 'js-switch expr clauses))) | |
189 | ||
190 | (defpsmacro case (value &rest clauses) | |
191 | (labels ((make-clause (val body more) | |
192 | (cond ((listp val) | |
193 | (append (mapcar #'list (butlast val)) | |
194 | (make-clause (first (last val)) body more))) | |
195 | ((member val '(t otherwise)) | |
196 | (make-clause 'default body more)) | |
197 | (more `((,val ,@body break))) | |
198 | (t `((,val ,@body)))))) | |
199 | `(switch ,value ,@(mapcon (lambda (clause) | |
200 | (make-clause (car (first clause)) | |
201 | (cdr (first clause)) | |
202 | (rest clause))) | |
203 | clauses)))) | |
204 | ||
205 | (defpsmacro when (test &rest body) | |
206 | `(if ,test (progn ,@body))) | |
207 | ||
208 | (defpsmacro unless (test &rest body) | |
209 | `(if (not ,test) (progn ,@body))) | |
210 | ||
211 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
212 | ;;; function definition | |
213 | (defun compile-function-definition (args body) | |
214 | (list (mapcar (lambda (arg) (compile-parenscript-form arg :expecting :symbol)) args) | |
215 | (let ((*enclosing-lexical-block-declarations* ())) | |
216 | ;; the first compilation will produce a list of variables we need to declare in the function body | |
217 | (compile-parenscript-form `(progn ,@body) :expecting :statement) | |
218 | ;; now declare and compile | |
58c4ef4f | 219 | (compile-parenscript-form `(progn ,@(loop for var in *enclosing-lexical-block-declarations* collect `(var ,var)) |
18dd299a VS |
220 | ,@body) :expecting :statement)))) |
221 | ||
222 | (define-ps-special-form %js-lambda (expecting args &rest body) | |
223 | (declare (ignore expecting)) | |
224 | (cons 'js-lambda (compile-function-definition args body))) | |
225 | ||
226 | (define-ps-special-form %js-defun (expecting name args &rest body) | |
227 | (declare (ignore expecting)) | |
228 | (append (list 'js-defun name) (compile-function-definition args body))) | |
229 | ||
230 | (defun parse-function-body (body) | |
231 | (let* ((docstring | |
232 | (when (stringp (first body)) | |
233 | (first body))) | |
234 | (body-forms (if docstring (rest body) body))) | |
235 | (values body-forms docstring))) | |
236 | ||
237 | (defun parse-key-spec (key-spec) | |
238 | "parses an &key parameter. Returns 4 values: | |
239 | var, init-form, keyword-name, supplied-p-var, init-form-supplied-p. | |
240 | ||
241 | Syntax of key spec: | |
242 | [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* | |
243 | " | |
244 | (let* ((var (cond ((symbolp key-spec) key-spec) | |
245 | ((and (listp key-spec) (symbolp (first key-spec))) (first key-spec)) | |
246 | ((and (listp key-spec) (listp (first key-spec))) (second key-spec)))) | |
247 | (keyword-name (if (and (listp key-spec) (listp (first key-spec))) | |
248 | (first (first key-spec)) | |
249 | (intern (string var) :keyword))) | |
250 | (init-form (if (listp key-spec) (second key-spec) nil)) | |
251 | (init-form-supplied-p (if (listp key-spec) t nil)) | |
252 | (supplied-p-var (if (listp key-spec) (third key-spec) nil))) | |
253 | (values var init-form keyword-name supplied-p-var init-form-supplied-p))) | |
254 | ||
255 | (defun parse-optional-spec (spec) | |
256 | "Parses an &optional parameter. Returns 3 values: var, init-form, supplied-p-var. | |
257 | [&optional {var | (var [init-form [supplied-p-parameter]])}*] " | |
258 | (let* ((var (cond ((symbolp spec) spec) | |
259 | ((and (listp spec) (first spec))))) | |
260 | (init-form (if (listp spec) (second spec))) | |
261 | (supplied-p-var (if (listp spec) (third spec)))) | |
262 | (values var init-form supplied-p-var))) | |
263 | ||
264 | (defun parse-aux-spec (spec) | |
265 | "Returns two values: variable and init-form" | |
266 | ;; [&aux {var | (var [init-form])}*]) | |
267 | (values (if (symbolp spec) spec (first spec)) | |
268 | (when (listp spec) (second spec)))) | |
269 | ||
270 | (defpsmacro defaultf (place value) | |
271 | `(setf ,place (or (and (=== undefined ,place) ,value) | |
272 | ,place))) | |
273 | ||
274 | (defun parse-extended-function (lambda-list body &optional name) | |
275 | "Returns two values: the effective arguments and body for a function with | |
276 | the given lambda-list and body." | |
277 | ||
278 | ;; The lambda list is transformed as follows, since a javascript lambda list is just a | |
279 | ;; list of variable names, and you have access to the arguments variable inside the function: | |
280 | ;; * standard variables are the mapped directly into the js-lambda list | |
281 | ;; * optional variables' variable names are mapped directly into the lambda list, | |
282 | ;; and for each optional variable with name v and default value d, a form is produced | |
283 | ;; (defaultf v d) | |
284 | ;; * when any keyword variables are in the lambda list, a single 'optional-args' variable is | |
285 | ;; appended to the js-lambda list as the last argument. WITH-SLOTS is used for all | |
286 | ;; the variables with inside the body of the function, | |
287 | ;; a (with-slots ((var-name key-name)) optional-args ...) | |
288 | (declare (ignore name)) | |
289 | (multiple-value-bind (requireds optionals rest? rest keys? keys allow? aux? aux | |
290 | more? more-context more-count key-object) | |
291 | (parse-lambda-list lambda-list) | |
292 | (declare (ignore allow? aux? aux more? more-context more-count)) | |
293 | (let* ((options-var (or key-object (ps-gensym))) | |
294 | ;; optionals are of form (var default-value) | |
295 | (effective-args | |
296 | (remove-if | |
297 | #'null | |
298 | (append requireds | |
299 | (mapcar #'parse-optional-spec optionals) | |
300 | (when keys (list options-var))))) | |
301 | ;; an alist of arg -> default val | |
302 | (initform-pairs | |
303 | (remove | |
304 | nil | |
305 | (append | |
306 | ;; optional arguments first | |
307 | (mapcar #'(lambda (opt-spec) | |
308 | (multiple-value-bind (var val) (parse-optional-spec opt-spec) | |
309 | (cons var val))) | |
310 | optionals) | |
311 | (if keys? (list (cons options-var '(create)))) | |
312 | (mapcar #'(lambda (key-spec) | |
313 | (multiple-value-bind (var val x y specified?) (parse-key-spec key-spec) | |
314 | (declare (ignore x y)) | |
315 | (when specified? (cons var val)))) | |
316 | keys)))) | |
317 | (body-paren-forms (parse-function-body body)) ;remove documentation | |
318 | ;; | |
319 | (initform-forms | |
320 | (mapcar #'(lambda (default-pair) | |
321 | `(defaultf ,(car default-pair) ,(cdr default-pair))) | |
322 | initform-pairs)) | |
323 | (rest-form | |
324 | (if rest? | |
325 | (with-ps-gensyms (i) | |
f326f929 | 326 | `(progn (var ,rest (array)) |
18dd299a VS |
327 | (dotimes (,i (- arguments.length ,(length effective-args))) |
328 | (setf (aref ,rest ,i) (aref arguments (+ ,i ,(length effective-args))))))) | |
329 | `(progn))) | |
330 | (effective-body (append initform-forms (list rest-form) body-paren-forms)) | |
331 | (effective-body | |
332 | (if keys? | |
333 | (list `(with-slots ,(mapcar #'(lambda (key-spec) | |
334 | (multiple-value-bind (var x key-name) | |
335 | (parse-key-spec key-spec) | |
336 | (declare (ignore x)) | |
337 | (list var key-name))) | |
338 | keys) | |
339 | ,options-var | |
340 | ,@effective-body)) | |
341 | effective-body))) | |
342 | (values effective-args effective-body)))) | |
343 | ||
344 | (defpsmacro defun (name lambda-list &body body) | |
345 | "An extended defun macro that allows cool things like keyword arguments. | |
346 | lambda-list::= | |
347 | (var* | |
348 | [&optional {var | (var [init-form [supplied-p-parameter]])}*] | |
349 | [&rest var] | |
350 | [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* [&allow-other-keys]] | |
351 | [&aux {var | (var [init-form])}*])" | |
352 | (if (symbolp name) | |
353 | `(defun-function ,name ,lambda-list ,@body) | |
354 | (progn (assert (and (= (length name) 2) (eql 'setf (car name))) () | |
355 | "(defun ~s ~s ...) needs to have a symbol or (setf symbol) for a name." name lambda-list) | |
356 | `(defun-setf ,name ,lambda-list ,@body)))) | |
357 | ||
358 | (defpsmacro defun-function (name lambda-list &body body) | |
359 | (multiple-value-bind (effective-args effective-body) | |
360 | (parse-extended-function lambda-list body name) | |
361 | `(%js-defun ,name ,effective-args | |
362 | ,@effective-body))) | |
363 | ||
364 | (defvar *defun-setf-name-prefix* "__setf_") | |
365 | ||
366 | (defpsmacro defun-setf (setf-name lambda-list &body body) | |
367 | (let ((mangled-function-name (intern (concatenate 'string *defun-setf-name-prefix* (symbol-name (second setf-name))) | |
368 | (symbol-package (second setf-name)))) | |
369 | (function-args (cdr (ordered-set-difference lambda-list lambda-list-keywords)))) | |
370 | `(progn (defsetf ,(second setf-name) ,(cdr lambda-list) (store-var) | |
371 | `(,',mangled-function-name ,store-var ,@(list ,@function-args))) | |
372 | (defun ,mangled-function-name ,lambda-list ,@body)))) | |
373 | ||
374 | (defpsmacro lambda (lambda-list &body body) | |
375 | "An extended defun macro that allows cool things like keyword arguments. | |
376 | lambda-list::= | |
377 | (var* | |
378 | [&optional {var | (var [init-form [supplied-p-parameter]])}*] | |
379 | [&rest var] | |
380 | [&key {var | ({var | (keyword-name var)} [init-form [supplied-p-parameter]])}* [&allow-other-keys]] | |
381 | [&aux {var | (var [init-form])}*])" | |
382 | (multiple-value-bind (effective-args effective-body) | |
383 | (parse-extended-function lambda-list body) | |
384 | `(%js-lambda ,effective-args | |
385 | ,@effective-body))) | |
386 | ||
387 | (defpsmacro defsetf-long (access-fn lambda-list (store-var) form) | |
388 | (setf (get-macro-spec access-fn *script-setf-expanders*) | |
389 | (compile nil | |
390 | (let ((var-bindings (ordered-set-difference lambda-list lambda-list-keywords))) | |
391 | `(lambda (access-fn-args store-form) | |
392 | (destructuring-bind ,lambda-list | |
393 | access-fn-args | |
394 | (let* ((,store-var (ps-gensym)) | |
395 | (gensymed-names (loop repeat ,(length var-bindings) collecting (ps-gensym))) | |
396 | (gensymed-arg-bindings (mapcar #'list gensymed-names (list ,@var-bindings)))) | |
397 | (destructuring-bind ,var-bindings | |
398 | gensymed-names | |
58c4ef4f VS |
399 | `(let* (,@gensymed-arg-bindings |
400 | (,,store-var ,store-form)) | |
18dd299a VS |
401 | ,,form)))))))) |
402 | nil) | |
403 | ||
404 | (defpsmacro defsetf-short (access-fn update-fn &optional docstring) | |
405 | (declare (ignore docstring)) | |
406 | (setf (get-macro-spec access-fn *script-setf-expanders*) | |
407 | (lambda (access-fn-args store-form) | |
408 | `(,update-fn ,@access-fn-args ,store-form))) | |
409 | nil) | |
410 | ||
411 | (defpsmacro defsetf (access-fn &rest args) | |
412 | `(,(if (= (length args) 3) 'defsetf-long 'defsetf-short) ,access-fn ,@args)) | |
413 | ||
414 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
415 | ;;; macros | |
416 | (defmacro with-temp-macro-environment ((var) &body body) | |
417 | `(let* ((,var (make-macro-env-dictionary)) | |
418 | (*script-macro-env* (cons ,var *script-macro-env*))) | |
419 | ,@body)) | |
420 | ||
421 | (define-ps-special-form macrolet (expecting macros &body body) | |
422 | (declare (ignore expecting)) | |
423 | (with-temp-macro-environment (macro-env-dict) | |
424 | (dolist (macro macros) | |
425 | (destructuring-bind (name arglist &body body) | |
426 | macro | |
427 | (setf (get-macro-spec name macro-env-dict) | |
428 | (cons nil (make-ps-macro-function arglist body))))) | |
429 | (compile-parenscript-form `(progn ,@body)))) | |
430 | ||
431 | (define-ps-special-form symbol-macrolet (expecting symbol-macros &body body) | |
432 | (declare (ignore expecting)) | |
433 | (with-temp-macro-environment (macro-env-dict) | |
434 | (dolist (macro symbol-macros) | |
435 | (destructuring-bind (name expansion) | |
436 | macro | |
437 | (setf (get-macro-spec name macro-env-dict) | |
438 | (cons t (make-ps-macro-function () (list `',expansion)))))) | |
439 | (compile-parenscript-form `(progn ,@body)))) | |
440 | ||
441 | (define-ps-special-form defmacro (expecting name args &body body) | |
442 | (declare (ignore expecting)) | |
443 | (define-script-macro% name args body :symbol-macro-p nil) | |
444 | nil) | |
445 | ||
446 | (define-ps-special-form define-symbol-macro (expecting name expansion) | |
447 | (declare (ignore expecting)) | |
448 | (define-script-macro% name () (list `',expansion) :symbol-macro-p t) | |
449 | nil) | |
450 | ||
451 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
452 | ;;; objects | |
453 | (define-ps-special-form create (expecting &rest args) | |
454 | (declare (ignore expecting)) | |
455 | (list 'js-object (loop for (name val) on args by #'cddr collecting | |
456 | (let ((name-expr (compile-parenscript-form name :expecting :expression))) | |
457 | (assert (or (stringp name-expr) | |
458 | (numberp name-expr) | |
459 | (and (listp name-expr) | |
460 | (or (eql 'js-variable (car name-expr)) | |
461 | (eql 'script-quote (car name-expr))))) | |
462 | () | |
463 | "Slot ~s is not one of js-variable, keyword, string or number." name-expr) | |
464 | (list name-expr (compile-parenscript-form val :expecting :expression)))))) | |
465 | ||
466 | (define-ps-special-form %js-slot-value (expecting obj slot) | |
467 | (declare (ignore expecting)) | |
468 | (if (ps::ps-macroexpand slot) | |
469 | (list 'js-slot-value (compile-parenscript-form obj :expecting :expression) (compile-parenscript-form slot)) | |
470 | (compile-parenscript-form obj :expecting :expression))) | |
471 | ||
472 | (define-ps-special-form instanceof (expecting value type) | |
473 | (declare (ignore expecting)) | |
474 | (list 'js-instanceof (compile-parenscript-form value :expecting :expression) | |
475 | (compile-parenscript-form type :expecting :expression))) | |
476 | ||
477 | (defpsmacro slot-value (obj &rest slots) | |
478 | (if (null (rest slots)) | |
479 | `(%js-slot-value ,obj ,(first slots)) | |
480 | `(slot-value (slot-value ,obj ,(first slots)) ,@(rest slots)))) | |
481 | ||
482 | (defpsmacro with-slots (slots object &rest body) | |
483 | (flet ((slot-var (slot) (if (listp slot) (first slot) slot)) | |
484 | (slot-symbol (slot) (if (listp slot) (second slot) slot))) | |
485 | `(symbol-macrolet ,(mapcar #'(lambda (slot) | |
486 | `(,(slot-var slot) (slot-value ,object ',(slot-symbol slot)))) | |
487 | slots) | |
488 | ,@body))) | |
489 | ||
490 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
491 | ;;; assignment and binding | |
492 | (defun assignment-op (op) | |
493 | (case op | |
494 | (+ '+=) | |
495 | (~ '~=) | |
496 | (\& '\&=) | |
497 | (\| '\|=) | |
498 | (- '-=) | |
499 | (* '*=) | |
500 | (% '%=) | |
501 | (>> '>>=) | |
502 | (^ '^=) | |
503 | (<< '<<=) | |
504 | (>>> '>>>=) | |
505 | (/ '/=) | |
506 | (t nil))) | |
507 | ||
508 | (defun smart-setf (lhs rhs) | |
509 | (if (and (listp rhs) | |
510 | (eql 'operator (car rhs)) | |
511 | (member lhs (third rhs) :test #'equalp)) | |
d89456ee VS |
512 | (let ((args-without-first (remove lhs (third rhs) :count 1 :end 1 :test #'equalp))) |
513 | (cond ((and (assignment-op (second rhs)) | |
18dd299a VS |
514 | (member (second rhs) '(+ *)) |
515 | (equalp lhs (first (third rhs)))) | |
516 | (list 'operator (assignment-op (second rhs)) | |
517 | (list lhs (list 'operator (second rhs) args-without-first)))) | |
18dd299a VS |
518 | (t (list 'js-assign lhs rhs)))) |
519 | (list 'js-assign lhs rhs))) | |
520 | ||
521 | (define-ps-special-form setf1% (expecting lhs rhs) | |
522 | (declare (ignore expecting)) | |
523 | (smart-setf (compile-parenscript-form lhs :expecting :expression) (compile-parenscript-form rhs :expecting :expression))) | |
524 | ||
525 | (defpsmacro setf (&rest args) | |
526 | (flet ((process-setf-clause (place value-form) | |
527 | (if (and (listp place) (get-macro-spec (car place) *script-setf-expanders*)) | |
528 | (funcall (get-macro-spec (car place) *script-setf-expanders*) (cdr place) value-form) | |
529 | (let ((exp-place (ps-macroexpand place))) | |
530 | (if (and (listp exp-place) (get-macro-spec (car exp-place) *script-setf-expanders*)) | |
531 | (funcall (get-macro-spec (car exp-place) *script-setf-expanders*) (cdr exp-place) value-form) | |
532 | `(setf1% ,exp-place ,value-form)))))) | |
533 | (assert (evenp (length args)) () | |
534 | "~s does not have an even number of arguments." (cons 'setf args)) | |
535 | `(progn ,@(loop for (place value) on args by #'cddr collect (process-setf-clause place value))))) | |
536 | ||
1fe28ee1 TC |
537 | (defpsmacro psetf (&rest args) |
538 | (let ((vars (loop for x in args by #'cddr collect x)) | |
539 | (vals (loop for x in (cdr args) by #'cddr collect x))) | |
540 | (let ((gensyms (mapcar (lambda (x) (declare (ignore x)) (ps-gensym)) vars))) | |
541 | `(simple-let* ,(mapcar #'list gensyms vals) | |
542 | (setf ,@(mapcan #'list vars gensyms)))))) | |
543 | ||
ec227186 TC |
544 | (defun check-setq-args (args) |
545 | (let ((vars (loop for x in args by #'cddr collect x))) | |
546 | (let ((non-var (find-if (complement #'symbolp) vars))) | |
547 | (when non-var | |
548 | (error 'type-error :datum non-var :expected-type 'symbol))))) | |
549 | ||
550 | (defpsmacro setq (&rest args) | |
551 | (check-setq-args args) | |
552 | `(setf ,@args)) | |
553 | ||
554 | (defpsmacro psetq (&rest args) | |
555 | (check-setq-args args) | |
556 | `(psetf ,@args)) | |
557 | ||
58c4ef4f | 558 | (define-ps-special-form var (expecting name &rest value) |
18dd299a | 559 | (declare (ignore expecting)) |
58c4ef4f | 560 | (append (list 'js-var name) |
18dd299a | 561 | (when value |
58c4ef4f VS |
562 | (assert (= (length value) 1) () "Wrong number of arguments to var: ~s" `(var ,name ,@value)) |
563 | (list (compile-parenscript-form (car value) :expecting :expression))))) | |
18dd299a | 564 | |
58c4ef4f VS |
565 | (defpsmacro defvar (name &rest value) |
566 | "Note: this must be used as a top-level form, otherwise the result will be undefined behavior." | |
567 | (pushnew name *ps-special-variables*) | |
568 | (assert (or (null value) (= (length value) 1)) () "Wrong number of arguments to defvar: ~s" `(defvar ,name ,@value)) | |
569 | `(var ,name ,@value)) | |
570 | ||
3530f5e1 TC |
571 | (defun make-let-vars (bindings) |
572 | (mapcar (lambda (x) (if (listp x) (car x) x)) bindings)) | |
573 | ||
574 | (defun make-let-vals (bindings) | |
575 | (mapcar (lambda (x) (if (or (atom x) (endp (cdr x))) nil (second x))) bindings)) | |
576 | ||
58c4ef4f | 577 | (defpsmacro lexical-let* (bindings &body body) |
241c2c5b TC |
578 | `((lambda () |
579 | (let* ,bindings | |
580 | ,@body)))) | |
58c4ef4f | 581 | |
3530f5e1 TC |
582 | (defpsmacro lexical-let (bindings &body body) |
583 | `((lambda ,(make-let-vars bindings) | |
584 | ,@body) | |
585 | ,@(make-let-vals bindings))) | |
586 | ||
b5cf9e71 | 587 | (defpsmacro simple-let* (bindings &body body) |
58c4ef4f VS |
588 | (if bindings |
589 | (let ((var (if (listp (car bindings)) (caar bindings) (car bindings)))) | |
590 | `(,(if (member var *ps-special-variables*) 'let1-dynamic 'let1) ,(car bindings) | |
b5cf9e71 | 591 | (simple-let* ,(cdr bindings) ,@body))) |
58c4ef4f VS |
592 | `(progn ,@body))) |
593 | ||
ca25a40e TC |
594 | (defpsmacro simple-let (bindings &body body) |
595 | (let ((vars (mapcar (lambda (x) (if (atom x) x (first x))) bindings)) | |
596 | (vals (mapcar (lambda (x) (if (or (atom x) (endp (cdr x))) nil (second x))) bindings))) | |
597 | (let ((gensyms (mapcar (lambda (x) (ps-gensym (format nil "_js_~a" x))) vars))) | |
598 | `(simple-let* ,(mapcar #'list gensyms vals) | |
599 | (simple-let* ,(mapcar #'list vars gensyms) | |
600 | ,@(mapcar (lambda (x) `(delete ,x)) gensyms) | |
601 | ,@body))))) | |
602 | ||
b5cf9e71 TC |
603 | (defpsmacro let* (bindings &body body) |
604 | `(simple-let* ,bindings ,@body)) | |
605 | ||
da7ec1c0 TC |
606 | (defpsmacro let (bindings &body body) |
607 | `(simple-let ,bindings ,@body)) | |
58c4ef4f VS |
608 | |
609 | (define-ps-special-form let1 (expecting binding &rest body) | |
18dd299a VS |
610 | (ecase expecting |
611 | (:statement | |
58c4ef4f | 612 | (compile-parenscript-form `(progn ,(if (atom binding) `(var ,binding) `(var ,@binding)) ,@body) :expecting :statement)) |
18dd299a | 613 | (:expression |
58c4ef4f VS |
614 | (let ((var (if (atom binding) binding (car binding))) |
615 | (variable-assignment (when (listp binding) (cons 'setf binding)))) | |
616 | (push var *enclosing-lexical-block-declarations*) | |
617 | (compile-parenscript-form `(progn ,variable-assignment ,@body) :expecting :expression))))) | |
618 | ||
619 | (defpsmacro let1-dynamic ((var value) &rest body) | |
620 | (with-ps-gensyms (temp-stack-var) | |
621 | `(progn (var ,temp-stack-var) | |
622 | (try (progn (setf ,temp-stack-var ,var) | |
623 | (setf ,var ,value) | |
624 | ,@body) | |
625 | (:finally (setf ,var ,temp-stack-var)))))) | |
18dd299a VS |
626 | |
627 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
628 | ;;; iteration | |
629 | (defun make-for-vars (decls) | |
630 | (loop for decl in decls | |
631 | for var = (if (atom decl) decl (first decl)) | |
632 | for init-value = (if (atom decl) nil (second decl)) | |
633 | collect (cons (compile-parenscript-form var :expecting :symbol) (compile-parenscript-form init-value)))) | |
634 | ||
635 | (defun make-for-steps (decls) | |
636 | (loop for decl in decls | |
637 | when (= (length decl) 3) | |
638 | collect (compile-parenscript-form (third decl) :expecting :expression))) | |
639 | ||
640 | (define-ps-special-form do (expecting decls termination-test &rest body) | |
641 | (declare (ignore expecting)) | |
642 | (let ((vars (make-for-vars decls)) | |
643 | (steps (make-for-steps decls)) | |
644 | (test (compile-parenscript-form `(not ,(first termination-test)) :expecting :expression)) | |
645 | (body (compile-parenscript-form `(progn ,@body)))) | |
646 | (list 'js-for vars steps test body))) | |
647 | ||
648 | (define-ps-special-form doeach (expecting decl &rest body) | |
649 | (declare (ignore expecting)) | |
650 | (list 'js-for-each | |
651 | (first decl) | |
652 | (compile-parenscript-form (second decl) :expecting :expression) | |
653 | (compile-parenscript-form `(progn ,@body)))) | |
654 | ||
655 | (define-ps-special-form while (expecting test &rest body) | |
656 | (declare (ignore expecting)) | |
657 | (list 'js-while (compile-parenscript-form test :expecting :expression) | |
658 | (compile-parenscript-form `(progn ,@body)))) | |
659 | ||
660 | (defpsmacro dotimes (iter &rest body) | |
661 | (let ((var (first iter)) | |
662 | (times (second iter))) | |
663 | `(do ((,var 0 (1+ ,var))) | |
664 | ((>= ,var ,times)) | |
665 | ,@body))) | |
666 | ||
667 | (defpsmacro dolist (i-array &rest body) | |
668 | (let ((var (first i-array)) | |
669 | (array (second i-array)) | |
670 | (arrvar (ps-gensym "tmp-arr")) | |
671 | (idx (ps-gensym "tmp-i"))) | |
58c4ef4f | 672 | `(let* ((,arrvar ,array)) |
18dd299a VS |
673 | (do ((,idx 0 (1+ ,idx))) |
674 | ((>= ,idx (slot-value ,arrvar 'length))) | |
58c4ef4f | 675 | (let* ((,var (aref ,arrvar ,idx))) |
18dd299a VS |
676 | ,@body))))) |
677 | ||
678 | ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; | |
679 | ;;; misc | |
680 | (define-ps-special-form with (expecting expression &rest body) | |
681 | (declare (ignore expecting)) | |
682 | (list 'js-with (compile-parenscript-form expression :expecting :expression) | |
683 | (compile-parenscript-form `(progn ,@body)))) | |
684 | ||
685 | (define-ps-special-form try (expecting form &rest clauses) | |
686 | (declare (ignore expecting)) | |
687 | (let ((catch (cdr (assoc :catch clauses))) | |
688 | (finally (cdr (assoc :finally clauses)))) | |
689 | (assert (not (cdar catch)) nil "Sorry, currently only simple catch forms are supported.") | |
690 | (assert (or catch finally) () | |
691 | "Try form should have either a catch or a finally clause or both.") | |
692 | (list 'js-try (compile-parenscript-form `(progn ,form)) | |
693 | :catch (when catch (list (compile-parenscript-form (caar catch) :expecting :symbol) | |
694 | (compile-parenscript-form `(progn ,@(cdr catch))))) | |
695 | :finally (when finally (compile-parenscript-form `(progn ,@finally)))))) | |
696 | ||
697 | (define-ps-special-form cc-if (expecting test &rest body) | |
698 | (declare (ignore expecting)) | |
699 | (list 'cc-if test (mapcar #'compile-parenscript-form body))) | |
700 | ||
701 | (define-ps-special-form regex (expecting regex) | |
702 | (declare (ignore expecting)) | |
703 | (list 'js-regex (string regex))) | |
704 | ||
705 | (defpsmacro lisp (&body forms) | |
706 | "Evaluates the given forms in Common Lisp at ParenScript | |
707 | macro-expansion time. The value of the last form is treated as a | |
708 | ParenScript expression and is inserted into the generated Javascript | |
709 | \(use nil for no-op)." | |
710 | (eval (cons 'progn forms))) |