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8e198a08 MB |
1 | (in-package :js) |
2 | ||
3 | ;;; ecmascript standard: | |
4 | ;;; http://www.ecma-international.org/publications/standards/Ecma-262.htm | |
5 | ||
6 | ;;; javascript name conversion | |
7 | ||
8 | (defparameter *special-chars* | |
9 | '((#\! . "Bang") | |
10 | (#\? . "What") | |
11 | (#\# . "Hash") | |
12 | (#\$ . "Dollar") | |
13 | (#\@ . "At") | |
14 | (#\% . "Percent") | |
15 | (#\+ . "Plus") | |
16 | (#\* . "Star") | |
17 | (#\/ . "Slash"))) | |
18 | ||
19 | (defun string-chars (string) | |
20 | (coerce string 'list)) | |
21 | ||
22 | (defun constant-string-p (string) | |
23 | (let ((len (length string)) | |
24 | (constant-chars '(#\+ #\*))) | |
25 | (and (> len 2) | |
26 | (member (char string 0) constant-chars) | |
27 | (member (char string (1- len)) constant-chars)))) | |
28 | ||
29 | (defun first-uppercase-p (string) | |
30 | (and (> (length string) 1) | |
31 | (member (char string 0) '(#\+ #\*)))) | |
32 | ||
bcf5db4d MB |
33 | (defun untouchable-string-p (string) |
34 | (and (> (length string) 1) | |
35 | (char= #\: (char string 0)))) | |
36 | ||
8e198a08 MB |
37 | (defun symbol-to-js (symbol) |
38 | (when (symbolp symbol) | |
39 | (setf symbol (symbol-name symbol))) | |
40 | (let ((symbols (string-split symbol '(#\.)))) | |
41 | (cond ((null symbols) "") | |
42 | ((= (length symbols) 1) | |
43 | (let (res | |
bcf5db4d | 44 | (do-not-touch nil) |
8e198a08 MB |
45 | (lowercase t) |
46 | (all-uppercase nil)) | |
47 | (cond ((constant-string-p symbol) | |
48 | (setf all-uppercase t | |
49 | symbol (subseq symbol 1 (1- (length symbol))))) | |
50 | ((first-uppercase-p symbol) | |
51 | (setf lowercase nil | |
bcf5db4d MB |
52 | symbol (subseq symbol 1))) |
53 | ((untouchable-string-p symbol) | |
54 | (setf do-not-touch t | |
55 | symbol (subseq symbol 1)))) | |
8e198a08 | 56 | (flet ((reschar (c) |
bcf5db4d MB |
57 | (push (cond |
58 | (do-not-touch c) | |
59 | ((and lowercase (not all-uppercase)) | |
60 | (char-downcase c)) | |
61 | (t (char-upcase c))) | |
62 | res) | |
8e198a08 MB |
63 | (setf lowercase t))) |
64 | (dotimes (i (length symbol)) | |
65 | (let ((c (char symbol i))) | |
66 | (cond | |
67 | ((eql c #\-) | |
68 | (setf lowercase (not lowercase))) | |
69 | ((assoc c *special-chars*) | |
70 | (dolist (i (coerce (cdr (assoc c *special-chars*)) 'list)) | |
71 | (reschar i))) | |
72 | (t (reschar c)))))) | |
73 | (coerce (nreverse res) 'string))) | |
74 | (t (string-join (mapcar #'symbol-to-js symbols) "."))))) | |
75 | ||
76 | ;;; js language types | |
77 | ||
78 | (defgeneric js-equal (obj1 obj2)) | |
79 | (defmethod js-equal ((obj1 list) (obj2 list)) | |
80 | (and (= (length obj1) (length obj2)) | |
81 | (every #'js-equal obj1 obj2))) | |
82 | (defmethod js-equal ((obj1 t) (obj2 t)) | |
83 | (equal obj1 obj2)) | |
84 | ||
85 | (defmacro defjsclass (name superclasses slots &rest class-options) | |
86 | (let ((slot-names (mapcar #'(lambda (slot) (if (atom slot) slot (first slot))) slots))) | |
87 | `(progn | |
88 | (defclass ,name ,superclasses | |
89 | ,slots ,@class-options) | |
90 | (defmethod js-equal ((obj1 ,name) (obj2 ,name)) | |
91 | (every #'(lambda (slot) | |
92 | (js-equal (slot-value obj1 slot) | |
93 | (slot-value obj2 slot))) | |
94 | ',slot-names))))) | |
95 | ||
96 | (defjsclass statement () | |
97 | ((value :initarg :value :accessor value :initform nil))) | |
98 | ||
99 | (defjsclass expression (statement) | |
100 | ((value))) | |
101 | ||
102 | ;;; indenter | |
103 | ||
104 | (defun special-append-to-last (form elt) | |
105 | (flet ((special-append (form elt) | |
106 | (let ((len (length form))) | |
107 | (if (and (> len 0) | |
108 | (member (char form (1- len)) | |
109 | '(#\; #\, #\}))) | |
110 | form | |
111 | (concatenate 'string form elt))))) | |
112 | (cond ((stringp form) | |
113 | (special-append form elt)) | |
114 | ((consp form) | |
115 | (let ((last (last form))) | |
116 | (if (stringp (car last)) | |
117 | (rplaca last (special-append (car last) elt)) | |
118 | (append-to-last (car last) elt)) | |
119 | form)) | |
120 | (t (error "unsupported form ~S" form))))) | |
121 | ||
122 | (defun dwim-join (value-string-lists max-length | |
123 | &key start end | |
124 | join-before join-after | |
125 | white-space (separator " ") | |
126 | (append-to-last #'append-to-last) | |
127 | (collect t)) | |
128 | #+nil | |
129 | (format t "value-string-lists: ~S~%" value-string-lists) | |
130 | ||
131 | (unless start | |
132 | (setf start "")) | |
133 | ||
134 | (unless join-before | |
135 | (setf join-before "")) | |
136 | ||
137 | ;;; collect single value-string-lists until line full | |
138 | ||
139 | (do* ((string-lists value-string-lists (cdr string-lists)) | |
140 | (string-list (car string-lists) (car string-lists)) | |
141 | (cur-elt start) | |
142 | (cur-empty t) | |
143 | (white-space (or white-space (make-string (length start) :initial-element #\Space))) | |
144 | (res nil)) | |
145 | ((null string-lists) | |
146 | (unless cur-empty | |
147 | (push cur-elt res)) | |
148 | (if (null res) | |
149 | (list (concatenate 'string start end)) | |
150 | (progn | |
151 | (when end | |
152 | (setf (first res) | |
153 | (funcall append-to-last (first res) end))) | |
154 | (nreverse res)))) | |
155 | ||
156 | #+nil | |
157 | (format t "string-list: ~S~%" string-list) | |
158 | ||
159 | (when join-after | |
160 | (unless (null (cdr string-lists)) | |
161 | (funcall append-to-last string-list join-after))) | |
162 | ||
163 | (if (and collect (= (length string-list) 1)) | |
164 | (progn | |
165 | #+nil | |
166 | (format t "cur-elt: ~S line-length ~D, max-length ~D, string: ~S~%" | |
167 | cur-elt | |
168 | (+ (length (first string-list)) | |
169 | (length cur-elt)) | |
170 | max-length | |
171 | (first string-list)) | |
172 | (if (or cur-empty | |
173 | (< (+ (length (first string-list)) | |
174 | (length cur-elt)) max-length)) | |
175 | (setf cur-elt | |
176 | (concatenate 'string cur-elt | |
177 | (if cur-empty "" (concatenate 'string separator join-before)) | |
178 | (first string-list)) | |
179 | cur-empty nil) | |
180 | (progn | |
181 | (push cur-elt res) | |
182 | (setf cur-elt (concatenate 'string white-space | |
183 | join-before (first string-list)) | |
184 | cur-empty nil)))) | |
185 | ||
186 | (progn | |
187 | (unless cur-empty | |
188 | (push cur-elt res) | |
189 | (setf cur-elt white-space | |
190 | cur-empty t)) | |
191 | (setf res (nconc (nreverse | |
192 | (cons (concatenate 'string | |
193 | cur-elt (if (null res) | |
194 | "" join-before) | |
195 | (first string-list)) | |
196 | (mapcar #'(lambda (x) (concatenate 'string white-space x)) | |
197 | (cdr string-list)))) res)) | |
198 | (setf cur-elt white-space cur-empty t))))) | |
199 | ||
200 | (defmethod js-to-strings ((expression expression) start-pos) | |
30b3e3eb | 201 | (declare (ignore start-pos)) |
8e198a08 MB |
202 | (list (princ-to-string (value expression)))) |
203 | ||
204 | (defmethod js-to-statement-strings ((expression expression) start-pos) | |
205 | (js-to-strings expression start-pos)) | |
206 | ||
207 | (defmethod js-to-statement-strings ((statement statement) start-pos) | |
30b3e3eb | 208 | (declare (ignore start-pos)) |
8e198a08 MB |
209 | (list (princ-to-string (value statement)))) |
210 | ||
211 | ;;; compiler macros | |
212 | ||
213 | (eval-when (:compile-toplevel :load-toplevel :execute) | |
214 | (defvar *js-compiler-macros* (make-hash-table) | |
215 | "*JS-COMPILER-MACROS* is a hash-table containing the functions corresponding | |
216 | to javascript special forms, indexed by their name. Javascript special | |
217 | forms are compiler macros for JS expressions.")) | |
218 | ||
219 | (defmacro define-js-compiler-macro (name lambda-list &rest body) | |
220 | "Define a javascript compiler macro NAME. Arguments are destructured | |
221 | according to LAMBDA-LIST. The resulting JS language types are appended | |
222 | to the ongoing javascript compilation." | |
223 | (let ((js-name (intern (concatenate 'string "JS-" (symbol-name name)) #.*package*))) | |
224 | `(eval-when (:compile-toplevel :load-toplevel :execute) | |
225 | (defun ,js-name ,lambda-list ,@body) | |
226 | (setf (gethash ',name *js-compiler-macros*) #',js-name)))) | |
227 | ||
228 | (defun js-compiler-macro-form-p (form) | |
229 | (when (gethash (car form) *js-compiler-macros*) | |
230 | t)) | |
231 | ||
232 | (defun js-get-compiler-macro (name) | |
233 | (gethash name *js-compiler-macros*)) | |
234 | ||
235 | ;;; macro expansion | |
236 | ||
237 | (eval-when (:compile-toplevel :load-toplevel :execute) | |
238 | (defvar *js-macro-toplevel* (make-hash-table) | |
239 | "Toplevel of macro expansion, holds all the toplevel javascript macros.") | |
240 | (defvar *js-macro-env* (list *js-macro-toplevel*) | |
241 | "Current macro environment.")) | |
242 | ||
243 | (defun lookup-macro (name) | |
244 | "Lookup the macro NAME in the current macro expansion | |
245 | environment. Returns the macro and the parent macro environment of | |
246 | this macro." | |
247 | (do ((env *js-macro-env* (cdr env))) | |
248 | ((null env) nil) | |
249 | (let ((val (gethash name (car env)))) | |
250 | (when val | |
251 | (return-from lookup-macro | |
252 | (values val (or (cdr env) | |
253 | (list *js-macro-toplevel*)))))))) | |
254 | ||
255 | (defmacro defjsmacro (name args &rest body) | |
256 | "Define a javascript macro, and store it in the toplevel macro environment." | |
257 | (when (gethash name *js-compiler-macros*) | |
258 | (warn "Redefining compiler macro ~S" name) | |
259 | (remhash name *js-compiler-macros*)) | |
260 | (let ((lambda-list (gensym))) | |
261 | `(setf (gethash ',name *js-macro-toplevel*) | |
262 | #'(lambda (&rest ,lambda-list) | |
263 | (destructuring-bind ,args ,lambda-list ,@body))))) | |
264 | ||
265 | (defun js-expand-form (expr) | |
266 | "Expand a javascript form." | |
267 | (cond ((atom expr) | |
268 | (multiple-value-bind (js-macro macro-env) | |
269 | (lookup-macro expr) | |
270 | (if js-macro | |
271 | (js-expand-form (let ((*js-macro-env* macro-env)) | |
272 | (funcall js-macro))) | |
273 | expr))) | |
274 | ||
275 | ((js-compiler-macro-form-p expr) expr) | |
276 | ||
277 | ((equal (first expr) 'quote) expr) | |
278 | ||
279 | (t (let ((js-macro (lookup-macro (car expr)))) | |
280 | (if js-macro | |
281 | (js-expand-form (apply js-macro (cdr expr))) | |
282 | expr))))) | |
283 | ||
284 | (defvar *var-counter* 0) | |
285 | ||
286 | (defun js-gensym (&optional (name "js")) | |
287 | (intern (format nil "tmp-~A-~A" name (incf *var-counter*)) #.*package*)) | |
288 | ||
289 | ;;; literals | |
290 | ||
291 | (defmacro defjsliteral (name string) | |
292 | "Define a Javascript literal that will expand to STRING." | |
293 | `(define-js-compiler-macro ,name () (make-instance 'expression :value ,string))) | |
294 | ||
295 | (defjsliteral this "this") | |
296 | (defjsliteral t "true") | |
297 | (defjsliteral nil "null") | |
298 | (defjsliteral false "false") | |
299 | (defjsliteral undefined "undefined") | |
300 | ||
301 | (defmacro defjskeyword (name string) | |
302 | "Define a Javascript keyword that will expand to STRING." | |
303 | `(define-js-compiler-macro ,name () (make-instance 'statement :value ,string))) | |
304 | ||
305 | (defjskeyword break "break") | |
306 | (defjskeyword continue "continue") | |
307 | ||
308 | ;;; array literals | |
309 | ||
310 | (defjsclass array-literal (expression) | |
311 | ((values :initarg :values :accessor array-values))) | |
312 | ||
313 | (define-js-compiler-macro array (&rest values) | |
314 | (make-instance 'array-literal | |
315 | :values (mapcar #'js-compile-to-expression values))) | |
316 | ||
317 | (defjsmacro list (&rest values) | |
318 | `(array ,@values)) | |
319 | ||
320 | (defmethod js-to-strings ((array array-literal) start-pos) | |
321 | (let ((value-string-lists | |
322 | (mapcar #'(lambda (x) (js-to-strings x (+ start-pos 2))) | |
323 | (array-values array))) | |
324 | (max-length (- 80 start-pos 2))) | |
325 | (dwim-join value-string-lists max-length | |
326 | :start "[ " :end " ]" | |
327 | :join-after ","))) | |
328 | ||
329 | (defjsclass js-aref (expression) | |
330 | ((array :initarg :array | |
331 | :accessor aref-array) | |
332 | (index :initarg :index | |
333 | :accessor aref-index))) | |
334 | ||
335 | (define-js-compiler-macro aref (array &rest coords) | |
336 | (make-instance 'js-aref | |
337 | :array (js-compile-to-expression array) | |
338 | :index (mapcar #'js-compile-to-expression coords))) | |
339 | ||
340 | (defmethod js-to-strings ((aref js-aref) start-pos) | |
341 | (dwim-join (cons (js-to-strings (aref-array aref) start-pos) | |
342 | (mapcar #'(lambda (x) (dwim-join (list (js-to-strings x (+ start-pos 2))) | |
343 | (- 80 start-pos 2) | |
344 | :start "[" :end "]")) | |
345 | (aref-index aref))) | |
346 | (- 80 start-pos 2) :separator "" | |
347 | :white-space " ")) | |
348 | ||
349 | (defjsmacro make-array (&rest inits) | |
350 | `(new (*array ,@inits))) | |
351 | ||
352 | ;;; string literals | |
353 | ||
354 | (defjsclass string-literal (expression) | |
355 | (value)) | |
356 | ||
357 | (defmethod js-to-strings ((string string-literal) start-pos) | |
358 | (declare (ignore start-pos)) | |
02747605 | 359 | (list (format nil "'~A'" (value string)))) |
8e198a08 MB |
360 | |
361 | ;;; number literals | |
362 | ||
363 | (defjsclass number-literal (expression) | |
364 | (value)) | |
365 | ||
366 | ;;; variables | |
367 | ||
368 | (defjsclass js-variable (expression) | |
369 | (value)) | |
370 | ||
371 | (defmethod js-to-strings ((v js-variable) start-form) | |
30b3e3eb | 372 | (declare (ignore start-form)) |
8e198a08 MB |
373 | (list (symbol-to-js (value v)))) |
374 | ||
375 | ;;; arithmetic operators | |
376 | ||
377 | (eval-when (:compile-toplevel :load-toplevel :execute) | |
378 | ||
379 | (defparameter *op-precedence-hash* (make-hash-table)) | |
380 | ||
381 | (defparameter *op-precedences* | |
382 | '((aref) | |
383 | (slot-value) | |
384 | (! not ~) | |
385 | (* / %) | |
386 | (+ -) | |
387 | (<< >>) | |
388 | (>>>) | |
389 | (< > <= >=) | |
390 | (in if) | |
391 | (eql == != =) | |
392 | (=== !==) | |
393 | (&) | |
394 | (^) | |
395 | (\|) | |
396 | (\&\& and) | |
397 | (\|\| or) | |
398 | (setf *= /= %= += -= <<= >>= >>>= \&= ^= \|=) | |
399 | (comma))) | |
400 | ||
401 | ;;; generate the operator precedences from *OP-PRECEDENCES* | |
402 | (let ((precedence 1)) | |
403 | (dolist (ops *op-precedences*) | |
404 | (dolist (op ops) | |
405 | (setf (gethash op *op-precedence-hash*) precedence)) | |
406 | (incf precedence)))) | |
407 | ||
408 | (defun js-convert-op-name (op) | |
409 | (case op | |
410 | (and '\&\&) | |
411 | (or '\|\|) | |
412 | (not '!) | |
413 | (eql '\=\=) | |
414 | (= '\=\=) | |
415 | (t op))) | |
416 | ||
417 | (defjsclass op-form (expression) | |
418 | ((operator :initarg :operator :accessor operator) | |
419 | (args :initarg :args :accessor op-args))) | |
420 | ||
421 | (defun op-form-p (form) | |
422 | (and (listp form) | |
423 | (not (js-compiler-macro-form-p form)) | |
424 | (not (null (gethash (first form) *op-precedence-hash*))))) | |
425 | ||
426 | (defun klammer (string-list) | |
427 | (prepend-to-first string-list "(") | |
428 | (append-to-last string-list ")") | |
429 | string-list) | |
430 | ||
431 | (defmethod expression-precedence ((expression expression)) | |
432 | 0) | |
433 | ||
434 | (defmethod expression-precedence ((form op-form)) | |
435 | (gethash (operator form) *op-precedence-hash*)) | |
436 | ||
437 | (defmethod js-to-strings ((form op-form) start-pos) | |
438 | (let* ((precedence (expression-precedence form)) | |
439 | (value-string-lists | |
440 | (mapcar #'(lambda (x) | |
441 | (let ((string-list (js-to-strings x (+ start-pos 2)))) | |
442 | (if (>= (expression-precedence x) precedence) | |
443 | (klammer string-list) | |
444 | string-list))) | |
445 | (op-args form))) | |
446 | (max-length (- 80 start-pos 2)) | |
447 | (op-string (format nil "~A " (operator form)))) | |
448 | (dwim-join value-string-lists max-length :join-before op-string))) | |
449 | ||
450 | (defjsmacro 1- (form) | |
451 | `(- ,form 1)) | |
452 | ||
453 | (defjsmacro 1+ (form) | |
454 | `(+ ,form 1)) | |
455 | ||
456 | (defjsclass one-op (expression) | |
457 | ((pre-p :initarg :pre-p | |
458 | :initform nil | |
459 | :accessor one-op-pre-p) | |
460 | (op :initarg :op | |
461 | :accessor one-op))) | |
462 | ||
463 | (defmethod js-to-strings ((one-op one-op) start-pos) | |
464 | (let* ((value (value one-op)) | |
465 | (value-strings (js-to-strings value start-pos))) | |
466 | (when (typep value 'op-form) | |
467 | (setf value-strings (klammer value-strings))) | |
468 | (if (one-op-pre-p one-op) | |
469 | (prepend-to-first value-strings | |
470 | (one-op one-op)) | |
471 | (append-to-last value-strings | |
472 | (one-op one-op))))) | |
473 | ||
474 | (define-js-compiler-macro incf (x) | |
475 | (make-instance 'one-op :pre-p t :op "++" | |
476 | :value (js-compile-to-expression x))) | |
477 | (define-js-compiler-macro ++ (x) | |
478 | (make-instance 'one-op :pre-p nil :op "++" | |
479 | :value (js-compile-to-expression x))) | |
480 | (define-js-compiler-macro decf (x) | |
481 | (make-instance 'one-op :pre-p t :op "--" | |
482 | :value (js-compile-to-expression x))) | |
483 | (define-js-compiler-macro -- (x) | |
484 | (make-instance 'one-op :pre-p nil :op "--" | |
485 | :value (js-compile-to-expression x))) | |
486 | ||
487 | ||
488 | (define-js-compiler-macro not (x) | |
489 | (let ((value (js-compile-to-expression x))) | |
490 | (if (and (typep value 'op-form) | |
491 | (= (length (op-args value)) 2)) | |
492 | (let ((new-op (case (operator value) | |
493 | (== '!=) | |
494 | (< '>=) | |
495 | (> '<=) | |
496 | (<= '>) | |
497 | (>= '<) | |
498 | (!= '==) | |
499 | (=== '!==) | |
500 | (!== '===) | |
501 | (t nil)))) | |
502 | (if new-op | |
503 | (make-instance 'op-form :operator new-op | |
504 | :args (op-args value)) | |
505 | (make-instance 'one-op :pre-p t :op "!" | |
506 | :value value))) | |
507 | (make-instance 'one-op :pre-p t :op "!" | |
508 | :value value)))) | |
509 | ||
510 | ;;; function calls | |
511 | ||
512 | (defjsclass function-call (expression) | |
513 | ((function :initarg :function :accessor f-function) | |
514 | (args :initarg :args :accessor f-args))) | |
515 | ||
516 | (defun funcall-form-p (form) | |
517 | (and (listp form) | |
518 | (not (op-form-p form)) | |
519 | (not (js-compiler-macro-form-p form)))) | |
520 | ||
521 | (defmethod js-to-strings ((form function-call) start-pos) | |
522 | (let* ((value-string-lists | |
523 | (mapcar #'(lambda (x) (js-to-strings x (+ start-pos 2))) | |
524 | (f-args form))) | |
525 | (max-length (- 80 start-pos 2)) | |
526 | (args (dwim-join value-string-lists max-length | |
527 | :start "(" :end ")" :join-after ","))) | |
5ae77c6e MB |
528 | (etypecase (f-function form) |
529 | (js-lambda | |
530 | (dwim-join (list (append (dwim-join (list (js-to-strings (f-function form) (+ start-pos 2))) | |
531 | max-length | |
532 | :start "(" :end ")" :separator "") | |
533 | args)) | |
534 | max-length | |
535 | :separator "")) | |
536 | ((or js-variable js-aref js-slot-value) | |
537 | (dwim-join (list (js-to-strings (f-function form) (+ start-pos 2)) | |
538 | args) | |
539 | max-length | |
540 | :separator ""))))) | |
8e198a08 MB |
541 | |
542 | (defjsclass method-call (expression) | |
543 | ((method :initarg :method :accessor m-method) | |
544 | (object :initarg :object :accessor m-object) | |
545 | (args :initarg :args :accessor m-args))) | |
546 | ||
547 | (defmethod js-to-strings ((form method-call) start-pos) | |
548 | (let ((fname (dwim-join (list (js-to-strings (m-object form) (+ start-pos 2)) | |
549 | (list (symbol-to-js (m-method form)))) | |
550 | (- 80 start-pos 2) | |
551 | :end "(" | |
552 | :separator ""))) | |
553 | (let ((butlast (butlast fname)) | |
554 | (last (car (last fname)))) | |
555 | (nconc butlast | |
556 | (dwim-join (mapcar #'(lambda (x) (js-to-strings x (+ start-pos 2))) | |
557 | (m-args form)) | |
558 | (- 80 start-pos 2) | |
559 | :start last | |
560 | :end ")" | |
561 | :join-after ","))))) | |
562 | ||
563 | (defun method-call-p (form) | |
564 | (and (funcall-form-p form) | |
565 | (symbolp (first form)) | |
566 | (eql (char (symbol-name (first form)) 0) #\.))) | |
567 | ||
568 | ;;; body forms | |
569 | ||
570 | (defjsclass js-body (expression) | |
571 | ((stmts :initarg :stmts :accessor b-stmts) | |
572 | (indent :initarg :indent :initform "" :accessor b-indent))) | |
573 | ||
574 | (define-js-compiler-macro progn (&rest body) | |
575 | (make-instance 'js-body | |
576 | :stmts (mapcar #'js-compile-to-statement body))) | |
577 | ||
578 | (defmethod initialize-instance :after ((body js-body) &rest initargs) | |
579 | (declare (ignore initargs)) | |
580 | (let* ((stmts (b-stmts body)) | |
581 | (last (last stmts)) | |
582 | (last-stmt (car last))) | |
583 | (when (typep last-stmt 'js-body) | |
584 | (setf (b-stmts body) | |
585 | (nconc (butlast stmts) | |
586 | (b-stmts last-stmt)))))) | |
587 | ||
588 | ||
589 | (defmethod js-to-statement-strings ((body js-body) start-pos) | |
590 | (dwim-join (mapcar #'(lambda (x) (js-to-statement-strings x (+ start-pos 2))) | |
591 | (b-stmts body)) | |
592 | (- 80 start-pos 2) | |
593 | :join-after ";" | |
594 | :append-to-last #'special-append-to-last | |
595 | :start (b-indent body) :collect nil | |
596 | :end ";")) | |
597 | ||
598 | (defmethod js-to-strings ((body js-body) start-pos) | |
599 | (dwim-join (mapcar #'(lambda (x) (js-to-strings x (+ start-pos 2))) | |
600 | (b-stmts body)) | |
601 | (- 80 start-pos 2) | |
602 | :append-to-last #'special-append-to-last | |
603 | :join-after "," | |
604 | :start (b-indent body))) | |
605 | ||
606 | (defjsclass js-sub-body (js-body) | |
607 | (stmts indent)) | |
608 | ||
609 | (defmethod js-to-statement-strings ((body js-sub-body) start-pos) | |
30b3e3eb | 610 | (declare (ignore start-pos)) |
8e198a08 MB |
611 | (nconc (list "{") (call-next-method) (list "}"))) |
612 | ||
613 | (defmethod expression-precedence ((body js-body)) | |
614 | (if (= (length (b-stmts body)) 1) | |
615 | (expression-precedence (first (b-stmts body))) | |
616 | (gethash 'comma *op-precedence-hash*))) | |
617 | ||
618 | ;;; function definition | |
619 | ||
d3694c57 MB |
620 | (defjsclass js-lambda (expression) |
621 | ((args :initarg :args :accessor lambda-args) | |
622 | (body :initarg :body :accessor lambda-body))) | |
623 | ||
624 | (define-js-compiler-macro lambda (args &rest body) | |
625 | (make-instance 'js-lambda | |
626 | :args (mapcar #'js-compile-to-symbol args) | |
627 | :body (make-instance 'js-body | |
628 | :indent " " | |
629 | :stmts (mapcar #'js-compile-to-statement body)))) | |
630 | ||
631 | (defmethod js-to-strings ((lambda js-lambda) start-pos) | |
632 | (let ((fun-header (dwim-join (mapcar #'(lambda (x) | |
633 | (list (symbol-to-js x))) | |
634 | (lambda-args lambda)) | |
635 | (- 80 start-pos 2) | |
636 | :start (function-start-string lambda) | |
637 | :end ") {" :join-after ",")) | |
638 | (fun-body (js-to-statement-strings (lambda-body lambda) (+ start-pos 2)))) | |
639 | (nconc fun-header fun-body (list "}")))) | |
640 | ||
641 | (defmethod function-start-string ((lambda js-lambda)) | |
642 | "function (") | |
643 | ||
644 | (defmethod js-to-statement-strings ((lambda js-lambda) start-pos) | |
645 | (js-to-strings lambda start-pos)) | |
646 | ||
647 | (defjsclass js-defun (js-lambda) | |
648 | ((name :initarg :name :accessor defun-name))) | |
8e198a08 MB |
649 | |
650 | (define-js-compiler-macro defun (name args &rest body) | |
651 | (make-instance 'js-defun | |
652 | :name (js-compile-to-symbol name) | |
653 | :args (mapcar #'js-compile-to-symbol args) | |
654 | :body (make-instance 'js-body | |
655 | :indent " " | |
656 | :stmts (mapcar #'js-compile-to-statement body)))) | |
657 | ||
d3694c57 MB |
658 | (defmethod function-start-string ((defun js-defun)) |
659 | (format nil "function ~A(" (symbol-to-js (defun-name defun)))) | |
8e198a08 MB |
660 | |
661 | ;;; object creation | |
662 | ||
663 | (defjsclass js-object (expression) | |
664 | ((slots :initarg :slots | |
665 | :accessor o-slots))) | |
666 | ||
667 | (define-js-compiler-macro create (&rest args) | |
668 | (make-instance 'js-object | |
669 | :slots (loop for (name val) on args by #'cddr | |
670 | collect (list (js-compile-to-symbol name) | |
671 | (js-compile-to-expression val))))) | |
672 | ||
673 | (defmethod js-to-strings ((object js-object) start-pos) | |
674 | (let ((value-string-lists | |
675 | (mapcar #'(lambda (slot) | |
676 | (dwim-join (list (js-to-strings (second slot) (+ start-pos 4))) | |
677 | (- 80 start-pos 2) | |
678 | :start (concatenate 'string (symbol-to-js (first slot)) " : ") | |
679 | :white-space " ")) (o-slots object))) | |
680 | (max-length (- 80 start-pos 2))) | |
681 | (dwim-join value-string-lists max-length | |
682 | :start "{ " | |
683 | :end " }" | |
684 | :join-after ", " | |
685 | :white-space " " | |
686 | :collect nil))) | |
687 | ||
688 | (defjsclass js-slot-value (expression) | |
689 | ((object :initarg :object | |
690 | :accessor sv-object) | |
691 | (slot :initarg :slot | |
692 | :accessor sv-slot))) | |
693 | ||
694 | (define-js-compiler-macro slot-value (obj slot) | |
695 | (make-instance 'js-slot-value :object (js-compile-to-expression obj) | |
696 | :slot (js-compile-to-symbol slot))) | |
697 | ||
698 | (defmethod js-to-strings ((sv js-slot-value) start-pos) | |
699 | (append-to-last (js-to-strings (sv-object sv) start-pos) | |
700 | (format nil ".~A" (symbol-to-js (sv-slot sv))))) | |
701 | ||
702 | (defjsmacro with-slots (slots object &rest body) | |
703 | `(symbol-macrolet ,(mapcar #'(lambda (slot) | |
704 | `(,slot '(slot-value ,object ',slot))) | |
705 | slots) | |
706 | ,@body)) | |
707 | ||
708 | ;;; macros | |
709 | ||
710 | (define-js-compiler-macro macrolet (macros &rest body) | |
711 | (let* ((macro-env (make-hash-table)) | |
712 | (*js-macro-env* (cons macro-env *js-macro-env*))) | |
713 | (dolist (macro macros) | |
714 | (destructuring-bind (name arglist &rest body) macro | |
715 | (setf (gethash name macro-env) | |
716 | (compile nil `(lambda ,arglist ,@body))))) | |
717 | (js-compile `(progn ,@body)))) | |
718 | ||
719 | (defjsmacro symbol-macrolet (macros &rest body) | |
720 | `(macrolet ,(mapcar #'(lambda (macro) | |
721 | `(,(first macro) () ,@(rest macro))) macros) | |
722 | ,@body)) | |
723 | ||
724 | ;;; lisp eval | |
725 | ||
726 | (defjsmacro lisp (&rest forms) | |
727 | (eval (cons 'progn forms))) | |
728 | ||
729 | ;;; if | |
730 | ||
731 | (defjsclass js-if (expression) | |
732 | ((test :initarg :test | |
733 | :accessor if-test) | |
734 | (then :initarg :then | |
735 | :accessor if-then) | |
736 | (else :initarg :else | |
737 | :accessor if-else))) | |
738 | ||
739 | (define-js-compiler-macro if (test then &optional else) | |
740 | (make-instance 'js-if :test (js-compile-to-expression test) | |
741 | :then (js-compile-to-body then :indent " ") | |
742 | :else (when else | |
743 | (js-compile-to-body else :indent " ")))) | |
744 | ||
745 | (defmethod initialize-instance :after ((if js-if) &rest initargs) | |
746 | (declare (ignore initargs)) | |
747 | (when (and (if-then if) | |
748 | (typep (if-then if) 'js-sub-body)) | |
749 | (change-class (if-then if) 'js-body)) | |
750 | (when (and (if-else if) | |
751 | (typep (if-else if) 'js-sub-body)) | |
752 | (change-class (if-else if) 'js-body))) | |
753 | ||
754 | (defmethod js-to-statement-strings ((if js-if) start-pos) | |
755 | (let ((if-strings (dwim-join (list (js-to-strings (if-test if) 0)) | |
756 | (- 80 start-pos 2) | |
757 | :start "if (" | |
758 | :end ") {")) | |
759 | (then-strings (js-to-statement-strings (if-then if) (+ start-pos 2))) | |
760 | (else-strings (when (if-else if) | |
761 | (js-to-statement-strings (if-else if) | |
762 | (+ start-pos 2))))) | |
763 | (nconc if-strings then-strings (if else-strings | |
764 | (nconc (list "} else {") else-strings (list "}")) | |
765 | (list "}"))))) | |
766 | ||
767 | (defmethod expression-precedence ((if js-if)) | |
768 | (gethash 'if *op-precedence-hash*)) | |
769 | ||
770 | (defmethod js-to-strings ((if js-if) start-pos) | |
771 | (assert (typep (if-then if) 'expression)) | |
772 | (when (if-else if) | |
773 | (assert (typep (if-else if) 'expression))) | |
774 | (dwim-join (list (append-to-last (js-to-strings (if-test if) start-pos) " ?") | |
775 | (let* ((new-then (make-instance 'js-body | |
776 | :stmts (b-stmts (if-then if)) | |
777 | :indent "")) | |
778 | (res (js-to-strings new-then start-pos))) | |
779 | (if (>= (expression-precedence (if-then if)) | |
780 | (expression-precedence if)) | |
781 | (klammer res) | |
782 | res)) | |
783 | (list ":") | |
784 | (if (if-else if) | |
785 | (let* ((new-else (make-instance 'js-body | |
786 | :stmts (b-stmts (if-else if)) | |
787 | :indent "")) | |
788 | (res (js-to-strings new-else start-pos))) | |
789 | (if (>= (expression-precedence (if-else if)) | |
790 | (expression-precedence if)) | |
791 | (klammer res) | |
792 | res)) | |
793 | (list "undefined"))) | |
794 | (- 80 start-pos 2) | |
795 | :white-space " ")) | |
796 | ||
797 | (defjsmacro when (test &rest body) | |
798 | `(if ,test (progn ,@body))) | |
799 | ||
800 | (defjsmacro unless (test &rest body) | |
801 | `(if (not ,test) (progn ,@body))) | |
802 | ||
803 | ;;; single keyword expressions and statements | |
804 | ||
805 | (defmacro define-js-single-op (name &optional (superclass 'expression)) | |
806 | (let ((js-name (intern (concatenate 'string "JS-" (symbol-name name)) #.*package*))) | |
807 | `(progn | |
808 | (defjsclass ,js-name (,superclass) | |
809 | (value)) | |
810 | (define-js-compiler-macro ,name (value) | |
811 | (make-instance ',js-name :value (js-compile-to-expression value))) | |
812 | (defmethod ,(if (eql superclass 'expression) | |
813 | 'js-to-strings | |
814 | 'js-to-statement-strings) ((,name ,js-name) start-pos) | |
815 | (dwim-join (list (js-to-strings (value ,name) (+ start-pos 2))) | |
816 | (- 80 start-pos 2) | |
817 | :start ,(concatenate 'string (string-downcase (symbol-name name)) " ") | |
818 | :white-space " "))))) | |
819 | ||
820 | ||
821 | (define-js-single-op return statement) | |
822 | (define-js-single-op throw statement) | |
823 | (define-js-single-op delete) | |
824 | (define-js-single-op void) | |
825 | (define-js-single-op typeof) | |
826 | (define-js-single-op instanceof) | |
827 | (define-js-single-op new) | |
828 | ||
829 | ;;; assignment | |
830 | ||
831 | (defjsclass js-setf (expression) | |
832 | ((lhs :initarg :lhs :accessor setf-lhs) | |
833 | (rhsides :initarg :rhsides :accessor setf-rhsides))) | |
834 | ||
835 | (defun assignment-op (op) | |
836 | (case op | |
837 | (+ '+=) | |
838 | (~ '~=) | |
839 | (\& '\&=) | |
840 | (\| '\|=) | |
841 | (- '-=) | |
842 | (* '*=) | |
843 | (% '%=) | |
844 | (>> '>>=) | |
845 | (^ '^=) | |
846 | (<< '<<=) | |
847 | (>>> '>>>=) | |
848 | (/ '/=) | |
849 | (t nil))) | |
850 | ||
851 | (defun make-js-test (lhs rhs) | |
852 | (if (and (typep rhs 'op-form) | |
853 | (member lhs (op-args rhs) :test #'js-equal)) | |
854 | (let ((args-without (remove lhs (op-args rhs) | |
855 | :count 1 :test #'js-equal)) | |
856 | (args-without-first (remove lhs (op-args rhs) | |
857 | :count 1 :end 1 | |
858 | :test #'js-equal)) | |
859 | (one (list (make-instance 'number-literal :value 1)))) | |
860 | #+nil | |
861 | (format t "OPERATOR: ~S, ARGS-WITHOUT: ~S, ARGS-WITHOUT-FIRST ~S~%" | |
862 | (operator rhs) | |
863 | args-without | |
864 | args-without-first) | |
865 | (cond ((and (js-equal args-without one) | |
866 | (eql (operator rhs) '+)) | |
867 | (make-instance 'one-op :pre-p nil :op "++" | |
868 | :value lhs)) | |
869 | ((and (js-equal args-without-first one) | |
870 | (eql (operator rhs) '-)) | |
871 | (make-instance 'one-op :pre-p nil :op "--" | |
872 | :value lhs)) | |
873 | ((and (assignment-op (operator rhs)) | |
874 | (member (operator rhs) | |
875 | '(+ *))) | |
876 | (make-instance 'op-form | |
877 | :operator (assignment-op (operator rhs)) | |
878 | :args (list lhs (make-instance 'op-form | |
879 | :operator (operator rhs) | |
880 | :args args-without)))) | |
881 | ((and (assignment-op (operator rhs)) | |
882 | (js-equal (first (op-args rhs)) lhs)) | |
883 | (make-instance 'op-form | |
884 | :operator (assignment-op (operator rhs)) | |
885 | :args (list lhs (make-instance 'op-form | |
886 | :operator (operator rhs) | |
887 | :args (cdr (op-args rhs)))))) | |
888 | (t (make-instance 'js-setf :lhs lhs :rhsides (list rhs))))) | |
889 | (make-instance 'js-setf :lhs lhs :rhsides (list rhs)))) | |
890 | ||
891 | (define-js-compiler-macro setf (&rest args) | |
892 | (let ((assignments (loop for (lhs rhs) on args by #'cddr | |
893 | for rexpr = (js-compile-to-expression rhs) | |
894 | for lexpr = (js-compile-to-expression lhs) | |
895 | collect (make-js-test lexpr rexpr)))) | |
896 | (if (= (length assignments) 1) | |
897 | (first assignments) | |
898 | (make-instance 'js-body :indent "" :stmts assignments)))) | |
899 | ||
900 | (defmethod js-to-strings ((setf js-setf) start-pos) | |
901 | (dwim-join (cons (js-to-strings (setf-lhs setf) start-pos) | |
902 | (mapcar #'(lambda (x) (js-to-strings x start-pos)) (setf-rhsides setf))) | |
903 | (- 80 start-pos 2) | |
904 | :join-after " =")) | |
905 | ||
906 | (defmethod expression-precedence ((setf js-setf)) | |
907 | (gethash '= *op-precedence-hash*)) | |
908 | ||
909 | ;;; defvar | |
910 | ||
911 | (defjsclass js-defvar (statement) | |
912 | ((names :initarg :names :accessor var-names) | |
913 | (value :initarg :value :accessor var-value))) | |
914 | ||
915 | (define-js-compiler-macro defvar (name &optional value) | |
916 | (make-instance 'js-defvar :names (list (js-compile-to-symbol name)) | |
917 | :value (when value (js-compile-to-expression value)))) | |
918 | ||
919 | (defmethod js-to-statement-strings ((defvar js-defvar) start-pos) | |
920 | (dwim-join (nconc (mapcar #'(lambda (x) (list (symbol-to-js x))) (var-names defvar)) | |
921 | (when (var-value defvar) | |
922 | (list (js-to-strings (var-value defvar) start-pos)))) | |
923 | (- 80 start-pos 2) | |
924 | :join-after " =" | |
925 | :start "var " :end ";")) | |
926 | ||
927 | ;;; let | |
928 | ||
929 | (define-js-compiler-macro let (decls &rest body) | |
930 | (let ((single-defvar (make-instance 'js-defvar | |
931 | :names (mapcar #'js-compile-to-symbol | |
932 | (remove-if-not #'atom decls)) | |
933 | :value nil)) | |
934 | (defvars (mapcar #'(lambda (decl) | |
935 | (let ((name (first decl)) | |
936 | (value (second decl))) | |
937 | (make-instance 'js-defvar | |
938 | :names (list (js-compile-to-symbol name)) | |
939 | :value (js-compile-to-expression value)))) | |
940 | (remove-if #'atom decls)))) | |
941 | (make-instance 'js-sub-body | |
942 | :indent " " | |
943 | :stmts (nconc (when (var-names single-defvar) (list single-defvar)) | |
944 | defvars | |
945 | (mapcar #'js-compile-to-statement body))))) | |
946 | ||
947 | ;;; iteration | |
948 | ||
949 | (defjsclass js-for (statement) | |
950 | ((vars :initarg :vars :accessor for-vars) | |
951 | (steps :initarg :steps :accessor for-steps) | |
952 | (check :initarg :check :accessor for-check) | |
953 | (body :initarg :body :accessor for-body))) | |
954 | ||
955 | (defun make-for-vars (decls) | |
956 | (loop for decl in decls | |
957 | for var = (if (atom decl) decl (first decl)) | |
958 | for init = (if (atom decl) nil (second decl)) | |
959 | collect (make-instance 'js-defvar :names (list (js-compile-to-symbol var)) | |
960 | :value (js-compile-to-expression init)))) | |
961 | ||
962 | (defun make-for-steps (decls) | |
963 | (loop for decl in decls | |
964 | when (= (length decl) 3) | |
965 | collect (js-compile-to-expression (third decl)))) | |
966 | ||
967 | (define-js-compiler-macro do (decls termination &rest body) | |
968 | (let ((vars (make-for-vars decls)) | |
969 | (steps (make-for-steps decls)) | |
970 | (check (js-compile-to-expression (list 'not (first termination)))) | |
971 | (body (js-compile-to-body (cons 'progn body) :indent " "))) | |
972 | (make-instance 'js-for | |
973 | :vars vars | |
974 | :steps steps | |
975 | :check check | |
976 | :body body))) | |
977 | ||
978 | (defjsmacro dotimes (iter &rest body) | |
979 | (let ((var (first iter)) | |
980 | (times (second iter))) | |
807be2bc IT |
981 | `(do ((,var 0 (1+ ,var))) |
982 | ((>= ,var ,times)) | |
8e198a08 MB |
983 | ,@body))) |
984 | ||
985 | (defjsmacro dolist (i-array &rest body) | |
986 | (let ((var (first i-array)) | |
987 | (array (second i-array)) | |
988 | (arrvar (js-gensym "arr")) | |
989 | (idx (js-gensym "i"))) | |
990 | `(let ((,arrvar ,array)) | |
807be2bc | 991 | (do ((,idx 0 (1+ ,idx))) |
8e198a08 MB |
992 | ((>= ,idx (slot-value ,arrvar 'length))) |
993 | (let ((,var (aref ,arrvar ,idx))) | |
994 | ,@body))))) | |
995 | ||
996 | (defmethod js-to-statement-strings ((for js-for) start-pos) | |
997 | (let* ((init (dwim-join (mapcar #'(lambda (x) | |
998 | (dwim-join (list (list (symbol-to-js (first (var-names x)))) | |
999 | (js-to-strings (var-value x) | |
1000 | (+ start-pos 2))) | |
1001 | (- 80 start-pos 2) | |
1002 | :join-after " =")) | |
1003 | (for-vars for)) | |
1004 | (- 80 start-pos 2) | |
1005 | :start "var " :join-after ",")) | |
1006 | (check (js-to-strings (for-check for) (+ start-pos 2))) | |
1007 | (steps (dwim-join (mapcar #'(lambda (x var) | |
1008 | (dwim-join | |
1009 | (list (list (symbol-to-js (first (var-names var)))) | |
1010 | (js-to-strings x (- start-pos 2))) | |
1011 | (- 80 start-pos 2) | |
1012 | :join-after " =")) | |
1013 | (for-steps for) | |
1014 | (for-vars for)) | |
1015 | (- 80 start-pos 2) | |
1016 | :join-after ",")) | |
1017 | (header (dwim-join (list init check steps) | |
1018 | (- 80 start-pos 2) | |
1019 | :start "for (" :end ") {" | |
1020 | :join-after ";")) | |
1021 | (body (js-to-statement-strings (for-body for) (+ start-pos 2)))) | |
1022 | (nconc header body (list "}")))) | |
1023 | ||
1024 | (defjsclass for-each (statement) | |
1025 | ((name :initarg :name :accessor fe-name) | |
1026 | (value :initarg :value :accessor fe-value) | |
1027 | (body :initarg :body :accessor fe-body))) | |
1028 | ||
1029 | (define-js-compiler-macro doeach (decl &rest body) | |
1030 | (make-instance 'for-each :name (js-compile-to-symbol (first decl)) | |
1031 | :value (js-compile-to-expression (second decl)) | |
1032 | :body (js-compile-to-body (cons 'progn body) :indent " "))) | |
1033 | ||
1034 | (defmethod js-to-statement-strings ((fe for-each) start-pos) | |
1035 | (let ((header (dwim-join (list (list (symbol-to-js (fe-name fe))) | |
1036 | (list "in") | |
1037 | (js-to-strings (fe-value fe) (+ start-pos 2))) | |
1038 | (- 80 start-pos 2) | |
1039 | :start "for (var " | |
1040 | :end ") {")) | |
1041 | (body (js-to-statement-strings (fe-body fe) (+ start-pos 2)))) | |
1042 | (nconc header body (list "}")))) | |
1043 | ||
1044 | (defjsclass js-while (statement) | |
1045 | ((check :initarg :check :accessor while-check) | |
1046 | (body :initarg :body :accessor while-body))) | |
1047 | ||
1048 | (define-js-compiler-macro while (check &rest body) | |
1049 | (make-instance 'js-while | |
1050 | :check (js-compile-to-expression check) | |
1051 | :body (js-compile-to-body (cons 'progn body) :indent " "))) | |
1052 | ||
1053 | (defmethod js-to-statement-strings ((while js-while) start-pos) | |
1054 | (let ((header (dwim-join (list (js-to-strings (while-check while) (+ start-pos 2))) | |
1055 | (- 80 start-pos 2) | |
1056 | :start "while (" | |
1057 | :end ") {")) | |
1058 | (body (js-to-statement-strings (while-body while) (+ start-pos 2)))) | |
1059 | (nconc header body (list "}")))) | |
1060 | ||
1061 | ;;; with | |
1062 | ||
1063 | (defjsclass js-with (statement) | |
1064 | ((obj :initarg :obj :accessor with-obj) | |
1065 | (body :initarg :body :accessor with-body))) | |
1066 | ||
1067 | (define-js-compiler-macro with (statement &rest body) | |
1068 | (make-instance 'js-with | |
1069 | :obj (js-compile-to-expression (first statement)) | |
1070 | :body (js-compile-to-body (cons 'progn body) :indent " "))) | |
1071 | ||
1072 | (defmethod js-to-statement-strings ((with js-with) start-pos) | |
1073 | (nconc (dwim-join (list (js-to-strings (with-obj with) (+ start-pos 2))) | |
1074 | (- 80 start-pos 2) | |
1075 | :start "with (" :end ") {") | |
1076 | (js-to-statement-strings (with-body with) (+ start-pos 2)) | |
1077 | (list "}"))) | |
1078 | ||
1079 | ;;; case | |
1080 | ||
1081 | (defjsclass js-case (statement) | |
1082 | ((value :initarg :value :accessor case-value) | |
1083 | (clauses :initarg :clauses :accessor case-clauses))) | |
1084 | ||
1085 | (define-js-compiler-macro case (value &rest clauses) | |
1086 | (let ((clauses (mapcar #'(lambda (clause) | |
1087 | (let ((val (first clause)) | |
1088 | (body (cdr clause))) | |
1089 | (list (if (eql val 'default) | |
1090 | 'default | |
1091 | (js-compile-to-expression val)) | |
1092 | (js-compile-to-body (cons 'progn body) :indent " ")))) | |
1093 | clauses)) | |
1094 | (check (js-compile-to-expression value))) | |
1095 | (make-instance 'js-case :value check | |
1096 | :clauses clauses))) | |
1097 | ||
1098 | (defmethod js-to-statement-strings ((case js-case) start-pos) | |
1099 | (let ((body (mapcan #'(lambda (clause) | |
1100 | (let ((val (car clause)) | |
1101 | (body (second clause))) | |
1102 | (dwim-join (list (if (eql val 'default) | |
1103 | (list "") | |
1104 | (js-to-strings val (+ start-pos 2))) | |
1105 | (js-to-statement-strings body (+ start-pos 2))) | |
1106 | (- 80 start-pos 2) | |
1107 | :start (if (eql val 'default) " default" " case ") | |
1108 | :white-space " " | |
1109 | :join-after ":"))) (case-clauses case)))) | |
1110 | ||
1111 | #+nil | |
1112 | (format t "body: ~S~%" body) | |
1113 | (nconc (dwim-join (list (js-to-strings (case-value case) (+ start-pos 2))) | |
1114 | (- 80 start-pos 2) | |
1115 | :start "switch (" :end ") {") | |
1116 | body | |
1117 | (list "}")))) | |
1118 | ||
1119 | ;;; throw catch | |
1120 | ||
1121 | (defjsclass js-try (statement) | |
1122 | ((body :initarg :body :accessor try-body) | |
1123 | (catch :initarg :catch :accessor try-catch) | |
1124 | (finally :initarg :finally :accessor try-finally))) | |
1125 | ||
1126 | (define-js-compiler-macro try (body &rest clauses) | |
1127 | (let ((body (js-compile-to-body body :indent " ")) | |
1128 | (catch (cdr (assoc :catch clauses))) | |
1129 | (finally (cdr (assoc :finally clauses)))) | |
1130 | (make-instance 'js-try | |
1131 | :body body | |
1132 | :catch (when catch (list (js-compile-to-symbol (caar catch)) | |
1133 | (js-compile-to-body (cons 'progn (cdr catch)) | |
1134 | :indent " "))) | |
1135 | :finally (when finally (js-compile-to-body (cons 'progn finally) | |
1136 | :indent " "))))) | |
1137 | ||
1138 | (defmethod js-to-statement-strings ((try js-try) start-pos) | |
1139 | (let* ((catch (try-catch try)) | |
1140 | (finally (try-finally try)) | |
1141 | (catch-list (when catch | |
1142 | (nconc | |
1143 | (dwim-join (list (list (symbol-to-js (first catch)))) | |
1144 | (- 80 start-pos 2) | |
1145 | :start "} catch (" | |
1146 | :end ") {") | |
1147 | (js-to-statement-strings (second catch) (+ start-pos 2))))) | |
1148 | (finally-list (when finally | |
1149 | (nconc (list "} finally {") | |
1150 | (js-to-statement-strings finally (+ start-pos 2)))))) | |
1151 | (nconc (list "try {") | |
1152 | (js-to-statement-strings (try-body try) (+ start-pos 2)) | |
1153 | catch-list | |
1154 | finally-list | |
1155 | (list "}")))) | |
1156 | ||
1157 | ;;; regex | |
1158 | ||
1159 | (defjsclass regex (expression) | |
1160 | (value)) | |
1161 | ||
1162 | (define-js-compiler-macro regex (regex) | |
1163 | (make-instance 'regex :value (string regex))) | |
1164 | ||
1165 | ;;; conditional compilation | |
1166 | ||
1167 | (defjsclass cc-if () | |
1168 | ((test :initarg :test :accessor cc-if-test) | |
1169 | (body :initarg :body :accessor cc-if-body))) | |
1170 | ||
1171 | (defmethod js-to-statement-strings ((cc cc-if) start-pos) | |
1172 | (nconc (list (format nil "/*@if ~A" (cc-if-test cc))) | |
1173 | (mapcan #'(lambda (x) (js-to-strings x start-pos)) (cc-if-body cc)) | |
1174 | (list "@end @*/"))) | |
1175 | ||
1176 | (define-js-compiler-macro cc-if (test &rest body) | |
1177 | (make-instance 'cc-if :test test | |
1178 | :body (mapcar #'js-compile body))) | |
1179 | ||
1180 | ;;; compiler | |
1181 | ||
1182 | (defun js-compile (form) | |
1183 | (setf form (js-expand-form form)) | |
1184 | (cond ((stringp form) | |
1185 | (make-instance 'string-literal :value form)) | |
1186 | ((numberp form) | |
1187 | (make-instance 'number-literal :value form)) | |
1188 | ((symbolp form) | |
1189 | (let ((c-macro (js-get-compiler-macro form))) | |
1190 | (if c-macro | |
1191 | (funcall c-macro) | |
1192 | (make-instance 'js-variable :value form)))) | |
1193 | ((and (consp form) | |
1194 | (eql (first form) 'quote)) | |
1195 | (second form)) | |
1196 | ((consp form) | |
1197 | (js-compile-list form)) | |
1198 | (t (error "Unknown atomar expression ~S" form)))) | |
1199 | ||
1200 | (defun js-compile-list (form) | |
1201 | (let* ((name (car form)) | |
1202 | (args (cdr form)) | |
1203 | (js-form (js-get-compiler-macro name))) | |
1204 | (cond (js-form | |
1205 | (apply js-form args)) | |
1206 | ||
1207 | ((op-form-p form) | |
1208 | (make-instance 'op-form | |
1209 | :operator (js-convert-op-name (js-compile-to-symbol (first form))) | |
1210 | :args (mapcar #'js-compile-to-expression (rest form)))) | |
1211 | ||
1212 | ((method-call-p form) | |
1213 | (make-instance 'method-call | |
1214 | :method (js-compile-to-symbol (first form)) | |
1215 | :object (js-compile-to-expression (second form)) | |
1216 | :args (mapcar #'js-compile-to-expression (cddr form)))) | |
1217 | ||
1218 | ((funcall-form-p form) | |
1219 | (make-instance 'function-call | |
1220 | :function (js-compile-to-expression (first form)) | |
1221 | :args (mapcar #'js-compile-to-expression (rest form)))) | |
1222 | ||
1223 | (t (error "Unknown form ~S" form))))) | |
1224 | ||
1225 | (defun js-compile-to-expression (form) | |
1226 | (let ((res (js-compile form))) | |
1227 | (assert (typep res 'expression)) | |
1228 | res)) | |
1229 | ||
1230 | (defun js-compile-to-symbol (form) | |
1231 | (let ((res (js-compile form))) | |
1232 | (when (typep res 'js-variable ) | |
1233 | (setf res (value res))) | |
1234 | (assert (symbolp res)) | |
1235 | res)) | |
1236 | ||
1237 | (defun js-compile-to-statement (form) | |
1238 | (let ((res (js-compile form))) | |
1239 | (assert (typep res 'statement)) | |
1240 | res)) | |
1241 | ||
1242 | (defun js-compile-to-body (form &key (indent "")) | |
1243 | (let ((res (js-compile-to-statement form))) | |
1244 | (if (typep res 'js-body) | |
1245 | (progn (setf (b-indent res) indent) | |
1246 | res) | |
1247 | (make-instance 'js-body | |
1248 | :indent indent | |
1249 | :stmts (list res))))) | |
1250 | ||
1251 | ;;; Math library | |
1252 | (defjsmacro floor (expr) | |
1253 | `(*Math.floor ,expr)) | |
1254 | ||
1255 | (defjsmacro random () | |
1256 | `(*Math.random)) | |
1257 | ||
1258 | ;;; helper macros | |
1259 | ||
1260 | (define-js-compiler-macro js (&rest body) | |
1261 | (make-instance 'string-literal | |
1262 | :value (string-join (js-to-statement-strings | |
1263 | (js-compile (cons 'progn body)) 0) " "))) | |
1264 | ||
1265 | (define-js-compiler-macro js-inline (&rest body) | |
1266 | (make-instance 'string-literal | |
1267 | :value (concatenate | |
1268 | 'string | |
1269 | "javascript:" | |
1270 | (string-join (js-to-statement-strings | |
1271 | (js-compile (cons 'progn body)) 0) " ")))) | |
1272 | ||
1273 | ||
1274 | (defmacro js (&rest body) | |
f0b5d9e0 | 1275 | `(js* '(progn ,@body))) |
8e198a08 | 1276 | |
d006f536 | 1277 | (defmacro js* (&rest body) |
f0b5d9e0 MB |
1278 | "Return the javascript string representing BODY. |
1279 | ||
1280 | Body is evaluated." | |
d006f536 MB |
1281 | `(string-join |
1282 | (js-to-statement-strings (js-compile (list 'progn ,@body)) 0) | |
1283 | (string #\Newline))) | |
1284 | ||
8e198a08 MB |
1285 | (defun js-to-string (expr) |
1286 | (string-join | |
1287 | (js-to-statement-strings (js-compile expr) 0) | |
1288 | (string #\Newline))) | |
1289 | ||
1290 | (defun js-to-line (expr) | |
1291 | (string-join | |
1292 | (js-to-statement-strings (js-compile expr) 0) " ")) | |
1293 | ||
1294 | (defmacro js-file (&rest body) | |
1295 | `(html | |
1296 | (:princ | |
1297 | (js ,@body)))) | |
1298 | ||
1299 | (defmacro js-script (&rest body) | |
1300 | `((:script :type "text/javascript") | |
1301 | (:princ (format nil "~%// <![CDATA[~%")) | |
1302 | (:princ (js ,@body)) | |
1303 | (:princ (format nil "~%// ]]>~%")))) | |
1304 | ||
1305 | (defmacro js-inline (&rest body) | |
f0b5d9e0 | 1306 | `(js-inline '(progn ,@body))) |
8e198a08 | 1307 | |
d006f536 MB |
1308 | (defmacro js-inline* (&rest body) |
1309 | "Just like JS-INLINE except that BODY is evaluated before being | |
1310 | converted to javascript." | |
1311 | `(concatenate 'string "javascript:" | |
1312 | (string-join (js-to-statement-strings (js-compile (list 'progn ,@body)) 0) " "))) | |
1313 | ||
1314 |