1 (in-package :avm2-compiler
)
3 ;;; code to write out abc tag/hard coded simple .swf file to seekable
12 (defun write-u8 (byte &optional
(stream *standard-output
*))
13 (write-byte byte stream
))
15 (defun write-u16 (integer &optional
(stream *standard-output
*))
16 (write-byte (ldb (byte 8 0) integer
) stream
)
17 (write-byte (ldb (byte 8 8) integer
) stream
))
19 (defun write-u24 (integer &optional
(stream *standard-output
*))
20 (write-byte (ldb (byte 8 0) integer
) stream
)
21 (write-byte (ldb (byte 8 8) integer
) stream
)
22 (write-byte (ldb (byte 8 16) integer
) stream
))
24 (defun write-u32-raw (integer &optional
(stream *standard-output
*))
25 (write-byte (ldb (byte 8 0) integer
) stream
)
26 (write-byte (ldb (byte 8 8) integer
) stream
)
27 (write-byte (ldb (byte 8 16) integer
) stream
)
28 (write-byte (ldb (byte 8 24) integer
) stream
))
30 (defun write-variable-length-encoded (integer &optional
(stream *standard-output
*))
32 for i
= integer then i2
34 for b
= (ldb (byte 7 0) i
)
35 for done
= (or (= i2
0) (= i2 -
1))
37 do
(setf b
(logior #x80 b
))
38 do
(write-byte b stream
)
41 (defun write-u30 (integer &optional
(stream *standard-output
*))
42 (assert (<= 0 integer
(expt 2 30)))
43 (write-variable-length-encoded integer stream
))
45 (defun write-u32 (integer &optional
(stream *standard-output
*))
46 (assert (<= 0 integer
(expt 2 32)))
47 (write-variable-length-encoded integer stream
))
49 (defun write-s32 (integer &optional
(stream *standard-output
*))
50 ;; flash 9/mxmlc seems to want negative #s stored as if they were
51 ;; casted to uints first :/
53 (assert (<= (abs integer
) (expt 2 32)))
54 (when (< integer
0) (setf integer
(+ (expt 2 32) integer
)))
55 (write-variable-length-encoded integer stream
))
57 (defun write-double (float &optional
(stream *standard-output
*))
58 (loop with d
= (ieee-floats::encode-float64 float
)
59 for i from
0 below
64 by
8
60 do
(write-byte (ldb (byte 8 i
) d
) stream
)))
62 (defun write-counted-sequence (function seq
&key
(count-adjust 0) (start 0))
63 (declare (ignorable start
))
64 ;;(format *error-output* "counted seq ~d (+ ~d ) entries ~a ~%" (length seq) count-adjust function)
65 (if (<= (length seq
) start
)
68 (write-u30 (+ (length seq
) count-adjust
))
69 (loop for i from start below
(length seq
)
70 do
(funcall function
(elt seq i
))))))
72 (defun write-string-info (string &optional
(stream *standard-output
*))
73 (let ((utf8 (sb-ext:string-to-octets string
:external-format
:utf-8
)))
74 (write-u30 (length utf8
))
75 (write-sequence utf8 stream
)))
77 (defun write-0-terminated-string (string &optional
(stream *standard-output
*))
78 (let ((utf8 (sb-ext:string-to-octets string
:external-format
:utf-8
)))
79 (write-sequence utf8 stream
)
83 ;;; writers for asm level data structures
85 (defgeneric write-generic
(data &optional
*standard-output
*))
87 (defmethod write-generic ((trait avm2-asm
::trait-info
) &optional
(*standard-output
* *standard-output
*))
88 #+nil
(format *trace-output
* "trait-data : ~s ~s~%"
89 (avm2-asm::name trait
)
90 (avm2-asm::trait-data trait
))
91 (write-u30 (avm2-asm::name trait
))
92 (write-generic (avm2-asm::trait-data trait
))
93 (when (not (zerop (logand #x40
(avm2-asm::kind
(avm2-asm::trait-data trait
)))))
94 (write-counted-sequence 'write-u30
(avm2-asm::metadata trait
))))
96 (defmethod write-generic ((td avm2-asm
::trait-data-slot
/const
) &optional
(*standard-output
* *standard-output
*))
97 #+nil
(format *trace-output
* "trait-data-slot/const :~s ~s ~s ~s ~s~%"
99 ( avm2-asm
::slot-id td
)
100 ( avm2-asm
::type-name td
)
101 (avm2-asm::vindex td
)
102 (avm2-asm::vkind td
))
103 (write-u8 (avm2-asm::kind td
))
104 (write-u30 (avm2-asm::slot-id td
))
105 (write-u30 (avm2-asm::type-name td
))
106 (write-u30 (avm2-asm::vindex td
))
107 (unless (zerop (avm2-asm::vindex td
))
108 (write-u8 (avm2-asm::vkind td
))))
110 (defmethod write-generic ((td avm2-asm
::trait-data-class
) &optional
(*standard-output
* *standard-output
*))
111 (write-u8 (avm2-asm::kind td
))
112 (write-u30 (avm2-asm::slot-id td
))
113 (write-u30 (avm2-asm::classi td
)))
115 (defmethod write-generic ((td avm2-asm
::trait-data-function
) &optional
(*standard-output
* *standard-output
*))
116 (write-u8 (avm2-asm::kind td
))
117 (write-u30 (avm2-asm::slot-id td
))
118 (write-u30 (avm2-asm::fn td
)))
120 (defmethod write-generic ((td avm2-asm
::trait-data-method
/get
/set
) &optional
(*standard-output
* *standard-output
*))
121 (write-u8 (avm2-asm::kind td
))
122 (write-u30 (avm2-asm::slot-id td
))
123 (write-u30 (avm2-asm::method-id td
)))
126 (defun write-namespace (namespace &optional
(stream *standard-output
*))
127 "storing namespace_info as (kind name_index) for now "
128 (write-u8 (first namespace
) stream
)
129 (write-u30 (second namespace
) stream
))
131 (defun write-namespace-set (namespace-set &optional
(stream *standard-output
*))
132 "namespace-set (ns_set_info) = (ns1 ns2 ... nsN)"
133 (write-u30 (length namespace-set
) stream
)
134 (loop for i in namespace-set
135 do
(write-u30 i stream
)))
137 (defun write-multiname (multiname &optional
(stream *standard-output
*))
138 "multiname_info = (kind values*) for now, 0-2 values depending on kind"
139 ;;; TODO: error checking
140 (let ((kind (first multiname
)))
141 (write-u8 kind stream
)
142 (loop for i in
(cdr multiname
)
143 do
(write-u30 i stream
))))
146 (defun write-method-info (method-info &optional
(*standard-output
* *standard-output
*))
147 "u30 param-count, u30 return-type, u30 param-type[param-count], u30 name,
148 u8 flags, option_info, param-info ==
149 (name (param types = multinames) return-type flags (option) (param names)"
150 (destructuring-bind (name param-types return-type flags
&optional optional-params pnames
)
152 (write-u30 (length param-types
))
153 (write-u30 return-type
)
154 (map 'nil
'write-u30 param-types
)
157 (when optional-params
158 (write-u30 (length optional-params
))
159 ;; optional-param = (( val . kind )
160 (map 'nil
(lambda (a)
162 (write-u8 (cdr a
))) optional-params
))
164 (write-u30 (length pnames
))
165 (map 'nil
'write-u30 pnames
))))
167 (defun write-metadata-info (metadata &optional
(*standard-output
* *standard-output
*))
168 "metadata = (name (item_info ... )), item_info = (key . value)"
169 (write-u30 (car metadata
))
170 (write-u30 (length (second metadata
)))
171 (map 'nil
(lambda (a) (write-u30 (car a
)) (write-u30 (cdr a
)))
174 (defun write-instance (instance &optional
(*standard-output
* *standard-output
*))
176 (name super-name flags interfaces iinit traits
177 &optional protected-ns
) instance
178 #+nil
(format *trace-output
* "write instance ~s~% ~s ~s ~s ~s ~s ~s ~s~% ~s~%"
180 name super-name flags interfaces iinit traits protected-ns
181 (assoc iinit
(function-names *compiler-context
*) :test
'equal
))
183 (write-u30 super-name
)
185 (when (not (zerop (logand flags avm2-asm
::+class-protected-ns
+)))
186 (write-u30 protected-ns
))
187 (write-counted-sequence 'write-u30 interfaces
)
189 (write-counted-sequence 'write-generic traits
)))
191 (defun write-class (class &optional
(*standard-output
* *standard-output
*))
192 " class = (cinit trait1 trait2 ... traitN)"
193 #+nil
(format *trace-output
* "write class ~s~% ~s~% ~S~%"
195 (assoc (car class
) (function-names *compiler-context
*) :test
'equal
)
197 (write-u30 (car class
))
198 (write-counted-sequence 'write-generic
(cdr class
)))
202 (defun write-script (script &optional
(*standard-output
* *standard-output
*))
203 " script = (init trait1 trait2 ... traitN)"
204 (write-u30 (car script
))
205 (write-counted-sequence 'write-generic
(cdr script
)))
207 (defun write-method-body (method-body &optional
(*standard-output
* *standard-output
*))
208 (write-u30 (avm2-asm::method-id method-body
))
209 (write-u30 (avm2-asm::max-stack method-body
))
210 (write-u30 (1+ (avm2-asm::local-count method-body
)))
211 (write-u30 (avm2-asm::init-scope-depth method-body
))
212 (write-u30 (avm2-asm::max-scope-depth method-body
))
213 (write-counted-sequence 'write-u8
(avm2-asm::code method-body
))
214 (write-counted-sequence 'write-generic
(avm2-asm::exceptions method-body
))
215 (write-counted-sequence 'write-generic
(avm2-asm::traits method-body
)))
217 (defmethod write-generic ((ei avm2-asm
::exception-info
) &optional
(*standard-output
* *standard-output
*))
218 (write-u30 (avm2-asm::from ei
))
219 (write-u30 (avm2-asm::to ei
))
220 (write-u30 (avm2-asm::target ei
))
221 (write-u30 (avm2-asm::exc-type ei
))
222 (write-u30 (avm2-asm::var-name ei
)))
226 (defun write-abc-file (&optional
(data avm2-asm
::*assembler-context
*) (*standard-output
* *standard-output
*))
228 ((ints avm2-asm
::ints
) (uints avm2-asm
::uints
) (doubles avm2-asm
::doubles
)
229 (strings avm2-asm
::strings
) (namespaces avm2-asm
::namespaces
)
230 (ns-sets avm2-asm
::ns-sets
) (multinames avm2-asm
::multinames
)
231 (method-infos avm2-asm
::method-infos
) (metadata avm2-asm
::metadata
)
232 (classes avm2-asm
::classes
) (instances avm2-asm
::instances
)
233 (scripts avm2-asm
::scripts
) (method-bodies avm2-asm
::method-bodies
))
236 (write-u16 16) ;minor version
237 (write-u16 46) ;major version
239 (write-counted-sequence 'write-s32 ints
:start
1)
240 (write-counted-sequence 'write-u32 uints
:start
1)
241 (write-counted-sequence 'write-double doubles
:start
1)
242 (write-counted-sequence 'write-string-info strings
:start
1)
243 (write-counted-sequence 'write-namespace namespaces
:start
1)
244 (write-counted-sequence 'write-namespace-set ns-sets
:start
1)
245 (write-counted-sequence 'write-multiname multinames
:start
1)
247 (write-counted-sequence 'write-method-info method-infos
)
248 (write-counted-sequence 'write-metadata-info metadata
)
249 (write-counted-sequence 'write-instance instances
)
250 ;; classes and instances share the same length field
251 (map 'nil
'write-class classes
)
252 (write-counted-sequence 'write-script scripts
)
253 (write-counted-sequence 'write-method-body method-bodies
)))
255 (defun write-as3-tag (as3 tag-name
&optional
(*standard-output
* *standard-output
*))
256 ;; always use the long form for size for now...
257 (let ((size-pos (file-position *standard-output
*)) start
)
258 ;; (write-u16 (logior (ash #x48 6) 63)) ;; was #x48, (x52?)
260 (write-u16 (logior (ash #x52
6) 63))
261 (setf size-pos
(file-position *standard-output
*))
262 (write-u32-raw 0) ;; size, to be filled in later
263 (setf start
(file-position *standard-output
*))
264 ;; flags 1 = lazy initialize
265 (write-sequence '(01 00 00 00) *standard-output
*)
267 (write-0-terminated-string tag-name
*standard-output
*)
268 ;; write the abc data
270 ;; fill in the tag size
271 (let* ((here (file-position *standard-output
*))
272 (length (- here start
)))
273 (file-position *standard-output
* size-pos
)
274 (write-u32-raw (+ length
))
275 (file-position *standard-output
* here
))))
277 (defmacro write-tag
((tag stream
) &body body
)
278 ;; fixme: handle short tags more efficiently
279 (let ((start (gensym))
281 `(let ((,start
(file-position ,stream
)))
282 (write-u16 (logior (ash ,tag
6) 63) ,stream
)
283 (setf ,start
(file-position ,stream
))
284 (write-u32-raw 0 ,stream
) ;; size, to be filled in later
286 ;; fill in the tag size
287 (let* ((,end
(file-position ,stream
)))
288 (file-position ,stream
,start
)
289 (write-u32-raw (- ,end
,start
4) ,stream
)
290 (file-position ,stream
,end
)))))
293 (defun write-swf (stream frame-label symbol-classes
)
294 ;;; write out a minimal .swf, based on the stuff hxasm writes
295 (write-sequence '(#x46
#x57
#x53
#x09
) stream
) ;;magic "FWS9"
296 ;; (write-u32-raw (+ #x17 6 (length as3) (if (>= (length as3) 63) 6 2)) stream)
297 ;; file length (filled in later)
298 (write-u32-raw 0 stream
)
299 ;; 8000x6000 twips = 400x300 pels
300 (write-sequence '(#x78
#x00
#x03
#xe8
#x00
#x00
#x0b
#xb8
#x00
) stream
)
301 (write-u16 #x1e00 stream
) ;; 30fps
302 (write-u16 #x0001 stream
) ;; 1 frame
304 ;; FileAttributes tag
305 (write-u16 (logior (ash #x45
6) 4) stream
) ;; type=69 + length=4
306 (write-u8 #b00011001 stream
) ;; flags: reserved=000, HasMetadata=1,AS3=1,res=00, UseNetwork=1
307 (write-u8 0 stream
) ;;reserved
308 (write-u8 0 stream
) ;;reserved
309 (write-u8 0 stream
) ;;reserved
311 ;; Script Limits tag type=65, length = 4
312 (write-sequence '(#x44
#x10
#xe8
#x03
#x3c
#x00
) stream
) ;; script limits? stack 1000, time 60
314 ;; SetBackgroundColor tag type=9, length=3 color=#x869ca7
315 (write-sequence '(#x43
#x02
#x86
#x9c
#xa7
) stream
) ;; bg color?
316 ;; FrameLabel tag type=43, length=4
317 ;; (write-sequence '(#xc4 #x0a #x66 #x6f #x6f 00) stream) ;; frame label
318 (write-tag (43 stream
)
319 (write-0-terminated-string frame-label stream
))
322 (write-as3-tag avm2-asm
::*assembler-context
* "frame" stream
)
323 ;; SymbolClass tag, tag=76 length=8
324 ;;(write-u16 #x1308 stream) ;;tag+length
325 ;; NumSymbols=#x0001 Tag[1] = #x0000 Name[1]="foo"#x0
326 ;; (write-sequence '(#x01 00 00 00 #x66 #x6f #x6f 00) stream)
327 (write-tag (76 stream
)
328 (write-u16 (length symbol-classes
) stream
) ;; # of symbols
329 (loop for i in symbol-classes
331 (write-u16 (first i
) stream
) ;; tag
332 (write-0-terminated-string (second i
) stream
))) ;; name
334 ;; ShowFrame tag type=1, length=0
335 (write-u16 (logior (ash #x01
6) 0) stream
) ;; show frame tag
336 ;; End tag type=1, length=0
337 (write-u16 (logior (ash #x00
6) 0) stream
) ;; end tag
338 ;; fill in the file size
339 (file-position stream
4)
340 (write-u32-raw (file-length stream
) stream
)
344 ;;; fixme: deal with package stuff, possibly reorganize stuff between asm/compiler...
346 (defun super-names (name)
347 (let ((s (assoc name
*flash-player-classes
* :test
'string
=)))
349 (cons (second s
) (super-names (second s
)))
352 (defun push-lex-scope (mn-index)
353 `((:get-lex
,(if (integerp mn-index
) `(:id
,mn-index
)mn-index
))
356 (defun new-class+scopes
(class-id)
357 ;; fixme: allow class lookup instead of using class-id directly?
358 #+nil
(format t
"cid = ~a classes=~s~%" class-id
(avm2-asm::classes avm2-asm
::*assembler-context
*))
359 #+nil
(format t
" instances = ~s~%" (avm2-asm::instances avm2-asm
::*assembler-context
*))
360 (let* ((class (aref (avm2-asm::classes avm2-asm
::*assembler-context
*) class-id
))
361 (inst (aref (avm2-asm::instances avm2-asm
::*assembler-context
*) class-id
)))
362 (declare (ignorable class
))
363 (destructuring-bind (name-mn super-mn flags interfaces instance-init traits protected-ns
)
365 (declare (ignorable name-mn super-mn flags interfaces instance-init traits protected-ns
))
366 #+nil
(format t
"cid = ~a name-mn = ~a=~a super-mn = ~a=~a ~%"
367 class-id name-mn
(avm2-asm::qname-string name-mn
)
368 super-mn
(avm2-asm::qname-string super-mn
))
369 ;;(format t " supers = ~s~%" (reverse (super-names (avm2-asm::qname-string super-mn))))
370 (let ((supers (reverse (super-names (avm2-asm::qname-string super-mn
)))))
371 `((:get-scope-object
0)
372 ,@(loop for i in supers
373 append
(push-lex-scope i
))
374 ,@(push-lex-scope super-mn
)
375 (:get-lex
(:id
,super-mn
))
376 (:new-class
,class-id
)
377 ,@(loop repeat
(1+ (length supers
))
378 collect
`(:pop-scope
))
379 (:init-property
(:id
,name-mn
)))))))
382 (defun assemble-function (name)
383 #+nil
(format t
"--assemble-function ~s :~%" name
)
384 (destructuring-bind (n nid argtypes return-type flags asm
)
385 (find-swf-function name
)
386 (let ((mid (avm2-asm::avm2-method nid argtypes return-type flags
387 :body
(avm2-asm::assemble-method-body asm
))))
388 (push (list n mid
) (function-names *compiler-context
*)))))
390 (defun assemble-class (name ns super properties constructor
)
391 (let* ((constructor-mid (avm2-asm::avm2-method
393 (loop for i in
(first constructor
)
394 collect
0) ;; constructor arg types
397 (avm2-asm::assemble-method-body
398 (%compile-defun
(first constructor
)
399 (second constructor
) t t
))))
400 ;; fixme: probably should make this configurable at some point
401 (class-init (avm2-asm::avm2-method
0 nil
0 0 ;; meta-class init
403 (avm2-asm::assemble-method-body
408 (junk (avm2-asm::avm2-ns-intern ns
))
409 (class (avm2-asm::avm2-class
410 (avm2-asm::asm-intern-multiname name
)
411 (avm2-asm::asm-intern-multiname
412 (or (car (find-swf-class super
))
414 ;; todo: add interfaces
415 09 nil
;; flags, interfaces
417 (loop for i in properties
420 'avm2-asm
::trait-info
421 'avm2-asm
::name
(avm2-asm::asm-intern-multiname i
)
422 'avm2-asm
::trait-data
423 (make-instance 'avm2-asm
::trait-data-slot
/const
425 'avm2-asm
::slot-id
0 ;; auto-assign
426 'avm2-asm
::type-name
0 ;; */t
427 'avm2-asm
::vindex
0 ;; no value
428 'avm2-asm
::vkind
0 ;; no value
432 ;; todo: class traits
435 (push (list name class
) (class-names *compiler-context
*))))
437 (defparameter *break-compile
* nil
)
438 ;;(setf *break-compile* t)
439 ;;; quick hack for testing, need to write a proper API at some point, which
440 ;;; compiles functions from a list of packages or whatever
441 (defmacro with-compilation-to-stream
(s (frame-name exports
) &body body
)
442 (let ((script-init (gensym))
445 `(let ((avm2-asm::*assembler-context
* (make-instance 'avm2-asm
::assembler-context
))
446 (*compiler-context
* (make-instance 'compiler-context
))
447 (*symbol-table
* (make-instance 'symbol-table
:inherit
(list *cl-symbol-table
*))))
448 ;; fixme: add these to assembler-context constructor or something
449 (avm2-asm::avm2-intern
"")
450 (avm2-asm::avm2-ns-intern
"")
451 #+nil
(format t
"==-== body~%")
452 ;; compile the body code
454 #+nil
(format t
"==-== classes~%")
456 (loop for k being the hash-keys of
(classes *cl-symbol-table
*)
458 for
(swf-name ns super properties constructor
) = v
459 when
(or properties constructor
)
460 do
(assemble-class swf-name ns super properties constructor
))
461 (loop for k being the hash-keys of
(classes *symbol-table
*)
463 for
(swf-name ns super properties constructor
) = v
464 when
(or properties constructor
)
465 do
(assemble-class swf-name ns super properties constructor
))
466 #+nil
(format t
"==-== functions~%")
467 ;; assemble functions
468 (loop for k being the hash-keys of
(functions *cl-symbol-table
*)
469 do
(assemble-function k
))
470 (loop for k being the hash-keys of
(functions *symbol-table
*)
471 do
(assemble-function k
))
472 #+nil
(format t
"==-== boilerplate~%")
473 ;; script boilerplate
475 (avm2-asm::avm2-method
478 (avm2-asm::assemble-method-body
481 ,@(loop for
,i below
(length (avm2-asm::classes avm2-asm
::*assembler-context
*))
482 append
(new-class+scopes
,i
))
484 #+nil
(format t
"==-== boilerplate2~%")
487 ,@(loop for i in
(class-names *compiler-context
*)
488 ;;do (format t "-=c-~s~%" i)
489 collect
(make-instance 'avm2-asm
::trait-info
491 (avm2-asm::asm-intern-multiname
(first i
))
492 'avm2-asm
::trait-data
493 (make-instance 'avm2-asm
::trait-data-class
495 'avm2-asm
::classi
(second i
))))
496 ,@(loop for i in
(function-names *compiler-context
*)
497 ;;do (format t "-=f-~s~%" i)
498 collect
(make-instance 'avm2-asm
::trait-info
500 (if (numberp (first i
))
502 (avm2-asm::asm-intern-multiname
(first i
)))
503 'avm2-asm
::trait-data
(make-instance 'avm2-asm
::trait-data-method
/get
/set
505 'avm2-asm
::method
(second i
)))))
506 (avm2-asm::scripts avm2-asm
::*assembler-context
*)))
508 (when *break-compile
* (break))
509 #+nil
(format t
"==-== write~%")
510 ;; write out the .swf
511 (write-swf ,s
,frame-name
,exports
))))