lib/as3/abc.c

   1 /* abc.c
   2
   3    Routines for handling Flash2 AVM2 ABC Actionscript
   4
   5    Extension module for the rfxswf library.
   6    Part of the swftools package.
   7
   8    Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  23
  24 #include <stdarg.h>
  25 #include <assert.h>
  26 #include "../rfxswf.h"
  27 #include "../q.h"
  28 #include "abc.h"
  29
  30 char stringbuffer[2048];
  31
  32 int abc_RegisterNameSpace(abc_file_t*file, const char*name);
  33 int abc_RegisterPackageNameSpace(abc_file_t*file, const char*name);
  34 int abc_RegisterPackageInternalNameSpace(abc_file_t*file, const char*name);
  35 int abc_RegisterProtectedNameSpace(abc_file_t*file, const char*name);
  36 int abc_RegisterExplicitNameSpace(abc_file_t*file, const char*name);
  37 int abc_RegisterStaticProtectedNameSpace(abc_file_t*file, const char*name);
  38 int abc_RegisterPrivateNameSpace(abc_file_t*file, const char*name);
  39
  40 /* TODO: switch to a datastructure with just values */
  41 #define NO_KEY ""
  42
  43 static char* params_tostring(multiname_list_t*list)
  44 {
  45     multiname_list_t*l;
  46     int n = list_length(list);
  47     char**names = (char**)malloc(sizeof(char*)*n);
  48
  49     l = list;
  50     n = 0;
  51     int size = 0;
  52     while(l) {
  53         names[n] = multiname_tostring(l->multiname);
  54         size += strlen(names[n]) + 2;
  55         n++;l=l->next;
  56     }
  57
  58     char* params = malloc(size+15);
  59     params[0]='(';
  60     params[1]=0;
  61     l = list;
  62     int s=0;
  63     n = 0;
  64     while(l) {
  65         if(s)
  66             strcat(params, ", ");
  67         strcat(params, names[n]);
  68         free(names[n]);
  69         l = l->next;
  70         n++;
  71         s=1;
  72     }
  73     free(names);
  74     /*char num[20];
  75     sprintf(num, "[%d params]", n);
  76     strcat(params, num);*/
  77     strcat(params, ")");
  78     int t;
  79     return params;
  80 }
  81
  82 //#define DEBUG
  83 #define DEBUG if(0)
  84
  85 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
  86 {
  87     int t;
  88     int num_metadata = swf_GetU30(tag);
  89
  90     DEBUG printf("%d metadata\n");
  91     for(t=0;t<num_metadata;t++) {
  92         const char*entry_name = pool_lookup_string(pool, swf_GetU30(tag));
  93         int num = swf_GetU30(tag);
  94         int s;
  95         DEBUG printf("  %s\n", entry_name);
  96         array_t*items = array_new();
  97         for(s=0;s<num;s++) {
  98             int i1 = swf_GetU30(tag);
  99             int i2 = swf_GetU30(tag);
 100             const char*key = i1?pool_lookup_string(pool, i1):"";
 101             const char*value = i2?pool_lookup_string(pool, i2):"";
 102             DEBUG printf("    %s=%s\n", key, value);
 103             array_append(items, key, strdup(value));
 104         }
 105         array_append(file->metadata, entry_name, items);
 106     }
 107 }
 108
 109 void swf_CopyData(TAG*to, TAG*from, int len)
 110 {
 111     unsigned char*data = malloc(len);
 112     swf_GetBlock(from, data, len);
 113     swf_SetBlock(to, data, len);
 114     free(data);
 115 }
 116
 117 abc_file_t*abc_file_new()
 118 {
 119     abc_file_t*f = malloc(sizeof(abc_file_t));
 120     memset(f, 0, sizeof(abc_file_t));
 121     f->metadata = array_new();
 122
 123     f->methods = array_new();
 124     f->classes = array_new();
 125     f->scripts = array_new();
 126     f->method_bodies = array_new();
 127     f->flags = ABCFILE_LAZY;
 128
 129     return f;
 130 }
 131
 132 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
 133
 134     NEW(abc_class_t,c);
 135     array_append(file->classes, NO_KEY, c);
 136
 137     c->file = file;
 138     c->classname = multiname_clone(classname);
 139     c->superclass = multiname_clone(superclass);
 140     c->flags = 0;
 141     c->constructor = 0;
 142     c->static_constructor = 0;
 143     c->traits = list_new();
 144     return c;
 145 }
 146 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 147 {
 148     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 149 }
 150
 151 void abc_class_sealed(abc_class_t*c)
 152 {
 153     c->flags |= CLASS_SEALED;
 154 }
 155 void abc_class_final(abc_class_t*c)
 156 {
 157     c->flags |= CLASS_FINAL;
 158 }
 159 void abc_class_interface(abc_class_t*c)
 160 {
 161     c->flags |= CLASS_INTERFACE;
 162 }
 163 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 164 {
 165     c->protectedNS = namespace_new_protected(namespace);
 166     c->flags |= CLASS_PROTECTED_NS;
 167 }
 168 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 169 {
 170     list_append(c->interfaces, multiname_clone(interface));
 171 }
 172
 173 static abc_method_t* add_method(abc_file_t*file, abc_class_t*cls, multiname_t*returntype, char body)
 174 {
 175     /* construct method object */
 176     NEW(abc_method_t,m);
 177     m->index = array_length(file->methods);
 178     array_append(file->methods, NO_KEY, m);
 179     m->return_type = returntype;
 180
 181     if(body) {
 182         /* construct code (method body) object */
 183         NEW(abc_method_body_t,c);
 184         array_append(file->method_bodies, NO_KEY, c);
 185         c->index = array_length(file->method_bodies);
 186         c->file = file;
 187         c->traits = list_new();
 188         c->code = 0;
 189
 190         /* crosslink the two objects */
 191         m->body = c;
 192         c->method = m;
 193     }
 194
 195     return m;
 196 }
 197
 198 abc_method_t* abc_class_constructor(abc_class_t*cls, multiname_t*returntype)
 199 {
 200     abc_method_t* m = add_method(cls->file, cls, returntype, 1);
 201     cls->constructor = m;
 202     return m;
 203 }
 204
 205 abc_method_t* abc_class_staticconstructor(abc_class_t*cls, multiname_t*returntype)
 206 {
 207     abc_method_t* m = add_method(cls->file, cls, returntype, 1);
 208     cls->static_constructor = m;
 209     return m;
 210 }
 211
 212 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 213 {
 214     trait_t*trait = malloc(sizeof(trait_t));
 215     memset(trait, 0, sizeof(trait_t));
 216     trait->kind = type&0x0f;
 217     trait->attributes = type&0xf0;
 218     trait->name = name;
 219     trait->data1 = data1;
 220     trait->data2 = data2;
 221     trait->value = v;
 222     return trait;
 223 }
 224 trait_t*trait_new_member(multiname_t*type, multiname_t*name,constant_t*v)
 225 {
 226     int kind = TRAIT_SLOT;
 227     trait_t*trait = malloc(sizeof(trait_t));
 228     memset(trait, 0, sizeof(trait_t));
 229     trait->kind = kind&0x0f;
 230     trait->attributes = kind&0xf0;
 231     trait->name = name;
 232     trait->type_name = type;
 233     return trait;
 234 }
 235 trait_t*trait_new_method(multiname_t*name, abc_method_t*m)
 236 {
 237     int type = TRAIT_METHOD;
 238     trait_t*trait = malloc(sizeof(trait_t));
 239     memset(trait, 0, sizeof(trait_t));
 240     trait->kind = type&0x0f;
 241     trait->attributes = type&0xf0;
 242     trait->name = name;
 243     trait->method = m;
 244     return trait;
 245 }
 246
 247 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 248 {
 249     abc_file_t*file = cls->file;
 250     abc_method_t* m = add_method(cls->file, cls, returntype, !(cls->flags&CLASS_INTERFACE));
 251     m->trait = trait_new_method(multiname_clone(name), m);
 252     /* start assigning traits at position #1.
 253        Weird things happen when assigning slot 0- slot 0 and 1 seem
 254        to be identical */
 255     m->trait->slot_id = list_length(cls->traits)+1;
 256     list_append(cls->traits, m->trait);
 257     return m;
 258 }
 259 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 260 {
 261     abc_file_t*file = cls->file;
 262     abc_method_t* m = add_method(cls->file, cls, returntype, !(cls->flags&CLASS_INTERFACE));
 263     m->trait = trait_new_method(multiname_clone(name), m);
 264     m->trait->slot_id = list_length(cls->static_traits)+1;
 265     list_append(cls->static_traits, m->trait);
 266     return m;
 267 }
 268
 269 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 270 {
 271     abc_file_t*file = cls->file;
 272     multiname_t*m_name = multiname_clone(name);
 273     multiname_t*m_type = multiname_clone(type);
 274     trait_t*t = trait_new_member(m_type, m_name, 0);
 275     t->slot_id = list_length(cls->traits)+1;
 276     list_append(cls->traits, t);
 277     return t;
 278 }
 279 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 280 {
 281     abc_file_t*file = cls->file;
 282     multiname_t*m_name = multiname_clone(name);
 283     multiname_t*m_type = multiname_clone(type);
 284     trait_t*t = trait_new_member(m_type, m_name, 0);
 285     t->slot_id = list_length(cls->static_traits)+1;
 286     list_append(cls->static_traits, t);
 287     return t;
 288 }
 289
 290
 291 trait_t* abc_class_find_slotid(abc_class_t*cls, int slotid)
 292 {
 293     trait_list_t*l;
 294     trait_t*t=0;
 295     for(l=cls->traits;l;l=l->next) {
 296         if(l->trait->slot_id==slotid) {
 297             t=l->trait;
 298             break;
 299         }
 300     }
 301     return t;
 302 }
 303
 304 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 305 {
 306     abc_file_t*file = code->file;
 307     multiname_t*m = multiname_fromstring(multiname);
 308     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 309     trait->cls = cls;
 310     list_append(code->traits, trait);
 311 }
 312
 313 /* notice: traits of a method (body) belonging to an init script
 314    and traits of the init script are *not* the same thing */
 315 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 316 {
 317     abc_file_t*file = script->file;
 318     multiname_t*m = multiname_clone(multiname);
 319     int slotid = list_length(script->traits)+1;
 320     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 321     trait->cls = cls;
 322     list_append(script->traits, trait);
 323     return slotid;
 324 }
 325
 326 abc_script_t* abc_initscript(abc_file_t*file, multiname_t*returntype)
 327 {
 328     abc_method_t*m = add_method(file, 0, returntype, 1);
 329     abc_script_t* s = malloc(sizeof(abc_script_t));
 330     s->method = m;
 331     s->traits = list_new();
 332     s->file = file;
 333     array_append(file->scripts, NO_KEY, s);
 334     return s;
 335 }
 336
 337 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file);
 338
 339 static void dump_method(FILE*fo, const char*prefix, const char*type, const char*name, abc_method_t*m, abc_file_t*file)
 340 {
 341     char*return_type = 0;
 342     if(m->return_type)
 343         return_type = multiname_tostring(m->return_type);
 344     else
 345         return_type = strdup("void");
 346     char*paramstr = params_tostring(m->parameters);
 347     fprintf(fo, "%s%s %s %s=%s %s (%d params, %d optional)\n", prefix, type, return_type, name, m->name, paramstr,
 348             list_length(m->parameters),
 349             list_length(m->optional_parameters)
 350             );
 351     free(paramstr);paramstr=0;
 352     free(return_type);return_type=0;
 353
 354     abc_method_body_t*c = m->body;
 355     if(!c) {
 356         return;
 357     }
 358
 359     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 360             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 361             c->old.max_scope_depth);
 362
 363
 364     int flags = c->method->flags;
 365     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 366     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 367     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 368     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 369     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 370     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 371     if(flags) fprintf(fo, " %02x", flags);
 372     fprintf(fo, "]");
 373
 374     if(m->trait) {
 375         fprintf(fo, " slot:%d", m->trait->slot_id);
 376     }
 377     fprintf(fo, "\n");
 378
 379
 380     char prefix2[80];
 381     sprintf(prefix2, "%s    ", prefix);
 382     if(c->traits)
 383         traits_dump(fo, prefix, c->traits, file);
 384     fprintf(fo, "%s{\n", prefix);
 385     code_dump(c->code, c->exceptions, file, prefix2, fo);
 386     fprintf(fo, "%s}\n\n", prefix);
 387 }
 388
 389 static void traits_free(trait_list_t*traits)
 390 {
 391     trait_list_t*t = traits;
 392     while(t) {
 393         if(t->trait->name) {
 394             multiname_destroy(t->trait->name);t->trait->name = 0;
 395         }
 396         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 397             multiname_destroy(t->trait->type_name);
 398         }
 399         if(t->trait->value) {
 400             constant_free(t->trait->value);t->trait->value = 0;
 401         }
 402         free(t->trait);t->trait = 0;
 403         t = t->next;
 404     }
 405     list_free(traits);
 406 }
 407
 408 static char trait_is_method(trait_t*trait)
 409 {
 410     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 411             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 412 }
 413
 414 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 415 {
 416     int num_traits = swf_GetU30(tag);
 417     trait_list_t*traits = list_new();
 418     int t;
 419     if(num_traits) {
 420         DEBUG printf("%d traits\n", num_traits);
 421     }
 422
 423     for(t=0;t<num_traits;t++) {
 424         NEW(trait_t,trait);
 425         list_append(traits, trait);
 426
 427         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 428
 429         const char*name = 0;
 430         DEBUG name = multiname_tostring(trait->name);
 431         U8 kind = swf_GetU8(tag);
 432         U8 attributes = kind&0xf0;
 433         kind&=0x0f;
 434         trait->kind = kind;
 435         trait->attributes = attributes;
 436         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 437         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 438             trait->disp_id = swf_GetU30(tag);
 439             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 440             trait->method->trait = trait;
 441             DEBUG printf("  method/getter/setter\n");
 442         } else if(kind == TRAIT_FUNCTION) { // function
 443             trait->slot_id =  swf_GetU30(tag);
 444             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 445             trait->method->trait = trait;
 446         } else if(kind == TRAIT_CLASS) { // class
 447             trait->slot_id = swf_GetU30(tag);
 448             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 449             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 450         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 451             /* a slot is a variable in a class that is shared amonst all instances
 452                of the same type, but which has a unique location in each object
 453                (in other words, slots are non-static, traits are static)
 454              */
 455             trait->slot_id = swf_GetU30(tag);
 456             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 457             int vindex = swf_GetU30(tag);
 458             if(vindex) {
 459                 int vkind = swf_GetU8(tag);
 460                 trait->value = constant_fromindex(pool, vindex, vkind);
 461             }
 462             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 463         } else {
 464             fprintf(stderr, "Can't parse trait type %d\n", kind);
 465         }
 466         if(attributes&0x40) {
 467             int num = swf_GetU30(tag);
 468             int s;
 469             for(s=0;s<num;s++) {
 470                 swf_GetU30(tag); //index into metadata array
 471             }
 472         }
 473     }
 474     return traits;
 475 }
 476
 477 void traits_skip(TAG*tag)
 478 {
 479     int num_traits = swf_GetU30(tag);
 480     int t;
 481     for(t=0;t<num_traits;t++) {
 482         swf_GetU30(tag);
 483         U8 kind = swf_GetU8(tag);
 484         U8 attributes = kind&0xf0;
 485         kind&=0x0f;
 486         swf_GetU30(tag);
 487         swf_GetU30(tag);
 488         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 489             if(swf_GetU30(tag)) swf_GetU8(tag);
 490         } else if(kind>TRAIT_CONST) {
 491             fprintf(stderr, "Can't parse trait type %d\n", kind);
 492         }
 493         if(attributes&0x40) {
 494             int s, num = swf_GetU30(tag);
 495             for(s=0;s<num;s++) swf_GetU30(tag);
 496         }
 497     }
 498 }
 499
 500
 501 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 502 {
 503     if(!traits) {
 504         swf_SetU30(tag, 0);
 505         return;
 506     }
 507     swf_SetU30(tag, list_length(traits));
 508     int s;
 509
 510     while(traits) {
 511         trait_t*trait = traits->trait;
 512
 513         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 514         swf_SetU8(tag, trait->kind|trait->attributes);
 515
 516         swf_SetU30(tag, trait->data1);
 517
 518         if(trait->kind == TRAIT_CLASS) {
 519             swf_SetU30(tag, trait->cls->index);
 520         } else if(trait->kind == TRAIT_GETTER ||
 521                   trait->kind == TRAIT_SETTER ||
 522                   trait->kind == TRAIT_METHOD) {
 523             swf_SetU30(tag, trait->method->index);
 524         } else if(trait->kind == TRAIT_SLOT ||
 525                   trait->kind == TRAIT_CONST) {
 526             int index = pool_register_multiname(pool, trait->type_name);
 527             swf_SetU30(tag, index);
 528         } else  {
 529             swf_SetU30(tag, trait->data2);
 530         }
 531
 532         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 533             int vindex = constant_get_index(pool, trait->value);
 534             swf_SetU30(tag, vindex);
 535             if(vindex) {
 536                 swf_SetU8(tag, trait->value->type);
 537             }
 538         }
 539         if(trait->attributes&0x40) {
 540             // metadata
 541             swf_SetU30(tag, 0);
 542         }
 543         traits = traits->next;
 544     }
 545 }
 546
 547
 548 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file)
 549 {
 550     int t;
 551     while(traits) {
 552         trait_t*trait = traits->trait;
 553         char*name = multiname_tostring(trait->name);
 554         U8 kind = trait->kind;
 555         U8 attributes = trait->attributes;
 556         if(kind == TRAIT_METHOD) {
 557             abc_method_t*m = trait->method;
 558             dump_method(fo, prefix, "method", name, m, file);
 559         } else if(kind == TRAIT_GETTER) {
 560             abc_method_t*m = trait->method;
 561             dump_method(fo, prefix, "getter", name, m, file);
 562         } else if(kind == TRAIT_SETTER) {
 563             abc_method_t*m = trait->method;
 564             dump_method(fo, prefix, "setter", name, m, file);
 565         } else if(kind == TRAIT_FUNCTION) { // function
 566             abc_method_t*m = trait->method;
 567             dump_method(fo, prefix, "function", name, m, file);
 568         } else if(kind == TRAIT_CLASS) { // class
 569             abc_class_t*cls = trait->cls;
 570             if(!cls) {
 571                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 572             } else {
 573                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 574             }
 575         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 576             int slot_id = trait->slot_id;
 577             char*type_name = multiname_tostring(trait->type_name);
 578             char*value = constant_tostring(trait->value);
 579             fprintf(fo, "%sslot %d: %s%s %s %s %s\n", prefix, trait->slot_id,
 580                     kind==TRAIT_CONST?"const ":"", type_name, name,
 581                     value?"=":"", value);
 582             if(value) free(value);
 583             free(type_name);
 584         } else {
 585             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 586         }
 587         free(name);
 588         traits=traits->next;
 589     }
 590 }
 591
 592 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 593 {
 594     abc_file_t* file = (abc_file_t*)code;
 595
 596     if(file->name) {
 597         fprintf(fo, "%s#\n", prefix);
 598         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 599         fprintf(fo, "%s#\n", prefix);
 600     }
 601
 602     int t;
 603     for(t=0;t<file->metadata->num;t++) {
 604         const char*entry_name = array_getkey(file->metadata, t);
 605         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 606         int s;
 607         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 608         for(s=0;s<items->num;s++) {
 609             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 610         }
 611         fprintf(fo, "%s#\n", prefix);
 612     }
 613
 614     for(t=0;t<file->classes->num;t++) {
 615         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 616         char prefix2[80];
 617         sprintf(prefix2, "%s    ", prefix);
 618
 619         fprintf(fo, "%s", prefix);
 620         if(cls->flags&1) fprintf(fo, "sealed ");
 621         if(cls->flags&2) fprintf(fo, "final ");
 622         if(cls->flags&4) fprintf(fo, "interface ");
 623         if(cls->flags&8) {
 624             char*s = namespace_tostring(cls->protectedNS);
 625             fprintf(fo, "protectedNS(%s) ", s);
 626             free(s);
 627         }
 628
 629         char*classname = multiname_tostring(cls->classname);
 630         fprintf(fo, "class %s", classname);
 631         free(classname);
 632         if(cls->superclass) {
 633             char*supername = multiname_tostring(cls->superclass);
 634             fprintf(fo, " extends %s", supername);
 635             free(supername);
 636             multiname_list_t*ilist = cls->interfaces;
 637             if(ilist)
 638                 fprintf(fo, " implements");
 639             while(ilist) {
 640                 char*s = multiname_tostring(ilist->multiname);
 641                 fprintf(fo, " %s", s);
 642                 free(s);
 643                 ilist = ilist->next;
 644             }
 645             ilist->next;
 646         }
 647         if(cls->flags&0xf0)
 648             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 649         fprintf(fo, "%s{\n", prefix);
 650
 651         if(cls->static_constructor)
 652             dump_method(fo, prefix2,"staticconstructor", "", cls->static_constructor, file);
 653         traits_dump(fo, prefix2, cls->static_traits, file);
 654
 655         char*n = multiname_tostring(cls->classname);
 656         if(cls->constructor)
 657             dump_method(fo, prefix2, "constructor", n, cls->constructor, file);
 658         free(n);
 659         traits_dump(fo, prefix2,cls->traits, file);
 660         fprintf(fo, "%s}\n", prefix);
 661
 662     }
 663     fprintf(fo, "%s\n", prefix);
 664
 665     for(t=0;t<file->scripts->num;t++) {
 666         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 667         dump_method(fo, prefix,"initmethod", "init", s->method, file);
 668         traits_dump(fo, prefix, s->traits, file);
 669     }
 670     return file;
 671 }
 672
 673 void* swf_ReadABC(TAG*tag)
 674 {
 675     abc_file_t* file = abc_file_new();
 676     pool_t*pool = pool_new();
 677
 678     swf_SetTagPos(tag, 0);
 679     int t;
 680     if(tag->id == ST_DOABC) {
 681         U32 abcflags = swf_GetU32(tag);
 682         DEBUG printf("flags=%08x\n", abcflags);
 683         char*name= swf_GetString(tag);
 684         file->name = (name&&name[0])?strdup(name):0;
 685     }
 686     U32 version = swf_GetU32(tag);
 687     if(version!=0x002e0010) {
 688         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 689     }
 690
 691     pool_read(pool, tag);
 692
 693     int num_methods = swf_GetU30(tag);
 694     DEBUG printf("%d methods\n", num_methods);
 695     for(t=0;t<num_methods;t++) {
 696         NEW(abc_method_t,m);
 697         int param_count = swf_GetU30(tag);
 698         int return_type_index = swf_GetU30(tag);
 699         if(return_type_index)
 700             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 701         else
 702             m->return_type = 0;
 703
 704         int s;
 705         for(s=0;s<param_count;s++) {
 706             int type_index = swf_GetU30(tag);
 707
 708             /* type_index might be 0, which probably means "..." (varargs) */
 709             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 710             list_append(m->parameters, param);
 711         }
 712
 713         int namenr = swf_GetU30(tag);
 714         if(namenr)
 715             m->name = strdup(pool_lookup_string(pool, namenr));
 716         else
 717             m->name = strdup("");
 718
 719         m->flags = swf_GetU8(tag);
 720
 721         DEBUG printf("method %d) %s %s flags=%02x\n", t, m->name, params_tostring(m->parameters), m->flags);
 722
 723         if(m->flags&0x08) {
 724             m->optional_parameters = list_new();
 725             int num = swf_GetU30(tag);
 726             int s;
 727             for(s=0;s<num;s++) {
 728                 int vindex = swf_GetU30(tag);
 729                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 730                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 731                 list_append(m->optional_parameters, c);
 732             }
 733         }
 734         if(m->flags&0x80) {
 735             /* debug information- not used by avm2 */
 736             multiname_list_t*l = m->parameters;
 737             while(l) {
 738                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 739                 l = l->next;
 740             }
 741         }
 742         m->index = array_length(file->methods);
 743         array_append(file->methods, NO_KEY, m);
 744     }
 745
 746     parse_metadata(tag, file, pool);
 747
 748     /* skip classes, and scripts for now, and do the real parsing later */
 749     int num_classes = swf_GetU30(tag);
 750     int classes_pos = tag->pos;
 751     DEBUG printf("%d classes\n", num_classes);
 752     for(t=0;t<num_classes;t++) {
 753         abc_class_t*cls = malloc(sizeof(abc_class_t));
 754         memset(cls, 0, sizeof(abc_class_t));
 755
 756         swf_GetU30(tag); //classname
 757         swf_GetU30(tag); //supername
 758
 759         array_append(file->classes, NO_KEY, cls);
 760
 761         cls->flags = swf_GetU8(tag);
 762         DEBUG printf("class %d %02x\n", t, cls->flags);
 763         if(cls->flags&8)
 764             swf_GetU30(tag); //protectedNS
 765         int s;
 766         int inum = swf_GetU30(tag); //interface count
 767         cls->interfaces = 0;
 768         for(s=0;s<inum;s++) {
 769             int interface_index = swf_GetU30(tag);
 770             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 771             list_append(cls->interfaces, m);
 772             DEBUG printf("  class %d interface: %s\n", t, m->name);
 773         }
 774
 775         int iinit = swf_GetU30(tag); //iinit
 776         DEBUG printf("--iinit-->%d\n", iinit);
 777         traits_skip(tag);
 778     }
 779     for(t=0;t<num_classes;t++) {
 780         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 781         int cinit = swf_GetU30(tag);
 782         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 783         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 784         traits_skip(tag);
 785     }
 786     int num_scripts = swf_GetU30(tag);
 787     DEBUG printf("%d scripts\n", num_scripts);
 788     for(t=0;t<num_scripts;t++) {
 789         int init = swf_GetU30(tag);
 790         traits_skip(tag);
 791     }
 792
 793     int num_method_bodies = swf_GetU30(tag);
 794     DEBUG printf("%d method bodies\n", num_method_bodies);
 795     for(t=0;t<num_method_bodies;t++) {
 796         int methodnr = swf_GetU30(tag);
 797         if(methodnr >= file->methods->num) {
 798             printf("Invalid method number: %d\n", methodnr);
 799             return 0;
 800         }
 801         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 802         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 803         memset(c, 0, sizeof(abc_method_body_t));
 804         c->old.max_stack = swf_GetU30(tag);
 805         c->old.local_count = swf_GetU30(tag);
 806         c->old.init_scope_depth = swf_GetU30(tag);
 807         c->old.max_scope_depth = swf_GetU30(tag);
 808
 809         c->init_scope_depth = c->old.init_scope_depth;
 810         int code_length = swf_GetU30(tag);
 811
 812         c->method = m;
 813         m->body = c;
 814
 815         int pos = tag->pos + code_length;
 816         codelookup_t*codelookup = 0;
 817         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 818         tag->pos = pos;
 819
 820         int exception_count = swf_GetU30(tag);
 821         int s;
 822         c->exceptions = list_new();
 823         for(s=0;s<exception_count;s++) {
 824             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 825
 826             e->from = code_atposition(codelookup, swf_GetU30(tag));
 827             e->to = code_atposition(codelookup, swf_GetU30(tag));
 828             e->target = code_atposition(codelookup, swf_GetU30(tag));
 829
 830             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 831             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 832             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 833             //if(e->var_name) e->var_name = strdup(e->var_name);
 834             list_append(c->exceptions, e);
 835         }
 836         codelookup_free(codelookup);
 837         c->traits = traits_parse(tag, pool, file);
 838
 839         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 840
 841         array_append(file->method_bodies, NO_KEY, c);
 842     }
 843     if(tag->len - tag->pos) {
 844         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 845         return 0;
 846     }
 847
 848     swf_SetTagPos(tag, classes_pos);
 849     for(t=0;t<num_classes;t++) {
 850         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 851
 852         int classname_index = swf_GetU30(tag);
 853         int superclass_index = swf_GetU30(tag);
 854         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 855         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 856         cls->flags = swf_GetU8(tag);
 857         const char*ns = "";
 858         if(cls->flags&8) {
 859             int ns_index = swf_GetU30(tag);
 860             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 861         }
 862
 863         int num_interfaces = swf_GetU30(tag); //interface count
 864         int s;
 865         for(s=0;s<num_interfaces;s++) {
 866             swf_GetU30(tag);
 867         }
 868         int iinit = swf_GetU30(tag);
 869         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 870         cls->traits = traits_parse(tag, pool, file);
 871     }
 872     for(t=0;t<num_classes;t++) {
 873         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 874         /* SKIP */
 875         swf_GetU30(tag); // cindex
 876         cls->static_traits = traits_parse(tag, pool, file);
 877     }
 878     int num_scripts2 = swf_GetU30(tag);
 879     for(t=0;t<num_scripts2;t++) {
 880         int init = swf_GetU30(tag);
 881         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 882
 883         abc_script_t*s = malloc(sizeof(abc_script_t));
 884         memset(s, 0, sizeof(abc_script_t));
 885         s->method = m;
 886         s->traits = traits_parse(tag, pool, file);
 887         array_append(file->scripts, NO_KEY, s);
 888     }
 889
 890     pool_destroy(pool);
 891     return file;
 892 }
 893
 894 void swf_WriteABC(TAG*abctag, void*code)
 895 {
 896     abc_file_t*file = (abc_file_t*)code;
 897     pool_t*pool = pool_new();
 898
 899     TAG*tmp = swf_InsertTag(0,0);
 900     TAG*tag = tmp;
 901     int t;
 902
 903     /* add method bodies where needed */
 904     for(t=0;t<file->classes->num;t++) {
 905         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 906         if(!c->constructor) {
 907             if(!(c->flags&CLASS_INTERFACE)) {
 908                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 909                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 910                 // don't bother to set m->index
 911                 body->method = m; m->body = body;
 912                 __ returnvoid(body);
 913                 c->constructor = m;
 914             } else {
 915                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 916                 c->constructor = m;
 917             }
 918         }
 919         if(!c->static_constructor) {
 920             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 921             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 922             body->method = m; m->body = body;
 923             __ returnvoid(body);
 924             c->static_constructor = m;
 925         }
 926     }
 927
 928
 929     swf_SetU30(tag, file->methods->num);
 930     /* enumerate classes, methods and method bodies */
 931     for(t=0;t<file->methods->num;t++) {
 932         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 933         m->index = t;
 934     }
 935     for(t=0;t<file->classes->num;t++) {
 936         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 937         c->index = t;
 938     }
 939     for(t=0;t<file->method_bodies->num;t++) {
 940         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 941         m->index = t;
 942     }
 943
 944     /* generate code statistics */
 945     for(t=0;t<file->method_bodies->num;t++) {
 946         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 947         m->stats = code_get_statistics(m->code, m->exceptions);
 948     }
 949
 950     /* level init scope depths: The init scope depth of a method is
 951        always as least as high as the init scope depth of it's surrounding
 952        class.
 953        A method has it's own init_scope_depth if it's an init method
 954        (then its init scope depth is zero), or if it's used as a closure.
 955
 956        Not sure yet what to do with methods which are used at different
 957        locations- e.g. the nullmethod is used all over the place.
 958        EDIT: flashplayer doesn't allow this anyway- a method can only
 959              be used once
 960
 961        Also, I have the strong suspicion that flash player uses only
 962        the difference between max_scope_stack and init_scope_stack, anyway.
 963      */
 964     for(t=0;t<file->classes->num;t++) {
 965         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 966         trait_list_t*traits = c->traits;
 967         if(c->constructor && c->constructor->body &&
 968            c->constructor->body->init_scope_depth < c->init_scope_depth) {
 969            c->constructor->body->init_scope_depth = c->init_scope_depth;
 970         }
 971         if(c->static_constructor && c->static_constructor->body &&
 972            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
 973            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
 974         }
 975         while(traits) {
 976             trait_t*trait = traits->trait;
 977             if(trait_is_method(trait) && trait->method->body) {
 978                 abc_method_body_t*body = trait->method->body;
 979                 if(body->init_scope_depth < c->init_scope_depth) {
 980                    body->init_scope_depth = c->init_scope_depth;
 981                 }
 982             }
 983             traits = traits->next;
 984         }
 985     }
 986
 987     for(t=0;t<file->methods->num;t++) {
 988         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 989         int n = 0;
 990         multiname_list_t*l = m->parameters;
 991         int num_params = list_length(m->parameters);
 992         swf_SetU30(tag, num_params);
 993         if(m->return_type)
 994             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
 995         else
 996             swf_SetU30(tag, 0);
 997         int s;
 998         while(l) {
 999             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1000             l = l->next;
1001         }
1002         if(m->name) {
1003             swf_SetU30(tag, pool_register_string(pool, m->name));
1004         } else {
1005             swf_SetU30(tag, 0);
1006         }
1007
1008         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1009         if(m->optional_parameters)
1010             flags |= METHOD_HAS_OPTIONAL;
1011         if(m->body) {
1012             flags |= m->body->stats->flags;
1013         }
1014
1015         swf_SetU8(tag, flags);
1016         if(flags&METHOD_HAS_OPTIONAL) {
1017             swf_SetU30(tag, list_length(m->optional_parameters));
1018             constant_list_t*l = m->optional_parameters;
1019             while(l) {
1020                 swf_SetU30(tag, constant_get_index(pool, l->constant));
1021                 swf_SetU8(tag, l->constant->type);
1022                 l = l->next;
1023             }
1024         }
1025     }
1026
1027     /* write metadata */
1028     swf_SetU30(tag, file->metadata->num);
1029     for(t=0;t<file->metadata->num;t++) {
1030         const char*entry_name = array_getkey(file->metadata, t);
1031         swf_SetU30(tag, pool_register_string(pool, entry_name));
1032         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1033         swf_SetU30(tag, items->num);
1034         int s;
1035         for(s=0;s<items->num;s++) {
1036             int i1 = pool_register_string(pool, array_getkey(items, s));
1037             int i2 = pool_register_string(pool, array_getvalue(items, s));
1038             swf_SetU30(tag, i1);
1039             swf_SetU30(tag, i2);
1040         }
1041     }
1042
1043     swf_SetU30(tag, file->classes->num);
1044     for(t=0;t<file->classes->num;t++) {
1045         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1046
1047         int classname_index = pool_register_multiname(pool, c->classname);
1048         int superclass_index = pool_register_multiname(pool, c->superclass);
1049
1050         swf_SetU30(tag, classname_index);
1051         swf_SetU30(tag, superclass_index);
1052
1053         swf_SetU8(tag, c->flags); // flags
1054         if(c->flags&0x08) {
1055             int ns_index = pool_register_namespace(pool, c->protectedNS);
1056             swf_SetU30(tag, ns_index);
1057         }
1058
1059         swf_SetU30(tag, list_length(c->interfaces));
1060         multiname_list_t*interface= c->interfaces;
1061         while(interface) {
1062             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1063             interface = interface->next;
1064         }
1065
1066         assert(c->constructor);
1067         swf_SetU30(tag, c->constructor->index);
1068
1069         traits_write(pool, tag, c->traits);
1070     }
1071     for(t=0;t<file->classes->num;t++) {
1072         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1073         assert(c->static_constructor);
1074         swf_SetU30(tag, c->static_constructor->index);
1075
1076         traits_write(pool, tag, c->static_traits);
1077     }
1078
1079     swf_SetU30(tag, file->scripts->num);
1080     for(t=0;t<file->scripts->num;t++) {
1081         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1082         swf_SetU30(tag, s->method->index); //!=t!
1083         traits_write(pool, tag, s->traits);
1084     }
1085
1086     swf_SetU30(tag, file->method_bodies->num);
1087     for(t=0;t<file->method_bodies->num;t++) {
1088         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1089         abc_method_t*m = c->method;
1090         swf_SetU30(tag, m->index);
1091
1092         //swf_SetU30(tag, c->old.max_stack);
1093         //swf_SetU30(tag, c->old.local_count);
1094         //swf_SetU30(tag, c->old.init_scope_depth);
1095         //swf_SetU30(tag, c->old.max_scope_depth);
1096
1097         swf_SetU30(tag, c->stats->max_stack);
1098
1099         int param_num = list_length(c->method->parameters)+1;
1100         if(c->method->flags&METHOD_NEED_REST)
1101             param_num++;
1102         if(param_num <= c->stats->local_count)
1103             swf_SetU30(tag, c->stats->local_count);
1104         else
1105             swf_SetU30(tag, param_num);
1106
1107         swf_SetU30(tag, c->init_scope_depth);
1108         swf_SetU30(tag, c->stats->max_scope_depth+
1109                         c->init_scope_depth);
1110
1111         code_write(tag, c->code, pool, file);
1112
1113         swf_SetU30(tag, list_length(c->exceptions));
1114         abc_exception_list_t*l = c->exceptions;
1115         while(l) {
1116             // warning: assumes "pos" in each code_t is up-to-date
1117             swf_SetU30(tag, l->abc_exception->from->pos);
1118             swf_SetU30(tag, l->abc_exception->to->pos);
1119             swf_SetU30(tag, l->abc_exception->target->pos);
1120             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1121             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1122             l = l->next;
1123         }
1124
1125         traits_write(pool, tag, c->traits);
1126     }
1127
1128     /* free temporary codestat data again. Notice: If we were to write this
1129        file multiple times, this can also be shifted to abc_file_free() */
1130     for(t=0;t<file->method_bodies->num;t++) {
1131         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1132         codestats_free(m->stats);m->stats=0;
1133     }
1134
1135     // --- start to write real tag --
1136
1137     tag = abctag;
1138
1139     if(tag->id == ST_DOABC) {
1140         swf_SetU32(tag, file->flags); // flags
1141         swf_SetString(tag, file->name);
1142     }
1143
1144     swf_SetU16(tag, 0x10); //version
1145     swf_SetU16(tag, 0x2e);
1146
1147     pool_write(pool, tag);
1148
1149     swf_SetBlock(tag, tmp->data, tmp->len);
1150
1151     swf_DeleteTag(0, tmp);
1152     pool_destroy(pool);
1153 }
1154
1155 void abc_file_free(abc_file_t*file)
1156 {
1157     int t;
1158     if(file->metadata) {
1159         for(t=0;t<file->metadata->num;t++) {
1160             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1161             int s;
1162             for(s=0;s<items->num;s++) {
1163                 free(array_getvalue(items, s));
1164             }
1165             array_free(items);
1166         }
1167         array_free(file->metadata);file->metadata=0;
1168     }
1169
1170     for(t=0;t<file->methods->num;t++) {
1171         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1172
1173         multiname_list_t*param = m->parameters;
1174         while(param) {
1175             multiname_destroy(param->multiname);param->multiname=0;
1176             param = param->next;
1177         }
1178         list_free(m->parameters);m->parameters=0;
1179
1180         constant_list_t*opt = m->optional_parameters;
1181         while(opt) {
1182             constant_free(opt->constant);opt->constant=0;
1183             opt = opt->next;
1184         }
1185         list_free(m->optional_parameters);m->optional_parameters=0;
1186
1187         if(m->name) {
1188             free((void*)m->name);m->name=0;
1189         }
1190         if(m->return_type) {
1191             multiname_destroy(m->return_type);
1192         }
1193         free(m);
1194     }
1195     array_free(file->methods);file->methods=0;
1196
1197     for(t=0;t<file->classes->num;t++) {
1198         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1199         traits_free(cls->traits);cls->traits=0;
1200         traits_free(cls->static_traits);cls->static_traits=0;
1201
1202         if(cls->classname) {
1203             multiname_destroy(cls->classname);
1204         }
1205         if(cls->superclass) {
1206             multiname_destroy(cls->superclass);
1207         }
1208
1209         multiname_list_t*i = cls->interfaces;
1210         while(i) {
1211             multiname_destroy(i->multiname);i->multiname=0;
1212             i = i->next;
1213         }
1214         list_free(cls->interfaces);cls->interfaces=0;
1215
1216         if(cls->protectedNS) {
1217             namespace_destroy(cls->protectedNS);
1218         }
1219         free(cls);
1220     }
1221     array_free(file->classes);file->classes=0;
1222
1223     for(t=0;t<file->scripts->num;t++) {
1224         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1225         traits_free(s->traits);s->traits=0;
1226         free(s);
1227     }
1228     array_free(file->scripts);file->scripts=0;
1229
1230     for(t=0;t<file->method_bodies->num;t++) {
1231         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1232         code_free(body->code);body->code=0;
1233         traits_free(body->traits);body->traits=0;
1234
1235         abc_exception_list_t*ee = body->exceptions;
1236         while(ee) {
1237             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1238             e->from = e->to = e->target = 0;
1239             multiname_destroy(e->exc_type);e->exc_type=0;
1240             multiname_destroy(e->var_name);e->var_name=0;
1241             free(e);
1242             ee=ee->next;
1243         }
1244         list_free(body->exceptions);body->exceptions=0;
1245
1246         free(body);
1247     }
1248     array_free(file->method_bodies);file->method_bodies=0;
1249
1250     if(file->name) {
1251         free((void*)file->name);file->name=0;
1252     }
1253
1254     free(file);
1255 }
1256
1257 void swf_FreeABC(void*code)
1258 {
1259     abc_file_t*file= (abc_file_t*)code;
1260     abc_file_free(file);
1261 }
1262
1263 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1264 {
1265     int num_frames = 0;
1266     int has_buttons = 0;
1267     TAG*tag=swf->firstTag;
1268     while(tag) {
1269         if(tag->id == ST_SHOWFRAME)
1270             num_frames++;
1271         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1272             has_buttons = 1;
1273         tag = tag->next;
1274     }
1275
1276     abc_file_t*file = abc_file_new();
1277     abc_method_body_t*c = 0;
1278
1279     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1280     abc_class_protectedNS(cls, "rfx:MainTimeline");
1281
1282     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1283
1284     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1285     swf_SetU16(tag, 1);
1286     swf_SetU16(tag, 0);
1287     swf_SetString(tag, "rfx.MainTimeline");
1288
1289     c = abc_class_staticconstructor(cls, 0)->body;
1290     c->old.max_stack = 1;
1291     c->old.local_count = 1;
1292     c->old.init_scope_depth = 9;
1293     c->old.max_scope_depth = 10;
1294
1295     __ getlocal_0(c);
1296     __ pushscope(c);
1297     __ returnvoid(c);
1298
1299     c = abc_class_constructor(cls, 0)->body;
1300     c->old.max_stack = 3;
1301     c->old.local_count = 1;
1302     c->old.init_scope_depth = 10;
1303     c->old.max_scope_depth = 11;
1304
1305     debugfile(c, "constructor.as");
1306
1307     __ getlocal_0(c);
1308     __ pushscope(c);
1309
1310     __ getlocal_0(c);
1311     __ constructsuper(c,0);
1312
1313     __ getlex(c, "[package]flash.system::Security");
1314     __ pushstring(c, "*");
1315     __ callpropvoid(c, "[package]::allowDomain", 1);
1316
1317     if(stop_each_frame || has_buttons) {
1318         int frame = 0;
1319         tag = swf->firstTag;
1320         abc_method_body_t*f = 0; //frame script
1321         while(tag && tag->id!=ST_END) {
1322             char framename[80];
1323             char needs_framescript=0;
1324             char buttonname[80];
1325             char functionname[80];
1326             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1327
1328             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1329                 /* make the contructor add a frame script */
1330                 __ findpropstrict(c,"[package]::addFrameScript");
1331                 __ pushbyte(c,frame);
1332                 __ getlex(c,framename);
1333                 __ callpropvoid(c,"[package]::addFrameScript",2);
1334
1335                 f = abc_class_method(cls, 0, multiname_fromstring(framename))->body;
1336                 f->old.max_stack = 3;
1337                 f->old.local_count = 1;
1338                 f->old.init_scope_depth = 10;
1339                 f->old.max_scope_depth = 11;
1340                 __ debugfile(f, "framescript.as");
1341                 __ debugline(f, 1);
1342                 __ getlocal_0(f);
1343                 __ pushscope(f);
1344                 if(stop_each_frame) {
1345                     __ findpropstrict(f, "[package]::stop");
1346                     __ callpropvoid(f, "[package]::stop", 0);
1347                 }
1348             }
1349
1350             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1351                 U16 id = swf_GetDefineID(tag);
1352                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1353                 __ getlex(f,buttonname);
1354                 __ getlex(f,"flash.events::MouseEvent");
1355                 __ getproperty(f, "::CLICK");
1356                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1357                 __ getlex(f,functionname);
1358                 __ callpropvoid(f, "::addEventListener" ,2);
1359
1360                 needs_framescript = 1;
1361
1362                 abc_method_body_t*h =
1363                     abc_class_method(cls, 0, multiname_fromstring(functionname))->body;
1364                 list_append(h->method->parameters, multiname_fromstring("flash.events::MouseEvent"));
1365
1366                 h->old.max_stack = 6;
1367                 h->old.local_count = 2;
1368                 h->old.init_scope_depth = 10;
1369                 h->old.max_scope_depth = 11;
1370                 __ getlocal_0(h);
1371                 __ pushscope(h);
1372
1373                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1374                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1375                     int framenr = GET16(oldaction->data);
1376                     if(framenr>254) {
1377                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1378                     }
1379                     if(!events) {
1380                         __ findpropstrict(h,"[package]::gotoAndStop");
1381                         __ pushbyte(h,framenr+1);
1382                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1383                     } else {
1384                         char framename[80];
1385                         sprintf(framename, "frame%d", framenr);
1386                         __ getlocal_0(h); //this
1387                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1388                         __ pushstring(h, "link");
1389                         __ pushtrue(h);
1390                         __ pushtrue(h);
1391                         __ pushstring(h, framename);
1392                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1393                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1394                     }
1395                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1396                     if(!events) {
1397                         __ findpropstrict(h,"flash.net::navigateToURL");
1398                         __ findpropstrict(h,"flash.net::URLRequest");
1399                         // TODO: target _blank
1400                         __ pushstring(h,oldaction->data); //url
1401                         __ constructprop(h,"flash.net::URLRequest", 1);
1402                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1403                     } else {
1404                         __ getlocal_0(h); //this
1405                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1406                         __ pushstring(h, "link");
1407                         __ pushtrue(h);
1408                         __ pushtrue(h);
1409                         __ pushstring(h,oldaction->data); //url
1410                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1411                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1412                     }
1413                 } else if(oldaction) {
1414                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1415                 }
1416                 __ returnvoid(h);
1417                 swf_ActionFree(oldaction);
1418             }
1419             if(tag->id == ST_SHOWFRAME) {
1420                 if(f) {
1421                     __ returnvoid(f);
1422                     f = 0;
1423                 }
1424                 frame++;
1425             }
1426             tag = tag->next;
1427         }
1428         if(f) {
1429             __ returnvoid(f);
1430         }
1431     }
1432     __ returnvoid(c);
1433
1434     tag = swf->firstTag;
1435     while(tag) {
1436         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1437             char buttonname[80];
1438             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1439             multiname_t*s = multiname_fromstring(buttonname);
1440             abc_class_slot(cls, multiname_fromstring(buttonname), s);
1441         }
1442         tag = tag->next;
1443     }
1444
1445
1446     abc_script_t*s = abc_initscript(file, 0);
1447     c = s->method->body;
1448     c->old.max_stack = 2;
1449     c->old.local_count = 1;
1450     c->old.init_scope_depth = 1;
1451     c->old.max_scope_depth = 9;
1452
1453     __ getlocal_0(c);
1454     __ pushscope(c);
1455     __ getscopeobject(c, 0);
1456     __ getlex(c,"::Object");
1457     __ pushscope(c);
1458     __ getlex(c,"flash.events::EventDispatcher");
1459     __ pushscope(c);
1460     __ getlex(c,"flash.display::DisplayObject");
1461     __ pushscope(c);
1462     __ getlex(c,"flash.display::InteractiveObject");
1463     __ pushscope(c);
1464     __ getlex(c,"flash.display::DisplayObjectContainer");
1465     __ pushscope(c);
1466     __ getlex(c,"flash.display::Sprite");
1467     __ pushscope(c);
1468     __ getlex(c,"flash.display::MovieClip");
1469     __ pushscope(c);
1470     __ getlex(c,"flash.display::MovieClip");
1471     __ newclass(c,cls);
1472     __ popscope(c);
1473     __ popscope(c);
1474     __ popscope(c);
1475     __ popscope(c);
1476     __ popscope(c);
1477     __ popscope(c);
1478     __ popscope(c);
1479     __ initproperty(c,"rfx::MainTimeline");
1480     __ returnvoid(c);
1481
1482     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1483     multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1484     abc_initscript_addClassTrait(s, classname, cls);
1485     multiname_destroy(classname);
1486
1487     swf_WriteABC(abctag, file);
1488 }
1489