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