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 void params_dump(FILE*fo, multiname_list_t*l, constant_list_t*o)
  44 {
  45     int n = list_length(l);
  46     int no = list_length(o);
  47     int i = 0;
  48
  49     fprintf(fo, "(");
  50     while(l) {
  51         char*s = multiname_tostring(l->multiname);
  52         fprintf(fo, s);
  53         free(s);
  54         if(i>=n-no) {
  55             s = constant_tostring(o->constant);
  56             fprintf(fo, " = ");
  57             fprintf(fo, s);
  58             free(s);
  59             o = o->next;
  60         }
  61
  62         if(l->next)
  63             fprintf(fo, ", ");
  64         l = l->next;i++;
  65     }
  66     fprintf(fo, ")");
  67 }
  68
  69 //#define DEBUG
  70 #define DEBUG if(0)
  71
  72 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
  73 {
  74     int t;
  75     int num_metadata = swf_GetU30(tag);
  76
  77     DEBUG printf("%d metadata\n");
  78     for(t=0;t<num_metadata;t++) {
  79         const char*entry_name = pool_lookup_string(pool, swf_GetU30(tag));
  80         int num = swf_GetU30(tag);
  81         int s;
  82         DEBUG printf("  %s\n", entry_name);
  83         array_t*items = array_new();
  84         for(s=0;s<num;s++) {
  85             int i1 = swf_GetU30(tag);
  86             int i2 = swf_GetU30(tag);
  87             const char*key = i1?pool_lookup_string(pool, i1):"";
  88             const char*value = i2?pool_lookup_string(pool, i2):"";
  89             DEBUG printf("    %s=%s\n", key, value);
  90             array_append(items, key, strdup(value));
  91         }
  92         array_append(file->metadata, entry_name, items);
  93     }
  94 }
  95
  96 void swf_CopyData(TAG*to, TAG*from, int len)
  97 {
  98     unsigned char*data = malloc(len);
  99     swf_GetBlock(from, data, len);
 100     swf_SetBlock(to, data, len);
 101     free(data);
 102 }
 103
 104 abc_file_t*abc_file_new()
 105 {
 106     abc_file_t*f = malloc(sizeof(abc_file_t));
 107     memset(f, 0, sizeof(abc_file_t));
 108     f->metadata = array_new();
 109
 110     f->methods = array_new();
 111     f->classes = array_new();
 112     f->scripts = array_new();
 113     f->method_bodies = array_new();
 114     f->flags = ABCFILE_LAZY;
 115
 116     return f;
 117 }
 118
 119 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
 120
 121     NEW(abc_class_t,c);
 122     array_append(file->classes, NO_KEY, c);
 123
 124     c->file = file;
 125     c->classname = multiname_clone(classname);
 126     c->superclass = multiname_clone(superclass);
 127     c->flags = 0;
 128     c->constructor = 0;
 129     c->static_constructor = 0;
 130     c->traits = list_new();
 131     return c;
 132 }
 133 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 134 {
 135     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 136 }
 137
 138 void abc_class_sealed(abc_class_t*c)
 139 {
 140     c->flags |= CLASS_SEALED;
 141 }
 142 void abc_class_final(abc_class_t*c)
 143 {
 144     c->flags |= CLASS_FINAL;
 145 }
 146 void abc_class_interface(abc_class_t*c)
 147 {
 148     c->flags |= CLASS_INTERFACE;
 149 }
 150 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 151 {
 152     c->protectedNS = namespace_new_protected(namespace);
 153     c->flags |= CLASS_PROTECTED_NS;
 154 }
 155 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 156 {
 157     list_append(c->interfaces, multiname_clone(interface));
 158 }
 159
 160 void abc_method_init(abc_method_t*m, abc_file_t*file, multiname_t*returntype, char body)
 161 {
 162     /* construct method object */
 163     m->index = array_length(file->methods);
 164     array_append(file->methods, NO_KEY, m);
 165     m->return_type = returntype;
 166
 167     if(body) {
 168         /* construct code (method body) object */
 169         NEW(abc_method_body_t,c);
 170         array_append(file->method_bodies, NO_KEY, c);
 171         c->index = array_length(file->method_bodies);
 172         c->file = file;
 173         c->traits = list_new();
 174         c->code = 0;
 175
 176         /* crosslink the two objects */
 177         m->body = c;
 178         c->method = m;
 179     }
 180 }
 181 abc_method_t* abc_method_new(abc_file_t*file, multiname_t*returntype, char body)
 182 {
 183     NEW(abc_method_t,m);
 184     abc_method_init(m, file, returntype, body);
 185     return m;
 186 }
 187
 188 abc_method_t* abc_class_getconstructor(abc_class_t*cls, multiname_t*returntype)
 189 {
 190     if(cls->constructor) {
 191         return cls->constructor;
 192     }
 193     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 194     cls->constructor = m;
 195     return m;
 196 }
 197
 198 abc_method_t* abc_class_getstaticconstructor(abc_class_t*cls, multiname_t*returntype)
 199 {
 200     if(cls->static_constructor) {
 201         return cls->static_constructor;
 202     }
 203     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 204     cls->static_constructor = m;
 205     return m;
 206 }
 207
 208 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 209 {
 210     trait_t*trait = malloc(sizeof(trait_t));
 211     memset(trait, 0, sizeof(trait_t));
 212     trait->kind = type&0x0f;
 213     trait->attributes = type&0xf0;
 214     trait->name = name;
 215     trait->data1 = data1;
 216     trait->data2 = data2;
 217     trait->value = v;
 218     return trait;
 219 }
 220
 221 trait_t*trait_new_member(trait_list_t**traits, multiname_t*type, multiname_t*name,constant_t*v)
 222 {
 223     int kind = TRAIT_SLOT;
 224     trait_t*trait = malloc(sizeof(trait_t));
 225     memset(trait, 0, sizeof(trait_t));
 226     trait->kind = kind&0x0f;
 227     trait->attributes = kind&0xf0;
 228     trait->name = name;
 229     trait->type_name = type;
 230
 231     trait->slot_id = list_length(*traits)+1;
 232     trait_list_t*l = *traits;
 233     list_append_(traits, trait);
 234     return trait;
 235 }
 236 trait_t*trait_new_method(trait_list_t**traits, multiname_t*name, abc_method_t*m)
 237 {
 238     int type = TRAIT_METHOD;
 239     trait_t*trait = malloc(sizeof(trait_t));
 240     memset(trait, 0, sizeof(trait_t));
 241     trait->kind = type&0x0f;
 242     trait->attributes = type&0xf0;
 243     trait->name = name;
 244     trait->method = m;
 245
 246     /* start assigning traits at position #1.
 247        Weird things happen when assigning slot 0- slot 0 and 1 seem
 248        to be identical */
 249     trait->slot_id = list_length(*traits)+1;
 250     list_append_(traits, trait);
 251     return trait;
 252 }
 253
 254 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 255 {
 256     abc_file_t*file = cls->file;
 257     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 258     m->trait = trait_new_method(&cls->traits, multiname_clone(name), m);
 259     return m;
 260 }
 261 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 262 {
 263     abc_file_t*file = cls->file;
 264     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 265     m->trait = trait_new_method(&cls->static_traits, multiname_clone(name), m);
 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(&cls->traits, m_type, m_name, 0);
 275     return t;
 276 }
 277 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 278 {
 279     abc_file_t*file = cls->file;
 280     multiname_t*m_name = multiname_clone(name);
 281     multiname_t*m_type = multiname_clone(type);
 282     trait_t*t = trait_new_member(&cls->static_traits, m_type, m_name, 0);
 283     return t;
 284 }
 285
 286
 287 trait_t* traits_find_slotid(trait_list_t*traits, int slotid)
 288 {
 289     trait_list_t*l;
 290     trait_t*t=0;
 291     for(l=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)
 323 {
 324     abc_method_t*m = abc_method_new(file, 0, 1);
 325     abc_script_t* s = malloc(sizeof(abc_script_t));
 326     s->method = m;
 327     s->traits = list_new();
 328     s->file = file;
 329     array_append(file->scripts, NO_KEY, s);
 330     return s;
 331 }
 332
 333 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen);
 334
 335 static void dump_method(FILE*fo, const char*prefix,
 336                                  const char*attr,
 337                                  const char*type,
 338                                  const char*name,
 339                                  abc_method_t*m, abc_file_t*file, dict_t*methods_seen)
 340 {
 341     if(methods_seen)
 342         dict_put(methods_seen, m, 0);
 343
 344     char*return_type = 0;
 345     if(m->return_type)
 346         return_type = multiname_tostring(m->return_type);
 347     else
 348         return_type = strdup("void");
 349
 350     fprintf(fo, "%s", prefix);
 351     fprintf(fo, "%s %s ", attr, type);
 352     fprintf(fo, "%s %s=%s", return_type, name, m->name);
 353     params_dump(fo, m->parameters, m->optional_parameters);
 354     fprintf(fo, "(%d params, %d optional)\n", list_length(m->parameters), list_length(m->optional_parameters));
 355
 356     free(return_type);return_type=0;
 357
 358     abc_method_body_t*c = m->body;
 359     if(!c) {
 360         return;
 361     }
 362
 363     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 364             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 365             c->old.max_scope_depth);
 366
 367
 368     int flags = c->method->flags;
 369     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 370     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 371     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 372     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 373     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 374     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 375     if(flags) fprintf(fo, " %02x", flags);
 376     fprintf(fo, "]");
 377
 378     if(m->trait) {
 379         fprintf(fo, " slot:%d", m->trait->slot_id);
 380     }
 381     fprintf(fo, "\n");
 382
 383
 384     char prefix2[80];
 385     sprintf(prefix2, "%s    ", prefix);
 386     if(c->traits)
 387         traits_dump(fo, prefix, c->traits, file, methods_seen);
 388     fprintf(fo, "%s{\n", prefix);
 389     code_dump2(c->code, c->exceptions, file, prefix2, fo);
 390     fprintf(fo, "%s}\n\n", prefix);
 391 }
 392
 393 static void traits_free(trait_list_t*traits)
 394 {
 395     trait_list_t*t = traits;
 396     while(t) {
 397         if(t->trait->name) {
 398             multiname_destroy(t->trait->name);t->trait->name = 0;
 399         }
 400         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 401             multiname_destroy(t->trait->type_name);
 402         }
 403         if(t->trait->value) {
 404             constant_free(t->trait->value);t->trait->value = 0;
 405         }
 406         free(t->trait);t->trait = 0;
 407         t = t->next;
 408     }
 409     list_free(traits);
 410 }
 411
 412 static char trait_is_method(trait_t*trait)
 413 {
 414     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 415             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 416 }
 417
 418 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 419 {
 420     int num_traits = swf_GetU30(tag);
 421     trait_list_t*traits = list_new();
 422     int t;
 423     if(num_traits) {
 424         DEBUG printf("%d traits\n", num_traits);
 425     }
 426
 427     for(t=0;t<num_traits;t++) {
 428         NEW(trait_t,trait);
 429         list_append(traits, trait);
 430
 431         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 432
 433         const char*name = 0;
 434         DEBUG name = multiname_tostring(trait->name);
 435         U8 kind = swf_GetU8(tag);
 436         U8 attributes = kind&0xf0;
 437         kind&=0x0f;
 438         trait->kind = kind;
 439         trait->attributes = attributes;
 440         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 441         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 442             trait->disp_id = swf_GetU30(tag);
 443             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 444             trait->method->trait = trait;
 445             DEBUG printf("  method/getter/setter\n");
 446         } else if(kind == TRAIT_FUNCTION) { // function
 447             trait->slot_id =  swf_GetU30(tag);
 448             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 449             trait->method->trait = trait;
 450         } else if(kind == TRAIT_CLASS) { // class
 451             trait->slot_id = swf_GetU30(tag);
 452             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 453             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 454         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 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, dict_t*methods_seen)
 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
 557         char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
 558         char* type = "";
 559         if(a==TRAIT_ATTR_FINAL)
 560             type = "final ";
 561         else if(a==TRAIT_ATTR_OVERRIDE)
 562             type = "override ";
 563         else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
 564             type = "final override ";
 565
 566         if(attributes&TRAIT_ATTR_METADATA)
 567             fprintf(fo, "<metadata>");
 568
 569         if(kind == TRAIT_METHOD) {
 570             abc_method_t*m = trait->method;
 571             dump_method(fo, prefix, type, "method", name, m, file, methods_seen);
 572         } else if(kind == TRAIT_GETTER) {
 573             abc_method_t*m = trait->method;
 574             dump_method(fo, prefix, type, "getter", name, m, file, methods_seen);
 575         } else if(kind == TRAIT_SETTER) {
 576             abc_method_t*m = trait->method;
 577             dump_method(fo, prefix, type, "setter", name, m, file, methods_seen);
 578         } else if(kind == TRAIT_FUNCTION) { // function
 579             abc_method_t*m = trait->method;
 580             dump_method(fo, prefix, type, "function", name, m, file, methods_seen);
 581         } else if(kind == TRAIT_CLASS) { // class
 582             abc_class_t*cls = trait->cls;
 583             if(!cls) {
 584                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 585             } else {
 586                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 587             }
 588         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 589             int slot_id = trait->slot_id;
 590             char*type_name = multiname_tostring(trait->type_name);
 591             char*value = constant_tostring(trait->value);
 592             fprintf(fo, "%sslot %d: %s %s:%s %s %s\n", prefix, trait->slot_id,
 593                     kind==TRAIT_CONST?"const":"var", name, type_name,
 594                     value?"=":"", value?value:"");
 595             if(value) free(value);
 596             free(type_name);
 597         } else {
 598             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 599         }
 600         free(name);
 601         traits=traits->next;
 602     }
 603 }
 604
 605 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 606 {
 607     abc_file_t* file = (abc_file_t*)code;
 608
 609     if(file->name) {
 610         fprintf(fo, "%s#\n", prefix);
 611         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 612         fprintf(fo, "%s#\n", prefix);
 613     }
 614
 615     int t;
 616     for(t=0;t<file->metadata->num;t++) {
 617         const char*entry_name = array_getkey(file->metadata, t);
 618         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 619         int s;
 620         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 621         for(s=0;s<items->num;s++) {
 622             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 623         }
 624         fprintf(fo, "%s#\n", prefix);
 625     }
 626
 627     dict_t*methods_seen = dict_new2(&ptr_type);
 628     for(t=0;t<file->classes->num;t++) {
 629         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 630         char prefix2[80];
 631         sprintf(prefix2, "%s    ", prefix);
 632
 633         fprintf(fo, "%s", prefix);
 634         if(cls->flags&1) fprintf(fo, "sealed ");
 635         if(cls->flags&2) fprintf(fo, "final ");
 636         if(cls->flags&4) fprintf(fo, "interface ");
 637         if(cls->flags&8) {
 638             char*s = namespace_tostring(cls->protectedNS);
 639             fprintf(fo, "protectedNS(%s) ", s);
 640             free(s);
 641         }
 642
 643         char*classname = multiname_tostring(cls->classname);
 644         fprintf(fo, "class %s", classname);
 645         free(classname);
 646         if(cls->superclass) {
 647             char*supername = multiname_tostring(cls->superclass);
 648             fprintf(fo, " extends %s", supername);
 649             free(supername);
 650             multiname_list_t*ilist = cls->interfaces;
 651             if(ilist)
 652                 fprintf(fo, " implements");
 653             while(ilist) {
 654                 char*s = multiname_tostring(ilist->multiname);
 655                 fprintf(fo, " %s", s);
 656                 free(s);
 657                 ilist = ilist->next;
 658             }
 659             ilist->next;
 660         }
 661         if(cls->flags&0xf0)
 662             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 663         fprintf(fo, "%s{\n", prefix);
 664
 665         dict_put(methods_seen, cls->static_constructor, 0);
 666         dict_put(methods_seen, cls->constructor, 0);
 667
 668         if(cls->static_constructor) {
 669             dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file, methods_seen);
 670         }
 671         traits_dump(fo, prefix2, cls->static_traits, file, methods_seen);
 672
 673         char*n = multiname_tostring(cls->classname);
 674         if(cls->constructor)
 675             dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file, methods_seen);
 676         free(n);
 677         traits_dump(fo, prefix2,cls->traits, file, methods_seen);
 678         fprintf(fo, "%s}\n", prefix);
 679     }
 680     fprintf(fo, "%s\n", prefix);
 681
 682     for(t=0;t<file->scripts->num;t++) {
 683         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 684         dump_method(fo, prefix, "", "initmethod", "init", s->method, file, methods_seen);
 685         traits_dump(fo, prefix, s->traits, file, methods_seen);
 686     }
 687
 688     char extra=0;
 689     for(t=0;t<file->methods->num;t++) {
 690         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 691         if(!dict_contains(methods_seen, m)) {
 692             if(!extra) {
 693                 extra=1;
 694                 fprintf(fo, "\n");
 695                 fprintf(fo, "%s//internal (non-class non-script) methods:\n", prefix);
 696             }
 697             char name[18];
 698             sprintf(name, "%08x ", m->index);
 699             dump_method(fo, prefix, "", "internalmethod", name, m, file, methods_seen);
 700         }
 701     }
 702     dict_destroy(methods_seen);
 703
 704     return file;
 705 }
 706
 707 void* swf_ReadABC(TAG*tag)
 708 {
 709     abc_file_t* file = abc_file_new();
 710     pool_t*pool = pool_new();
 711
 712     swf_SetTagPos(tag, 0);
 713     int t;
 714     if(tag->id == ST_DOABC) {
 715         U32 abcflags = swf_GetU32(tag);
 716         DEBUG printf("flags=%08x\n", abcflags);
 717         char*name= swf_GetString(tag);
 718         file->name = (name&&name[0])?strdup(name):0;
 719     }
 720     U32 version = swf_GetU32(tag);
 721     if(version!=0x002e0010) {
 722         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 723     }
 724
 725     pool_read(pool, tag);
 726
 727     int num_methods = swf_GetU30(tag);
 728     DEBUG printf("%d methods\n", num_methods);
 729     for(t=0;t<num_methods;t++) {
 730         NEW(abc_method_t,m);
 731         int param_count = swf_GetU30(tag);
 732         int return_type_index = swf_GetU30(tag);
 733         if(return_type_index)
 734             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 735         else
 736             m->return_type = 0;
 737
 738         int s;
 739         for(s=0;s<param_count;s++) {
 740             int type_index = swf_GetU30(tag);
 741
 742             /* type_index might be 0 ("*") */
 743             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 744             list_append(m->parameters, param);
 745         }
 746
 747         int namenr = swf_GetU30(tag);
 748         if(namenr)
 749             m->name = strdup(pool_lookup_string(pool, namenr));
 750         else
 751             m->name = strdup("");
 752
 753         m->flags = swf_GetU8(tag);
 754
 755         DEBUG printf("method %d) %s ", m->name);
 756         DEBUG params_dump(stdout, m->parameters, m->optional_parameters);
 757         DEBUG printf("flags=%02x\n", t, m->flags);
 758
 759         if(m->flags&0x08) {
 760             m->optional_parameters = list_new();
 761             int num = swf_GetU30(tag);
 762             int s;
 763             for(s=0;s<num;s++) {
 764                 int vindex = swf_GetU30(tag);
 765                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 766                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 767                 list_append(m->optional_parameters, c);
 768
 769             }
 770         }
 771         if(m->flags&0x80) {
 772             /* debug information- not used by avm2 */
 773             multiname_list_t*l = m->parameters;
 774             while(l) {
 775                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 776                 l = l->next;
 777             }
 778         }
 779         m->index = array_length(file->methods);
 780         array_append(file->methods, NO_KEY, m);
 781     }
 782
 783     parse_metadata(tag, file, pool);
 784
 785     /* skip classes, and scripts for now, and do the real parsing later */
 786     int num_classes = swf_GetU30(tag);
 787     int classes_pos = tag->pos;
 788     DEBUG printf("%d classes\n", num_classes);
 789     for(t=0;t<num_classes;t++) {
 790         abc_class_t*cls = malloc(sizeof(abc_class_t));
 791         memset(cls, 0, sizeof(abc_class_t));
 792
 793         swf_GetU30(tag); //classname
 794         swf_GetU30(tag); //supername
 795
 796         array_append(file->classes, NO_KEY, cls);
 797
 798         cls->flags = swf_GetU8(tag);
 799         DEBUG printf("class %d %02x\n", t, cls->flags);
 800         if(cls->flags&8)
 801             swf_GetU30(tag); //protectedNS
 802         int s;
 803         int inum = swf_GetU30(tag); //interface count
 804         cls->interfaces = 0;
 805         for(s=0;s<inum;s++) {
 806             int interface_index = swf_GetU30(tag);
 807             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 808             list_append(cls->interfaces, m);
 809             DEBUG printf("  class %d interface: %s\n", t, m->name);
 810         }
 811
 812         int iinit = swf_GetU30(tag); //iinit
 813         DEBUG printf("--iinit-->%d\n", iinit);
 814         traits_skip(tag);
 815     }
 816     for(t=0;t<num_classes;t++) {
 817         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 818         int cinit = swf_GetU30(tag);
 819         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 820         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 821         traits_skip(tag);
 822     }
 823     int num_scripts = swf_GetU30(tag);
 824     DEBUG printf("%d scripts\n", num_scripts);
 825     for(t=0;t<num_scripts;t++) {
 826         int init = swf_GetU30(tag);
 827         traits_skip(tag);
 828     }
 829
 830     int num_method_bodies = swf_GetU30(tag);
 831     DEBUG printf("%d method bodies\n", num_method_bodies);
 832     for(t=0;t<num_method_bodies;t++) {
 833         int methodnr = swf_GetU30(tag);
 834         if(methodnr >= file->methods->num) {
 835             printf("Invalid method number: %d\n", methodnr);
 836             return 0;
 837         }
 838         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 839         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 840         memset(c, 0, sizeof(abc_method_body_t));
 841         c->old.max_stack = swf_GetU30(tag);
 842         c->old.local_count = swf_GetU30(tag);
 843         c->old.init_scope_depth = swf_GetU30(tag);
 844         c->old.max_scope_depth = swf_GetU30(tag);
 845
 846         c->init_scope_depth = c->old.init_scope_depth;
 847         int code_length = swf_GetU30(tag);
 848
 849         c->method = m;
 850         m->body = c;
 851
 852         int pos = tag->pos + code_length;
 853         codelookup_t*codelookup = 0;
 854         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 855         tag->pos = pos;
 856
 857         int exception_count = swf_GetU30(tag);
 858         int s;
 859         c->exceptions = list_new();
 860         for(s=0;s<exception_count;s++) {
 861             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 862
 863             e->from = code_atposition(codelookup, swf_GetU30(tag));
 864             e->to = code_atposition(codelookup, swf_GetU30(tag));
 865             e->target = code_atposition(codelookup, swf_GetU30(tag));
 866
 867             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 868             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 869             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 870             //if(e->var_name) e->var_name = strdup(e->var_name);
 871             list_append(c->exceptions, e);
 872         }
 873         codelookup_free(codelookup);
 874         c->traits = traits_parse(tag, pool, file);
 875
 876         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 877
 878         array_append(file->method_bodies, NO_KEY, c);
 879     }
 880     if(tag->len - tag->pos) {
 881         fprintf(stderr, "ERROR: %d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 882         return 0;
 883     }
 884
 885     swf_SetTagPos(tag, classes_pos);
 886     for(t=0;t<num_classes;t++) {
 887         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 888
 889         int classname_index = swf_GetU30(tag);
 890         int superclass_index = swf_GetU30(tag);
 891         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 892         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 893         cls->flags = swf_GetU8(tag);
 894         const char*ns = "";
 895         if(cls->flags&8) {
 896             int ns_index = swf_GetU30(tag);
 897             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 898         }
 899
 900         int num_interfaces = swf_GetU30(tag); //interface count
 901         int s;
 902         for(s=0;s<num_interfaces;s++) {
 903             swf_GetU30(tag);
 904         }
 905         int iinit = swf_GetU30(tag);
 906         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 907         cls->traits = traits_parse(tag, pool, file);
 908     }
 909     for(t=0;t<num_classes;t++) {
 910         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 911         /* SKIP */
 912         swf_GetU30(tag); // cindex
 913         cls->static_traits = traits_parse(tag, pool, file);
 914     }
 915     int num_scripts2 = swf_GetU30(tag);
 916     for(t=0;t<num_scripts2;t++) {
 917         int init = swf_GetU30(tag);
 918         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 919
 920         abc_script_t*s = malloc(sizeof(abc_script_t));
 921         memset(s, 0, sizeof(abc_script_t));
 922         s->method = m;
 923         s->traits = traits_parse(tag, pool, file);
 924         array_append(file->scripts, NO_KEY, s);
 925     }
 926
 927     pool_destroy(pool);
 928     return file;
 929 }
 930
 931 static pool_t*writeABC(TAG*abctag, void*code, pool_t*pool)
 932 {
 933     abc_file_t*file = (abc_file_t*)code;
 934     if(!pool)
 935         pool = pool_new();
 936     if(!file)
 937         file = abc_file_new();
 938
 939     TAG*tmp = swf_InsertTag(0,0);
 940     TAG*tag = tmp;
 941     int t;
 942
 943     /* add method bodies where needed */
 944     for(t=0;t<file->classes->num;t++) {
 945         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 946         if(!c->constructor) {
 947             if(!(c->flags&CLASS_INTERFACE)) {
 948                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 949                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 950                 // don't bother to set m->index
 951                 body->method = m; m->body = body;
 952                 __ returnvoid(body);
 953                 c->constructor = m;
 954             } else {
 955                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 956                 c->constructor = m;
 957             }
 958         }
 959         if(!c->static_constructor) {
 960             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 961             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 962             body->method = m; m->body = body;
 963             __ returnvoid(body);
 964             c->static_constructor = m;
 965         }
 966     }
 967
 968
 969     swf_SetU30(tag, file->methods->num);
 970     /* enumerate classes, methods and method bodies */
 971     for(t=0;t<file->methods->num;t++) {
 972         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 973         m->index = t;
 974     }
 975     for(t=0;t<file->classes->num;t++) {
 976         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 977         c->index = t;
 978     }
 979     for(t=0;t<file->method_bodies->num;t++) {
 980         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 981         m->index = t;
 982     }
 983
 984     /* generate code statistics */
 985     for(t=0;t<file->method_bodies->num;t++) {
 986         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 987         m->stats = code_get_statistics(m->code, m->exceptions);
 988     }
 989
 990     /* level init scope depths: The init scope depth of a method is
 991        always as least as high as the init scope depth of it's surrounding
 992        class.
 993        A method has it's own init_scope_depth if it's an init method
 994        (then its init scope depth is zero), or if it's used as a closure.
 995
 996        Not sure yet what to do with methods which are used at different
 997        locations- e.g. the nullmethod is used all over the place.
 998        EDIT: flashplayer doesn't allow this anyway- a method can only
 999              be used once
1000
1001        Also, I have the strong suspicion that flash player uses only
1002        the difference between max_scope_stack and init_scope_stack, anyway.
1003      */
1004     for(t=0;t<file->classes->num;t++) {
1005         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1006         trait_list_t*traits = c->traits;
1007         if(c->constructor && c->constructor->body &&
1008            c->constructor->body->init_scope_depth < c->init_scope_depth) {
1009            c->constructor->body->init_scope_depth = c->init_scope_depth;
1010         }
1011         if(c->static_constructor && c->static_constructor->body &&
1012            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
1013            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
1014         }
1015         while(traits) {
1016             trait_t*trait = traits->trait;
1017             if(trait_is_method(trait) && trait->method->body) {
1018                 abc_method_body_t*body = trait->method->body;
1019                 if(body->init_scope_depth < c->init_scope_depth) {
1020                    body->init_scope_depth = c->init_scope_depth;
1021                 }
1022             }
1023             traits = traits->next;
1024         }
1025     }
1026
1027     for(t=0;t<file->methods->num;t++) {
1028         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1029         int n = 0;
1030         multiname_list_t*l = m->parameters;
1031         int num_params = list_length(m->parameters);
1032         swf_SetU30(tag, num_params);
1033         if(m->return_type)
1034             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1035         else
1036             swf_SetU30(tag, 0);
1037         int s;
1038         while(l) {
1039             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1040             l = l->next;
1041         }
1042         if(m->name) {
1043             swf_SetU30(tag, pool_register_string(pool, m->name));
1044         } else {
1045             swf_SetU30(tag, 0);
1046         }
1047
1048         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1049         if(m->optional_parameters)
1050             flags |= METHOD_HAS_OPTIONAL;
1051         if(m->body) {
1052             flags |= m->body->stats->flags;
1053         }
1054
1055         swf_SetU8(tag, flags);
1056         if(flags&METHOD_HAS_OPTIONAL) {
1057             swf_SetU30(tag, list_length(m->optional_parameters));
1058             constant_list_t*l = m->optional_parameters;
1059             while(l) {
1060                 int i = constant_get_index(pool, l->constant);
1061                 swf_SetU30(tag, i);
1062                 if(!i) {
1063                     swf_SetU8(tag, CONSTANT_NULL);
1064                 } else {
1065                     swf_SetU8(tag, l->constant->type);
1066                 }
1067                 l = l->next;
1068             }
1069         }
1070     }
1071
1072     /* write metadata */
1073     swf_SetU30(tag, file->metadata->num);
1074     for(t=0;t<file->metadata->num;t++) {
1075         const char*entry_name = array_getkey(file->metadata, t);
1076         swf_SetU30(tag, pool_register_string(pool, entry_name));
1077         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1078         swf_SetU30(tag, items->num);
1079         int s;
1080         for(s=0;s<items->num;s++) {
1081             int i1 = pool_register_string(pool, array_getkey(items, s));
1082             int i2 = pool_register_string(pool, array_getvalue(items, s));
1083             swf_SetU30(tag, i1);
1084             swf_SetU30(tag, i2);
1085         }
1086     }
1087
1088     swf_SetU30(tag, file->classes->num);
1089     for(t=0;t<file->classes->num;t++) {
1090         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1091
1092         int classname_index = pool_register_multiname(pool, c->classname);
1093         int superclass_index = pool_register_multiname(pool, c->superclass);
1094
1095         swf_SetU30(tag, classname_index);
1096         swf_SetU30(tag, superclass_index);
1097
1098         swf_SetU8(tag, c->flags); // flags
1099         if(c->flags&0x08) {
1100             int ns_index = pool_register_namespace(pool, c->protectedNS);
1101             swf_SetU30(tag, ns_index);
1102         }
1103
1104         swf_SetU30(tag, list_length(c->interfaces));
1105         multiname_list_t*interface= c->interfaces;
1106         while(interface) {
1107             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1108             interface = interface->next;
1109         }
1110
1111         assert(c->constructor);
1112         swf_SetU30(tag, c->constructor->index);
1113
1114         traits_write(pool, tag, c->traits);
1115     }
1116     for(t=0;t<file->classes->num;t++) {
1117         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1118         assert(c->static_constructor);
1119         swf_SetU30(tag, c->static_constructor->index);
1120
1121         traits_write(pool, tag, c->static_traits);
1122     }
1123
1124     swf_SetU30(tag, file->scripts->num);
1125     for(t=0;t<file->scripts->num;t++) {
1126         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1127         swf_SetU30(tag, s->method->index); //!=t!
1128         traits_write(pool, tag, s->traits);
1129     }
1130
1131     swf_SetU30(tag, file->method_bodies->num);
1132     for(t=0;t<file->method_bodies->num;t++) {
1133         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1134         abc_method_t*m = c->method;
1135         swf_SetU30(tag, m->index);
1136
1137         //swf_SetU30(tag, c->old.max_stack);
1138         //swf_SetU30(tag, c->old.local_count);
1139         //swf_SetU30(tag, c->old.init_scope_depth);
1140         //swf_SetU30(tag, c->old.max_scope_depth);
1141
1142         swf_SetU30(tag, c->stats->max_stack);
1143         int param_num = list_length(c->method->parameters)+1;
1144         if(c->method->flags&METHOD_NEED_REST)
1145             param_num++;
1146         if(param_num <= c->stats->local_count)
1147             swf_SetU30(tag, c->stats->local_count);
1148         else
1149             swf_SetU30(tag, param_num);
1150
1151         swf_SetU30(tag, c->init_scope_depth);
1152         swf_SetU30(tag, c->stats->max_scope_depth+
1153                         c->init_scope_depth);
1154
1155         code_write(tag, c->code, pool, file);
1156
1157         swf_SetU30(tag, list_length(c->exceptions));
1158         abc_exception_list_t*l = c->exceptions;
1159         while(l) {
1160             // warning: assumes "pos" in each code_t is up-to-date
1161             swf_SetU30(tag, l->abc_exception->from->pos);
1162             swf_SetU30(tag, l->abc_exception->to->pos);
1163             swf_SetU30(tag, l->abc_exception->target->pos);
1164             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1165             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1166             l = l->next;
1167         }
1168
1169         traits_write(pool, tag, c->traits);
1170     }
1171
1172     /* free temporary codestat data again. Notice: If we were to write this
1173        file multiple times, this can also be shifted to abc_file_free() */
1174     for(t=0;t<file->method_bodies->num;t++) {
1175         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1176         codestats_free(m->stats);m->stats=0;
1177     }
1178
1179     // --- start to write real tag --
1180
1181     tag = abctag;
1182
1183     if(tag->id == ST_DOABC) {
1184         swf_SetU32(tag, file->flags); // flags
1185         swf_SetString(tag, file->name);
1186     }
1187
1188     swf_SetU16(tag, 0x10); //version
1189     swf_SetU16(tag, 0x2e);
1190
1191     pool_write(pool, tag);
1192
1193     swf_SetBlock(tag, tmp->data, tmp->len);
1194
1195     swf_DeleteTag(0, tmp);
1196     return pool;
1197 }
1198
1199 void swf_WriteABC(TAG*abctag, void*code)
1200 {
1201     pool_t*pool = writeABC(abctag, code, 0);
1202     pool_optimize(pool);
1203     swf_ResetTag(abctag, abctag->id);
1204     writeABC(abctag, code, pool);
1205     pool_destroy(pool);
1206 }
1207
1208 void abc_file_free(abc_file_t*file)
1209 {
1210     if(!file)
1211         return;
1212     int t;
1213     if(file->metadata) {
1214         for(t=0;t<file->metadata->num;t++) {
1215             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1216             int s;
1217             for(s=0;s<items->num;s++) {
1218                 free(array_getvalue(items, s));
1219             }
1220             array_free(items);
1221         }
1222         array_free(file->metadata);file->metadata=0;
1223     }
1224
1225     for(t=0;t<file->methods->num;t++) {
1226         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1227
1228         multiname_list_t*param = m->parameters;
1229         while(param) {
1230             multiname_destroy(param->multiname);param->multiname=0;
1231             param = param->next;
1232         }
1233         list_free(m->parameters);m->parameters=0;
1234
1235         constant_list_t*opt = m->optional_parameters;
1236         while(opt) {
1237             constant_free(opt->constant);opt->constant=0;
1238             opt = opt->next;
1239         }
1240         list_free(m->optional_parameters);m->optional_parameters=0;
1241
1242         if(m->name) {
1243             free((void*)m->name);m->name=0;
1244         }
1245         if(m->return_type) {
1246             multiname_destroy(m->return_type);
1247         }
1248         free(m);
1249     }
1250     array_free(file->methods);file->methods=0;
1251
1252     for(t=0;t<file->classes->num;t++) {
1253         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1254         traits_free(cls->traits);cls->traits=0;
1255         traits_free(cls->static_traits);cls->static_traits=0;
1256
1257         if(cls->classname) {
1258             multiname_destroy(cls->classname);
1259         }
1260         if(cls->superclass) {
1261             multiname_destroy(cls->superclass);
1262         }
1263
1264         multiname_list_t*i = cls->interfaces;
1265         while(i) {
1266             multiname_destroy(i->multiname);i->multiname=0;
1267             i = i->next;
1268         }
1269         list_free(cls->interfaces);cls->interfaces=0;
1270
1271         if(cls->protectedNS) {
1272             namespace_destroy(cls->protectedNS);
1273         }
1274         free(cls);
1275     }
1276     array_free(file->classes);file->classes=0;
1277
1278     for(t=0;t<file->scripts->num;t++) {
1279         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1280         traits_free(s->traits);s->traits=0;
1281         free(s);
1282     }
1283     array_free(file->scripts);file->scripts=0;
1284
1285     for(t=0;t<file->method_bodies->num;t++) {
1286         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1287         code_free(body->code);body->code=0;
1288         traits_free(body->traits);body->traits=0;
1289
1290         abc_exception_list_t*ee = body->exceptions;
1291         while(ee) {
1292             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1293             e->from = e->to = e->target = 0;
1294             multiname_destroy(e->exc_type);e->exc_type=0;
1295             multiname_destroy(e->var_name);e->var_name=0;
1296             free(e);
1297             ee=ee->next;
1298         }
1299         list_free(body->exceptions);body->exceptions=0;
1300
1301         free(body);
1302     }
1303     array_free(file->method_bodies);file->method_bodies=0;
1304
1305     if(file->name) {
1306         free((void*)file->name);file->name=0;
1307     }
1308
1309     free(file);
1310 }
1311
1312 void swf_FreeABC(void*code)
1313 {
1314     abc_file_t*file= (abc_file_t*)code;
1315     abc_file_free(file);
1316 }
1317