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 abc_method_t* abc_method_new(abc_file_t*file, multiname_t*returntype, char body)
 161 {
 162     /* construct method object */
 163     NEW(abc_method_t,m);
 164     m->index = array_length(file->methods);
 165     array_append(file->methods, NO_KEY, m);
 166     m->return_type = returntype;
 167
 168     if(body) {
 169         /* construct code (method body) object */
 170         NEW(abc_method_body_t,c);
 171         array_append(file->method_bodies, NO_KEY, c);
 172         c->index = array_length(file->method_bodies);
 173         c->file = file;
 174         c->traits = list_new();
 175         c->code = 0;
 176
 177         /* crosslink the two objects */
 178         m->body = c;
 179         c->method = m;
 180     }
 181
 182     return m;
 183 }
 184
 185 abc_method_t* abc_class_getconstructor(abc_class_t*cls, multiname_t*returntype)
 186 {
 187     if(cls->constructor) {
 188         return cls->constructor;
 189     }
 190     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 191     cls->constructor = m;
 192     return m;
 193 }
 194
 195 abc_method_t* abc_class_getstaticconstructor(abc_class_t*cls, multiname_t*returntype)
 196 {
 197     if(cls->static_constructor) {
 198         return cls->static_constructor;
 199     }
 200     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 201     cls->static_constructor = m;
 202     return m;
 203 }
 204
 205 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 206 {
 207     trait_t*trait = malloc(sizeof(trait_t));
 208     memset(trait, 0, sizeof(trait_t));
 209     trait->kind = type&0x0f;
 210     trait->attributes = type&0xf0;
 211     trait->name = name;
 212     trait->data1 = data1;
 213     trait->data2 = data2;
 214     trait->value = v;
 215     return trait;
 216 }
 217
 218 trait_t*trait_new_member(trait_list_t**traits, multiname_t*type, multiname_t*name,constant_t*v)
 219 {
 220     int kind = TRAIT_SLOT;
 221     trait_t*trait = malloc(sizeof(trait_t));
 222     memset(trait, 0, sizeof(trait_t));
 223     trait->kind = kind&0x0f;
 224     trait->attributes = kind&0xf0;
 225     trait->name = name;
 226     trait->type_name = type;
 227
 228     trait->slot_id = list_length(*traits)+1;
 229     trait_list_t*l = *traits;
 230     list_append_(traits, trait);
 231     return trait;
 232 }
 233 trait_t*trait_new_method(trait_list_t**traits, multiname_t*name, abc_method_t*m)
 234 {
 235     int type = TRAIT_METHOD;
 236     trait_t*trait = malloc(sizeof(trait_t));
 237     memset(trait, 0, sizeof(trait_t));
 238     trait->kind = type&0x0f;
 239     trait->attributes = type&0xf0;
 240     trait->name = name;
 241     trait->method = m;
 242
 243     /* start assigning traits at position #1.
 244        Weird things happen when assigning slot 0- slot 0 and 1 seem
 245        to be identical */
 246     trait->slot_id = list_length(*traits)+1;
 247     list_append_(traits, trait);
 248     return trait;
 249 }
 250
 251 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 252 {
 253     abc_file_t*file = cls->file;
 254     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 255     m->trait = trait_new_method(&cls->traits, multiname_clone(name), m);
 256     return m;
 257 }
 258 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 259 {
 260     abc_file_t*file = cls->file;
 261     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 262     m->trait = trait_new_method(&cls->static_traits, multiname_clone(name), m);
 263     return m;
 264 }
 265
 266 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 267 {
 268     abc_file_t*file = cls->file;
 269     multiname_t*m_name = multiname_clone(name);
 270     multiname_t*m_type = multiname_clone(type);
 271     trait_t*t = trait_new_member(&cls->traits, m_type, m_name, 0);
 272     return t;
 273 }
 274 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 275 {
 276     abc_file_t*file = cls->file;
 277     multiname_t*m_name = multiname_clone(name);
 278     multiname_t*m_type = multiname_clone(type);
 279     trait_t*t = trait_new_member(&cls->static_traits, m_type, m_name, 0);
 280     return t;
 281 }
 282
 283
 284 trait_t* abc_class_find_slotid(abc_class_t*cls, int slotid)
 285 {
 286     trait_list_t*l;
 287     trait_t*t=0;
 288     for(l=cls->traits;l;l=l->next) {
 289         if(l->trait->slot_id==slotid) {
 290             t=l->trait;
 291             break;
 292         }
 293     }
 294     return t;
 295 }
 296
 297 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 298 {
 299     abc_file_t*file = code->file;
 300     multiname_t*m = multiname_fromstring(multiname);
 301     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 302     trait->cls = cls;
 303     list_append(code->traits, trait);
 304 }
 305
 306 /* notice: traits of a method (body) belonging to an init script
 307    and traits of the init script are *not* the same thing */
 308 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 309 {
 310     abc_file_t*file = script->file;
 311     multiname_t*m = multiname_clone(multiname);
 312     int slotid = list_length(script->traits)+1;
 313     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 314     trait->cls = cls;
 315     list_append(script->traits, trait);
 316     return slotid;
 317 }
 318
 319 abc_script_t* abc_initscript(abc_file_t*file)
 320 {
 321     abc_method_t*m = abc_method_new(file, 0, 1);
 322     abc_script_t* s = malloc(sizeof(abc_script_t));
 323     s->method = m;
 324     s->traits = list_new();
 325     s->file = file;
 326     array_append(file->scripts, NO_KEY, s);
 327     return s;
 328 }
 329
 330 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen);
 331
 332 static void dump_method(FILE*fo, const char*prefix,
 333                                  const char*attr,
 334                                  const char*type,
 335                                  const char*name,
 336                                  abc_method_t*m, abc_file_t*file, dict_t*methods_seen)
 337 {
 338     if(methods_seen)
 339         dict_put(methods_seen, m, 0);
 340
 341     char*return_type = 0;
 342     if(m->return_type)
 343         return_type = multiname_tostring(m->return_type);
 344     else
 345         return_type = strdup("void");
 346
 347     fprintf(fo, "%s", prefix);
 348     fprintf(fo, "%s %s ", attr, type);
 349     fprintf(fo, "%s %s=%s", return_type, name, m->name);
 350     params_dump(fo, m->parameters, m->optional_parameters);
 351     fprintf(fo, "(%d params, %d optional)\n", list_length(m->parameters), list_length(m->optional_parameters));
 352
 353     free(return_type);return_type=0;
 354
 355     abc_method_body_t*c = m->body;
 356     if(!c) {
 357         return;
 358     }
 359
 360     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 361             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 362             c->old.max_scope_depth);
 363
 364
 365     int flags = c->method->flags;
 366     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 367     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 368     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 369     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 370     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 371     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 372     if(flags) fprintf(fo, " %02x", flags);
 373     fprintf(fo, "]");
 374
 375     if(m->trait) {
 376         fprintf(fo, " slot:%d", m->trait->slot_id);
 377     }
 378     fprintf(fo, "\n");
 379
 380
 381     char prefix2[80];
 382     sprintf(prefix2, "%s    ", prefix);
 383     if(c->traits)
 384         traits_dump(fo, prefix, c->traits, file, methods_seen);
 385     fprintf(fo, "%s{\n", prefix);
 386     code_dump2(c->code, c->exceptions, file, prefix2, fo);
 387     fprintf(fo, "%s}\n\n", prefix);
 388 }
 389
 390 static void traits_free(trait_list_t*traits)
 391 {
 392     trait_list_t*t = traits;
 393     while(t) {
 394         if(t->trait->name) {
 395             multiname_destroy(t->trait->name);t->trait->name = 0;
 396         }
 397         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 398             multiname_destroy(t->trait->type_name);
 399         }
 400         if(t->trait->value) {
 401             constant_free(t->trait->value);t->trait->value = 0;
 402         }
 403         free(t->trait);t->trait = 0;
 404         t = t->next;
 405     }
 406     list_free(traits);
 407 }
 408
 409 static char trait_is_method(trait_t*trait)
 410 {
 411     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 412             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 413 }
 414
 415 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 416 {
 417     int num_traits = swf_GetU30(tag);
 418     trait_list_t*traits = list_new();
 419     int t;
 420     if(num_traits) {
 421         DEBUG printf("%d traits\n", num_traits);
 422     }
 423
 424     for(t=0;t<num_traits;t++) {
 425         NEW(trait_t,trait);
 426         list_append(traits, trait);
 427
 428         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 429
 430         const char*name = 0;
 431         DEBUG name = multiname_tostring(trait->name);
 432         U8 kind = swf_GetU8(tag);
 433         U8 attributes = kind&0xf0;
 434         kind&=0x0f;
 435         trait->kind = kind;
 436         trait->attributes = attributes;
 437         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 438         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 439             trait->disp_id = swf_GetU30(tag);
 440             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 441             trait->method->trait = trait;
 442             DEBUG printf("  method/getter/setter\n");
 443         } else if(kind == TRAIT_FUNCTION) { // function
 444             trait->slot_id =  swf_GetU30(tag);
 445             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 446             trait->method->trait = trait;
 447         } else if(kind == TRAIT_CLASS) { // class
 448             trait->slot_id = swf_GetU30(tag);
 449             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 450             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 451         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 452             trait->slot_id = swf_GetU30(tag);
 453             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 454             int vindex = swf_GetU30(tag);
 455             if(vindex) {
 456                 int vkind = swf_GetU8(tag);
 457                 trait->value = constant_fromindex(pool, vindex, vkind);
 458             }
 459             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 460         } else {
 461             fprintf(stderr, "Can't parse trait type %d\n", kind);
 462         }
 463         if(attributes&0x40) {
 464             int num = swf_GetU30(tag);
 465             int s;
 466             for(s=0;s<num;s++) {
 467                 swf_GetU30(tag); //index into metadata array
 468             }
 469         }
 470     }
 471     return traits;
 472 }
 473
 474 void traits_skip(TAG*tag)
 475 {
 476     int num_traits = swf_GetU30(tag);
 477     int t;
 478     for(t=0;t<num_traits;t++) {
 479         swf_GetU30(tag);
 480         U8 kind = swf_GetU8(tag);
 481         U8 attributes = kind&0xf0;
 482         kind&=0x0f;
 483         swf_GetU30(tag);
 484         swf_GetU30(tag);
 485         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 486             if(swf_GetU30(tag)) swf_GetU8(tag);
 487         } else if(kind>TRAIT_CONST) {
 488             fprintf(stderr, "Can't parse trait type %d\n", kind);
 489         }
 490         if(attributes&0x40) {
 491             int s, num = swf_GetU30(tag);
 492             for(s=0;s<num;s++) swf_GetU30(tag);
 493         }
 494     }
 495 }
 496
 497
 498 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 499 {
 500     if(!traits) {
 501         swf_SetU30(tag, 0);
 502         return;
 503     }
 504     swf_SetU30(tag, list_length(traits));
 505     int s;
 506
 507     while(traits) {
 508         trait_t*trait = traits->trait;
 509
 510         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 511         swf_SetU8(tag, trait->kind|trait->attributes);
 512
 513         swf_SetU30(tag, trait->data1);
 514
 515         if(trait->kind == TRAIT_CLASS) {
 516             swf_SetU30(tag, trait->cls->index);
 517         } else if(trait->kind == TRAIT_GETTER ||
 518                   trait->kind == TRAIT_SETTER ||
 519                   trait->kind == TRAIT_METHOD) {
 520             swf_SetU30(tag, trait->method->index);
 521         } else if(trait->kind == TRAIT_SLOT ||
 522                   trait->kind == TRAIT_CONST) {
 523             int index = pool_register_multiname(pool, trait->type_name);
 524             swf_SetU30(tag, index);
 525         } else  {
 526             swf_SetU30(tag, trait->data2);
 527         }
 528
 529         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 530             int vindex = constant_get_index(pool, trait->value);
 531             swf_SetU30(tag, vindex);
 532             if(vindex) {
 533                 swf_SetU8(tag, trait->value->type);
 534             }
 535         }
 536         if(trait->attributes&0x40) {
 537             // metadata
 538             swf_SetU30(tag, 0);
 539         }
 540         traits = traits->next;
 541     }
 542 }
 543
 544
 545 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen)
 546 {
 547     int t;
 548     while(traits) {
 549         trait_t*trait = traits->trait;
 550         char*name = multiname_tostring(trait->name);
 551         U8 kind = trait->kind;
 552         U8 attributes = trait->attributes;
 553
 554         char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
 555         char* type = "";
 556         if(a==TRAIT_ATTR_FINAL)
 557             type = "final ";
 558         else if(a==TRAIT_ATTR_OVERRIDE)
 559             type = "override ";
 560         else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
 561             type = "final override ";
 562
 563         if(attributes&TRAIT_ATTR_METADATA)
 564             fprintf(fo, "<metadata>");
 565
 566         if(kind == TRAIT_METHOD) {
 567             abc_method_t*m = trait->method;
 568             dump_method(fo, prefix, type, "method", name, m, file, methods_seen);
 569         } else if(kind == TRAIT_GETTER) {
 570             abc_method_t*m = trait->method;
 571             dump_method(fo, prefix, type, "getter", name, m, file, methods_seen);
 572         } else if(kind == TRAIT_SETTER) {
 573             abc_method_t*m = trait->method;
 574             dump_method(fo, prefix, type, "setter", name, m, file, methods_seen);
 575         } else if(kind == TRAIT_FUNCTION) { // function
 576             abc_method_t*m = trait->method;
 577             dump_method(fo, prefix, type, "function", name, m, file, methods_seen);
 578         } else if(kind == TRAIT_CLASS) { // class
 579             abc_class_t*cls = trait->cls;
 580             if(!cls) {
 581                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 582             } else {
 583                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 584             }
 585         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 586             int slot_id = trait->slot_id;
 587             char*type_name = multiname_tostring(trait->type_name);
 588             char*value = constant_tostring(trait->value);
 589             fprintf(fo, "%sslot %d: %s %s:%s %s %s\n", prefix, trait->slot_id,
 590                     kind==TRAIT_CONST?"const":"var", name, type_name,
 591                     value?"=":"", value?value:"");
 592             if(value) free(value);
 593             free(type_name);
 594         } else {
 595             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 596         }
 597         free(name);
 598         traits=traits->next;
 599     }
 600 }
 601
 602 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 603 {
 604     abc_file_t* file = (abc_file_t*)code;
 605
 606     if(file->name) {
 607         fprintf(fo, "%s#\n", prefix);
 608         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 609         fprintf(fo, "%s#\n", prefix);
 610     }
 611
 612     int t;
 613     for(t=0;t<file->metadata->num;t++) {
 614         const char*entry_name = array_getkey(file->metadata, t);
 615         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 616         int s;
 617         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 618         for(s=0;s<items->num;s++) {
 619             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 620         }
 621         fprintf(fo, "%s#\n", prefix);
 622     }
 623
 624     dict_t*methods_seen = dict_new2(&ptr_type);
 625     for(t=0;t<file->classes->num;t++) {
 626         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 627         char prefix2[80];
 628         sprintf(prefix2, "%s    ", prefix);
 629
 630         fprintf(fo, "%s", prefix);
 631         if(cls->flags&1) fprintf(fo, "sealed ");
 632         if(cls->flags&2) fprintf(fo, "final ");
 633         if(cls->flags&4) fprintf(fo, "interface ");
 634         if(cls->flags&8) {
 635             char*s = namespace_tostring(cls->protectedNS);
 636             fprintf(fo, "protectedNS(%s) ", s);
 637             free(s);
 638         }
 639
 640         char*classname = multiname_tostring(cls->classname);
 641         fprintf(fo, "class %s", classname);
 642         free(classname);
 643         if(cls->superclass) {
 644             char*supername = multiname_tostring(cls->superclass);
 645             fprintf(fo, " extends %s", supername);
 646             free(supername);
 647             multiname_list_t*ilist = cls->interfaces;
 648             if(ilist)
 649                 fprintf(fo, " implements");
 650             while(ilist) {
 651                 char*s = multiname_tostring(ilist->multiname);
 652                 fprintf(fo, " %s", s);
 653                 free(s);
 654                 ilist = ilist->next;
 655             }
 656             ilist->next;
 657         }
 658         if(cls->flags&0xf0)
 659             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 660         fprintf(fo, "%s{\n", prefix);
 661
 662         dict_put(methods_seen, cls->static_constructor, 0);
 663         dict_put(methods_seen, cls->constructor, 0);
 664
 665         if(cls->static_constructor) {
 666             dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file, methods_seen);
 667         }
 668         traits_dump(fo, prefix2, cls->static_traits, file, methods_seen);
 669
 670         char*n = multiname_tostring(cls->classname);
 671         if(cls->constructor)
 672             dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file, methods_seen);
 673         free(n);
 674         traits_dump(fo, prefix2,cls->traits, file, methods_seen);
 675         fprintf(fo, "%s}\n", prefix);
 676     }
 677     fprintf(fo, "%s\n", prefix);
 678
 679     for(t=0;t<file->scripts->num;t++) {
 680         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 681         dump_method(fo, prefix, "", "initmethod", "init", s->method, file, methods_seen);
 682         traits_dump(fo, prefix, s->traits, file, methods_seen);
 683     }
 684
 685     char extra=0;
 686     for(t=0;t<file->methods->num;t++) {
 687         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 688         if(!dict_contains(methods_seen, m)) {
 689             if(!extra) {
 690                 extra=1;
 691                 fprintf(fo, "\n");
 692                 fprintf(fo, "%s//internal (non-class non-script) methods:\n", prefix);
 693             }
 694             char name[18];
 695             sprintf(name, "%08x ", m->index);
 696             dump_method(fo, prefix, "", "internalmethod", name, m, file, methods_seen);
 697         }
 698     }
 699     dict_destroy(methods_seen);
 700
 701     return file;
 702 }
 703
 704 void* swf_ReadABC(TAG*tag)
 705 {
 706     abc_file_t* file = abc_file_new();
 707     pool_t*pool = pool_new();
 708
 709     swf_SetTagPos(tag, 0);
 710     int t;
 711     if(tag->id == ST_DOABC) {
 712         U32 abcflags = swf_GetU32(tag);
 713         DEBUG printf("flags=%08x\n", abcflags);
 714         char*name= swf_GetString(tag);
 715         file->name = (name&&name[0])?strdup(name):0;
 716     }
 717     U32 version = swf_GetU32(tag);
 718     if(version!=0x002e0010) {
 719         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 720     }
 721
 722     pool_read(pool, tag);
 723
 724     int num_methods = swf_GetU30(tag);
 725     DEBUG printf("%d methods\n", num_methods);
 726     for(t=0;t<num_methods;t++) {
 727         NEW(abc_method_t,m);
 728         int param_count = swf_GetU30(tag);
 729         int return_type_index = swf_GetU30(tag);
 730         if(return_type_index)
 731             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 732         else
 733             m->return_type = 0;
 734
 735         int s;
 736         for(s=0;s<param_count;s++) {
 737             int type_index = swf_GetU30(tag);
 738
 739             /* type_index might be 0 ("*") */
 740             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 741             list_append(m->parameters, param);
 742         }
 743
 744         int namenr = swf_GetU30(tag);
 745         if(namenr)
 746             m->name = strdup(pool_lookup_string(pool, namenr));
 747         else
 748             m->name = strdup("");
 749
 750         m->flags = swf_GetU8(tag);
 751
 752         DEBUG printf("method %d) %s ", m->name);
 753         DEBUG params_dump(stdout, m->parameters, m->optional_parameters);
 754         DEBUG printf("flags=%02x\n", t, m->flags);
 755
 756         if(m->flags&0x08) {
 757             m->optional_parameters = list_new();
 758             int num = swf_GetU30(tag);
 759             int s;
 760             for(s=0;s<num;s++) {
 761                 int vindex = swf_GetU30(tag);
 762                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 763                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 764                 list_append(m->optional_parameters, c);
 765
 766             }
 767         }
 768         if(m->flags&0x80) {
 769             /* debug information- not used by avm2 */
 770             multiname_list_t*l = m->parameters;
 771             while(l) {
 772                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 773                 l = l->next;
 774             }
 775         }
 776         m->index = array_length(file->methods);
 777         array_append(file->methods, NO_KEY, m);
 778     }
 779
 780     parse_metadata(tag, file, pool);
 781
 782     /* skip classes, and scripts for now, and do the real parsing later */
 783     int num_classes = swf_GetU30(tag);
 784     int classes_pos = tag->pos;
 785     DEBUG printf("%d classes\n", num_classes);
 786     for(t=0;t<num_classes;t++) {
 787         abc_class_t*cls = malloc(sizeof(abc_class_t));
 788         memset(cls, 0, sizeof(abc_class_t));
 789
 790         swf_GetU30(tag); //classname
 791         swf_GetU30(tag); //supername
 792
 793         array_append(file->classes, NO_KEY, cls);
 794
 795         cls->flags = swf_GetU8(tag);
 796         DEBUG printf("class %d %02x\n", t, cls->flags);
 797         if(cls->flags&8)
 798             swf_GetU30(tag); //protectedNS
 799         int s;
 800         int inum = swf_GetU30(tag); //interface count
 801         cls->interfaces = 0;
 802         for(s=0;s<inum;s++) {
 803             int interface_index = swf_GetU30(tag);
 804             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 805             list_append(cls->interfaces, m);
 806             DEBUG printf("  class %d interface: %s\n", t, m->name);
 807         }
 808
 809         int iinit = swf_GetU30(tag); //iinit
 810         DEBUG printf("--iinit-->%d\n", iinit);
 811         traits_skip(tag);
 812     }
 813     for(t=0;t<num_classes;t++) {
 814         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 815         int cinit = swf_GetU30(tag);
 816         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 817         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 818         traits_skip(tag);
 819     }
 820     int num_scripts = swf_GetU30(tag);
 821     DEBUG printf("%d scripts\n", num_scripts);
 822     for(t=0;t<num_scripts;t++) {
 823         int init = swf_GetU30(tag);
 824         traits_skip(tag);
 825     }
 826
 827     int num_method_bodies = swf_GetU30(tag);
 828     DEBUG printf("%d method bodies\n", num_method_bodies);
 829     for(t=0;t<num_method_bodies;t++) {
 830         int methodnr = swf_GetU30(tag);
 831         if(methodnr >= file->methods->num) {
 832             printf("Invalid method number: %d\n", methodnr);
 833             return 0;
 834         }
 835         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 836         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 837         memset(c, 0, sizeof(abc_method_body_t));
 838         c->old.max_stack = swf_GetU30(tag);
 839         c->old.local_count = swf_GetU30(tag);
 840         c->old.init_scope_depth = swf_GetU30(tag);
 841         c->old.max_scope_depth = swf_GetU30(tag);
 842
 843         c->init_scope_depth = c->old.init_scope_depth;
 844         int code_length = swf_GetU30(tag);
 845
 846         c->method = m;
 847         m->body = c;
 848
 849         int pos = tag->pos + code_length;
 850         codelookup_t*codelookup = 0;
 851         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 852         tag->pos = pos;
 853
 854         int exception_count = swf_GetU30(tag);
 855         int s;
 856         c->exceptions = list_new();
 857         for(s=0;s<exception_count;s++) {
 858             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 859
 860             e->from = code_atposition(codelookup, swf_GetU30(tag));
 861             e->to = code_atposition(codelookup, swf_GetU30(tag));
 862             e->target = code_atposition(codelookup, swf_GetU30(tag));
 863
 864             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 865             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 866             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 867             //if(e->var_name) e->var_name = strdup(e->var_name);
 868             list_append(c->exceptions, e);
 869         }
 870         codelookup_free(codelookup);
 871         c->traits = traits_parse(tag, pool, file);
 872
 873         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 874
 875         array_append(file->method_bodies, NO_KEY, c);
 876     }
 877     if(tag->len - tag->pos) {
 878         fprintf(stderr, "ERROR: %d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 879         return 0;
 880     }
 881
 882     swf_SetTagPos(tag, classes_pos);
 883     for(t=0;t<num_classes;t++) {
 884         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 885
 886         int classname_index = swf_GetU30(tag);
 887         int superclass_index = swf_GetU30(tag);
 888         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 889         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 890         cls->flags = swf_GetU8(tag);
 891         const char*ns = "";
 892         if(cls->flags&8) {
 893             int ns_index = swf_GetU30(tag);
 894             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 895         }
 896
 897         int num_interfaces = swf_GetU30(tag); //interface count
 898         int s;
 899         for(s=0;s<num_interfaces;s++) {
 900             swf_GetU30(tag);
 901         }
 902         int iinit = swf_GetU30(tag);
 903         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 904         cls->traits = traits_parse(tag, pool, file);
 905     }
 906     for(t=0;t<num_classes;t++) {
 907         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 908         /* SKIP */
 909         swf_GetU30(tag); // cindex
 910         cls->static_traits = traits_parse(tag, pool, file);
 911     }
 912     int num_scripts2 = swf_GetU30(tag);
 913     for(t=0;t<num_scripts2;t++) {
 914         int init = swf_GetU30(tag);
 915         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 916
 917         abc_script_t*s = malloc(sizeof(abc_script_t));
 918         memset(s, 0, sizeof(abc_script_t));
 919         s->method = m;
 920         s->traits = traits_parse(tag, pool, file);
 921         array_append(file->scripts, NO_KEY, s);
 922     }
 923
 924     pool_destroy(pool);
 925     return file;
 926 }
 927
 928 static pool_t*writeABC(TAG*abctag, void*code, pool_t*pool)
 929 {
 930     abc_file_t*file = (abc_file_t*)code;
 931     if(!pool)
 932         pool = pool_new();
 933
 934     TAG*tmp = swf_InsertTag(0,0);
 935     TAG*tag = tmp;
 936     int t;
 937
 938     /* add method bodies where needed */
 939     for(t=0;t<file->classes->num;t++) {
 940         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 941         if(!c->constructor) {
 942             if(!(c->flags&CLASS_INTERFACE)) {
 943                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 944                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 945                 // don't bother to set m->index
 946                 body->method = m; m->body = body;
 947                 __ returnvoid(body);
 948                 c->constructor = m;
 949             } else {
 950                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 951                 c->constructor = m;
 952             }
 953         }
 954         if(!c->static_constructor) {
 955             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 956             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 957             body->method = m; m->body = body;
 958             __ returnvoid(body);
 959             c->static_constructor = m;
 960         }
 961     }
 962
 963
 964     swf_SetU30(tag, file->methods->num);
 965     /* enumerate classes, methods and method bodies */
 966     for(t=0;t<file->methods->num;t++) {
 967         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 968         m->index = t;
 969     }
 970     for(t=0;t<file->classes->num;t++) {
 971         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 972         c->index = t;
 973     }
 974     for(t=0;t<file->method_bodies->num;t++) {
 975         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 976         m->index = t;
 977     }
 978
 979     /* generate code statistics */
 980     for(t=0;t<file->method_bodies->num;t++) {
 981         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 982         m->stats = code_get_statistics(m->code, m->exceptions);
 983     }
 984
 985     /* level init scope depths: The init scope depth of a method is
 986        always as least as high as the init scope depth of it's surrounding
 987        class.
 988        A method has it's own init_scope_depth if it's an init method
 989        (then its init scope depth is zero), or if it's used as a closure.
 990
 991        Not sure yet what to do with methods which are used at different
 992        locations- e.g. the nullmethod is used all over the place.
 993        EDIT: flashplayer doesn't allow this anyway- a method can only
 994              be used once
 995
 996        Also, I have the strong suspicion that flash player uses only
 997        the difference between max_scope_stack and init_scope_stack, anyway.
 998      */
 999     for(t=0;t<file->classes->num;t++) {
1000         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1001         trait_list_t*traits = c->traits;
1002         if(c->constructor && c->constructor->body &&
1003            c->constructor->body->init_scope_depth < c->init_scope_depth) {
1004            c->constructor->body->init_scope_depth = c->init_scope_depth;
1005         }
1006         if(c->static_constructor && c->static_constructor->body &&
1007            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
1008            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
1009         }
1010         while(traits) {
1011             trait_t*trait = traits->trait;
1012             if(trait_is_method(trait) && trait->method->body) {
1013                 abc_method_body_t*body = trait->method->body;
1014                 if(body->init_scope_depth < c->init_scope_depth) {
1015                    body->init_scope_depth = c->init_scope_depth;
1016                 }
1017             }
1018             traits = traits->next;
1019         }
1020     }
1021
1022     for(t=0;t<file->methods->num;t++) {
1023         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1024         int n = 0;
1025         multiname_list_t*l = m->parameters;
1026         int num_params = list_length(m->parameters);
1027         swf_SetU30(tag, num_params);
1028         if(m->return_type)
1029             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1030         else
1031             swf_SetU30(tag, 0);
1032         int s;
1033         while(l) {
1034             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1035             l = l->next;
1036         }
1037         if(m->name) {
1038             swf_SetU30(tag, pool_register_string(pool, m->name));
1039         } else {
1040             swf_SetU30(tag, 0);
1041         }
1042
1043         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1044         if(m->optional_parameters)
1045             flags |= METHOD_HAS_OPTIONAL;
1046         if(m->body) {
1047             flags |= m->body->stats->flags;
1048         }
1049
1050         swf_SetU8(tag, flags);
1051         if(flags&METHOD_HAS_OPTIONAL) {
1052             swf_SetU30(tag, list_length(m->optional_parameters));
1053             constant_list_t*l = m->optional_parameters;
1054             while(l) {
1055                 int i = constant_get_index(pool, l->constant);
1056                 swf_SetU30(tag, i);
1057                 if(!i) {
1058                     swf_SetU8(tag, CONSTANT_NULL);
1059                 } else {
1060                     swf_SetU8(tag, l->constant->type);
1061                 }
1062                 l = l->next;
1063             }
1064         }
1065     }
1066
1067     /* write metadata */
1068     swf_SetU30(tag, file->metadata->num);
1069     for(t=0;t<file->metadata->num;t++) {
1070         const char*entry_name = array_getkey(file->metadata, t);
1071         swf_SetU30(tag, pool_register_string(pool, entry_name));
1072         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1073         swf_SetU30(tag, items->num);
1074         int s;
1075         for(s=0;s<items->num;s++) {
1076             int i1 = pool_register_string(pool, array_getkey(items, s));
1077             int i2 = pool_register_string(pool, array_getvalue(items, s));
1078             swf_SetU30(tag, i1);
1079             swf_SetU30(tag, i2);
1080         }
1081     }
1082
1083     swf_SetU30(tag, file->classes->num);
1084     for(t=0;t<file->classes->num;t++) {
1085         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1086
1087         int classname_index = pool_register_multiname(pool, c->classname);
1088         int superclass_index = pool_register_multiname(pool, c->superclass);
1089
1090         swf_SetU30(tag, classname_index);
1091         swf_SetU30(tag, superclass_index);
1092
1093         swf_SetU8(tag, c->flags); // flags
1094         if(c->flags&0x08) {
1095             int ns_index = pool_register_namespace(pool, c->protectedNS);
1096             swf_SetU30(tag, ns_index);
1097         }
1098
1099         swf_SetU30(tag, list_length(c->interfaces));
1100         multiname_list_t*interface= c->interfaces;
1101         while(interface) {
1102             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1103             interface = interface->next;
1104         }
1105
1106         assert(c->constructor);
1107         swf_SetU30(tag, c->constructor->index);
1108
1109         traits_write(pool, tag, c->traits);
1110     }
1111     for(t=0;t<file->classes->num;t++) {
1112         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1113         assert(c->static_constructor);
1114         swf_SetU30(tag, c->static_constructor->index);
1115
1116         traits_write(pool, tag, c->static_traits);
1117     }
1118
1119     swf_SetU30(tag, file->scripts->num);
1120     for(t=0;t<file->scripts->num;t++) {
1121         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1122         swf_SetU30(tag, s->method->index); //!=t!
1123         traits_write(pool, tag, s->traits);
1124     }
1125
1126     swf_SetU30(tag, file->method_bodies->num);
1127     for(t=0;t<file->method_bodies->num;t++) {
1128         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1129         abc_method_t*m = c->method;
1130         swf_SetU30(tag, m->index);
1131
1132         //swf_SetU30(tag, c->old.max_stack);
1133         //swf_SetU30(tag, c->old.local_count);
1134         //swf_SetU30(tag, c->old.init_scope_depth);
1135         //swf_SetU30(tag, c->old.max_scope_depth);
1136
1137         swf_SetU30(tag, c->stats->max_stack);
1138         int param_num = list_length(c->method->parameters)+1;
1139         if(c->method->flags&METHOD_NEED_REST)
1140             param_num++;
1141         if(param_num <= c->stats->local_count)
1142             swf_SetU30(tag, c->stats->local_count);
1143         else
1144             swf_SetU30(tag, param_num);
1145
1146         swf_SetU30(tag, c->init_scope_depth);
1147         swf_SetU30(tag, c->stats->max_scope_depth+
1148                         c->init_scope_depth);
1149
1150         code_write(tag, c->code, pool, file);
1151
1152         swf_SetU30(tag, list_length(c->exceptions));
1153         abc_exception_list_t*l = c->exceptions;
1154         while(l) {
1155             // warning: assumes "pos" in each code_t is up-to-date
1156             swf_SetU30(tag, l->abc_exception->from->pos);
1157             swf_SetU30(tag, l->abc_exception->to->pos);
1158             swf_SetU30(tag, l->abc_exception->target->pos);
1159             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1160             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1161             l = l->next;
1162         }
1163
1164         traits_write(pool, tag, c->traits);
1165     }
1166
1167     /* free temporary codestat data again. Notice: If we were to write this
1168        file multiple times, this can also be shifted to abc_file_free() */
1169     for(t=0;t<file->method_bodies->num;t++) {
1170         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1171         codestats_free(m->stats);m->stats=0;
1172     }
1173
1174     // --- start to write real tag --
1175
1176     tag = abctag;
1177
1178     if(tag->id == ST_DOABC) {
1179         swf_SetU32(tag, file->flags); // flags
1180         swf_SetString(tag, file->name);
1181     }
1182
1183     swf_SetU16(tag, 0x10); //version
1184     swf_SetU16(tag, 0x2e);
1185
1186     pool_write(pool, tag);
1187
1188     swf_SetBlock(tag, tmp->data, tmp->len);
1189
1190     swf_DeleteTag(0, tmp);
1191     return pool;
1192 }
1193
1194 void swf_WriteABC(TAG*abctag, void*code)
1195 {
1196     pool_t*pool = writeABC(abctag, code, 0);
1197     pool_optimize(pool);
1198     swf_ResetTag(abctag, abctag->id);
1199     writeABC(abctag, code, pool);
1200     pool_destroy(pool);
1201 }
1202
1203 void abc_file_free(abc_file_t*file)
1204 {
1205     if(!file)
1206         return;
1207     int t;
1208     if(file->metadata) {
1209         for(t=0;t<file->metadata->num;t++) {
1210             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1211             int s;
1212             for(s=0;s<items->num;s++) {
1213                 free(array_getvalue(items, s));
1214             }
1215             array_free(items);
1216         }
1217         array_free(file->metadata);file->metadata=0;
1218     }
1219
1220     for(t=0;t<file->methods->num;t++) {
1221         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1222
1223         multiname_list_t*param = m->parameters;
1224         while(param) {
1225             multiname_destroy(param->multiname);param->multiname=0;
1226             param = param->next;
1227         }
1228         list_free(m->parameters);m->parameters=0;
1229
1230         constant_list_t*opt = m->optional_parameters;
1231         while(opt) {
1232             constant_free(opt->constant);opt->constant=0;
1233             opt = opt->next;
1234         }
1235         list_free(m->optional_parameters);m->optional_parameters=0;
1236
1237         if(m->name) {
1238             free((void*)m->name);m->name=0;
1239         }
1240         if(m->return_type) {
1241             multiname_destroy(m->return_type);
1242         }
1243         free(m);
1244     }
1245     array_free(file->methods);file->methods=0;
1246
1247     for(t=0;t<file->classes->num;t++) {
1248         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1249         traits_free(cls->traits);cls->traits=0;
1250         traits_free(cls->static_traits);cls->static_traits=0;
1251
1252         if(cls->classname) {
1253             multiname_destroy(cls->classname);
1254         }
1255         if(cls->superclass) {
1256             multiname_destroy(cls->superclass);
1257         }
1258
1259         multiname_list_t*i = cls->interfaces;
1260         while(i) {
1261             multiname_destroy(i->multiname);i->multiname=0;
1262             i = i->next;
1263         }
1264         list_free(cls->interfaces);cls->interfaces=0;
1265
1266         if(cls->protectedNS) {
1267             namespace_destroy(cls->protectedNS);
1268         }
1269         free(cls);
1270     }
1271     array_free(file->classes);file->classes=0;
1272
1273     for(t=0;t<file->scripts->num;t++) {
1274         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1275         traits_free(s->traits);s->traits=0;
1276         free(s);
1277     }
1278     array_free(file->scripts);file->scripts=0;
1279
1280     for(t=0;t<file->method_bodies->num;t++) {
1281         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1282         code_free(body->code);body->code=0;
1283         traits_free(body->traits);body->traits=0;
1284
1285         abc_exception_list_t*ee = body->exceptions;
1286         while(ee) {
1287             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1288             e->from = e->to = e->target = 0;
1289             multiname_destroy(e->exc_type);e->exc_type=0;
1290             multiname_destroy(e->var_name);e->var_name=0;
1291             free(e);
1292             ee=ee->next;
1293         }
1294         list_free(body->exceptions);body->exceptions=0;
1295
1296         free(body);
1297     }
1298     array_free(file->method_bodies);file->method_bodies=0;
1299
1300     if(file->name) {
1301         free((void*)file->name);file->name=0;
1302     }
1303
1304     free(file);
1305 }
1306
1307 void swf_FreeABC(void*code)
1308 {
1309     abc_file_t*file= (abc_file_t*)code;
1310     abc_file_free(file);
1311 }
1312