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     if(file)
 123         array_append(file->classes, NO_KEY, c);
 124
 125     c->file = file;
 126     c->classname = multiname_clone(classname);
 127     c->superclass = multiname_clone(superclass);
 128     c->flags = 0;
 129     c->constructor = 0;
 130     c->static_constructor = 0;
 131     c->traits = list_new();
 132     return c;
 133 }
 134 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 135 {
 136     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 137 }
 138
 139 void abc_class_sealed(abc_class_t*c)
 140 {
 141     c->flags |= CLASS_SEALED;
 142 }
 143 void abc_class_final(abc_class_t*c)
 144 {
 145     c->flags |= CLASS_FINAL;
 146 }
 147 void abc_class_interface(abc_class_t*c)
 148 {
 149     c->flags |= CLASS_INTERFACE;
 150 }
 151 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 152 {
 153     c->protectedNS = namespace_new_protected(namespace);
 154     c->flags |= CLASS_PROTECTED_NS;
 155 }
 156 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 157 {
 158     list_append(c->interfaces, multiname_clone(interface));
 159 }
 160
 161 void abc_method_init(abc_method_t*m, abc_file_t*file, multiname_t*returntype, char body)
 162 {
 163     /* construct method object */
 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 abc_method_t* abc_method_new(abc_file_t*file, multiname_t*returntype, char body)
 183 {
 184     NEW(abc_method_t,m);
 185     abc_method_init(m, file, returntype, body);
 186     return m;
 187 }
 188
 189 abc_method_t* abc_class_getconstructor(abc_class_t*cls, multiname_t*returntype)
 190 {
 191     if(cls->constructor) {
 192         return cls->constructor;
 193     }
 194     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 195     cls->constructor = m;
 196     return m;
 197 }
 198
 199 abc_method_t* abc_class_getstaticconstructor(abc_class_t*cls, multiname_t*returntype)
 200 {
 201     if(cls->static_constructor) {
 202         return cls->static_constructor;
 203     }
 204     abc_method_t* m = abc_method_new(cls->file, returntype, 1);
 205     cls->static_constructor = m;
 206     return m;
 207 }
 208
 209 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 210 {
 211     trait_t*trait = malloc(sizeof(trait_t));
 212     memset(trait, 0, sizeof(trait_t));
 213     trait->kind = type&0x0f;
 214     trait->attributes = type&0xf0;
 215     trait->name = name;
 216     trait->data1 = data1;
 217     trait->data2 = data2;
 218     trait->value = v;
 219     return trait;
 220 }
 221
 222 trait_t*trait_new_member(trait_list_t**traits, multiname_t*type, multiname_t*name,constant_t*v)
 223 {
 224     int kind = TRAIT_SLOT;
 225     trait_t*trait = malloc(sizeof(trait_t));
 226     memset(trait, 0, sizeof(trait_t));
 227     trait->kind = kind&0x0f;
 228     trait->attributes = kind&0xf0;
 229     trait->name = name;
 230     trait->type_name = type;
 231
 232     trait->slot_id = list_length(*traits)+1;
 233     trait_list_t*l = *traits;
 234     list_append_(traits, trait);
 235     return trait;
 236 }
 237 trait_t*trait_new_method(trait_list_t**traits, multiname_t*name, abc_method_t*m)
 238 {
 239     int type = TRAIT_METHOD;
 240     trait_t*trait = malloc(sizeof(trait_t));
 241     memset(trait, 0, sizeof(trait_t));
 242     trait->kind = type&0x0f;
 243     trait->attributes = type&0xf0;
 244     trait->name = name;
 245     trait->method = m;
 246
 247     /* start assigning traits at position #1.
 248        Weird things happen when assigning slot 0- slot 0 and 1 seem
 249        to be identical */
 250     trait->slot_id = list_length(*traits)+1;
 251     list_append_(traits, trait);
 252     return trait;
 253 }
 254
 255 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 256 {
 257     abc_file_t*file = cls->file;
 258     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 259     m->trait = trait_new_method(&cls->traits, multiname_clone(name), m);
 260     return m;
 261 }
 262 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 263 {
 264     abc_file_t*file = cls->file;
 265     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 266     m->trait = trait_new_method(&cls->static_traits, multiname_clone(name), m);
 267     return m;
 268 }
 269
 270 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 271 {
 272     abc_file_t*file = cls->file;
 273     multiname_t*m_name = multiname_clone(name);
 274     multiname_t*m_type = multiname_clone(type);
 275     trait_t*t = trait_new_member(&cls->traits, m_type, m_name, 0);
 276     return t;
 277 }
 278 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 279 {
 280     abc_file_t*file = cls->file;
 281     multiname_t*m_name = multiname_clone(name);
 282     multiname_t*m_type = multiname_clone(type);
 283     trait_t*t = trait_new_member(&cls->static_traits, m_type, m_name, 0);
 284     return t;
 285 }
 286
 287
 288 trait_t* traits_find_slotid(trait_list_t*traits, int slotid)
 289 {
 290     trait_list_t*l;
 291     trait_t*t=0;
 292     for(l=traits;l;l=l->next) {
 293         if(l->trait->slot_id==slotid) {
 294             t=l->trait;
 295             break;
 296         }
 297     }
 298     return t;
 299 }
 300
 301 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 302 {
 303     abc_file_t*file = code->file;
 304     multiname_t*m = multiname_fromstring(multiname);
 305     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 306     trait->cls = cls;
 307     list_append(code->traits, trait);
 308 }
 309
 310 /* notice: traits of a method (body) belonging to an init script
 311    and traits of the init script are *not* the same thing */
 312 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 313 {
 314     abc_file_t*file = script->file;
 315     multiname_t*m = multiname_clone(multiname);
 316     int slotid = list_length(script->traits)+1;
 317     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 318     trait->cls = cls;
 319     list_append(script->traits, trait);
 320     return slotid;
 321 }
 322
 323 abc_script_t* abc_initscript(abc_file_t*file)
 324 {
 325     abc_method_t*m = abc_method_new(file, 0, 1);
 326     abc_script_t* s = malloc(sizeof(abc_script_t));
 327     s->method = m;
 328     s->traits = list_new();
 329     s->file = file;
 330     array_append(file->scripts, NO_KEY, s);
 331     return s;
 332 }
 333
 334 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen);
 335
 336 static void dump_method(FILE*fo, const char*prefix,
 337                                  const char*attr,
 338                                  const char*type,
 339                                  const char*name,
 340                                  abc_method_t*m, abc_file_t*file, dict_t*methods_seen)
 341 {
 342     if(methods_seen)
 343         dict_put(methods_seen, m, 0);
 344
 345     char*return_type = 0;
 346     if(m->return_type)
 347         return_type = multiname_tostring(m->return_type);
 348     else
 349         return_type = strdup("*");
 350
 351     fprintf(fo, "%s", prefix);
 352     fprintf(fo, "%s %s ", attr, type);
 353     fprintf(fo, "%s %s=%s", return_type, name, m->name);
 354     params_dump(fo, m->parameters, m->optional_parameters);
 355     fprintf(fo, "(%d params, %d optional)\n", list_length(m->parameters), list_length(m->optional_parameters));
 356
 357     free(return_type);return_type=0;
 358
 359     abc_method_body_t*c = m->body;
 360     if(!c) {
 361         return;
 362     }
 363
 364     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 365             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 366             c->old.max_scope_depth);
 367
 368
 369     int flags = c->method->flags;
 370     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 371     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 372     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 373     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 374     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 375     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 376     if(flags) fprintf(fo, " %02x", flags);
 377     fprintf(fo, "]");
 378
 379     if(m->trait) {
 380         fprintf(fo, " slot:%d", m->trait->slot_id);
 381     }
 382     fprintf(fo, "\n");
 383
 384
 385     char prefix2[80];
 386     sprintf(prefix2, "%s    ", prefix);
 387     if(c->traits)
 388         traits_dump(fo, prefix, c->traits, file, methods_seen);
 389     fprintf(fo, "%s{\n", prefix);
 390     code_dump2(c->code, c->exceptions, file, prefix2, fo);
 391     fprintf(fo, "%s}\n\n", prefix);
 392 }
 393
 394 static void traits_free(trait_list_t*traits)
 395 {
 396     trait_list_t*t = traits;
 397     while(t) {
 398         if(t->trait->name) {
 399             multiname_destroy(t->trait->name);t->trait->name = 0;
 400         }
 401         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 402             multiname_destroy(t->trait->type_name);
 403         }
 404         if(t->trait->value) {
 405             constant_free(t->trait->value);t->trait->value = 0;
 406         }
 407         free(t->trait);t->trait = 0;
 408         t = t->next;
 409     }
 410     list_free(traits);
 411 }
 412
 413 static char trait_is_method(trait_t*trait)
 414 {
 415     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 416             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 417 }
 418
 419 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 420 {
 421     int num_traits = swf_GetU30(tag);
 422     trait_list_t*traits = list_new();
 423     int t;
 424     if(num_traits) {
 425         DEBUG printf("%d traits\n", num_traits);
 426     }
 427
 428     for(t=0;t<num_traits;t++) {
 429         NEW(trait_t,trait);
 430         list_append(traits, trait);
 431
 432         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 433
 434         const char*name = 0;
 435         DEBUG name = multiname_tostring(trait->name);
 436         U8 kind = swf_GetU8(tag);
 437         U8 attributes = kind&0xf0;
 438         kind&=0x0f;
 439         trait->kind = kind;
 440         trait->attributes = attributes;
 441         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 442         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 443             trait->disp_id = swf_GetU30(tag);
 444             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 445             trait->method->trait = trait;
 446             DEBUG printf("  method/getter/setter\n");
 447         } else if(kind == TRAIT_FUNCTION) { // function
 448             trait->slot_id =  swf_GetU30(tag);
 449             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 450             trait->method->trait = trait;
 451         } else if(kind == TRAIT_CLASS) { // class
 452             trait->slot_id = swf_GetU30(tag);
 453             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 454             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 455         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 456             trait->slot_id = swf_GetU30(tag);
 457             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 458             int vindex = swf_GetU30(tag);
 459             if(vindex) {
 460                 int vkind = swf_GetU8(tag);
 461                 trait->value = constant_fromindex(pool, vindex, vkind);
 462             }
 463             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 464         } else {
 465             fprintf(stderr, "Can't parse trait type %d\n", kind);
 466         }
 467         if(attributes&0x40) {
 468             int num = swf_GetU30(tag);
 469             int s;
 470             for(s=0;s<num;s++) {
 471                 swf_GetU30(tag); //index into metadata array
 472             }
 473         }
 474     }
 475     return traits;
 476 }
 477
 478 void traits_skip(TAG*tag)
 479 {
 480     int num_traits = swf_GetU30(tag);
 481     int t;
 482     for(t=0;t<num_traits;t++) {
 483         swf_GetU30(tag);
 484         U8 kind = swf_GetU8(tag);
 485         U8 attributes = kind&0xf0;
 486         kind&=0x0f;
 487         swf_GetU30(tag);
 488         swf_GetU30(tag);
 489         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 490             if(swf_GetU30(tag)) swf_GetU8(tag);
 491         } else if(kind>TRAIT_CONST) {
 492             fprintf(stderr, "Can't parse trait type %d\n", kind);
 493         }
 494         if(attributes&0x40) {
 495             int s, num = swf_GetU30(tag);
 496             for(s=0;s<num;s++) swf_GetU30(tag);
 497         }
 498     }
 499 }
 500
 501
 502 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 503 {
 504     if(!traits) {
 505         swf_SetU30(tag, 0);
 506         return;
 507     }
 508     swf_SetU30(tag, list_length(traits));
 509     int s;
 510
 511     while(traits) {
 512         trait_t*trait = traits->trait;
 513
 514         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 515         swf_SetU8(tag, trait->kind|trait->attributes);
 516
 517         swf_SetU30(tag, trait->data1);
 518
 519         if(trait->kind == TRAIT_CLASS) {
 520             swf_SetU30(tag, trait->cls->index);
 521         } else if(trait->kind == TRAIT_GETTER ||
 522                   trait->kind == TRAIT_SETTER ||
 523                   trait->kind == TRAIT_METHOD) {
 524             swf_SetU30(tag, trait->method->index);
 525         } else if(trait->kind == TRAIT_SLOT ||
 526                   trait->kind == TRAIT_CONST) {
 527             int index = pool_register_multiname(pool, trait->type_name);
 528             swf_SetU30(tag, index);
 529         } else  {
 530             swf_SetU30(tag, trait->data2);
 531         }
 532
 533         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 534             int vindex = constant_get_index(pool, trait->value);
 535             swf_SetU30(tag, vindex);
 536             if(vindex) {
 537                 swf_SetU8(tag, trait->value->type);
 538             }
 539         }
 540         if(trait->attributes&0x40) {
 541             // metadata
 542             swf_SetU30(tag, 0);
 543         }
 544         traits = traits->next;
 545     }
 546 }
 547
 548
 549 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen)
 550 {
 551     int t;
 552     while(traits) {
 553         trait_t*trait = traits->trait;
 554         char*name = multiname_tostring(trait->name);
 555         U8 kind = trait->kind;
 556         U8 attributes = trait->attributes;
 557
 558         char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
 559         char* type = "";
 560         if(a==TRAIT_ATTR_FINAL)
 561             type = "final ";
 562         else if(a==TRAIT_ATTR_OVERRIDE)
 563             type = "override ";
 564         else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
 565             type = "final override ";
 566
 567         if(attributes&TRAIT_ATTR_METADATA)
 568             fprintf(fo, "<metadata>");
 569
 570         if(kind == TRAIT_METHOD) {
 571             abc_method_t*m = trait->method;
 572             dump_method(fo, prefix, type, "method", name, m, file, methods_seen);
 573         } else if(kind == TRAIT_GETTER) {
 574             abc_method_t*m = trait->method;
 575             dump_method(fo, prefix, type, "getter", name, m, file, methods_seen);
 576         } else if(kind == TRAIT_SETTER) {
 577             abc_method_t*m = trait->method;
 578             dump_method(fo, prefix, type, "setter", name, m, file, methods_seen);
 579         } else if(kind == TRAIT_FUNCTION) { // function
 580             abc_method_t*m = trait->method;
 581             dump_method(fo, prefix, type, "function", name, m, file, methods_seen);
 582         } else if(kind == TRAIT_CLASS) { // class
 583             abc_class_t*cls = trait->cls;
 584             if(!cls) {
 585                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 586             } else {
 587                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 588             }
 589         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 590             int slot_id = trait->slot_id;
 591             char*type_name = multiname_tostring(trait->type_name);
 592             char*value = constant_tostring(trait->value);
 593             fprintf(fo, "%sslot %d: %s %s:%s %s %s\n", prefix, trait->slot_id,
 594                     kind==TRAIT_CONST?"const":"var", name, type_name,
 595                     trait->value?"=":"", trait->value?value:"");
 596             if(value) free(value);
 597             free(type_name);
 598         } else {
 599             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 600         }
 601         free(name);
 602         traits=traits->next;
 603     }
 604 }
 605
 606 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 607 {
 608     abc_file_t* file = (abc_file_t*)code;
 609
 610     if(file->name) {
 611         fprintf(fo, "%s#\n", prefix);
 612         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 613         fprintf(fo, "%s#\n", prefix);
 614     }
 615
 616     int t;
 617     for(t=0;t<file->metadata->num;t++) {
 618         const char*entry_name = array_getkey(file->metadata, t);
 619         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 620         int s;
 621         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 622         for(s=0;s<items->num;s++) {
 623             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 624         }
 625         fprintf(fo, "%s#\n", prefix);
 626     }
 627
 628     dict_t*methods_seen = dict_new2(&ptr_type);
 629     for(t=0;t<file->classes->num;t++) {
 630         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 631         char prefix2[80];
 632         sprintf(prefix2, "%s    ", prefix);
 633
 634         fprintf(fo, "%s", prefix);
 635         if(cls->flags&1) fprintf(fo, "sealed ");
 636         if(cls->flags&2) fprintf(fo, "final ");
 637         if(cls->flags&4) fprintf(fo, "interface ");
 638         if(cls->flags&8) {
 639             char*s = namespace_tostring(cls->protectedNS);
 640             fprintf(fo, "protectedNS(%s) ", s);
 641             free(s);
 642         }
 643
 644         char*classname = multiname_tostring(cls->classname);
 645         fprintf(fo, "class %s", classname);
 646         free(classname);
 647         if(cls->superclass) {
 648             char*supername = multiname_tostring(cls->superclass);
 649             fprintf(fo, " extends %s", supername);
 650             free(supername);
 651         }
 652         if(cls->interfaces) {
 653             multiname_list_t*ilist = cls->interfaces;
 654             if(ilist)
 655                 fprintf(fo, " implements");
 656             while(ilist) {
 657                 char*s = multiname_tostring(ilist->multiname);
 658                 fprintf(fo, " %s", s);
 659                 free(s);
 660                 ilist = ilist->next;
 661             }
 662             ilist->next;
 663         }
 664         if(cls->flags&0xf0)
 665             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 666         fprintf(fo, "%s{\n", prefix);
 667
 668         dict_put(methods_seen, cls->static_constructor, 0);
 669         dict_put(methods_seen, cls->constructor, 0);
 670
 671         if(cls->static_constructor) {
 672             dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file, methods_seen);
 673         }
 674         traits_dump(fo, prefix2, cls->static_traits, file, methods_seen);
 675
 676         char*n = multiname_tostring(cls->classname);
 677         if(cls->constructor)
 678             dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file, methods_seen);
 679         free(n);
 680         traits_dump(fo, prefix2,cls->traits, file, methods_seen);
 681         fprintf(fo, "%s}\n", prefix);
 682     }
 683     fprintf(fo, "%s\n", prefix);
 684
 685     for(t=0;t<file->scripts->num;t++) {
 686         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 687         dump_method(fo, prefix, "", "initmethod", "init", s->method, file, methods_seen);
 688         traits_dump(fo, prefix, s->traits, file, methods_seen);
 689     }
 690
 691     char extra=0;
 692     for(t=0;t<file->methods->num;t++) {
 693         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 694         if(!dict_contains(methods_seen, m)) {
 695             if(!extra) {
 696                 extra=1;
 697                 fprintf(fo, "\n");
 698                 fprintf(fo, "%s//internal (non-class non-script) methods:\n", prefix);
 699             }
 700             char name[18];
 701             sprintf(name, "%08x ", m->index);
 702             dump_method(fo, prefix, "", "internalmethod", name, m, file, methods_seen);
 703         }
 704     }
 705     dict_destroy(methods_seen);
 706
 707     return file;
 708 }
 709
 710 void* swf_ReadABC(TAG*tag)
 711 {
 712     abc_file_t* file = abc_file_new();
 713     pool_t*pool = pool_new();
 714
 715     swf_SetTagPos(tag, 0);
 716     int t;
 717     if(tag->id == ST_DOABC) {
 718         U32 abcflags = swf_GetU32(tag);
 719         DEBUG printf("flags=%08x\n", abcflags);
 720         char*name= swf_GetString(tag);
 721         file->name = (name&&name[0])?strdup(name):0;
 722     }
 723     U32 version = swf_GetU32(tag);
 724     if(version!=0x002e0010) {
 725         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 726     }
 727
 728     pool_read(pool, tag);
 729
 730     int num_methods = swf_GetU30(tag);
 731     DEBUG printf("%d methods\n", num_methods);
 732     for(t=0;t<num_methods;t++) {
 733         NEW(abc_method_t,m);
 734         int param_count = swf_GetU30(tag);
 735         int return_type_index = swf_GetU30(tag);
 736         if(return_type_index)
 737             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 738         else
 739             m->return_type = 0;
 740
 741         int s;
 742         for(s=0;s<param_count;s++) {
 743             int type_index = swf_GetU30(tag);
 744
 745             /* type_index might be 0 ("*") */
 746             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 747             list_append(m->parameters, param);
 748         }
 749
 750         int namenr = swf_GetU30(tag);
 751         if(namenr)
 752             m->name = strdup(pool_lookup_string(pool, namenr));
 753         else
 754             m->name = strdup("");
 755
 756         m->flags = swf_GetU8(tag);
 757
 758         DEBUG printf("method %d) %s ", m->name);
 759         DEBUG params_dump(stdout, m->parameters, m->optional_parameters);
 760         DEBUG printf("flags=%02x\n", t, m->flags);
 761
 762         if(m->flags&0x08) {
 763             m->optional_parameters = list_new();
 764             int num = swf_GetU30(tag);
 765             int s;
 766             for(s=0;s<num;s++) {
 767                 int vindex = swf_GetU30(tag);
 768                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 769                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 770                 list_append(m->optional_parameters, c);
 771
 772             }
 773         }
 774         if(m->flags&0x80) {
 775             /* debug information- not used by avm2 */
 776             multiname_list_t*l = m->parameters;
 777             while(l) {
 778                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 779                 l = l->next;
 780             }
 781         }
 782         m->index = array_length(file->methods);
 783         array_append(file->methods, NO_KEY, m);
 784     }
 785
 786     parse_metadata(tag, file, pool);
 787
 788     /* skip classes, and scripts for now, and do the real parsing later */
 789     int num_classes = swf_GetU30(tag);
 790     int classes_pos = tag->pos;
 791     DEBUG printf("%d classes\n", num_classes);
 792     for(t=0;t<num_classes;t++) {
 793         abc_class_t*cls = malloc(sizeof(abc_class_t));
 794         memset(cls, 0, sizeof(abc_class_t));
 795
 796         swf_GetU30(tag); //classname
 797         swf_GetU30(tag); //supername
 798
 799         array_append(file->classes, NO_KEY, cls);
 800
 801         cls->flags = swf_GetU8(tag);
 802         DEBUG printf("class %d %02x\n", t, cls->flags);
 803         if(cls->flags&8)
 804             swf_GetU30(tag); //protectedNS
 805         int s;
 806         int inum = swf_GetU30(tag); //interface count
 807         cls->interfaces = 0;
 808         for(s=0;s<inum;s++) {
 809             int interface_index = swf_GetU30(tag);
 810             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 811             list_append(cls->interfaces, m);
 812             DEBUG printf("  class %d interface: %s\n", t, m->name);
 813         }
 814
 815         int iinit = swf_GetU30(tag); //iinit
 816         DEBUG printf("--iinit-->%d\n", iinit);
 817         traits_skip(tag);
 818     }
 819     for(t=0;t<num_classes;t++) {
 820         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 821         int cinit = swf_GetU30(tag);
 822         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 823         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 824         traits_skip(tag);
 825     }
 826     int num_scripts = swf_GetU30(tag);
 827     DEBUG printf("%d scripts\n", num_scripts);
 828     for(t=0;t<num_scripts;t++) {
 829         int init = swf_GetU30(tag);
 830         traits_skip(tag);
 831     }
 832
 833     int num_method_bodies = swf_GetU30(tag);
 834     DEBUG printf("%d method bodies\n", num_method_bodies);
 835     for(t=0;t<num_method_bodies;t++) {
 836         int methodnr = swf_GetU30(tag);
 837         if(methodnr >= file->methods->num) {
 838             printf("Invalid method number: %d\n", methodnr);
 839             return 0;
 840         }
 841         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 842         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 843         memset(c, 0, sizeof(abc_method_body_t));
 844         c->old.max_stack = swf_GetU30(tag);
 845         c->old.local_count = swf_GetU30(tag);
 846         c->old.init_scope_depth = swf_GetU30(tag);
 847         c->old.max_scope_depth = swf_GetU30(tag);
 848
 849         c->init_scope_depth = c->old.init_scope_depth;
 850         int code_length = swf_GetU30(tag);
 851
 852         c->method = m;
 853         m->body = c;
 854
 855         int pos = tag->pos + code_length;
 856         codelookup_t*codelookup = 0;
 857         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 858         tag->pos = pos;
 859
 860         int exception_count = swf_GetU30(tag);
 861         int s;
 862         c->exceptions = list_new();
 863         for(s=0;s<exception_count;s++) {
 864             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 865
 866             e->from = code_atposition(codelookup, swf_GetU30(tag));
 867             e->to = code_atposition(codelookup, swf_GetU30(tag));
 868             e->target = code_atposition(codelookup, swf_GetU30(tag));
 869
 870             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 871             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 872             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 873             //if(e->var_name) e->var_name = strdup(e->var_name);
 874             list_append(c->exceptions, e);
 875         }
 876         codelookup_free(codelookup);
 877         c->traits = traits_parse(tag, pool, file);
 878
 879         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 880
 881         array_append(file->method_bodies, NO_KEY, c);
 882     }
 883     if(tag->len - tag->pos) {
 884         fprintf(stderr, "ERROR: %d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 885         return 0;
 886     }
 887
 888     swf_SetTagPos(tag, classes_pos);
 889     for(t=0;t<num_classes;t++) {
 890         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 891
 892         int classname_index = swf_GetU30(tag);
 893         int superclass_index = swf_GetU30(tag);
 894         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 895         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 896         cls->flags = swf_GetU8(tag);
 897         const char*ns = "";
 898         if(cls->flags&8) {
 899             int ns_index = swf_GetU30(tag);
 900             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 901         }
 902
 903         int num_interfaces = swf_GetU30(tag); //interface count
 904         int s;
 905         for(s=0;s<num_interfaces;s++) {
 906             swf_GetU30(tag);
 907         }
 908         int iinit = swf_GetU30(tag);
 909         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 910         cls->traits = traits_parse(tag, pool, file);
 911     }
 912     for(t=0;t<num_classes;t++) {
 913         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 914         /* SKIP */
 915         swf_GetU30(tag); // cindex
 916         cls->static_traits = traits_parse(tag, pool, file);
 917     }
 918     int num_scripts2 = swf_GetU30(tag);
 919     for(t=0;t<num_scripts2;t++) {
 920         int init = swf_GetU30(tag);
 921         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 922
 923         abc_script_t*s = malloc(sizeof(abc_script_t));
 924         memset(s, 0, sizeof(abc_script_t));
 925         s->method = m;
 926         s->traits = traits_parse(tag, pool, file);
 927         array_append(file->scripts, NO_KEY, s);
 928     }
 929
 930     pool_destroy(pool);
 931     return file;
 932 }
 933
 934 static pool_t*writeABC(TAG*abctag, void*code, pool_t*pool)
 935 {
 936     abc_file_t*file = (abc_file_t*)code;
 937     if(!pool)
 938         pool = pool_new();
 939     if(!file)
 940         file = abc_file_new();
 941
 942     TAG*tmp = swf_InsertTag(0,0);
 943     TAG*tag = tmp;
 944     int t;
 945
 946     /* add method bodies where needed */
 947     for(t=0;t<file->classes->num;t++) {
 948         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 949         if(!c->constructor) {
 950             if(!(c->flags&CLASS_INTERFACE)) {
 951                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 952                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 953                 // don't bother to set m->index
 954                 body->method = m; m->body = body;
 955                 if(c->superclass && c->superclass->name && strcmp(c->superclass->name,"Object")) {
 956                     body->code = abc_getlocal_0(body->code);
 957                     body->code = abc_constructsuper(body->code, 0);
 958                 }
 959                 body->code = abc_returnvoid(body->code);
 960                 c->constructor = m;
 961             } else {
 962                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 963                 c->constructor = m;
 964             }
 965         }
 966         if(!c->static_constructor) {
 967             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 968             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 969             body->method = m; m->body = body;
 970             body->code = abc_returnvoid(0);
 971             c->static_constructor = m;
 972         }
 973     }
 974
 975
 976     swf_SetU30(tag, file->methods->num);
 977     /* enumerate classes, methods and method bodies */
 978     for(t=0;t<file->methods->num;t++) {
 979         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 980         m->index = t;
 981     }
 982     for(t=0;t<file->classes->num;t++) {
 983         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 984         c->index = t;
 985     }
 986     for(t=0;t<file->method_bodies->num;t++) {
 987         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 988         m->index = t;
 989     }
 990
 991     /* generate code statistics */
 992     for(t=0;t<file->method_bodies->num;t++) {
 993         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 994         m->stats = code_get_statistics(m->code, m->exceptions);
 995     }
 996
 997     /* level init scope depths: The init scope depth of a method is
 998        always as least as high as the init scope depth of it's surrounding
 999        class.
1000        A method has it's own init_scope_depth if it's an init method
1001        (then its init scope depth is zero), or if it's used as a closure.
1002
1003        Not sure yet what to do with methods which are used at different
1004        locations- e.g. the nullmethod is used all over the place.
1005        EDIT: flashplayer doesn't allow this anyway- a method can only
1006              be used once
1007
1008        Also, I have the strong suspicion that flash player uses only
1009        the difference between max_scope_stack and init_scope_stack, anyway.
1010      */
1011     for(t=0;t<file->classes->num;t++) {
1012         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1013         trait_list_t*traits = c->traits;
1014         if(c->constructor && c->constructor->body &&
1015            c->constructor->body->init_scope_depth < c->init_scope_depth) {
1016            c->constructor->body->init_scope_depth = c->init_scope_depth;
1017         }
1018         if(c->static_constructor && c->static_constructor->body &&
1019            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
1020            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
1021         }
1022         while(traits) {
1023             trait_t*trait = traits->trait;
1024             if(trait_is_method(trait) && trait->method->body) {
1025                 abc_method_body_t*body = trait->method->body;
1026                 if(body->init_scope_depth < c->init_scope_depth) {
1027                    body->init_scope_depth = c->init_scope_depth;
1028                 }
1029             }
1030             traits = traits->next;
1031         }
1032     }
1033
1034     for(t=0;t<file->methods->num;t++) {
1035         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1036         int n = 0;
1037         multiname_list_t*l = m->parameters;
1038         int num_params = list_length(m->parameters);
1039         swf_SetU30(tag, num_params);
1040         if(m->return_type)
1041             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1042         else
1043             swf_SetU30(tag, 0);
1044         int s;
1045         while(l) {
1046             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1047             l = l->next;
1048         }
1049         if(m->name) {
1050             swf_SetU30(tag, pool_register_string(pool, m->name));
1051         } else {
1052             swf_SetU30(tag, 0);
1053         }
1054
1055         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1056         if(m->optional_parameters)
1057             flags |= METHOD_HAS_OPTIONAL;
1058         if(m->body) {
1059             flags |= m->body->stats->flags;
1060         }
1061
1062         swf_SetU8(tag, flags);
1063         if(flags&METHOD_HAS_OPTIONAL) {
1064             swf_SetU30(tag, list_length(m->optional_parameters));
1065             constant_list_t*l = m->optional_parameters;
1066             while(l) {
1067                 int i = constant_get_index(pool, l->constant);
1068                 swf_SetU30(tag, i);
1069                 if(!i) {
1070                     swf_SetU8(tag, CONSTANT_NULL);
1071                 } else {
1072                     swf_SetU8(tag, l->constant->type);
1073                 }
1074                 l = l->next;
1075             }
1076         }
1077     }
1078
1079     /* write metadata */
1080     swf_SetU30(tag, file->metadata->num);
1081     for(t=0;t<file->metadata->num;t++) {
1082         const char*entry_name = array_getkey(file->metadata, t);
1083         swf_SetU30(tag, pool_register_string(pool, entry_name));
1084         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1085         swf_SetU30(tag, items->num);
1086         int s;
1087         for(s=0;s<items->num;s++) {
1088             int i1 = pool_register_string(pool, array_getkey(items, s));
1089             int i2 = pool_register_string(pool, array_getvalue(items, s));
1090             swf_SetU30(tag, i1);
1091             swf_SetU30(tag, i2);
1092         }
1093     }
1094
1095     swf_SetU30(tag, file->classes->num);
1096     for(t=0;t<file->classes->num;t++) {
1097         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1098
1099         int classname_index = pool_register_multiname(pool, c->classname);
1100         int superclass_index = pool_register_multiname(pool, c->superclass);
1101
1102         swf_SetU30(tag, classname_index);
1103         swf_SetU30(tag, superclass_index);
1104
1105         swf_SetU8(tag, c->flags); // flags
1106         if(c->flags&0x08) {
1107             int ns_index = pool_register_namespace(pool, c->protectedNS);
1108             swf_SetU30(tag, ns_index);
1109         }
1110
1111         swf_SetU30(tag, list_length(c->interfaces));
1112         multiname_list_t*interface= c->interfaces;
1113         while(interface) {
1114             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1115             interface = interface->next;
1116         }
1117
1118         assert(c->constructor);
1119         swf_SetU30(tag, c->constructor->index);
1120
1121         traits_write(pool, tag, c->traits);
1122     }
1123     for(t=0;t<file->classes->num;t++) {
1124         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1125         assert(c->static_constructor);
1126         swf_SetU30(tag, c->static_constructor->index);
1127
1128         traits_write(pool, tag, c->static_traits);
1129     }
1130
1131     swf_SetU30(tag, file->scripts->num);
1132     for(t=0;t<file->scripts->num;t++) {
1133         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1134         if(!s->method->body || !s->method->body->code) {
1135             fprintf(stderr, "Internal Error: initscript has no body\n");
1136         }
1137         swf_SetU30(tag, s->method->index); //!=t!
1138         traits_write(pool, tag, s->traits);
1139     }
1140
1141     swf_SetU30(tag, file->method_bodies->num);
1142     for(t=0;t<file->method_bodies->num;t++) {
1143         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1144         abc_method_t*m = c->method;
1145         swf_SetU30(tag, m->index);
1146
1147         //swf_SetU30(tag, c->old.max_stack);
1148         //swf_SetU30(tag, c->old.local_count);
1149         //swf_SetU30(tag, c->old.init_scope_depth);
1150         //swf_SetU30(tag, c->old.max_scope_depth);
1151
1152         swf_SetU30(tag, c->stats->max_stack);
1153         int param_num = list_length(c->method->parameters)+1;
1154         if(c->method->flags&METHOD_NEED_REST)
1155             param_num++;
1156         if(param_num <= c->stats->local_count)
1157             swf_SetU30(tag, c->stats->local_count);
1158         else
1159             swf_SetU30(tag, param_num);
1160
1161         swf_SetU30(tag, c->init_scope_depth);
1162         swf_SetU30(tag, c->stats->max_scope_depth+
1163                         c->init_scope_depth);
1164
1165         code_write(tag, c->code, pool, file);
1166
1167         swf_SetU30(tag, list_length(c->exceptions));
1168         abc_exception_list_t*l = c->exceptions;
1169         while(l) {
1170             // warning: assumes "pos" in each code_t is up-to-date
1171             swf_SetU30(tag, l->abc_exception->from->pos);
1172             swf_SetU30(tag, l->abc_exception->to->pos);
1173             swf_SetU30(tag, l->abc_exception->target->pos);
1174             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1175             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1176             l = l->next;
1177         }
1178
1179         traits_write(pool, tag, c->traits);
1180     }
1181
1182     /* free temporary codestat data again. Notice: If we were to write this
1183        file multiple times, this can also be shifted to abc_file_free() */
1184     for(t=0;t<file->method_bodies->num;t++) {
1185         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1186         codestats_free(m->stats);m->stats=0;
1187     }
1188
1189     // --- start to write real tag --
1190
1191     tag = abctag;
1192
1193     if(tag->id == ST_DOABC) {
1194         swf_SetU32(tag, file->flags); // flags
1195         swf_SetString(tag, file->name);
1196     }
1197
1198     swf_SetU16(tag, 0x10); //version
1199     swf_SetU16(tag, 0x2e);
1200
1201     pool_write(pool, tag);
1202
1203     swf_SetBlock(tag, tmp->data, tmp->len);
1204
1205     swf_DeleteTag(0, tmp);
1206     return pool;
1207 }
1208
1209 void swf_WriteABC(TAG*abctag, void*code)
1210 {
1211     pool_t*pool = writeABC(abctag, code, 0);
1212     pool_optimize(pool);
1213     swf_ResetTag(abctag, abctag->id);
1214     writeABC(abctag, code, pool);
1215     pool_destroy(pool);
1216 }
1217
1218 void abc_file_free(abc_file_t*file)
1219 {
1220     if(!file)
1221         return;
1222     int t;
1223     if(file->metadata) {
1224         for(t=0;t<file->metadata->num;t++) {
1225             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1226             int s;
1227             for(s=0;s<items->num;s++) {
1228                 free(array_getvalue(items, s));
1229             }
1230             array_free(items);
1231         }
1232         array_free(file->metadata);file->metadata=0;
1233     }
1234
1235     for(t=0;t<file->methods->num;t++) {
1236         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1237
1238         multiname_list_t*param = m->parameters;
1239         while(param) {
1240             multiname_destroy(param->multiname);param->multiname=0;
1241             param = param->next;
1242         }
1243         list_free(m->parameters);m->parameters=0;
1244
1245         constant_list_t*opt = m->optional_parameters;
1246         while(opt) {
1247             constant_free(opt->constant);opt->constant=0;
1248             opt = opt->next;
1249         }
1250         list_free(m->optional_parameters);m->optional_parameters=0;
1251
1252         if(m->name) {
1253             free((void*)m->name);m->name=0;
1254         }
1255         if(m->return_type) {
1256             multiname_destroy(m->return_type);
1257         }
1258         free(m);
1259     }
1260     array_free(file->methods);file->methods=0;
1261
1262     for(t=0;t<file->classes->num;t++) {
1263         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1264         traits_free(cls->traits);cls->traits=0;
1265         traits_free(cls->static_traits);cls->static_traits=0;
1266
1267         if(cls->classname) {
1268             multiname_destroy(cls->classname);
1269         }
1270         if(cls->superclass) {
1271             multiname_destroy(cls->superclass);
1272         }
1273
1274         multiname_list_t*i = cls->interfaces;
1275         while(i) {
1276             multiname_destroy(i->multiname);i->multiname=0;
1277             i = i->next;
1278         }
1279         list_free(cls->interfaces);cls->interfaces=0;
1280
1281         if(cls->protectedNS) {
1282             namespace_destroy(cls->protectedNS);
1283         }
1284         free(cls);
1285     }
1286     array_free(file->classes);file->classes=0;
1287
1288     for(t=0;t<file->scripts->num;t++) {
1289         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1290         traits_free(s->traits);s->traits=0;
1291         free(s);
1292     }
1293     array_free(file->scripts);file->scripts=0;
1294
1295     for(t=0;t<file->method_bodies->num;t++) {
1296         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1297         code_free(body->code);body->code=0;
1298         traits_free(body->traits);body->traits=0;
1299
1300         abc_exception_list_t*ee = body->exceptions;
1301         while(ee) {
1302             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1303             e->from = e->to = e->target = 0;
1304             multiname_destroy(e->exc_type);e->exc_type=0;
1305             multiname_destroy(e->var_name);e->var_name=0;
1306             free(e);
1307             ee=ee->next;
1308         }
1309         list_free(body->exceptions);body->exceptions=0;
1310
1311         free(body);
1312     }
1313     array_free(file->method_bodies);file->method_bodies=0;
1314
1315     if(file->name) {
1316         free((void*)file->name);file->name=0;
1317     }
1318
1319     free(file);
1320 }
1321
1322 void swf_FreeABC(void*code)
1323 {
1324     abc_file_t*file= (abc_file_t*)code;
1325     abc_file_free(file);
1326 }
1327