lib/as3/abc.c

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