lib/as3/abc.c

   1 /* abc.c
   2
   3    Routines for handling Flash2 AVM2 ABC Actionscript
   4
   5    Extension module for the rfxswf library.
   6    Part of the swftools package.
   7
   8    Copyright (c) 2008 Matthias Kramm <kramm@quiss.org>
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
  23
  24 #include <stdarg.h>
  25 #include <assert.h>
  26 #include "../rfxswf.h"
  27 #include "../q.h"
  28 #include "abc.h"
  29
  30 char stringbuffer[2048];
  31
  32 int abc_RegisterNameSpace(abc_file_t*file, const char*name);
  33 int abc_RegisterPackageNameSpace(abc_file_t*file, const char*name);
  34 int abc_RegisterPackageInternalNameSpace(abc_file_t*file, const char*name);
  35 int abc_RegisterProtectedNameSpace(abc_file_t*file, const char*name);
  36 int abc_RegisterExplicitNameSpace(abc_file_t*file, const char*name);
  37 int abc_RegisterStaticProtectedNameSpace(abc_file_t*file, const char*name);
  38 int abc_RegisterPrivateNameSpace(abc_file_t*file, const char*name);
  39
  40 /* TODO: switch to a datastructure with just values */
  41 #define NO_KEY ""
  42
  43 static char* params_tostring(multiname_list_t*list)
  44 {
  45     multiname_list_t*l;
  46     int n = list_length(list);
  47     char**names = (char**)malloc(sizeof(char*)*n);
  48
  49     l = list;
  50     n = 0;
  51     int size = 0;
  52     while(l) {
  53         names[n] = multiname_tostring(l->multiname);
  54         size += strlen(names[n]) + 2;
  55         n++;l=l->next;
  56     }
  57
  58     char* params = malloc(size+15);
  59     params[0]='(';
  60     params[1]=0;
  61     l = list;
  62     int s=0;
  63     n = 0;
  64     while(l) {
  65         if(s)
  66             strcat(params, ", ");
  67         strcat(params, names[n]);
  68         free(names[n]);
  69         l = l->next;
  70         n++;
  71         s=1;
  72     }
  73     free(names);
  74     /*char num[20];
  75     sprintf(num, "[%d params]", n);
  76     strcat(params, num);*/
  77     strcat(params, ")");
  78     int t;
  79     return params;
  80 }
  81
  82 //#define DEBUG
  83 #define DEBUG if(0)
  84
  85 static void parse_metadata(TAG*tag, abc_file_t*file, pool_t*pool)
  86 {
  87     int t;
  88     int num_metadata = swf_GetU30(tag);
  89
  90     DEBUG printf("%d metadata\n");
  91     for(t=0;t<num_metadata;t++) {
  92         const char*entry_name = pool_lookup_string(pool, swf_GetU30(tag));
  93         int num = swf_GetU30(tag);
  94         int s;
  95         DEBUG printf("  %s\n", entry_name);
  96         array_t*items = array_new();
  97         for(s=0;s<num;s++) {
  98             int i1 = swf_GetU30(tag);
  99             int i2 = swf_GetU30(tag);
 100             const char*key = i1?pool_lookup_string(pool, i1):"";
 101             const char*value = i2?pool_lookup_string(pool, i2):"";
 102             DEBUG printf("    %s=%s\n", key, value);
 103             array_append(items, key, strdup(value));
 104         }
 105         array_append(file->metadata, entry_name, items);
 106     }
 107 }
 108
 109 void swf_CopyData(TAG*to, TAG*from, int len)
 110 {
 111     unsigned char*data = malloc(len);
 112     swf_GetBlock(from, data, len);
 113     swf_SetBlock(to, data, len);
 114     free(data);
 115 }
 116
 117 abc_file_t*abc_file_new()
 118 {
 119     abc_file_t*f = malloc(sizeof(abc_file_t));
 120     memset(f, 0, sizeof(abc_file_t));
 121     f->metadata = array_new();
 122
 123     f->methods = array_new();
 124     f->classes = array_new();
 125     f->scripts = array_new();
 126     f->method_bodies = array_new();
 127     f->flags = ABCFILE_LAZY;
 128
 129     return f;
 130 }
 131
 132 abc_class_t* abc_class_new(abc_file_t*file, multiname_t*classname, multiname_t*superclass) {
 133
 134     NEW(abc_class_t,c);
 135     array_append(file->classes, NO_KEY, c);
 136
 137     c->file = file;
 138     c->classname = multiname_clone(classname);
 139     c->superclass = multiname_clone(superclass);
 140     c->flags = 0;
 141     c->constructor = 0;
 142     c->static_constructor = 0;
 143     c->traits = list_new();
 144     return c;
 145 }
 146 abc_class_t* abc_class_new2(abc_file_t*pool, char*classname, char*superclass)
 147 {
 148     return abc_class_new(pool, multiname_fromstring(classname), multiname_fromstring(superclass));
 149 }
 150
 151 void abc_class_sealed(abc_class_t*c)
 152 {
 153     c->flags |= CLASS_SEALED;
 154 }
 155 void abc_class_final(abc_class_t*c)
 156 {
 157     c->flags |= CLASS_FINAL;
 158 }
 159 void abc_class_interface(abc_class_t*c)
 160 {
 161     c->flags |= CLASS_INTERFACE;
 162 }
 163 void abc_class_protectedNS(abc_class_t*c, char*namespace)
 164 {
 165     c->protectedNS = namespace_new_protected(namespace);
 166     c->flags |= CLASS_PROTECTED_NS;
 167 }
 168 void abc_class_add_interface(abc_class_t*c, multiname_t*interface)
 169 {
 170     list_append(c->interfaces, multiname_clone(interface));
 171 }
 172
 173 static abc_method_t* add_method(abc_file_t*file, abc_class_t*cls, multiname_t*returntype, char body)
 174 {
 175     /* construct method object */
 176     NEW(abc_method_t,m);
 177     m->index = array_length(file->methods);
 178     array_append(file->methods, NO_KEY, m);
 179     m->return_type = returntype;
 180
 181     if(body) {
 182         /* construct code (method body) object */
 183         NEW(abc_method_body_t,c);
 184         array_append(file->method_bodies, NO_KEY, c);
 185         c->index = array_length(file->method_bodies);
 186         c->file = file;
 187         c->traits = list_new();
 188         c->code = 0;
 189
 190         /* crosslink the two objects */
 191         m->body = c;
 192         c->method = m;
 193     }
 194
 195     return m;
 196 }
 197
 198 abc_method_t* abc_class_getconstructor(abc_class_t*cls, multiname_t*returntype)
 199 {
 200     if(cls->constructor) {
 201         return cls->constructor;
 202     }
 203     abc_method_t* m = add_method(cls->file, cls, returntype, 1);
 204     cls->constructor = m;
 205     return m;
 206 }
 207
 208 abc_method_t* abc_class_getstaticconstructor(abc_class_t*cls, multiname_t*returntype)
 209 {
 210     if(cls->static_constructor) {
 211         return cls->static_constructor;
 212     }
 213     abc_method_t* m = add_method(cls->file, cls, returntype, 1);
 214     cls->static_constructor = m;
 215     return m;
 216 }
 217
 218 trait_t*trait_new(int type, multiname_t*name, int data1, int data2, constant_t*v)
 219 {
 220     trait_t*trait = malloc(sizeof(trait_t));
 221     memset(trait, 0, sizeof(trait_t));
 222     trait->kind = type&0x0f;
 223     trait->attributes = type&0xf0;
 224     trait->name = name;
 225     trait->data1 = data1;
 226     trait->data2 = data2;
 227     trait->value = v;
 228     return trait;
 229 }
 230 trait_t*trait_new_member(multiname_t*type, multiname_t*name,constant_t*v)
 231 {
 232     int kind = TRAIT_SLOT;
 233     trait_t*trait = malloc(sizeof(trait_t));
 234     memset(trait, 0, sizeof(trait_t));
 235     trait->kind = kind&0x0f;
 236     trait->attributes = kind&0xf0;
 237     trait->name = name;
 238     trait->type_name = type;
 239     return trait;
 240 }
 241 trait_t*trait_new_method(multiname_t*name, abc_method_t*m)
 242 {
 243     int type = TRAIT_METHOD;
 244     trait_t*trait = malloc(sizeof(trait_t));
 245     memset(trait, 0, sizeof(trait_t));
 246     trait->kind = type&0x0f;
 247     trait->attributes = type&0xf0;
 248     trait->name = name;
 249     trait->method = m;
 250     return trait;
 251 }
 252
 253 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 254 {
 255     abc_file_t*file = cls->file;
 256     abc_method_t* m = add_method(cls->file, cls, returntype, !(cls->flags&CLASS_INTERFACE));
 257     m->trait = trait_new_method(multiname_clone(name), m);
 258     /* start assigning traits at position #1.
 259        Weird things happen when assigning slot 0- slot 0 and 1 seem
 260        to be identical */
 261     m->trait->slot_id = list_length(cls->traits)+1;
 262     list_append(cls->traits, m->trait);
 263     return m;
 264 }
 265 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 266 {
 267     abc_file_t*file = cls->file;
 268     abc_method_t* m = add_method(cls->file, cls, returntype, !(cls->flags&CLASS_INTERFACE));
 269     m->trait = trait_new_method(multiname_clone(name), m);
 270     m->trait->slot_id = list_length(cls->static_traits)+1;
 271     list_append(cls->static_traits, m->trait);
 272     return m;
 273 }
 274
 275 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 276 {
 277     abc_file_t*file = cls->file;
 278     multiname_t*m_name = multiname_clone(name);
 279     multiname_t*m_type = multiname_clone(type);
 280     trait_t*t = trait_new_member(m_type, m_name, 0);
 281     t->slot_id = list_length(cls->traits)+1;
 282     list_append(cls->traits, t);
 283     return t;
 284 }
 285 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 286 {
 287     abc_file_t*file = cls->file;
 288     multiname_t*m_name = multiname_clone(name);
 289     multiname_t*m_type = multiname_clone(type);
 290     trait_t*t = trait_new_member(m_type, m_name, 0);
 291     t->slot_id = list_length(cls->static_traits)+1;
 292     list_append(cls->static_traits, t);
 293     return t;
 294 }
 295
 296
 297 trait_t* abc_class_find_slotid(abc_class_t*cls, int slotid)
 298 {
 299     trait_list_t*l;
 300     trait_t*t=0;
 301     for(l=cls->traits;l;l=l->next) {
 302         if(l->trait->slot_id==slotid) {
 303             t=l->trait;
 304             break;
 305         }
 306     }
 307     return t;
 308 }
 309
 310 void abc_method_body_addClassTrait(abc_method_body_t*code, char*multiname, int slotid, abc_class_t*cls)
 311 {
 312     abc_file_t*file = code->file;
 313     multiname_t*m = multiname_fromstring(multiname);
 314     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 315     trait->cls = cls;
 316     list_append(code->traits, trait);
 317 }
 318
 319 /* notice: traits of a method (body) belonging to an init script
 320    and traits of the init script are *not* the same thing */
 321 int abc_initscript_addClassTrait(abc_script_t*script, multiname_t*multiname, abc_class_t*cls)
 322 {
 323     abc_file_t*file = script->file;
 324     multiname_t*m = multiname_clone(multiname);
 325     int slotid = list_length(script->traits)+1;
 326     trait_t*trait = trait_new(TRAIT_CLASS, m, slotid, 0, 0);
 327     trait->cls = cls;
 328     list_append(script->traits, trait);
 329     return slotid;
 330 }
 331
 332 abc_script_t* abc_initscript(abc_file_t*file, multiname_t*returntype)
 333 {
 334     abc_method_t*m = add_method(file, 0, returntype, 1);
 335     abc_script_t* s = malloc(sizeof(abc_script_t));
 336     s->method = m;
 337     s->traits = list_new();
 338     s->file = file;
 339     array_append(file->scripts, NO_KEY, s);
 340     return s;
 341 }
 342
 343 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file);
 344
 345 static void dump_method(FILE*fo, const char*prefix, const char*attr, const char*type, const char*name, abc_method_t*m, abc_file_t*file)
 346 {
 347     char*return_type = 0;
 348     if(m->return_type)
 349         return_type = multiname_tostring(m->return_type);
 350     else
 351         return_type = strdup("void");
 352     char*paramstr = params_tostring(m->parameters);
 353     fprintf(fo, "%s%s%s %s %s=%s %s (%d params, %d optional)\n", prefix, attr, type, return_type, name, m->name, paramstr,
 354             list_length(m->parameters),
 355             list_length(m->optional_parameters)
 356             );
 357     free(paramstr);paramstr=0;
 358     free(return_type);return_type=0;
 359
 360     abc_method_body_t*c = m->body;
 361     if(!c) {
 362         return;
 363     }
 364
 365     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 366             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 367             c->old.max_scope_depth);
 368
 369
 370     int flags = c->method->flags;
 371     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 372     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 373     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 374     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 375     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 376     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 377     if(flags) fprintf(fo, " %02x", flags);
 378     fprintf(fo, "]");
 379
 380     if(m->trait) {
 381         fprintf(fo, " slot:%d", m->trait->slot_id);
 382     }
 383     fprintf(fo, "\n");
 384
 385
 386     char prefix2[80];
 387     sprintf(prefix2, "%s    ", prefix);
 388     if(c->traits)
 389         traits_dump(fo, prefix, c->traits, file);
 390     fprintf(fo, "%s{\n", prefix);
 391     code_dump(c->code, c->exceptions, file, prefix2, fo);
 392     fprintf(fo, "%s}\n\n", prefix);
 393 }
 394
 395 static void traits_free(trait_list_t*traits)
 396 {
 397     trait_list_t*t = traits;
 398     while(t) {
 399         if(t->trait->name) {
 400             multiname_destroy(t->trait->name);t->trait->name = 0;
 401         }
 402         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 403             multiname_destroy(t->trait->type_name);
 404         }
 405         if(t->trait->value) {
 406             constant_free(t->trait->value);t->trait->value = 0;
 407         }
 408         free(t->trait);t->trait = 0;
 409         t = t->next;
 410     }
 411     list_free(traits);
 412 }
 413
 414 static char trait_is_method(trait_t*trait)
 415 {
 416     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 417             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 418 }
 419
 420 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 421 {
 422     int num_traits = swf_GetU30(tag);
 423     trait_list_t*traits = list_new();
 424     int t;
 425     if(num_traits) {
 426         DEBUG printf("%d traits\n", num_traits);
 427     }
 428
 429     for(t=0;t<num_traits;t++) {
 430         NEW(trait_t,trait);
 431         list_append(traits, trait);
 432
 433         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 434
 435         const char*name = 0;
 436         DEBUG name = multiname_tostring(trait->name);
 437         U8 kind = swf_GetU8(tag);
 438         U8 attributes = kind&0xf0;
 439         kind&=0x0f;
 440         trait->kind = kind;
 441         trait->attributes = attributes;
 442         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 443         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 444             trait->disp_id = swf_GetU30(tag);
 445             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 446             trait->method->trait = trait;
 447             DEBUG printf("  method/getter/setter\n");
 448         } else if(kind == TRAIT_FUNCTION) { // function
 449             trait->slot_id =  swf_GetU30(tag);
 450             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 451             trait->method->trait = trait;
 452         } else if(kind == TRAIT_CLASS) { // class
 453             trait->slot_id = swf_GetU30(tag);
 454             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 455             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 456         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 457             /* a slot is a variable in a class that is shared amonst all instances
 458                of the same type, but which has a unique location in each object
 459                (in other words, slots are non-static, traits are static)
 460              */
 461             trait->slot_id = swf_GetU30(tag);
 462             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 463             int vindex = swf_GetU30(tag);
 464             if(vindex) {
 465                 int vkind = swf_GetU8(tag);
 466                 trait->value = constant_fromindex(pool, vindex, vkind);
 467             }
 468             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 469         } else {
 470             fprintf(stderr, "Can't parse trait type %d\n", kind);
 471         }
 472         if(attributes&0x40) {
 473             int num = swf_GetU30(tag);
 474             int s;
 475             for(s=0;s<num;s++) {
 476                 swf_GetU30(tag); //index into metadata array
 477             }
 478         }
 479     }
 480     return traits;
 481 }
 482
 483 void traits_skip(TAG*tag)
 484 {
 485     int num_traits = swf_GetU30(tag);
 486     int t;
 487     for(t=0;t<num_traits;t++) {
 488         swf_GetU30(tag);
 489         U8 kind = swf_GetU8(tag);
 490         U8 attributes = kind&0xf0;
 491         kind&=0x0f;
 492         swf_GetU30(tag);
 493         swf_GetU30(tag);
 494         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 495             if(swf_GetU30(tag)) swf_GetU8(tag);
 496         } else if(kind>TRAIT_CONST) {
 497             fprintf(stderr, "Can't parse trait type %d\n", kind);
 498         }
 499         if(attributes&0x40) {
 500             int s, num = swf_GetU30(tag);
 501             for(s=0;s<num;s++) swf_GetU30(tag);
 502         }
 503     }
 504 }
 505
 506
 507 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 508 {
 509     if(!traits) {
 510         swf_SetU30(tag, 0);
 511         return;
 512     }
 513     swf_SetU30(tag, list_length(traits));
 514     int s;
 515
 516     while(traits) {
 517         trait_t*trait = traits->trait;
 518
 519         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 520         swf_SetU8(tag, trait->kind|trait->attributes);
 521
 522         swf_SetU30(tag, trait->data1);
 523
 524         if(trait->kind == TRAIT_CLASS) {
 525             swf_SetU30(tag, trait->cls->index);
 526         } else if(trait->kind == TRAIT_GETTER ||
 527                   trait->kind == TRAIT_SETTER ||
 528                   trait->kind == TRAIT_METHOD) {
 529             swf_SetU30(tag, trait->method->index);
 530         } else if(trait->kind == TRAIT_SLOT ||
 531                   trait->kind == TRAIT_CONST) {
 532             int index = pool_register_multiname(pool, trait->type_name);
 533             swf_SetU30(tag, index);
 534         } else  {
 535             swf_SetU30(tag, trait->data2);
 536         }
 537
 538         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 539             int vindex = constant_get_index(pool, trait->value);
 540             swf_SetU30(tag, vindex);
 541             if(vindex) {
 542                 swf_SetU8(tag, trait->value->type);
 543             }
 544         }
 545         if(trait->attributes&0x40) {
 546             // metadata
 547             swf_SetU30(tag, 0);
 548         }
 549         traits = traits->next;
 550     }
 551 }
 552
 553
 554 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file)
 555 {
 556     int t;
 557     while(traits) {
 558         trait_t*trait = traits->trait;
 559         char*name = multiname_tostring(trait->name);
 560         U8 kind = trait->kind;
 561         U8 attributes = trait->attributes;
 562
 563         char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
 564         char* type = "";
 565         if(a==TRAIT_ATTR_FINAL)
 566             type = "final ";
 567         else if(a==TRAIT_ATTR_OVERRIDE)
 568             type = "override ";
 569         else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
 570             type = "final override ";
 571
 572         if(attributes&TRAIT_ATTR_METADATA)
 573             fprintf(fo, "<metadata>");
 574
 575         if(kind == TRAIT_METHOD) {
 576             abc_method_t*m = trait->method;
 577             dump_method(fo, prefix, type, "method", name, m, file);
 578         } else if(kind == TRAIT_GETTER) {
 579             abc_method_t*m = trait->method;
 580             dump_method(fo, prefix, type, "getter", name, m, file);
 581         } else if(kind == TRAIT_SETTER) {
 582             abc_method_t*m = trait->method;
 583             dump_method(fo, prefix, type, "setter", name, m, file);
 584         } else if(kind == TRAIT_FUNCTION) { // function
 585             abc_method_t*m = trait->method;
 586             dump_method(fo, prefix, type, "function", name, m, file);
 587         } else if(kind == TRAIT_CLASS) { // class
 588             abc_class_t*cls = trait->cls;
 589             if(!cls) {
 590                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 591             } else {
 592                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 593             }
 594         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 595             int slot_id = trait->slot_id;
 596             char*type_name = multiname_tostring(trait->type_name);
 597             char*value = constant_tostring(trait->value);
 598             fprintf(fo, "%sslot %d: %s%s %s %s %s\n", prefix, trait->slot_id,
 599                     kind==TRAIT_CONST?"const ":"", type_name, name,
 600                     value?"=":"", value);
 601             if(value) free(value);
 602             free(type_name);
 603         } else {
 604             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 605         }
 606         free(name);
 607         traits=traits->next;
 608     }
 609 }
 610
 611 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 612 {
 613     abc_file_t* file = (abc_file_t*)code;
 614
 615     if(file->name) {
 616         fprintf(fo, "%s#\n", prefix);
 617         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 618         fprintf(fo, "%s#\n", prefix);
 619     }
 620
 621     int t;
 622     for(t=0;t<file->metadata->num;t++) {
 623         const char*entry_name = array_getkey(file->metadata, t);
 624         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 625         int s;
 626         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 627         for(s=0;s<items->num;s++) {
 628             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 629         }
 630         fprintf(fo, "%s#\n", prefix);
 631     }
 632
 633     for(t=0;t<file->classes->num;t++) {
 634         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 635         char prefix2[80];
 636         sprintf(prefix2, "%s    ", prefix);
 637
 638         fprintf(fo, "%s", prefix);
 639         if(cls->flags&1) fprintf(fo, "sealed ");
 640         if(cls->flags&2) fprintf(fo, "final ");
 641         if(cls->flags&4) fprintf(fo, "interface ");
 642         if(cls->flags&8) {
 643             char*s = namespace_tostring(cls->protectedNS);
 644             fprintf(fo, "protectedNS(%s) ", s);
 645             free(s);
 646         }
 647
 648         char*classname = multiname_tostring(cls->classname);
 649         fprintf(fo, "class %s", classname);
 650         free(classname);
 651         if(cls->superclass) {
 652             char*supername = multiname_tostring(cls->superclass);
 653             fprintf(fo, " extends %s", supername);
 654             free(supername);
 655             multiname_list_t*ilist = cls->interfaces;
 656             if(ilist)
 657                 fprintf(fo, " implements");
 658             while(ilist) {
 659                 char*s = multiname_tostring(ilist->multiname);
 660                 fprintf(fo, " %s", s);
 661                 free(s);
 662                 ilist = ilist->next;
 663             }
 664             ilist->next;
 665         }
 666         if(cls->flags&0xf0)
 667             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 668         fprintf(fo, "%s{\n", prefix);
 669
 670         if(cls->static_constructor)
 671             dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file);
 672         traits_dump(fo, prefix2, cls->static_traits, file);
 673
 674         char*n = multiname_tostring(cls->classname);
 675         if(cls->constructor)
 676             dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file);
 677         free(n);
 678         traits_dump(fo, prefix2,cls->traits, file);
 679         fprintf(fo, "%s}\n", prefix);
 680
 681     }
 682     fprintf(fo, "%s\n", prefix);
 683
 684     for(t=0;t<file->scripts->num;t++) {
 685         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 686         dump_method(fo, prefix, "", "initmethod", "init", s->method, file);
 687         traits_dump(fo, prefix, s->traits, file);
 688     }
 689     return file;
 690 }
 691
 692 void* swf_ReadABC(TAG*tag)
 693 {
 694     abc_file_t* file = abc_file_new();
 695     pool_t*pool = pool_new();
 696
 697     swf_SetTagPos(tag, 0);
 698     int t;
 699     if(tag->id == ST_DOABC) {
 700         U32 abcflags = swf_GetU32(tag);
 701         DEBUG printf("flags=%08x\n", abcflags);
 702         char*name= swf_GetString(tag);
 703         file->name = (name&&name[0])?strdup(name):0;
 704     }
 705     U32 version = swf_GetU32(tag);
 706     if(version!=0x002e0010) {
 707         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 708     }
 709
 710     pool_read(pool, tag);
 711
 712     int num_methods = swf_GetU30(tag);
 713     DEBUG printf("%d methods\n", num_methods);
 714     for(t=0;t<num_methods;t++) {
 715         NEW(abc_method_t,m);
 716         int param_count = swf_GetU30(tag);
 717         int return_type_index = swf_GetU30(tag);
 718         if(return_type_index)
 719             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 720         else
 721             m->return_type = 0;
 722
 723         int s;
 724         for(s=0;s<param_count;s++) {
 725             int type_index = swf_GetU30(tag);
 726
 727             /* type_index might be 0, which probably means "..." (varargs) */
 728             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 729             list_append(m->parameters, param);
 730         }
 731
 732         int namenr = swf_GetU30(tag);
 733         if(namenr)
 734             m->name = strdup(pool_lookup_string(pool, namenr));
 735         else
 736             m->name = strdup("");
 737
 738         m->flags = swf_GetU8(tag);
 739
 740         DEBUG printf("method %d) %s %s flags=%02x\n", t, m->name, params_tostring(m->parameters), m->flags);
 741
 742         if(m->flags&0x08) {
 743             m->optional_parameters = list_new();
 744             int num = swf_GetU30(tag);
 745             int s;
 746             for(s=0;s<num;s++) {
 747                 int vindex = swf_GetU30(tag);
 748                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 749                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 750                 list_append(m->optional_parameters, c);
 751             }
 752         }
 753         if(m->flags&0x80) {
 754             /* debug information- not used by avm2 */
 755             multiname_list_t*l = m->parameters;
 756             while(l) {
 757                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 758                 l = l->next;
 759             }
 760         }
 761         m->index = array_length(file->methods);
 762         array_append(file->methods, NO_KEY, m);
 763     }
 764
 765     parse_metadata(tag, file, pool);
 766
 767     /* skip classes, and scripts for now, and do the real parsing later */
 768     int num_classes = swf_GetU30(tag);
 769     int classes_pos = tag->pos;
 770     DEBUG printf("%d classes\n", num_classes);
 771     for(t=0;t<num_classes;t++) {
 772         abc_class_t*cls = malloc(sizeof(abc_class_t));
 773         memset(cls, 0, sizeof(abc_class_t));
 774
 775         swf_GetU30(tag); //classname
 776         swf_GetU30(tag); //supername
 777
 778         array_append(file->classes, NO_KEY, cls);
 779
 780         cls->flags = swf_GetU8(tag);
 781         DEBUG printf("class %d %02x\n", t, cls->flags);
 782         if(cls->flags&8)
 783             swf_GetU30(tag); //protectedNS
 784         int s;
 785         int inum = swf_GetU30(tag); //interface count
 786         cls->interfaces = 0;
 787         for(s=0;s<inum;s++) {
 788             int interface_index = swf_GetU30(tag);
 789             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 790             list_append(cls->interfaces, m);
 791             DEBUG printf("  class %d interface: %s\n", t, m->name);
 792         }
 793
 794         int iinit = swf_GetU30(tag); //iinit
 795         DEBUG printf("--iinit-->%d\n", iinit);
 796         traits_skip(tag);
 797     }
 798     for(t=0;t<num_classes;t++) {
 799         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 800         int cinit = swf_GetU30(tag);
 801         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 802         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 803         traits_skip(tag);
 804     }
 805     int num_scripts = swf_GetU30(tag);
 806     DEBUG printf("%d scripts\n", num_scripts);
 807     for(t=0;t<num_scripts;t++) {
 808         int init = swf_GetU30(tag);
 809         traits_skip(tag);
 810     }
 811
 812     int num_method_bodies = swf_GetU30(tag);
 813     DEBUG printf("%d method bodies\n", num_method_bodies);
 814     for(t=0;t<num_method_bodies;t++) {
 815         int methodnr = swf_GetU30(tag);
 816         if(methodnr >= file->methods->num) {
 817             printf("Invalid method number: %d\n", methodnr);
 818             return 0;
 819         }
 820         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 821         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 822         memset(c, 0, sizeof(abc_method_body_t));
 823         c->old.max_stack = swf_GetU30(tag);
 824         c->old.local_count = swf_GetU30(tag);
 825         c->old.init_scope_depth = swf_GetU30(tag);
 826         c->old.max_scope_depth = swf_GetU30(tag);
 827
 828         c->init_scope_depth = c->old.init_scope_depth;
 829         int code_length = swf_GetU30(tag);
 830
 831         c->method = m;
 832         m->body = c;
 833
 834         int pos = tag->pos + code_length;
 835         codelookup_t*codelookup = 0;
 836         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 837         tag->pos = pos;
 838
 839         int exception_count = swf_GetU30(tag);
 840         int s;
 841         c->exceptions = list_new();
 842         for(s=0;s<exception_count;s++) {
 843             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 844
 845             e->from = code_atposition(codelookup, swf_GetU30(tag));
 846             e->to = code_atposition(codelookup, swf_GetU30(tag));
 847             e->target = code_atposition(codelookup, swf_GetU30(tag));
 848
 849             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 850             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 851             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 852             //if(e->var_name) e->var_name = strdup(e->var_name);
 853             list_append(c->exceptions, e);
 854         }
 855         codelookup_free(codelookup);
 856         c->traits = traits_parse(tag, pool, file);
 857
 858         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 859
 860         array_append(file->method_bodies, NO_KEY, c);
 861     }
 862     if(tag->len - tag->pos) {
 863         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 864         return 0;
 865     }
 866
 867     swf_SetTagPos(tag, classes_pos);
 868     for(t=0;t<num_classes;t++) {
 869         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 870
 871         int classname_index = swf_GetU30(tag);
 872         int superclass_index = swf_GetU30(tag);
 873         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 874         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 875         cls->flags = swf_GetU8(tag);
 876         const char*ns = "";
 877         if(cls->flags&8) {
 878             int ns_index = swf_GetU30(tag);
 879             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 880         }
 881
 882         int num_interfaces = swf_GetU30(tag); //interface count
 883         int s;
 884         for(s=0;s<num_interfaces;s++) {
 885             swf_GetU30(tag);
 886         }
 887         int iinit = swf_GetU30(tag);
 888         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 889         cls->traits = traits_parse(tag, pool, file);
 890     }
 891     for(t=0;t<num_classes;t++) {
 892         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 893         /* SKIP */
 894         swf_GetU30(tag); // cindex
 895         cls->static_traits = traits_parse(tag, pool, file);
 896     }
 897     int num_scripts2 = swf_GetU30(tag);
 898     for(t=0;t<num_scripts2;t++) {
 899         int init = swf_GetU30(tag);
 900         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 901
 902         abc_script_t*s = malloc(sizeof(abc_script_t));
 903         memset(s, 0, sizeof(abc_script_t));
 904         s->method = m;
 905         s->traits = traits_parse(tag, pool, file);
 906         array_append(file->scripts, NO_KEY, s);
 907     }
 908
 909     pool_destroy(pool);
 910     return file;
 911 }
 912
 913 void swf_WriteABC(TAG*abctag, void*code)
 914 {
 915     abc_file_t*file = (abc_file_t*)code;
 916     pool_t*pool = pool_new();
 917
 918     TAG*tmp = swf_InsertTag(0,0);
 919     TAG*tag = tmp;
 920     int t;
 921
 922     /* add method bodies where needed */
 923     for(t=0;t<file->classes->num;t++) {
 924         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 925         if(!c->constructor) {
 926             if(!(c->flags&CLASS_INTERFACE)) {
 927                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 928                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 929                 // don't bother to set m->index
 930                 body->method = m; m->body = body;
 931                 __ returnvoid(body);
 932                 c->constructor = m;
 933             } else {
 934                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 935                 c->constructor = m;
 936             }
 937         }
 938         if(!c->static_constructor) {
 939             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 940             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 941             body->method = m; m->body = body;
 942             __ returnvoid(body);
 943             c->static_constructor = m;
 944         }
 945     }
 946
 947
 948     swf_SetU30(tag, file->methods->num);
 949     /* enumerate classes, methods and method bodies */
 950     for(t=0;t<file->methods->num;t++) {
 951         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 952         m->index = t;
 953     }
 954     for(t=0;t<file->classes->num;t++) {
 955         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 956         c->index = t;
 957     }
 958     for(t=0;t<file->method_bodies->num;t++) {
 959         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 960         m->index = t;
 961     }
 962
 963     /* generate code statistics */
 964     for(t=0;t<file->method_bodies->num;t++) {
 965         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 966         m->stats = code_get_statistics(m->code, m->exceptions);
 967     }
 968
 969     /* level init scope depths: The init scope depth of a method is
 970        always as least as high as the init scope depth of it's surrounding
 971        class.
 972        A method has it's own init_scope_depth if it's an init method
 973        (then its init scope depth is zero), or if it's used as a closure.
 974
 975        Not sure yet what to do with methods which are used at different
 976        locations- e.g. the nullmethod is used all over the place.
 977        EDIT: flashplayer doesn't allow this anyway- a method can only
 978              be used once
 979
 980        Also, I have the strong suspicion that flash player uses only
 981        the difference between max_scope_stack and init_scope_stack, anyway.
 982      */
 983     for(t=0;t<file->classes->num;t++) {
 984         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 985         trait_list_t*traits = c->traits;
 986         if(c->constructor && c->constructor->body &&
 987            c->constructor->body->init_scope_depth < c->init_scope_depth) {
 988            c->constructor->body->init_scope_depth = c->init_scope_depth;
 989         }
 990         if(c->static_constructor && c->static_constructor->body &&
 991            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
 992            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
 993         }
 994         while(traits) {
 995             trait_t*trait = traits->trait;
 996             if(trait_is_method(trait) && trait->method->body) {
 997                 abc_method_body_t*body = trait->method->body;
 998                 if(body->init_scope_depth < c->init_scope_depth) {
 999                    body->init_scope_depth = c->init_scope_depth;
1000                 }
1001             }
1002             traits = traits->next;
1003         }
1004     }
1005
1006     for(t=0;t<file->methods->num;t++) {
1007         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1008         int n = 0;
1009         multiname_list_t*l = m->parameters;
1010         int num_params = list_length(m->parameters);
1011         swf_SetU30(tag, num_params);
1012         if(m->return_type)
1013             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1014         else
1015             swf_SetU30(tag, 0);
1016         int s;
1017         while(l) {
1018             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1019             l = l->next;
1020         }
1021         if(m->name) {
1022             swf_SetU30(tag, pool_register_string(pool, m->name));
1023         } else {
1024             swf_SetU30(tag, 0);
1025         }
1026
1027         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1028         if(m->optional_parameters)
1029             flags |= METHOD_HAS_OPTIONAL;
1030         if(m->body) {
1031             flags |= m->body->stats->flags;
1032         }
1033
1034         swf_SetU8(tag, flags);
1035         if(flags&METHOD_HAS_OPTIONAL) {
1036             swf_SetU30(tag, list_length(m->optional_parameters));
1037             constant_list_t*l = m->optional_parameters;
1038             while(l) {
1039                 swf_SetU30(tag, constant_get_index(pool, l->constant));
1040                 swf_SetU8(tag, l->constant->type);
1041                 l = l->next;
1042             }
1043         }
1044     }
1045
1046     /* write metadata */
1047     swf_SetU30(tag, file->metadata->num);
1048     for(t=0;t<file->metadata->num;t++) {
1049         const char*entry_name = array_getkey(file->metadata, t);
1050         swf_SetU30(tag, pool_register_string(pool, entry_name));
1051         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1052         swf_SetU30(tag, items->num);
1053         int s;
1054         for(s=0;s<items->num;s++) {
1055             int i1 = pool_register_string(pool, array_getkey(items, s));
1056             int i2 = pool_register_string(pool, array_getvalue(items, s));
1057             swf_SetU30(tag, i1);
1058             swf_SetU30(tag, i2);
1059         }
1060     }
1061
1062     swf_SetU30(tag, file->classes->num);
1063     for(t=0;t<file->classes->num;t++) {
1064         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1065
1066         int classname_index = pool_register_multiname(pool, c->classname);
1067         int superclass_index = pool_register_multiname(pool, c->superclass);
1068
1069         swf_SetU30(tag, classname_index);
1070         swf_SetU30(tag, superclass_index);
1071
1072         swf_SetU8(tag, c->flags); // flags
1073         if(c->flags&0x08) {
1074             int ns_index = pool_register_namespace(pool, c->protectedNS);
1075             swf_SetU30(tag, ns_index);
1076         }
1077
1078         swf_SetU30(tag, list_length(c->interfaces));
1079         multiname_list_t*interface= c->interfaces;
1080         while(interface) {
1081             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1082             interface = interface->next;
1083         }
1084
1085         assert(c->constructor);
1086         swf_SetU30(tag, c->constructor->index);
1087
1088         traits_write(pool, tag, c->traits);
1089     }
1090     for(t=0;t<file->classes->num;t++) {
1091         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1092         assert(c->static_constructor);
1093         swf_SetU30(tag, c->static_constructor->index);
1094
1095         traits_write(pool, tag, c->static_traits);
1096     }
1097
1098     swf_SetU30(tag, file->scripts->num);
1099     for(t=0;t<file->scripts->num;t++) {
1100         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1101         swf_SetU30(tag, s->method->index); //!=t!
1102         traits_write(pool, tag, s->traits);
1103     }
1104
1105     swf_SetU30(tag, file->method_bodies->num);
1106     for(t=0;t<file->method_bodies->num;t++) {
1107         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1108         abc_method_t*m = c->method;
1109         swf_SetU30(tag, m->index);
1110
1111         //swf_SetU30(tag, c->old.max_stack);
1112         //swf_SetU30(tag, c->old.local_count);
1113         //swf_SetU30(tag, c->old.init_scope_depth);
1114         //swf_SetU30(tag, c->old.max_scope_depth);
1115
1116         swf_SetU30(tag, c->stats->max_stack);
1117
1118         int param_num = list_length(c->method->parameters)+1;
1119         if(c->method->flags&METHOD_NEED_REST)
1120             param_num++;
1121         if(param_num <= c->stats->local_count)
1122             swf_SetU30(tag, c->stats->local_count);
1123         else
1124             swf_SetU30(tag, param_num);
1125
1126         swf_SetU30(tag, c->init_scope_depth);
1127         swf_SetU30(tag, c->stats->max_scope_depth+
1128                         c->init_scope_depth);
1129
1130         code_write(tag, c->code, pool, file);
1131
1132         swf_SetU30(tag, list_length(c->exceptions));
1133         abc_exception_list_t*l = c->exceptions;
1134         while(l) {
1135             // warning: assumes "pos" in each code_t is up-to-date
1136             swf_SetU30(tag, l->abc_exception->from->pos);
1137             swf_SetU30(tag, l->abc_exception->to->pos);
1138             swf_SetU30(tag, l->abc_exception->target->pos);
1139             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1140             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1141             l = l->next;
1142         }
1143
1144         traits_write(pool, tag, c->traits);
1145     }
1146
1147     /* free temporary codestat data again. Notice: If we were to write this
1148        file multiple times, this can also be shifted to abc_file_free() */
1149     for(t=0;t<file->method_bodies->num;t++) {
1150         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1151         codestats_free(m->stats);m->stats=0;
1152     }
1153
1154     // --- start to write real tag --
1155
1156     tag = abctag;
1157
1158     if(tag->id == ST_DOABC) {
1159         swf_SetU32(tag, file->flags); // flags
1160         swf_SetString(tag, file->name);
1161     }
1162
1163     swf_SetU16(tag, 0x10); //version
1164     swf_SetU16(tag, 0x2e);
1165
1166     pool_write(pool, tag);
1167
1168     swf_SetBlock(tag, tmp->data, tmp->len);
1169
1170     swf_DeleteTag(0, tmp);
1171     pool_destroy(pool);
1172 }
1173
1174 void abc_file_free(abc_file_t*file)
1175 {
1176     int t;
1177     if(file->metadata) {
1178         for(t=0;t<file->metadata->num;t++) {
1179             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1180             int s;
1181             for(s=0;s<items->num;s++) {
1182                 free(array_getvalue(items, s));
1183             }
1184             array_free(items);
1185         }
1186         array_free(file->metadata);file->metadata=0;
1187     }
1188
1189     for(t=0;t<file->methods->num;t++) {
1190         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1191
1192         multiname_list_t*param = m->parameters;
1193         while(param) {
1194             multiname_destroy(param->multiname);param->multiname=0;
1195             param = param->next;
1196         }
1197         list_free(m->parameters);m->parameters=0;
1198
1199         constant_list_t*opt = m->optional_parameters;
1200         while(opt) {
1201             constant_free(opt->constant);opt->constant=0;
1202             opt = opt->next;
1203         }
1204         list_free(m->optional_parameters);m->optional_parameters=0;
1205
1206         if(m->name) {
1207             free((void*)m->name);m->name=0;
1208         }
1209         if(m->return_type) {
1210             multiname_destroy(m->return_type);
1211         }
1212         free(m);
1213     }
1214     array_free(file->methods);file->methods=0;
1215
1216     for(t=0;t<file->classes->num;t++) {
1217         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1218         traits_free(cls->traits);cls->traits=0;
1219         traits_free(cls->static_traits);cls->static_traits=0;
1220
1221         if(cls->classname) {
1222             multiname_destroy(cls->classname);
1223         }
1224         if(cls->superclass) {
1225             multiname_destroy(cls->superclass);
1226         }
1227
1228         multiname_list_t*i = cls->interfaces;
1229         while(i) {
1230             multiname_destroy(i->multiname);i->multiname=0;
1231             i = i->next;
1232         }
1233         list_free(cls->interfaces);cls->interfaces=0;
1234
1235         if(cls->protectedNS) {
1236             namespace_destroy(cls->protectedNS);
1237         }
1238         free(cls);
1239     }
1240     array_free(file->classes);file->classes=0;
1241
1242     for(t=0;t<file->scripts->num;t++) {
1243         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1244         traits_free(s->traits);s->traits=0;
1245         free(s);
1246     }
1247     array_free(file->scripts);file->scripts=0;
1248
1249     for(t=0;t<file->method_bodies->num;t++) {
1250         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1251         code_free(body->code);body->code=0;
1252         traits_free(body->traits);body->traits=0;
1253
1254         abc_exception_list_t*ee = body->exceptions;
1255         while(ee) {
1256             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1257             e->from = e->to = e->target = 0;
1258             multiname_destroy(e->exc_type);e->exc_type=0;
1259             multiname_destroy(e->var_name);e->var_name=0;
1260             free(e);
1261             ee=ee->next;
1262         }
1263         list_free(body->exceptions);body->exceptions=0;
1264
1265         free(body);
1266     }
1267     array_free(file->method_bodies);file->method_bodies=0;
1268
1269     if(file->name) {
1270         free((void*)file->name);file->name=0;
1271     }
1272
1273     free(file);
1274 }
1275
1276 void swf_FreeABC(void*code)
1277 {
1278     abc_file_t*file= (abc_file_t*)code;
1279     abc_file_free(file);
1280 }
1281
1282 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1283 {
1284     int num_frames = 0;
1285     int has_buttons = 0;
1286     TAG*tag=swf->firstTag;
1287     while(tag) {
1288         if(tag->id == ST_SHOWFRAME)
1289             num_frames++;
1290         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1291             has_buttons = 1;
1292         tag = tag->next;
1293     }
1294
1295     abc_file_t*file = abc_file_new();
1296     abc_method_body_t*c = 0;
1297
1298     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1299     abc_class_protectedNS(cls, "rfx:MainTimeline");
1300
1301     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1302
1303     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1304     swf_SetU16(tag, 1);
1305     swf_SetU16(tag, 0);
1306     swf_SetString(tag, "rfx.MainTimeline");
1307
1308     c = abc_class_getstaticconstructor(cls, 0)->body;
1309     c->old.max_stack = 1;
1310     c->old.local_count = 1;
1311     c->old.init_scope_depth = 9;
1312     c->old.max_scope_depth = 10;
1313
1314     __ getlocal_0(c);
1315     __ pushscope(c);
1316     __ returnvoid(c);
1317
1318     c = abc_class_getconstructor(cls, 0)->body;
1319     c->old.max_stack = 3;
1320     c->old.local_count = 1;
1321     c->old.init_scope_depth = 10;
1322     c->old.max_scope_depth = 11;
1323
1324     debugfile(c, "constructor.as");
1325
1326     __ getlocal_0(c);
1327     __ pushscope(c);
1328
1329     __ getlocal_0(c);
1330     __ constructsuper(c,0);
1331
1332     __ getlex(c, "[package]flash.system::Security");
1333     __ pushstring(c, "*");
1334     __ callpropvoid(c, "[package]::allowDomain", 1);
1335
1336     if(stop_each_frame || has_buttons) {
1337         int frame = 0;
1338         tag = swf->firstTag;
1339         abc_method_body_t*f = 0; //frame script
1340         while(tag && tag->id!=ST_END) {
1341             char framename[80];
1342             char needs_framescript=0;
1343             char buttonname[80];
1344             char functionname[80];
1345             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1346
1347             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1348                 /* make the contructor add a frame script */
1349                 __ findpropstrict(c,"[package]::addFrameScript");
1350                 __ pushbyte(c,frame);
1351                 __ getlex(c,framename);
1352                 __ callpropvoid(c,"[package]::addFrameScript",2);
1353
1354                 f = abc_class_method(cls, 0, multiname_fromstring(framename))->body;
1355                 f->old.max_stack = 3;
1356                 f->old.local_count = 1;
1357                 f->old.init_scope_depth = 10;
1358                 f->old.max_scope_depth = 11;
1359                 __ debugfile(f, "framescript.as");
1360                 __ debugline(f, 1);
1361                 __ getlocal_0(f);
1362                 __ pushscope(f);
1363                 if(stop_each_frame) {
1364                     __ findpropstrict(f, "[package]::stop");
1365                     __ callpropvoid(f, "[package]::stop", 0);
1366                 }
1367             }
1368
1369             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1370                 U16 id = swf_GetDefineID(tag);
1371                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1372                 __ getlex(f,buttonname);
1373                 __ getlex(f,"flash.events::MouseEvent");
1374                 __ getproperty(f, "::CLICK");
1375                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1376                 __ getlex(f,functionname);
1377                 __ callpropvoid(f, "::addEventListener" ,2);
1378
1379                 needs_framescript = 1;
1380
1381                 abc_method_body_t*h =
1382                     abc_class_method(cls, 0, multiname_fromstring(functionname))->body;
1383                 list_append(h->method->parameters, multiname_fromstring("flash.events::MouseEvent"));
1384
1385                 h->old.max_stack = 6;
1386                 h->old.local_count = 2;
1387                 h->old.init_scope_depth = 10;
1388                 h->old.max_scope_depth = 11;
1389                 __ getlocal_0(h);
1390                 __ pushscope(h);
1391
1392                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1393                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1394                     int framenr = GET16(oldaction->data);
1395                     if(framenr>254) {
1396                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1397                     }
1398                     if(!events) {
1399                         __ findpropstrict(h,"[package]::gotoAndStop");
1400                         __ pushbyte(h,framenr+1);
1401                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1402                     } else {
1403                         char framename[80];
1404                         sprintf(framename, "frame%d", framenr);
1405                         __ getlocal_0(h); //this
1406                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1407                         __ pushstring(h, "link");
1408                         __ pushtrue(h);
1409                         __ pushtrue(h);
1410                         __ pushstring(h, framename);
1411                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1412                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1413                     }
1414                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1415                     if(!events) {
1416                         __ findpropstrict(h,"flash.net::navigateToURL");
1417                         __ findpropstrict(h,"flash.net::URLRequest");
1418                         // TODO: target _blank
1419                         __ pushstring(h,oldaction->data); //url
1420                         __ constructprop(h,"flash.net::URLRequest", 1);
1421                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1422                     } else {
1423                         __ getlocal_0(h); //this
1424                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1425                         __ pushstring(h, "link");
1426                         __ pushtrue(h);
1427                         __ pushtrue(h);
1428                         __ pushstring(h,oldaction->data); //url
1429                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1430                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1431                     }
1432                 } else if(oldaction) {
1433                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1434                 }
1435                 __ returnvoid(h);
1436                 swf_ActionFree(oldaction);
1437             }
1438             if(tag->id == ST_SHOWFRAME) {
1439                 if(f) {
1440                     __ returnvoid(f);
1441                     f = 0;
1442                 }
1443                 frame++;
1444             }
1445             tag = tag->next;
1446         }
1447         if(f) {
1448             __ returnvoid(f);
1449         }
1450     }
1451     __ returnvoid(c);
1452
1453     tag = swf->firstTag;
1454     while(tag) {
1455         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1456             char buttonname[80];
1457             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1458             multiname_t*s = multiname_fromstring(buttonname);
1459             abc_class_slot(cls, multiname_fromstring(buttonname), s);
1460         }
1461         tag = tag->next;
1462     }
1463
1464
1465     abc_script_t*s = abc_initscript(file, 0);
1466     c = s->method->body;
1467     c->old.max_stack = 2;
1468     c->old.local_count = 1;
1469     c->old.init_scope_depth = 1;
1470     c->old.max_scope_depth = 9;
1471
1472     __ getlocal_0(c);
1473     __ pushscope(c);
1474     __ getscopeobject(c, 0);
1475     __ getlex(c,"::Object");
1476     __ pushscope(c);
1477     __ getlex(c,"flash.events::EventDispatcher");
1478     __ pushscope(c);
1479     __ getlex(c,"flash.display::DisplayObject");
1480     __ pushscope(c);
1481     __ getlex(c,"flash.display::InteractiveObject");
1482     __ pushscope(c);
1483     __ getlex(c,"flash.display::DisplayObjectContainer");
1484     __ pushscope(c);
1485     __ getlex(c,"flash.display::Sprite");
1486     __ pushscope(c);
1487     __ getlex(c,"flash.display::MovieClip");
1488     __ pushscope(c);
1489     __ getlex(c,"flash.display::MovieClip");
1490     __ newclass(c,cls);
1491     __ popscope(c);
1492     __ popscope(c);
1493     __ popscope(c);
1494     __ popscope(c);
1495     __ popscope(c);
1496     __ popscope(c);
1497     __ popscope(c);
1498     __ initproperty(c,"rfx::MainTimeline");
1499     __ returnvoid(c);
1500
1501     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1502     multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1503     abc_initscript_addClassTrait(s, classname, cls);
1504     multiname_destroy(classname);
1505
1506     swf_WriteABC(abctag, file);
1507 }
1508