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