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 abc_method_t* abc_method_new(abc_file_t*file, 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 = abc_method_new(cls->file, 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 = abc_method_new(cls->file, 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
 231 trait_t*trait_new_member(trait_list_t**traits, multiname_t*type, multiname_t*name,constant_t*v)
 232 {
 233     int kind = TRAIT_SLOT;
 234     trait_t*trait = malloc(sizeof(trait_t));
 235     memset(trait, 0, sizeof(trait_t));
 236     trait->kind = kind&0x0f;
 237     trait->attributes = kind&0xf0;
 238     trait->name = name;
 239     trait->type_name = type;
 240
 241     trait->slot_id = list_length(*traits)+1;
 242     trait_list_t*l = *traits;
 243     list_append_(traits, trait);
 244     return trait;
 245 }
 246 trait_t*trait_new_method(trait_list_t**traits, multiname_t*name, abc_method_t*m)
 247 {
 248     int type = TRAIT_METHOD;
 249     trait_t*trait = malloc(sizeof(trait_t));
 250     memset(trait, 0, sizeof(trait_t));
 251     trait->kind = type&0x0f;
 252     trait->attributes = type&0xf0;
 253     trait->name = name;
 254     trait->method = m;
 255
 256     /* start assigning traits at position #1.
 257        Weird things happen when assigning slot 0- slot 0 and 1 seem
 258        to be identical */
 259     trait->slot_id = list_length(*traits)+1;
 260     list_append_(traits, trait);
 261     return trait;
 262 }
 263
 264 abc_method_t* abc_class_method(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 265 {
 266     abc_file_t*file = cls->file;
 267     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 268     m->trait = trait_new_method(&cls->traits, multiname_clone(name), m);
 269     return m;
 270 }
 271 abc_method_t* abc_class_staticmethod(abc_class_t*cls, multiname_t*returntype, multiname_t*name)
 272 {
 273     abc_file_t*file = cls->file;
 274     abc_method_t* m = abc_method_new(cls->file, returntype, !(cls->flags&CLASS_INTERFACE));
 275     m->trait = trait_new_method(&cls->static_traits, multiname_clone(name), m);
 276     return m;
 277 }
 278
 279 trait_t* abc_class_slot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 280 {
 281     abc_file_t*file = cls->file;
 282     multiname_t*m_name = multiname_clone(name);
 283     multiname_t*m_type = multiname_clone(type);
 284     trait_t*t = trait_new_member(&cls->traits, m_type, m_name, 0);
 285     return t;
 286 }
 287 trait_t* abc_class_staticslot(abc_class_t*cls, multiname_t*name, multiname_t*type)
 288 {
 289     abc_file_t*file = cls->file;
 290     multiname_t*m_name = multiname_clone(name);
 291     multiname_t*m_type = multiname_clone(type);
 292     trait_t*t = trait_new_member(&cls->static_traits, m_type, m_name, 0);
 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 = abc_method_new(file, 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, dict_t*methods_seen);
 344
 345 static void dump_method(FILE*fo, const char*prefix,
 346                                  const char*attr,
 347                                  const char*type,
 348                                  const char*name,
 349                                  abc_method_t*m, abc_file_t*file, dict_t*methods_seen)
 350 {
 351     if(methods_seen)
 352         dict_put(methods_seen, m, 0);
 353
 354     char*return_type = 0;
 355     if(m->return_type)
 356         return_type = multiname_tostring(m->return_type);
 357     else
 358         return_type = strdup("void");
 359     char*paramstr = params_tostring(m->parameters);
 360     fprintf(fo, "%s%s%s %s %s=%s %s (%d params, %d optional)\n", prefix, attr, type, return_type, name, m->name, paramstr,
 361             list_length(m->parameters),
 362             list_length(m->optional_parameters)
 363             );
 364     free(paramstr);paramstr=0;
 365     free(return_type);return_type=0;
 366
 367     abc_method_body_t*c = m->body;
 368     if(!c) {
 369         return;
 370     }
 371
 372     fprintf(fo, "%s[stack:%d locals:%d scope:%d-%d flags:",
 373             prefix, c->old.max_stack, c->old.local_count, c->old.init_scope_depth,
 374             c->old.max_scope_depth);
 375
 376
 377     int flags = c->method->flags;
 378     if(flags&METHOD_NEED_ARGUMENTS) {fprintf(fo, " need_arguments");flags&=~METHOD_NEED_ARGUMENTS;}
 379     if(flags&METHOD_NEED_ACTIVATION) {fprintf(fo, " need_activation");flags&=~METHOD_NEED_ACTIVATION;}
 380     if(flags&METHOD_NEED_REST) {fprintf(fo, " need_rest");flags&=~METHOD_NEED_REST;}
 381     if(flags&METHOD_HAS_OPTIONAL) {fprintf(fo, " has_optional");flags&=~METHOD_HAS_OPTIONAL;}
 382     if(flags&METHOD_SET_DXNS) {fprintf(fo, " set_dxns");flags&=~METHOD_SET_DXNS;}
 383     if(flags&METHOD_HAS_PARAM_NAMES) {fprintf(fo, " has_param_names");flags&=~METHOD_HAS_PARAM_NAMES;}
 384     if(flags) fprintf(fo, " %02x", flags);
 385     fprintf(fo, "]");
 386
 387     if(m->trait) {
 388         fprintf(fo, " slot:%d", m->trait->slot_id);
 389     }
 390     fprintf(fo, "\n");
 391
 392
 393     char prefix2[80];
 394     sprintf(prefix2, "%s    ", prefix);
 395     if(c->traits)
 396         traits_dump(fo, prefix, c->traits, file, methods_seen);
 397     fprintf(fo, "%s{\n", prefix);
 398     code_dump(c->code, c->exceptions, file, prefix2, fo);
 399     fprintf(fo, "%s}\n\n", prefix);
 400 }
 401
 402 static void traits_free(trait_list_t*traits)
 403 {
 404     trait_list_t*t = traits;
 405     while(t) {
 406         if(t->trait->name) {
 407             multiname_destroy(t->trait->name);t->trait->name = 0;
 408         }
 409         if(t->trait->kind == TRAIT_SLOT || t->trait->kind == TRAIT_CONST) {
 410             multiname_destroy(t->trait->type_name);
 411         }
 412         if(t->trait->value) {
 413             constant_free(t->trait->value);t->trait->value = 0;
 414         }
 415         free(t->trait);t->trait = 0;
 416         t = t->next;
 417     }
 418     list_free(traits);
 419 }
 420
 421 static char trait_is_method(trait_t*trait)
 422 {
 423     return (trait->kind == TRAIT_METHOD || trait->kind == TRAIT_GETTER ||
 424             trait->kind == TRAIT_SETTER || trait->kind == TRAIT_FUNCTION);
 425 }
 426
 427 static trait_list_t* traits_parse(TAG*tag, pool_t*pool, abc_file_t*file)
 428 {
 429     int num_traits = swf_GetU30(tag);
 430     trait_list_t*traits = list_new();
 431     int t;
 432     if(num_traits) {
 433         DEBUG printf("%d traits\n", num_traits);
 434     }
 435
 436     for(t=0;t<num_traits;t++) {
 437         NEW(trait_t,trait);
 438         list_append(traits, trait);
 439
 440         trait->name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag))); // always a QName (ns,name)
 441
 442         const char*name = 0;
 443         DEBUG name = multiname_tostring(trait->name);
 444         U8 kind = swf_GetU8(tag);
 445         U8 attributes = kind&0xf0;
 446         kind&=0x0f;
 447         trait->kind = kind;
 448         trait->attributes = attributes;
 449         DEBUG printf("  trait %d) %s type=%02x\n", t, name, kind);
 450         if(kind == TRAIT_METHOD || kind == TRAIT_GETTER || kind == TRAIT_SETTER) { // method / getter / setter
 451             trait->disp_id = swf_GetU30(tag);
 452             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 453             trait->method->trait = trait;
 454             DEBUG printf("  method/getter/setter\n");
 455         } else if(kind == TRAIT_FUNCTION) { // function
 456             trait->slot_id =  swf_GetU30(tag);
 457             trait->method = (abc_method_t*)array_getvalue(file->methods, swf_GetU30(tag));
 458             trait->method->trait = trait;
 459         } else if(kind == TRAIT_CLASS) { // class
 460             trait->slot_id = swf_GetU30(tag);
 461             trait->cls = (abc_class_t*)array_getvalue(file->classes, swf_GetU30(tag));
 462             DEBUG printf("  class %s %d %d\n", name, trait->slot_id, trait->cls);
 463         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 464             /* a slot is a variable in a class that is shared amonst all instances
 465                of the same type, but which has a unique location in each object
 466                (in other words, slots are non-static, traits are static)
 467              */
 468             trait->slot_id = swf_GetU30(tag);
 469             trait->type_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 470             int vindex = swf_GetU30(tag);
 471             if(vindex) {
 472                 int vkind = swf_GetU8(tag);
 473                 trait->value = constant_fromindex(pool, vindex, vkind);
 474             }
 475             DEBUG printf("  slot %s %d %s (%s)\n", name, trait->slot_id, trait->type_name->name, constant_tostring(trait->value));
 476         } else {
 477             fprintf(stderr, "Can't parse trait type %d\n", kind);
 478         }
 479         if(attributes&0x40) {
 480             int num = swf_GetU30(tag);
 481             int s;
 482             for(s=0;s<num;s++) {
 483                 swf_GetU30(tag); //index into metadata array
 484             }
 485         }
 486     }
 487     return traits;
 488 }
 489
 490 void traits_skip(TAG*tag)
 491 {
 492     int num_traits = swf_GetU30(tag);
 493     int t;
 494     for(t=0;t<num_traits;t++) {
 495         swf_GetU30(tag);
 496         U8 kind = swf_GetU8(tag);
 497         U8 attributes = kind&0xf0;
 498         kind&=0x0f;
 499         swf_GetU30(tag);
 500         swf_GetU30(tag);
 501         if(kind == TRAIT_SLOT || kind == TRAIT_CONST) {
 502             if(swf_GetU30(tag)) swf_GetU8(tag);
 503         } else if(kind>TRAIT_CONST) {
 504             fprintf(stderr, "Can't parse trait type %d\n", kind);
 505         }
 506         if(attributes&0x40) {
 507             int s, num = swf_GetU30(tag);
 508             for(s=0;s<num;s++) swf_GetU30(tag);
 509         }
 510     }
 511 }
 512
 513
 514 static void traits_write(pool_t*pool, TAG*tag, trait_list_t*traits)
 515 {
 516     if(!traits) {
 517         swf_SetU30(tag, 0);
 518         return;
 519     }
 520     swf_SetU30(tag, list_length(traits));
 521     int s;
 522
 523     while(traits) {
 524         trait_t*trait = traits->trait;
 525
 526         swf_SetU30(tag, pool_register_multiname(pool, trait->name));
 527         swf_SetU8(tag, trait->kind|trait->attributes);
 528
 529         swf_SetU30(tag, trait->data1);
 530
 531         if(trait->kind == TRAIT_CLASS) {
 532             swf_SetU30(tag, trait->cls->index);
 533         } else if(trait->kind == TRAIT_GETTER ||
 534                   trait->kind == TRAIT_SETTER ||
 535                   trait->kind == TRAIT_METHOD) {
 536             swf_SetU30(tag, trait->method->index);
 537         } else if(trait->kind == TRAIT_SLOT ||
 538                   trait->kind == TRAIT_CONST) {
 539             int index = pool_register_multiname(pool, trait->type_name);
 540             swf_SetU30(tag, index);
 541         } else  {
 542             swf_SetU30(tag, trait->data2);
 543         }
 544
 545         if(trait->kind == TRAIT_SLOT || trait->kind == TRAIT_CONST) {
 546             int vindex = constant_get_index(pool, trait->value);
 547             swf_SetU30(tag, vindex);
 548             if(vindex) {
 549                 swf_SetU8(tag, trait->value->type);
 550             }
 551         }
 552         if(trait->attributes&0x40) {
 553             // metadata
 554             swf_SetU30(tag, 0);
 555         }
 556         traits = traits->next;
 557     }
 558 }
 559
 560
 561 static void traits_dump(FILE*fo, const char*prefix, trait_list_t*traits, abc_file_t*file, dict_t*methods_seen)
 562 {
 563     int t;
 564     while(traits) {
 565         trait_t*trait = traits->trait;
 566         char*name = multiname_tostring(trait->name);
 567         U8 kind = trait->kind;
 568         U8 attributes = trait->attributes;
 569
 570         char a = attributes & (TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL);
 571         char* type = "";
 572         if(a==TRAIT_ATTR_FINAL)
 573             type = "final ";
 574         else if(a==TRAIT_ATTR_OVERRIDE)
 575             type = "override ";
 576         else if(a==(TRAIT_ATTR_OVERRIDE|TRAIT_ATTR_FINAL))
 577             type = "final override ";
 578
 579         if(attributes&TRAIT_ATTR_METADATA)
 580             fprintf(fo, "<metadata>");
 581
 582         if(kind == TRAIT_METHOD) {
 583             abc_method_t*m = trait->method;
 584             dump_method(fo, prefix, type, "method", name, m, file, methods_seen);
 585         } else if(kind == TRAIT_GETTER) {
 586             abc_method_t*m = trait->method;
 587             dump_method(fo, prefix, type, "getter", name, m, file, methods_seen);
 588         } else if(kind == TRAIT_SETTER) {
 589             abc_method_t*m = trait->method;
 590             dump_method(fo, prefix, type, "setter", name, m, file, methods_seen);
 591         } else if(kind == TRAIT_FUNCTION) { // function
 592             abc_method_t*m = trait->method;
 593             dump_method(fo, prefix, type, "function", name, m, file, methods_seen);
 594         } else if(kind == TRAIT_CLASS) { // class
 595             abc_class_t*cls = trait->cls;
 596             if(!cls) {
 597                 fprintf(fo, "%sslot %d: class %s=00000000\n", prefix, trait->slot_id, name);
 598             } else {
 599                 fprintf(fo, "%sslot %d: class %s=%s\n", prefix, trait->slot_id, name, cls->classname->name);
 600             }
 601         } else if(kind == TRAIT_SLOT || kind == TRAIT_CONST) { // slot, const
 602             int slot_id = trait->slot_id;
 603             char*type_name = multiname_tostring(trait->type_name);
 604             char*value = constant_tostring(trait->value);
 605             fprintf(fo, "%sslot %d: %s%s %s %s %s\n", prefix, trait->slot_id,
 606                     kind==TRAIT_CONST?"const ":"", type_name, name,
 607                     value?"=":"", value);
 608             if(value) free(value);
 609             free(type_name);
 610         } else {
 611             fprintf(fo, "%s    can't dump trait type %d\n", prefix, kind);
 612         }
 613         free(name);
 614         traits=traits->next;
 615     }
 616 }
 617
 618 void* swf_DumpABC(FILE*fo, void*code, char*prefix)
 619 {
 620     abc_file_t* file = (abc_file_t*)code;
 621
 622     if(file->name) {
 623         fprintf(fo, "%s#\n", prefix);
 624         fprintf(fo, "%s#name: %s\n", prefix, file->name);
 625         fprintf(fo, "%s#\n", prefix);
 626     }
 627
 628     int t;
 629     for(t=0;t<file->metadata->num;t++) {
 630         const char*entry_name = array_getkey(file->metadata, t);
 631         fprintf(fo, "%s#Metadata \"%s\":\n", prefix, entry_name);
 632         int s;
 633         array_t*items = (array_t*)array_getvalue(file->metadata, t);
 634         for(s=0;s<items->num;s++) {
 635             fprintf(fo, "%s#  %s=%s\n", prefix, array_getkey(items, s), array_getvalue(items,s));
 636         }
 637         fprintf(fo, "%s#\n", prefix);
 638     }
 639
 640     dict_t*methods_seen = dict_new2(&ptr_type);
 641     for(t=0;t<file->classes->num;t++) {
 642         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 643         char prefix2[80];
 644         sprintf(prefix2, "%s    ", prefix);
 645
 646         fprintf(fo, "%s", prefix);
 647         if(cls->flags&1) fprintf(fo, "sealed ");
 648         if(cls->flags&2) fprintf(fo, "final ");
 649         if(cls->flags&4) fprintf(fo, "interface ");
 650         if(cls->flags&8) {
 651             char*s = namespace_tostring(cls->protectedNS);
 652             fprintf(fo, "protectedNS(%s) ", s);
 653             free(s);
 654         }
 655
 656         char*classname = multiname_tostring(cls->classname);
 657         fprintf(fo, "class %s", classname);
 658         free(classname);
 659         if(cls->superclass) {
 660             char*supername = multiname_tostring(cls->superclass);
 661             fprintf(fo, " extends %s", supername);
 662             free(supername);
 663             multiname_list_t*ilist = cls->interfaces;
 664             if(ilist)
 665                 fprintf(fo, " implements");
 666             while(ilist) {
 667                 char*s = multiname_tostring(ilist->multiname);
 668                 fprintf(fo, " %s", s);
 669                 free(s);
 670                 ilist = ilist->next;
 671             }
 672             ilist->next;
 673         }
 674         if(cls->flags&0xf0)
 675             fprintf(fo, "extra flags=%02x\n", cls->flags&0xf0);
 676         fprintf(fo, "%s{\n", prefix);
 677
 678         dict_put(methods_seen, cls->static_constructor, 0);
 679         dict_put(methods_seen, cls->constructor, 0);
 680
 681         if(cls->static_constructor) {
 682             dump_method(fo, prefix2, "", "staticconstructor", "", cls->static_constructor, file, methods_seen);
 683         }
 684         traits_dump(fo, prefix2, cls->static_traits, file, methods_seen);
 685
 686         char*n = multiname_tostring(cls->classname);
 687         if(cls->constructor)
 688             dump_method(fo, prefix2, "", "constructor", n, cls->constructor, file, methods_seen);
 689         free(n);
 690         traits_dump(fo, prefix2,cls->traits, file, methods_seen);
 691         fprintf(fo, "%s}\n", prefix);
 692     }
 693     fprintf(fo, "%s\n", prefix);
 694
 695     for(t=0;t<file->scripts->num;t++) {
 696         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
 697         dump_method(fo, prefix, "", "initmethod", "init", s->method, file, methods_seen);
 698         traits_dump(fo, prefix, s->traits, file, methods_seen);
 699     }
 700
 701     char extra=0;
 702     for(t=0;t<file->methods->num;t++) {
 703         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 704         if(!dict_contains(methods_seen, m)) {
 705             if(!extra) {
 706                 extra=1;
 707                 fprintf(fo, "\n");
 708                 fprintf(fo, "%s//internal (non-class non-script) methods:\n", prefix);
 709             }
 710             char name[18];
 711             sprintf(name, "%08x ", m);
 712             dump_method(fo, prefix, "", "internalmethod", name, m, file, methods_seen);
 713         }
 714     }
 715     dict_destroy(methods_seen);
 716
 717     return file;
 718 }
 719
 720 void* swf_ReadABC(TAG*tag)
 721 {
 722     abc_file_t* file = abc_file_new();
 723     pool_t*pool = pool_new();
 724
 725     swf_SetTagPos(tag, 0);
 726     int t;
 727     if(tag->id == ST_DOABC) {
 728         U32 abcflags = swf_GetU32(tag);
 729         DEBUG printf("flags=%08x\n", abcflags);
 730         char*name= swf_GetString(tag);
 731         file->name = (name&&name[0])?strdup(name):0;
 732     }
 733     U32 version = swf_GetU32(tag);
 734     if(version!=0x002e0010) {
 735         fprintf(stderr, "Warning: unknown AVM2 version %08x\n", version);
 736     }
 737
 738     pool_read(pool, tag);
 739
 740     int num_methods = swf_GetU30(tag);
 741     DEBUG printf("%d methods\n", num_methods);
 742     for(t=0;t<num_methods;t++) {
 743         NEW(abc_method_t,m);
 744         int param_count = swf_GetU30(tag);
 745         int return_type_index = swf_GetU30(tag);
 746         if(return_type_index)
 747             m->return_type = multiname_clone(pool_lookup_multiname(pool, return_type_index));
 748         else
 749             m->return_type = 0;
 750
 751         int s;
 752         for(s=0;s<param_count;s++) {
 753             int type_index = swf_GetU30(tag);
 754
 755             /* type_index might be 0, which probably means "..." (varargs) */
 756             multiname_t*param = type_index?multiname_clone(pool_lookup_multiname(pool, type_index)):0;
 757             list_append(m->parameters, param);
 758         }
 759
 760         int namenr = swf_GetU30(tag);
 761         if(namenr)
 762             m->name = strdup(pool_lookup_string(pool, namenr));
 763         else
 764             m->name = strdup("");
 765
 766         m->flags = swf_GetU8(tag);
 767
 768         DEBUG printf("method %d) %s %s flags=%02x\n", t, m->name, params_tostring(m->parameters), m->flags);
 769
 770         if(m->flags&0x08) {
 771             m->optional_parameters = list_new();
 772             int num = swf_GetU30(tag);
 773             int s;
 774             for(s=0;s<num;s++) {
 775                 int vindex = swf_GetU30(tag);
 776                 U8 vkind = swf_GetU8(tag); // specifies index type for "val"
 777                 constant_t*c = constant_fromindex(pool, vindex, vkind);
 778                 list_append(m->optional_parameters, c);
 779             }
 780         }
 781         if(m->flags&0x80) {
 782             /* debug information- not used by avm2 */
 783             multiname_list_t*l = m->parameters;
 784             while(l) {
 785                 const char*name = pool_lookup_string(pool, swf_GetU30(tag));
 786                 l = l->next;
 787             }
 788         }
 789         m->index = array_length(file->methods);
 790         array_append(file->methods, NO_KEY, m);
 791     }
 792
 793     parse_metadata(tag, file, pool);
 794
 795     /* skip classes, and scripts for now, and do the real parsing later */
 796     int num_classes = swf_GetU30(tag);
 797     int classes_pos = tag->pos;
 798     DEBUG printf("%d classes\n", num_classes);
 799     for(t=0;t<num_classes;t++) {
 800         abc_class_t*cls = malloc(sizeof(abc_class_t));
 801         memset(cls, 0, sizeof(abc_class_t));
 802
 803         swf_GetU30(tag); //classname
 804         swf_GetU30(tag); //supername
 805
 806         array_append(file->classes, NO_KEY, cls);
 807
 808         cls->flags = swf_GetU8(tag);
 809         DEBUG printf("class %d %02x\n", t, cls->flags);
 810         if(cls->flags&8)
 811             swf_GetU30(tag); //protectedNS
 812         int s;
 813         int inum = swf_GetU30(tag); //interface count
 814         cls->interfaces = 0;
 815         for(s=0;s<inum;s++) {
 816             int interface_index = swf_GetU30(tag);
 817             multiname_t* m = multiname_clone(pool_lookup_multiname(pool, interface_index));
 818             list_append(cls->interfaces, m);
 819             DEBUG printf("  class %d interface: %s\n", t, m->name);
 820         }
 821
 822         int iinit = swf_GetU30(tag); //iinit
 823         DEBUG printf("--iinit-->%d\n", iinit);
 824         traits_skip(tag);
 825     }
 826     for(t=0;t<num_classes;t++) {
 827         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 828         int cinit = swf_GetU30(tag);
 829         DEBUG printf("--cinit(%d)-->%d\n", t, cinit);
 830         cls->static_constructor = (abc_method_t*)array_getvalue(file->methods, cinit);
 831         traits_skip(tag);
 832     }
 833     int num_scripts = swf_GetU30(tag);
 834     DEBUG printf("%d scripts\n", num_scripts);
 835     for(t=0;t<num_scripts;t++) {
 836         int init = swf_GetU30(tag);
 837         traits_skip(tag);
 838     }
 839
 840     int num_method_bodies = swf_GetU30(tag);
 841     DEBUG printf("%d method bodies\n", num_method_bodies);
 842     for(t=0;t<num_method_bodies;t++) {
 843         int methodnr = swf_GetU30(tag);
 844         if(methodnr >= file->methods->num) {
 845             printf("Invalid method number: %d\n", methodnr);
 846             return 0;
 847         }
 848         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, methodnr);
 849         abc_method_body_t*c = malloc(sizeof(abc_method_body_t));
 850         memset(c, 0, sizeof(abc_method_body_t));
 851         c->old.max_stack = swf_GetU30(tag);
 852         c->old.local_count = swf_GetU30(tag);
 853         c->old.init_scope_depth = swf_GetU30(tag);
 854         c->old.max_scope_depth = swf_GetU30(tag);
 855
 856         c->init_scope_depth = c->old.init_scope_depth;
 857         int code_length = swf_GetU30(tag);
 858
 859         c->method = m;
 860         m->body = c;
 861
 862         int pos = tag->pos + code_length;
 863         codelookup_t*codelookup = 0;
 864         c->code = code_parse(tag, code_length, file, pool, &codelookup);
 865         tag->pos = pos;
 866
 867         int exception_count = swf_GetU30(tag);
 868         int s;
 869         c->exceptions = list_new();
 870         for(s=0;s<exception_count;s++) {
 871             abc_exception_t*e = malloc(sizeof(abc_exception_t));
 872
 873             e->from = code_atposition(codelookup, swf_GetU30(tag));
 874             e->to = code_atposition(codelookup, swf_GetU30(tag));
 875             e->target = code_atposition(codelookup, swf_GetU30(tag));
 876
 877             e->exc_type = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 878             e->var_name = multiname_clone(pool_lookup_multiname(pool, swf_GetU30(tag)));
 879             //e->var_name = pool_lookup_string(pool, swf_GetU30(tag));
 880             //if(e->var_name) e->var_name = strdup(e->var_name);
 881             list_append(c->exceptions, e);
 882         }
 883         codelookup_free(codelookup);
 884         c->traits = traits_parse(tag, pool, file);
 885
 886         DEBUG printf("method_body %d) (method %d), %d bytes of code\n", t, methodnr, code_length);
 887
 888         array_append(file->method_bodies, NO_KEY, c);
 889     }
 890     if(tag->len - tag->pos) {
 891         fprintf(stderr, "%d unparsed bytes remaining in ABC block\n", tag->len - tag->pos);
 892         return 0;
 893     }
 894
 895     swf_SetTagPos(tag, classes_pos);
 896     for(t=0;t<num_classes;t++) {
 897         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 898
 899         int classname_index = swf_GetU30(tag);
 900         int superclass_index = swf_GetU30(tag);
 901         cls->classname = multiname_clone(pool_lookup_multiname(pool, classname_index));
 902         cls->superclass = multiname_clone(pool_lookup_multiname(pool, superclass_index));
 903         cls->flags = swf_GetU8(tag);
 904         const char*ns = "";
 905         if(cls->flags&8) {
 906             int ns_index = swf_GetU30(tag);
 907             cls->protectedNS = namespace_clone(pool_lookup_namespace(pool, ns_index));
 908         }
 909
 910         int num_interfaces = swf_GetU30(tag); //interface count
 911         int s;
 912         for(s=0;s<num_interfaces;s++) {
 913             swf_GetU30(tag);
 914         }
 915         int iinit = swf_GetU30(tag);
 916         cls->constructor = (abc_method_t*)array_getvalue(file->methods, iinit);
 917         cls->traits = traits_parse(tag, pool, file);
 918     }
 919     for(t=0;t<num_classes;t++) {
 920         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
 921         /* SKIP */
 922         swf_GetU30(tag); // cindex
 923         cls->static_traits = traits_parse(tag, pool, file);
 924     }
 925     int num_scripts2 = swf_GetU30(tag);
 926     for(t=0;t<num_scripts2;t++) {
 927         int init = swf_GetU30(tag);
 928         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, init);
 929
 930         abc_script_t*s = malloc(sizeof(abc_script_t));
 931         memset(s, 0, sizeof(abc_script_t));
 932         s->method = m;
 933         s->traits = traits_parse(tag, pool, file);
 934         array_append(file->scripts, NO_KEY, s);
 935     }
 936
 937     pool_destroy(pool);
 938     return file;
 939 }
 940
 941 void swf_WriteABC(TAG*abctag, void*code)
 942 {
 943     abc_file_t*file = (abc_file_t*)code;
 944     pool_t*pool = pool_new();
 945
 946     TAG*tmp = swf_InsertTag(0,0);
 947     TAG*tag = tmp;
 948     int t;
 949
 950     /* add method bodies where needed */
 951     for(t=0;t<file->classes->num;t++) {
 952         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 953         if(!c->constructor) {
 954             if(!(c->flags&CLASS_INTERFACE)) {
 955                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 956                 NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 957                 // don't bother to set m->index
 958                 body->method = m; m->body = body;
 959                 __ returnvoid(body);
 960                 c->constructor = m;
 961             } else {
 962                 NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 963                 c->constructor = m;
 964             }
 965         }
 966         if(!c->static_constructor) {
 967             NEW(abc_method_t,m);array_append(file->methods, NO_KEY, m);
 968             NEW(abc_method_body_t,body);array_append(file->method_bodies, NO_KEY, body);
 969             body->method = m; m->body = body;
 970             __ returnvoid(body);
 971             c->static_constructor = m;
 972         }
 973     }
 974
 975
 976     swf_SetU30(tag, file->methods->num);
 977     /* enumerate classes, methods and method bodies */
 978     for(t=0;t<file->methods->num;t++) {
 979         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
 980         m->index = t;
 981     }
 982     for(t=0;t<file->classes->num;t++) {
 983         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
 984         c->index = t;
 985     }
 986     for(t=0;t<file->method_bodies->num;t++) {
 987         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 988         m->index = t;
 989     }
 990
 991     /* generate code statistics */
 992     for(t=0;t<file->method_bodies->num;t++) {
 993         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
 994         m->stats = code_get_statistics(m->code, m->exceptions);
 995     }
 996
 997     /* level init scope depths: The init scope depth of a method is
 998        always as least as high as the init scope depth of it's surrounding
 999        class.
1000        A method has it's own init_scope_depth if it's an init method
1001        (then its init scope depth is zero), or if it's used as a closure.
1002
1003        Not sure yet what to do with methods which are used at different
1004        locations- e.g. the nullmethod is used all over the place.
1005        EDIT: flashplayer doesn't allow this anyway- a method can only
1006              be used once
1007
1008        Also, I have the strong suspicion that flash player uses only
1009        the difference between max_scope_stack and init_scope_stack, anyway.
1010      */
1011     for(t=0;t<file->classes->num;t++) {
1012         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1013         trait_list_t*traits = c->traits;
1014         if(c->constructor && c->constructor->body &&
1015            c->constructor->body->init_scope_depth < c->init_scope_depth) {
1016            c->constructor->body->init_scope_depth = c->init_scope_depth;
1017         }
1018         if(c->static_constructor && c->static_constructor->body &&
1019            c->static_constructor->body->init_scope_depth < c->init_scope_depth) {
1020            c->static_constructor->body->init_scope_depth = c->init_scope_depth;
1021         }
1022         while(traits) {
1023             trait_t*trait = traits->trait;
1024             if(trait_is_method(trait) && trait->method->body) {
1025                 abc_method_body_t*body = trait->method->body;
1026                 if(body->init_scope_depth < c->init_scope_depth) {
1027                    body->init_scope_depth = c->init_scope_depth;
1028                 }
1029             }
1030             traits = traits->next;
1031         }
1032     }
1033
1034     for(t=0;t<file->methods->num;t++) {
1035         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1036         int n = 0;
1037         multiname_list_t*l = m->parameters;
1038         int num_params = list_length(m->parameters);
1039         swf_SetU30(tag, num_params);
1040         if(m->return_type)
1041             swf_SetU30(tag, pool_register_multiname(pool, m->return_type));
1042         else
1043             swf_SetU30(tag, 0);
1044         int s;
1045         while(l) {
1046             swf_SetU30(tag, pool_register_multiname(pool, l->multiname));
1047             l = l->next;
1048         }
1049         if(m->name) {
1050             swf_SetU30(tag, pool_register_string(pool, m->name));
1051         } else {
1052             swf_SetU30(tag, 0);
1053         }
1054
1055         U8 flags = m->flags&(METHOD_NEED_REST|METHOD_NEED_ARGUMENTS);
1056         if(m->optional_parameters)
1057             flags |= METHOD_HAS_OPTIONAL;
1058         if(m->body) {
1059             flags |= m->body->stats->flags;
1060         }
1061
1062         swf_SetU8(tag, flags);
1063         if(flags&METHOD_HAS_OPTIONAL) {
1064             swf_SetU30(tag, list_length(m->optional_parameters));
1065             constant_list_t*l = m->optional_parameters;
1066             while(l) {
1067                 swf_SetU30(tag, constant_get_index(pool, l->constant));
1068                 swf_SetU8(tag, l->constant->type);
1069                 l = l->next;
1070             }
1071         }
1072     }
1073
1074     /* write metadata */
1075     swf_SetU30(tag, file->metadata->num);
1076     for(t=0;t<file->metadata->num;t++) {
1077         const char*entry_name = array_getkey(file->metadata, t);
1078         swf_SetU30(tag, pool_register_string(pool, entry_name));
1079         array_t*items = (array_t*)array_getvalue(file->metadata, t);
1080         swf_SetU30(tag, items->num);
1081         int s;
1082         for(s=0;s<items->num;s++) {
1083             int i1 = pool_register_string(pool, array_getkey(items, s));
1084             int i2 = pool_register_string(pool, array_getvalue(items, s));
1085             swf_SetU30(tag, i1);
1086             swf_SetU30(tag, i2);
1087         }
1088     }
1089
1090     swf_SetU30(tag, file->classes->num);
1091     for(t=0;t<file->classes->num;t++) {
1092         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1093
1094         int classname_index = pool_register_multiname(pool, c->classname);
1095         int superclass_index = pool_register_multiname(pool, c->superclass);
1096
1097         swf_SetU30(tag, classname_index);
1098         swf_SetU30(tag, superclass_index);
1099
1100         swf_SetU8(tag, c->flags); // flags
1101         if(c->flags&0x08) {
1102             int ns_index = pool_register_namespace(pool, c->protectedNS);
1103             swf_SetU30(tag, ns_index);
1104         }
1105
1106         swf_SetU30(tag, list_length(c->interfaces));
1107         multiname_list_t*interface= c->interfaces;
1108         while(interface) {
1109             swf_SetU30(tag, pool_register_multiname(pool, interface->multiname));
1110             interface = interface->next;
1111         }
1112
1113         assert(c->constructor);
1114         swf_SetU30(tag, c->constructor->index);
1115
1116         traits_write(pool, tag, c->traits);
1117     }
1118     for(t=0;t<file->classes->num;t++) {
1119         abc_class_t*c = (abc_class_t*)array_getvalue(file->classes, t);
1120         assert(c->static_constructor);
1121         swf_SetU30(tag, c->static_constructor->index);
1122
1123         traits_write(pool, tag, c->static_traits);
1124     }
1125
1126     swf_SetU30(tag, file->scripts->num);
1127     for(t=0;t<file->scripts->num;t++) {
1128         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1129         swf_SetU30(tag, s->method->index); //!=t!
1130         traits_write(pool, tag, s->traits);
1131     }
1132
1133     swf_SetU30(tag, file->method_bodies->num);
1134     for(t=0;t<file->method_bodies->num;t++) {
1135         abc_method_body_t*c = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1136         abc_method_t*m = c->method;
1137         swf_SetU30(tag, m->index);
1138
1139         //swf_SetU30(tag, c->old.max_stack);
1140         //swf_SetU30(tag, c->old.local_count);
1141         //swf_SetU30(tag, c->old.init_scope_depth);
1142         //swf_SetU30(tag, c->old.max_scope_depth);
1143
1144         swf_SetU30(tag, c->stats->max_stack);
1145
1146         int param_num = list_length(c->method->parameters)+1;
1147         if(c->method->flags&METHOD_NEED_REST)
1148             param_num++;
1149         if(param_num <= c->stats->local_count)
1150             swf_SetU30(tag, c->stats->local_count);
1151         else
1152             swf_SetU30(tag, param_num);
1153
1154         swf_SetU30(tag, c->init_scope_depth);
1155         swf_SetU30(tag, c->stats->max_scope_depth+
1156                         c->init_scope_depth);
1157
1158         code_write(tag, c->code, pool, file);
1159
1160         swf_SetU30(tag, list_length(c->exceptions));
1161         abc_exception_list_t*l = c->exceptions;
1162         while(l) {
1163             // warning: assumes "pos" in each code_t is up-to-date
1164             swf_SetU30(tag, l->abc_exception->from->pos);
1165             swf_SetU30(tag, l->abc_exception->to->pos);
1166             swf_SetU30(tag, l->abc_exception->target->pos);
1167             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->exc_type));
1168             swf_SetU30(tag, pool_register_multiname(pool, l->abc_exception->var_name));
1169             l = l->next;
1170         }
1171
1172         traits_write(pool, tag, c->traits);
1173     }
1174
1175     /* free temporary codestat data again. Notice: If we were to write this
1176        file multiple times, this can also be shifted to abc_file_free() */
1177     for(t=0;t<file->method_bodies->num;t++) {
1178         abc_method_body_t*m = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1179         codestats_free(m->stats);m->stats=0;
1180     }
1181
1182     // --- start to write real tag --
1183
1184     tag = abctag;
1185
1186     if(tag->id == ST_DOABC) {
1187         swf_SetU32(tag, file->flags); // flags
1188         swf_SetString(tag, file->name);
1189     }
1190
1191     swf_SetU16(tag, 0x10); //version
1192     swf_SetU16(tag, 0x2e);
1193
1194     pool_write(pool, tag);
1195
1196     swf_SetBlock(tag, tmp->data, tmp->len);
1197
1198     swf_DeleteTag(0, tmp);
1199     pool_destroy(pool);
1200 }
1201
1202 void abc_file_free(abc_file_t*file)
1203 {
1204     int t;
1205     if(file->metadata) {
1206         for(t=0;t<file->metadata->num;t++) {
1207             array_t*items = (array_t*)array_getvalue(file->metadata, t);
1208             int s;
1209             for(s=0;s<items->num;s++) {
1210                 free(array_getvalue(items, s));
1211             }
1212             array_free(items);
1213         }
1214         array_free(file->metadata);file->metadata=0;
1215     }
1216
1217     for(t=0;t<file->methods->num;t++) {
1218         abc_method_t*m = (abc_method_t*)array_getvalue(file->methods, t);
1219
1220         multiname_list_t*param = m->parameters;
1221         while(param) {
1222             multiname_destroy(param->multiname);param->multiname=0;
1223             param = param->next;
1224         }
1225         list_free(m->parameters);m->parameters=0;
1226
1227         constant_list_t*opt = m->optional_parameters;
1228         while(opt) {
1229             constant_free(opt->constant);opt->constant=0;
1230             opt = opt->next;
1231         }
1232         list_free(m->optional_parameters);m->optional_parameters=0;
1233
1234         if(m->name) {
1235             free((void*)m->name);m->name=0;
1236         }
1237         if(m->return_type) {
1238             multiname_destroy(m->return_type);
1239         }
1240         free(m);
1241     }
1242     array_free(file->methods);file->methods=0;
1243
1244     for(t=0;t<file->classes->num;t++) {
1245         abc_class_t*cls = (abc_class_t*)array_getvalue(file->classes, t);
1246         traits_free(cls->traits);cls->traits=0;
1247         traits_free(cls->static_traits);cls->static_traits=0;
1248
1249         if(cls->classname) {
1250             multiname_destroy(cls->classname);
1251         }
1252         if(cls->superclass) {
1253             multiname_destroy(cls->superclass);
1254         }
1255
1256         multiname_list_t*i = cls->interfaces;
1257         while(i) {
1258             multiname_destroy(i->multiname);i->multiname=0;
1259             i = i->next;
1260         }
1261         list_free(cls->interfaces);cls->interfaces=0;
1262
1263         if(cls->protectedNS) {
1264             namespace_destroy(cls->protectedNS);
1265         }
1266         free(cls);
1267     }
1268     array_free(file->classes);file->classes=0;
1269
1270     for(t=0;t<file->scripts->num;t++) {
1271         abc_script_t*s = (abc_script_t*)array_getvalue(file->scripts, t);
1272         traits_free(s->traits);s->traits=0;
1273         free(s);
1274     }
1275     array_free(file->scripts);file->scripts=0;
1276
1277     for(t=0;t<file->method_bodies->num;t++) {
1278         abc_method_body_t*body = (abc_method_body_t*)array_getvalue(file->method_bodies, t);
1279         code_free(body->code);body->code=0;
1280         traits_free(body->traits);body->traits=0;
1281
1282         abc_exception_list_t*ee = body->exceptions;
1283         while(ee) {
1284             abc_exception_t*e=ee->abc_exception;ee->abc_exception=0;
1285             e->from = e->to = e->target = 0;
1286             multiname_destroy(e->exc_type);e->exc_type=0;
1287             multiname_destroy(e->var_name);e->var_name=0;
1288             free(e);
1289             ee=ee->next;
1290         }
1291         list_free(body->exceptions);body->exceptions=0;
1292
1293         free(body);
1294     }
1295     array_free(file->method_bodies);file->method_bodies=0;
1296
1297     if(file->name) {
1298         free((void*)file->name);file->name=0;
1299     }
1300
1301     free(file);
1302 }
1303
1304 void swf_FreeABC(void*code)
1305 {
1306     abc_file_t*file= (abc_file_t*)code;
1307     abc_file_free(file);
1308 }
1309
1310 void swf_AddButtonLinks(SWF*swf, char stop_each_frame, char events)
1311 {
1312     int num_frames = 0;
1313     int has_buttons = 0;
1314     TAG*tag=swf->firstTag;
1315     while(tag) {
1316         if(tag->id == ST_SHOWFRAME)
1317             num_frames++;
1318         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2)
1319             has_buttons = 1;
1320         tag = tag->next;
1321     }
1322
1323     abc_file_t*file = abc_file_new();
1324     abc_method_body_t*c = 0;
1325
1326     abc_class_t*cls = abc_class_new2(file, "rfx::MainTimeline", "flash.display::MovieClip");
1327     abc_class_protectedNS(cls, "rfx:MainTimeline");
1328
1329     TAG*abctag = swf_InsertTagBefore(swf, swf->firstTag, ST_DOABC);
1330
1331     tag = swf_InsertTag(abctag, ST_SYMBOLCLASS);
1332     swf_SetU16(tag, 1);
1333     swf_SetU16(tag, 0);
1334     swf_SetString(tag, "rfx.MainTimeline");
1335
1336     c = abc_class_getstaticconstructor(cls, 0)->body;
1337     c->old.max_stack = 1;
1338     c->old.local_count = 1;
1339     c->old.init_scope_depth = 9;
1340     c->old.max_scope_depth = 10;
1341
1342     __ getlocal_0(c);
1343     __ pushscope(c);
1344     __ returnvoid(c);
1345
1346     c = abc_class_getconstructor(cls, 0)->body;
1347     c->old.max_stack = 3;
1348     c->old.local_count = 1;
1349     c->old.init_scope_depth = 10;
1350     c->old.max_scope_depth = 11;
1351
1352     debugfile(c, "constructor.as");
1353
1354     __ getlocal_0(c);
1355     __ pushscope(c);
1356
1357     __ getlocal_0(c);
1358     __ constructsuper(c,0);
1359
1360     __ getlex(c, "[package]flash.system::Security");
1361     __ pushstring(c, "*");
1362     __ callpropvoid(c, "[package]::allowDomain", 1);
1363
1364     if(stop_each_frame || has_buttons) {
1365         int frame = 0;
1366         tag = swf->firstTag;
1367         abc_method_body_t*f = 0; //frame script
1368         while(tag && tag->id!=ST_END) {
1369             char framename[80];
1370             char needs_framescript=0;
1371             char buttonname[80];
1372             char functionname[80];
1373             sprintf(framename, "[packageinternal]rfx::frame%d", frame);
1374
1375             if(!f && (tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2 || stop_each_frame)) {
1376                 /* make the contructor add a frame script */
1377                 __ findpropstrict(c,"[package]::addFrameScript");
1378                 __ pushbyte(c,frame);
1379                 __ getlex(c,framename);
1380                 __ callpropvoid(c,"[package]::addFrameScript",2);
1381
1382                 f = abc_class_method(cls, 0, multiname_fromstring(framename))->body;
1383                 f->old.max_stack = 3;
1384                 f->old.local_count = 1;
1385                 f->old.init_scope_depth = 10;
1386                 f->old.max_scope_depth = 11;
1387                 __ debugfile(f, "framescript.as");
1388                 __ debugline(f, 1);
1389                 __ getlocal_0(f);
1390                 __ pushscope(f);
1391                 if(stop_each_frame) {
1392                     __ findpropstrict(f, "[package]::stop");
1393                     __ callpropvoid(f, "[package]::stop", 0);
1394                 }
1395             }
1396
1397             if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1398                 U16 id = swf_GetDefineID(tag);
1399                 sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1400                 __ getlex(f,buttonname);
1401                 __ getlex(f,"flash.events::MouseEvent");
1402                 __ getproperty(f, "::CLICK");
1403                 sprintf(functionname, "::clickbutton%d", swf_GetDefineID(tag));
1404                 __ getlex(f,functionname);
1405                 __ callpropvoid(f, "::addEventListener" ,2);
1406
1407                 needs_framescript = 1;
1408
1409                 abc_method_body_t*h =
1410                     abc_class_method(cls, 0, multiname_fromstring(functionname))->body;
1411                 list_append(h->method->parameters, multiname_fromstring("flash.events::MouseEvent"));
1412
1413                 h->old.max_stack = 6;
1414                 h->old.local_count = 2;
1415                 h->old.init_scope_depth = 10;
1416                 h->old.max_scope_depth = 11;
1417                 __ getlocal_0(h);
1418                 __ pushscope(h);
1419
1420                 ActionTAG*oldaction = swf_ButtonGetAction(tag);
1421                 if(oldaction && oldaction->op == ACTION__GOTOFRAME) {
1422                     int framenr = GET16(oldaction->data);
1423                     if(framenr>254) {
1424                         fprintf(stderr, "Warning: Couldn't translate jump to frame %d to flash 9 actionscript\n", framenr);
1425                     }
1426                     if(!events) {
1427                         __ findpropstrict(h,"[package]::gotoAndStop");
1428                         __ pushbyte(h,framenr+1);
1429                         __ callpropvoid(h,"[package]::gotoAndStop", 1);
1430                     } else {
1431                         char framename[80];
1432                         sprintf(framename, "frame%d", framenr);
1433                         __ getlocal_0(h); //this
1434                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1435                         __ pushstring(h, "link");
1436                         __ pushtrue(h);
1437                         __ pushtrue(h);
1438                         __ pushstring(h, framename);
1439                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1440                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1441                     }
1442                 } else if(oldaction && oldaction->op == ACTION__GETURL) {
1443                     if(!events) {
1444                         __ findpropstrict(h,"flash.net::navigateToURL");
1445                         __ findpropstrict(h,"flash.net::URLRequest");
1446                         // TODO: target _blank
1447                         __ pushstring(h,oldaction->data); //url
1448                         __ constructprop(h,"flash.net::URLRequest", 1);
1449                         __ callpropvoid(h,"flash.net::navigateToURL", 1);
1450                     } else {
1451                         __ getlocal_0(h); //this
1452                         __ findpropstrict(h, "[package]flash.events::TextEvent");
1453                         __ pushstring(h, "link");
1454                         __ pushtrue(h);
1455                         __ pushtrue(h);
1456                         __ pushstring(h,oldaction->data); //url
1457                         __ constructprop(h,"[package]flash.events::TextEvent", 4);
1458                         __ callpropvoid(h,"[package]::dispatchEvent", 1);
1459                     }
1460                 } else if(oldaction) {
1461                     fprintf(stderr, "Warning: Couldn't translate button code of button %d to flash 9 abc action\n", id);
1462                 }
1463                 __ returnvoid(h);
1464                 swf_ActionFree(oldaction);
1465             }
1466             if(tag->id == ST_SHOWFRAME) {
1467                 if(f) {
1468                     __ returnvoid(f);
1469                     f = 0;
1470                 }
1471                 frame++;
1472             }
1473             tag = tag->next;
1474         }
1475         if(f) {
1476             __ returnvoid(f);
1477         }
1478     }
1479     __ returnvoid(c);
1480
1481     tag = swf->firstTag;
1482     while(tag) {
1483         if(tag->id == ST_DEFINEBUTTON || tag->id == ST_DEFINEBUTTON2) {
1484             char buttonname[80];
1485             sprintf(buttonname, "::button%d", swf_GetDefineID(tag));
1486             multiname_t*s = multiname_fromstring(buttonname);
1487             abc_class_slot(cls, multiname_fromstring(buttonname), s);
1488         }
1489         tag = tag->next;
1490     }
1491
1492
1493     abc_script_t*s = abc_initscript(file, 0);
1494     c = s->method->body;
1495     c->old.max_stack = 2;
1496     c->old.local_count = 1;
1497     c->old.init_scope_depth = 1;
1498     c->old.max_scope_depth = 9;
1499
1500     __ getlocal_0(c);
1501     __ pushscope(c);
1502     __ getscopeobject(c, 0);
1503     __ getlex(c,"::Object");
1504     __ pushscope(c);
1505     __ getlex(c,"flash.events::EventDispatcher");
1506     __ pushscope(c);
1507     __ getlex(c,"flash.display::DisplayObject");
1508     __ pushscope(c);
1509     __ getlex(c,"flash.display::InteractiveObject");
1510     __ pushscope(c);
1511     __ getlex(c,"flash.display::DisplayObjectContainer");
1512     __ pushscope(c);
1513     __ getlex(c,"flash.display::Sprite");
1514     __ pushscope(c);
1515     __ getlex(c,"flash.display::MovieClip");
1516     __ pushscope(c);
1517     __ getlex(c,"flash.display::MovieClip");
1518     __ newclass(c,cls);
1519     __ popscope(c);
1520     __ popscope(c);
1521     __ popscope(c);
1522     __ popscope(c);
1523     __ popscope(c);
1524     __ popscope(c);
1525     __ popscope(c);
1526     __ initproperty(c,"rfx::MainTimeline");
1527     __ returnvoid(c);
1528
1529     //abc_method_body_addClassTrait(c, "rfx:MainTimeline", 1, cls);
1530     multiname_t*classname = multiname_fromstring("rfx::MainTimeline");
1531     abc_initscript_addClassTrait(s, classname, cls);
1532     multiname_destroy(classname);
1533
1534     swf_WriteABC(abctag, file);
1535 }
1536