Execute.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2014  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "Internal.hpp"
  23
  24 #include <dlfcn.h>
  25 #include <dirent.h>
  26 #include <fcntl.h>
  27 #include <unistd.h>
  28
  29 #include "cycript.hpp"
  30
  31 #include "sig/parse.hpp"
  32 #include "sig/ffi_type.hpp"
  33
  34 #include "Pooling.hpp"
  35 #include "Execute.hpp"
  36
  37 #include <sys/mman.h>
  38 #include <sys/stat.h>
  39
  40 #include <iostream>
  41 #include <set>
  42 #include <map>
  43 #include <iomanip>
  44 #include <sstream>
  45 #include <cmath>
  46
  47 #include "Code.hpp"
  48 #include "Decode.hpp"
  49 #include "Error.hpp"
  50 #include "JavaScript.hpp"
  51 #include "String.hpp"
  52
  53 std::vector<CYHook *> hooks_;
  54
  55 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  56     hooks_.push_back(hook);
  57 }
  58
  59 /* JavaScript Properties {{{ */
  60 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  61     return JSObjectHasProperty(context, object, name);
  62 }
  63
  64 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  65     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  66 }
  67
  68 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  69     return _jsccall(JSObjectGetProperty, context, object, name);
  70 }
  71
  72 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  73     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  74 }
  75
  76 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  77     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  78 }
  79
  80 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  81     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  82 }
  83
  84 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  85     JSObjectSetPrototype(context, object, value);
  86     _assert(JSObjectGetPrototype(context, object) == value);
  87 }
  88 /* }}} */
  89 /* JavaScript Strings {{{ */
  90 JSStringRef CYCopyJSString(const char *value) {
  91     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  92 }
  93
  94 JSStringRef CYCopyJSString(JSStringRef value) {
  95     return value == NULL ? NULL : JSStringRetain(value);
  96 }
  97
  98 JSStringRef CYCopyJSString(CYUTF8String value) {
  99     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
 100     return CYCopyJSString(value.data);
 101 }
 102
 103 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 104     if (JSValueIsNull(context, value))
 105         return NULL;
 106     return _jsccall(JSValueToStringCopy, context, value);
 107 }
 108
 109 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 110     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 111 }
 112
 113 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 114     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 115 }
 116
 117 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 118     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 119     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 120     return utf8.data;
 121 }
 122
 123 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 124     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 125 }
 126 /* }}} */
 127 /* Index Offsets {{{ */
 128 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 129     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 130 }
 131 /* }}} */
 132
 133 static JSClassRef All_;
 134 static JSClassRef Context_;
 135 JSClassRef Functor_;
 136 static JSClassRef Global_;
 137 static JSClassRef Pointer_;
 138 static JSClassRef Struct_;
 139
 140 JSStringRef Array_s;
 141 JSStringRef cy_s;
 142 JSStringRef cyi_s;
 143 JSStringRef length_s;
 144 JSStringRef message_s;
 145 JSStringRef name_s;
 146 JSStringRef pop_s;
 147 JSStringRef prototype_s;
 148 JSStringRef push_s;
 149 JSStringRef splice_s;
 150 JSStringRef toCYON_s;
 151 JSStringRef toJSON_s;
 152 JSStringRef toPointer_s;
 153 JSStringRef toString_s;
 154
 155 static JSStringRef Result_;
 156
 157 void CYFinalize(JSObjectRef object) {
 158     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 159     _assert(internal->count_ != _not(unsigned));
 160     if (--internal->count_ == 0)
 161         delete internal;
 162 }
 163
 164 void Structor_(CYPool &pool, sig::Type *&type) {
 165     if (
 166         type->primitive == sig::pointer_P &&
 167         type->data.data.type->primitive == sig::struct_P &&
 168         type->data.data.type->name != NULL &&
 169         strcmp(type->data.data.type->name, "_objc_class") == 0
 170     ) {
 171         type->primitive = sig::typename_P;
 172         type->data.data.type = NULL;
 173         return;
 174     }
 175
 176     if (type->primitive != sig::struct_P || type->name == NULL)
 177         return;
 178
 179     size_t length(strlen(type->name));
 180     char keyed[length + 2];
 181     memcpy(keyed + 1, type->name, length + 1);
 182
 183     static const char *modes = "34";
 184     for (size_t i(0); i != 2; ++i) {
 185         char mode(modes[i]);
 186         keyed[0] = mode;
 187
 188         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 189             switch (mode) {
 190                 case '3':
 191                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 192                 break;
 193
 194                 case '4': {
 195                     sig::Signature signature;
 196                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 197                     type = signature.elements[0].type;
 198                 } break;
 199             }
 200     }
 201 }
 202
 203 JSClassRef Type_privateData::Class_;
 204
 205 struct Context :
 206     CYData
 207 {
 208     JSGlobalContextRef context_;
 209
 210     Context(JSGlobalContextRef context) :
 211         context_(context)
 212     {
 213     }
 214 };
 215
 216 struct Pointer :
 217     CYOwned
 218 {
 219     Type_privateData *type_;
 220     size_t length_;
 221
 222     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 223         CYOwned(value, context, owner),
 224         type_(new(*pool_) Type_privateData(type)),
 225         length_(length)
 226     {
 227     }
 228 };
 229
 230 struct Struct_privateData :
 231     CYOwned
 232 {
 233     Type_privateData *type_;
 234
 235     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 236         CYOwned(NULL, context, owner)
 237     {
 238     }
 239 };
 240
 241 typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
 242 static TypeMap Types_;
 243
 244 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 245     Struct_privateData *internal(new Struct_privateData(context, owner));
 246     CYPool &pool(*internal->pool_);
 247     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 248     internal->type_ = typical;
 249
 250     if (owner != NULL)
 251         internal->value_ = data;
 252     else {
 253         size_t size(typical->GetFFI()->size);
 254         void *copy(internal->pool_->malloc<void>(size));
 255         memcpy(copy, data, size);
 256         internal->value_ = copy;
 257     }
 258
 259     return JSObjectMake(context, Struct_, internal);
 260 }
 261
 262 static void *CYCastSymbol(const char *name) {
 263     return dlsym(RTLD_DEFAULT, name);
 264 }
 265
 266 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 267     return JSValueMakeBoolean(context, value);
 268 }
 269
 270 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 271     return JSValueMakeNumber(context, value);
 272 }
 273
 274 #define CYCastJSValue_(Type_) \
 275     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 276         return JSValueMakeNumber(context, static_cast<double>(value)); \
 277     }
 278
 279 CYCastJSValue_(int)
 280 CYCastJSValue_(unsigned int)
 281 CYCastJSValue_(long int)
 282 CYCastJSValue_(long unsigned int)
 283 CYCastJSValue_(long long int)
 284 CYCastJSValue_(long long unsigned int)
 285
 286 JSValueRef CYJSUndefined(JSContextRef context) {
 287     return JSValueMakeUndefined(context);
 288 }
 289
 290 double CYCastDouble(JSContextRef context, JSValueRef value) {
 291     return _jsccall(JSValueToNumber, context, value);
 292 }
 293
 294 bool CYCastBool(JSContextRef context, JSValueRef value) {
 295     return JSValueToBoolean(context, value);
 296 }
 297
 298 JSValueRef CYJSNull(JSContextRef context) {
 299     return JSValueMakeNull(context);
 300 }
 301
 302 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 303     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 304 }
 305
 306 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 307     return CYCastJSValue(context, CYJSString(value));
 308 }
 309
 310 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 311     return _jsccall(JSValueToObject, context, value);
 312 }
 313
 314 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 315     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 316 }
 317
 318 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 319     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 320 }
 321
 322 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 323     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 324 }
 325
 326 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 327     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 328 }
 329
 330 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 331     JSValueRef arguments[1];
 332     arguments[0] = value;
 333     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 334     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 335 }
 336
 337 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 338     if (count == 0)
 339         printf("\n");
 340     else {
 341         CYPool pool;
 342         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 343     }
 344
 345     return CYJSUndefined(context);
 346 } CYCatch(NULL) }
 347
 348 static size_t Nonce_(0);
 349
 350 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 351     CYPool pool;
 352     const char *name(pool.strcat(CYPoolCString(pool, context, arguments[0]), pool.itoa(Nonce_++), NULL));
 353     return CYCastJSValue(context, name);
 354 } CYCatch(NULL) }
 355
 356 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 357
 358 void CYGarbageCollect(JSContextRef context) {
 359     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 360 }
 361
 362 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 363     CYGarbageCollect(context);
 364     return CYJSUndefined(context);
 365 } CYCatch(NULL) }
 366
 367 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 368     switch (JSType type = JSValueGetType(context, value)) {
 369         case kJSTypeUndefined:
 370             return "undefined";
 371         case kJSTypeNull:
 372             return "null";
 373         case kJSTypeBoolean:
 374             return CYCastBool(context, value) ? "true" : "false";
 375
 376         case kJSTypeNumber: {
 377             std::ostringstream str;
 378             CYNumerify(str, CYCastDouble(context, value));
 379             std::string value(str.str());
 380             return pool.strmemdup(value.c_str(), value.size());
 381         } break;
 382
 383         case kJSTypeString: {
 384             std::ostringstream str;
 385             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 386             CYStringify(str, string.data, string.size);
 387             std::string value(str.str());
 388             return pool.strmemdup(value.c_str(), value.size());
 389         } break;
 390
 391         case kJSTypeObject:
 392             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 393         default:
 394             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 395     }
 396 } CYCatch(NULL) }
 397
 398 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 399     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 400 }
 401
 402 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 403     if (objects != NULL)
 404         return CYPoolCCYON(pool, context, value, *objects);
 405     else {
 406         std::set<void *> objects;
 407         return CYPoolCCYON(pool, context, value, objects);
 408     }
 409 }
 410
 411 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 412     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 413     if (CYIsCallable(context, toCYON)) {
 414         // XXX: this needs to be abstracted behind some kind of function
 415         JSValueRef arguments[1] = {CYCastJSValue(context, static_cast<double>(reinterpret_cast<uintptr_t>(&objects)))};
 416         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 417         _assert(value != NULL);
 418         return CYPoolCString(pool, context, value);
 419     }
 420
 421     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 422     if (CYIsCallable(context, toJSON)) {
 423         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 424         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 425     }
 426
 427     if (JSObjectIsFunction(context, object)) {
 428         JSValueRef toString(CYGetProperty(context, object, toString_s));
 429         if (CYIsCallable(context, toString)) {
 430             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 431             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 432             _assert(value != NULL);
 433             return CYPoolCString(pool, context, value);
 434         }
 435     }
 436
 437     _assert(objects.insert(object).second);
 438
 439     std::ostringstream str;
 440
 441     str << '{';
 442
 443     // XXX: this is, sadly, going to leak
 444     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 445
 446     bool comma(false);
 447
 448     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 449         if (comma)
 450             str << ',';
 451         else
 452             comma = true;
 453
 454         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 455         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 456
 457         if (CYIsKey(string))
 458             str << string.data;
 459         else
 460             CYStringify(str, string.data, string.size);
 461
 462         str << ':';
 463
 464         try {
 465             JSValueRef value(CYGetProperty(context, object, name));
 466             str << CYPoolCCYON(pool, context, value, objects);
 467         } catch (const CYException &error) {
 468             str << "@error";
 469         }
 470     }
 471
 472     JSPropertyNameArrayRelease(names);
 473
 474     str << '}';
 475
 476     std::string string(str.str());
 477     return pool.strmemdup(string.c_str(), string.size());
 478 }
 479
 480 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 481     if (count == 0)
 482         return NULL;
 483     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 484 }
 485
 486 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 487     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 488     // XXX: this is horribly inefficient
 489     std::set<void *> backup;
 490     if (objects == NULL)
 491         objects = &backup;
 492
 493     CYPool pool;
 494     std::ostringstream str;
 495
 496     str << '[';
 497
 498     JSValueRef length(CYGetProperty(context, _this, length_s));
 499     bool comma(false);
 500
 501     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 502         if (comma)
 503             str << ',';
 504         else
 505             comma = true;
 506
 507         try {
 508             JSValueRef value(CYGetProperty(context, _this, index));
 509             if (!JSValueIsUndefined(context, value))
 510                 str << CYPoolCCYON(pool, context, value, *objects);
 511             else {
 512                 str << ',';
 513                 comma = false;
 514             }
 515         } catch (const CYException &error) {
 516             str << "@error";
 517         }
 518     }
 519
 520     str << ']';
 521
 522     std::string value(str.str());
 523     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 524 } CYCatch(NULL) }
 525
 526 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 527     CYPool pool;
 528     std::ostringstream str;
 529
 530     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 531     CYStringify(str, string.data, string.size);
 532
 533     std::string value(str.str());
 534     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 535 } CYCatch(NULL) }
 536
 537 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 538     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 539     return JSObjectMake(context, Pointer_, internal);
 540 }
 541
 542 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 543     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 544 }
 545
 546 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 547     cy::Functor *internal;
 548     if (*cache != NULL)
 549         internal = reinterpret_cast<cy::Functor *>(*cache);
 550     else {
 551         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 552         if (function == NULL)
 553             return NULL;
 554
 555         internal = new cy::Functor(encoding, function);
 556         *cache = internal;
 557     }
 558
 559     ++internal->count_;
 560     return JSObjectMake(context, Functor_, internal);
 561 }
 562
 563 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 564     return CYGetOffset(CYPoolCString(pool, context, value), index);
 565 }
 566
 567 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 568     switch (JSValueGetType(context, value)) {
 569         case kJSTypeNull:
 570             return NULL;
 571         case kJSTypeObject: {
 572             JSObjectRef object((JSObjectRef) value);
 573             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 574                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 575                 return internal->value_;
 576             }
 577             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 578             if (CYIsCallable(context, toPointer)) {
 579                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 580                 _assert(value != NULL);
 581                 return CYCastPointer_(context, value);
 582             }
 583         } default:
 584             double number(CYCastDouble(context, value));
 585             if (std::isnan(number))
 586                 throw CYJSError(context, "cannot convert value to pointer");
 587             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 588     }
 589 }
 590
 591 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 592     switch (type->primitive) {
 593         case sig::boolean_P:
 594             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 595         break;
 596
 597 #define CYPoolFFI_(primitive, native) \
 598         case sig::primitive ## _P: \
 599             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 600         break;
 601
 602         CYPoolFFI_(uchar, unsigned char)
 603         CYPoolFFI_(char, char)
 604         CYPoolFFI_(ushort, unsigned short)
 605         CYPoolFFI_(short, short)
 606         CYPoolFFI_(ulong, unsigned long)
 607         CYPoolFFI_(long, long)
 608         CYPoolFFI_(uint, unsigned int)
 609         CYPoolFFI_(int, int)
 610         CYPoolFFI_(ulonglong, unsigned long long)
 611         CYPoolFFI_(longlong, long long)
 612         CYPoolFFI_(float, float)
 613         CYPoolFFI_(double, double)
 614
 615         case sig::array_P: {
 616             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 617             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 618             for (size_t index(0); index != type->data.data.size; ++index) {
 619                 ffi_type *field(ffi->elements[index]);
 620
 621                 JSValueRef rhs;
 622                 if (aggregate == NULL)
 623                     rhs = value;
 624                 else {
 625                     rhs = CYGetProperty(context, aggregate, index);
 626                     if (JSValueIsUndefined(context, rhs))
 627                         throw CYJSError(context, "unable to extract array value");
 628                 }
 629
 630                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 631                 // XXX: alignment?
 632                 base += field->size;
 633             }
 634         } break;
 635
 636         case sig::pointer_P:
 637             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 638         break;
 639
 640         case sig::string_P:
 641             _assert(pool != NULL);
 642             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 643         break;
 644
 645         case sig::struct_P: {
 646             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 647             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 648             for (size_t index(0); index != type->data.signature.count; ++index) {
 649                 sig::Element *element(&type->data.signature.elements[index]);
 650                 ffi_type *field(ffi->elements[index]);
 651
 652                 JSValueRef rhs;
 653                 if (aggregate == NULL)
 654                     rhs = value;
 655                 else {
 656                     rhs = CYGetProperty(context, aggregate, index);
 657                     if (JSValueIsUndefined(context, rhs)) {
 658                         if (element->name != NULL)
 659                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 660                         else
 661                             goto undefined;
 662                         if (JSValueIsUndefined(context, rhs)) undefined:
 663                             throw CYJSError(context, "unable to extract structure value");
 664                     }
 665                 }
 666
 667                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 668                 // XXX: alignment?
 669                 base += field->size;
 670             }
 671         } break;
 672
 673         case sig::void_P:
 674         break;
 675
 676         default:
 677             for (CYHook *hook : hooks_)
 678                 if (hook->PoolFFI != NULL)
 679                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 680                         return;
 681
 682             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 683     }
 684 }
 685
 686 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 687     switch (type->primitive) {
 688         case sig::boolean_P:
 689             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 690
 691 #define CYFromFFI_(primitive, native) \
 692         case sig::primitive ## _P: \
 693             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 694
 695         CYFromFFI_(uchar, unsigned char)
 696         CYFromFFI_(char, char)
 697         CYFromFFI_(ushort, unsigned short)
 698         CYFromFFI_(short, short)
 699         CYFromFFI_(ulong, unsigned long)
 700         CYFromFFI_(long, long)
 701         CYFromFFI_(uint, unsigned int)
 702         CYFromFFI_(int, int)
 703         CYFromFFI_(ulonglong, unsigned long long)
 704         CYFromFFI_(longlong, long long)
 705         CYFromFFI_(float, float)
 706         CYFromFFI_(double, double)
 707
 708         case sig::array_P:
 709             if (void *pointer = data)
 710                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 711             else goto null;
 712
 713         case sig::pointer_P:
 714             if (void *pointer = *reinterpret_cast<void **>(data))
 715                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 716             else goto null;
 717
 718         case sig::string_P:
 719             if (char *utf8 = *reinterpret_cast<char **>(data))
 720                 return CYCastJSValue(context, utf8);
 721             else goto null;
 722
 723         case sig::struct_P:
 724             return CYMakeStruct(context, data, type, ffi, owner);
 725         case sig::void_P:
 726             return CYJSUndefined(context);
 727
 728         null:
 729             return CYJSNull(context);
 730         default:
 731             for (CYHook *hook : hooks_)
 732                 if (hook->FromFFI != NULL)
 733                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 734                         return value;
 735
 736             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 737     }
 738 }
 739
 740 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 741     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 742
 743     JSContextRef context(internal->context_);
 744
 745     size_t count(internal->cif_.nargs);
 746     JSValueRef values[count];
 747
 748     for (size_t index(0); index != count; ++index)
 749         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 750
 751     JSValueRef value(adapter(context, count, values, internal->function_));
 752     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 753 }
 754
 755 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 756     return CYCallAsFunction(context, function, NULL, count, values);
 757 }
 758
 759 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 760     CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
 761 }
 762
 763 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
 764     // XXX: in case of exceptions this will leak
 765     // XXX: in point of fact, this may /need/ to leak :(
 766     Closure_privateData *internal(new Closure_privateData(context, function, signature));
 767
 768 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 769     void *executable;
 770     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 771
 772     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
 773     _assert(status == FFI_OK);
 774
 775     internal->value_ = executable;
 776 #else
 777     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 778         NULL, sizeof(ffi_closure),
 779         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 780         -1, 0
 781     )));
 782
 783     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 784     _assert(status == FFI_OK);
 785
 786     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 787
 788     internal->value_ = closure;
 789 #endif
 790
 791     return internal;
 792 }
 793
 794 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 795     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
 796     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 797     // XXX: see above notes about needing to leak
 798     JSValueProtect(CYGetJSContext(context), object);
 799     return object;
 800 }
 801
 802 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 803     return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
 804 }
 805
 806 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 807     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 808
 809     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 810     if (function) {
 811         JSObjectRef function(CYCastJSObject(context, value));
 812         return CYMakeFunctor(context, function, signature);
 813     } else {
 814         void (*function)()(CYCastPointer<void (*)()>(context, value));
 815         return CYMakeFunctor(context, function, signature);
 816     }
 817 }
 818
 819 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 820     Type_privateData *typical(internal->type_);
 821     sig::Type *type(typical->type_);
 822     if (type == NULL)
 823         return false;
 824
 825     const char *name(CYPoolCString(pool, context, property));
 826     size_t length(strlen(name));
 827     double number(CYCastDouble(name, length));
 828
 829     size_t count(type->data.signature.count);
 830
 831     if (std::isnan(number)) {
 832         if (property == NULL)
 833             return false;
 834
 835         sig::Element *elements(type->data.signature.elements);
 836
 837         for (size_t local(0); local != count; ++local) {
 838             sig::Element *element(&elements[local]);
 839             if (element->name != NULL && strcmp(name, element->name) == 0) {
 840                 index = local;
 841                 goto base;
 842             }
 843         }
 844
 845         return false;
 846     } else {
 847         index = static_cast<ssize_t>(number);
 848         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 849             return false;
 850     }
 851
 852   base:
 853     ffi_type **elements(typical->GetFFI()->elements);
 854
 855     base = reinterpret_cast<uint8_t *>(internal->value_);
 856     for (ssize_t local(0); local != index; ++local)
 857         base += elements[local]->size;
 858
 859     return true;
 860 }
 861
 862 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 863     CYPool pool;
 864     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 865
 866     if (JSStringIsEqual(property, length_s))
 867         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 868
 869     Type_privateData *typical(internal->type_);
 870     if (typical->type_ == NULL)
 871         return NULL;
 872     sig::Type &type(*typical->type_);
 873
 874     ssize_t offset;
 875     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 876         offset = 0;
 877     else if (!CYGetOffset(pool, context, property, offset))
 878         return NULL;
 879
 880     if (type.primitive == sig::function_P)
 881         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 882
 883     ffi_type *ffi(typical->GetFFI());
 884
 885     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 886     base += ffi->size * offset;
 887
 888     JSObjectRef owner(internal->GetOwner() ?: object);
 889     return CYFromFFI(context, &type, ffi, base, false, owner);
 890 } CYCatch(NULL) }
 891
 892 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 893     CYPool pool;
 894     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 895     Type_privateData *typical(internal->type_);
 896
 897     if (typical->type_ == NULL)
 898         return false;
 899
 900     ssize_t offset;
 901     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 902         offset = 0;
 903     else if (!CYGetOffset(pool, context, property, offset))
 904         return false;
 905
 906     ffi_type *ffi(typical->GetFFI());
 907
 908     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 909     base += ffi->size * offset;
 910
 911     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 912     return true;
 913 } CYCatch(false) }
 914
 915 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 916     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 917     Type_privateData *typical(internal->type_);
 918     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 919 } CYCatch(NULL) }
 920
 921 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 922     CYPool pool;
 923     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 924     Type_privateData *typical(internal->type_);
 925
 926     ssize_t index;
 927     uint8_t *base;
 928
 929     if (!Index_(pool, context, internal, property, index, base))
 930         return NULL;
 931
 932     JSObjectRef owner(internal->GetOwner() ?: object);
 933
 934     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 935 } CYCatch(NULL) }
 936
 937 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 938     CYPool pool;
 939     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 940     Type_privateData *typical(internal->type_);
 941
 942     ssize_t index;
 943     uint8_t *base;
 944
 945     if (!Index_(pool, context, internal, property, index, base))
 946         return false;
 947
 948     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 949     return true;
 950 } CYCatch(false) }
 951
 952 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 953     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 954     Type_privateData *typical(internal->type_);
 955     sig::Type *type(typical->type_);
 956
 957     if (type == NULL)
 958         return;
 959
 960     size_t count(type->data.signature.count);
 961     sig::Element *elements(type->data.signature.elements);
 962
 963     char number[32];
 964
 965     for (size_t index(0); index != count; ++index) {
 966         const char *name;
 967         name = elements[index].name;
 968
 969         if (name == NULL) {
 970             sprintf(number, "%zu", index);
 971             name = number;
 972         }
 973
 974         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 975     }
 976 }
 977
 978 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
 979     if (setups + count != signature->count - 1)
 980         throw CYJSError(context, "incorrect number of arguments to ffi function");
 981
 982     size_t size(setups + count);
 983     void *values[size];
 984     memcpy(values, setup, sizeof(void *) * setups);
 985
 986     for (size_t index(setups); index != size; ++index) {
 987         sig::Element *element(&signature->elements[index + 1]);
 988         ffi_type *ffi(cif->arg_types[index]);
 989         // XXX: alignment?
 990         values[index] = new(pool) uint8_t[ffi->size];
 991         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
 992     }
 993
 994     uint8_t value[cif->rtype->size];
 995
 996     for (CYHook *hook : hooks_)
 997         if (hook->CallFunction != NULL) {
 998             // XXX: this only supports one hook, but it is a bad idea anyway
 999             (*hook->CallFunction)(context, cif, function, value, values);
1000             goto from;
1001         }
1002     ffi_call(cif, function, value, values);
1003
1004   from:
1005     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1006 }
1007
1008 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1009     CYPool pool;
1010     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1011     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1012 } CYCatch(NULL) }
1013
1014 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
1015     Type_privateData *internal(new Type_privateData(encoding));
1016     return JSObjectMake(context, Type_privateData::Class_, internal);
1017 }
1018
1019 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1020     Type_privateData *internal(new Type_privateData(type));
1021     return JSObjectMake(context, Type_privateData::Class_, internal);
1022 }
1023
1024 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1025     CYPool pool;
1026
1027     sig::Type type;
1028     type.name = NULL;
1029     type.flags = 0;
1030
1031     type.primitive = sig::function_P;
1032     sig::Copy(pool, type.data.signature, *signature);
1033
1034     return CYMakeType(context, &type);
1035 }
1036
1037 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1038     JSObjectRef global(CYGetGlobalObject(context));
1039     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1040     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1041
1042     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1043         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1044             if (CYHasProperty(context, space, property))
1045                 return true;
1046
1047     CYPool pool;
1048     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1049
1050     size_t length(name.size);
1051     char keyed[length + 2];
1052     memcpy(keyed + 1, name.data, length + 1);
1053
1054     static const char *modes = "0124";
1055     for (size_t i(0); i != 4; ++i) {
1056         keyed[0] = modes[i];
1057         if (CYBridgeHash(keyed, length + 1) != NULL)
1058             return true;
1059     }
1060
1061     return false;
1062 }
1063
1064 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1065     JSObjectRef global(CYGetGlobalObject(context));
1066     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1067     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1068
1069     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1070         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1071             if (JSValueRef value = CYGetProperty(context, space, property))
1072                 if (!JSValueIsUndefined(context, value))
1073                     return value;
1074
1075     CYPool pool;
1076     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1077
1078     size_t length(name.size);
1079     char keyed[length + 2];
1080     memcpy(keyed + 1, name.data, length + 1);
1081
1082     static const char *modes = "0124";
1083     for (size_t i(0); i != 4; ++i) {
1084         char mode(modes[i]);
1085         keyed[0] = mode;
1086
1087         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1088             switch (mode) {
1089                 case '0':
1090                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1091
1092                 case '1':
1093                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1094
1095                 case '2':
1096                     if (void *symbol = CYCastSymbol(name.data)) {
1097                         // XXX: this is horrendously inefficient
1098                         sig::Signature signature;
1099                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1100                         ffi_cif cif;
1101                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1102                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1103                     } else return NULL;
1104
1105                 // XXX: implement case 3
1106                 case '4':
1107                     return CYMakeType(context, entry->value_);
1108             }
1109     }
1110
1111     return NULL;
1112 } CYCatch(NULL) }
1113
1114 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1115     JSObjectRef global(CYGetGlobalObject(context));
1116     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1117     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1118
1119     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1120         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1121             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1122             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1123                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1124             JSPropertyNameArrayRelease(subset);
1125         }
1126 }
1127
1128 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1129     if (count != 2)
1130         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1131
1132     CYPool pool;
1133
1134     void *value(CYCastPointer<void *>(context, arguments[0]));
1135     const char *type(CYPoolCString(pool, context, arguments[1]));
1136
1137     sig::Signature signature;
1138     sig::Parse(pool, &signature, type, &Structor_);
1139
1140     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1141 } CYCatch(NULL) }
1142
1143 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1144     if (count != 1)
1145         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1146     CYPool pool;
1147     const char *type(CYPoolCString(pool, context, arguments[0]));
1148     return CYMakeType(context, type);
1149 } CYCatch(NULL) }
1150
1151 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1152     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1153
1154     CYPool pool;
1155
1156     sig::Type type;
1157     type.name = NULL;
1158     type.flags = 0;
1159
1160     type.primitive = primitive;
1161     type.data.signature.elements = new(pool) sig::Element[1 + count];
1162     type.data.signature.count = 1 + count;
1163
1164     type.data.signature.elements[0].name = NULL;
1165     type.data.signature.elements[0].type = internal->type_;
1166     type.data.signature.elements[0].offset = _not(size_t);
1167
1168     for (size_t i(0); i != count; ++i) {
1169         sig::Element &element(type.data.signature.elements[i + 1]);
1170         element.name = NULL;
1171         element.offset = _not(size_t);
1172
1173         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1174         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1175         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1176
1177         element.type = internal->type_;
1178     }
1179
1180     return CYMakeType(context, &type);
1181 } CYCatch(NULL) }
1182
1183 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1184     if (count != 1)
1185         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1186     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1187
1188     CYPool pool;
1189     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1190     if (index == _not(size_t))
1191         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1192
1193     sig::Type type;
1194     type.name = NULL;
1195     type.flags = 0;
1196
1197     type.primitive = sig::array_P;
1198     type.data.data.type = internal->type_;
1199     type.data.data.size = index;
1200
1201     return CYMakeType(context, &type);
1202 } CYCatch(NULL) }
1203
1204 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1205     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1206 }
1207
1208 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1209     if (count != 0)
1210         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1211     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1212
1213     sig::Type type(*internal->type_);
1214     type.flags |= JOC_TYPE_CONST;
1215     return CYMakeType(context, &type);
1216 } CYCatch(NULL) }
1217
1218 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1219     if (count != 0)
1220         throw CYJSError(context, "incorrect number of arguments to Type.long");
1221     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1222
1223     sig::Type type(*internal->type_);
1224
1225     switch (type.primitive) {
1226         case sig::short_P: type.primitive = sig::int_P; break;
1227         case sig::int_P: type.primitive = sig::long_P; break;
1228         case sig::long_P: type.primitive = sig::longlong_P; break;
1229         default: throw CYJSError(context, "invalid type argument to Type.long");
1230     }
1231
1232     return CYMakeType(context, &type);
1233 } CYCatch(NULL) }
1234
1235 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1236     if (count != 0)
1237         throw CYJSError(context, "incorrect number of arguments to Type.short");
1238     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1239
1240     sig::Type type(*internal->type_);
1241
1242     switch (type.primitive) {
1243         case sig::int_P: type.primitive = sig::short_P; break;
1244         case sig::long_P: type.primitive = sig::int_P; break;
1245         case sig::longlong_P: type.primitive = sig::long_P; break;
1246         default: throw CYJSError(context, "invalid type argument to Type.short");
1247     }
1248
1249     return CYMakeType(context, &type);
1250 } CYCatch(NULL) }
1251
1252 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1253     if (count != 0)
1254         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1255     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1256
1257     sig::Type type(*internal->type_);
1258
1259     switch (type.primitive) {
1260         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1261         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1262         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1263         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1264         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1265         default: throw CYJSError(context, "invalid type argument to Type.signed");
1266     }
1267
1268     return CYMakeType(context, &type);
1269 } CYCatch(NULL) }
1270
1271 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1272     if (count != 0)
1273         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1274     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1275
1276     sig::Type type(*internal->type_);
1277
1278     switch (type.primitive) {
1279         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1280         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1281         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1282         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1283         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1284         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1285     }
1286
1287     return CYMakeType(context, &type);
1288 } CYCatch(NULL) }
1289
1290 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1291     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1292 }
1293
1294 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1295     if (count != 0)
1296         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1297     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1298
1299     sig::Type type;
1300     type.name = NULL;
1301
1302     if (internal->type_->primitive == sig::char_P) {
1303         type.flags = internal->type_->flags;
1304         type.primitive = sig::string_P;
1305         type.data.data.type = NULL;
1306         type.data.data.size = 0;
1307     } else {
1308         type.flags = 0;
1309         type.primitive = sig::pointer_P;
1310         type.data.data.type = internal->type_;
1311         type.data.data.size = 0;
1312     }
1313
1314     return CYMakeType(context, &type);
1315 } CYCatch(NULL) }
1316
1317 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1318     if (count != 1)
1319         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1320     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1321
1322     CYPool pool;
1323     const char *name(CYPoolCString(pool, context, arguments[0]));
1324
1325     sig::Type type(*internal->type_);
1326     type.name = name;
1327     return CYMakeType(context, &type);
1328 } CYCatch(NULL) }
1329
1330 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1331     if (count != 1)
1332         throw CYJSError(context, "incorrect number of arguments to type cast function");
1333     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1334
1335     if (internal->type_->primitive == sig::function_P)
1336         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1337
1338     sig::Type *type(internal->type_);
1339     ffi_type *ffi(internal->GetFFI());
1340     // XXX: alignment?
1341     uint8_t value[ffi->size];
1342     CYPool pool;
1343     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1344     return CYFromFFI(context, type, ffi, value);
1345 } CYCatch(NULL) }
1346
1347 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1348     if (count != 0)
1349         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1350     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1351
1352     sig::Type *type(internal->type_);
1353     size_t length;
1354
1355     if (type->primitive != sig::array_P)
1356         length = _not(size_t);
1357     else {
1358         length = type->data.data.size;
1359         type = type->data.data.type;
1360     }
1361
1362     void *value(calloc(1, internal->GetFFI()->size));
1363     return CYMakePointer(context, value, length, type, NULL, NULL);
1364 } CYCatch(NULL) }
1365
1366 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1367     if (count != 2)
1368         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1369     CYPool pool;
1370     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1371     sig::Signature signature;
1372     sig::Parse(pool, &signature, encoding, &Structor_);
1373     return CYMakeFunctor(context, arguments[0], signature);
1374 } CYCatch(NULL) }
1375
1376 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1377     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1378     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1379 } CYCatch(NULL) }
1380
1381 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1382     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1383 }
1384
1385 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1386     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1387     char string[32];
1388     sprintf(string, "%p", internal->value_);
1389     return CYCastJSValue(context, string);
1390 } CYCatch(NULL) }
1391
1392 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1393     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1394
1395     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1396     if (internal->length_ != _not(size_t)) {
1397         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1398         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1399         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1400     } else if (internal->type_->type_ == NULL) pointer: {
1401         char string[32];
1402         sprintf(string, "%p", internal->value_);
1403         return CYCastJSValue(context, string);
1404     } try {
1405         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1406         if (JSValueIsUndefined(context, value))
1407             goto pointer;
1408         CYPool pool;
1409         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1410     } catch (const CYException &e) {
1411         goto pointer;
1412     }
1413 } CYCatch(NULL) }
1414
1415 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1416     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1417     return CYMakeType(context, internal->type_->type_);
1418 } CYCatch(NULL) }
1419
1420 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1421     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1422     return CYMakeType(context, &internal->signature_);
1423 } CYCatch(NULL) }
1424
1425 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1426     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1427     return CYCastJSValue(context, internal->GetFFI()->alignment);
1428 } CYCatch(NULL) }
1429
1430 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1431     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1432     return CYCastJSValue(context, internal->type_->name);
1433 } CYCatch(NULL) }
1434
1435 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1436     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1437     return CYCastJSValue(context, internal->GetFFI()->size);
1438 } CYCatch(NULL) }
1439
1440 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1441     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1442     CYPool pool;
1443     const char *type(sig::Unparse(pool, internal->type_));
1444     return CYCastJSValue(context, CYJSString(type));
1445 } CYCatch(NULL) }
1446
1447 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1448     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1449     CYLocalPool pool;
1450     std::ostringstream out;
1451     CYOptions options;
1452     CYOutput output(out, options);
1453     (new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1454     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1455 } CYCatch(NULL) }
1456
1457 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1458     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1459 }
1460
1461 static JSStaticFunction Pointer_staticFunctions[4] = {
1462     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1463     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1464     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1465     {NULL, NULL, 0}
1466 };
1467
1468 static JSStaticValue Pointer_staticValues[2] = {
1469     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1470     {NULL, NULL, NULL, 0}
1471 };
1472
1473 static JSStaticFunction Struct_staticFunctions[2] = {
1474     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1475     {NULL, NULL, 0}
1476 };
1477
1478 static JSStaticFunction Functor_staticFunctions[4] = {
1479     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1480     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1481     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1482     {NULL, NULL, 0}
1483 };
1484
1485 namespace cy {
1486     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1487 }
1488
1489 static JSStaticValue Functor_staticValues[2] = {
1490     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1491     {NULL, NULL, NULL, 0}
1492 };
1493
1494 namespace cy {
1495     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1496 }
1497
1498 static JSStaticValue Type_staticValues[4] = {
1499     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1500     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1501     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1502     {NULL, NULL, NULL, 0}
1503 };
1504
1505 static JSStaticFunction Type_staticFunctions[14] = {
1506     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1507     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1508     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1509     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1510     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1511     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1512     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1513     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1514     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1515     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1516     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1517     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1518     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1519     {NULL, NULL, 0}
1520 };
1521
1522 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1523
1524 void CYSetArgs(int argc, const char *argv[]) {
1525     JSContextRef context(CYGetJSContext());
1526     JSValueRef args[argc];
1527     for (int i(0); i != argc; ++i)
1528         args[i] = CYCastJSValue(context, argv[i]);
1529
1530     JSObjectRef array;
1531     if (JSObjectMakeArray$ != NULL)
1532         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1533     else {
1534         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1535         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1536         array = CYCastJSObject(context, value);
1537     }
1538
1539     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1540     CYSetProperty(context, System, CYJSString("args"), array);
1541 }
1542
1543 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1544     return JSContextGetGlobalObject(context);
1545 }
1546
1547 // XXX: this is neither exceptin safe nor even terribly sane
1548 class ExecutionHandle {
1549   private:
1550     JSContextRef context_;
1551     std::vector<void *> handles_;
1552
1553   public:
1554     ExecutionHandle(JSContextRef context) :
1555         context_(context)
1556     {
1557         handles_.resize(hooks_.size());
1558         for (size_t i(0); i != hooks_.size(); ++i) {
1559             CYHook *hook(hooks_[i]);
1560             if (hook->ExecuteStart != NULL)
1561                 handles_[i] = (*hook->ExecuteStart)(context_);
1562             else
1563                 handles_[i] = NULL;
1564         }
1565     }
1566
1567     ~ExecutionHandle() {
1568         for (size_t i(hooks_.size()); i != 0; --i) {
1569             CYHook *hook(hooks_[i-1]);
1570             if (hook->ExecuteEnd != NULL)
1571                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1572         }
1573     }
1574 };
1575
1576 const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1577     JSValueRef exception(NULL);
1578
1579     ExecutionHandle handle(context);
1580
1581     JSValueRef result; try {
1582         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1583     } catch (const char *error) {
1584         return error;
1585     }
1586
1587     if (exception != NULL) error:
1588         return CYPoolCString(pool, context, CYJSString(context, exception));
1589
1590     if (JSValueIsUndefined(context, result))
1591         return NULL;
1592
1593     const char *json; try {
1594         std::set<void *> objects;
1595         json = CYPoolCCYON(pool, context, result, objects, &exception);
1596     } catch (const char *error) {
1597         return error;
1598     }
1599
1600     if (exception != NULL)
1601         goto error;
1602
1603     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1604
1605     return json;
1606 }
1607
1608 static bool initialized_ = false;
1609
1610 void CYInitializeDynamic() {
1611     if (!initialized_)
1612         initialized_ = true;
1613     else return;
1614
1615     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1616     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1617
1618     JSClassDefinition definition;
1619
1620     definition = kJSClassDefinitionEmpty;
1621     definition.className = "All";
1622     definition.hasProperty = &All_hasProperty;
1623     definition.getProperty = &All_getProperty;
1624     definition.getPropertyNames = &All_getPropertyNames;
1625     All_ = JSClassCreate(&definition);
1626
1627     definition = kJSClassDefinitionEmpty;
1628     definition.className = "Context";
1629     definition.finalize = &CYFinalize;
1630     Context_ = JSClassCreate(&definition);
1631
1632     definition = kJSClassDefinitionEmpty;
1633     definition.className = "Functor";
1634     definition.staticFunctions = cy::Functor::StaticFunctions;
1635     definition.staticValues = Functor_staticValues;
1636     definition.callAsFunction = &Functor_callAsFunction;
1637     definition.finalize = &CYFinalize;
1638     Functor_ = JSClassCreate(&definition);
1639
1640     definition = kJSClassDefinitionEmpty;
1641     definition.className = "Pointer";
1642     definition.staticFunctions = Pointer_staticFunctions;
1643     definition.staticValues = Pointer_staticValues;
1644     definition.getProperty = &Pointer_getProperty;
1645     definition.setProperty = &Pointer_setProperty;
1646     definition.finalize = &CYFinalize;
1647     Pointer_ = JSClassCreate(&definition);
1648
1649     definition = kJSClassDefinitionEmpty;
1650     definition.className = "Struct";
1651     definition.staticFunctions = Struct_staticFunctions;
1652     definition.getProperty = &Struct_getProperty;
1653     definition.setProperty = &Struct_setProperty;
1654     definition.getPropertyNames = &Struct_getPropertyNames;
1655     definition.finalize = &CYFinalize;
1656     Struct_ = JSClassCreate(&definition);
1657
1658     definition = kJSClassDefinitionEmpty;
1659     definition.className = "Type";
1660     definition.staticValues = Type_staticValues;
1661     definition.staticFunctions = Type_staticFunctions;
1662     definition.callAsFunction = &Type_callAsFunction;
1663     definition.callAsConstructor = &Type_callAsConstructor;
1664     definition.finalize = &CYFinalize;
1665     Type_privateData::Class_ = JSClassCreate(&definition);
1666
1667     definition = kJSClassDefinitionEmpty;
1668     definition.className = "Global";
1669     //definition.getProperty = &Global_getProperty;
1670     Global_ = JSClassCreate(&definition);
1671
1672     Array_s = JSStringCreateWithUTF8CString("Array");
1673     cy_s = JSStringCreateWithUTF8CString("$cy");
1674     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1675     length_s = JSStringCreateWithUTF8CString("length");
1676     message_s = JSStringCreateWithUTF8CString("message");
1677     name_s = JSStringCreateWithUTF8CString("name");
1678     pop_s = JSStringCreateWithUTF8CString("pop");
1679     prototype_s = JSStringCreateWithUTF8CString("prototype");
1680     push_s = JSStringCreateWithUTF8CString("push");
1681     splice_s = JSStringCreateWithUTF8CString("splice");
1682     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1683     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1684     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1685     toString_s = JSStringCreateWithUTF8CString("toString");
1686
1687     Result_ = JSStringCreateWithUTF8CString("_");
1688
1689     for (CYHook *hook : hooks_)
1690         if (hook->Initialize != NULL)
1691             (*hook->Initialize)();
1692 }
1693
1694 void CYThrow(JSContextRef context, JSValueRef value) {
1695     if (value != NULL)
1696         throw CYJSError(context, value);
1697 }
1698
1699 const char *CYJSError::PoolCString(CYPool &pool) const {
1700     std::set<void *> objects;
1701     // XXX: this used to be CYPoolCString
1702     return CYPoolCCYON(pool, context_, value_, objects);
1703 }
1704
1705 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1706     // XXX: what if the context is different?
1707     return value_;
1708 }
1709
1710 JSValueRef CYCastJSError(JSContextRef context, const char *message) {
1711     JSObjectRef Error(CYGetCachedObject(context, CYJSString("Error")));
1712     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1713     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1714 }
1715
1716 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1717     return CYCastJSError(context, message_);
1718 }
1719
1720 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1721     _assert(context != NULL);
1722
1723     CYPool pool;
1724
1725     va_list args;
1726     va_start(args, format);
1727     // XXX: there might be a beter way to think about this
1728     const char *message(pool.vsprintf(64, format, args));
1729     va_end(args);
1730
1731     value_ = CYCastJSError(context, message);
1732 }
1733
1734 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1735     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1736 }
1737
1738 extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
1739
1740 void *CYMapFile(const char *path, size_t *psize) {
1741     int fd(_syscall_(open(path, O_RDONLY), 1, {ENOENT}));
1742     if (fd == -1)
1743         return NULL;
1744
1745     struct stat stat;
1746     _syscall(fstat(fd, &stat));
1747     size_t size(stat.st_size);
1748
1749     *psize = size;
1750
1751     void *base;
1752     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1753
1754     _syscall(close(fd));
1755     return base;
1756 }
1757
1758 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1759     _assert(count == 1);
1760     CYPool pool;
1761
1762     Dl_info addr;
1763     _assert(dladdr(reinterpret_cast<void *>(&require), &addr) != 0);
1764     char *lib(pool.strdup(addr.dli_fname));
1765
1766     char *slash(strrchr(lib, '/'));
1767     _assert(slash != NULL);
1768     *slash = '\0';
1769
1770     CYJSString property("exports");
1771     JSObjectRef module;
1772
1773     const char *name(CYPoolCString(pool, context, arguments[0]));
1774     const char *path(pool.strcat(lib, "/cycript0.9/", name, ".cy", NULL));
1775
1776     CYJSString key(path);
1777     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1778     JSValueRef cache(CYGetProperty(context, modules, key));
1779
1780     if (!JSValueIsUndefined(context, cache))
1781         module = CYCastJSObject(context, cache);
1782     else {
1783         CYUTF8String code;
1784         code.data = reinterpret_cast<char *>(CYMapFile(path, &code.size));
1785
1786         if (code.data == NULL) {
1787             if (strchr(name, '/') == NULL && (
1788 #ifdef __APPLE__
1789                 dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1790                 dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1791 #endif
1792             false))
1793                 return CYJSUndefined(NULL);
1794
1795             CYThrow("Can't find module: %s", name);
1796         }
1797
1798         module = JSObjectMake(context, NULL, NULL);
1799         CYSetProperty(context, modules, key, module);
1800
1801         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1802         CYSetProperty(context, module, property, exports);
1803
1804         std::stringstream wrap;
1805         wrap << "(function (exports, require, module) { " << code << "\n});";
1806         code = CYPoolCode(pool, wrap);
1807
1808         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1809         JSObjectRef function(CYCastJSObject(context, value));
1810
1811         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1812         CYCallAsFunction(context, function, NULL, 3, arguments);
1813     }
1814
1815     return CYGetProperty(context, module, property);
1816 } CYCatch(NULL) }
1817
1818 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1819     CYInitializeDynamic();
1820
1821     JSObjectRef global(CYGetGlobalObject(context));
1822
1823     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1824     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1825
1826 /* Cache Globals {{{ */
1827     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1828     CYSetProperty(context, cy, CYJSString("Array"), Array);
1829
1830     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1831     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1832
1833     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
1834     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
1835
1836     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
1837     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
1838
1839     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1840     CYSetProperty(context, cy, CYJSString("Error"), Error);
1841
1842     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1843     CYSetProperty(context, cy, CYJSString("Function"), Function);
1844
1845     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1846     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1847
1848     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
1849     CYSetProperty(context, cy, CYJSString("Number"), Number);
1850
1851     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
1852     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
1853
1854     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1855     CYSetProperty(context, cy, CYJSString("Object"), Object);
1856
1857     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1858     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1859
1860     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1861     CYSetProperty(context, cy, CYJSString("String"), String);
1862
1863     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1864     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1865 /* }}} */
1866
1867     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1868     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1869
1870     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1871     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1872     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1873
1874     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1875     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1876     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1877
1878     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1879     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1880
1881     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1882     CYSetProperty(context, cy, CYJSString("modules"), modules);
1883
1884     JSObjectRef all(JSObjectMake(context, All_, NULL));
1885     CYSetProperty(context, cycript, CYJSString("all"), all);
1886
1887     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1888     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1889
1890     if (true) {
1891         JSObjectRef last(NULL), curr(global);
1892
1893         goto next; for (JSValueRef next;;) {
1894             if (JSValueIsNull(context, next))
1895                 break;
1896             last = curr;
1897             curr = CYCastJSObject(context, next);
1898           next:
1899             next = JSObjectGetPrototype(context, curr);
1900         }
1901
1902         CYSetPrototype(context, last, all);
1903     }
1904
1905     CYSetProperty(context, global, CYJSString("$cyq"), &$cyq, kJSPropertyAttributeDontEnum);
1906
1907     JSObjectRef System(JSObjectMake(context, NULL, NULL));
1908     CYSetProperty(context, cy, CYJSString("System"), System);
1909
1910     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
1911
1912     CYSetProperty(context, global, CYJSString("system"), System);
1913     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
1914     //CYSetProperty(context, System, CYJSString("global"), global);
1915     CYSetProperty(context, System, CYJSString("print"), &System_print);
1916
1917     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
1918         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
1919
1920     for (CYHook *hook : hooks_)
1921         if (hook->SetupContext != NULL)
1922             (*hook->SetupContext)(context);
1923
1924     CYArrayPush(context, alls, cycript);
1925 }
1926
1927 static JSGlobalContextRef context_;
1928
1929 JSGlobalContextRef CYGetJSContext() {
1930     CYInitializeDynamic();
1931
1932     if (context_ == NULL) {
1933         context_ = JSGlobalContextCreate(Global_);
1934         CYSetupContext(context_);
1935     }
1936
1937     return context_;
1938 }
1939
1940 void CYDestroyContext() {
1941     if (context_ == NULL)
1942         return;
1943     JSGlobalContextRelease(context_);
1944     context_ = NULL;
1945 }