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 static std::vector<CYHook *> &GetHooks() {
  54     static std::vector<CYHook *> hooks;
  55     return hooks;
  56 }
  57
  58 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  59     GetHooks().push_back(hook);
  60 }
  61
  62 /* JavaScript Properties {{{ */
  63 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  64     return JSObjectHasProperty(context, object, name);
  65 }
  66
  67 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  68     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  69 }
  70
  71 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  72     return _jsccall(JSObjectGetProperty, context, object, name);
  73 }
  74
  75 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  76     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  77 }
  78
  79 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  80     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  81 }
  82
  83 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  84     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  85 }
  86
  87 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  88     JSObjectSetPrototype(context, object, value);
  89     _assert(CYIsEqual(context, JSObjectGetPrototype(context, object), value));
  90 }
  91 /* }}} */
  92 /* JavaScript Strings {{{ */
  93 JSStringRef CYCopyJSString(const char *value) {
  94     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  95 }
  96
  97 JSStringRef CYCopyJSString(JSStringRef value) {
  98     return value == NULL ? NULL : JSStringRetain(value);
  99 }
 100
 101 JSStringRef CYCopyJSString(CYUTF8String value) {
 102     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
 103     return CYCopyJSString(value.data);
 104 }
 105
 106 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 107     if (JSValueIsNull(context, value))
 108         return NULL;
 109     return _jsccall(JSValueToStringCopy, context, value);
 110 }
 111
 112 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 113     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 114 }
 115
 116 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 117     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 118 }
 119
 120 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 121     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 122     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 123     return utf8.data;
 124 }
 125
 126 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 127     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 128 }
 129 /* }}} */
 130 /* Index Offsets {{{ */
 131 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 132     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 133 }
 134 /* }}} */
 135
 136 static JSClassRef All_;
 137 static JSClassRef Context_;
 138 JSClassRef Functor_;
 139 static JSClassRef Global_;
 140 static JSClassRef Pointer_;
 141 static JSClassRef Struct_;
 142
 143 JSStringRef Array_s;
 144 JSStringRef cy_s;
 145 JSStringRef cyi_s;
 146 JSStringRef length_s;
 147 JSStringRef message_s;
 148 JSStringRef name_s;
 149 JSStringRef pop_s;
 150 JSStringRef prototype_s;
 151 JSStringRef push_s;
 152 JSStringRef splice_s;
 153 JSStringRef toCYON_s;
 154 JSStringRef toJSON_s;
 155 JSStringRef toPointer_s;
 156 JSStringRef toString_s;
 157
 158 static JSStringRef Result_;
 159
 160 void CYFinalize(JSObjectRef object) {
 161     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 162     _assert(internal->count_ != _not(unsigned));
 163     if (--internal->count_ == 0)
 164         delete internal;
 165 }
 166
 167 void Structor_(CYPool &pool, sig::Type *&type) {
 168     if (
 169         type->primitive == sig::pointer_P &&
 170         type->data.data.type->primitive == sig::struct_P &&
 171         type->data.data.type->name != NULL &&
 172         strcmp(type->data.data.type->name, "_objc_class") == 0
 173     ) {
 174         type->primitive = sig::typename_P;
 175         type->data.data.type = NULL;
 176         return;
 177     }
 178
 179     if (type->primitive != sig::struct_P || type->name == NULL)
 180         return;
 181
 182     size_t length(strlen(type->name));
 183     char keyed[length + 2];
 184     memcpy(keyed + 1, type->name, length + 1);
 185
 186     static const char *modes = "34";
 187     for (size_t i(0); i != 2; ++i) {
 188         char mode(modes[i]);
 189         keyed[0] = mode;
 190
 191         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 192             switch (mode) {
 193                 case '3':
 194                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 195                 break;
 196
 197                 case '4': {
 198                     sig::Signature signature;
 199                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 200                     type = signature.elements[0].type;
 201                 } break;
 202             }
 203     }
 204 }
 205
 206 JSClassRef Type_privateData::Class_;
 207
 208 struct Context :
 209     CYData
 210 {
 211     JSGlobalContextRef context_;
 212
 213     Context(JSGlobalContextRef context) :
 214         context_(context)
 215     {
 216     }
 217 };
 218
 219 struct Pointer :
 220     CYOwned
 221 {
 222     Type_privateData *type_;
 223     size_t length_;
 224
 225     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 226         CYOwned(value, context, owner),
 227         type_(new(*pool_) Type_privateData(type)),
 228         length_(length)
 229     {
 230     }
 231 };
 232
 233 struct Struct_privateData :
 234     CYOwned
 235 {
 236     Type_privateData *type_;
 237
 238     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 239         CYOwned(NULL, context, owner)
 240     {
 241     }
 242 };
 243
 244 typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
 245 static TypeMap Types_;
 246
 247 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 248     Struct_privateData *internal(new Struct_privateData(context, owner));
 249     CYPool &pool(*internal->pool_);
 250     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 251     internal->type_ = typical;
 252
 253     if (owner != NULL)
 254         internal->value_ = data;
 255     else {
 256         size_t size(typical->GetFFI()->size);
 257         void *copy(internal->pool_->malloc<void>(size));
 258         memcpy(copy, data, size);
 259         internal->value_ = copy;
 260     }
 261
 262     return JSObjectMake(context, Struct_, internal);
 263 }
 264
 265 static void *CYCastSymbol(const char *name) {
 266     return dlsym(RTLD_DEFAULT, name);
 267 }
 268
 269 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 270     return JSValueMakeBoolean(context, value);
 271 }
 272
 273 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 274     return JSValueMakeNumber(context, value);
 275 }
 276
 277 #define CYCastJSValue_(Type_) \
 278     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 279         return JSValueMakeNumber(context, static_cast<double>(value)); \
 280     }
 281
 282 CYCastJSValue_(int)
 283 CYCastJSValue_(unsigned int)
 284 CYCastJSValue_(long int)
 285 CYCastJSValue_(long unsigned int)
 286 CYCastJSValue_(long long int)
 287 CYCastJSValue_(long long unsigned int)
 288
 289 JSValueRef CYJSUndefined(JSContextRef context) {
 290     return JSValueMakeUndefined(context);
 291 }
 292
 293 double CYCastDouble(JSContextRef context, JSValueRef value) {
 294     return _jsccall(JSValueToNumber, context, value);
 295 }
 296
 297 bool CYCastBool(JSContextRef context, JSValueRef value) {
 298     return JSValueToBoolean(context, value);
 299 }
 300
 301 JSValueRef CYJSNull(JSContextRef context) {
 302     return JSValueMakeNull(context);
 303 }
 304
 305 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 306     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 307 }
 308
 309 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 310     return CYCastJSValue(context, CYJSString(value));
 311 }
 312
 313 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 314     return _jsccall(JSValueToObject, context, value);
 315 }
 316
 317 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 318     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 319 }
 320
 321 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 322     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 323 }
 324
 325 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 326     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 327 }
 328
 329 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 330     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 331 }
 332
 333 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 334     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 335 }
 336
 337 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 338     JSValueRef arguments[1];
 339     arguments[0] = value;
 340     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 341     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 342 }
 343
 344 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 345     if (count == 0)
 346         printf("\n");
 347     else {
 348         CYPool pool;
 349         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 350     }
 351
 352     return CYJSUndefined(context);
 353 } CYCatch(NULL) }
 354
 355 static size_t Nonce_(0);
 356
 357 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 358     CYPool pool;
 359     const char *name(pool.strcat(CYPoolCString(pool, context, arguments[0]), pool.itoa(Nonce_++), NULL));
 360     return CYCastJSValue(context, name);
 361 } CYCatch(NULL) }
 362
 363 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 364
 365 void CYGarbageCollect(JSContextRef context) {
 366     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 367 }
 368
 369 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 370     CYGarbageCollect(context);
 371     return CYJSUndefined(context);
 372 } CYCatch(NULL) }
 373
 374 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 375     switch (JSType type = JSValueGetType(context, value)) {
 376         case kJSTypeUndefined:
 377             return "undefined";
 378         case kJSTypeNull:
 379             return "null";
 380         case kJSTypeBoolean:
 381             return CYCastBool(context, value) ? "true" : "false";
 382
 383         case kJSTypeNumber: {
 384             std::ostringstream str;
 385             CYNumerify(str, CYCastDouble(context, value));
 386             std::string value(str.str());
 387             return pool.strmemdup(value.c_str(), value.size());
 388         } break;
 389
 390         case kJSTypeString: {
 391             std::ostringstream str;
 392             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 393             CYStringify(str, string.data, string.size);
 394             std::string value(str.str());
 395             return pool.strmemdup(value.c_str(), value.size());
 396         } break;
 397
 398         case kJSTypeObject:
 399             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 400         default:
 401             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 402     }
 403 } CYCatch(NULL) }
 404
 405 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 406     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 407 }
 408
 409 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 410     if (objects != NULL)
 411         return CYPoolCCYON(pool, context, value, *objects);
 412     else {
 413         std::set<void *> objects;
 414         return CYPoolCCYON(pool, context, value, objects);
 415     }
 416 }
 417
 418 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 419     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 420     if (CYIsCallable(context, toCYON)) {
 421         // XXX: this needs to be abstracted behind some kind of function
 422         JSValueRef arguments[1] = {CYCastJSValue(context, static_cast<double>(reinterpret_cast<uintptr_t>(&objects)))};
 423         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 424         _assert(value != NULL);
 425         return CYPoolCString(pool, context, value);
 426     }
 427
 428     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 429     if (CYIsCallable(context, toJSON)) {
 430         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 431         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 432     }
 433
 434     if (JSObjectIsFunction(context, object)) {
 435         JSValueRef toString(CYGetProperty(context, object, toString_s));
 436         if (CYIsCallable(context, toString)) {
 437             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 438             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 439             _assert(value != NULL);
 440             return CYPoolCString(pool, context, value);
 441         }
 442     }
 443
 444     _assert(objects.insert(object).second);
 445
 446     std::ostringstream str;
 447
 448     str << '{';
 449
 450     // XXX: this is, sadly, going to leak
 451     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 452
 453     bool comma(false);
 454
 455     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 456         if (comma)
 457             str << ',';
 458         else
 459             comma = true;
 460
 461         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 462         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 463
 464         if (CYIsKey(string))
 465             str << string.data;
 466         else
 467             CYStringify(str, string.data, string.size);
 468
 469         str << ':';
 470
 471         try {
 472             JSValueRef value(CYGetProperty(context, object, name));
 473             str << CYPoolCCYON(pool, context, value, objects);
 474         } catch (const CYException &error) {
 475             str << "@error";
 476         }
 477     }
 478
 479     JSPropertyNameArrayRelease(names);
 480
 481     str << '}';
 482
 483     std::string string(str.str());
 484     return pool.strmemdup(string.c_str(), string.size());
 485 }
 486
 487 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 488     if (count == 0)
 489         return NULL;
 490     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 491 }
 492
 493 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 494     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 495     // XXX: this is horribly inefficient
 496     std::set<void *> backup;
 497     if (objects == NULL)
 498         objects = &backup;
 499
 500     CYPool pool;
 501     std::ostringstream str;
 502
 503     str << '[';
 504
 505     JSValueRef length(CYGetProperty(context, _this, length_s));
 506     bool comma(false);
 507
 508     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 509         if (comma)
 510             str << ',';
 511         else
 512             comma = true;
 513
 514         try {
 515             JSValueRef value(CYGetProperty(context, _this, index));
 516             if (!JSValueIsUndefined(context, value))
 517                 str << CYPoolCCYON(pool, context, value, *objects);
 518             else {
 519                 str << ',';
 520                 comma = false;
 521             }
 522         } catch (const CYException &error) {
 523             str << "@error";
 524         }
 525     }
 526
 527     str << ']';
 528
 529     std::string value(str.str());
 530     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 531 } CYCatch(NULL) }
 532
 533 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 534     CYPool pool;
 535     std::ostringstream str;
 536
 537     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 538     CYStringify(str, string.data, string.size);
 539
 540     std::string value(str.str());
 541     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 542 } CYCatch(NULL) }
 543
 544 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 545     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 546     return JSObjectMake(context, Pointer_, internal);
 547 }
 548
 549 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 550     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 551 }
 552
 553 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 554     cy::Functor *internal;
 555     if (*cache != NULL)
 556         internal = reinterpret_cast<cy::Functor *>(*cache);
 557     else {
 558         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 559         if (function == NULL)
 560             return NULL;
 561
 562         internal = new cy::Functor(encoding, function);
 563         *cache = internal;
 564     }
 565
 566     ++internal->count_;
 567     return JSObjectMake(context, Functor_, internal);
 568 }
 569
 570 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 571     return CYGetOffset(CYPoolCString(pool, context, value), index);
 572 }
 573
 574 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 575     switch (JSValueGetType(context, value)) {
 576         case kJSTypeNull:
 577             return NULL;
 578         case kJSTypeObject: {
 579             JSObjectRef object((JSObjectRef) value);
 580             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 581                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 582                 return internal->value_;
 583             }
 584             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 585             if (CYIsCallable(context, toPointer)) {
 586                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 587                 _assert(value != NULL);
 588                 return CYCastPointer_(context, value);
 589             }
 590         } default:
 591             double number(CYCastDouble(context, value));
 592             if (std::isnan(number))
 593                 throw CYJSError(context, "cannot convert value to pointer");
 594             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 595     }
 596 }
 597
 598 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 599     switch (type->primitive) {
 600         case sig::boolean_P:
 601             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 602         break;
 603
 604 #define CYPoolFFI_(primitive, native) \
 605         case sig::primitive ## _P: \
 606             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 607         break;
 608
 609         CYPoolFFI_(uchar, unsigned char)
 610         CYPoolFFI_(char, char)
 611         CYPoolFFI_(ushort, unsigned short)
 612         CYPoolFFI_(short, short)
 613         CYPoolFFI_(ulong, unsigned long)
 614         CYPoolFFI_(long, long)
 615         CYPoolFFI_(uint, unsigned int)
 616         CYPoolFFI_(int, int)
 617         CYPoolFFI_(ulonglong, unsigned long long)
 618         CYPoolFFI_(longlong, long long)
 619         CYPoolFFI_(float, float)
 620         CYPoolFFI_(double, double)
 621
 622         case sig::array_P: {
 623             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 624             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 625             for (size_t index(0); index != type->data.data.size; ++index) {
 626                 ffi_type *field(ffi->elements[index]);
 627
 628                 JSValueRef rhs;
 629                 if (aggregate == NULL)
 630                     rhs = value;
 631                 else {
 632                     rhs = CYGetProperty(context, aggregate, index);
 633                     if (JSValueIsUndefined(context, rhs))
 634                         throw CYJSError(context, "unable to extract array value");
 635                 }
 636
 637                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 638                 // XXX: alignment?
 639                 base += field->size;
 640             }
 641         } break;
 642
 643         case sig::pointer_P:
 644             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 645         break;
 646
 647         case sig::string_P:
 648             _assert(pool != NULL);
 649             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 650         break;
 651
 652         case sig::struct_P: {
 653             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 654             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 655             for (size_t index(0); index != type->data.signature.count; ++index) {
 656                 sig::Element *element(&type->data.signature.elements[index]);
 657                 ffi_type *field(ffi->elements[index]);
 658
 659                 JSValueRef rhs;
 660                 if (aggregate == NULL)
 661                     rhs = value;
 662                 else {
 663                     rhs = CYGetProperty(context, aggregate, index);
 664                     if (JSValueIsUndefined(context, rhs)) {
 665                         if (element->name != NULL)
 666                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 667                         else
 668                             goto undefined;
 669                         if (JSValueIsUndefined(context, rhs)) undefined:
 670                             throw CYJSError(context, "unable to extract structure value");
 671                     }
 672                 }
 673
 674                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 675                 // XXX: alignment?
 676                 base += field->size;
 677             }
 678         } break;
 679
 680         case sig::void_P:
 681         break;
 682
 683         default:
 684             for (CYHook *hook : GetHooks())
 685                 if (hook->PoolFFI != NULL)
 686                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 687                         return;
 688
 689             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 690     }
 691 }
 692
 693 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 694     switch (type->primitive) {
 695         case sig::boolean_P:
 696             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 697
 698 #define CYFromFFI_(primitive, native) \
 699         case sig::primitive ## _P: \
 700             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 701
 702         CYFromFFI_(uchar, unsigned char)
 703         CYFromFFI_(char, char)
 704         CYFromFFI_(ushort, unsigned short)
 705         CYFromFFI_(short, short)
 706         CYFromFFI_(ulong, unsigned long)
 707         CYFromFFI_(long, long)
 708         CYFromFFI_(uint, unsigned int)
 709         CYFromFFI_(int, int)
 710         CYFromFFI_(ulonglong, unsigned long long)
 711         CYFromFFI_(longlong, long long)
 712         CYFromFFI_(float, float)
 713         CYFromFFI_(double, double)
 714
 715         case sig::array_P:
 716             if (void *pointer = data)
 717                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 718             else goto null;
 719
 720         case sig::pointer_P:
 721             if (void *pointer = *reinterpret_cast<void **>(data))
 722                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 723             else goto null;
 724
 725         case sig::string_P:
 726             if (char *utf8 = *reinterpret_cast<char **>(data))
 727                 return CYCastJSValue(context, utf8);
 728             else goto null;
 729
 730         case sig::struct_P:
 731             return CYMakeStruct(context, data, type, ffi, owner);
 732         case sig::void_P:
 733             return CYJSUndefined(context);
 734
 735         null:
 736             return CYJSNull(context);
 737         default:
 738             for (CYHook *hook : GetHooks())
 739                 if (hook->FromFFI != NULL)
 740                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 741                         return value;
 742
 743             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 744     }
 745 }
 746
 747 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 748     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 749
 750     JSContextRef context(internal->context_);
 751
 752     size_t count(internal->cif_.nargs);
 753     JSValueRef values[count];
 754
 755     for (size_t index(0); index != count; ++index)
 756         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 757
 758     JSValueRef value(adapter(context, count, values, internal->function_));
 759     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 760 }
 761
 762 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 763     return CYCallAsFunction(context, function, NULL, count, values);
 764 }
 765
 766 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 767     CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
 768 }
 769
 770 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
 771     // XXX: in case of exceptions this will leak
 772     // XXX: in point of fact, this may /need/ to leak :(
 773     Closure_privateData *internal(new Closure_privateData(context, function, signature));
 774
 775 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 776     void *executable;
 777     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 778
 779     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
 780     _assert(status == FFI_OK);
 781
 782     internal->value_ = executable;
 783 #else
 784     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 785         NULL, sizeof(ffi_closure),
 786         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 787         -1, 0
 788     )));
 789
 790     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 791     _assert(status == FFI_OK);
 792
 793     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 794
 795     internal->value_ = closure;
 796 #endif
 797
 798     return internal;
 799 }
 800
 801 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 802     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
 803     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 804     // XXX: see above notes about needing to leak
 805     JSValueProtect(CYGetJSContext(context), object);
 806     return object;
 807 }
 808
 809 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 810     return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
 811 }
 812
 813 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 814     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 815
 816     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 817     if (function) {
 818         JSObjectRef function(CYCastJSObject(context, value));
 819         return CYMakeFunctor(context, function, signature);
 820     } else {
 821         void (*function)()(CYCastPointer<void (*)()>(context, value));
 822         return CYMakeFunctor(context, function, signature);
 823     }
 824 }
 825
 826 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 827     Type_privateData *typical(internal->type_);
 828     sig::Type *type(typical->type_);
 829     if (type == NULL)
 830         return false;
 831
 832     const char *name(CYPoolCString(pool, context, property));
 833     size_t length(strlen(name));
 834     double number(CYCastDouble(name, length));
 835
 836     size_t count(type->data.signature.count);
 837
 838     if (std::isnan(number)) {
 839         if (property == NULL)
 840             return false;
 841
 842         sig::Element *elements(type->data.signature.elements);
 843
 844         for (size_t local(0); local != count; ++local) {
 845             sig::Element *element(&elements[local]);
 846             if (element->name != NULL && strcmp(name, element->name) == 0) {
 847                 index = local;
 848                 goto base;
 849             }
 850         }
 851
 852         return false;
 853     } else {
 854         index = static_cast<ssize_t>(number);
 855         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 856             return false;
 857     }
 858
 859   base:
 860     ffi_type **elements(typical->GetFFI()->elements);
 861
 862     base = reinterpret_cast<uint8_t *>(internal->value_);
 863     for (ssize_t local(0); local != index; ++local)
 864         base += elements[local]->size;
 865
 866     return true;
 867 }
 868
 869 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 870     CYPool pool;
 871     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 872
 873     if (JSStringIsEqual(property, length_s))
 874         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 875
 876     Type_privateData *typical(internal->type_);
 877     if (typical->type_ == NULL)
 878         return NULL;
 879     sig::Type &type(*typical->type_);
 880
 881     ssize_t offset;
 882     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 883         offset = 0;
 884     else if (!CYGetOffset(pool, context, property, offset))
 885         return NULL;
 886
 887     if (type.primitive == sig::function_P)
 888         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 889
 890     ffi_type *ffi(typical->GetFFI());
 891
 892     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 893     base += ffi->size * offset;
 894
 895     JSObjectRef owner(internal->GetOwner() ?: object);
 896     return CYFromFFI(context, &type, ffi, base, false, owner);
 897 } CYCatch(NULL) }
 898
 899 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 900     CYPool pool;
 901     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 902     Type_privateData *typical(internal->type_);
 903
 904     if (typical->type_ == NULL)
 905         return false;
 906
 907     ssize_t offset;
 908     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 909         offset = 0;
 910     else if (!CYGetOffset(pool, context, property, offset))
 911         return false;
 912
 913     ffi_type *ffi(typical->GetFFI());
 914
 915     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 916     base += ffi->size * offset;
 917
 918     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 919     return true;
 920 } CYCatch(false) }
 921
 922 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 923     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 924     Type_privateData *typical(internal->type_);
 925     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 926 } CYCatch(NULL) }
 927
 928 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 929     CYPool pool;
 930     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 931     Type_privateData *typical(internal->type_);
 932
 933     ssize_t index;
 934     uint8_t *base;
 935
 936     if (!Index_(pool, context, internal, property, index, base))
 937         return NULL;
 938
 939     JSObjectRef owner(internal->GetOwner() ?: object);
 940
 941     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 942 } CYCatch(NULL) }
 943
 944 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 945     CYPool pool;
 946     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 947     Type_privateData *typical(internal->type_);
 948
 949     ssize_t index;
 950     uint8_t *base;
 951
 952     if (!Index_(pool, context, internal, property, index, base))
 953         return false;
 954
 955     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 956     return true;
 957 } CYCatch(false) }
 958
 959 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 960     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 961     Type_privateData *typical(internal->type_);
 962     sig::Type *type(typical->type_);
 963
 964     if (type == NULL)
 965         return;
 966
 967     size_t count(type->data.signature.count);
 968     sig::Element *elements(type->data.signature.elements);
 969
 970     char number[32];
 971
 972     for (size_t index(0); index != count; ++index) {
 973         const char *name;
 974         name = elements[index].name;
 975
 976         if (name == NULL) {
 977             sprintf(number, "%zu", index);
 978             name = number;
 979         }
 980
 981         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 982     }
 983 }
 984
 985 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)()) {
 986     if (setups + count != signature->count - 1)
 987         throw CYJSError(context, "incorrect number of arguments to ffi function");
 988
 989     size_t size(setups + count);
 990     void *values[size];
 991     memcpy(values, setup, sizeof(void *) * setups);
 992
 993     for (size_t index(setups); index != size; ++index) {
 994         sig::Element *element(&signature->elements[index + 1]);
 995         ffi_type *ffi(cif->arg_types[index]);
 996         // XXX: alignment?
 997         values[index] = new(pool) uint8_t[ffi->size];
 998         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
 999     }
1000
1001     uint8_t value[cif->rtype->size];
1002
1003     for (CYHook *hook : GetHooks())
1004         if (hook->CallFunction != NULL) {
1005             // XXX: this only supports one hook, but it is a bad idea anyway
1006             (*hook->CallFunction)(context, cif, function, value, values);
1007             goto from;
1008         }
1009     ffi_call(cif, function, value, values);
1010
1011   from:
1012     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1013 }
1014
1015 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1016     CYPool pool;
1017     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1018     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1019 } CYCatch(NULL) }
1020
1021 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
1022     Type_privateData *internal(new Type_privateData(encoding));
1023     return JSObjectMake(context, Type_privateData::Class_, internal);
1024 }
1025
1026 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1027     Type_privateData *internal(new Type_privateData(type));
1028     return JSObjectMake(context, Type_privateData::Class_, internal);
1029 }
1030
1031 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1032     CYPool pool;
1033
1034     sig::Type type;
1035     type.name = NULL;
1036     type.flags = 0;
1037
1038     type.primitive = sig::function_P;
1039     sig::Copy(pool, type.data.signature, *signature);
1040
1041     return CYMakeType(context, &type);
1042 }
1043
1044 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1045     JSObjectRef global(CYGetGlobalObject(context));
1046     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1047     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1048
1049     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1050         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1051             if (CYHasProperty(context, space, property))
1052                 return true;
1053
1054     CYPool pool;
1055     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1056
1057     size_t length(name.size);
1058     char keyed[length + 2];
1059     memcpy(keyed + 1, name.data, length + 1);
1060
1061     static const char *modes = "0124";
1062     for (size_t i(0); i != 4; ++i) {
1063         keyed[0] = modes[i];
1064         if (CYBridgeHash(keyed, length + 1) != NULL)
1065             return true;
1066     }
1067
1068     return false;
1069 }
1070
1071 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1072     JSObjectRef global(CYGetGlobalObject(context));
1073     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1074     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1075
1076     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1077         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1078             if (JSValueRef value = CYGetProperty(context, space, property))
1079                 if (!JSValueIsUndefined(context, value))
1080                     return value;
1081
1082     CYPool pool;
1083     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1084
1085     size_t length(name.size);
1086     char keyed[length + 2];
1087     memcpy(keyed + 1, name.data, length + 1);
1088
1089     static const char *modes = "0124";
1090     for (size_t i(0); i != 4; ++i) {
1091         char mode(modes[i]);
1092         keyed[0] = mode;
1093
1094         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1095             switch (mode) {
1096                 case '0':
1097                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1098
1099                 case '1':
1100                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1101
1102                 case '2':
1103                     if (void *symbol = CYCastSymbol(name.data)) {
1104                         // XXX: this is horrendously inefficient
1105                         sig::Signature signature;
1106                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1107                         ffi_cif cif;
1108                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1109                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1110                     } else return NULL;
1111
1112                 // XXX: implement case 3
1113                 case '4':
1114                     return CYMakeType(context, entry->value_);
1115             }
1116     }
1117
1118     return NULL;
1119 } CYCatch(NULL) }
1120
1121 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1122     JSObjectRef global(CYGetGlobalObject(context));
1123     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1124     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1125
1126     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1127         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1128             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1129             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1130                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1131             JSPropertyNameArrayRelease(subset);
1132         }
1133 }
1134
1135 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1136     if (count != 2)
1137         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1138
1139     CYPool pool;
1140
1141     void *value(CYCastPointer<void *>(context, arguments[0]));
1142     const char *type(CYPoolCString(pool, context, arguments[1]));
1143
1144     sig::Signature signature;
1145     sig::Parse(pool, &signature, type, &Structor_);
1146
1147     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1148 } CYCatch(NULL) }
1149
1150 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1151     if (count != 1)
1152         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1153     CYPool pool;
1154     const char *type(CYPoolCString(pool, context, arguments[0]));
1155     return CYMakeType(context, type);
1156 } CYCatch(NULL) }
1157
1158 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1159     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1160
1161     CYPool pool;
1162
1163     sig::Type type;
1164     type.name = NULL;
1165     type.flags = 0;
1166
1167     type.primitive = primitive;
1168     type.data.signature.elements = new(pool) sig::Element[1 + count];
1169     type.data.signature.count = 1 + count;
1170
1171     type.data.signature.elements[0].name = NULL;
1172     type.data.signature.elements[0].type = internal->type_;
1173     type.data.signature.elements[0].offset = _not(size_t);
1174
1175     for (size_t i(0); i != count; ++i) {
1176         sig::Element &element(type.data.signature.elements[i + 1]);
1177         element.name = NULL;
1178         element.offset = _not(size_t);
1179
1180         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1181         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1182         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1183
1184         element.type = internal->type_;
1185     }
1186
1187     return CYMakeType(context, &type);
1188 } CYCatch(NULL) }
1189
1190 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1191     if (count != 1)
1192         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1193     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1194
1195     CYPool pool;
1196     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1197     if (index == _not(size_t))
1198         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1199
1200     sig::Type type;
1201     type.name = NULL;
1202     type.flags = 0;
1203
1204     type.primitive = sig::array_P;
1205     type.data.data.type = internal->type_;
1206     type.data.data.size = index;
1207
1208     return CYMakeType(context, &type);
1209 } CYCatch(NULL) }
1210
1211 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1212     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1213 }
1214
1215 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1216     if (count != 0)
1217         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1218     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1219
1220     sig::Type type(*internal->type_);
1221     type.flags |= JOC_TYPE_CONST;
1222     return CYMakeType(context, &type);
1223 } CYCatch(NULL) }
1224
1225 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1226     if (count != 0)
1227         throw CYJSError(context, "incorrect number of arguments to Type.long");
1228     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1229
1230     sig::Type type(*internal->type_);
1231
1232     switch (type.primitive) {
1233         case sig::short_P: type.primitive = sig::int_P; break;
1234         case sig::int_P: type.primitive = sig::long_P; break;
1235         case sig::long_P: type.primitive = sig::longlong_P; break;
1236         default: throw CYJSError(context, "invalid type argument to Type.long");
1237     }
1238
1239     return CYMakeType(context, &type);
1240 } CYCatch(NULL) }
1241
1242 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1243     if (count != 0)
1244         throw CYJSError(context, "incorrect number of arguments to Type.short");
1245     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1246
1247     sig::Type type(*internal->type_);
1248
1249     switch (type.primitive) {
1250         case sig::int_P: type.primitive = sig::short_P; break;
1251         case sig::long_P: type.primitive = sig::int_P; break;
1252         case sig::longlong_P: type.primitive = sig::long_P; break;
1253         default: throw CYJSError(context, "invalid type argument to Type.short");
1254     }
1255
1256     return CYMakeType(context, &type);
1257 } CYCatch(NULL) }
1258
1259 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1260     if (count != 0)
1261         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1262     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1263
1264     sig::Type type(*internal->type_);
1265
1266     switch (type.primitive) {
1267         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1268         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1269         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1270         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1271         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1272         default: throw CYJSError(context, "invalid type argument to Type.signed");
1273     }
1274
1275     return CYMakeType(context, &type);
1276 } CYCatch(NULL) }
1277
1278 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1279     if (count != 0)
1280         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1281     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1282
1283     sig::Type type(*internal->type_);
1284
1285     switch (type.primitive) {
1286         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1287         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1288         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1289         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1290         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1291         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1292     }
1293
1294     return CYMakeType(context, &type);
1295 } CYCatch(NULL) }
1296
1297 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1298     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1299 }
1300
1301 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1302     if (count != 0)
1303         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1304     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1305
1306     sig::Type type;
1307     type.name = NULL;
1308
1309     if (internal->type_->primitive == sig::char_P) {
1310         type.flags = internal->type_->flags;
1311         type.primitive = sig::string_P;
1312         type.data.data.type = NULL;
1313         type.data.data.size = 0;
1314     } else {
1315         type.flags = 0;
1316         type.primitive = sig::pointer_P;
1317         type.data.data.type = internal->type_;
1318         type.data.data.size = 0;
1319     }
1320
1321     return CYMakeType(context, &type);
1322 } CYCatch(NULL) }
1323
1324 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1325     if (count != 1)
1326         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1327     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1328
1329     CYPool pool;
1330     const char *name(CYPoolCString(pool, context, arguments[0]));
1331
1332     sig::Type type(*internal->type_);
1333     type.name = name;
1334     return CYMakeType(context, &type);
1335 } CYCatch(NULL) }
1336
1337 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1338     if (count != 1)
1339         throw CYJSError(context, "incorrect number of arguments to type cast function");
1340     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1341
1342     if (internal->type_->primitive == sig::function_P)
1343         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1344
1345     sig::Type *type(internal->type_);
1346     ffi_type *ffi(internal->GetFFI());
1347     // XXX: alignment?
1348     uint8_t value[ffi->size];
1349     CYPool pool;
1350     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1351     return CYFromFFI(context, type, ffi, value);
1352 } CYCatch(NULL) }
1353
1354 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1355     if (count != 0)
1356         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1357     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1358
1359     sig::Type *type(internal->type_);
1360     size_t length;
1361
1362     if (type->primitive != sig::array_P)
1363         length = _not(size_t);
1364     else {
1365         length = type->data.data.size;
1366         type = type->data.data.type;
1367     }
1368
1369     void *value(calloc(1, internal->GetFFI()->size));
1370     return CYMakePointer(context, value, length, type, NULL, NULL);
1371 } CYCatch(NULL) }
1372
1373 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1374     if (count != 2)
1375         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1376     CYPool pool;
1377     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1378     sig::Signature signature;
1379     sig::Parse(pool, &signature, encoding, &Structor_);
1380     return CYMakeFunctor(context, arguments[0], signature);
1381 } CYCatch(NULL) }
1382
1383 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1384     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1385     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1386 } CYCatch(NULL) }
1387
1388 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1389     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1390 }
1391
1392 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1393     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1394     char string[32];
1395     sprintf(string, "%p", internal->value_);
1396     return CYCastJSValue(context, string);
1397 } CYCatch(NULL) }
1398
1399 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1400     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1401
1402     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1403     if (internal->length_ != _not(size_t)) {
1404         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1405         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1406         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1407     } else if (internal->type_->type_ == NULL) pointer: {
1408         char string[32];
1409         sprintf(string, "%p", internal->value_);
1410         return CYCastJSValue(context, string);
1411     } try {
1412         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1413         if (JSValueIsUndefined(context, value))
1414             goto pointer;
1415         CYPool pool;
1416         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1417     } catch (const CYException &e) {
1418         goto pointer;
1419     }
1420 } CYCatch(NULL) }
1421
1422 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1423     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1424     return CYMakeType(context, internal->type_->type_);
1425 } CYCatch(NULL) }
1426
1427 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1428     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1429     return CYMakeType(context, &internal->signature_);
1430 } CYCatch(NULL) }
1431
1432 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1433     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1434     return CYCastJSValue(context, internal->GetFFI()->alignment);
1435 } CYCatch(NULL) }
1436
1437 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1438     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1439     return CYCastJSValue(context, internal->type_->name);
1440 } CYCatch(NULL) }
1441
1442 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1443     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1444     return CYCastJSValue(context, internal->GetFFI()->size);
1445 } CYCatch(NULL) }
1446
1447 static JSValueRef Type_callAsFunction_toString(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     CYPool pool;
1450     const char *type(sig::Unparse(pool, internal->type_));
1451     return CYCastJSValue(context, CYJSString(type));
1452 } CYCatch(NULL) }
1453
1454 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1455     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1456     CYLocalPool pool;
1457     std::ostringstream out;
1458     CYOptions options;
1459     CYOutput output(out, options);
1460     (new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1461     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1462 } CYCatch(NULL) }
1463
1464 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1465     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1466 }
1467
1468 static JSStaticFunction Pointer_staticFunctions[4] = {
1469     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1470     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1471     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1472     {NULL, NULL, 0}
1473 };
1474
1475 static JSStaticValue Pointer_staticValues[2] = {
1476     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1477     {NULL, NULL, NULL, 0}
1478 };
1479
1480 static JSStaticFunction Struct_staticFunctions[2] = {
1481     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1482     {NULL, NULL, 0}
1483 };
1484
1485 static JSStaticFunction Functor_staticFunctions[4] = {
1486     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1487     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1488     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1489     {NULL, NULL, 0}
1490 };
1491
1492 namespace cy {
1493     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1494 }
1495
1496 static JSStaticValue Functor_staticValues[2] = {
1497     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1498     {NULL, NULL, NULL, 0}
1499 };
1500
1501 namespace cy {
1502     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1503 }
1504
1505 static JSStaticValue Type_staticValues[4] = {
1506     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1507     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1508     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1509     {NULL, NULL, NULL, 0}
1510 };
1511
1512 static JSStaticFunction Type_staticFunctions[14] = {
1513     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1514     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1515     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1516     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1517     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1518     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1519     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1520     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1521     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1522     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1523     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1524     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1525     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1526     {NULL, NULL, 0}
1527 };
1528
1529 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1530
1531 void CYSetArgs(int argc, const char *argv[]) {
1532     JSContextRef context(CYGetJSContext());
1533     JSValueRef args[argc];
1534     for (int i(0); i != argc; ++i)
1535         args[i] = CYCastJSValue(context, argv[i]);
1536
1537     JSObjectRef array;
1538     if (JSObjectMakeArray$ != NULL)
1539         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1540     else {
1541         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1542         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1543         array = CYCastJSObject(context, value);
1544     }
1545
1546     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1547     CYSetProperty(context, System, CYJSString("args"), array);
1548 }
1549
1550 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1551     return JSContextGetGlobalObject(context);
1552 }
1553
1554 // XXX: this is neither exceptin safe nor even terribly sane
1555 class ExecutionHandle {
1556   private:
1557     JSContextRef context_;
1558     std::vector<void *> handles_;
1559
1560   public:
1561     ExecutionHandle(JSContextRef context) :
1562         context_(context)
1563     {
1564         handles_.resize(GetHooks().size());
1565         for (size_t i(0); i != GetHooks().size(); ++i) {
1566             CYHook *hook(GetHooks()[i]);
1567             if (hook->ExecuteStart != NULL)
1568                 handles_[i] = (*hook->ExecuteStart)(context_);
1569             else
1570                 handles_[i] = NULL;
1571         }
1572     }
1573
1574     ~ExecutionHandle() {
1575         for (size_t i(GetHooks().size()); i != 0; --i) {
1576             CYHook *hook(GetHooks()[i-1]);
1577             if (hook->ExecuteEnd != NULL)
1578                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1579         }
1580     }
1581 };
1582
1583 const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1584     JSValueRef exception(NULL);
1585
1586     ExecutionHandle handle(context);
1587
1588     JSValueRef result; try {
1589         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1590     } catch (const char *error) {
1591         return error;
1592     }
1593
1594     if (exception != NULL) error:
1595         return CYPoolCString(pool, context, CYJSString(context, exception));
1596
1597     if (JSValueIsUndefined(context, result))
1598         return NULL;
1599
1600     const char *json; try {
1601         std::set<void *> objects;
1602         json = CYPoolCCYON(pool, context, result, objects, &exception);
1603     } catch (const char *error) {
1604         return error;
1605     }
1606
1607     if (exception != NULL)
1608         goto error;
1609
1610     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1611
1612     return json;
1613 }
1614
1615 static bool initialized_ = false;
1616
1617 void CYInitializeDynamic() {
1618     if (!initialized_)
1619         initialized_ = true;
1620     else return;
1621
1622     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1623     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1624
1625     JSClassDefinition definition;
1626
1627     definition = kJSClassDefinitionEmpty;
1628     definition.className = "All";
1629     definition.hasProperty = &All_hasProperty;
1630     definition.getProperty = &All_getProperty;
1631     definition.getPropertyNames = &All_getPropertyNames;
1632     All_ = JSClassCreate(&definition);
1633
1634     definition = kJSClassDefinitionEmpty;
1635     definition.className = "Context";
1636     definition.finalize = &CYFinalize;
1637     Context_ = JSClassCreate(&definition);
1638
1639     definition = kJSClassDefinitionEmpty;
1640     definition.className = "Functor";
1641     definition.staticFunctions = cy::Functor::StaticFunctions;
1642     definition.staticValues = Functor_staticValues;
1643     definition.callAsFunction = &Functor_callAsFunction;
1644     definition.finalize = &CYFinalize;
1645     Functor_ = JSClassCreate(&definition);
1646
1647     definition = kJSClassDefinitionEmpty;
1648     definition.className = "Pointer";
1649     definition.staticFunctions = Pointer_staticFunctions;
1650     definition.staticValues = Pointer_staticValues;
1651     definition.getProperty = &Pointer_getProperty;
1652     definition.setProperty = &Pointer_setProperty;
1653     definition.finalize = &CYFinalize;
1654     Pointer_ = JSClassCreate(&definition);
1655
1656     definition = kJSClassDefinitionEmpty;
1657     definition.className = "Struct";
1658     definition.staticFunctions = Struct_staticFunctions;
1659     definition.getProperty = &Struct_getProperty;
1660     definition.setProperty = &Struct_setProperty;
1661     definition.getPropertyNames = &Struct_getPropertyNames;
1662     definition.finalize = &CYFinalize;
1663     Struct_ = JSClassCreate(&definition);
1664
1665     definition = kJSClassDefinitionEmpty;
1666     definition.className = "Type";
1667     definition.staticValues = Type_staticValues;
1668     definition.staticFunctions = Type_staticFunctions;
1669     definition.callAsFunction = &Type_callAsFunction;
1670     definition.callAsConstructor = &Type_callAsConstructor;
1671     definition.finalize = &CYFinalize;
1672     Type_privateData::Class_ = JSClassCreate(&definition);
1673
1674     definition = kJSClassDefinitionEmpty;
1675     definition.className = "Global";
1676     //definition.getProperty = &Global_getProperty;
1677     Global_ = JSClassCreate(&definition);
1678
1679     Array_s = JSStringCreateWithUTF8CString("Array");
1680     cy_s = JSStringCreateWithUTF8CString("$cy");
1681     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1682     length_s = JSStringCreateWithUTF8CString("length");
1683     message_s = JSStringCreateWithUTF8CString("message");
1684     name_s = JSStringCreateWithUTF8CString("name");
1685     pop_s = JSStringCreateWithUTF8CString("pop");
1686     prototype_s = JSStringCreateWithUTF8CString("prototype");
1687     push_s = JSStringCreateWithUTF8CString("push");
1688     splice_s = JSStringCreateWithUTF8CString("splice");
1689     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1690     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1691     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1692     toString_s = JSStringCreateWithUTF8CString("toString");
1693
1694     Result_ = JSStringCreateWithUTF8CString("_");
1695
1696     for (CYHook *hook : GetHooks())
1697         if (hook->Initialize != NULL)
1698             (*hook->Initialize)();
1699 }
1700
1701 void CYThrow(JSContextRef context, JSValueRef value) {
1702     if (value != NULL)
1703         throw CYJSError(context, value);
1704 }
1705
1706 const char *CYJSError::PoolCString(CYPool &pool) const {
1707     std::set<void *> objects;
1708     // XXX: this used to be CYPoolCString
1709     return CYPoolCCYON(pool, context_, value_, objects);
1710 }
1711
1712 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1713     // XXX: what if the context is different?
1714     return value_;
1715 }
1716
1717 JSValueRef CYCastJSError(JSContextRef context, const char *message) {
1718     JSObjectRef Error(CYGetCachedObject(context, CYJSString("Error")));
1719     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1720     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1721 }
1722
1723 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1724     return CYCastJSError(context, message_);
1725 }
1726
1727 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1728     _assert(context != NULL);
1729
1730     CYPool pool;
1731
1732     va_list args;
1733     va_start(args, format);
1734     // XXX: there might be a beter way to think about this
1735     const char *message(pool.vsprintf(64, format, args));
1736     va_end(args);
1737
1738     value_ = CYCastJSError(context, message);
1739 }
1740
1741 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1742     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1743 }
1744
1745 extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
1746
1747 void *CYMapFile(const char *path, size_t *psize) {
1748     int fd(_syscall_(open(path, O_RDONLY), 1, {ENOENT}));
1749     if (fd == -1)
1750         return NULL;
1751
1752     struct stat stat;
1753     _syscall(fstat(fd, &stat));
1754     size_t size(stat.st_size);
1755
1756     *psize = size;
1757
1758     void *base;
1759     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1760
1761     _syscall(close(fd));
1762     return base;
1763 }
1764
1765 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1766     _assert(count == 1);
1767     CYPool pool;
1768
1769     Dl_info addr;
1770     _assert(dladdr(reinterpret_cast<void *>(&require), &addr) != 0);
1771     char *lib(pool.strdup(addr.dli_fname));
1772
1773     char *slash(strrchr(lib, '/'));
1774     _assert(slash != NULL);
1775     *slash = '\0';
1776
1777     CYJSString property("exports");
1778     JSObjectRef module;
1779
1780     const char *name(CYPoolCString(pool, context, arguments[0]));
1781     const char *path(pool.strcat(lib, "/cycript0.9/", name, ".cy", NULL));
1782
1783     CYJSString key(path);
1784     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1785     JSValueRef cache(CYGetProperty(context, modules, key));
1786
1787     if (!JSValueIsUndefined(context, cache))
1788         module = CYCastJSObject(context, cache);
1789     else {
1790         CYUTF8String code;
1791         code.data = reinterpret_cast<char *>(CYMapFile(path, &code.size));
1792
1793         if (code.data == NULL) {
1794             if (strchr(name, '/') == NULL && (
1795 #ifdef __APPLE__
1796                 dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1797                 dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1798 #endif
1799             false))
1800                 return CYJSUndefined(NULL);
1801
1802             CYThrow("Can't find module: %s", name);
1803         }
1804
1805         module = JSObjectMake(context, NULL, NULL);
1806         CYSetProperty(context, modules, key, module);
1807
1808         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1809         CYSetProperty(context, module, property, exports);
1810
1811         std::stringstream wrap;
1812         wrap << "(function (exports, require, module) { " << code << "\n});";
1813         code = CYPoolCode(pool, wrap);
1814
1815         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1816         JSObjectRef function(CYCastJSObject(context, value));
1817
1818         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1819         CYCallAsFunction(context, function, NULL, 3, arguments);
1820     }
1821
1822     return CYGetProperty(context, module, property);
1823 } CYCatch(NULL) }
1824
1825 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1826     CYInitializeDynamic();
1827
1828     JSObjectRef global(CYGetGlobalObject(context));
1829
1830     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1831     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1832
1833 /* Cache Globals {{{ */
1834     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1835     CYSetProperty(context, cy, CYJSString("Array"), Array);
1836
1837     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1838     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1839
1840     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
1841     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
1842
1843     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
1844     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
1845
1846     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1847     CYSetProperty(context, cy, CYJSString("Error"), Error);
1848
1849     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1850     CYSetProperty(context, cy, CYJSString("Function"), Function);
1851
1852     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1853     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1854
1855     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
1856     CYSetProperty(context, cy, CYJSString("Number"), Number);
1857
1858     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
1859     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
1860
1861     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1862     CYSetProperty(context, cy, CYJSString("Object"), Object);
1863
1864     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1865     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1866
1867     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1868     CYSetProperty(context, cy, CYJSString("String"), String);
1869
1870     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1871     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1872 /* }}} */
1873
1874     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1875     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1876
1877     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1878     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1879     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1880
1881     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1882     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1883     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1884
1885     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1886     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1887
1888     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1889     CYSetProperty(context, cy, CYJSString("modules"), modules);
1890
1891     JSObjectRef all(JSObjectMake(context, All_, NULL));
1892     CYSetProperty(context, cycript, CYJSString("all"), all);
1893
1894     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1895     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1896
1897     if (true) {
1898         JSObjectRef last(NULL), curr(global);
1899
1900         goto next; for (JSValueRef next;;) {
1901             if (JSValueIsNull(context, next))
1902                 break;
1903             last = curr;
1904             curr = CYCastJSObject(context, next);
1905           next:
1906             next = JSObjectGetPrototype(context, curr);
1907         }
1908
1909         CYSetPrototype(context, last, all);
1910     }
1911
1912     CYSetProperty(context, global, CYJSString("$cyq"), &$cyq, kJSPropertyAttributeDontEnum);
1913
1914     JSObjectRef System(JSObjectMake(context, NULL, NULL));
1915     CYSetProperty(context, cy, CYJSString("System"), System);
1916
1917     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
1918
1919     CYSetProperty(context, global, CYJSString("system"), System);
1920     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
1921     //CYSetProperty(context, System, CYJSString("global"), global);
1922     CYSetProperty(context, System, CYJSString("print"), &System_print);
1923
1924     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
1925         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
1926
1927     for (CYHook *hook : GetHooks())
1928         if (hook->SetupContext != NULL)
1929             (*hook->SetupContext)(context);
1930
1931     CYArrayPush(context, alls, cycript);
1932 }
1933
1934 static JSGlobalContextRef context_;
1935
1936 JSGlobalContextRef CYGetJSContext() {
1937     CYInitializeDynamic();
1938
1939     if (context_ == NULL) {
1940         context_ = JSGlobalContextCreate(Global_);
1941         CYSetupContext(context_);
1942     }
1943
1944     return context_;
1945 }
1946
1947 void CYDestroyContext() {
1948     if (context_ == NULL)
1949         return;
1950     JSGlobalContextRelease(context_);
1951     context_ = NULL;
1952 }