ObjectiveC/Library.mm

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  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 "cycript.hpp"
  23
  24 #include <cmath>
  25
  26 #include <map>
  27 #include <set>
  28
  29 #include <dlfcn.h>
  30
  31 #ifdef __APPLE__
  32 #include <malloc/malloc.h>
  33 #include <mach/mach.h>
  34 #endif
  35
  36 #include <objc/message.h>
  37 #include <objc/runtime.h>
  38
  39 #ifdef __APPLE__
  40 #include <CoreFoundation/CoreFoundation.h>
  41 #include <JavaScriptCore/JSStringRefCF.h>
  42 #endif
  43
  44 #include <Foundation/Foundation.h>
  45
  46 #include "Code.hpp"
  47 #include "Decode.hpp"
  48 #include "Error.hpp"
  49 #include "JavaScript.hpp"
  50 #include "String.hpp"
  51 #include "Execute.hpp"
  52
  53 #include "ObjectiveC/Internal.hpp"
  54 #include "ObjectiveC/Syntax.hpp"
  55
  56 #define CYObjectiveTry_ { \
  57     try
  58 #define CYObjectiveTry { \
  59     JSContextRef context(context_); \
  60     try
  61 #define CYObjectiveCatch \
  62     catch (const CYException &error) { \
  63         @throw CYCastNSObject(NULL, context, error.CastJSValue(context, "Error")); \
  64     } \
  65 }
  66
  67 #define CYPoolTry { \
  68     id _saved(nil); \
  69     NSAutoreleasePool *_pool([[NSAutoreleasePool alloc] init]); \
  70     @try
  71 #define CYPoolCatch(value) \
  72     @catch (NSException *error) { \
  73         _saved = [error retain]; \
  74         throw CYJSError(context, CYCastJSValue(context, error)); \
  75         return value; \
  76     } @finally { \
  77         [_pool release]; \
  78         if (_saved != nil) \
  79             [_saved autorelease]; \
  80     } \
  81 }
  82
  83 #define CYSadTry { \
  84     @try
  85 #define CYSadCatch(value) \
  86     @catch (NSException *error ) { \
  87         throw CYJSError(context, CYCastJSValue(context, error)); \
  88     } return value; \
  89 }
  90
  91 #define _oassert(test) \
  92     if (!(test)) \
  93         @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:@"_assert(" #test ")" userInfo:nil];
  94
  95 @class NSBlock;
  96
  97 struct BlockLiteral {
  98     Class isa;
  99     int flags;
 100     int reserved;
 101     void (*invoke)(void *, ...);
 102     void *descriptor;
 103 };
 104
 105 struct BlockDescriptor1 {
 106     unsigned long int reserved;
 107     unsigned long int size;
 108 };
 109
 110 struct BlockDescriptor2 {
 111     void (*copy_helper)(BlockLiteral *dst, BlockLiteral *src);
 112     void (*dispose_helper)(BlockLiteral *src);
 113 };
 114
 115 struct BlockDescriptor3 {
 116     const char *signature;
 117     const char *layout;
 118 };
 119
 120 enum {
 121     BLOCK_DEALLOCATING = 0x0001,
 122     BLOCK_REFCOUNT_MASK = 0xfffe,
 123     BLOCK_NEEDS_FREE = 1 << 24,
 124     BLOCK_HAS_COPY_DISPOSE = 1 << 25,
 125     BLOCK_HAS_CTOR = 1 << 26,
 126     BLOCK_IS_GC = 1 << 27,
 127     BLOCK_IS_GLOBAL = 1 << 28,
 128     BLOCK_HAS_STRET = 1 << 29,
 129     BLOCK_HAS_SIGNATURE = 1 << 30,
 130 };
 131
 132 JSValueRef CYSendMessage(CYPool &pool, JSContextRef context, id self, Class super, SEL _cmd, size_t count, const JSValueRef arguments[], bool initialize);
 133
 134 /* Objective-C Pool Release {{{ */
 135 void CYPoolRelease_(void *data) {
 136     id object(reinterpret_cast<id>(data));
 137     [object release];
 138 }
 139
 140 id CYPoolRelease_(CYPool *pool, id object) {
 141     if (object == nil)
 142         return nil;
 143     else if (pool == NULL)
 144         return [object autorelease];
 145     else {
 146         pool->atexit(CYPoolRelease_);
 147         return object;
 148     }
 149 }
 150
 151 template <typename Type_>
 152 Type_ CYPoolRelease(CYPool *pool, Type_ object) {
 153     return (Type_) CYPoolRelease_(pool, (id) object);
 154 }
 155 /* }}} */
 156 /* Objective-C Strings {{{ */
 157 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, NSString *value) {
 158     size_t size([value maximumLengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
 159     char *string(new(pool) char[size + 1]);
 160     if (![value getCString:string maxLength:size encoding:NSUTF8StringEncoding])
 161         throw CYJSError(context, "[NSString getCString:maxLength:encoding:] == NO");
 162     return CYUTF8String(string, [value lengthOfBytesUsingEncoding:NSUTF8StringEncoding]);
 163 }
 164
 165 const char *CYPoolCString(CYPool &pool, JSContextRef context, NSString *value) {
 166     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 167     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 168     return utf8.data;
 169 }
 170
 171 #ifdef __clang__
 172 JSStringRef CYCopyJSString(JSContextRef context, NSString *value) {
 173     return JSStringCreateWithCFString(reinterpret_cast<CFStringRef>(value));
 174 }
 175 #endif
 176
 177 JSStringRef CYCopyJSString(JSContextRef context, NSObject *value) {
 178     if (value == nil)
 179         return NULL;
 180     // XXX: this definition scares me; is anyone using this?!
 181     NSString *string([value description]);
 182 #ifdef __clang__
 183     return CYCopyJSString(context, string);
 184 #else
 185     CYPool pool;
 186     return CYCopyJSString(CYPoolUTF8String(pool, context, string));
 187 #endif
 188 }
 189
 190 NSString *CYCopyNSString(const CYUTF8String &value) {
 191 #ifdef __APPLE__
 192     return (NSString *) CFStringCreateWithBytes(kCFAllocatorDefault, reinterpret_cast<const UInt8 *>(value.data), value.size, kCFStringEncodingUTF8, true);
 193 #else
 194     return [[NSString alloc] initWithBytes:value.data length:value.size encoding:NSUTF8StringEncoding];
 195 #endif
 196 }
 197
 198 NSString *CYCopyNSString(JSContextRef context, JSStringRef value) {
 199 #ifdef __APPLE__
 200     return (NSString *) JSStringCopyCFString(kCFAllocatorDefault, value);
 201 #else
 202     CYPool pool;
 203     return CYCopyNSString(CYPoolUTF8String(pool, context, value));
 204 #endif
 205 }
 206
 207 NSString *CYCopyNSString(JSContextRef context, JSValueRef value) {
 208     return CYCopyNSString(context, CYJSString(context, value));
 209 }
 210
 211 NSString *CYCastNSString(CYPool *pool, const CYUTF8String &value) {
 212     return CYPoolRelease(pool, CYCopyNSString(value));
 213 }
 214
 215 NSString *CYCastNSString(CYPool *pool, SEL sel) {
 216     const char *name(sel_getName(sel));
 217     return CYPoolRelease(pool, CYCopyNSString(CYUTF8String(name, strlen(name))));
 218 }
 219
 220 NSString *CYCastNSString(CYPool *pool, JSContextRef context, JSStringRef value) {
 221     return CYPoolRelease(pool, CYCopyNSString(context, value));
 222 }
 223
 224 CYUTF8String CYCastUTF8String(NSString *value) {
 225     NSData *data([value dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO]);
 226     return CYUTF8String(reinterpret_cast<const char *>([data bytes]), [data length]);
 227 }
 228 /* }}} */
 229
 230 JSValueRef CYCastJSValue(JSContextRef context, NSObject *value);
 231
 232 void CYThrow(JSContextRef context, NSException *error, JSValueRef *exception) {
 233     if (exception == NULL)
 234         throw error;
 235     *exception = CYCastJSValue(context, error);
 236 }
 237
 238 size_t CYGetIndex(NSString *value) {
 239     return CYGetIndex(CYCastUTF8String(value));
 240 }
 241
 242 bool CYGetOffset(CYPool &pool, JSContextRef context, NSString *value, ssize_t &index) {
 243     return CYGetOffset(CYPoolCString(pool, context, value), index);
 244 }
 245
 246 static JSClassRef ArrayInstance_;
 247 static JSClassRef BooleanInstance_;
 248 static JSClassRef ClassInstance_;
 249 static JSClassRef FunctionInstance_;
 250 static JSClassRef NumberInstance_;
 251 static JSClassRef ObjectInstance_;
 252 static JSClassRef StringInstance_;
 253
 254 static JSClassRef ObjectiveC_Classes_;
 255 static JSClassRef ObjectiveC_Constants_;
 256 static JSClassRef ObjectiveC_Protocols_;
 257
 258 #ifdef __APPLE__
 259 static JSClassRef ObjectiveC_Image_Classes_;
 260 static JSClassRef ObjectiveC_Images_;
 261 #endif
 262
 263 #ifdef __APPLE__
 264 static Class __NSMallocBlock__;
 265 static Class NSCFBoolean_;
 266 static Class NSCFType_;
 267 static Class NSGenericDeallocHandler_;
 268 #else
 269 static Class NSBoolNumber_;
 270 #endif
 271
 272 static Class NSArray_;
 273 static Class NSBlock_;
 274 static Class NSDictionary_;
 275 static Class NSNumber_;
 276 static Class NSString_;
 277 static Class NSZombie_;
 278 static Class Object_;
 279
 280 static JSValueRef Instance_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception);
 281
 282 JSValueRef CYGetClassPrototype(JSContextRef context, Class self, bool meta) {
 283     if (self == nil)
 284         return CYGetCachedObject(context, CYJSString("Instance_prototype"));
 285     else if (meta && !class_isMetaClass(self))
 286         return CYGetCachedObject(context, CYJSString("ClassInstance_prototype"));
 287
 288     JSObjectRef global(CYGetGlobalObject(context));
 289     JSObjectRef cy(CYCastJSObject(context, CYGetProperty(context, global, cy_s)));
 290
 291     char label[32];
 292     sprintf(label, "i%p", self);
 293     CYJSString name(label);
 294
 295     JSValueRef value(CYGetProperty(context, cy, name));
 296     if (!JSValueIsUndefined(context, value))
 297         return value;
 298
 299     JSValueRef prototype;
 300
 301 #ifdef __APPLE__
 302     if (self == NSCFBoolean_)
 303 #else
 304     if (self == NSBoolNumber_)
 305 #endif
 306         prototype = CYGetCachedObject(context, CYJSString("BooleanInstance_prototype"));
 307     else if (self == NSArray_)
 308         prototype = CYGetCachedObject(context, CYJSString("ArrayInstance_prototype"));
 309     else if (self == NSBlock_)
 310         prototype = CYGetCachedObject(context, CYJSString("FunctionInstance_prototype"));
 311     else if (self == NSNumber_)
 312         prototype = CYGetCachedObject(context, CYJSString("NumberInstance_prototype"));
 313     else if (self == NSDictionary_)
 314         prototype = CYGetCachedObject(context, CYJSString("ObjectInstance_prototype"));
 315     else if (self == NSString_)
 316         prototype = CYGetCachedObject(context, CYJSString("StringInstance_prototype"));
 317     else
 318         prototype = CYGetClassPrototype(context, class_getSuperclass(self), meta);
 319
 320     JSObjectRef object(JSObjectMake(context, NULL, NULL));
 321     CYSetPrototype(context, object, prototype);
 322     CYSetProperty(context, cy, name, object);
 323
 324     return object;
 325 }
 326
 327 _finline JSValueRef CYGetClassPrototype(JSContextRef context, Class self) {
 328     return CYGetClassPrototype(context, self, class_isMetaClass(self));
 329 }
 330
 331 JSValueRef Messages::GetPrototype(JSContextRef context) const {
 332     if (Class super = class_getSuperclass(value_))
 333         return Messages::Make(context, super);
 334     return NULL;
 335 }
 336
 337 bool CYIsKindOfClass(id object, Class _class) {
 338     for (Class isa(object_getClass(object)); isa != NULL; isa = class_getSuperclass(isa))
 339         if (isa == _class)
 340             return true;
 341     return false;
 342 }
 343
 344 JSValueRef Instance::GetPrototype(JSContextRef context) const {
 345     return CYGetClassPrototype(context, object_getClass(value_));
 346 }
 347
 348 JSClassRef Instance::GetClass(id object, Flags flags) {
 349     return CYIsKindOfClass(object, NSBlock_) ? FunctionInstance_ : Instance::Class_;
 350 }
 351
 352 Instance::Instance(id value, Flags flags) :
 353     CYValue(value),
 354     flags_(flags)
 355 {
 356     if ((flags & Instance::Permanent) == 0)
 357         value_ = [value_ retain];
 358 }
 359
 360 Instance::~Instance() {
 361     if ((flags_ & Permanent) == 0)
 362         [value_ release];
 363 }
 364
 365 struct Message_privateData :
 366     cy::Functor
 367 {
 368     static JSClassRef Class_;
 369
 370     SEL sel_;
 371
 372     Message_privateData(SEL sel, const char *type, IMP value) :
 373         cy::Functor(reinterpret_cast<void (*)()>(value), type),
 374         sel_(sel)
 375     {
 376     }
 377
 378     static JSObjectRef Make(JSContextRef context, SEL sel, const char *type, IMP value);
 379 };
 380
 381 JSClassRef Message_privateData::Class_;
 382
 383 JSObjectRef CYMakeInstance(JSContextRef context, id object, Instance::Flags flags = Instance::None) {
 384     _assert(object != nil);
 385
 386 #ifdef __APPLE__
 387     JSWeakObjectMapRef weak(CYCastPointer<JSWeakObjectMapRef>(context, CYGetCachedValue(context, weak_s)));
 388
 389     if (weak != NULL && &JSWeakObjectMapGet != NULL)
 390         if (JSObjectRef instance = JSWeakObjectMapGet(context, weak, object))
 391             return instance;
 392 #endif
 393
 394     JSObjectRef instance(Instance::Make(context, object, flags));
 395
 396 #ifdef __APPLE__
 397     if (weak != NULL && &JSWeakObjectMapSet != NULL)
 398         JSWeakObjectMapSet(context, weak, object, instance);
 399 #endif
 400
 401     return instance;
 402 }
 403
 404 @interface NSMethodSignature (Cycript)
 405 - (NSString *) _typeString;
 406 @end
 407
 408 @interface NSObject (Cycript)
 409
 410 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context;
 411 - (JSType) cy$JSType;
 412
 413 - (JSValueRef) cy$toJSON:(NSString *)key inContext:(JSContextRef)context;
 414 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects;
 415
 416 - (bool) cy$hasProperty:(NSString *)name;
 417 - (NSObject *) cy$getProperty:(NSString *)name;
 418 - (JSValueRef) cy$getProperty:(NSString *)name inContext:(JSContextRef)context;
 419 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value;
 420 - (bool) cy$deleteProperty:(NSString *)name;
 421 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context;
 422
 423 + (bool) cy$hasImplicitProperties;
 424
 425 @end
 426
 427 @protocol Cycript
 428 - (id) cy$box;
 429 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context;
 430 @end
 431
 432 NSString *CYCastNSCYON(id value, bool objective, std::set<void *> &objects) {
 433     _assert(value != nil);
 434
 435     Class _class(object_getClass(value));
 436
 437     if (class_isMetaClass(_class)) {
 438         const char *name(class_getName(value));
 439         if (class_isMetaClass(value))
 440             return [NSString stringWithFormat:@"object_getClass(%s)", name];
 441         else
 442             return [NSString stringWithUTF8String:name];
 443     }
 444
 445     if (_class == NSZombie_)
 446         return [NSString stringWithFormat:@"<_NSZombie_: %p>", value];
 447
 448     SEL sel(@selector(cy$toCYON:inSet:));
 449
 450     if (objc_method *toCYON = class_getInstanceMethod(_class, sel))
 451         return reinterpret_cast<NSString *(*)(id, SEL, bool, std::set<void *> &)>(method_getImplementation(toCYON))(value, sel, objective, objects);
 452     else if (objc_method *methodSignatureForSelector = class_getInstanceMethod(_class, @selector(methodSignatureForSelector:)))
 453         if (reinterpret_cast<NSMethodSignature *(*)(id, SEL, SEL)>(method_getImplementation(methodSignatureForSelector))(value, @selector(methodSignatureForSelector:), sel) != nil)
 454             return [value cy$toCYON:objective inSet:objects];
 455
 456     return [NSString stringWithFormat:@"%@", value];
 457 }
 458
 459 NSString *CYCastNSCYON(id value, bool objective, std::set<void *> *objects) {
 460     if (objects != NULL)
 461         return CYCastNSCYON(value, objective, *objects);
 462     else {
 463         std::set<void *> objects;
 464         return CYCastNSCYON(value, objective, objects);
 465     }
 466 }
 467
 468 struct PropertyAttributes {
 469     CYPool pool_;
 470
 471     const char *name;
 472
 473     const char *variable;
 474
 475     const char *getter_;
 476     const char *setter_;
 477
 478     bool readonly;
 479     bool copy;
 480     bool retain;
 481     bool nonatomic;
 482     bool dynamic;
 483     bool weak;
 484     bool garbage;
 485
 486     PropertyAttributes(objc_property_t property) :
 487         variable(NULL),
 488         getter_(NULL),
 489         setter_(NULL),
 490         readonly(false),
 491         copy(false),
 492         retain(false),
 493         nonatomic(false),
 494         dynamic(false),
 495         weak(false),
 496         garbage(false)
 497     {
 498         name = property_getName(property);
 499         const char *attributes(property_getAttributes(property));
 500
 501         for (char *token(pool_.strdup(attributes)), *next; token != NULL; token = next) {
 502             if ((next = strchr(token, ',')) != NULL)
 503                 *next++ = '\0';
 504             switch (*token) {
 505                 case 'R': readonly = true; break;
 506                 case 'C': copy = true; break;
 507                 case '&': retain = true; break;
 508                 case 'N': nonatomic = true; break;
 509                 case 'G': getter_ = token + 1; break;
 510                 case 'S': setter_ = token + 1; break;
 511                 case 'V': variable = token + 1; break;
 512             }
 513         }
 514
 515         /*if (variable == NULL) {
 516             variable = property_getName(property);
 517             size_t size(strlen(variable));
 518             char *name(new(pool_) char[size + 2]);
 519             name[0] = '_';
 520             memcpy(name + 1, variable, size);
 521             name[size + 1] = '\0';
 522             variable = name;
 523         }*/
 524     }
 525
 526     const char *Getter() {
 527         if (getter_ == NULL)
 528             getter_ = pool_.strdup(name);
 529         return getter_;
 530     }
 531
 532     const char *Setter() {
 533         if (setter_ == NULL && !readonly) {
 534             size_t length(strlen(name));
 535
 536             char *temp(new(pool_) char[length + 5]);
 537             temp[0] = 's';
 538             temp[1] = 'e';
 539             temp[2] = 't';
 540
 541             if (length != 0) {
 542                 temp[3] = toupper(name[0]);
 543                 memcpy(temp + 4, name + 1, length - 1);
 544             }
 545
 546             temp[length + 3] = ':';
 547             temp[length + 4] = '\0';
 548             setter_ = temp;
 549         }
 550
 551         return setter_;
 552     }
 553
 554 };
 555
 556 @interface CYWebUndefined : NSObject {
 557 }
 558
 559 + (CYWebUndefined *) undefined;
 560
 561 @end
 562
 563 @implementation CYWebUndefined
 564
 565 + (CYWebUndefined *) undefined {
 566     static CYWebUndefined *instance_([[CYWebUndefined alloc] init]);
 567     return instance_;
 568 }
 569
 570 @end
 571
 572 #define WebUndefined CYWebUndefined
 573
 574 /* Bridge: CYJSObject {{{ */
 575 @interface CYJSObject : NSMutableDictionary {
 576     JSObjectRef object_;
 577     JSGlobalContextRef context_;
 578 }
 579
 580 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 581
 582 - (NSUInteger) count;
 583 - (id) objectForKey:(id)key;
 584 - (NSEnumerator *) keyEnumerator;
 585 - (void) setObject:(id)object forKey:(id)key;
 586 - (void) removeObjectForKey:(id)key;
 587
 588 @end
 589 /* }}} */
 590 /* Bridge: CYJSArray {{{ */
 591 @interface CYJSArray : NSMutableArray {
 592     JSObjectRef object_;
 593     JSGlobalContextRef context_;
 594 }
 595
 596 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 597
 598 - (NSUInteger) count;
 599 - (id) objectAtIndex:(NSUInteger)index;
 600
 601 - (void) addObject:(id)anObject;
 602 - (void) insertObject:(id)anObject atIndex:(NSUInteger)index;
 603 - (void) removeLastObject;
 604 - (void) removeObjectAtIndex:(NSUInteger)index;
 605 - (void) replaceObjectAtIndex:(NSUInteger)index withObject:(id)anObject;
 606
 607 @end
 608 /* }}} */
 609
 610 _finline bool CYJSValueIsNSObject(JSContextRef context, JSValueRef value) {
 611     return JSValueIsObjectOfClass(context, value, Instance::Class_) || JSValueIsObjectOfClass(context, value, FunctionInstance_);
 612 }
 613
 614 _finline bool CYJSValueIsInstanceOfCachedConstructor(JSContextRef context, JSValueRef value, JSStringRef cache) {
 615     return _jsccall(JSValueIsInstanceOfConstructor, context, value, CYGetCachedObject(context, cache));
 616 }
 617
 618 #ifdef __APPLE__
 619 struct CYBlockDescriptor {
 620     struct {
 621         BlockDescriptor1 one_;
 622         BlockDescriptor2 two_;
 623         BlockDescriptor3 three_;
 624     } d_;
 625
 626     Closure_privateData *internal_;
 627 };
 628
 629 void CYDisposeBlock(BlockLiteral *literal) {
 630     delete reinterpret_cast<CYBlockDescriptor *>(literal->descriptor)->internal_;
 631 }
 632
 633 static JSValueRef BlockAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 634     JSObjectRef _this(CYCastJSObject(context, values[0]));
 635     return CYCallAsFunction(context, function, _this, count - 1, values + 1);
 636 }
 637
 638 NSBlock *CYMakeBlock(JSContextRef context, JSObjectRef function, sig::Signature &signature) {
 639     _assert(__NSMallocBlock__ != Nil);
 640     BlockLiteral *literal(reinterpret_cast<BlockLiteral *>(malloc(sizeof(BlockLiteral))));
 641
 642     CYBlockDescriptor *descriptor(new CYBlockDescriptor);
 643     memset(&descriptor->d_, 0, sizeof(descriptor->d_));
 644
 645     descriptor->internal_ = CYMakeFunctor_(context, function, signature, &BlockAdapter_);
 646     literal->invoke = reinterpret_cast<void (*)(void *, ...)>(descriptor->internal_->value_);
 647
 648     literal->isa = __NSMallocBlock__;
 649     literal->flags = BLOCK_HAS_SIGNATURE | BLOCK_HAS_COPY_DISPOSE | BLOCK_IS_GLOBAL;
 650     literal->reserved = 0;
 651     literal->descriptor = descriptor;
 652
 653     descriptor->d_.one_.size = sizeof(descriptor->d_);
 654     descriptor->d_.two_.dispose_helper = &CYDisposeBlock;
 655     descriptor->d_.three_.signature = sig::Unparse(*descriptor->internal_->pool_, &signature);
 656
 657     return reinterpret_cast<NSBlock *>(literal);
 658 }
 659 #endif
 660
 661 NSObject *CYCastNSObject(CYPool *pool, JSContextRef context, JSObjectRef object) {
 662     if (CYJSValueIsNSObject(context, object)) {
 663         Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
 664         return internal->value_;
 665     }
 666
 667     bool array(CYJSValueIsInstanceOfCachedConstructor(context, object, Array_s));
 668     id value(array ? [CYJSArray alloc] : [CYJSObject alloc]);
 669     return CYPoolRelease(pool, [value initWithJSObject:object inContext:context]);
 670 }
 671
 672 NSNumber *CYCopyNSNumber(JSContextRef context, JSValueRef value) {
 673     return [[NSNumber alloc] initWithDouble:CYCastDouble(context, value)];
 674 }
 675
 676 #ifndef __APPLE__
 677 @interface NSBoolNumber : NSNumber {
 678 }
 679 @end
 680 #endif
 681
 682 id CYNSObject(CYPool *pool, JSContextRef context, JSValueRef value, bool cast) {
 683     id object;
 684     bool copy;
 685
 686     switch (JSType type = JSValueGetType(context, value)) {
 687         case kJSTypeUndefined:
 688             object = [WebUndefined undefined];
 689             copy = false;
 690         break;
 691
 692         case kJSTypeNull:
 693             return NULL;
 694         break;
 695
 696         case kJSTypeBoolean:
 697 #ifdef __APPLE__
 698             object = (id) (CYCastBool(context, value) ? kCFBooleanTrue : kCFBooleanFalse);
 699             copy = false;
 700 #else
 701             object = [[NSBoolNumber alloc] initWithBool:CYCastBool(context, value)];
 702             copy = true;
 703 #endif
 704         break;
 705
 706         case kJSTypeNumber:
 707             object = CYCopyNSNumber(context, value);
 708             copy = true;
 709         break;
 710
 711         case kJSTypeString:
 712             object = CYCopyNSString(context, value);
 713             copy = true;
 714         break;
 715
 716         case kJSTypeObject:
 717             // XXX: this might could be more efficient
 718             object = CYCastNSObject(pool, context, (JSObjectRef) value);
 719             copy = false;
 720         break;
 721
 722         default:
 723             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 724         break;
 725     }
 726
 727     if (cast != copy)
 728         return object;
 729     else if (copy)
 730         return CYPoolRelease(pool, object);
 731     else
 732         return [object retain];
 733 }
 734
 735 NSObject *CYCastNSObject(CYPool *pool, JSContextRef context, JSValueRef value) {
 736     return CYNSObject(pool, context, value, true);
 737 }
 738
 739 NSObject *CYCopyNSObject(CYPool &pool, JSContextRef context, JSValueRef value) {
 740     return CYNSObject(&pool, context, value, false);
 741 }
 742
 743 /* Bridge: NSArray {{{ */
 744 @implementation NSArray (Cycript)
 745
 746 - (id) cy$box {
 747     return [[self mutableCopy] autorelease];
 748 }
 749
 750 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
 751     _oassert(objects.insert(self).second);
 752
 753     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 754     [json appendString:@"@["];
 755
 756     bool comma(false);
 757 #ifdef __clang__
 758     for (id object in self) {
 759 #else
 760     for (size_t index(0), count([self count]); index != count; ++index) {
 761         id object([self objectAtIndex:index]);
 762 #endif
 763         if (comma)
 764             [json appendString:@","];
 765         else
 766             comma = true;
 767         if (object != nil && [object cy$JSType] != kJSTypeUndefined)
 768             [json appendString:CYCastNSCYON(object, true, objects)];
 769         else {
 770             [json appendString:@","];
 771             comma = false;
 772         }
 773     }
 774
 775     [json appendString:@"]"];
 776     return json;
 777 }
 778
 779 - (bool) cy$hasProperty:(NSString *)name {
 780     if ([name isEqualToString:@"length"])
 781         return true;
 782
 783     size_t index(CYGetIndex(name));
 784     if (index == _not(size_t) || index >= [self count])
 785         return [super cy$hasProperty:name];
 786     else
 787         return true;
 788 }
 789
 790 - (NSObject *) cy$getProperty:(NSString *)name {
 791     size_t index(CYGetIndex(name));
 792     if (index == _not(size_t) || index >= [self count])
 793         return [super cy$getProperty:name];
 794     else
 795         return [self objectAtIndex:index];
 796 }
 797
 798 - (JSValueRef) cy$getProperty:(NSString *)name inContext:(JSContextRef)context {
 799     CYObjectiveTry_ {
 800         if ([name isEqualToString:@"length"])
 801             return CYCastJSValue(context, [self count]);
 802     } CYObjectiveCatch
 803
 804     return [super cy$getProperty:name inContext:context];
 805 }
 806
 807 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
 808     [super cy$getPropertyNames:names inContext:context];
 809
 810     for (size_t index(0), count([self count]); index != count; ++index) {
 811         id object([self objectAtIndex:index]);
 812         if (object == nil || [object cy$JSType] != kJSTypeUndefined) {
 813             char name[32];
 814             sprintf(name, "%zu", index);
 815             JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 816         }
 817     }
 818 }
 819
 820 + (bool) cy$hasImplicitProperties {
 821     return false;
 822 }
 823
 824 @end
 825 /* }}} */
 826 /* Bridge: NSBlock {{{ */
 827 #ifdef __APPLE__
 828 @interface NSBlock : NSObject
 829 - (void) invoke;
 830 @end
 831
 832 static const char *CYBlockEncoding(NSBlock *self);
 833 static bool CYBlockSignature(CYPool &pool, NSBlock *self, sig::Signature &signature);
 834
 835 @implementation NSBlock (Cycript)
 836
 837 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
 838     CYLocalPool pool;
 839
 840     sig::Block type;
 841     if (!CYBlockSignature(pool, self, type.signature))
 842         return [super cy$toCYON:objective inSet:objects];
 843     _oassert(objects.insert(self).second);
 844
 845     CYTypedIdentifier *typed((new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->typed_);
 846     CYTypeModifier *&modifier(CYGetLast(typed->modifier_));
 847     CYTypeBlockWith *with(dynamic_cast<CYTypeBlockWith *>(modifier));
 848     _assert(with != NULL);
 849     CYObjCBlock *block(new(pool) CYObjCBlock(typed, with->parameters_, NULL));
 850     modifier = NULL;
 851
 852     std::ostringstream str;
 853     CYOptions options;
 854     CYOutput out(*str.rdbuf(), options);
 855     block->Output(out, CYNoFlags);
 856
 857     std::string value(str.str());
 858     return CYCastNSString(NULL, CYUTF8String(value.c_str(), value.size()));
 859 }
 860
 861 @end
 862 #endif
 863 /* }}} */
 864 /* Bridge: NSBoolNumber {{{ */
 865 #ifndef __APPLE__
 866 @implementation NSBoolNumber (Cycript)
 867
 868 - (JSType) cy$JSType {
 869     return kJSTypeBoolean;
 870 }
 871
 872 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
 873     NSString *value([self boolValue] ? @"true" : @"false");
 874     return objective ? value : [NSString stringWithFormat:@"@%@", value];
 875 }
 876
 877 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_ {
 878     return CYCastJSValue(context, (bool) [self boolValue]);
 879 } CYObjectiveCatch }
 880
 881 @end
 882 #endif
 883 /* }}} */
 884 /* Bridge: NSDictionary {{{ */
 885 @implementation NSDictionary (Cycript)
 886
 887 - (id) cy$box {
 888     return [[self mutableCopy] autorelease];
 889 }
 890
 891 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
 892     _oassert(objects.insert(self).second);
 893
 894     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 895     [json appendString:@"@{"];
 896
 897     bool comma(false);
 898 #ifdef __clang__
 899     for (NSObject *key in self) {
 900 #else
 901     NSEnumerator *keys([self keyEnumerator]);
 902     while (NSObject *key = [keys nextObject]) {
 903 #endif
 904         if (comma)
 905             [json appendString:@","];
 906         else
 907             comma = true;
 908         [json appendString:CYCastNSCYON(key, true, objects)];
 909         [json appendString:@":"];
 910         NSObject *object([self objectForKey:key]);
 911         [json appendString:CYCastNSCYON(object, true, objects)];
 912     }
 913
 914     [json appendString:@"}"];
 915     return json;
 916 }
 917
 918 - (bool) cy$hasProperty:(NSString *)name {
 919     return [self objectForKey:name] != nil;
 920 }
 921
 922 - (NSObject *) cy$getProperty:(NSString *)name {
 923     return [self objectForKey:name];
 924 }
 925
 926 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
 927     [super cy$getPropertyNames:names inContext:context];
 928
 929 #ifdef __clang__
 930     for (NSObject *key in self) {
 931 #else
 932     NSEnumerator *keys([self keyEnumerator]);
 933     while (NSObject *key = [keys nextObject]) {
 934 #endif
 935         JSPropertyNameAccumulatorAddName(names, CYJSString(context, key));
 936     }
 937 }
 938
 939 + (bool) cy$hasImplicitProperties {
 940     return false;
 941 }
 942
 943 @end
 944 /* }}} */
 945 /* Bridge: NSMutableArray {{{ */
 946 @implementation NSMutableArray (Cycript)
 947
 948 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
 949     if ([name isEqualToString:@"length"]) {
 950         // XXX: is this not intelligent?
 951         NSNumber *number(reinterpret_cast<NSNumber *>(value));
 952         NSUInteger size([number unsignedIntegerValue]);
 953         NSUInteger count([self count]);
 954         if (size < count)
 955             [self removeObjectsInRange:NSMakeRange(size, count - size)];
 956         else if (size != count) {
 957             WebUndefined *undefined([WebUndefined undefined]);
 958             for (size_t i(count); i != size; ++i)
 959                 [self addObject:undefined];
 960         }
 961         return true;
 962     }
 963
 964     size_t index(CYGetIndex(name));
 965     if (index == _not(size_t))
 966         return [super cy$setProperty:name to:value];
 967
 968     id object(value ?: [NSNull null]);
 969
 970     size_t count([self count]);
 971     if (index < count)
 972         [self replaceObjectAtIndex:index withObject:object];
 973     else {
 974         if (index != count) {
 975             WebUndefined *undefined([WebUndefined undefined]);
 976             for (size_t i(count); i != index; ++i)
 977                 [self addObject:undefined];
 978         }
 979
 980         [self addObject:object];
 981     }
 982
 983     return true;
 984 }
 985
 986 - (bool) cy$deleteProperty:(NSString *)name {
 987     size_t index(CYGetIndex(name));
 988     if (index == _not(size_t) || index >= [self count])
 989         return [super cy$deleteProperty:name];
 990     [self replaceObjectAtIndex:index withObject:[WebUndefined undefined]];
 991     return true;
 992 }
 993
 994 @end
 995 /* }}} */
 996 /* Bridge: NSMutableDictionary {{{ */
 997 @implementation NSMutableDictionary (Cycript)
 998
 999 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
1000     [self setObject:(value ?: [NSNull null]) forKey:name];
1001     return true;
1002 }
1003
1004 - (bool) cy$deleteProperty:(NSString *)name {
1005     if ([self objectForKey:name] == nil)
1006         return false;
1007     else {
1008         [self removeObjectForKey:name];
1009         return true;
1010     }
1011 }
1012
1013 @end
1014 /* }}} */
1015 /* Bridge: NSNumber {{{ */
1016 @implementation NSNumber (Cycript)
1017
1018 - (JSType) cy$JSType {
1019 #ifdef __APPLE__
1020     // XXX: this just seems stupid
1021     if ([self class] == NSCFBoolean_)
1022         return kJSTypeBoolean;
1023 #endif
1024     return kJSTypeNumber;
1025 }
1026
1027 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1028     NSString *value([self cy$JSType] != kJSTypeBoolean ? [self stringValue] : [self boolValue] ? @"true" : @"false");
1029     return objective ? value : [NSString stringWithFormat:@"@%@", value];
1030 }
1031
1032 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_ {
1033     return [self cy$JSType] != kJSTypeBoolean ? CYCastJSValue(context, [self doubleValue]) : CYCastJSValue(context, static_cast<bool>([self boolValue]));
1034 } CYObjectiveCatch }
1035
1036 @end
1037 /* }}} */
1038 /* Bridge: NSNull {{{ */
1039 @implementation NSNull (Cycript)
1040
1041 - (JSType) cy$JSType {
1042     return kJSTypeNull;
1043 }
1044
1045 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1046     NSString *value(@"null");
1047     return objective ? value : [NSString stringWithFormat:@"@%@", value];
1048 }
1049
1050 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_ {
1051     return CYJSNull(context);
1052 } CYObjectiveCatch }
1053
1054 @end
1055 /* }}} */
1056 /* Bridge: NSObject {{{ */
1057 @implementation NSObject (Cycript)
1058
1059 - (id) cy$box {
1060     return self;
1061 }
1062
1063 - (JSValueRef) cy$toJSON:(NSString *)key inContext:(JSContextRef)context {
1064     return [self cy$valueOfInContext:context];
1065 }
1066
1067 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_ {
1068     return NULL;
1069 } CYObjectiveCatch }
1070
1071 - (JSType) cy$JSType {
1072     return kJSTypeObject;
1073 }
1074
1075 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1076     return [@"#" stringByAppendingString:[[self description] cy$toCYON:true inSet:objects]];
1077 }
1078
1079 - (bool) cy$hasProperty:(NSString *)name {
1080     return false;
1081 }
1082
1083 - (NSObject *) cy$getProperty:(NSString *)name {
1084     return nil;
1085 }
1086
1087 - (JSValueRef) cy$getProperty:(NSString *)name inContext:(JSContextRef)context { CYObjectiveTry_ {
1088     if (NSObject *value = [self cy$getProperty:name])
1089         return CYCastJSValue(context, value);
1090     return NULL;
1091 } CYObjectiveCatch }
1092
1093 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
1094     return false;
1095 }
1096
1097 - (bool) cy$deleteProperty:(NSString *)name {
1098     return false;
1099 }
1100
1101 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
1102 }
1103
1104 + (bool) cy$hasImplicitProperties {
1105     return true;
1106 }
1107
1108 @end
1109 /* }}} */
1110 /* Bridge: NSOrderedSet {{{ */
1111 #ifdef __APPLE__
1112 @implementation NSOrderedSet (Cycript)
1113
1114 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1115     _oassert(objects.insert(self).second);
1116
1117     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
1118     [json appendString:@"[NSOrderedSet orderedSetWithArray:"];
1119     [json appendString:CYCastNSCYON([self array], true, objects)];
1120     [json appendString:@"]]"];
1121     return json;
1122 }
1123
1124 @end
1125 #endif
1126 /* }}} */
1127 /* Bridge: NSProxy {{{ */
1128 @implementation NSProxy (Cycript)
1129
1130 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1131     return [[self description] cy$toCYON:objective inSet:objects];
1132 }
1133
1134 @end
1135 /* }}} */
1136 /* Bridge: NSSet {{{ */
1137 @implementation NSSet (Cycript)
1138
1139 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1140     _oassert(objects.insert(self).second);
1141
1142     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
1143     [json appendString:@"[NSSet setWithArray:"];
1144     [json appendString:CYCastNSCYON([self allObjects], true, objects)];
1145     [json appendString:@"]]"];
1146     return json;
1147 }
1148
1149 @end
1150 /* }}} */
1151 /* Bridge: NSString {{{ */
1152 @implementation NSString (Cycript)
1153
1154 - (id) cy$box {
1155     return [[self copy] autorelease];
1156 }
1157
1158 - (JSType) cy$JSType {
1159     return kJSTypeString;
1160 }
1161
1162 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1163     std::ostringstream str;
1164     if (!objective)
1165         str << '@';
1166     CYUTF8String string(CYCastUTF8String(self));
1167     CYStringify(str, string.data, string.size, true);
1168     std::string value(str.str());
1169     return CYCastNSString(NULL, CYUTF8String(value.c_str(), value.size()));
1170 }
1171
1172 - (bool) cy$hasProperty:(NSString *)name {
1173     size_t index(CYGetIndex(name));
1174     if (index == _not(size_t) || index >= [self length])
1175         return [super cy$hasProperty:name];
1176     else
1177         return true;
1178 }
1179
1180 - (NSObject *) cy$getProperty:(NSString *)name {
1181     size_t index(CYGetIndex(name));
1182     if (index == _not(size_t) || index >= [self length])
1183         return [super cy$getProperty:name];
1184     else
1185         return [self substringWithRange:NSMakeRange(index, 1)];
1186 }
1187
1188 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
1189     [super cy$getPropertyNames:names inContext:context];
1190
1191     for (size_t index(0), length([self length]); index != length; ++index) {
1192         char name[32];
1193         sprintf(name, "%zu", index);
1194         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1195     }
1196 }
1197
1198 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_ {
1199     return CYCastJSValue(context, CYJSString(context, self));
1200 } CYObjectiveCatch }
1201
1202 @end
1203 /* }}} */
1204 /* Bridge: WebUndefined {{{ */
1205 @implementation WebUndefined (Cycript)
1206
1207 - (JSType) cy$JSType {
1208     return kJSTypeUndefined;
1209 }
1210
1211 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects {
1212     NSString *value(@"undefined");
1213     return value; // XXX: maybe use the below code, adding @undefined?
1214     //return objective ? value : [NSString stringWithFormat:@"@%@", value];
1215 }
1216
1217 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_ {
1218     return CYJSUndefined(context);
1219 } CYObjectiveCatch }
1220
1221 @end
1222 /* }}} */
1223
1224 static bool CYIsClass(id self) {
1225     return class_isMetaClass(object_getClass(self));
1226 }
1227
1228 Class CYCastClass(CYPool &pool, JSContextRef context, JSValueRef value) {
1229     id self(CYCastNSObject(&pool, context, value));
1230     if (CYIsClass(self))
1231         return (Class) self;
1232     throw CYJSError(context, "got something that is not a Class");
1233     return NULL;
1234 }
1235
1236 NSArray *CYCastNSArray(JSContextRef context, JSPropertyNameArrayRef names) {
1237     CYPool pool;
1238     size_t size(JSPropertyNameArrayGetCount(names));
1239     NSMutableArray *array([NSMutableArray arrayWithCapacity:size]);
1240     for (size_t index(0); index != size; ++index)
1241         [array addObject:CYCastNSString(&pool, context, JSPropertyNameArrayGetNameAtIndex(names, index))];
1242     return array;
1243 }
1244
1245 JSValueRef CYCastJSValue(JSContextRef context, NSObject *value) {
1246     if (value == nil)
1247         return CYJSNull(context);
1248     return CYMakeInstance(context, value);
1249 }
1250
1251 @implementation CYJSObject
1252
1253 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context { CYObjectiveTry_ {
1254     if ((self = [super init]) != nil) {
1255         object_ = object;
1256         context_ = CYGetJSContext(context);
1257         JSGlobalContextRetain(context_);
1258         JSValueProtect(context_, object_);
1259     } return self;
1260 } CYObjectiveCatch }
1261
1262 - (void) dealloc { CYObjectiveTry {
1263     JSValueUnprotect(context_, object_);
1264     JSGlobalContextRelease(context_);
1265     [super dealloc];
1266 } CYObjectiveCatch }
1267
1268 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects { CYObjectiveTry {
1269     CYPool pool;
1270     const char *cyon(CYPoolCCYON(pool, context, object_, objects));
1271     if (cyon == NULL)
1272         return [super cy$toCYON:objective inSet:objects];
1273     else
1274         return [NSString stringWithUTF8String:cyon];
1275 } CYObjectiveCatch }
1276
1277 - (NSUInteger) count { CYObjectiveTry {
1278     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object_));
1279     size_t size(JSPropertyNameArrayGetCount(names));
1280     JSPropertyNameArrayRelease(names);
1281     return size;
1282 } CYObjectiveCatch }
1283
1284 - (id) objectForKey:(id)key { CYObjectiveTry {
1285     JSValueRef value(CYGetProperty(context, object_, CYJSString(context, (NSObject *) key)));
1286     if (JSValueIsUndefined(context, value))
1287         return nil;
1288     return CYCastNSObject(NULL, context, value) ?: [NSNull null];
1289 } CYObjectiveCatch }
1290
1291 - (NSEnumerator *) keyEnumerator { CYObjectiveTry {
1292     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object_));
1293     NSEnumerator *enumerator([CYCastNSArray(context, names) objectEnumerator]);
1294     JSPropertyNameArrayRelease(names);
1295     return enumerator;
1296 } CYObjectiveCatch }
1297
1298 - (void) setObject:(id)object forKey:(id)key { CYObjectiveTry {
1299     CYSetProperty(context, object_, CYJSString(context, (NSObject *) key), CYCastJSValue(context, (NSString *) object));
1300 } CYObjectiveCatch }
1301
1302 - (void) removeObjectForKey:(id)key { CYObjectiveTry {
1303     (void) _jsccall(JSObjectDeleteProperty, context, object_, CYJSString(context, (NSObject *) key));
1304 } CYObjectiveCatch }
1305
1306 @end
1307
1308 @implementation CYJSArray
1309
1310 - (NSString *) cy$toCYON:(bool)objective inSet:(std::set<void *> &)objects { CYObjectiveTry {
1311     CYPool pool;
1312     return [NSString stringWithUTF8String:CYPoolCCYON(pool, context, object_, objects)];
1313 } CYObjectiveCatch }
1314
1315 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context { CYObjectiveTry_ {
1316     if ((self = [super init]) != nil) {
1317         object_ = object;
1318         context_ = CYGetJSContext(context);
1319         JSGlobalContextRetain(context_);
1320         JSValueProtect(context_, object_);
1321     } return self;
1322 } CYObjectiveCatch }
1323
1324 - (void) dealloc { CYObjectiveTry {
1325     JSValueUnprotect(context_, object_);
1326     JSGlobalContextRelease(context_);
1327     [super dealloc];
1328 } CYObjectiveCatch }
1329
1330 - (NSUInteger) count { CYObjectiveTry {
1331     return CYArrayLength(context, object_);
1332 } CYObjectiveCatch }
1333
1334 - (id) objectAtIndex:(NSUInteger)index { CYObjectiveTry {
1335     size_t bounds([self count]);
1336     if (index >= bounds)
1337         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray objectAtIndex:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1338     JSValueRef value(_jsccall(JSObjectGetPropertyAtIndex, context, object_, index));
1339     return CYCastNSObject(NULL, context, value) ?: [NSNull null];
1340 } CYObjectiveCatch }
1341
1342 - (void) addObject:(id)object { CYObjectiveTry {
1343     CYArrayPush(context, object_, CYCastJSValue(context, (NSObject *) object));
1344 } CYObjectiveCatch }
1345
1346 - (void) insertObject:(id)object atIndex:(NSUInteger)index { CYObjectiveTry {
1347     size_t bounds([self count] + 1);
1348     if (index >= bounds)
1349         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray insertObject:atIndex:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1350     JSValueRef arguments[3];
1351     arguments[0] = CYCastJSValue(context, index);
1352     arguments[1] = CYCastJSValue(context, 0);
1353     arguments[2] = CYCastJSValue(context, (NSObject *) object);
1354     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1355     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, splice_s)), object_, 3, arguments);
1356 } CYObjectiveCatch }
1357
1358 - (void) removeLastObject { CYObjectiveTry {
1359     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1360     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, pop_s)), object_, 0, NULL);
1361 } CYObjectiveCatch }
1362
1363 - (void) removeObjectAtIndex:(NSUInteger)index { CYObjectiveTry {
1364     size_t bounds([self count]);
1365     if (index >= bounds)
1366         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray removeObjectAtIndex:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1367     JSValueRef arguments[2];
1368     arguments[0] = CYCastJSValue(context, index);
1369     arguments[1] = CYCastJSValue(context, 1);
1370     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1371     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, splice_s)), object_, 2, arguments);
1372 } CYObjectiveCatch }
1373
1374 - (void) replaceObjectAtIndex:(NSUInteger)index withObject:(id)object { CYObjectiveTry {
1375     size_t bounds([self count]);
1376     if (index >= bounds)
1377         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray replaceObjectAtIndex:withObject:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1378     CYSetProperty(context, object_, index, CYCastJSValue(context, (NSObject *) object));
1379 } CYObjectiveCatch }
1380
1381 @end
1382
1383 // XXX: inherit from or replace with CYJSObject
1384 @interface CYInternal : NSObject {
1385     JSGlobalContextRef context_;
1386     JSObjectRef object_;
1387 }
1388
1389 @end
1390
1391 @implementation CYInternal
1392
1393 - (void) dealloc { CYObjectiveTry {
1394     JSValueUnprotect(context_, object_);
1395     JSGlobalContextRelease(context_);
1396     [super dealloc];
1397 } CYObjectiveCatch }
1398
1399 - (id) initInContext:(JSContextRef)context { CYObjectiveTry_ {
1400     if ((self = [super init]) != nil) {
1401         context_ = CYGetJSContext(context);
1402         JSGlobalContextRetain(context_);
1403     } return self;
1404 } CYObjectiveCatch }
1405
1406 - (bool) hasProperty:(JSStringRef)name inContext:(JSContextRef)context {
1407     if (object_ == NULL)
1408         return false;
1409
1410     return JSObjectHasProperty(context, object_, name);
1411 }
1412
1413 - (JSValueRef) getProperty:(JSStringRef)name inContext:(JSContextRef)context {
1414     if (object_ == NULL)
1415         return NULL;
1416
1417     return CYGetProperty(context, object_, name);
1418 }
1419
1420 - (void) setProperty:(JSStringRef)name toValue:(JSValueRef)value inContext:(JSContextRef)context {
1421     @synchronized (self) {
1422         if (object_ == NULL) {
1423             object_ = JSObjectMake(context, NULL, NULL);
1424             JSValueProtect(context, object_);
1425         }
1426     }
1427
1428     CYSetProperty(context, object_, name, value);
1429 }
1430
1431 + (CYInternal *) get:(id)object {
1432 #ifdef __APPLE__
1433     if (&objc_getAssociatedObject == NULL)
1434         return nil;
1435
1436     @synchronized (object) {
1437         if (CYInternal *internal = objc_getAssociatedObject(object, @selector(cy$internal)))
1438             return internal;
1439     }
1440 #endif
1441
1442     return nil;
1443 }
1444
1445 + (CYInternal *) set:(id)object inContext:(JSContextRef)context {
1446 #ifdef __APPLE__
1447     if (&objc_getAssociatedObject == NULL)
1448         return nil;
1449
1450     @synchronized (object) {
1451         if (CYInternal *internal = objc_getAssociatedObject(object, @selector(cy$internal)))
1452             return internal;
1453
1454         if (&objc_setAssociatedObject == NULL)
1455             return nil;
1456
1457         CYInternal *internal([[[CYInternal alloc] initInContext:context] autorelease]);
1458         objc_setAssociatedObject(object, @selector(cy$internal), internal, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
1459         return internal;
1460     }
1461 #endif
1462
1463     return nil;
1464 }
1465
1466 @end
1467
1468 static JSValueRef CYCastJSValue(JSContextRef context, SEL sel) {
1469     if (sel == NULL)
1470         return CYJSNull(context);
1471     return Selector_privateData::Make(context, sel);
1472 }
1473
1474 static SEL CYCastSEL(JSContextRef context, JSValueRef value) {
1475     if (JSValueIsObjectOfClass(context, value, Selector_privateData::Class_)) {
1476         Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate((JSObjectRef) value)));
1477         return reinterpret_cast<SEL>(internal->value_);
1478     } else {
1479         CYPool pool;
1480         return sel_registerName(CYPoolCString(pool, context, value));
1481     }
1482 }
1483
1484 void *CYObjectiveC_ExecuteStart(JSContextRef context) { CYSadTry {
1485     return (void *) [[NSAutoreleasePool alloc] init];
1486 } CYSadCatch(NULL) }
1487
1488 void CYObjectiveC_ExecuteEnd(JSContextRef context, void *handle) { CYSadTry {
1489     return [(NSAutoreleasePool *) handle release];
1490 } CYSadCatch() }
1491
1492 static void CYObjectiveC_CallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) { CYSadTry {
1493     CYCallFunction(pool, context, cif, function, value, values);
1494 } CYSadCatch() }
1495
1496 static NSBlock *CYCastNSBlock(CYPool &pool, JSContextRef context, JSValueRef value, const sig::Signature *signature) {
1497 #ifdef __APPLE__
1498     if (JSValueIsNull(context, value))
1499         return nil;
1500     JSObjectRef object(CYCastJSObject(context, value));
1501
1502     if (JSValueIsObjectOfClass(context, object, FunctionInstance_))
1503         return reinterpret_cast<Instance *>(JSObjectGetPrivate(object))->value_;
1504
1505     if (JSValueIsObjectOfClass(context, object, Instance::Class_)) {
1506         _assert(reinterpret_cast<Instance *>(JSObjectGetPrivate(object))->value_ == nil);
1507         return nil;
1508     }
1509
1510     _assert(JSObjectIsFunction(context, object));
1511
1512     _assert(signature != NULL);
1513     _assert(signature->count != 0);
1514
1515     sig::Signature modified;
1516     modified.count = signature->count + 1;
1517     modified.elements = new(pool) sig::Element[modified.count];
1518
1519     modified.elements[0] = signature->elements[0];
1520     memcpy(modified.elements + 2, signature->elements + 1, sizeof(sig::Element) * (signature->count - 1));
1521
1522     modified.elements[1].name = NULL;
1523     modified.elements[1].type = new(pool) sig::Object();
1524     modified.elements[1].offset = _not(size_t);
1525
1526     return CYMakeBlock(context, object, modified);
1527 #else
1528     _assert(false);
1529 #endif
1530 }
1531
1532 namespace sig {
1533
1534 void Block::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
1535     // XXX: this function might not handle the idea of a null pool
1536     *reinterpret_cast<id *>(data) = CYCastNSBlock(*pool, context, value, &signature);
1537 }
1538
1539 // XXX: assigning to an indirect id * works for return values, but not for properties and fields
1540 void Object::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
1541     *reinterpret_cast<id *>(data) = CYCastNSObject(pool, context, value);
1542 }
1543
1544 void Meta::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
1545     *reinterpret_cast<id *>(data) = CYCastNSObject(pool, context, value);
1546 }
1547
1548 void Selector::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
1549     *reinterpret_cast<SEL *>(data) = CYCastSEL(context, value);
1550 }
1551
1552 JSValueRef Object::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
1553     NSObject *value(*reinterpret_cast<NSObject **>(data));
1554     if (value == NULL)
1555         return CYJSNull(context);
1556     JSObjectRef object(CYMakeInstance(context, value));
1557
1558     if (initialize) {
1559         Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1560
1561         if ((internal->flags_ & Instance::Uninitialized) != 0) {
1562             internal->flags_ = static_cast<Instance::Flags>(internal->flags_ & ~Instance::Uninitialized);
1563             _assert(internal->value_ == nil);
1564             internal->value_ = value;
1565         }
1566
1567         [value release];
1568     }
1569
1570     return object;
1571 }
1572
1573 JSValueRef Meta::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
1574     if (Class value = *reinterpret_cast<Class *>(data))
1575         return CYMakeInstance(context, value, Instance::Permanent);
1576     return CYJSNull(context);
1577 }
1578
1579 JSValueRef Selector::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
1580     return CYCastJSValue(context, *reinterpret_cast<SEL *>(data));
1581 }
1582
1583 JSValueRef Block::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
1584     return CYCastJSValue(context, *reinterpret_cast<NSObject **>(data));
1585 }
1586
1587 }
1588
1589 static bool CYImplements(id object, Class _class, SEL selector, bool devoid = false) {
1590     if (objc_method *method = class_getInstanceMethod(_class, selector)) {
1591         if (!devoid)
1592             return true;
1593         char type[16];
1594         method_getReturnType(method, type, sizeof(type));
1595         if (type[0] != 'v')
1596             return true;
1597     }
1598
1599     // XXX: possibly use a more "awesome" check?
1600     return false;
1601 }
1602
1603 static JSValueRef MessageAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
1604     JSObjectRef _this(CYCastJSObject(context, values[0]));
1605     return CYCallAsFunction(context, function, _this, count - 2, values + 2);
1606 }
1607
1608 JSObjectRef Message_privateData::Make(JSContextRef context, SEL sel, const char *type, IMP value) {
1609     Message_privateData *internal(new Message_privateData(sel, type, value));
1610     return JSObjectMake(context, Message_privateData::Class_, internal);
1611 }
1612
1613 static IMP CYMakeMessage(JSContextRef context, JSValueRef value, const char *encoding) {
1614     JSObjectRef function(CYCastJSObject(context, value));
1615     CYPool pool;
1616     sig::Signature signature;
1617     sig::Parse(pool, &signature, encoding, &Structor_);
1618     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &MessageAdapter_));
1619     // XXX: see notes in Library.cpp about needing to leak
1620     return reinterpret_cast<IMP>(internal->value_);
1621 }
1622
1623 static bool Messages_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1624     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1625     Class _class(internal->value_);
1626
1627     CYPool pool;
1628     const char *name(CYPoolCString(pool, context, property));
1629
1630     if (SEL sel = sel_getUid(name))
1631         if (class_getInstanceMethod(_class, sel) != NULL)
1632             return true;
1633
1634     return false;
1635 }
1636
1637 static JSValueRef Messages_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1638     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1639     Class _class(internal->value_);
1640
1641     CYPool pool;
1642     const char *name(CYPoolCString(pool, context, property));
1643
1644     if (SEL sel = sel_getUid(name))
1645         if (objc_method *method = class_getInstanceMethod(_class, sel))
1646             return Message_privateData::Make(context, sel, method_getTypeEncoding(method), method_getImplementation(method));
1647
1648     return NULL;
1649 } CYCatch(NULL) }
1650
1651 static bool Messages_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1652     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1653     Class _class(internal->value_);
1654
1655     CYPool pool;
1656     const char *name(CYPoolCString(pool, context, property));
1657     SEL sel(sel_registerName(name));
1658
1659     const char *type;
1660     IMP imp;
1661
1662     if (JSValueIsObjectOfClass(context, value, Message_privateData::Class_)) {
1663         Message_privateData *message(reinterpret_cast<Message_privateData *>(JSObjectGetPrivate((JSObjectRef) value)));
1664         type = sig::Unparse(pool, &message->signature_);
1665         imp = reinterpret_cast<IMP>(message->value_);
1666     } else if (objc_method *method = class_getInstanceMethod(_class, sel)) {
1667         type = method_getTypeEncoding(method);
1668         imp = CYMakeMessage(context, value, type);
1669     } else _assert(false);
1670
1671     objc_method *method(NULL);
1672     unsigned int size;
1673     objc_method **methods(class_copyMethodList(_class, &size));
1674     for (size_t i(0); i != size; ++i)
1675         if (sel_isEqual(method_getName(methods[i]), sel)) {
1676             method = methods[i];
1677             break;
1678         }
1679     free(methods);
1680
1681     if (method != NULL)
1682         method_setImplementation(method, imp);
1683     else
1684         class_addMethod(_class, sel, imp, type);
1685
1686     return true;
1687 } CYCatch(false) }
1688
1689 static void Messages_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1690     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1691     Class _class(internal->value_);
1692
1693     unsigned int size;
1694     objc_method **data(class_copyMethodList(_class, &size));
1695     for (size_t i(0); i != size; ++i)
1696         JSPropertyNameAccumulatorAddName(names, CYJSString(sel_getName(method_getName(data[i]))));
1697     free(data);
1698 }
1699
1700 static bool CYHasImplicitProperties(Class _class) {
1701     // XXX: this is an evil hack to deal with NSProxy; fix elsewhere
1702     if (!CYImplements(_class, object_getClass(_class), @selector(cy$hasImplicitProperties)))
1703         return true;
1704     return [_class cy$hasImplicitProperties];
1705 }
1706
1707 static bool Instance_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1708     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1709     id self(internal->value_);
1710
1711     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1712         return true;
1713
1714     CYPool pool;
1715     NSString *name(CYCastNSString(&pool, context, property));
1716
1717     if (CYInternal *internal = [CYInternal get:self])
1718         if ([internal hasProperty:property inContext:context])
1719             return true;
1720
1721     Class _class(object_getClass(self));
1722
1723     CYPoolTry {
1724         // XXX: this is an evil hack to deal with NSProxy; fix elsewhere
1725         if (CYImplements(self, _class, @selector(cy$hasProperty:)))
1726             if ([self cy$hasProperty:name])
1727                 return true;
1728     } CYPoolCatch(false)
1729
1730     const char *string(CYPoolCString(pool, context, name));
1731
1732     if (class_getProperty(_class, string) != NULL)
1733         return true;
1734
1735     if (CYHasImplicitProperties(_class))
1736         if (SEL sel = sel_getUid(string))
1737             if (CYImplements(self, _class, sel, true))
1738                 return true;
1739
1740     return false;
1741 }
1742
1743 static JSValueRef Instance_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1744     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1745     id self(internal->value_);
1746
1747     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1748         return Internal::Make(context, self, context, object);
1749
1750     CYPool pool;
1751     NSString *name(CYCastNSString(&pool, context, property));
1752
1753     if (CYInternal *internal = [CYInternal get:self])
1754         if (JSValueRef value = [internal getProperty:property inContext:context])
1755             return value;
1756
1757     CYPoolTry {
1758         if (JSValueRef value = [self cy$getProperty:name inContext:context])
1759             return value;
1760     } CYPoolCatch(NULL)
1761
1762     const char *string(CYPoolCString(pool, context, name));
1763     Class _class(object_getClass(self));
1764
1765     if (objc_property_t property = class_getProperty(_class, string)) {
1766         PropertyAttributes attributes(property);
1767         SEL sel(sel_registerName(attributes.Getter()));
1768         return CYSendMessage(pool, context, self, NULL, sel, 0, NULL, false);
1769     }
1770
1771     if (CYHasImplicitProperties(_class))
1772         if (SEL sel = sel_getUid(string))
1773             if (CYImplements(self, _class, sel, true))
1774                 return CYSendMessage(pool, context, self, NULL, sel, 0, NULL, false);
1775
1776     return NULL;
1777 } CYCatch(NULL) }
1778
1779 static bool Instance_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1780     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1781     id self(internal->value_);
1782
1783     CYPool pool;
1784
1785     NSString *name(CYCastNSString(&pool, context, property));
1786     NSObject *data(CYCastNSObject(&pool, context, value));
1787
1788     CYPoolTry {
1789         if ([self cy$setProperty:name to:data])
1790             return true;
1791     } CYPoolCatch(false)
1792
1793     const char *string(CYPoolCString(pool, context, name));
1794     Class _class(object_getClass(self));
1795
1796     if (objc_property_t property = class_getProperty(_class, string)) {
1797         PropertyAttributes attributes(property);
1798         if (const char *setter = attributes.Setter()) {
1799             SEL sel(sel_registerName(setter));
1800             JSValueRef arguments[1] = {value};
1801             CYSendMessage(pool, context, self, NULL, sel, 1, arguments, false);
1802             return true;
1803         }
1804     }
1805
1806     size_t length(strlen(string));
1807
1808     char set[length + 5];
1809
1810     set[0] = 's';
1811     set[1] = 'e';
1812     set[2] = 't';
1813
1814     if (string[0] != '\0') {
1815         set[3] = toupper(string[0]);
1816         memcpy(set + 4, string + 1, length - 1);
1817     }
1818
1819     set[length + 3] = ':';
1820     set[length + 4] = '\0';
1821
1822     if (SEL sel = sel_getUid(set))
1823         if (CYImplements(self, _class, sel)) {
1824             JSValueRef arguments[1] = {value};
1825             CYSendMessage(pool, context, self, NULL, sel, 1, arguments, false);
1826             return true;
1827         }
1828
1829     if (CYInternal *internal = [CYInternal set:self inContext:context]) {
1830         [internal setProperty:property toValue:value inContext:context];
1831         return true;
1832     }
1833
1834     return false;
1835 } CYCatch(false) }
1836
1837 static bool Instance_deleteProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1838     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1839     id self(internal->value_);
1840
1841     CYPoolTry {
1842         NSString *name(CYCastNSString(NULL, context, property));
1843         return [self cy$deleteProperty:name];
1844     } CYPoolCatch(false)
1845 } CYCatch(false) return /*XXX*/ false; }
1846
1847 static void Instance_getPropertyNames_message(JSPropertyNameAccumulatorRef names, objc_method *method) {
1848     const char *name(sel_getName(method_getName(method)));
1849     if (strchr(name, ':') != NULL)
1850         return;
1851
1852     const char *type(method_getTypeEncoding(method));
1853     if (type == NULL || *type == '\0' || *type == 'v')
1854         return;
1855
1856     JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1857 }
1858
1859 static void Instance_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1860     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1861     id self(internal->value_);
1862
1863     CYPool pool;
1864     Class _class(object_getClass(self));
1865
1866     {
1867         unsigned int size;
1868         objc_property_t *data(class_copyPropertyList(_class, &size));
1869         for (size_t i(0); i != size; ++i)
1870             JSPropertyNameAccumulatorAddName(names, CYJSString(property_getName(data[i])));
1871         free(data);
1872     }
1873
1874     if (CYHasImplicitProperties(_class))
1875         for (Class current(_class); current != nil; current = class_getSuperclass(current)) {
1876             unsigned int size;
1877             objc_method **data(class_copyMethodList(current, &size));
1878             for (size_t i(0); i != size; ++i)
1879                 Instance_getPropertyNames_message(names, data[i]);
1880             free(data);
1881         }
1882
1883     CYPoolTry {
1884         // XXX: this is an evil hack to deal with NSProxy; fix elsewhere
1885         if (CYImplements(self, _class, @selector(cy$getPropertyNames:inContext:)))
1886             [self cy$getPropertyNames:names inContext:context];
1887     } CYPoolCatch()
1888 }
1889
1890 static JSObjectRef Instance_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1891     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1892     JSObjectRef value(CYMakeInstance(context, [internal->value_ alloc], Instance::Uninitialized));
1893     return value;
1894 } CYCatch(NULL) }
1895
1896 static const char *CYBlockEncoding(NSBlock *self) {
1897     BlockLiteral *literal(reinterpret_cast<BlockLiteral *>(self));
1898     if ((literal->flags & BLOCK_HAS_SIGNATURE) == 0)
1899         return NULL;
1900     uint8_t *descriptor(reinterpret_cast<uint8_t *>(literal->descriptor));
1901     descriptor += sizeof(BlockDescriptor1);
1902     if ((literal->flags & BLOCK_HAS_COPY_DISPOSE) != 0)
1903         descriptor += sizeof(BlockDescriptor2);
1904     BlockDescriptor3 *descriptor3(reinterpret_cast<BlockDescriptor3 *>(descriptor));
1905     return descriptor3->signature;
1906 }
1907
1908 static bool CYBlockSignature(CYPool &pool, NSBlock *self, sig::Signature &signature) {
1909     const char *encoding(CYBlockEncoding(self));
1910     if (encoding == NULL)
1911         return false;
1912
1913     sig::Parse(pool, &signature, encoding, &Structor_);
1914     _assert(signature.count >= 2);
1915
1916     _assert(dynamic_cast<sig::Object *>(signature.elements[1].type) != NULL);
1917     signature.elements[1] = signature.elements[0];
1918
1919     ++signature.elements;
1920     --signature.count;
1921
1922     return true;
1923 }
1924
1925 static JSValueRef FunctionInstance_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1926     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1927     id self(internal->value_);
1928
1929     if (const char *encoding = CYBlockEncoding(self)) {
1930         CYPool pool;
1931
1932         void *setup[1];
1933         setup[0] = &self;
1934
1935         sig::Signature signature;
1936         sig::Parse(pool, &signature, encoding, &Structor_);
1937
1938         ffi_cif cif;
1939         sig::sig_ffi_cif(pool, 0, signature, &cif);
1940
1941         BlockLiteral *literal(reinterpret_cast<BlockLiteral *>(self));
1942         void (*function)() = reinterpret_cast<void (*)()>(literal->invoke);
1943         return CYCallFunction(pool, context, 1, setup, count, arguments, false, false, signature, &cif, function);
1944     }
1945
1946     if (count != 0)
1947         CYThrow("NSBlock without signature field passed arguments");
1948
1949     CYPoolTry {
1950         [self invoke];
1951     } CYPoolCatch(NULL);
1952
1953     return NULL;
1954 } CYCatch(NULL) }
1955
1956 static bool Instance_hasInstance(JSContextRef context, JSObjectRef constructor, JSValueRef instance, JSValueRef *exception) { CYTry {
1957     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate((JSObjectRef) constructor)));
1958     Class _class(internal->value_);
1959     if (!CYIsClass(_class))
1960         return false;
1961
1962     if (CYJSValueIsNSObject(context, instance)) {
1963         Instance *linternal(reinterpret_cast<Instance *>(JSObjectGetPrivate((JSObjectRef) instance)));
1964         // XXX: this isn't always safe
1965         return [linternal->value_ isKindOfClass:_class];
1966     }
1967
1968     return false;
1969 } CYCatch(false) }
1970
1971 static JSValueRef Instance_box_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1972     if (count == 0)
1973         throw CYJSError(context, "incorrect number of arguments to Instance");
1974     CYPool pool;
1975     id value(CYCastNSObject(&pool, context, arguments[0]));
1976     if (value == nil)
1977         value = [NSNull null];
1978     return CYCastJSValue(context, [value cy$box]);
1979 } CYCatch(NULL) }
1980
1981 static bool Internal_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1982     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
1983     CYPool pool;
1984
1985     id self(internal->value_);
1986     const char *name(CYPoolCString(pool, context, property));
1987
1988     if (object_getInstanceVariable(self, name, NULL) != NULL)
1989         return true;
1990
1991     return false;
1992 }
1993
1994 static void CYBitField(unsigned &length, unsigned &shift, id self, Ivar ivar, const char *encoding, unsigned offset) {
1995     length = CYCastDouble(encoding + 1);
1996     shift = 0;
1997
1998     unsigned int size;
1999     objc_ivar **ivars(class_copyIvarList(object_getClass(self), &size));
2000     for (size_t i(0); i != size; ++i)
2001         if (ivars[i] == ivar)
2002             break;
2003         else if (ivar_getOffset(ivars[i]) == offset) {
2004             const char *encoding(ivar_getTypeEncoding(ivars[i]));
2005             _assert(encoding != NULL);
2006             _assert(encoding[0] == 'b');
2007             shift += CYCastDouble(encoding + 1);
2008         }
2009     free(ivars);
2010 }
2011
2012 static JSValueRef Internal_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2013     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
2014     CYPool pool;
2015
2016     id self(internal->value_);
2017     const char *name(CYPoolCString(pool, context, property));
2018
2019     if (objc_ivar *ivar = object_getInstanceVariable(self, name, NULL)) {
2020         ptrdiff_t offset(ivar_getOffset(ivar));
2021         void *data(reinterpret_cast<uint8_t *>(self) + offset);
2022
2023         const char *encoding(ivar_getTypeEncoding(ivar));
2024         _assert(encoding != NULL);
2025         _assert(encoding[0] != '\0');
2026         if (encoding[0] == 'b') {
2027             unsigned length, shift;
2028             CYBitField(length, shift, self, ivar, encoding, offset);
2029             _assert(shift + length <= sizeof(uintptr_t) * 8);
2030             uintptr_t &field(*reinterpret_cast<uintptr_t *>(data));
2031             uintptr_t mask((1 << length) - 1);
2032             return CYCastJSValue(context, (field >> shift) & mask);
2033         } else {
2034 #if defined(__APPLE__) && defined(__LP64__)
2035             // XXX: maybe do even more verifications here
2036             if (strcmp(name, "isa") == 0)
2037                 return CYCastJSValue(context, object_getClass(self));
2038 #endif
2039
2040             auto type(new(pool) Type_privateData(encoding));
2041             return type->type_->FromFFI(context, type->GetFFI(), data);
2042         }
2043     }
2044
2045     return NULL;
2046 } CYCatch(NULL) }
2047
2048 static bool Internal_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
2049     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
2050     CYPool pool;
2051
2052     id self(internal->value_);
2053     const char *name(CYPoolCString(pool, context, property));
2054
2055     if (objc_ivar *ivar = object_getInstanceVariable(self, name, NULL)) {
2056         ptrdiff_t offset(ivar_getOffset(ivar));
2057         void *data(reinterpret_cast<uint8_t *>(self) + offset);
2058
2059         const char *encoding(ivar_getTypeEncoding(ivar));
2060         _assert(encoding != NULL);
2061         if (encoding[0] == 'b') {
2062             unsigned length, shift;
2063             CYBitField(length, shift, self, ivar, encoding, offset);
2064             _assert(shift + length <= sizeof(uintptr_t) * 8);
2065             uintptr_t &field(*reinterpret_cast<uintptr_t *>(data));
2066             uintptr_t mask((1 << length) - 1);
2067             field = field & ~(mask << shift) | (uintptr_t(CYCastDouble(context, value)) & mask) << shift;
2068         } else {
2069             auto type(new(pool) Type_privateData(ivar_getTypeEncoding(ivar)));
2070             type->type_->PoolFFI(&pool, context, type->GetFFI(), reinterpret_cast<uint8_t *>(self) + ivar_getOffset(ivar), value);
2071             return true;
2072         }
2073     }
2074
2075     return false;
2076 } CYCatch(false) }
2077
2078 static void Internal_getPropertyNames_(Class _class, JSPropertyNameAccumulatorRef names) {
2079     if (Class super = class_getSuperclass(_class))
2080         Internal_getPropertyNames_(super, names);
2081
2082     unsigned int size;
2083     objc_ivar **data(class_copyIvarList(_class, &size));
2084     for (size_t i(0); i != size; ++i)
2085         JSPropertyNameAccumulatorAddName(names, CYJSString(ivar_getName(data[i])));
2086     free(data);
2087 }
2088
2089 static void Internal_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2090     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
2091     CYPool pool;
2092
2093     id self(internal->value_);
2094     Class _class(object_getClass(self));
2095
2096     Internal_getPropertyNames_(_class, names);
2097 }
2098
2099 static JSValueRef Internal_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2100     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
2101     return internal->owner_;
2102 } CYCatch(NULL) }
2103
2104 static bool ObjectiveC_Classes_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
2105     CYPool pool;
2106     return objc_getClass(CYPoolCString(pool, context, property)) != Nil;
2107 }
2108
2109 static JSValueRef ObjectiveC_Classes_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2110     CYPool pool;
2111     NSString *name(CYCastNSString(&pool, context, property));
2112     if (Class _class = NSClassFromString(name))
2113         return CYMakeInstance(context, _class, Instance::Permanent);
2114     return NULL;
2115 } CYCatch(NULL) }
2116
2117 static Class *CYCopyClassList(size_t &size) {
2118     size = objc_getClassList(NULL, 0);
2119     Class *data(reinterpret_cast<Class *>(malloc(sizeof(Class) * size)));
2120
2121     for (;;) {
2122         size_t writ(objc_getClassList(data, size));
2123         if (writ <= size) {
2124             size = writ;
2125             return data;
2126         }
2127
2128         Class *copy(reinterpret_cast<Class *>(realloc(data, sizeof(Class) * writ)));
2129         if (copy == NULL) {
2130             free(data);
2131             return NULL;
2132         }
2133
2134         data = copy;
2135         size = writ;
2136     }
2137 }
2138
2139 static void ObjectiveC_Classes_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2140     size_t size;
2141     if (Class *data = CYCopyClassList(size)) {
2142         for (size_t i(0); i != size; ++i)
2143             JSPropertyNameAccumulatorAddName(names, CYJSString(class_getName(data[i])));
2144         free(data);
2145     }
2146 }
2147
2148 #ifdef __APPLE__
2149 static JSValueRef ObjectiveC_Image_Classes_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2150     const char *internal(reinterpret_cast<const char *>(JSObjectGetPrivate(object)));
2151
2152     CYPool pool;
2153     const char *name(CYPoolCString(pool, context, property));
2154     unsigned int size;
2155     const char **data(objc_copyClassNamesForImage(internal, &size));
2156     JSValueRef value;
2157     for (size_t i(0); i != size; ++i)
2158         if (strcmp(name, data[i]) == 0) {
2159             if (Class _class = objc_getClass(name)) {
2160                 value = CYMakeInstance(context, _class, Instance::Permanent);
2161                 goto free;
2162             } else
2163                 break;
2164         }
2165     value = NULL;
2166   free:
2167     free(data);
2168     return value;
2169 } CYCatch(NULL) }
2170
2171 static void ObjectiveC_Image_Classes_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2172     const char *internal(reinterpret_cast<const char *>(JSObjectGetPrivate(object)));
2173     unsigned int size;
2174     const char **data(objc_copyClassNamesForImage(internal, &size));
2175     for (size_t i(0); i != size; ++i)
2176         JSPropertyNameAccumulatorAddName(names, CYJSString(data[i]));
2177     free(data);
2178 }
2179
2180 static JSValueRef ObjectiveC_Images_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2181     CYPool pool;
2182     CYUTF8String name(CYPoolUTF8String(pool, context, property));
2183
2184     unsigned int size;
2185     const char **data(objc_copyImageNames(&size));
2186     pool.atexit(free, data);
2187
2188     for (size_t i(0); i != size; ++i)
2189         if (name == data[i]) {
2190             JSObjectRef value(JSObjectMake(context, NULL, NULL));
2191             CYSetProperty(context, value, CYJSString("classes"), JSObjectMake(context, ObjectiveC_Image_Classes_, const_cast<char *>(data[i])));
2192             return value;
2193         }
2194
2195     return NULL;
2196 } CYCatch(NULL) }
2197
2198 static void ObjectiveC_Images_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2199     unsigned int size;
2200     const char **data(objc_copyImageNames(&size));
2201     for (size_t i(0); i != size; ++i)
2202         JSPropertyNameAccumulatorAddName(names, CYJSString(data[i]));
2203     free(data);
2204 }
2205 #endif
2206
2207 static JSValueRef ObjectiveC_Protocols_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2208     CYPool pool;
2209     const char *name(CYPoolCString(pool, context, property));
2210     if (Protocol *protocol = objc_getProtocol(name))
2211         return CYMakeInstance(context, protocol, Instance::Permanent);
2212     return NULL;
2213 } CYCatch(NULL) }
2214
2215 static void ObjectiveC_Protocols_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2216     unsigned int size;
2217     Protocol **data(objc_copyProtocolList(&size));
2218     for (size_t i(0); i != size; ++i)
2219         JSPropertyNameAccumulatorAddName(names, CYJSString(protocol_getName(data[i])));
2220     free(data);
2221 }
2222
2223 static JSValueRef ObjectiveC_Constants_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2224     CYPool pool;
2225     CYUTF8String name(CYPoolUTF8String(pool, context, property));
2226     if (name == "nil")
2227         return CYJSNull(context);
2228     return NULL;
2229 } CYCatch(NULL) }
2230
2231 static void ObjectiveC_Constants_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2232     JSPropertyNameAccumulatorAddName(names, CYJSString("nil"));
2233 }
2234
2235 #ifdef __APPLE__
2236 static kern_return_t CYReadMemory(task_t task, vm_address_t address, vm_size_t size, void **data) {
2237     *data = reinterpret_cast<void *>(address);
2238     return KERN_SUCCESS;
2239 }
2240
2241 struct CYChoice {
2242     std::set<Class> query_;
2243     JSContextRef context_;
2244     JSObjectRef results_;
2245 };
2246
2247 struct CYObjectStruct {
2248     Class isa_;
2249 };
2250
2251 static void choose_(task_t task, void *baton, unsigned type, vm_range_t *ranges, unsigned count) {
2252     CYChoice *choice(reinterpret_cast<CYChoice *>(baton));
2253     JSContextRef context(choice->context_);
2254
2255     for (unsigned i(0); i != count; ++i) {
2256         vm_range_t &range(ranges[i]);
2257         void *data(reinterpret_cast<void *>(range.address));
2258         size_t size(range.size);
2259
2260         if (size < sizeof(CYObjectStruct))
2261             continue;
2262
2263         uintptr_t *pointers(reinterpret_cast<uintptr_t *>(data));
2264 #if defined(__APPLE__) && defined(__LP64__)
2265         Class isa(reinterpret_cast<Class>(pointers[0] & 0x1fffffff8));
2266 #else
2267         Class isa(reinterpret_cast<Class>(pointers[0]));
2268 #endif
2269
2270         std::set<Class>::const_iterator result(choice->query_.find(isa));
2271         if (result == choice->query_.end())
2272             continue;
2273
2274         size_t needed(class_getInstanceSize(*result));
2275         // XXX: if (size < needed)
2276
2277         size_t boundary(496);
2278 #ifdef __LP64__
2279         boundary *= 2;
2280 #endif
2281         if (needed <= boundary && (needed + 15) / 16 * 16 != size || needed > boundary && (needed + 511) / 512 * 512 != size)
2282             continue;
2283         CYArrayPush(context, choice->results_, CYCastJSValue(context, reinterpret_cast<id>(data)));
2284     }
2285 }
2286
2287 static JSValueRef choose(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2288     if (count != 1)
2289         throw CYJSError(context, "choose() takes a class argument");
2290
2291     CYGarbageCollect(context);
2292
2293     CYPool pool;
2294     id _class(CYCastNSObject(&pool, context, arguments[0]));
2295
2296     vm_address_t *zones(NULL);
2297     unsigned size(0);
2298     kern_return_t error(malloc_get_all_zones(0, &CYReadMemory, &zones, &size));
2299     _assert(error == KERN_SUCCESS);
2300
2301     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
2302     JSObjectRef results(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2303
2304     CYChoice choice;
2305     choice.context_ = context;
2306     choice.results_ = results;
2307
2308     size_t number;
2309     Class *classes(CYCopyClassList(number));
2310     _assert(classes != NULL);
2311
2312     for (size_t i(0); i != number; ++i)
2313         for (Class current(classes[i]); current != Nil; current = class_getSuperclass(current))
2314             if (current == _class) {
2315                 choice.query_.insert(classes[i]);
2316                 break;
2317             }
2318
2319     free(classes);
2320
2321     for (unsigned i(0); i != size; ++i) {
2322         const malloc_zone_t *zone(reinterpret_cast<const malloc_zone_t *>(zones[i]));
2323         if (zone == NULL || zone->introspect == NULL)
2324             continue;
2325
2326         zone->introspect->enumerator(mach_task_self(), &choice, MALLOC_PTR_IN_USE_RANGE_TYPE, zones[i], &CYReadMemory, &choose_);
2327     }
2328
2329     return results;
2330 } CYCatch(NULL) }
2331 #endif
2332
2333 #ifdef __APPLE__
2334 #if defined(__i386__) || defined(__x86_64__)
2335 #define OBJC_MAX_STRUCT_BY_VALUE 8
2336 static int struct_forward_array[] = {
2337     0, 0, 0, 1, 0, 1, 1, 1, 0 };
2338 #elif defined(__arm__)
2339 #define OBJC_MAX_STRUCT_BY_VALUE 1
2340 static int struct_forward_array[] = {
2341     0, 0 };
2342 #elif defined(__arm64__)
2343 #define CY_NO_STRET
2344 #else
2345 #error missing objc-runtime-info
2346 #endif
2347
2348 #ifndef CY_NO_STRET
2349 static bool stret(ffi_type *ffi_type) {
2350     return ffi_type->type == FFI_TYPE_STRUCT && (
2351         ffi_type->size > OBJC_MAX_STRUCT_BY_VALUE ||
2352         struct_forward_array[ffi_type->size] != 0
2353     );
2354 }
2355 #endif
2356 #else
2357 #define CY_NO_STRET
2358 #endif
2359
2360 JSValueRef CYSendMessage(CYPool &pool, JSContextRef context, id self, Class _class, SEL _cmd, size_t count, const JSValueRef arguments[], bool initialize) {
2361     const char *type;
2362
2363     if (_class == NULL)
2364         _class = object_getClass(self);
2365
2366     IMP imp;
2367
2368     if (objc_method *method = class_getInstanceMethod(_class, _cmd)) {
2369         imp = method_getImplementation(method);
2370         type = method_getTypeEncoding(method);
2371     } else {
2372         imp = NULL;
2373
2374         CYPoolTry {
2375             if (NSMethodSignature *method = [self methodSignatureForSelector:_cmd])
2376                 type = CYPoolCString(pool, context, [method _typeString]);
2377             else
2378                 type = NULL;
2379         } CYPoolCatch(NULL)
2380
2381         if (type == NULL)
2382             throw CYJSError(context, "unrecognized selector %s sent to object %p", sel_getName(_cmd), self);
2383     }
2384
2385     void *setup[2];
2386     setup[0] = &self;
2387     setup[1] = &_cmd;
2388
2389     sig::Signature signature;
2390     sig::Parse(pool, &signature, type, &Structor_);
2391
2392     ffi_cif cif;
2393     sig::sig_ffi_cif(pool, 0, signature, &cif);
2394
2395     if (imp == NULL) {
2396 #ifndef CY_NO_STRET
2397         if (stret(cif.rtype))
2398             imp = class_getMethodImplementation_stret(_class, _cmd);
2399         else
2400 #endif
2401             imp = class_getMethodImplementation(_class, _cmd);
2402     }
2403
2404     void (*function)() = reinterpret_cast<void (*)()>(imp);
2405     return CYCallFunction(pool, context, 2, setup, count, arguments, initialize, true, signature, &cif, function);
2406 }
2407
2408 static JSValueRef $objc_msgSend(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
2409     if (count < 2)
2410         throw CYJSError(context, "too few arguments to objc_msgSend");
2411
2412     CYPool pool;
2413
2414     bool uninitialized;
2415
2416     id self;
2417     SEL _cmd;
2418     Class _class;
2419
2420     if (JSValueIsObjectOfClass(context, arguments[0], cy::Super::Class_)) {
2421         cy::Super *internal(reinterpret_cast<cy::Super *>(JSObjectGetPrivate((JSObjectRef) arguments[0])));
2422         self = internal->value_;
2423         _class = internal->class_;;
2424         uninitialized = false;
2425     } else if (CYJSValueIsNSObject(context, arguments[0])) {
2426         Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate((JSObjectRef) arguments[0])));
2427         self = internal->value_;
2428         _class = nil;
2429         uninitialized = internal->IsUninitialized();
2430         if (uninitialized)
2431             internal->value_ = nil;
2432     } else {
2433         self = CYCastNSObject(&pool, context, arguments[0]);
2434         _class = nil;
2435         uninitialized = false;
2436     }
2437
2438     if (self == nil)
2439         return CYJSNull(context);
2440
2441     _cmd = CYCastSEL(context, arguments[1]);
2442
2443     return CYSendMessage(pool, context, self, _class, _cmd, count - 2, arguments + 2, uninitialized);
2444 }
2445
2446 static JSValueRef $objc_msgSend(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2447     return $objc_msgSend(context, object, _this, count, arguments);
2448 } CYCatch(NULL) }
2449
2450 static JSValueRef Selector_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2451     JSValueRef setup[count + 2];
2452     setup[0] = _this;
2453     setup[1] = object;
2454     memcpy(setup + 2, arguments, sizeof(JSValueRef) * count);
2455     return $objc_msgSend(context, NULL, NULL, count + 2, setup);
2456 } CYCatch(NULL) }
2457
2458 static JSValueRef Message_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2459     CYPool pool;
2460     Message_privateData *internal(reinterpret_cast<Message_privateData *>(JSObjectGetPrivate(object)));
2461
2462     // XXX: handle Instance::Uninitialized?
2463     id self(CYCastNSObject(&pool, context, _this));
2464
2465     void *setup[2];
2466     setup[0] = &self;
2467     setup[1] = &internal->sel_;
2468
2469     return CYCallFunction(pool, context, 2, setup, count, arguments, false, true, internal->signature_, &internal->cif_, internal->value_);
2470 } CYCatch(NULL) }
2471
2472 static JSObjectRef Super_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2473     if (count != 2)
2474         throw CYJSError(context, "incorrect number of arguments to objc_super constructor");
2475     CYPool pool;
2476     id self(CYCastNSObject(&pool, context, arguments[0]));
2477     Class _class(CYCastClass(pool, context, arguments[1]));
2478     return cy::Super::Make(context, self, _class);
2479 } CYCatch(NULL) }
2480
2481 static JSObjectRef Selector_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2482     if (count != 1)
2483         throw CYJSError(context, "incorrect number of arguments to Selector constructor");
2484     CYPool pool;
2485     const char *name(CYPoolCString(pool, context, arguments[0]));
2486     return Selector_privateData::Make(context, sel_registerName(name));
2487 } CYCatch(NULL) }
2488
2489 static JSObjectRef Instance_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2490     if (count != 1)
2491         throw CYJSError(context, "incorrect number of arguments to Instance constructor");
2492     return CYMakeInstance(context, CYCastPointer<id>(context, arguments[0]));
2493 } CYCatch(NULL) }
2494
2495 static JSValueRef Selector_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2496     return CYMakeType(context, sig::Selector());
2497 } CYCatch(NULL) }
2498
2499 static JSValueRef Instance_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2500     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2501     id self(internal->value_);
2502     if (CYIsClass(self))
2503         return CYMakeType(context, sig::Meta());
2504     return CYMakeType(context, sig::Object(class_getName(object_getClass(self))));
2505 } CYCatch(NULL) }
2506
2507 static JSValueRef FunctionInstance_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2508     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2509     CYPool pool;
2510     sig::Block type;
2511     if (!CYBlockSignature(pool, internal->value_, type.signature))
2512         return CYJSNull(context);
2513     return CYMakeType(context, type);
2514 } CYCatch(NULL) }
2515
2516 static JSValueRef Instance_getProperty_constructor(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2517     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2518     return CYMakeInstance(context, object_getClass(internal->value_), Instance::Permanent);
2519 } CYCatch(NULL) }
2520
2521 static JSValueRef Instance_getProperty_prototype(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2522     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2523     id self(internal->value_);
2524     if (!CYIsClass(self))
2525         return CYJSUndefined(context);
2526     return CYGetClassPrototype(context, self);
2527 } CYCatch(NULL) }
2528
2529 static JSValueRef Instance_getProperty_messages(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2530     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2531     id self(internal->value_);
2532     if (!CYIsClass(self))
2533         return CYJSUndefined(context);
2534     return Messages::Make(context, (Class) self);
2535 } CYCatch(NULL) }
2536
2537 static JSValueRef Instance_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2538     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
2539
2540     if (!CYJSValueIsNSObject(context, _this))
2541         return NULL;
2542
2543     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2544     return CYCastJSValue(context, CYJSString(context, CYCastNSCYON(internal->value_, false, objects)));
2545 } CYCatch(NULL) }
2546
2547 static JSValueRef Instance_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2548     if (!CYJSValueIsNSObject(context, _this))
2549         return NULL;
2550
2551     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2552     id value(internal->value_);
2553
2554     CYPoolTry {
2555         NSString *key;
2556         if (count == 0)
2557             key = nil;
2558         else
2559             key = CYCastNSString(NULL, context, CYJSString(context, arguments[0]));
2560
2561         if (!CYImplements(value, object_getClass(value), @selector(cy$toJSON:inContext:)))
2562             return CYJSUndefined(context);
2563         else if (JSValueRef json = [value cy$toJSON:key inContext:context])
2564             return json;
2565         else
2566             return CYCastJSValue(context, CYJSString(context, [value description]));
2567     } CYPoolCatch(NULL)
2568 } CYCatch(NULL) return /*XXX*/ NULL; }
2569
2570 static JSValueRef Instance_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2571     if (!CYJSValueIsNSObject(context, _this))
2572         return NULL;
2573
2574     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2575     id value(internal->value_);
2576     _assert(value != nil);
2577
2578     if (![value respondsToSelector:@selector(cy$valueOfInContext:)])
2579         return _this;
2580
2581     if (JSValueRef result = [value cy$valueOfInContext:context])
2582         return result;
2583
2584     return _this;
2585 } CYCatch(NULL) return /*XXX*/ NULL; }
2586
2587 static JSValueRef Instance_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2588     if (!CYJSValueIsNSObject(context, _this))
2589         return NULL;
2590
2591     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2592     // XXX: but... but... THIS ISN'T A POINTER! :(
2593     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
2594 } CYCatch(NULL) return /*XXX*/ NULL; }
2595
2596 static JSValueRef Instance_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2597     if (!CYJSValueIsNSObject(context, _this))
2598         return NULL;
2599
2600     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2601     id value(internal->value_);
2602
2603     CYPoolTry {
2604         // XXX: this seems like a stupid implementation; what if it crashes? why not use the CYONifier backend?
2605         return CYCastJSValue(context, CYJSString(context, [value description]));
2606     } CYPoolCatch(NULL)
2607 } CYCatch(NULL) return /*XXX*/ NULL; }
2608
2609 static JSValueRef Class_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2610     if (!CYJSValueIsNSObject(context, _this))
2611         return NULL;
2612
2613     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2614     id value(internal->value_);
2615
2616     if (!CYIsClass(value))
2617         CYThrow("non-Class object cannot be used as Type");
2618
2619     sig::Object type(class_getName(value));
2620     return CYMakeType(context, type);
2621 } CYCatch(NULL) return /*XXX*/ NULL; }
2622
2623 static JSValueRef Selector_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2624     Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
2625     return CYCastJSValue(context, sel_getName(internal->value_));
2626 } CYCatch(NULL) }
2627
2628 static JSValueRef Selector_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
2629     return Selector_callAsFunction_toString(context, object, _this, count, arguments, exception);
2630 }
2631
2632 static JSValueRef Selector_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2633     Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
2634     const char *name(sel_getName(internal->value_));
2635
2636     CYPoolTry {
2637         NSString *string([NSString stringWithFormat:@"@selector(%s)", name]);
2638         return CYCastJSValue(context, CYJSString(context, string));
2639     } CYPoolCatch(NULL)
2640 } CYCatch(NULL) return /*XXX*/ NULL; }
2641
2642 static JSValueRef Selector_callAsFunction_type(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2643     if (count != 1)
2644         throw CYJSError(context, "incorrect number of arguments to Selector.type");
2645
2646     CYPool pool;
2647     Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
2648     SEL sel(internal->value_);
2649
2650     Class _class(_require(CYCastClass(pool, context, arguments[0])));
2651     objc_method *method(_require(class_getInstanceMethod(_class, sel)));
2652     const char *encoding(method_getTypeEncoding(method));
2653
2654     sig::Function type(false);
2655     sig::Parse(pool, &type.signature, encoding, &Structor_);
2656     return CYMakeType(context, type);
2657 } CYCatch(NULL) }
2658
2659 static JSStaticValue Selector_staticValues[2] = {
2660     {"$cyt", &Selector_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2661     {NULL, NULL, NULL, 0}
2662 };
2663
2664 static JSStaticValue Instance_staticValues[5] = {
2665     {"$cyt", &Instance_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2666     // XXX: this is sadly duplicated in FunctionInstance_staticValues
2667     {"constructor", &Instance_getProperty_constructor, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2668     {"messages", &Instance_getProperty_messages, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2669     {"prototype", &Instance_getProperty_prototype, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2670     {NULL, NULL, NULL, 0}
2671 };
2672
2673 static JSStaticValue FunctionInstance_staticValues[5] = {
2674     {"$cyt", &FunctionInstance_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2675     // XXX: this is sadly a duplicate of Instance_staticValues
2676     {"constructor", &Instance_getProperty_constructor, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2677     {"messages", &Instance_getProperty_messages, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2678     {"prototype", &Instance_getProperty_prototype, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2679     {NULL, NULL, NULL, 0}
2680 };
2681
2682 static JSStaticFunction Instance_staticFunctions[6] = {
2683     {"toCYON", &Instance_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2684     {"toJSON", &Instance_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2685     {"valueOf", &Instance_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2686     {"toPointer", &Instance_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2687     {"toString", &Instance_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2688     {NULL, NULL, 0}
2689 };
2690
2691 static JSStaticFunction Class_staticFunctions[2] = {
2692     {"pointerTo", &Class_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2693     {NULL, NULL, 0}
2694 };
2695
2696 static JSStaticFunction Internal_staticFunctions[2] = {
2697     {"$cya", &Internal_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2698     {NULL, NULL, 0}
2699 };
2700
2701 static JSStaticFunction Selector_staticFunctions[5] = {
2702     {"toCYON", &Selector_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2703     {"toJSON", &Selector_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2704     {"toString", &Selector_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2705     {"type", &Selector_callAsFunction_type, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2706     {NULL, NULL, 0}
2707 };
2708
2709 #ifdef __APPLE__
2710 JSValueRef NSCFType$cy$toJSON$inContext$(id self, SEL sel, JSValueRef key, JSContextRef context) { CYObjectiveTry_ {
2711     return CYCastJSValue(context, [(NSString *) CFCopyDescription((CFTypeRef) self) autorelease]);
2712 } CYObjectiveCatch }
2713 #endif
2714
2715 void CYObjectiveC_Initialize() { /*XXX*/ JSContextRef context(NULL); CYPoolTry {
2716     NSArray_ = objc_getClass("NSArray");
2717     NSBlock_ = objc_getClass("NSBlock");
2718     NSDictionary_ = objc_getClass("NSDictionary");
2719     NSNumber_ = objc_getClass("NSNumber");
2720     NSString_ = objc_getClass("NSString");
2721     Object_ = objc_getClass("Object");
2722
2723 #ifdef __APPLE__
2724     __NSMallocBlock__ = objc_getClass("__NSMallocBlock__");
2725
2726     // XXX: apparently, iOS now has both of these
2727     NSCFBoolean_ = objc_getClass("__NSCFBoolean");
2728     if (NSCFBoolean_ == nil)
2729         NSCFBoolean_ = objc_getClass("NSCFBoolean");
2730
2731     NSCFType_ = objc_getClass("NSCFType");
2732
2733     NSZombie_ = objc_getClass("_NSZombie_");
2734 #else
2735     NSBoolNumber_ = objc_getClass("NSBoolNumber");
2736     NSZombie_ = objc_getClass("NSZombie");
2737 #endif
2738
2739     JSClassDefinition definition;
2740
2741     definition = kJSClassDefinitionEmpty;
2742     definition.className = "Instance";
2743     definition.staticValues = Instance_staticValues;
2744     definition.staticFunctions = Instance_staticFunctions;
2745     definition.hasProperty = &Instance_hasProperty;
2746     definition.getProperty = &Instance_getProperty;
2747     definition.setProperty = &Instance_setProperty;
2748     definition.deleteProperty = &Instance_deleteProperty;
2749     definition.getPropertyNames = &Instance_getPropertyNames;
2750     definition.callAsConstructor = &Instance_callAsConstructor;
2751     definition.hasInstance = &Instance_hasInstance;
2752     definition.finalize = &CYFinalize;
2753     Instance::Class_ = JSClassCreate(&definition);
2754
2755     definition.className = "ArrayInstance";
2756     ArrayInstance_ = JSClassCreate(&definition);
2757
2758     definition.className = "BooleanInstance";
2759     BooleanInstance_ = JSClassCreate(&definition);
2760
2761     definition.className = "NumberInstance";
2762     NumberInstance_ = JSClassCreate(&definition);
2763
2764     definition.className = "ObjectInstance";
2765     ObjectInstance_ = JSClassCreate(&definition);
2766
2767     definition.className = "StringInstance";
2768     StringInstance_ = JSClassCreate(&definition);
2769
2770     definition.className = "FunctionInstance";
2771     definition.staticValues = FunctionInstance_staticValues;
2772     definition.callAsFunction = &FunctionInstance_callAsFunction;
2773     FunctionInstance_ = JSClassCreate(&definition);
2774
2775     definition = kJSClassDefinitionEmpty;
2776     definition.className = "Class";
2777     definition.staticFunctions = Class_staticFunctions;
2778     ClassInstance_ = JSClassCreate(&definition);
2779
2780     definition = kJSClassDefinitionEmpty;
2781     definition.className = "Internal";
2782     definition.staticFunctions = Internal_staticFunctions;
2783     definition.hasProperty = &Internal_hasProperty;
2784     definition.getProperty = &Internal_getProperty;
2785     definition.setProperty = &Internal_setProperty;
2786     definition.getPropertyNames = &Internal_getPropertyNames;
2787     definition.finalize = &CYFinalize;
2788     Internal::Class_ = JSClassCreate(&definition);
2789
2790     definition = kJSClassDefinitionEmpty;
2791     definition.className = "Message";
2792     definition.staticFunctions = cy::Functor::StaticFunctions;
2793     definition.staticValues = cy::Functor::StaticValues;
2794     definition.callAsFunction = &Message_callAsFunction;
2795     definition.finalize = &CYFinalize;
2796     Message_privateData::Class_ = JSClassCreate(&definition);
2797
2798     definition = kJSClassDefinitionEmpty;
2799     definition.className = "Messages";
2800     definition.hasProperty = &Messages_hasProperty;
2801     definition.getProperty = &Messages_getProperty;
2802     definition.setProperty = &Messages_setProperty;
2803     definition.getPropertyNames = &Messages_getPropertyNames;
2804     definition.finalize = &CYFinalize;
2805     Messages::Class_ = JSClassCreate(&definition);
2806
2807     definition = kJSClassDefinitionEmpty;
2808     definition.className = "Selector";
2809     definition.staticValues = Selector_staticValues;
2810     definition.staticFunctions = Selector_staticFunctions;
2811     definition.callAsFunction = &Selector_callAsFunction;
2812     definition.finalize = &CYFinalize;
2813     Selector_privateData::Class_ = JSClassCreate(&definition);
2814
2815     definition = kJSClassDefinitionEmpty;
2816     definition.className = "Super";
2817     definition.finalize = &CYFinalize;
2818     cy::Super::Class_ = JSClassCreate(&definition);
2819
2820     definition = kJSClassDefinitionEmpty;
2821     definition.className = "ObjectiveC::Classes";
2822     definition.hasProperty = &ObjectiveC_Classes_hasProperty;
2823     definition.getProperty = &ObjectiveC_Classes_getProperty;
2824     definition.getPropertyNames = &ObjectiveC_Classes_getPropertyNames;
2825     ObjectiveC_Classes_ = JSClassCreate(&definition);
2826
2827     definition = kJSClassDefinitionEmpty;
2828     definition.className = "ObjectiveC::Constants";
2829     definition.getProperty = &ObjectiveC_Constants_getProperty;
2830     definition.getPropertyNames = &ObjectiveC_Constants_getPropertyNames;
2831     ObjectiveC_Constants_ = JSClassCreate(&definition);
2832
2833 #ifdef __APPLE__
2834     definition = kJSClassDefinitionEmpty;
2835     definition.className = "ObjectiveC::Images";
2836     definition.getProperty = &ObjectiveC_Images_getProperty;
2837     definition.getPropertyNames = &ObjectiveC_Images_getPropertyNames;
2838     ObjectiveC_Images_ = JSClassCreate(&definition);
2839
2840     definition = kJSClassDefinitionEmpty;
2841     definition.className = "ObjectiveC::Image::Classes";
2842     definition.getProperty = &ObjectiveC_Image_Classes_getProperty;
2843     definition.getPropertyNames = &ObjectiveC_Image_Classes_getPropertyNames;
2844     ObjectiveC_Image_Classes_ = JSClassCreate(&definition);
2845 #endif
2846
2847     definition = kJSClassDefinitionEmpty;
2848     definition.className = "ObjectiveC::Protocols";
2849     definition.getProperty = &ObjectiveC_Protocols_getProperty;
2850     definition.getPropertyNames = &ObjectiveC_Protocols_getPropertyNames;
2851     ObjectiveC_Protocols_ = JSClassCreate(&definition);
2852
2853 #ifdef __APPLE__
2854     class_addMethod(NSCFType_, @selector(cy$toJSON:inContext:), reinterpret_cast<IMP>(&NSCFType$cy$toJSON$inContext$),
2855         // XXX: this is horrible; there has to be a better way to do this
2856     #ifdef __LP64__
2857         "^{OpaqueJSValue=}32@0:8@16^{OpaqueJSContext=}24"
2858     #else
2859         "^{OpaqueJSValue=}16@0:4@8^{OpaqueJSContext=}12"
2860     #endif
2861     );
2862 #endif
2863 } CYPoolCatch() }
2864
2865 void CYObjectiveC_SetupContext(JSContextRef context) { CYPoolTry {
2866     JSObjectRef global(CYGetGlobalObject(context));
2867     JSObjectRef cy(CYCastJSObject(context, CYGetProperty(context, global, cy_s)));
2868     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
2869     JSObjectRef all(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("all"))));
2870     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
2871
2872     JSObjectRef ObjectiveC(JSObjectMake(context, NULL, NULL));
2873     CYSetProperty(context, cycript, CYJSString("ObjectiveC"), ObjectiveC);
2874
2875     JSObjectRef protocols(JSObjectMake(context, ObjectiveC_Protocols_, NULL));
2876     CYSetProperty(context, ObjectiveC, CYJSString("protocols"), protocols);
2877     CYArrayPush(context, alls, protocols);
2878
2879     JSObjectRef classes(JSObjectMake(context, ObjectiveC_Classes_, NULL));
2880     CYSetProperty(context, ObjectiveC, CYJSString("classes"), classes);
2881     CYArrayPush(context, alls, classes);
2882
2883     JSObjectRef constants(JSObjectMake(context, ObjectiveC_Constants_, NULL));
2884     CYSetProperty(context, ObjectiveC, CYJSString("constants"), constants);
2885     CYArrayPush(context, alls, constants);
2886
2887 #ifdef __APPLE__
2888     CYSetProperty(context, ObjectiveC, CYJSString("images"), JSObjectMake(context, ObjectiveC_Images_, NULL));
2889 #endif
2890
2891     JSObjectRef Message(JSObjectMakeConstructor(context, Message_privateData::Class_, NULL));
2892     JSObjectRef Selector(JSObjectMakeConstructor(context, Selector_privateData::Class_, &Selector_new));
2893     JSObjectRef Super(JSObjectMakeConstructor(context, cy::Super::Class_, &Super_new));
2894
2895     JSObjectRef Instance(JSObjectMakeConstructor(context, Instance::Class_, &Instance_new));
2896     JSObjectRef Instance_prototype(CYCastJSObject(context, CYGetProperty(context, Instance, prototype_s)));
2897     CYSetProperty(context, cy, CYJSString("Instance_prototype"), Instance_prototype);
2898
2899     JSObjectRef ArrayInstance(JSObjectMakeConstructor(context, ArrayInstance_, NULL));
2900     JSObjectRef ArrayInstance_prototype(CYCastJSObject(context, CYGetProperty(context, ArrayInstance, prototype_s)));
2901     CYSetProperty(context, cy, CYJSString("ArrayInstance_prototype"), ArrayInstance_prototype);
2902     JSObjectRef Array_prototype(CYGetCachedObject(context, CYJSString("Array_prototype")));
2903     CYSetPrototype(context, ArrayInstance_prototype, Array_prototype);
2904
2905     JSObjectRef BooleanInstance(JSObjectMakeConstructor(context, BooleanInstance_, NULL));
2906     JSObjectRef BooleanInstance_prototype(CYCastJSObject(context, CYGetProperty(context, BooleanInstance, prototype_s)));
2907     CYSetProperty(context, cy, CYJSString("BooleanInstance_prototype"), BooleanInstance_prototype);
2908     JSObjectRef Boolean_prototype(CYGetCachedObject(context, CYJSString("Boolean_prototype")));
2909     CYSetPrototype(context, BooleanInstance_prototype, Boolean_prototype);
2910
2911     JSObjectRef ClassInstance(JSObjectMakeConstructor(context, ClassInstance_, NULL));
2912     JSObjectRef ClassInstance_prototype(CYCastJSObject(context, CYGetProperty(context, ClassInstance, prototype_s)));
2913     CYSetProperty(context, cy, CYJSString("ClassInstance_prototype"), ClassInstance_prototype);
2914     // XXX: this doesn't fit the pattern of the other ones; maybe it sort of should?
2915     CYSetPrototype(context, ClassInstance_prototype, Instance_prototype);
2916
2917     JSObjectRef FunctionInstance(JSObjectMakeConstructor(context, FunctionInstance_, NULL));
2918     JSObjectRef FunctionInstance_prototype(CYCastJSObject(context, CYGetProperty(context, FunctionInstance, prototype_s)));
2919     CYSetProperty(context, cy, CYJSString("FunctionInstance_prototype"), FunctionInstance_prototype);
2920     JSObjectRef Function_prototype(CYGetCachedObject(context, CYJSString("Function_prototype")));
2921     CYSetPrototype(context, FunctionInstance_prototype, Function_prototype);
2922
2923     JSObjectRef NumberInstance(JSObjectMakeConstructor(context, NumberInstance_, NULL));
2924     JSObjectRef NumberInstance_prototype(CYCastJSObject(context, CYGetProperty(context, NumberInstance, prototype_s)));
2925     CYSetProperty(context, cy, CYJSString("NumberInstance_prototype"), NumberInstance_prototype);
2926     JSObjectRef Number_prototype(CYGetCachedObject(context, CYJSString("Number_prototype")));
2927     CYSetPrototype(context, NumberInstance_prototype, Number_prototype);
2928
2929     JSObjectRef ObjectInstance(JSObjectMakeConstructor(context, ObjectInstance_, NULL));
2930     JSObjectRef ObjectInstance_prototype(CYCastJSObject(context, CYGetProperty(context, ObjectInstance, prototype_s)));
2931     CYSetProperty(context, cy, CYJSString("ObjectInstance_prototype"), ObjectInstance_prototype);
2932     JSObjectRef Object_prototype(CYGetCachedObject(context, CYJSString("Object_prototype")));
2933     CYSetPrototype(context, ObjectInstance_prototype, Object_prototype);
2934
2935     JSObjectRef StringInstance(JSObjectMakeConstructor(context, StringInstance_, NULL));
2936     JSObjectRef StringInstance_prototype(CYCastJSObject(context, CYGetProperty(context, StringInstance, prototype_s)));
2937     CYSetProperty(context, cy, CYJSString("StringInstance_prototype"), StringInstance_prototype);
2938     JSObjectRef String_prototype(CYGetCachedObject(context, CYJSString("String_prototype")));
2939     CYSetPrototype(context, StringInstance_prototype, String_prototype);
2940
2941     CYSetProperty(context, cycript, CYJSString("Instance"), Instance);
2942     CYSetProperty(context, cycript, CYJSString("Selector"), Selector);
2943     CYSetProperty(context, cycript, CYJSString("objc_super"), Super);
2944
2945     JSObjectRef box(JSObjectMakeFunctionWithCallback(context, CYJSString("box"), &Instance_box_callAsFunction));
2946     CYSetProperty(context, Instance, CYJSString("box"), box, kJSPropertyAttributeDontEnum);
2947
2948 #ifdef __APPLE__
2949     CYSetProperty(context, all, CYJSString("choose"), &choose, kJSPropertyAttributeDontEnum);
2950 #endif
2951
2952     CYSetProperty(context, all, CYJSString("objc_msgSend"), &$objc_msgSend, kJSPropertyAttributeDontEnum);
2953
2954     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Message, prototype_s)), Function_prototype);
2955     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Selector, prototype_s)), Function_prototype);
2956
2957     JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
2958     CYSetProperty(context, cache, CYJSString("YES"), JSValueMakeBoolean(context, true), kJSPropertyAttributeDontEnum);
2959     CYSetProperty(context, cache, CYJSString("NO"), JSValueMakeBoolean(context, false), kJSPropertyAttributeDontEnum);
2960     CYSetProperty(context, cache, CYJSString("id"), CYMakeType(context, sig::Object()), kJSPropertyAttributeDontEnum);
2961     CYSetProperty(context, cache, CYJSString("Class"), CYMakeType(context, sig::Meta()), kJSPropertyAttributeDontEnum);
2962     CYSetProperty(context, cache, CYJSString("SEL"), CYMakeType(context, sig::Selector()), kJSPropertyAttributeDontEnum);
2963 } CYPoolCatch() }
2964
2965 static void *CYObjectiveC_CastSymbol(const char *name) {
2966     if (false);
2967 #ifdef __GNU_LIBOBJC__
2968     else if (strcmp(name, "object_getClass") == 0)
2969         return reinterpret_cast<void *>(&object_getClass);
2970 #endif
2971     return NULL;
2972 }
2973
2974 static CYHook CYObjectiveCHook = {
2975     &CYObjectiveC_ExecuteStart,
2976     &CYObjectiveC_ExecuteEnd,
2977     &CYObjectiveC_CallFunction,
2978     &CYObjectiveC_Initialize,
2979     &CYObjectiveC_SetupContext,
2980     &CYObjectiveC_CastSymbol,
2981 };
2982
2983 CYRegisterHook CYObjectiveC(&CYObjectiveCHook);
2984
2985 _extern void CydgetSetupContext(JSGlobalContextRef context) { CYObjectiveTry_ {
2986     CYSetupContext(context);
2987 } CYObjectiveCatch }
2988
2989 _extern void CydgetMemoryParse(const uint16_t **data, size_t *size) { try {
2990     CYPool pool;
2991
2992     CYUTF8String utf8(CYPoolUTF8String(pool, CYUTF16String(*data, *size)));
2993     utf8 = CYPoolCode(pool, utf8);
2994
2995     CYUTF16String utf16(CYPoolUTF16String(pool, CYUTF8String(utf8.data, utf8.size)));
2996     size_t bytes(utf16.size * sizeof(uint16_t));
2997     uint16_t *copy(reinterpret_cast<uint16_t *>(malloc(bytes)));
2998     memcpy(copy, utf16.data, bytes);
2999
3000     *data = copy;
3001     *size = utf16.size;
3002 } catch (const CYException &exception) {
3003     CYPool pool;
3004     @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"%s", exception.PoolCString(pool)] userInfo:nil];
3005 } }