ObjectiveC/Library.mm

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include <Foundation/Foundation.h>
  23
  24 #include "ObjectiveC/Internal.hpp"
  25
  26 #include <objc/objc-api.h>
  27
  28 #include "cycript.hpp"
  29
  30 #include "ObjectiveC/Internal.hpp"
  31
  32 #ifdef __APPLE__
  33 #include <CoreFoundation/CoreFoundation.h>
  34 #include <JavaScriptCore/JSStringRefCF.h>
  35 #include <objc/runtime.h>
  36 #endif
  37
  38 #include "Error.hpp"
  39 #include "JavaScript.hpp"
  40 #include "String.hpp"
  41 #include "Execute.hpp"
  42
  43 #include <cmath>
  44 #include <map>
  45 #include <set>
  46
  47 #include <dlfcn.h>
  48
  49 #define CYObjectiveTry_(context) { \
  50     JSContextRef context_(context); \
  51     try
  52 #define CYObjectiveTry { \
  53     try
  54 #define CYObjectiveCatch \
  55     catch (const CYException &error) { \
  56         @throw CYCastNSObject(NULL, context_, error.CastJSValue(context_)); \
  57     } \
  58 }
  59
  60 #define CYPoolTry { \
  61     id _saved(nil); \
  62     NSAutoreleasePool *_pool([[NSAutoreleasePool alloc] init]); \
  63     @try
  64 #define CYPoolCatch(value) \
  65     @catch (NSException *error) { \
  66         _saved = [error retain]; \
  67         throw CYJSError(context, CYCastJSValue(context, error)); \
  68         return value; \
  69     } @finally { \
  70         [_pool release]; \
  71         if (_saved != nil) \
  72             [_saved autorelease]; \
  73     } \
  74 }
  75
  76 #define CYSadTry { \
  77     @try
  78 #define CYSadCatch(value) \
  79     @catch (NSException *error ) { \
  80         throw CYJSError(context, CYCastJSValue(context, error)); \
  81     } return value; \
  82 }
  83
  84 #ifndef __APPLE__
  85 #define class_getSuperclass GSObjCSuper
  86 #define class_getInstanceVariable GSCGetInstanceVariableDefinition
  87 #define class_getName GSNameFromClass
  88
  89 #define class_removeMethods(cls, list) GSRemoveMethodList(cls, list, YES)
  90
  91 #define ivar_getName(ivar) ((ivar)->ivar_name)
  92 #define ivar_getOffset(ivar) ((ivar)->ivar_offset)
  93 #define ivar_getTypeEncoding(ivar) ((ivar)->ivar_type)
  94
  95 #define method_getName(method) ((method)->method_name)
  96 #define method_getImplementation(method) ((method)->method_imp)
  97 #define method_getTypeEncoding(method) ((method)->method_types)
  98 #define method_setImplementation(method, imp) ((void) ((method)->method_imp = (imp)))
  99
 100 #undef objc_getClass
 101 #define objc_getClass GSClassFromName
 102
 103 #define objc_getProtocol GSProtocolFromName
 104
 105 #define object_getClass GSObjCClass
 106
 107 #define object_getInstanceVariable(object, name, value) ({ \
 108     objc_ivar *ivar(class_getInstanceVariable(object_getClass(object), name)); \
 109     _assert(value != NULL); \
 110     if (ivar != NULL) \
 111         GSObjCGetVariable(object, ivar_getOffset(ivar), sizeof(void *), value); \
 112     ivar; \
 113 })
 114
 115 #define object_setIvar(object, ivar, value) ({ \
 116     void *data = (value); \
 117     GSObjCSetVariable(object, ivar_getOffset(ivar), sizeof(void *), &data); \
 118 })
 119
 120 #define protocol_getName(protocol) [(protocol) name]
 121 #endif
 122
 123 static void (*$objc_setAssociatedObject)(id object, void *key, id value, objc_AssociationPolicy policy);
 124 static id (*$objc_getAssociatedObject)(id object, void *key);
 125 static void (*$objc_removeAssociatedObjects)(id object);
 126
 127 struct BlockLiteral {
 128     Class isa;
 129     int flags;
 130     int reserved;
 131     void (*invoke)(void *, ...);
 132     void *descriptor;
 133 };
 134
 135 struct BlockDescriptor1 {
 136     unsigned long int reserved;
 137     unsigned long int size;
 138 };
 139
 140 struct BlockDescriptor2 {
 141     void (*copy_helper)(BlockLiteral *dst, BlockLiteral *src);
 142     void (*dispose_helper)(BlockLiteral *src);
 143 };
 144
 145 struct BlockDescriptor3 {
 146     const char *signature;
 147     const char *layout;
 148 };
 149
 150 enum {
 151     BLOCK_DEALLOCATING = 0x0001,
 152     BLOCK_REFCOUNT_MASK = 0xfffe,
 153     BLOCK_NEEDS_FREE = 1 << 24,
 154     BLOCK_HAS_COPY_DISPOSE = 1 << 25,
 155     BLOCK_HAS_CTOR = 1 << 26,
 156     BLOCK_IS_GC = 1 << 27,
 157     BLOCK_IS_GLOBAL = 1 << 28,
 158     BLOCK_HAS_STRET = 1 << 29,
 159     BLOCK_HAS_SIGNATURE = 1 << 30,
 160 };
 161
 162 JSValueRef CYSendMessage(CYPool &pool, JSContextRef context, id self, Class super, SEL _cmd, size_t count, const JSValueRef arguments[], bool initialize, JSValueRef *exception);
 163
 164 /* Objective-C Pool Release {{{ */
 165 void CYPoolRelease_(void *data) {
 166     id object(reinterpret_cast<id>(data));
 167     [object release];
 168 }
 169
 170 id CYPoolRelease_(CYPool *pool, id object) {
 171     if (object == nil)
 172         return nil;
 173     else if (pool == NULL)
 174         return [object autorelease];
 175     else {
 176         pool->atexit(CYPoolRelease_);
 177         return object;
 178     }
 179 }
 180
 181 template <typename Type_>
 182 Type_ CYPoolRelease(CYPool *pool, Type_ object) {
 183     return (Type_) CYPoolRelease_(pool, (id) object);
 184 }
 185 /* }}} */
 186 /* Objective-C Strings {{{ */
 187 const char *CYPoolCString(CYPool &pool, JSContextRef context, NSString *value) {
 188     size_t size([value maximumLengthOfBytesUsingEncoding:NSUTF8StringEncoding] + 1);
 189     char *string(new(pool) char[size]);
 190     if (![value getCString:string maxLength:size encoding:NSUTF8StringEncoding])
 191         throw CYJSError(context, "[NSString getCString:maxLength:encoding:] == NO");
 192     return string;
 193 }
 194
 195 JSStringRef CYCopyJSString(JSContextRef context, NSString *value) {
 196 #ifdef __APPLE__
 197     return JSStringCreateWithCFString(reinterpret_cast<CFStringRef>(value));
 198 #else
 199     CYPool pool;
 200     return CYCopyJSString(CYPoolCString(pool, context, value));
 201 #endif
 202 }
 203
 204 JSStringRef CYCopyJSString(JSContextRef context, NSObject *value) {
 205     if (value == nil)
 206         return NULL;
 207     // XXX: this definition scares me; is anyone using this?!
 208     NSString *string([value description]);
 209     return CYCopyJSString(context, string);
 210 }
 211
 212 NSString *CYCopyNSString(const CYUTF8String &value) {
 213 #ifdef __APPLE__
 214     return (NSString *) CFStringCreateWithBytes(kCFAllocatorDefault, reinterpret_cast<const UInt8 *>(value.data), value.size, kCFStringEncodingUTF8, true);
 215 #else
 216     return [[NSString alloc] initWithBytes:value.data length:value.size encoding:NSUTF8StringEncoding];
 217 #endif
 218 }
 219
 220 NSString *CYCopyNSString(JSContextRef context, JSStringRef value) {
 221 #ifdef __APPLE__
 222     return (NSString *) JSStringCopyCFString(kCFAllocatorDefault, value);
 223 #else
 224     CYPool pool;
 225     return CYCopyNSString(CYPoolUTF8String(pool, context, value));
 226 #endif
 227 }
 228
 229 NSString *CYCopyNSString(JSContextRef context, JSValueRef value) {
 230     return CYCopyNSString(context, CYJSString(context, value));
 231 }
 232
 233 NSString *CYCastNSString(CYPool *pool, const CYUTF8String &value) {
 234     return CYPoolRelease(pool, CYCopyNSString(value));
 235 }
 236
 237 NSString *CYCastNSString(CYPool *pool, SEL sel) {
 238     const char *name(sel_getName(sel));
 239     return CYPoolRelease(pool, CYCopyNSString(CYUTF8String(name, strlen(name))));
 240 }
 241
 242 NSString *CYCastNSString(CYPool *pool, JSContextRef context, JSStringRef value) {
 243     return CYPoolRelease(pool, CYCopyNSString(context, value));
 244 }
 245
 246 CYUTF8String CYCastUTF8String(NSString *value) {
 247     NSData *data([value dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO]);
 248     return CYUTF8String(reinterpret_cast<const char *>([data bytes]), [data length]);
 249 }
 250 /* }}} */
 251
 252 JSValueRef CYCastJSValue(JSContextRef context, NSObject *value);
 253
 254 void CYThrow(JSContextRef context, NSException *error, JSValueRef *exception) {
 255     if (exception == NULL)
 256         throw error;
 257     *exception = CYCastJSValue(context, error);
 258 }
 259
 260 size_t CYGetIndex(NSString *value) {
 261     return CYGetIndex(CYCastUTF8String(value));
 262 }
 263
 264 bool CYGetOffset(CYPool &pool, JSContextRef context, NSString *value, ssize_t &index) {
 265     return CYGetOffset(CYPoolCString(pool, context, value), index);
 266 }
 267
 268 static JSClassRef Instance_;
 269
 270 static JSClassRef ArrayInstance_;
 271 static JSClassRef FunctionInstance_;
 272 static JSClassRef ObjectInstance_;
 273 static JSClassRef StringInstance_;
 274
 275 static JSClassRef Class_;
 276 static JSClassRef Internal_;
 277 static JSClassRef Message_;
 278 static JSClassRef Messages_;
 279 static JSClassRef Selector_;
 280 static JSClassRef Super_;
 281
 282 static JSClassRef ObjectiveC_Classes_;
 283 static JSClassRef ObjectiveC_Constants_;
 284 static JSClassRef ObjectiveC_Protocols_;
 285
 286 #ifdef __APPLE__
 287 static JSClassRef ObjectiveC_Image_Classes_;
 288 static JSClassRef ObjectiveC_Images_;
 289 #endif
 290
 291 #ifdef __APPLE__
 292 static Class NSCFBoolean_;
 293 static Class NSCFType_;
 294 static Class NSGenericDeallocHandler_;
 295 static Class NSZombie_;
 296
 297 static std::set<Class> banned_;
 298 #else
 299 static Class NSBoolNumber_;
 300 #endif
 301
 302 static Class NSArray_;
 303 static Class NSBlock_;
 304 static Class NSDictionary_;
 305 static Class NSString_;
 306 static Class Object_;
 307
 308 static Type_privateData *Object_type;
 309 static Type_privateData *Selector_type;
 310
 311 Type_privateData *Instance::GetType() const {
 312     return Object_type;
 313 }
 314
 315 Type_privateData *Selector_privateData::GetType() const {
 316     return Selector_type;
 317 }
 318
 319 static JSValueRef Instance_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception);
 320
 321 JSValueRef CYGetClassPrototype(JSContextRef context, Class self, bool meta) {
 322     if (self == nil)
 323         return CYGetCachedObject(context, CYJSString("Instance_prototype"));
 324     else if (meta && !class_isMetaClass(self))
 325         return CYGetCachedObject(context, CYJSString("Class_prototype"));
 326
 327     JSObjectRef global(CYGetGlobalObject(context));
 328     JSObjectRef cy(CYCastJSObject(context, CYGetProperty(context, global, cy_s)));
 329
 330     char label[32];
 331     sprintf(label, "i%p", self);
 332     CYJSString name(label);
 333
 334     JSValueRef value(CYGetProperty(context, cy, name));
 335     if (!JSValueIsUndefined(context, value))
 336         return value;
 337
 338     JSClassRef _class(NULL);
 339     JSValueRef prototype;
 340
 341     if (self == NSArray_)
 342         prototype = CYGetCachedObject(context, CYJSString("ArrayInstance_prototype"));
 343     else if (self == NSBlock_)
 344         prototype = CYGetCachedObject(context, CYJSString("FunctionInstance_prototype"));
 345     else if (self == NSDictionary_)
 346         prototype = CYGetCachedObject(context, CYJSString("ObjectInstance_prototype"));
 347     else if (self == NSString_)
 348         prototype = CYGetCachedObject(context, CYJSString("StringInstance_prototype"));
 349     else
 350         prototype = CYGetClassPrototype(context, class_getSuperclass(self), meta);
 351
 352     JSObjectRef object(JSObjectMake(context, _class, NULL));
 353     JSObjectSetPrototype(context, object, prototype);
 354     CYSetProperty(context, cy, name, object);
 355
 356     return object;
 357 }
 358
 359 _finline JSValueRef CYGetClassPrototype(JSContextRef context, Class self) {
 360     return CYGetClassPrototype(context, self, class_isMetaClass(self));
 361 }
 362
 363 JSObjectRef Messages::Make(JSContextRef context, Class _class) {
 364     JSObjectRef value(JSObjectMake(context, Messages_, new Messages(_class)));
 365     if (Class super = class_getSuperclass(_class))
 366         JSObjectSetPrototype(context, value, Messages::Make(context, super));
 367     return value;
 368 }
 369
 370 JSObjectRef Internal::Make(JSContextRef context, id object, JSObjectRef owner) {
 371     return JSObjectMake(context, Internal_, new Internal(object, context, owner));
 372 }
 373
 374 namespace cy {
 375 JSObjectRef Super::Make(JSContextRef context, id object, Class _class) {
 376     JSObjectRef value(JSObjectMake(context, Super_, new Super(object, _class)));
 377     return value;
 378 } }
 379
 380 JSObjectRef Instance::Make(JSContextRef context, id object, Flags flags) {
 381     JSObjectRef value(JSObjectMake(context, Instance_, new Instance(object, flags)));
 382     JSObjectSetPrototype(context, value, CYGetClassPrototype(context, object_getClass(object)));
 383     return value;
 384 }
 385
 386 Instance::~Instance() {
 387     if ((flags_ & Transient) == 0)
 388         // XXX: does this handle background threads correctly?
 389         // XXX: this simply does not work on the console because I'm stupid
 390         [GetValue() performSelector:@selector(release) withObject:nil afterDelay:0];
 391 }
 392
 393 struct Message_privateData :
 394     cy::Functor
 395 {
 396     SEL sel_;
 397
 398     Message_privateData(SEL sel, const char *type, IMP value = NULL) :
 399         cy::Functor(type, reinterpret_cast<void (*)()>(value)),
 400         sel_(sel)
 401     {
 402     }
 403 };
 404
 405 JSObjectRef CYMakeInstance(JSContextRef context, id object, bool transient) {
 406     Instance::Flags flags;
 407
 408     if (transient)
 409         flags = Instance::Transient;
 410     else {
 411         flags = Instance::None;
 412         object = [object retain];
 413     }
 414
 415     return Instance::Make(context, object, flags);
 416 }
 417
 418 @interface NSMethodSignature (Cycript)
 419 - (NSString *) _typeString;
 420 @end
 421
 422 @interface NSObject (Cycript)
 423
 424 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context;
 425 - (JSType) cy$JSType;
 426
 427 - (JSValueRef) cy$toJSON:(NSString *)key inContext:(JSContextRef)context;
 428 - (NSString *) cy$toCYON:(bool)objective;
 429
 430 - (bool) cy$hasProperty:(NSString *)name;
 431 - (NSObject *) cy$getProperty:(NSString *)name;
 432 - (JSValueRef) cy$getProperty:(NSString *)name inContext:(JSContextRef)context;
 433 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value;
 434 - (bool) cy$deleteProperty:(NSString *)name;
 435 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context;
 436
 437 + (bool) cy$hasImplicitProperties;
 438
 439 @end
 440
 441 @protocol Cycript
 442 - (id) cy$box;
 443 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context;
 444 @end
 445
 446 NSString *CYCastNSCYON(id value, bool objective) {
 447     NSString *string;
 448
 449     if (value == nil)
 450         string = @"nil";
 451     else {
 452         Class _class(object_getClass(value));
 453         SEL sel(@selector(cy$toCYON:));
 454
 455         if (objc_method *toCYON = class_getInstanceMethod(_class, sel))
 456             string = reinterpret_cast<NSString *(*)(id, SEL, bool)>(method_getImplementation(toCYON))(value, sel, objective);
 457         else if (objc_method *methodSignatureForSelector = class_getInstanceMethod(_class, @selector(methodSignatureForSelector:))) {
 458             if (reinterpret_cast<NSMethodSignature *(*)(id, SEL, SEL)>(method_getImplementation(methodSignatureForSelector))(value, @selector(methodSignatureForSelector:), sel) != nil)
 459                 string = [value cy$toCYON:objective];
 460             else goto fail;
 461         } else fail: {
 462             if (false);
 463 #ifdef __APPLE__
 464             else if (value == NSZombie_)
 465                 string = @"_NSZombie_";
 466             else if (_class == NSZombie_)
 467                 string = [NSString stringWithFormat:@"<_NSZombie_: %p>", value];
 468             // XXX: frowny /in/ the pants
 469             else if (banned_.find(value) != banned_.end())
 470                 string = nil;
 471 #endif
 472             else
 473                 string = [NSString stringWithFormat:@"%@", value];
 474         }
 475
 476         // XXX: frowny pants
 477         if (string == nil)
 478             string = @"undefined";
 479     }
 480
 481     return string;
 482 }
 483
 484 #ifdef __APPLE__
 485 struct PropertyAttributes {
 486     CYPool pool_;
 487
 488     const char *name;
 489
 490     const char *variable;
 491
 492     const char *getter_;
 493     const char *setter_;
 494
 495     bool readonly;
 496     bool copy;
 497     bool retain;
 498     bool nonatomic;
 499     bool dynamic;
 500     bool weak;
 501     bool garbage;
 502
 503     PropertyAttributes(objc_property_t property) :
 504         variable(NULL),
 505         getter_(NULL),
 506         setter_(NULL),
 507         readonly(false),
 508         copy(false),
 509         retain(false),
 510         nonatomic(false),
 511         dynamic(false),
 512         weak(false),
 513         garbage(false)
 514     {
 515         name = property_getName(property);
 516         const char *attributes(property_getAttributes(property));
 517
 518         for (char *token(pool_.strdup(attributes)), *next; token != NULL; token = next) {
 519             if ((next = strchr(token, ',')) != NULL)
 520                 *next++ = '\0';
 521             switch (*token) {
 522                 case 'R': readonly = true; break;
 523                 case 'C': copy = true; break;
 524                 case '&': retain = true; break;
 525                 case 'N': nonatomic = true; break;
 526                 case 'G': getter_ = token + 1; break;
 527                 case 'S': setter_ = token + 1; break;
 528                 case 'V': variable = token + 1; break;
 529             }
 530         }
 531
 532         /*if (variable == NULL) {
 533             variable = property_getName(property);
 534             size_t size(strlen(variable));
 535             char *name(new(pool_) char[size + 2]);
 536             name[0] = '_';
 537             memcpy(name + 1, variable, size);
 538             name[size + 1] = '\0';
 539             variable = name;
 540         }*/
 541     }
 542
 543     const char *Getter() {
 544         if (getter_ == NULL)
 545             getter_ = pool_.strdup(name);
 546         return getter_;
 547     }
 548
 549     const char *Setter() {
 550         if (setter_ == NULL && !readonly) {
 551             size_t length(strlen(name));
 552
 553             char *temp(new(pool_) char[length + 5]);
 554             temp[0] = 's';
 555             temp[1] = 'e';
 556             temp[2] = 't';
 557
 558             if (length != 0) {
 559                 temp[3] = toupper(name[0]);
 560                 memcpy(temp + 4, name + 1, length - 1);
 561             }
 562
 563             temp[length + 3] = ':';
 564             temp[length + 4] = '\0';
 565             setter_ = temp;
 566         }
 567
 568         return setter_;
 569     }
 570
 571 };
 572 #endif
 573
 574 @interface CYWebUndefined : NSObject {
 575 }
 576
 577 + (CYWebUndefined *) undefined;
 578
 579 @end
 580
 581 @implementation CYWebUndefined
 582
 583 + (CYWebUndefined *) undefined {
 584     static CYWebUndefined *instance_([[CYWebUndefined alloc] init]);
 585     return instance_;
 586 }
 587
 588 @end
 589
 590 #define WebUndefined CYWebUndefined
 591
 592 /* Bridge: CYJSObject {{{ */
 593 @interface CYJSObject : NSMutableDictionary {
 594     JSObjectRef object_;
 595     JSGlobalContextRef context_;
 596 }
 597
 598 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 599
 600 - (NSUInteger) count;
 601 - (id) objectForKey:(id)key;
 602 - (NSEnumerator *) keyEnumerator;
 603 - (void) setObject:(id)object forKey:(id)key;
 604 - (void) removeObjectForKey:(id)key;
 605
 606 @end
 607 /* }}} */
 608 /* Bridge: CYJSArray {{{ */
 609 @interface CYJSArray : NSMutableArray {
 610     JSObjectRef object_;
 611     JSGlobalContextRef context_;
 612 }
 613
 614 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 615
 616 - (NSUInteger) count;
 617 - (id) objectAtIndex:(NSUInteger)index;
 618
 619 - (void) addObject:(id)anObject;
 620 - (void) insertObject:(id)anObject atIndex:(NSUInteger)index;
 621 - (void) removeLastObject;
 622 - (void) removeObjectAtIndex:(NSUInteger)index;
 623 - (void) replaceObjectAtIndex:(NSUInteger)index withObject:(id)anObject;
 624
 625 @end
 626 /* }}} */
 627
 628 _finline bool CYJSValueIsNSObject(JSContextRef context, JSValueRef value) {
 629     return JSValueIsObjectOfClass(context, value, Instance_);
 630 }
 631
 632 _finline bool CYJSValueIsInstanceOfCachedConstructor(JSContextRef context, JSValueRef value, JSStringRef cache) {
 633     JSValueRef exception(NULL);
 634     JSObjectRef constructor(CYGetCachedObject(context, cache));
 635     bool is(JSValueIsInstanceOfConstructor(context, value, constructor, &exception));
 636     CYThrow(context, exception);
 637     return is;
 638 }
 639
 640 NSObject *CYMakeBlock(void (*invoke)(), sig::Signature &signature) {
 641     BlockLiteral *literal(reinterpret_cast<BlockLiteral *>(malloc(sizeof(BlockLiteral))));
 642
 643     struct Descriptor {
 644         struct {
 645             BlockDescriptor1 one_;
 646             BlockDescriptor2 two_;
 647             BlockDescriptor3 three_;
 648         } d_;
 649
 650         CYPool pool_;
 651     };
 652
 653     Descriptor *descriptor(new Descriptor);
 654     memset(&descriptor->d_, 0, sizeof(descriptor->d_));
 655
 656     literal->isa = objc_getClass("__NSGlobalBlock__");
 657     literal->flags = BLOCK_HAS_SIGNATURE | BLOCK_HAS_COPY_DISPOSE | BLOCK_IS_GLOBAL;
 658     literal->reserved = 0;
 659     literal->invoke = reinterpret_cast<void (*)(void *, ...)>(invoke);
 660     literal->descriptor = descriptor;
 661
 662     descriptor->d_.one_.size = sizeof(descriptor->d_);
 663     descriptor->d_.three_.signature = sig::Unparse(descriptor->pool_, &signature);
 664
 665     return reinterpret_cast<NSObject *>(literal);
 666 }
 667
 668 NSObject *CYCastNSObject(CYPool *pool, JSContextRef context, JSObjectRef object) {
 669     if (CYJSValueIsNSObject(context, object)) {
 670         Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
 671         return internal->GetValue();
 672     }
 673
 674     if (JSValueIsObjectOfClass(context, object, Functor_)) {
 675         cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
 676         return CYMakeBlock(internal->GetValue(), internal->signature_);
 677     }
 678
 679     bool array(CYJSValueIsInstanceOfCachedConstructor(context, object, Array_s));
 680     id value(array ? [CYJSArray alloc] : [CYJSObject alloc]);
 681     return CYPoolRelease(pool, [value initWithJSObject:object inContext:context]);
 682 }
 683
 684 NSNumber *CYCopyNSNumber(JSContextRef context, JSValueRef value) {
 685     return [[NSNumber alloc] initWithDouble:CYCastDouble(context, value)];
 686 }
 687
 688 #ifndef __APPLE__
 689 @interface NSBoolNumber : NSNumber {
 690 }
 691 @end
 692 #endif
 693
 694 id CYNSObject(CYPool *pool, JSContextRef context, JSValueRef value, bool cast) {
 695     id object;
 696     bool copy;
 697
 698     switch (JSType type = JSValueGetType(context, value)) {
 699         case kJSTypeUndefined:
 700             object = [WebUndefined undefined];
 701             copy = false;
 702         break;
 703
 704         case kJSTypeNull:
 705             return NULL;
 706         break;
 707
 708         case kJSTypeBoolean:
 709 #ifdef __APPLE__
 710             object = (id) (CYCastBool(context, value) ? kCFBooleanTrue : kCFBooleanFalse);
 711             copy = false;
 712 #else
 713             object = [[NSBoolNumber alloc] initWithBool:CYCastBool(context, value)];
 714             copy = true;
 715 #endif
 716         break;
 717
 718         case kJSTypeNumber:
 719             object = CYCopyNSNumber(context, value);
 720             copy = true;
 721         break;
 722
 723         case kJSTypeString:
 724             object = CYCopyNSString(context, value);
 725             copy = true;
 726         break;
 727
 728         case kJSTypeObject:
 729             // XXX: this might could be more efficient
 730             object = CYCastNSObject(pool, context, (JSObjectRef) value);
 731             copy = false;
 732         break;
 733
 734         default:
 735             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 736         break;
 737     }
 738
 739     if (cast != copy)
 740         return object;
 741     else if (copy)
 742         return CYPoolRelease(pool, object);
 743     else
 744         return [object retain];
 745 }
 746
 747 NSObject *CYCastNSObject(CYPool *pool, JSContextRef context, JSValueRef value) {
 748     return CYNSObject(pool, context, value, true);
 749 }
 750
 751 NSObject *CYCopyNSObject(CYPool &pool, JSContextRef context, JSValueRef value) {
 752     return CYNSObject(&pool, context, value, false);
 753 }
 754
 755 /* Bridge: NSArray {{{ */
 756 @implementation NSArray (Cycript)
 757
 758 - (id) cy$box {
 759     return [[self mutableCopy] autorelease];
 760 }
 761
 762 - (NSString *) cy$toCYON:(bool)objective {
 763     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 764     [json appendString:@"@["];
 765
 766     bool comma(false);
 767 #ifdef __APPLE__
 768     for (id object in self) {
 769 #else
 770     for (size_t index(0), count([self count]); index != count; ++index) {
 771         id object([self objectAtIndex:index]);
 772 #endif
 773         if (comma)
 774             [json appendString:@","];
 775         else
 776             comma = true;
 777         if (object == nil || [object cy$JSType] != kJSTypeUndefined)
 778             [json appendString:CYCastNSCYON(object, true)];
 779         else {
 780             [json appendString:@","];
 781             comma = false;
 782         }
 783     }
 784
 785     [json appendString:@"]"];
 786     return json;
 787 }
 788
 789 - (bool) cy$hasProperty:(NSString *)name {
 790     if ([name isEqualToString:@"length"])
 791         return true;
 792
 793     size_t index(CYGetIndex(name));
 794     if (index == _not(size_t) || index >= [self count])
 795         return [super cy$hasProperty:name];
 796     else
 797         return true;
 798 }
 799
 800 - (NSObject *) cy$getProperty:(NSString *)name {
 801     size_t index(CYGetIndex(name));
 802     if (index == _not(size_t) || index >= [self count])
 803         return [super cy$getProperty:name];
 804     else
 805         return [self objectAtIndex:index];
 806 }
 807
 808 - (JSValueRef) cy$getProperty:(NSString *)name inContext:(JSContextRef)context {
 809     CYObjectiveTry_(context) {
 810         if ([name isEqualToString:@"length"])
 811             return CYCastJSValue(context, [self count]);
 812     } CYObjectiveCatch
 813
 814     return [super cy$getProperty:name inContext:context];
 815 }
 816
 817 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
 818     [super cy$getPropertyNames:names inContext:context];
 819
 820     for (size_t index(0), count([self count]); index != count; ++index) {
 821         id object([self objectAtIndex:index]);
 822         if (object == nil || [object cy$JSType] != kJSTypeUndefined) {
 823             char name[32];
 824             sprintf(name, "%zu", index);
 825             JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 826         }
 827     }
 828 }
 829
 830 + (bool) cy$hasImplicitProperties {
 831     return false;
 832 }
 833
 834 @end
 835 /* }}} */
 836 /* Bridge: NSBlock {{{ */
 837 #ifdef __APPLE__
 838 @interface NSBlock
 839 - (void) invoke;
 840 @end
 841 #endif
 842 /* }}} */
 843 /* Bridge: NSBoolNumber {{{ */
 844 #ifndef __APPLE__
 845 @implementation NSBoolNumber (Cycript)
 846
 847 - (JSType) cy$JSType {
 848     return kJSTypeBoolean;
 849 }
 850
 851 - (NSString *) cy$toCYON:(bool)objective {
 852     NSString *value([self boolValue] ? @"true" : @"false");
 853     return objective ? value : [NSString stringWithFormat:@"@%@", value];
 854 }
 855
 856 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_(context) {
 857     return CYCastJSValue(context, (bool) [self boolValue]);
 858 } CYObjectiveCatch }
 859
 860 @end
 861 #endif
 862 /* }}} */
 863 /* Bridge: NSDictionary {{{ */
 864 @implementation NSDictionary (Cycript)
 865
 866 - (id) cy$box {
 867     return [[self mutableCopy] autorelease];
 868 }
 869
 870 - (NSString *) cy$toCYON:(bool)objective {
 871     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 872     [json appendString:@"@{"];
 873
 874     bool comma(false);
 875 #ifdef __APPLE__
 876     for (NSObject *key in self) {
 877 #else
 878     NSEnumerator *keys([self keyEnumerator]);
 879     while (NSObject *key = [keys nextObject]) {
 880 #endif
 881         if (comma)
 882             [json appendString:@","];
 883         else
 884             comma = true;
 885         [json appendString:CYCastNSCYON(key, true)];
 886         [json appendString:@":"];
 887         NSObject *object([self objectForKey:key]);
 888         [json appendString:CYCastNSCYON(object, true)];
 889     }
 890
 891     [json appendString:@"}"];
 892     return json;
 893 }
 894
 895 - (bool) cy$hasProperty:(NSString *)name {
 896     return [self objectForKey:name] != nil;
 897 }
 898
 899 - (NSObject *) cy$getProperty:(NSString *)name {
 900     return [self objectForKey:name];
 901 }
 902
 903 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
 904     [super cy$getPropertyNames:names inContext:context];
 905
 906 #ifdef __APPLE__
 907     for (NSObject *key in self) {
 908 #else
 909     NSEnumerator *keys([self keyEnumerator]);
 910     while (NSObject *key = [keys nextObject]) {
 911 #endif
 912         JSPropertyNameAccumulatorAddName(names, CYJSString(context, key));
 913     }
 914 }
 915
 916 + (bool) cy$hasImplicitProperties {
 917     return false;
 918 }
 919
 920 @end
 921 /* }}} */
 922 /* Bridge: NSMutableArray {{{ */
 923 @implementation NSMutableArray (Cycript)
 924
 925 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
 926     if ([name isEqualToString:@"length"]) {
 927         // XXX: is this not intelligent?
 928         NSNumber *number(reinterpret_cast<NSNumber *>(value));
 929 #ifdef __APPLE__
 930         NSUInteger size([number unsignedIntegerValue]);
 931 #else
 932         NSUInteger size([number unsignedIntValue]);
 933 #endif
 934         NSUInteger count([self count]);
 935         if (size < count)
 936             [self removeObjectsInRange:NSMakeRange(size, count - size)];
 937         else if (size != count) {
 938             WebUndefined *undefined([WebUndefined undefined]);
 939             for (size_t i(count); i != size; ++i)
 940                 [self addObject:undefined];
 941         }
 942         return true;
 943     }
 944
 945     size_t index(CYGetIndex(name));
 946     if (index == _not(size_t))
 947         return [super cy$setProperty:name to:value];
 948
 949     id object(value ?: [NSNull null]);
 950
 951     size_t count([self count]);
 952     if (index < count)
 953         [self replaceObjectAtIndex:index withObject:object];
 954     else {
 955         if (index != count) {
 956             WebUndefined *undefined([WebUndefined undefined]);
 957             for (size_t i(count); i != index; ++i)
 958                 [self addObject:undefined];
 959         }
 960
 961         [self addObject:object];
 962     }
 963
 964     return true;
 965 }
 966
 967 - (bool) cy$deleteProperty:(NSString *)name {
 968     size_t index(CYGetIndex(name));
 969     if (index == _not(size_t) || index >= [self count])
 970         return [super cy$deleteProperty:name];
 971     [self replaceObjectAtIndex:index withObject:[WebUndefined undefined]];
 972     return true;
 973 }
 974
 975 @end
 976 /* }}} */
 977 /* Bridge: NSMutableDictionary {{{ */
 978 @implementation NSMutableDictionary (Cycript)
 979
 980 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
 981     [self setObject:(value ?: [NSNull null]) forKey:name];
 982     return true;
 983 }
 984
 985 - (bool) cy$deleteProperty:(NSString *)name {
 986     if ([self objectForKey:name] == nil)
 987         return false;
 988     else {
 989         [self removeObjectForKey:name];
 990         return true;
 991     }
 992 }
 993
 994 @end
 995 /* }}} */
 996 /* Bridge: NSNumber {{{ */
 997 @implementation NSNumber (Cycript)
 998
 999 - (JSType) cy$JSType {
1000 #ifdef __APPLE__
1001     // XXX: this just seems stupid
1002     if ([self class] == NSCFBoolean_)
1003         return kJSTypeBoolean;
1004 #endif
1005     return kJSTypeNumber;
1006 }
1007
1008 - (NSString *) cy$toCYON:(bool)objective {
1009     NSString *value([self cy$JSType] != kJSTypeBoolean ? [self stringValue] : [self boolValue] ? @"true" : @"false");
1010     return objective ? value : [NSString stringWithFormat:@"@%@", value];
1011 }
1012
1013 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_(context) {
1014     return [self cy$JSType] != kJSTypeBoolean ? CYCastJSValue(context, [self doubleValue]) : CYCastJSValue(context, static_cast<bool>([self boolValue]));
1015 } CYObjectiveCatch }
1016
1017 @end
1018 /* }}} */
1019 /* Bridge: NSNull {{{ */
1020 @implementation NSNull (Cycript)
1021
1022 - (JSType) cy$JSType {
1023     return kJSTypeNull;
1024 }
1025
1026 - (NSString *) cy$toCYON:(bool)objective {
1027     NSString *value(@"null");
1028     return objective ? value : [NSString stringWithFormat:@"@%@", value];
1029 }
1030
1031 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_(context) {
1032     return CYJSNull(context);
1033 } CYObjectiveCatch }
1034
1035 @end
1036 /* }}} */
1037 /* Bridge: NSObject {{{ */
1038 @implementation NSObject (Cycript)
1039
1040 - (id) cy$box {
1041     return self;
1042 }
1043
1044 - (JSValueRef) cy$toJSON:(NSString *)key inContext:(JSContextRef)context {
1045     return [self cy$valueOfInContext:context];
1046 }
1047
1048 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_(context) {
1049     return NULL;
1050 } CYObjectiveCatch }
1051
1052 - (JSType) cy$JSType {
1053     return kJSTypeObject;
1054 }
1055
1056 - (NSString *) cy$toCYON:(bool)objective {
1057     return [[self description] cy$toCYON:objective];
1058 }
1059
1060 - (bool) cy$hasProperty:(NSString *)name {
1061     return false;
1062 }
1063
1064 - (NSObject *) cy$getProperty:(NSString *)name {
1065     return nil;
1066 }
1067
1068 - (JSValueRef) cy$getProperty:(NSString *)name inContext:(JSContextRef)context { CYObjectiveTry_(context) {
1069     if (NSObject *value = [self cy$getProperty:name])
1070         return CYCastJSValue(context, value);
1071     return NULL;
1072 } CYObjectiveCatch }
1073
1074 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
1075     return false;
1076 }
1077
1078 - (bool) cy$deleteProperty:(NSString *)name {
1079     return false;
1080 }
1081
1082 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
1083 }
1084
1085 + (bool) cy$hasImplicitProperties {
1086     return true;
1087 }
1088
1089 @end
1090 /* }}} */
1091 /* Bridge: NSProxy {{{ */
1092 @implementation NSProxy (Cycript)
1093
1094 - (NSString *) cy$toCYON:(bool)objective {
1095     return [[self description] cy$toCYON:objective];
1096 }
1097
1098 @end
1099 /* }}} */
1100 /* Bridge: NSString {{{ */
1101 @implementation NSString (Cycript)
1102
1103 - (id) cy$box {
1104     return [[self copy] autorelease];
1105 }
1106
1107 - (JSType) cy$JSType {
1108     return kJSTypeString;
1109 }
1110
1111 - (NSString *) cy$toCYON:(bool)objective {
1112     std::ostringstream str;
1113     if (!objective)
1114         str << '@';
1115     CYUTF8String string(CYCastUTF8String(self));
1116     CYStringify(str, string.data, string.size);
1117     std::string value(str.str());
1118     return CYCastNSString(NULL, CYUTF8String(value.c_str(), value.size()));
1119 }
1120
1121 - (bool) cy$hasProperty:(NSString *)name {
1122     size_t index(CYGetIndex(name));
1123     if (index == _not(size_t) || index >= [self length])
1124         return [super cy$hasProperty:name];
1125     else
1126         return true;
1127 }
1128
1129 - (NSObject *) cy$getProperty:(NSString *)name {
1130     size_t index(CYGetIndex(name));
1131     if (index == _not(size_t) || index >= [self length])
1132         return [super cy$getProperty:name];
1133     else
1134         return [self substringWithRange:NSMakeRange(index, 1)];
1135 }
1136
1137 - (void) cy$getPropertyNames:(JSPropertyNameAccumulatorRef)names inContext:(JSContextRef)context {
1138     [super cy$getPropertyNames:names inContext:context];
1139
1140     for (size_t index(0), length([self length]); index != length; ++index) {
1141         char name[32];
1142         sprintf(name, "%zu", index);
1143         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1144     }
1145 }
1146
1147 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_(context) {
1148     return CYCastJSValue(context, CYJSString(context, self));
1149 } CYObjectiveCatch }
1150
1151 @end
1152 /* }}} */
1153 /* Bridge: WebUndefined {{{ */
1154 @implementation WebUndefined (Cycript)
1155
1156 - (JSType) cy$JSType {
1157     return kJSTypeUndefined;
1158 }
1159
1160 - (NSString *) cy$toCYON:(bool)objective {
1161     NSString *value(@"undefined");
1162     return value; // XXX: maybe use the below code, adding @undefined?
1163     //return objective ? value : [NSString stringWithFormat:@"@%@", value];
1164 }
1165
1166 - (JSValueRef) cy$valueOfInContext:(JSContextRef)context { CYObjectiveTry_(context) {
1167     return CYJSUndefined(context);
1168 } CYObjectiveCatch }
1169
1170 @end
1171 /* }}} */
1172
1173 static bool CYIsClass(id self) {
1174 #ifdef __APPLE__
1175     return class_isMetaClass(object_getClass(self));
1176 #else
1177     return GSObjCIsClass(self);
1178 #endif
1179 }
1180
1181 Class CYCastClass(CYPool &pool, JSContextRef context, JSValueRef value) {
1182     id self(CYCastNSObject(&pool, context, value));
1183     if (CYIsClass(self))
1184         return (Class) self;
1185     throw CYJSError(context, "got something that is not a Class");
1186     return NULL;
1187 }
1188
1189 NSArray *CYCastNSArray(JSContextRef context, JSPropertyNameArrayRef names) {
1190     CYPool pool;
1191     size_t size(JSPropertyNameArrayGetCount(names));
1192     NSMutableArray *array([NSMutableArray arrayWithCapacity:size]);
1193     for (size_t index(0); index != size; ++index)
1194         [array addObject:CYCastNSString(&pool, context, JSPropertyNameArrayGetNameAtIndex(names, index))];
1195     return array;
1196 }
1197
1198 JSValueRef CYCastJSValue(JSContextRef context, NSObject *value) { CYPoolTry {
1199     if (value == nil)
1200         return CYJSNull(context);
1201     else
1202         return CYMakeInstance(context, value, false);
1203 } CYPoolCatch(NULL) return /*XXX*/ NULL; }
1204
1205 @implementation CYJSObject
1206
1207 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context { CYObjectiveTry {
1208     if ((self = [super init]) != nil) {
1209         object_ = object;
1210         context_ = CYGetJSContext(context);
1211         JSGlobalContextRetain(context_);
1212         JSValueProtect(context_, object_);
1213     } return self;
1214 } CYObjectiveCatch }
1215
1216 - (void) dealloc { CYObjectiveTry {
1217     JSValueUnprotect(context_, object_);
1218     JSGlobalContextRelease(context_);
1219     [super dealloc];
1220 } CYObjectiveCatch }
1221
1222 - (NSString *) cy$toCYON:(bool)objective { CYObjectiveTry {
1223     CYPool pool;
1224     const char *cyon(CYPoolCCYON(pool, context_, object_));
1225     if (cyon == NULL)
1226         return [super cy$toCYON:objective];
1227     else
1228         return [NSString stringWithUTF8String:cyon];
1229 } CYObjectiveCatch }
1230
1231 - (NSUInteger) count { CYObjectiveTry {
1232     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context_, object_));
1233     size_t size(JSPropertyNameArrayGetCount(names));
1234     JSPropertyNameArrayRelease(names);
1235     return size;
1236 } CYObjectiveCatch }
1237
1238 - (id) objectForKey:(id)key { CYObjectiveTry {
1239     JSValueRef value(CYGetProperty(context_, object_, CYJSString(context_, (NSObject *) key)));
1240     if (JSValueIsUndefined(context_, value))
1241         return nil;
1242     return CYCastNSObject(NULL, context_, value) ?: [NSNull null];
1243 } CYObjectiveCatch }
1244
1245 - (NSEnumerator *) keyEnumerator { CYObjectiveTry {
1246     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context_, object_));
1247     NSEnumerator *enumerator([CYCastNSArray(context_, names) objectEnumerator]);
1248     JSPropertyNameArrayRelease(names);
1249     return enumerator;
1250 } CYObjectiveCatch }
1251
1252 - (void) setObject:(id)object forKey:(id)key { CYObjectiveTry {
1253     CYSetProperty(context_, object_, CYJSString(context_, (NSObject *) key), CYCastJSValue(context_, (NSString *) object));
1254 } CYObjectiveCatch }
1255
1256 - (void) removeObjectForKey:(id)key { CYObjectiveTry {
1257     JSValueRef exception(NULL);
1258     (void) JSObjectDeleteProperty(context_, object_, CYJSString(context_, (NSObject *) key), &exception);
1259     CYThrow(context_, exception);
1260 } CYObjectiveCatch }
1261
1262 @end
1263
1264 @implementation CYJSArray
1265
1266 - (NSString *) cy$toCYON:(bool)objective {
1267     CYPool pool;
1268     return [NSString stringWithUTF8String:CYPoolCCYON(pool, context_, object_)];
1269 }
1270
1271 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context { CYObjectiveTry {
1272     if ((self = [super init]) != nil) {
1273         object_ = object;
1274         context_ = CYGetJSContext(context);
1275         JSGlobalContextRetain(context_);
1276         JSValueProtect(context_, object_);
1277     } return self;
1278 } CYObjectiveCatch }
1279
1280 - (void) dealloc { CYObjectiveTry {
1281     JSValueUnprotect(context_, object_);
1282     JSGlobalContextRelease(context_);
1283     [super dealloc];
1284 } CYObjectiveCatch }
1285
1286 - (NSUInteger) count { CYObjectiveTry {
1287     return CYArrayLength(context_, object_);
1288 } CYObjectiveCatch }
1289
1290 - (id) objectAtIndex:(NSUInteger)index { CYObjectiveTry {
1291     size_t bounds([self count]);
1292     if (index >= bounds)
1293         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray objectAtIndex:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1294     JSValueRef exception(NULL);
1295     JSValueRef value(JSObjectGetPropertyAtIndex(context_, object_, index, &exception));
1296     CYThrow(context_, exception);
1297     return CYCastNSObject(NULL, context_, value) ?: [NSNull null];
1298 } CYObjectiveCatch }
1299
1300 - (void) addObject:(id)object { CYObjectiveTry {
1301     CYArrayPush(context_, object_, CYCastJSValue(context_, (NSObject *) object));
1302 } CYObjectiveCatch }
1303
1304 - (void) insertObject:(id)object atIndex:(NSUInteger)index { CYObjectiveTry {
1305     size_t bounds([self count] + 1);
1306     if (index >= bounds)
1307         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray insertObject:atIndex:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1308     JSValueRef exception(NULL);
1309     JSValueRef arguments[3];
1310     arguments[0] = CYCastJSValue(context_, index);
1311     arguments[1] = CYCastJSValue(context_, 0);
1312     arguments[2] = CYCastJSValue(context_, (NSObject *) object);
1313     JSObjectRef Array(CYGetCachedObject(context_, CYJSString("Array_prototype")));
1314     JSObjectCallAsFunction(context_, CYCastJSObject(context_, CYGetProperty(context_, Array, splice_s)), object_, 3, arguments, &exception);
1315     CYThrow(context_, exception);
1316 } CYObjectiveCatch }
1317
1318 - (void) removeLastObject { CYObjectiveTry {
1319     JSValueRef exception(NULL);
1320     JSObjectRef Array(CYGetCachedObject(context_, CYJSString("Array_prototype")));
1321     JSObjectCallAsFunction(context_, CYCastJSObject(context_, CYGetProperty(context_, Array, pop_s)), object_, 0, NULL, &exception);
1322     CYThrow(context_, exception);
1323 } CYObjectiveCatch }
1324
1325 - (void) removeObjectAtIndex:(NSUInteger)index { CYObjectiveTry {
1326     size_t bounds([self count]);
1327     if (index >= bounds)
1328         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray removeObjectAtIndex:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1329     JSValueRef exception(NULL);
1330     JSValueRef arguments[2];
1331     arguments[0] = CYCastJSValue(context_, index);
1332     arguments[1] = CYCastJSValue(context_, 1);
1333     JSObjectRef Array(CYGetCachedObject(context_, CYJSString("Array_prototype")));
1334     JSObjectCallAsFunction(context_, CYCastJSObject(context_, CYGetProperty(context_, Array, splice_s)), object_, 2, arguments, &exception);
1335     CYThrow(context_, exception);
1336 } CYObjectiveCatch }
1337
1338 - (void) replaceObjectAtIndex:(NSUInteger)index withObject:(id)object { CYObjectiveTry {
1339     size_t bounds([self count]);
1340     if (index >= bounds)
1341         @throw [NSException exceptionWithName:NSRangeException reason:[NSString stringWithFormat:@"*** -[CYJSArray replaceObjectAtIndex:withObject:]: index (%zu) beyond bounds (%zu)", static_cast<size_t>(index), bounds] userInfo:nil];
1342     CYSetProperty(context_, object_, index, CYCastJSValue(context_, (NSObject *) object));
1343 } CYObjectiveCatch }
1344
1345 @end
1346
1347 // XXX: inherit from or replace with CYJSObject
1348 @interface CYInternal : NSObject {
1349     JSGlobalContextRef context_;
1350     JSObjectRef object_;
1351 }
1352
1353 @end
1354
1355 @implementation CYInternal
1356
1357 - (void) dealloc {
1358     JSValueUnprotect(context_, object_);
1359     JSGlobalContextRelease(context_);
1360     [super dealloc];
1361 }
1362
1363 - (id) initInContext:(JSContextRef)context {
1364     if ((self = [super init]) != nil) {
1365         context_ = CYGetJSContext(context);
1366         JSGlobalContextRetain(context_);
1367     } return self;
1368 }
1369
1370 - (bool) hasProperty:(JSStringRef)name inContext:(JSContextRef)context {
1371     if (object_ == NULL)
1372         return false;
1373
1374     return JSObjectHasProperty(context, object_, name);
1375 }
1376
1377 - (JSValueRef) getProperty:(JSStringRef)name inContext:(JSContextRef)context {
1378     if (object_ == NULL)
1379         return NULL;
1380
1381     return CYGetProperty(context, object_, name);
1382 }
1383
1384 - (void) setProperty:(JSStringRef)name toValue:(JSValueRef)value inContext:(JSContextRef)context {
1385     @synchronized (self) {
1386         if (object_ == NULL) {
1387             object_ = JSObjectMake(context, NULL, NULL);
1388             JSValueProtect(context, object_);
1389         }
1390     }
1391
1392     CYSetProperty(context, object_, name, value);
1393 }
1394
1395 + (CYInternal *) get:(id)object {
1396     if ($objc_getAssociatedObject == NULL)
1397         return nil;
1398
1399     @synchronized (object) {
1400         if (CYInternal *internal = $objc_getAssociatedObject(object, @selector(cy$internal)))
1401             return internal;
1402     }
1403
1404     return nil;
1405 }
1406
1407 + (CYInternal *) set:(id)object inContext:(JSContextRef)context {
1408     if ($objc_getAssociatedObject == NULL)
1409         return nil;
1410
1411     @synchronized (object) {
1412         if (CYInternal *internal = $objc_getAssociatedObject(object, @selector(cy$internal)))
1413             return internal;
1414
1415         if ($objc_setAssociatedObject == NULL)
1416             return nil;
1417
1418         CYInternal *internal([[[CYInternal alloc] initInContext:context] autorelease]);
1419         objc_setAssociatedObject(object, @selector(cy$internal), internal, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
1420         return internal;
1421     }
1422
1423     return nil;
1424 }
1425
1426 @end
1427
1428 static JSObjectRef CYMakeSelector(JSContextRef context, SEL sel) {
1429     Selector_privateData *internal(new Selector_privateData(sel));
1430     return JSObjectMake(context, Selector_, internal);
1431 }
1432
1433 static SEL CYCastSEL(JSContextRef context, JSValueRef value) {
1434     if (JSValueIsObjectOfClass(context, value, Selector_)) {
1435         Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate((JSObjectRef) value)));
1436         return reinterpret_cast<SEL>(internal->value_);
1437     } else
1438         return CYCastPointer<SEL>(context, value);
1439 }
1440
1441 void *CYObjectiveC_ExecuteStart(JSContextRef context) { CYSadTry {
1442     return (void *) [[NSAutoreleasePool alloc] init];
1443 } CYSadCatch(NULL) }
1444
1445 void CYObjectiveC_ExecuteEnd(JSContextRef context, void *handle) { CYSadTry {
1446     return [(NSAutoreleasePool *) handle release];
1447 } CYSadCatch() }
1448
1449 JSValueRef CYObjectiveC_RuntimeProperty(JSContextRef context, CYUTF8String name) { CYPoolTry {
1450     if (name == "nil")
1451         return Instance::Make(context, nil);
1452     if (Class _class = objc_getClass(name.data))
1453         return CYMakeInstance(context, _class, true);
1454     if (Protocol *protocol = objc_getProtocol(name.data))
1455         return CYMakeInstance(context, protocol, true);
1456     return NULL;
1457 } CYPoolCatch(NULL) return /*XXX*/ NULL; }
1458
1459 static void CYObjectiveC_CallFunction(JSContextRef context, ffi_cif *cif, void (*function)(), uint8_t *value, void **values) { CYSadTry {
1460     ffi_call(cif, function, value, values);
1461 } CYSadCatch() }
1462
1463 static bool CYObjectiveC_PoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) { CYSadTry {
1464     switch (type->primitive) {
1465         // XXX: do something epic about blocks
1466         case sig::block_P:
1467         case sig::object_P:
1468         case sig::typename_P:
1469             // XXX: this works for return values, but not for properties and fields
1470             *reinterpret_cast<id *>(data) = CYCastNSObject(pool, context, value);
1471         break;
1472
1473         case sig::selector_P:
1474             *reinterpret_cast<SEL *>(data) = CYCastSEL(context, value);
1475         break;
1476
1477         default:
1478             return false;
1479     }
1480
1481     return true;
1482 } CYSadCatch(false) }
1483
1484 static JSValueRef CYObjectiveC_FromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) { CYPoolTry {
1485     switch (type->primitive) {
1486         // XXX: do something epic about blocks
1487         case sig::block_P:
1488         case sig::object_P:
1489             if (NSObject *object = *reinterpret_cast<NSObject **>(data)) {
1490                 JSValueRef value(CYCastJSValue(context, object));
1491                 if (initialize)
1492                     [object release];
1493                 return value;
1494             } else goto null;
1495
1496         case sig::typename_P:
1497             return CYMakeInstance(context, *reinterpret_cast<Class *>(data), true);
1498
1499         case sig::selector_P:
1500             if (SEL sel = *reinterpret_cast<SEL *>(data))
1501                 return CYMakeSelector(context, sel);
1502             else goto null;
1503
1504         null:
1505             return CYJSNull(context);
1506         default:
1507             return NULL;
1508     }
1509 } CYPoolCatch(NULL) return /*XXX*/ NULL; }
1510
1511 static bool CYImplements(id object, Class _class, SEL selector, bool devoid = false) {
1512     if (objc_method *method = class_getInstanceMethod(_class, selector)) {
1513         if (!devoid)
1514             return true;
1515 #if OBJC_API_VERSION >= 2
1516         char type[16];
1517         method_getReturnType(method, type, sizeof(type));
1518 #else
1519         const char *type(method_getTypeEncoding(method));
1520 #endif
1521         if (type[0] != 'v')
1522             return true;
1523     }
1524
1525     // XXX: possibly use a more "awesome" check?
1526     return false;
1527 }
1528
1529 static const char *CYPoolTypeEncoding(CYPool &pool, JSContextRef context, SEL sel, objc_method *method) {
1530     if (method != NULL)
1531         return method_getTypeEncoding(method);
1532
1533     const char *name(sel_getName(sel));
1534     size_t length(strlen(name));
1535
1536     char keyed[length + 2];
1537     keyed[0] = '6';
1538     keyed[length + 1] = '\0';
1539     memcpy(keyed + 1, name, length);
1540
1541     if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1542         return entry->value_;
1543
1544     return NULL;
1545 }
1546
1547 static JSValueRef MessageAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
1548     JSObjectRef _this(CYCastJSObject(context, values[0]));
1549     return CYCallAsFunction(context, function, _this, count - 2, values + 2);
1550 }
1551
1552 static void MessageClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
1553     CYExecuteClosure(cif, result, arguments, arg, &MessageAdapter_);
1554 }
1555
1556 static JSObjectRef CYMakeMessage(JSContextRef context, SEL sel, IMP imp, const char *type) {
1557     Message_privateData *internal(new Message_privateData(sel, type, imp));
1558     return JSObjectMake(context, Message_, internal);
1559 }
1560
1561 static IMP CYMakeMessage(JSContextRef context, JSValueRef value, const char *type) {
1562     JSObjectRef function(CYCastJSObject(context, value));
1563     Closure_privateData *internal(CYMakeFunctor_(context, function, type, &MessageClosure_));
1564     // XXX: see notes in Library.cpp about needing to leak
1565     return reinterpret_cast<IMP>(internal->GetValue());
1566 }
1567
1568 static bool Messages_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1569     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1570     Class _class(internal->GetValue());
1571
1572     CYPool pool;
1573     const char *name(CYPoolCString(pool, context, property));
1574
1575     if (SEL sel = sel_getUid(name))
1576         if (class_getInstanceMethod(_class, sel) != NULL)
1577             return true;
1578
1579     return false;
1580 }
1581
1582 static JSValueRef Messages_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1583     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1584     Class _class(internal->GetValue());
1585
1586     CYPool pool;
1587     const char *name(CYPoolCString(pool, context, property));
1588
1589     if (SEL sel = sel_getUid(name))
1590         if (objc_method *method = class_getInstanceMethod(_class, sel))
1591             return CYMakeMessage(context, sel, method_getImplementation(method), method_getTypeEncoding(method));
1592
1593     return NULL;
1594 } CYCatch(NULL) }
1595
1596 static bool Messages_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1597     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1598     Class _class(internal->GetValue());
1599
1600     CYPool pool;
1601     const char *name(CYPoolCString(pool, context, property));
1602
1603     SEL sel(sel_registerName(name));
1604
1605     objc_method *method(class_getInstanceMethod(_class, sel));
1606
1607     const char *type;
1608     IMP imp;
1609
1610     if (JSValueIsObjectOfClass(context, value, Message_)) {
1611         Message_privateData *message(reinterpret_cast<Message_privateData *>(JSObjectGetPrivate((JSObjectRef) value)));
1612         type = sig::Unparse(pool, &message->signature_);
1613         imp = reinterpret_cast<IMP>(message->GetValue());
1614     } else {
1615         type = CYPoolTypeEncoding(pool, context, sel, method);
1616         imp = CYMakeMessage(context, value, type);
1617     }
1618
1619     if (method != NULL)
1620         method_setImplementation(method, imp);
1621     else {
1622 #ifdef GNU_RUNTIME
1623         GSMethodList list(GSAllocMethodList(1));
1624         GSAppendMethodToList(list, sel, type, imp, YES);
1625         GSAddMethodList(_class, list, YES);
1626         GSFlushMethodCacheForClass(_class);
1627 #else
1628         class_addMethod(_class, sel, imp, type);
1629 #endif
1630     }
1631
1632     return true;
1633 } CYCatch(false) }
1634
1635 #if 0 && OBJC_API_VERSION < 2
1636 static bool Messages_deleteProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1637     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1638     Class _class(internal->GetValue());
1639
1640     CYPool pool;
1641     const char *name(CYPoolCString(pool, context, property));
1642
1643     if (SEL sel = sel_getUid(name))
1644         if (objc_method *method = class_getInstanceMethod(_class, sel)) {
1645             objc_method_list list = {NULL, 1, {method}};
1646             class_removeMethods(_class, &list);
1647             return true;
1648         }
1649
1650     return false;
1651 } CYCatch(false) }
1652 #endif
1653
1654 static void Messages_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1655     Messages *internal(reinterpret_cast<Messages *>(JSObjectGetPrivate(object)));
1656     Class _class(internal->GetValue());
1657
1658 #if OBJC_API_VERSION >= 2
1659     unsigned int size;
1660     objc_method **data(class_copyMethodList(_class, &size));
1661     for (size_t i(0); i != size; ++i)
1662         JSPropertyNameAccumulatorAddName(names, CYJSString(sel_getName(method_getName(data[i]))));
1663     free(data);
1664 #else
1665     for (objc_method_list *methods(_class->methods); methods != NULL; methods = methods->method_next)
1666         for (int i(0); i != methods->method_count; ++i)
1667             JSPropertyNameAccumulatorAddName(names, CYJSString(sel_getName(method_getName(&methods->method_list[i]))));
1668 #endif
1669 }
1670
1671 static bool CYHasImplicitProperties(Class _class) {
1672     // XXX: this is an evil hack to deal with NSProxy; fix elsewhere
1673     if (!CYImplements(_class, object_getClass(_class), @selector(cy$hasImplicitProperties)))
1674         return true;
1675     return [_class cy$hasImplicitProperties];
1676 }
1677
1678 static bool Instance_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1679     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1680     id self(internal->GetValue());
1681
1682     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1683         return true;
1684
1685     CYPool pool;
1686     NSString *name(CYCastNSString(&pool, context, property));
1687
1688     if (CYInternal *internal = [CYInternal get:self])
1689         if ([internal hasProperty:property inContext:context])
1690             return true;
1691
1692     Class _class(object_getClass(self));
1693
1694     CYPoolTry {
1695         // XXX: this is an evil hack to deal with NSProxy; fix elsewhere
1696         if (CYImplements(self, _class, @selector(cy$hasProperty:)))
1697             if ([self cy$hasProperty:name])
1698                 return true;
1699     } CYPoolCatch(false)
1700
1701     const char *string(CYPoolCString(pool, context, name));
1702
1703 #ifdef __APPLE__
1704     if (class_getProperty(_class, string) != NULL)
1705         return true;
1706 #endif
1707
1708     if (CYHasImplicitProperties(_class))
1709         if (SEL sel = sel_getUid(string))
1710             if (CYImplements(self, _class, sel, true))
1711                 return true;
1712
1713     return false;
1714 }
1715
1716 static JSValueRef Instance_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1717     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1718     id self(internal->GetValue());
1719
1720     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1721         return Internal::Make(context, self, object);
1722
1723     CYPool pool;
1724     NSString *name(CYCastNSString(&pool, context, property));
1725
1726     if (CYInternal *internal = [CYInternal get:self])
1727         if (JSValueRef value = [internal getProperty:property inContext:context])
1728             return value;
1729
1730     CYPoolTry {
1731         if (JSValueRef value = [self cy$getProperty:name inContext:context])
1732             return value;
1733     } CYPoolCatch(NULL)
1734
1735     const char *string(CYPoolCString(pool, context, name));
1736     Class _class(object_getClass(self));
1737
1738 #ifdef __APPLE__
1739     if (objc_property_t property = class_getProperty(_class, string)) {
1740         PropertyAttributes attributes(property);
1741         SEL sel(sel_registerName(attributes.Getter()));
1742         return CYSendMessage(pool, context, self, NULL, sel, 0, NULL, false, exception);
1743     }
1744 #endif
1745
1746     if (CYHasImplicitProperties(_class))
1747         if (SEL sel = sel_getUid(string))
1748             if (CYImplements(self, _class, sel, true))
1749                 return CYSendMessage(pool, context, self, NULL, sel, 0, NULL, false, exception);
1750
1751     return NULL;
1752 } CYCatch(NULL) }
1753
1754 static bool Instance_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1755     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1756     id self(internal->GetValue());
1757
1758     CYPool pool;
1759
1760     NSString *name(CYCastNSString(&pool, context, property));
1761     NSObject *data(CYCastNSObject(&pool, context, value));
1762
1763     CYPoolTry {
1764         if ([self cy$setProperty:name to:data])
1765             return true;
1766     } CYPoolCatch(false)
1767
1768     const char *string(CYPoolCString(pool, context, name));
1769     Class _class(object_getClass(self));
1770
1771 #ifdef __APPLE__
1772     if (objc_property_t property = class_getProperty(_class, string)) {
1773         PropertyAttributes attributes(property);
1774         if (const char *setter = attributes.Setter()) {
1775             SEL sel(sel_registerName(setter));
1776             JSValueRef arguments[1] = {value};
1777             CYSendMessage(pool, context, self, NULL, sel, 1, arguments, false, exception);
1778             return true;
1779         }
1780     }
1781 #endif
1782
1783     size_t length(strlen(string));
1784
1785     char set[length + 5];
1786
1787     set[0] = 's';
1788     set[1] = 'e';
1789     set[2] = 't';
1790
1791     if (string[0] != '\0') {
1792         set[3] = toupper(string[0]);
1793         memcpy(set + 4, string + 1, length - 1);
1794     }
1795
1796     set[length + 3] = ':';
1797     set[length + 4] = '\0';
1798
1799     if (SEL sel = sel_getUid(set))
1800         if (CYImplements(self, _class, sel)) {
1801             JSValueRef arguments[1] = {value};
1802             CYSendMessage(pool, context, self, NULL, sel, 1, arguments, false, exception);
1803             return true;
1804         }
1805
1806     if (CYInternal *internal = [CYInternal set:self inContext:context]) {
1807         [internal setProperty:property toValue:value inContext:context];
1808         return true;
1809     }
1810
1811     return false;
1812 } CYCatch(false) }
1813
1814 static bool Instance_deleteProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1815     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1816     id self(internal->GetValue());
1817
1818     CYPoolTry {
1819         NSString *name(CYCastNSString(NULL, context, property));
1820         return [self cy$deleteProperty:name];
1821     } CYPoolCatch(false)
1822 } CYCatch(false) return /*XXX*/ false; }
1823
1824 static void Instance_getPropertyNames_message(JSPropertyNameAccumulatorRef names, objc_method *method) {
1825     const char *name(sel_getName(method_getName(method)));
1826     if (strchr(name, ':') != NULL)
1827         return;
1828
1829     const char *type(method_getTypeEncoding(method));
1830     if (type == NULL || *type == '\0' || *type == 'v')
1831         return;
1832
1833     JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1834 }
1835
1836 static void Instance_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1837     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1838     id self(internal->GetValue());
1839
1840     CYPool pool;
1841     Class _class(object_getClass(self));
1842
1843 #ifdef __APPLE__
1844     {
1845         unsigned int size;
1846         objc_property_t *data(class_copyPropertyList(_class, &size));
1847         for (size_t i(0); i != size; ++i)
1848             JSPropertyNameAccumulatorAddName(names, CYJSString(property_getName(data[i])));
1849         free(data);
1850     }
1851 #endif
1852
1853     if (CYHasImplicitProperties(_class))
1854         for (Class current(_class); current != nil; current = class_getSuperclass(current)) {
1855 #if OBJC_API_VERSION >= 2
1856             unsigned int size;
1857             objc_method **data(class_copyMethodList(current, &size));
1858             for (size_t i(0); i != size; ++i)
1859                 Instance_getPropertyNames_message(names, data[i]);
1860             free(data);
1861 #else
1862             for (objc_method_list *methods(current->methods); methods != NULL; methods = methods->method_next)
1863                 for (int i(0); i != methods->method_count; ++i)
1864                     Instance_getPropertyNames_message(names, &methods->method_list[i]);
1865 #endif
1866         }
1867
1868     CYPoolTry {
1869         // XXX: this is an evil hack to deal with NSProxy; fix elsewhere
1870         if (CYImplements(self, _class, @selector(cy$getPropertyNames:inContext:)))
1871             [self cy$getPropertyNames:names inContext:context];
1872     } CYPoolCatch()
1873 }
1874
1875 static JSObjectRef Instance_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1876     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1877     JSObjectRef value(Instance::Make(context, [internal->GetValue() alloc], Instance::Uninitialized));
1878     return value;
1879 } CYCatch(NULL) }
1880
1881 static JSValueRef Instance_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1882     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
1883     id self(internal->GetValue());
1884
1885     if (![self isKindOfClass:NSBlock_])
1886         CYThrow("non-NSBlock object is not a function");
1887     // XXX: replace above logic with the following assertion
1888     //_assert([self isKindOfClass:NSBlock_]);
1889     // to do this, make it so FunctionInstance_ is the class of blocks
1890     // to do /that/, generalize the various "is exactly Instance_" checks
1891     // then, move Instance_callAsFunction to only be on FunctionInstance
1892
1893     BlockLiteral *literal(reinterpret_cast<BlockLiteral *>(self));
1894
1895     if ((literal->flags & BLOCK_HAS_SIGNATURE) != 0) {
1896         uint8_t *descriptor(reinterpret_cast<uint8_t *>(literal->descriptor));
1897         descriptor += sizeof(BlockDescriptor1);
1898         if ((literal->flags & BLOCK_HAS_COPY_DISPOSE) != 0)
1899             descriptor += sizeof(BlockDescriptor2);
1900         BlockDescriptor3 *descriptor3(reinterpret_cast<BlockDescriptor3 *>(descriptor));
1901
1902         if (const char *type = descriptor3->signature) {
1903             CYPool pool;
1904
1905             void *setup[1];
1906             setup[0] = &self;
1907
1908             sig::Signature signature;
1909             sig::Parse(pool, &signature, type, &Structor_);
1910
1911             ffi_cif cif;
1912             sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1913
1914             void (*function)() = reinterpret_cast<void (*)()>(literal->invoke);
1915             return CYCallFunction(pool, context, 1, setup, count, arguments, false, exception, &signature, &cif, function);
1916         }
1917     }
1918
1919     if (count != 0)
1920         CYThrow("NSBlock without signature field passed arguments");
1921
1922     CYPoolTry {
1923         [self invoke];
1924     } CYPoolCatch(NULL);
1925
1926     return NULL;
1927 } CYCatch(NULL) }
1928
1929 static bool Instance_hasInstance(JSContextRef context, JSObjectRef constructor, JSValueRef instance, JSValueRef *exception) { CYTry {
1930     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate((JSObjectRef) constructor)));
1931     Class _class(internal->GetValue());
1932     if (!CYIsClass(_class))
1933         return false;
1934
1935     if (CYJSValueIsNSObject(context, instance)) {
1936         Instance *linternal(reinterpret_cast<Instance *>(JSObjectGetPrivate((JSObjectRef) instance)));
1937         // XXX: this isn't always safe
1938         return [linternal->GetValue() isKindOfClass:_class];
1939     }
1940
1941     return false;
1942 } CYCatch(false) }
1943
1944 static JSValueRef Instance_box_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1945     if (count == 0)
1946         throw CYJSError(context, "incorrect number of arguments to Instance");
1947     CYPool pool;
1948     id value(CYCastNSObject(&pool, context, arguments[0]));
1949     if (value == nil)
1950         value = [NSNull null];
1951     return CYCastJSValue(context, [value cy$box]);
1952 } CYCatch(NULL) }
1953
1954 static bool Internal_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1955     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
1956     CYPool pool;
1957
1958     id self(internal->GetValue());
1959     const char *name(CYPoolCString(pool, context, property));
1960
1961     if (object_getInstanceVariable(self, name, NULL) != NULL)
1962         return true;
1963
1964     return false;
1965 }
1966
1967 static JSValueRef Internal_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1968     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
1969     CYPool pool;
1970
1971     id self(internal->GetValue());
1972     const char *name(CYPoolCString(pool, context, property));
1973
1974 #ifdef __arm64__
1975     if (strcmp(name, "isa") == 0)
1976         return CYCastJSValue(context, object_getClass(self));
1977 #endif
1978
1979     if (objc_ivar *ivar = object_getInstanceVariable(self, name, NULL)) {
1980         Type_privateData type(pool, ivar_getTypeEncoding(ivar));
1981         // XXX: if this fails and throws an exception the person we are throwing it to gets the wrong exception
1982         return CYFromFFI(context, type.type_, type.GetFFI(), reinterpret_cast<uint8_t *>(self) + ivar_getOffset(ivar));
1983     }
1984
1985     return NULL;
1986 } CYCatch(NULL) }
1987
1988 static bool Internal_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1989     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
1990     CYPool pool;
1991
1992     id self(internal->GetValue());
1993     const char *name(CYPoolCString(pool, context, property));
1994
1995     if (objc_ivar *ivar = object_getInstanceVariable(self, name, NULL)) {
1996         Type_privateData type(pool, ivar_getTypeEncoding(ivar));
1997         CYPoolFFI(&pool, context, type.type_, type.GetFFI(), reinterpret_cast<uint8_t *>(self) + ivar_getOffset(ivar), value);
1998         return true;
1999     }
2000
2001     return false;
2002 } CYCatch(false) }
2003
2004 static void Internal_getPropertyNames_(Class _class, JSPropertyNameAccumulatorRef names) {
2005     if (Class super = class_getSuperclass(_class))
2006         Internal_getPropertyNames_(super, names);
2007
2008 #if OBJC_API_VERSION >= 2
2009     unsigned int size;
2010     objc_ivar **data(class_copyIvarList(_class, &size));
2011     for (size_t i(0); i != size; ++i)
2012         JSPropertyNameAccumulatorAddName(names, CYJSString(ivar_getName(data[i])));
2013     free(data);
2014 #else
2015     if (objc_ivar_list *ivars = _class->ivars)
2016         for (int i(0); i != ivars->ivar_count; ++i)
2017             JSPropertyNameAccumulatorAddName(names, CYJSString(ivar_getName(&ivars->ivar_list[i])));
2018 #endif
2019 }
2020
2021 static void Internal_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2022     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
2023     CYPool pool;
2024
2025     id self(internal->GetValue());
2026     Class _class(object_getClass(self));
2027
2028     Internal_getPropertyNames_(_class, names);
2029 }
2030
2031 static JSValueRef Internal_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2032     Internal *internal(reinterpret_cast<Internal *>(JSObjectGetPrivate(object)));
2033     return internal->GetOwner();
2034 } CYCatch(NULL) }
2035
2036 static JSValueRef ObjectiveC_Classes_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2037     CYPool pool;
2038     NSString *name(CYCastNSString(&pool, context, property));
2039     if (Class _class = NSClassFromString(name))
2040         return CYMakeInstance(context, _class, true);
2041     return NULL;
2042 } CYCatch(NULL) }
2043
2044 static void ObjectiveC_Classes_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2045 #ifdef __APPLE__
2046     size_t size(objc_getClassList(NULL, 0));
2047     Class *data(reinterpret_cast<Class *>(malloc(sizeof(Class) * size)));
2048
2049   get:
2050     size_t writ(objc_getClassList(data, size));
2051     if (size < writ) {
2052         size = writ;
2053         if (Class *copy = reinterpret_cast<Class *>(realloc(data, sizeof(Class) * writ))) {
2054             data = copy;
2055             goto get;
2056         } else goto done;
2057     }
2058
2059     for (size_t i(0); i != writ; ++i)
2060         JSPropertyNameAccumulatorAddName(names, CYJSString(class_getName(data[i])));
2061
2062   done:
2063     free(data);
2064 #else
2065     void *state(NULL);
2066     while (Class _class = objc_next_class(&state))
2067         JSPropertyNameAccumulatorAddName(names, CYJSString(class_getName(_class)));
2068 #endif
2069 }
2070
2071 #if OBJC_API_VERSION >= 2
2072 static JSValueRef ObjectiveC_Image_Classes_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2073     const char *internal(reinterpret_cast<const char *>(JSObjectGetPrivate(object)));
2074
2075     CYPool pool;
2076     const char *name(CYPoolCString(pool, context, property));
2077     unsigned int size;
2078     const char **data(objc_copyClassNamesForImage(internal, &size));
2079     JSValueRef value;
2080     for (size_t i(0); i != size; ++i)
2081         if (strcmp(name, data[i]) == 0) {
2082             if (Class _class = objc_getClass(name)) {
2083                 value = CYMakeInstance(context, _class, true);
2084                 goto free;
2085             } else
2086                 break;
2087         }
2088     value = NULL;
2089   free:
2090     free(data);
2091     return value;
2092 } CYCatch(NULL) }
2093
2094 static void ObjectiveC_Image_Classes_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2095     const char *internal(reinterpret_cast<const char *>(JSObjectGetPrivate(object)));
2096     unsigned int size;
2097     const char **data(objc_copyClassNamesForImage(internal, &size));
2098     for (size_t i(0); i != size; ++i)
2099         JSPropertyNameAccumulatorAddName(names, CYJSString(data[i]));
2100     free(data);
2101 }
2102
2103 static JSValueRef ObjectiveC_Images_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2104     CYPool pool;
2105     const char *name(CYPoolCString(pool, context, property));
2106     unsigned int size;
2107     const char **data(objc_copyImageNames(&size));
2108     for (size_t i(0); i != size; ++i)
2109         if (strcmp(name, data[i]) == 0) {
2110             name = data[i];
2111             goto free;
2112         }
2113     name = NULL;
2114   free:
2115     free(data);
2116     if (name == NULL)
2117         return NULL;
2118     JSObjectRef value(JSObjectMake(context, NULL, NULL));
2119     CYSetProperty(context, value, CYJSString("classes"), JSObjectMake(context, ObjectiveC_Image_Classes_, const_cast<char *>(name)));
2120     return value;
2121 } CYCatch(NULL) }
2122
2123 static void ObjectiveC_Images_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2124     unsigned int size;
2125     const char **data(objc_copyImageNames(&size));
2126     for (size_t i(0); i != size; ++i)
2127         JSPropertyNameAccumulatorAddName(names, CYJSString(data[i]));
2128     free(data);
2129 }
2130 #endif
2131
2132 static JSValueRef ObjectiveC_Protocols_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2133     CYPool pool;
2134     const char *name(CYPoolCString(pool, context, property));
2135     if (Protocol *protocol = objc_getProtocol(name))
2136         return CYMakeInstance(context, protocol, true);
2137     return NULL;
2138 } CYCatch(NULL) }
2139
2140 static void ObjectiveC_Protocols_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2141 #if OBJC_API_VERSION >= 2
2142     unsigned int size;
2143     Protocol **data(objc_copyProtocolList(&size));
2144     for (size_t i(0); i != size; ++i)
2145         JSPropertyNameAccumulatorAddName(names, CYJSString(protocol_getName(data[i])));
2146     free(data);
2147 #else
2148     // XXX: fix this!
2149 #endif
2150 }
2151
2152 static JSValueRef ObjectiveC_Constants_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2153     CYPool pool;
2154     CYUTF8String name(CYPoolUTF8String(pool, context, property));
2155     if (name == "nil")
2156         return Instance::Make(context, nil);
2157     return NULL;
2158 } CYCatch(NULL) }
2159
2160 static void ObjectiveC_Constants_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
2161     JSPropertyNameAccumulatorAddName(names, CYJSString("nil"));
2162 }
2163
2164 #ifdef __APPLE__
2165 #if defined(__i386__) || defined(__x86_64__)
2166 #define OBJC_MAX_STRUCT_BY_VALUE 8
2167 static int struct_forward_array[] = {
2168     0, 0, 0, 1, 0, 1, 1, 1, 0 };
2169 #elif defined(__arm__)
2170 #define OBJC_MAX_STRUCT_BY_VALUE 1
2171 static int struct_forward_array[] = {
2172     0, 0 };
2173 #elif defined(__arm64__)
2174 #define CY_NO_STRET
2175 #else
2176 #error missing objc-runtime-info
2177 #endif
2178
2179 #ifndef CY_NO_STRET
2180 static bool stret(ffi_type *ffi_type) {
2181     return ffi_type->type == FFI_TYPE_STRUCT && (
2182         ffi_type->size > OBJC_MAX_STRUCT_BY_VALUE ||
2183         struct_forward_array[ffi_type->size] != 0
2184     );
2185 }
2186 #endif
2187 #endif
2188
2189 JSValueRef CYSendMessage(CYPool &pool, JSContextRef context, id self, Class _class, SEL _cmd, size_t count, const JSValueRef arguments[], bool initialize, JSValueRef *exception) { CYTry {
2190     const char *type;
2191
2192     if (_class == NULL)
2193         _class = object_getClass(self);
2194
2195     IMP imp;
2196
2197     if (objc_method *method = class_getInstanceMethod(_class, _cmd)) {
2198         imp = method_getImplementation(method);
2199         type = method_getTypeEncoding(method);
2200     } else {
2201         imp = NULL;
2202
2203         CYPoolTry {
2204             NSMethodSignature *method([self methodSignatureForSelector:_cmd]);
2205             if (method == nil)
2206                 throw CYJSError(context, "unrecognized selector %s sent to object %p", sel_getName(_cmd), self);
2207             type = CYPoolCString(pool, context, [method _typeString]);
2208         } CYPoolCatch(NULL)
2209     }
2210
2211     void *setup[2];
2212     setup[0] = &self;
2213     setup[1] = &_cmd;
2214
2215     sig::Signature signature;
2216     sig::Parse(pool, &signature, type, &Structor_);
2217
2218     size_t used(count + 3);
2219     if (used > signature.count) {
2220         sig::Element *elements(new (pool) sig::Element[used]);
2221         memcpy(elements, signature.elements, used * sizeof(sig::Element));
2222
2223         for (size_t index(signature.count); index != used; ++index) {
2224             sig::Element *element(&elements[index]);
2225             element->name = NULL;
2226             element->offset = _not(size_t);
2227
2228             sig::Type *type(new (pool) sig::Type);
2229             memset(type, 0, sizeof(*type));
2230             type->primitive = sig::object_P;
2231             element->type = type;
2232         }
2233
2234         signature.elements = elements;
2235         signature.count = used;
2236     }
2237
2238     ffi_cif cif;
2239     sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
2240
2241     if (imp == NULL) {
2242 #ifdef __APPLE__
2243 #ifndef CY_NO_STRET
2244         if (stret(cif.rtype))
2245             imp = class_getMethodImplementation_stret(_class, _cmd);
2246         else
2247 #endif
2248             imp = class_getMethodImplementation(_class, _cmd);
2249 #else
2250         objc_super super = {self, _class};
2251         imp = objc_msg_lookup_super(&super, _cmd);
2252 #endif
2253     }
2254
2255     void (*function)() = reinterpret_cast<void (*)()>(imp);
2256     return CYCallFunction(pool, context, 2, setup, count, arguments, initialize, exception, &signature, &cif, function);
2257 } CYCatch(NULL) }
2258
2259 static JSValueRef $objc_msgSend(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2260     if (count < 2)
2261         throw CYJSError(context, "too few arguments to objc_msgSend");
2262
2263     CYPool pool;
2264
2265     bool uninitialized;
2266
2267     id self;
2268     SEL _cmd;
2269     Class _class;
2270
2271     if (JSValueIsObjectOfClass(context, arguments[0], Super_)) {
2272         cy::Super *internal(reinterpret_cast<cy::Super *>(JSObjectGetPrivate((JSObjectRef) arguments[0])));
2273         self = internal->GetValue();
2274         _class = internal->class_;;
2275         uninitialized = false;
2276     } else if (CYJSValueIsNSObject(context, arguments[0])) {
2277         Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate((JSObjectRef) arguments[0])));
2278         self = internal->GetValue();
2279         _class = nil;
2280         uninitialized = internal->IsUninitialized();
2281         if (uninitialized)
2282             internal->value_ = nil;
2283     } else {
2284         self = CYCastNSObject(&pool, context, arguments[0]);
2285         _class = nil;
2286         uninitialized = false;
2287     }
2288
2289     if (self == nil)
2290         return CYJSNull(context);
2291
2292     _cmd = CYCastSEL(context, arguments[1]);
2293
2294     return CYSendMessage(pool, context, self, _class, _cmd, count - 2, arguments + 2, uninitialized, exception);
2295 } CYCatch(NULL) }
2296
2297 static JSValueRef Selector_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2298     JSValueRef setup[count + 2];
2299     setup[0] = _this;
2300     setup[1] = object;
2301     memcpy(setup + 2, arguments, sizeof(JSValueRef) * count);
2302     return $objc_msgSend(context, NULL, NULL, count + 2, setup, exception);
2303 } CYCatch(NULL) }
2304
2305 static JSValueRef Message_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2306     CYPool pool;
2307     Message_privateData *internal(reinterpret_cast<Message_privateData *>(JSObjectGetPrivate(object)));
2308
2309     // XXX: handle Instance::Uninitialized?
2310     id self(CYCastNSObject(&pool, context, _this));
2311
2312     void *setup[2];
2313     setup[0] = &self;
2314     setup[1] = &internal->sel_;
2315
2316     return CYCallFunction(pool, context, 2, setup, count, arguments, false, exception, &internal->signature_, &internal->cif_, internal->GetValue());
2317 } CYCatch(NULL) }
2318
2319 static JSObjectRef Super_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2320     if (count != 2)
2321         throw CYJSError(context, "incorrect number of arguments to Super constructor");
2322     CYPool pool;
2323     id self(CYCastNSObject(&pool, context, arguments[0]));
2324     Class _class(CYCastClass(pool, context, arguments[1]));
2325     return cy::Super::Make(context, self, _class);
2326 } CYCatch(NULL) }
2327
2328 static JSObjectRef Selector_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2329     if (count != 1)
2330         throw CYJSError(context, "incorrect number of arguments to Selector constructor");
2331     CYPool pool;
2332     const char *name(CYPoolCString(pool, context, arguments[0]));
2333     return CYMakeSelector(context, sel_registerName(name));
2334 } CYCatch(NULL) }
2335
2336 static JSObjectRef Instance_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2337     if (count > 1)
2338         throw CYJSError(context, "incorrect number of arguments to Instance constructor");
2339     id self(count == 0 ? nil : CYCastPointer<id>(context, arguments[0]));
2340     return CYMakeInstance(context, self, false);
2341 } CYCatch(NULL) }
2342
2343 static JSValueRef CYValue_getProperty_value(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2344     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(object)));
2345     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
2346 } CYCatch(NULL) }
2347
2348 static JSValueRef CYValue_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2349     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
2350     Type_privateData *typical(internal->GetType());
2351
2352     sig::Type *type;
2353     ffi_type *ffi;
2354
2355     if (typical == NULL) {
2356         type = NULL;
2357         ffi = NULL;
2358     } else {
2359         type = typical->type_;
2360         ffi = typical->ffi_;
2361     }
2362
2363     return CYMakePointer(context, &internal->value_, _not(size_t), type, ffi, object);
2364 } CYCatch(NULL) }
2365
2366 static JSValueRef Instance_getProperty_constructor(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2367     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2368     return Instance::Make(context, (id) object_getClass(internal->GetValue()));
2369 } CYCatch(NULL) }
2370
2371 static JSValueRef Instance_getProperty_prototype(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2372     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2373     id self(internal->GetValue());
2374     if (!CYIsClass(self))
2375         return CYJSUndefined(context);
2376     return CYGetClassPrototype(context, self);
2377 } CYCatch(NULL) }
2378
2379 static JSValueRef Instance_getProperty_messages(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
2380     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(object)));
2381     id self(internal->GetValue());
2382     if (!CYIsClass(self))
2383         return CYJSUndefined(context);
2384     return Messages::Make(context, (Class) self);
2385 } CYCatch(NULL) }
2386
2387 static JSValueRef Instance_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2388     if (!CYJSValueIsNSObject(context, _this))
2389         return NULL;
2390
2391     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2392     return CYCastJSValue(context, CYJSString(context, CYCastNSCYON(internal->GetValue(), false)));
2393 } CYCatch(NULL) }
2394
2395 static JSValueRef Instance_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2396     if (!CYJSValueIsNSObject(context, _this))
2397         return NULL;
2398
2399     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2400     id value(internal->GetValue());
2401
2402     CYPoolTry {
2403         NSString *key;
2404         if (count == 0)
2405             key = nil;
2406         else
2407             key = CYCastNSString(NULL, context, CYJSString(context, arguments[0]));
2408
2409         if (!CYImplements(value, object_getClass(value), @selector(cy$toJSON:inContext:)))
2410             return CYJSUndefined(context);
2411         else if (JSValueRef json = [value cy$toJSON:key inContext:context])
2412             return json;
2413         else
2414             return CYCastJSValue(context, CYJSString(context, [value description]));
2415     } CYPoolCatch(NULL)
2416 } CYCatch(NULL) return /*XXX*/ NULL; }
2417
2418 static JSValueRef Instance_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2419     if (!CYJSValueIsNSObject(context, _this))
2420         return NULL;
2421
2422     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2423     id value(internal->GetValue());
2424
2425     if (![value respondsToSelector:@selector(cy$valueOfInContext:)])
2426         return _this;
2427
2428     if (JSValueRef result = [value cy$valueOfInContext:context])
2429         return result;
2430
2431     return _this;
2432 } CYCatch(NULL) return /*XXX*/ NULL; }
2433
2434 static JSValueRef Instance_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2435     if (!CYJSValueIsNSObject(context, _this))
2436         return NULL;
2437
2438     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2439     // XXX: but... but... THIS ISN'T A POINTER! :(
2440     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->GetValue()));
2441 } CYCatch(NULL) return /*XXX*/ NULL; }
2442
2443 static JSValueRef Instance_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2444     if (!CYJSValueIsNSObject(context, _this))
2445         return NULL;
2446
2447     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2448     id value(internal->GetValue());
2449
2450     CYPoolTry {
2451         // XXX: this seems like a stupid implementation; what if it crashes? why not use the CYONifier backend?
2452         return CYCastJSValue(context, CYJSString(context, [value description]));
2453     } CYPoolCatch(NULL)
2454 } CYCatch(NULL) return /*XXX*/ NULL; }
2455
2456 static JSValueRef Class_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2457     if (!CYJSValueIsNSObject(context, _this))
2458         return NULL;
2459
2460     Instance *internal(reinterpret_cast<Instance *>(JSObjectGetPrivate(_this)));
2461     id value(internal->GetValue());
2462
2463     if (!CYIsClass(value))
2464         CYThrow("non-Class object cannot be used as Type");
2465
2466     // XXX: this is a very silly implementation
2467
2468     std::ostringstream type;
2469     type << "@\"";
2470     type << class_getName(value);
2471     type << "\"";
2472
2473     CYPoolTry {
2474         return CYMakeType(context, type.str().c_str());
2475     } CYPoolCatch(NULL)
2476 } CYCatch(NULL) return /*XXX*/ NULL; }
2477
2478 static JSValueRef Selector_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2479     Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
2480     return CYCastJSValue(context, sel_getName(internal->GetValue()));
2481 } CYCatch(NULL) }
2482
2483 static JSValueRef Selector_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2484     return Selector_callAsFunction_toString(context, object, _this, count, arguments, exception);
2485 } CYCatch(NULL) }
2486
2487 static JSValueRef Selector_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2488     Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
2489     const char *name(sel_getName(internal->GetValue()));
2490
2491     CYPoolTry {
2492         NSString *string([NSString stringWithFormat:@"@selector(%s)", name]);
2493         return CYCastJSValue(context, CYJSString(context, string));
2494     } CYPoolCatch(NULL)
2495 } CYCatch(NULL) return /*XXX*/ NULL; }
2496
2497 static JSValueRef Selector_callAsFunction_type(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2498     if (count != 1)
2499         throw CYJSError(context, "incorrect number of arguments to Selector.type");
2500
2501     CYPool pool;
2502     Selector_privateData *internal(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
2503     SEL sel(internal->GetValue());
2504
2505     objc_method *method;
2506     if (Class _class = CYCastClass(pool, context, arguments[0]))
2507         method = class_getInstanceMethod(_class, sel);
2508     else
2509         method = NULL;
2510
2511     if (const char *type = CYPoolTypeEncoding(pool, context, sel, method))
2512         return CYCastJSValue(context, CYJSString(type));
2513
2514     return CYJSNull(context);
2515 } CYCatch(NULL) }
2516
2517 static JSStaticValue Selector_staticValues[2] = {
2518     {"value", &CYValue_getProperty_value, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete},
2519     {NULL, NULL, NULL, 0}
2520 };
2521
2522 static JSStaticValue Instance_staticValues[5] = {
2523     {"constructor", &Instance_getProperty_constructor, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2524     {"messages", &Instance_getProperty_messages, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2525     {"prototype", &Instance_getProperty_prototype, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2526     {"value", &CYValue_getProperty_value, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2527     {NULL, NULL, NULL, 0}
2528 };
2529
2530 static JSStaticFunction Instance_staticFunctions[7] = {
2531     {"$cya", &CYValue_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2532     {"toCYON", &Instance_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2533     {"toJSON", &Instance_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2534     {"valueOf", &Instance_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2535     {"toPointer", &Instance_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2536     {"toString", &Instance_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2537     {NULL, NULL, 0}
2538 };
2539
2540 static JSStaticFunction Class_staticFunctions[2] = {
2541     {"pointerTo", &Class_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2542     {NULL, NULL, 0}
2543 };
2544
2545 static JSStaticFunction Internal_staticFunctions[2] = {
2546     {"$cya", &Internal_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2547     {NULL, NULL, 0}
2548 };
2549
2550 static JSStaticFunction Selector_staticFunctions[5] = {
2551     {"toCYON", &Selector_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2552     {"toJSON", &Selector_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2553     {"toString", &Selector_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2554     {"type", &Selector_callAsFunction_type, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
2555     {NULL, NULL, 0}
2556 };
2557
2558 #ifdef __APPLE__
2559 JSValueRef NSCFType$cy$toJSON$inContext$(id self, SEL sel, JSValueRef key, JSContextRef context) { CYObjectiveTry_(context) {
2560     return CYCastJSValue(context, [(NSString *) CFCopyDescription((CFTypeRef) self) autorelease]);
2561 } CYObjectiveCatch }
2562 #endif
2563
2564 void CYObjectiveC_Initialize() { /*XXX*/ JSContextRef context(NULL); CYPoolTry {
2565     $objc_setAssociatedObject = reinterpret_cast<void (*)(id, void *, id value, objc_AssociationPolicy)>(dlsym(RTLD_DEFAULT, "objc_setAssociatedObject"));
2566     $objc_getAssociatedObject = reinterpret_cast<id (*)(id, void *)>(dlsym(RTLD_DEFAULT, "objc_getAssociatedObject"));
2567     $objc_removeAssociatedObjects = reinterpret_cast<void (*)(id)>(dlsym(RTLD_DEFAULT, "objc_removeAssociatedObjects"));
2568
2569     CYPool &pool(CYGetGlobalPool());
2570
2571     Object_type = new(pool) Type_privateData("@");
2572     Selector_type = new(pool) Type_privateData(":");
2573
2574     NSArray_ = objc_getClass("NSArray");
2575     NSBlock_ = objc_getClass("NSBlock");
2576     NSDictionary_ = objc_getClass("NSDictionary");
2577     NSString_ = objc_getClass("NSString");
2578     Object_ = objc_getClass("Object");
2579
2580 #ifdef __APPLE__
2581     // XXX: apparently, iOS now has both of these
2582     NSCFBoolean_ = objc_getClass("__NSCFBoolean");
2583     if (NSCFBoolean_ == nil)
2584         NSCFBoolean_ = objc_getClass("NSCFBoolean");
2585
2586     NSCFType_ = objc_getClass("NSCFType");
2587
2588     NSZombie_ = objc_getClass("_NSZombie_");
2589
2590     banned_.insert(Object_);
2591     banned_.insert(objc_getClass("__NSAtom"));
2592     banned_.insert(objc_getClass("__NSGenericDeallocHandler"));
2593     banned_.insert(objc_getClass("NSMessageBuilder"));
2594     banned_.insert(objc_getClass("__NSMessageBuilder"));
2595 #else
2596     NSBoolNumber_ = objc_getClass("NSBoolNumber");
2597 #endif
2598
2599     JSClassDefinition definition;
2600
2601     definition = kJSClassDefinitionEmpty;
2602     definition.className = "Instance";
2603     definition.staticValues = Instance_staticValues;
2604     definition.staticFunctions = Instance_staticFunctions;
2605     definition.hasProperty = &Instance_hasProperty;
2606     definition.getProperty = &Instance_getProperty;
2607     definition.setProperty = &Instance_setProperty;
2608     definition.deleteProperty = &Instance_deleteProperty;
2609     definition.getPropertyNames = &Instance_getPropertyNames;
2610     definition.callAsConstructor = &Instance_callAsConstructor;
2611     definition.callAsFunction = &Instance_callAsFunction;
2612     definition.hasInstance = &Instance_hasInstance;
2613     definition.finalize = &CYFinalize;
2614     Instance_ = JSClassCreate(&definition);
2615
2616     definition.className = "ArrayInstance";
2617     ArrayInstance_ = JSClassCreate(&definition);
2618
2619     definition.className = "FunctionInstance";
2620     FunctionInstance_ = JSClassCreate(&definition);
2621
2622     definition.className = "ObjectInstance";
2623     ObjectInstance_ = JSClassCreate(&definition);
2624
2625     definition.className = "StringInstance";
2626     StringInstance_ = JSClassCreate(&definition);
2627
2628     definition = kJSClassDefinitionEmpty;
2629     definition.className = "Class";
2630     definition.staticFunctions = Class_staticFunctions;
2631     Class_ = JSClassCreate(&definition);
2632
2633     definition = kJSClassDefinitionEmpty;
2634     definition.className = "Internal";
2635     definition.staticFunctions = Internal_staticFunctions;
2636     definition.hasProperty = &Internal_hasProperty;
2637     definition.getProperty = &Internal_getProperty;
2638     definition.setProperty = &Internal_setProperty;
2639     definition.getPropertyNames = &Internal_getPropertyNames;
2640     definition.finalize = &CYFinalize;
2641     Internal_ = JSClassCreate(&definition);
2642
2643     definition = kJSClassDefinitionEmpty;
2644     definition.className = "Message";
2645     definition.staticFunctions = cy::Functor::StaticFunctions;
2646     definition.callAsFunction = &Message_callAsFunction;
2647     definition.finalize = &CYFinalize;
2648     Message_ = JSClassCreate(&definition);
2649
2650     definition = kJSClassDefinitionEmpty;
2651     definition.className = "Messages";
2652     definition.hasProperty = &Messages_hasProperty;
2653     definition.getProperty = &Messages_getProperty;
2654     definition.setProperty = &Messages_setProperty;
2655 #if 0 && OBJC_API_VERSION < 2
2656     definition.deleteProperty = &Messages_deleteProperty;
2657 #endif
2658     definition.getPropertyNames = &Messages_getPropertyNames;
2659     definition.finalize = &CYFinalize;
2660     Messages_ = JSClassCreate(&definition);
2661
2662     definition = kJSClassDefinitionEmpty;
2663     definition.className = "Selector";
2664     definition.staticValues = Selector_staticValues;
2665     definition.staticFunctions = Selector_staticFunctions;
2666     definition.callAsFunction = &Selector_callAsFunction;
2667     definition.finalize = &CYFinalize;
2668     Selector_ = JSClassCreate(&definition);
2669
2670     definition = kJSClassDefinitionEmpty;
2671     definition.className = "Super";
2672     definition.staticFunctions = Internal_staticFunctions;
2673     definition.finalize = &CYFinalize;
2674     Super_ = JSClassCreate(&definition);
2675
2676     definition = kJSClassDefinitionEmpty;
2677     definition.className = "ObjectiveC::Classes";
2678     definition.getProperty = &ObjectiveC_Classes_getProperty;
2679     definition.getPropertyNames = &ObjectiveC_Classes_getPropertyNames;
2680     ObjectiveC_Classes_ = JSClassCreate(&definition);
2681
2682     definition = kJSClassDefinitionEmpty;
2683     definition.className = "ObjectiveC::Constants";
2684     definition.getProperty = &ObjectiveC_Constants_getProperty;
2685     definition.getPropertyNames = &ObjectiveC_Constants_getPropertyNames;
2686     ObjectiveC_Constants_ = JSClassCreate(&definition);
2687
2688 #if OBJC_API_VERSION >= 2
2689     definition = kJSClassDefinitionEmpty;
2690     definition.className = "ObjectiveC::Images";
2691     definition.getProperty = &ObjectiveC_Images_getProperty;
2692     definition.getPropertyNames = &ObjectiveC_Images_getPropertyNames;
2693     ObjectiveC_Images_ = JSClassCreate(&definition);
2694
2695     definition = kJSClassDefinitionEmpty;
2696     definition.className = "ObjectiveC::Image::Classes";
2697     definition.getProperty = &ObjectiveC_Image_Classes_getProperty;
2698     definition.getPropertyNames = &ObjectiveC_Image_Classes_getPropertyNames;
2699     ObjectiveC_Image_Classes_ = JSClassCreate(&definition);
2700 #endif
2701
2702     definition = kJSClassDefinitionEmpty;
2703     definition.className = "ObjectiveC::Protocols";
2704     definition.getProperty = &ObjectiveC_Protocols_getProperty;
2705     definition.getPropertyNames = &ObjectiveC_Protocols_getPropertyNames;
2706     ObjectiveC_Protocols_ = JSClassCreate(&definition);
2707
2708 #ifdef __APPLE__
2709     class_addMethod(NSCFType_, @selector(cy$toJSON:inContext:), reinterpret_cast<IMP>(&NSCFType$cy$toJSON$inContext$), "^{OpaqueJSValue=}16@0:4@8^{OpaqueJSContext=}12");
2710 #endif
2711 } CYPoolCatch() }
2712
2713 void CYObjectiveC_SetupContext(JSContextRef context) { CYPoolTry {
2714     JSObjectRef global(CYGetGlobalObject(context));
2715     JSObjectRef cy(CYCastJSObject(context, CYGetProperty(context, global, cy_s)));
2716     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
2717     JSObjectRef all(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("all"))));
2718     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
2719
2720     JSObjectRef ObjectiveC(JSObjectMake(context, NULL, NULL));
2721     CYSetProperty(context, cycript, CYJSString("ObjectiveC"), ObjectiveC);
2722
2723     JSObjectRef protocols(JSObjectMake(context, ObjectiveC_Protocols_, NULL));
2724     CYSetProperty(context, ObjectiveC, CYJSString("protocols"), protocols);
2725     CYArrayPush(context, alls, protocols);
2726
2727     JSObjectRef classes(JSObjectMake(context, ObjectiveC_Classes_, NULL));
2728     CYSetProperty(context, ObjectiveC, CYJSString("classes"), classes);
2729     CYArrayPush(context, alls, classes);
2730
2731     JSObjectRef constants(JSObjectMake(context, ObjectiveC_Constants_, NULL));
2732     CYSetProperty(context, ObjectiveC, CYJSString("constants"), constants);
2733     CYArrayPush(context, alls, constants);
2734
2735 #if OBJC_API_VERSION >= 2
2736     CYSetProperty(context, ObjectiveC, CYJSString("images"), JSObjectMake(context, ObjectiveC_Images_, NULL));
2737 #endif
2738
2739     JSObjectRef Class(JSObjectMakeConstructor(context, Class_, NULL));
2740     JSObjectRef Instance(JSObjectMakeConstructor(context, Instance_, &Instance_new));
2741     JSObjectRef Message(JSObjectMakeConstructor(context, Message_, NULL));
2742     JSObjectRef Selector(JSObjectMakeConstructor(context, Selector_, &Selector_new));
2743     JSObjectRef Super(JSObjectMakeConstructor(context, Super_, &Super_new));
2744
2745     JSObjectRef Instance_prototype(CYCastJSObject(context, CYGetProperty(context, Instance, prototype_s)));
2746     CYSetProperty(context, cy, CYJSString("Instance_prototype"), Instance_prototype);
2747
2748     JSObjectRef ArrayInstance(JSObjectMakeConstructor(context, ArrayInstance_, NULL));
2749     JSObjectRef ArrayInstance_prototype(CYCastJSObject(context, CYGetProperty(context, ArrayInstance, prototype_s)));
2750     CYSetProperty(context, cy, CYJSString("ArrayInstance_prototype"), ArrayInstance_prototype);
2751     JSObjectRef Array_prototype(CYGetCachedObject(context, CYJSString("Array_prototype")));
2752     JSObjectSetPrototype(context, ArrayInstance_prototype, Array_prototype);
2753
2754     JSObjectRef FunctionInstance(JSObjectMakeConstructor(context, FunctionInstance_, NULL));
2755     JSObjectRef FunctionInstance_prototype(CYCastJSObject(context, CYGetProperty(context, FunctionInstance, prototype_s)));
2756     CYSetProperty(context, cy, CYJSString("FunctionInstance_prototype"), FunctionInstance_prototype);
2757     JSObjectRef Function_prototype(CYGetCachedObject(context, CYJSString("Function_prototype")));
2758     JSObjectSetPrototype(context, FunctionInstance_prototype, Function_prototype);
2759
2760     JSObjectRef ObjectInstance(JSObjectMakeConstructor(context, ObjectInstance_, NULL));
2761     JSObjectRef ObjectInstance_prototype(CYCastJSObject(context, CYGetProperty(context, ObjectInstance, prototype_s)));
2762     CYSetProperty(context, cy, CYJSString("ObjectInstance_prototype"), ObjectInstance_prototype);
2763     JSObjectRef Object_prototype(CYGetCachedObject(context, CYJSString("Object_prototype")));
2764     JSObjectSetPrototype(context, ObjectInstance_prototype, Object_prototype);
2765
2766     JSObjectRef StringInstance(JSObjectMakeConstructor(context, StringInstance_, NULL));
2767     JSObjectRef StringInstance_prototype(CYCastJSObject(context, CYGetProperty(context, StringInstance, prototype_s)));
2768     CYSetProperty(context, cy, CYJSString("StringInstance_prototype"), StringInstance_prototype);
2769     JSObjectRef String_prototype(CYGetCachedObject(context, CYJSString("String_prototype")));
2770     JSObjectSetPrototype(context, StringInstance_prototype, String_prototype);
2771
2772     JSObjectRef Class_prototype(CYCastJSObject(context, CYGetProperty(context, Class, prototype_s)));
2773     CYSetProperty(context, cy, CYJSString("Class_prototype"), Class_prototype);
2774     JSObjectSetPrototype(context, Class_prototype, Instance_prototype);
2775
2776     CYSetProperty(context, cycript, CYJSString("Instance"), Instance);
2777     CYSetProperty(context, cycript, CYJSString("Selector"), Selector);
2778     CYSetProperty(context, cycript, CYJSString("Super"), Super);
2779
2780     JSObjectRef box(JSObjectMakeFunctionWithCallback(context, CYJSString("box"), &Instance_box_callAsFunction));
2781     CYSetProperty(context, Instance, CYJSString("box"), box);
2782
2783 #if defined(__APPLE__) && defined(__arm__) && 0
2784     CYSetProperty(context, all, CYJSString("objc_registerClassPair"), &objc_registerClassPair_, kJSPropertyAttributeDontEnum);
2785 #endif
2786
2787     CYSetProperty(context, all, CYJSString("objc_msgSend"), &$objc_msgSend, kJSPropertyAttributeDontEnum);
2788
2789     JSObjectSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Message, prototype_s)), Function_prototype);
2790     JSObjectSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Selector, prototype_s)), Function_prototype);
2791 } CYPoolCatch() }
2792
2793 static CYHooks CYObjectiveCHooks = {
2794     &CYObjectiveC_ExecuteStart,
2795     &CYObjectiveC_ExecuteEnd,
2796     &CYObjectiveC_CallFunction,
2797     &CYObjectiveC_Initialize,
2798     &CYObjectiveC_SetupContext,
2799     &CYObjectiveC_PoolFFI,
2800     &CYObjectiveC_FromFFI,
2801 };
2802
2803 struct CYObjectiveC {
2804     CYObjectiveC() {
2805         hooks_ = &CYObjectiveCHooks;
2806         // XXX: evil magic juju to make this actually take effect on a Mac when compiled with autoconf/libtool doom!
2807         _assert(hooks_ != NULL);
2808     }
2809 } CYObjectiveC;