Library.mm

   1 /* Cyrker - Remove Execution Server and Disassembler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #define _GNU_SOURCE
  41
  42 #include <substrate.h>
  43 #include "cycript.hpp"
  44
  45 #include "sig/parse.hpp"
  46 #include "sig/ffi_type.hpp"
  47
  48 #include "Pooling.hpp"
  49 #include "Struct.hpp"
  50
  51 #include <unistd.h>
  52
  53 #include <CoreFoundation/CoreFoundation.h>
  54 #include <CoreFoundation/CFLogUtilities.h>
  55
  56 #include <CFNetwork/CFNetwork.h>
  57
  58 #include <WebKit/WebScriptObject.h>
  59
  60 #include <sys/types.h>
  61 #include <sys/socket.h>
  62 #include <netinet/in.h>
  63 #include <sys/mman.h>
  64
  65 #include <iostream>
  66 #include <ext/stdio_filebuf.h>
  67 #include <set>
  68 #include <map>
  69
  70 #include <cmath>
  71
  72 #include "Parser.hpp"
  73 #include "Cycript.tab.hh"
  74
  75 #undef _assert
  76 #undef _trace
  77
  78 #define _assert(test) do { \
  79     if (!(test)) \
  80         @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:[NSString stringWithFormat:@"_assert(%s):%s(%u):%s", #test, __FILE__, __LINE__, __FUNCTION__] userInfo:nil]; \
  81 } while (false)
  82
  83 #define _trace() do { \
  84     CFLog(kCFLogLevelNotice, CFSTR("_trace():%u"), __LINE__); \
  85 } while (false)
  86
  87 #define CYPoolTry { \
  88     id _saved(nil); \
  89     NSAutoreleasePool *_pool([[NSAutoreleasePool alloc] init]); \
  90     @try
  91 #define CYPoolCatch(value) \
  92     @catch (NSException *error) { \
  93         _saved = [error retain]; \
  94         @throw; \
  95         return value; \
  96     } @finally { \
  97         [_pool release]; \
  98         if (_saved != nil) \
  99             [_saved autorelease]; \
 100     } \
 101 }
 102
 103 static JSGlobalContextRef Context_;
 104 static JSObjectRef System_;
 105
 106 static JSClassRef Functor_;
 107 static JSClassRef Instance_;
 108 static JSClassRef Pointer_;
 109 static JSClassRef Runtime_;
 110 static JSClassRef Selector_;
 111 static JSClassRef Struct_;
 112
 113 static JSObjectRef Array_;
 114 static JSObjectRef Function_;
 115
 116 static JSStringRef name_;
 117 static JSStringRef message_;
 118 static JSStringRef length_;
 119
 120 static Class NSCFBoolean_;
 121
 122 static NSArray *Bridge_;
 123
 124 struct Client {
 125     CFHTTPMessageRef message_;
 126     CFSocketRef socket_;
 127 };
 128
 129 struct CYData {
 130     apr_pool_t *pool_;
 131
 132     virtual ~CYData() {
 133     }
 134
 135     void *operator new(size_t size) {
 136         apr_pool_t *pool;
 137         apr_pool_create(&pool, NULL);
 138         void *data(apr_palloc(pool, size));
 139         reinterpret_cast<CYData *>(data)->pool_ = pool;
 140         return data;;
 141     }
 142
 143     static void Finalize(JSObjectRef object) {
 144         CYData *data(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 145         data->~CYData();
 146         apr_pool_destroy(data->pool_);
 147     }
 148 };
 149
 150 struct Pointer_privateData :
 151     CYData
 152 {
 153     void *value_;
 154     sig::Type type_;
 155
 156     Pointer_privateData() {
 157     }
 158
 159     Pointer_privateData(void *value) :
 160         value_(value)
 161     {
 162     }
 163 };
 164
 165 struct Functor_privateData :
 166     Pointer_privateData
 167 {
 168     sig::Signature signature_;
 169     ffi_cif cif_;
 170
 171     Functor_privateData(const char *type, void (*value)()) :
 172         Pointer_privateData(reinterpret_cast<void *>(value))
 173     {
 174         sig::Parse(pool_, &signature_, type);
 175         sig::sig_ffi_cif(pool_, &sig::ObjectiveC, &signature_, &cif_);
 176     }
 177 };
 178
 179 struct ffoData :
 180     Functor_privateData
 181 {
 182     JSContextRef context_;
 183     JSObjectRef function_;
 184
 185     ffoData(const char *type) :
 186         Functor_privateData(type, NULL)
 187     {
 188     }
 189 };
 190
 191 struct Selector_privateData : Pointer_privateData {
 192     Selector_privateData(SEL value) :
 193         Pointer_privateData(value)
 194     {
 195     }
 196
 197     SEL GetValue() const {
 198         return reinterpret_cast<SEL>(value_);
 199     }
 200 };
 201
 202 struct Instance_privateData :
 203     Pointer_privateData
 204 {
 205     bool transient_;
 206
 207     Instance_privateData(id value, bool transient) :
 208         Pointer_privateData(value)
 209     {
 210     }
 211
 212     virtual ~Instance_privateData() {
 213         if (!transient_)
 214             [GetValue() release];
 215     }
 216
 217     id GetValue() const {
 218         return reinterpret_cast<id>(value_);
 219     }
 220 };
 221
 222 namespace sig {
 223
 224 void Copy(apr_pool_t *pool, Type &lhs, Type &rhs);
 225
 226 void Copy(apr_pool_t *pool, Element &lhs, Element &rhs) {
 227     lhs.name = apr_pstrdup(pool, rhs.name);
 228     if (rhs.type == NULL)
 229         lhs.type = NULL;
 230     else {
 231         lhs.type = new(pool) Type;
 232         Copy(pool, *lhs.type, *rhs.type);
 233     }
 234     lhs.offset = rhs.offset;
 235 }
 236
 237 void Copy(apr_pool_t *pool, Signature &lhs, Signature &rhs) {
 238     size_t count(rhs.count);
 239     lhs.count = count;
 240     lhs.elements = new(pool) Element[count];
 241     for (size_t index(0); index != count; ++index)
 242         Copy(pool, lhs.elements[index], rhs.elements[index]);
 243 }
 244
 245 void Copy(apr_pool_t *pool, Type &lhs, Type &rhs) {
 246     lhs.primitive = rhs.primitive;
 247     lhs.name = apr_pstrdup(pool, rhs.name);
 248     lhs.flags = rhs.flags;
 249
 250     if (sig::IsAggregate(rhs.primitive))
 251         Copy(pool, lhs.data.signature, rhs.data.signature);
 252     else {
 253         if (rhs.data.data.type != NULL) {
 254             lhs.data.data.type = new(pool) Type;
 255             Copy(pool, *lhs.data.data.type, *rhs.data.data.type);
 256         }
 257
 258         lhs.data.data.size = rhs.data.data.size;
 259     }
 260 }
 261
 262 void Copy(apr_pool_t *pool, ffi_type &lhs, ffi_type &rhs) {
 263     lhs.size = rhs.size;
 264     lhs.alignment = rhs.alignment;
 265     lhs.type = rhs.type;
 266     if (rhs.elements == NULL)
 267         lhs.elements = NULL;
 268     else {
 269         size_t count(0);
 270         while (rhs.elements[count] != NULL)
 271             ++count;
 272
 273         lhs.elements = new(pool) ffi_type *[count + 1];
 274         lhs.elements[count] = NULL;
 275
 276         for (size_t index(0); index != count; ++index) {
 277             // XXX: if these are libffi native then you can just take them
 278             ffi_type *ffi(new(pool) ffi_type);
 279             lhs.elements[index] = ffi;
 280             sig::Copy(pool, *ffi, *rhs.elements[index]);
 281         }
 282     }
 283 }
 284
 285 }
 286
 287 struct Type_privateData {
 288     sig::Type type_;
 289     ffi_type ffi_;
 290     //size_t count_;
 291
 292     Type_privateData(apr_pool_t *pool, sig::Type *type, ffi_type *ffi) {
 293         sig::Copy(pool, type_, *type);
 294         sig::Copy(pool, ffi_, *ffi);
 295
 296         /*sig::Element element;
 297         element.name = NULL;
 298         element.type = type;
 299         element.offset = 0;
 300
 301         sig::Signature signature;
 302         signature.elements = &element;
 303         signature.count = 1;
 304
 305         ffi_cif cif;
 306         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
 307         ffi_ = *cif.rtype;*/
 308
 309         /*if (type_->type != FFI_TYPE_STRUCT)
 310             count_ = 0;
 311         else {
 312             size_t count(0);
 313             while (type_->elements[count] != NULL)
 314                 ++count;
 315             count_ = count;
 316         }*/
 317     }
 318 };
 319
 320 struct Struct_privateData :
 321     Pointer_privateData
 322 {
 323     JSObjectRef owner_;
 324     Type_privateData *type_;
 325
 326     Struct_privateData() {
 327     }
 328 };
 329
 330 struct CStringMapLess :
 331     std::binary_function<const char *, const char *, bool>
 332 {
 333     _finline bool operator ()(const char *lhs, const char *rhs) const {
 334         return strcmp(lhs, rhs) < 0;
 335     }
 336 };
 337
 338 typedef std::map<const char *, Type_privateData *, CStringMapLess> TypeMap;
 339 static TypeMap Types_;
 340
 341 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 342     Struct_privateData *internal(new Struct_privateData());
 343     apr_pool_t *pool(internal->pool_);
 344     Type_privateData *typical(new(pool) Type_privateData(pool, type, ffi));
 345     internal->type_ = typical;
 346
 347     if (owner != NULL) {
 348         internal->owner_ = owner;
 349         internal->value_ = data;
 350     } else {
 351         internal->owner_ = NULL;
 352
 353         size_t size(typical->ffi_.size);
 354         void *copy(apr_palloc(internal->pool_, size));
 355         memcpy(copy, data, size);
 356         internal->value_ = copy;
 357     }
 358
 359     return JSObjectMake(context, Struct_, internal);
 360 }
 361
 362 JSObjectRef CYMakeInstance(JSContextRef context, id object, bool transient) {
 363     if (!transient)
 364         object = [object retain];
 365     Instance_privateData *data(new Instance_privateData(object, transient));
 366     return JSObjectMake(context, Instance_, data);
 367 }
 368
 369 const char *CYPoolCString(apr_pool_t *pool, NSString *value) {
 370     if (pool == NULL)
 371         return [value UTF8String];
 372     else {
 373         size_t size([value maximumLengthOfBytesUsingEncoding:NSUTF8StringEncoding] + 1);
 374         char *string(new(pool) char[size]);
 375         if (![value getCString:string maxLength:size encoding:NSUTF8StringEncoding])
 376             @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"[NSString getCString:maxLength:encoding:] == NO" userInfo:nil];
 377         return string;
 378     }
 379 }
 380
 381 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 382     return JSValueMakeBoolean(context, value);
 383 }
 384
 385 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 386     return JSValueMakeNumber(context, value);
 387 }
 388
 389 #define CYCastJSValue_(Type_) \
 390     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 391         return JSValueMakeNumber(context, static_cast<double>(value)); \
 392     }
 393
 394 CYCastJSValue_(int)
 395 CYCastJSValue_(unsigned int)
 396 CYCastJSValue_(long int)
 397 CYCastJSValue_(long unsigned int)
 398 CYCastJSValue_(long long int)
 399 CYCastJSValue_(long long unsigned int)
 400
 401 JSValueRef CYJSUndefined(JSContextRef context) {
 402     return JSValueMakeUndefined(context);
 403 }
 404
 405 @interface NSMethodSignature (Cycript)
 406 - (NSString *) _typeString;
 407 @end
 408
 409 @interface NSObject (Cycript)
 410 - (bool) cy$isUndefined;
 411 - (NSString *) cy$toJSON;
 412 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context transient:(bool)transient;
 413 - (NSObject *) cy$getProperty:(NSString *)name;
 414 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value;
 415 - (bool) cy$deleteProperty:(NSString *)name;
 416 @end
 417
 418 @interface NSString (Cycript)
 419 - (void *) cy$symbol;
 420 @end
 421
 422 @interface NSNumber (Cycript)
 423 - (void *) cy$symbol;
 424 @end
 425
 426 @implementation NSObject (Cycript)
 427
 428 - (bool) cy$isUndefined {
 429     return false;
 430 }
 431
 432 - (NSString *) cy$toJSON {
 433     return [self description];
 434 }
 435
 436 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context transient:(bool)transient {
 437     return CYMakeInstance(context, self, transient);
 438 }
 439
 440 - (NSObject *) cy$getProperty:(NSString *)name {
 441     if (![name isEqualToString:@"prototype"])
 442         NSLog(@"get:%@", name);
 443     return nil;
 444 }
 445
 446 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
 447     NSLog(@"set:%@", name);
 448     return false;
 449 }
 450
 451 - (bool) cy$deleteProperty:(NSString *)name {
 452     NSLog(@"delete:%@", name);
 453     return false;
 454 }
 455
 456 @end
 457
 458 @implementation WebUndefined (Cycript)
 459
 460 - (bool) cy$isUndefined {
 461     return true;
 462 }
 463
 464 - (NSString *) cy$toJSON {
 465     return @"undefined";
 466 }
 467
 468 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context transient:(bool)transient {
 469     return CYJSUndefined(context);
 470 }
 471
 472 @end
 473
 474 @implementation NSNull (Cycript)
 475
 476 - (NSString *) cy$toJSON {
 477     return @"null";
 478 }
 479
 480 @end
 481
 482 @implementation NSArray (Cycript)
 483
 484 - (NSString *) cy$toJSON {
 485     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 486     [json appendString:@"["];
 487
 488     bool comma(false);
 489     for (id object in self) {
 490         if (comma)
 491             [json appendString:@","];
 492         else
 493             comma = true;
 494         if (![object cy$isUndefined])
 495             [json appendString:[object cy$toJSON]];
 496         else {
 497             [json appendString:@","];
 498             comma = false;
 499         }
 500     }
 501
 502     [json appendString:@"]"];
 503     return json;
 504 }
 505
 506 - (NSObject *) cy$getProperty:(NSString *)name {
 507     int index([name intValue]);
 508     if (index < 0 || index >= static_cast<int>([self count]))
 509         return [super cy$getProperty:name];
 510     else
 511         return [self objectAtIndex:index];
 512 }
 513
 514 @end
 515
 516 @implementation NSMutableArray (Cycript)
 517
 518 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
 519     int index([name intValue]);
 520     if (index < 0 || index >= static_cast<int>([self count]))
 521         return [super cy$setProperty:name to:value];
 522     else {
 523         [self replaceObjectAtIndex:index withObject:(value ?: [NSNull null])];
 524         return true;
 525     }
 526 }
 527
 528 - (bool) cy$deleteProperty:(NSString *)name {
 529     int index([name intValue]);
 530     if (index < 0 || index >= static_cast<int>([self count]))
 531         return [super cy$deleteProperty:name];
 532     else {
 533         [self removeObjectAtIndex:index];
 534         return true;
 535     }
 536 }
 537
 538 @end
 539
 540 @implementation NSDictionary (Cycript)
 541
 542 - (NSString *) cy$toJSON {
 543     NSMutableString *json([[[NSMutableString alloc] init] autorelease]);
 544     [json appendString:@"({"];
 545
 546     bool comma(false);
 547     for (id key in self) {
 548         if (comma)
 549             [json appendString:@","];
 550         else
 551             comma = true;
 552         [json appendString:[key cy$toJSON]];
 553         [json appendString:@":"];
 554         NSObject *object([self objectForKey:key]);
 555         [json appendString:[object cy$toJSON]];
 556     }
 557
 558     [json appendString:@"})"];
 559     return json;
 560 }
 561
 562 - (NSObject *) cy$getProperty:(NSString *)name {
 563     return [self objectForKey:name];
 564 }
 565
 566 @end
 567
 568 @implementation NSMutableDictionary (Cycript)
 569
 570 - (bool) cy$setProperty:(NSString *)name to:(NSObject *)value {
 571     [self setObject:(value ?: [NSNull null]) forKey:name];
 572     return true;
 573 }
 574
 575 - (bool) cy$deleteProperty:(NSString *)name {
 576     if ([self objectForKey:name] == nil)
 577         return false;
 578     else {
 579         [self removeObjectForKey:name];
 580         return true;
 581     }
 582 }
 583
 584 @end
 585
 586 @implementation NSNumber (Cycript)
 587
 588 - (NSString *) cy$toJSON {
 589     return [self class] != NSCFBoolean_ ? [self stringValue] : [self boolValue] ? @"true" : @"false";
 590 }
 591
 592 - (JSValueRef) cy$JSValueInContext:(JSContextRef)context transient:(bool)transient {
 593     return [self class] != NSCFBoolean_ ? CYCastJSValue(context, [self doubleValue]) : CYCastJSValue(context, [self boolValue]);
 594 }
 595
 596 - (void *) cy$symbol {
 597     return [self pointerValue];
 598 }
 599
 600 @end
 601
 602 @implementation NSString (Cycript)
 603
 604 - (NSString *) cy$toJSON {
 605     CFMutableStringRef json(CFStringCreateMutableCopy(kCFAllocatorDefault, 0, (CFStringRef) self));
 606
 607     CFStringFindAndReplace(json, CFSTR("\\"), CFSTR("\\\\"), CFRangeMake(0, CFStringGetLength(json)), 0);
 608     CFStringFindAndReplace(json, CFSTR("\""), CFSTR("\\\""), CFRangeMake(0, CFStringGetLength(json)), 0);
 609     CFStringFindAndReplace(json, CFSTR("\t"), CFSTR("\\t"), CFRangeMake(0, CFStringGetLength(json)), 0);
 610     CFStringFindAndReplace(json, CFSTR("\r"), CFSTR("\\r"), CFRangeMake(0, CFStringGetLength(json)), 0);
 611     CFStringFindAndReplace(json, CFSTR("\n"), CFSTR("\\n"), CFRangeMake(0, CFStringGetLength(json)), 0);
 612
 613     CFStringInsert(json, 0, CFSTR("\""));
 614     CFStringAppend(json, CFSTR("\""));
 615
 616     return [reinterpret_cast<const NSString *>(json) autorelease];
 617 }
 618
 619 - (void *) cy$symbol {
 620     CYPool pool;
 621     return dlsym(RTLD_DEFAULT, CYPoolCString(pool, self));
 622 }
 623
 624 @end
 625
 626 @interface CYJSObject : NSDictionary {
 627     JSObjectRef object_;
 628     JSContextRef context_;
 629 }
 630
 631 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 632
 633 - (NSUInteger) count;
 634 - (id) objectForKey:(id)key;
 635 - (NSEnumerator *) keyEnumerator;
 636 - (void) setObject:(id)object forKey:(id)key;
 637 - (void) removeObjectForKey:(id)key;
 638
 639 @end
 640
 641 @interface CYJSArray : NSArray {
 642     JSObjectRef object_;
 643     JSContextRef context_;
 644 }
 645
 646 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context;
 647
 648 - (NSUInteger) count;
 649 - (id) objectAtIndex:(NSUInteger)index;
 650
 651 @end
 652
 653 CYRange WordStartRange_(0x1000000000LLU,0x7fffffe87fffffeLLU); // A-Za-z_$
 654 CYRange WordEndRange_(0x3ff001000000000LLU,0x7fffffe87fffffeLLU); // A-Za-z_$0-9
 655
 656 JSGlobalContextRef CYGetJSContext() {
 657     return Context_;
 658 }
 659
 660 #define CYTry \
 661     @try
 662 #define CYCatch \
 663     @catch (id error) { \
 664         CYThrow(context, error, exception); \
 665         return NULL; \
 666     }
 667
 668 void CYThrow(JSContextRef context, JSValueRef value);
 669
 670 apr_status_t CYPoolRelease_(void *data) {
 671     id object(reinterpret_cast<id>(data));
 672     [object release];
 673     return APR_SUCCESS;
 674 }
 675
 676 id CYPoolRelease(apr_pool_t *pool, id object) {
 677     if (pool == NULL)
 678         return [object autorelease];
 679     else {
 680         apr_pool_cleanup_register(pool, object, &CYPoolRelease_, &apr_pool_cleanup_null);
 681         return object;
 682     }
 683 }
 684
 685 CFTypeRef CYPoolRelease(apr_pool_t *pool, CFTypeRef object) {
 686     return (CFTypeRef) CYPoolRelease(pool, (id) object);
 687 }
 688
 689 id CYCastNSObject(apr_pool_t *pool, JSContextRef context, JSObjectRef object) {
 690     if (JSValueIsObjectOfClass(context, object, Instance_)) {
 691         Instance_privateData *data(reinterpret_cast<Instance_privateData *>(JSObjectGetPrivate(object)));
 692         return data->GetValue();
 693     }
 694
 695     JSValueRef exception(NULL);
 696     bool array(JSValueIsInstanceOfConstructor(context, object, Array_, &exception));
 697     CYThrow(context, exception);
 698     id value(array ? [CYJSArray alloc] : [CYJSObject alloc]);
 699     return CYPoolRelease(pool, [value initWithJSObject:object inContext:context]);
 700 }
 701
 702 JSStringRef CYCopyJSString(id value) {
 703     return value == NULL ? NULL : JSStringCreateWithCFString(reinterpret_cast<CFStringRef>([value description]));
 704 }
 705
 706 JSStringRef CYCopyJSString(const char *value) {
 707     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 708 }
 709
 710 JSStringRef CYCopyJSString(JSStringRef value) {
 711     return value == NULL ? NULL : JSStringRetain(value);
 712 }
 713
 714 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 715     if (JSValueIsNull(context, value))
 716         return NULL;
 717     JSValueRef exception(NULL);
 718     JSStringRef string(JSValueToStringCopy(context, value, &exception));
 719     CYThrow(context, exception);
 720     return string;
 721 }
 722
 723 class CYJSString {
 724   private:
 725     JSStringRef string_;
 726
 727     void Clear_() {
 728         JSStringRelease(string_);
 729     }
 730
 731   public:
 732     CYJSString(const CYJSString &rhs) :
 733         string_(CYCopyJSString(rhs.string_))
 734     {
 735     }
 736
 737     template <typename Arg0_>
 738     CYJSString(Arg0_ arg0) :
 739         string_(CYCopyJSString(arg0))
 740     {
 741     }
 742
 743     template <typename Arg0_, typename Arg1_>
 744     CYJSString(Arg0_ arg0, Arg1_ arg1) :
 745         string_(CYCopyJSString(arg0, arg1))
 746     {
 747     }
 748
 749     CYJSString &operator =(const CYJSString &rhs) {
 750         Clear_();
 751         string_ = CYCopyJSString(rhs.string_);
 752         return *this;
 753     }
 754
 755     ~CYJSString() {
 756         Clear_();
 757     }
 758
 759     void Clear() {
 760         Clear_();
 761         string_ = NULL;
 762     }
 763
 764     operator JSStringRef() const {
 765         return string_;
 766     }
 767 };
 768
 769 CFStringRef CYCopyCFString(JSStringRef value) {
 770     return JSStringCopyCFString(kCFAllocatorDefault, value);
 771 }
 772
 773 CFStringRef CYCopyCFString(JSContextRef context, JSValueRef value) {
 774     return CYCopyCFString(CYJSString(context, value));
 775 }
 776
 777 double CYCastDouble(const char *value, size_t size) {
 778     char *end;
 779     double number(strtod(value, &end));
 780     if (end != value + size)
 781         return NAN;
 782     return number;
 783 }
 784
 785 double CYCastDouble(const char *value) {
 786     return CYCastDouble(value, strlen(value));
 787 }
 788
 789 double CYCastDouble(JSContextRef context, JSValueRef value) {
 790     JSValueRef exception(NULL);
 791     double number(JSValueToNumber(context, value, &exception));
 792     CYThrow(context, exception);
 793     return number;
 794 }
 795
 796 CFNumberRef CYCopyCFNumber(JSContextRef context, JSValueRef value) {
 797     double number(CYCastDouble(context, value));
 798     return CFNumberCreate(kCFAllocatorDefault, kCFNumberDoubleType, &number);
 799 }
 800
 801 CFStringRef CYCopyCFString(const char *value) {
 802     return CFStringCreateWithCString(kCFAllocatorDefault, value, kCFStringEncodingUTF8);
 803 }
 804
 805 NSString *CYCastNSString(apr_pool_t *pool, const char *value) {
 806     return (NSString *) CYPoolRelease(pool, CYCopyCFString(value));
 807 }
 808
 809 NSString *CYCastNSString(apr_pool_t *pool, JSStringRef value) {
 810     return (NSString *) CYPoolRelease(pool, CYCopyCFString(value));
 811 }
 812
 813 bool CYCastBool(JSContextRef context, JSValueRef value) {
 814     return JSValueToBoolean(context, value);
 815 }
 816
 817 CFTypeRef CYCFType(apr_pool_t *pool, JSContextRef context, JSValueRef value, bool cast) {
 818     CFTypeRef object;
 819     bool copy;
 820
 821     switch (JSType type = JSValueGetType(context, value)) {
 822         case kJSTypeUndefined:
 823             object = [WebUndefined undefined];
 824             copy = false;
 825         break;
 826
 827         case kJSTypeNull:
 828             return NULL;
 829         break;
 830
 831         case kJSTypeBoolean:
 832             object = CYCastBool(context, value) ? kCFBooleanTrue : kCFBooleanFalse;
 833             copy = false;
 834         break;
 835
 836         case kJSTypeNumber:
 837             object = CYCopyCFNumber(context, value);
 838             copy = true;
 839         break;
 840
 841         case kJSTypeString:
 842             object = CYCopyCFString(context, value);
 843             copy = true;
 844         break;
 845
 846         case kJSTypeObject:
 847             // XXX: this might could be more efficient
 848             object = (CFTypeRef) CYCastNSObject(pool, context, (JSObjectRef) value);
 849             copy = false;
 850         break;
 851
 852         default:
 853             @throw [NSException exceptionWithName:NSInternalInconsistencyException reason:[NSString stringWithFormat:@"JSValueGetType() == 0x%x", type] userInfo:nil];
 854         break;
 855     }
 856
 857     if (cast != copy)
 858         return object;
 859     else if (copy)
 860         return CYPoolRelease(pool, object);
 861     else
 862         return CFRetain(object);
 863 }
 864
 865 CFTypeRef CYCastCFType(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 866     return CYCFType(pool, context, value, true);
 867 }
 868
 869 CFTypeRef CYCopyCFType(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 870     return CYCFType(pool, context, value, false);
 871 }
 872
 873 NSArray *CYCastNSArray(JSPropertyNameArrayRef names) {
 874     CYPool pool;
 875     size_t size(JSPropertyNameArrayGetCount(names));
 876     NSMutableArray *array([NSMutableArray arrayWithCapacity:size]);
 877     for (size_t index(0); index != size; ++index)
 878         [array addObject:CYCastNSString(pool, JSPropertyNameArrayGetNameAtIndex(names, index))];
 879     return array;
 880 }
 881
 882 id CYCastNSObject(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 883     return reinterpret_cast<const NSObject *>(CYCastCFType(pool, context, value));
 884 }
 885
 886 void CYThrow(JSContextRef context, JSValueRef value) {
 887     if (value == NULL)
 888         return;
 889     @throw CYCastNSObject(NULL, context, value);
 890 }
 891
 892 JSValueRef CYJSNull(JSContextRef context) {
 893     return JSValueMakeNull(context);
 894 }
 895
 896 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 897     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 898 }
 899
 900 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 901     return CYCastJSValue(context, CYJSString(value));
 902 }
 903
 904 JSValueRef CYCastJSValue(JSContextRef context, id value, bool transient = true) {
 905     return value == nil ? CYJSNull(context) : [value cy$JSValueInContext:context transient:transient];
 906 }
 907
 908 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 909     JSValueRef exception(NULL);
 910     JSObjectRef object(JSValueToObject(context, value, &exception));
 911     CYThrow(context, exception);
 912     return object;
 913 }
 914
 915 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
 916     JSValueRef exception(NULL);
 917     JSValueRef value(JSObjectGetPropertyAtIndex(context, object, index, &exception));
 918     CYThrow(context, exception);
 919     return value;
 920 }
 921
 922 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
 923     JSValueRef exception(NULL);
 924     JSValueRef value(JSObjectGetProperty(context, object, name, &exception));
 925     CYThrow(context, exception);
 926     return value;
 927 }
 928
 929 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value) {
 930     JSValueRef exception(NULL);
 931     JSObjectSetProperty(context, object, name, value, kJSPropertyAttributeNone, &exception);
 932     CYThrow(context, exception);
 933 }
 934
 935 void CYThrow(JSContextRef context, id error, JSValueRef *exception) {
 936     if (exception == NULL)
 937         throw error;
 938     *exception = CYCastJSValue(context, error);
 939 }
 940
 941 @implementation CYJSObject
 942
 943 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context {
 944     if ((self = [super init]) != nil) {
 945         object_ = object;
 946         context_ = context;
 947     } return self;
 948 }
 949
 950 - (NSUInteger) count {
 951     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context_, object_));
 952     size_t size(JSPropertyNameArrayGetCount(names));
 953     JSPropertyNameArrayRelease(names);
 954     return size;
 955 }
 956
 957 - (id) objectForKey:(id)key {
 958     return CYCastNSObject(NULL, context_, CYGetProperty(context_, object_, CYJSString(key))) ?: [NSNull null];
 959 }
 960
 961 - (NSEnumerator *) keyEnumerator {
 962     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context_, object_));
 963     NSEnumerator *enumerator([CYCastNSArray(names) objectEnumerator]);
 964     JSPropertyNameArrayRelease(names);
 965     return enumerator;
 966 }
 967
 968 - (void) setObject:(id)object forKey:(id)key {
 969     CYSetProperty(context_, object_, CYJSString(key), CYCastJSValue(context_, object));
 970 }
 971
 972 - (void) removeObjectForKey:(id)key {
 973     JSValueRef exception(NULL);
 974     // XXX: this returns a bool... throw exception, or ignore?
 975     JSObjectDeleteProperty(context_, object_, CYJSString(key), &exception);
 976     CYThrow(context_, exception);
 977 }
 978
 979 @end
 980
 981 @implementation CYJSArray
 982
 983 - (id) initWithJSObject:(JSObjectRef)object inContext:(JSContextRef)context {
 984     if ((self = [super init]) != nil) {
 985         object_ = object;
 986         context_ = context;
 987     } return self;
 988 }
 989
 990 - (NSUInteger) count {
 991     return CYCastDouble(context_, CYGetProperty(context_, object_, length_));
 992 }
 993
 994 - (id) objectAtIndex:(NSUInteger)index {
 995     JSValueRef exception(NULL);
 996     JSValueRef value(JSObjectGetPropertyAtIndex(context_, object_, index, &exception));
 997     CYThrow(context_, exception);
 998     return CYCastNSObject(NULL, context_, value) ?: [NSNull null];
 999 }
1000
1001 @end
1002
1003 CFStringRef CYCopyJSONString(JSContextRef context, JSValueRef value, JSValueRef *exception) {
1004     CYTry {
1005         CYPoolTry {
1006             id object(CYCastNSObject(NULL, context, value));
1007             return reinterpret_cast<CFStringRef>([(object == nil ? @"null" : [object cy$toJSON]) retain]);
1008         } CYPoolCatch(NULL)
1009     } CYCatch
1010 }
1011
1012 const char *CYPoolJSONString(apr_pool_t *pool, JSContextRef context, JSValueRef value, JSValueRef *exception) {
1013     if (NSString *json = (NSString *) CYCopyJSONString(context, value, exception)) {
1014         const char *string(CYPoolCString(pool, json));
1015         [json release];
1016         return string;
1017     } else return NULL;
1018 }
1019
1020 static void OnData(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address, const void *value, void *info) {
1021     switch (type) {
1022         case kCFSocketDataCallBack:
1023             CFDataRef data(reinterpret_cast<CFDataRef>(value));
1024             Client *client(reinterpret_cast<Client *>(info));
1025
1026             if (client->message_ == NULL)
1027                 client->message_ = CFHTTPMessageCreateEmpty(kCFAllocatorDefault, TRUE);
1028
1029             if (!CFHTTPMessageAppendBytes(client->message_, CFDataGetBytePtr(data), CFDataGetLength(data)))
1030                 CFLog(kCFLogLevelError, CFSTR("CFHTTPMessageAppendBytes()"));
1031             else if (CFHTTPMessageIsHeaderComplete(client->message_)) {
1032                 CFURLRef url(CFHTTPMessageCopyRequestURL(client->message_));
1033                 Boolean absolute;
1034                 CFStringRef path(CFURLCopyStrictPath(url, &absolute));
1035                 CFRelease(client->message_);
1036
1037                 CFStringRef code(CFURLCreateStringByReplacingPercentEscapes(kCFAllocatorDefault, path, CFSTR("")));
1038                 CFRelease(path);
1039
1040                 JSStringRef script(JSStringCreateWithCFString(code));
1041                 CFRelease(code);
1042
1043                 JSValueRef result(JSEvaluateScript(CYGetJSContext(), script, NULL, NULL, 0, NULL));
1044                 JSStringRelease(script);
1045
1046                 CFHTTPMessageRef response(CFHTTPMessageCreateResponse(kCFAllocatorDefault, 200, NULL, kCFHTTPVersion1_1));
1047                 CFHTTPMessageSetHeaderFieldValue(response, CFSTR("Content-Type"), CFSTR("application/json; charset=utf-8"));
1048
1049                 CFStringRef json(CYCopyJSONString(CYGetJSContext(), result, NULL));
1050                 CFDataRef body(CFStringCreateExternalRepresentation(kCFAllocatorDefault, json, kCFStringEncodingUTF8, NULL));
1051                 CFRelease(json);
1052
1053                 CFStringRef length(CFStringCreateWithFormat(kCFAllocatorDefault, NULL, CFSTR("%u"), CFDataGetLength(body)));
1054                 CFHTTPMessageSetHeaderFieldValue(response, CFSTR("Content-Length"), length);
1055                 CFRelease(length);
1056
1057                 CFHTTPMessageSetBody(response, body);
1058                 CFRelease(body);
1059
1060                 CFDataRef serialized(CFHTTPMessageCopySerializedMessage(response));
1061                 CFRelease(response);
1062
1063                 CFSocketSendData(socket, NULL, serialized, 0);
1064                 CFRelease(serialized);
1065
1066                 CFRelease(url);
1067             }
1068         break;
1069     }
1070 }
1071
1072 static void OnAccept(CFSocketRef socket, CFSocketCallBackType type, CFDataRef address, const void *value, void *info) {
1073     switch (type) {
1074         case kCFSocketAcceptCallBack:
1075             Client *client(new Client());
1076
1077             client->message_ = NULL;
1078
1079             CFSocketContext context;
1080             context.version = 0;
1081             context.info = client;
1082             context.retain = NULL;
1083             context.release = NULL;
1084             context.copyDescription = NULL;
1085
1086             client->socket_ = CFSocketCreateWithNative(kCFAllocatorDefault, *reinterpret_cast<const CFSocketNativeHandle *>(value), kCFSocketDataCallBack, &OnData, &context);
1087
1088             CFRunLoopAddSource(CFRunLoopGetCurrent(), CFSocketCreateRunLoopSource(kCFAllocatorDefault, client->socket_, 0), kCFRunLoopDefaultMode);
1089         break;
1090     }
1091 }
1092
1093 static JSValueRef Instance_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
1094     CYTry {
1095         CYPool pool;
1096         NSString *self(CYCastNSObject(pool, context, object));
1097         NSString *name(CYCastNSString(pool, property));
1098         NSObject *data([self cy$getProperty:name]);
1099         return data == nil ? NULL : CYCastJSValue(context, data);
1100     } CYCatch
1101 }
1102
1103 static bool Instance_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) {
1104     CYTry {
1105         CYPool pool;
1106         NSString *self(CYCastNSObject(pool, context, object));
1107         NSString *name(CYCastNSString(pool, property));
1108         NSString *data(CYCastNSObject(pool, context, value));
1109         return [self cy$setProperty:name to:data];
1110     } CYCatch
1111 }
1112
1113 static bool Instance_deleteProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
1114     CYTry {
1115         CYPool pool;
1116         NSString *self(CYCastNSObject(pool, context, object));
1117         NSString *name(CYCastNSString(pool, property));
1118         return [self cy$deleteProperty:name];
1119     } CYCatch
1120 }
1121
1122 static JSObjectRef Instance_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1123     CYTry {
1124         Instance_privateData *data(reinterpret_cast<Instance_privateData *>(JSObjectGetPrivate(object)));
1125         return CYMakeInstance(context, [data->GetValue() alloc], true);
1126     } CYCatch
1127 }
1128
1129 JSObjectRef CYMakeSelector(JSContextRef context, SEL sel) {
1130     Selector_privateData *data(new Selector_privateData(sel));
1131     return JSObjectMake(context, Selector_, data);
1132 }
1133
1134 JSObjectRef CYMakePointer(JSContextRef context, void *pointer) {
1135     Pointer_privateData *data(new Pointer_privateData(pointer));
1136     return JSObjectMake(context, Pointer_, data);
1137 }
1138
1139 JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const char *type) {
1140     Functor_privateData *data(new Functor_privateData(type, function));
1141     return JSObjectMake(context, Functor_, data);
1142 }
1143
1144 const char *CYPoolCString(apr_pool_t *pool, JSStringRef value, size_t *length = NULL) {
1145     if (pool == NULL) {
1146         const char *string([CYCastNSString(NULL, value) UTF8String]);
1147         if (length != NULL)
1148             *length = strlen(string);
1149         return string;
1150     } else {
1151         size_t size(JSStringGetMaximumUTF8CStringSize(value));
1152         char *string(new(pool) char[size]);
1153         JSStringGetUTF8CString(value, string, size);
1154         // XXX: this is ironic
1155         if (length != NULL)
1156             *length = strlen(string);
1157         return string;
1158     }
1159 }
1160
1161 const char *CYPoolCString(apr_pool_t *pool, JSContextRef context, JSValueRef value, size_t *length = NULL) {
1162     if (!JSValueIsNull(context, value))
1163         return CYPoolCString(pool, CYJSString(context, value), length);
1164     else {
1165         if (length != NULL)
1166             *length = 0;
1167         return NULL;
1168     }
1169 }
1170
1171 // XXX: this macro is unhygenic
1172 #define CYCastCString(context, value) ({ \
1173     char *utf8; \
1174     if (value == NULL) \
1175         utf8 = NULL; \
1176     else if (JSStringRef string = CYCopyJSString(context, value)) { \
1177         size_t size(JSStringGetMaximumUTF8CStringSize(string)); \
1178         utf8 = reinterpret_cast<char *>(alloca(size)); \
1179         JSStringGetUTF8CString(string, utf8, size); \
1180         JSStringRelease(string); \
1181     } else \
1182         utf8 = NULL; \
1183     utf8; \
1184 })
1185
1186 SEL CYCastSEL(JSContextRef context, JSValueRef value) {
1187     if (JSValueIsNull(context, value))
1188         return NULL;
1189     else if (JSValueIsObjectOfClass(context, value, Selector_)) {
1190         Selector_privateData *data(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate((JSObjectRef) value)));
1191         return reinterpret_cast<SEL>(data->value_);
1192     } else
1193         return sel_registerName(CYCastCString(context, value));
1194 }
1195
1196 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
1197     switch (JSValueGetType(context, value)) {
1198         case kJSTypeNull:
1199             return NULL;
1200         /*case kJSTypeString:
1201             return dlsym(RTLD_DEFAULT, CYCastCString(context, value));
1202         case kJSTypeObject:
1203             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
1204                 Pointer_privateData *data(reinterpret_cast<Pointer_privateData *>(JSObjectGetPrivate((JSObjectRef) value)));
1205                 return data->value_;
1206             }*/
1207         default:
1208             double number(CYCastDouble(context, value));
1209             if (std::isnan(number))
1210                 @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"cannot convert value to pointer" userInfo:nil];
1211             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
1212     }
1213 }
1214
1215 template <typename Type_>
1216 _finline Type_ CYCastPointer(JSContextRef context, JSValueRef value) {
1217     return reinterpret_cast<Type_>(CYCastPointer_(context, value));
1218 }
1219
1220 void CYPoolFFI(apr_pool_t *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
1221     switch (type->primitive) {
1222         case sig::boolean_P:
1223             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
1224         break;
1225
1226 #define CYPoolFFI_(primitive, native) \
1227         case sig::primitive ## _P: \
1228             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
1229         break;
1230
1231         CYPoolFFI_(uchar, unsigned char)
1232         CYPoolFFI_(char, char)
1233         CYPoolFFI_(ushort, unsigned short)
1234         CYPoolFFI_(short, short)
1235         CYPoolFFI_(ulong, unsigned long)
1236         CYPoolFFI_(long, long)
1237         CYPoolFFI_(uint, unsigned int)
1238         CYPoolFFI_(int, int)
1239         CYPoolFFI_(ulonglong, unsigned long long)
1240         CYPoolFFI_(longlong, long long)
1241         CYPoolFFI_(float, float)
1242         CYPoolFFI_(double, double)
1243
1244         case sig::object_P:
1245         case sig::typename_P:
1246             *reinterpret_cast<id *>(data) = CYCastNSObject(pool, context, value);
1247         break;
1248
1249         case sig::selector_P:
1250             *reinterpret_cast<SEL *>(data) = CYCastSEL(context, value);
1251         break;
1252
1253         case sig::pointer_P:
1254             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
1255         break;
1256
1257         case sig::string_P:
1258             *reinterpret_cast<const char **>(data) = CYPoolCString(pool, context, value);
1259         break;
1260
1261         case sig::struct_P: {
1262             uint8_t *base(reinterpret_cast<uint8_t *>(data));
1263             bool aggregate(JSValueIsObject(context, value));
1264             for (size_t index(0); index != type->data.signature.count; ++index) {
1265                 ffi_type *element(ffi->elements[index]);
1266                 JSValueRef rhs(aggregate ? CYGetProperty(context, (JSObjectRef) value, index) : value);
1267                 CYPoolFFI(pool, context, type->data.signature.elements[index].type, element, base, rhs);
1268                 // XXX: alignment?
1269                 base += element->size;
1270             }
1271         } break;
1272
1273         case sig::void_P:
1274         break;
1275
1276         default:
1277             NSLog(@"CYPoolFFI(%c)\n", type->primitive);
1278             _assert(false);
1279     }
1280 }
1281
1282 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSObjectRef owner = NULL) {
1283     JSValueRef value;
1284
1285     switch (type->primitive) {
1286         case sig::boolean_P:
1287             value = CYCastJSValue(context, *reinterpret_cast<bool *>(data));
1288         break;
1289
1290 #define CYFromFFI_(primitive, native) \
1291         case sig::primitive ## _P: \
1292             value = CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
1293         break;
1294
1295         CYFromFFI_(uchar, unsigned char)
1296         CYFromFFI_(char, char)
1297         CYFromFFI_(ushort, unsigned short)
1298         CYFromFFI_(short, short)
1299         CYFromFFI_(ulong, unsigned long)
1300         CYFromFFI_(long, long)
1301         CYFromFFI_(uint, unsigned int)
1302         CYFromFFI_(int, int)
1303         CYFromFFI_(ulonglong, unsigned long long)
1304         CYFromFFI_(longlong, long long)
1305         CYFromFFI_(float, float)
1306         CYFromFFI_(double, double)
1307
1308         case sig::object_P:
1309             value = CYCastJSValue(context, *reinterpret_cast<id *>(data));
1310         break;
1311
1312         case sig::typename_P:
1313             value = CYMakeInstance(context, *reinterpret_cast<Class *>(data), true);
1314         break;
1315
1316         case sig::selector_P:
1317             if (SEL sel = *reinterpret_cast<SEL *>(data))
1318                 value = CYMakeSelector(context, sel);
1319             else goto null;
1320         break;
1321
1322         case sig::pointer_P:
1323             if (void *pointer = *reinterpret_cast<void **>(data))
1324                 value = CYMakePointer(context, pointer);
1325             else goto null;
1326         break;
1327
1328         case sig::string_P:
1329             if (char *utf8 = *reinterpret_cast<char **>(data))
1330                 value = CYCastJSValue(context, utf8);
1331             else goto null;
1332         break;
1333
1334         case sig::struct_P:
1335             value = CYMakeStruct(context, data, type, ffi, owner);
1336         break;
1337
1338         case sig::void_P:
1339             value = CYJSUndefined(context);
1340         break;
1341
1342         null:
1343             value = CYJSNull(context);
1344         break;
1345
1346         default:
1347             NSLog(@"CYFromFFI(%c)\n", type->primitive);
1348             _assert(false);
1349     }
1350
1351     return value;
1352 }
1353
1354 bool Index_(apr_pool_t *pool, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
1355     Type_privateData *typical(internal->type_);
1356
1357     size_t length;
1358     const char *name(CYPoolCString(pool, property, &length));
1359     double number(CYCastDouble(name, length));
1360
1361     if (std::isnan(number))
1362         // XXX: implement!
1363         return false;
1364
1365     index = static_cast<ssize_t>(number);
1366     if (index != number || index < 0 || static_cast<size_t>(index) >= typical->type_.data.signature.count)
1367         return false;
1368
1369     base = reinterpret_cast<uint8_t *>(internal->value_);
1370     for (ssize_t local(0); local != index; ++local)
1371         base += typical->ffi_.elements[local]->size;
1372
1373     return true;
1374 }
1375
1376 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
1377     CYTry {
1378         CYPool pool;
1379         Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1380         Type_privateData *typical(internal->type_);
1381
1382         ssize_t index;
1383         uint8_t *base;
1384
1385         if (!Index_(pool, internal, property, index, base))
1386             return NULL;
1387
1388         return CYFromFFI(context, typical->type_.data.signature.elements[index].type, typical->ffi_.elements[index], base, object);
1389     } CYCatch
1390 }
1391
1392 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) {
1393     CYTry {
1394         CYPool pool;
1395         Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1396         Type_privateData *typical(internal->type_);
1397
1398         ssize_t index;
1399         uint8_t *base;
1400
1401         if (!Index_(pool, internal, property, index, base))
1402             return false;
1403
1404         CYPoolFFI(NULL, context, typical->type_.data.signature.elements[index].type, typical->ffi_.elements[index], base, value);
1405         return true;
1406     } CYCatch
1407 }
1408
1409 static JSValueRef CYCallFunction(JSContextRef context, size_t count, const JSValueRef *arguments, JSValueRef *exception, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
1410     CYTry {
1411         if (count != signature->count - 1)
1412             @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"incorrect number of arguments to ffi function" userInfo:nil];
1413
1414         CYPool pool;
1415         void *values[count];
1416
1417         for (unsigned index(0); index != count; ++index) {
1418             sig::Element *element(&signature->elements[index + 1]);
1419             ffi_type *ffi(cif->arg_types[index]);
1420             // XXX: alignment?
1421             values[index] = new(pool) uint8_t[ffi->size];
1422             CYPoolFFI(pool, context, element->type, ffi, values[index], arguments[index]);
1423         }
1424
1425         uint8_t value[cif->rtype->size];
1426         ffi_call(cif, function, value, values);
1427
1428         return CYFromFFI(context, signature->elements[0].type, cif->rtype, value);
1429     } CYCatch
1430 }
1431
1432 void Closure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
1433     ffoData *data(reinterpret_cast<ffoData *>(arg));
1434
1435     JSContextRef context(data->context_);
1436
1437     size_t count(data->cif_.nargs);
1438     JSValueRef values[count];
1439
1440     for (size_t index(0); index != count; ++index)
1441         values[index] = CYFromFFI(context, data->signature_.elements[1 + index].type, data->cif_.arg_types[index], arguments[index]);
1442
1443     JSValueRef exception(NULL);
1444     JSValueRef value(JSObjectCallAsFunction(context, data->function_, NULL, count, values, &exception));
1445     CYThrow(context, exception);
1446
1447     CYPoolFFI(NULL, context, data->signature_.elements[0].type, data->cif_.rtype, result, value);
1448 }
1449
1450 JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const char *type) {
1451     // XXX: in case of exceptions this will leak
1452     ffoData *data(new ffoData(type));
1453
1454     ffi_closure *closure;
1455     _syscall(closure = (ffi_closure *) mmap(
1456         NULL, sizeof(ffi_closure),
1457         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
1458         -1, 0
1459     ));
1460
1461     ffi_status status(ffi_prep_closure(closure, &data->cif_, &Closure_, data));
1462     _assert(status == FFI_OK);
1463
1464     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
1465
1466     data->value_ = closure;
1467
1468     data->context_ = CYGetJSContext();
1469     data->function_ = function;
1470
1471     return JSObjectMake(context, Functor_, data);
1472 }
1473
1474 static JSValueRef Runtime_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
1475     CYTry {
1476         CYPool pool;
1477         NSString *name(CYCastNSString(pool, property));
1478         if (Class _class = NSClassFromString(name))
1479             return CYMakeInstance(context, _class, true);
1480         if (NSMutableArray *entry = [[Bridge_ objectAtIndex:0] objectForKey:name])
1481             switch ([[entry objectAtIndex:0] intValue]) {
1482                 case 0:
1483                     return JSEvaluateScript(CYGetJSContext(), CYJSString([entry objectAtIndex:1]), NULL, NULL, 0, NULL);
1484                 case 1:
1485                     return CYMakeFunctor(context, reinterpret_cast<void (*)()>([name cy$symbol]), CYPoolCString(pool, [entry objectAtIndex:1]));
1486                 case 2:
1487                     // XXX: this is horrendously inefficient
1488                     sig::Signature signature;
1489                     sig::Parse(pool, &signature, CYPoolCString(pool, [entry objectAtIndex:1]));
1490                     ffi_cif cif;
1491                     sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1492                     return CYFromFFI(context, signature.elements[0].type, cif.rtype, [name cy$symbol]);
1493             }
1494         return NULL;
1495     } CYCatch
1496 }
1497
1498 bool stret(ffi_type *ffi_type) {
1499     return ffi_type->type == FFI_TYPE_STRUCT && (
1500         ffi_type->size > OBJC_MAX_STRUCT_BY_VALUE ||
1501         struct_forward_array[ffi_type->size] != 0
1502     );
1503 }
1504
1505 extern "C" {
1506     int *_NSGetArgc(void);
1507     char ***_NSGetArgv(void);
1508     int UIApplicationMain(int argc, char *argv[], NSString *principalClassName, NSString *delegateClassName);
1509 }
1510
1511 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1512     CYTry {
1513         NSLog(@"%s", CYCastCString(context, arguments[0]));
1514         return CYJSUndefined(context);
1515     } CYCatch
1516 }
1517
1518 static JSValueRef CYApplicationMain(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1519     CYTry {
1520         CYPool pool;
1521         NSString *name(CYCastNSObject(pool, context, arguments[0]));
1522         int argc(*_NSGetArgc());
1523         char **argv(*_NSGetArgv());
1524         for (int i(0); i != argc; ++i)
1525             NSLog(@"argv[%i]=%s", i, argv[i]);
1526         _pooled
1527         return CYCastJSValue(context, UIApplicationMain(argc, argv, name, name));
1528     } CYCatch
1529 }
1530
1531 static JSValueRef $objc_msgSend(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1532     const char *type;
1533
1534     CYPool pool;
1535
1536     CYTry {
1537         if (count < 2)
1538             @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"too few arguments to objc_msgSend" userInfo:nil];
1539
1540         id self(CYCastNSObject(pool, context, arguments[0]));
1541         if (self == nil)
1542             return CYJSNull(context);
1543
1544         SEL _cmd(CYCastSEL(context, arguments[1]));
1545
1546         Class _class(object_getClass(self));
1547         if (Method method = class_getInstanceMethod(_class, _cmd))
1548             type = method_getTypeEncoding(method);
1549         else {
1550             CYPoolTry {
1551                 NSMethodSignature *method([self methodSignatureForSelector:_cmd]);
1552                 if (method == nil)
1553                     @throw [NSException exceptionWithName:NSInvalidArgumentException reason:[NSString stringWithFormat:@"unrecognized selector %s sent to object %p", sel_getName(_cmd), self] userInfo:nil];
1554                 type = CYPoolCString(pool, [method _typeString]);
1555             } CYPoolCatch(NULL)
1556         }
1557     } CYCatch
1558
1559     sig::Signature signature;
1560     sig::Parse(pool, &signature, type);
1561
1562     ffi_cif cif;
1563     sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1564
1565     void (*function)() = stret(cif.rtype) ? reinterpret_cast<void (*)()>(&objc_msgSend_stret) : reinterpret_cast<void (*)()>(&objc_msgSend);
1566     return CYCallFunction(context, count, arguments, exception, &signature, &cif, function);
1567 }
1568
1569 static JSValueRef Selector_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1570     JSValueRef setup[count + 2];
1571     setup[0] = _this;
1572     setup[1] = object;
1573     memmove(setup + 2, arguments, sizeof(JSValueRef) * count);
1574     return $objc_msgSend(context, NULL, NULL, count + 2, setup, exception);
1575 }
1576
1577 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1578     Functor_privateData *data(reinterpret_cast<Functor_privateData *>(JSObjectGetPrivate(object)));
1579     return CYCallFunction(context, count, arguments, exception, &data->signature_, &data->cif_, reinterpret_cast<void (*)()>(data->value_));
1580 }
1581
1582 JSObjectRef Selector_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1583     CYTry {
1584         if (count != 1)
1585             @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"incorrect number of arguments to Selector constructor" userInfo:nil];
1586         const char *name(CYCastCString(context, arguments[0]));
1587         return CYMakeSelector(context, sel_registerName(name));
1588     } CYCatch
1589 }
1590
1591 JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1592     CYTry {
1593         if (count != 2)
1594             @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"incorrect number of arguments to Functor constructor" userInfo:nil];
1595         const char *type(CYCastCString(context, arguments[1]));
1596         JSValueRef exception(NULL);
1597         if (JSValueIsInstanceOfConstructor(context, arguments[0], Function_, &exception)) {
1598             JSObjectRef function(CYCastJSObject(context, arguments[0]));
1599             return CYMakeFunctor(context, function, type);
1600         } else if (exception != NULL) {
1601             return NULL;
1602         } else {
1603             void (*function)()(CYCastPointer<void (*)()>(context, arguments[0]));
1604             return CYMakeFunctor(context, function, type);
1605         }
1606     } CYCatch
1607 }
1608
1609 JSValueRef Pointer_getProperty_value(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
1610     Pointer_privateData *data(reinterpret_cast<Pointer_privateData *>(JSObjectGetPrivate(object)));
1611     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(data->value_));
1612 }
1613
1614 JSValueRef Selector_getProperty_prototype(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
1615     return Function_;
1616 }
1617
1618 static JSValueRef Pointer_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1619     CYTry {
1620         Pointer_privateData *data(reinterpret_cast<Pointer_privateData *>(JSObjectGetPrivate(_this)));
1621         return CYCastJSValue(context, reinterpret_cast<uintptr_t>(data->value_));
1622     } CYCatch
1623 }
1624
1625 static JSValueRef Instance_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1626     CYTry {
1627         Instance_privateData *data(reinterpret_cast<Instance_privateData *>(JSObjectGetPrivate(_this)));
1628         CYPoolTry {
1629             return CYCastJSValue(context, CYJSString([data->GetValue() description]));
1630         } CYPoolCatch(NULL)
1631     } CYCatch
1632 }
1633
1634 static JSValueRef Selector_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1635     CYTry {
1636         Selector_privateData *data(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
1637         return CYCastJSValue(context, sel_getName(data->GetValue()));
1638     } CYCatch
1639 }
1640
1641 static JSValueRef Selector_callAsFunction_type(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1642     CYTry {
1643         if (count != 2)
1644             @throw [NSException exceptionWithName:NSInvalidArgumentException reason:@"incorrect number of arguments to Selector.type" userInfo:nil];
1645         CYPool pool;
1646         Selector_privateData *data(reinterpret_cast<Selector_privateData *>(JSObjectGetPrivate(_this)));
1647         Class _class(CYCastNSObject(pool, context, arguments[0]));
1648         bool instance(CYCastBool(context, arguments[1]));
1649         SEL sel(data->GetValue());
1650         if (Method method = (*(instance ? &class_getInstanceMethod : class_getClassMethod))(_class, sel))
1651             return CYCastJSValue(context, method_getTypeEncoding(method));
1652         else if (NSString *type = [[Bridge_ objectAtIndex:1] objectForKey:CYCastNSString(pool, sel_getName(sel))])
1653             return CYCastJSValue(context, CYJSString(type));
1654         else
1655             return CYJSNull(context);
1656     } CYCatch
1657 }
1658
1659 static JSStaticValue Pointer_staticValues[2] = {
1660     {"value", &Pointer_getProperty_value, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete},
1661     {NULL, NULL, NULL, 0}
1662 };
1663
1664 static JSStaticFunction Pointer_staticFunctions[2] = {
1665     {"valueOf", &Pointer_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1666     {NULL, NULL, 0}
1667 };
1668
1669 /*static JSStaticValue Selector_staticValues[2] = {
1670     {"prototype", &Selector_getProperty_prototype, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontDelete},
1671     {NULL, NULL, NULL, 0}
1672 };*/
1673
1674 static JSStaticFunction Instance_staticFunctions[2] = {
1675     {"toString", &Instance_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1676     {NULL, NULL, 0}
1677 };
1678
1679 static JSStaticFunction Selector_staticFunctions[3] = {
1680     {"toString", &Selector_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1681     {"type", &Selector_callAsFunction_type, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1682     {NULL, NULL, 0}
1683 };
1684
1685 CYDriver::CYDriver(const std::string &filename) :
1686     state_(CYClear),
1687     data_(NULL),
1688     size_(0),
1689     filename_(filename),
1690     source_(NULL)
1691 {
1692     ScannerInit();
1693 }
1694
1695 CYDriver::~CYDriver() {
1696     ScannerDestroy();
1697 }
1698
1699 void cy::parser::error(const cy::parser::location_type &location, const std::string &message) {
1700     CYDriver::Error error;
1701     error.location_ = location;
1702     error.message_ = message;
1703     driver.errors_.push_back(error);
1704 }
1705
1706 void CYSetArgs(int argc, const char *argv[]) {
1707     JSContextRef context(CYGetJSContext());
1708     JSValueRef args[argc];
1709     for (int i(0); i != argc; ++i)
1710         args[i] = CYCastJSValue(context, argv[i]);
1711     JSValueRef exception(NULL);
1712     JSObjectRef array(JSObjectMakeArray(context, argc, args, &exception));
1713     CYThrow(context, exception);
1714     CYSetProperty(context, System_, CYJSString("args"), array);
1715 }
1716
1717 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1718     return JSContextGetGlobalObject(context);
1719 }
1720
1721 MSInitialize { _pooled
1722     apr_initialize();
1723
1724     Bridge_ = [[NSMutableArray arrayWithContentsOfFile:@"/usr/lib/libcycript.plist"] retain];
1725
1726     NSCFBoolean_ = objc_getClass("NSCFBoolean");
1727
1728     pid_t pid(getpid());
1729
1730     struct sockaddr_in address;
1731     address.sin_len = sizeof(address);
1732     address.sin_family = AF_INET;
1733     address.sin_addr.s_addr = INADDR_ANY;
1734     address.sin_port = htons(10000 + pid);
1735
1736     CFDataRef data(CFDataCreate(kCFAllocatorDefault, reinterpret_cast<UInt8 *>(&address), sizeof(address)));
1737
1738     CFSocketSignature signature;
1739     signature.protocolFamily = AF_INET;
1740     signature.socketType = SOCK_STREAM;
1741     signature.protocol = IPPROTO_TCP;
1742     signature.address = data;
1743
1744     CFSocketRef socket(CFSocketCreateWithSocketSignature(kCFAllocatorDefault, &signature, kCFSocketAcceptCallBack, &OnAccept, NULL));
1745     CFRunLoopAddSource(CFRunLoopGetCurrent(), CFSocketCreateRunLoopSource(kCFAllocatorDefault, socket, 0), kCFRunLoopDefaultMode);
1746
1747     JSClassDefinition definition;
1748
1749     definition = kJSClassDefinitionEmpty;
1750     definition.className = "Pointer";
1751     definition.staticValues = Pointer_staticValues;
1752     definition.staticFunctions = Pointer_staticFunctions;
1753     definition.finalize = &CYData::Finalize;
1754     Pointer_ = JSClassCreate(&definition);
1755
1756     definition = kJSClassDefinitionEmpty;
1757     definition.className = "Functor";
1758     definition.staticValues = Pointer_staticValues;
1759     definition.staticFunctions = Pointer_staticFunctions;
1760     definition.callAsFunction = &Functor_callAsFunction;
1761     definition.finalize = &CYData::Finalize;
1762     Functor_ = JSClassCreate(&definition);
1763
1764     definition = kJSClassDefinitionEmpty;
1765     definition.className = "Struct";
1766     definition.getProperty = &Struct_getProperty;
1767     definition.setProperty = &Struct_setProperty;
1768     definition.finalize = &CYData::Finalize;
1769     Struct_ = JSClassCreate(&definition);
1770
1771     definition = kJSClassDefinitionEmpty;
1772     definition.className = "Selector";
1773     definition.staticValues = Pointer_staticValues;
1774     //definition.staticValues = Selector_staticValues;
1775     definition.staticFunctions = Selector_staticFunctions;
1776     definition.callAsFunction = &Selector_callAsFunction;
1777     definition.finalize = &CYData::Finalize;
1778     Selector_ = JSClassCreate(&definition);
1779
1780     definition = kJSClassDefinitionEmpty;
1781     definition.className = "Instance";
1782     definition.staticValues = Pointer_staticValues;
1783     definition.staticFunctions = Instance_staticFunctions;
1784     definition.getProperty = &Instance_getProperty;
1785     definition.setProperty = &Instance_setProperty;
1786     definition.deleteProperty = &Instance_deleteProperty;
1787     definition.callAsConstructor = &Instance_callAsConstructor;
1788     definition.finalize = &CYData::Finalize;
1789     Instance_ = JSClassCreate(&definition);
1790
1791     definition = kJSClassDefinitionEmpty;
1792     definition.className = "Runtime";
1793     definition.getProperty = &Runtime_getProperty;
1794     Runtime_ = JSClassCreate(&definition);
1795
1796     definition = kJSClassDefinitionEmpty;
1797     //definition.getProperty = &Global_getProperty;
1798     JSClassRef Global(JSClassCreate(&definition));
1799
1800     JSGlobalContextRef context(JSGlobalContextCreate(Global));
1801     Context_ = context;
1802
1803     JSObjectRef global(CYGetGlobalObject(context));
1804
1805     JSObjectSetPrototype(context, global, JSObjectMake(context, Runtime_, NULL));
1806     CYSetProperty(context, global, CYJSString("ObjectiveC"), JSObjectMake(context, Runtime_, NULL));
1807
1808     CYSetProperty(context, global, CYJSString("Selector"), JSObjectMakeConstructor(context, Selector_, &Selector_new));
1809     CYSetProperty(context, global, CYJSString("Functor"), JSObjectMakeConstructor(context, Functor_, &Functor_new));
1810
1811     CYSetProperty(context, global, CYJSString("CYApplicationMain"), JSObjectMakeFunctionWithCallback(context, CYJSString("CYApplicationMain"), &CYApplicationMain));
1812     CYSetProperty(context, global, CYJSString("objc_msgSend"), JSObjectMakeFunctionWithCallback(context, CYJSString("objc_msgSend"), &$objc_msgSend));
1813
1814     System_ = JSObjectMake(context, NULL, NULL);
1815     CYSetProperty(context, global, CYJSString("system"), System_);
1816     CYSetProperty(context, System_, CYJSString("args"), CYJSNull(context));
1817     //CYSetProperty(context, System_, CYJSString("global"), global);
1818
1819     CYSetProperty(context, System_, CYJSString("print"), JSObjectMakeFunctionWithCallback(context, CYJSString("print"), &System_print));
1820
1821     name_ = JSStringCreateWithUTF8CString("name");
1822     message_ = JSStringCreateWithUTF8CString("message");
1823     length_ = JSStringCreateWithUTF8CString("length");
1824
1825     Array_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array")));
1826     Function_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function")));
1827 }