Execute.cpp

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