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 "Parser.hpp"
  48
  49 #include "Decode.hpp"
  50 #include "Error.hpp"
  51 #include "JavaScript.hpp"
  52 #include "String.hpp"
  53
  54 struct CYHooks *hooks_;
  55
  56 /* JavaScript Properties {{{ */
  57 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  58     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  59 }
  60
  61 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  62     return _jsccall(JSObjectGetProperty, context, object, name);
  63 }
  64
  65 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  66     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  67 }
  68
  69 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  70     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  71 }
  72
  73 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  74     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  75 }
  76 /* }}} */
  77 /* JavaScript Strings {{{ */
  78 JSStringRef CYCopyJSString(const char *value) {
  79     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  80 }
  81
  82 JSStringRef CYCopyJSString(JSStringRef value) {
  83     return value == NULL ? NULL : JSStringRetain(value);
  84 }
  85
  86 JSStringRef CYCopyJSString(CYUTF8String value) {
  87     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
  88     return CYCopyJSString(value.data);
  89 }
  90
  91 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
  92     if (JSValueIsNull(context, value))
  93         return NULL;
  94     return _jsccall(JSValueToStringCopy, context, value);
  95 }
  96
  97 static CYUTF16String CYCastUTF16String(JSStringRef value) {
  98     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
  99 }
 100
 101 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 102     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 103 }
 104
 105 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 106     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 107     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 108     return utf8.data;
 109 }
 110
 111 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 112     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 113 }
 114 /* }}} */
 115 /* Index Offsets {{{ */
 116 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 117     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 118 }
 119 /* }}} */
 120
 121 static JSClassRef All_;
 122 static JSClassRef Context_;
 123 JSClassRef Functor_;
 124 static JSClassRef Global_;
 125 static JSClassRef Pointer_;
 126 static JSClassRef Struct_;
 127
 128 JSStringRef Array_s;
 129 JSStringRef cy_s;
 130 JSStringRef cyi_s;
 131 JSStringRef length_s;
 132 JSStringRef message_s;
 133 JSStringRef name_s;
 134 JSStringRef pop_s;
 135 JSStringRef prototype_s;
 136 JSStringRef push_s;
 137 JSStringRef splice_s;
 138 JSStringRef toCYON_s;
 139 JSStringRef toJSON_s;
 140 JSStringRef toPointer_s;
 141 JSStringRef toString_s;
 142
 143 static JSStringRef Result_;
 144
 145 void CYFinalize(JSObjectRef object) {
 146     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 147     _assert(internal->count_ != _not(unsigned));
 148     if (--internal->count_ == 0)
 149         delete internal;
 150 }
 151
 152 void Structor_(CYPool &pool, sig::Type *&type) {
 153     if (
 154         type->primitive == sig::pointer_P &&
 155         type->data.data.type != NULL &&
 156         type->data.data.type->primitive == sig::struct_P &&
 157         type->data.data.type->name != NULL &&
 158         strcmp(type->data.data.type->name, "_objc_class") == 0
 159     ) {
 160         type->primitive = sig::typename_P;
 161         type->data.data.type = NULL;
 162         return;
 163     }
 164
 165     if (type->primitive != sig::struct_P || type->name == NULL)
 166         return;
 167
 168     size_t length(strlen(type->name));
 169     char keyed[length + 2];
 170     memcpy(keyed + 1, type->name, length + 1);
 171
 172     static const char *modes = "34";
 173     for (size_t i(0); i != 2; ++i) {
 174         char mode(modes[i]);
 175         keyed[0] = mode;
 176
 177         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 178             switch (mode) {
 179                 case '3':
 180                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 181                 break;
 182
 183                 case '4': {
 184                     sig::Signature signature;
 185                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 186                     type = signature.elements[0].type;
 187                 } break;
 188             }
 189     }
 190 }
 191
 192 JSClassRef Type_privateData::Class_;
 193
 194 struct Context :
 195     CYData
 196 {
 197     JSGlobalContextRef context_;
 198
 199     Context(JSGlobalContextRef context) :
 200         context_(context)
 201     {
 202     }
 203 };
 204
 205 struct Pointer :
 206     CYOwned
 207 {
 208     Type_privateData *type_;
 209     size_t length_;
 210
 211     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 212         CYOwned(value, context, owner),
 213         type_(new(*pool_) Type_privateData(type)),
 214         length_(length)
 215     {
 216     }
 217 };
 218
 219 struct Struct_privateData :
 220     CYOwned
 221 {
 222     Type_privateData *type_;
 223
 224     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 225         CYOwned(NULL, context, owner)
 226     {
 227     }
 228 };
 229
 230 typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
 231 static TypeMap Types_;
 232
 233 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 234     Struct_privateData *internal(new Struct_privateData(context, owner));
 235     CYPool &pool(*internal->pool_);
 236     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 237     internal->type_ = typical;
 238
 239     if (owner != NULL)
 240         internal->value_ = data;
 241     else {
 242         size_t size(typical->GetFFI()->size);
 243         void *copy(internal->pool_->malloc<void>(size));
 244         memcpy(copy, data, size);
 245         internal->value_ = copy;
 246     }
 247
 248     return JSObjectMake(context, Struct_, internal);
 249 }
 250
 251 static void *CYCastSymbol(const char *name) {
 252     return dlsym(RTLD_DEFAULT, name);
 253 }
 254
 255 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 256     return JSValueMakeBoolean(context, value);
 257 }
 258
 259 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 260     return JSValueMakeNumber(context, value);
 261 }
 262
 263 #define CYCastJSValue_(Type_) \
 264     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 265         return JSValueMakeNumber(context, static_cast<double>(value)); \
 266     }
 267
 268 CYCastJSValue_(int)
 269 CYCastJSValue_(unsigned int)
 270 CYCastJSValue_(long int)
 271 CYCastJSValue_(long unsigned int)
 272 CYCastJSValue_(long long int)
 273 CYCastJSValue_(long long unsigned int)
 274
 275 JSValueRef CYJSUndefined(JSContextRef context) {
 276     return JSValueMakeUndefined(context);
 277 }
 278
 279 double CYCastDouble(JSContextRef context, JSValueRef value) {
 280     return _jsccall(JSValueToNumber, context, value);
 281 }
 282
 283 bool CYCastBool(JSContextRef context, JSValueRef value) {
 284     return JSValueToBoolean(context, value);
 285 }
 286
 287 JSValueRef CYJSNull(JSContextRef context) {
 288     return JSValueMakeNull(context);
 289 }
 290
 291 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 292     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 293 }
 294
 295 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 296     return CYCastJSValue(context, CYJSString(value));
 297 }
 298
 299 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 300     return _jsccall(JSValueToObject, context, value);
 301 }
 302
 303 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 304     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 305 }
 306
 307 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 308     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 309 }
 310
 311 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 312     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 313 }
 314
 315 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 316     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 317 }
 318
 319 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 320     JSValueRef arguments[1];
 321     arguments[0] = value;
 322     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 323     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 324 }
 325
 326 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 327     if (count == 0)
 328         printf("\n");
 329     else {
 330         CYPool pool;
 331         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 332     }
 333
 334     return CYJSUndefined(context);
 335 } CYCatch(NULL) }
 336
 337 static size_t Nonce_(0);
 338
 339 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 340     CYPool pool;
 341     const char *name(pool.strcat(CYPoolCString(pool, context, arguments[0]), pool.itoa(Nonce_++), NULL));
 342     return CYCastJSValue(context, name);
 343 } CYCatch(NULL) }
 344
 345
 346 void CYGarbageCollect(JSContextRef context) {
 347     JSGarbageCollect(context);
 348 }
 349
 350 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 351     CYGarbageCollect(context);
 352     return CYJSUndefined(context);
 353 } CYCatch(NULL) }
 354
 355 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, JSValueRef *exception) { CYTry {
 356     switch (JSType type = JSValueGetType(context, value)) {
 357         case kJSTypeUndefined:
 358             return "undefined";
 359         case kJSTypeNull:
 360             return "null";
 361         case kJSTypeBoolean:
 362             return CYCastBool(context, value) ? "true" : "false";
 363
 364         case kJSTypeNumber: {
 365             std::ostringstream str;
 366             CYNumerify(str, CYCastDouble(context, value));
 367             std::string value(str.str());
 368             return pool.strmemdup(value.c_str(), value.size());
 369         } break;
 370
 371         case kJSTypeString: {
 372             std::ostringstream str;
 373             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 374             CYStringify(str, string.data, string.size);
 375             std::string value(str.str());
 376             return pool.strmemdup(value.c_str(), value.size());
 377         } break;
 378
 379         case kJSTypeObject:
 380             return CYPoolCCYON(pool, context, (JSObjectRef) value);
 381         default:
 382             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 383     }
 384 } CYCatch(NULL) }
 385
 386 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value) {
 387     return _jsccall(CYPoolCCYON, pool, context, value);
 388 }
 389
 390 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object) {
 391     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 392     if (CYIsCallable(context, toCYON)) {
 393         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 0, NULL));
 394         _assert(value != NULL);
 395         return CYPoolCString(pool, context, value);
 396     }
 397
 398     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 399     if (CYIsCallable(context, toJSON)) {
 400         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 401         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments));
 402     }
 403
 404     if (JSObjectIsFunction(context, object)) {
 405         JSValueRef toString(CYGetProperty(context, object, toString_s));
 406         if (CYIsCallable(context, toString)) {
 407             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 408             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 409             _assert(value != NULL);
 410             return CYPoolCString(pool, context, value);
 411         }
 412     }
 413
 414     std::ostringstream str;
 415
 416     str << '{';
 417
 418     // XXX: this is, sadly, going to leak
 419     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 420
 421     bool comma(false);
 422
 423     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 424         if (comma)
 425             str << ',';
 426         else
 427             comma = true;
 428
 429         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 430         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 431
 432         if (CYIsKey(string))
 433             str << string.data;
 434         else
 435             CYStringify(str, string.data, string.size);
 436
 437         str << ':';
 438
 439         try {
 440             JSValueRef value(CYGetProperty(context, object, name));
 441             str << CYPoolCCYON(pool, context, value);
 442         } catch (const CYException &error) {
 443             str << "@error";
 444         }
 445     }
 446
 447     JSPropertyNameArrayRelease(names);
 448
 449     str << '}';
 450
 451     std::string string(str.str());
 452     return pool.strmemdup(string.c_str(), string.size());
 453 }
 454
 455 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 456     CYPool pool;
 457     std::ostringstream str;
 458
 459     str << '[';
 460
 461     JSValueRef length(CYGetProperty(context, _this, length_s));
 462     bool comma(false);
 463
 464     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 465         if (comma)
 466             str << ',';
 467         else
 468             comma = true;
 469
 470         try {
 471             JSValueRef value(CYGetProperty(context, _this, index));
 472             if (!JSValueIsUndefined(context, value))
 473                 str << CYPoolCCYON(pool, context, value);
 474             else {
 475                 str << ',';
 476                 comma = false;
 477             }
 478         } catch (const CYException &error) {
 479             str << "@error";
 480         }
 481     }
 482
 483     str << ']';
 484
 485     std::string value(str.str());
 486     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 487 } CYCatch(NULL) }
 488
 489 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 490     CYPool pool;
 491     std::ostringstream str;
 492
 493     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 494     CYStringify(str, string.data, string.size);
 495
 496     std::string value(str.str());
 497     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 498 } CYCatch(NULL) }
 499
 500 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 501     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 502     return JSObjectMake(context, Pointer_, internal);
 503 }
 504
 505 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 506     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 507 }
 508
 509 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 510     cy::Functor *internal;
 511     if (*cache != NULL)
 512         internal = reinterpret_cast<cy::Functor *>(*cache);
 513     else {
 514         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 515         if (function == NULL)
 516             return NULL;
 517
 518         internal = new cy::Functor(encoding, function);
 519         *cache = internal;
 520     }
 521
 522     ++internal->count_;
 523     return JSObjectMake(context, Functor_, internal);
 524 }
 525
 526 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 527     return CYGetOffset(CYPoolCString(pool, context, value), index);
 528 }
 529
 530 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 531     switch (JSValueGetType(context, value)) {
 532         case kJSTypeNull:
 533             return NULL;
 534         case kJSTypeObject: {
 535             JSObjectRef object((JSObjectRef) value);
 536             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 537                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 538                 return internal->value_;
 539             }
 540             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 541             if (CYIsCallable(context, toPointer)) {
 542                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 543                 _assert(value != NULL);
 544                 return CYCastPointer_(context, value);
 545             }
 546         } default:
 547             double number(CYCastDouble(context, value));
 548             if (std::isnan(number))
 549                 throw CYJSError(context, "cannot convert value to pointer");
 550             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 551     }
 552 }
 553
 554 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 555     switch (type->primitive) {
 556         case sig::boolean_P:
 557             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 558         break;
 559
 560 #define CYPoolFFI_(primitive, native) \
 561         case sig::primitive ## _P: \
 562             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 563         break;
 564
 565         CYPoolFFI_(uchar, unsigned char)
 566         CYPoolFFI_(char, char)
 567         CYPoolFFI_(ushort, unsigned short)
 568         CYPoolFFI_(short, short)
 569         CYPoolFFI_(ulong, unsigned long)
 570         CYPoolFFI_(long, long)
 571         CYPoolFFI_(uint, unsigned int)
 572         CYPoolFFI_(int, int)
 573         CYPoolFFI_(ulonglong, unsigned long long)
 574         CYPoolFFI_(longlong, long long)
 575         CYPoolFFI_(float, float)
 576         CYPoolFFI_(double, double)
 577
 578         case sig::array_P: {
 579             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 580             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 581             for (size_t index(0); index != type->data.data.size; ++index) {
 582                 ffi_type *field(ffi->elements[index]);
 583
 584                 JSValueRef rhs;
 585                 if (aggregate == NULL)
 586                     rhs = value;
 587                 else {
 588                     rhs = CYGetProperty(context, aggregate, index);
 589                     if (JSValueIsUndefined(context, rhs))
 590                         throw CYJSError(context, "unable to extract array value");
 591                 }
 592
 593                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 594                 // XXX: alignment?
 595                 base += field->size;
 596             }
 597         } break;
 598
 599         case sig::pointer_P:
 600             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 601         break;
 602
 603         case sig::string_P:
 604             _assert(pool != NULL);
 605             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 606         break;
 607
 608         case sig::struct_P: {
 609             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 610             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 611             for (size_t index(0); index != type->data.signature.count; ++index) {
 612                 sig::Element *element(&type->data.signature.elements[index]);
 613                 ffi_type *field(ffi->elements[index]);
 614
 615                 JSValueRef rhs;
 616                 if (aggregate == NULL)
 617                     rhs = value;
 618                 else {
 619                     rhs = CYGetProperty(context, aggregate, index);
 620                     if (JSValueIsUndefined(context, rhs)) {
 621                         if (element->name != NULL)
 622                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 623                         else
 624                             goto undefined;
 625                         if (JSValueIsUndefined(context, rhs)) undefined:
 626                             throw CYJSError(context, "unable to extract structure value");
 627                     }
 628                 }
 629
 630                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 631                 // XXX: alignment?
 632                 base += field->size;
 633             }
 634         } break;
 635
 636         case sig::void_P:
 637         break;
 638
 639         default:
 640             if (hooks_ != NULL && hooks_->PoolFFI != NULL)
 641                 if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
 642                     return;
 643
 644             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 645     }
 646 }
 647
 648 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 649     switch (type->primitive) {
 650         case sig::boolean_P:
 651             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 652
 653 #define CYFromFFI_(primitive, native) \
 654         case sig::primitive ## _P: \
 655             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 656
 657         CYFromFFI_(uchar, unsigned char)
 658         CYFromFFI_(char, char)
 659         CYFromFFI_(ushort, unsigned short)
 660         CYFromFFI_(short, short)
 661         CYFromFFI_(ulong, unsigned long)
 662         CYFromFFI_(long, long)
 663         CYFromFFI_(uint, unsigned int)
 664         CYFromFFI_(int, int)
 665         CYFromFFI_(ulonglong, unsigned long long)
 666         CYFromFFI_(longlong, long long)
 667         CYFromFFI_(float, float)
 668         CYFromFFI_(double, double)
 669
 670         case sig::array_P:
 671             if (void *pointer = data)
 672                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 673             else goto null;
 674
 675         case sig::pointer_P:
 676             if (void *pointer = *reinterpret_cast<void **>(data))
 677                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 678             else goto null;
 679
 680         case sig::string_P:
 681             if (char *utf8 = *reinterpret_cast<char **>(data))
 682                 return CYCastJSValue(context, utf8);
 683             else goto null;
 684
 685         case sig::struct_P:
 686             return CYMakeStruct(context, data, type, ffi, owner);
 687         case sig::void_P:
 688             return CYJSUndefined(context);
 689
 690         null:
 691             return CYJSNull(context);
 692         default:
 693             if (hooks_ != NULL && hooks_->FromFFI != NULL)
 694                 if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
 695                     return value;
 696
 697             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 698     }
 699 }
 700
 701 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 702     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 703
 704     JSContextRef context(internal->context_);
 705
 706     size_t count(internal->cif_.nargs);
 707     JSValueRef values[count];
 708
 709     for (size_t index(0); index != count; ++index)
 710         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 711
 712     JSValueRef value(adapter(context, count, values, internal->function_));
 713     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 714 }
 715
 716 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 717     return CYCallAsFunction(context, function, NULL, count, values);
 718 }
 719
 720 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 721     CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
 722 }
 723
 724 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
 725     // XXX: in case of exceptions this will leak
 726     // XXX: in point of fact, this may /need/ to leak :(
 727     Closure_privateData *internal(new Closure_privateData(context, function, signature));
 728
 729 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 730     void *executable;
 731     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 732
 733     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
 734     _assert(status == FFI_OK);
 735
 736     internal->value_ = executable;
 737 #else
 738     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 739         NULL, sizeof(ffi_closure),
 740         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 741         -1, 0
 742     )));
 743
 744     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 745     _assert(status == FFI_OK);
 746
 747     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 748
 749     internal->value_ = closure;
 750 #endif
 751
 752     return internal;
 753 }
 754
 755 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 756     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
 757     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 758     // XXX: see above notes about needing to leak
 759     JSValueProtect(CYGetJSContext(context), object);
 760     return object;
 761 }
 762
 763 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 764     return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
 765 }
 766
 767 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 768     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 769
 770     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 771     if (function) {
 772         JSObjectRef function(CYCastJSObject(context, value));
 773         return CYMakeFunctor(context, function, signature);
 774     } else {
 775         void (*function)()(CYCastPointer<void (*)()>(context, value));
 776         return CYMakeFunctor(context, function, signature);
 777     }
 778 }
 779
 780 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 781     Type_privateData *typical(internal->type_);
 782     sig::Type *type(typical->type_);
 783     if (type == NULL)
 784         return false;
 785
 786     const char *name(CYPoolCString(pool, context, property));
 787     size_t length(strlen(name));
 788     double number(CYCastDouble(name, length));
 789
 790     size_t count(type->data.signature.count);
 791
 792     if (std::isnan(number)) {
 793         if (property == NULL)
 794             return false;
 795
 796         sig::Element *elements(type->data.signature.elements);
 797
 798         for (size_t local(0); local != count; ++local) {
 799             sig::Element *element(&elements[local]);
 800             if (element->name != NULL && strcmp(name, element->name) == 0) {
 801                 index = local;
 802                 goto base;
 803             }
 804         }
 805
 806         return false;
 807     } else {
 808         index = static_cast<ssize_t>(number);
 809         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 810             return false;
 811     }
 812
 813   base:
 814     ffi_type **elements(typical->GetFFI()->elements);
 815
 816     base = reinterpret_cast<uint8_t *>(internal->value_);
 817     for (ssize_t local(0); local != index; ++local)
 818         base += elements[local]->size;
 819
 820     return true;
 821 }
 822
 823 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 824     CYPool pool;
 825     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 826
 827     if (JSStringIsEqual(property, length_s))
 828         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 829
 830     Type_privateData *typical(internal->type_);
 831     if (typical->type_ == NULL)
 832         return NULL;
 833     sig::Type &type(*typical->type_);
 834
 835     ssize_t offset;
 836     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 837         offset = 0;
 838     else if (!CYGetOffset(pool, context, property, offset))
 839         return NULL;
 840
 841     if (type.primitive == sig::function_P)
 842         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 843
 844     ffi_type *ffi(typical->GetFFI());
 845
 846     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 847     base += ffi->size * offset;
 848
 849     JSObjectRef owner(internal->GetOwner() ?: object);
 850     return CYFromFFI(context, &type, ffi, base, false, owner);
 851 } CYCatch(NULL) }
 852
 853 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 854     CYPool pool;
 855     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 856     Type_privateData *typical(internal->type_);
 857
 858     if (typical->type_ == NULL)
 859         return false;
 860
 861     ssize_t offset;
 862     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 863         offset = 0;
 864     else if (!CYGetOffset(pool, context, property, offset))
 865         return false;
 866
 867     ffi_type *ffi(typical->GetFFI());
 868
 869     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 870     base += ffi->size * offset;
 871
 872     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 873     return true;
 874 } CYCatch(false) }
 875
 876 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 877     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 878     Type_privateData *typical(internal->type_);
 879     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 880 } CYCatch(NULL) }
 881
 882 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 883     CYPool pool;
 884     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 885     Type_privateData *typical(internal->type_);
 886
 887     ssize_t index;
 888     uint8_t *base;
 889
 890     if (!Index_(pool, context, internal, property, index, base))
 891         return NULL;
 892
 893     JSObjectRef owner(internal->GetOwner() ?: object);
 894
 895     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 896 } CYCatch(NULL) }
 897
 898 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 899     CYPool pool;
 900     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 901     Type_privateData *typical(internal->type_);
 902
 903     ssize_t index;
 904     uint8_t *base;
 905
 906     if (!Index_(pool, context, internal, property, index, base))
 907         return false;
 908
 909     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 910     return true;
 911 } CYCatch(false) }
 912
 913 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 914     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 915     Type_privateData *typical(internal->type_);
 916     sig::Type *type(typical->type_);
 917
 918     if (type == NULL)
 919         return;
 920
 921     size_t count(type->data.signature.count);
 922     sig::Element *elements(type->data.signature.elements);
 923
 924     char number[32];
 925
 926     for (size_t index(0); index != count; ++index) {
 927         const char *name;
 928         name = elements[index].name;
 929
 930         if (name == NULL) {
 931             sprintf(number, "%zu", index);
 932             name = number;
 933         }
 934
 935         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 936     }
 937 }
 938
 939 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)()) {
 940     if (setups + count != signature->count - 1)
 941         throw CYJSError(context, "incorrect number of arguments to ffi function");
 942
 943     size_t size(setups + count);
 944     void *values[size];
 945     memcpy(values, setup, sizeof(void *) * setups);
 946
 947     for (size_t index(setups); index != size; ++index) {
 948         sig::Element *element(&signature->elements[index + 1]);
 949         ffi_type *ffi(cif->arg_types[index]);
 950         // XXX: alignment?
 951         values[index] = new(pool) uint8_t[ffi->size];
 952         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
 953     }
 954
 955     uint8_t value[cif->rtype->size];
 956
 957     if (hooks_ != NULL && hooks_->CallFunction != NULL)
 958         (*hooks_->CallFunction)(context, cif, function, value, values);
 959     else
 960         ffi_call(cif, function, value, values);
 961
 962     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
 963 }
 964
 965 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 966     CYPool pool;
 967     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
 968     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
 969 } CYCatch(NULL) }
 970
 971 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
 972     Type_privateData *internal(new Type_privateData(encoding));
 973     return JSObjectMake(context, Type_privateData::Class_, internal);
 974 }
 975
 976 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
 977     Type_privateData *internal(new Type_privateData(type));
 978     return JSObjectMake(context, Type_privateData::Class_, internal);
 979 }
 980
 981 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
 982     CYPool pool;
 983
 984     sig::Type type;
 985     type.name = NULL;
 986     type.flags = 0;
 987
 988     type.primitive = sig::function_P;
 989     sig::Copy(pool, type.data.signature, *signature);
 990
 991     return CYMakeType(context, &type);
 992 }
 993
 994 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 995     JSObjectRef global(CYGetGlobalObject(context));
 996     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
 997     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
 998
 999     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1000         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1001             if (JSValueRef value = CYGetProperty(context, space, property))
1002                 if (!JSValueIsUndefined(context, value))
1003                     return value;
1004
1005     CYPool pool;
1006     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1007
1008     size_t length(name.size);
1009     char keyed[length + 2];
1010     memcpy(keyed + 1, name.data, length + 1);
1011
1012     static const char *modes = "0124";
1013     for (size_t i(0); i != 4; ++i) {
1014         char mode(modes[i]);
1015         keyed[0] = mode;
1016
1017         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1018             switch (mode) {
1019                 case '0':
1020                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1021
1022                 case '1':
1023                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1024
1025                 case '2':
1026                     if (void *symbol = CYCastSymbol(name.data)) {
1027                         // XXX: this is horrendously inefficient
1028                         sig::Signature signature;
1029                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1030                         ffi_cif cif;
1031                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1032                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1033                     } else return NULL;
1034
1035                 // XXX: implement case 3
1036                 case '4':
1037                     return CYMakeType(context, entry->value_);
1038             }
1039     }
1040
1041     return NULL;
1042 } CYCatch(NULL) }
1043
1044 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1045     JSObjectRef global(CYGetGlobalObject(context));
1046     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1047     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1048
1049     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1050         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1051             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1052             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1053                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1054             JSPropertyNameArrayRelease(subset);
1055         }
1056 }
1057
1058 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1059     if (count != 2)
1060         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1061
1062     CYPool pool;
1063
1064     void *value(CYCastPointer<void *>(context, arguments[0]));
1065     const char *type(CYPoolCString(pool, context, arguments[1]));
1066
1067     sig::Signature signature;
1068     sig::Parse(pool, &signature, type, &Structor_);
1069
1070     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1071 } CYCatch(NULL) }
1072
1073 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1074     if (count != 1)
1075         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1076     CYPool pool;
1077     const char *type(CYPoolCString(pool, context, arguments[0]));
1078     return CYMakeType(context, type);
1079 } CYCatch(NULL) }
1080
1081 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1082     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1083
1084     CYPool pool;
1085
1086     sig::Type type;
1087     type.name = NULL;
1088     type.flags = 0;
1089
1090     type.primitive = primitive;
1091     type.data.signature.elements = new(pool) sig::Element[1 + count];
1092     type.data.signature.count = 1 + count;
1093
1094     type.data.signature.elements[0].name = NULL;
1095     type.data.signature.elements[0].type = internal->type_;
1096     type.data.signature.elements[0].offset = _not(size_t);
1097
1098     for (size_t i(0); i != count; ++i) {
1099         sig::Element &element(type.data.signature.elements[i + 1]);
1100         element.name = NULL;
1101         element.offset = _not(size_t);
1102
1103         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1104         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1105         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1106
1107         element.type = internal->type_;
1108     }
1109
1110     return CYMakeType(context, &type);
1111 } CYCatch(NULL) }
1112
1113 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1114     if (count != 1)
1115         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1116     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1117
1118     CYPool pool;
1119     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1120     if (index == _not(size_t))
1121         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1122
1123     sig::Type type;
1124     type.name = NULL;
1125     type.flags = 0;
1126
1127     type.primitive = sig::array_P;
1128     type.data.data.type = internal->type_;
1129     type.data.data.size = index;
1130
1131     return CYMakeType(context, &type);
1132 } CYCatch(NULL) }
1133
1134 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1135     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1136 }
1137
1138 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1139     if (count != 0)
1140         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1141     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1142
1143     sig::Type type(*internal->type_);
1144     type.flags |= JOC_TYPE_CONST;
1145     return CYMakeType(context, &type);
1146 } CYCatch(NULL) }
1147
1148 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1149     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1150 }
1151
1152 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1153     if (count != 0)
1154         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1155     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1156
1157     sig::Type type;
1158     type.name = NULL;
1159
1160     if (internal->type_->primitive == sig::char_P) {
1161         type.flags = internal->type_->flags;
1162         type.primitive = sig::string_P;
1163         type.data.data.type = NULL;
1164         type.data.data.size = 0;
1165     } else {
1166         type.flags = 0;
1167         type.primitive = sig::pointer_P;
1168         type.data.data.type = internal->type_;
1169         type.data.data.size = 0;
1170     }
1171
1172     return CYMakeType(context, &type);
1173 } CYCatch(NULL) }
1174
1175 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1176     if (count != 1)
1177         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1178     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1179
1180     CYPool pool;
1181     const char *name(CYPoolCString(pool, context, arguments[0]));
1182
1183     sig::Type type(*internal->type_);
1184     type.name = name;
1185     return CYMakeType(context, &type);
1186 } CYCatch(NULL) }
1187
1188 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1189     if (count != 1)
1190         throw CYJSError(context, "incorrect number of arguments to type cast function");
1191     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1192
1193     if (internal->type_->primitive == sig::function_P)
1194         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1195
1196     sig::Type *type(internal->type_);
1197     ffi_type *ffi(internal->GetFFI());
1198     // XXX: alignment?
1199     uint8_t value[ffi->size];
1200     CYPool pool;
1201     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1202     return CYFromFFI(context, type, ffi, value);
1203 } CYCatch(NULL) }
1204
1205 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1206     if (count != 0)
1207         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1208     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1209
1210     sig::Type *type(internal->type_);
1211     size_t length;
1212
1213     if (type->primitive != sig::array_P)
1214         length = _not(size_t);
1215     else {
1216         length = type->data.data.size;
1217         type = type->data.data.type;
1218     }
1219
1220     void *value(calloc(1, internal->GetFFI()->size));
1221     return CYMakePointer(context, value, length, type, NULL, NULL);
1222 } CYCatch(NULL) }
1223
1224 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1225     if (count != 2)
1226         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1227     CYPool pool;
1228     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1229     sig::Signature signature;
1230     sig::Parse(pool, &signature, encoding, &Structor_);
1231     return CYMakeFunctor(context, arguments[0], signature);
1232 } CYCatch(NULL) }
1233
1234 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1235     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1236     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1237 } CYCatch(NULL) }
1238
1239 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1240     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1241 }
1242
1243 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1244     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1245     char string[32];
1246     sprintf(string, "%p", internal->value_);
1247     return CYCastJSValue(context, string);
1248 } CYCatch(NULL) }
1249
1250 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1251     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1252     if (internal->length_ != _not(size_t)) {
1253         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1254         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1255         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1256     } else if (internal->type_->type_ == NULL) pointer: {
1257         char string[32];
1258         sprintf(string, "%p", internal->value_);
1259         return CYCastJSValue(context, string);
1260     } try {
1261         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1262         if (JSValueIsUndefined(context, value))
1263             goto pointer;
1264         CYPool pool;
1265         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value), NULL));
1266     } catch (const CYException &e) {
1267         goto pointer;
1268     }
1269 } CYCatch(NULL) }
1270
1271 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1272     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1273     return CYMakeType(context, internal->type_->type_);
1274 } CYCatch(NULL) }
1275
1276 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1277     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1278     return CYMakeType(context, &internal->signature_);
1279 } CYCatch(NULL) }
1280
1281 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1282     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1283     return CYCastJSValue(context, internal->GetFFI()->alignment);
1284 } CYCatch(NULL) }
1285
1286 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1287     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1288     return CYCastJSValue(context, internal->type_->name);
1289 } CYCatch(NULL) }
1290
1291 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1292     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1293     return CYCastJSValue(context, internal->GetFFI()->size);
1294 } CYCatch(NULL) }
1295
1296 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1297     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1298     CYPool pool;
1299     const char *type(sig::Unparse(pool, internal->type_));
1300     return CYCastJSValue(context, CYJSString(type));
1301 } CYCatch(NULL) }
1302
1303 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1304     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1305     CYLocalPool pool;
1306     std::ostringstream out;
1307     CYOptions options;
1308     CYOutput output(out, options);
1309     (new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1310     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1311 } CYCatch(NULL) }
1312
1313 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1314     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1315 }
1316
1317 static JSStaticFunction Pointer_staticFunctions[4] = {
1318     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1319     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1320     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1321     {NULL, NULL, 0}
1322 };
1323
1324 static JSStaticValue Pointer_staticValues[2] = {
1325     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1326     {NULL, NULL, NULL, 0}
1327 };
1328
1329 static JSStaticFunction Struct_staticFunctions[2] = {
1330     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1331     {NULL, NULL, 0}
1332 };
1333
1334 static JSStaticFunction Functor_staticFunctions[4] = {
1335     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1336     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1337     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1338     {NULL, NULL, 0}
1339 };
1340
1341 namespace cy {
1342     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1343 }
1344
1345 static JSStaticValue Functor_staticValues[2] = {
1346     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1347     {NULL, NULL, NULL, 0}
1348 };
1349
1350 static JSStaticValue Type_staticValues[4] = {
1351     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1352     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1353     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1354     {NULL, NULL, NULL, 0}
1355 };
1356
1357 static JSStaticFunction Type_staticFunctions[10] = {
1358     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1359     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1360     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1361     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1362     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1363     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1364     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1365     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1366     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1367     {NULL, NULL, 0}
1368 };
1369
1370 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1371
1372 void CYSetArgs(int argc, const char *argv[]) {
1373     JSContextRef context(CYGetJSContext());
1374     JSValueRef args[argc];
1375     for (int i(0); i != argc; ++i)
1376         args[i] = CYCastJSValue(context, argv[i]);
1377
1378     JSObjectRef array;
1379     if (JSObjectMakeArray$ != NULL)
1380         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1381     else {
1382         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1383         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1384         array = CYCastJSObject(context, value);
1385     }
1386
1387     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1388     CYSetProperty(context, System, CYJSString("args"), array);
1389 }
1390
1391 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1392     return JSContextGetGlobalObject(context);
1393 }
1394
1395 const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1396     JSValueRef exception(NULL);
1397
1398     void *handle;
1399     if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
1400         handle = (*hooks_->ExecuteStart)(context);
1401     else
1402         handle = NULL;
1403
1404     try {
1405
1406     JSValueRef result;
1407     try {
1408         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1409     } catch (const char *error) {
1410         return error;
1411     }
1412
1413     if (exception != NULL) error:
1414         return CYPoolCString(pool, context, CYJSString(context, exception));
1415
1416     if (JSValueIsUndefined(context, result))
1417         return NULL;
1418
1419     const char *json;
1420     try {
1421         json = CYPoolCCYON(pool, context, result, &exception);
1422     } catch (const char *error) {
1423         return error;
1424     }
1425
1426     if (exception != NULL)
1427         goto error;
1428
1429     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1430
1431     return json;
1432
1433     } catch (...) {
1434         if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
1435             (*hooks_->ExecuteEnd)(context, handle);
1436         throw;
1437     }
1438 }
1439
1440 static bool initialized_ = false;
1441
1442 void CYInitializeDynamic() {
1443     if (!initialized_)
1444         initialized_ = true;
1445     else return;
1446
1447     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1448
1449     JSClassDefinition definition;
1450
1451     definition = kJSClassDefinitionEmpty;
1452     definition.className = "All";
1453     definition.getProperty = &All_getProperty;
1454     definition.getPropertyNames = &All_getPropertyNames;
1455     All_ = JSClassCreate(&definition);
1456
1457     definition = kJSClassDefinitionEmpty;
1458     definition.className = "Context";
1459     definition.finalize = &CYFinalize;
1460     Context_ = JSClassCreate(&definition);
1461
1462     definition = kJSClassDefinitionEmpty;
1463     definition.className = "Functor";
1464     definition.staticFunctions = cy::Functor::StaticFunctions;
1465     definition.staticValues = Functor_staticValues;
1466     definition.callAsFunction = &Functor_callAsFunction;
1467     definition.finalize = &CYFinalize;
1468     Functor_ = JSClassCreate(&definition);
1469
1470     definition = kJSClassDefinitionEmpty;
1471     definition.className = "Pointer";
1472     definition.staticFunctions = Pointer_staticFunctions;
1473     definition.staticValues = Pointer_staticValues;
1474     definition.getProperty = &Pointer_getProperty;
1475     definition.setProperty = &Pointer_setProperty;
1476     definition.finalize = &CYFinalize;
1477     Pointer_ = JSClassCreate(&definition);
1478
1479     definition = kJSClassDefinitionEmpty;
1480     definition.className = "Struct";
1481     definition.staticFunctions = Struct_staticFunctions;
1482     definition.getProperty = &Struct_getProperty;
1483     definition.setProperty = &Struct_setProperty;
1484     definition.getPropertyNames = &Struct_getPropertyNames;
1485     definition.finalize = &CYFinalize;
1486     Struct_ = JSClassCreate(&definition);
1487
1488     definition = kJSClassDefinitionEmpty;
1489     definition.className = "Type";
1490     definition.staticValues = Type_staticValues;
1491     definition.staticFunctions = Type_staticFunctions;
1492     definition.callAsFunction = &Type_callAsFunction;
1493     definition.callAsConstructor = &Type_callAsConstructor;
1494     definition.finalize = &CYFinalize;
1495     Type_privateData::Class_ = JSClassCreate(&definition);
1496
1497     definition = kJSClassDefinitionEmpty;
1498     definition.className = "Global";
1499     //definition.getProperty = &Global_getProperty;
1500     Global_ = JSClassCreate(&definition);
1501
1502     Array_s = JSStringCreateWithUTF8CString("Array");
1503     cy_s = JSStringCreateWithUTF8CString("$cy");
1504     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1505     length_s = JSStringCreateWithUTF8CString("length");
1506     message_s = JSStringCreateWithUTF8CString("message");
1507     name_s = JSStringCreateWithUTF8CString("name");
1508     pop_s = JSStringCreateWithUTF8CString("pop");
1509     prototype_s = JSStringCreateWithUTF8CString("prototype");
1510     push_s = JSStringCreateWithUTF8CString("push");
1511     splice_s = JSStringCreateWithUTF8CString("splice");
1512     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1513     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1514     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1515     toString_s = JSStringCreateWithUTF8CString("toString");
1516
1517     Result_ = JSStringCreateWithUTF8CString("_");
1518
1519     if (hooks_ != NULL && hooks_->Initialize != NULL)
1520         (*hooks_->Initialize)();
1521 }
1522
1523 void CYThrow(JSContextRef context, JSValueRef value) {
1524     if (value != NULL)
1525         throw CYJSError(context, value);
1526 }
1527
1528 const char *CYJSError::PoolCString(CYPool &pool) const {
1529     // XXX: this used to be CYPoolCString
1530     return CYPoolCCYON(pool, context_, value_);
1531 }
1532
1533 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1534     // XXX: what if the context is different?
1535     return value_;
1536 }
1537
1538 JSValueRef CYCastJSError(JSContextRef context, const char *message) {
1539     JSObjectRef Error(CYGetCachedObject(context, CYJSString("Error")));
1540     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1541     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1542 }
1543
1544 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1545     return CYCastJSError(context, message_);
1546 }
1547
1548 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1549     _assert(context != NULL);
1550
1551     CYPool pool;
1552
1553     va_list args;
1554     va_start(args, format);
1555     // XXX: there might be a beter way to think about this
1556     const char *message(pool.vsprintf(64, format, args));
1557     va_end(args);
1558
1559     value_ = CYCastJSError(context, message);
1560 }
1561
1562 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1563     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1564 }
1565
1566 extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
1567
1568 void *CYMapFile(const char *path, size_t *psize) {
1569     int fd;
1570     _syscall(fd = open(path, O_RDONLY));
1571
1572     struct stat stat;
1573     _syscall(fstat(fd, &stat));
1574     size_t size(stat.st_size);
1575
1576     *psize = size;
1577
1578     void *base;
1579     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1580
1581     _syscall(close(fd));
1582     return base;
1583 }
1584
1585 static void CYRunSetups(JSContextRef context) {
1586     std::string folder("/etc/cycript/setup.d");
1587     DIR *setups(opendir(folder.c_str()));
1588     if (setups == NULL)
1589         return;
1590
1591     for (;;) {
1592         dirent setup;
1593         dirent *result;
1594         _syscall(readdir_r(setups, &setup, &result));
1595
1596         if (result == NULL)
1597             break;
1598         _assert(result == &setup);
1599
1600         const char *name(setup.d_name);
1601         size_t length(strlen(name));
1602         if (length < 4)
1603             continue;
1604
1605         if (name[0] == '.')
1606             continue;
1607         if (memcmp(name + length - 3, ".cy", 3) != 0)
1608             continue;
1609
1610         std::string script(folder + "/" + name);
1611         CYUTF8String utf8;
1612         utf8.data = reinterpret_cast<char *>(CYMapFile(script.c_str(), &utf8.size));
1613
1614         CYPool pool;
1615         CYUTF16String utf16(CYPoolUTF16String(pool, utf8));
1616         munmap(const_cast<char *>(utf8.data), utf8.size);
1617
1618         // XXX: this should not be used
1619         CydgetMemoryParse(&utf16.data, &utf16.size);
1620
1621         CYExecute(context, pool, CYPoolUTF8String(pool, utf16));
1622         free(const_cast<uint16_t *>(utf16.data));
1623     }
1624
1625     _syscall(closedir(setups));
1626 }
1627
1628 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1629     _assert(count == 1);
1630     CYPool pool;
1631
1632     Dl_info addr;
1633     _assert(dladdr(reinterpret_cast<void *>(&require), &addr) != 0);
1634     char *lib(pool.strdup(addr.dli_fname));
1635
1636     char *slash(strrchr(lib, '/'));
1637     _assert(slash != NULL);
1638     *slash = '\0';
1639
1640     CYJSString property("exports");
1641     JSObjectRef module;
1642
1643     const char *path(pool.strcat(lib, "/cycript/", CYPoolCString(pool, context, arguments[0]), ".cy", NULL));
1644     CYJSString key(path);
1645     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1646     JSValueRef cache(CYGetProperty(context, modules, key));
1647
1648     if (!JSValueIsUndefined(context, cache))
1649         module = CYCastJSObject(context, cache);
1650     else {
1651         CYUTF8String code;
1652         code.data = reinterpret_cast<char *>(CYMapFile(path, &code.size));
1653
1654         std::stringstream wrap;
1655         wrap << "(function (exports, require, module) { " << code << "\n});";
1656         code = CYPoolCode(pool, wrap.str().c_str());
1657
1658         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1659         JSObjectRef function(CYCastJSObject(context, value));
1660
1661         module = JSObjectMake(context, NULL, NULL);
1662         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1663         CYSetProperty(context, module, property, exports);
1664
1665         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1666         CYCallAsFunction(context, function, NULL, 3, arguments);
1667         CYSetProperty(context, modules, key, module);
1668     }
1669
1670     return CYGetProperty(context, module, property);
1671 } CYCatch(NULL) }
1672
1673 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1674     CYInitializeDynamic();
1675
1676     JSObjectRef global(CYGetGlobalObject(context));
1677
1678     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1679     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1680
1681 /* Cache Globals {{{ */
1682     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1683     CYSetProperty(context, cy, CYJSString("Array"), Array);
1684
1685     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1686     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1687
1688     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1689     CYSetProperty(context, cy, CYJSString("Error"), Error);
1690
1691     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1692     CYSetProperty(context, cy, CYJSString("Function"), Function);
1693
1694     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1695     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1696
1697     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1698     CYSetProperty(context, cy, CYJSString("Object"), Object);
1699
1700     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1701     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1702
1703     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1704     CYSetProperty(context, cy, CYJSString("String"), String);
1705
1706     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1707     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1708 /* }}} */
1709
1710     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1711     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1712
1713     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1714     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1715     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1716
1717     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1718     JSObjectSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1719     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1720
1721     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1722     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1723
1724     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1725     CYSetProperty(context, cy, CYJSString("modules"), modules);
1726
1727     JSObjectRef all(JSObjectMake(context, All_, NULL));
1728     CYSetProperty(context, cycript, CYJSString("all"), all);
1729
1730     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1731     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1732
1733     if (true) {
1734         JSObjectRef last(NULL), curr(global);
1735
1736         goto next; for (JSValueRef next;;) {
1737             if (JSValueIsNull(context, next))
1738                 break;
1739             last = curr;
1740             curr = CYCastJSObject(context, next);
1741           next:
1742             next = JSObjectGetPrototype(context, curr);
1743         }
1744
1745         JSObjectSetPrototype(context, last, all);
1746     }
1747
1748     CYSetProperty(context, global, CYJSString("$cyq"), &$cyq, kJSPropertyAttributeDontEnum);
1749
1750     JSObjectRef System(JSObjectMake(context, NULL, NULL));
1751     CYSetProperty(context, cy, CYJSString("System"), System);
1752
1753     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
1754
1755     CYSetProperty(context, global, CYJSString("system"), System);
1756     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
1757     //CYSetProperty(context, System, CYJSString("global"), global);
1758     CYSetProperty(context, System, CYJSString("print"), &System_print);
1759
1760     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
1761         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
1762
1763     if (hooks_ != NULL && hooks_->SetupContext != NULL)
1764         (*hooks_->SetupContext)(context);
1765
1766     CYArrayPush(context, alls, cycript);
1767
1768     CYRunSetups(context);
1769 }
1770
1771 static JSGlobalContextRef context_;
1772
1773 JSGlobalContextRef CYGetJSContext() {
1774     CYInitializeDynamic();
1775
1776     if (context_ == NULL) {
1777         context_ = JSGlobalContextCreate(Global_);
1778         CYSetupContext(context_);
1779     }
1780
1781     return context_;
1782 }
1783
1784 void CYDestroyContext() {
1785     if (context_ == NULL)
1786         return;
1787     JSGlobalContextRelease(context_);
1788     context_ = NULL;
1789 }