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