Execute.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #include <iostream>
  25 #include <set>
  26 #include <map>
  27 #include <iomanip>
  28 #include <sstream>
  29 #include <cmath>
  30
  31 #include <dlfcn.h>
  32 #include <dirent.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35
  36 #include <sys/mman.h>
  37 #include <sys/stat.h>
  38
  39 #include "sig/parse.hpp"
  40 #include "sig/ffi_type.hpp"
  41
  42 #include "Code.hpp"
  43 #include "Decode.hpp"
  44 #include "Error.hpp"
  45 #include "Execute.hpp"
  46 #include "Internal.hpp"
  47 #include "JavaScript.hpp"
  48 #include "Pooling.hpp"
  49 #include "String.hpp"
  50
  51 static std::vector<CYHook *> &GetHooks() {
  52     static std::vector<CYHook *> hooks;
  53     return hooks;
  54 }
  55
  56 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  57     GetHooks().push_back(hook);
  58 }
  59
  60 /* JavaScript Properties {{{ */
  61 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  62     return JSObjectHasProperty(context, object, name);
  63 }
  64
  65 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  66     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  67 }
  68
  69 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  70     return _jsccall(JSObjectGetProperty, context, object, name);
  71 }
  72
  73 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  74     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  75 }
  76
  77 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  78     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  79 }
  80
  81 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  82     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  83 }
  84
  85 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  86     JSObjectSetPrototype(context, object, value);
  87     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
  88 }
  89 /* }}} */
  90 /* JavaScript Strings {{{ */
  91 JSStringRef CYCopyJSString(const char *value) {
  92     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  93 }
  94
  95 JSStringRef CYCopyJSString(JSStringRef value) {
  96     return value == NULL ? NULL : JSStringRetain(value);
  97 }
  98
  99 JSStringRef CYCopyJSString(CYUTF8String value) {
 100     if (memchr(value.data, '\0', value.size) != NULL) {
 101         CYPool pool;
 102         return CYCopyJSString(pool.memdup(value.data, value.size));
 103     } else if (value.data[value.size] != '\0') {
 104         CYPool pool;
 105         return CYCopyJSString(CYPoolUTF16String(pool, value));
 106     } else {
 107         return CYCopyJSString(value.data);
 108     }
 109 }
 110
 111 JSStringRef CYCopyJSString(CYUTF16String value) {
 112     return JSStringCreateWithCharacters(value.data, value.size);
 113 }
 114
 115 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 116     if (JSValueIsNull(context, value))
 117         return NULL;
 118     return _jsccall(JSValueToStringCopy, context, value);
 119 }
 120
 121 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 122     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 123 }
 124
 125 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 126     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 127 }
 128
 129 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 130     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 131     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 132     return utf8.data;
 133 }
 134
 135 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 136     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 137 }
 138 /* }}} */
 139 /* Index Offsets {{{ */
 140 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 141     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 142 }
 143 /* }}} */
 144
 145 static JSClassRef All_;
 146 static JSClassRef Context_;
 147 static JSClassRef CString_;
 148 JSClassRef Functor_;
 149 static JSClassRef Global_;
 150 static JSClassRef Pointer_;
 151 static JSClassRef Struct_;
 152
 153 JSStringRef Array_s;
 154 JSStringRef cy_s;
 155 JSStringRef cyi_s;
 156 JSStringRef length_s;
 157 JSStringRef message_s;
 158 JSStringRef name_s;
 159 JSStringRef pop_s;
 160 JSStringRef prototype_s;
 161 JSStringRef push_s;
 162 JSStringRef splice_s;
 163 JSStringRef toCYON_s;
 164 JSStringRef toJSON_s;
 165 JSStringRef toPointer_s;
 166 JSStringRef toString_s;
 167 JSStringRef weak_s;
 168
 169 static JSStringRef Result_;
 170
 171 void CYFinalize(JSObjectRef object) {
 172     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 173     _assert(internal->count_ != _not(unsigned));
 174     if (--internal->count_ == 0)
 175         delete internal;
 176 }
 177
 178 void Structor_(CYPool &pool, sig::Type *&type) {
 179     if (
 180         type->primitive == sig::pointer_P &&
 181         type->data.data.type->primitive == sig::struct_P &&
 182         type->data.data.type->name != NULL &&
 183         strcmp(type->data.data.type->name, "_objc_class") == 0
 184     ) {
 185         type->primitive = sig::typename_P;
 186         type->data.data.type = NULL;
 187         return;
 188     }
 189
 190     if (type->primitive != sig::struct_P || type->name == NULL)
 191         return;
 192
 193     size_t length(strlen(type->name));
 194     char keyed[length + 2];
 195     memcpy(keyed + 1, type->name, length + 1);
 196
 197     static const char *modes = "34";
 198     for (size_t i(0); i != 2; ++i) {
 199         char mode(modes[i]);
 200         keyed[0] = mode;
 201
 202         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 203             switch (mode) {
 204                 case '3':
 205                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 206                 break;
 207
 208                 case '4': {
 209                     sig::Signature signature;
 210                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 211                     type = signature.elements[0].type;
 212                 } break;
 213             }
 214     }
 215 }
 216
 217 JSClassRef Type_privateData::Class_;
 218
 219 struct Context :
 220     CYData
 221 {
 222     JSGlobalContextRef context_;
 223
 224     Context(JSGlobalContextRef context) :
 225         context_(context)
 226     {
 227     }
 228 };
 229
 230 struct CString :
 231     CYOwned
 232 {
 233     CString(char *value, JSContextRef context, JSObjectRef owner) :
 234         CYOwned(value, context, owner)
 235     {
 236     }
 237 };
 238
 239 struct Pointer :
 240     CYOwned
 241 {
 242     Type_privateData *type_;
 243     size_t length_;
 244
 245     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 246         CYOwned(value, context, owner),
 247         type_(new(*pool_) Type_privateData(type)),
 248         length_(length)
 249     {
 250     }
 251 };
 252
 253 struct Struct_privateData :
 254     CYOwned
 255 {
 256     Type_privateData *type_;
 257
 258     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 259         CYOwned(NULL, context, owner)
 260     {
 261     }
 262 };
 263
 264 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 265     Struct_privateData *internal(new Struct_privateData(context, owner));
 266     CYPool &pool(*internal->pool_);
 267     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 268     internal->type_ = typical;
 269
 270     if (owner != NULL)
 271         internal->value_ = data;
 272     else {
 273         size_t size(typical->GetFFI()->size);
 274         void *copy(internal->pool_->malloc<void>(size));
 275         memcpy(copy, data, size);
 276         internal->value_ = copy;
 277     }
 278
 279     return JSObjectMake(context, Struct_, internal);
 280 }
 281
 282 static void *CYCastSymbol(const char *name) {
 283     for (CYHook *hook : GetHooks())
 284         if (hook->CastSymbol != NULL)
 285             if (void *value = (*hook->CastSymbol)(name))
 286                 return value;
 287     return dlsym(RTLD_DEFAULT, name);
 288 }
 289
 290 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 291     return JSValueMakeBoolean(context, value);
 292 }
 293
 294 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 295     return JSValueMakeNumber(context, value);
 296 }
 297
 298 #define CYCastJSValue_(Type_) \
 299     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 300         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 301         return JSValueMakeNumber(context, static_cast<double>(value)); \
 302     }
 303
 304 CYCastJSValue_(int)
 305 CYCastJSValue_(unsigned int)
 306 CYCastJSValue_(long int)
 307 CYCastJSValue_(long unsigned int)
 308 CYCastJSValue_(long long int)
 309 CYCastJSValue_(long long unsigned int)
 310
 311 JSValueRef CYJSUndefined(JSContextRef context) {
 312     return JSValueMakeUndefined(context);
 313 }
 314
 315 double CYCastDouble(JSContextRef context, JSValueRef value) {
 316     return _jsccall(JSValueToNumber, context, value);
 317 }
 318
 319 bool CYCastBool(JSContextRef context, JSValueRef value) {
 320     return JSValueToBoolean(context, value);
 321 }
 322
 323 JSValueRef CYJSNull(JSContextRef context) {
 324     return JSValueMakeNull(context);
 325 }
 326
 327 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 328     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 329 }
 330
 331 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 332     return CYCastJSValue(context, CYJSString(value));
 333 }
 334
 335 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 336     return _jsccall(JSValueToObject, context, value);
 337 }
 338
 339 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 340     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 341 }
 342
 343 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 344     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 345 }
 346
 347 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 348     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 349 }
 350
 351 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 352     return JSValueIsStrictEqual(context, lhs, rhs);
 353 }
 354
 355 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 356     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 357 }
 358
 359 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 360     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 361 }
 362
 363 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 364     JSValueRef arguments[1];
 365     arguments[0] = value;
 366     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 367     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 368 }
 369
 370 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 371     FILE *file(stdout);
 372
 373     if (count == 0)
 374         fputc('\n', file);
 375     else {
 376         CYPool pool;
 377         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 378         fwrite(string.data, string.size, 1, file);
 379     }
 380
 381     fflush(file);
 382     return CYJSUndefined(context);
 383 } CYCatch(NULL) }
 384
 385 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 386
 387 _visible void CYGarbageCollect(JSContextRef context) {
 388     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 389 }
 390
 391 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 392     CYPool pool;
 393     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 394     std::stringbuf value(std::string(before.data, before.size));
 395     CYUTF8String after(CYPoolCode(pool, value));
 396     return CYCastJSValue(context, CYJSString(after));
 397 } CYCatch_(NULL, "SyntaxError") }
 398
 399 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 400     CYGarbageCollect(context);
 401     return CYJSUndefined(context);
 402 } CYCatch(NULL) }
 403
 404 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 405     switch (JSType type = JSValueGetType(context, value)) {
 406         case kJSTypeUndefined:
 407             return "undefined";
 408         case kJSTypeNull:
 409             return "null";
 410         case kJSTypeBoolean:
 411             return CYCastBool(context, value) ? "true" : "false";
 412
 413         case kJSTypeNumber: {
 414             std::ostringstream str;
 415             CYNumerify(str, CYCastDouble(context, value));
 416             std::string value(str.str());
 417             return pool.strmemdup(value.c_str(), value.size());
 418         } break;
 419
 420         case kJSTypeString: {
 421             std::ostringstream str;
 422             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 423             CYStringify(str, string.data, string.size);
 424             std::string value(str.str());
 425             return pool.strmemdup(value.c_str(), value.size());
 426         } break;
 427
 428         case kJSTypeObject:
 429             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 430         default:
 431             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 432     }
 433 } CYCatch(NULL) }
 434
 435 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 436     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 437 }
 438
 439 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 440     if (objects != NULL)
 441         return CYPoolCCYON(pool, context, value, *objects);
 442     else {
 443         std::set<void *> objects;
 444         return CYPoolCCYON(pool, context, value, objects);
 445     }
 446 }
 447
 448 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 449     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 450     if (CYIsCallable(context, toCYON)) {
 451         // XXX: this needs to be abstracted behind some kind of function
 452         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 453         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 454         _assert(value != NULL);
 455         return CYPoolCString(pool, context, value);
 456     }
 457
 458     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 459     if (CYIsCallable(context, toJSON)) {
 460         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 461         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 462     }
 463
 464     if (JSObjectIsFunction(context, object)) {
 465         JSValueRef toString(CYGetProperty(context, object, toString_s));
 466         if (CYIsCallable(context, toString)) {
 467             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 468             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 469             _assert(value != NULL);
 470             return CYPoolCString(pool, context, value);
 471         }
 472     }
 473
 474     _assert(objects.insert(object).second);
 475
 476     std::ostringstream str;
 477
 478     str << '{';
 479
 480     // XXX: this is, sadly, going to leak
 481     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 482
 483     bool comma(false);
 484
 485     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 486         if (comma)
 487             str << ',';
 488         else
 489             comma = true;
 490
 491         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 492         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 493
 494         if (CYIsKey(string))
 495             str << string.data;
 496         else
 497             CYStringify(str, string.data, string.size);
 498
 499         str << ':';
 500
 501         try {
 502             JSValueRef value(CYGetProperty(context, object, name));
 503             str << CYPoolCCYON(pool, context, value, objects);
 504         } catch (const CYException &error) {
 505             str << "@error";
 506         }
 507     }
 508
 509     JSPropertyNameArrayRelease(names);
 510
 511     str << '}';
 512
 513     std::string string(str.str());
 514     return pool.strmemdup(string.c_str(), string.size());
 515 }
 516
 517 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 518     if (count == 0)
 519         return NULL;
 520     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 521 }
 522
 523 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 524     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 525     // XXX: this is horribly inefficient
 526     std::set<void *> backup;
 527     if (objects == NULL)
 528         objects = &backup;
 529
 530     CYPool pool;
 531     std::ostringstream str;
 532
 533     str << '[';
 534
 535     JSValueRef length(CYGetProperty(context, _this, length_s));
 536     bool comma(false);
 537
 538     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 539         if (comma)
 540             str << ',';
 541         else
 542             comma = true;
 543
 544         try {
 545             JSValueRef value(CYGetProperty(context, _this, index));
 546             if (!JSValueIsUndefined(context, value))
 547                 str << CYPoolCCYON(pool, context, value, *objects);
 548             else {
 549                 str << ',';
 550                 comma = false;
 551             }
 552         } catch (const CYException &error) {
 553             str << "@error";
 554         }
 555     }
 556
 557     str << ']';
 558
 559     std::string value(str.str());
 560     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 561 } CYCatch(NULL) }
 562
 563 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 564     CYPool pool;
 565     std::ostringstream str;
 566
 567     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 568     CYStringify(str, string.data, string.size);
 569
 570     std::string value(str.str());
 571     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 572 } CYCatch(NULL) }
 573
 574 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 575     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 576     return JSObjectMake(context, Pointer_, internal);
 577 }
 578
 579 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 580     CString *internal(new CString(pointer, context, owner));
 581     return JSObjectMake(context, CString_, internal);
 582 }
 583
 584 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 585     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 586 }
 587
 588 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 589     cy::Functor *internal;
 590     if (*cache != NULL)
 591         internal = reinterpret_cast<cy::Functor *>(*cache);
 592     else {
 593         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 594         if (function == NULL)
 595             return NULL;
 596
 597         internal = new cy::Functor(encoding, function);
 598         *cache = internal;
 599     }
 600
 601     ++internal->count_;
 602     return JSObjectMake(context, Functor_, internal);
 603 }
 604
 605 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 606     return CYGetOffset(CYPoolCString(pool, context, value), index);
 607 }
 608
 609 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 610     if (value == NULL)
 611         return NULL;
 612     else switch (JSValueGetType(context, value)) {
 613         case kJSTypeNull:
 614             return NULL;
 615         case kJSTypeObject: {
 616             JSObjectRef object((JSObjectRef) value);
 617             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 618                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 619                 return internal->value_;
 620             }
 621             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 622             if (CYIsCallable(context, toPointer)) {
 623                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 624                 _assert(value != NULL);
 625                 return CYCastPointer_(context, value, guess);
 626             }
 627         } default:
 628             if (guess != NULL)
 629                 *guess = true;
 630         case kJSTypeNumber:
 631             double number(CYCastDouble(context, value));
 632             if (!std::isnan(number))
 633                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 634             if (guess == NULL)
 635                 throw CYJSError(context, "cannot convert value to pointer");
 636             else {
 637                 *guess = true;
 638                 return NULL;
 639             }
 640     }
 641 }
 642
 643 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 644     switch (type->primitive) {
 645         case sig::boolean_P:
 646             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 647         break;
 648
 649 #define CYPoolFFI_(primitive, native) \
 650         case sig::primitive ## _P: \
 651             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 652         break;
 653
 654         CYPoolFFI_(uchar, unsigned char)
 655         CYPoolFFI_(char, char)
 656         CYPoolFFI_(ushort, unsigned short)
 657         CYPoolFFI_(short, short)
 658         CYPoolFFI_(ulong, unsigned long)
 659         CYPoolFFI_(long, long)
 660         CYPoolFFI_(uint, unsigned int)
 661         CYPoolFFI_(int, int)
 662         CYPoolFFI_(ulonglong, unsigned long long)
 663         CYPoolFFI_(longlong, long long)
 664         CYPoolFFI_(float, float)
 665         CYPoolFFI_(double, double)
 666
 667         case sig::array_P: {
 668             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 669             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 670             for (size_t index(0); index != type->data.data.size; ++index) {
 671                 ffi_type *field(ffi->elements[index]);
 672
 673                 JSValueRef rhs;
 674                 if (aggregate == NULL)
 675                     rhs = value;
 676                 else {
 677                     rhs = CYGetProperty(context, aggregate, index);
 678                     if (JSValueIsUndefined(context, rhs))
 679                         throw CYJSError(context, "unable to extract array value");
 680                 }
 681
 682                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 683                 // XXX: alignment?
 684                 base += field->size;
 685             }
 686         } break;
 687
 688         case sig::pointer_P:
 689             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 690         break;
 691
 692         case sig::string_P: {
 693             bool guess(false);
 694             *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 695             if (guess && pool != NULL)
 696                 *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 697         } break;
 698
 699         case sig::struct_P: {
 700             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 701             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 702             for (size_t index(0); index != type->data.signature.count; ++index) {
 703                 sig::Element *element(&type->data.signature.elements[index]);
 704                 ffi_type *field(ffi->elements[index]);
 705
 706                 JSValueRef rhs;
 707                 if (aggregate == NULL)
 708                     rhs = value;
 709                 else {
 710                     rhs = CYGetProperty(context, aggregate, index);
 711                     if (JSValueIsUndefined(context, rhs)) {
 712                         if (element->name != NULL)
 713                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 714                         else
 715                             goto undefined;
 716                         if (JSValueIsUndefined(context, rhs)) undefined:
 717                             throw CYJSError(context, "unable to extract structure value");
 718                     }
 719                 }
 720
 721                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 722                 // XXX: alignment?
 723                 base += field->size;
 724             }
 725         } break;
 726
 727         case sig::void_P:
 728         break;
 729
 730         default:
 731             for (CYHook *hook : GetHooks())
 732                 if (hook->PoolFFI != NULL)
 733                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 734                         return;
 735
 736             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 737     }
 738 }
 739
 740 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 741     switch (type->primitive) {
 742         case sig::boolean_P:
 743             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 744
 745 #define CYFromFFI_(primitive, native) \
 746         case sig::primitive ## _P: \
 747             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 748
 749         CYFromFFI_(uchar, unsigned char)
 750         CYFromFFI_(char, char)
 751         CYFromFFI_(ushort, unsigned short)
 752         CYFromFFI_(short, short)
 753         CYFromFFI_(ulong, unsigned long)
 754         CYFromFFI_(long, long)
 755         CYFromFFI_(uint, unsigned int)
 756         CYFromFFI_(int, int)
 757         CYFromFFI_(ulonglong, unsigned long long)
 758         CYFromFFI_(longlong, long long)
 759         CYFromFFI_(float, float)
 760         CYFromFFI_(double, double)
 761
 762         case sig::array_P:
 763             if (void *pointer = data)
 764                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 765             else goto null;
 766
 767         case sig::pointer_P:
 768             if (void *pointer = *reinterpret_cast<void **>(data))
 769                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 770             else goto null;
 771
 772         case sig::string_P:
 773             if (char *pointer = *reinterpret_cast<char **>(data))
 774                 return CYMakeCString(context, pointer, owner);
 775             else goto null;
 776
 777         case sig::struct_P:
 778             return CYMakeStruct(context, data, type, ffi, owner);
 779         case sig::void_P:
 780             return CYJSUndefined(context);
 781
 782         null:
 783             return CYJSNull(context);
 784         default:
 785             for (CYHook *hook : GetHooks())
 786                 if (hook->FromFFI != NULL)
 787                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 788                         return value;
 789
 790             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 791     }
 792 }
 793
 794 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 795     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 796
 797     JSContextRef context(internal->context_);
 798
 799     size_t count(internal->cif_.nargs);
 800     JSValueRef values[count];
 801
 802     for (size_t index(0); index != count; ++index)
 803         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 804
 805     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 806     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 807 }
 808
 809 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 810     return CYCallAsFunction(context, function, NULL, count, values);
 811 }
 812
 813 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 814     // XXX: in case of exceptions this will leak
 815     // XXX: in point of fact, this may /need/ to leak :(
 816     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 817
 818 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 819     void *executable;
 820     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 821
 822     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 823     _assert(status == FFI_OK);
 824
 825     internal->value_ = executable;
 826 #else
 827     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 828         NULL, sizeof(ffi_closure),
 829         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 830         -1, 0
 831     )));
 832
 833     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 834     _assert(status == FFI_OK);
 835
 836     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 837
 838     internal->value_ = closure;
 839 #endif
 840
 841     return internal;
 842 }
 843
 844 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 845     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 846     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 847     // XXX: see above notes about needing to leak
 848     JSValueProtect(CYGetJSContext(context), object);
 849     return object;
 850 }
 851
 852 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 853     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 854 }
 855
 856 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 857     return CYCastJSObject(context, CYGetCachedValue(context, name));
 858 }
 859
 860 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 861     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 862
 863     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 864     if (function) {
 865         JSObjectRef function(CYCastJSObject(context, value));
 866         return CYMakeFunctor(context, function, signature);
 867     } else {
 868         void (*function)()(CYCastPointer<void (*)()>(context, value));
 869         return CYMakeFunctor(context, function, signature);
 870     }
 871 }
 872
 873 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 874     CYPool pool;
 875     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 876     char *string(static_cast<char *>(internal->value_));
 877
 878     ssize_t offset;
 879     if (!CYGetOffset(pool, context, property, offset))
 880         return NULL;
 881
 882     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 883 } CYCatch(NULL) }
 884
 885 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 886     CYPool pool;
 887     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 888     char *string(static_cast<char *>(internal->value_));
 889
 890     ssize_t offset;
 891     if (!CYGetOffset(pool, context, property, offset))
 892         return false;
 893
 894     const char *data(CYPoolCString(pool, context, value));
 895     string[offset] = *data;
 896     return true;
 897 } CYCatch(false) }
 898
 899 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 900     Type_privateData *typical(internal->type_);
 901     sig::Type *type(typical->type_);
 902     if (type == NULL)
 903         return false;
 904
 905     const char *name(CYPoolCString(pool, context, property));
 906     size_t length(strlen(name));
 907     double number(CYCastDouble(name, length));
 908
 909     size_t count(type->data.signature.count);
 910
 911     if (std::isnan(number)) {
 912         if (property == NULL)
 913             return false;
 914
 915         sig::Element *elements(type->data.signature.elements);
 916
 917         for (size_t local(0); local != count; ++local) {
 918             sig::Element *element(&elements[local]);
 919             if (element->name != NULL && strcmp(name, element->name) == 0) {
 920                 index = local;
 921                 goto base;
 922             }
 923         }
 924
 925         return false;
 926     } else {
 927         index = static_cast<ssize_t>(number);
 928         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 929             return false;
 930     }
 931
 932   base:
 933     ffi_type **elements(typical->GetFFI()->elements);
 934
 935     base = reinterpret_cast<uint8_t *>(internal->value_);
 936     for (ssize_t local(0); local != index; ++local)
 937         base += elements[local]->size;
 938
 939     return true;
 940 }
 941
 942 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 943     CYPool pool;
 944     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 945
 946     if (JSStringIsEqual(property, length_s))
 947         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 948
 949     Type_privateData *typical(internal->type_);
 950     if (typical->type_ == NULL)
 951         return NULL;
 952     sig::Type &type(*typical->type_);
 953
 954     ssize_t offset;
 955     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 956         offset = 0;
 957     else if (!CYGetOffset(pool, context, property, offset))
 958         return NULL;
 959
 960     if (type.primitive == sig::function_P)
 961         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 962
 963     ffi_type *ffi(typical->GetFFI());
 964
 965     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 966     base += ffi->size * offset;
 967
 968     JSObjectRef owner(internal->GetOwner() ?: object);
 969     return CYFromFFI(context, &type, ffi, base, false, owner);
 970 } CYCatch(NULL) }
 971
 972 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 973     CYPool pool;
 974     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 975     Type_privateData *typical(internal->type_);
 976
 977     if (typical->type_ == NULL)
 978         return false;
 979
 980     ssize_t offset;
 981     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 982         offset = 0;
 983     else if (!CYGetOffset(pool, context, property, offset))
 984         return false;
 985
 986     ffi_type *ffi(typical->GetFFI());
 987
 988     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 989     base += ffi->size * offset;
 990
 991     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 992     return true;
 993 } CYCatch(false) }
 994
 995 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 996     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 997     Type_privateData *typical(internal->type_);
 998     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 999 } CYCatch(NULL) }
1000
1001 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1002     CYPool pool;
1003     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1004     Type_privateData *typical(internal->type_);
1005
1006     ssize_t index;
1007     uint8_t *base;
1008
1009     if (!Index_(pool, context, internal, property, index, base))
1010         return NULL;
1011
1012     JSObjectRef owner(internal->GetOwner() ?: object);
1013
1014     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
1015 } CYCatch(NULL) }
1016
1017 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1018     CYPool pool;
1019     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1020     Type_privateData *typical(internal->type_);
1021
1022     ssize_t index;
1023     uint8_t *base;
1024
1025     if (!Index_(pool, context, internal, property, index, base))
1026         return false;
1027
1028     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
1029     return true;
1030 } CYCatch(false) }
1031
1032 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1033     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1034     Type_privateData *typical(internal->type_);
1035     sig::Type *type(typical->type_);
1036
1037     if (type == NULL)
1038         return;
1039
1040     size_t count(type->data.signature.count);
1041     sig::Element *elements(type->data.signature.elements);
1042
1043     char number[32];
1044
1045     for (size_t index(0); index != count; ++index) {
1046         const char *name;
1047         name = elements[index].name;
1048
1049         if (name == NULL) {
1050             sprintf(number, "%zu", index);
1051             name = number;
1052         }
1053
1054         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1055     }
1056 }
1057
1058 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1059     ffi_call(cif, function, value, values);
1060 }
1061
1062 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)()) {
1063     if (setups + count != signature->count - 1)
1064         throw CYJSError(context, "incorrect number of arguments to ffi function");
1065
1066     size_t size(setups + count);
1067     void *values[size];
1068     memcpy(values, setup, sizeof(void *) * setups);
1069
1070     for (size_t index(setups); index != size; ++index) {
1071         sig::Element *element(&signature->elements[index + 1]);
1072         ffi_type *ffi(cif->arg_types[index]);
1073         // XXX: alignment?
1074         values[index] = new(pool) uint8_t[ffi->size];
1075         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
1076     }
1077
1078     uint8_t value[cif->rtype->size];
1079
1080     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1081     // XXX: this only supports one hook, but it is a bad idea anyway
1082     for (CYHook *hook : GetHooks())
1083         if (hook->CallFunction != NULL)
1084             call = hook->CallFunction;
1085
1086     call(pool, context, cif, function, value, values);
1087     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1088 }
1089
1090 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1091     CYPool pool;
1092     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1093     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1094 } CYCatch(NULL) }
1095
1096 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1097     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1098     if (internal->type_->type_->primitive != sig::function_P)
1099         throw CYJSError(context, "cannot call a pointer to non-function");
1100     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1101     return CYCallAsFunction(context, functor, _this, count, arguments);
1102 } CYCatch(NULL) }
1103
1104 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
1105     Type_privateData *internal(new Type_privateData(encoding));
1106     return JSObjectMake(context, Type_privateData::Class_, internal);
1107 }
1108
1109 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1110     Type_privateData *internal(new Type_privateData(type));
1111     return JSObjectMake(context, Type_privateData::Class_, internal);
1112 }
1113
1114 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1115     CYPool pool;
1116
1117     sig::Type type;
1118     type.name = NULL;
1119     type.flags = 0;
1120
1121     type.primitive = sig::function_P;
1122     sig::Copy(pool, type.data.signature, *signature);
1123
1124     return CYMakeType(context, &type);
1125 }
1126
1127 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1128     JSObjectRef global(CYGetGlobalObject(context));
1129     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1130     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1131
1132     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1133         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1134             if (CYHasProperty(context, space, property))
1135                 return true;
1136
1137     CYPool pool;
1138     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1139
1140     size_t length(name.size);
1141     char keyed[length + 2];
1142     memcpy(keyed + 1, name.data, length + 1);
1143
1144     static const char *modes = "0124";
1145     for (size_t i(0); i != 4; ++i) {
1146         keyed[0] = modes[i];
1147         if (CYBridgeHash(keyed, length + 1) != NULL)
1148             return true;
1149     }
1150
1151     return false;
1152 }
1153
1154 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1155     JSObjectRef global(CYGetGlobalObject(context));
1156     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1157     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1158
1159     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1160         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1161             if (JSValueRef value = CYGetProperty(context, space, property))
1162                 if (!JSValueIsUndefined(context, value))
1163                     return value;
1164
1165     CYPool pool;
1166     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1167
1168     size_t length(name.size);
1169     char keyed[length + 2];
1170     memcpy(keyed + 1, name.data, length + 1);
1171
1172     static const char *modes = "0124";
1173     for (size_t i(0); i != 4; ++i) {
1174         char mode(modes[i]);
1175         keyed[0] = mode;
1176
1177         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1178             switch (mode) {
1179                 case '0':
1180                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1181
1182                 case '1':
1183                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1184
1185                 case '2':
1186                     if (void *symbol = CYCastSymbol(name.data)) {
1187                         // XXX: this is horrendously inefficient
1188                         sig::Signature signature;
1189                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1190                         ffi_cif cif;
1191                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1192                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1193                     } else return NULL;
1194
1195                 // XXX: implement case 3
1196                 case '4':
1197                     return CYMakeType(context, entry->value_);
1198             }
1199     }
1200
1201     return NULL;
1202 } CYCatch(NULL) }
1203
1204 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1205     JSObjectRef global(CYGetGlobalObject(context));
1206     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1207     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1208
1209     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1210         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1211             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1212             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1213                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1214             JSPropertyNameArrayRelease(subset);
1215         }
1216 }
1217
1218 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1219     if (count != 1)
1220         throw CYJSError(context, "incorrect number of arguments to CString constructor");
1221     char *value(CYCastPointer<char *>(context, arguments[0]));
1222     return CYMakeCString(context, value, NULL);
1223 } CYCatch(NULL) }
1224
1225 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1226     if (count != 2)
1227         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1228
1229     CYPool pool;
1230
1231     void *value(CYCastPointer<void *>(context, arguments[0]));
1232     const char *type(CYPoolCString(pool, context, arguments[1]));
1233
1234     sig::Signature signature;
1235     sig::Parse(pool, &signature, type, &Structor_);
1236
1237     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1238 } CYCatch(NULL) }
1239
1240 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1241     CYPool pool;
1242
1243     if (false) {
1244     } else if (count == 1) {
1245         const char *type(CYPoolCString(pool, context, arguments[0]));
1246         return CYMakeType(context, type);
1247     } else if (count == 2) {
1248         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1249         size_t count(CYArrayLength(context, types));
1250
1251         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1252
1253         sig::Type type;
1254         type.name = NULL;
1255         type.flags = 0;
1256
1257         type.primitive = sig::struct_P;
1258         type.data.signature.elements = new(pool) sig::Element[count];
1259         type.data.signature.count = count;
1260
1261         for (size_t i(0); i != count; ++i) {
1262             sig::Element &element(type.data.signature.elements[i]);
1263             element.offset = _not(size_t);
1264
1265             JSValueRef name(CYArrayGet(context, names, i));
1266             if (JSValueIsUndefined(context, name))
1267                 element.name = NULL;
1268             else
1269                 element.name = CYPoolCString(pool, context, name);
1270
1271             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1272             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1273             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1274             element.type = internal->type_;
1275         }
1276
1277         return CYMakeType(context, &type);
1278     } else {
1279         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1280     }
1281 } CYCatch(NULL) }
1282
1283 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1284     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1285
1286     CYPool pool;
1287
1288     sig::Type type;
1289     type.name = NULL;
1290     type.flags = 0;
1291
1292     type.primitive = primitive;
1293     type.data.signature.elements = new(pool) sig::Element[1 + count];
1294     type.data.signature.count = 1 + count;
1295
1296     type.data.signature.elements[0].name = NULL;
1297     type.data.signature.elements[0].type = internal->type_;
1298     type.data.signature.elements[0].offset = _not(size_t);
1299
1300     for (size_t i(0); i != count; ++i) {
1301         sig::Element &element(type.data.signature.elements[i + 1]);
1302         element.name = NULL;
1303         element.offset = _not(size_t);
1304
1305         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1306         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1307         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1308
1309         element.type = internal->type_;
1310     }
1311
1312     return CYMakeType(context, &type);
1313 } CYCatch(NULL) }
1314
1315 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1316     if (count != 1)
1317         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1318     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1319
1320     CYPool pool;
1321     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1322     if (index == _not(size_t))
1323         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1324
1325     sig::Type type;
1326     type.name = NULL;
1327     type.flags = 0;
1328
1329     type.primitive = sig::array_P;
1330     type.data.data.type = internal->type_;
1331     type.data.data.size = index;
1332
1333     return CYMakeType(context, &type);
1334 } CYCatch(NULL) }
1335
1336 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1337     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1338 }
1339
1340 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1341     if (count != 0)
1342         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1343     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1344
1345     sig::Type type(*internal->type_);
1346     type.flags |= JOC_TYPE_CONST;
1347     return CYMakeType(context, &type);
1348 } CYCatch(NULL) }
1349
1350 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1351     if (count != 0)
1352         throw CYJSError(context, "incorrect number of arguments to Type.long");
1353     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1354
1355     sig::Type type(*internal->type_);
1356
1357     switch (type.primitive) {
1358         case sig::short_P: type.primitive = sig::int_P; break;
1359         case sig::int_P: type.primitive = sig::long_P; break;
1360         case sig::long_P: type.primitive = sig::longlong_P; break;
1361         default: throw CYJSError(context, "invalid type argument to Type.long");
1362     }
1363
1364     return CYMakeType(context, &type);
1365 } CYCatch(NULL) }
1366
1367 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1368     if (count != 0)
1369         throw CYJSError(context, "incorrect number of arguments to Type.short");
1370     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1371
1372     sig::Type type(*internal->type_);
1373
1374     switch (type.primitive) {
1375         case sig::int_P: type.primitive = sig::short_P; break;
1376         case sig::long_P: type.primitive = sig::int_P; break;
1377         case sig::longlong_P: type.primitive = sig::long_P; break;
1378         default: throw CYJSError(context, "invalid type argument to Type.short");
1379     }
1380
1381     return CYMakeType(context, &type);
1382 } CYCatch(NULL) }
1383
1384 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1385     if (count != 0)
1386         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1387     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1388
1389     sig::Type type(*internal->type_);
1390
1391     switch (type.primitive) {
1392         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1393         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1394         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1395         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1396         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1397         default: throw CYJSError(context, "invalid type argument to Type.signed");
1398     }
1399
1400     return CYMakeType(context, &type);
1401 } CYCatch(NULL) }
1402
1403 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1404     if (count != 0)
1405         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1406     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1407
1408     sig::Type type(*internal->type_);
1409
1410     switch (type.primitive) {
1411         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1412         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1413         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1414         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1415         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1416         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1417     }
1418
1419     return CYMakeType(context, &type);
1420 } CYCatch(NULL) }
1421
1422 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1423     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1424 }
1425
1426 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1427     if (count != 0)
1428         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1429     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1430
1431     sig::Type type;
1432     type.name = NULL;
1433
1434     if (internal->type_->primitive == sig::char_P) {
1435         type.flags = internal->type_->flags;
1436         type.primitive = sig::string_P;
1437         type.data.data.type = NULL;
1438         type.data.data.size = 0;
1439     } else {
1440         type.flags = 0;
1441         type.primitive = sig::pointer_P;
1442         type.data.data.type = internal->type_;
1443         type.data.data.size = 0;
1444     }
1445
1446     return CYMakeType(context, &type);
1447 } CYCatch(NULL) }
1448
1449 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1450     if (count != 1)
1451         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1452     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1453
1454     CYPool pool;
1455     const char *name(CYPoolCString(pool, context, arguments[0]));
1456
1457     sig::Type type(*internal->type_);
1458     type.name = name;
1459     return CYMakeType(context, &type);
1460 } CYCatch(NULL) }
1461
1462 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1463     if (count != 1)
1464         throw CYJSError(context, "incorrect number of arguments to type cast function");
1465     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1466
1467     if (internal->type_->primitive == sig::function_P)
1468         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1469
1470     sig::Type *type(internal->type_);
1471     ffi_type *ffi(internal->GetFFI());
1472     // XXX: alignment?
1473     uint8_t value[ffi->size];
1474     CYPool pool;
1475     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1476     return CYFromFFI(context, type, ffi, value);
1477 } CYCatch(NULL) }
1478
1479 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1480     if (count != 0)
1481         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1482     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1483
1484     sig::Type *type(internal->type_);
1485     size_t length;
1486
1487     if (type->primitive != sig::array_P)
1488         length = _not(size_t);
1489     else {
1490         length = type->data.data.size;
1491         type = type->data.data.type;
1492     }
1493
1494     JSObjectRef pointer(CYMakePointer(context, NULL, length, type, NULL, NULL));
1495     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1496     value->value_ = value->pool_->malloc<void>(internal->GetFFI()->size);
1497     memset(value->value_, 0, internal->GetFFI()->size);
1498     return pointer;
1499 } CYCatch(NULL) }
1500
1501 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1502     if (count != 2)
1503         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1504     CYPool pool;
1505     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1506     sig::Signature signature;
1507     sig::Parse(pool, &signature, encoding, &Structor_);
1508     return CYMakeFunctor(context, arguments[0], signature);
1509 } CYCatch(NULL) }
1510
1511 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1512     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1513
1514     sig::Type type;
1515     type.name = NULL;
1516     type.flags = 0;
1517
1518     type.primitive = sig::char_P;
1519     type.data.data.type = NULL;
1520     type.data.data.size = 0;
1521
1522     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1523 } CYCatch(NULL) }
1524
1525 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1526     CYPool pool;
1527     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1528
1529     sig::Type type;
1530     type.name = NULL;
1531     type.flags = 0;
1532
1533     type.primitive = sig::function_P;
1534     sig::Copy(pool, type.data.signature, internal->signature_);
1535
1536     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1537 } CYCatch(NULL) }
1538
1539 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1540     return _this;
1541 } CYCatch(NULL) }
1542
1543 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1544     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1545     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1546 } CYCatch(NULL) }
1547
1548 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1549     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1550 }
1551
1552 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1553     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1554     std::ostringstream str;
1555     Dl_info info;
1556     if (internal->value_ == NULL)
1557         str << "NULL";
1558     else if (dladdr(internal->value_, &info) == 0)
1559         str << internal->value_;
1560     else {
1561         str << info.dli_sname;
1562         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1563         if (offset != 0)
1564             str << "+0x" << std::hex << offset;
1565     }
1566     std::string value(str.str());
1567     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1568 } CYCatch(NULL) }
1569
1570 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1571     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1572
1573     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1574     if (internal->length_ != _not(size_t)) {
1575         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1576         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1577         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1578     } else if (internal->type_->type_ == NULL) pointer: {
1579         CYLocalPool pool;
1580         std::ostringstream str;
1581
1582         sig::Type type;
1583         type.name = NULL;
1584         type.flags = 0;
1585
1586         type.primitive = sig::pointer_P;
1587         type.data.data.type = internal->type_->type_;
1588         type.data.data.size = 0;
1589
1590         CYOptions options;
1591         CYOutput output(*str.rdbuf(), options);
1592         (new(pool) CYTypeExpression(Decode(pool, &type)))->Output(output, CYNoFlags);
1593
1594         str << "(" << internal->value_ << ")";
1595         std::string value(str.str());
1596         return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1597     } else try {
1598         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1599         if (JSValueIsUndefined(context, value))
1600             goto pointer;
1601         CYPool pool;
1602         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1603     } catch (const CYException &e) {
1604         goto pointer;
1605     }
1606 } CYCatch(NULL) }
1607
1608 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1609     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1610     char *string(static_cast<char *>(internal->value_));
1611     return CYCastJSValue(context, strlen(string));
1612 } CYCatch(NULL) }
1613
1614 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1615     sig::Type type;
1616     type.name = NULL;
1617     type.flags = 0;
1618
1619     type.primitive = sig::char_P;
1620     type.data.data.type = NULL;
1621     type.data.data.size = 0;
1622
1623     return CYMakeType(context, &type);
1624 } CYCatch(NULL) }
1625
1626 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1627     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1628     return CYMakeType(context, internal->type_->type_);
1629 } CYCatch(NULL) }
1630
1631 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1632     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1633     const char *string(static_cast<const char *>(internal->value_));
1634     std::ostringstream str;
1635     str << "&";
1636     CYStringify(str, string, strlen(string), true);
1637     std::string value(str.str());
1638     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1639 } CYCatch(NULL) }
1640
1641 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1642     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1643     const char *string(static_cast<const char *>(internal->value_));
1644     return CYCastJSValue(context, string);
1645 } CYCatch(NULL) }
1646
1647 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1648     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1649     return CYMakeType(context, &internal->signature_);
1650 } CYCatch(NULL) }
1651
1652 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1653     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1654     return CYCastJSValue(context, internal->GetFFI()->alignment);
1655 } CYCatch(NULL) }
1656
1657 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1658     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1659     return CYCastJSValue(context, internal->type_->name);
1660 } CYCatch(NULL) }
1661
1662 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1663     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1664     return CYCastJSValue(context, internal->GetFFI()->size);
1665 } CYCatch(NULL) }
1666
1667 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1668     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1669     CYPool pool;
1670     const char *type(sig::Unparse(pool, internal->type_));
1671     return CYCastJSValue(context, CYJSString(type));
1672 } CYCatch(NULL) }
1673
1674 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1675     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1676     CYLocalPool pool;
1677     std::stringbuf out;
1678     CYOptions options;
1679     CYOutput output(out, options);
1680     (new(pool) CYTypeExpression(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1681     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1682 } CYCatch(NULL) }
1683
1684 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1685     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1686 }
1687
1688 static JSStaticFunction CString_staticFunctions[6] = {
1689     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1690     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1691     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1692     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1693     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1694     {NULL, NULL, 0}
1695 };
1696
1697 static JSStaticValue CString_staticValues[3] = {
1698     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1699     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1700     {NULL, NULL, NULL, 0}
1701 };
1702
1703 static JSStaticFunction Pointer_staticFunctions[5] = {
1704     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1705     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1706     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1707     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1708     {NULL, NULL, 0}
1709 };
1710
1711 static JSStaticValue Pointer_staticValues[2] = {
1712     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1713     {NULL, NULL, NULL, 0}
1714 };
1715
1716 static JSStaticFunction Struct_staticFunctions[2] = {
1717     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1718     {NULL, NULL, 0}
1719 };
1720
1721 static JSStaticFunction Functor_staticFunctions[5] = {
1722     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1723     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1724     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1725     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1726     {NULL, NULL, 0}
1727 };
1728
1729 namespace cy {
1730     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1731 }
1732
1733 static JSStaticValue Functor_staticValues[2] = {
1734     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1735     {NULL, NULL, NULL, 0}
1736 };
1737
1738 namespace cy {
1739     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1740 }
1741
1742 static JSStaticValue Type_staticValues[4] = {
1743     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1744     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1745     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1746     {NULL, NULL, NULL, 0}
1747 };
1748
1749 static JSStaticFunction Type_staticFunctions[14] = {
1750     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1751     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1752     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1753     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1754     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1755     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1756     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1757     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1758     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1759     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1760     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1761     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1762     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1763     {NULL, NULL, 0}
1764 };
1765
1766 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1767
1768 _visible void CYSetArgs(int argc, const char *argv[]) {
1769     JSContextRef context(CYGetJSContext());
1770     JSValueRef args[argc];
1771     for (int i(0); i != argc; ++i)
1772         args[i] = CYCastJSValue(context, argv[i]);
1773
1774     JSObjectRef array;
1775     if (JSObjectMakeArray$ != NULL)
1776         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1777     else {
1778         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1779         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1780         array = CYCastJSObject(context, value);
1781     }
1782
1783     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1784     CYSetProperty(context, System, CYJSString("args"), array);
1785 }
1786
1787 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1788     return JSContextGetGlobalObject(context);
1789 }
1790
1791 // XXX: this is neither exceptin safe nor even terribly sane
1792 class ExecutionHandle {
1793   private:
1794     JSContextRef context_;
1795     std::vector<void *> handles_;
1796
1797   public:
1798     ExecutionHandle(JSContextRef context) :
1799         context_(context)
1800     {
1801         handles_.resize(GetHooks().size());
1802         for (size_t i(0); i != GetHooks().size(); ++i) {
1803             CYHook *hook(GetHooks()[i]);
1804             if (hook->ExecuteStart != NULL)
1805                 handles_[i] = (*hook->ExecuteStart)(context_);
1806             else
1807                 handles_[i] = NULL;
1808         }
1809     }
1810
1811     ~ExecutionHandle() {
1812         for (size_t i(GetHooks().size()); i != 0; --i) {
1813             CYHook *hook(GetHooks()[i-1]);
1814             if (hook->ExecuteEnd != NULL)
1815                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1816         }
1817     }
1818 };
1819
1820 static volatile bool cancel_;
1821
1822 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1823     return cancel_;
1824 }
1825
1826 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1827     ExecutionHandle handle(context);
1828
1829     cancel_ = false;
1830     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1831         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1832
1833     try {
1834         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1835         if (JSValueIsUndefined(context, result))
1836             return NULL;
1837
1838         std::set<void *> objects;
1839         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1840         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1841
1842         return json;
1843     } catch (const CYException &error) {
1844         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1845     }
1846 }
1847
1848 _visible void CYCancel() {
1849     cancel_ = true;
1850 }
1851
1852 static bool initialized_ = false;
1853
1854 void CYInitializeDynamic() {
1855     if (!initialized_)
1856         initialized_ = true;
1857     else return;
1858
1859     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1860     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1861
1862     JSClassDefinition definition;
1863
1864     definition = kJSClassDefinitionEmpty;
1865     definition.className = "All";
1866     definition.hasProperty = &All_hasProperty;
1867     definition.getProperty = &All_getProperty;
1868     definition.getPropertyNames = &All_getPropertyNames;
1869     All_ = JSClassCreate(&definition);
1870
1871     definition = kJSClassDefinitionEmpty;
1872     definition.className = "Context";
1873     definition.finalize = &CYFinalize;
1874     Context_ = JSClassCreate(&definition);
1875
1876     definition = kJSClassDefinitionEmpty;
1877     definition.className = "CString";
1878     definition.staticFunctions = CString_staticFunctions;
1879     definition.staticValues = CString_staticValues;
1880     definition.getProperty = &CString_getProperty;
1881     definition.setProperty = &CString_setProperty;
1882     definition.finalize = &CYFinalize;
1883     CString_ = JSClassCreate(&definition);
1884
1885     definition = kJSClassDefinitionEmpty;
1886     definition.className = "Functor";
1887     definition.staticFunctions = cy::Functor::StaticFunctions;
1888     definition.staticValues = Functor_staticValues;
1889     definition.callAsFunction = &Functor_callAsFunction;
1890     definition.finalize = &CYFinalize;
1891     Functor_ = JSClassCreate(&definition);
1892
1893     definition = kJSClassDefinitionEmpty;
1894     definition.className = "Pointer";
1895     definition.staticFunctions = Pointer_staticFunctions;
1896     definition.staticValues = Pointer_staticValues;
1897     definition.callAsFunction = &Pointer_callAsFunction;
1898     definition.getProperty = &Pointer_getProperty;
1899     definition.setProperty = &Pointer_setProperty;
1900     definition.finalize = &CYFinalize;
1901     Pointer_ = JSClassCreate(&definition);
1902
1903     definition = kJSClassDefinitionEmpty;
1904     definition.className = "Struct";
1905     definition.staticFunctions = Struct_staticFunctions;
1906     definition.getProperty = &Struct_getProperty;
1907     definition.setProperty = &Struct_setProperty;
1908     definition.getPropertyNames = &Struct_getPropertyNames;
1909     definition.finalize = &CYFinalize;
1910     Struct_ = JSClassCreate(&definition);
1911
1912     definition = kJSClassDefinitionEmpty;
1913     definition.className = "Type";
1914     definition.staticValues = Type_staticValues;
1915     definition.staticFunctions = Type_staticFunctions;
1916     definition.callAsFunction = &Type_callAsFunction;
1917     definition.callAsConstructor = &Type_callAsConstructor;
1918     definition.finalize = &CYFinalize;
1919     Type_privateData::Class_ = JSClassCreate(&definition);
1920
1921     definition = kJSClassDefinitionEmpty;
1922     definition.className = "Global";
1923     //definition.getProperty = &Global_getProperty;
1924     Global_ = JSClassCreate(&definition);
1925
1926     Array_s = JSStringCreateWithUTF8CString("Array");
1927     cy_s = JSStringCreateWithUTF8CString("$cy");
1928     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1929     length_s = JSStringCreateWithUTF8CString("length");
1930     message_s = JSStringCreateWithUTF8CString("message");
1931     name_s = JSStringCreateWithUTF8CString("name");
1932     pop_s = JSStringCreateWithUTF8CString("pop");
1933     prototype_s = JSStringCreateWithUTF8CString("prototype");
1934     push_s = JSStringCreateWithUTF8CString("push");
1935     splice_s = JSStringCreateWithUTF8CString("splice");
1936     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1937     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1938     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1939     toString_s = JSStringCreateWithUTF8CString("toString");
1940     weak_s = JSStringCreateWithUTF8CString("weak");
1941
1942     Result_ = JSStringCreateWithUTF8CString("_");
1943
1944     for (CYHook *hook : GetHooks())
1945         if (hook->Initialize != NULL)
1946             (*hook->Initialize)();
1947 }
1948
1949 void CYThrow(JSContextRef context, JSValueRef value) {
1950     if (value != NULL)
1951         throw CYJSError(context, value);
1952 }
1953
1954 const char *CYJSError::PoolCString(CYPool &pool) const {
1955     std::set<void *> objects;
1956     // XXX: this used to be CYPoolCString
1957     return CYPoolCCYON(pool, context_, value_, objects);
1958 }
1959
1960 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
1961     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
1962     return value_;
1963 }
1964
1965 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
1966     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
1967     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1968     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1969 }
1970
1971 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
1972     return CYCastJSError(context, name, message_);
1973 }
1974
1975 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1976     _assert(context != NULL);
1977
1978     CYPool pool;
1979
1980     va_list args;
1981     va_start(args, format);
1982     // XXX: there might be a beter way to think about this
1983     const char *message(pool.vsprintf(64, format, args));
1984     va_end(args);
1985
1986     value_ = CYCastJSError(context, "Error", message);
1987 }
1988
1989 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1990     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1991 }
1992
1993 struct CYFile {
1994     void *data_;
1995     size_t size_;
1996
1997     CYFile(void *data, size_t size) :
1998         data_(data),
1999         size_(size)
2000     {
2001     }
2002 };
2003
2004 static void CYFileExit(void *data) {
2005     CYFile *file(reinterpret_cast<CYFile *>(data));
2006     _syscall(munmap(file->data_, file->size_));
2007 }
2008
2009 static void *CYPoolFile(CYPool &pool, const char *path, size_t *psize) {
2010     int fd(_syscall_(open(path, O_RDONLY), 1, ENOENT));
2011     if (fd == -1)
2012         return NULL;
2013
2014     struct stat stat;
2015     _syscall(fstat(fd, &stat));
2016     size_t size(stat.st_size);
2017
2018     *psize = size;
2019
2020     void *base;
2021     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
2022
2023     CYFile *file(new (pool) CYFile(base, size));
2024     pool.atexit(&CYFileExit, file);
2025
2026     _syscall(close(fd));
2027     return base;
2028 }
2029
2030 static CYUTF8String CYPoolFileUTF8String(CYPool &pool, const char *path) {
2031     CYUTF8String data;
2032     data.data = reinterpret_cast<char *>(CYPoolFile(pool, path, &data.size));
2033     return data;
2034 }
2035
2036 static const char *CYPoolLibraryPath(CYPool &pool) {
2037     Dl_info addr;
2038     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2039     char *lib(pool.strdup(addr.dli_fname));
2040
2041     char *slash(strrchr(lib, '/'));
2042     _assert(slash != NULL);
2043     *slash = '\0';
2044
2045     return lib;
2046 }
2047
2048 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2049     _assert(count == 1);
2050     CYPool pool;
2051
2052     const char *name(CYPoolCString(pool, context, arguments[0]));
2053     if (strchr(name, '/') == NULL && (
2054 #ifdef __APPLE__
2055         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2056         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2057 #endif
2058     false))
2059         return CYJSUndefined(context);
2060
2061     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2062     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2063
2064     CYJSString property("exports");
2065
2066     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2067     JSValueRef cache(CYGetProperty(context, modules, path));
2068
2069     JSValueRef result;
2070     if (!JSValueIsUndefined(context, cache)) {
2071         JSObjectRef module(CYCastJSObject(context, cache));
2072         result = CYGetProperty(context, module, property);
2073     } else {
2074         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2075         _assert(code.data != NULL);
2076
2077         size_t length(strlen(name));
2078         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2079             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2080             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2081             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2082             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2083         } else {
2084             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2085             CYSetProperty(context, modules, path, module);
2086
2087             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2088             CYSetProperty(context, module, property, exports);
2089
2090             std::stringstream wrap;
2091             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2092             code = CYPoolCode(pool, *wrap.rdbuf());
2093
2094             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2095             JSObjectRef function(CYCastJSObject(context, value));
2096
2097             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2098             CYCallAsFunction(context, function, NULL, 4, arguments);
2099             result = CYGetProperty(context, module, property);
2100         }
2101     }
2102
2103     return result;
2104 } CYCatch(NULL) }
2105
2106 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2107     CYPool pool;
2108     CYUTF8String code(CYPoolFileUTF8String(pool, path));
2109     if (code.data == NULL)
2110         return false;
2111
2112     CYStream stream(code.data, code.data + code.size);
2113     code = CYPoolCode(pool, stream);
2114     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2115     return true;
2116 }
2117
2118 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2119 }
2120
2121 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2122     CYInitializeDynamic();
2123
2124     JSObjectRef global(CYGetGlobalObject(context));
2125
2126     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2127     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2128
2129 /* Cache Globals {{{ */
2130     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2131     CYSetProperty(context, cy, CYJSString("Array"), Array);
2132
2133     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2134     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2135
2136     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2137     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2138
2139     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2140     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2141
2142     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2143     CYSetProperty(context, cy, CYJSString("Error"), Error);
2144
2145     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2146     CYSetProperty(context, cy, CYJSString("Function"), Function);
2147
2148     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2149     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2150
2151     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2152     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2153
2154     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2155     CYSetProperty(context, cy, CYJSString("Number"), Number);
2156
2157     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2158     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2159
2160     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2161     CYSetProperty(context, cy, CYJSString("Object"), Object);
2162
2163     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2164     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2165
2166     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2167     CYSetProperty(context, cy, CYJSString("String"), String);
2168
2169     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2170     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2171
2172     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2173     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2174 /* }}} */
2175
2176     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2177     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2178
2179     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2180     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2181     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2182     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2183
2184     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2185     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2186     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2187
2188     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2189     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2190     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2191
2192     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2193     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2194
2195     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2196     CYSetProperty(context, cy, CYJSString("modules"), modules);
2197
2198     JSObjectRef all(JSObjectMake(context, All_, NULL));
2199     CYSetProperty(context, cycript, CYJSString("all"), all);
2200
2201     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2202     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2203
2204     if (true) {
2205         JSObjectRef last(NULL), curr(global);
2206
2207         goto next; for (JSValueRef next;;) {
2208             if (JSValueIsNull(context, next))
2209                 break;
2210             last = curr;
2211             curr = CYCastJSObject(context, next);
2212           next:
2213             next = JSObjectGetPrototype(context, curr);
2214         }
2215
2216         CYSetPrototype(context, last, all);
2217     }
2218
2219     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2220     CYSetProperty(context, cy, CYJSString("System"), System);
2221
2222     CYSetProperty(context, all, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2223
2224     CYSetProperty(context, global, CYJSString("system"), System);
2225     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2226     CYSetProperty(context, System, CYJSString("print"), &System_print);
2227
2228     CYSetProperty(context, global, CYJSString("global"), global);
2229
2230 #ifdef __APPLE__
2231     if (&JSWeakObjectMapCreate != NULL) {
2232         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2233         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2234     }
2235 #endif
2236
2237     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
2238         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
2239
2240     CYRunScript(context, "libcycript.cy");
2241
2242     for (CYHook *hook : GetHooks())
2243         if (hook->SetupContext != NULL)
2244             (*hook->SetupContext)(context);
2245
2246     CYArrayPush(context, alls, cycript);
2247 }
2248
2249 static JSGlobalContextRef context_;
2250
2251 _visible JSGlobalContextRef CYGetJSContext() {
2252     CYInitializeDynamic();
2253
2254     if (context_ == NULL) {
2255         context_ = JSGlobalContextCreate(Global_);
2256         CYSetupContext(context_);
2257     }
2258
2259     return context_;
2260 }
2261
2262 _visible void CYDestroyContext() {
2263     if (context_ == NULL)
2264         return;
2265     JSGlobalContextRelease(context_);
2266     context_ = NULL;
2267 }