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     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
 101     return CYCopyJSString(value.data);
 102 }
 103
 104 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 105     if (JSValueIsNull(context, value))
 106         return NULL;
 107     return _jsccall(JSValueToStringCopy, context, value);
 108 }
 109
 110 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 111     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 112 }
 113
 114 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 115     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 116 }
 117
 118 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 119     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 120     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 121     return utf8.data;
 122 }
 123
 124 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 125     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 126 }
 127 /* }}} */
 128 /* Index Offsets {{{ */
 129 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 130     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 131 }
 132 /* }}} */
 133
 134 static JSClassRef All_;
 135 static JSClassRef Context_;
 136 JSClassRef Functor_;
 137 static JSClassRef Global_;
 138 static JSClassRef Pointer_;
 139 static JSClassRef Struct_;
 140
 141 JSStringRef Array_s;
 142 JSStringRef cy_s;
 143 JSStringRef cyi_s;
 144 JSStringRef length_s;
 145 JSStringRef message_s;
 146 JSStringRef name_s;
 147 JSStringRef pop_s;
 148 JSStringRef prototype_s;
 149 JSStringRef push_s;
 150 JSStringRef splice_s;
 151 JSStringRef toCYON_s;
 152 JSStringRef toJSON_s;
 153 JSStringRef toPointer_s;
 154 JSStringRef toString_s;
 155 JSStringRef weak_s;
 156
 157 static JSStringRef Result_;
 158
 159 void CYFinalize(JSObjectRef object) {
 160     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 161     _assert(internal->count_ != _not(unsigned));
 162     if (--internal->count_ == 0)
 163         delete internal;
 164 }
 165
 166 void Structor_(CYPool &pool, sig::Type *&type) {
 167     if (
 168         type->primitive == sig::pointer_P &&
 169         type->data.data.type->primitive == sig::struct_P &&
 170         type->data.data.type->name != NULL &&
 171         strcmp(type->data.data.type->name, "_objc_class") == 0
 172     ) {
 173         type->primitive = sig::typename_P;
 174         type->data.data.type = NULL;
 175         return;
 176     }
 177
 178     if (type->primitive != sig::struct_P || type->name == NULL)
 179         return;
 180
 181     size_t length(strlen(type->name));
 182     char keyed[length + 2];
 183     memcpy(keyed + 1, type->name, length + 1);
 184
 185     static const char *modes = "34";
 186     for (size_t i(0); i != 2; ++i) {
 187         char mode(modes[i]);
 188         keyed[0] = mode;
 189
 190         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 191             switch (mode) {
 192                 case '3':
 193                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 194                 break;
 195
 196                 case '4': {
 197                     sig::Signature signature;
 198                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 199                     type = signature.elements[0].type;
 200                 } break;
 201             }
 202     }
 203 }
 204
 205 JSClassRef Type_privateData::Class_;
 206
 207 struct Context :
 208     CYData
 209 {
 210     JSGlobalContextRef context_;
 211
 212     Context(JSGlobalContextRef context) :
 213         context_(context)
 214     {
 215     }
 216 };
 217
 218 struct Pointer :
 219     CYOwned
 220 {
 221     Type_privateData *type_;
 222     size_t length_;
 223
 224     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 225         CYOwned(value, context, owner),
 226         type_(new(*pool_) Type_privateData(type)),
 227         length_(length)
 228     {
 229     }
 230 };
 231
 232 struct Struct_privateData :
 233     CYOwned
 234 {
 235     Type_privateData *type_;
 236
 237     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 238         CYOwned(NULL, context, owner)
 239     {
 240     }
 241 };
 242
 243 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 244     Struct_privateData *internal(new Struct_privateData(context, owner));
 245     CYPool &pool(*internal->pool_);
 246     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 247     internal->type_ = typical;
 248
 249     if (owner != NULL)
 250         internal->value_ = data;
 251     else {
 252         size_t size(typical->GetFFI()->size);
 253         void *copy(internal->pool_->malloc<void>(size));
 254         memcpy(copy, data, size);
 255         internal->value_ = copy;
 256     }
 257
 258     return JSObjectMake(context, Struct_, internal);
 259 }
 260
 261 static void *CYCastSymbol(const char *name) {
 262     for (CYHook *hook : GetHooks())
 263         if (hook->CastSymbol != NULL)
 264             if (void *value = (*hook->CastSymbol)(name))
 265                 return value;
 266     return dlsym(RTLD_DEFAULT, name);
 267 }
 268
 269 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 270     return JSValueMakeBoolean(context, value);
 271 }
 272
 273 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 274     return JSValueMakeNumber(context, value);
 275 }
 276
 277 #define CYCastJSValue_(Type_) \
 278     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 279         return JSValueMakeNumber(context, static_cast<double>(value)); \
 280     }
 281
 282 CYCastJSValue_(int)
 283 CYCastJSValue_(unsigned int)
 284 CYCastJSValue_(long int)
 285 CYCastJSValue_(long unsigned int)
 286 CYCastJSValue_(long long int)
 287 CYCastJSValue_(long long unsigned int)
 288
 289 JSValueRef CYJSUndefined(JSContextRef context) {
 290     return JSValueMakeUndefined(context);
 291 }
 292
 293 double CYCastDouble(JSContextRef context, JSValueRef value) {
 294     return _jsccall(JSValueToNumber, context, value);
 295 }
 296
 297 bool CYCastBool(JSContextRef context, JSValueRef value) {
 298     return JSValueToBoolean(context, value);
 299 }
 300
 301 JSValueRef CYJSNull(JSContextRef context) {
 302     return JSValueMakeNull(context);
 303 }
 304
 305 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 306     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 307 }
 308
 309 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 310     return CYCastJSValue(context, CYJSString(value));
 311 }
 312
 313 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 314     return _jsccall(JSValueToObject, context, value);
 315 }
 316
 317 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 318     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 319 }
 320
 321 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 322     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 323 }
 324
 325 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 326     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 327 }
 328
 329 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 330     return JSValueIsStrictEqual(context, lhs, rhs);
 331 }
 332
 333 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 334     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 335 }
 336
 337 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 338     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 339 }
 340
 341 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 342     JSValueRef arguments[1];
 343     arguments[0] = value;
 344     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 345     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 346 }
 347
 348 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 349     FILE *file(stdout);
 350
 351     if (count == 0)
 352         fputc('\n', file);
 353     else {
 354         CYPool pool;
 355         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 356         fwrite(string.data, string.size, 1, file);
 357     }
 358
 359     fflush(file);
 360     return CYJSUndefined(context);
 361 } CYCatch(NULL) }
 362
 363 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 364
 365 _visible void CYGarbageCollect(JSContextRef context) {
 366     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 367 }
 368
 369 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 370     CYPool pool;
 371     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 372     std::stringbuf value(std::string(before.data, before.size));
 373     CYUTF8String after(CYPoolCode(pool, value));
 374     return CYCastJSValue(context, CYJSString(after));
 375 } CYCatch_(NULL, "SyntaxError") }
 376
 377 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 378     CYGarbageCollect(context);
 379     return CYJSUndefined(context);
 380 } CYCatch(NULL) }
 381
 382 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 383     switch (JSType type = JSValueGetType(context, value)) {
 384         case kJSTypeUndefined:
 385             return "undefined";
 386         case kJSTypeNull:
 387             return "null";
 388         case kJSTypeBoolean:
 389             return CYCastBool(context, value) ? "true" : "false";
 390
 391         case kJSTypeNumber: {
 392             std::ostringstream str;
 393             CYNumerify(str, CYCastDouble(context, value));
 394             std::string value(str.str());
 395             return pool.strmemdup(value.c_str(), value.size());
 396         } break;
 397
 398         case kJSTypeString: {
 399             std::ostringstream str;
 400             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 401             CYStringify(str, string.data, string.size);
 402             std::string value(str.str());
 403             return pool.strmemdup(value.c_str(), value.size());
 404         } break;
 405
 406         case kJSTypeObject:
 407             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 408         default:
 409             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 410     }
 411 } CYCatch(NULL) }
 412
 413 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 414     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 415 }
 416
 417 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 418     if (objects != NULL)
 419         return CYPoolCCYON(pool, context, value, *objects);
 420     else {
 421         std::set<void *> objects;
 422         return CYPoolCCYON(pool, context, value, objects);
 423     }
 424 }
 425
 426 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 427     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 428     if (CYIsCallable(context, toCYON)) {
 429         // XXX: this needs to be abstracted behind some kind of function
 430         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 431         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 432         _assert(value != NULL);
 433         return CYPoolCString(pool, context, value);
 434     }
 435
 436     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 437     if (CYIsCallable(context, toJSON)) {
 438         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 439         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 440     }
 441
 442     if (JSObjectIsFunction(context, object)) {
 443         JSValueRef toString(CYGetProperty(context, object, toString_s));
 444         if (CYIsCallable(context, toString)) {
 445             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 446             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 447             _assert(value != NULL);
 448             return CYPoolCString(pool, context, value);
 449         }
 450     }
 451
 452     _assert(objects.insert(object).second);
 453
 454     std::ostringstream str;
 455
 456     str << '{';
 457
 458     // XXX: this is, sadly, going to leak
 459     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 460
 461     bool comma(false);
 462
 463     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 464         if (comma)
 465             str << ',';
 466         else
 467             comma = true;
 468
 469         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 470         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 471
 472         if (CYIsKey(string))
 473             str << string.data;
 474         else
 475             CYStringify(str, string.data, string.size);
 476
 477         str << ':';
 478
 479         try {
 480             JSValueRef value(CYGetProperty(context, object, name));
 481             str << CYPoolCCYON(pool, context, value, objects);
 482         } catch (const CYException &error) {
 483             str << "@error";
 484         }
 485     }
 486
 487     JSPropertyNameArrayRelease(names);
 488
 489     str << '}';
 490
 491     std::string string(str.str());
 492     return pool.strmemdup(string.c_str(), string.size());
 493 }
 494
 495 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 496     if (count == 0)
 497         return NULL;
 498     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 499 }
 500
 501 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 502     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 503     // XXX: this is horribly inefficient
 504     std::set<void *> backup;
 505     if (objects == NULL)
 506         objects = &backup;
 507
 508     CYPool pool;
 509     std::ostringstream str;
 510
 511     str << '[';
 512
 513     JSValueRef length(CYGetProperty(context, _this, length_s));
 514     bool comma(false);
 515
 516     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 517         if (comma)
 518             str << ',';
 519         else
 520             comma = true;
 521
 522         try {
 523             JSValueRef value(CYGetProperty(context, _this, index));
 524             if (!JSValueIsUndefined(context, value))
 525                 str << CYPoolCCYON(pool, context, value, *objects);
 526             else {
 527                 str << ',';
 528                 comma = false;
 529             }
 530         } catch (const CYException &error) {
 531             str << "@error";
 532         }
 533     }
 534
 535     str << ']';
 536
 537     std::string value(str.str());
 538     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 539 } CYCatch(NULL) }
 540
 541 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 542     CYPool pool;
 543     std::ostringstream str;
 544
 545     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 546     CYStringify(str, string.data, string.size);
 547
 548     std::string value(str.str());
 549     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 550 } CYCatch(NULL) }
 551
 552 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 553     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 554     return JSObjectMake(context, Pointer_, internal);
 555 }
 556
 557 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 558     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 559 }
 560
 561 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 562     cy::Functor *internal;
 563     if (*cache != NULL)
 564         internal = reinterpret_cast<cy::Functor *>(*cache);
 565     else {
 566         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 567         if (function == NULL)
 568             return NULL;
 569
 570         internal = new cy::Functor(encoding, function);
 571         *cache = internal;
 572     }
 573
 574     ++internal->count_;
 575     return JSObjectMake(context, Functor_, internal);
 576 }
 577
 578 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 579     return CYGetOffset(CYPoolCString(pool, context, value), index);
 580 }
 581
 582 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 583     if (value == NULL)
 584         return NULL;
 585     else switch (JSValueGetType(context, value)) {
 586         case kJSTypeNull:
 587             return NULL;
 588         case kJSTypeObject: {
 589             JSObjectRef object((JSObjectRef) value);
 590             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 591                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 592                 return internal->value_;
 593             }
 594             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 595             if (CYIsCallable(context, toPointer)) {
 596                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 597                 _assert(value != NULL);
 598                 return CYCastPointer_(context, value);
 599             }
 600         } default:
 601             double number(CYCastDouble(context, value));
 602             if (std::isnan(number))
 603                 throw CYJSError(context, "cannot convert value to pointer");
 604             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 605     }
 606 }
 607
 608 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 609     switch (type->primitive) {
 610         case sig::boolean_P:
 611             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 612         break;
 613
 614 #define CYPoolFFI_(primitive, native) \
 615         case sig::primitive ## _P: \
 616             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 617         break;
 618
 619         CYPoolFFI_(uchar, unsigned char)
 620         CYPoolFFI_(char, char)
 621         CYPoolFFI_(ushort, unsigned short)
 622         CYPoolFFI_(short, short)
 623         CYPoolFFI_(ulong, unsigned long)
 624         CYPoolFFI_(long, long)
 625         CYPoolFFI_(uint, unsigned int)
 626         CYPoolFFI_(int, int)
 627         CYPoolFFI_(ulonglong, unsigned long long)
 628         CYPoolFFI_(longlong, long long)
 629         CYPoolFFI_(float, float)
 630         CYPoolFFI_(double, double)
 631
 632         case sig::array_P: {
 633             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 634             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 635             for (size_t index(0); index != type->data.data.size; ++index) {
 636                 ffi_type *field(ffi->elements[index]);
 637
 638                 JSValueRef rhs;
 639                 if (aggregate == NULL)
 640                     rhs = value;
 641                 else {
 642                     rhs = CYGetProperty(context, aggregate, index);
 643                     if (JSValueIsUndefined(context, rhs))
 644                         throw CYJSError(context, "unable to extract array value");
 645                 }
 646
 647                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 648                 // XXX: alignment?
 649                 base += field->size;
 650             }
 651         } break;
 652
 653         case sig::pointer_P:
 654             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 655         break;
 656
 657         case sig::string_P:
 658             _assert(pool != NULL);
 659             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 660         break;
 661
 662         case sig::struct_P: {
 663             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 664             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 665             for (size_t index(0); index != type->data.signature.count; ++index) {
 666                 sig::Element *element(&type->data.signature.elements[index]);
 667                 ffi_type *field(ffi->elements[index]);
 668
 669                 JSValueRef rhs;
 670                 if (aggregate == NULL)
 671                     rhs = value;
 672                 else {
 673                     rhs = CYGetProperty(context, aggregate, index);
 674                     if (JSValueIsUndefined(context, rhs)) {
 675                         if (element->name != NULL)
 676                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 677                         else
 678                             goto undefined;
 679                         if (JSValueIsUndefined(context, rhs)) undefined:
 680                             throw CYJSError(context, "unable to extract structure value");
 681                     }
 682                 }
 683
 684                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 685                 // XXX: alignment?
 686                 base += field->size;
 687             }
 688         } break;
 689
 690         case sig::void_P:
 691         break;
 692
 693         default:
 694             for (CYHook *hook : GetHooks())
 695                 if (hook->PoolFFI != NULL)
 696                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 697                         return;
 698
 699             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 700     }
 701 }
 702
 703 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 704     switch (type->primitive) {
 705         case sig::boolean_P:
 706             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 707
 708 #define CYFromFFI_(primitive, native) \
 709         case sig::primitive ## _P: \
 710             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 711
 712         CYFromFFI_(uchar, unsigned char)
 713         CYFromFFI_(char, char)
 714         CYFromFFI_(ushort, unsigned short)
 715         CYFromFFI_(short, short)
 716         CYFromFFI_(ulong, unsigned long)
 717         CYFromFFI_(long, long)
 718         CYFromFFI_(uint, unsigned int)
 719         CYFromFFI_(int, int)
 720         CYFromFFI_(ulonglong, unsigned long long)
 721         CYFromFFI_(longlong, long long)
 722         CYFromFFI_(float, float)
 723         CYFromFFI_(double, double)
 724
 725         case sig::array_P:
 726             if (void *pointer = data)
 727                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 728             else goto null;
 729
 730         case sig::pointer_P:
 731             if (void *pointer = *reinterpret_cast<void **>(data))
 732                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 733             else goto null;
 734
 735         case sig::string_P:
 736             if (char *utf8 = *reinterpret_cast<char **>(data))
 737                 return CYCastJSValue(context, utf8);
 738             else goto null;
 739
 740         case sig::struct_P:
 741             return CYMakeStruct(context, data, type, ffi, owner);
 742         case sig::void_P:
 743             return CYJSUndefined(context);
 744
 745         null:
 746             return CYJSNull(context);
 747         default:
 748             for (CYHook *hook : GetHooks())
 749                 if (hook->FromFFI != NULL)
 750                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 751                         return value;
 752
 753             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 754     }
 755 }
 756
 757 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 758     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 759
 760     JSContextRef context(internal->context_);
 761
 762     size_t count(internal->cif_.nargs);
 763     JSValueRef values[count];
 764
 765     for (size_t index(0); index != count; ++index)
 766         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 767
 768     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 769     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 770 }
 771
 772 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 773     return CYCallAsFunction(context, function, NULL, count, values);
 774 }
 775
 776 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 777     // XXX: in case of exceptions this will leak
 778     // XXX: in point of fact, this may /need/ to leak :(
 779     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 780
 781 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 782     void *executable;
 783     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 784
 785     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 786     _assert(status == FFI_OK);
 787
 788     internal->value_ = executable;
 789 #else
 790     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 791         NULL, sizeof(ffi_closure),
 792         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 793         -1, 0
 794     )));
 795
 796     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 797     _assert(status == FFI_OK);
 798
 799     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 800
 801     internal->value_ = closure;
 802 #endif
 803
 804     return internal;
 805 }
 806
 807 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 808     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 809     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 810     // XXX: see above notes about needing to leak
 811     JSValueProtect(CYGetJSContext(context), object);
 812     return object;
 813 }
 814
 815 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 816     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 817 }
 818
 819 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 820     return CYCastJSObject(context, CYGetCachedValue(context, name));
 821 }
 822
 823 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 824     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 825
 826     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 827     if (function) {
 828         JSObjectRef function(CYCastJSObject(context, value));
 829         return CYMakeFunctor(context, function, signature);
 830     } else {
 831         void (*function)()(CYCastPointer<void (*)()>(context, value));
 832         return CYMakeFunctor(context, function, signature);
 833     }
 834 }
 835
 836 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 837     Type_privateData *typical(internal->type_);
 838     sig::Type *type(typical->type_);
 839     if (type == NULL)
 840         return false;
 841
 842     const char *name(CYPoolCString(pool, context, property));
 843     size_t length(strlen(name));
 844     double number(CYCastDouble(name, length));
 845
 846     size_t count(type->data.signature.count);
 847
 848     if (std::isnan(number)) {
 849         if (property == NULL)
 850             return false;
 851
 852         sig::Element *elements(type->data.signature.elements);
 853
 854         for (size_t local(0); local != count; ++local) {
 855             sig::Element *element(&elements[local]);
 856             if (element->name != NULL && strcmp(name, element->name) == 0) {
 857                 index = local;
 858                 goto base;
 859             }
 860         }
 861
 862         return false;
 863     } else {
 864         index = static_cast<ssize_t>(number);
 865         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 866             return false;
 867     }
 868
 869   base:
 870     ffi_type **elements(typical->GetFFI()->elements);
 871
 872     base = reinterpret_cast<uint8_t *>(internal->value_);
 873     for (ssize_t local(0); local != index; ++local)
 874         base += elements[local]->size;
 875
 876     return true;
 877 }
 878
 879 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 880     CYPool pool;
 881     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 882
 883     if (JSStringIsEqual(property, length_s))
 884         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 885
 886     Type_privateData *typical(internal->type_);
 887     if (typical->type_ == NULL)
 888         return NULL;
 889     sig::Type &type(*typical->type_);
 890
 891     ssize_t offset;
 892     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 893         offset = 0;
 894     else if (!CYGetOffset(pool, context, property, offset))
 895         return NULL;
 896
 897     if (type.primitive == sig::function_P)
 898         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 899
 900     ffi_type *ffi(typical->GetFFI());
 901
 902     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 903     base += ffi->size * offset;
 904
 905     JSObjectRef owner(internal->GetOwner() ?: object);
 906     return CYFromFFI(context, &type, ffi, base, false, owner);
 907 } CYCatch(NULL) }
 908
 909 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 910     CYPool pool;
 911     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 912     Type_privateData *typical(internal->type_);
 913
 914     if (typical->type_ == NULL)
 915         return false;
 916
 917     ssize_t offset;
 918     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 919         offset = 0;
 920     else if (!CYGetOffset(pool, context, property, offset))
 921         return false;
 922
 923     ffi_type *ffi(typical->GetFFI());
 924
 925     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 926     base += ffi->size * offset;
 927
 928     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 929     return true;
 930 } CYCatch(false) }
 931
 932 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 933     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 934     Type_privateData *typical(internal->type_);
 935     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 936 } CYCatch(NULL) }
 937
 938 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 939     CYPool pool;
 940     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 941     Type_privateData *typical(internal->type_);
 942
 943     ssize_t index;
 944     uint8_t *base;
 945
 946     if (!Index_(pool, context, internal, property, index, base))
 947         return NULL;
 948
 949     JSObjectRef owner(internal->GetOwner() ?: object);
 950
 951     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 952 } CYCatch(NULL) }
 953
 954 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 955     CYPool pool;
 956     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 957     Type_privateData *typical(internal->type_);
 958
 959     ssize_t index;
 960     uint8_t *base;
 961
 962     if (!Index_(pool, context, internal, property, index, base))
 963         return false;
 964
 965     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 966     return true;
 967 } CYCatch(false) }
 968
 969 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 970     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 971     Type_privateData *typical(internal->type_);
 972     sig::Type *type(typical->type_);
 973
 974     if (type == NULL)
 975         return;
 976
 977     size_t count(type->data.signature.count);
 978     sig::Element *elements(type->data.signature.elements);
 979
 980     char number[32];
 981
 982     for (size_t index(0); index != count; ++index) {
 983         const char *name;
 984         name = elements[index].name;
 985
 986         if (name == NULL) {
 987             sprintf(number, "%zu", index);
 988             name = number;
 989         }
 990
 991         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 992     }
 993 }
 994
 995 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
 996     ffi_call(cif, function, value, values);
 997 }
 998
 999 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)()) {
1000     if (setups + count != signature->count - 1)
1001         throw CYJSError(context, "incorrect number of arguments to ffi function");
1002
1003     size_t size(setups + count);
1004     void *values[size];
1005     memcpy(values, setup, sizeof(void *) * setups);
1006
1007     for (size_t index(setups); index != size; ++index) {
1008         sig::Element *element(&signature->elements[index + 1]);
1009         ffi_type *ffi(cif->arg_types[index]);
1010         // XXX: alignment?
1011         values[index] = new(pool) uint8_t[ffi->size];
1012         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
1013     }
1014
1015     uint8_t value[cif->rtype->size];
1016
1017     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1018     // XXX: this only supports one hook, but it is a bad idea anyway
1019     for (CYHook *hook : GetHooks())
1020         if (hook->CallFunction != NULL)
1021             call = hook->CallFunction;
1022
1023     call(pool, context, cif, function, value, values);
1024     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1025 }
1026
1027 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1028     CYPool pool;
1029     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1030     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1031 } CYCatch(NULL) }
1032
1033 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
1034     Type_privateData *internal(new Type_privateData(encoding));
1035     return JSObjectMake(context, Type_privateData::Class_, internal);
1036 }
1037
1038 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1039     Type_privateData *internal(new Type_privateData(type));
1040     return JSObjectMake(context, Type_privateData::Class_, internal);
1041 }
1042
1043 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1044     CYPool pool;
1045
1046     sig::Type type;
1047     type.name = NULL;
1048     type.flags = 0;
1049
1050     type.primitive = sig::function_P;
1051     sig::Copy(pool, type.data.signature, *signature);
1052
1053     return CYMakeType(context, &type);
1054 }
1055
1056 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1057     JSObjectRef global(CYGetGlobalObject(context));
1058     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1059     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1060
1061     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1062         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1063             if (CYHasProperty(context, space, property))
1064                 return true;
1065
1066     CYPool pool;
1067     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1068
1069     size_t length(name.size);
1070     char keyed[length + 2];
1071     memcpy(keyed + 1, name.data, length + 1);
1072
1073     static const char *modes = "0124";
1074     for (size_t i(0); i != 4; ++i) {
1075         keyed[0] = modes[i];
1076         if (CYBridgeHash(keyed, length + 1) != NULL)
1077             return true;
1078     }
1079
1080     return false;
1081 }
1082
1083 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1084     JSObjectRef global(CYGetGlobalObject(context));
1085     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1086     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1087
1088     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1089         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1090             if (JSValueRef value = CYGetProperty(context, space, property))
1091                 if (!JSValueIsUndefined(context, value))
1092                     return value;
1093
1094     CYPool pool;
1095     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1096
1097     size_t length(name.size);
1098     char keyed[length + 2];
1099     memcpy(keyed + 1, name.data, length + 1);
1100
1101     static const char *modes = "0124";
1102     for (size_t i(0); i != 4; ++i) {
1103         char mode(modes[i]);
1104         keyed[0] = mode;
1105
1106         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1107             switch (mode) {
1108                 case '0':
1109                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1110
1111                 case '1':
1112                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1113
1114                 case '2':
1115                     if (void *symbol = CYCastSymbol(name.data)) {
1116                         // XXX: this is horrendously inefficient
1117                         sig::Signature signature;
1118                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1119                         ffi_cif cif;
1120                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1121                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1122                     } else return NULL;
1123
1124                 // XXX: implement case 3
1125                 case '4':
1126                     return CYMakeType(context, entry->value_);
1127             }
1128     }
1129
1130     return NULL;
1131 } CYCatch(NULL) }
1132
1133 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1134     JSObjectRef global(CYGetGlobalObject(context));
1135     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1136     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1137
1138     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1139         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1140             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1141             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1142                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1143             JSPropertyNameArrayRelease(subset);
1144         }
1145 }
1146
1147 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1148     if (count != 2)
1149         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1150
1151     CYPool pool;
1152
1153     void *value(CYCastPointer<void *>(context, arguments[0]));
1154     const char *type(CYPoolCString(pool, context, arguments[1]));
1155
1156     sig::Signature signature;
1157     sig::Parse(pool, &signature, type, &Structor_);
1158
1159     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1160 } CYCatch(NULL) }
1161
1162 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1163     CYPool pool;
1164
1165     if (false) {
1166     } else if (count == 1) {
1167         const char *type(CYPoolCString(pool, context, arguments[0]));
1168         return CYMakeType(context, type);
1169     } else if (count == 2) {
1170         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1171         size_t count(CYArrayLength(context, types));
1172
1173         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1174
1175         sig::Type type;
1176         type.name = NULL;
1177         type.flags = 0;
1178
1179         type.primitive = sig::struct_P;
1180         type.data.signature.elements = new(pool) sig::Element[count];
1181         type.data.signature.count = count;
1182
1183         for (size_t i(0); i != count; ++i) {
1184             sig::Element &element(type.data.signature.elements[i]);
1185             element.offset = _not(size_t);
1186
1187             JSValueRef name(CYArrayGet(context, names, i));
1188             if (JSValueIsUndefined(context, name))
1189                 element.name = NULL;
1190             else
1191                 element.name = CYPoolCString(pool, context, name);
1192
1193             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1194             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1195             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1196             element.type = internal->type_;
1197         }
1198
1199         return CYMakeType(context, &type);
1200     } else {
1201         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1202     }
1203 } CYCatch(NULL) }
1204
1205 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1206     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1207
1208     CYPool pool;
1209
1210     sig::Type type;
1211     type.name = NULL;
1212     type.flags = 0;
1213
1214     type.primitive = primitive;
1215     type.data.signature.elements = new(pool) sig::Element[1 + count];
1216     type.data.signature.count = 1 + count;
1217
1218     type.data.signature.elements[0].name = NULL;
1219     type.data.signature.elements[0].type = internal->type_;
1220     type.data.signature.elements[0].offset = _not(size_t);
1221
1222     for (size_t i(0); i != count; ++i) {
1223         sig::Element &element(type.data.signature.elements[i + 1]);
1224         element.name = NULL;
1225         element.offset = _not(size_t);
1226
1227         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1228         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1229         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1230
1231         element.type = internal->type_;
1232     }
1233
1234     return CYMakeType(context, &type);
1235 } CYCatch(NULL) }
1236
1237 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1238     if (count != 1)
1239         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1240     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1241
1242     CYPool pool;
1243     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1244     if (index == _not(size_t))
1245         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1246
1247     sig::Type type;
1248     type.name = NULL;
1249     type.flags = 0;
1250
1251     type.primitive = sig::array_P;
1252     type.data.data.type = internal->type_;
1253     type.data.data.size = index;
1254
1255     return CYMakeType(context, &type);
1256 } CYCatch(NULL) }
1257
1258 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1259     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1260 }
1261
1262 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1263     if (count != 0)
1264         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1265     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1266
1267     sig::Type type(*internal->type_);
1268     type.flags |= JOC_TYPE_CONST;
1269     return CYMakeType(context, &type);
1270 } CYCatch(NULL) }
1271
1272 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1273     if (count != 0)
1274         throw CYJSError(context, "incorrect number of arguments to Type.long");
1275     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1276
1277     sig::Type type(*internal->type_);
1278
1279     switch (type.primitive) {
1280         case sig::short_P: type.primitive = sig::int_P; break;
1281         case sig::int_P: type.primitive = sig::long_P; break;
1282         case sig::long_P: type.primitive = sig::longlong_P; break;
1283         default: throw CYJSError(context, "invalid type argument to Type.long");
1284     }
1285
1286     return CYMakeType(context, &type);
1287 } CYCatch(NULL) }
1288
1289 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1290     if (count != 0)
1291         throw CYJSError(context, "incorrect number of arguments to Type.short");
1292     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1293
1294     sig::Type type(*internal->type_);
1295
1296     switch (type.primitive) {
1297         case sig::int_P: type.primitive = sig::short_P; break;
1298         case sig::long_P: type.primitive = sig::int_P; break;
1299         case sig::longlong_P: type.primitive = sig::long_P; break;
1300         default: throw CYJSError(context, "invalid type argument to Type.short");
1301     }
1302
1303     return CYMakeType(context, &type);
1304 } CYCatch(NULL) }
1305
1306 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1307     if (count != 0)
1308         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1309     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1310
1311     sig::Type type(*internal->type_);
1312
1313     switch (type.primitive) {
1314         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1315         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1316         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1317         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1318         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1319         default: throw CYJSError(context, "invalid type argument to Type.signed");
1320     }
1321
1322     return CYMakeType(context, &type);
1323 } CYCatch(NULL) }
1324
1325 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1326     if (count != 0)
1327         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1328     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1329
1330     sig::Type type(*internal->type_);
1331
1332     switch (type.primitive) {
1333         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1334         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1335         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1336         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1337         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1338         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1339     }
1340
1341     return CYMakeType(context, &type);
1342 } CYCatch(NULL) }
1343
1344 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1345     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1346 }
1347
1348 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1349     if (count != 0)
1350         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1351     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1352
1353     sig::Type type;
1354     type.name = NULL;
1355
1356     if (internal->type_->primitive == sig::char_P) {
1357         type.flags = internal->type_->flags;
1358         type.primitive = sig::string_P;
1359         type.data.data.type = NULL;
1360         type.data.data.size = 0;
1361     } else {
1362         type.flags = 0;
1363         type.primitive = sig::pointer_P;
1364         type.data.data.type = internal->type_;
1365         type.data.data.size = 0;
1366     }
1367
1368     return CYMakeType(context, &type);
1369 } CYCatch(NULL) }
1370
1371 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1372     if (count != 1)
1373         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1374     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1375
1376     CYPool pool;
1377     const char *name(CYPoolCString(pool, context, arguments[0]));
1378
1379     sig::Type type(*internal->type_);
1380     type.name = name;
1381     return CYMakeType(context, &type);
1382 } CYCatch(NULL) }
1383
1384 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1385     if (count != 1)
1386         throw CYJSError(context, "incorrect number of arguments to type cast function");
1387     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1388
1389     if (internal->type_->primitive == sig::function_P)
1390         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1391
1392     sig::Type *type(internal->type_);
1393     ffi_type *ffi(internal->GetFFI());
1394     // XXX: alignment?
1395     uint8_t value[ffi->size];
1396     CYPool pool;
1397     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1398     return CYFromFFI(context, type, ffi, value);
1399 } CYCatch(NULL) }
1400
1401 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1402     if (count != 0)
1403         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1404     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1405
1406     sig::Type *type(internal->type_);
1407     size_t length;
1408
1409     if (type->primitive != sig::array_P)
1410         length = _not(size_t);
1411     else {
1412         length = type->data.data.size;
1413         type = type->data.data.type;
1414     }
1415
1416     void *value(calloc(1, internal->GetFFI()->size));
1417     return CYMakePointer(context, value, length, type, NULL, NULL);
1418 } CYCatch(NULL) }
1419
1420 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1421     if (count != 2)
1422         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1423     CYPool pool;
1424     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1425     sig::Signature signature;
1426     sig::Parse(pool, &signature, encoding, &Structor_);
1427     return CYMakeFunctor(context, arguments[0], signature);
1428 } CYCatch(NULL) }
1429
1430 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1431     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1432     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1433 } CYCatch(NULL) }
1434
1435 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1436     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1437 }
1438
1439 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1440     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1441     char string[32];
1442     sprintf(string, "%p", internal->value_);
1443     return CYCastJSValue(context, string);
1444 } CYCatch(NULL) }
1445
1446 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1447     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1448
1449     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1450     if (internal->length_ != _not(size_t)) {
1451         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1452         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1453         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1454     } else if (internal->type_->type_ == NULL) pointer: {
1455         char string[32];
1456         sprintf(string, "%p", internal->value_);
1457         return CYCastJSValue(context, string);
1458     } try {
1459         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1460         if (JSValueIsUndefined(context, value))
1461             goto pointer;
1462         CYPool pool;
1463         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1464     } catch (const CYException &e) {
1465         goto pointer;
1466     }
1467 } CYCatch(NULL) }
1468
1469 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1470     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1471     return CYMakeType(context, internal->type_->type_);
1472 } CYCatch(NULL) }
1473
1474 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1475     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1476     return CYMakeType(context, &internal->signature_);
1477 } CYCatch(NULL) }
1478
1479 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1480     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1481     return CYCastJSValue(context, internal->GetFFI()->alignment);
1482 } CYCatch(NULL) }
1483
1484 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1485     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1486     return CYCastJSValue(context, internal->type_->name);
1487 } CYCatch(NULL) }
1488
1489 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1490     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1491     return CYCastJSValue(context, internal->GetFFI()->size);
1492 } CYCatch(NULL) }
1493
1494 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1495     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1496     CYPool pool;
1497     const char *type(sig::Unparse(pool, internal->type_));
1498     return CYCastJSValue(context, CYJSString(type));
1499 } CYCatch(NULL) }
1500
1501 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1502     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1503     CYLocalPool pool;
1504     std::stringbuf out;
1505     CYOptions options;
1506     CYOutput output(out, options);
1507     (new(pool) CYTypeExpression(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1508     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1509 } CYCatch(NULL) }
1510
1511 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1512     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1513 }
1514
1515 static JSStaticFunction Pointer_staticFunctions[4] = {
1516     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1517     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1518     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1519     {NULL, NULL, 0}
1520 };
1521
1522 static JSStaticValue Pointer_staticValues[2] = {
1523     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1524     {NULL, NULL, NULL, 0}
1525 };
1526
1527 static JSStaticFunction Struct_staticFunctions[2] = {
1528     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1529     {NULL, NULL, 0}
1530 };
1531
1532 static JSStaticFunction Functor_staticFunctions[4] = {
1533     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1534     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1535     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1536     {NULL, NULL, 0}
1537 };
1538
1539 namespace cy {
1540     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1541 }
1542
1543 static JSStaticValue Functor_staticValues[2] = {
1544     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1545     {NULL, NULL, NULL, 0}
1546 };
1547
1548 namespace cy {
1549     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1550 }
1551
1552 static JSStaticValue Type_staticValues[4] = {
1553     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1554     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1555     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1556     {NULL, NULL, NULL, 0}
1557 };
1558
1559 static JSStaticFunction Type_staticFunctions[14] = {
1560     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1561     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1562     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1563     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1564     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1565     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1566     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1567     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1568     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1569     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1570     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1571     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1572     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1573     {NULL, NULL, 0}
1574 };
1575
1576 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1577
1578 _visible void CYSetArgs(int argc, const char *argv[]) {
1579     JSContextRef context(CYGetJSContext());
1580     JSValueRef args[argc];
1581     for (int i(0); i != argc; ++i)
1582         args[i] = CYCastJSValue(context, argv[i]);
1583
1584     JSObjectRef array;
1585     if (JSObjectMakeArray$ != NULL)
1586         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1587     else {
1588         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1589         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1590         array = CYCastJSObject(context, value);
1591     }
1592
1593     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1594     CYSetProperty(context, System, CYJSString("args"), array);
1595 }
1596
1597 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1598     return JSContextGetGlobalObject(context);
1599 }
1600
1601 // XXX: this is neither exceptin safe nor even terribly sane
1602 class ExecutionHandle {
1603   private:
1604     JSContextRef context_;
1605     std::vector<void *> handles_;
1606
1607   public:
1608     ExecutionHandle(JSContextRef context) :
1609         context_(context)
1610     {
1611         handles_.resize(GetHooks().size());
1612         for (size_t i(0); i != GetHooks().size(); ++i) {
1613             CYHook *hook(GetHooks()[i]);
1614             if (hook->ExecuteStart != NULL)
1615                 handles_[i] = (*hook->ExecuteStart)(context_);
1616             else
1617                 handles_[i] = NULL;
1618         }
1619     }
1620
1621     ~ExecutionHandle() {
1622         for (size_t i(GetHooks().size()); i != 0; --i) {
1623             CYHook *hook(GetHooks()[i-1]);
1624             if (hook->ExecuteEnd != NULL)
1625                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1626         }
1627     }
1628 };
1629
1630 static volatile bool cancel_;
1631
1632 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1633     return cancel_;
1634 }
1635
1636 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1637     ExecutionHandle handle(context);
1638
1639     cancel_ = false;
1640     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1641         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1642
1643     try {
1644         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1645         if (JSValueIsUndefined(context, result))
1646             return NULL;
1647
1648         std::set<void *> objects;
1649         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1650         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1651
1652         return json;
1653     } catch (const CYException &error) {
1654         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1655     }
1656 }
1657
1658 _visible void CYCancel() {
1659     cancel_ = true;
1660 }
1661
1662 static bool initialized_ = false;
1663
1664 void CYInitializeDynamic() {
1665     if (!initialized_)
1666         initialized_ = true;
1667     else return;
1668
1669     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1670     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1671
1672     JSClassDefinition definition;
1673
1674     definition = kJSClassDefinitionEmpty;
1675     definition.className = "All";
1676     definition.hasProperty = &All_hasProperty;
1677     definition.getProperty = &All_getProperty;
1678     definition.getPropertyNames = &All_getPropertyNames;
1679     All_ = JSClassCreate(&definition);
1680
1681     definition = kJSClassDefinitionEmpty;
1682     definition.className = "Context";
1683     definition.finalize = &CYFinalize;
1684     Context_ = JSClassCreate(&definition);
1685
1686     definition = kJSClassDefinitionEmpty;
1687     definition.className = "Functor";
1688     definition.staticFunctions = cy::Functor::StaticFunctions;
1689     definition.staticValues = Functor_staticValues;
1690     definition.callAsFunction = &Functor_callAsFunction;
1691     definition.finalize = &CYFinalize;
1692     Functor_ = JSClassCreate(&definition);
1693
1694     definition = kJSClassDefinitionEmpty;
1695     definition.className = "Pointer";
1696     definition.staticFunctions = Pointer_staticFunctions;
1697     definition.staticValues = Pointer_staticValues;
1698     definition.getProperty = &Pointer_getProperty;
1699     definition.setProperty = &Pointer_setProperty;
1700     definition.finalize = &CYFinalize;
1701     Pointer_ = JSClassCreate(&definition);
1702
1703     definition = kJSClassDefinitionEmpty;
1704     definition.className = "Struct";
1705     definition.staticFunctions = Struct_staticFunctions;
1706     definition.getProperty = &Struct_getProperty;
1707     definition.setProperty = &Struct_setProperty;
1708     definition.getPropertyNames = &Struct_getPropertyNames;
1709     definition.finalize = &CYFinalize;
1710     Struct_ = JSClassCreate(&definition);
1711
1712     definition = kJSClassDefinitionEmpty;
1713     definition.className = "Type";
1714     definition.staticValues = Type_staticValues;
1715     definition.staticFunctions = Type_staticFunctions;
1716     definition.callAsFunction = &Type_callAsFunction;
1717     definition.callAsConstructor = &Type_callAsConstructor;
1718     definition.finalize = &CYFinalize;
1719     Type_privateData::Class_ = JSClassCreate(&definition);
1720
1721     definition = kJSClassDefinitionEmpty;
1722     definition.className = "Global";
1723     //definition.getProperty = &Global_getProperty;
1724     Global_ = JSClassCreate(&definition);
1725
1726     Array_s = JSStringCreateWithUTF8CString("Array");
1727     cy_s = JSStringCreateWithUTF8CString("$cy");
1728     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1729     length_s = JSStringCreateWithUTF8CString("length");
1730     message_s = JSStringCreateWithUTF8CString("message");
1731     name_s = JSStringCreateWithUTF8CString("name");
1732     pop_s = JSStringCreateWithUTF8CString("pop");
1733     prototype_s = JSStringCreateWithUTF8CString("prototype");
1734     push_s = JSStringCreateWithUTF8CString("push");
1735     splice_s = JSStringCreateWithUTF8CString("splice");
1736     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1737     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1738     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1739     toString_s = JSStringCreateWithUTF8CString("toString");
1740     weak_s = JSStringCreateWithUTF8CString("weak");
1741
1742     Result_ = JSStringCreateWithUTF8CString("_");
1743
1744     for (CYHook *hook : GetHooks())
1745         if (hook->Initialize != NULL)
1746             (*hook->Initialize)();
1747 }
1748
1749 void CYThrow(JSContextRef context, JSValueRef value) {
1750     if (value != NULL)
1751         throw CYJSError(context, value);
1752 }
1753
1754 const char *CYJSError::PoolCString(CYPool &pool) const {
1755     std::set<void *> objects;
1756     // XXX: this used to be CYPoolCString
1757     return CYPoolCCYON(pool, context_, value_, objects);
1758 }
1759
1760 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
1761     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
1762     return value_;
1763 }
1764
1765 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
1766     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
1767     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1768     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1769 }
1770
1771 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
1772     return CYCastJSError(context, name, message_);
1773 }
1774
1775 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1776     _assert(context != NULL);
1777
1778     CYPool pool;
1779
1780     va_list args;
1781     va_start(args, format);
1782     // XXX: there might be a beter way to think about this
1783     const char *message(pool.vsprintf(64, format, args));
1784     va_end(args);
1785
1786     value_ = CYCastJSError(context, "Error", message);
1787 }
1788
1789 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1790     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1791 }
1792
1793 struct CYFile {
1794     void *data_;
1795     size_t size_;
1796
1797     CYFile(void *data, size_t size) :
1798         data_(data),
1799         size_(size)
1800     {
1801     }
1802 };
1803
1804 static void CYFileExit(void *data) {
1805     CYFile *file(reinterpret_cast<CYFile *>(data));
1806     _syscall(munmap(file->data_, file->size_));
1807 }
1808
1809 static void *CYPoolFile(CYPool &pool, const char *path, size_t *psize) {
1810     int fd(_syscall_(open(path, O_RDONLY), 1, ENOENT));
1811     if (fd == -1)
1812         return NULL;
1813
1814     struct stat stat;
1815     _syscall(fstat(fd, &stat));
1816     size_t size(stat.st_size);
1817
1818     *psize = size;
1819
1820     void *base;
1821     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1822
1823     CYFile *file(new (pool) CYFile(base, size));
1824     pool.atexit(&CYFileExit, file);
1825
1826     _syscall(close(fd));
1827     return base;
1828 }
1829
1830 static CYUTF8String CYPoolFileUTF8String(CYPool &pool, const char *path) {
1831     CYUTF8String data;
1832     data.data = reinterpret_cast<char *>(CYPoolFile(pool, path, &data.size));
1833     return data;
1834 }
1835
1836 static const char *CYPoolLibraryPath(CYPool &pool) {
1837     Dl_info addr;
1838     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
1839     char *lib(pool.strdup(addr.dli_fname));
1840
1841     char *slash(strrchr(lib, '/'));
1842     _assert(slash != NULL);
1843     *slash = '\0';
1844
1845     return lib;
1846 }
1847
1848 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1849     _assert(count == 1);
1850     CYPool pool;
1851
1852     const char *lib(CYPoolLibraryPath(pool));
1853
1854     CYJSString property("exports");
1855     JSObjectRef module;
1856
1857     const char *name(CYPoolCString(pool, context, arguments[0]));
1858     const char *path(pool.strcat(lib, "/cycript0.9/", name, ".cy", NULL));
1859
1860     CYJSString key(path);
1861     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1862     JSValueRef cache(CYGetProperty(context, modules, key));
1863
1864     if (!JSValueIsUndefined(context, cache))
1865         module = CYCastJSObject(context, cache);
1866     else {
1867         CYUTF8String code(CYPoolFileUTF8String(pool, path));
1868
1869         if (code.data == NULL) {
1870             if (strchr(name, '/') == NULL && (
1871 #ifdef __APPLE__
1872                 dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1873                 dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1874 #endif
1875             false))
1876                 return CYJSUndefined(NULL);
1877
1878             CYThrow("Can't find module: %s", name);
1879         }
1880
1881         module = JSObjectMake(context, NULL, NULL);
1882         CYSetProperty(context, modules, key, module);
1883
1884         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1885         CYSetProperty(context, module, property, exports);
1886
1887         std::stringstream wrap;
1888         wrap << "(function (exports, require, module) { " << code << "\n});";
1889         code = CYPoolCode(pool, *wrap.rdbuf());
1890
1891         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1892         JSObjectRef function(CYCastJSObject(context, value));
1893
1894         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1895         CYCallAsFunction(context, function, NULL, 3, arguments);
1896     }
1897
1898     return CYGetProperty(context, module, property);
1899 } CYCatch(NULL) }
1900
1901 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
1902     CYPool pool;
1903     CYUTF8String code(CYPoolFileUTF8String(pool, path));
1904     if (code.data == NULL)
1905         return false;
1906
1907     CYStream stream(code.data, code.data + code.size);
1908     code = CYPoolCode(pool, stream);
1909     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
1910     return true;
1911 }
1912
1913 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
1914 }
1915
1916 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1917     CYInitializeDynamic();
1918
1919     JSObjectRef global(CYGetGlobalObject(context));
1920
1921     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1922     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1923
1924 /* Cache Globals {{{ */
1925     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1926     CYSetProperty(context, cy, CYJSString("Array"), Array);
1927
1928     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1929     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1930
1931     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
1932     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
1933
1934     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
1935     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
1936
1937     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1938     CYSetProperty(context, cy, CYJSString("Error"), Error);
1939
1940     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1941     CYSetProperty(context, cy, CYJSString("Function"), Function);
1942
1943     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1944     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1945
1946     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
1947     CYSetProperty(context, cy, CYJSString("Number"), Number);
1948
1949     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
1950     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
1951
1952     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1953     CYSetProperty(context, cy, CYJSString("Object"), Object);
1954
1955     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1956     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1957
1958     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1959     CYSetProperty(context, cy, CYJSString("String"), String);
1960
1961     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1962     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1963
1964     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
1965     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
1966 /* }}} */
1967
1968     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1969     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1970
1971     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1972     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1973     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
1974     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1975
1976     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1977     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1978     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1979
1980     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1981     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1982
1983     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1984     CYSetProperty(context, cy, CYJSString("modules"), modules);
1985
1986     JSObjectRef all(JSObjectMake(context, All_, NULL));
1987     CYSetProperty(context, cycript, CYJSString("all"), all);
1988
1989     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1990     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1991
1992     if (true) {
1993         JSObjectRef last(NULL), curr(global);
1994
1995         goto next; for (JSValueRef next;;) {
1996             if (JSValueIsNull(context, next))
1997                 break;
1998             last = curr;
1999             curr = CYCastJSObject(context, next);
2000           next:
2001             next = JSObjectGetPrototype(context, curr);
2002         }
2003
2004         CYSetPrototype(context, last, all);
2005     }
2006
2007     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2008     CYSetProperty(context, cy, CYJSString("System"), System);
2009
2010     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
2011
2012     CYSetProperty(context, global, CYJSString("system"), System);
2013     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2014     //CYSetProperty(context, System, CYJSString("global"), global);
2015     CYSetProperty(context, System, CYJSString("print"), &System_print);
2016
2017 #ifdef __APPLE__
2018     if (&JSWeakObjectMapCreate != NULL) {
2019         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2020         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2021     }
2022 #endif
2023
2024     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
2025         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
2026
2027     CYRunScript(context, "libcycript.cy");
2028
2029     for (CYHook *hook : GetHooks())
2030         if (hook->SetupContext != NULL)
2031             (*hook->SetupContext)(context);
2032
2033     CYArrayPush(context, alls, cycript);
2034 }
2035
2036 static JSGlobalContextRef context_;
2037
2038 _visible JSGlobalContextRef CYGetJSContext() {
2039     CYInitializeDynamic();
2040
2041     if (context_ == NULL) {
2042         context_ = JSGlobalContextCreate(Global_);
2043         CYSetupContext(context_);
2044     }
2045
2046     return context_;
2047 }
2048
2049 _visible void CYDestroyContext() {
2050     if (context_ == NULL)
2051         return;
2052     JSGlobalContextRelease(context_);
2053     context_ = NULL;
2054 }