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 <sqlite3.h>
  40
  41 #include "sig/parse.hpp"
  42 #include "sig/ffi_type.hpp"
  43
  44 #include "Code.hpp"
  45 #include "Decode.hpp"
  46 #include "Error.hpp"
  47 #include "Execute.hpp"
  48 #include "Internal.hpp"
  49 #include "JavaScript.hpp"
  50 #include "Pooling.hpp"
  51 #include "String.hpp"
  52
  53 const char *sqlite3_column_string(sqlite3_stmt *stmt, int n) {
  54     return reinterpret_cast<const char *>(sqlite3_column_text(stmt, n));
  55 }
  56
  57 char *sqlite3_column_pooled(CYPool &pool, sqlite3_stmt *stmt, int n) {
  58     if (const char *value = sqlite3_column_string(stmt, n))
  59         return pool.strdup(value);
  60     else return NULL;
  61 }
  62
  63 static std::vector<CYHook *> &GetHooks() {
  64     static std::vector<CYHook *> hooks;
  65     return hooks;
  66 }
  67
  68 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  69     GetHooks().push_back(hook);
  70 }
  71
  72 /* JavaScript Properties {{{ */
  73 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  74     return JSObjectHasProperty(context, object, name);
  75 }
  76
  77 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  78     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  79 }
  80
  81 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  82     return _jsccall(JSObjectGetProperty, context, object, name);
  83 }
  84
  85 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  86     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  87 }
  88
  89 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  90     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  91 }
  92
  93 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  94     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  95 }
  96
  97 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  98     JSObjectSetPrototype(context, object, value);
  99     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
 100 }
 101 /* }}} */
 102 /* JavaScript Strings {{{ */
 103 JSStringRef CYCopyJSString(const char *value) {
 104     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 105 }
 106
 107 JSStringRef CYCopyJSString(JSStringRef value) {
 108     return value == NULL ? NULL : JSStringRetain(value);
 109 }
 110
 111 JSStringRef CYCopyJSString(CYUTF8String value) {
 112     if (memchr(value.data, '\0', value.size) != NULL) {
 113         CYPool pool;
 114         return CYCopyJSString(CYPoolUTF16String(pool, value));
 115     } else if (value.data[value.size] != '\0') {
 116         CYPool pool;
 117         return CYCopyJSString(pool.strmemdup(value.data, value.size));
 118     } else {
 119         return CYCopyJSString(value.data);
 120     }
 121 }
 122
 123 JSStringRef CYCopyJSString(CYUTF16String value) {
 124     return JSStringCreateWithCharacters(value.data, value.size);
 125 }
 126
 127 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 128     if (JSValueIsNull(context, value))
 129         return NULL;
 130     return _jsccall(JSValueToStringCopy, context, value);
 131 }
 132
 133 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 134     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 135 }
 136
 137 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 138     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 139 }
 140
 141 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 142     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 143     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 144     return utf8.data;
 145 }
 146
 147 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 148     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 149 }
 150 /* }}} */
 151 /* Index Offsets {{{ */
 152 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 153     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 154 }
 155 /* }}} */
 156
 157 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 158
 159 static JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 160     if (JSObjectMakeArray$ != NULL)
 161         return _jsccall(*JSObjectMakeArray$, context, length, values);
 162     else {
 163         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 164         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 165         return CYCastJSObject(context, value);
 166     }
 167 }
 168
 169 static JSClassRef All_;
 170 static JSClassRef Context_;
 171 static JSClassRef CArray_;
 172 static JSClassRef CString_;
 173 JSClassRef Functor_;
 174 static JSClassRef Global_;
 175 static JSClassRef Pointer_;
 176 static JSClassRef Struct_;
 177
 178 JSStringRef Array_s;
 179 JSStringRef cy_s;
 180 JSStringRef cyi_s;
 181 JSStringRef length_s;
 182 JSStringRef message_s;
 183 JSStringRef name_s;
 184 JSStringRef pop_s;
 185 JSStringRef prototype_s;
 186 JSStringRef push_s;
 187 JSStringRef splice_s;
 188 JSStringRef toCYON_s;
 189 JSStringRef toJSON_s;
 190 JSStringRef toPointer_s;
 191 JSStringRef toString_s;
 192 JSStringRef weak_s;
 193
 194 static sqlite3 *database_;
 195
 196 static JSStringRef Result_;
 197
 198 void CYFinalize(JSObjectRef object) {
 199     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 200     _assert(internal->count_ != _not(unsigned));
 201     if (--internal->count_ == 0)
 202         delete internal;
 203 }
 204
 205 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 206     //_assert(false);
 207     return aggregate;
 208 }
 209
 210 JSClassRef Type_privateData::Class_;
 211
 212 struct Context :
 213     CYData
 214 {
 215     JSGlobalContextRef context_;
 216
 217     Context(JSGlobalContextRef context) :
 218         context_(context)
 219     {
 220     }
 221 };
 222
 223 struct CArray :
 224     CYOwned
 225 {
 226     Type_privateData *type_;
 227     size_t length_;
 228
 229     CArray(void *value, JSContextRef context, JSObjectRef owner, size_t length, const sig::Type &type, ffi_type *ffi) :
 230         CYOwned(value, context, owner),
 231         type_(new(*pool_) Type_privateData(type, ffi)),
 232         length_(length)
 233     {
 234     }
 235 };
 236
 237 struct CString :
 238     CYOwned
 239 {
 240     CString(char *value, JSContextRef context, JSObjectRef owner) :
 241         CYOwned(value, context, owner)
 242     {
 243     }
 244 };
 245
 246 struct Pointer :
 247     CYOwned
 248 {
 249     Type_privateData *type_;
 250
 251     Pointer(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type) :
 252         CYOwned(value, context, owner),
 253         type_(new(*pool_) Type_privateData(type))
 254     {
 255     }
 256
 257     Pointer(void *value, JSContextRef context, JSObjectRef owner, const char *encoding) :
 258         CYOwned(value, context, owner),
 259         type_(new(*pool_) Type_privateData(encoding))
 260     {
 261     }
 262 };
 263
 264 struct Struct_privateData :
 265     CYOwned
 266 {
 267     Type_privateData *type_;
 268
 269     Struct_privateData(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type, ffi_type *ffi) :
 270         CYOwned(value, context, owner),
 271         type_(new(*pool_) Type_privateData(type, ffi))
 272     {
 273     }
 274 };
 275
 276 JSObjectRef CYMakeCArray(JSContextRef context, void *data, size_t length, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 277     CArray *internal(new CArray(data, context, owner, length, type, ffi));
 278
 279     if (owner == NULL) {
 280         size_t size(ffi->size * length);
 281         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 282         memcpy(copy, internal->value_, size);
 283         internal->value_ = copy;
 284     }
 285
 286     return JSObjectMake(context, CArray_, internal);
 287 }
 288
 289 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 290     CString *internal(new CString(pointer, context, owner));
 291     if (owner == NULL)
 292         internal->value_ = internal->pool_->strdup(static_cast<const char *>(internal->value_));
 293     return JSObjectMake(context, CString_, internal);
 294 }
 295
 296 JSObjectRef CYMakeStruct(JSContextRef context, void *data, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 297     Struct_privateData *internal(new Struct_privateData(data, context, owner, type, ffi));
 298
 299     if (owner == NULL) {
 300         size_t size(ffi->size);
 301         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 302         memcpy(copy, internal->value_, size);
 303         internal->value_ = copy;
 304     }
 305
 306     return JSObjectMake(context, Struct_, internal);
 307 }
 308
 309 static void *CYCastSymbol(const char *name) {
 310     for (CYHook *hook : GetHooks())
 311         if (hook->CastSymbol != NULL)
 312             if (void *value = (*hook->CastSymbol)(name))
 313                 return value;
 314     return dlsym(RTLD_DEFAULT, name);
 315 }
 316
 317 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 318     return JSValueMakeBoolean(context, value);
 319 }
 320
 321 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 322     return JSValueMakeNumber(context, value);
 323 }
 324
 325 #define CYCastJSValue_(Type_) \
 326     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 327         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 328         return JSValueMakeNumber(context, static_cast<double>(value)); \
 329     }
 330
 331 CYCastJSValue_(int)
 332 CYCastJSValue_(unsigned int)
 333 CYCastJSValue_(long int)
 334 CYCastJSValue_(long unsigned int)
 335 CYCastJSValue_(long long int)
 336 CYCastJSValue_(long long unsigned int)
 337
 338 JSValueRef CYJSUndefined(JSContextRef context) {
 339     return JSValueMakeUndefined(context);
 340 }
 341
 342 double CYCastDouble(JSContextRef context, JSValueRef value) {
 343     return _jsccall(JSValueToNumber, context, value);
 344 }
 345
 346 bool CYCastBool(JSContextRef context, JSValueRef value) {
 347     return JSValueToBoolean(context, value);
 348 }
 349
 350 JSValueRef CYJSNull(JSContextRef context) {
 351     return JSValueMakeNull(context);
 352 }
 353
 354 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 355     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 356 }
 357
 358 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 359     return CYCastJSValue(context, CYJSString(value));
 360 }
 361
 362 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 363     return _jsccall(JSValueToObject, context, value);
 364 }
 365
 366 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 367     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 368 }
 369
 370 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 371     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 372 }
 373
 374 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 375     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 376 }
 377
 378 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 379     return JSValueIsStrictEqual(context, lhs, rhs);
 380 }
 381
 382 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 383     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 384 }
 385
 386 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 387     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 388 }
 389
 390 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 391     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 392     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 393 }
 394
 395 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 396     return CYArrayPush(context, array, 1, &value);
 397 }
 398
 399 template <size_t Size_>
 400 class CYArrayBuilder {
 401   private:
 402     JSContextRef context_;
 403     JSObjectRef &array_;
 404     size_t size_;
 405     JSValueRef values_[Size_];
 406
 407     void flush() {
 408         if (array_ == NULL)
 409             array_ = CYObjectMakeArray(context_, size_, values_);
 410         else
 411             CYArrayPush(context_, array_, size_, values_);
 412     }
 413
 414   public:
 415     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 416         context_(context),
 417         array_(array),
 418         size_(0)
 419     {
 420     }
 421
 422     ~CYArrayBuilder() {
 423         flush();
 424     }
 425
 426     void operator ()(JSValueRef value) {
 427         if (size_ == Size_) {
 428             flush();
 429             size_ = 0;
 430         }
 431
 432         values_[size_++] = value;
 433     }
 434 };
 435
 436 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 437     FILE *file(stdout);
 438
 439     if (count == 0)
 440         fputc('\n', file);
 441     else {
 442         CYPool pool;
 443         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 444         fwrite(string.data, string.size, 1, file);
 445     }
 446
 447     fflush(file);
 448     return CYJSUndefined(context);
 449 } CYCatch(NULL) }
 450
 451 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 452
 453 _visible void CYGarbageCollect(JSContextRef context) {
 454     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 455 }
 456
 457 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 458     CYPool pool;
 459     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 460     std::stringbuf value(std::string(before.data, before.size));
 461     CYUTF8String after(CYPoolCode(pool, value));
 462     return CYCastJSValue(context, CYJSString(after));
 463 } CYCatch_(NULL, "SyntaxError") }
 464
 465 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 466     CYGarbageCollect(context);
 467     return CYJSUndefined(context);
 468 } CYCatch(NULL) }
 469
 470 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 471     switch (JSType type = JSValueGetType(context, value)) {
 472         case kJSTypeUndefined:
 473             return "undefined";
 474         case kJSTypeNull:
 475             return "null";
 476         case kJSTypeBoolean:
 477             return CYCastBool(context, value) ? "true" : "false";
 478
 479         case kJSTypeNumber: {
 480             std::ostringstream str;
 481             CYNumerify(str, CYCastDouble(context, value));
 482             std::string value(str.str());
 483             return pool.strmemdup(value.c_str(), value.size());
 484         } break;
 485
 486         case kJSTypeString: {
 487             std::ostringstream str;
 488             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 489             CYStringify(str, string.data, string.size);
 490             std::string value(str.str());
 491             return pool.strmemdup(value.c_str(), value.size());
 492         } break;
 493
 494         case kJSTypeObject:
 495             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 496         default:
 497             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 498     }
 499 } CYCatch(NULL) }
 500
 501 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 502     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 503 }
 504
 505 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 506     if (objects != NULL)
 507         return CYPoolCCYON(pool, context, value, *objects);
 508     else {
 509         std::set<void *> objects;
 510         return CYPoolCCYON(pool, context, value, objects);
 511     }
 512 }
 513
 514 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 515     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 516     if (CYIsCallable(context, toCYON)) {
 517         // XXX: this needs to be abstracted behind some kind of function
 518         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 519         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 520         _assert(value != NULL);
 521         return CYPoolCString(pool, context, value);
 522     }
 523
 524     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 525     if (CYIsCallable(context, toJSON)) {
 526         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 527         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 528     }
 529
 530     if (JSObjectIsFunction(context, object)) {
 531         JSValueRef toString(CYGetProperty(context, object, toString_s));
 532         if (CYIsCallable(context, toString)) {
 533             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 534             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 535             _assert(value != NULL);
 536             return CYPoolCString(pool, context, value);
 537         }
 538     }
 539
 540     _assert(objects.insert(object).second);
 541
 542     std::ostringstream str;
 543
 544     str << '{';
 545
 546     // XXX: this is, sadly, going to leak
 547     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 548
 549     bool comma(false);
 550
 551     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 552         if (comma)
 553             str << ',';
 554         else
 555             comma = true;
 556
 557         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 558         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 559
 560         if (CYIsKey(string))
 561             str << string.data;
 562         else
 563             CYStringify(str, string.data, string.size);
 564
 565         str << ':';
 566
 567         try {
 568             JSValueRef value(CYGetProperty(context, object, name));
 569             str << CYPoolCCYON(pool, context, value, objects);
 570         } catch (const CYException &error) {
 571             str << "@error";
 572         }
 573     }
 574
 575     JSPropertyNameArrayRelease(names);
 576
 577     str << '}';
 578
 579     std::string string(str.str());
 580     return pool.strmemdup(string.c_str(), string.size());
 581 }
 582
 583 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 584     if (count == 0)
 585         return NULL;
 586     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 587 }
 588
 589 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 590     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 591     // XXX: this is horribly inefficient
 592     std::set<void *> backup;
 593     if (objects == NULL)
 594         objects = &backup;
 595
 596     CYPool pool;
 597     std::ostringstream str;
 598
 599     str << '[';
 600
 601     JSValueRef length(CYGetProperty(context, _this, length_s));
 602     bool comma(false);
 603
 604     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 605         if (comma)
 606             str << ',';
 607         else
 608             comma = true;
 609
 610         try {
 611             JSValueRef value(CYGetProperty(context, _this, index));
 612             if (!JSValueIsUndefined(context, value))
 613                 str << CYPoolCCYON(pool, context, value, *objects);
 614             else {
 615                 str << ',';
 616                 comma = false;
 617             }
 618         } catch (const CYException &error) {
 619             str << "@error";
 620         }
 621     }
 622
 623     str << ']';
 624
 625     std::string value(str.str());
 626     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 627 } CYCatch(NULL) }
 628
 629 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 630     CYPool pool;
 631     std::ostringstream str;
 632
 633     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 634     CYStringify(str, string.data, string.size);
 635
 636     std::string value(str.str());
 637     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 638 } CYCatch(NULL) }
 639
 640 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 641     Pointer *internal(new Pointer(pointer, context, owner, type));
 642     return JSObjectMake(context, Pointer_, internal);
 643 }
 644
 645 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const char *encoding, JSObjectRef owner) {
 646     Pointer *internal(new Pointer(pointer, context, owner, encoding));
 647     return JSObjectMake(context, Pointer_, internal);
 648 }
 649
 650 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 651     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 652 }
 653
 654 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 655     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 656     if (function == NULL)
 657         return NULL;
 658
 659     cy::Functor *internal(new cy::Functor(encoding, function));
 660     ++internal->count_;
 661     return JSObjectMake(context, Functor_, internal);
 662 }
 663
 664 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 665     return CYGetOffset(CYPoolCString(pool, context, value), index);
 666 }
 667
 668 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 669     if (value == NULL)
 670         return NULL;
 671     else switch (JSValueGetType(context, value)) {
 672         case kJSTypeNull:
 673             return NULL;
 674         case kJSTypeObject: {
 675             JSObjectRef object((JSObjectRef) value);
 676             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 677                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 678                 return internal->value_;
 679             }
 680             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 681             if (CYIsCallable(context, toPointer)) {
 682                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 683                 _assert(value != NULL);
 684                 return CYCastPointer_(context, value, guess);
 685             }
 686         } default:
 687             if (guess != NULL)
 688                 *guess = true;
 689         case kJSTypeNumber:
 690             double number(CYCastDouble(context, value));
 691             if (!std::isnan(number))
 692                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 693             if (guess == NULL)
 694                 throw CYJSError(context, "cannot convert value to pointer");
 695             else {
 696                 *guess = true;
 697                 return NULL;
 698             }
 699     }
 700 }
 701
 702 namespace sig {
 703
 704 // XXX: this is somehow not quite a template :/
 705
 706 template <>
 707 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 708     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 709 }
 710
 711 #define CYPoolFFI_(Type_) \
 712 template <> \
 713 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 714     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 715 }
 716
 717 CYPoolFFI_(char)
 718 CYPoolFFI_(double)
 719 CYPoolFFI_(float)
 720 CYPoolFFI_(signed char)
 721 CYPoolFFI_(signed int)
 722 CYPoolFFI_(signed long int)
 723 CYPoolFFI_(signed long long int)
 724 CYPoolFFI_(signed short int)
 725 CYPoolFFI_(unsigned char)
 726 CYPoolFFI_(unsigned int)
 727 CYPoolFFI_(unsigned long int)
 728 CYPoolFFI_(unsigned long long int)
 729 CYPoolFFI_(unsigned short int)
 730
 731 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 732     _assert(false);
 733 }
 734
 735 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 736     _assert(false);
 737 }
 738
 739 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 740     bool guess(false);
 741     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 742     if (guess && pool != NULL)
 743         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 744 }
 745
 746 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 747     _assert(false);
 748 }
 749
 750 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 751     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 752 }
 753
 754 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 755     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 756     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 757     for (size_t index(0); index != size; ++index) {
 758         ffi_type *field(ffi->elements[index]);
 759
 760         JSValueRef rhs;
 761         if (aggregate == NULL)
 762             rhs = value;
 763         else {
 764             rhs = CYGetProperty(context, aggregate, index);
 765             if (JSValueIsUndefined(context, rhs))
 766                 throw CYJSError(context, "unable to extract array value");
 767         }
 768
 769         type.PoolFFI(pool, context, field, base, rhs);
 770         base += field->size;
 771     }
 772 }
 773
 774 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 775     _assert(!overlap);
 776
 777     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 778     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 779     for (size_t index(0); index != signature.count; ++index) {
 780         sig::Element *element(&signature.elements[index]);
 781         ffi_type *field(ffi->elements[index]);
 782
 783         JSValueRef rhs;
 784         if (aggregate == NULL)
 785             rhs = value;
 786         else {
 787             rhs = CYGetProperty(context, aggregate, index);
 788             if (JSValueIsUndefined(context, rhs)) {
 789                 if (element->name != NULL)
 790                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 791                 else
 792                     goto undefined;
 793                 if (JSValueIsUndefined(context, rhs)) undefined:
 794                     throw CYJSError(context, "unable to extract structure value");
 795             }
 796         }
 797
 798         element->type->PoolFFI(pool, context, field, base, rhs);
 799         base += field->size;
 800     }
 801 }
 802
 803 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 804     _assert(false);
 805 }
 806
 807 #define CYFromFFI_(Type_) \
 808 template <> \
 809 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 810     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 811 }
 812
 813 CYFromFFI_(bool)
 814 CYFromFFI_(char)
 815 CYFromFFI_(double)
 816 CYFromFFI_(float)
 817 CYFromFFI_(signed char)
 818 CYFromFFI_(signed int)
 819 CYFromFFI_(signed long int)
 820 CYFromFFI_(signed long long int)
 821 CYFromFFI_(signed short int)
 822 CYFromFFI_(unsigned char)
 823 CYFromFFI_(unsigned int)
 824 CYFromFFI_(unsigned long int)
 825 CYFromFFI_(unsigned long long int)
 826 CYFromFFI_(unsigned short int)
 827
 828 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 829     return CYJSUndefined(context);
 830 }
 831
 832 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 833     _assert(false);
 834 }
 835
 836 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 837     if (char *value = *reinterpret_cast<char **>(data))
 838         return CYMakeCString(context, value, owner);
 839     return CYJSNull(context);
 840 }
 841
 842 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 843     _assert(false);
 844 }
 845
 846 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 847     if (void *value = *reinterpret_cast<void **>(data))
 848         return CYMakePointer(context, value, type, NULL, owner);
 849     return CYJSNull(context);
 850 }
 851
 852 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 853     return CYMakeCArray(context, data, size, type, ffi->elements[0], owner);
 854 }
 855
 856 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 857     return CYMakeStruct(context, data, *this, ffi, owner);
 858 }
 859
 860 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 861     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), signature);
 862 }
 863
 864 }
 865
 866 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 867     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 868
 869     JSContextRef context(internal->context_);
 870
 871     size_t count(internal->cif_.nargs);
 872     JSValueRef values[count];
 873
 874     for (size_t index(0); index != count; ++index)
 875         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 876
 877     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 878     if (internal->cif_.rtype != &ffi_type_void)
 879         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 880 }
 881
 882 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 883     return CYCallAsFunction(context, function, NULL, count, values);
 884 }
 885
 886 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 887     // XXX: in case of exceptions this will leak
 888     // XXX: in point of fact, this may /need/ to leak :(
 889     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 890
 891 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 892     void *executable;
 893     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 894
 895     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 896     _assert(status == FFI_OK);
 897
 898     internal->value_ = executable;
 899 #else
 900     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 901         NULL, sizeof(ffi_closure),
 902         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 903         -1, 0
 904     )));
 905
 906     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 907     _assert(status == FFI_OK);
 908
 909     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 910
 911     internal->value_ = closure;
 912 #endif
 913
 914     return internal;
 915 }
 916
 917 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 918     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 919     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 920     // XXX: see above notes about needing to leak
 921     JSValueProtect(CYGetJSContext(context), object);
 922     return object;
 923 }
 924
 925 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 926     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 927 }
 928
 929 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 930     return CYCastJSObject(context, CYGetCachedValue(context, name));
 931 }
 932
 933 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 934     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 935
 936     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 937     if (function) {
 938         JSObjectRef function(CYCastJSObject(context, value));
 939         return CYMakeFunctor(context, function, signature);
 940     } else {
 941         void (*function)()(CYCastPointer<void (*)()>(context, value));
 942         return CYMakeFunctor(context, function, signature);
 943     }
 944 }
 945
 946 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 947     CYPool pool;
 948     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 949     char *string(static_cast<char *>(internal->value_));
 950
 951     ssize_t offset;
 952     if (!CYGetOffset(pool, context, property, offset))
 953         return NULL;
 954
 955     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 956 } CYCatch(NULL) }
 957
 958 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 959     CYPool pool;
 960     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 961     char *string(static_cast<char *>(internal->value_));
 962
 963     ssize_t offset;
 964     if (!CYGetOffset(pool, context, property, offset))
 965         return false;
 966
 967     const char *data(CYPoolCString(pool, context, value));
 968     string[offset] = *data;
 969     return true;
 970 } CYCatch(false) }
 971
 972 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 973     Type_privateData *typical(internal->type_);
 974     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
 975     if (type == NULL)
 976         return false;
 977
 978     const char *name(CYPoolCString(pool, context, property));
 979     size_t length(strlen(name));
 980     double number(CYCastDouble(name, length));
 981
 982     size_t count(type->signature.count);
 983
 984     if (std::isnan(number)) {
 985         if (property == NULL)
 986             return false;
 987
 988         sig::Element *elements(type->signature.elements);
 989
 990         for (size_t local(0); local != count; ++local) {
 991             sig::Element *element(&elements[local]);
 992             if (element->name != NULL && strcmp(name, element->name) == 0) {
 993                 index = local;
 994                 goto base;
 995             }
 996         }
 997
 998         return false;
 999     } else {
1000         index = static_cast<ssize_t>(number);
1001         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1002             return false;
1003     }
1004
1005   base:
1006     ffi_type **elements(typical->GetFFI()->elements);
1007
1008     size_t offset(0);
1009     for (ssize_t local(0); local != index; ++local) {
1010         offset += elements[local]->size;
1011         CYAlign(offset, elements[local + 1]->alignment);
1012     }
1013
1014     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1015     return true;
1016 }
1017
1018 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1019     ssize_t offset;
1020     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1021         offset = 0;
1022     else if (!CYGetOffset(pool, context, property, offset))
1023         return NULL;
1024     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1025 }
1026
1027 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1028     ffi_type *ffi(typical->GetFFI());
1029     void *base(Offset_(pool, context, property, data, ffi));
1030     if (base == NULL)
1031         return NULL;
1032     return typical->type_->FromFFI(context, ffi, base, false, owner);
1033 }
1034
1035 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1036     ffi_type *ffi(typical->GetFFI());
1037     void *base(Offset_(pool, context, property, data, ffi));
1038     if (base == NULL)
1039         return false;
1040
1041     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1042     return true;
1043 }
1044
1045 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1046     CYPool pool;
1047     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1048     if (JSStringIsEqual(property, length_s))
1049         return CYCastJSValue(context, internal->length_);
1050     Type_privateData *typical(internal->type_);
1051     JSObjectRef owner(internal->GetOwner() ?: object);
1052     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1053 } CYCatch(NULL) }
1054
1055 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1056     CYPool pool;
1057     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1058     Type_privateData *typical(internal->type_);
1059     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1060 } CYCatch(false) }
1061
1062 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1063     CYPool pool;
1064     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1065
1066     Type_privateData *typical(internal->type_);
1067
1068     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1069         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1070             return NULL;
1071         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->signature);
1072     }
1073
1074     JSObjectRef owner(internal->GetOwner() ?: object);
1075     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1076 } CYCatch(NULL) }
1077
1078 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1079     CYPool pool;
1080     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1081     Type_privateData *typical(internal->type_);
1082     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1083 } CYCatch(false) }
1084
1085 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1086     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1087     Type_privateData *typical(internal->type_);
1088     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1089 } CYCatch(NULL) }
1090
1091 static JSValueRef Struct_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1092     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1093     return CYMakeType(context, *internal->type_->type_);
1094 } CYCatch(NULL) }
1095
1096 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1097     CYPool pool;
1098     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1099     Type_privateData *typical(internal->type_);
1100     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1101
1102     ssize_t index;
1103     uint8_t *base;
1104
1105     if (!Index_(pool, context, internal, property, index, base))
1106         return NULL;
1107
1108     JSObjectRef owner(internal->GetOwner() ?: object);
1109
1110     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1111 } CYCatch(NULL) }
1112
1113 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1114     CYPool pool;
1115     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1116     Type_privateData *typical(internal->type_);
1117     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1118
1119     ssize_t index;
1120     uint8_t *base;
1121
1122     if (!Index_(pool, context, internal, property, index, base))
1123         return false;
1124
1125     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1126     return true;
1127 } CYCatch(false) }
1128
1129 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1130     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1131     Type_privateData *typical(internal->type_);
1132     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1133
1134     if (type == NULL)
1135         return;
1136
1137     size_t count(type->signature.count);
1138     sig::Element *elements(type->signature.elements);
1139
1140     char number[32];
1141
1142     for (size_t index(0); index != count; ++index) {
1143         const char *name;
1144         name = elements[index].name;
1145
1146         if (name == NULL) {
1147             sprintf(number, "%zu", index);
1148             name = number;
1149         }
1150
1151         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1152     }
1153 }
1154
1155 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1156     ffi_call(cif, function, value, values);
1157 }
1158
1159 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)()) {
1160     if (setups + count != signature->count - 1)
1161         throw CYJSError(context, "incorrect number of arguments to ffi function");
1162
1163     size_t size(setups + count);
1164     void *values[size];
1165     memcpy(values, setup, sizeof(void *) * setups);
1166
1167     for (size_t index(setups); index != size; ++index) {
1168         sig::Element *element(&signature->elements[index + 1]);
1169         ffi_type *ffi(cif->arg_types[index]);
1170         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1171         element->type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1172     }
1173
1174     uint8_t value[cif->rtype->size];
1175
1176     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1177     // XXX: this only supports one hook, but it is a bad idea anyway
1178     for (CYHook *hook : GetHooks())
1179         if (hook->CallFunction != NULL)
1180             call = hook->CallFunction;
1181
1182     call(pool, context, cif, function, value, values);
1183     return signature->elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1184 }
1185
1186 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1187     CYPool pool;
1188     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1189     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1190 } CYCatch(NULL) }
1191
1192 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1193     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1194     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1195         throw CYJSError(context, "cannot call a pointer to non-function");
1196     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1197     return CYCallAsFunction(context, functor, _this, count, arguments);
1198 } CYCatch(NULL) }
1199
1200 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1201     Type_privateData *internal(new Type_privateData(type));
1202     return JSObjectMake(context, Type_privateData::Class_, internal);
1203 }
1204
1205 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1206     CYPool pool;
1207     sig::Function type;
1208     sig::Copy(pool, type.signature, *signature);
1209     return CYMakeType(context, type);
1210 }
1211
1212 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1213     sqlite3_stmt *statement;
1214
1215     _sqlcall(sqlite3_prepare(database_,
1216         "select "
1217             "\"cache\".\"code\", "
1218             "\"cache\".\"flags\" "
1219         "from \"cache\" "
1220         "where"
1221             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1222             " \"cache\".\"name\" = ?"
1223         " limit 1"
1224     , -1, &statement, NULL));
1225
1226     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1227
1228     bool success;
1229     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1230         success = false;
1231     else {
1232         success = true;
1233         code = sqlite3_column_pooled(pool, statement, 0);
1234         flags = sqlite3_column_int(statement, 1);
1235     }
1236
1237     _sqlcall(sqlite3_finalize(statement));
1238     return success;
1239 }
1240
1241 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1242     if (JSStringIsEqualToUTF8CString(property, "errno"))
1243         return true;
1244
1245     JSObjectRef global(CYGetGlobalObject(context));
1246     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1247     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1248
1249     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1250         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1251             if (CYHasProperty(context, space, property))
1252                 return true;
1253
1254     CYPool pool;
1255     const char *code;
1256     unsigned flags;
1257     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1258         return true;
1259
1260     return false;
1261 }
1262
1263 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1264     if (JSStringIsEqualToUTF8CString(property, "errno"))
1265         return CYCastJSValue(context, errno);
1266
1267     JSObjectRef global(CYGetGlobalObject(context));
1268     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1269     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1270
1271     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1272         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1273             if (JSValueRef value = CYGetProperty(context, space, property))
1274                 if (!JSValueIsUndefined(context, value))
1275                     return value;
1276
1277     CYPool pool;
1278     const char *code;
1279     unsigned flags;
1280     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1281         CYUTF8String parsed;
1282
1283         try {
1284             parsed = CYPoolCode(pool, code);
1285         } catch (const CYException &error) {
1286             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1287         }
1288
1289         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1290
1291         if (flags == 0) {
1292             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1293             CYSetProperty(context, cache, property, result);
1294         }
1295
1296         return result;
1297     }
1298
1299     return NULL;
1300 } CYCatch(NULL) }
1301
1302 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1303     _assert(count == 1);
1304     CYPool pool;
1305     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1306
1307     JSObjectRef array(NULL);
1308
1309     {
1310     CYArrayBuilder<1024> values(context, array);
1311
1312     sqlite3_stmt *statement;
1313
1314     if (prefix.size == 0)
1315         _sqlcall(sqlite3_prepare(database_,
1316             "select "
1317                 "\"cache\".\"name\" "
1318             "from \"cache\" "
1319             "where"
1320                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1321         , -1, &statement, NULL));
1322     else {
1323         _sqlcall(sqlite3_prepare(database_,
1324             "select "
1325                 "\"cache\".\"name\" "
1326             "from \"cache\" "
1327             "where"
1328                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1329                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1330         , -1, &statement, NULL));
1331
1332         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1333
1334         char *after(pool.strndup(prefix.data, prefix.size));
1335         ++after[prefix.size - 1];
1336         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1337     }
1338
1339     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1340         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1341
1342     _sqlcall(sqlite3_finalize(statement));
1343     }
1344
1345     return array;
1346 } CYCatch(NULL) }
1347
1348 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1349     JSObjectRef global(CYGetGlobalObject(context));
1350     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1351     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1352
1353     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1354         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1355             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1356             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1357                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1358             JSPropertyNameArrayRelease(subset);
1359         }
1360 }
1361
1362 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1363     _assert(false);
1364 } CYCatch(NULL) }
1365
1366 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1367     _assert(false);
1368 } CYCatch(NULL) }
1369
1370 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1371     _assert(false);
1372 } CYCatch(NULL) }
1373
1374 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1375     CYPool pool;
1376
1377     if (false) {
1378     } else if (count == 1) {
1379         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1380         sig::Signature signature;
1381         sig::Parse(pool, &signature, encoding, &Structor_);
1382         return CYMakeType(context, *signature.elements[0].type);
1383     } else if (count == 2) {
1384         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1385         size_t count(CYArrayLength(context, types));
1386
1387         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1388
1389         sig::Aggregate type(false);
1390         type.signature.elements = new(pool) sig::Element[count];
1391         type.signature.count = count;
1392
1393         for (size_t i(0); i != count; ++i) {
1394             sig::Element &element(type.signature.elements[i]);
1395             element.offset = _not(size_t);
1396
1397             JSValueRef name(CYArrayGet(context, names, i));
1398             if (JSValueIsUndefined(context, name))
1399                 element.name = NULL;
1400             else
1401                 element.name = CYPoolCString(pool, context, name);
1402
1403             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1404             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1405             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1406             element.type = internal->type_;
1407         }
1408
1409         return CYMakeType(context, type);
1410     } else {
1411         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1412     }
1413 } CYCatch(NULL) }
1414
1415 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1416     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1417
1418     CYPool pool;
1419
1420     type.signature.elements = new(pool) sig::Element[1 + count];
1421     type.signature.count = 1 + count;
1422
1423     type.signature.elements[0].name = NULL;
1424     type.signature.elements[0].type = internal->type_;
1425     type.signature.elements[0].offset = _not(size_t);
1426
1427     for (size_t i(0); i != count; ++i) {
1428         sig::Element &element(type.signature.elements[i + 1]);
1429         element.name = NULL;
1430         element.offset = _not(size_t);
1431
1432         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1433         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1434         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1435
1436         element.type = internal->type_;
1437     }
1438
1439     return CYMakeType(context, type);
1440 } CYCatch(NULL) }
1441
1442 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1443     if (count != 1)
1444         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1445     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1446
1447     CYPool pool;
1448     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1449     if (index == _not(size_t))
1450         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1451
1452     sig::Array type(*internal->type_, index);
1453     return CYMakeType(context, type);
1454 } CYCatch(NULL) }
1455
1456 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1457     sig::Block type;
1458     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1459 }
1460
1461 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1462     if (count != 0)
1463         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1464     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1465
1466     CYPool pool;
1467     sig::Type *type(internal->type_->Copy(pool));
1468     type->flags |= JOC_TYPE_CONST;
1469     return CYMakeType(context, *type);
1470 } CYCatch(NULL) }
1471
1472 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1473     sig::Function type;
1474     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1475 }
1476
1477 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1478     if (count != 0)
1479         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1480     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1481
1482     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1483         return CYMakeType(context, sig::String());
1484     else
1485         return CYMakeType(context, sig::Pointer(*internal->type_));
1486 } CYCatch(NULL) }
1487
1488 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1489     if (count != 1)
1490         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1491     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1492
1493     CYPool pool;
1494     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1495 } CYCatch(NULL) }
1496
1497 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1498     if (count != 1)
1499         throw CYJSError(context, "incorrect number of arguments to type cast function");
1500     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1501
1502     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1503         return CYMakeFunctor(context, arguments[0], function->signature);
1504
1505     CYPool pool;
1506     sig::Type *type(internal->type_);
1507     ffi_type *ffi(internal->GetFFI());
1508     void *value(pool.malloc<void>(ffi->size, ffi->alignment));
1509     type->PoolFFI(&pool, context, ffi, value, arguments[0]);
1510     return type->FromFFI(context, ffi, value);
1511 } CYCatch(NULL) }
1512
1513 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1514     if (count != 0)
1515         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1516     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1517
1518     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1519     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1520     ffi_type *ffi(internal->GetFFI());
1521     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1522     memset(value->value_, 0, ffi->size);
1523     return pointer;
1524 } CYCatch(NULL) }
1525
1526 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1527     if (count != 2)
1528         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1529     CYPool pool;
1530     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1531     sig::Signature signature;
1532     sig::Parse(pool, &signature, encoding, &Structor_);
1533     return CYMakeFunctor(context, arguments[0], signature);
1534 } CYCatch(NULL) }
1535
1536 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1537     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1538     JSObjectRef owner(internal->GetOwner() ?: object);
1539     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1540 } CYCatch(NULL) }
1541
1542 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1543     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1544     JSObjectRef owner(internal->GetOwner() ?: object);
1545     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1546 } CYCatch(NULL) }
1547
1548 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1549     CYPool pool;
1550     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1551
1552     sig::Function type;
1553     sig::Copy(pool, type.signature, internal->signature_);
1554
1555     return CYMakePointer(context, internal->value_, type, NULL, NULL);
1556 } CYCatch(NULL) }
1557
1558 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1559     return _this;
1560 } CYCatch(NULL) }
1561
1562 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1563     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1564     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1565 } CYCatch(NULL) }
1566
1567 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1568     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1569 }
1570
1571 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1572     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1573     std::ostringstream str;
1574     Dl_info info;
1575     if (internal->value_ == NULL)
1576         str << "NULL";
1577     else if (dladdr(internal->value_, &info) == 0)
1578         str << internal->value_;
1579     else {
1580         str << info.dli_sname;
1581         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1582         if (offset != 0)
1583             str << "+0x" << std::hex << offset;
1584     }
1585     std::string value(str.str());
1586     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1587 } CYCatch(NULL) }
1588
1589 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1590     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1591
1592     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1593
1594     try {
1595         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1596         if (!JSValueIsUndefined(context, value)) {
1597             CYPool pool;
1598             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1599         }
1600     } catch (const CYException &e) {
1601         // XXX: it might be interesting to include this error
1602     }
1603
1604     CYLocalPool pool;
1605     std::ostringstream str;
1606
1607     sig::Pointer type(*internal->type_->type_);
1608
1609     CYOptions options;
1610     CYOutput output(*str.rdbuf(), options);
1611     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1612
1613     str << "(" << internal->value_ << ")";
1614     std::string value(str.str());
1615     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1616 } CYCatch(NULL) }
1617
1618 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1619     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1620     char *string(static_cast<char *>(internal->value_));
1621     return CYCastJSValue(context, strlen(string));
1622 } CYCatch(NULL) }
1623
1624 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1625     return CYMakeType(context, sig::String());
1626 } CYCatch(NULL) }
1627
1628 static JSValueRef CArray_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1629     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1630     sig::Array type(*internal->type_->type_, internal->length_);
1631     return CYMakeType(context, type);
1632 } CYCatch(NULL) }
1633
1634 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1635     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1636     sig::Pointer type(*internal->type_->type_);
1637     return CYMakeType(context, type);
1638 } CYCatch(NULL) }
1639
1640 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1641     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1642     const char *string(static_cast<const char *>(internal->value_));
1643     std::ostringstream str;
1644     if (string == NULL)
1645         str << "NULL";
1646     else {
1647         str << "&";
1648         CYStringify(str, string, strlen(string), true);
1649     }
1650     std::string value(str.str());
1651     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1652 } CYCatch(NULL) }
1653
1654 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1655     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1656     const char *string(static_cast<const char *>(internal->value_));
1657     return CYCastJSValue(context, string);
1658 } CYCatch(NULL) }
1659
1660 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1661     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1662     return CYMakeType(context, &internal->signature_);
1663 } CYCatch(NULL) }
1664
1665 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1666     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1667     return CYCastJSValue(context, internal->GetFFI()->alignment);
1668 } CYCatch(NULL) }
1669
1670 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1671     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1672     return CYCastJSValue(context, internal->type_->GetName());
1673 } CYCatch(NULL) }
1674
1675 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1676     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1677     return CYCastJSValue(context, internal->GetFFI()->size);
1678 } CYCatch(NULL) }
1679
1680 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1681     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1682     CYPool pool;
1683     const char *type(sig::Unparse(pool, internal->type_));
1684     return CYCastJSValue(context, CYJSString(type));
1685 } CYCatch(NULL) }
1686
1687 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1688     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1689     CYLocalPool pool;
1690     std::stringbuf out;
1691     CYOptions options;
1692     CYOutput output(out, options);
1693     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_)))->Output(output, CYNoFlags);
1694     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1695 } CYCatch(NULL) }
1696
1697 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1698     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1699 }
1700
1701 static JSStaticFunction All_staticFunctions[2] = {
1702     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1703     {NULL, NULL, 0}
1704 };
1705
1706 static JSStaticFunction CArray_staticFunctions[4] = {
1707     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1708     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1709     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1710     {NULL, NULL, 0}
1711 };
1712
1713 static JSStaticValue CArray_staticValues[2] = {
1714     {"type", &CArray_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1715     {NULL, NULL, NULL, 0}
1716 };
1717
1718 static JSStaticFunction CString_staticFunctions[6] = {
1719     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1720     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1721     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1722     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1723     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1724     {NULL, NULL, 0}
1725 };
1726
1727 static JSStaticValue CString_staticValues[3] = {
1728     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1729     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1730     {NULL, NULL, NULL, 0}
1731 };
1732
1733 static JSStaticFunction Pointer_staticFunctions[5] = {
1734     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1735     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1736     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1737     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1738     {NULL, NULL, 0}
1739 };
1740
1741 static JSStaticValue Pointer_staticValues[2] = {
1742     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1743     {NULL, NULL, NULL, 0}
1744 };
1745
1746 static JSStaticFunction Struct_staticFunctions[2] = {
1747     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1748     {NULL, NULL, 0}
1749 };
1750
1751 static JSStaticValue Struct_staticValues[2] = {
1752     {"type", &Struct_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1753     {NULL, NULL, NULL, 0}
1754 };
1755
1756 static JSStaticFunction Functor_staticFunctions[5] = {
1757     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1758     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1759     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1760     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1761     {NULL, NULL, 0}
1762 };
1763
1764 namespace cy {
1765     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1766 }
1767
1768 static JSStaticValue Functor_staticValues[2] = {
1769     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1770     {NULL, NULL, NULL, 0}
1771 };
1772
1773 namespace cy {
1774     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1775 }
1776
1777 static JSStaticValue Type_staticValues[4] = {
1778     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1779     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1780     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1781     {NULL, NULL, NULL, 0}
1782 };
1783
1784 static JSStaticFunction Type_staticFunctions[10] = {
1785     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1786     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1787     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1788     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1789     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1790     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1791     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1792     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1793     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1794     {NULL, NULL, 0}
1795 };
1796
1797 _visible void CYSetArgs(int argc, const char *argv[]) {
1798     JSContextRef context(CYGetJSContext());
1799     JSValueRef args[argc];
1800     for (int i(0); i != argc; ++i)
1801         args[i] = CYCastJSValue(context, argv[i]);
1802
1803     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1804     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1805     CYSetProperty(context, System, CYJSString("args"), array);
1806 }
1807
1808 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1809     return JSContextGetGlobalObject(context);
1810 }
1811
1812 // XXX: this is neither exceptin safe nor even terribly sane
1813 class ExecutionHandle {
1814   private:
1815     JSContextRef context_;
1816     std::vector<void *> handles_;
1817
1818   public:
1819     ExecutionHandle(JSContextRef context) :
1820         context_(context)
1821     {
1822         handles_.resize(GetHooks().size());
1823         for (size_t i(0); i != GetHooks().size(); ++i) {
1824             CYHook *hook(GetHooks()[i]);
1825             if (hook->ExecuteStart != NULL)
1826                 handles_[i] = (*hook->ExecuteStart)(context_);
1827             else
1828                 handles_[i] = NULL;
1829         }
1830     }
1831
1832     ~ExecutionHandle() {
1833         for (size_t i(GetHooks().size()); i != 0; --i) {
1834             CYHook *hook(GetHooks()[i-1]);
1835             if (hook->ExecuteEnd != NULL)
1836                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1837         }
1838     }
1839 };
1840
1841 static volatile bool cancel_;
1842
1843 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1844     return cancel_;
1845 }
1846
1847 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1848     ExecutionHandle handle(context);
1849
1850     cancel_ = false;
1851     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1852         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1853
1854     try {
1855         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1856         if (JSValueIsUndefined(context, result))
1857             return NULL;
1858
1859         std::set<void *> objects;
1860         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1861         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1862
1863         return json;
1864     } catch (const CYException &error) {
1865         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1866     }
1867 }
1868
1869 _visible void CYCancel() {
1870     cancel_ = true;
1871 }
1872
1873 static const char *CYPoolLibraryPath(CYPool &pool);
1874
1875 static bool initialized_ = false;
1876
1877 void CYInitializeDynamic() {
1878     if (!initialized_)
1879         initialized_ = true;
1880     else return;
1881
1882     CYPool pool;
1883     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1884     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1885
1886     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1887     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1888
1889     JSClassDefinition definition;
1890
1891     definition = kJSClassDefinitionEmpty;
1892     definition.className = "All";
1893     definition.staticFunctions = All_staticFunctions;
1894     definition.hasProperty = &All_hasProperty;
1895     definition.getProperty = &All_getProperty;
1896     definition.getPropertyNames = &All_getPropertyNames;
1897     All_ = JSClassCreate(&definition);
1898
1899     definition = kJSClassDefinitionEmpty;
1900     definition.className = "Context";
1901     definition.finalize = &CYFinalize;
1902     Context_ = JSClassCreate(&definition);
1903
1904     definition = kJSClassDefinitionEmpty;
1905     definition.className = "CArray";
1906     definition.staticFunctions = CArray_staticFunctions;
1907     definition.staticValues = CArray_staticValues;
1908     definition.getProperty = &CArray_getProperty;
1909     definition.setProperty = &CArray_setProperty;
1910     definition.finalize = &CYFinalize;
1911     CArray_ = JSClassCreate(&definition);
1912
1913     definition = kJSClassDefinitionEmpty;
1914     definition.className = "CString";
1915     definition.staticFunctions = CString_staticFunctions;
1916     definition.staticValues = CString_staticValues;
1917     definition.getProperty = &CString_getProperty;
1918     definition.setProperty = &CString_setProperty;
1919     definition.finalize = &CYFinalize;
1920     CString_ = JSClassCreate(&definition);
1921
1922     definition = kJSClassDefinitionEmpty;
1923     definition.className = "Functor";
1924     definition.staticFunctions = cy::Functor::StaticFunctions;
1925     definition.staticValues = Functor_staticValues;
1926     definition.callAsFunction = &Functor_callAsFunction;
1927     definition.finalize = &CYFinalize;
1928     Functor_ = JSClassCreate(&definition);
1929
1930     definition = kJSClassDefinitionEmpty;
1931     definition.className = "Pointer";
1932     definition.staticFunctions = Pointer_staticFunctions;
1933     definition.staticValues = Pointer_staticValues;
1934     definition.callAsFunction = &Pointer_callAsFunction;
1935     definition.getProperty = &Pointer_getProperty;
1936     definition.setProperty = &Pointer_setProperty;
1937     definition.finalize = &CYFinalize;
1938     Pointer_ = JSClassCreate(&definition);
1939
1940     definition = kJSClassDefinitionEmpty;
1941     definition.className = "Struct";
1942     definition.staticFunctions = Struct_staticFunctions;
1943     definition.staticValues = Struct_staticValues;
1944     definition.getProperty = &Struct_getProperty;
1945     definition.setProperty = &Struct_setProperty;
1946     definition.getPropertyNames = &Struct_getPropertyNames;
1947     definition.finalize = &CYFinalize;
1948     Struct_ = JSClassCreate(&definition);
1949
1950     definition = kJSClassDefinitionEmpty;
1951     definition.className = "Type";
1952     definition.staticValues = Type_staticValues;
1953     definition.staticFunctions = Type_staticFunctions;
1954     definition.callAsFunction = &Type_callAsFunction;
1955     definition.callAsConstructor = &Type_callAsConstructor;
1956     definition.finalize = &CYFinalize;
1957     Type_privateData::Class_ = JSClassCreate(&definition);
1958
1959     definition = kJSClassDefinitionEmpty;
1960     definition.className = "Global";
1961     //definition.getProperty = &Global_getProperty;
1962     Global_ = JSClassCreate(&definition);
1963
1964     Array_s = JSStringCreateWithUTF8CString("Array");
1965     cy_s = JSStringCreateWithUTF8CString("$cy");
1966     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1967     length_s = JSStringCreateWithUTF8CString("length");
1968     message_s = JSStringCreateWithUTF8CString("message");
1969     name_s = JSStringCreateWithUTF8CString("name");
1970     pop_s = JSStringCreateWithUTF8CString("pop");
1971     prototype_s = JSStringCreateWithUTF8CString("prototype");
1972     push_s = JSStringCreateWithUTF8CString("push");
1973     splice_s = JSStringCreateWithUTF8CString("splice");
1974     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1975     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1976     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1977     toString_s = JSStringCreateWithUTF8CString("toString");
1978     weak_s = JSStringCreateWithUTF8CString("weak");
1979
1980     Result_ = JSStringCreateWithUTF8CString("_");
1981
1982     for (CYHook *hook : GetHooks())
1983         if (hook->Initialize != NULL)
1984             (*hook->Initialize)();
1985 }
1986
1987 void CYThrow(JSContextRef context, JSValueRef value) {
1988     if (value != NULL)
1989         throw CYJSError(context, value);
1990 }
1991
1992 const char *CYJSError::PoolCString(CYPool &pool) const {
1993     std::set<void *> objects;
1994     // XXX: this used to be CYPoolCString
1995     return CYPoolCCYON(pool, context_, value_, objects);
1996 }
1997
1998 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
1999     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2000     return value_;
2001 }
2002
2003 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2004     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2005     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2006     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2007 }
2008
2009 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2010     return CYCastJSError(context, name, message_);
2011 }
2012
2013 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2014     _assert(context != NULL);
2015
2016     CYPool pool;
2017
2018     va_list args;
2019     va_start(args, format);
2020     // XXX: there might be a beter way to think about this
2021     const char *message(pool.vsprintf(64, format, args));
2022     va_end(args);
2023
2024     value_ = CYCastJSError(context, "Error", message);
2025 }
2026
2027 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2028     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2029 }
2030
2031 static const char *CYPoolLibraryPath(CYPool &pool) {
2032     Dl_info addr;
2033     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2034     char *lib(pool.strdup(addr.dli_fname));
2035
2036     char *slash(strrchr(lib, '/'));
2037     _assert(slash != NULL);
2038     *slash = '\0';
2039
2040     slash = strrchr(lib, '/');
2041     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2042         *slash = '\0';
2043
2044     return lib;
2045 }
2046
2047 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2048     _assert(count == 1);
2049     CYPool pool;
2050
2051     const char *name(CYPoolCString(pool, context, arguments[0]));
2052     if (strchr(name, '/') == NULL && (
2053 #ifdef __APPLE__
2054         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2055         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2056 #endif
2057     false))
2058         return CYJSUndefined(context);
2059
2060     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2061     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2062
2063     CYJSString property("exports");
2064
2065     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2066     JSValueRef cache(CYGetProperty(context, modules, path));
2067
2068     JSValueRef result;
2069     if (!JSValueIsUndefined(context, cache)) {
2070         JSObjectRef module(CYCastJSObject(context, cache));
2071         result = CYGetProperty(context, module, property);
2072     } else {
2073         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2074         _assert(code.data != NULL);
2075
2076         size_t length(strlen(name));
2077         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2078             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2079             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2080             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2081             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2082         } else {
2083             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2084             CYSetProperty(context, modules, path, module);
2085
2086             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2087             CYSetProperty(context, module, property, exports);
2088
2089             std::stringstream wrap;
2090             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2091             code = CYPoolCode(pool, *wrap.rdbuf());
2092
2093             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2094             JSObjectRef function(CYCastJSObject(context, value));
2095
2096             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2097             CYCallAsFunction(context, function, NULL, 4, arguments);
2098             result = CYGetProperty(context, module, property);
2099         }
2100     }
2101
2102     return result;
2103 } CYCatch(NULL) }
2104
2105 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2106     CYPool pool;
2107     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2108     if (code.data == NULL)
2109         return false;
2110
2111     code = CYPoolCode(pool, code);
2112     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2113     return true;
2114 }
2115
2116 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2117 }
2118
2119 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2120     CYInitializeDynamic();
2121
2122     JSObjectRef global(CYGetGlobalObject(context));
2123
2124     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2125     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2126
2127 /* Cache Globals {{{ */
2128     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2129     CYSetProperty(context, cy, CYJSString("Array"), Array);
2130
2131     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2132     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2133
2134     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2135     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2136
2137     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2138     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2139
2140     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2141     CYSetProperty(context, cy, CYJSString("Error"), Error);
2142
2143     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2144     CYSetProperty(context, cy, CYJSString("Function"), Function);
2145
2146     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2147     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2148
2149     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2150     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2151
2152     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2153     CYSetProperty(context, cy, CYJSString("Number"), Number);
2154
2155     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2156     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2157
2158     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2159     CYSetProperty(context, cy, CYJSString("Object"), Object);
2160
2161     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2162     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2163
2164     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2165     CYSetProperty(context, cy, CYJSString("String"), String);
2166
2167     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2168     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2169
2170     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2171     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2172 /* }}} */
2173
2174     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2175     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2176
2177     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2178     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2179     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2180     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2181
2182     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray_, &CArray_new));
2183     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2184     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2185
2186     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2187     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2188     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2189
2190     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2191     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2192     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2193
2194     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2195     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2196
2197     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2198     CYSetProperty(context, cy, CYJSString("modules"), modules);
2199
2200     JSObjectRef all(JSObjectMake(context, All_, NULL));
2201     CYSetProperty(context, cycript, CYJSString("all"), all);
2202
2203     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2204     CYSetProperty(context, cy, CYJSString("cache"), cache);
2205     CYSetPrototype(context, cache, all);
2206
2207     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2208     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2209
2210     if (true) {
2211         JSObjectRef last(NULL), curr(global);
2212
2213         goto next; for (JSValueRef next;;) {
2214             if (JSValueIsNull(context, next))
2215                 break;
2216             last = curr;
2217             curr = CYCastJSObject(context, next);
2218           next:
2219             next = JSObjectGetPrototype(context, curr);
2220         }
2221
2222         CYSetPrototype(context, last, cache);
2223     }
2224
2225     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2226     CYSetProperty(context, cy, CYJSString("System"), System);
2227
2228     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2229
2230     CYSetProperty(context, global, CYJSString("system"), System);
2231     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2232     CYSetProperty(context, System, CYJSString("print"), &System_print);
2233
2234     CYSetProperty(context, global, CYJSString("global"), global);
2235
2236 #ifdef __APPLE__
2237     if (&JSWeakObjectMapCreate != NULL) {
2238         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2239         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2240     }
2241 #endif
2242
2243     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2244     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2245     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2246
2247     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2248
2249     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2250     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2251     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2252     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2253
2254     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2255     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2256     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2257     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2258
2259     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2260     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2261     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2262     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2263
2264     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2265     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2266
2267     for (CYHook *hook : GetHooks())
2268         if (hook->SetupContext != NULL)
2269             (*hook->SetupContext)(context);
2270
2271     CYArrayPush(context, alls, cycript);
2272
2273     CYRunScript(context, "/libcycript.cy");
2274 }
2275
2276 static JSGlobalContextRef context_;
2277
2278 _visible JSGlobalContextRef CYGetJSContext() {
2279     CYInitializeDynamic();
2280
2281     if (context_ == NULL) {
2282         context_ = JSGlobalContextCreate(Global_);
2283         CYSetupContext(context_);
2284     }
2285
2286     return context_;
2287 }
2288
2289 _visible void CYDestroyContext() {
2290     if (context_ == NULL)
2291         return;
2292     JSGlobalContextRelease(context_);
2293     context_ = NULL;
2294 }