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_(signed short int)
 332 CYCastJSValue_(unsigned short int)
 333 CYCastJSValue_(signed int)
 334 CYCastJSValue_(unsigned int)
 335 CYCastJSValue_(signed long int)
 336 CYCastJSValue_(unsigned long int)
 337 CYCastJSValue_(signed long long int)
 338 CYCastJSValue_(unsigned long long int)
 339
 340 JSValueRef CYJSUndefined(JSContextRef context) {
 341     return JSValueMakeUndefined(context);
 342 }
 343
 344 double CYCastDouble(JSContextRef context, JSValueRef value) {
 345     return _jsccall(JSValueToNumber, context, value);
 346 }
 347
 348 bool CYCastBool(JSContextRef context, JSValueRef value) {
 349     return JSValueToBoolean(context, value);
 350 }
 351
 352 JSValueRef CYJSNull(JSContextRef context) {
 353     return JSValueMakeNull(context);
 354 }
 355
 356 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 357     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 358 }
 359
 360 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 361     return CYCastJSValue(context, CYJSString(value));
 362 }
 363
 364 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 365     return _jsccall(JSValueToObject, context, value);
 366 }
 367
 368 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 369     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 370 }
 371
 372 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 373     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 374 }
 375
 376 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 377     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 378 }
 379
 380 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 381     return JSValueIsStrictEqual(context, lhs, rhs);
 382 }
 383
 384 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 385     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 386 }
 387
 388 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 389     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 390 }
 391
 392 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 393     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 394     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 395 }
 396
 397 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 398     return CYArrayPush(context, array, 1, &value);
 399 }
 400
 401 template <size_t Size_>
 402 class CYArrayBuilder {
 403   private:
 404     JSContextRef context_;
 405     JSObjectRef &array_;
 406     size_t size_;
 407     JSValueRef values_[Size_];
 408
 409     void flush() {
 410         if (array_ == NULL)
 411             array_ = CYObjectMakeArray(context_, size_, values_);
 412         else
 413             CYArrayPush(context_, array_, size_, values_);
 414     }
 415
 416   public:
 417     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 418         context_(context),
 419         array_(array),
 420         size_(0)
 421     {
 422     }
 423
 424     ~CYArrayBuilder() {
 425         flush();
 426     }
 427
 428     void operator ()(JSValueRef value) {
 429         if (size_ == Size_) {
 430             flush();
 431             size_ = 0;
 432         }
 433
 434         values_[size_++] = value;
 435     }
 436 };
 437
 438 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 439     FILE *file(stdout);
 440
 441     if (count == 0)
 442         fputc('\n', file);
 443     else {
 444         CYPool pool;
 445         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 446         fwrite(string.data, string.size, 1, file);
 447     }
 448
 449     fflush(file);
 450     return CYJSUndefined(context);
 451 } CYCatch(NULL) }
 452
 453 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 454
 455 _visible void CYGarbageCollect(JSContextRef context) {
 456     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 457 }
 458
 459 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 460     CYPool pool;
 461     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 462     std::stringbuf value(std::string(before.data, before.size));
 463     CYUTF8String after(CYPoolCode(pool, value));
 464     return CYCastJSValue(context, CYJSString(after));
 465 } CYCatch_(NULL, "SyntaxError") }
 466
 467 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 468     CYGarbageCollect(context);
 469     return CYJSUndefined(context);
 470 } CYCatch(NULL) }
 471
 472 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 473     switch (JSType type = JSValueGetType(context, value)) {
 474         case kJSTypeUndefined:
 475             return "undefined";
 476         case kJSTypeNull:
 477             return "null";
 478         case kJSTypeBoolean:
 479             return CYCastBool(context, value) ? "true" : "false";
 480
 481         case kJSTypeNumber: {
 482             std::ostringstream str;
 483             CYNumerify(str, CYCastDouble(context, value));
 484             std::string value(str.str());
 485             return pool.strmemdup(value.c_str(), value.size());
 486         } break;
 487
 488         case kJSTypeString: {
 489             std::ostringstream str;
 490             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 491             CYStringify(str, string.data, string.size);
 492             std::string value(str.str());
 493             return pool.strmemdup(value.c_str(), value.size());
 494         } break;
 495
 496         case kJSTypeObject:
 497             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 498         default:
 499             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 500     }
 501 } CYCatch(NULL) }
 502
 503 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 504     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 505 }
 506
 507 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 508     if (objects != NULL)
 509         return CYPoolCCYON(pool, context, value, *objects);
 510     else {
 511         std::set<void *> objects;
 512         return CYPoolCCYON(pool, context, value, objects);
 513     }
 514 }
 515
 516 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 517     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 518     if (CYIsCallable(context, toCYON)) {
 519         // XXX: this needs to be abstracted behind some kind of function
 520         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 521         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 522         _assert(value != NULL);
 523         return CYPoolCString(pool, context, value);
 524     }
 525
 526     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 527     if (CYIsCallable(context, toJSON)) {
 528         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 529         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 530     }
 531
 532     if (JSObjectIsFunction(context, object)) {
 533         JSValueRef toString(CYGetProperty(context, object, toString_s));
 534         if (CYIsCallable(context, toString)) {
 535             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 536             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 537             _assert(value != NULL);
 538             return CYPoolCString(pool, context, value);
 539         }
 540     }
 541
 542     _assert(objects.insert(object).second);
 543
 544     std::ostringstream str;
 545
 546     str << '{';
 547
 548     // XXX: this is, sadly, going to leak
 549     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 550
 551     bool comma(false);
 552
 553     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 554         if (comma)
 555             str << ',';
 556         else
 557             comma = true;
 558
 559         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 560         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 561
 562         if (CYIsKey(string))
 563             str << string.data;
 564         else
 565             CYStringify(str, string.data, string.size);
 566
 567         str << ':';
 568
 569         try {
 570             JSValueRef value(CYGetProperty(context, object, name));
 571             str << CYPoolCCYON(pool, context, value, objects);
 572         } catch (const CYException &error) {
 573             str << "@error";
 574         }
 575     }
 576
 577     JSPropertyNameArrayRelease(names);
 578
 579     str << '}';
 580
 581     std::string string(str.str());
 582     return pool.strmemdup(string.c_str(), string.size());
 583 }
 584
 585 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 586     if (count == 0)
 587         return NULL;
 588     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 589 }
 590
 591 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 592     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 593     // XXX: this is horribly inefficient
 594     std::set<void *> backup;
 595     if (objects == NULL)
 596         objects = &backup;
 597
 598     CYPool pool;
 599     std::ostringstream str;
 600
 601     str << '[';
 602
 603     JSValueRef length(CYGetProperty(context, _this, length_s));
 604     bool comma(false);
 605
 606     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 607         if (comma)
 608             str << ',';
 609         else
 610             comma = true;
 611
 612         try {
 613             JSValueRef value(CYGetProperty(context, _this, index));
 614             if (!JSValueIsUndefined(context, value))
 615                 str << CYPoolCCYON(pool, context, value, *objects);
 616             else {
 617                 str << ',';
 618                 comma = false;
 619             }
 620         } catch (const CYException &error) {
 621             str << "@error";
 622         }
 623     }
 624
 625     str << ']';
 626
 627     std::string value(str.str());
 628     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 629 } CYCatch(NULL) }
 630
 631 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 632     CYPool pool;
 633     std::ostringstream str;
 634
 635     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 636     CYStringify(str, string.data, string.size);
 637
 638     std::string value(str.str());
 639     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 640 } CYCatch(NULL) }
 641
 642 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 643     Pointer *internal(new Pointer(pointer, context, owner, type));
 644     return JSObjectMake(context, Pointer_, internal);
 645 }
 646
 647 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const char *encoding, JSObjectRef owner) {
 648     Pointer *internal(new Pointer(pointer, context, owner, encoding));
 649     return JSObjectMake(context, Pointer_, internal);
 650 }
 651
 652 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 653     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 654 }
 655
 656 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 657     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 658     if (function == NULL)
 659         return NULL;
 660
 661     cy::Functor *internal(new cy::Functor(encoding, function));
 662     ++internal->count_;
 663     return JSObjectMake(context, Functor_, internal);
 664 }
 665
 666 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 667     return CYGetOffset(CYPoolCString(pool, context, value), index);
 668 }
 669
 670 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 671     if (value == NULL)
 672         return NULL;
 673     else switch (JSValueGetType(context, value)) {
 674         case kJSTypeNull:
 675             return NULL;
 676         case kJSTypeObject: {
 677             JSObjectRef object((JSObjectRef) value);
 678             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 679                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 680                 return internal->value_;
 681             }
 682             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 683             if (CYIsCallable(context, toPointer)) {
 684                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 685                 _assert(value != NULL);
 686                 return CYCastPointer_(context, value, guess);
 687             }
 688         } default:
 689             if (guess != NULL)
 690                 *guess = true;
 691         case kJSTypeNumber:
 692             double number(CYCastDouble(context, value));
 693             if (!std::isnan(number))
 694                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 695             if (guess == NULL)
 696                 throw CYJSError(context, "cannot convert value to pointer");
 697             else {
 698                 *guess = true;
 699                 return NULL;
 700             }
 701     }
 702 }
 703
 704 namespace sig {
 705
 706 // XXX: this is somehow not quite a template :/
 707
 708 template <>
 709 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 710     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 711 }
 712
 713 #define CYPoolFFI_(Type_) \
 714 template <> \
 715 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 716     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 717 }
 718
 719 CYPoolFFI_(char)
 720 CYPoolFFI_(double)
 721 CYPoolFFI_(float)
 722 CYPoolFFI_(signed char)
 723 CYPoolFFI_(signed int)
 724 CYPoolFFI_(signed long int)
 725 CYPoolFFI_(signed long long int)
 726 CYPoolFFI_(signed short int)
 727 CYPoolFFI_(unsigned char)
 728 CYPoolFFI_(unsigned int)
 729 CYPoolFFI_(unsigned long int)
 730 CYPoolFFI_(unsigned long long int)
 731 CYPoolFFI_(unsigned short int)
 732
 733 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 734     _assert(false);
 735 }
 736
 737 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 738     _assert(false);
 739 }
 740
 741 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 742     bool guess(false);
 743     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 744     if (guess && pool != NULL)
 745         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 746 }
 747
 748 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 749     _assert(false);
 750 }
 751
 752 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 753     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 754 }
 755
 756 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 757     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 758     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 759     for (size_t index(0); index != size; ++index) {
 760         ffi_type *field(ffi->elements[index]);
 761
 762         JSValueRef rhs;
 763         if (aggregate == NULL)
 764             rhs = value;
 765         else {
 766             rhs = CYGetProperty(context, aggregate, index);
 767             if (JSValueIsUndefined(context, rhs))
 768                 throw CYJSError(context, "unable to extract array value");
 769         }
 770
 771         type.PoolFFI(pool, context, field, base, rhs);
 772         base += field->size;
 773     }
 774 }
 775
 776 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 777     _assert(!overlap);
 778
 779     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 780     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 781     for (size_t index(0); index != signature.count; ++index) {
 782         sig::Element *element(&signature.elements[index]);
 783         ffi_type *field(ffi->elements[index]);
 784
 785         JSValueRef rhs;
 786         if (aggregate == NULL)
 787             rhs = value;
 788         else {
 789             rhs = CYGetProperty(context, aggregate, index);
 790             if (JSValueIsUndefined(context, rhs)) {
 791                 if (element->name != NULL)
 792                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 793                 else
 794                     goto undefined;
 795                 if (JSValueIsUndefined(context, rhs)) undefined:
 796                     throw CYJSError(context, "unable to extract structure value");
 797             }
 798         }
 799
 800         element->type->PoolFFI(pool, context, field, base, rhs);
 801         base += field->size;
 802     }
 803 }
 804
 805 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 806     _assert(false);
 807 }
 808
 809 #define CYFromFFI_(Type_) \
 810 template <> \
 811 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 812     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 813 }
 814
 815 CYFromFFI_(bool)
 816 CYFromFFI_(char)
 817 CYFromFFI_(double)
 818 CYFromFFI_(float)
 819 CYFromFFI_(signed char)
 820 CYFromFFI_(signed int)
 821 CYFromFFI_(signed long int)
 822 CYFromFFI_(signed long long int)
 823 CYFromFFI_(signed short int)
 824 CYFromFFI_(unsigned char)
 825 CYFromFFI_(unsigned int)
 826 CYFromFFI_(unsigned long int)
 827 CYFromFFI_(unsigned long long int)
 828 CYFromFFI_(unsigned short int)
 829
 830 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 831     return CYJSUndefined(context);
 832 }
 833
 834 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 835     _assert(false);
 836 }
 837
 838 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 839     if (char *value = *reinterpret_cast<char **>(data))
 840         return CYMakeCString(context, value, owner);
 841     return CYJSNull(context);
 842 }
 843
 844 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 845     _assert(false);
 846 }
 847
 848 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 849     if (void *value = *reinterpret_cast<void **>(data))
 850         return CYMakePointer(context, value, type, NULL, owner);
 851     return CYJSNull(context);
 852 }
 853
 854 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 855     return CYMakeCArray(context, data, size, type, ffi->elements[0], owner);
 856 }
 857
 858 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 859     return CYMakeStruct(context, data, *this, ffi, owner);
 860 }
 861
 862 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 863     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), signature);
 864 }
 865
 866 }
 867
 868 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 869     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 870
 871     JSContextRef context(internal->context_);
 872
 873     size_t count(internal->cif_.nargs);
 874     JSValueRef values[count];
 875
 876     for (size_t index(0); index != count; ++index)
 877         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 878
 879     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 880     if (internal->cif_.rtype != &ffi_type_void)
 881         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 882 }
 883
 884 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 885     return CYCallAsFunction(context, function, NULL, count, values);
 886 }
 887
 888 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 889     // XXX: in case of exceptions this will leak
 890     // XXX: in point of fact, this may /need/ to leak :(
 891     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 892
 893 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 894     void *executable;
 895     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 896
 897     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 898     _assert(status == FFI_OK);
 899
 900     internal->value_ = executable;
 901 #else
 902     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 903         NULL, sizeof(ffi_closure),
 904         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 905         -1, 0
 906     )));
 907
 908     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 909     _assert(status == FFI_OK);
 910
 911     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 912
 913     internal->value_ = closure;
 914 #endif
 915
 916     return internal;
 917 }
 918
 919 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 920     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 921     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 922     // XXX: see above notes about needing to leak
 923     JSValueProtect(CYGetJSContext(context), object);
 924     return object;
 925 }
 926
 927 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 928     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 929 }
 930
 931 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 932     return CYCastJSObject(context, CYGetCachedValue(context, name));
 933 }
 934
 935 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 936     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 937
 938     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 939     if (function) {
 940         JSObjectRef function(CYCastJSObject(context, value));
 941         return CYMakeFunctor(context, function, signature);
 942     } else {
 943         void (*function)()(CYCastPointer<void (*)()>(context, value));
 944         return CYMakeFunctor(context, function, signature);
 945     }
 946 }
 947
 948 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 949     CYPool pool;
 950     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 951     char *string(static_cast<char *>(internal->value_));
 952
 953     ssize_t offset;
 954     if (!CYGetOffset(pool, context, property, offset))
 955         return NULL;
 956
 957     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 958 } CYCatch(NULL) }
 959
 960 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 961     CYPool pool;
 962     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 963     char *string(static_cast<char *>(internal->value_));
 964
 965     ssize_t offset;
 966     if (!CYGetOffset(pool, context, property, offset))
 967         return false;
 968
 969     const char *data(CYPoolCString(pool, context, value));
 970     string[offset] = *data;
 971     return true;
 972 } CYCatch(false) }
 973
 974 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 975     Type_privateData *typical(internal->type_);
 976     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
 977     if (type == NULL)
 978         return false;
 979
 980     const char *name(CYPoolCString(pool, context, property));
 981     size_t length(strlen(name));
 982     double number(CYCastDouble(name, length));
 983
 984     size_t count(type->signature.count);
 985
 986     if (std::isnan(number)) {
 987         if (property == NULL)
 988             return false;
 989
 990         sig::Element *elements(type->signature.elements);
 991
 992         for (size_t local(0); local != count; ++local) {
 993             sig::Element *element(&elements[local]);
 994             if (element->name != NULL && strcmp(name, element->name) == 0) {
 995                 index = local;
 996                 goto base;
 997             }
 998         }
 999
1000         return false;
1001     } else {
1002         index = static_cast<ssize_t>(number);
1003         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1004             return false;
1005     }
1006
1007   base:
1008     ffi_type **elements(typical->GetFFI()->elements);
1009
1010     size_t offset(0);
1011     for (ssize_t local(0); local != index; ++local) {
1012         offset += elements[local]->size;
1013         CYAlign(offset, elements[local + 1]->alignment);
1014     }
1015
1016     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1017     return true;
1018 }
1019
1020 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1021     ssize_t offset;
1022     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1023         offset = 0;
1024     else if (!CYGetOffset(pool, context, property, offset))
1025         return NULL;
1026     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1027 }
1028
1029 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1030     ffi_type *ffi(typical->GetFFI());
1031     void *base(Offset_(pool, context, property, data, ffi));
1032     if (base == NULL)
1033         return NULL;
1034     return typical->type_->FromFFI(context, ffi, base, false, owner);
1035 }
1036
1037 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1038     ffi_type *ffi(typical->GetFFI());
1039     void *base(Offset_(pool, context, property, data, ffi));
1040     if (base == NULL)
1041         return false;
1042
1043     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1044     return true;
1045 }
1046
1047 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1048     CYPool pool;
1049     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1050     if (JSStringIsEqual(property, length_s))
1051         return CYCastJSValue(context, internal->length_);
1052     Type_privateData *typical(internal->type_);
1053     JSObjectRef owner(internal->GetOwner() ?: object);
1054     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1055 } CYCatch(NULL) }
1056
1057 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1058     CYPool pool;
1059     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1060     Type_privateData *typical(internal->type_);
1061     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1062 } CYCatch(false) }
1063
1064 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1065     CYPool pool;
1066     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1067
1068     Type_privateData *typical(internal->type_);
1069
1070     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1071         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1072             return NULL;
1073         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->signature);
1074     }
1075
1076     JSObjectRef owner(internal->GetOwner() ?: object);
1077     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1078 } CYCatch(NULL) }
1079
1080 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1081     CYPool pool;
1082     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1083     Type_privateData *typical(internal->type_);
1084     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1085 } CYCatch(false) }
1086
1087 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1088     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1089     Type_privateData *typical(internal->type_);
1090     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1091 } CYCatch(NULL) }
1092
1093 static JSValueRef Struct_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1094     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1095     return CYMakeType(context, *internal->type_->type_);
1096 } CYCatch(NULL) }
1097
1098 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1099     CYPool pool;
1100     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1101     Type_privateData *typical(internal->type_);
1102     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1103
1104     ssize_t index;
1105     uint8_t *base;
1106
1107     if (!Index_(pool, context, internal, property, index, base))
1108         return NULL;
1109
1110     JSObjectRef owner(internal->GetOwner() ?: object);
1111
1112     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1113 } CYCatch(NULL) }
1114
1115 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1116     CYPool pool;
1117     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1118     Type_privateData *typical(internal->type_);
1119     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1120
1121     ssize_t index;
1122     uint8_t *base;
1123
1124     if (!Index_(pool, context, internal, property, index, base))
1125         return false;
1126
1127     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1128     return true;
1129 } CYCatch(false) }
1130
1131 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1132     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1133     Type_privateData *typical(internal->type_);
1134     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1135
1136     if (type == NULL)
1137         return;
1138
1139     size_t count(type->signature.count);
1140     sig::Element *elements(type->signature.elements);
1141
1142     char number[32];
1143
1144     for (size_t index(0); index != count; ++index) {
1145         const char *name;
1146         name = elements[index].name;
1147
1148         if (name == NULL) {
1149             sprintf(number, "%zu", index);
1150             name = number;
1151         }
1152
1153         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1154     }
1155 }
1156
1157 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1158     ffi_call(cif, function, value, values);
1159 }
1160
1161 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)()) {
1162     if (setups + count != signature->count - 1)
1163         throw CYJSError(context, "incorrect number of arguments to ffi function");
1164
1165     size_t size(setups + count);
1166     void *values[size];
1167     memcpy(values, setup, sizeof(void *) * setups);
1168
1169     for (size_t index(setups); index != size; ++index) {
1170         sig::Element *element(&signature->elements[index + 1]);
1171         ffi_type *ffi(cif->arg_types[index]);
1172         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1173         element->type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1174     }
1175
1176     uint8_t value[cif->rtype->size];
1177
1178     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1179     // XXX: this only supports one hook, but it is a bad idea anyway
1180     for (CYHook *hook : GetHooks())
1181         if (hook->CallFunction != NULL)
1182             call = hook->CallFunction;
1183
1184     call(pool, context, cif, function, value, values);
1185     return signature->elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1186 }
1187
1188 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1189     CYPool pool;
1190     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1191     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1192 } CYCatch(NULL) }
1193
1194 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1195     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1196     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1197         throw CYJSError(context, "cannot call a pointer to non-function");
1198     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1199     return CYCallAsFunction(context, functor, _this, count, arguments);
1200 } CYCatch(NULL) }
1201
1202 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1203     Type_privateData *internal(new Type_privateData(type));
1204     return JSObjectMake(context, Type_privateData::Class_, internal);
1205 }
1206
1207 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1208     CYPool pool;
1209     sig::Function type;
1210     sig::Copy(pool, type.signature, *signature);
1211     return CYMakeType(context, type);
1212 }
1213
1214 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1215     sqlite3_stmt *statement;
1216
1217     _sqlcall(sqlite3_prepare(database_,
1218         "select "
1219             "\"cache\".\"code\", "
1220             "\"cache\".\"flags\" "
1221         "from \"cache\" "
1222         "where"
1223             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1224             " \"cache\".\"name\" = ?"
1225         " limit 1"
1226     , -1, &statement, NULL));
1227
1228     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1229
1230     bool success;
1231     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1232         success = false;
1233     else {
1234         success = true;
1235         code = sqlite3_column_pooled(pool, statement, 0);
1236         flags = sqlite3_column_int(statement, 1);
1237     }
1238
1239     _sqlcall(sqlite3_finalize(statement));
1240     return success;
1241 }
1242
1243 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1244     if (JSStringIsEqualToUTF8CString(property, "errno"))
1245         return true;
1246
1247     JSObjectRef global(CYGetGlobalObject(context));
1248     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1249     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1250
1251     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1252         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1253             if (CYHasProperty(context, space, property))
1254                 return true;
1255
1256     CYPool pool;
1257     const char *code;
1258     unsigned flags;
1259     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1260         return true;
1261
1262     return false;
1263 }
1264
1265 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1266     if (JSStringIsEqualToUTF8CString(property, "errno"))
1267         return CYCastJSValue(context, errno);
1268
1269     JSObjectRef global(CYGetGlobalObject(context));
1270     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1271     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1272
1273     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1274         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1275             if (JSValueRef value = CYGetProperty(context, space, property))
1276                 if (!JSValueIsUndefined(context, value))
1277                     return value;
1278
1279     CYPool pool;
1280     const char *code;
1281     unsigned flags;
1282     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1283         CYUTF8String parsed;
1284
1285         try {
1286             parsed = CYPoolCode(pool, code);
1287         } catch (const CYException &error) {
1288             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1289         }
1290
1291         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1292
1293         if (flags == 0) {
1294             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1295             CYSetProperty(context, cache, property, result);
1296         }
1297
1298         return result;
1299     }
1300
1301     return NULL;
1302 } CYCatch(NULL) }
1303
1304 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1305     _assert(count == 1);
1306     CYPool pool;
1307     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1308
1309     JSObjectRef array(NULL);
1310
1311     {
1312     CYArrayBuilder<1024> values(context, array);
1313
1314     sqlite3_stmt *statement;
1315
1316     if (prefix.size == 0)
1317         _sqlcall(sqlite3_prepare(database_,
1318             "select "
1319                 "\"cache\".\"name\" "
1320             "from \"cache\" "
1321             "where"
1322                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1323         , -1, &statement, NULL));
1324     else {
1325         _sqlcall(sqlite3_prepare(database_,
1326             "select "
1327                 "\"cache\".\"name\" "
1328             "from \"cache\" "
1329             "where"
1330                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1331                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1332         , -1, &statement, NULL));
1333
1334         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1335
1336         char *after(pool.strndup(prefix.data, prefix.size));
1337         ++after[prefix.size - 1];
1338         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1339     }
1340
1341     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1342         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1343
1344     _sqlcall(sqlite3_finalize(statement));
1345     }
1346
1347     return array;
1348 } CYCatch(NULL) }
1349
1350 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1351     JSObjectRef global(CYGetGlobalObject(context));
1352     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1353     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1354
1355     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1356         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1357             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1358             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1359                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1360             JSPropertyNameArrayRelease(subset);
1361         }
1362 }
1363
1364 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1365     _assert(false);
1366 } CYCatch(NULL) }
1367
1368 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1369     _assert(false);
1370 } CYCatch(NULL) }
1371
1372 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1373     _assert(false);
1374 } CYCatch(NULL) }
1375
1376 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1377     CYPool pool;
1378
1379     if (false) {
1380     } else if (count == 1) {
1381         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1382         sig::Signature signature;
1383         sig::Parse(pool, &signature, encoding, &Structor_);
1384         return CYMakeType(context, *signature.elements[0].type);
1385     } else if (count == 2) {
1386         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1387         size_t count(CYArrayLength(context, types));
1388
1389         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1390
1391         sig::Aggregate type(false);
1392         type.signature.elements = new(pool) sig::Element[count];
1393         type.signature.count = count;
1394
1395         for (size_t i(0); i != count; ++i) {
1396             sig::Element &element(type.signature.elements[i]);
1397             element.offset = _not(size_t);
1398
1399             JSValueRef name(CYArrayGet(context, names, i));
1400             if (JSValueIsUndefined(context, name))
1401                 element.name = NULL;
1402             else
1403                 element.name = CYPoolCString(pool, context, name);
1404
1405             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1406             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1407             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1408             element.type = internal->type_;
1409         }
1410
1411         return CYMakeType(context, type);
1412     } else {
1413         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1414     }
1415 } CYCatch(NULL) }
1416
1417 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1418     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1419
1420     CYPool pool;
1421
1422     type.signature.elements = new(pool) sig::Element[1 + count];
1423     type.signature.count = 1 + count;
1424
1425     type.signature.elements[0].name = NULL;
1426     type.signature.elements[0].type = internal->type_;
1427     type.signature.elements[0].offset = _not(size_t);
1428
1429     for (size_t i(0); i != count; ++i) {
1430         sig::Element &element(type.signature.elements[i + 1]);
1431         element.name = NULL;
1432         element.offset = _not(size_t);
1433
1434         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1435         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1436         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1437
1438         element.type = internal->type_;
1439     }
1440
1441     return CYMakeType(context, type);
1442 } CYCatch(NULL) }
1443
1444 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1445     if (count != 1)
1446         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1447     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1448
1449     CYPool pool;
1450     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1451     if (index == _not(size_t))
1452         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1453
1454     sig::Array type(*internal->type_, index);
1455     return CYMakeType(context, type);
1456 } CYCatch(NULL) }
1457
1458 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1459     sig::Block type;
1460     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1461 }
1462
1463 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1464     if (count != 0)
1465         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1466     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1467
1468     CYPool pool;
1469     sig::Type *type(internal->type_->Copy(pool));
1470     type->flags |= JOC_TYPE_CONST;
1471     return CYMakeType(context, *type);
1472 } CYCatch(NULL) }
1473
1474 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1475     sig::Function type;
1476     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1477 }
1478
1479 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1480     if (count != 0)
1481         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1482     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1483
1484     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1485         return CYMakeType(context, sig::String());
1486     else
1487         return CYMakeType(context, sig::Pointer(*internal->type_));
1488 } CYCatch(NULL) }
1489
1490 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1491     if (count != 1)
1492         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1493     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1494
1495     CYPool pool;
1496     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1497 } CYCatch(NULL) }
1498
1499 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1500     if (count != 1)
1501         throw CYJSError(context, "incorrect number of arguments to type cast function");
1502     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1503
1504     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1505         return CYMakeFunctor(context, arguments[0], function->signature);
1506
1507     CYPool pool;
1508     sig::Type *type(internal->type_);
1509     ffi_type *ffi(internal->GetFFI());
1510     void *value(pool.malloc<void>(ffi->size, ffi->alignment));
1511     type->PoolFFI(&pool, context, ffi, value, arguments[0]);
1512     return type->FromFFI(context, ffi, value);
1513 } CYCatch(NULL) }
1514
1515 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1516     if (count != 0)
1517         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1518     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1519
1520     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1521     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1522     ffi_type *ffi(internal->GetFFI());
1523     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1524     memset(value->value_, 0, ffi->size);
1525     return pointer;
1526 } CYCatch(NULL) }
1527
1528 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1529     if (count != 2)
1530         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1531     CYPool pool;
1532     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1533     sig::Signature signature;
1534     sig::Parse(pool, &signature, encoding, &Structor_);
1535     return CYMakeFunctor(context, arguments[0], signature);
1536 } CYCatch(NULL) }
1537
1538 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1539     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1540     JSObjectRef owner(internal->GetOwner() ?: object);
1541     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1542 } CYCatch(NULL) }
1543
1544 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1545     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1546     JSObjectRef owner(internal->GetOwner() ?: object);
1547     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1548 } CYCatch(NULL) }
1549
1550 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1551     CYPool pool;
1552     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1553
1554     sig::Function type;
1555     sig::Copy(pool, type.signature, internal->signature_);
1556
1557     return CYMakePointer(context, internal->value_, type, NULL, NULL);
1558 } CYCatch(NULL) }
1559
1560 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1561     return _this;
1562 } CYCatch(NULL) }
1563
1564 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1565     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1566     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1567 } CYCatch(NULL) }
1568
1569 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1570     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1571 }
1572
1573 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1574     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1575     std::ostringstream str;
1576     Dl_info info;
1577     if (internal->value_ == NULL)
1578         str << "NULL";
1579     else if (dladdr(internal->value_, &info) == 0)
1580         str << internal->value_;
1581     else {
1582         str << info.dli_sname;
1583         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1584         if (offset != 0)
1585             str << "+0x" << std::hex << offset;
1586     }
1587     std::string value(str.str());
1588     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1589 } CYCatch(NULL) }
1590
1591 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1592     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1593
1594     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1595
1596     try {
1597         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1598         if (!JSValueIsUndefined(context, value)) {
1599             CYPool pool;
1600             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1601         }
1602     } catch (const CYException &e) {
1603         // XXX: it might be interesting to include this error
1604     }
1605
1606     CYLocalPool pool;
1607     std::ostringstream str;
1608
1609     sig::Pointer type(*internal->type_->type_);
1610
1611     CYOptions options;
1612     CYOutput output(*str.rdbuf(), options);
1613     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1614
1615     str << "(" << internal->value_ << ")";
1616     std::string value(str.str());
1617     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1618 } CYCatch(NULL) }
1619
1620 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1621     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1622     char *string(static_cast<char *>(internal->value_));
1623     return CYCastJSValue(context, strlen(string));
1624 } CYCatch(NULL) }
1625
1626 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1627     return CYMakeType(context, sig::String());
1628 } CYCatch(NULL) }
1629
1630 static JSValueRef CArray_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1631     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1632     sig::Array type(*internal->type_->type_, internal->length_);
1633     return CYMakeType(context, type);
1634 } CYCatch(NULL) }
1635
1636 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1637     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1638     sig::Pointer type(*internal->type_->type_);
1639     return CYMakeType(context, type);
1640 } CYCatch(NULL) }
1641
1642 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1643     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1644     const char *string(static_cast<const char *>(internal->value_));
1645     std::ostringstream str;
1646     if (string == NULL)
1647         str << "NULL";
1648     else {
1649         str << "&";
1650         CYStringify(str, string, strlen(string), true);
1651     }
1652     std::string value(str.str());
1653     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1654 } CYCatch(NULL) }
1655
1656 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1657     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1658     const char *string(static_cast<const char *>(internal->value_));
1659     return CYCastJSValue(context, string);
1660 } CYCatch(NULL) }
1661
1662 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1663     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1664     return CYMakeType(context, &internal->signature_);
1665 } CYCatch(NULL) }
1666
1667 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1668     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1669     return CYCastJSValue(context, internal->GetFFI()->alignment);
1670 } CYCatch(NULL) }
1671
1672 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1673     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1674     return CYCastJSValue(context, internal->type_->GetName());
1675 } CYCatch(NULL) }
1676
1677 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1678     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1679     return CYCastJSValue(context, internal->GetFFI()->size);
1680 } CYCatch(NULL) }
1681
1682 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1683     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1684     CYPool pool;
1685     const char *type(sig::Unparse(pool, internal->type_));
1686     return CYCastJSValue(context, CYJSString(type));
1687 } CYCatch(NULL) }
1688
1689 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1690     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1691     CYLocalPool pool;
1692     std::stringbuf out;
1693     CYOptions options;
1694     CYOutput output(out, options);
1695     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_)))->Output(output, CYNoFlags);
1696     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1697 } CYCatch(NULL) }
1698
1699 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1700     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1701 }
1702
1703 static JSStaticFunction All_staticFunctions[2] = {
1704     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1705     {NULL, NULL, 0}
1706 };
1707
1708 static JSStaticFunction CArray_staticFunctions[4] = {
1709     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1710     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1711     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1712     {NULL, NULL, 0}
1713 };
1714
1715 static JSStaticValue CArray_staticValues[2] = {
1716     {"type", &CArray_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1717     {NULL, NULL, NULL, 0}
1718 };
1719
1720 static JSStaticFunction CString_staticFunctions[6] = {
1721     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1722     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1723     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1724     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1725     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1726     {NULL, NULL, 0}
1727 };
1728
1729 static JSStaticValue CString_staticValues[3] = {
1730     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1731     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1732     {NULL, NULL, NULL, 0}
1733 };
1734
1735 static JSStaticFunction Pointer_staticFunctions[5] = {
1736     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1737     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1738     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1739     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1740     {NULL, NULL, 0}
1741 };
1742
1743 static JSStaticValue Pointer_staticValues[2] = {
1744     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1745     {NULL, NULL, NULL, 0}
1746 };
1747
1748 static JSStaticFunction Struct_staticFunctions[2] = {
1749     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1750     {NULL, NULL, 0}
1751 };
1752
1753 static JSStaticValue Struct_staticValues[2] = {
1754     {"type", &Struct_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1755     {NULL, NULL, NULL, 0}
1756 };
1757
1758 static JSStaticFunction Functor_staticFunctions[5] = {
1759     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1760     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1761     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1762     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1763     {NULL, NULL, 0}
1764 };
1765
1766 namespace cy {
1767     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1768 }
1769
1770 static JSStaticValue Functor_staticValues[2] = {
1771     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1772     {NULL, NULL, NULL, 0}
1773 };
1774
1775 namespace cy {
1776     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1777 }
1778
1779 static JSStaticValue Type_staticValues[4] = {
1780     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1781     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1782     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1783     {NULL, NULL, NULL, 0}
1784 };
1785
1786 static JSStaticFunction Type_staticFunctions[10] = {
1787     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1788     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1789     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1790     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1791     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1792     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1793     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1794     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1795     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1796     {NULL, NULL, 0}
1797 };
1798
1799 _visible void CYSetArgs(int argc, const char *argv[]) {
1800     JSContextRef context(CYGetJSContext());
1801     JSValueRef args[argc];
1802     for (int i(0); i != argc; ++i)
1803         args[i] = CYCastJSValue(context, argv[i]);
1804
1805     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1806     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1807     CYSetProperty(context, System, CYJSString("args"), array);
1808 }
1809
1810 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1811     return JSContextGetGlobalObject(context);
1812 }
1813
1814 // XXX: this is neither exceptin safe nor even terribly sane
1815 class ExecutionHandle {
1816   private:
1817     JSContextRef context_;
1818     std::vector<void *> handles_;
1819
1820   public:
1821     ExecutionHandle(JSContextRef context) :
1822         context_(context)
1823     {
1824         handles_.resize(GetHooks().size());
1825         for (size_t i(0); i != GetHooks().size(); ++i) {
1826             CYHook *hook(GetHooks()[i]);
1827             if (hook->ExecuteStart != NULL)
1828                 handles_[i] = (*hook->ExecuteStart)(context_);
1829             else
1830                 handles_[i] = NULL;
1831         }
1832     }
1833
1834     ~ExecutionHandle() {
1835         for (size_t i(GetHooks().size()); i != 0; --i) {
1836             CYHook *hook(GetHooks()[i-1]);
1837             if (hook->ExecuteEnd != NULL)
1838                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1839         }
1840     }
1841 };
1842
1843 static volatile bool cancel_;
1844
1845 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1846     return cancel_;
1847 }
1848
1849 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1850     ExecutionHandle handle(context);
1851
1852     cancel_ = false;
1853     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1854         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1855
1856     try {
1857         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1858         if (JSValueIsUndefined(context, result))
1859             return NULL;
1860
1861         std::set<void *> objects;
1862         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1863         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1864
1865         return json;
1866     } catch (const CYException &error) {
1867         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1868     }
1869 }
1870
1871 _visible void CYCancel() {
1872     cancel_ = true;
1873 }
1874
1875 static const char *CYPoolLibraryPath(CYPool &pool);
1876
1877 static bool initialized_ = false;
1878
1879 void CYInitializeDynamic() {
1880     if (!initialized_)
1881         initialized_ = true;
1882     else return;
1883
1884     CYPool pool;
1885     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1886     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1887
1888     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1889     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1890
1891     JSClassDefinition definition;
1892
1893     definition = kJSClassDefinitionEmpty;
1894     definition.className = "All";
1895     definition.staticFunctions = All_staticFunctions;
1896     definition.hasProperty = &All_hasProperty;
1897     definition.getProperty = &All_getProperty;
1898     definition.getPropertyNames = &All_getPropertyNames;
1899     All_ = JSClassCreate(&definition);
1900
1901     definition = kJSClassDefinitionEmpty;
1902     definition.className = "Context";
1903     definition.finalize = &CYFinalize;
1904     Context_ = JSClassCreate(&definition);
1905
1906     definition = kJSClassDefinitionEmpty;
1907     definition.className = "CArray";
1908     definition.staticFunctions = CArray_staticFunctions;
1909     definition.staticValues = CArray_staticValues;
1910     definition.getProperty = &CArray_getProperty;
1911     definition.setProperty = &CArray_setProperty;
1912     definition.finalize = &CYFinalize;
1913     CArray_ = JSClassCreate(&definition);
1914
1915     definition = kJSClassDefinitionEmpty;
1916     definition.className = "CString";
1917     definition.staticFunctions = CString_staticFunctions;
1918     definition.staticValues = CString_staticValues;
1919     definition.getProperty = &CString_getProperty;
1920     definition.setProperty = &CString_setProperty;
1921     definition.finalize = &CYFinalize;
1922     CString_ = JSClassCreate(&definition);
1923
1924     definition = kJSClassDefinitionEmpty;
1925     definition.className = "Functor";
1926     definition.staticFunctions = cy::Functor::StaticFunctions;
1927     definition.staticValues = Functor_staticValues;
1928     definition.callAsFunction = &Functor_callAsFunction;
1929     definition.finalize = &CYFinalize;
1930     Functor_ = JSClassCreate(&definition);
1931
1932     definition = kJSClassDefinitionEmpty;
1933     definition.className = "Pointer";
1934     definition.staticFunctions = Pointer_staticFunctions;
1935     definition.staticValues = Pointer_staticValues;
1936     definition.callAsFunction = &Pointer_callAsFunction;
1937     definition.getProperty = &Pointer_getProperty;
1938     definition.setProperty = &Pointer_setProperty;
1939     definition.finalize = &CYFinalize;
1940     Pointer_ = JSClassCreate(&definition);
1941
1942     definition = kJSClassDefinitionEmpty;
1943     definition.className = "Struct";
1944     definition.staticFunctions = Struct_staticFunctions;
1945     definition.staticValues = Struct_staticValues;
1946     definition.getProperty = &Struct_getProperty;
1947     definition.setProperty = &Struct_setProperty;
1948     definition.getPropertyNames = &Struct_getPropertyNames;
1949     definition.finalize = &CYFinalize;
1950     Struct_ = JSClassCreate(&definition);
1951
1952     definition = kJSClassDefinitionEmpty;
1953     definition.className = "Type";
1954     definition.staticValues = Type_staticValues;
1955     definition.staticFunctions = Type_staticFunctions;
1956     definition.callAsFunction = &Type_callAsFunction;
1957     definition.callAsConstructor = &Type_callAsConstructor;
1958     definition.finalize = &CYFinalize;
1959     Type_privateData::Class_ = JSClassCreate(&definition);
1960
1961     definition = kJSClassDefinitionEmpty;
1962     definition.className = "Global";
1963     //definition.getProperty = &Global_getProperty;
1964     Global_ = JSClassCreate(&definition);
1965
1966     Array_s = JSStringCreateWithUTF8CString("Array");
1967     cy_s = JSStringCreateWithUTF8CString("$cy");
1968     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1969     length_s = JSStringCreateWithUTF8CString("length");
1970     message_s = JSStringCreateWithUTF8CString("message");
1971     name_s = JSStringCreateWithUTF8CString("name");
1972     pop_s = JSStringCreateWithUTF8CString("pop");
1973     prototype_s = JSStringCreateWithUTF8CString("prototype");
1974     push_s = JSStringCreateWithUTF8CString("push");
1975     splice_s = JSStringCreateWithUTF8CString("splice");
1976     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1977     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1978     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1979     toString_s = JSStringCreateWithUTF8CString("toString");
1980     weak_s = JSStringCreateWithUTF8CString("weak");
1981
1982     Result_ = JSStringCreateWithUTF8CString("_");
1983
1984     for (CYHook *hook : GetHooks())
1985         if (hook->Initialize != NULL)
1986             (*hook->Initialize)();
1987 }
1988
1989 void CYThrow(JSContextRef context, JSValueRef value) {
1990     if (value != NULL)
1991         throw CYJSError(context, value);
1992 }
1993
1994 const char *CYJSError::PoolCString(CYPool &pool) const {
1995     std::set<void *> objects;
1996     // XXX: this used to be CYPoolCString
1997     return CYPoolCCYON(pool, context_, value_, objects);
1998 }
1999
2000 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2001     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2002     return value_;
2003 }
2004
2005 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2006     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2007     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2008     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2009 }
2010
2011 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2012     return CYCastJSError(context, name, message_);
2013 }
2014
2015 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2016     _assert(context != NULL);
2017
2018     CYPool pool;
2019
2020     va_list args;
2021     va_start(args, format);
2022     // XXX: there might be a beter way to think about this
2023     const char *message(pool.vsprintf(64, format, args));
2024     va_end(args);
2025
2026     value_ = CYCastJSError(context, "Error", message);
2027 }
2028
2029 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2030     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2031 }
2032
2033 static const char *CYPoolLibraryPath(CYPool &pool) {
2034     Dl_info addr;
2035     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2036     char *lib(pool.strdup(addr.dli_fname));
2037
2038     char *slash(strrchr(lib, '/'));
2039     _assert(slash != NULL);
2040     *slash = '\0';
2041
2042     slash = strrchr(lib, '/');
2043     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2044         *slash = '\0';
2045
2046     return lib;
2047 }
2048
2049 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2050     _assert(count == 1);
2051     CYPool pool;
2052
2053     const char *name(CYPoolCString(pool, context, arguments[0]));
2054     if (strchr(name, '/') == NULL && (
2055 #ifdef __APPLE__
2056         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2057         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2058 #endif
2059     false))
2060         return CYJSUndefined(context);
2061
2062     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2063     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2064
2065     CYJSString property("exports");
2066
2067     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2068     JSValueRef cache(CYGetProperty(context, modules, path));
2069
2070     JSValueRef result;
2071     if (!JSValueIsUndefined(context, cache)) {
2072         JSObjectRef module(CYCastJSObject(context, cache));
2073         result = CYGetProperty(context, module, property);
2074     } else {
2075         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2076         _assert(code.data != NULL);
2077
2078         size_t length(strlen(name));
2079         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2080             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2081             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2082             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2083             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2084         } else {
2085             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2086             CYSetProperty(context, modules, path, module);
2087
2088             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2089             CYSetProperty(context, module, property, exports);
2090
2091             std::stringstream wrap;
2092             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2093             code = CYPoolCode(pool, *wrap.rdbuf());
2094
2095             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2096             JSObjectRef function(CYCastJSObject(context, value));
2097
2098             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2099             CYCallAsFunction(context, function, NULL, 4, arguments);
2100             result = CYGetProperty(context, module, property);
2101         }
2102     }
2103
2104     return result;
2105 } CYCatch(NULL) }
2106
2107 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2108     CYPool pool;
2109     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2110     if (code.data == NULL)
2111         return false;
2112
2113     code = CYPoolCode(pool, code);
2114     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2115     return true;
2116 }
2117
2118 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2119 }
2120
2121 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2122     CYInitializeDynamic();
2123
2124     JSObjectRef global(CYGetGlobalObject(context));
2125
2126     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2127     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2128
2129 /* Cache Globals {{{ */
2130     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2131     CYSetProperty(context, cy, CYJSString("Array"), Array);
2132
2133     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2134     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2135
2136     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2137     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2138
2139     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2140     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2141
2142     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2143     CYSetProperty(context, cy, CYJSString("Error"), Error);
2144
2145     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2146     CYSetProperty(context, cy, CYJSString("Function"), Function);
2147
2148     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2149     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2150
2151     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2152     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2153
2154     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2155     CYSetProperty(context, cy, CYJSString("Number"), Number);
2156
2157     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2158     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2159
2160     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2161     CYSetProperty(context, cy, CYJSString("Object"), Object);
2162
2163     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2164     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2165
2166     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2167     CYSetProperty(context, cy, CYJSString("String"), String);
2168
2169     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2170     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2171
2172     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2173     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2174 /* }}} */
2175
2176     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2177     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2178
2179     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2180     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2181     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2182     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2183
2184     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray_, &CArray_new));
2185     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2186     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2187
2188     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2189     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2190     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2191
2192     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2193     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2194     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2195
2196     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2197     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2198
2199     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2200     CYSetProperty(context, cy, CYJSString("modules"), modules);
2201
2202     JSObjectRef all(JSObjectMake(context, All_, NULL));
2203     CYSetProperty(context, cycript, CYJSString("all"), all);
2204
2205     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2206     CYSetProperty(context, cy, CYJSString("cache"), cache);
2207     CYSetPrototype(context, cache, all);
2208
2209     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2210     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2211
2212     if (true) {
2213         JSObjectRef last(NULL), curr(global);
2214
2215         goto next; for (JSValueRef next;;) {
2216             if (JSValueIsNull(context, next))
2217                 break;
2218             last = curr;
2219             curr = CYCastJSObject(context, next);
2220           next:
2221             next = JSObjectGetPrototype(context, curr);
2222         }
2223
2224         CYSetPrototype(context, last, cache);
2225     }
2226
2227     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2228     CYSetProperty(context, cy, CYJSString("System"), System);
2229
2230     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2231
2232     CYSetProperty(context, global, CYJSString("system"), System);
2233     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2234     CYSetProperty(context, System, CYJSString("print"), &System_print);
2235
2236     CYSetProperty(context, global, CYJSString("global"), global);
2237
2238 #ifdef __APPLE__
2239     if (&JSWeakObjectMapCreate != NULL) {
2240         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2241         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2242     }
2243 #endif
2244
2245     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2246     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2247     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2248
2249     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2250
2251     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2252     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2253     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2254     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2255
2256     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2257     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2258     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2259     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2260
2261     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2262     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2263     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2264     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2265
2266     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2267     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2268
2269     for (CYHook *hook : GetHooks())
2270         if (hook->SetupContext != NULL)
2271             (*hook->SetupContext)(context);
2272
2273     CYArrayPush(context, alls, cycript);
2274
2275     CYRunScript(context, "/libcycript.cy");
2276 }
2277
2278 static JSGlobalContextRef context_;
2279
2280 _visible JSGlobalContextRef CYGetJSContext() {
2281     CYInitializeDynamic();
2282
2283     if (context_ == NULL) {
2284         context_ = JSGlobalContextCreate(Global_);
2285         CYSetupContext(context_);
2286     }
2287
2288     return context_;
2289 }
2290
2291 _visible void CYDestroyContext() {
2292     if (context_ == NULL)
2293         return;
2294     JSGlobalContextRelease(context_);
2295     context_ = NULL;
2296 }