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 cyt_s;
 182 JSStringRef length_s;
 183 JSStringRef message_s;
 184 JSStringRef name_s;
 185 JSStringRef pop_s;
 186 JSStringRef prototype_s;
 187 JSStringRef push_s;
 188 JSStringRef splice_s;
 189 JSStringRef toCYON_s;
 190 JSStringRef toJSON_s;
 191 JSStringRef toPointer_s;
 192 JSStringRef toString_s;
 193 JSStringRef weak_s;
 194
 195 static sqlite3 *database_;
 196
 197 static JSStringRef Result_;
 198
 199 void CYFinalize(JSObjectRef object) {
 200     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 201     _assert(internal->count_ != _not(unsigned));
 202     if (--internal->count_ == 0)
 203         delete internal;
 204 }
 205
 206 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 207     //_assert(false);
 208     return aggregate;
 209 }
 210
 211 JSClassRef Type_privateData::Class_;
 212
 213 struct Context :
 214     CYData
 215 {
 216     JSGlobalContextRef context_;
 217
 218     Context(JSGlobalContextRef context) :
 219         context_(context)
 220     {
 221     }
 222 };
 223
 224 struct CArray :
 225     CYOwned
 226 {
 227     Type_privateData *type_;
 228     size_t length_;
 229
 230     CArray(void *value, JSContextRef context, JSObjectRef owner, size_t length, const sig::Type &type, ffi_type *ffi) :
 231         CYOwned(value, context, owner),
 232         type_(new(*pool_) Type_privateData(type, ffi)),
 233         length_(length)
 234     {
 235     }
 236 };
 237
 238 struct CString :
 239     CYOwned
 240 {
 241     CString(char *value, JSContextRef context, JSObjectRef owner) :
 242         CYOwned(value, context, owner)
 243     {
 244     }
 245 };
 246
 247 struct Pointer :
 248     CYOwned
 249 {
 250     Type_privateData *type_;
 251
 252     Pointer(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type) :
 253         CYOwned(value, context, owner),
 254         type_(new(*pool_) Type_privateData(type))
 255     {
 256     }
 257
 258     Pointer(void *value, JSContextRef context, JSObjectRef owner, const char *encoding) :
 259         CYOwned(value, context, owner),
 260         type_(new(*pool_) Type_privateData(encoding))
 261     {
 262     }
 263 };
 264
 265 struct Struct_privateData :
 266     CYOwned
 267 {
 268     Type_privateData *type_;
 269
 270     Struct_privateData(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type, ffi_type *ffi) :
 271         CYOwned(value, context, owner),
 272         type_(new(*pool_) Type_privateData(type, ffi))
 273     {
 274     }
 275 };
 276
 277 JSObjectRef CYMakeCArray(JSContextRef context, void *data, size_t length, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 278     CArray *internal(new CArray(data, context, owner, length, type, ffi));
 279
 280     if (owner == NULL) {
 281         size_t size(ffi->size * length);
 282         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 283         memcpy(copy, internal->value_, size);
 284         internal->value_ = copy;
 285     }
 286
 287     return JSObjectMake(context, CArray_, internal);
 288 }
 289
 290 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 291     CString *internal(new CString(pointer, context, owner));
 292     if (owner == NULL)
 293         internal->value_ = internal->pool_->strdup(static_cast<const char *>(internal->value_));
 294     return JSObjectMake(context, CString_, internal);
 295 }
 296
 297 JSObjectRef CYMakeStruct(JSContextRef context, void *data, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 298     Struct_privateData *internal(new Struct_privateData(data, context, owner, type, ffi));
 299
 300     if (owner == NULL) {
 301         size_t size(ffi->size);
 302         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 303         memcpy(copy, internal->value_, size);
 304         internal->value_ = copy;
 305     }
 306
 307     return JSObjectMake(context, Struct_, internal);
 308 }
 309
 310 static void *CYCastSymbol(const char *name) {
 311     for (CYHook *hook : GetHooks())
 312         if (hook->CastSymbol != NULL)
 313             if (void *value = (*hook->CastSymbol)(name))
 314                 return value;
 315     return dlsym(RTLD_DEFAULT, name);
 316 }
 317
 318 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 319     return JSValueMakeBoolean(context, value);
 320 }
 321
 322 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 323     return JSValueMakeNumber(context, value);
 324 }
 325
 326 #define CYCastJSValue_(Type_) \
 327     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 328         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 329         return JSValueMakeNumber(context, static_cast<double>(value)); \
 330     }
 331
 332 CYCastJSValue_(signed short int)
 333 CYCastJSValue_(unsigned short int)
 334 CYCastJSValue_(signed int)
 335 CYCastJSValue_(unsigned int)
 336 CYCastJSValue_(signed long int)
 337 CYCastJSValue_(unsigned long int)
 338 CYCastJSValue_(signed long long int)
 339 CYCastJSValue_(unsigned long long int)
 340
 341 JSValueRef CYJSUndefined(JSContextRef context) {
 342     return JSValueMakeUndefined(context);
 343 }
 344
 345 double CYCastDouble(JSContextRef context, JSValueRef value) {
 346     return _jsccall(JSValueToNumber, context, value);
 347 }
 348
 349 bool CYCastBool(JSContextRef context, JSValueRef value) {
 350     return JSValueToBoolean(context, value);
 351 }
 352
 353 JSValueRef CYJSNull(JSContextRef context) {
 354     return JSValueMakeNull(context);
 355 }
 356
 357 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 358     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 359 }
 360
 361 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 362     return CYCastJSValue(context, CYJSString(value));
 363 }
 364
 365 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 366     return _jsccall(JSValueToObject, context, value);
 367 }
 368
 369 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 370     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 371 }
 372
 373 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 374     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 375 }
 376
 377 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 378     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 379 }
 380
 381 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 382     return JSValueIsStrictEqual(context, lhs, rhs);
 383 }
 384
 385 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 386     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 387 }
 388
 389 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 390     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 391 }
 392
 393 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 394     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 395     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 396 }
 397
 398 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 399     return CYArrayPush(context, array, 1, &value);
 400 }
 401
 402 template <size_t Size_>
 403 class CYArrayBuilder {
 404   private:
 405     JSContextRef context_;
 406     JSObjectRef &array_;
 407     size_t size_;
 408     JSValueRef values_[Size_];
 409
 410     void flush() {
 411         if (array_ == NULL)
 412             array_ = CYObjectMakeArray(context_, size_, values_);
 413         else
 414             CYArrayPush(context_, array_, size_, values_);
 415     }
 416
 417   public:
 418     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 419         context_(context),
 420         array_(array),
 421         size_(0)
 422     {
 423     }
 424
 425     ~CYArrayBuilder() {
 426         flush();
 427     }
 428
 429     void operator ()(JSValueRef value) {
 430         if (size_ == Size_) {
 431             flush();
 432             size_ = 0;
 433         }
 434
 435         values_[size_++] = value;
 436     }
 437 };
 438
 439 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 440     FILE *file(stdout);
 441
 442     if (count == 0)
 443         fputc('\n', file);
 444     else {
 445         CYPool pool;
 446         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 447         fwrite(string.data, string.size, 1, file);
 448     }
 449
 450     fflush(file);
 451     return CYJSUndefined(context);
 452 } CYCatch(NULL) }
 453
 454 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 455
 456 _visible void CYGarbageCollect(JSContextRef context) {
 457     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 458 }
 459
 460 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 461     CYPool pool;
 462     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 463     std::stringbuf value(std::string(before.data, before.size));
 464     CYUTF8String after(CYPoolCode(pool, value));
 465     return CYCastJSValue(context, CYJSString(after));
 466 } CYCatch_(NULL, "SyntaxError") }
 467
 468 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 469     CYGarbageCollect(context);
 470     return CYJSUndefined(context);
 471 } CYCatch(NULL) }
 472
 473 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 474     switch (JSType type = JSValueGetType(context, value)) {
 475         case kJSTypeUndefined:
 476             return "undefined";
 477         case kJSTypeNull:
 478             return "null";
 479         case kJSTypeBoolean:
 480             return CYCastBool(context, value) ? "true" : "false";
 481
 482         case kJSTypeNumber: {
 483             std::ostringstream str;
 484             CYNumerify(str, CYCastDouble(context, value));
 485             std::string value(str.str());
 486             return pool.strmemdup(value.c_str(), value.size());
 487         } break;
 488
 489         case kJSTypeString: {
 490             std::ostringstream str;
 491             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 492             CYStringify(str, string.data, string.size);
 493             std::string value(str.str());
 494             return pool.strmemdup(value.c_str(), value.size());
 495         } break;
 496
 497         case kJSTypeObject:
 498             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 499         default:
 500             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 501     }
 502 } CYCatch(NULL) }
 503
 504 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 505     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 506 }
 507
 508 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 509     if (objects != NULL)
 510         return CYPoolCCYON(pool, context, value, *objects);
 511     else {
 512         std::set<void *> objects;
 513         return CYPoolCCYON(pool, context, value, objects);
 514     }
 515 }
 516
 517 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 518     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 519     if (CYIsCallable(context, toCYON)) {
 520         // XXX: this needs to be abstracted behind some kind of function
 521         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 522         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 523         _assert(value != NULL);
 524         return CYPoolCString(pool, context, value);
 525     }
 526
 527     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 528     if (CYIsCallable(context, toJSON)) {
 529         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 530         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 531     }
 532
 533     if (JSObjectIsFunction(context, object)) {
 534         JSValueRef toString(CYGetProperty(context, object, toString_s));
 535         if (CYIsCallable(context, toString)) {
 536             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 537             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 538             _assert(value != NULL);
 539             return CYPoolCString(pool, context, value);
 540         }
 541     }
 542
 543     _assert(objects.insert(object).second);
 544
 545     std::ostringstream str;
 546
 547     str << '{';
 548
 549     // XXX: this is, sadly, going to leak
 550     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 551
 552     bool comma(false);
 553
 554     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 555         if (comma)
 556             str << ',';
 557         else
 558             comma = true;
 559
 560         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 561         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 562
 563         if (CYIsKey(string))
 564             str << string.data;
 565         else
 566             CYStringify(str, string.data, string.size);
 567
 568         str << ':';
 569
 570         try {
 571             JSValueRef value(CYGetProperty(context, object, name));
 572             str << CYPoolCCYON(pool, context, value, objects);
 573         } catch (const CYException &error) {
 574             str << "@error";
 575         }
 576     }
 577
 578     JSPropertyNameArrayRelease(names);
 579
 580     str << '}';
 581
 582     std::string string(str.str());
 583     return pool.strmemdup(string.c_str(), string.size());
 584 }
 585
 586 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 587     if (count == 0)
 588         return NULL;
 589     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 590 }
 591
 592 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 593     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 594     // XXX: this is horribly inefficient
 595     std::set<void *> backup;
 596     if (objects == NULL)
 597         objects = &backup;
 598
 599     CYPool pool;
 600     std::ostringstream str;
 601
 602     str << '[';
 603
 604     JSValueRef length(CYGetProperty(context, _this, length_s));
 605     bool comma(false);
 606
 607     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 608         if (comma)
 609             str << ',';
 610         else
 611             comma = true;
 612
 613         try {
 614             JSValueRef value(CYGetProperty(context, _this, index));
 615             if (!JSValueIsUndefined(context, value))
 616                 str << CYPoolCCYON(pool, context, value, *objects);
 617             else {
 618                 str << ',';
 619                 comma = false;
 620             }
 621         } catch (const CYException &error) {
 622             str << "@error";
 623         }
 624     }
 625
 626     str << ']';
 627
 628     std::string value(str.str());
 629     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 630 } CYCatch(NULL) }
 631
 632 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 633     CYPool pool;
 634     std::ostringstream str;
 635
 636     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 637     CYStringify(str, string.data, string.size);
 638
 639     std::string value(str.str());
 640     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 641 } CYCatch(NULL) }
 642
 643 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 644     Pointer *internal(new Pointer(pointer, context, owner, type));
 645     return JSObjectMake(context, Pointer_, internal);
 646 }
 647
 648 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const char *encoding, JSObjectRef owner) {
 649     Pointer *internal(new Pointer(pointer, context, owner, encoding));
 650     return JSObjectMake(context, Pointer_, internal);
 651 }
 652
 653 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), bool variadic, const sig::Signature &signature) {
 654     return JSObjectMake(context, Functor_, new cy::Functor(function, variadic, signature));
 655 }
 656
 657 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 658     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 659     if (function == NULL)
 660         return NULL;
 661
 662     cy::Functor *internal(new cy::Functor(function, encoding));
 663     ++internal->count_;
 664     return JSObjectMake(context, Functor_, internal);
 665 }
 666
 667 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 668     return CYGetOffset(CYPoolCString(pool, context, value), index);
 669 }
 670
 671 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 672     if (value == NULL)
 673         return NULL;
 674     else switch (JSValueGetType(context, value)) {
 675         case kJSTypeNull:
 676             return NULL;
 677         case kJSTypeObject: {
 678             JSObjectRef object((JSObjectRef) value);
 679             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 680                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 681                 return internal->value_;
 682             }
 683             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 684             if (CYIsCallable(context, toPointer)) {
 685                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 686                 _assert(value != NULL);
 687                 return CYCastPointer_(context, value, guess);
 688             }
 689         } default:
 690             if (guess != NULL)
 691                 *guess = true;
 692         case kJSTypeNumber:
 693             double number(CYCastDouble(context, value));
 694             if (!std::isnan(number))
 695                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 696             if (guess == NULL)
 697                 throw CYJSError(context, "cannot convert value to pointer");
 698             else {
 699                 *guess = true;
 700                 return NULL;
 701             }
 702     }
 703 }
 704
 705 namespace sig {
 706
 707 // XXX: this is somehow not quite a template :/
 708
 709 template <>
 710 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 711     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 712 }
 713
 714 #define CYPoolFFI_(Type_) \
 715 template <> \
 716 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 717     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 718 }
 719
 720 CYPoolFFI_(char)
 721 CYPoolFFI_(double)
 722 CYPoolFFI_(float)
 723 CYPoolFFI_(signed char)
 724 CYPoolFFI_(signed int)
 725 CYPoolFFI_(signed long int)
 726 CYPoolFFI_(signed long long int)
 727 CYPoolFFI_(signed short int)
 728 CYPoolFFI_(unsigned char)
 729 CYPoolFFI_(unsigned int)
 730 CYPoolFFI_(unsigned long int)
 731 CYPoolFFI_(unsigned long long int)
 732 CYPoolFFI_(unsigned short int)
 733
 734 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 735     _assert(false);
 736 }
 737
 738 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 739     _assert(false);
 740 }
 741
 742 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 743     bool guess(false);
 744     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 745     if (guess && pool != NULL)
 746         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 747 }
 748
 749 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 750     _assert(false);
 751 }
 752
 753 static void CYArrayCopy(CYPool *pool, JSContextRef context, uint8_t *base, size_t length, const sig::Type &type, ffi_type *ffi, JSValueRef value, JSObjectRef object) {
 754     for (size_t index(0); index != length; ++index) {
 755         JSValueRef rhs;
 756         if (object == NULL)
 757             rhs = value;
 758         else {
 759             rhs = CYGetProperty(context, object, index);
 760             if (JSValueIsUndefined(context, rhs))
 761                 throw CYJSError(context, "unable to extract array value");
 762         }
 763
 764         type.PoolFFI(pool, context, ffi, base, rhs);
 765         base += ffi->size;
 766     }
 767 }
 768
 769 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 770     bool guess(false);
 771     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value, &guess);
 772     if (!guess || pool == NULL || !JSValueIsObject(context, value))
 773         return;
 774     JSObjectRef object(CYCastJSObject(context, value));
 775     if (CYHasProperty(context, object, length_s)) {
 776         size_t length(CYArrayLength(context, object));
 777         ffi_type *element(type.GetFFI(*pool));
 778         size_t size(element->size * length);
 779         uint8_t *base(pool->malloc<uint8_t>(size, element->alignment));
 780         CYArrayCopy(pool, context, base, length, type, element, value, object);
 781         *reinterpret_cast<void **>(data) = base;
 782     }
 783 }
 784
 785 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 786     if (size == 0)
 787         return;
 788     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 789     JSObjectRef object(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 790     CYArrayCopy(pool, context, base, size, type, ffi->elements[0], value, object);
 791 }
 792
 793 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 794     _assert(!overlap);
 795
 796     size_t offset(0);
 797     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 798     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 799     for (size_t index(0); index != signature.count; ++index) {
 800         sig::Element *element(&signature.elements[index]);
 801         ffi_type *field(ffi->elements[index]);
 802
 803         JSValueRef rhs;
 804         if (aggregate == NULL)
 805             rhs = value;
 806         else {
 807             rhs = CYGetProperty(context, aggregate, index);
 808             if (JSValueIsUndefined(context, rhs)) {
 809                 if (element->name != NULL)
 810                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 811                 else
 812                     goto undefined;
 813                 if (JSValueIsUndefined(context, rhs)) undefined:
 814                     throw CYJSError(context, "unable to extract structure value");
 815             }
 816         }
 817
 818         element->type->PoolFFI(pool, context, field, base + offset, rhs);
 819         offset += field->size;
 820         CYAlign(offset, field->alignment);
 821     }
 822 }
 823
 824 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 825     _assert(false);
 826 }
 827
 828 #define CYFromFFI_(Type_) \
 829 template <> \
 830 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 831     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 832 }
 833
 834 CYFromFFI_(bool)
 835 CYFromFFI_(char)
 836 CYFromFFI_(double)
 837 CYFromFFI_(float)
 838 CYFromFFI_(signed char)
 839 CYFromFFI_(signed int)
 840 CYFromFFI_(signed long int)
 841 CYFromFFI_(signed long long int)
 842 CYFromFFI_(signed short int)
 843 CYFromFFI_(unsigned char)
 844 CYFromFFI_(unsigned int)
 845 CYFromFFI_(unsigned long int)
 846 CYFromFFI_(unsigned long long int)
 847 CYFromFFI_(unsigned short int)
 848
 849 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 850     return CYJSUndefined(context);
 851 }
 852
 853 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 854     _assert(false);
 855 }
 856
 857 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 858     if (char *value = *reinterpret_cast<char **>(data))
 859         return CYMakeCString(context, value, owner);
 860     return CYJSNull(context);
 861 }
 862
 863 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 864     _assert(false);
 865 }
 866
 867 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 868     if (void *value = *reinterpret_cast<void **>(data))
 869         return CYMakePointer(context, value, type, NULL, owner);
 870     return CYJSNull(context);
 871 }
 872
 873 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 874     return CYMakeCArray(context, data, size, type, ffi->elements[0], owner);
 875 }
 876
 877 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 878     return CYMakeStruct(context, data, *this, ffi, owner);
 879 }
 880
 881 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 882     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), variadic, signature);
 883 }
 884
 885 }
 886
 887 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 888     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 889
 890     JSContextRef context(internal->context_);
 891
 892     size_t count(internal->cif_.nargs);
 893     JSValueRef values[count];
 894
 895     for (size_t index(0); index != count; ++index)
 896         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 897
 898     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 899     if (internal->cif_.rtype != &ffi_type_void)
 900         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 901 }
 902
 903 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 904     return CYCallAsFunction(context, function, NULL, count, values);
 905 }
 906
 907 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 908 static void CYFreeFunctor(void *data) {
 909     ffi_closure_free(data);
 910 }
 911 #else
 912 static void CYFreeFunctor(void *data) {
 913     _syscall(munmap(data, sizeof(ffi_closure)));
 914 }
 915 #endif
 916
 917 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 918     // XXX: in case of exceptions this will leak
 919     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 920
 921 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 922     void *executable;
 923     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 924
 925     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 926     _assert(status == FFI_OK);
 927
 928     internal->pool_->atexit(&CYFreeFunctor, writable);
 929     internal->value_ = executable;
 930 #else
 931     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 932         NULL, sizeof(ffi_closure),
 933         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 934         -1, 0
 935     )));
 936
 937     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 938     _assert(status == FFI_OK);
 939
 940     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 941
 942     internal->pool_->atexit(&CYFreeFunctor, closure);
 943     internal->value_ = closure;
 944 #endif
 945
 946     return internal;
 947 }
 948
 949 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 950     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 951     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 952     // XXX: see above notes about needing to leak
 953     JSValueProtect(CYGetJSContext(context), object);
 954     return object;
 955 }
 956
 957 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 958     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 959 }
 960
 961 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 962     return CYCastJSObject(context, CYGetCachedValue(context, name));
 963 }
 964
 965 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, bool variadic, const sig::Signature &signature) {
 966     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 967
 968     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 969     if (function) {
 970         JSObjectRef function(CYCastJSObject(context, value));
 971         return CYMakeFunctor(context, function, signature);
 972     } else {
 973         void (*function)()(CYCastPointer<void (*)()>(context, value));
 974         return CYMakeFunctor(context, function, variadic, signature);
 975     }
 976 }
 977
 978 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 979     CYPool pool;
 980     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 981     char *string(static_cast<char *>(internal->value_));
 982
 983     ssize_t offset;
 984     if (!CYGetOffset(pool, context, property, offset))
 985         return NULL;
 986
 987     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 988 } CYCatch(NULL) }
 989
 990 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 991     CYPool pool;
 992     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 993     char *string(static_cast<char *>(internal->value_));
 994
 995     ssize_t offset;
 996     if (!CYGetOffset(pool, context, property, offset))
 997         return false;
 998
 999     const char *data(CYPoolCString(pool, context, value));
1000     string[offset] = *data;
1001     return true;
1002 } CYCatch(false) }
1003
1004 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
1005     Type_privateData *typical(internal->type_);
1006     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1007     if (type == NULL)
1008         return false;
1009
1010     const char *name(CYPoolCString(pool, context, property));
1011     size_t length(strlen(name));
1012     double number(CYCastDouble(name, length));
1013
1014     size_t count(type->signature.count);
1015
1016     if (std::isnan(number)) {
1017         if (property == NULL)
1018             return false;
1019
1020         sig::Element *elements(type->signature.elements);
1021
1022         for (size_t local(0); local != count; ++local) {
1023             sig::Element *element(&elements[local]);
1024             if (element->name != NULL && strcmp(name, element->name) == 0) {
1025                 index = local;
1026                 goto base;
1027             }
1028         }
1029
1030         return false;
1031     } else {
1032         index = static_cast<ssize_t>(number);
1033         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1034             return false;
1035     }
1036
1037   base:
1038     ffi_type **elements(typical->GetFFI()->elements);
1039
1040     size_t offset(0);
1041     for (ssize_t local(0); local != index; ++local) {
1042         offset += elements[local]->size;
1043         CYAlign(offset, elements[local + 1]->alignment);
1044     }
1045
1046     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1047     return true;
1048 }
1049
1050 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1051     ssize_t offset;
1052     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1053         offset = 0;
1054     else if (!CYGetOffset(pool, context, property, offset))
1055         return NULL;
1056     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1057 }
1058
1059 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1060     ffi_type *ffi(typical->GetFFI());
1061     void *base(Offset_(pool, context, property, data, ffi));
1062     if (base == NULL)
1063         return NULL;
1064     return typical->type_->FromFFI(context, ffi, base, false, owner);
1065 }
1066
1067 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1068     ffi_type *ffi(typical->GetFFI());
1069     void *base(Offset_(pool, context, property, data, ffi));
1070     if (base == NULL)
1071         return false;
1072
1073     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1074     return true;
1075 }
1076
1077 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1078     CYPool pool;
1079     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1080     if (JSStringIsEqual(property, length_s))
1081         return CYCastJSValue(context, internal->length_);
1082     Type_privateData *typical(internal->type_);
1083     JSObjectRef owner(internal->GetOwner() ?: object);
1084     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1085 } CYCatch(NULL) }
1086
1087 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1088     CYPool pool;
1089     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1090     Type_privateData *typical(internal->type_);
1091     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1092 } CYCatch(false) }
1093
1094 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1095     CYPool pool;
1096     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1097
1098     Type_privateData *typical(internal->type_);
1099
1100     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1101         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1102             return NULL;
1103         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->variadic, function->signature);
1104     }
1105
1106     JSObjectRef owner(internal->GetOwner() ?: object);
1107     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1108 } CYCatch(NULL) }
1109
1110 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1111     CYPool pool;
1112     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1113     Type_privateData *typical(internal->type_);
1114     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1115 } CYCatch(false) }
1116
1117 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1118     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1119     Type_privateData *typical(internal->type_);
1120     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1121 } CYCatch(NULL) }
1122
1123 static JSValueRef Struct_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1124     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1125     return CYMakeType(context, *internal->type_->type_);
1126 } CYCatch(NULL) }
1127
1128 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1129     CYPool pool;
1130     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1131     Type_privateData *typical(internal->type_);
1132     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1133
1134     ssize_t index;
1135     uint8_t *base;
1136
1137     if (!Index_(pool, context, internal, property, index, base))
1138         return NULL;
1139
1140     JSObjectRef owner(internal->GetOwner() ?: object);
1141
1142     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1143 } CYCatch(NULL) }
1144
1145 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1146     CYPool pool;
1147     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1148     Type_privateData *typical(internal->type_);
1149     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1150
1151     ssize_t index;
1152     uint8_t *base;
1153
1154     if (!Index_(pool, context, internal, property, index, base))
1155         return false;
1156
1157     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1158     return true;
1159 } CYCatch(false) }
1160
1161 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1162     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1163     Type_privateData *typical(internal->type_);
1164     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1165
1166     if (type == NULL)
1167         return;
1168
1169     size_t count(type->signature.count);
1170     sig::Element *elements(type->signature.elements);
1171
1172     char number[32];
1173
1174     for (size_t index(0); index != count; ++index) {
1175         const char *name;
1176         name = elements[index].name;
1177
1178         if (name == NULL) {
1179             sprintf(number, "%zu", index);
1180             name = number;
1181         }
1182
1183         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1184     }
1185 }
1186
1187 static sig::Void Void_;
1188 static sig::Pointer PointerToVoid_(Void_);
1189
1190 static sig::Type *CYGetType(CYPool &pool, JSContextRef context, JSValueRef value) {
1191     if (JSValueIsNull(context, value))
1192         return &PointerToVoid_;
1193     JSObjectRef object(CYCastJSObject(context, value));
1194     JSObjectRef type(CYCastJSObject(context, CYGetProperty(context, object, cyt_s)));
1195     _assert(JSValueIsObjectOfClass(context, type, Type_privateData::Class_));
1196     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(type)));
1197     return internal->type_;
1198 }
1199
1200 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1201     ffi_call(cif, function, value, values);
1202 }
1203
1204 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, bool variadic, const sig::Signature &signature, ffi_cif *cif, void (*function)()) {
1205     size_t have(setups + count);
1206     size_t need(signature.count - 1);
1207
1208     if (have < need)
1209         throw CYJSError(context, "insufficient number of arguments to ffi function");
1210
1211     ffi_cif corrected;
1212     sig::Element *elements(signature.elements);
1213
1214     if (have > need) {
1215         if (!variadic)
1216             throw CYJSError(context, "exorbitant number of arguments to ffi function");
1217
1218         elements = new (pool) sig::Element[have + 1];
1219         memcpy(elements, signature.elements, sizeof(sig::Element) * (need + 1));
1220
1221         for (size_t index(need); index != have; ++index) {
1222             sig::Element &element(elements[index + 1]);
1223             element.name = NULL;
1224             element.offset = _not(size_t);
1225             element.type = CYGetType(pool, context, arguments[index - setups]);
1226         }
1227
1228         sig::Signature extended;
1229         extended.elements = elements;
1230         extended.count = have + 1;
1231         sig::sig_ffi_cif(pool, signature.count, extended, &corrected);
1232         cif = &corrected;
1233     }
1234
1235     void *values[have];
1236     memcpy(values, setup, sizeof(void *) * setups);
1237
1238     for (size_t index(setups); index != have; ++index) {
1239         sig::Element &element(elements[index + 1]);
1240         ffi_type *ffi(cif->arg_types[index]);
1241         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1242         element.type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1243     }
1244
1245     uint8_t value[cif->rtype->size];
1246
1247     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1248     // XXX: this only supports one hook, but it is a bad idea anyway
1249     for (CYHook *hook : GetHooks())
1250         if (hook->CallFunction != NULL)
1251             call = hook->CallFunction;
1252
1253     call(pool, context, cif, function, value, values);
1254     return signature.elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1255 }
1256
1257 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1258     CYPool pool;
1259     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1260     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, internal->variadic_, internal->signature_, &internal->cif_, internal->GetValue());
1261 } CYCatch(NULL) }
1262
1263 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1264     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1265     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1266         throw CYJSError(context, "cannot call a pointer to non-function");
1267     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1268     return CYCallAsFunction(context, functor, _this, count, arguments);
1269 } CYCatch(NULL) }
1270
1271 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1272     Type_privateData *internal(new Type_privateData(type));
1273     return JSObjectMake(context, Type_privateData::Class_, internal);
1274 }
1275
1276 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1277     sqlite3_stmt *statement;
1278
1279     _sqlcall(sqlite3_prepare(database_,
1280         "select "
1281             "\"cache\".\"code\", "
1282             "\"cache\".\"flags\" "
1283         "from \"cache\" "
1284         "where"
1285             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1286             " \"cache\".\"name\" = ?"
1287         " limit 1"
1288     , -1, &statement, NULL));
1289
1290     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1291
1292     bool success;
1293     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1294         success = false;
1295     else {
1296         success = true;
1297         code = sqlite3_column_pooled(pool, statement, 0);
1298         flags = sqlite3_column_int(statement, 1);
1299     }
1300
1301     _sqlcall(sqlite3_finalize(statement));
1302     return success;
1303 }
1304
1305 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1306     if (JSStringIsEqualToUTF8CString(property, "errno"))
1307         return true;
1308
1309     JSObjectRef global(CYGetGlobalObject(context));
1310     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1311     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1312
1313     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1314         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1315             if (CYHasProperty(context, space, property))
1316                 return true;
1317
1318     CYPool pool;
1319     const char *code;
1320     unsigned flags;
1321     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1322         return true;
1323
1324     return false;
1325 }
1326
1327 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1328     if (JSStringIsEqualToUTF8CString(property, "errno"))
1329         return CYCastJSValue(context, errno);
1330
1331     JSObjectRef global(CYGetGlobalObject(context));
1332     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1333     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1334
1335     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1336         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1337             if (JSValueRef value = CYGetProperty(context, space, property))
1338                 if (!JSValueIsUndefined(context, value))
1339                     return value;
1340
1341     CYPool pool;
1342     const char *code;
1343     unsigned flags;
1344     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1345         CYUTF8String parsed;
1346
1347         try {
1348             parsed = CYPoolCode(pool, code);
1349         } catch (const CYException &error) {
1350             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1351         }
1352
1353         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1354
1355         if (flags == 0) {
1356             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1357             CYSetProperty(context, cache, property, result);
1358         }
1359
1360         return result;
1361     }
1362
1363     return NULL;
1364 } CYCatch(NULL) }
1365
1366 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1367     _assert(count == 1);
1368     CYPool pool;
1369     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1370
1371     JSObjectRef array(NULL);
1372
1373     {
1374     CYArrayBuilder<1024> values(context, array);
1375
1376     sqlite3_stmt *statement;
1377
1378     if (prefix.size == 0)
1379         _sqlcall(sqlite3_prepare(database_,
1380             "select "
1381                 "\"cache\".\"name\" "
1382             "from \"cache\" "
1383             "where"
1384                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1385         , -1, &statement, NULL));
1386     else {
1387         _sqlcall(sqlite3_prepare(database_,
1388             "select "
1389                 "\"cache\".\"name\" "
1390             "from \"cache\" "
1391             "where"
1392                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1393                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1394         , -1, &statement, NULL));
1395
1396         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1397
1398         char *after(pool.strndup(prefix.data, prefix.size));
1399         ++after[prefix.size - 1];
1400         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1401     }
1402
1403     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1404         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1405
1406     _sqlcall(sqlite3_finalize(statement));
1407     }
1408
1409     return array;
1410 } CYCatch(NULL) }
1411
1412 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1413     JSObjectRef global(CYGetGlobalObject(context));
1414     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1415     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1416
1417     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1418         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1419             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1420             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1421                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1422             JSPropertyNameArrayRelease(subset);
1423         }
1424 }
1425
1426 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1427     _assert(false);
1428 } CYCatch(NULL) }
1429
1430 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1431     _assert(false);
1432 } CYCatch(NULL) }
1433
1434 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1435     _assert(false);
1436 } CYCatch(NULL) }
1437
1438 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1439     CYPool pool;
1440
1441     if (false) {
1442     } else if (count == 1) {
1443         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1444         sig::Signature signature;
1445         sig::Parse(pool, &signature, encoding, &Structor_);
1446         return CYMakeType(context, *signature.elements[0].type);
1447     } else if (count == 2) {
1448         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1449         size_t count(CYArrayLength(context, types));
1450
1451         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1452
1453         sig::Aggregate type(false);
1454         type.signature.elements = new(pool) sig::Element[count];
1455         type.signature.count = count;
1456
1457         for (size_t i(0); i != count; ++i) {
1458             sig::Element &element(type.signature.elements[i]);
1459             element.offset = _not(size_t);
1460
1461             JSValueRef name(CYArrayGet(context, names, i));
1462             if (JSValueIsUndefined(context, name))
1463                 element.name = NULL;
1464             else
1465                 element.name = CYPoolCString(pool, context, name);
1466
1467             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1468             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1469             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1470             element.type = internal->type_;
1471         }
1472
1473         return CYMakeType(context, type);
1474     } else {
1475         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1476     }
1477 } CYCatch(NULL) }
1478
1479 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1480     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1481
1482     CYPool pool;
1483
1484     type.signature.elements = new(pool) sig::Element[1 + count];
1485     type.signature.count = 1 + count;
1486
1487     type.signature.elements[0].name = NULL;
1488     type.signature.elements[0].type = internal->type_;
1489     type.signature.elements[0].offset = _not(size_t);
1490
1491     for (size_t i(0); i != count; ++i) {
1492         sig::Element &element(type.signature.elements[i + 1]);
1493         element.name = NULL;
1494         element.offset = _not(size_t);
1495
1496         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1497         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1498         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1499
1500         element.type = internal->type_;
1501     }
1502
1503     return CYMakeType(context, type);
1504 } CYCatch(NULL) }
1505
1506 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1507     if (count != 1)
1508         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1509     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1510
1511     CYPool pool;
1512     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1513     if (index == _not(size_t))
1514         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1515
1516     sig::Array type(*internal->type_, index);
1517     return CYMakeType(context, type);
1518 } CYCatch(NULL) }
1519
1520 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1521     sig::Block type;
1522     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1523 }
1524
1525 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1526     if (count != 0)
1527         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1528     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1529
1530     CYPool pool;
1531     sig::Type *type(internal->type_->Copy(pool));
1532     type->flags |= JOC_TYPE_CONST;
1533     return CYMakeType(context, *type);
1534 } CYCatch(NULL) }
1535
1536 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1537     bool variadic(count != 0 && JSValueIsNull(context, arguments[count - 1]));
1538     sig::Function type(variadic);
1539     return Type_callAsFunction_$With(context, object, _this, variadic ? count - 1 : count, arguments, type, exception);
1540 }
1541
1542 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1543     if (count != 0)
1544         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1545     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1546
1547     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1548         return CYMakeType(context, sig::String());
1549     else
1550         return CYMakeType(context, sig::Pointer(*internal->type_));
1551 } CYCatch(NULL) }
1552
1553 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1554     if (count != 1)
1555         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1556     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1557
1558     CYPool pool;
1559     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1560 } CYCatch(NULL) }
1561
1562 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1563     if (count != 1)
1564         throw CYJSError(context, "incorrect number of arguments to type cast function");
1565     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1566
1567     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1568         return CYMakeFunctor(context, arguments[0], function->variadic, function->signature);
1569
1570     CYPool pool;
1571     sig::Type *type(internal->type_);
1572     ffi_type *ffi(internal->GetFFI());
1573
1574     void *data(pool.malloc<void>(ffi->size, ffi->alignment));
1575     type->PoolFFI(&pool, context, ffi, data, arguments[0]);
1576     JSValueRef value(type->FromFFI(context, ffi, data));
1577
1578     if (JSValueGetType(context, value) == kJSTypeNumber) {
1579         JSObjectRef typed(_jsccall(JSObjectCallAsConstructor, context, CYGetCachedObject(context, CYJSString("Number")), 1, &value));
1580         CYSetProperty(context, typed, cyt_s, object, kJSPropertyAttributeDontEnum);
1581         value = typed;
1582     }
1583
1584     return value;
1585 } CYCatch(NULL) }
1586
1587 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1588     if (count != 0)
1589         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1590     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1591
1592     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1593     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1594     ffi_type *ffi(internal->GetFFI());
1595     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1596     memset(value->value_, 0, ffi->size);
1597     return pointer;
1598 } CYCatch(NULL) }
1599
1600 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1601     if (count != 2)
1602         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1603     CYPool pool;
1604     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1605     sig::Signature signature;
1606     sig::Parse(pool, &signature, encoding, &Structor_);
1607     return CYMakeFunctor(context, arguments[0], false, signature);
1608 } CYCatch(NULL) }
1609
1610 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1611     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1612     JSObjectRef owner(internal->GetOwner() ?: object);
1613     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1614 } CYCatch(NULL) }
1615
1616 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1617     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1618     JSObjectRef owner(internal->GetOwner() ?: object);
1619     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1620 } CYCatch(NULL) }
1621
1622 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1623     CYPool pool;
1624     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1625
1626     sig::Function type(internal->variadic_);
1627     sig::Copy(pool, type.signature, internal->signature_);
1628
1629     return CYMakePointer(context, internal->value_, type, NULL, NULL);
1630 } CYCatch(NULL) }
1631
1632 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1633     return _this;
1634 } CYCatch(NULL) }
1635
1636 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1637     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1638     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1639 } CYCatch(NULL) }
1640
1641 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1642     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1643 }
1644
1645 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1646     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1647     std::ostringstream str;
1648     Dl_info info;
1649     if (internal->value_ == NULL)
1650         str << "NULL";
1651     else if (dladdr(internal->value_, &info) == 0)
1652         str << internal->value_;
1653     else {
1654         str << info.dli_sname;
1655         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1656         if (offset != 0)
1657             str << "+0x" << std::hex << offset;
1658     }
1659     std::string value(str.str());
1660     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1661 } CYCatch(NULL) }
1662
1663 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1664     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1665
1666     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1667
1668     try {
1669         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1670         if (!JSValueIsUndefined(context, value)) {
1671             CYPool pool;
1672             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1673         }
1674     } catch (const CYException &e) {
1675         // XXX: it might be interesting to include this error
1676     }
1677
1678     CYLocalPool pool;
1679     std::ostringstream str;
1680
1681     sig::Pointer type(*internal->type_->type_);
1682
1683     CYOptions options;
1684     CYOutput output(*str.rdbuf(), options);
1685     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1686
1687     str << "(" << internal->value_ << ")";
1688     std::string value(str.str());
1689     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1690 } CYCatch(NULL) }
1691
1692 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1693     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1694     char *string(static_cast<char *>(internal->value_));
1695     return CYCastJSValue(context, strlen(string));
1696 } CYCatch(NULL) }
1697
1698 static JSValueRef CString_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1699     return CYMakeType(context, sig::String());
1700 } CYCatch(NULL) }
1701
1702 static JSValueRef CArray_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1703     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1704     sig::Array type(*internal->type_->type_, internal->length_);
1705     return CYMakeType(context, type);
1706 } CYCatch(NULL) }
1707
1708 static JSValueRef Pointer_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1709     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1710     sig::Pointer type(*internal->type_->type_);
1711     return CYMakeType(context, type);
1712 } CYCatch(NULL) }
1713
1714 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1715     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1716     const char *string(static_cast<const char *>(internal->value_));
1717     std::ostringstream str;
1718     if (string == NULL)
1719         str << "NULL";
1720     else {
1721         str << "&";
1722         CYStringify(str, string, strlen(string), true);
1723     }
1724     std::string value(str.str());
1725     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1726 } CYCatch(NULL) }
1727
1728 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1729     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1730     const char *string(static_cast<const char *>(internal->value_));
1731     return CYCastJSValue(context, string);
1732 } CYCatch(NULL) }
1733
1734 static JSValueRef Functor_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1735     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1736     CYPool pool;
1737     sig::Function type(internal->variadic_);
1738     sig::Copy(pool, type.signature, internal->signature_);
1739     return CYMakeType(context, type);
1740 } CYCatch(NULL) }
1741
1742 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1743     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1744     return CYCastJSValue(context, internal->GetFFI()->alignment);
1745 } CYCatch(NULL) }
1746
1747 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1748     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1749     return CYCastJSValue(context, internal->type_->GetName());
1750 } CYCatch(NULL) }
1751
1752 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1753     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1754     return CYCastJSValue(context, internal->GetFFI()->size);
1755 } CYCatch(NULL) }
1756
1757 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1758     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1759     CYPool pool;
1760     const char *type(sig::Unparse(pool, internal->type_));
1761     return CYCastJSValue(context, CYJSString(type));
1762 } CYCatch(NULL) }
1763
1764 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1765     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1766     CYLocalPool pool;
1767     std::stringbuf out;
1768     CYOptions options;
1769     CYOutput output(out, options);
1770     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_)))->Output(output, CYNoFlags);
1771     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1772 } CYCatch(NULL) }
1773
1774 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1775     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1776 }
1777
1778 static JSStaticFunction All_staticFunctions[2] = {
1779     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1780     {NULL, NULL, 0}
1781 };
1782
1783 static JSStaticFunction CArray_staticFunctions[4] = {
1784     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1785     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1786     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1787     {NULL, NULL, 0}
1788 };
1789
1790 static JSStaticValue CArray_staticValues[2] = {
1791     {"$cyt", &CArray_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1792     {NULL, NULL, NULL, 0}
1793 };
1794
1795 static JSStaticFunction CString_staticFunctions[6] = {
1796     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1797     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1798     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1799     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1800     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1801     {NULL, NULL, 0}
1802 };
1803
1804 static JSStaticValue CString_staticValues[3] = {
1805     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1806     {"$cyt", &CString_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1807     {NULL, NULL, NULL, 0}
1808 };
1809
1810 static JSStaticFunction Pointer_staticFunctions[5] = {
1811     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1812     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1813     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1814     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1815     {NULL, NULL, 0}
1816 };
1817
1818 static JSStaticValue Pointer_staticValues[2] = {
1819     {"$cyt", &Pointer_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1820     {NULL, NULL, NULL, 0}
1821 };
1822
1823 static JSStaticFunction Struct_staticFunctions[2] = {
1824     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1825     {NULL, NULL, 0}
1826 };
1827
1828 static JSStaticValue Struct_staticValues[2] = {
1829     {"$cyt", &Struct_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1830     {NULL, NULL, NULL, 0}
1831 };
1832
1833 static JSStaticFunction Functor_staticFunctions[5] = {
1834     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1835     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1836     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1837     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1838     {NULL, NULL, 0}
1839 };
1840
1841 namespace cy {
1842     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1843 }
1844
1845 static JSStaticValue Functor_staticValues[2] = {
1846     {"$cyt", &Functor_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1847     {NULL, NULL, NULL, 0}
1848 };
1849
1850 namespace cy {
1851     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1852 }
1853
1854 static JSStaticValue Type_staticValues[4] = {
1855     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1856     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1857     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1858     {NULL, NULL, NULL, 0}
1859 };
1860
1861 static JSStaticFunction Type_staticFunctions[10] = {
1862     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1863     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1864     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1865     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1866     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1867     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1868     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1869     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1870     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1871     {NULL, NULL, 0}
1872 };
1873
1874 _visible void CYSetArgs(int argc, const char *argv[]) {
1875     JSContextRef context(CYGetJSContext());
1876     JSValueRef args[argc];
1877     for (int i(0); i != argc; ++i)
1878         args[i] = CYCastJSValue(context, argv[i]);
1879
1880     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1881     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1882     CYSetProperty(context, System, CYJSString("args"), array);
1883 }
1884
1885 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1886     return JSContextGetGlobalObject(context);
1887 }
1888
1889 // XXX: this is neither exceptin safe nor even terribly sane
1890 class ExecutionHandle {
1891   private:
1892     JSContextRef context_;
1893     std::vector<void *> handles_;
1894
1895   public:
1896     ExecutionHandle(JSContextRef context) :
1897         context_(context)
1898     {
1899         handles_.resize(GetHooks().size());
1900         for (size_t i(0); i != GetHooks().size(); ++i) {
1901             CYHook *hook(GetHooks()[i]);
1902             if (hook->ExecuteStart != NULL)
1903                 handles_[i] = (*hook->ExecuteStart)(context_);
1904             else
1905                 handles_[i] = NULL;
1906         }
1907     }
1908
1909     ~ExecutionHandle() {
1910         for (size_t i(GetHooks().size()); i != 0; --i) {
1911             CYHook *hook(GetHooks()[i-1]);
1912             if (hook->ExecuteEnd != NULL)
1913                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1914         }
1915     }
1916 };
1917
1918 static volatile bool cancel_;
1919
1920 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1921     return cancel_;
1922 }
1923
1924 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1925     ExecutionHandle handle(context);
1926
1927     cancel_ = false;
1928     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1929         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1930
1931     try {
1932         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1933         if (JSValueIsUndefined(context, result))
1934             return NULL;
1935
1936         std::set<void *> objects;
1937         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1938         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1939
1940         return json;
1941     } catch (const CYException &error) {
1942         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1943     }
1944 }
1945
1946 _visible void CYCancel() {
1947     cancel_ = true;
1948 }
1949
1950 static const char *CYPoolLibraryPath(CYPool &pool);
1951
1952 static bool initialized_ = false;
1953
1954 void CYInitializeDynamic() {
1955     if (!initialized_)
1956         initialized_ = true;
1957     else return;
1958
1959     CYPool pool;
1960     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1961     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1962
1963     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1964     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1965
1966     JSClassDefinition definition;
1967
1968     definition = kJSClassDefinitionEmpty;
1969     definition.className = "All";
1970     definition.staticFunctions = All_staticFunctions;
1971     definition.hasProperty = &All_hasProperty;
1972     definition.getProperty = &All_getProperty;
1973     definition.getPropertyNames = &All_getPropertyNames;
1974     All_ = JSClassCreate(&definition);
1975
1976     definition = kJSClassDefinitionEmpty;
1977     definition.className = "Context";
1978     definition.finalize = &CYFinalize;
1979     Context_ = JSClassCreate(&definition);
1980
1981     definition = kJSClassDefinitionEmpty;
1982     definition.className = "CArray";
1983     definition.staticFunctions = CArray_staticFunctions;
1984     definition.staticValues = CArray_staticValues;
1985     definition.getProperty = &CArray_getProperty;
1986     definition.setProperty = &CArray_setProperty;
1987     definition.finalize = &CYFinalize;
1988     CArray_ = JSClassCreate(&definition);
1989
1990     definition = kJSClassDefinitionEmpty;
1991     definition.className = "CString";
1992     definition.staticFunctions = CString_staticFunctions;
1993     definition.staticValues = CString_staticValues;
1994     definition.getProperty = &CString_getProperty;
1995     definition.setProperty = &CString_setProperty;
1996     definition.finalize = &CYFinalize;
1997     CString_ = JSClassCreate(&definition);
1998
1999     definition = kJSClassDefinitionEmpty;
2000     definition.className = "Functor";
2001     definition.staticFunctions = cy::Functor::StaticFunctions;
2002     definition.staticValues = Functor_staticValues;
2003     definition.callAsFunction = &Functor_callAsFunction;
2004     definition.finalize = &CYFinalize;
2005     Functor_ = JSClassCreate(&definition);
2006
2007     definition = kJSClassDefinitionEmpty;
2008     definition.className = "Pointer";
2009     definition.staticFunctions = Pointer_staticFunctions;
2010     definition.staticValues = Pointer_staticValues;
2011     definition.callAsFunction = &Pointer_callAsFunction;
2012     definition.getProperty = &Pointer_getProperty;
2013     definition.setProperty = &Pointer_setProperty;
2014     definition.finalize = &CYFinalize;
2015     Pointer_ = JSClassCreate(&definition);
2016
2017     definition = kJSClassDefinitionEmpty;
2018     definition.className = "Struct";
2019     definition.staticFunctions = Struct_staticFunctions;
2020     definition.staticValues = Struct_staticValues;
2021     definition.getProperty = &Struct_getProperty;
2022     definition.setProperty = &Struct_setProperty;
2023     definition.getPropertyNames = &Struct_getPropertyNames;
2024     definition.finalize = &CYFinalize;
2025     Struct_ = JSClassCreate(&definition);
2026
2027     definition = kJSClassDefinitionEmpty;
2028     definition.className = "Type";
2029     definition.staticValues = Type_staticValues;
2030     definition.staticFunctions = Type_staticFunctions;
2031     definition.callAsFunction = &Type_callAsFunction;
2032     definition.callAsConstructor = &Type_callAsConstructor;
2033     definition.finalize = &CYFinalize;
2034     Type_privateData::Class_ = JSClassCreate(&definition);
2035
2036     definition = kJSClassDefinitionEmpty;
2037     definition.className = "Global";
2038     //definition.getProperty = &Global_getProperty;
2039     Global_ = JSClassCreate(&definition);
2040
2041     Array_s = JSStringCreateWithUTF8CString("Array");
2042     cy_s = JSStringCreateWithUTF8CString("$cy");
2043     cyi_s = JSStringCreateWithUTF8CString("$cyi");
2044     cyt_s = JSStringCreateWithUTF8CString("$cyt");
2045     length_s = JSStringCreateWithUTF8CString("length");
2046     message_s = JSStringCreateWithUTF8CString("message");
2047     name_s = JSStringCreateWithUTF8CString("name");
2048     pop_s = JSStringCreateWithUTF8CString("pop");
2049     prototype_s = JSStringCreateWithUTF8CString("prototype");
2050     push_s = JSStringCreateWithUTF8CString("push");
2051     splice_s = JSStringCreateWithUTF8CString("splice");
2052     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2053     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2054     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2055     toString_s = JSStringCreateWithUTF8CString("toString");
2056     weak_s = JSStringCreateWithUTF8CString("weak");
2057
2058     Result_ = JSStringCreateWithUTF8CString("_");
2059
2060     for (CYHook *hook : GetHooks())
2061         if (hook->Initialize != NULL)
2062             (*hook->Initialize)();
2063 }
2064
2065 void CYThrow(JSContextRef context, JSValueRef value) {
2066     if (value != NULL)
2067         throw CYJSError(context, value);
2068 }
2069
2070 const char *CYJSError::PoolCString(CYPool &pool) const {
2071     std::set<void *> objects;
2072     // XXX: this used to be CYPoolCString
2073     return CYPoolCCYON(pool, context_, value_, objects);
2074 }
2075
2076 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2077     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2078     return value_;
2079 }
2080
2081 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2082     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2083     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2084     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2085 }
2086
2087 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2088     return CYCastJSError(context, name, message_);
2089 }
2090
2091 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2092     _assert(context != NULL);
2093
2094     CYPool pool;
2095
2096     va_list args;
2097     va_start(args, format);
2098     // XXX: there might be a beter way to think about this
2099     const char *message(pool.vsprintf(64, format, args));
2100     va_end(args);
2101
2102     value_ = CYCastJSError(context, "Error", message);
2103 }
2104
2105 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2106     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2107 }
2108
2109 static const char *CYPoolLibraryPath(CYPool &pool) {
2110     Dl_info addr;
2111     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2112     char *lib(pool.strdup(addr.dli_fname));
2113
2114     char *slash(strrchr(lib, '/'));
2115     _assert(slash != NULL);
2116     *slash = '\0';
2117
2118     slash = strrchr(lib, '/');
2119     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2120         *slash = '\0';
2121
2122     return lib;
2123 }
2124
2125 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2126     _assert(count == 1);
2127     CYPool pool;
2128
2129     const char *name(CYPoolCString(pool, context, arguments[0]));
2130     if (strchr(name, '/') == NULL && (
2131 #ifdef __APPLE__
2132         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2133         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2134 #endif
2135     false))
2136         return CYJSUndefined(context);
2137
2138     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2139     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2140
2141     CYJSString property("exports");
2142
2143     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2144     JSValueRef cache(CYGetProperty(context, modules, path));
2145
2146     JSValueRef result;
2147     if (!JSValueIsUndefined(context, cache)) {
2148         JSObjectRef module(CYCastJSObject(context, cache));
2149         result = CYGetProperty(context, module, property);
2150     } else {
2151         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2152         _assert(code.data != NULL);
2153
2154         size_t length(strlen(name));
2155         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2156             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2157             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2158             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2159             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2160         } else {
2161             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2162             CYSetProperty(context, modules, path, module);
2163
2164             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2165             CYSetProperty(context, module, property, exports);
2166
2167             std::stringstream wrap;
2168             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2169             code = CYPoolCode(pool, *wrap.rdbuf());
2170
2171             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2172             JSObjectRef function(CYCastJSObject(context, value));
2173
2174             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2175             CYCallAsFunction(context, function, NULL, 4, arguments);
2176             result = CYGetProperty(context, module, property);
2177         }
2178     }
2179
2180     return result;
2181 } CYCatch(NULL) }
2182
2183 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2184     CYPool pool;
2185     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2186     if (code.data == NULL)
2187         return false;
2188
2189     code = CYPoolCode(pool, code);
2190     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2191     return true;
2192 }
2193
2194 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2195 }
2196
2197 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2198     CYInitializeDynamic();
2199
2200     JSObjectRef global(CYGetGlobalObject(context));
2201
2202     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2203     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2204
2205 /* Cache Globals {{{ */
2206     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2207     CYSetProperty(context, cy, CYJSString("Array"), Array);
2208
2209     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2210     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2211
2212     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2213     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2214
2215     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2216     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2217
2218     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2219     CYSetProperty(context, cy, CYJSString("Error"), Error);
2220
2221     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2222     CYSetProperty(context, cy, CYJSString("Function"), Function);
2223
2224     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2225     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2226
2227     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2228     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2229
2230     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2231     CYSetProperty(context, cy, CYJSString("Number"), Number);
2232
2233     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2234     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2235
2236     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2237     CYSetProperty(context, cy, CYJSString("Object"), Object);
2238
2239     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2240     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2241
2242     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2243     CYSetProperty(context, cy, CYJSString("String"), String);
2244
2245     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2246     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2247
2248     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2249     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2250 /* }}} */
2251
2252     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2253     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2254
2255     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2256     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2257     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2258     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2259
2260     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray_, &CArray_new));
2261     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2262     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2263
2264     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2265     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2266     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2267
2268     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2269     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2270     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2271
2272     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2273     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2274
2275     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2276     CYSetProperty(context, cy, CYJSString("modules"), modules);
2277
2278     JSObjectRef all(JSObjectMake(context, All_, NULL));
2279     CYSetProperty(context, cycript, CYJSString("all"), all);
2280
2281     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2282     CYSetProperty(context, cy, CYJSString("cache"), cache);
2283     CYSetPrototype(context, cache, all);
2284
2285     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2286     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2287
2288     if (true) {
2289         JSObjectRef last(NULL), curr(global);
2290
2291         goto next; for (JSValueRef next;;) {
2292             if (JSValueIsNull(context, next))
2293                 break;
2294             last = curr;
2295             curr = CYCastJSObject(context, next);
2296           next:
2297             next = JSObjectGetPrototype(context, curr);
2298         }
2299
2300         CYSetPrototype(context, last, cache);
2301     }
2302
2303     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2304     CYSetProperty(context, cy, CYJSString("System"), System);
2305
2306     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2307
2308     CYSetProperty(context, global, CYJSString("system"), System);
2309     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2310     CYSetProperty(context, System, CYJSString("print"), &System_print);
2311
2312     CYSetProperty(context, global, CYJSString("global"), global);
2313
2314 #ifdef __APPLE__
2315     if (&JSWeakObjectMapCreate != NULL) {
2316         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2317         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2318     }
2319 #endif
2320
2321     CYSetProperty(context, String_prototype, cyt_s, CYMakeType(context, sig::String()), kJSPropertyAttributeDontEnum);
2322
2323     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2324     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2325     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2326
2327     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2328
2329     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2330     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2331     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2332     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2333
2334     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2335     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2336     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2337     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2338
2339     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2340     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2341     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2342     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2343
2344     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2345     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2346
2347     for (CYHook *hook : GetHooks())
2348         if (hook->SetupContext != NULL)
2349             (*hook->SetupContext)(context);
2350
2351     CYArrayPush(context, alls, cycript);
2352
2353     CYRunScript(context, "/libcycript.cy");
2354 }
2355
2356 static JSGlobalContextRef context_;
2357
2358 _visible JSGlobalContextRef CYGetJSContext() {
2359     CYInitializeDynamic();
2360
2361     if (context_ == NULL) {
2362         context_ = JSGlobalContextCreate(Global_);
2363         CYSetupContext(context_);
2364     }
2365
2366     return context_;
2367 }
2368
2369 _visible void CYDestroyContext() {
2370     if (context_ == NULL)
2371         return;
2372     JSGlobalContextRelease(context_);
2373     context_ = NULL;
2374 }