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 char *sqlite3_column_pooled(CYPool &pool, sqlite3_stmt *stmt, int n) {
  54     if (const unsigned char *value = sqlite3_column_text(stmt, n))
  55         return pool.strdup(reinterpret_cast<const char *>(value));
  56     else return NULL;
  57 }
  58
  59 static std::vector<CYHook *> &GetHooks() {
  60     static std::vector<CYHook *> hooks;
  61     return hooks;
  62 }
  63
  64 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  65     GetHooks().push_back(hook);
  66 }
  67
  68 /* JavaScript Properties {{{ */
  69 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  70     return JSObjectHasProperty(context, object, name);
  71 }
  72
  73 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  74     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  75 }
  76
  77 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  78     return _jsccall(JSObjectGetProperty, context, object, name);
  79 }
  80
  81 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  82     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  83 }
  84
  85 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  86     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  87 }
  88
  89 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  90     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  91 }
  92
  93 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  94     JSObjectSetPrototype(context, object, value);
  95     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
  96 }
  97 /* }}} */
  98 /* JavaScript Strings {{{ */
  99 JSStringRef CYCopyJSString(const char *value) {
 100     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 101 }
 102
 103 JSStringRef CYCopyJSString(JSStringRef value) {
 104     return value == NULL ? NULL : JSStringRetain(value);
 105 }
 106
 107 JSStringRef CYCopyJSString(CYUTF8String value) {
 108     if (memchr(value.data, '\0', value.size) != NULL) {
 109         CYPool pool;
 110         return CYCopyJSString(pool.memdup(value.data, value.size));
 111     } else if (value.data[value.size] != '\0') {
 112         CYPool pool;
 113         return CYCopyJSString(CYPoolUTF16String(pool, value));
 114     } else {
 115         return CYCopyJSString(value.data);
 116     }
 117 }
 118
 119 JSStringRef CYCopyJSString(CYUTF16String value) {
 120     return JSStringCreateWithCharacters(value.data, value.size);
 121 }
 122
 123 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 124     if (JSValueIsNull(context, value))
 125         return NULL;
 126     return _jsccall(JSValueToStringCopy, context, value);
 127 }
 128
 129 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 130     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 131 }
 132
 133 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 134     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 135 }
 136
 137 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 138     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 139     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 140     return utf8.data;
 141 }
 142
 143 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 144     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 145 }
 146 /* }}} */
 147 /* Index Offsets {{{ */
 148 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 149     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 150 }
 151 /* }}} */
 152
 153 static JSClassRef All_;
 154 static JSClassRef Context_;
 155 static JSClassRef CString_;
 156 JSClassRef Functor_;
 157 static JSClassRef Global_;
 158 static JSClassRef Pointer_;
 159 static JSClassRef Struct_;
 160
 161 JSStringRef Array_s;
 162 JSStringRef cy_s;
 163 JSStringRef cyi_s;
 164 JSStringRef length_s;
 165 JSStringRef message_s;
 166 JSStringRef name_s;
 167 JSStringRef pop_s;
 168 JSStringRef prototype_s;
 169 JSStringRef push_s;
 170 JSStringRef splice_s;
 171 JSStringRef toCYON_s;
 172 JSStringRef toJSON_s;
 173 JSStringRef toPointer_s;
 174 JSStringRef toString_s;
 175 JSStringRef weak_s;
 176
 177 static sqlite3 *database_;
 178
 179 static JSStringRef Result_;
 180
 181 void CYFinalize(JSObjectRef object) {
 182     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 183     _assert(internal->count_ != _not(unsigned));
 184     if (--internal->count_ == 0)
 185         delete internal;
 186 }
 187
 188 void Structor_(CYPool &pool, sig::Type *&type) {
 189     if (
 190         type->primitive == sig::pointer_P &&
 191         type->data.data.type->primitive == sig::struct_P &&
 192         type->data.data.type->name != NULL &&
 193         strcmp(type->data.data.type->name, "_objc_class") == 0
 194     ) {
 195         type->primitive = sig::typename_P;
 196         type->data.data.type = NULL;
 197         return;
 198     }
 199
 200     if (type->primitive != sig::struct_P || type->name == NULL)
 201         return;
 202
 203     //_assert(false);
 204 }
 205
 206 JSClassRef Type_privateData::Class_;
 207
 208 struct Context :
 209     CYData
 210 {
 211     JSGlobalContextRef context_;
 212
 213     Context(JSGlobalContextRef context) :
 214         context_(context)
 215     {
 216     }
 217 };
 218
 219 struct CString :
 220     CYOwned
 221 {
 222     CString(char *value, JSContextRef context, JSObjectRef owner) :
 223         CYOwned(value, context, owner)
 224     {
 225     }
 226 };
 227
 228 struct Pointer :
 229     CYOwned
 230 {
 231     Type_privateData *type_;
 232     size_t length_;
 233
 234     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 235         CYOwned(value, context, owner),
 236         type_(new(*pool_) Type_privateData(type)),
 237         length_(length)
 238     {
 239     }
 240
 241     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, const char *encoding) :
 242         CYOwned(value, context, owner),
 243         type_(new(*pool_) Type_privateData(encoding)),
 244         length_(length)
 245     {
 246     }
 247 };
 248
 249 struct Struct_privateData :
 250     CYOwned
 251 {
 252     Type_privateData *type_;
 253
 254     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 255         CYOwned(NULL, context, owner)
 256     {
 257     }
 258 };
 259
 260 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 261     Struct_privateData *internal(new Struct_privateData(context, owner));
 262     CYPool &pool(*internal->pool_);
 263     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 264     internal->type_ = typical;
 265
 266     if (owner != NULL)
 267         internal->value_ = data;
 268     else {
 269         size_t size(typical->GetFFI()->size);
 270         void *copy(internal->pool_->malloc<void>(size));
 271         memcpy(copy, data, size);
 272         internal->value_ = copy;
 273     }
 274
 275     return JSObjectMake(context, Struct_, internal);
 276 }
 277
 278 static void *CYCastSymbol(const char *name) {
 279     for (CYHook *hook : GetHooks())
 280         if (hook->CastSymbol != NULL)
 281             if (void *value = (*hook->CastSymbol)(name))
 282                 return value;
 283     return dlsym(RTLD_DEFAULT, name);
 284 }
 285
 286 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 287     return JSValueMakeBoolean(context, value);
 288 }
 289
 290 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 291     return JSValueMakeNumber(context, value);
 292 }
 293
 294 #define CYCastJSValue_(Type_) \
 295     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 296         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 297         return JSValueMakeNumber(context, static_cast<double>(value)); \
 298     }
 299
 300 CYCastJSValue_(int)
 301 CYCastJSValue_(unsigned int)
 302 CYCastJSValue_(long int)
 303 CYCastJSValue_(long unsigned int)
 304 CYCastJSValue_(long long int)
 305 CYCastJSValue_(long long unsigned int)
 306
 307 JSValueRef CYJSUndefined(JSContextRef context) {
 308     return JSValueMakeUndefined(context);
 309 }
 310
 311 double CYCastDouble(JSContextRef context, JSValueRef value) {
 312     return _jsccall(JSValueToNumber, context, value);
 313 }
 314
 315 bool CYCastBool(JSContextRef context, JSValueRef value) {
 316     return JSValueToBoolean(context, value);
 317 }
 318
 319 JSValueRef CYJSNull(JSContextRef context) {
 320     return JSValueMakeNull(context);
 321 }
 322
 323 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 324     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 325 }
 326
 327 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 328     return CYCastJSValue(context, CYJSString(value));
 329 }
 330
 331 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 332     return _jsccall(JSValueToObject, context, value);
 333 }
 334
 335 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 336     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 337 }
 338
 339 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 340     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 341 }
 342
 343 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 344     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 345 }
 346
 347 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 348     return JSValueIsStrictEqual(context, lhs, rhs);
 349 }
 350
 351 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 352     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 353 }
 354
 355 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 356     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 357 }
 358
 359 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 360     JSValueRef arguments[1];
 361     arguments[0] = value;
 362     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 363     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 364 }
 365
 366 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 367     FILE *file(stdout);
 368
 369     if (count == 0)
 370         fputc('\n', file);
 371     else {
 372         CYPool pool;
 373         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 374         fwrite(string.data, string.size, 1, file);
 375     }
 376
 377     fflush(file);
 378     return CYJSUndefined(context);
 379 } CYCatch(NULL) }
 380
 381 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 382
 383 _visible void CYGarbageCollect(JSContextRef context) {
 384     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 385 }
 386
 387 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 388     CYPool pool;
 389     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 390     std::stringbuf value(std::string(before.data, before.size));
 391     CYUTF8String after(CYPoolCode(pool, value));
 392     return CYCastJSValue(context, CYJSString(after));
 393 } CYCatch_(NULL, "SyntaxError") }
 394
 395 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 396     CYGarbageCollect(context);
 397     return CYJSUndefined(context);
 398 } CYCatch(NULL) }
 399
 400 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 401     switch (JSType type = JSValueGetType(context, value)) {
 402         case kJSTypeUndefined:
 403             return "undefined";
 404         case kJSTypeNull:
 405             return "null";
 406         case kJSTypeBoolean:
 407             return CYCastBool(context, value) ? "true" : "false";
 408
 409         case kJSTypeNumber: {
 410             std::ostringstream str;
 411             CYNumerify(str, CYCastDouble(context, value));
 412             std::string value(str.str());
 413             return pool.strmemdup(value.c_str(), value.size());
 414         } break;
 415
 416         case kJSTypeString: {
 417             std::ostringstream str;
 418             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 419             CYStringify(str, string.data, string.size);
 420             std::string value(str.str());
 421             return pool.strmemdup(value.c_str(), value.size());
 422         } break;
 423
 424         case kJSTypeObject:
 425             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 426         default:
 427             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 428     }
 429 } CYCatch(NULL) }
 430
 431 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 432     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 433 }
 434
 435 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 436     if (objects != NULL)
 437         return CYPoolCCYON(pool, context, value, *objects);
 438     else {
 439         std::set<void *> objects;
 440         return CYPoolCCYON(pool, context, value, objects);
 441     }
 442 }
 443
 444 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 445     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 446     if (CYIsCallable(context, toCYON)) {
 447         // XXX: this needs to be abstracted behind some kind of function
 448         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 449         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 450         _assert(value != NULL);
 451         return CYPoolCString(pool, context, value);
 452     }
 453
 454     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 455     if (CYIsCallable(context, toJSON)) {
 456         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 457         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 458     }
 459
 460     if (JSObjectIsFunction(context, object)) {
 461         JSValueRef toString(CYGetProperty(context, object, toString_s));
 462         if (CYIsCallable(context, toString)) {
 463             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 464             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 465             _assert(value != NULL);
 466             return CYPoolCString(pool, context, value);
 467         }
 468     }
 469
 470     _assert(objects.insert(object).second);
 471
 472     std::ostringstream str;
 473
 474     str << '{';
 475
 476     // XXX: this is, sadly, going to leak
 477     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 478
 479     bool comma(false);
 480
 481     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 482         if (comma)
 483             str << ',';
 484         else
 485             comma = true;
 486
 487         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 488         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 489
 490         if (CYIsKey(string))
 491             str << string.data;
 492         else
 493             CYStringify(str, string.data, string.size);
 494
 495         str << ':';
 496
 497         try {
 498             JSValueRef value(CYGetProperty(context, object, name));
 499             str << CYPoolCCYON(pool, context, value, objects);
 500         } catch (const CYException &error) {
 501             str << "@error";
 502         }
 503     }
 504
 505     JSPropertyNameArrayRelease(names);
 506
 507     str << '}';
 508
 509     std::string string(str.str());
 510     return pool.strmemdup(string.c_str(), string.size());
 511 }
 512
 513 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 514     if (count == 0)
 515         return NULL;
 516     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 517 }
 518
 519 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 520     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 521     // XXX: this is horribly inefficient
 522     std::set<void *> backup;
 523     if (objects == NULL)
 524         objects = &backup;
 525
 526     CYPool pool;
 527     std::ostringstream str;
 528
 529     str << '[';
 530
 531     JSValueRef length(CYGetProperty(context, _this, length_s));
 532     bool comma(false);
 533
 534     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 535         if (comma)
 536             str << ',';
 537         else
 538             comma = true;
 539
 540         try {
 541             JSValueRef value(CYGetProperty(context, _this, index));
 542             if (!JSValueIsUndefined(context, value))
 543                 str << CYPoolCCYON(pool, context, value, *objects);
 544             else {
 545                 str << ',';
 546                 comma = false;
 547             }
 548         } catch (const CYException &error) {
 549             str << "@error";
 550         }
 551     }
 552
 553     str << ']';
 554
 555     std::string value(str.str());
 556     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 557 } CYCatch(NULL) }
 558
 559 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 560     CYPool pool;
 561     std::ostringstream str;
 562
 563     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 564     CYStringify(str, string.data, string.size);
 565
 566     std::string value(str.str());
 567     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 568 } CYCatch(NULL) }
 569
 570 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 571     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 572     return JSObjectMake(context, Pointer_, internal);
 573 }
 574
 575 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, const char *encoding, JSObjectRef owner) {
 576     Pointer *internal(new Pointer(pointer, context, owner, length, encoding));
 577     return JSObjectMake(context, Pointer_, internal);
 578 }
 579
 580 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 581     CString *internal(new CString(pointer, context, owner));
 582     return JSObjectMake(context, CString_, internal);
 583 }
 584
 585 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 586     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 587 }
 588
 589 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 590     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 591     if (function == NULL)
 592         return NULL;
 593
 594     cy::Functor *internal(new cy::Functor(encoding, function));
 595     ++internal->count_;
 596     return JSObjectMake(context, Functor_, internal);
 597 }
 598
 599 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 600     return CYGetOffset(CYPoolCString(pool, context, value), index);
 601 }
 602
 603 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 604     if (value == NULL)
 605         return NULL;
 606     else switch (JSValueGetType(context, value)) {
 607         case kJSTypeNull:
 608             return NULL;
 609         case kJSTypeObject: {
 610             JSObjectRef object((JSObjectRef) value);
 611             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 612                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 613                 return internal->value_;
 614             }
 615             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 616             if (CYIsCallable(context, toPointer)) {
 617                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 618                 _assert(value != NULL);
 619                 return CYCastPointer_(context, value, guess);
 620             }
 621         } default:
 622             if (guess != NULL)
 623                 *guess = true;
 624         case kJSTypeNumber:
 625             double number(CYCastDouble(context, value));
 626             if (!std::isnan(number))
 627                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 628             if (guess == NULL)
 629                 throw CYJSError(context, "cannot convert value to pointer");
 630             else {
 631                 *guess = true;
 632                 return NULL;
 633             }
 634     }
 635 }
 636
 637 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 638     switch (type->primitive) {
 639         case sig::boolean_P:
 640             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 641         break;
 642
 643 #define CYPoolFFI_(primitive, native) \
 644         case sig::primitive ## _P: \
 645             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 646         break;
 647
 648         CYPoolFFI_(uchar, unsigned char)
 649         CYPoolFFI_(char, char)
 650         CYPoolFFI_(ushort, unsigned short)
 651         CYPoolFFI_(short, short)
 652         CYPoolFFI_(ulong, unsigned long)
 653         CYPoolFFI_(long, long)
 654         CYPoolFFI_(uint, unsigned int)
 655         CYPoolFFI_(int, int)
 656         CYPoolFFI_(ulonglong, unsigned long long)
 657         CYPoolFFI_(longlong, long long)
 658         CYPoolFFI_(float, float)
 659         CYPoolFFI_(double, double)
 660
 661         case sig::array_P: {
 662             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 663             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 664             for (size_t index(0); index != type->data.data.size; ++index) {
 665                 ffi_type *field(ffi->elements[index]);
 666
 667                 JSValueRef rhs;
 668                 if (aggregate == NULL)
 669                     rhs = value;
 670                 else {
 671                     rhs = CYGetProperty(context, aggregate, index);
 672                     if (JSValueIsUndefined(context, rhs))
 673                         throw CYJSError(context, "unable to extract array value");
 674                 }
 675
 676                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 677                 // XXX: alignment?
 678                 base += field->size;
 679             }
 680         } break;
 681
 682         case sig::pointer_P:
 683             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 684         break;
 685
 686         case sig::string_P: {
 687             bool guess(false);
 688             *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 689             if (guess && pool != NULL)
 690                 *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 691         } break;
 692
 693         case sig::struct_P: {
 694             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 695             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 696             for (size_t index(0); index != type->data.signature.count; ++index) {
 697                 sig::Element *element(&type->data.signature.elements[index]);
 698                 ffi_type *field(ffi->elements[index]);
 699
 700                 JSValueRef rhs;
 701                 if (aggregate == NULL)
 702                     rhs = value;
 703                 else {
 704                     rhs = CYGetProperty(context, aggregate, index);
 705                     if (JSValueIsUndefined(context, rhs)) {
 706                         if (element->name != NULL)
 707                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 708                         else
 709                             goto undefined;
 710                         if (JSValueIsUndefined(context, rhs)) undefined:
 711                             throw CYJSError(context, "unable to extract structure value");
 712                     }
 713                 }
 714
 715                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 716                 // XXX: alignment?
 717                 base += field->size;
 718             }
 719         } break;
 720
 721         case sig::void_P:
 722         break;
 723
 724         default:
 725             for (CYHook *hook : GetHooks())
 726                 if (hook->PoolFFI != NULL)
 727                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 728                         return;
 729
 730             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 731     }
 732 }
 733
 734 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 735     switch (type->primitive) {
 736         case sig::boolean_P:
 737             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 738
 739 #define CYFromFFI_(primitive, native) \
 740         case sig::primitive ## _P: \
 741             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 742
 743         CYFromFFI_(uchar, unsigned char)
 744         CYFromFFI_(char, char)
 745         CYFromFFI_(ushort, unsigned short)
 746         CYFromFFI_(short, short)
 747         CYFromFFI_(ulong, unsigned long)
 748         CYFromFFI_(long, long)
 749         CYFromFFI_(uint, unsigned int)
 750         CYFromFFI_(int, int)
 751         CYFromFFI_(ulonglong, unsigned long long)
 752         CYFromFFI_(longlong, long long)
 753         CYFromFFI_(float, float)
 754         CYFromFFI_(double, double)
 755
 756         case sig::array_P:
 757             if (void *pointer = data)
 758                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 759             else goto null;
 760
 761         case sig::pointer_P:
 762             if (void *pointer = *reinterpret_cast<void **>(data))
 763                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 764             else goto null;
 765
 766         case sig::string_P:
 767             if (char *pointer = *reinterpret_cast<char **>(data))
 768                 return CYMakeCString(context, pointer, owner);
 769             else goto null;
 770
 771         case sig::struct_P:
 772             return CYMakeStruct(context, data, type, ffi, owner);
 773         case sig::void_P:
 774             return CYJSUndefined(context);
 775
 776         null:
 777             return CYJSNull(context);
 778         default:
 779             for (CYHook *hook : GetHooks())
 780                 if (hook->FromFFI != NULL)
 781                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 782                         return value;
 783
 784             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 785     }
 786 }
 787
 788 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 789     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 790
 791     JSContextRef context(internal->context_);
 792
 793     size_t count(internal->cif_.nargs);
 794     JSValueRef values[count];
 795
 796     for (size_t index(0); index != count; ++index)
 797         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 798
 799     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 800     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 801 }
 802
 803 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 804     return CYCallAsFunction(context, function, NULL, count, values);
 805 }
 806
 807 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 808     // XXX: in case of exceptions this will leak
 809     // XXX: in point of fact, this may /need/ to leak :(
 810     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 811
 812 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 813     void *executable;
 814     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 815
 816     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 817     _assert(status == FFI_OK);
 818
 819     internal->value_ = executable;
 820 #else
 821     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 822         NULL, sizeof(ffi_closure),
 823         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 824         -1, 0
 825     )));
 826
 827     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 828     _assert(status == FFI_OK);
 829
 830     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 831
 832     internal->value_ = closure;
 833 #endif
 834
 835     return internal;
 836 }
 837
 838 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 839     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 840     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 841     // XXX: see above notes about needing to leak
 842     JSValueProtect(CYGetJSContext(context), object);
 843     return object;
 844 }
 845
 846 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 847     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 848 }
 849
 850 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 851     return CYCastJSObject(context, CYGetCachedValue(context, name));
 852 }
 853
 854 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 855     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 856
 857     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 858     if (function) {
 859         JSObjectRef function(CYCastJSObject(context, value));
 860         return CYMakeFunctor(context, function, signature);
 861     } else {
 862         void (*function)()(CYCastPointer<void (*)()>(context, value));
 863         return CYMakeFunctor(context, function, signature);
 864     }
 865 }
 866
 867 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 868     CYPool pool;
 869     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 870     char *string(static_cast<char *>(internal->value_));
 871
 872     ssize_t offset;
 873     if (!CYGetOffset(pool, context, property, offset))
 874         return NULL;
 875
 876     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 877 } CYCatch(NULL) }
 878
 879 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 880     CYPool pool;
 881     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 882     char *string(static_cast<char *>(internal->value_));
 883
 884     ssize_t offset;
 885     if (!CYGetOffset(pool, context, property, offset))
 886         return false;
 887
 888     const char *data(CYPoolCString(pool, context, value));
 889     string[offset] = *data;
 890     return true;
 891 } CYCatch(false) }
 892
 893 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 894     Type_privateData *typical(internal->type_);
 895     sig::Type *type(typical->type_);
 896     if (type == NULL)
 897         return false;
 898
 899     const char *name(CYPoolCString(pool, context, property));
 900     size_t length(strlen(name));
 901     double number(CYCastDouble(name, length));
 902
 903     size_t count(type->data.signature.count);
 904
 905     if (std::isnan(number)) {
 906         if (property == NULL)
 907             return false;
 908
 909         sig::Element *elements(type->data.signature.elements);
 910
 911         for (size_t local(0); local != count; ++local) {
 912             sig::Element *element(&elements[local]);
 913             if (element->name != NULL && strcmp(name, element->name) == 0) {
 914                 index = local;
 915                 goto base;
 916             }
 917         }
 918
 919         return false;
 920     } else {
 921         index = static_cast<ssize_t>(number);
 922         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 923             return false;
 924     }
 925
 926   base:
 927     ffi_type **elements(typical->GetFFI()->elements);
 928
 929     base = reinterpret_cast<uint8_t *>(internal->value_);
 930     for (ssize_t local(0); local != index; ++local)
 931         base += elements[local]->size;
 932
 933     return true;
 934 }
 935
 936 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 937     CYPool pool;
 938     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 939
 940     if (JSStringIsEqual(property, length_s))
 941         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 942
 943     Type_privateData *typical(internal->type_);
 944     if (typical->type_ == NULL)
 945         return NULL;
 946     sig::Type &type(*typical->type_);
 947
 948     ssize_t offset;
 949     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 950         offset = 0;
 951     else if (!CYGetOffset(pool, context, property, offset))
 952         return NULL;
 953
 954     if (type.primitive == sig::function_P)
 955         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 956
 957     ffi_type *ffi(typical->GetFFI());
 958
 959     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 960     base += ffi->size * offset;
 961
 962     JSObjectRef owner(internal->GetOwner() ?: object);
 963     return CYFromFFI(context, &type, ffi, base, false, owner);
 964 } CYCatch(NULL) }
 965
 966 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 967     CYPool pool;
 968     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 969     Type_privateData *typical(internal->type_);
 970
 971     if (typical->type_ == NULL)
 972         return false;
 973
 974     ssize_t offset;
 975     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 976         offset = 0;
 977     else if (!CYGetOffset(pool, context, property, offset))
 978         return false;
 979
 980     ffi_type *ffi(typical->GetFFI());
 981
 982     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 983     base += ffi->size * offset;
 984
 985     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 986     return true;
 987 } CYCatch(false) }
 988
 989 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 990     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 991     Type_privateData *typical(internal->type_);
 992     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 993 } CYCatch(NULL) }
 994
 995 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 996     CYPool pool;
 997     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 998     Type_privateData *typical(internal->type_);
 999
1000     ssize_t index;
1001     uint8_t *base;
1002
1003     if (!Index_(pool, context, internal, property, index, base))
1004         return NULL;
1005
1006     JSObjectRef owner(internal->GetOwner() ?: object);
1007
1008     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
1009 } CYCatch(NULL) }
1010
1011 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1012     CYPool pool;
1013     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1014     Type_privateData *typical(internal->type_);
1015
1016     ssize_t index;
1017     uint8_t *base;
1018
1019     if (!Index_(pool, context, internal, property, index, base))
1020         return false;
1021
1022     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
1023     return true;
1024 } CYCatch(false) }
1025
1026 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1027     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1028     Type_privateData *typical(internal->type_);
1029     sig::Type *type(typical->type_);
1030
1031     if (type == NULL)
1032         return;
1033
1034     size_t count(type->data.signature.count);
1035     sig::Element *elements(type->data.signature.elements);
1036
1037     char number[32];
1038
1039     for (size_t index(0); index != count; ++index) {
1040         const char *name;
1041         name = elements[index].name;
1042
1043         if (name == NULL) {
1044             sprintf(number, "%zu", index);
1045             name = number;
1046         }
1047
1048         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1049     }
1050 }
1051
1052 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1053     ffi_call(cif, function, value, values);
1054 }
1055
1056 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
1057     if (setups + count != signature->count - 1)
1058         throw CYJSError(context, "incorrect number of arguments to ffi function");
1059
1060     size_t size(setups + count);
1061     void *values[size];
1062     memcpy(values, setup, sizeof(void *) * setups);
1063
1064     for (size_t index(setups); index != size; ++index) {
1065         sig::Element *element(&signature->elements[index + 1]);
1066         ffi_type *ffi(cif->arg_types[index]);
1067         // XXX: alignment?
1068         values[index] = new(pool) uint8_t[ffi->size];
1069         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
1070     }
1071
1072     uint8_t value[cif->rtype->size];
1073
1074     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1075     // XXX: this only supports one hook, but it is a bad idea anyway
1076     for (CYHook *hook : GetHooks())
1077         if (hook->CallFunction != NULL)
1078             call = hook->CallFunction;
1079
1080     call(pool, context, cif, function, value, values);
1081     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1082 }
1083
1084 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1085     CYPool pool;
1086     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1087     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1088 } CYCatch(NULL) }
1089
1090 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1091     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1092     if (internal->type_->type_->primitive != sig::function_P)
1093         throw CYJSError(context, "cannot call a pointer to non-function");
1094     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1095     return CYCallAsFunction(context, functor, _this, count, arguments);
1096 } CYCatch(NULL) }
1097
1098 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
1099     Type_privateData *internal(new Type_privateData(encoding));
1100     return JSObjectMake(context, Type_privateData::Class_, internal);
1101 }
1102
1103 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1104     Type_privateData *internal(new Type_privateData(type));
1105     return JSObjectMake(context, Type_privateData::Class_, internal);
1106 }
1107
1108 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1109     CYPool pool;
1110
1111     sig::Type type;
1112     type.name = NULL;
1113     type.flags = 0;
1114
1115     type.primitive = sig::function_P;
1116     sig::Copy(pool, type.data.signature, *signature);
1117
1118     return CYMakeType(context, &type);
1119 }
1120
1121 extern "C" const char *CYBridgeHash(CYPool &pool, CYUTF8String name) {
1122     sqlite3_stmt *statement;
1123
1124     _sqlcall(sqlite3_prepare(database_,
1125         "select "
1126             "\"cache\".\"value\" "
1127         "from \"cache\" "
1128         "where"
1129             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1130             " \"cache\".\"name\" = ?"
1131         " limit 1"
1132     , -1, &statement, NULL));
1133
1134     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1135
1136     const char *value;
1137     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1138         value = NULL;
1139     else
1140         value = sqlite3_column_pooled(pool, statement, 0);
1141
1142     _sqlcall(sqlite3_finalize(statement));
1143     return value;
1144 }
1145
1146 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1147     JSObjectRef global(CYGetGlobalObject(context));
1148     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1149     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1150
1151     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1152         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1153             if (CYHasProperty(context, space, property))
1154                 return true;
1155
1156     CYPool pool;
1157     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property)) != NULL)
1158         return true;
1159
1160     return false;
1161 }
1162
1163 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1164     JSObjectRef global(CYGetGlobalObject(context));
1165     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1166     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1167
1168     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1169         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1170             if (JSValueRef value = CYGetProperty(context, space, property))
1171                 if (!JSValueIsUndefined(context, value))
1172                     return value;
1173
1174     CYPool pool;
1175     if (const char *code = CYBridgeHash(pool, CYPoolUTF8String(pool, context, property))) {
1176         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(CYPoolCode(pool, code)), NULL, NULL, 0));
1177         CYSetProperty(context, object, property, result, kJSPropertyAttributeDontEnum);
1178         return result;
1179     }
1180
1181     return NULL;
1182 } CYCatch(NULL) }
1183
1184 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1185     JSObjectRef global(CYGetGlobalObject(context));
1186     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1187     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1188
1189     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1190         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1191             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1192             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1193                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1194             JSPropertyNameArrayRelease(subset);
1195         }
1196 }
1197
1198 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1199     if (count != 1)
1200         throw CYJSError(context, "incorrect number of arguments to CString constructor");
1201     char *value(CYCastPointer<char *>(context, arguments[0]));
1202     return CYMakeCString(context, value, NULL);
1203 } CYCatch(NULL) }
1204
1205 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1206     if (count != 2)
1207         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1208
1209     CYPool pool;
1210
1211     void *value(CYCastPointer<void *>(context, arguments[0]));
1212     const char *type(CYPoolCString(pool, context, arguments[1]));
1213
1214     sig::Signature signature;
1215     sig::Parse(pool, &signature, type, &Structor_);
1216
1217     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1218 } CYCatch(NULL) }
1219
1220 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1221     CYPool pool;
1222
1223     if (false) {
1224     } else if (count == 1) {
1225         const char *type(CYPoolCString(pool, context, arguments[0]));
1226         return CYMakeType(context, type);
1227     } else if (count == 2) {
1228         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1229         size_t count(CYArrayLength(context, types));
1230
1231         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1232
1233         sig::Type type;
1234         type.name = NULL;
1235         type.flags = 0;
1236
1237         type.primitive = sig::struct_P;
1238         type.data.signature.elements = new(pool) sig::Element[count];
1239         type.data.signature.count = count;
1240
1241         for (size_t i(0); i != count; ++i) {
1242             sig::Element &element(type.data.signature.elements[i]);
1243             element.offset = _not(size_t);
1244
1245             JSValueRef name(CYArrayGet(context, names, i));
1246             if (JSValueIsUndefined(context, name))
1247                 element.name = NULL;
1248             else
1249                 element.name = CYPoolCString(pool, context, name);
1250
1251             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1252             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1253             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1254             element.type = internal->type_;
1255         }
1256
1257         return CYMakeType(context, &type);
1258     } else {
1259         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1260     }
1261 } CYCatch(NULL) }
1262
1263 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1264     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1265
1266     CYPool pool;
1267
1268     sig::Type type;
1269     type.name = NULL;
1270     type.flags = 0;
1271
1272     type.primitive = primitive;
1273     type.data.signature.elements = new(pool) sig::Element[1 + count];
1274     type.data.signature.count = 1 + count;
1275
1276     type.data.signature.elements[0].name = NULL;
1277     type.data.signature.elements[0].type = internal->type_;
1278     type.data.signature.elements[0].offset = _not(size_t);
1279
1280     for (size_t i(0); i != count; ++i) {
1281         sig::Element &element(type.data.signature.elements[i + 1]);
1282         element.name = NULL;
1283         element.offset = _not(size_t);
1284
1285         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1286         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1287         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1288
1289         element.type = internal->type_;
1290     }
1291
1292     return CYMakeType(context, &type);
1293 } CYCatch(NULL) }
1294
1295 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1296     if (count != 1)
1297         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1298     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1299
1300     CYPool pool;
1301     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1302     if (index == _not(size_t))
1303         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1304
1305     sig::Type type;
1306     type.name = NULL;
1307     type.flags = 0;
1308
1309     type.primitive = sig::array_P;
1310     type.data.data.type = internal->type_;
1311     type.data.data.size = index;
1312
1313     return CYMakeType(context, &type);
1314 } CYCatch(NULL) }
1315
1316 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1317     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1318 }
1319
1320 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1321     if (count != 0)
1322         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1323     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1324
1325     sig::Type type(*internal->type_);
1326     type.flags |= JOC_TYPE_CONST;
1327     return CYMakeType(context, &type);
1328 } CYCatch(NULL) }
1329
1330 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1331     if (count != 0)
1332         throw CYJSError(context, "incorrect number of arguments to Type.long");
1333     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1334
1335     sig::Type type(*internal->type_);
1336
1337     switch (type.primitive) {
1338         case sig::short_P: type.primitive = sig::int_P; break;
1339         case sig::int_P: type.primitive = sig::long_P; break;
1340         case sig::long_P: type.primitive = sig::longlong_P; break;
1341         default: throw CYJSError(context, "invalid type argument to Type.long");
1342     }
1343
1344     return CYMakeType(context, &type);
1345 } CYCatch(NULL) }
1346
1347 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1348     if (count != 0)
1349         throw CYJSError(context, "incorrect number of arguments to Type.short");
1350     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1351
1352     sig::Type type(*internal->type_);
1353
1354     switch (type.primitive) {
1355         case sig::int_P: type.primitive = sig::short_P; break;
1356         case sig::long_P: type.primitive = sig::int_P; break;
1357         case sig::longlong_P: type.primitive = sig::long_P; break;
1358         default: throw CYJSError(context, "invalid type argument to Type.short");
1359     }
1360
1361     return CYMakeType(context, &type);
1362 } CYCatch(NULL) }
1363
1364 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1365     if (count != 0)
1366         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1367     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1368
1369     sig::Type type(*internal->type_);
1370
1371     switch (type.primitive) {
1372         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1373         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1374         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1375         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1376         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1377         default: throw CYJSError(context, "invalid type argument to Type.signed");
1378     }
1379
1380     return CYMakeType(context, &type);
1381 } CYCatch(NULL) }
1382
1383 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1384     if (count != 0)
1385         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1386     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1387
1388     sig::Type type(*internal->type_);
1389
1390     switch (type.primitive) {
1391         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1392         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1393         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1394         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1395         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1396         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1397     }
1398
1399     return CYMakeType(context, &type);
1400 } CYCatch(NULL) }
1401
1402 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1403     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1404 }
1405
1406 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1407     if (count != 0)
1408         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1409     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1410
1411     sig::Type type;
1412     type.name = NULL;
1413
1414     if (internal->type_->primitive == sig::char_P) {
1415         type.flags = internal->type_->flags;
1416         type.primitive = sig::string_P;
1417         type.data.data.type = NULL;
1418         type.data.data.size = 0;
1419     } else {
1420         type.flags = 0;
1421         type.primitive = sig::pointer_P;
1422         type.data.data.type = internal->type_;
1423         type.data.data.size = 0;
1424     }
1425
1426     return CYMakeType(context, &type);
1427 } CYCatch(NULL) }
1428
1429 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1430     if (count != 1)
1431         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1432     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1433
1434     CYPool pool;
1435     const char *name(CYPoolCString(pool, context, arguments[0]));
1436
1437     sig::Type type(*internal->type_);
1438     type.name = name;
1439     return CYMakeType(context, &type);
1440 } CYCatch(NULL) }
1441
1442 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1443     if (count != 1)
1444         throw CYJSError(context, "incorrect number of arguments to type cast function");
1445     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1446
1447     if (internal->type_->primitive == sig::function_P)
1448         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1449
1450     sig::Type *type(internal->type_);
1451     ffi_type *ffi(internal->GetFFI());
1452     // XXX: alignment?
1453     uint8_t value[ffi->size];
1454     CYPool pool;
1455     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1456     return CYFromFFI(context, type, ffi, value);
1457 } CYCatch(NULL) }
1458
1459 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1460     if (count != 0)
1461         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1462     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1463
1464     sig::Type *type(internal->type_);
1465     size_t length;
1466
1467     if (type->primitive != sig::array_P)
1468         length = _not(size_t);
1469     else {
1470         length = type->data.data.size;
1471         type = type->data.data.type;
1472     }
1473
1474     JSObjectRef pointer(CYMakePointer(context, NULL, length, type, NULL, NULL));
1475     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1476     value->value_ = value->pool_->malloc<void>(internal->GetFFI()->size);
1477     memset(value->value_, 0, internal->GetFFI()->size);
1478     return pointer;
1479 } CYCatch(NULL) }
1480
1481 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1482     if (count != 2)
1483         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1484     CYPool pool;
1485     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1486     sig::Signature signature;
1487     sig::Parse(pool, &signature, encoding, &Structor_);
1488     return CYMakeFunctor(context, arguments[0], signature);
1489 } CYCatch(NULL) }
1490
1491 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1492     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1493
1494     sig::Type type;
1495     type.name = NULL;
1496     type.flags = 0;
1497
1498     type.primitive = sig::char_P;
1499     type.data.data.type = NULL;
1500     type.data.data.size = 0;
1501
1502     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1503 } CYCatch(NULL) }
1504
1505 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1506     CYPool pool;
1507     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1508
1509     sig::Type type;
1510     type.name = NULL;
1511     type.flags = 0;
1512
1513     type.primitive = sig::function_P;
1514     sig::Copy(pool, type.data.signature, internal->signature_);
1515
1516     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1517 } CYCatch(NULL) }
1518
1519 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1520     return _this;
1521 } CYCatch(NULL) }
1522
1523 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1524     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1525     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1526 } CYCatch(NULL) }
1527
1528 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1529     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1530 }
1531
1532 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1533     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1534     std::ostringstream str;
1535     Dl_info info;
1536     if (internal->value_ == NULL)
1537         str << "NULL";
1538     else if (dladdr(internal->value_, &info) == 0)
1539         str << internal->value_;
1540     else {
1541         str << info.dli_sname;
1542         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1543         if (offset != 0)
1544             str << "+0x" << std::hex << offset;
1545     }
1546     std::string value(str.str());
1547     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1548 } CYCatch(NULL) }
1549
1550 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1551     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1552
1553     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1554     if (internal->length_ != _not(size_t)) {
1555         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1556         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1557         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1558     } else if (internal->type_->type_ == NULL) pointer: {
1559         CYLocalPool pool;
1560         std::ostringstream str;
1561
1562         sig::Type type;
1563         type.name = NULL;
1564         type.flags = 0;
1565
1566         type.primitive = sig::pointer_P;
1567         type.data.data.type = internal->type_->type_;
1568         type.data.data.size = 0;
1569
1570         CYOptions options;
1571         CYOutput output(*str.rdbuf(), options);
1572         (new(pool) CYTypeExpression(Decode(pool, &type)))->Output(output, CYNoFlags);
1573
1574         str << "(" << internal->value_ << ")";
1575         std::string value(str.str());
1576         return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1577     } else try {
1578         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1579         if (JSValueIsUndefined(context, value))
1580             goto pointer;
1581         CYPool pool;
1582         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1583     } catch (const CYException &e) {
1584         goto pointer;
1585     }
1586 } CYCatch(NULL) }
1587
1588 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1589     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1590     char *string(static_cast<char *>(internal->value_));
1591     return CYCastJSValue(context, strlen(string));
1592 } CYCatch(NULL) }
1593
1594 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1595     sig::Type type;
1596     type.name = NULL;
1597     type.flags = 0;
1598
1599     type.primitive = sig::char_P;
1600     type.data.data.type = NULL;
1601     type.data.data.size = 0;
1602
1603     return CYMakeType(context, &type);
1604 } CYCatch(NULL) }
1605
1606 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1607     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1608     return CYMakeType(context, internal->type_->type_);
1609 } CYCatch(NULL) }
1610
1611 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1612     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1613     const char *string(static_cast<const char *>(internal->value_));
1614     std::ostringstream str;
1615     str << "&";
1616     CYStringify(str, string, strlen(string), true);
1617     std::string value(str.str());
1618     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1619 } CYCatch(NULL) }
1620
1621 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1622     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1623     const char *string(static_cast<const char *>(internal->value_));
1624     return CYCastJSValue(context, string);
1625 } CYCatch(NULL) }
1626
1627 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1628     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1629     return CYMakeType(context, &internal->signature_);
1630 } CYCatch(NULL) }
1631
1632 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1633     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1634     return CYCastJSValue(context, internal->GetFFI()->alignment);
1635 } CYCatch(NULL) }
1636
1637 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1638     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1639     return CYCastJSValue(context, internal->type_->name);
1640 } CYCatch(NULL) }
1641
1642 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1643     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1644     return CYCastJSValue(context, internal->GetFFI()->size);
1645 } CYCatch(NULL) }
1646
1647 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1648     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1649     CYPool pool;
1650     const char *type(sig::Unparse(pool, internal->type_));
1651     return CYCastJSValue(context, CYJSString(type));
1652 } CYCatch(NULL) }
1653
1654 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1655     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1656     CYLocalPool pool;
1657     std::stringbuf out;
1658     CYOptions options;
1659     CYOutput output(out, options);
1660     (new(pool) CYTypeExpression(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1661     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1662 } CYCatch(NULL) }
1663
1664 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1665     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1666 }
1667
1668 static JSStaticFunction CString_staticFunctions[6] = {
1669     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1670     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1671     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1672     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1673     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1674     {NULL, NULL, 0}
1675 };
1676
1677 static JSStaticValue CString_staticValues[3] = {
1678     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1679     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1680     {NULL, NULL, NULL, 0}
1681 };
1682
1683 static JSStaticFunction Pointer_staticFunctions[5] = {
1684     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1685     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1686     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1687     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1688     {NULL, NULL, 0}
1689 };
1690
1691 static JSStaticValue Pointer_staticValues[2] = {
1692     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1693     {NULL, NULL, NULL, 0}
1694 };
1695
1696 static JSStaticFunction Struct_staticFunctions[2] = {
1697     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1698     {NULL, NULL, 0}
1699 };
1700
1701 static JSStaticFunction Functor_staticFunctions[5] = {
1702     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1703     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1704     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1705     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1706     {NULL, NULL, 0}
1707 };
1708
1709 namespace cy {
1710     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1711 }
1712
1713 static JSStaticValue Functor_staticValues[2] = {
1714     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1715     {NULL, NULL, NULL, 0}
1716 };
1717
1718 namespace cy {
1719     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1720 }
1721
1722 static JSStaticValue Type_staticValues[4] = {
1723     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1724     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1725     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1726     {NULL, NULL, NULL, 0}
1727 };
1728
1729 static JSStaticFunction Type_staticFunctions[14] = {
1730     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1731     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1732     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1733     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1734     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1735     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1736     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1737     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1738     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1739     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1740     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1741     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1742     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1743     {NULL, NULL, 0}
1744 };
1745
1746 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1747
1748 _visible void CYSetArgs(int argc, const char *argv[]) {
1749     JSContextRef context(CYGetJSContext());
1750     JSValueRef args[argc];
1751     for (int i(0); i != argc; ++i)
1752         args[i] = CYCastJSValue(context, argv[i]);
1753
1754     JSObjectRef array;
1755     if (JSObjectMakeArray$ != NULL)
1756         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1757     else {
1758         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1759         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1760         array = CYCastJSObject(context, value);
1761     }
1762
1763     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1764     CYSetProperty(context, System, CYJSString("args"), array);
1765 }
1766
1767 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1768     return JSContextGetGlobalObject(context);
1769 }
1770
1771 // XXX: this is neither exceptin safe nor even terribly sane
1772 class ExecutionHandle {
1773   private:
1774     JSContextRef context_;
1775     std::vector<void *> handles_;
1776
1777   public:
1778     ExecutionHandle(JSContextRef context) :
1779         context_(context)
1780     {
1781         handles_.resize(GetHooks().size());
1782         for (size_t i(0); i != GetHooks().size(); ++i) {
1783             CYHook *hook(GetHooks()[i]);
1784             if (hook->ExecuteStart != NULL)
1785                 handles_[i] = (*hook->ExecuteStart)(context_);
1786             else
1787                 handles_[i] = NULL;
1788         }
1789     }
1790
1791     ~ExecutionHandle() {
1792         for (size_t i(GetHooks().size()); i != 0; --i) {
1793             CYHook *hook(GetHooks()[i-1]);
1794             if (hook->ExecuteEnd != NULL)
1795                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1796         }
1797     }
1798 };
1799
1800 static volatile bool cancel_;
1801
1802 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1803     return cancel_;
1804 }
1805
1806 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1807     ExecutionHandle handle(context);
1808
1809     cancel_ = false;
1810     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1811         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1812
1813     try {
1814         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1815         if (JSValueIsUndefined(context, result))
1816             return NULL;
1817
1818         std::set<void *> objects;
1819         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1820         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1821
1822         return json;
1823     } catch (const CYException &error) {
1824         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1825     }
1826 }
1827
1828 _visible void CYCancel() {
1829     cancel_ = true;
1830 }
1831
1832 static const char *CYPoolLibraryPath(CYPool &pool);
1833
1834 static bool initialized_ = false;
1835
1836 void CYInitializeDynamic() {
1837     if (!initialized_)
1838         initialized_ = true;
1839     else return;
1840
1841     CYPool pool;
1842     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1843     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1844
1845     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1846     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1847
1848     JSClassDefinition definition;
1849
1850     definition = kJSClassDefinitionEmpty;
1851     definition.className = "All";
1852     definition.hasProperty = &All_hasProperty;
1853     definition.getProperty = &All_getProperty;
1854     definition.getPropertyNames = &All_getPropertyNames;
1855     All_ = JSClassCreate(&definition);
1856
1857     definition = kJSClassDefinitionEmpty;
1858     definition.className = "Context";
1859     definition.finalize = &CYFinalize;
1860     Context_ = JSClassCreate(&definition);
1861
1862     definition = kJSClassDefinitionEmpty;
1863     definition.className = "CString";
1864     definition.staticFunctions = CString_staticFunctions;
1865     definition.staticValues = CString_staticValues;
1866     definition.getProperty = &CString_getProperty;
1867     definition.setProperty = &CString_setProperty;
1868     definition.finalize = &CYFinalize;
1869     CString_ = JSClassCreate(&definition);
1870
1871     definition = kJSClassDefinitionEmpty;
1872     definition.className = "Functor";
1873     definition.staticFunctions = cy::Functor::StaticFunctions;
1874     definition.staticValues = Functor_staticValues;
1875     definition.callAsFunction = &Functor_callAsFunction;
1876     definition.finalize = &CYFinalize;
1877     Functor_ = JSClassCreate(&definition);
1878
1879     definition = kJSClassDefinitionEmpty;
1880     definition.className = "Pointer";
1881     definition.staticFunctions = Pointer_staticFunctions;
1882     definition.staticValues = Pointer_staticValues;
1883     definition.callAsFunction = &Pointer_callAsFunction;
1884     definition.getProperty = &Pointer_getProperty;
1885     definition.setProperty = &Pointer_setProperty;
1886     definition.finalize = &CYFinalize;
1887     Pointer_ = JSClassCreate(&definition);
1888
1889     definition = kJSClassDefinitionEmpty;
1890     definition.className = "Struct";
1891     definition.staticFunctions = Struct_staticFunctions;
1892     definition.getProperty = &Struct_getProperty;
1893     definition.setProperty = &Struct_setProperty;
1894     definition.getPropertyNames = &Struct_getPropertyNames;
1895     definition.finalize = &CYFinalize;
1896     Struct_ = JSClassCreate(&definition);
1897
1898     definition = kJSClassDefinitionEmpty;
1899     definition.className = "Type";
1900     definition.staticValues = Type_staticValues;
1901     definition.staticFunctions = Type_staticFunctions;
1902     definition.callAsFunction = &Type_callAsFunction;
1903     definition.callAsConstructor = &Type_callAsConstructor;
1904     definition.finalize = &CYFinalize;
1905     Type_privateData::Class_ = JSClassCreate(&definition);
1906
1907     definition = kJSClassDefinitionEmpty;
1908     definition.className = "Global";
1909     //definition.getProperty = &Global_getProperty;
1910     Global_ = JSClassCreate(&definition);
1911
1912     Array_s = JSStringCreateWithUTF8CString("Array");
1913     cy_s = JSStringCreateWithUTF8CString("$cy");
1914     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1915     length_s = JSStringCreateWithUTF8CString("length");
1916     message_s = JSStringCreateWithUTF8CString("message");
1917     name_s = JSStringCreateWithUTF8CString("name");
1918     pop_s = JSStringCreateWithUTF8CString("pop");
1919     prototype_s = JSStringCreateWithUTF8CString("prototype");
1920     push_s = JSStringCreateWithUTF8CString("push");
1921     splice_s = JSStringCreateWithUTF8CString("splice");
1922     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1923     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1924     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1925     toString_s = JSStringCreateWithUTF8CString("toString");
1926     weak_s = JSStringCreateWithUTF8CString("weak");
1927
1928     Result_ = JSStringCreateWithUTF8CString("_");
1929
1930     for (CYHook *hook : GetHooks())
1931         if (hook->Initialize != NULL)
1932             (*hook->Initialize)();
1933 }
1934
1935 void CYThrow(JSContextRef context, JSValueRef value) {
1936     if (value != NULL)
1937         throw CYJSError(context, value);
1938 }
1939
1940 const char *CYJSError::PoolCString(CYPool &pool) const {
1941     std::set<void *> objects;
1942     // XXX: this used to be CYPoolCString
1943     return CYPoolCCYON(pool, context_, value_, objects);
1944 }
1945
1946 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
1947     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
1948     return value_;
1949 }
1950
1951 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
1952     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
1953     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1954     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1955 }
1956
1957 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
1958     return CYCastJSError(context, name, message_);
1959 }
1960
1961 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1962     _assert(context != NULL);
1963
1964     CYPool pool;
1965
1966     va_list args;
1967     va_start(args, format);
1968     // XXX: there might be a beter way to think about this
1969     const char *message(pool.vsprintf(64, format, args));
1970     va_end(args);
1971
1972     value_ = CYCastJSError(context, "Error", message);
1973 }
1974
1975 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1976     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1977 }
1978
1979 struct CYFile {
1980     void *data_;
1981     size_t size_;
1982
1983     CYFile(void *data, size_t size) :
1984         data_(data),
1985         size_(size)
1986     {
1987     }
1988 };
1989
1990 static void CYFileExit(void *data) {
1991     CYFile *file(reinterpret_cast<CYFile *>(data));
1992     _syscall(munmap(file->data_, file->size_));
1993 }
1994
1995 static void *CYPoolFile(CYPool &pool, const char *path, size_t *psize) {
1996     int fd(_syscall_(open(path, O_RDONLY), 1, ENOENT));
1997     if (fd == -1)
1998         return NULL;
1999
2000     struct stat stat;
2001     _syscall(fstat(fd, &stat));
2002     size_t size(stat.st_size);
2003
2004     *psize = size;
2005
2006     void *base;
2007     if (size == 0)
2008         base = pool.strndup("", 0);
2009     else {
2010         _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
2011
2012         CYFile *file(new (pool) CYFile(base, size));
2013         pool.atexit(&CYFileExit, file);
2014     }
2015
2016     _syscall(close(fd));
2017     return base;
2018 }
2019
2020 static CYUTF8String CYPoolFileUTF8String(CYPool &pool, const char *path) {
2021     CYUTF8String data;
2022     data.data = reinterpret_cast<char *>(CYPoolFile(pool, path, &data.size));
2023     return data;
2024 }
2025
2026 static const char *CYPoolLibraryPath(CYPool &pool) {
2027     Dl_info addr;
2028     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2029     char *lib(pool.strdup(addr.dli_fname));
2030
2031     char *slash(strrchr(lib, '/'));
2032     _assert(slash != NULL);
2033     *slash = '\0';
2034
2035     return lib;
2036 }
2037
2038 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2039     _assert(count == 1);
2040     CYPool pool;
2041
2042     const char *name(CYPoolCString(pool, context, arguments[0]));
2043     if (strchr(name, '/') == NULL && (
2044 #ifdef __APPLE__
2045         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2046         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2047 #endif
2048     false))
2049         return CYJSUndefined(context);
2050
2051     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2052     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2053
2054     CYJSString property("exports");
2055
2056     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2057     JSValueRef cache(CYGetProperty(context, modules, path));
2058
2059     JSValueRef result;
2060     if (!JSValueIsUndefined(context, cache)) {
2061         JSObjectRef module(CYCastJSObject(context, cache));
2062         result = CYGetProperty(context, module, property);
2063     } else {
2064         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2065         _assert(code.data != NULL);
2066
2067         size_t length(strlen(name));
2068         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2069             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2070             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2071             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2072             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2073         } else {
2074             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2075             CYSetProperty(context, modules, path, module);
2076
2077             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2078             CYSetProperty(context, module, property, exports);
2079
2080             std::stringstream wrap;
2081             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2082             code = CYPoolCode(pool, *wrap.rdbuf());
2083
2084             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2085             JSObjectRef function(CYCastJSObject(context, value));
2086
2087             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2088             CYCallAsFunction(context, function, NULL, 4, arguments);
2089             result = CYGetProperty(context, module, property);
2090         }
2091     }
2092
2093     return result;
2094 } CYCatch(NULL) }
2095
2096 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2097     CYPool pool;
2098     CYUTF8String code(CYPoolFileUTF8String(pool, path));
2099     if (code.data == NULL)
2100         return false;
2101
2102     code = CYPoolCode(pool, code);
2103     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2104     return true;
2105 }
2106
2107 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2108 }
2109
2110 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2111     CYInitializeDynamic();
2112
2113     JSObjectRef global(CYGetGlobalObject(context));
2114
2115     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2116     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2117
2118 /* Cache Globals {{{ */
2119     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2120     CYSetProperty(context, cy, CYJSString("Array"), Array);
2121
2122     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2123     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2124
2125     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2126     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2127
2128     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2129     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2130
2131     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2132     CYSetProperty(context, cy, CYJSString("Error"), Error);
2133
2134     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2135     CYSetProperty(context, cy, CYJSString("Function"), Function);
2136
2137     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2138     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2139
2140     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2141     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2142
2143     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2144     CYSetProperty(context, cy, CYJSString("Number"), Number);
2145
2146     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2147     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2148
2149     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2150     CYSetProperty(context, cy, CYJSString("Object"), Object);
2151
2152     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2153     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2154
2155     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2156     CYSetProperty(context, cy, CYJSString("String"), String);
2157
2158     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2159     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2160
2161     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2162     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2163 /* }}} */
2164
2165     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2166     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2167
2168     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2169     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2170     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2171     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2172
2173     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2174     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2175     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2176
2177     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2178     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2179     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2180
2181     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2182     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2183
2184     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2185     CYSetProperty(context, cy, CYJSString("modules"), modules);
2186
2187     JSObjectRef all(JSObjectMake(context, All_, NULL));
2188     CYSetProperty(context, cycript, CYJSString("all"), all);
2189
2190     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2191     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2192
2193     if (true) {
2194         JSObjectRef last(NULL), curr(global);
2195
2196         goto next; for (JSValueRef next;;) {
2197             if (JSValueIsNull(context, next))
2198                 break;
2199             last = curr;
2200             curr = CYCastJSObject(context, next);
2201           next:
2202             next = JSObjectGetPrototype(context, curr);
2203         }
2204
2205         CYSetPrototype(context, last, all);
2206     }
2207
2208     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2209     CYSetProperty(context, cy, CYJSString("System"), System);
2210
2211     CYSetProperty(context, all, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2212
2213     CYSetProperty(context, global, CYJSString("system"), System);
2214     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2215     CYSetProperty(context, System, CYJSString("print"), &System_print);
2216
2217     CYSetProperty(context, global, CYJSString("global"), global);
2218
2219 #ifdef __APPLE__
2220     if (&JSWeakObjectMapCreate != NULL) {
2221         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2222         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2223     }
2224 #endif
2225
2226     CYSetProperty(context, global, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2227     CYSetProperty(context, global, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2228     CYSetProperty(context, global, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2229
2230     CYSetProperty(context, global, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2231
2232     CYSetProperty(context, global, CYJSString("bool"), CYMakeType(context, "B"), kJSPropertyAttributeDontEnum);
2233     CYSetProperty(context, global, CYJSString("char"), CYMakeType(context, "c"), kJSPropertyAttributeDontEnum);
2234     CYSetProperty(context, global, CYJSString("short"), CYMakeType(context, "s"), kJSPropertyAttributeDontEnum);
2235     CYSetProperty(context, global, CYJSString("int"), CYMakeType(context, "i"), kJSPropertyAttributeDontEnum);
2236     CYSetProperty(context, global, CYJSString("long"), CYMakeType(context, "l"), kJSPropertyAttributeDontEnum);
2237     CYSetProperty(context, global, CYJSString("float"), CYMakeType(context, "f"), kJSPropertyAttributeDontEnum);
2238     CYSetProperty(context, global, CYJSString("double"), CYMakeType(context, "d"), kJSPropertyAttributeDontEnum);
2239
2240     CYRunScript(context, "libcycript.cy");
2241
2242     for (CYHook *hook : GetHooks())
2243         if (hook->SetupContext != NULL)
2244             (*hook->SetupContext)(context);
2245
2246     CYArrayPush(context, alls, cycript);
2247 }
2248
2249 static JSGlobalContextRef context_;
2250
2251 _visible JSGlobalContextRef CYGetJSContext() {
2252     CYInitializeDynamic();
2253
2254     if (context_ == NULL) {
2255         context_ = JSGlobalContextCreate(Global_);
2256         CYSetupContext(context_);
2257     }
2258
2259     return context_;
2260 }
2261
2262 _visible void CYDestroyContext() {
2263     if (context_ == NULL)
2264         return;
2265     JSGlobalContextRelease(context_);
2266     context_ = NULL;
2267 }