Execute.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #include <iostream>
  25 #include <set>
  26 #include <map>
  27 #include <iomanip>
  28 #include <sstream>
  29 #include <cmath>
  30
  31 #include <dlfcn.h>
  32 #include <dirent.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35
  36 #include <sys/mman.h>
  37 #include <sys/stat.h>
  38
  39 #include <sqlite3.h>
  40
  41 #include "sig/parse.hpp"
  42 #include "sig/ffi_type.hpp"
  43
  44 #include "Code.hpp"
  45 #include "Decode.hpp"
  46 #include "Error.hpp"
  47 #include "Execute.hpp"
  48 #include "Internal.hpp"
  49 #include "JavaScript.hpp"
  50 #include "Pooling.hpp"
  51 #include "String.hpp"
  52
  53 const char *sqlite3_column_string(sqlite3_stmt *stmt, int n) {
  54     return reinterpret_cast<const char *>(sqlite3_column_text(stmt, n));
  55 }
  56
  57 char *sqlite3_column_pooled(CYPool &pool, sqlite3_stmt *stmt, int n) {
  58     if (const char *value = sqlite3_column_string(stmt, n))
  59         return pool.strdup(value);
  60     else return NULL;
  61 }
  62
  63 static std::vector<CYHook *> &GetHooks() {
  64     static std::vector<CYHook *> hooks;
  65     return hooks;
  66 }
  67
  68 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  69     GetHooks().push_back(hook);
  70 }
  71
  72 /* JavaScript Properties {{{ */
  73 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  74     return JSObjectHasProperty(context, object, name);
  75 }
  76
  77 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  78     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  79 }
  80
  81 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  82     return _jsccall(JSObjectGetProperty, context, object, name);
  83 }
  84
  85 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  86     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  87 }
  88
  89 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  90     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  91 }
  92
  93 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  94     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  95 }
  96
  97 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  98     JSObjectSetPrototype(context, object, value);
  99     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
 100 }
 101 /* }}} */
 102 /* JavaScript Strings {{{ */
 103 JSStringRef CYCopyJSString(const char *value) {
 104     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 105 }
 106
 107 JSStringRef CYCopyJSString(JSStringRef value) {
 108     return value == NULL ? NULL : JSStringRetain(value);
 109 }
 110
 111 JSStringRef CYCopyJSString(CYUTF8String value) {
 112     if (memchr(value.data, '\0', value.size) != NULL) {
 113         CYPool pool;
 114         return CYCopyJSString(pool.memdup(value.data, value.size));
 115     } else if (value.data[value.size] != '\0') {
 116         CYPool pool;
 117         return CYCopyJSString(CYPoolUTF16String(pool, value));
 118     } else {
 119         return CYCopyJSString(value.data);
 120     }
 121 }
 122
 123 JSStringRef CYCopyJSString(CYUTF16String value) {
 124     return JSStringCreateWithCharacters(value.data, value.size);
 125 }
 126
 127 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 128     if (JSValueIsNull(context, value))
 129         return NULL;
 130     return _jsccall(JSValueToStringCopy, context, value);
 131 }
 132
 133 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 134     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 135 }
 136
 137 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 138     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 139 }
 140
 141 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 142     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 143     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 144     return utf8.data;
 145 }
 146
 147 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 148     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 149 }
 150 /* }}} */
 151 /* Index Offsets {{{ */
 152 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 153     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 154 }
 155 /* }}} */
 156
 157 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 158
 159 static JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 160     if (JSObjectMakeArray$ != NULL)
 161         return _jsccall(*JSObjectMakeArray$, context, length, values);
 162     else {
 163         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 164         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 165         return CYCastJSObject(context, value);
 166     }
 167 }
 168
 169 static JSClassRef All_;
 170 static JSClassRef Context_;
 171 static JSClassRef CString_;
 172 JSClassRef Functor_;
 173 static JSClassRef Global_;
 174 static JSClassRef Pointer_;
 175 static JSClassRef Struct_;
 176
 177 JSStringRef Array_s;
 178 JSStringRef cy_s;
 179 JSStringRef cyi_s;
 180 JSStringRef length_s;
 181 JSStringRef message_s;
 182 JSStringRef name_s;
 183 JSStringRef pop_s;
 184 JSStringRef prototype_s;
 185 JSStringRef push_s;
 186 JSStringRef splice_s;
 187 JSStringRef toCYON_s;
 188 JSStringRef toJSON_s;
 189 JSStringRef toPointer_s;
 190 JSStringRef toString_s;
 191 JSStringRef weak_s;
 192
 193 static sqlite3 *database_;
 194
 195 static JSStringRef Result_;
 196
 197 void CYFinalize(JSObjectRef object) {
 198     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 199     _assert(internal->count_ != _not(unsigned));
 200     if (--internal->count_ == 0)
 201         delete internal;
 202 }
 203
 204 void Structor_(CYPool &pool, sig::Type *&type) {
 205     if (
 206         type->primitive == sig::pointer_P &&
 207         type->data.data.type->primitive == sig::struct_P &&
 208         type->data.data.type->name != NULL &&
 209         strcmp(type->data.data.type->name, "_objc_class") == 0
 210     ) {
 211         type->primitive = sig::typename_P;
 212         type->data.data.type = NULL;
 213         return;
 214     }
 215
 216     if (type->primitive != sig::struct_P || type->name == NULL)
 217         return;
 218
 219     //_assert(false);
 220 }
 221
 222 JSClassRef Type_privateData::Class_;
 223
 224 struct Context :
 225     CYData
 226 {
 227     JSGlobalContextRef context_;
 228
 229     Context(JSGlobalContextRef context) :
 230         context_(context)
 231     {
 232     }
 233 };
 234
 235 struct CString :
 236     CYOwned
 237 {
 238     CString(char *value, JSContextRef context, JSObjectRef owner) :
 239         CYOwned(value, context, owner)
 240     {
 241     }
 242 };
 243
 244 struct Pointer :
 245     CYOwned
 246 {
 247     Type_privateData *type_;
 248     size_t length_;
 249
 250     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 251         CYOwned(value, context, owner),
 252         type_(new(*pool_) Type_privateData(type)),
 253         length_(length)
 254     {
 255     }
 256
 257     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, const char *encoding) :
 258         CYOwned(value, context, owner),
 259         type_(new(*pool_) Type_privateData(encoding)),
 260         length_(length)
 261     {
 262     }
 263 };
 264
 265 struct Struct_privateData :
 266     CYOwned
 267 {
 268     Type_privateData *type_;
 269
 270     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 271         CYOwned(NULL, context, owner)
 272     {
 273     }
 274 };
 275
 276 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 277     Struct_privateData *internal(new Struct_privateData(context, owner));
 278     CYPool &pool(*internal->pool_);
 279     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 280     internal->type_ = typical;
 281
 282     if (owner != NULL)
 283         internal->value_ = data;
 284     else {
 285         size_t size(typical->GetFFI()->size);
 286         void *copy(internal->pool_->malloc<void>(size));
 287         memcpy(copy, data, size);
 288         internal->value_ = copy;
 289     }
 290
 291     return JSObjectMake(context, Struct_, internal);
 292 }
 293
 294 static void *CYCastSymbol(const char *name) {
 295     for (CYHook *hook : GetHooks())
 296         if (hook->CastSymbol != NULL)
 297             if (void *value = (*hook->CastSymbol)(name))
 298                 return value;
 299     return dlsym(RTLD_DEFAULT, name);
 300 }
 301
 302 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 303     return JSValueMakeBoolean(context, value);
 304 }
 305
 306 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 307     return JSValueMakeNumber(context, value);
 308 }
 309
 310 #define CYCastJSValue_(Type_) \
 311     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 312         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 313         return JSValueMakeNumber(context, static_cast<double>(value)); \
 314     }
 315
 316 CYCastJSValue_(int)
 317 CYCastJSValue_(unsigned int)
 318 CYCastJSValue_(long int)
 319 CYCastJSValue_(long unsigned int)
 320 CYCastJSValue_(long long int)
 321 CYCastJSValue_(long long unsigned int)
 322
 323 JSValueRef CYJSUndefined(JSContextRef context) {
 324     return JSValueMakeUndefined(context);
 325 }
 326
 327 double CYCastDouble(JSContextRef context, JSValueRef value) {
 328     return _jsccall(JSValueToNumber, context, value);
 329 }
 330
 331 bool CYCastBool(JSContextRef context, JSValueRef value) {
 332     return JSValueToBoolean(context, value);
 333 }
 334
 335 JSValueRef CYJSNull(JSContextRef context) {
 336     return JSValueMakeNull(context);
 337 }
 338
 339 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 340     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 341 }
 342
 343 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 344     return CYCastJSValue(context, CYJSString(value));
 345 }
 346
 347 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 348     return _jsccall(JSValueToObject, context, value);
 349 }
 350
 351 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 352     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 353 }
 354
 355 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 356     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 357 }
 358
 359 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 360     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 361 }
 362
 363 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 364     return JSValueIsStrictEqual(context, lhs, rhs);
 365 }
 366
 367 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 368     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 369 }
 370
 371 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 372     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 373 }
 374
 375 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 376     JSValueRef arguments[1];
 377     arguments[0] = value;
 378     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 379     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 380 }
 381
 382 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 383     FILE *file(stdout);
 384
 385     if (count == 0)
 386         fputc('\n', file);
 387     else {
 388         CYPool pool;
 389         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 390         fwrite(string.data, string.size, 1, file);
 391     }
 392
 393     fflush(file);
 394     return CYJSUndefined(context);
 395 } CYCatch(NULL) }
 396
 397 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 398
 399 _visible void CYGarbageCollect(JSContextRef context) {
 400     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 401 }
 402
 403 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 404     CYPool pool;
 405     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 406     std::stringbuf value(std::string(before.data, before.size));
 407     CYUTF8String after(CYPoolCode(pool, value));
 408     return CYCastJSValue(context, CYJSString(after));
 409 } CYCatch_(NULL, "SyntaxError") }
 410
 411 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 412     CYGarbageCollect(context);
 413     return CYJSUndefined(context);
 414 } CYCatch(NULL) }
 415
 416 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 417     switch (JSType type = JSValueGetType(context, value)) {
 418         case kJSTypeUndefined:
 419             return "undefined";
 420         case kJSTypeNull:
 421             return "null";
 422         case kJSTypeBoolean:
 423             return CYCastBool(context, value) ? "true" : "false";
 424
 425         case kJSTypeNumber: {
 426             std::ostringstream str;
 427             CYNumerify(str, CYCastDouble(context, value));
 428             std::string value(str.str());
 429             return pool.strmemdup(value.c_str(), value.size());
 430         } break;
 431
 432         case kJSTypeString: {
 433             std::ostringstream str;
 434             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 435             CYStringify(str, string.data, string.size);
 436             std::string value(str.str());
 437             return pool.strmemdup(value.c_str(), value.size());
 438         } break;
 439
 440         case kJSTypeObject:
 441             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 442         default:
 443             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 444     }
 445 } CYCatch(NULL) }
 446
 447 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 448     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 449 }
 450
 451 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 452     if (objects != NULL)
 453         return CYPoolCCYON(pool, context, value, *objects);
 454     else {
 455         std::set<void *> objects;
 456         return CYPoolCCYON(pool, context, value, objects);
 457     }
 458 }
 459
 460 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 461     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 462     if (CYIsCallable(context, toCYON)) {
 463         // XXX: this needs to be abstracted behind some kind of function
 464         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 465         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 466         _assert(value != NULL);
 467         return CYPoolCString(pool, context, value);
 468     }
 469
 470     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 471     if (CYIsCallable(context, toJSON)) {
 472         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 473         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 474     }
 475
 476     if (JSObjectIsFunction(context, object)) {
 477         JSValueRef toString(CYGetProperty(context, object, toString_s));
 478         if (CYIsCallable(context, toString)) {
 479             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 480             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 481             _assert(value != NULL);
 482             return CYPoolCString(pool, context, value);
 483         }
 484     }
 485
 486     _assert(objects.insert(object).second);
 487
 488     std::ostringstream str;
 489
 490     str << '{';
 491
 492     // XXX: this is, sadly, going to leak
 493     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 494
 495     bool comma(false);
 496
 497     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 498         if (comma)
 499             str << ',';
 500         else
 501             comma = true;
 502
 503         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 504         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 505
 506         if (CYIsKey(string))
 507             str << string.data;
 508         else
 509             CYStringify(str, string.data, string.size);
 510
 511         str << ':';
 512
 513         try {
 514             JSValueRef value(CYGetProperty(context, object, name));
 515             str << CYPoolCCYON(pool, context, value, objects);
 516         } catch (const CYException &error) {
 517             str << "@error";
 518         }
 519     }
 520
 521     JSPropertyNameArrayRelease(names);
 522
 523     str << '}';
 524
 525     std::string string(str.str());
 526     return pool.strmemdup(string.c_str(), string.size());
 527 }
 528
 529 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 530     if (count == 0)
 531         return NULL;
 532     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 533 }
 534
 535 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 536     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 537     // XXX: this is horribly inefficient
 538     std::set<void *> backup;
 539     if (objects == NULL)
 540         objects = &backup;
 541
 542     CYPool pool;
 543     std::ostringstream str;
 544
 545     str << '[';
 546
 547     JSValueRef length(CYGetProperty(context, _this, length_s));
 548     bool comma(false);
 549
 550     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 551         if (comma)
 552             str << ',';
 553         else
 554             comma = true;
 555
 556         try {
 557             JSValueRef value(CYGetProperty(context, _this, index));
 558             if (!JSValueIsUndefined(context, value))
 559                 str << CYPoolCCYON(pool, context, value, *objects);
 560             else {
 561                 str << ',';
 562                 comma = false;
 563             }
 564         } catch (const CYException &error) {
 565             str << "@error";
 566         }
 567     }
 568
 569     str << ']';
 570
 571     std::string value(str.str());
 572     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 573 } CYCatch(NULL) }
 574
 575 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 576     CYPool pool;
 577     std::ostringstream str;
 578
 579     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 580     CYStringify(str, string.data, string.size);
 581
 582     std::string value(str.str());
 583     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 584 } CYCatch(NULL) }
 585
 586 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 587     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 588     return JSObjectMake(context, Pointer_, internal);
 589 }
 590
 591 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, const char *encoding, JSObjectRef owner) {
 592     Pointer *internal(new Pointer(pointer, context, owner, length, encoding));
 593     return JSObjectMake(context, Pointer_, internal);
 594 }
 595
 596 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 597     CString *internal(new CString(pointer, context, owner));
 598     return JSObjectMake(context, CString_, internal);
 599 }
 600
 601 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 602     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 603 }
 604
 605 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 606     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 607     if (function == NULL)
 608         return NULL;
 609
 610     cy::Functor *internal(new cy::Functor(encoding, function));
 611     ++internal->count_;
 612     return JSObjectMake(context, Functor_, internal);
 613 }
 614
 615 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 616     return CYGetOffset(CYPoolCString(pool, context, value), index);
 617 }
 618
 619 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 620     if (value == NULL)
 621         return NULL;
 622     else switch (JSValueGetType(context, value)) {
 623         case kJSTypeNull:
 624             return NULL;
 625         case kJSTypeObject: {
 626             JSObjectRef object((JSObjectRef) value);
 627             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 628                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 629                 return internal->value_;
 630             }
 631             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 632             if (CYIsCallable(context, toPointer)) {
 633                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 634                 _assert(value != NULL);
 635                 return CYCastPointer_(context, value, guess);
 636             }
 637         } default:
 638             if (guess != NULL)
 639                 *guess = true;
 640         case kJSTypeNumber:
 641             double number(CYCastDouble(context, value));
 642             if (!std::isnan(number))
 643                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 644             if (guess == NULL)
 645                 throw CYJSError(context, "cannot convert value to pointer");
 646             else {
 647                 *guess = true;
 648                 return NULL;
 649             }
 650     }
 651 }
 652
 653 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 654     switch (type->primitive) {
 655         case sig::boolean_P:
 656             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 657         break;
 658
 659 #define CYPoolFFI_(primitive, native) \
 660         case sig::primitive ## _P: \
 661             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 662         break;
 663
 664         CYPoolFFI_(uchar, unsigned char)
 665         CYPoolFFI_(schar, signed char)
 666         CYPoolFFI_(ushort, unsigned short)
 667         CYPoolFFI_(short, short)
 668         CYPoolFFI_(ulong, unsigned long)
 669         CYPoolFFI_(long, long)
 670         CYPoolFFI_(uint, unsigned int)
 671         CYPoolFFI_(int, int)
 672         CYPoolFFI_(ulonglong, unsigned long long)
 673         CYPoolFFI_(longlong, long long)
 674         CYPoolFFI_(float, float)
 675         CYPoolFFI_(double, double)
 676
 677         case sig::array_P: {
 678             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 679             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 680             for (size_t index(0); index != type->data.data.size; ++index) {
 681                 ffi_type *field(ffi->elements[index]);
 682
 683                 JSValueRef rhs;
 684                 if (aggregate == NULL)
 685                     rhs = value;
 686                 else {
 687                     rhs = CYGetProperty(context, aggregate, index);
 688                     if (JSValueIsUndefined(context, rhs))
 689                         throw CYJSError(context, "unable to extract array value");
 690                 }
 691
 692                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 693                 // XXX: alignment?
 694                 base += field->size;
 695             }
 696         } break;
 697
 698         case sig::pointer_P:
 699             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 700         break;
 701
 702         case sig::string_P: {
 703             bool guess(false);
 704             *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 705             if (guess && pool != NULL)
 706                 *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 707         } break;
 708
 709         case sig::struct_P: {
 710             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 711             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 712             for (size_t index(0); index != type->data.signature.count; ++index) {
 713                 sig::Element *element(&type->data.signature.elements[index]);
 714                 ffi_type *field(ffi->elements[index]);
 715
 716                 JSValueRef rhs;
 717                 if (aggregate == NULL)
 718                     rhs = value;
 719                 else {
 720                     rhs = CYGetProperty(context, aggregate, index);
 721                     if (JSValueIsUndefined(context, rhs)) {
 722                         if (element->name != NULL)
 723                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 724                         else
 725                             goto undefined;
 726                         if (JSValueIsUndefined(context, rhs)) undefined:
 727                             throw CYJSError(context, "unable to extract structure value");
 728                     }
 729                 }
 730
 731                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 732                 // XXX: alignment?
 733                 base += field->size;
 734             }
 735         } break;
 736
 737         case sig::void_P:
 738         break;
 739
 740         // XXX: implement a conversion from a single character string?
 741         CYPoolFFI_(char, char)
 742
 743         default:
 744             for (CYHook *hook : GetHooks())
 745                 if (hook->PoolFFI != NULL)
 746                     if ((*hook->PoolFFI)(pool, context, type, ffi, data, value))
 747                         return;
 748
 749             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 750     }
 751 }
 752
 753 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 754     switch (type->primitive) {
 755         case sig::boolean_P:
 756             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 757
 758 #define CYFromFFI_(primitive, native) \
 759         case sig::primitive ## _P: \
 760             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 761
 762         CYFromFFI_(uchar, unsigned char)
 763         CYFromFFI_(schar, signed char)
 764         CYFromFFI_(ushort, unsigned short)
 765         CYFromFFI_(short, short)
 766         CYFromFFI_(ulong, unsigned long)
 767         CYFromFFI_(long, long)
 768         CYFromFFI_(uint, unsigned int)
 769         CYFromFFI_(int, int)
 770         CYFromFFI_(ulonglong, unsigned long long)
 771         CYFromFFI_(longlong, long long)
 772         CYFromFFI_(float, float)
 773         CYFromFFI_(double, double)
 774
 775         case sig::array_P:
 776             if (void *pointer = data)
 777                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 778             else goto null;
 779
 780         case sig::pointer_P:
 781             if (void *pointer = *reinterpret_cast<void **>(data))
 782                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 783             else goto null;
 784
 785         case sig::string_P:
 786             if (char *pointer = *reinterpret_cast<char **>(data))
 787                 return CYMakeCString(context, pointer, owner);
 788             else goto null;
 789
 790         case sig::struct_P:
 791             return CYMakeStruct(context, data, type, ffi, owner);
 792         case sig::void_P:
 793             return CYJSUndefined(context);
 794
 795         CYFromFFI_(char, char)
 796
 797         null:
 798             return CYJSNull(context);
 799         default:
 800             for (CYHook *hook : GetHooks())
 801                 if (hook->FromFFI != NULL)
 802                     if (JSValueRef value = (*hook->FromFFI)(context, type, ffi, data, initialize, owner))
 803                         return value;
 804
 805             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 806     }
 807 }
 808
 809 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 810     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 811
 812     JSContextRef context(internal->context_);
 813
 814     size_t count(internal->cif_.nargs);
 815     JSValueRef values[count];
 816
 817     for (size_t index(0); index != count; ++index)
 818         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 819
 820     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 821     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 822 }
 823
 824 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 825     return CYCallAsFunction(context, function, NULL, count, values);
 826 }
 827
 828 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 829     // XXX: in case of exceptions this will leak
 830     // XXX: in point of fact, this may /need/ to leak :(
 831     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 832
 833 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 834     void *executable;
 835     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 836
 837     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 838     _assert(status == FFI_OK);
 839
 840     internal->value_ = executable;
 841 #else
 842     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 843         NULL, sizeof(ffi_closure),
 844         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 845         -1, 0
 846     )));
 847
 848     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 849     _assert(status == FFI_OK);
 850
 851     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 852
 853     internal->value_ = closure;
 854 #endif
 855
 856     return internal;
 857 }
 858
 859 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 860     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 861     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 862     // XXX: see above notes about needing to leak
 863     JSValueProtect(CYGetJSContext(context), object);
 864     return object;
 865 }
 866
 867 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 868     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 869 }
 870
 871 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 872     return CYCastJSObject(context, CYGetCachedValue(context, name));
 873 }
 874
 875 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 876     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 877
 878     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 879     if (function) {
 880         JSObjectRef function(CYCastJSObject(context, value));
 881         return CYMakeFunctor(context, function, signature);
 882     } else {
 883         void (*function)()(CYCastPointer<void (*)()>(context, value));
 884         return CYMakeFunctor(context, function, signature);
 885     }
 886 }
 887
 888 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 889     CYPool pool;
 890     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 891     char *string(static_cast<char *>(internal->value_));
 892
 893     ssize_t offset;
 894     if (!CYGetOffset(pool, context, property, offset))
 895         return NULL;
 896
 897     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 898 } CYCatch(NULL) }
 899
 900 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 901     CYPool pool;
 902     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 903     char *string(static_cast<char *>(internal->value_));
 904
 905     ssize_t offset;
 906     if (!CYGetOffset(pool, context, property, offset))
 907         return false;
 908
 909     const char *data(CYPoolCString(pool, context, value));
 910     string[offset] = *data;
 911     return true;
 912 } CYCatch(false) }
 913
 914 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 915     Type_privateData *typical(internal->type_);
 916     sig::Type *type(typical->type_);
 917     if (type == NULL)
 918         return false;
 919
 920     const char *name(CYPoolCString(pool, context, property));
 921     size_t length(strlen(name));
 922     double number(CYCastDouble(name, length));
 923
 924     size_t count(type->data.signature.count);
 925
 926     if (std::isnan(number)) {
 927         if (property == NULL)
 928             return false;
 929
 930         sig::Element *elements(type->data.signature.elements);
 931
 932         for (size_t local(0); local != count; ++local) {
 933             sig::Element *element(&elements[local]);
 934             if (element->name != NULL && strcmp(name, element->name) == 0) {
 935                 index = local;
 936                 goto base;
 937             }
 938         }
 939
 940         return false;
 941     } else {
 942         index = static_cast<ssize_t>(number);
 943         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 944             return false;
 945     }
 946
 947   base:
 948     ffi_type **elements(typical->GetFFI()->elements);
 949
 950     size_t offset(0);
 951     for (ssize_t local(0); local != index; ++local) {
 952         offset += elements[local]->size;
 953         CYAlign(offset, elements[local + 1]->alignment);
 954     }
 955
 956     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
 957     return true;
 958 }
 959
 960 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 961     CYPool pool;
 962     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 963
 964     if (JSStringIsEqual(property, length_s))
 965         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 966
 967     Type_privateData *typical(internal->type_);
 968     if (typical->type_ == NULL)
 969         return NULL;
 970     sig::Type &type(*typical->type_);
 971
 972     ssize_t offset;
 973     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 974         offset = 0;
 975     else if (!CYGetOffset(pool, context, property, offset))
 976         return NULL;
 977
 978     if (type.primitive == sig::function_P)
 979         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 980
 981     ffi_type *ffi(typical->GetFFI());
 982
 983     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 984     base += ffi->size * offset;
 985
 986     JSObjectRef owner(internal->GetOwner() ?: object);
 987     return CYFromFFI(context, &type, ffi, base, false, owner);
 988 } CYCatch(NULL) }
 989
 990 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 991     CYPool pool;
 992     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 993     Type_privateData *typical(internal->type_);
 994
 995     if (typical->type_ == NULL)
 996         return false;
 997
 998     ssize_t offset;
 999     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1000         offset = 0;
1001     else if (!CYGetOffset(pool, context, property, offset))
1002         return false;
1003
1004     ffi_type *ffi(typical->GetFFI());
1005
1006     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
1007     base += ffi->size * offset;
1008
1009     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
1010     return true;
1011 } CYCatch(false) }
1012
1013 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1014     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1015     Type_privateData *typical(internal->type_);
1016     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
1017 } CYCatch(NULL) }
1018
1019 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1020     CYPool pool;
1021     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1022     Type_privateData *typical(internal->type_);
1023
1024     ssize_t index;
1025     uint8_t *base;
1026
1027     if (!Index_(pool, context, internal, property, index, base))
1028         return NULL;
1029
1030     JSObjectRef owner(internal->GetOwner() ?: object);
1031
1032     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
1033 } CYCatch(NULL) }
1034
1035 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1036     CYPool pool;
1037     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1038     Type_privateData *typical(internal->type_);
1039
1040     ssize_t index;
1041     uint8_t *base;
1042
1043     if (!Index_(pool, context, internal, property, index, base))
1044         return false;
1045
1046     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
1047     return true;
1048 } CYCatch(false) }
1049
1050 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1051     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1052     Type_privateData *typical(internal->type_);
1053     sig::Type *type(typical->type_);
1054
1055     if (type == NULL)
1056         return;
1057
1058     size_t count(type->data.signature.count);
1059     sig::Element *elements(type->data.signature.elements);
1060
1061     char number[32];
1062
1063     for (size_t index(0); index != count; ++index) {
1064         const char *name;
1065         name = elements[index].name;
1066
1067         if (name == NULL) {
1068             sprintf(number, "%zu", index);
1069             name = number;
1070         }
1071
1072         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1073     }
1074 }
1075
1076 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1077     ffi_call(cif, function, value, values);
1078 }
1079
1080 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)()) {
1081     if (setups + count != signature->count - 1)
1082         throw CYJSError(context, "incorrect number of arguments to ffi function");
1083
1084     size_t size(setups + count);
1085     void *values[size];
1086     memcpy(values, setup, sizeof(void *) * setups);
1087
1088     for (size_t index(setups); index != size; ++index) {
1089         sig::Element *element(&signature->elements[index + 1]);
1090         ffi_type *ffi(cif->arg_types[index]);
1091         // XXX: alignment?
1092         values[index] = new(pool) uint8_t[ffi->size];
1093         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
1094     }
1095
1096     uint8_t value[cif->rtype->size];
1097
1098     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1099     // XXX: this only supports one hook, but it is a bad idea anyway
1100     for (CYHook *hook : GetHooks())
1101         if (hook->CallFunction != NULL)
1102             call = hook->CallFunction;
1103
1104     call(pool, context, cif, function, value, values);
1105     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1106 }
1107
1108 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1109     CYPool pool;
1110     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1111     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1112 } CYCatch(NULL) }
1113
1114 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1115     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1116     if (internal->type_->type_->primitive != sig::function_P)
1117         throw CYJSError(context, "cannot call a pointer to non-function");
1118     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1119     return CYCallAsFunction(context, functor, _this, count, arguments);
1120 } CYCatch(NULL) }
1121
1122 JSObjectRef CYMakeType(JSContextRef context, sig::Primitive primitive) {
1123     Type_privateData *internal(new Type_privateData(primitive));
1124     return JSObjectMake(context, Type_privateData::Class_, internal);
1125 }
1126
1127 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1128     Type_privateData *internal(new Type_privateData(type));
1129     return JSObjectMake(context, Type_privateData::Class_, internal);
1130 }
1131
1132 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1133     CYPool pool;
1134
1135     sig::Type type;
1136     type.name = NULL;
1137     type.flags = 0;
1138
1139     type.primitive = sig::function_P;
1140     sig::Copy(pool, type.data.signature, *signature);
1141
1142     return CYMakeType(context, &type);
1143 }
1144
1145 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1146     sqlite3_stmt *statement;
1147
1148     _sqlcall(sqlite3_prepare(database_,
1149         "select "
1150             "\"cache\".\"code\", "
1151             "\"cache\".\"flags\" "
1152         "from \"cache\" "
1153         "where"
1154             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1155             " \"cache\".\"name\" = ?"
1156         " limit 1"
1157     , -1, &statement, NULL));
1158
1159     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1160
1161     bool success;
1162     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1163         success = false;
1164     else {
1165         success = true;
1166         code = sqlite3_column_pooled(pool, statement, 0);
1167         flags = sqlite3_column_int(statement, 1);
1168     }
1169
1170     _sqlcall(sqlite3_finalize(statement));
1171     return success;
1172 }
1173
1174 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1175     if (JSStringIsEqualToUTF8CString(property, "errno"))
1176         return true;
1177
1178     JSObjectRef global(CYGetGlobalObject(context));
1179     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1180     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1181
1182     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1183         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1184             if (CYHasProperty(context, space, property))
1185                 return true;
1186
1187     CYPool pool;
1188     const char *code;
1189     unsigned flags;
1190     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1191         return true;
1192
1193     return false;
1194 }
1195
1196 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1197     if (JSStringIsEqualToUTF8CString(property, "errno"))
1198         return CYCastJSValue(context, errno);
1199
1200     JSObjectRef global(CYGetGlobalObject(context));
1201     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1202     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1203
1204     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1205         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1206             if (JSValueRef value = CYGetProperty(context, space, property))
1207                 if (!JSValueIsUndefined(context, value))
1208                     return value;
1209
1210     CYPool pool;
1211     const char *code;
1212     unsigned flags;
1213     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1214         CYUTF8String parsed;
1215
1216         try {
1217             parsed = CYPoolCode(pool, code);
1218         } catch (const CYException &error) {
1219             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1220         }
1221
1222         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1223
1224         if (flags == 0) {
1225             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1226             CYSetProperty(context, cache, property, result);
1227         }
1228
1229         return result;
1230     }
1231
1232     return NULL;
1233 } CYCatch(NULL) }
1234
1235 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1236     _assert(count == 1);
1237     CYPool pool;
1238     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1239
1240     std::vector<JSValueRef> values;
1241
1242     sqlite3_stmt *statement;
1243
1244     if (prefix.size == 0)
1245         _sqlcall(sqlite3_prepare(database_,
1246             "select "
1247                 "\"cache\".\"name\" "
1248             "from \"cache\" "
1249             "where"
1250                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1251         , -1, &statement, NULL));
1252     else {
1253         _sqlcall(sqlite3_prepare(database_,
1254             "select "
1255                 "\"cache\".\"name\" "
1256             "from \"cache\" "
1257             "where"
1258                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1259                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1260         , -1, &statement, NULL));
1261
1262         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1263
1264         char *after(pool.strndup(prefix.data, prefix.size));
1265         ++after[prefix.size - 1];
1266         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1267     }
1268
1269     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1270         values.push_back(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1271
1272     _sqlcall(sqlite3_finalize(statement));
1273
1274     return CYObjectMakeArray(context, values.size(), values.data());
1275 } CYCatch(NULL) }
1276
1277 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1278     JSObjectRef global(CYGetGlobalObject(context));
1279     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1280     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1281
1282     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1283         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1284             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1285             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1286                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1287             JSPropertyNameArrayRelease(subset);
1288         }
1289 }
1290
1291 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1292     if (count != 1)
1293         throw CYJSError(context, "incorrect number of arguments to CString constructor");
1294     char *value(CYCastPointer<char *>(context, arguments[0]));
1295     return CYMakeCString(context, value, NULL);
1296 } CYCatch(NULL) }
1297
1298 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1299     if (count != 2)
1300         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1301
1302     CYPool pool;
1303
1304     void *value(CYCastPointer<void *>(context, arguments[0]));
1305     const char *type(CYPoolCString(pool, context, arguments[1]));
1306
1307     sig::Signature signature;
1308     sig::Parse(pool, &signature, type, &Structor_);
1309
1310     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1311 } CYCatch(NULL) }
1312
1313 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1314     CYPool pool;
1315
1316     if (false) {
1317     } else if (count == 1) {
1318         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1319         sig::Signature signature;
1320         sig::Parse(pool, &signature, encoding, &Structor_);
1321         return CYMakeType(context, signature.elements[0].type);
1322     } else if (count == 2) {
1323         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1324         size_t count(CYArrayLength(context, types));
1325
1326         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1327
1328         sig::Type type;
1329         type.name = NULL;
1330         type.flags = 0;
1331
1332         type.primitive = sig::struct_P;
1333         type.data.signature.elements = new(pool) sig::Element[count];
1334         type.data.signature.count = count;
1335
1336         for (size_t i(0); i != count; ++i) {
1337             sig::Element &element(type.data.signature.elements[i]);
1338             element.offset = _not(size_t);
1339
1340             JSValueRef name(CYArrayGet(context, names, i));
1341             if (JSValueIsUndefined(context, name))
1342                 element.name = NULL;
1343             else
1344                 element.name = CYPoolCString(pool, context, name);
1345
1346             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1347             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1348             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1349             element.type = internal->type_;
1350         }
1351
1352         return CYMakeType(context, &type);
1353     } else {
1354         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1355     }
1356 } CYCatch(NULL) }
1357
1358 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1359     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1360
1361     CYPool pool;
1362
1363     sig::Type type;
1364     type.name = NULL;
1365     type.flags = 0;
1366
1367     type.primitive = primitive;
1368     type.data.signature.elements = new(pool) sig::Element[1 + count];
1369     type.data.signature.count = 1 + count;
1370
1371     type.data.signature.elements[0].name = NULL;
1372     type.data.signature.elements[0].type = internal->type_;
1373     type.data.signature.elements[0].offset = _not(size_t);
1374
1375     for (size_t i(0); i != count; ++i) {
1376         sig::Element &element(type.data.signature.elements[i + 1]);
1377         element.name = NULL;
1378         element.offset = _not(size_t);
1379
1380         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1381         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1382         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1383
1384         element.type = internal->type_;
1385     }
1386
1387     return CYMakeType(context, &type);
1388 } CYCatch(NULL) }
1389
1390 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1391     if (count != 1)
1392         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1393     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1394
1395     CYPool pool;
1396     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1397     if (index == _not(size_t))
1398         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1399
1400     sig::Type type;
1401     type.name = NULL;
1402     type.flags = 0;
1403
1404     type.primitive = sig::array_P;
1405     type.data.data.type = internal->type_;
1406     type.data.data.size = index;
1407
1408     return CYMakeType(context, &type);
1409 } CYCatch(NULL) }
1410
1411 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1412     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1413 }
1414
1415 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1416     if (count != 0)
1417         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1418     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1419
1420     sig::Type type(*internal->type_);
1421     type.flags |= JOC_TYPE_CONST;
1422     return CYMakeType(context, &type);
1423 } CYCatch(NULL) }
1424
1425 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1426     if (count != 0)
1427         throw CYJSError(context, "incorrect number of arguments to Type.long");
1428     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1429
1430     sig::Type type(*internal->type_);
1431
1432     switch (type.primitive) {
1433         case sig::short_P: type.primitive = sig::int_P; break;
1434         case sig::int_P: type.primitive = sig::long_P; break;
1435         case sig::long_P: type.primitive = sig::longlong_P; break;
1436         default: throw CYJSError(context, "invalid type argument to Type.long");
1437     }
1438
1439     return CYMakeType(context, &type);
1440 } CYCatch(NULL) }
1441
1442 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1443     if (count != 0)
1444         throw CYJSError(context, "incorrect number of arguments to Type.short");
1445     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1446
1447     sig::Type type(*internal->type_);
1448
1449     switch (type.primitive) {
1450         case sig::int_P: type.primitive = sig::short_P; break;
1451         case sig::long_P: type.primitive = sig::int_P; break;
1452         case sig::longlong_P: type.primitive = sig::long_P; break;
1453         default: throw CYJSError(context, "invalid type argument to Type.short");
1454     }
1455
1456     return CYMakeType(context, &type);
1457 } CYCatch(NULL) }
1458
1459 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1460     if (count != 0)
1461         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1462     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1463
1464     sig::Type type(*internal->type_);
1465
1466     switch (type.primitive) {
1467         case sig::char_P: case sig::schar_P: case sig::uchar_P: type.primitive = sig::schar_P; break;
1468         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1469         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1470         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1471         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1472         default: throw CYJSError(context, "invalid type argument to Type.signed");
1473     }
1474
1475     return CYMakeType(context, &type);
1476 } CYCatch(NULL) }
1477
1478 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1479     if (count != 0)
1480         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1481     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1482
1483     sig::Type type(*internal->type_);
1484
1485     switch (type.primitive) {
1486         case sig::char_P: case sig::schar_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1487         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1488         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1489         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1490         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1491         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1492     }
1493
1494     return CYMakeType(context, &type);
1495 } CYCatch(NULL) }
1496
1497 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1498     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1499 }
1500
1501 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1502     if (count != 0)
1503         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1504     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1505
1506     sig::Type type;
1507     type.name = NULL;
1508
1509     if (internal->type_->primitive == sig::char_P) {
1510         type.flags = internal->type_->flags;
1511         type.primitive = sig::string_P;
1512         type.data.data.type = NULL;
1513         type.data.data.size = 0;
1514     } else {
1515         type.flags = 0;
1516         type.primitive = sig::pointer_P;
1517         type.data.data.type = internal->type_;
1518         type.data.data.size = 0;
1519     }
1520
1521     return CYMakeType(context, &type);
1522 } CYCatch(NULL) }
1523
1524 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1525     if (count != 1)
1526         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1527     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1528
1529     CYPool pool;
1530     const char *name(CYPoolCString(pool, context, arguments[0]));
1531
1532     sig::Type type(*internal->type_);
1533     type.name = name;
1534     return CYMakeType(context, &type);
1535 } CYCatch(NULL) }
1536
1537 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1538     if (count != 1)
1539         throw CYJSError(context, "incorrect number of arguments to type cast function");
1540     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1541
1542     if (internal->type_->primitive == sig::function_P)
1543         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1544
1545     sig::Type *type(internal->type_);
1546     ffi_type *ffi(internal->GetFFI());
1547     // XXX: alignment?
1548     uint8_t value[ffi->size];
1549     CYPool pool;
1550     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1551     return CYFromFFI(context, type, ffi, value);
1552 } CYCatch(NULL) }
1553
1554 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1555     if (count != 0)
1556         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1557     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1558
1559     sig::Type *type(internal->type_);
1560     size_t length;
1561
1562     if (type->primitive != sig::array_P)
1563         length = _not(size_t);
1564     else {
1565         length = type->data.data.size;
1566         type = type->data.data.type;
1567     }
1568
1569     JSObjectRef pointer(CYMakePointer(context, NULL, length, type, NULL, NULL));
1570     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1571     value->value_ = value->pool_->malloc<void>(internal->GetFFI()->size);
1572     memset(value->value_, 0, internal->GetFFI()->size);
1573     return pointer;
1574 } CYCatch(NULL) }
1575
1576 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1577     if (count != 2)
1578         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1579     CYPool pool;
1580     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1581     sig::Signature signature;
1582     sig::Parse(pool, &signature, encoding, &Structor_);
1583     return CYMakeFunctor(context, arguments[0], signature);
1584 } CYCatch(NULL) }
1585
1586 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1587     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1588
1589     sig::Type type;
1590     type.name = NULL;
1591     type.flags = 0;
1592
1593     type.primitive = sig::char_P;
1594     type.data.data.type = NULL;
1595     type.data.data.size = 0;
1596
1597     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1598 } CYCatch(NULL) }
1599
1600 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1601     CYPool pool;
1602     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1603
1604     sig::Type type;
1605     type.name = NULL;
1606     type.flags = 0;
1607
1608     type.primitive = sig::function_P;
1609     sig::Copy(pool, type.data.signature, internal->signature_);
1610
1611     return CYMakePointer(context, internal->value_, _not(size_t), &type, NULL, NULL);
1612 } CYCatch(NULL) }
1613
1614 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1615     return _this;
1616 } CYCatch(NULL) }
1617
1618 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1619     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1620     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1621 } CYCatch(NULL) }
1622
1623 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1624     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1625 }
1626
1627 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1628     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1629     std::ostringstream str;
1630     Dl_info info;
1631     if (internal->value_ == NULL)
1632         str << "NULL";
1633     else if (dladdr(internal->value_, &info) == 0)
1634         str << internal->value_;
1635     else {
1636         str << info.dli_sname;
1637         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1638         if (offset != 0)
1639             str << "+0x" << std::hex << offset;
1640     }
1641     std::string value(str.str());
1642     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1643 } CYCatch(NULL) }
1644
1645 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1646     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1647
1648     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1649     if (internal->length_ != _not(size_t)) {
1650         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1651         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1652         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1653     } else if (internal->type_->type_ == NULL) pointer: {
1654         CYLocalPool pool;
1655         std::ostringstream str;
1656
1657         sig::Type type;
1658         type.name = NULL;
1659         type.flags = 0;
1660
1661         type.primitive = sig::pointer_P;
1662         type.data.data.type = internal->type_->type_;
1663         type.data.data.size = 0;
1664
1665         CYOptions options;
1666         CYOutput output(*str.rdbuf(), options);
1667         (new(pool) CYTypeExpression(Decode(pool, &type)))->Output(output, CYNoFlags);
1668
1669         str << "(" << internal->value_ << ")";
1670         std::string value(str.str());
1671         return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1672     } else try {
1673         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1674         if (JSValueIsUndefined(context, value))
1675             goto pointer;
1676         CYPool pool;
1677         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1678     } catch (const CYException &e) {
1679         goto pointer;
1680     }
1681 } CYCatch(NULL) }
1682
1683 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1684     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1685     char *string(static_cast<char *>(internal->value_));
1686     return CYCastJSValue(context, strlen(string));
1687 } CYCatch(NULL) }
1688
1689 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1690     sig::Type type;
1691     type.name = NULL;
1692     type.flags = 0;
1693
1694     type.primitive = sig::char_P;
1695     type.data.data.type = NULL;
1696     type.data.data.size = 0;
1697
1698     return CYMakeType(context, &type);
1699 } CYCatch(NULL) }
1700
1701 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1702     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1703     return CYMakeType(context, internal->type_->type_);
1704 } CYCatch(NULL) }
1705
1706 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1707     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1708     const char *string(static_cast<const char *>(internal->value_));
1709     std::ostringstream str;
1710     str << "&";
1711     CYStringify(str, string, strlen(string), true);
1712     std::string value(str.str());
1713     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1714 } CYCatch(NULL) }
1715
1716 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1717     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1718     const char *string(static_cast<const char *>(internal->value_));
1719     return CYCastJSValue(context, string);
1720 } CYCatch(NULL) }
1721
1722 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1723     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1724     return CYMakeType(context, &internal->signature_);
1725 } CYCatch(NULL) }
1726
1727 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1728     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1729     return CYCastJSValue(context, internal->GetFFI()->alignment);
1730 } CYCatch(NULL) }
1731
1732 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1733     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1734     return CYCastJSValue(context, internal->type_->name);
1735 } CYCatch(NULL) }
1736
1737 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1738     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1739     return CYCastJSValue(context, internal->GetFFI()->size);
1740 } CYCatch(NULL) }
1741
1742 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1743     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1744     CYPool pool;
1745     const char *type(sig::Unparse(pool, internal->type_));
1746     return CYCastJSValue(context, CYJSString(type));
1747 } CYCatch(NULL) }
1748
1749 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1750     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1751     CYLocalPool pool;
1752     std::stringbuf out;
1753     CYOptions options;
1754     CYOutput output(out, options);
1755     (new(pool) CYTypeExpression(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1756     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1757 } CYCatch(NULL) }
1758
1759 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1760     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1761 }
1762
1763 static JSStaticFunction All_staticFunctions[2] = {
1764     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1765     {NULL, NULL, 0}
1766 };
1767
1768 static JSStaticFunction CString_staticFunctions[6] = {
1769     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1770     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1771     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1772     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1773     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1774     {NULL, NULL, 0}
1775 };
1776
1777 static JSStaticValue CString_staticValues[3] = {
1778     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1779     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1780     {NULL, NULL, NULL, 0}
1781 };
1782
1783 static JSStaticFunction Pointer_staticFunctions[5] = {
1784     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1785     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1786     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1787     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1788     {NULL, NULL, 0}
1789 };
1790
1791 static JSStaticValue Pointer_staticValues[2] = {
1792     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1793     {NULL, NULL, NULL, 0}
1794 };
1795
1796 static JSStaticFunction Struct_staticFunctions[2] = {
1797     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1798     {NULL, NULL, 0}
1799 };
1800
1801 static JSStaticFunction Functor_staticFunctions[5] = {
1802     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1803     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1804     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1805     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1806     {NULL, NULL, 0}
1807 };
1808
1809 namespace cy {
1810     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1811 }
1812
1813 static JSStaticValue Functor_staticValues[2] = {
1814     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1815     {NULL, NULL, NULL, 0}
1816 };
1817
1818 namespace cy {
1819     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1820 }
1821
1822 static JSStaticValue Type_staticValues[4] = {
1823     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1824     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1825     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1826     {NULL, NULL, NULL, 0}
1827 };
1828
1829 static JSStaticFunction Type_staticFunctions[14] = {
1830     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1831     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1832     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1833     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1834     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1835     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1836     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1837     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1838     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1839     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1840     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1841     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1842     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1843     {NULL, NULL, 0}
1844 };
1845
1846 _visible void CYSetArgs(int argc, const char *argv[]) {
1847     JSContextRef context(CYGetJSContext());
1848     JSValueRef args[argc];
1849     for (int i(0); i != argc; ++i)
1850         args[i] = CYCastJSValue(context, argv[i]);
1851
1852     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1853     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1854     CYSetProperty(context, System, CYJSString("args"), array);
1855 }
1856
1857 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1858     return JSContextGetGlobalObject(context);
1859 }
1860
1861 // XXX: this is neither exceptin safe nor even terribly sane
1862 class ExecutionHandle {
1863   private:
1864     JSContextRef context_;
1865     std::vector<void *> handles_;
1866
1867   public:
1868     ExecutionHandle(JSContextRef context) :
1869         context_(context)
1870     {
1871         handles_.resize(GetHooks().size());
1872         for (size_t i(0); i != GetHooks().size(); ++i) {
1873             CYHook *hook(GetHooks()[i]);
1874             if (hook->ExecuteStart != NULL)
1875                 handles_[i] = (*hook->ExecuteStart)(context_);
1876             else
1877                 handles_[i] = NULL;
1878         }
1879     }
1880
1881     ~ExecutionHandle() {
1882         for (size_t i(GetHooks().size()); i != 0; --i) {
1883             CYHook *hook(GetHooks()[i-1]);
1884             if (hook->ExecuteEnd != NULL)
1885                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1886         }
1887     }
1888 };
1889
1890 static volatile bool cancel_;
1891
1892 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1893     return cancel_;
1894 }
1895
1896 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1897     ExecutionHandle handle(context);
1898
1899     cancel_ = false;
1900     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1901         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1902
1903     try {
1904         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1905         if (JSValueIsUndefined(context, result))
1906             return NULL;
1907
1908         std::set<void *> objects;
1909         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1910         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1911
1912         return json;
1913     } catch (const CYException &error) {
1914         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1915     }
1916 }
1917
1918 _visible void CYCancel() {
1919     cancel_ = true;
1920 }
1921
1922 static const char *CYPoolLibraryPath(CYPool &pool);
1923
1924 static bool initialized_ = false;
1925
1926 void CYInitializeDynamic() {
1927     if (!initialized_)
1928         initialized_ = true;
1929     else return;
1930
1931     CYPool pool;
1932     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1933     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1934
1935     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1936     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1937
1938     JSClassDefinition definition;
1939
1940     definition = kJSClassDefinitionEmpty;
1941     definition.className = "All";
1942     definition.staticFunctions = All_staticFunctions;
1943     definition.hasProperty = &All_hasProperty;
1944     definition.getProperty = &All_getProperty;
1945     definition.getPropertyNames = &All_getPropertyNames;
1946     All_ = JSClassCreate(&definition);
1947
1948     definition = kJSClassDefinitionEmpty;
1949     definition.className = "Context";
1950     definition.finalize = &CYFinalize;
1951     Context_ = JSClassCreate(&definition);
1952
1953     definition = kJSClassDefinitionEmpty;
1954     definition.className = "CString";
1955     definition.staticFunctions = CString_staticFunctions;
1956     definition.staticValues = CString_staticValues;
1957     definition.getProperty = &CString_getProperty;
1958     definition.setProperty = &CString_setProperty;
1959     definition.finalize = &CYFinalize;
1960     CString_ = JSClassCreate(&definition);
1961
1962     definition = kJSClassDefinitionEmpty;
1963     definition.className = "Functor";
1964     definition.staticFunctions = cy::Functor::StaticFunctions;
1965     definition.staticValues = Functor_staticValues;
1966     definition.callAsFunction = &Functor_callAsFunction;
1967     definition.finalize = &CYFinalize;
1968     Functor_ = JSClassCreate(&definition);
1969
1970     definition = kJSClassDefinitionEmpty;
1971     definition.className = "Pointer";
1972     definition.staticFunctions = Pointer_staticFunctions;
1973     definition.staticValues = Pointer_staticValues;
1974     definition.callAsFunction = &Pointer_callAsFunction;
1975     definition.getProperty = &Pointer_getProperty;
1976     definition.setProperty = &Pointer_setProperty;
1977     definition.finalize = &CYFinalize;
1978     Pointer_ = JSClassCreate(&definition);
1979
1980     definition = kJSClassDefinitionEmpty;
1981     definition.className = "Struct";
1982     definition.staticFunctions = Struct_staticFunctions;
1983     definition.getProperty = &Struct_getProperty;
1984     definition.setProperty = &Struct_setProperty;
1985     definition.getPropertyNames = &Struct_getPropertyNames;
1986     definition.finalize = &CYFinalize;
1987     Struct_ = JSClassCreate(&definition);
1988
1989     definition = kJSClassDefinitionEmpty;
1990     definition.className = "Type";
1991     definition.staticValues = Type_staticValues;
1992     definition.staticFunctions = Type_staticFunctions;
1993     definition.callAsFunction = &Type_callAsFunction;
1994     definition.callAsConstructor = &Type_callAsConstructor;
1995     definition.finalize = &CYFinalize;
1996     Type_privateData::Class_ = JSClassCreate(&definition);
1997
1998     definition = kJSClassDefinitionEmpty;
1999     definition.className = "Global";
2000     //definition.getProperty = &Global_getProperty;
2001     Global_ = JSClassCreate(&definition);
2002
2003     Array_s = JSStringCreateWithUTF8CString("Array");
2004     cy_s = JSStringCreateWithUTF8CString("$cy");
2005     cyi_s = JSStringCreateWithUTF8CString("$cyi");
2006     length_s = JSStringCreateWithUTF8CString("length");
2007     message_s = JSStringCreateWithUTF8CString("message");
2008     name_s = JSStringCreateWithUTF8CString("name");
2009     pop_s = JSStringCreateWithUTF8CString("pop");
2010     prototype_s = JSStringCreateWithUTF8CString("prototype");
2011     push_s = JSStringCreateWithUTF8CString("push");
2012     splice_s = JSStringCreateWithUTF8CString("splice");
2013     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2014     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2015     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2016     toString_s = JSStringCreateWithUTF8CString("toString");
2017     weak_s = JSStringCreateWithUTF8CString("weak");
2018
2019     Result_ = JSStringCreateWithUTF8CString("_");
2020
2021     for (CYHook *hook : GetHooks())
2022         if (hook->Initialize != NULL)
2023             (*hook->Initialize)();
2024 }
2025
2026 void CYThrow(JSContextRef context, JSValueRef value) {
2027     if (value != NULL)
2028         throw CYJSError(context, value);
2029 }
2030
2031 const char *CYJSError::PoolCString(CYPool &pool) const {
2032     std::set<void *> objects;
2033     // XXX: this used to be CYPoolCString
2034     return CYPoolCCYON(pool, context_, value_, objects);
2035 }
2036
2037 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2038     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2039     return value_;
2040 }
2041
2042 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2043     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2044     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2045     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2046 }
2047
2048 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2049     return CYCastJSError(context, name, message_);
2050 }
2051
2052 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2053     _assert(context != NULL);
2054
2055     CYPool pool;
2056
2057     va_list args;
2058     va_start(args, format);
2059     // XXX: there might be a beter way to think about this
2060     const char *message(pool.vsprintf(64, format, args));
2061     va_end(args);
2062
2063     value_ = CYCastJSError(context, "Error", message);
2064 }
2065
2066 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2067     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2068 }
2069
2070 static const char *CYPoolLibraryPath(CYPool &pool) {
2071     Dl_info addr;
2072     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2073     char *lib(pool.strdup(addr.dli_fname));
2074
2075     char *slash(strrchr(lib, '/'));
2076     _assert(slash != NULL);
2077     *slash = '\0';
2078
2079     slash = strrchr(lib, '/');
2080     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2081         *slash = '\0';
2082
2083     return lib;
2084 }
2085
2086 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2087     _assert(count == 1);
2088     CYPool pool;
2089
2090     const char *name(CYPoolCString(pool, context, arguments[0]));
2091     if (strchr(name, '/') == NULL && (
2092 #ifdef __APPLE__
2093         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2094         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2095 #endif
2096     false))
2097         return CYJSUndefined(context);
2098
2099     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2100     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2101
2102     CYJSString property("exports");
2103
2104     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2105     JSValueRef cache(CYGetProperty(context, modules, path));
2106
2107     JSValueRef result;
2108     if (!JSValueIsUndefined(context, cache)) {
2109         JSObjectRef module(CYCastJSObject(context, cache));
2110         result = CYGetProperty(context, module, property);
2111     } else {
2112         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2113         _assert(code.data != NULL);
2114
2115         size_t length(strlen(name));
2116         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2117             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2118             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2119             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2120             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2121         } else {
2122             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2123             CYSetProperty(context, modules, path, module);
2124
2125             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2126             CYSetProperty(context, module, property, exports);
2127
2128             std::stringstream wrap;
2129             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2130             code = CYPoolCode(pool, *wrap.rdbuf());
2131
2132             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2133             JSObjectRef function(CYCastJSObject(context, value));
2134
2135             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2136             CYCallAsFunction(context, function, NULL, 4, arguments);
2137             result = CYGetProperty(context, module, property);
2138         }
2139     }
2140
2141     return result;
2142 } CYCatch(NULL) }
2143
2144 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2145     CYPool pool;
2146     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2147     if (code.data == NULL)
2148         return false;
2149
2150     code = CYPoolCode(pool, code);
2151     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2152     return true;
2153 }
2154
2155 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2156 }
2157
2158 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2159     CYInitializeDynamic();
2160
2161     JSObjectRef global(CYGetGlobalObject(context));
2162
2163     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2164     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2165
2166 /* Cache Globals {{{ */
2167     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2168     CYSetProperty(context, cy, CYJSString("Array"), Array);
2169
2170     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2171     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2172
2173     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2174     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2175
2176     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2177     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2178
2179     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2180     CYSetProperty(context, cy, CYJSString("Error"), Error);
2181
2182     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2183     CYSetProperty(context, cy, CYJSString("Function"), Function);
2184
2185     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2186     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2187
2188     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2189     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2190
2191     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2192     CYSetProperty(context, cy, CYJSString("Number"), Number);
2193
2194     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2195     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2196
2197     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2198     CYSetProperty(context, cy, CYJSString("Object"), Object);
2199
2200     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2201     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2202
2203     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2204     CYSetProperty(context, cy, CYJSString("String"), String);
2205
2206     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2207     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2208
2209     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2210     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2211 /* }}} */
2212
2213     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2214     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2215
2216     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2217     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2218     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2219     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2220
2221     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2222     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2223     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2224
2225     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2226     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2227     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2228
2229     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2230     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2231
2232     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2233     CYSetProperty(context, cy, CYJSString("modules"), modules);
2234
2235     JSObjectRef all(JSObjectMake(context, All_, NULL));
2236     CYSetProperty(context, cycript, CYJSString("all"), all);
2237
2238     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2239     CYSetProperty(context, cy, CYJSString("cache"), cache);
2240     CYSetPrototype(context, cache, all);
2241
2242     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2243     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2244
2245     if (true) {
2246         JSObjectRef last(NULL), curr(global);
2247
2248         goto next; for (JSValueRef next;;) {
2249             if (JSValueIsNull(context, next))
2250                 break;
2251             last = curr;
2252             curr = CYCastJSObject(context, next);
2253           next:
2254             next = JSObjectGetPrototype(context, curr);
2255         }
2256
2257         CYSetPrototype(context, last, cache);
2258     }
2259
2260     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2261     CYSetProperty(context, cy, CYJSString("System"), System);
2262
2263     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2264
2265     CYSetProperty(context, global, CYJSString("system"), System);
2266     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2267     CYSetProperty(context, System, CYJSString("print"), &System_print);
2268
2269     CYSetProperty(context, global, CYJSString("global"), global);
2270
2271 #ifdef __APPLE__
2272     if (&JSWeakObjectMapCreate != NULL) {
2273         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2274         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2275     }
2276 #endif
2277
2278     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2279     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2280     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2281
2282     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2283
2284     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::boolean_P), kJSPropertyAttributeDontEnum);
2285     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::char_P), kJSPropertyAttributeDontEnum);
2286     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::short_P), kJSPropertyAttributeDontEnum);
2287     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::int_P), kJSPropertyAttributeDontEnum);
2288     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::long_P), kJSPropertyAttributeDontEnum);
2289     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::float_P), kJSPropertyAttributeDontEnum);
2290     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::double_P), kJSPropertyAttributeDontEnum);
2291
2292     for (CYHook *hook : GetHooks())
2293         if (hook->SetupContext != NULL)
2294             (*hook->SetupContext)(context);
2295
2296     CYArrayPush(context, alls, cycript);
2297
2298     CYRunScript(context, "/libcycript.cy");
2299 }
2300
2301 static JSGlobalContextRef context_;
2302
2303 _visible JSGlobalContextRef CYGetJSContext() {
2304     CYInitializeDynamic();
2305
2306     if (context_ == NULL) {
2307         context_ = JSGlobalContextCreate(Global_);
2308         CYSetupContext(context_);
2309     }
2310
2311     return context_;
2312 }
2313
2314 _visible void CYDestroyContext() {
2315     if (context_ == NULL)
2316         return;
2317     JSGlobalContextRelease(context_);
2318     context_ = NULL;
2319 }