Execute.cpp

   1 /* Cycript - The Truly Universal Scripting Language
   2  * Copyright (C) 2009-2016  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 JSObjectRef CYGetPrototype(JSContextRef context, JSObjectRef object) {
  98     return CYCastJSObject(context, JSObjectGetPrototype(context, object));
  99 }
 100
 101 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
 102     _assert(!JSValueIsUndefined(context, value));
 103     JSObjectSetPrototype(context, object, value);
 104     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
 105 }
 106 /* }}} */
 107 /* JavaScript Strings {{{ */
 108 JSStringRef CYCopyJSString(const char *value) {
 109     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 110 }
 111
 112 JSStringRef CYCopyJSString(JSStringRef value) {
 113     return value == NULL ? NULL : JSStringRetain(value);
 114 }
 115
 116 JSStringRef CYCopyJSString(CYUTF8String value) {
 117     if (memchr(value.data, '\0', value.size) != NULL) {
 118         CYPool pool;
 119         return CYCopyJSString(CYPoolUTF16String(pool, value));
 120     } else if (value.data[value.size] != '\0') {
 121         CYPool pool;
 122         return CYCopyJSString(pool.strmemdup(value.data, value.size));
 123     } else {
 124         return CYCopyJSString(value.data);
 125     }
 126 }
 127
 128 JSStringRef CYCopyJSString(const std::string &value) {
 129     return CYCopyJSString(CYUTF8String(value.c_str(), value.size()));
 130 }
 131
 132 JSStringRef CYCopyJSString(CYUTF16String value) {
 133     return JSStringCreateWithCharacters(value.data, value.size);
 134 }
 135
 136 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 137     if (JSValueIsNull(context, value))
 138         return NULL;
 139     return _jsccall(JSValueToStringCopy, context, value);
 140 }
 141
 142 CYUTF16String CYCastUTF16String(JSStringRef value) {
 143     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 144 }
 145
 146 const char *CYPoolCString(CYPool &pool, CYUTF8String utf8) {
 147     return pool.strndup(utf8.data, utf8.size);
 148 }
 149
 150 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 151     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 152 }
 153
 154 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 155     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 156     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 157     return utf8.data;
 158 }
 159
 160 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 161     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 162 }
 163 /* }}} */
 164 /* Index Offsets {{{ */
 165 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 166     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 167 }
 168 /* }}} */
 169
 170 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 171
 172 JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 173     if (JSObjectMakeArray$ != NULL)
 174         return _jsccall(*JSObjectMakeArray$, context, length, values);
 175     else {
 176         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 177         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 178         return CYCastJSObject(context, value);
 179     }
 180 }
 181
 182 static JSClassRef All_;
 183 JSClassRef Functor_;
 184 static JSClassRef Global_;
 185
 186 JSStringRef Array_s;
 187 JSStringRef constructor_s;
 188 JSStringRef cy_s;
 189 JSStringRef cyi_s;
 190 JSStringRef cyt_s;
 191 JSStringRef length_s;
 192 JSStringRef message_s;
 193 JSStringRef name_s;
 194 JSStringRef pop_s;
 195 JSStringRef prototype_s;
 196 JSStringRef push_s;
 197 JSStringRef splice_s;
 198 JSStringRef toCYON_s;
 199 JSStringRef toJSON_s;
 200 JSStringRef toPointer_s;
 201 JSStringRef toString_s;
 202 JSStringRef weak_s;
 203
 204 static sqlite3 *database_;
 205
 206 static JSStringRef Result_;
 207
 208 void CYFinalize(JSObjectRef object) {
 209     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 210     _assert(internal->count_ != _not(unsigned));
 211     if (--internal->count_ == 0)
 212         delete internal;
 213 }
 214
 215 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 216     //_assert(false);
 217     return aggregate;
 218 }
 219
 220 struct Context :
 221     CYPrivate<Context>
 222 {
 223     JSGlobalContextRef context_;
 224
 225     Context(JSGlobalContextRef context) :
 226         context_(context)
 227     {
 228     }
 229 };
 230
 231 struct CArray :
 232     CYValue<CArray, void *>
 233 {
 234     CYProtect owner_;
 235     Type_privateData *type_;
 236     size_t length_;
 237
 238     CArray(void *value, size_t length, const sig::Type &type, ffi_type *ffi, JSContextRef context, JSObjectRef owner) :
 239         CYValue(value),
 240         owner_(context, owner),
 241         type_(new(*pool_) Type_privateData(type, ffi)),
 242         length_(length)
 243     {
 244         if (owner == NULL) {
 245             size_t size(ffi->size * length);
 246             void *copy(pool_->malloc<void>(size, ffi->alignment));
 247             memcpy(copy, value_, size);
 248             value_ = copy;
 249         }
 250     }
 251 };
 252
 253 struct CString :
 254     CYValue<CString, char *>
 255 {
 256     CYProtect owner_;
 257
 258     CString(char *value, JSContextRef context, JSObjectRef owner) :
 259         CYValue(value),
 260         owner_(context, owner)
 261     {
 262         if (owner == NULL)
 263             value_ = pool_->strdup(value_);
 264     }
 265 };
 266
 267 struct Pointer :
 268     CYValue<Pointer, void *>
 269 {
 270     CYProtect owner_;
 271     Type_privateData *type_;
 272
 273     Pointer(void *value, const sig::Type &type, JSContextRef context, JSObjectRef owner) :
 274         CYValue(value),
 275         owner_(context, owner),
 276         type_(new(*pool_) Type_privateData(type))
 277     {
 278     }
 279
 280     Pointer(void *value, const char *encoding, JSContextRef context, JSObjectRef owner) :
 281         CYValue(value),
 282         owner_(context, owner),
 283         type_(new(*pool_) Type_privateData(encoding))
 284     {
 285     }
 286 };
 287
 288 struct Struct_privateData :
 289     CYValue<Struct_privateData, void *>
 290 {
 291     CYProtect owner_;
 292     Type_privateData *type_;
 293
 294     Struct_privateData(void *value, const sig::Type &type, ffi_type *ffi, JSContextRef context, JSObjectRef owner) :
 295         CYValue(value),
 296         owner_(context, owner),
 297         type_(new(*pool_) Type_privateData(type, ffi))
 298     {
 299         if (owner == NULL) {
 300             size_t size(ffi->size);
 301             void *copy(pool_->malloc<void>(size, ffi->alignment));
 302             memcpy(copy, value_, size);
 303             value_ = copy;
 304         }
 305     }
 306 };
 307
 308 static void *CYCastSymbol(const char *name) {
 309     for (CYHook *hook : GetHooks())
 310         if (hook->CastSymbol != NULL)
 311             if (void *value = (*hook->CastSymbol)(name))
 312                 return value;
 313     return dlsym(RTLD_DEFAULT, name);
 314 }
 315
 316 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 317     return JSValueMakeBoolean(context, value);
 318 }
 319
 320 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 321     return JSValueMakeNumber(context, value);
 322 }
 323
 324 #define CYCastJSValue_(Type_) \
 325     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 326         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 327         return JSValueMakeNumber(context, static_cast<double>(value)); \
 328     }
 329
 330 CYCastJSValue_(signed short int)
 331 CYCastJSValue_(unsigned short int)
 332 CYCastJSValue_(signed int)
 333 CYCastJSValue_(unsigned int)
 334 CYCastJSValue_(signed long int)
 335 CYCastJSValue_(unsigned long int)
 336 CYCastJSValue_(signed long long int)
 337 CYCastJSValue_(unsigned long long int)
 338
 339 JSValueRef CYJSUndefined(JSContextRef context) {
 340     return JSValueMakeUndefined(context);
 341 }
 342
 343 double CYCastDouble(JSContextRef context, JSValueRef value) {
 344     return _jsccall(JSValueToNumber, context, value);
 345 }
 346
 347 bool CYCastBool(JSContextRef context, JSValueRef value) {
 348     return JSValueToBoolean(context, value);
 349 }
 350
 351 JSValueRef CYJSNull(JSContextRef context) {
 352     return JSValueMakeNull(context);
 353 }
 354
 355 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 356     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 357 }
 358
 359 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 360     return CYCastJSValue(context, CYJSString(value));
 361 }
 362
 363 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 364     return _jsccall(JSValueToObject, context, value);
 365 }
 366
 367 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 368     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 369 }
 370
 371 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 372     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 373 }
 374
 375 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 376     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 377 }
 378
 379 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 380     return JSValueIsStrictEqual(context, lhs, rhs);
 381 }
 382
 383 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 384     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 385 }
 386
 387 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 388     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 389 }
 390
 391 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 392     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 393     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 394 }
 395
 396 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 397     return CYArrayPush(context, array, 1, &value);
 398 }
 399
 400 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 401     FILE *file(stdout);
 402
 403     if (count == 0)
 404         fputc('\n', file);
 405     else {
 406         CYPool pool;
 407         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 408         fwrite(string.data, string.size, 1, file);
 409     }
 410
 411     fflush(file);
 412     return CYJSUndefined(context);
 413 } CYCatch(NULL) }
 414
 415 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 416
 417 _visible void CYGarbageCollect(JSContextRef context) {
 418     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 419 }
 420
 421 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 422     CYPool pool;
 423     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 424     CYUTF8String after(CYPoolCode(pool, before));
 425     return CYCastJSValue(context, CYJSString(after));
 426 } CYCatch_(NULL, "SyntaxError") }
 427
 428 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 429     CYGarbageCollect(context);
 430     return CYJSUndefined(context);
 431 } CYCatch(NULL) }
 432
 433 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 434     switch (JSType type = JSValueGetType(context, value)) {
 435         case kJSTypeUndefined:
 436             return "undefined";
 437         case kJSTypeNull:
 438             return "null";
 439         case kJSTypeBoolean:
 440             return CYCastBool(context, value) ? "true" : "false";
 441
 442         case kJSTypeNumber: {
 443             std::ostringstream str;
 444             CYNumerify(str, CYCastDouble(context, value));
 445             std::string value(str.str());
 446             return pool.strmemdup(value.c_str(), value.size());
 447         } break;
 448
 449         case kJSTypeString: {
 450             std::ostringstream str;
 451             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 452             CYStringify(str, string.data, string.size);
 453             std::string value(str.str());
 454             return pool.strmemdup(value.c_str(), value.size());
 455         } break;
 456
 457         case kJSTypeObject:
 458             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 459         default:
 460             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 461     }
 462 } CYCatch(NULL) }
 463
 464 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 465     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 466 }
 467
 468 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 469     if (objects != NULL)
 470         return CYPoolCCYON(pool, context, value, *objects);
 471     else {
 472         std::set<void *> objects;
 473         return CYPoolCCYON(pool, context, value, objects);
 474     }
 475 }
 476
 477 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 478     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 479     if (CYIsCallable(context, toCYON)) {
 480         // XXX: this needs to be abstracted behind some kind of function
 481         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 482         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 483         _assert(value != NULL);
 484         return CYPoolCString(pool, context, value);
 485     }
 486
 487     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 488     if (CYIsCallable(context, toJSON)) {
 489         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 490         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 491     }
 492
 493     if (JSObjectIsFunction(context, object)) {
 494         JSValueRef toString(CYGetProperty(context, object, toString_s));
 495         if (CYIsCallable(context, toString)) {
 496             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 497             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 498             _assert(value != NULL);
 499             return CYPoolCString(pool, context, value);
 500         }
 501     }
 502
 503     _assert(objects.insert(object).second);
 504
 505     std::ostringstream str;
 506
 507     JSValueRef value(CYGetProperty(context, object, constructor_s));
 508     if (JSValueIsObject(context, value)) {
 509         JSObjectRef constructor(CYCastJSObject(context, value));
 510         JSValueRef theory(CYGetProperty(context, constructor, prototype_s));
 511         JSValueRef practice(JSObjectGetPrototype(context, object));
 512
 513         if (CYIsStrictEqual(context, theory, practice)) {
 514             JSValueRef name(CYGetProperty(context, constructor, name_s));
 515             if (!JSValueIsUndefined(context, name))
 516                 str << "new" << ' ' << CYPoolUTF8String(pool, context, CYJSString(context, name));
 517         }
 518     }
 519
 520     str << '{';
 521
 522     // XXX: this is, sadly, going to leak
 523     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 524
 525     bool comma(false);
 526
 527     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 528         if (comma)
 529             str << ',';
 530         else
 531             comma = true;
 532
 533         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 534         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 535
 536         if (CYIsKey(string))
 537             str << string.data;
 538         else
 539             CYStringify(str, string.data, string.size);
 540
 541         str << ':';
 542
 543         try {
 544             JSValueRef value(CYGetProperty(context, object, name));
 545             str << CYPoolCCYON(pool, context, value, objects);
 546         } catch (const CYException &error) {
 547             str << "@error";
 548         }
 549     }
 550
 551     JSPropertyNameArrayRelease(names);
 552
 553     str << '}';
 554
 555     std::string string(str.str());
 556     return pool.strmemdup(string.c_str(), string.size());
 557 }
 558
 559 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 560     if (count == 0)
 561         return NULL;
 562     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 563 }
 564
 565 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 566     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 567     // XXX: this is horribly inefficient
 568     std::set<void *> backup;
 569     if (objects == NULL)
 570         objects = &backup;
 571
 572     CYPool pool;
 573     std::ostringstream str;
 574
 575     str << '[';
 576
 577     JSValueRef length(CYGetProperty(context, _this, length_s));
 578     bool comma(false);
 579
 580     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 581         if (comma)
 582             str << ',';
 583         else
 584             comma = true;
 585
 586         try {
 587             JSValueRef value(CYGetProperty(context, _this, index));
 588             if (!JSValueIsUndefined(context, value))
 589                 str << CYPoolCCYON(pool, context, value, *objects);
 590             else {
 591                 str << ',';
 592                 comma = false;
 593             }
 594         } catch (const CYException &error) {
 595             str << "@error";
 596         }
 597     }
 598
 599     str << ']';
 600
 601     std::string value(str.str());
 602     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 603 } CYCatch(NULL) }
 604
 605 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 606     CYPool pool;
 607     std::ostringstream str;
 608
 609     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 610     CYStringify(str, string.data, string.size);
 611
 612     std::string value(str.str());
 613     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 614 } CYCatch(NULL) }
 615
 616 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 617     return Pointer::Make(context, pointer, type, context, owner);
 618 }
 619
 620 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), bool variadic, const sig::Signature &signature) {
 621     return JSObjectMake(context, Functor_, new cy::Functor(function, variadic, signature));
 622 }
 623
 624 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 625     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 626     if (function == NULL)
 627         return NULL;
 628
 629     cy::Functor *internal(new cy::Functor(function, encoding));
 630     ++internal->count_;
 631     return JSObjectMake(context, Functor_, internal);
 632 }
 633
 634 bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 635     return CYGetOffset(CYPoolCString(pool, context, value), index);
 636 }
 637
 638 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 639     if (value == NULL)
 640         return NULL;
 641     else switch (JSValueGetType(context, value)) {
 642         case kJSTypeNull:
 643             return NULL;
 644         case kJSTypeObject: {
 645             JSObjectRef object((JSObjectRef) value);
 646             if (JSValueIsObjectOfClass(context, value, Pointer::Class_)) {
 647                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 648                 return internal->value_;
 649             }
 650             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 651             if (CYIsCallable(context, toPointer)) {
 652                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 653                 _assert(value != NULL);
 654                 return CYCastPointer_(context, value, guess);
 655             }
 656         } default:
 657             if (guess != NULL)
 658                 *guess = true;
 659         case kJSTypeNumber:
 660             double number(CYCastDouble(context, value));
 661             if (!std::isnan(number))
 662                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 663             if (guess == NULL)
 664                 throw CYJSError(context, "cannot convert value to pointer");
 665             else {
 666                 *guess = true;
 667                 return NULL;
 668             }
 669     }
 670 }
 671
 672 namespace sig {
 673
 674 // XXX: this is somehow not quite a template :/
 675
 676 template <>
 677 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 678     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 679 }
 680
 681 #define CYPoolFFI_(Type_) \
 682 template <> \
 683 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 684     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 685 }
 686
 687 CYPoolFFI_(char)
 688 CYPoolFFI_(double)
 689 CYPoolFFI_(float)
 690 CYPoolFFI_(signed char)
 691 CYPoolFFI_(signed int)
 692 CYPoolFFI_(signed long int)
 693 CYPoolFFI_(signed long long int)
 694 CYPoolFFI_(signed short int)
 695 CYPoolFFI_(unsigned char)
 696 CYPoolFFI_(unsigned int)
 697 CYPoolFFI_(unsigned long int)
 698 CYPoolFFI_(unsigned long long int)
 699 CYPoolFFI_(unsigned short int)
 700
 701 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 702     _assert(false);
 703 }
 704
 705 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 706     _assert(false);
 707 }
 708
 709 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 710     bool guess(false);
 711     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 712     if (guess && pool != NULL)
 713         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 714 }
 715
 716 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 717     _assert(false);
 718 }
 719
 720 static void CYArrayCopy(CYPool *pool, JSContextRef context, uint8_t *base, size_t length, const sig::Type &type, ffi_type *ffi, JSValueRef value, JSObjectRef object) {
 721     for (size_t index(0); index != length; ++index) {
 722         JSValueRef rhs;
 723         if (object == NULL)
 724             rhs = value;
 725         else {
 726             rhs = CYGetProperty(context, object, index);
 727             if (JSValueIsUndefined(context, rhs))
 728                 throw CYJSError(context, "unable to extract array value");
 729         }
 730
 731         type.PoolFFI(pool, context, ffi, base, rhs);
 732         base += ffi->size;
 733     }
 734 }
 735
 736 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 737     bool guess(false);
 738     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value, &guess);
 739     if (!guess || pool == NULL || !JSValueIsObject(context, value))
 740         return;
 741     JSObjectRef object(CYCastJSObject(context, value));
 742     if (CYHasProperty(context, object, length_s)) {
 743         size_t length(CYArrayLength(context, object));
 744         ffi_type *element(type.GetFFI(*pool));
 745         size_t size(element->size * length);
 746         uint8_t *base(pool->malloc<uint8_t>(size, element->alignment));
 747         CYArrayCopy(pool, context, base, length, type, element, value, object);
 748         *reinterpret_cast<void **>(data) = base;
 749     }
 750 }
 751
 752 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 753     if (size == 0)
 754         return;
 755     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 756     JSObjectRef object(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 757     CYArrayCopy(pool, context, base, size, type, ffi->elements[0], value, object);
 758 }
 759
 760 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 761     _assert(!overlap);
 762
 763     size_t offset(0);
 764     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 765     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 766     for (size_t index(0); index != signature.count; ++index) {
 767         sig::Element *element(&signature.elements[index]);
 768         ffi_type *field(ffi->elements[index]);
 769
 770         JSValueRef rhs;
 771         if (aggregate == NULL)
 772             rhs = value;
 773         else {
 774             rhs = CYGetProperty(context, aggregate, index);
 775             if (JSValueIsUndefined(context, rhs)) {
 776                 if (element->name != NULL)
 777                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 778                 else
 779                     goto undefined;
 780                 if (JSValueIsUndefined(context, rhs)) undefined:
 781                     throw CYJSError(context, "unable to extract structure value");
 782             }
 783         }
 784
 785         element->type->PoolFFI(pool, context, field, base + offset, rhs);
 786         offset += field->size;
 787         CYAlign(offset, field->alignment);
 788     }
 789 }
 790
 791 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 792     _assert(false);
 793 }
 794
 795 #define CYFromFFI_(Type_) \
 796 template <> \
 797 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 798     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 799 }
 800
 801 CYFromFFI_(bool)
 802 CYFromFFI_(char)
 803 CYFromFFI_(double)
 804 CYFromFFI_(float)
 805 CYFromFFI_(signed char)
 806 CYFromFFI_(signed int)
 807 CYFromFFI_(signed long int)
 808 CYFromFFI_(signed long long int)
 809 CYFromFFI_(signed short int)
 810 CYFromFFI_(unsigned char)
 811 CYFromFFI_(unsigned int)
 812 CYFromFFI_(unsigned long int)
 813 CYFromFFI_(unsigned long long int)
 814 CYFromFFI_(unsigned short int)
 815
 816 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 817     return CYJSUndefined(context);
 818 }
 819
 820 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 821     _assert(false);
 822 }
 823
 824 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 825     if (char *value = *reinterpret_cast<char **>(data))
 826         return CString::Make(context, value, context, owner);
 827     return CYJSNull(context);
 828 }
 829
 830 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 831     _assert(false);
 832 }
 833
 834 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 835     if (void *value = *reinterpret_cast<void **>(data))
 836         return CYMakePointer(context, value, type, NULL, owner);
 837     return CYJSNull(context);
 838 }
 839
 840 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 841     return CArray::Make(context, data, size, type, ffi->elements[0], context, owner);
 842 }
 843
 844 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 845     return Struct_privateData::Make(context, data, *this, ffi, context, owner);
 846 }
 847
 848 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 849     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), variadic, signature);
 850 }
 851
 852 }
 853
 854 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 855     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 856
 857     JSContextRef context(internal->function_);
 858
 859     size_t count(internal->cif_.nargs);
 860     JSValueRef values[count];
 861
 862     for (size_t index(0); index != count; ++index)
 863         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 864
 865     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 866     if (internal->cif_.rtype != &ffi_type_void)
 867         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 868 }
 869
 870 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 871     return CYCallAsFunction(context, function, NULL, count, values);
 872 }
 873
 874 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 875 static void CYFreeFunctor(void *data) {
 876     ffi_closure_free(data);
 877 }
 878 #else
 879 static void CYFreeFunctor(void *data) {
 880     _syscall(munmap(data, sizeof(ffi_closure)));
 881 }
 882 #endif
 883
 884 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 885     // XXX: in case of exceptions this will leak
 886     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 887
 888 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 889     void *executable;
 890     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 891
 892     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 893     _assert(status == FFI_OK);
 894
 895     internal->pool_->atexit(&CYFreeFunctor, writable);
 896     internal->value_ = reinterpret_cast<void (*)()>(executable);
 897 #else
 898     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 899         NULL, sizeof(ffi_closure),
 900         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 901         -1, 0
 902     )));
 903
 904     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 905     _assert(status == FFI_OK);
 906
 907     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 908
 909     internal->pool_->atexit(&CYFreeFunctor, closure);
 910     internal->value_ = reinterpret_cast<void (*)()>(closure);
 911 #endif
 912
 913     return internal;
 914 }
 915
 916 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 917     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 918     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 919     // XXX: see above notes about needing to leak
 920     JSValueProtect(CYGetJSContext(context), object);
 921     return object;
 922 }
 923
 924 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 925     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 926 }
 927
 928 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 929     return CYCastJSObject(context, CYGetCachedValue(context, name));
 930 }
 931
 932 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, bool variadic, const sig::Signature &signature) {
 933     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 934
 935     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 936     if (function) {
 937         JSObjectRef function(CYCastJSObject(context, value));
 938         return CYMakeFunctor(context, function, signature);
 939     } else {
 940         void (*function)()(CYCastPointer<void (*)()>(context, value));
 941         return CYMakeFunctor(context, function, variadic, signature);
 942     }
 943 }
 944
 945 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 946     CYPool pool;
 947     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 948
 949     ssize_t offset;
 950     if (!CYGetOffset(pool, context, property, offset))
 951         return NULL;
 952
 953     return CYCastJSValue(context, CYJSString(CYUTF8String(&internal->value_[offset], 1)));
 954 } CYCatch(NULL) }
 955
 956 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 957     CYPool pool;
 958     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 959
 960     ssize_t offset;
 961     if (!CYGetOffset(pool, context, property, offset))
 962         return false;
 963
 964     const char *data(CYPoolCString(pool, context, value));
 965     internal->value_[offset] = *data;
 966     return true;
 967 } CYCatch(false) }
 968
 969 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 970     Type_privateData *typical(internal->type_);
 971     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
 972     if (type == NULL)
 973         return false;
 974
 975     const char *name(CYPoolCString(pool, context, property));
 976     size_t length(strlen(name));
 977     double number(CYCastDouble(name, length));
 978
 979     size_t count(type->signature.count);
 980
 981     if (std::isnan(number)) {
 982         if (property == NULL)
 983             return false;
 984
 985         sig::Element *elements(type->signature.elements);
 986
 987         for (size_t local(0); local != count; ++local) {
 988             sig::Element *element(&elements[local]);
 989             if (element->name != NULL && strcmp(name, element->name) == 0) {
 990                 index = local;
 991                 goto base;
 992             }
 993         }
 994
 995         return false;
 996     } else {
 997         index = static_cast<ssize_t>(number);
 998         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 999             return false;
1000     }
1001
1002   base:
1003     ffi_type **elements(typical->GetFFI()->elements);
1004
1005     size_t offset(0);
1006     for (ssize_t local(0); local != index; ++local) {
1007         offset += elements[local]->size;
1008         CYAlign(offset, elements[local + 1]->alignment);
1009     }
1010
1011     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1012     return true;
1013 }
1014
1015 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1016     ssize_t offset;
1017     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1018         offset = 0;
1019     else if (!CYGetOffset(pool, context, property, offset))
1020         return NULL;
1021     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1022 }
1023
1024 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1025     ffi_type *ffi(typical->GetFFI());
1026     void *base(Offset_(pool, context, property, data, ffi));
1027     if (base == NULL)
1028         return NULL;
1029     return typical->type_->FromFFI(context, ffi, base, false, owner);
1030 }
1031
1032 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1033     ffi_type *ffi(typical->GetFFI());
1034     void *base(Offset_(pool, context, property, data, ffi));
1035     if (base == NULL)
1036         return false;
1037
1038     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1039     return true;
1040 }
1041
1042 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1043     CYPool pool;
1044     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1045     if (JSStringIsEqual(property, length_s))
1046         return CYCastJSValue(context, internal->length_);
1047     Type_privateData *typical(internal->type_);
1048     JSObjectRef owner(internal->owner_ ?: object);
1049     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1050 } CYCatch(NULL) }
1051
1052 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1053     CYPool pool;
1054     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1055     Type_privateData *typical(internal->type_);
1056     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1057 } CYCatch(false) }
1058
1059 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1060     CYPool pool;
1061     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1062
1063     Type_privateData *typical(internal->type_);
1064
1065     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1066         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1067             return NULL;
1068         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->variadic, function->signature);
1069     }
1070
1071     JSObjectRef owner(internal->owner_ ?: object);
1072     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1073 } CYCatch(NULL) }
1074
1075 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1076     CYPool pool;
1077     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1078     Type_privateData *typical(internal->type_);
1079     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1080 } CYCatch(false) }
1081
1082 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1083     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1084     Type_privateData *typical(internal->type_);
1085     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1086 } CYCatch(NULL) }
1087
1088 static JSValueRef Struct_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1089     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1090     return CYMakeType(context, *internal->type_->type_);
1091 } CYCatch(NULL) }
1092
1093 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1094     CYPool pool;
1095     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1096     Type_privateData *typical(internal->type_);
1097     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1098
1099     ssize_t index;
1100     uint8_t *base;
1101
1102     if (!Index_(pool, context, internal, property, index, base))
1103         return NULL;
1104
1105     JSObjectRef owner(internal->owner_ ?: object);
1106
1107     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1108 } CYCatch(NULL) }
1109
1110 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1111     CYPool pool;
1112     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1113     Type_privateData *typical(internal->type_);
1114     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1115
1116     ssize_t index;
1117     uint8_t *base;
1118
1119     if (!Index_(pool, context, internal, property, index, base))
1120         return false;
1121
1122     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1123     return true;
1124 } CYCatch(false) }
1125
1126 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1127     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1128     Type_privateData *typical(internal->type_);
1129     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1130
1131     if (type == NULL)
1132         return;
1133
1134     size_t count(type->signature.count);
1135     sig::Element *elements(type->signature.elements);
1136
1137     char number[32];
1138
1139     for (size_t index(0); index != count; ++index) {
1140         const char *name;
1141         name = elements[index].name;
1142
1143         if (name == NULL) {
1144             sprintf(number, "%zu", index);
1145             name = number;
1146         }
1147
1148         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1149     }
1150 }
1151
1152 static sig::Void Void_;
1153 static sig::Pointer PointerToVoid_(Void_);
1154
1155 static sig::Type *CYGetType(CYPool &pool, JSContextRef context, JSValueRef value) {
1156     if (JSValueIsNull(context, value))
1157         return &PointerToVoid_;
1158     JSObjectRef object(CYCastJSObject(context, value));
1159     JSObjectRef type(CYCastJSObject(context, CYGetProperty(context, object, cyt_s)));
1160     _assert(JSValueIsObjectOfClass(context, type, Type_privateData::Class_));
1161     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(type)));
1162     return internal->type_;
1163 }
1164
1165 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1166     ffi_call(cif, function, value, values);
1167 }
1168
1169 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, bool variadic, const sig::Signature &signature, ffi_cif *cif, void (*function)()) {
1170     size_t have(setups + count);
1171     size_t need(signature.count - 1);
1172
1173     if (have < need)
1174         throw CYJSError(context, "insufficient number of arguments to ffi function");
1175
1176     ffi_cif corrected;
1177     sig::Element *elements(signature.elements);
1178
1179     if (have > need) {
1180         if (!variadic)
1181             throw CYJSError(context, "exorbitant number of arguments to ffi function");
1182
1183         elements = new (pool) sig::Element[have + 1];
1184         memcpy(elements, signature.elements, sizeof(sig::Element) * (need + 1));
1185
1186         for (size_t index(need); index != have; ++index) {
1187             sig::Element &element(elements[index + 1]);
1188             element.name = NULL;
1189             element.offset = _not(size_t);
1190             element.type = CYGetType(pool, context, arguments[index - setups]);
1191         }
1192
1193         sig::Signature extended;
1194         extended.elements = elements;
1195         extended.count = have + 1;
1196         sig::sig_ffi_cif(pool, signature.count, extended, &corrected);
1197         cif = &corrected;
1198     }
1199
1200     void *values[have];
1201     memcpy(values, setup, sizeof(void *) * setups);
1202
1203     for (size_t index(setups); index != have; ++index) {
1204         sig::Element &element(elements[index + 1]);
1205         ffi_type *ffi(cif->arg_types[index]);
1206         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1207         element.type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1208     }
1209
1210     uint8_t value[cif->rtype->size];
1211
1212     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1213     // XXX: this only supports one hook, but it is a bad idea anyway
1214     for (CYHook *hook : GetHooks())
1215         if (hook->CallFunction != NULL)
1216             call = hook->CallFunction;
1217
1218     call(pool, context, cif, function, value, values);
1219     return signature.elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1220 }
1221
1222 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1223     CYPool pool;
1224     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1225     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, internal->variadic_, internal->signature_, &internal->cif_, internal->value_);
1226 } CYCatch(NULL) }
1227
1228 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1229     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1230     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1231         throw CYJSError(context, "cannot call a pointer to non-function");
1232     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1233     return CYCallAsFunction(context, functor, _this, count, arguments);
1234 } CYCatch(NULL) }
1235
1236 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1237     return Type_privateData::Make(context, type);
1238 }
1239
1240 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1241     sqlite3_stmt *statement;
1242
1243     _sqlcall(sqlite3_prepare(database_,
1244         "select "
1245             "\"cache\".\"code\", "
1246             "\"cache\".\"flags\" "
1247         "from \"cache\" "
1248         "where"
1249             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1250             " \"cache\".\"name\" = ?"
1251         " limit 1"
1252     , -1, &statement, NULL));
1253
1254     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1255
1256     bool success;
1257     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1258         success = false;
1259     else {
1260         success = true;
1261         code = sqlite3_column_pooled(pool, statement, 0);
1262         flags = sqlite3_column_int(statement, 1);
1263     }
1264
1265     _sqlcall(sqlite3_finalize(statement));
1266     return success;
1267 }
1268
1269 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1270     if (JSStringIsEqualToUTF8CString(property, "errno"))
1271         return true;
1272
1273     JSObjectRef global(CYGetGlobalObject(context));
1274     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1275     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1276
1277     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1278         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1279             if (CYHasProperty(context, space, property))
1280                 return true;
1281
1282     CYPool pool;
1283     const char *code;
1284     unsigned flags;
1285     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1286         return true;
1287
1288     return false;
1289 }
1290
1291 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1292     if (JSStringIsEqualToUTF8CString(property, "errno"))
1293         return CYCastJSValue(context, errno);
1294
1295     JSObjectRef global(CYGetGlobalObject(context));
1296     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1297     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1298
1299     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1300         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1301             if (JSValueRef value = CYGetProperty(context, space, property))
1302                 if (!JSValueIsUndefined(context, value))
1303                     return value;
1304
1305     CYPool pool;
1306     const char *code;
1307     unsigned flags;
1308     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1309         CYUTF8String parsed;
1310
1311         try {
1312             parsed = CYPoolCode(pool, code);
1313         } catch (const CYException &error) {
1314             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1315         }
1316
1317         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1318
1319         if (flags == 0) {
1320             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1321             CYSetProperty(context, cache, property, result);
1322         }
1323
1324         return result;
1325     }
1326
1327     return NULL;
1328 } CYCatch(NULL) }
1329
1330 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1331     _assert(count == 1);
1332     CYPool pool;
1333     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1334
1335     JSObjectRef array(NULL);
1336
1337     {
1338     CYArrayBuilder<1024> values(context, array);
1339
1340     sqlite3_stmt *statement;
1341
1342     if (prefix.size == 0)
1343         _sqlcall(sqlite3_prepare(database_,
1344             "select "
1345                 "\"cache\".\"name\" "
1346             "from \"cache\" "
1347             "where"
1348                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1349         , -1, &statement, NULL));
1350     else {
1351         _sqlcall(sqlite3_prepare(database_,
1352             "select "
1353                 "\"cache\".\"name\" "
1354             "from \"cache\" "
1355             "where"
1356                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1357                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1358         , -1, &statement, NULL));
1359
1360         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1361
1362         char *after(pool.strndup(prefix.data, prefix.size));
1363         ++after[prefix.size - 1];
1364         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1365     }
1366
1367     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1368         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1369
1370     _sqlcall(sqlite3_finalize(statement));
1371     }
1372
1373     return array;
1374 } CYCatch(NULL) }
1375
1376 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1377     JSObjectRef global(CYGetGlobalObject(context));
1378     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1379     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1380
1381     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1382         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1383             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1384             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1385                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1386             JSPropertyNameArrayRelease(subset);
1387         }
1388 }
1389
1390 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1391     _assert(false);
1392 } CYCatch(NULL) }
1393
1394 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1395     _assert(false);
1396 } CYCatch(NULL) }
1397
1398 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1399     _assert(false);
1400 } CYCatch(NULL) }
1401
1402 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1403     CYPool pool;
1404
1405     if (false) {
1406     } else if (count == 1) {
1407         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1408         sig::Signature signature;
1409         sig::Parse(pool, &signature, encoding, &Structor_);
1410         return CYMakeType(context, *signature.elements[0].type);
1411     } else if (count == 2) {
1412         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1413         size_t count(CYArrayLength(context, types));
1414
1415         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1416
1417         sig::Aggregate type(false);
1418         type.signature.elements = new(pool) sig::Element[count];
1419         type.signature.count = count;
1420
1421         for (size_t i(0); i != count; ++i) {
1422             sig::Element &element(type.signature.elements[i]);
1423             element.offset = _not(size_t);
1424
1425             JSValueRef name(CYArrayGet(context, names, i));
1426             if (JSValueIsUndefined(context, name))
1427                 element.name = NULL;
1428             else
1429                 element.name = CYPoolCString(pool, context, name);
1430
1431             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1432             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1433             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1434             element.type = internal->type_;
1435         }
1436
1437         return CYMakeType(context, type);
1438     } else {
1439         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1440     }
1441 } CYCatch(NULL) }
1442
1443 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1444     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1445
1446     CYPool pool;
1447
1448     type.signature.elements = new(pool) sig::Element[1 + count];
1449     type.signature.count = 1 + count;
1450
1451     type.signature.elements[0].name = NULL;
1452     type.signature.elements[0].type = internal->type_;
1453     type.signature.elements[0].offset = _not(size_t);
1454
1455     for (size_t i(0); i != count; ++i) {
1456         sig::Element &element(type.signature.elements[i + 1]);
1457         element.name = NULL;
1458         element.offset = _not(size_t);
1459
1460         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1461         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1462         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1463
1464         element.type = internal->type_;
1465     }
1466
1467     return CYMakeType(context, type);
1468 } CYCatch(NULL) }
1469
1470 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1471     if (count != 1)
1472         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1473     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1474
1475     CYPool pool;
1476     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1477     if (index == _not(size_t))
1478         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1479
1480     sig::Array type(*internal->type_, index);
1481     return CYMakeType(context, type);
1482 } CYCatch(NULL) }
1483
1484 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1485 #ifdef CY_OBJECTIVEC
1486     sig::Block type;
1487     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1488 #else
1489     _assert(false);
1490 #endif
1491 }
1492
1493 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1494     if (count != 0)
1495         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1496     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1497
1498     CYPool pool;
1499     sig::Type *type(internal->type_->Copy(pool));
1500     type->flags |= JOC_TYPE_CONST;
1501     return CYMakeType(context, *type);
1502 } CYCatch(NULL) }
1503
1504 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1505     bool variadic(count != 0 && JSValueIsNull(context, arguments[count - 1]));
1506     sig::Function type(variadic);
1507     return Type_callAsFunction_$With(context, object, _this, variadic ? count - 1 : count, arguments, type, exception);
1508 }
1509
1510 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1511     if (count != 0)
1512         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1513     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1514
1515     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1516         return CYMakeType(context, sig::String());
1517     else
1518         return CYMakeType(context, sig::Pointer(*internal->type_));
1519 } CYCatch(NULL) }
1520
1521 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1522     if (count != 1)
1523         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1524     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1525
1526     CYPool pool;
1527     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1528 } CYCatch(NULL) }
1529
1530 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1531     if (count != 1)
1532         throw CYJSError(context, "incorrect number of arguments to type cast function");
1533     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1534
1535     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1536         return CYMakeFunctor(context, arguments[0], function->variadic, function->signature);
1537
1538     CYPool pool;
1539     sig::Type *type(internal->type_);
1540     ffi_type *ffi(internal->GetFFI());
1541
1542     void *data(pool.malloc<void>(ffi->size, ffi->alignment));
1543     type->PoolFFI(&pool, context, ffi, data, arguments[0]);
1544     JSValueRef value(type->FromFFI(context, ffi, data));
1545
1546     if (JSValueGetType(context, value) == kJSTypeNumber) {
1547         JSObjectRef typed(_jsccall(JSObjectCallAsConstructor, context, CYGetCachedObject(context, CYJSString("Number")), 1, &value));
1548         CYSetProperty(context, typed, cyt_s, object, kJSPropertyAttributeDontEnum);
1549         value = typed;
1550     }
1551
1552     return value;
1553 } CYCatch(NULL) }
1554
1555 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1556     if (count != 0)
1557         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1558     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1559
1560     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1561     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1562     ffi_type *ffi(internal->GetFFI());
1563     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1564     memset(value->value_, 0, ffi->size);
1565     return pointer;
1566 } CYCatch(NULL) }
1567
1568 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1569     if (count != 2)
1570         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1571     CYPool pool;
1572     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1573     sig::Signature signature;
1574     sig::Parse(pool, &signature, encoding, &Structor_);
1575     return CYMakeFunctor(context, arguments[0], false, signature);
1576 } CYCatch(NULL) }
1577
1578 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1579     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1580     JSObjectRef owner(internal->owner_ ?: object);
1581     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1582 } CYCatch(NULL) }
1583
1584 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1585     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1586     JSObjectRef owner(internal->owner_ ?: object);
1587     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1588 } CYCatch(NULL) }
1589
1590 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1591     CYPool pool;
1592     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1593
1594     sig::Function type(internal->variadic_);
1595     sig::Copy(pool, type.signature, internal->signature_);
1596
1597     return CYMakePointer(context, reinterpret_cast<void *>(internal->value_), type, NULL, NULL);
1598 } CYCatch(NULL) }
1599
1600 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1601     return _this;
1602 } CYCatch(NULL) }
1603
1604 static JSValueRef CArray_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1605     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1606     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1607 } CYCatch(NULL) }
1608
1609 static JSValueRef Pointer_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1610     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1611     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1612 } CYCatch(NULL) }
1613
1614 static JSValueRef Functor_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1615     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1616     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1617 } CYCatch(NULL) }
1618
1619 static JSValueRef Functor_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1620     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1621     uint8_t *value(reinterpret_cast<uint8_t *>(internal->value_));
1622
1623     CYLocalPool pool;
1624
1625     sig::Function function(internal->variadic_);
1626     sig::Copy(pool, function.signature, internal->signature_);
1627
1628     auto typed(CYDecodeType(pool, &function)); {
1629         std::ostringstream str;
1630         Dl_info info;
1631         if (internal->value_ == NULL)
1632             str << "NULL";
1633         else if (dladdr(value, &info) == 0)
1634             str << internal->value_;
1635         else {
1636             str << info.dli_sname;
1637             off_t offset(value - reinterpret_cast<uint8_t *>(info.dli_saddr));
1638             if (offset != 0)
1639                 str << "+0x" << std::hex << offset;
1640         }
1641
1642         typed->identifier_ = new(pool) CYIdentifier(pool.strdup(str.str().c_str()));
1643     }
1644
1645     std::ostringstream str;
1646     CYOptions options;
1647     CYOutput output(*str.rdbuf(), options);
1648     output.pretty_ = true;
1649     (new(pool) CYExternalExpression(new(pool) CYString("C"), typed))->Output(output, CYNoFlags);
1650     return CYCastJSValue(context, CYJSString(str.str()));
1651 } CYCatch(NULL) }
1652
1653 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1654     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1655
1656     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1657
1658     try {
1659         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1660         if (!JSValueIsUndefined(context, value)) {
1661             CYPool pool;
1662             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1663         }
1664     } catch (const CYException &e) {
1665         // XXX: it might be interesting to include this error
1666     }
1667
1668     CYLocalPool pool;
1669     std::ostringstream str;
1670
1671     sig::Pointer type(*internal->type_->type_);
1672
1673     CYOptions options;
1674     CYOutput output(*str.rdbuf(), options);
1675     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1676
1677     str << "(" << internal->value_ << ")";
1678     std::string value(str.str());
1679     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1680 } CYCatch(NULL) }
1681
1682 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1683     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1684     return CYCastJSValue(context, strlen(internal->value_));
1685 } CYCatch(NULL) }
1686
1687 static JSValueRef CString_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1688     return CYMakeType(context, sig::String());
1689 } CYCatch(NULL) }
1690
1691 static JSValueRef CArray_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1692     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1693     sig::Array type(*internal->type_->type_, internal->length_);
1694     return CYMakeType(context, type);
1695 } CYCatch(NULL) }
1696
1697 static JSValueRef Pointer_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1698     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1699     sig::Pointer type(*internal->type_->type_);
1700     return CYMakeType(context, type);
1701 } CYCatch(NULL) }
1702
1703 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1704     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1705     const char *string(internal->value_);
1706     std::ostringstream str;
1707     if (string == NULL)
1708         str << "NULL";
1709     else {
1710         str << "&";
1711         CYStringify(str, string, strlen(string), true);
1712     }
1713     std::string value(str.str());
1714     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1715 } CYCatch(NULL) }
1716
1717 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1718     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1719     return CYCastJSValue(context, internal->value_);
1720 } CYCatch(NULL) }
1721
1722 static JSValueRef Functor_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1723     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1724     CYPool pool;
1725     sig::Function type(internal->variadic_);
1726     sig::Copy(pool, type.signature, internal->signature_);
1727     return CYMakeType(context, type);
1728 } CYCatch(NULL) }
1729
1730 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1731     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1732     return CYCastJSValue(context, internal->GetFFI()->alignment);
1733 } CYCatch(NULL) }
1734
1735 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1736     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1737     return CYCastJSValue(context, internal->type_->GetName());
1738 } CYCatch(NULL) }
1739
1740 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1741     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1742     return CYCastJSValue(context, internal->GetFFI()->size);
1743 } CYCatch(NULL) }
1744
1745 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1746     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1747     CYPool pool;
1748     const char *type(sig::Unparse(pool, internal->type_));
1749     return CYCastJSValue(context, CYJSString(type));
1750 } CYCatch(NULL) }
1751
1752 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1753     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1754     CYLocalPool pool;
1755     std::stringbuf out;
1756     CYOptions options;
1757     CYOutput output(out, options);
1758     output.pretty_ = true;
1759     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_->Copy(pool, ""))))->Output(output, CYNoFlags);
1760     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1761 } CYCatch(NULL) }
1762
1763 static JSStaticFunction All_staticFunctions[2] = {
1764     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1765     {NULL, NULL, 0}
1766 };
1767
1768 static JSStaticFunction CArray_staticFunctions[3] = {
1769     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1770     {"valueOf", &CArray_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1771     {NULL, NULL, 0}
1772 };
1773
1774 static JSStaticValue CArray_staticValues[2] = {
1775     {"$cyt", &CArray_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1776     {NULL, NULL, NULL, 0}
1777 };
1778
1779 static JSStaticFunction CString_staticFunctions[5] = {
1780     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1781     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1782     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1783     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1784     {NULL, NULL, 0}
1785 };
1786
1787 static JSStaticValue CString_staticValues[3] = {
1788     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1789     {"$cyt", &CString_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1790     {NULL, NULL, NULL, 0}
1791 };
1792
1793 static JSStaticFunction Pointer_staticFunctions[4] = {
1794     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1795     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1796     {"valueOf", &Pointer_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1797     {NULL, NULL, 0}
1798 };
1799
1800 static JSStaticValue Pointer_staticValues[2] = {
1801     {"$cyt", &Pointer_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1802     {NULL, NULL, NULL, 0}
1803 };
1804
1805 static JSStaticFunction Struct_staticFunctions[2] = {
1806     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1807     {NULL, NULL, 0}
1808 };
1809
1810 static JSStaticValue Struct_staticValues[2] = {
1811     {"$cyt", &Struct_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1812     {NULL, NULL, NULL, 0}
1813 };
1814
1815 static JSStaticFunction Functor_staticFunctions[4] = {
1816     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1817     {"toCYON", &Functor_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1818     {"valueOf", &Functor_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1819     {NULL, NULL, 0}
1820 };
1821
1822 namespace cy {
1823     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1824 }
1825
1826 static JSStaticValue Functor_staticValues[2] = {
1827     {"$cyt", &Functor_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1828     {NULL, NULL, NULL, 0}
1829 };
1830
1831 namespace cy {
1832     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1833 }
1834
1835 static JSStaticValue Type_staticValues[4] = {
1836     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1837     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1838     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1839     {NULL, NULL, NULL, 0}
1840 };
1841
1842 static JSStaticFunction Type_staticFunctions[9] = {
1843     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1844     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1845     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1846     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1847     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1848     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1849     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1850     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1851     {NULL, NULL, 0}
1852 };
1853
1854 _visible void CYSetArgs(int argc, const char *argv[]) {
1855     JSContextRef context(CYGetJSContext());
1856     JSValueRef args[argc];
1857     for (int i(0); i != argc; ++i)
1858         args[i] = CYCastJSValue(context, argv[i]);
1859
1860     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1861     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1862     CYSetProperty(context, System, CYJSString("args"), array);
1863 }
1864
1865 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1866     return JSContextGetGlobalObject(context);
1867 }
1868
1869 // XXX: this is neither exceptin safe nor even terribly sane
1870 class ExecutionHandle {
1871   private:
1872     JSContextRef context_;
1873     std::vector<void *> handles_;
1874
1875   public:
1876     ExecutionHandle(JSContextRef context) :
1877         context_(context)
1878     {
1879         handles_.resize(GetHooks().size());
1880         for (size_t i(0); i != GetHooks().size(); ++i) {
1881             CYHook *hook(GetHooks()[i]);
1882             if (hook->ExecuteStart != NULL)
1883                 handles_[i] = (*hook->ExecuteStart)(context_);
1884             else
1885                 handles_[i] = NULL;
1886         }
1887     }
1888
1889     ~ExecutionHandle() {
1890         for (size_t i(GetHooks().size()); i != 0; --i) {
1891             CYHook *hook(GetHooks()[i-1]);
1892             if (hook->ExecuteEnd != NULL)
1893                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1894         }
1895     }
1896 };
1897
1898 #ifndef __ANDROID__
1899 static volatile bool cancel_;
1900
1901 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1902     return cancel_;
1903 }
1904 #endif
1905
1906 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1907     ExecutionHandle handle(context);
1908
1909 #ifndef __ANDROID__
1910     cancel_ = false;
1911     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1912         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1913 #endif
1914
1915     try {
1916         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1917         if (JSValueIsUndefined(context, result))
1918             return NULL;
1919
1920         std::set<void *> objects;
1921         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1922         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1923
1924         return json;
1925     } catch (const CYException &error) {
1926         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1927     }
1928 }
1929
1930 #ifndef __ANDROID__
1931 _visible void CYCancel() {
1932     cancel_ = true;
1933 }
1934 #endif
1935
1936 const char *CYPoolLibraryPath(CYPool &pool);
1937
1938 static bool initialized_ = false;
1939
1940 void CYInitializeDynamic() {
1941     if (!initialized_)
1942         initialized_ = true;
1943     else return;
1944
1945     CYPool pool;
1946     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1947     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1948
1949     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1950     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1951
1952     JSClassDefinition definition;
1953
1954     definition = kJSClassDefinitionEmpty;
1955     definition.className = "All";
1956     definition.staticFunctions = All_staticFunctions;
1957     definition.hasProperty = &All_hasProperty;
1958     definition.getProperty = &All_getProperty;
1959     definition.getPropertyNames = &All_getPropertyNames;
1960     All_ = JSClassCreate(&definition);
1961
1962     definition = kJSClassDefinitionEmpty;
1963     definition.className = "Context";
1964     definition.finalize = &CYFinalize;
1965     Context::Class_ = JSClassCreate(&definition);
1966
1967     definition = kJSClassDefinitionEmpty;
1968     definition.className = "CArray";
1969     definition.staticFunctions = CArray_staticFunctions;
1970     definition.staticValues = CArray_staticValues;
1971     definition.getProperty = &CArray_getProperty;
1972     definition.setProperty = &CArray_setProperty;
1973     definition.finalize = &CYFinalize;
1974     CArray::Class_ = JSClassCreate(&definition);
1975
1976     definition = kJSClassDefinitionEmpty;
1977     definition.className = "CString";
1978     definition.staticFunctions = CString_staticFunctions;
1979     definition.staticValues = CString_staticValues;
1980     definition.getProperty = &CString_getProperty;
1981     definition.setProperty = &CString_setProperty;
1982     definition.finalize = &CYFinalize;
1983     CString::Class_ = JSClassCreate(&definition);
1984
1985     definition = kJSClassDefinitionEmpty;
1986     definition.className = "Functor";
1987     definition.staticFunctions = cy::Functor::StaticFunctions;
1988     definition.staticValues = Functor_staticValues;
1989     definition.callAsFunction = &Functor_callAsFunction;
1990     definition.finalize = &CYFinalize;
1991     Functor_ = JSClassCreate(&definition);
1992
1993     definition = kJSClassDefinitionEmpty;
1994     definition.className = "Pointer";
1995     definition.staticFunctions = Pointer_staticFunctions;
1996     definition.staticValues = Pointer_staticValues;
1997     definition.callAsFunction = &Pointer_callAsFunction;
1998     definition.getProperty = &Pointer_getProperty;
1999     definition.setProperty = &Pointer_setProperty;
2000     definition.finalize = &CYFinalize;
2001     Pointer::Class_ = JSClassCreate(&definition);
2002
2003     definition = kJSClassDefinitionEmpty;
2004     definition.className = "Struct";
2005     definition.staticFunctions = Struct_staticFunctions;
2006     definition.staticValues = Struct_staticValues;
2007     definition.getProperty = &Struct_getProperty;
2008     definition.setProperty = &Struct_setProperty;
2009     definition.getPropertyNames = &Struct_getPropertyNames;
2010     definition.finalize = &CYFinalize;
2011     Struct_privateData::Class_ = JSClassCreate(&definition);
2012
2013     definition = kJSClassDefinitionEmpty;
2014     definition.className = "Type";
2015     definition.staticValues = Type_staticValues;
2016     definition.staticFunctions = Type_staticFunctions;
2017     definition.callAsFunction = &Type_callAsFunction;
2018     definition.callAsConstructor = &Type_callAsConstructor;
2019     definition.finalize = &CYFinalize;
2020     Type_privateData::Class_ = JSClassCreate(&definition);
2021
2022     definition = kJSClassDefinitionEmpty;
2023     definition.className = "Global";
2024     //definition.getProperty = &Global_getProperty;
2025     Global_ = JSClassCreate(&definition);
2026
2027     Array_s = JSStringCreateWithUTF8CString("Array");
2028     constructor_s = JSStringCreateWithUTF8CString("constructor");
2029     cy_s = JSStringCreateWithUTF8CString("$cy");
2030     cyi_s = JSStringCreateWithUTF8CString("$cyi");
2031     cyt_s = JSStringCreateWithUTF8CString("$cyt");
2032     length_s = JSStringCreateWithUTF8CString("length");
2033     message_s = JSStringCreateWithUTF8CString("message");
2034     name_s = JSStringCreateWithUTF8CString("name");
2035     pop_s = JSStringCreateWithUTF8CString("pop");
2036     prototype_s = JSStringCreateWithUTF8CString("prototype");
2037     push_s = JSStringCreateWithUTF8CString("push");
2038     splice_s = JSStringCreateWithUTF8CString("splice");
2039     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2040     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2041     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2042     toString_s = JSStringCreateWithUTF8CString("toString");
2043     weak_s = JSStringCreateWithUTF8CString("weak");
2044
2045     Result_ = JSStringCreateWithUTF8CString("_");
2046
2047     for (CYHook *hook : GetHooks())
2048         if (hook->Initialize != NULL)
2049             (*hook->Initialize)();
2050 }
2051
2052 void CYThrow(JSContextRef context, JSValueRef value) {
2053     if (value != NULL)
2054         throw CYJSError(context, value);
2055 }
2056
2057 const char *CYJSError::PoolCString(CYPool &pool) const {
2058     std::set<void *> objects;
2059     // XXX: this used to be CYPoolCString
2060     return CYPoolCCYON(pool, context_, value_, objects);
2061 }
2062
2063 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2064     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2065     return value_;
2066 }
2067
2068 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2069     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2070     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2071     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2072 }
2073
2074 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2075     return CYCastJSError(context, name, message_);
2076 }
2077
2078 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2079     _assert(context != NULL);
2080
2081     CYPool pool;
2082
2083     va_list args;
2084     va_start(args, format);
2085     // XXX: there might be a beter way to think about this
2086     const char *message(pool.vsprintf(64, format, args));
2087     va_end(args);
2088
2089     value_ = CYCastJSError(context, "Error", message);
2090 }
2091
2092 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2093     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2094 }
2095
2096 const char *CYPoolLibraryPath(CYPool &pool) {
2097     Dl_info addr;
2098     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2099     char *lib(pool.strdup(addr.dli_fname));
2100
2101     char *slash(strrchr(lib, '/'));
2102     if (slash == NULL)
2103         return ".";
2104     *slash = '\0';
2105
2106     slash = strrchr(lib, '/');
2107     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2108         *slash = '\0';
2109
2110     return lib;
2111 }
2112
2113 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2114     _assert(count == 1);
2115     CYPool pool;
2116
2117     const char *name(CYPoolCString(pool, context, arguments[0]));
2118     if (strchr(name, '/') == NULL && (
2119 #ifdef __APPLE__
2120         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2121         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2122 #endif
2123     false))
2124         return CYJSUndefined(context);
2125
2126     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2127     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2128
2129     CYJSString property("exports");
2130
2131     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2132     JSValueRef cache(CYGetProperty(context, modules, path));
2133
2134     JSValueRef result;
2135     if (!JSValueIsUndefined(context, cache)) {
2136         JSObjectRef module(CYCastJSObject(context, cache));
2137         result = CYGetProperty(context, module, property);
2138     } else {
2139         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2140         _assert(code.data != NULL);
2141
2142         size_t length(strlen(name));
2143         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2144             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2145             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2146             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2147             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2148         } else {
2149             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2150             CYSetProperty(context, modules, path, module);
2151
2152             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2153             CYSetProperty(context, module, property, exports);
2154
2155             std::stringstream wrap;
2156             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2157             code = CYPoolCode(pool, *wrap.rdbuf());
2158
2159             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2160             JSObjectRef function(CYCastJSObject(context, value));
2161
2162             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2163             CYCallAsFunction(context, function, NULL, 4, arguments);
2164             result = CYGetProperty(context, module, property);
2165         }
2166     }
2167
2168     return result;
2169 } CYCatch(NULL) }
2170
2171 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2172     CYPool pool;
2173     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2174     if (code.data == NULL)
2175         return false;
2176
2177     code = CYPoolCode(pool, code);
2178     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2179     return true;
2180 }
2181
2182 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2183 }
2184
2185 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2186     CYInitializeDynamic();
2187
2188     JSObjectRef global(CYGetGlobalObject(context));
2189
2190     JSObjectRef cy(Context::Make(context, context));
2191     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2192
2193 /* Cache Globals {{{ */
2194     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2195     CYSetProperty(context, cy, CYJSString("Array"), Array);
2196
2197     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2198     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2199
2200     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2201     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2202
2203     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2204     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2205
2206     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2207     CYSetProperty(context, cy, CYJSString("Error"), Error);
2208
2209     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2210     CYSetProperty(context, cy, CYJSString("Function"), Function);
2211
2212     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2213     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2214
2215     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2216     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2217
2218     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2219     CYSetProperty(context, cy, CYJSString("Number"), Number);
2220
2221     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2222     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2223
2224     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2225     CYSetProperty(context, cy, CYJSString("Object"), Object);
2226
2227     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2228     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2229
2230     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2231     CYSetProperty(context, cy, CYJSString("String"), String);
2232
2233     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2234     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2235
2236     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2237     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2238 /* }}} */
2239
2240     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2241     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2242
2243     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2244     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2245     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2246     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2247
2248     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray::Class_, &CArray_new));
2249     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2250     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2251
2252     JSObjectRef CString(JSObjectMakeConstructor(context, CString::Class_, &CString_new));
2253     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2254     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2255
2256     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2257     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2258     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2259
2260     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer::Class_, &Pointer_new));
2261     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2262
2263     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2264     CYSetProperty(context, cy, CYJSString("modules"), modules);
2265
2266     JSObjectRef all(JSObjectMake(context, All_, NULL));
2267     CYSetProperty(context, cycript, CYJSString("all"), all);
2268
2269     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2270     CYSetProperty(context, cy, CYJSString("cache"), cache);
2271     CYSetPrototype(context, cache, all);
2272
2273     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2274     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2275
2276     if (true) {
2277         JSObjectRef last(NULL), curr(global);
2278
2279         goto next; for (JSValueRef next;;) {
2280             if (JSValueIsNull(context, next))
2281                 break;
2282             last = curr;
2283             curr = CYCastJSObject(context, next);
2284           next:
2285             next = JSObjectGetPrototype(context, curr);
2286         }
2287
2288         CYSetPrototype(context, last, cache);
2289     }
2290
2291     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2292     CYSetProperty(context, cy, CYJSString("System"), System);
2293
2294     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2295
2296     CYSetProperty(context, global, CYJSString("system"), System);
2297     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2298     CYSetProperty(context, System, CYJSString("print"), &System_print);
2299
2300     CYSetProperty(context, global, CYJSString("global"), global);
2301
2302 #ifdef __APPLE__
2303     if (&JSWeakObjectMapCreate != NULL) {
2304         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2305         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2306     }
2307 #endif
2308
2309     CYSetProperty(context, String_prototype, cyt_s, CYMakeType(context, sig::String()), kJSPropertyAttributeDontEnum);
2310
2311     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2312     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2313     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2314
2315     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2316
2317     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2318     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2319     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2320     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2321
2322     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2323     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2324     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2325     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2326
2327     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2328     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2329     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2330     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2331
2332     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2333     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2334
2335     for (CYHook *hook : GetHooks())
2336         if (hook->SetupContext != NULL)
2337             (*hook->SetupContext)(context);
2338
2339     CYArrayPush(context, alls, cycript);
2340
2341     CYRunScript(context, "/libcycript.cy");
2342 }
2343
2344 static JSGlobalContextRef context_;
2345
2346 _visible JSGlobalContextRef CYGetJSContext() {
2347     CYInitializeDynamic();
2348
2349     if (context_ == NULL) {
2350         context_ = JSGlobalContextCreate(Global_);
2351         CYSetupContext(context_);
2352     }
2353
2354     return context_;
2355 }
2356
2357 _visible void CYDestroyContext() {
2358     if (context_ == NULL)
2359         return;
2360     JSGlobalContextRelease(context_);
2361     context_ = NULL;
2362 }