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