Execute.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2013  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU General Public License, Version 3 {{{ */
   6 /*
   7  * Cycript is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published
   9  * by the Free Software Foundation, either version 3 of the License,
  10  * or (at your option) any later version.
  11  *
  12  * Cycript is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with Cycript.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "Internal.hpp"
  23
  24 #include <dlfcn.h>
  25 #include <dirent.h>
  26 #include <fcntl.h>
  27 #include <unistd.h>
  28
  29 #include "cycript.hpp"
  30
  31 #include "sig/parse.hpp"
  32 #include "sig/ffi_type.hpp"
  33
  34 #include "Pooling.hpp"
  35 #include "Execute.hpp"
  36
  37 #include <sys/mman.h>
  38 #include <sys/stat.h>
  39
  40 #include <iostream>
  41 #include <set>
  42 #include <map>
  43 #include <iomanip>
  44 #include <sstream>
  45 #include <cmath>
  46
  47 #include "Code.hpp"
  48 #include "Decode.hpp"
  49 #include "Error.hpp"
  50 #include "JavaScript.hpp"
  51 #include "String.hpp"
  52
  53 struct CYHooks *hooks_;
  54
  55 /* JavaScript Properties {{{ */
  56 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  57     return JSObjectHasProperty(context, object, name);
  58 }
  59
  60 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  61     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  62 }
  63
  64 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  65     return _jsccall(JSObjectGetProperty, context, object, name);
  66 }
  67
  68 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  69     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  70 }
  71
  72 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  73     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  74 }
  75
  76 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  77     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  78 }
  79 /* }}} */
  80 /* JavaScript Strings {{{ */
  81 JSStringRef CYCopyJSString(const char *value) {
  82     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  83 }
  84
  85 JSStringRef CYCopyJSString(JSStringRef value) {
  86     return value == NULL ? NULL : JSStringRetain(value);
  87 }
  88
  89 JSStringRef CYCopyJSString(CYUTF8String value) {
  90     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
  91     return CYCopyJSString(value.data);
  92 }
  93
  94 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
  95     if (JSValueIsNull(context, value))
  96         return NULL;
  97     return _jsccall(JSValueToStringCopy, context, value);
  98 }
  99
 100 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 101     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 102 }
 103
 104 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 105     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 106 }
 107
 108 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 109     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 110     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 111     return utf8.data;
 112 }
 113
 114 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 115     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 116 }
 117 /* }}} */
 118 /* Index Offsets {{{ */
 119 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 120     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 121 }
 122 /* }}} */
 123
 124 static JSClassRef All_;
 125 static JSClassRef Context_;
 126 JSClassRef Functor_;
 127 static JSClassRef Global_;
 128 static JSClassRef Pointer_;
 129 static JSClassRef Struct_;
 130
 131 JSStringRef Array_s;
 132 JSStringRef cy_s;
 133 JSStringRef cyi_s;
 134 JSStringRef length_s;
 135 JSStringRef message_s;
 136 JSStringRef name_s;
 137 JSStringRef pop_s;
 138 JSStringRef prototype_s;
 139 JSStringRef push_s;
 140 JSStringRef splice_s;
 141 JSStringRef toCYON_s;
 142 JSStringRef toJSON_s;
 143 JSStringRef toPointer_s;
 144 JSStringRef toString_s;
 145
 146 static JSStringRef Result_;
 147
 148 void CYFinalize(JSObjectRef object) {
 149     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 150     _assert(internal->count_ != _not(unsigned));
 151     if (--internal->count_ == 0)
 152         delete internal;
 153 }
 154
 155 void Structor_(CYPool &pool, sig::Type *&type) {
 156     if (
 157         type->primitive == sig::pointer_P &&
 158         type->data.data.type->primitive == sig::struct_P &&
 159         type->data.data.type->name != NULL &&
 160         strcmp(type->data.data.type->name, "_objc_class") == 0
 161     ) {
 162         type->primitive = sig::typename_P;
 163         type->data.data.type = NULL;
 164         return;
 165     }
 166
 167     if (type->primitive != sig::struct_P || type->name == NULL)
 168         return;
 169
 170     size_t length(strlen(type->name));
 171     char keyed[length + 2];
 172     memcpy(keyed + 1, type->name, length + 1);
 173
 174     static const char *modes = "34";
 175     for (size_t i(0); i != 2; ++i) {
 176         char mode(modes[i]);
 177         keyed[0] = mode;
 178
 179         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 180             switch (mode) {
 181                 case '3':
 182                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 183                 break;
 184
 185                 case '4': {
 186                     sig::Signature signature;
 187                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 188                     type = signature.elements[0].type;
 189                 } break;
 190             }
 191     }
 192 }
 193
 194 JSClassRef Type_privateData::Class_;
 195
 196 struct Context :
 197     CYData
 198 {
 199     JSGlobalContextRef context_;
 200
 201     Context(JSGlobalContextRef context) :
 202         context_(context)
 203     {
 204     }
 205 };
 206
 207 struct Pointer :
 208     CYOwned
 209 {
 210     Type_privateData *type_;
 211     size_t length_;
 212
 213     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 214         CYOwned(value, context, owner),
 215         type_(new(*pool_) Type_privateData(type)),
 216         length_(length)
 217     {
 218     }
 219 };
 220
 221 struct Struct_privateData :
 222     CYOwned
 223 {
 224     Type_privateData *type_;
 225
 226     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 227         CYOwned(NULL, context, owner)
 228     {
 229     }
 230 };
 231
 232 typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
 233 static TypeMap Types_;
 234
 235 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 236     Struct_privateData *internal(new Struct_privateData(context, owner));
 237     CYPool &pool(*internal->pool_);
 238     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 239     internal->type_ = typical;
 240
 241     if (owner != NULL)
 242         internal->value_ = data;
 243     else {
 244         size_t size(typical->GetFFI()->size);
 245         void *copy(internal->pool_->malloc<void>(size));
 246         memcpy(copy, data, size);
 247         internal->value_ = copy;
 248     }
 249
 250     return JSObjectMake(context, Struct_, internal);
 251 }
 252
 253 static void *CYCastSymbol(const char *name) {
 254     return dlsym(RTLD_DEFAULT, name);
 255 }
 256
 257 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 258     return JSValueMakeBoolean(context, value);
 259 }
 260
 261 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 262     return JSValueMakeNumber(context, value);
 263 }
 264
 265 #define CYCastJSValue_(Type_) \
 266     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 267         return JSValueMakeNumber(context, static_cast<double>(value)); \
 268     }
 269
 270 CYCastJSValue_(int)
 271 CYCastJSValue_(unsigned int)
 272 CYCastJSValue_(long int)
 273 CYCastJSValue_(long unsigned int)
 274 CYCastJSValue_(long long int)
 275 CYCastJSValue_(long long unsigned int)
 276
 277 JSValueRef CYJSUndefined(JSContextRef context) {
 278     return JSValueMakeUndefined(context);
 279 }
 280
 281 double CYCastDouble(JSContextRef context, JSValueRef value) {
 282     return _jsccall(JSValueToNumber, context, value);
 283 }
 284
 285 bool CYCastBool(JSContextRef context, JSValueRef value) {
 286     return JSValueToBoolean(context, value);
 287 }
 288
 289 JSValueRef CYJSNull(JSContextRef context) {
 290     return JSValueMakeNull(context);
 291 }
 292
 293 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 294     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 295 }
 296
 297 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 298     return CYCastJSValue(context, CYJSString(value));
 299 }
 300
 301 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 302     return _jsccall(JSValueToObject, context, value);
 303 }
 304
 305 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 306     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 307 }
 308
 309 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 310     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 311 }
 312
 313 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 314     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 315 }
 316
 317 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 318     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 319 }
 320
 321 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 322     JSValueRef arguments[1];
 323     arguments[0] = value;
 324     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 325     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 326 }
 327
 328 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 329     if (count == 0)
 330         printf("\n");
 331     else {
 332         CYPool pool;
 333         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 334     }
 335
 336     return CYJSUndefined(context);
 337 } CYCatch(NULL) }
 338
 339 static size_t Nonce_(0);
 340
 341 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 342     CYPool pool;
 343     const char *name(pool.strcat(CYPoolCString(pool, context, arguments[0]), pool.itoa(Nonce_++), NULL));
 344     return CYCastJSValue(context, name);
 345 } CYCatch(NULL) }
 346
 347 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 348
 349 void CYGarbageCollect(JSContextRef context) {
 350     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 351 }
 352
 353 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 354     CYGarbageCollect(context);
 355     return CYJSUndefined(context);
 356 } CYCatch(NULL) }
 357
 358 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, JSValueRef *exception) { CYTry {
 359     switch (JSType type = JSValueGetType(context, value)) {
 360         case kJSTypeUndefined:
 361             return "undefined";
 362         case kJSTypeNull:
 363             return "null";
 364         case kJSTypeBoolean:
 365             return CYCastBool(context, value) ? "true" : "false";
 366
 367         case kJSTypeNumber: {
 368             std::ostringstream str;
 369             CYNumerify(str, CYCastDouble(context, value));
 370             std::string value(str.str());
 371             return pool.strmemdup(value.c_str(), value.size());
 372         } break;
 373
 374         case kJSTypeString: {
 375             std::ostringstream str;
 376             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 377             CYStringify(str, string.data, string.size);
 378             std::string value(str.str());
 379             return pool.strmemdup(value.c_str(), value.size());
 380         } break;
 381
 382         case kJSTypeObject:
 383             return CYPoolCCYON(pool, context, (JSObjectRef) value);
 384         default:
 385             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 386     }
 387 } CYCatch(NULL) }
 388
 389 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value) {
 390     return _jsccall(CYPoolCCYON, pool, context, value);
 391 }
 392
 393 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object) {
 394     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 395     if (CYIsCallable(context, toCYON)) {
 396         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 0, NULL));
 397         _assert(value != NULL);
 398         return CYPoolCString(pool, context, value);
 399     }
 400
 401     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 402     if (CYIsCallable(context, toJSON)) {
 403         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 404         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments));
 405     }
 406
 407     if (JSObjectIsFunction(context, object)) {
 408         JSValueRef toString(CYGetProperty(context, object, toString_s));
 409         if (CYIsCallable(context, toString)) {
 410             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 411             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 412             _assert(value != NULL);
 413             return CYPoolCString(pool, context, value);
 414         }
 415     }
 416
 417     std::ostringstream str;
 418
 419     str << '{';
 420
 421     // XXX: this is, sadly, going to leak
 422     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 423
 424     bool comma(false);
 425
 426     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 427         if (comma)
 428             str << ',';
 429         else
 430             comma = true;
 431
 432         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 433         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 434
 435         if (CYIsKey(string))
 436             str << string.data;
 437         else
 438             CYStringify(str, string.data, string.size);
 439
 440         str << ':';
 441
 442         try {
 443             JSValueRef value(CYGetProperty(context, object, name));
 444             str << CYPoolCCYON(pool, context, value);
 445         } catch (const CYException &error) {
 446             str << "@error";
 447         }
 448     }
 449
 450     JSPropertyNameArrayRelease(names);
 451
 452     str << '}';
 453
 454     std::string string(str.str());
 455     return pool.strmemdup(string.c_str(), string.size());
 456 }
 457
 458 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 459     CYPool pool;
 460     std::ostringstream str;
 461
 462     str << '[';
 463
 464     JSValueRef length(CYGetProperty(context, _this, length_s));
 465     bool comma(false);
 466
 467     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 468         if (comma)
 469             str << ',';
 470         else
 471             comma = true;
 472
 473         try {
 474             JSValueRef value(CYGetProperty(context, _this, index));
 475             if (!JSValueIsUndefined(context, value))
 476                 str << CYPoolCCYON(pool, context, value);
 477             else {
 478                 str << ',';
 479                 comma = false;
 480             }
 481         } catch (const CYException &error) {
 482             str << "@error";
 483         }
 484     }
 485
 486     str << ']';
 487
 488     std::string value(str.str());
 489     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 490 } CYCatch(NULL) }
 491
 492 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 493     CYPool pool;
 494     std::ostringstream str;
 495
 496     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 497     CYStringify(str, string.data, string.size);
 498
 499     std::string value(str.str());
 500     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 501 } CYCatch(NULL) }
 502
 503 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 504     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 505     return JSObjectMake(context, Pointer_, internal);
 506 }
 507
 508 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 509     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 510 }
 511
 512 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 513     cy::Functor *internal;
 514     if (*cache != NULL)
 515         internal = reinterpret_cast<cy::Functor *>(*cache);
 516     else {
 517         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 518         if (function == NULL)
 519             return NULL;
 520
 521         internal = new cy::Functor(encoding, function);
 522         *cache = internal;
 523     }
 524
 525     ++internal->count_;
 526     return JSObjectMake(context, Functor_, internal);
 527 }
 528
 529 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 530     return CYGetOffset(CYPoolCString(pool, context, value), index);
 531 }
 532
 533 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 534     switch (JSValueGetType(context, value)) {
 535         case kJSTypeNull:
 536             return NULL;
 537         case kJSTypeObject: {
 538             JSObjectRef object((JSObjectRef) value);
 539             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 540                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 541                 return internal->value_;
 542             }
 543             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 544             if (CYIsCallable(context, toPointer)) {
 545                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 546                 _assert(value != NULL);
 547                 return CYCastPointer_(context, value);
 548             }
 549         } default:
 550             double number(CYCastDouble(context, value));
 551             if (std::isnan(number))
 552                 throw CYJSError(context, "cannot convert value to pointer");
 553             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 554     }
 555 }
 556
 557 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 558     switch (type->primitive) {
 559         case sig::boolean_P:
 560             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 561         break;
 562
 563 #define CYPoolFFI_(primitive, native) \
 564         case sig::primitive ## _P: \
 565             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 566         break;
 567
 568         CYPoolFFI_(uchar, unsigned char)
 569         CYPoolFFI_(char, char)
 570         CYPoolFFI_(ushort, unsigned short)
 571         CYPoolFFI_(short, short)
 572         CYPoolFFI_(ulong, unsigned long)
 573         CYPoolFFI_(long, long)
 574         CYPoolFFI_(uint, unsigned int)
 575         CYPoolFFI_(int, int)
 576         CYPoolFFI_(ulonglong, unsigned long long)
 577         CYPoolFFI_(longlong, long long)
 578         CYPoolFFI_(float, float)
 579         CYPoolFFI_(double, double)
 580
 581         case sig::array_P: {
 582             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 583             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 584             for (size_t index(0); index != type->data.data.size; ++index) {
 585                 ffi_type *field(ffi->elements[index]);
 586
 587                 JSValueRef rhs;
 588                 if (aggregate == NULL)
 589                     rhs = value;
 590                 else {
 591                     rhs = CYGetProperty(context, aggregate, index);
 592                     if (JSValueIsUndefined(context, rhs))
 593                         throw CYJSError(context, "unable to extract array value");
 594                 }
 595
 596                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 597                 // XXX: alignment?
 598                 base += field->size;
 599             }
 600         } break;
 601
 602         case sig::pointer_P:
 603             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 604         break;
 605
 606         case sig::string_P:
 607             _assert(pool != NULL);
 608             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 609         break;
 610
 611         case sig::struct_P: {
 612             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 613             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 614             for (size_t index(0); index != type->data.signature.count; ++index) {
 615                 sig::Element *element(&type->data.signature.elements[index]);
 616                 ffi_type *field(ffi->elements[index]);
 617
 618                 JSValueRef rhs;
 619                 if (aggregate == NULL)
 620                     rhs = value;
 621                 else {
 622                     rhs = CYGetProperty(context, aggregate, index);
 623                     if (JSValueIsUndefined(context, rhs)) {
 624                         if (element->name != NULL)
 625                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 626                         else
 627                             goto undefined;
 628                         if (JSValueIsUndefined(context, rhs)) undefined:
 629                             throw CYJSError(context, "unable to extract structure value");
 630                     }
 631                 }
 632
 633                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 634                 // XXX: alignment?
 635                 base += field->size;
 636             }
 637         } break;
 638
 639         case sig::void_P:
 640         break;
 641
 642         default:
 643             if (hooks_ != NULL && hooks_->PoolFFI != NULL)
 644                 if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
 645                     return;
 646
 647             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 648     }
 649 }
 650
 651 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 652     switch (type->primitive) {
 653         case sig::boolean_P:
 654             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 655
 656 #define CYFromFFI_(primitive, native) \
 657         case sig::primitive ## _P: \
 658             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 659
 660         CYFromFFI_(uchar, unsigned char)
 661         CYFromFFI_(char, char)
 662         CYFromFFI_(ushort, unsigned short)
 663         CYFromFFI_(short, short)
 664         CYFromFFI_(ulong, unsigned long)
 665         CYFromFFI_(long, long)
 666         CYFromFFI_(uint, unsigned int)
 667         CYFromFFI_(int, int)
 668         CYFromFFI_(ulonglong, unsigned long long)
 669         CYFromFFI_(longlong, long long)
 670         CYFromFFI_(float, float)
 671         CYFromFFI_(double, double)
 672
 673         case sig::array_P:
 674             if (void *pointer = data)
 675                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 676             else goto null;
 677
 678         case sig::pointer_P:
 679             if (void *pointer = *reinterpret_cast<void **>(data))
 680                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 681             else goto null;
 682
 683         case sig::string_P:
 684             if (char *utf8 = *reinterpret_cast<char **>(data))
 685                 return CYCastJSValue(context, utf8);
 686             else goto null;
 687
 688         case sig::struct_P:
 689             return CYMakeStruct(context, data, type, ffi, owner);
 690         case sig::void_P:
 691             return CYJSUndefined(context);
 692
 693         null:
 694             return CYJSNull(context);
 695         default:
 696             if (hooks_ != NULL && hooks_->FromFFI != NULL)
 697                 if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
 698                     return value;
 699
 700             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 701     }
 702 }
 703
 704 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 705     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 706
 707     JSContextRef context(internal->context_);
 708
 709     size_t count(internal->cif_.nargs);
 710     JSValueRef values[count];
 711
 712     for (size_t index(0); index != count; ++index)
 713         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 714
 715     JSValueRef value(adapter(context, count, values, internal->function_));
 716     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 717 }
 718
 719 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 720     return CYCallAsFunction(context, function, NULL, count, values);
 721 }
 722
 723 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 724     CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
 725 }
 726
 727 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
 728     // XXX: in case of exceptions this will leak
 729     // XXX: in point of fact, this may /need/ to leak :(
 730     Closure_privateData *internal(new Closure_privateData(context, function, signature));
 731
 732 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 733     void *executable;
 734     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 735
 736     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
 737     _assert(status == FFI_OK);
 738
 739     internal->value_ = executable;
 740 #else
 741     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 742         NULL, sizeof(ffi_closure),
 743         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 744         -1, 0
 745     )));
 746
 747     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 748     _assert(status == FFI_OK);
 749
 750     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 751
 752     internal->value_ = closure;
 753 #endif
 754
 755     return internal;
 756 }
 757
 758 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 759     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
 760     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 761     // XXX: see above notes about needing to leak
 762     JSValueProtect(CYGetJSContext(context), object);
 763     return object;
 764 }
 765
 766 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 767     return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
 768 }
 769
 770 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 771     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 772
 773     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 774     if (function) {
 775         JSObjectRef function(CYCastJSObject(context, value));
 776         return CYMakeFunctor(context, function, signature);
 777     } else {
 778         void (*function)()(CYCastPointer<void (*)()>(context, value));
 779         return CYMakeFunctor(context, function, signature);
 780     }
 781 }
 782
 783 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 784     Type_privateData *typical(internal->type_);
 785     sig::Type *type(typical->type_);
 786     if (type == NULL)
 787         return false;
 788
 789     const char *name(CYPoolCString(pool, context, property));
 790     size_t length(strlen(name));
 791     double number(CYCastDouble(name, length));
 792
 793     size_t count(type->data.signature.count);
 794
 795     if (std::isnan(number)) {
 796         if (property == NULL)
 797             return false;
 798
 799         sig::Element *elements(type->data.signature.elements);
 800
 801         for (size_t local(0); local != count; ++local) {
 802             sig::Element *element(&elements[local]);
 803             if (element->name != NULL && strcmp(name, element->name) == 0) {
 804                 index = local;
 805                 goto base;
 806             }
 807         }
 808
 809         return false;
 810     } else {
 811         index = static_cast<ssize_t>(number);
 812         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 813             return false;
 814     }
 815
 816   base:
 817     ffi_type **elements(typical->GetFFI()->elements);
 818
 819     base = reinterpret_cast<uint8_t *>(internal->value_);
 820     for (ssize_t local(0); local != index; ++local)
 821         base += elements[local]->size;
 822
 823     return true;
 824 }
 825
 826 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 827     CYPool pool;
 828     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 829
 830     if (JSStringIsEqual(property, length_s))
 831         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 832
 833     Type_privateData *typical(internal->type_);
 834     if (typical->type_ == NULL)
 835         return NULL;
 836     sig::Type &type(*typical->type_);
 837
 838     ssize_t offset;
 839     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 840         offset = 0;
 841     else if (!CYGetOffset(pool, context, property, offset))
 842         return NULL;
 843
 844     if (type.primitive == sig::function_P)
 845         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 846
 847     ffi_type *ffi(typical->GetFFI());
 848
 849     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 850     base += ffi->size * offset;
 851
 852     JSObjectRef owner(internal->GetOwner() ?: object);
 853     return CYFromFFI(context, &type, ffi, base, false, owner);
 854 } CYCatch(NULL) }
 855
 856 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 857     CYPool pool;
 858     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 859     Type_privateData *typical(internal->type_);
 860
 861     if (typical->type_ == NULL)
 862         return false;
 863
 864     ssize_t offset;
 865     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 866         offset = 0;
 867     else if (!CYGetOffset(pool, context, property, offset))
 868         return false;
 869
 870     ffi_type *ffi(typical->GetFFI());
 871
 872     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 873     base += ffi->size * offset;
 874
 875     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 876     return true;
 877 } CYCatch(false) }
 878
 879 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 880     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 881     Type_privateData *typical(internal->type_);
 882     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 883 } CYCatch(NULL) }
 884
 885 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 886     CYPool pool;
 887     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 888     Type_privateData *typical(internal->type_);
 889
 890     ssize_t index;
 891     uint8_t *base;
 892
 893     if (!Index_(pool, context, internal, property, index, base))
 894         return NULL;
 895
 896     JSObjectRef owner(internal->GetOwner() ?: object);
 897
 898     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 899 } CYCatch(NULL) }
 900
 901 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 902     CYPool pool;
 903     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 904     Type_privateData *typical(internal->type_);
 905
 906     ssize_t index;
 907     uint8_t *base;
 908
 909     if (!Index_(pool, context, internal, property, index, base))
 910         return false;
 911
 912     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 913     return true;
 914 } CYCatch(false) }
 915
 916 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 917     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 918     Type_privateData *typical(internal->type_);
 919     sig::Type *type(typical->type_);
 920
 921     if (type == NULL)
 922         return;
 923
 924     size_t count(type->data.signature.count);
 925     sig::Element *elements(type->data.signature.elements);
 926
 927     char number[32];
 928
 929     for (size_t index(0); index != count; ++index) {
 930         const char *name;
 931         name = elements[index].name;
 932
 933         if (name == NULL) {
 934             sprintf(number, "%zu", index);
 935             name = number;
 936         }
 937
 938         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 939     }
 940 }
 941
 942 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, sig::Signature *signature, ffi_cif *cif, void (*function)()) {
 943     if (setups + count != signature->count - 1)
 944         throw CYJSError(context, "incorrect number of arguments to ffi function");
 945
 946     size_t size(setups + count);
 947     void *values[size];
 948     memcpy(values, setup, sizeof(void *) * setups);
 949
 950     for (size_t index(setups); index != size; ++index) {
 951         sig::Element *element(&signature->elements[index + 1]);
 952         ffi_type *ffi(cif->arg_types[index]);
 953         // XXX: alignment?
 954         values[index] = new(pool) uint8_t[ffi->size];
 955         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
 956     }
 957
 958     uint8_t value[cif->rtype->size];
 959
 960     if (hooks_ != NULL && hooks_->CallFunction != NULL)
 961         (*hooks_->CallFunction)(context, cif, function, value, values);
 962     else
 963         ffi_call(cif, function, value, values);
 964
 965     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
 966 }
 967
 968 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 969     CYPool pool;
 970     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
 971     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
 972 } CYCatch(NULL) }
 973
 974 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
 975     Type_privateData *internal(new Type_privateData(encoding));
 976     return JSObjectMake(context, Type_privateData::Class_, internal);
 977 }
 978
 979 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
 980     Type_privateData *internal(new Type_privateData(type));
 981     return JSObjectMake(context, Type_privateData::Class_, internal);
 982 }
 983
 984 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
 985     CYPool pool;
 986
 987     sig::Type type;
 988     type.name = NULL;
 989     type.flags = 0;
 990
 991     type.primitive = sig::function_P;
 992     sig::Copy(pool, type.data.signature, *signature);
 993
 994     return CYMakeType(context, &type);
 995 }
 996
 997 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
 998     JSObjectRef global(CYGetGlobalObject(context));
 999     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1000     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1001
1002     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1003         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1004             if (CYHasProperty(context, space, property))
1005                 return true;
1006
1007     CYPool pool;
1008     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1009
1010     size_t length(name.size);
1011     char keyed[length + 2];
1012     memcpy(keyed + 1, name.data, length + 1);
1013
1014     static const char *modes = "0124";
1015     for (size_t i(0); i != 4; ++i) {
1016         keyed[0] = modes[i];
1017         if (CYBridgeHash(keyed, length + 1) != NULL)
1018             return true;
1019     }
1020
1021     return false;
1022 }
1023
1024 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1025     JSObjectRef global(CYGetGlobalObject(context));
1026     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1027     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1028
1029     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1030         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1031             if (JSValueRef value = CYGetProperty(context, space, property))
1032                 if (!JSValueIsUndefined(context, value))
1033                     return value;
1034
1035     CYPool pool;
1036     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1037
1038     size_t length(name.size);
1039     char keyed[length + 2];
1040     memcpy(keyed + 1, name.data, length + 1);
1041
1042     static const char *modes = "0124";
1043     for (size_t i(0); i != 4; ++i) {
1044         char mode(modes[i]);
1045         keyed[0] = mode;
1046
1047         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1048             switch (mode) {
1049                 case '0':
1050                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1051
1052                 case '1':
1053                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1054
1055                 case '2':
1056                     if (void *symbol = CYCastSymbol(name.data)) {
1057                         // XXX: this is horrendously inefficient
1058                         sig::Signature signature;
1059                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1060                         ffi_cif cif;
1061                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1062                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1063                     } else return NULL;
1064
1065                 // XXX: implement case 3
1066                 case '4':
1067                     return CYMakeType(context, entry->value_);
1068             }
1069     }
1070
1071     return NULL;
1072 } CYCatch(NULL) }
1073
1074 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1075     JSObjectRef global(CYGetGlobalObject(context));
1076     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1077     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1078
1079     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1080         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1081             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1082             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1083                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1084             JSPropertyNameArrayRelease(subset);
1085         }
1086 }
1087
1088 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1089     if (count != 2)
1090         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1091
1092     CYPool pool;
1093
1094     void *value(CYCastPointer<void *>(context, arguments[0]));
1095     const char *type(CYPoolCString(pool, context, arguments[1]));
1096
1097     sig::Signature signature;
1098     sig::Parse(pool, &signature, type, &Structor_);
1099
1100     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1101 } CYCatch(NULL) }
1102
1103 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1104     if (count != 1)
1105         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1106     CYPool pool;
1107     const char *type(CYPoolCString(pool, context, arguments[0]));
1108     return CYMakeType(context, type);
1109 } CYCatch(NULL) }
1110
1111 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1112     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1113
1114     CYPool pool;
1115
1116     sig::Type type;
1117     type.name = NULL;
1118     type.flags = 0;
1119
1120     type.primitive = primitive;
1121     type.data.signature.elements = new(pool) sig::Element[1 + count];
1122     type.data.signature.count = 1 + count;
1123
1124     type.data.signature.elements[0].name = NULL;
1125     type.data.signature.elements[0].type = internal->type_;
1126     type.data.signature.elements[0].offset = _not(size_t);
1127
1128     for (size_t i(0); i != count; ++i) {
1129         sig::Element &element(type.data.signature.elements[i + 1]);
1130         element.name = NULL;
1131         element.offset = _not(size_t);
1132
1133         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1134         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1135         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1136
1137         element.type = internal->type_;
1138     }
1139
1140     return CYMakeType(context, &type);
1141 } CYCatch(NULL) }
1142
1143 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1144     if (count != 1)
1145         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1146     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1147
1148     CYPool pool;
1149     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1150     if (index == _not(size_t))
1151         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1152
1153     sig::Type type;
1154     type.name = NULL;
1155     type.flags = 0;
1156
1157     type.primitive = sig::array_P;
1158     type.data.data.type = internal->type_;
1159     type.data.data.size = index;
1160
1161     return CYMakeType(context, &type);
1162 } CYCatch(NULL) }
1163
1164 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1165     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1166 }
1167
1168 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1169     if (count != 0)
1170         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1171     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1172
1173     sig::Type type(*internal->type_);
1174     type.flags |= JOC_TYPE_CONST;
1175     return CYMakeType(context, &type);
1176 } CYCatch(NULL) }
1177
1178 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1179     if (count != 0)
1180         throw CYJSError(context, "incorrect number of arguments to Type.long");
1181     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1182
1183     sig::Type type(*internal->type_);
1184
1185     switch (type.primitive) {
1186         case sig::short_P: type.primitive = sig::int_P; break;
1187         case sig::int_P: type.primitive = sig::long_P; break;
1188         case sig::long_P: type.primitive = sig::longlong_P; break;
1189         default: throw CYJSError(context, "invalid type argument to Type.long");
1190     }
1191
1192     return CYMakeType(context, &type);
1193 } CYCatch(NULL) }
1194
1195 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1196     if (count != 0)
1197         throw CYJSError(context, "incorrect number of arguments to Type.short");
1198     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1199
1200     sig::Type type(*internal->type_);
1201
1202     switch (type.primitive) {
1203         case sig::int_P: type.primitive = sig::short_P; break;
1204         case sig::long_P: type.primitive = sig::int_P; break;
1205         case sig::longlong_P: type.primitive = sig::long_P; break;
1206         default: throw CYJSError(context, "invalid type argument to Type.short");
1207     }
1208
1209     return CYMakeType(context, &type);
1210 } CYCatch(NULL) }
1211
1212 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1213     if (count != 0)
1214         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1215     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1216
1217     sig::Type type(*internal->type_);
1218
1219     switch (type.primitive) {
1220         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1221         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1222         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1223         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1224         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1225         default: throw CYJSError(context, "invalid type argument to Type.signed");
1226     }
1227
1228     return CYMakeType(context, &type);
1229 } CYCatch(NULL) }
1230
1231 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1232     if (count != 0)
1233         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1234     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1235
1236     sig::Type type(*internal->type_);
1237
1238     switch (type.primitive) {
1239         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1240         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1241         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1242         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1243         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1244         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1245     }
1246
1247     return CYMakeType(context, &type);
1248 } CYCatch(NULL) }
1249
1250 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1251     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1252 }
1253
1254 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1255     if (count != 0)
1256         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1257     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1258
1259     sig::Type type;
1260     type.name = NULL;
1261
1262     if (internal->type_->primitive == sig::char_P) {
1263         type.flags = internal->type_->flags;
1264         type.primitive = sig::string_P;
1265         type.data.data.type = NULL;
1266         type.data.data.size = 0;
1267     } else {
1268         type.flags = 0;
1269         type.primitive = sig::pointer_P;
1270         type.data.data.type = internal->type_;
1271         type.data.data.size = 0;
1272     }
1273
1274     return CYMakeType(context, &type);
1275 } CYCatch(NULL) }
1276
1277 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1278     if (count != 1)
1279         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1280     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1281
1282     CYPool pool;
1283     const char *name(CYPoolCString(pool, context, arguments[0]));
1284
1285     sig::Type type(*internal->type_);
1286     type.name = name;
1287     return CYMakeType(context, &type);
1288 } CYCatch(NULL) }
1289
1290 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1291     if (count != 1)
1292         throw CYJSError(context, "incorrect number of arguments to type cast function");
1293     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1294
1295     if (internal->type_->primitive == sig::function_P)
1296         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1297
1298     sig::Type *type(internal->type_);
1299     ffi_type *ffi(internal->GetFFI());
1300     // XXX: alignment?
1301     uint8_t value[ffi->size];
1302     CYPool pool;
1303     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1304     return CYFromFFI(context, type, ffi, value);
1305 } CYCatch(NULL) }
1306
1307 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1308     if (count != 0)
1309         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1310     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1311
1312     sig::Type *type(internal->type_);
1313     size_t length;
1314
1315     if (type->primitive != sig::array_P)
1316         length = _not(size_t);
1317     else {
1318         length = type->data.data.size;
1319         type = type->data.data.type;
1320     }
1321
1322     void *value(calloc(1, internal->GetFFI()->size));
1323     return CYMakePointer(context, value, length, type, NULL, NULL);
1324 } CYCatch(NULL) }
1325
1326 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1327     if (count != 2)
1328         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1329     CYPool pool;
1330     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1331     sig::Signature signature;
1332     sig::Parse(pool, &signature, encoding, &Structor_);
1333     return CYMakeFunctor(context, arguments[0], signature);
1334 } CYCatch(NULL) }
1335
1336 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1337     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1338     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1339 } CYCatch(NULL) }
1340
1341 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1342     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1343 }
1344
1345 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1346     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1347     char string[32];
1348     sprintf(string, "%p", internal->value_);
1349     return CYCastJSValue(context, string);
1350 } CYCatch(NULL) }
1351
1352 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1353     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1354     if (internal->length_ != _not(size_t)) {
1355         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1356         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1357         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1358     } else if (internal->type_->type_ == NULL) pointer: {
1359         char string[32];
1360         sprintf(string, "%p", internal->value_);
1361         return CYCastJSValue(context, string);
1362     } try {
1363         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1364         if (JSValueIsUndefined(context, value))
1365             goto pointer;
1366         CYPool pool;
1367         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value), NULL));
1368     } catch (const CYException &e) {
1369         goto pointer;
1370     }
1371 } CYCatch(NULL) }
1372
1373 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1374     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1375     return CYMakeType(context, internal->type_->type_);
1376 } CYCatch(NULL) }
1377
1378 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1379     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1380     return CYMakeType(context, &internal->signature_);
1381 } CYCatch(NULL) }
1382
1383 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1384     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1385     return CYCastJSValue(context, internal->GetFFI()->alignment);
1386 } CYCatch(NULL) }
1387
1388 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1389     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1390     return CYCastJSValue(context, internal->type_->name);
1391 } CYCatch(NULL) }
1392
1393 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1394     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1395     return CYCastJSValue(context, internal->GetFFI()->size);
1396 } CYCatch(NULL) }
1397
1398 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1399     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1400     CYPool pool;
1401     const char *type(sig::Unparse(pool, internal->type_));
1402     return CYCastJSValue(context, CYJSString(type));
1403 } CYCatch(NULL) }
1404
1405 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1406     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1407     CYLocalPool pool;
1408     std::ostringstream out;
1409     CYOptions options;
1410     CYOutput output(out, options);
1411     (new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1412     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1413 } CYCatch(NULL) }
1414
1415 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1416     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1417 }
1418
1419 static JSStaticFunction Pointer_staticFunctions[4] = {
1420     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1421     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1422     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1423     {NULL, NULL, 0}
1424 };
1425
1426 static JSStaticValue Pointer_staticValues[2] = {
1427     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1428     {NULL, NULL, NULL, 0}
1429 };
1430
1431 static JSStaticFunction Struct_staticFunctions[2] = {
1432     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1433     {NULL, NULL, 0}
1434 };
1435
1436 static JSStaticFunction Functor_staticFunctions[4] = {
1437     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1438     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1439     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1440     {NULL, NULL, 0}
1441 };
1442
1443 namespace cy {
1444     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1445 }
1446
1447 static JSStaticValue Functor_staticValues[2] = {
1448     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1449     {NULL, NULL, NULL, 0}
1450 };
1451
1452 namespace cy {
1453     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1454 }
1455
1456 static JSStaticValue Type_staticValues[4] = {
1457     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1458     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1459     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1460     {NULL, NULL, NULL, 0}
1461 };
1462
1463 static JSStaticFunction Type_staticFunctions[14] = {
1464     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1465     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1466     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1467     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1468     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1469     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1470     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1471     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1472     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1473     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1474     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1475     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1476     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1477     {NULL, NULL, 0}
1478 };
1479
1480 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1481
1482 void CYSetArgs(int argc, const char *argv[]) {
1483     JSContextRef context(CYGetJSContext());
1484     JSValueRef args[argc];
1485     for (int i(0); i != argc; ++i)
1486         args[i] = CYCastJSValue(context, argv[i]);
1487
1488     JSObjectRef array;
1489     if (JSObjectMakeArray$ != NULL)
1490         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1491     else {
1492         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1493         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1494         array = CYCastJSObject(context, value);
1495     }
1496
1497     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1498     CYSetProperty(context, System, CYJSString("args"), array);
1499 }
1500
1501 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1502     return JSContextGetGlobalObject(context);
1503 }
1504
1505 class ExecutionHandle {
1506   private:
1507     JSContextRef context_;
1508     void *handle_;
1509
1510   public:
1511     ExecutionHandle(JSContextRef context) :
1512         context_(context)
1513     {
1514         if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
1515             handle_ = (*hooks_->ExecuteStart)(context_);
1516         else
1517             handle_ = NULL;
1518     }
1519
1520     ~ExecutionHandle() {
1521         if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
1522             (*hooks_->ExecuteEnd)(context_, handle_);
1523     }
1524 };
1525
1526 const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1527     JSValueRef exception(NULL);
1528
1529     ExecutionHandle handle(context);
1530
1531     JSValueRef result; try {
1532         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1533     } catch (const char *error) {
1534         return error;
1535     }
1536
1537     if (exception != NULL) error:
1538         return CYPoolCString(pool, context, CYJSString(context, exception));
1539
1540     if (JSValueIsUndefined(context, result))
1541         return NULL;
1542
1543     const char *json; try {
1544         json = CYPoolCCYON(pool, context, result, &exception);
1545     } catch (const char *error) {
1546         return error;
1547     }
1548
1549     if (exception != NULL)
1550         goto error;
1551
1552     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1553
1554     return json;
1555 }
1556
1557 static bool initialized_ = false;
1558
1559 void CYInitializeDynamic() {
1560     if (!initialized_)
1561         initialized_ = true;
1562     else return;
1563
1564     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1565     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1566
1567     JSClassDefinition definition;
1568
1569     definition = kJSClassDefinitionEmpty;
1570     definition.className = "All";
1571     definition.hasProperty = &All_hasProperty;
1572     definition.getProperty = &All_getProperty;
1573     definition.getPropertyNames = &All_getPropertyNames;
1574     All_ = JSClassCreate(&definition);
1575
1576     definition = kJSClassDefinitionEmpty;
1577     definition.className = "Context";
1578     definition.finalize = &CYFinalize;
1579     Context_ = JSClassCreate(&definition);
1580
1581     definition = kJSClassDefinitionEmpty;
1582     definition.className = "Functor";
1583     definition.staticFunctions = cy::Functor::StaticFunctions;
1584     definition.staticValues = Functor_staticValues;
1585     definition.callAsFunction = &Functor_callAsFunction;
1586     definition.finalize = &CYFinalize;
1587     Functor_ = JSClassCreate(&definition);
1588
1589     definition = kJSClassDefinitionEmpty;
1590     definition.className = "Pointer";
1591     definition.staticFunctions = Pointer_staticFunctions;
1592     definition.staticValues = Pointer_staticValues;
1593     definition.getProperty = &Pointer_getProperty;
1594     definition.setProperty = &Pointer_setProperty;
1595     definition.finalize = &CYFinalize;
1596     Pointer_ = JSClassCreate(&definition);
1597
1598     definition = kJSClassDefinitionEmpty;
1599     definition.className = "Struct";
1600     definition.staticFunctions = Struct_staticFunctions;
1601     definition.getProperty = &Struct_getProperty;
1602     definition.setProperty = &Struct_setProperty;
1603     definition.getPropertyNames = &Struct_getPropertyNames;
1604     definition.finalize = &CYFinalize;
1605     Struct_ = JSClassCreate(&definition);
1606
1607     definition = kJSClassDefinitionEmpty;
1608     definition.className = "Type";
1609     definition.staticValues = Type_staticValues;
1610     definition.staticFunctions = Type_staticFunctions;
1611     definition.callAsFunction = &Type_callAsFunction;
1612     definition.callAsConstructor = &Type_callAsConstructor;
1613     definition.finalize = &CYFinalize;
1614     Type_privateData::Class_ = JSClassCreate(&definition);
1615
1616     definition = kJSClassDefinitionEmpty;
1617     definition.className = "Global";
1618     //definition.getProperty = &Global_getProperty;
1619     Global_ = JSClassCreate(&definition);
1620
1621     Array_s = JSStringCreateWithUTF8CString("Array");
1622     cy_s = JSStringCreateWithUTF8CString("$cy");
1623     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1624     length_s = JSStringCreateWithUTF8CString("length");
1625     message_s = JSStringCreateWithUTF8CString("message");
1626     name_s = JSStringCreateWithUTF8CString("name");
1627     pop_s = JSStringCreateWithUTF8CString("pop");
1628     prototype_s = JSStringCreateWithUTF8CString("prototype");
1629     push_s = JSStringCreateWithUTF8CString("push");
1630     splice_s = JSStringCreateWithUTF8CString("splice");
1631     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1632     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1633     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1634     toString_s = JSStringCreateWithUTF8CString("toString");
1635
1636     Result_ = JSStringCreateWithUTF8CString("_");
1637
1638     if (hooks_ != NULL && hooks_->Initialize != NULL)
1639         (*hooks_->Initialize)();
1640 }
1641
1642 void CYThrow(JSContextRef context, JSValueRef value) {
1643     if (value != NULL)
1644         throw CYJSError(context, value);
1645 }
1646
1647 const char *CYJSError::PoolCString(CYPool &pool) const {
1648     // XXX: this used to be CYPoolCString
1649     return CYPoolCCYON(pool, context_, value_);
1650 }
1651
1652 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1653     // XXX: what if the context is different?
1654     return value_;
1655 }
1656
1657 JSValueRef CYCastJSError(JSContextRef context, const char *message) {
1658     JSObjectRef Error(CYGetCachedObject(context, CYJSString("Error")));
1659     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1660     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1661 }
1662
1663 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1664     return CYCastJSError(context, message_);
1665 }
1666
1667 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1668     _assert(context != NULL);
1669
1670     CYPool pool;
1671
1672     va_list args;
1673     va_start(args, format);
1674     // XXX: there might be a beter way to think about this
1675     const char *message(pool.vsprintf(64, format, args));
1676     va_end(args);
1677
1678     value_ = CYCastJSError(context, message);
1679 }
1680
1681 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1682     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1683 }
1684
1685 extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
1686
1687 void *CYMapFile(const char *path, size_t *psize) {
1688     int fd(_syscall_(open(path, O_RDONLY), 1, {ENOENT}));
1689     if (fd == -1)
1690         return NULL;
1691
1692     struct stat stat;
1693     _syscall(fstat(fd, &stat));
1694     size_t size(stat.st_size);
1695
1696     *psize = size;
1697
1698     void *base;
1699     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1700
1701     _syscall(close(fd));
1702     return base;
1703 }
1704
1705 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1706     _assert(count == 1);
1707     CYPool pool;
1708
1709     Dl_info addr;
1710     _assert(dladdr(reinterpret_cast<void *>(&require), &addr) != 0);
1711     char *lib(pool.strdup(addr.dli_fname));
1712
1713     char *slash(strrchr(lib, '/'));
1714     _assert(slash != NULL);
1715     *slash = '\0';
1716
1717     CYJSString property("exports");
1718     JSObjectRef module;
1719
1720     const char *name(CYPoolCString(pool, context, arguments[0]));
1721     const char *path(pool.strcat(lib, "/cycript0.9/", name, ".cy", NULL));
1722
1723     CYJSString key(path);
1724     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1725     JSValueRef cache(CYGetProperty(context, modules, key));
1726
1727     if (!JSValueIsUndefined(context, cache))
1728         module = CYCastJSObject(context, cache);
1729     else {
1730         CYUTF8String code;
1731         code.data = reinterpret_cast<char *>(CYMapFile(path, &code.size));
1732
1733         if (code.data == NULL) {
1734             if (strchr(name, '/') == NULL && (
1735                 dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1736                 dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1737             false))
1738                 return CYJSUndefined(NULL);
1739
1740             CYThrow("Can't find module: %s", name);
1741         }
1742
1743         module = JSObjectMake(context, NULL, NULL);
1744         CYSetProperty(context, modules, key, module);
1745
1746         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1747         CYSetProperty(context, module, property, exports);
1748
1749         std::stringstream wrap;
1750         wrap << "(function (exports, require, module) { " << code << "\n});";
1751         code = CYPoolCode(pool, wrap);
1752
1753         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1754         JSObjectRef function(CYCastJSObject(context, value));
1755
1756         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1757         CYCallAsFunction(context, function, NULL, 3, arguments);
1758     }
1759
1760     return CYGetProperty(context, module, property);
1761 } CYCatch(NULL) }
1762
1763 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1764     CYInitializeDynamic();
1765
1766     JSObjectRef global(CYGetGlobalObject(context));
1767
1768     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1769     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1770
1771 /* Cache Globals {{{ */
1772     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1773     CYSetProperty(context, cy, CYJSString("Array"), Array);
1774
1775     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1776     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1777
1778     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
1779     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
1780
1781     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
1782     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
1783
1784     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1785     CYSetProperty(context, cy, CYJSString("Error"), Error);
1786
1787     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1788     CYSetProperty(context, cy, CYJSString("Function"), Function);
1789
1790     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1791     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1792
1793     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
1794     CYSetProperty(context, cy, CYJSString("Number"), Number);
1795
1796     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
1797     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
1798
1799     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1800     CYSetProperty(context, cy, CYJSString("Object"), Object);
1801
1802     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1803     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1804
1805     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1806     CYSetProperty(context, cy, CYJSString("String"), String);
1807
1808     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1809     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1810 /* }}} */
1811
1812     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1813     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1814
1815     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1816     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1817     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1818
1819     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1820     JSObjectSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1821     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1822
1823     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1824     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1825
1826     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1827     CYSetProperty(context, cy, CYJSString("modules"), modules);
1828
1829     JSObjectRef all(JSObjectMake(context, All_, NULL));
1830     CYSetProperty(context, cycript, CYJSString("all"), all);
1831
1832     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1833     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1834
1835     if (true) {
1836         JSObjectRef last(NULL), curr(global);
1837
1838         goto next; for (JSValueRef next;;) {
1839             if (JSValueIsNull(context, next))
1840                 break;
1841             last = curr;
1842             curr = CYCastJSObject(context, next);
1843           next:
1844             next = JSObjectGetPrototype(context, curr);
1845         }
1846
1847         JSObjectSetPrototype(context, last, all);
1848     }
1849
1850     CYSetProperty(context, global, CYJSString("$cyq"), &$cyq, kJSPropertyAttributeDontEnum);
1851
1852     JSObjectRef System(JSObjectMake(context, NULL, NULL));
1853     CYSetProperty(context, cy, CYJSString("System"), System);
1854
1855     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
1856
1857     CYSetProperty(context, global, CYJSString("system"), System);
1858     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
1859     //CYSetProperty(context, System, CYJSString("global"), global);
1860     CYSetProperty(context, System, CYJSString("print"), &System_print);
1861
1862     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
1863         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
1864
1865     if (hooks_ != NULL && hooks_->SetupContext != NULL)
1866         (*hooks_->SetupContext)(context);
1867
1868     CYArrayPush(context, alls, cycript);
1869 }
1870
1871 static JSGlobalContextRef context_;
1872
1873 JSGlobalContextRef CYGetJSContext() {
1874     CYInitializeDynamic();
1875
1876     if (context_ == NULL) {
1877         context_ = JSGlobalContextCreate(Global_);
1878         CYSetupContext(context_);
1879     }
1880
1881     return context_;
1882 }
1883
1884 void CYDestroyContext() {
1885     if (context_ == NULL)
1886         return;
1887     JSGlobalContextRelease(context_);
1888     context_ = NULL;
1889 }