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 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  81     JSObjectSetPrototype(context, object, value);
  82     _assert(JSObjectGetPrototype(context, object) == value);
  83 }
  84 /* }}} */
  85 /* JavaScript Strings {{{ */
  86 JSStringRef CYCopyJSString(const char *value) {
  87     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  88 }
  89
  90 JSStringRef CYCopyJSString(JSStringRef value) {
  91     return value == NULL ? NULL : JSStringRetain(value);
  92 }
  93
  94 JSStringRef CYCopyJSString(CYUTF8String value) {
  95     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
  96     return CYCopyJSString(value.data);
  97 }
  98
  99 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 100     if (JSValueIsNull(context, value))
 101         return NULL;
 102     return _jsccall(JSValueToStringCopy, context, value);
 103 }
 104
 105 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 106     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 107 }
 108
 109 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 110     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 111 }
 112
 113 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 114     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 115     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 116     return utf8.data;
 117 }
 118
 119 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 120     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 121 }
 122 /* }}} */
 123 /* Index Offsets {{{ */
 124 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 125     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 126 }
 127 /* }}} */
 128
 129 static JSClassRef All_;
 130 static JSClassRef Context_;
 131 JSClassRef Functor_;
 132 static JSClassRef Global_;
 133 static JSClassRef Pointer_;
 134 static JSClassRef Struct_;
 135
 136 JSStringRef Array_s;
 137 JSStringRef cy_s;
 138 JSStringRef cyi_s;
 139 JSStringRef length_s;
 140 JSStringRef message_s;
 141 JSStringRef name_s;
 142 JSStringRef pop_s;
 143 JSStringRef prototype_s;
 144 JSStringRef push_s;
 145 JSStringRef splice_s;
 146 JSStringRef toCYON_s;
 147 JSStringRef toJSON_s;
 148 JSStringRef toPointer_s;
 149 JSStringRef toString_s;
 150
 151 static JSStringRef Result_;
 152
 153 void CYFinalize(JSObjectRef object) {
 154     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 155     _assert(internal->count_ != _not(unsigned));
 156     if (--internal->count_ == 0)
 157         delete internal;
 158 }
 159
 160 void Structor_(CYPool &pool, sig::Type *&type) {
 161     if (
 162         type->primitive == sig::pointer_P &&
 163         type->data.data.type->primitive == sig::struct_P &&
 164         type->data.data.type->name != NULL &&
 165         strcmp(type->data.data.type->name, "_objc_class") == 0
 166     ) {
 167         type->primitive = sig::typename_P;
 168         type->data.data.type = NULL;
 169         return;
 170     }
 171
 172     if (type->primitive != sig::struct_P || type->name == NULL)
 173         return;
 174
 175     size_t length(strlen(type->name));
 176     char keyed[length + 2];
 177     memcpy(keyed + 1, type->name, length + 1);
 178
 179     static const char *modes = "34";
 180     for (size_t i(0); i != 2; ++i) {
 181         char mode(modes[i]);
 182         keyed[0] = mode;
 183
 184         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 185             switch (mode) {
 186                 case '3':
 187                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 188                 break;
 189
 190                 case '4': {
 191                     sig::Signature signature;
 192                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 193                     type = signature.elements[0].type;
 194                 } break;
 195             }
 196     }
 197 }
 198
 199 JSClassRef Type_privateData::Class_;
 200
 201 struct Context :
 202     CYData
 203 {
 204     JSGlobalContextRef context_;
 205
 206     Context(JSGlobalContextRef context) :
 207         context_(context)
 208     {
 209     }
 210 };
 211
 212 struct Pointer :
 213     CYOwned
 214 {
 215     Type_privateData *type_;
 216     size_t length_;
 217
 218     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 219         CYOwned(value, context, owner),
 220         type_(new(*pool_) Type_privateData(type)),
 221         length_(length)
 222     {
 223     }
 224 };
 225
 226 struct Struct_privateData :
 227     CYOwned
 228 {
 229     Type_privateData *type_;
 230
 231     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 232         CYOwned(NULL, context, owner)
 233     {
 234     }
 235 };
 236
 237 typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
 238 static TypeMap Types_;
 239
 240 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 241     Struct_privateData *internal(new Struct_privateData(context, owner));
 242     CYPool &pool(*internal->pool_);
 243     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 244     internal->type_ = typical;
 245
 246     if (owner != NULL)
 247         internal->value_ = data;
 248     else {
 249         size_t size(typical->GetFFI()->size);
 250         void *copy(internal->pool_->malloc<void>(size));
 251         memcpy(copy, data, size);
 252         internal->value_ = copy;
 253     }
 254
 255     return JSObjectMake(context, Struct_, internal);
 256 }
 257
 258 static void *CYCastSymbol(const char *name) {
 259     return dlsym(RTLD_DEFAULT, name);
 260 }
 261
 262 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 263     return JSValueMakeBoolean(context, value);
 264 }
 265
 266 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 267     return JSValueMakeNumber(context, value);
 268 }
 269
 270 #define CYCastJSValue_(Type_) \
 271     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 272         return JSValueMakeNumber(context, static_cast<double>(value)); \
 273     }
 274
 275 CYCastJSValue_(int)
 276 CYCastJSValue_(unsigned int)
 277 CYCastJSValue_(long int)
 278 CYCastJSValue_(long unsigned int)
 279 CYCastJSValue_(long long int)
 280 CYCastJSValue_(long long unsigned int)
 281
 282 JSValueRef CYJSUndefined(JSContextRef context) {
 283     return JSValueMakeUndefined(context);
 284 }
 285
 286 double CYCastDouble(JSContextRef context, JSValueRef value) {
 287     return _jsccall(JSValueToNumber, context, value);
 288 }
 289
 290 bool CYCastBool(JSContextRef context, JSValueRef value) {
 291     return JSValueToBoolean(context, value);
 292 }
 293
 294 JSValueRef CYJSNull(JSContextRef context) {
 295     return JSValueMakeNull(context);
 296 }
 297
 298 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 299     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 300 }
 301
 302 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 303     return CYCastJSValue(context, CYJSString(value));
 304 }
 305
 306 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 307     return _jsccall(JSValueToObject, context, value);
 308 }
 309
 310 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 311     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 312 }
 313
 314 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 315     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 316 }
 317
 318 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 319     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 320 }
 321
 322 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 323     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 324 }
 325
 326 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 327     JSValueRef arguments[1];
 328     arguments[0] = value;
 329     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 330     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 331 }
 332
 333 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 334     if (count == 0)
 335         printf("\n");
 336     else {
 337         CYPool pool;
 338         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 339     }
 340
 341     return CYJSUndefined(context);
 342 } CYCatch(NULL) }
 343
 344 static size_t Nonce_(0);
 345
 346 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 347     CYPool pool;
 348     const char *name(pool.strcat(CYPoolCString(pool, context, arguments[0]), pool.itoa(Nonce_++), NULL));
 349     return CYCastJSValue(context, name);
 350 } CYCatch(NULL) }
 351
 352 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 353
 354 void CYGarbageCollect(JSContextRef context) {
 355     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 356 }
 357
 358 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 359     CYGarbageCollect(context);
 360     return CYJSUndefined(context);
 361 } CYCatch(NULL) }
 362
 363 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 364     switch (JSType type = JSValueGetType(context, value)) {
 365         case kJSTypeUndefined:
 366             return "undefined";
 367         case kJSTypeNull:
 368             return "null";
 369         case kJSTypeBoolean:
 370             return CYCastBool(context, value) ? "true" : "false";
 371
 372         case kJSTypeNumber: {
 373             std::ostringstream str;
 374             CYNumerify(str, CYCastDouble(context, value));
 375             std::string value(str.str());
 376             return pool.strmemdup(value.c_str(), value.size());
 377         } break;
 378
 379         case kJSTypeString: {
 380             std::ostringstream str;
 381             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 382             CYStringify(str, string.data, string.size);
 383             std::string value(str.str());
 384             return pool.strmemdup(value.c_str(), value.size());
 385         } break;
 386
 387         case kJSTypeObject:
 388             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 389         default:
 390             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 391     }
 392 } CYCatch(NULL) }
 393
 394 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 395     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 396 }
 397
 398 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 399     if (objects != NULL)
 400         return CYPoolCCYON(pool, context, value, *objects);
 401     else {
 402         std::set<void *> objects;
 403         return CYPoolCCYON(pool, context, value, objects);
 404     }
 405 }
 406
 407 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 408     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 409     if (CYIsCallable(context, toCYON)) {
 410         // XXX: this needs to be abstracted behind some kind of function
 411         JSValueRef arguments[1] = {CYCastJSValue(context, static_cast<double>(reinterpret_cast<uintptr_t>(&objects)))};
 412         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 413         _assert(value != NULL);
 414         return CYPoolCString(pool, context, value);
 415     }
 416
 417     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 418     if (CYIsCallable(context, toJSON)) {
 419         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 420         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 421     }
 422
 423     if (JSObjectIsFunction(context, object)) {
 424         JSValueRef toString(CYGetProperty(context, object, toString_s));
 425         if (CYIsCallable(context, toString)) {
 426             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 427             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 428             _assert(value != NULL);
 429             return CYPoolCString(pool, context, value);
 430         }
 431     }
 432
 433     _assert(objects.insert(object).second);
 434
 435     std::ostringstream str;
 436
 437     str << '{';
 438
 439     // XXX: this is, sadly, going to leak
 440     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 441
 442     bool comma(false);
 443
 444     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 445         if (comma)
 446             str << ',';
 447         else
 448             comma = true;
 449
 450         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 451         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 452
 453         if (CYIsKey(string))
 454             str << string.data;
 455         else
 456             CYStringify(str, string.data, string.size);
 457
 458         str << ':';
 459
 460         try {
 461             JSValueRef value(CYGetProperty(context, object, name));
 462             str << CYPoolCCYON(pool, context, value, objects);
 463         } catch (const CYException &error) {
 464             str << "@error";
 465         }
 466     }
 467
 468     JSPropertyNameArrayRelease(names);
 469
 470     str << '}';
 471
 472     std::string string(str.str());
 473     return pool.strmemdup(string.c_str(), string.size());
 474 }
 475
 476 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 477     if (count == 0)
 478         return NULL;
 479     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 480 }
 481
 482 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 483     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 484     // XXX: this is horribly inefficient
 485     std::set<void *> backup;
 486     if (objects == NULL)
 487         objects = &backup;
 488
 489     CYPool pool;
 490     std::ostringstream str;
 491
 492     str << '[';
 493
 494     JSValueRef length(CYGetProperty(context, _this, length_s));
 495     bool comma(false);
 496
 497     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 498         if (comma)
 499             str << ',';
 500         else
 501             comma = true;
 502
 503         try {
 504             JSValueRef value(CYGetProperty(context, _this, index));
 505             if (!JSValueIsUndefined(context, value))
 506                 str << CYPoolCCYON(pool, context, value, *objects);
 507             else {
 508                 str << ',';
 509                 comma = false;
 510             }
 511         } catch (const CYException &error) {
 512             str << "@error";
 513         }
 514     }
 515
 516     str << ']';
 517
 518     std::string value(str.str());
 519     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 520 } CYCatch(NULL) }
 521
 522 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 523     CYPool pool;
 524     std::ostringstream str;
 525
 526     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 527     CYStringify(str, string.data, string.size);
 528
 529     std::string value(str.str());
 530     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 531 } CYCatch(NULL) }
 532
 533 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 534     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 535     return JSObjectMake(context, Pointer_, internal);
 536 }
 537
 538 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 539     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 540 }
 541
 542 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 543     cy::Functor *internal;
 544     if (*cache != NULL)
 545         internal = reinterpret_cast<cy::Functor *>(*cache);
 546     else {
 547         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 548         if (function == NULL)
 549             return NULL;
 550
 551         internal = new cy::Functor(encoding, function);
 552         *cache = internal;
 553     }
 554
 555     ++internal->count_;
 556     return JSObjectMake(context, Functor_, internal);
 557 }
 558
 559 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 560     return CYGetOffset(CYPoolCString(pool, context, value), index);
 561 }
 562
 563 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 564     switch (JSValueGetType(context, value)) {
 565         case kJSTypeNull:
 566             return NULL;
 567         case kJSTypeObject: {
 568             JSObjectRef object((JSObjectRef) value);
 569             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 570                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 571                 return internal->value_;
 572             }
 573             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 574             if (CYIsCallable(context, toPointer)) {
 575                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 576                 _assert(value != NULL);
 577                 return CYCastPointer_(context, value);
 578             }
 579         } default:
 580             double number(CYCastDouble(context, value));
 581             if (std::isnan(number))
 582                 throw CYJSError(context, "cannot convert value to pointer");
 583             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 584     }
 585 }
 586
 587 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 588     switch (type->primitive) {
 589         case sig::boolean_P:
 590             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 591         break;
 592
 593 #define CYPoolFFI_(primitive, native) \
 594         case sig::primitive ## _P: \
 595             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 596         break;
 597
 598         CYPoolFFI_(uchar, unsigned char)
 599         CYPoolFFI_(char, char)
 600         CYPoolFFI_(ushort, unsigned short)
 601         CYPoolFFI_(short, short)
 602         CYPoolFFI_(ulong, unsigned long)
 603         CYPoolFFI_(long, long)
 604         CYPoolFFI_(uint, unsigned int)
 605         CYPoolFFI_(int, int)
 606         CYPoolFFI_(ulonglong, unsigned long long)
 607         CYPoolFFI_(longlong, long long)
 608         CYPoolFFI_(float, float)
 609         CYPoolFFI_(double, double)
 610
 611         case sig::array_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.data.size; ++index) {
 615                 ffi_type *field(ffi->elements[index]);
 616
 617                 JSValueRef rhs;
 618                 if (aggregate == NULL)
 619                     rhs = value;
 620                 else {
 621                     rhs = CYGetProperty(context, aggregate, index);
 622                     if (JSValueIsUndefined(context, rhs))
 623                         throw CYJSError(context, "unable to extract array value");
 624                 }
 625
 626                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 627                 // XXX: alignment?
 628                 base += field->size;
 629             }
 630         } break;
 631
 632         case sig::pointer_P:
 633             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 634         break;
 635
 636         case sig::string_P:
 637             _assert(pool != NULL);
 638             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 639         break;
 640
 641         case sig::struct_P: {
 642             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 643             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 644             for (size_t index(0); index != type->data.signature.count; ++index) {
 645                 sig::Element *element(&type->data.signature.elements[index]);
 646                 ffi_type *field(ffi->elements[index]);
 647
 648                 JSValueRef rhs;
 649                 if (aggregate == NULL)
 650                     rhs = value;
 651                 else {
 652                     rhs = CYGetProperty(context, aggregate, index);
 653                     if (JSValueIsUndefined(context, rhs)) {
 654                         if (element->name != NULL)
 655                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 656                         else
 657                             goto undefined;
 658                         if (JSValueIsUndefined(context, rhs)) undefined:
 659                             throw CYJSError(context, "unable to extract structure value");
 660                     }
 661                 }
 662
 663                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 664                 // XXX: alignment?
 665                 base += field->size;
 666             }
 667         } break;
 668
 669         case sig::void_P:
 670         break;
 671
 672         default:
 673             if (hooks_ != NULL && hooks_->PoolFFI != NULL)
 674                 if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
 675                     return;
 676
 677             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 678     }
 679 }
 680
 681 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 682     switch (type->primitive) {
 683         case sig::boolean_P:
 684             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 685
 686 #define CYFromFFI_(primitive, native) \
 687         case sig::primitive ## _P: \
 688             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 689
 690         CYFromFFI_(uchar, unsigned char)
 691         CYFromFFI_(char, char)
 692         CYFromFFI_(ushort, unsigned short)
 693         CYFromFFI_(short, short)
 694         CYFromFFI_(ulong, unsigned long)
 695         CYFromFFI_(long, long)
 696         CYFromFFI_(uint, unsigned int)
 697         CYFromFFI_(int, int)
 698         CYFromFFI_(ulonglong, unsigned long long)
 699         CYFromFFI_(longlong, long long)
 700         CYFromFFI_(float, float)
 701         CYFromFFI_(double, double)
 702
 703         case sig::array_P:
 704             if (void *pointer = data)
 705                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 706             else goto null;
 707
 708         case sig::pointer_P:
 709             if (void *pointer = *reinterpret_cast<void **>(data))
 710                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 711             else goto null;
 712
 713         case sig::string_P:
 714             if (char *utf8 = *reinterpret_cast<char **>(data))
 715                 return CYCastJSValue(context, utf8);
 716             else goto null;
 717
 718         case sig::struct_P:
 719             return CYMakeStruct(context, data, type, ffi, owner);
 720         case sig::void_P:
 721             return CYJSUndefined(context);
 722
 723         null:
 724             return CYJSNull(context);
 725         default:
 726             if (hooks_ != NULL && hooks_->FromFFI != NULL)
 727                 if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
 728                     return value;
 729
 730             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 731     }
 732 }
 733
 734 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 735     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 736
 737     JSContextRef context(internal->context_);
 738
 739     size_t count(internal->cif_.nargs);
 740     JSValueRef values[count];
 741
 742     for (size_t index(0); index != count; ++index)
 743         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 744
 745     JSValueRef value(adapter(context, count, values, internal->function_));
 746     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 747 }
 748
 749 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 750     return CYCallAsFunction(context, function, NULL, count, values);
 751 }
 752
 753 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 754     CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
 755 }
 756
 757 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
 758     // XXX: in case of exceptions this will leak
 759     // XXX: in point of fact, this may /need/ to leak :(
 760     Closure_privateData *internal(new Closure_privateData(context, function, signature));
 761
 762 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 763     void *executable;
 764     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 765
 766     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
 767     _assert(status == FFI_OK);
 768
 769     internal->value_ = executable;
 770 #else
 771     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 772         NULL, sizeof(ffi_closure),
 773         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 774         -1, 0
 775     )));
 776
 777     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 778     _assert(status == FFI_OK);
 779
 780     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 781
 782     internal->value_ = closure;
 783 #endif
 784
 785     return internal;
 786 }
 787
 788 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 789     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
 790     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 791     // XXX: see above notes about needing to leak
 792     JSValueProtect(CYGetJSContext(context), object);
 793     return object;
 794 }
 795
 796 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 797     return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
 798 }
 799
 800 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 801     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 802
 803     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 804     if (function) {
 805         JSObjectRef function(CYCastJSObject(context, value));
 806         return CYMakeFunctor(context, function, signature);
 807     } else {
 808         void (*function)()(CYCastPointer<void (*)()>(context, value));
 809         return CYMakeFunctor(context, function, signature);
 810     }
 811 }
 812
 813 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 814     Type_privateData *typical(internal->type_);
 815     sig::Type *type(typical->type_);
 816     if (type == NULL)
 817         return false;
 818
 819     const char *name(CYPoolCString(pool, context, property));
 820     size_t length(strlen(name));
 821     double number(CYCastDouble(name, length));
 822
 823     size_t count(type->data.signature.count);
 824
 825     if (std::isnan(number)) {
 826         if (property == NULL)
 827             return false;
 828
 829         sig::Element *elements(type->data.signature.elements);
 830
 831         for (size_t local(0); local != count; ++local) {
 832             sig::Element *element(&elements[local]);
 833             if (element->name != NULL && strcmp(name, element->name) == 0) {
 834                 index = local;
 835                 goto base;
 836             }
 837         }
 838
 839         return false;
 840     } else {
 841         index = static_cast<ssize_t>(number);
 842         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 843             return false;
 844     }
 845
 846   base:
 847     ffi_type **elements(typical->GetFFI()->elements);
 848
 849     base = reinterpret_cast<uint8_t *>(internal->value_);
 850     for (ssize_t local(0); local != index; ++local)
 851         base += elements[local]->size;
 852
 853     return true;
 854 }
 855
 856 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 857     CYPool pool;
 858     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 859
 860     if (JSStringIsEqual(property, length_s))
 861         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 862
 863     Type_privateData *typical(internal->type_);
 864     if (typical->type_ == NULL)
 865         return NULL;
 866     sig::Type &type(*typical->type_);
 867
 868     ssize_t offset;
 869     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 870         offset = 0;
 871     else if (!CYGetOffset(pool, context, property, offset))
 872         return NULL;
 873
 874     if (type.primitive == sig::function_P)
 875         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 876
 877     ffi_type *ffi(typical->GetFFI());
 878
 879     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 880     base += ffi->size * offset;
 881
 882     JSObjectRef owner(internal->GetOwner() ?: object);
 883     return CYFromFFI(context, &type, ffi, base, false, owner);
 884 } CYCatch(NULL) }
 885
 886 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 887     CYPool pool;
 888     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 889     Type_privateData *typical(internal->type_);
 890
 891     if (typical->type_ == NULL)
 892         return false;
 893
 894     ssize_t offset;
 895     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 896         offset = 0;
 897     else if (!CYGetOffset(pool, context, property, offset))
 898         return false;
 899
 900     ffi_type *ffi(typical->GetFFI());
 901
 902     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 903     base += ffi->size * offset;
 904
 905     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 906     return true;
 907 } CYCatch(false) }
 908
 909 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 910     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 911     Type_privateData *typical(internal->type_);
 912     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 913 } CYCatch(NULL) }
 914
 915 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 916     CYPool pool;
 917     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 918     Type_privateData *typical(internal->type_);
 919
 920     ssize_t index;
 921     uint8_t *base;
 922
 923     if (!Index_(pool, context, internal, property, index, base))
 924         return NULL;
 925
 926     JSObjectRef owner(internal->GetOwner() ?: object);
 927
 928     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 929 } CYCatch(NULL) }
 930
 931 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 932     CYPool pool;
 933     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 934     Type_privateData *typical(internal->type_);
 935
 936     ssize_t index;
 937     uint8_t *base;
 938
 939     if (!Index_(pool, context, internal, property, index, base))
 940         return false;
 941
 942     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 943     return true;
 944 } CYCatch(false) }
 945
 946 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 947     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 948     Type_privateData *typical(internal->type_);
 949     sig::Type *type(typical->type_);
 950
 951     if (type == NULL)
 952         return;
 953
 954     size_t count(type->data.signature.count);
 955     sig::Element *elements(type->data.signature.elements);
 956
 957     char number[32];
 958
 959     for (size_t index(0); index != count; ++index) {
 960         const char *name;
 961         name = elements[index].name;
 962
 963         if (name == NULL) {
 964             sprintf(number, "%zu", index);
 965             name = number;
 966         }
 967
 968         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 969     }
 970 }
 971
 972 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)()) {
 973     if (setups + count != signature->count - 1)
 974         throw CYJSError(context, "incorrect number of arguments to ffi function");
 975
 976     size_t size(setups + count);
 977     void *values[size];
 978     memcpy(values, setup, sizeof(void *) * setups);
 979
 980     for (size_t index(setups); index != size; ++index) {
 981         sig::Element *element(&signature->elements[index + 1]);
 982         ffi_type *ffi(cif->arg_types[index]);
 983         // XXX: alignment?
 984         values[index] = new(pool) uint8_t[ffi->size];
 985         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
 986     }
 987
 988     uint8_t value[cif->rtype->size];
 989
 990     if (hooks_ != NULL && hooks_->CallFunction != NULL)
 991         (*hooks_->CallFunction)(context, cif, function, value, values);
 992     else
 993         ffi_call(cif, function, value, values);
 994
 995     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
 996 }
 997
 998 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 999     CYPool pool;
1000     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1001     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1002 } CYCatch(NULL) }
1003
1004 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
1005     Type_privateData *internal(new Type_privateData(encoding));
1006     return JSObjectMake(context, Type_privateData::Class_, internal);
1007 }
1008
1009 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1010     Type_privateData *internal(new Type_privateData(type));
1011     return JSObjectMake(context, Type_privateData::Class_, internal);
1012 }
1013
1014 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1015     CYPool pool;
1016
1017     sig::Type type;
1018     type.name = NULL;
1019     type.flags = 0;
1020
1021     type.primitive = sig::function_P;
1022     sig::Copy(pool, type.data.signature, *signature);
1023
1024     return CYMakeType(context, &type);
1025 }
1026
1027 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1028     JSObjectRef global(CYGetGlobalObject(context));
1029     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1030     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1031
1032     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1033         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1034             if (CYHasProperty(context, space, property))
1035                 return true;
1036
1037     CYPool pool;
1038     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1039
1040     size_t length(name.size);
1041     char keyed[length + 2];
1042     memcpy(keyed + 1, name.data, length + 1);
1043
1044     static const char *modes = "0124";
1045     for (size_t i(0); i != 4; ++i) {
1046         keyed[0] = modes[i];
1047         if (CYBridgeHash(keyed, length + 1) != NULL)
1048             return true;
1049     }
1050
1051     return false;
1052 }
1053
1054 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1055     JSObjectRef global(CYGetGlobalObject(context));
1056     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1057     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1058
1059     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1060         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1061             if (JSValueRef value = CYGetProperty(context, space, property))
1062                 if (!JSValueIsUndefined(context, value))
1063                     return value;
1064
1065     CYPool pool;
1066     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1067
1068     size_t length(name.size);
1069     char keyed[length + 2];
1070     memcpy(keyed + 1, name.data, length + 1);
1071
1072     static const char *modes = "0124";
1073     for (size_t i(0); i != 4; ++i) {
1074         char mode(modes[i]);
1075         keyed[0] = mode;
1076
1077         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1078             switch (mode) {
1079                 case '0':
1080                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1081
1082                 case '1':
1083                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1084
1085                 case '2':
1086                     if (void *symbol = CYCastSymbol(name.data)) {
1087                         // XXX: this is horrendously inefficient
1088                         sig::Signature signature;
1089                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1090                         ffi_cif cif;
1091                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1092                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1093                     } else return NULL;
1094
1095                 // XXX: implement case 3
1096                 case '4':
1097                     return CYMakeType(context, entry->value_);
1098             }
1099     }
1100
1101     return NULL;
1102 } CYCatch(NULL) }
1103
1104 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1105     JSObjectRef global(CYGetGlobalObject(context));
1106     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1107     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1108
1109     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1110         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1111             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1112             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1113                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1114             JSPropertyNameArrayRelease(subset);
1115         }
1116 }
1117
1118 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1119     if (count != 2)
1120         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1121
1122     CYPool pool;
1123
1124     void *value(CYCastPointer<void *>(context, arguments[0]));
1125     const char *type(CYPoolCString(pool, context, arguments[1]));
1126
1127     sig::Signature signature;
1128     sig::Parse(pool, &signature, type, &Structor_);
1129
1130     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1131 } CYCatch(NULL) }
1132
1133 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1134     if (count != 1)
1135         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1136     CYPool pool;
1137     const char *type(CYPoolCString(pool, context, arguments[0]));
1138     return CYMakeType(context, type);
1139 } CYCatch(NULL) }
1140
1141 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1142     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1143
1144     CYPool pool;
1145
1146     sig::Type type;
1147     type.name = NULL;
1148     type.flags = 0;
1149
1150     type.primitive = primitive;
1151     type.data.signature.elements = new(pool) sig::Element[1 + count];
1152     type.data.signature.count = 1 + count;
1153
1154     type.data.signature.elements[0].name = NULL;
1155     type.data.signature.elements[0].type = internal->type_;
1156     type.data.signature.elements[0].offset = _not(size_t);
1157
1158     for (size_t i(0); i != count; ++i) {
1159         sig::Element &element(type.data.signature.elements[i + 1]);
1160         element.name = NULL;
1161         element.offset = _not(size_t);
1162
1163         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1164         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1165         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1166
1167         element.type = internal->type_;
1168     }
1169
1170     return CYMakeType(context, &type);
1171 } CYCatch(NULL) }
1172
1173 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1174     if (count != 1)
1175         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1176     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1177
1178     CYPool pool;
1179     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1180     if (index == _not(size_t))
1181         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1182
1183     sig::Type type;
1184     type.name = NULL;
1185     type.flags = 0;
1186
1187     type.primitive = sig::array_P;
1188     type.data.data.type = internal->type_;
1189     type.data.data.size = index;
1190
1191     return CYMakeType(context, &type);
1192 } CYCatch(NULL) }
1193
1194 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1195     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1196 }
1197
1198 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1199     if (count != 0)
1200         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1201     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1202
1203     sig::Type type(*internal->type_);
1204     type.flags |= JOC_TYPE_CONST;
1205     return CYMakeType(context, &type);
1206 } CYCatch(NULL) }
1207
1208 static JSValueRef Type_callAsFunction_long(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1209     if (count != 0)
1210         throw CYJSError(context, "incorrect number of arguments to Type.long");
1211     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1212
1213     sig::Type type(*internal->type_);
1214
1215     switch (type.primitive) {
1216         case sig::short_P: type.primitive = sig::int_P; break;
1217         case sig::int_P: type.primitive = sig::long_P; break;
1218         case sig::long_P: type.primitive = sig::longlong_P; break;
1219         default: throw CYJSError(context, "invalid type argument to Type.long");
1220     }
1221
1222     return CYMakeType(context, &type);
1223 } CYCatch(NULL) }
1224
1225 static JSValueRef Type_callAsFunction_short(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1226     if (count != 0)
1227         throw CYJSError(context, "incorrect number of arguments to Type.short");
1228     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1229
1230     sig::Type type(*internal->type_);
1231
1232     switch (type.primitive) {
1233         case sig::int_P: type.primitive = sig::short_P; break;
1234         case sig::long_P: type.primitive = sig::int_P; break;
1235         case sig::longlong_P: type.primitive = sig::long_P; break;
1236         default: throw CYJSError(context, "invalid type argument to Type.short");
1237     }
1238
1239     return CYMakeType(context, &type);
1240 } CYCatch(NULL) }
1241
1242 static JSValueRef Type_callAsFunction_signed(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1243     if (count != 0)
1244         throw CYJSError(context, "incorrect number of arguments to Type.signed");
1245     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1246
1247     sig::Type type(*internal->type_);
1248
1249     switch (type.primitive) {
1250         case sig::char_P: case sig::uchar_P: type.primitive = sig::char_P; break;
1251         case sig::short_P: case sig::ushort_P: type.primitive = sig::short_P; break;
1252         case sig::int_P: case sig::uint_P: type.primitive = sig::int_P; break;
1253         case sig::long_P: case sig::ulong_P: type.primitive = sig::long_P; break;
1254         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::longlong_P; break;
1255         default: throw CYJSError(context, "invalid type argument to Type.signed");
1256     }
1257
1258     return CYMakeType(context, &type);
1259 } CYCatch(NULL) }
1260
1261 static JSValueRef Type_callAsFunction_unsigned(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1262     if (count != 0)
1263         throw CYJSError(context, "incorrect number of arguments to Type.unsigned");
1264     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1265
1266     sig::Type type(*internal->type_);
1267
1268     switch (type.primitive) {
1269         case sig::char_P: case sig::uchar_P: type.primitive = sig::uchar_P; break;
1270         case sig::short_P: case sig::ushort_P: type.primitive = sig::ushort_P; break;
1271         case sig::int_P: case sig::uint_P: type.primitive = sig::uint_P; break;
1272         case sig::long_P: case sig::ulong_P: type.primitive = sig::ulong_P; break;
1273         case sig::longlong_P: case sig::ulonglong_P: type.primitive = sig::ulonglong_P; break;
1274         default: throw CYJSError(context, "invalid type argument to Type.unsigned");
1275     }
1276
1277     return CYMakeType(context, &type);
1278 } CYCatch(NULL) }
1279
1280 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1281     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1282 }
1283
1284 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1285     if (count != 0)
1286         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1287     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1288
1289     sig::Type type;
1290     type.name = NULL;
1291
1292     if (internal->type_->primitive == sig::char_P) {
1293         type.flags = internal->type_->flags;
1294         type.primitive = sig::string_P;
1295         type.data.data.type = NULL;
1296         type.data.data.size = 0;
1297     } else {
1298         type.flags = 0;
1299         type.primitive = sig::pointer_P;
1300         type.data.data.type = internal->type_;
1301         type.data.data.size = 0;
1302     }
1303
1304     return CYMakeType(context, &type);
1305 } CYCatch(NULL) }
1306
1307 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1308     if (count != 1)
1309         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1310     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1311
1312     CYPool pool;
1313     const char *name(CYPoolCString(pool, context, arguments[0]));
1314
1315     sig::Type type(*internal->type_);
1316     type.name = name;
1317     return CYMakeType(context, &type);
1318 } CYCatch(NULL) }
1319
1320 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1321     if (count != 1)
1322         throw CYJSError(context, "incorrect number of arguments to type cast function");
1323     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1324
1325     if (internal->type_->primitive == sig::function_P)
1326         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1327
1328     sig::Type *type(internal->type_);
1329     ffi_type *ffi(internal->GetFFI());
1330     // XXX: alignment?
1331     uint8_t value[ffi->size];
1332     CYPool pool;
1333     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1334     return CYFromFFI(context, type, ffi, value);
1335 } CYCatch(NULL) }
1336
1337 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1338     if (count != 0)
1339         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1340     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1341
1342     sig::Type *type(internal->type_);
1343     size_t length;
1344
1345     if (type->primitive != sig::array_P)
1346         length = _not(size_t);
1347     else {
1348         length = type->data.data.size;
1349         type = type->data.data.type;
1350     }
1351
1352     void *value(calloc(1, internal->GetFFI()->size));
1353     return CYMakePointer(context, value, length, type, NULL, NULL);
1354 } CYCatch(NULL) }
1355
1356 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1357     if (count != 2)
1358         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1359     CYPool pool;
1360     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1361     sig::Signature signature;
1362     sig::Parse(pool, &signature, encoding, &Structor_);
1363     return CYMakeFunctor(context, arguments[0], signature);
1364 } CYCatch(NULL) }
1365
1366 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1367     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1368     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1369 } CYCatch(NULL) }
1370
1371 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1372     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1373 }
1374
1375 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1376     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1377     char string[32];
1378     sprintf(string, "%p", internal->value_);
1379     return CYCastJSValue(context, string);
1380 } CYCatch(NULL) }
1381
1382 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1383     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1384
1385     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1386     if (internal->length_ != _not(size_t)) {
1387         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1388         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1389         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1390     } else if (internal->type_->type_ == NULL) pointer: {
1391         char string[32];
1392         sprintf(string, "%p", internal->value_);
1393         return CYCastJSValue(context, string);
1394     } try {
1395         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1396         if (JSValueIsUndefined(context, value))
1397             goto pointer;
1398         CYPool pool;
1399         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1400     } catch (const CYException &e) {
1401         goto pointer;
1402     }
1403 } CYCatch(NULL) }
1404
1405 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1406     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1407     return CYMakeType(context, internal->type_->type_);
1408 } CYCatch(NULL) }
1409
1410 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1411     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1412     return CYMakeType(context, &internal->signature_);
1413 } CYCatch(NULL) }
1414
1415 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1416     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1417     return CYCastJSValue(context, internal->GetFFI()->alignment);
1418 } CYCatch(NULL) }
1419
1420 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1421     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1422     return CYCastJSValue(context, internal->type_->name);
1423 } CYCatch(NULL) }
1424
1425 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1426     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1427     return CYCastJSValue(context, internal->GetFFI()->size);
1428 } CYCatch(NULL) }
1429
1430 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1431     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1432     CYPool pool;
1433     const char *type(sig::Unparse(pool, internal->type_));
1434     return CYCastJSValue(context, CYJSString(type));
1435 } CYCatch(NULL) }
1436
1437 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1438     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1439     CYLocalPool pool;
1440     std::ostringstream out;
1441     CYOptions options;
1442     CYOutput output(out, options);
1443     (new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1444     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1445 } CYCatch(NULL) }
1446
1447 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1448     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1449 }
1450
1451 static JSStaticFunction Pointer_staticFunctions[4] = {
1452     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1453     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1454     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1455     {NULL, NULL, 0}
1456 };
1457
1458 static JSStaticValue Pointer_staticValues[2] = {
1459     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1460     {NULL, NULL, NULL, 0}
1461 };
1462
1463 static JSStaticFunction Struct_staticFunctions[2] = {
1464     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1465     {NULL, NULL, 0}
1466 };
1467
1468 static JSStaticFunction Functor_staticFunctions[4] = {
1469     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1470     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1471     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1472     {NULL, NULL, 0}
1473 };
1474
1475 namespace cy {
1476     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1477 }
1478
1479 static JSStaticValue Functor_staticValues[2] = {
1480     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1481     {NULL, NULL, NULL, 0}
1482 };
1483
1484 namespace cy {
1485     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1486 }
1487
1488 static JSStaticValue Type_staticValues[4] = {
1489     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1490     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1491     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1492     {NULL, NULL, NULL, 0}
1493 };
1494
1495 static JSStaticFunction Type_staticFunctions[14] = {
1496     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1497     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1498     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1499     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1500     {"long", &Type_callAsFunction_long, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1501     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1502     {"short", &Type_callAsFunction_short, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1503     {"signed", &Type_callAsFunction_signed, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1504     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1505     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1506     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1507     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1508     {"unsigned", &Type_callAsFunction_unsigned, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1509     {NULL, NULL, 0}
1510 };
1511
1512 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1513
1514 void CYSetArgs(int argc, const char *argv[]) {
1515     JSContextRef context(CYGetJSContext());
1516     JSValueRef args[argc];
1517     for (int i(0); i != argc; ++i)
1518         args[i] = CYCastJSValue(context, argv[i]);
1519
1520     JSObjectRef array;
1521     if (JSObjectMakeArray$ != NULL)
1522         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1523     else {
1524         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1525         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1526         array = CYCastJSObject(context, value);
1527     }
1528
1529     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1530     CYSetProperty(context, System, CYJSString("args"), array);
1531 }
1532
1533 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1534     return JSContextGetGlobalObject(context);
1535 }
1536
1537 class ExecutionHandle {
1538   private:
1539     JSContextRef context_;
1540     void *handle_;
1541
1542   public:
1543     ExecutionHandle(JSContextRef context) :
1544         context_(context)
1545     {
1546         if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
1547             handle_ = (*hooks_->ExecuteStart)(context_);
1548         else
1549             handle_ = NULL;
1550     }
1551
1552     ~ExecutionHandle() {
1553         if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
1554             (*hooks_->ExecuteEnd)(context_, handle_);
1555     }
1556 };
1557
1558 const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1559     JSValueRef exception(NULL);
1560
1561     ExecutionHandle handle(context);
1562
1563     JSValueRef result; try {
1564         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1565     } catch (const char *error) {
1566         return error;
1567     }
1568
1569     if (exception != NULL) error:
1570         return CYPoolCString(pool, context, CYJSString(context, exception));
1571
1572     if (JSValueIsUndefined(context, result))
1573         return NULL;
1574
1575     const char *json; try {
1576         std::set<void *> objects;
1577         json = CYPoolCCYON(pool, context, result, objects, &exception);
1578     } catch (const char *error) {
1579         return error;
1580     }
1581
1582     if (exception != NULL)
1583         goto error;
1584
1585     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1586
1587     return json;
1588 }
1589
1590 static bool initialized_ = false;
1591
1592 void CYInitializeDynamic() {
1593     if (!initialized_)
1594         initialized_ = true;
1595     else return;
1596
1597     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1598     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1599
1600     JSClassDefinition definition;
1601
1602     definition = kJSClassDefinitionEmpty;
1603     definition.className = "All";
1604     definition.hasProperty = &All_hasProperty;
1605     definition.getProperty = &All_getProperty;
1606     definition.getPropertyNames = &All_getPropertyNames;
1607     All_ = JSClassCreate(&definition);
1608
1609     definition = kJSClassDefinitionEmpty;
1610     definition.className = "Context";
1611     definition.finalize = &CYFinalize;
1612     Context_ = JSClassCreate(&definition);
1613
1614     definition = kJSClassDefinitionEmpty;
1615     definition.className = "Functor";
1616     definition.staticFunctions = cy::Functor::StaticFunctions;
1617     definition.staticValues = Functor_staticValues;
1618     definition.callAsFunction = &Functor_callAsFunction;
1619     definition.finalize = &CYFinalize;
1620     Functor_ = JSClassCreate(&definition);
1621
1622     definition = kJSClassDefinitionEmpty;
1623     definition.className = "Pointer";
1624     definition.staticFunctions = Pointer_staticFunctions;
1625     definition.staticValues = Pointer_staticValues;
1626     definition.getProperty = &Pointer_getProperty;
1627     definition.setProperty = &Pointer_setProperty;
1628     definition.finalize = &CYFinalize;
1629     Pointer_ = JSClassCreate(&definition);
1630
1631     definition = kJSClassDefinitionEmpty;
1632     definition.className = "Struct";
1633     definition.staticFunctions = Struct_staticFunctions;
1634     definition.getProperty = &Struct_getProperty;
1635     definition.setProperty = &Struct_setProperty;
1636     definition.getPropertyNames = &Struct_getPropertyNames;
1637     definition.finalize = &CYFinalize;
1638     Struct_ = JSClassCreate(&definition);
1639
1640     definition = kJSClassDefinitionEmpty;
1641     definition.className = "Type";
1642     definition.staticValues = Type_staticValues;
1643     definition.staticFunctions = Type_staticFunctions;
1644     definition.callAsFunction = &Type_callAsFunction;
1645     definition.callAsConstructor = &Type_callAsConstructor;
1646     definition.finalize = &CYFinalize;
1647     Type_privateData::Class_ = JSClassCreate(&definition);
1648
1649     definition = kJSClassDefinitionEmpty;
1650     definition.className = "Global";
1651     //definition.getProperty = &Global_getProperty;
1652     Global_ = JSClassCreate(&definition);
1653
1654     Array_s = JSStringCreateWithUTF8CString("Array");
1655     cy_s = JSStringCreateWithUTF8CString("$cy");
1656     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1657     length_s = JSStringCreateWithUTF8CString("length");
1658     message_s = JSStringCreateWithUTF8CString("message");
1659     name_s = JSStringCreateWithUTF8CString("name");
1660     pop_s = JSStringCreateWithUTF8CString("pop");
1661     prototype_s = JSStringCreateWithUTF8CString("prototype");
1662     push_s = JSStringCreateWithUTF8CString("push");
1663     splice_s = JSStringCreateWithUTF8CString("splice");
1664     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1665     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1666     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1667     toString_s = JSStringCreateWithUTF8CString("toString");
1668
1669     Result_ = JSStringCreateWithUTF8CString("_");
1670
1671     if (hooks_ != NULL && hooks_->Initialize != NULL)
1672         (*hooks_->Initialize)();
1673 }
1674
1675 void CYThrow(JSContextRef context, JSValueRef value) {
1676     if (value != NULL)
1677         throw CYJSError(context, value);
1678 }
1679
1680 const char *CYJSError::PoolCString(CYPool &pool) const {
1681     std::set<void *> objects;
1682     // XXX: this used to be CYPoolCString
1683     return CYPoolCCYON(pool, context_, value_, objects);
1684 }
1685
1686 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1687     // XXX: what if the context is different?
1688     return value_;
1689 }
1690
1691 JSValueRef CYCastJSError(JSContextRef context, const char *message) {
1692     JSObjectRef Error(CYGetCachedObject(context, CYJSString("Error")));
1693     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1694     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1695 }
1696
1697 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1698     return CYCastJSError(context, message_);
1699 }
1700
1701 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1702     _assert(context != NULL);
1703
1704     CYPool pool;
1705
1706     va_list args;
1707     va_start(args, format);
1708     // XXX: there might be a beter way to think about this
1709     const char *message(pool.vsprintf(64, format, args));
1710     va_end(args);
1711
1712     value_ = CYCastJSError(context, message);
1713 }
1714
1715 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1716     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1717 }
1718
1719 extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
1720
1721 void *CYMapFile(const char *path, size_t *psize) {
1722     int fd(_syscall_(open(path, O_RDONLY), 1, {ENOENT}));
1723     if (fd == -1)
1724         return NULL;
1725
1726     struct stat stat;
1727     _syscall(fstat(fd, &stat));
1728     size_t size(stat.st_size);
1729
1730     *psize = size;
1731
1732     void *base;
1733     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1734
1735     _syscall(close(fd));
1736     return base;
1737 }
1738
1739 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1740     _assert(count == 1);
1741     CYPool pool;
1742
1743     Dl_info addr;
1744     _assert(dladdr(reinterpret_cast<void *>(&require), &addr) != 0);
1745     char *lib(pool.strdup(addr.dli_fname));
1746
1747     char *slash(strrchr(lib, '/'));
1748     _assert(slash != NULL);
1749     *slash = '\0';
1750
1751     CYJSString property("exports");
1752     JSObjectRef module;
1753
1754     const char *name(CYPoolCString(pool, context, arguments[0]));
1755     const char *path(pool.strcat(lib, "/cycript0.9/", name, ".cy", NULL));
1756
1757     CYJSString key(path);
1758     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1759     JSValueRef cache(CYGetProperty(context, modules, key));
1760
1761     if (!JSValueIsUndefined(context, cache))
1762         module = CYCastJSObject(context, cache);
1763     else {
1764         CYUTF8String code;
1765         code.data = reinterpret_cast<char *>(CYMapFile(path, &code.size));
1766
1767         if (code.data == NULL) {
1768             if (strchr(name, '/') == NULL && (
1769                 dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1770                 dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
1771             false))
1772                 return CYJSUndefined(NULL);
1773
1774             CYThrow("Can't find module: %s", name);
1775         }
1776
1777         module = JSObjectMake(context, NULL, NULL);
1778         CYSetProperty(context, modules, key, module);
1779
1780         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1781         CYSetProperty(context, module, property, exports);
1782
1783         std::stringstream wrap;
1784         wrap << "(function (exports, require, module) { " << code << "\n});";
1785         code = CYPoolCode(pool, wrap);
1786
1787         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1788         JSObjectRef function(CYCastJSObject(context, value));
1789
1790         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1791         CYCallAsFunction(context, function, NULL, 3, arguments);
1792     }
1793
1794     return CYGetProperty(context, module, property);
1795 } CYCatch(NULL) }
1796
1797 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1798     CYInitializeDynamic();
1799
1800     JSObjectRef global(CYGetGlobalObject(context));
1801
1802     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1803     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1804
1805 /* Cache Globals {{{ */
1806     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1807     CYSetProperty(context, cy, CYJSString("Array"), Array);
1808
1809     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1810     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1811
1812     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
1813     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
1814
1815     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
1816     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
1817
1818     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1819     CYSetProperty(context, cy, CYJSString("Error"), Error);
1820
1821     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1822     CYSetProperty(context, cy, CYJSString("Function"), Function);
1823
1824     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1825     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1826
1827     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
1828     CYSetProperty(context, cy, CYJSString("Number"), Number);
1829
1830     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
1831     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
1832
1833     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1834     CYSetProperty(context, cy, CYJSString("Object"), Object);
1835
1836     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1837     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1838
1839     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1840     CYSetProperty(context, cy, CYJSString("String"), String);
1841
1842     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1843     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1844 /* }}} */
1845
1846     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1847     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1848
1849     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1850     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1851     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1852
1853     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1854     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1855     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1856
1857     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1858     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1859
1860     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1861     CYSetProperty(context, cy, CYJSString("modules"), modules);
1862
1863     JSObjectRef all(JSObjectMake(context, All_, NULL));
1864     CYSetProperty(context, cycript, CYJSString("all"), all);
1865
1866     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1867     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1868
1869     if (true) {
1870         JSObjectRef last(NULL), curr(global);
1871
1872         goto next; for (JSValueRef next;;) {
1873             if (JSValueIsNull(context, next))
1874                 break;
1875             last = curr;
1876             curr = CYCastJSObject(context, next);
1877           next:
1878             next = JSObjectGetPrototype(context, curr);
1879         }
1880
1881         CYSetPrototype(context, last, all);
1882     }
1883
1884     CYSetProperty(context, global, CYJSString("$cyq"), &$cyq, kJSPropertyAttributeDontEnum);
1885
1886     JSObjectRef System(JSObjectMake(context, NULL, NULL));
1887     CYSetProperty(context, cy, CYJSString("System"), System);
1888
1889     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
1890
1891     CYSetProperty(context, global, CYJSString("system"), System);
1892     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
1893     //CYSetProperty(context, System, CYJSString("global"), global);
1894     CYSetProperty(context, System, CYJSString("print"), &System_print);
1895
1896     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
1897         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
1898
1899     if (hooks_ != NULL && hooks_->SetupContext != NULL)
1900         (*hooks_->SetupContext)(context);
1901
1902     CYArrayPush(context, alls, cycript);
1903 }
1904
1905 static JSGlobalContextRef context_;
1906
1907 JSGlobalContextRef CYGetJSContext() {
1908     CYInitializeDynamic();
1909
1910     if (context_ == NULL) {
1911         context_ = JSGlobalContextCreate(Global_);
1912         CYSetupContext(context_);
1913     }
1914
1915     return context_;
1916 }
1917
1918 void CYDestroyContext() {
1919     if (context_ == NULL)
1920         return;
1921     JSGlobalContextRelease(context_);
1922     context_ = NULL;
1923 }