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