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 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  58     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  59 }
  60
  61 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  62     return _jsccall(JSObjectGetProperty, context, object, name);
  63 }
  64
  65 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  66     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  67 }
  68
  69 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  70     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  71 }
  72
  73 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  74     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  75 }
  76 /* }}} */
  77 /* JavaScript Strings {{{ */
  78 JSStringRef CYCopyJSString(const char *value) {
  79     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
  80 }
  81
  82 JSStringRef CYCopyJSString(JSStringRef value) {
  83     return value == NULL ? NULL : JSStringRetain(value);
  84 }
  85
  86 JSStringRef CYCopyJSString(CYUTF8String value) {
  87     // XXX: this is very wrong; it needs to convert to UTF16 and then create from there
  88     return CYCopyJSString(value.data);
  89 }
  90
  91 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
  92     if (JSValueIsNull(context, value))
  93         return NULL;
  94     return _jsccall(JSValueToStringCopy, context, value);
  95 }
  96
  97 static CYUTF16String CYCastUTF16String(JSStringRef value) {
  98     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
  99 }
 100
 101 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 102     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 103 }
 104
 105 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 106     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 107     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 108     return utf8.data;
 109 }
 110
 111 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 112     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 113 }
 114 /* }}} */
 115 /* Index Offsets {{{ */
 116 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 117     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 118 }
 119 /* }}} */
 120
 121 static JSClassRef All_;
 122 static JSClassRef Context_;
 123 JSClassRef Functor_;
 124 static JSClassRef Global_;
 125 static JSClassRef Pointer_;
 126 static JSClassRef Struct_;
 127
 128 JSStringRef Array_s;
 129 JSStringRef cy_s;
 130 JSStringRef cyi_s;
 131 JSStringRef length_s;
 132 JSStringRef message_s;
 133 JSStringRef name_s;
 134 JSStringRef pop_s;
 135 JSStringRef prototype_s;
 136 JSStringRef push_s;
 137 JSStringRef splice_s;
 138 JSStringRef toCYON_s;
 139 JSStringRef toJSON_s;
 140 JSStringRef toPointer_s;
 141 JSStringRef toString_s;
 142
 143 static JSStringRef Result_;
 144
 145 void CYFinalize(JSObjectRef object) {
 146     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 147     _assert(internal->count_ != _not(unsigned));
 148     if (--internal->count_ == 0)
 149         delete internal;
 150 }
 151
 152 void Structor_(CYPool &pool, sig::Type *&type) {
 153     if (
 154         type->primitive == sig::pointer_P &&
 155         type->data.data.type != NULL &&
 156         type->data.data.type->primitive == sig::struct_P &&
 157         type->data.data.type->name != NULL &&
 158         strcmp(type->data.data.type->name, "_objc_class") == 0
 159     ) {
 160         type->primitive = sig::typename_P;
 161         type->data.data.type = NULL;
 162         return;
 163     }
 164
 165     if (type->primitive != sig::struct_P || type->name == NULL)
 166         return;
 167
 168     size_t length(strlen(type->name));
 169     char keyed[length + 2];
 170     memcpy(keyed + 1, type->name, length + 1);
 171
 172     static const char *modes = "34";
 173     for (size_t i(0); i != 2; ++i) {
 174         char mode(modes[i]);
 175         keyed[0] = mode;
 176
 177         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
 178             switch (mode) {
 179                 case '3':
 180                     sig::Parse(pool, &type->data.signature, entry->value_, &Structor_);
 181                 break;
 182
 183                 case '4': {
 184                     sig::Signature signature;
 185                     sig::Parse(pool, &signature, entry->value_, &Structor_);
 186                     type = signature.elements[0].type;
 187                 } break;
 188             }
 189     }
 190 }
 191
 192 JSClassRef Type_privateData::Class_;
 193
 194 struct Context :
 195     CYData
 196 {
 197     JSGlobalContextRef context_;
 198
 199     Context(JSGlobalContextRef context) :
 200         context_(context)
 201     {
 202     }
 203 };
 204
 205 struct Pointer :
 206     CYOwned
 207 {
 208     Type_privateData *type_;
 209     size_t length_;
 210
 211     Pointer(void *value, JSContextRef context, JSObjectRef owner, size_t length, sig::Type *type) :
 212         CYOwned(value, context, owner),
 213         type_(new(*pool_) Type_privateData(type)),
 214         length_(length)
 215     {
 216     }
 217 };
 218
 219 struct Struct_privateData :
 220     CYOwned
 221 {
 222     Type_privateData *type_;
 223
 224     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 225         CYOwned(NULL, context, owner)
 226     {
 227     }
 228 };
 229
 230 typedef std::map<const char *, Type_privateData *, CYCStringLess> TypeMap;
 231 static TypeMap Types_;
 232
 233 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 234     Struct_privateData *internal(new Struct_privateData(context, owner));
 235     CYPool &pool(*internal->pool_);
 236     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 237     internal->type_ = typical;
 238
 239     if (owner != NULL)
 240         internal->value_ = data;
 241     else {
 242         size_t size(typical->GetFFI()->size);
 243         void *copy(internal->pool_->malloc<void>(size));
 244         memcpy(copy, data, size);
 245         internal->value_ = copy;
 246     }
 247
 248     return JSObjectMake(context, Struct_, internal);
 249 }
 250
 251 static void *CYCastSymbol(const char *name) {
 252     return dlsym(RTLD_DEFAULT, name);
 253 }
 254
 255 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 256     return JSValueMakeBoolean(context, value);
 257 }
 258
 259 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 260     return JSValueMakeNumber(context, value);
 261 }
 262
 263 #define CYCastJSValue_(Type_) \
 264     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 265         return JSValueMakeNumber(context, static_cast<double>(value)); \
 266     }
 267
 268 CYCastJSValue_(int)
 269 CYCastJSValue_(unsigned int)
 270 CYCastJSValue_(long int)
 271 CYCastJSValue_(long unsigned int)
 272 CYCastJSValue_(long long int)
 273 CYCastJSValue_(long long unsigned int)
 274
 275 JSValueRef CYJSUndefined(JSContextRef context) {
 276     return JSValueMakeUndefined(context);
 277 }
 278
 279 double CYCastDouble(JSContextRef context, JSValueRef value) {
 280     return _jsccall(JSValueToNumber, context, value);
 281 }
 282
 283 bool CYCastBool(JSContextRef context, JSValueRef value) {
 284     return JSValueToBoolean(context, value);
 285 }
 286
 287 JSValueRef CYJSNull(JSContextRef context) {
 288     return JSValueMakeNull(context);
 289 }
 290
 291 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 292     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 293 }
 294
 295 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 296     return CYCastJSValue(context, CYJSString(value));
 297 }
 298
 299 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 300     return _jsccall(JSValueToObject, context, value);
 301 }
 302
 303 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 304     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 305 }
 306
 307 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 308     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 309 }
 310
 311 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 312     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 313 }
 314
 315 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 316     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 317 }
 318
 319 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 320     JSValueRef arguments[1];
 321     arguments[0] = value;
 322     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 323     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, 1, arguments);
 324 }
 325
 326 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 327     if (count == 0)
 328         printf("\n");
 329     else {
 330         CYPool pool;
 331         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 332     }
 333
 334     return CYJSUndefined(context);
 335 } CYCatch(NULL) }
 336
 337 static size_t Nonce_(0);
 338
 339 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 340     CYPool pool;
 341     const char *name(pool.strcat(CYPoolCString(pool, context, arguments[0]), pool.itoa(Nonce_++), NULL));
 342     return CYCastJSValue(context, name);
 343 } CYCatch(NULL) }
 344
 345 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 346
 347 void CYGarbageCollect(JSContextRef context) {
 348     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 349 }
 350
 351 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 352     CYGarbageCollect(context);
 353     return CYJSUndefined(context);
 354 } CYCatch(NULL) }
 355
 356 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, JSValueRef *exception) { CYTry {
 357     switch (JSType type = JSValueGetType(context, value)) {
 358         case kJSTypeUndefined:
 359             return "undefined";
 360         case kJSTypeNull:
 361             return "null";
 362         case kJSTypeBoolean:
 363             return CYCastBool(context, value) ? "true" : "false";
 364
 365         case kJSTypeNumber: {
 366             std::ostringstream str;
 367             CYNumerify(str, CYCastDouble(context, value));
 368             std::string value(str.str());
 369             return pool.strmemdup(value.c_str(), value.size());
 370         } break;
 371
 372         case kJSTypeString: {
 373             std::ostringstream str;
 374             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 375             CYStringify(str, string.data, string.size);
 376             std::string value(str.str());
 377             return pool.strmemdup(value.c_str(), value.size());
 378         } break;
 379
 380         case kJSTypeObject:
 381             return CYPoolCCYON(pool, context, (JSObjectRef) value);
 382         default:
 383             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 384     }
 385 } CYCatch(NULL) }
 386
 387 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value) {
 388     return _jsccall(CYPoolCCYON, pool, context, value);
 389 }
 390
 391 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object) {
 392     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 393     if (CYIsCallable(context, toCYON)) {
 394         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 0, NULL));
 395         _assert(value != NULL);
 396         return CYPoolCString(pool, context, value);
 397     }
 398
 399     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 400     if (CYIsCallable(context, toJSON)) {
 401         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 402         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments));
 403     }
 404
 405     if (JSObjectIsFunction(context, object)) {
 406         JSValueRef toString(CYGetProperty(context, object, toString_s));
 407         if (CYIsCallable(context, toString)) {
 408             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 409             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 410             _assert(value != NULL);
 411             return CYPoolCString(pool, context, value);
 412         }
 413     }
 414
 415     std::ostringstream str;
 416
 417     str << '{';
 418
 419     // XXX: this is, sadly, going to leak
 420     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 421
 422     bool comma(false);
 423
 424     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 425         if (comma)
 426             str << ',';
 427         else
 428             comma = true;
 429
 430         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 431         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 432
 433         if (CYIsKey(string))
 434             str << string.data;
 435         else
 436             CYStringify(str, string.data, string.size);
 437
 438         str << ':';
 439
 440         try {
 441             JSValueRef value(CYGetProperty(context, object, name));
 442             str << CYPoolCCYON(pool, context, value);
 443         } catch (const CYException &error) {
 444             str << "@error";
 445         }
 446     }
 447
 448     JSPropertyNameArrayRelease(names);
 449
 450     str << '}';
 451
 452     std::string string(str.str());
 453     return pool.strmemdup(string.c_str(), string.size());
 454 }
 455
 456 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 457     CYPool pool;
 458     std::ostringstream str;
 459
 460     str << '[';
 461
 462     JSValueRef length(CYGetProperty(context, _this, length_s));
 463     bool comma(false);
 464
 465     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 466         if (comma)
 467             str << ',';
 468         else
 469             comma = true;
 470
 471         try {
 472             JSValueRef value(CYGetProperty(context, _this, index));
 473             if (!JSValueIsUndefined(context, value))
 474                 str << CYPoolCCYON(pool, context, value);
 475             else {
 476                 str << ',';
 477                 comma = false;
 478             }
 479         } catch (const CYException &error) {
 480             str << "@error";
 481         }
 482     }
 483
 484     str << ']';
 485
 486     std::string value(str.str());
 487     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 488 } CYCatch(NULL) }
 489
 490 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 491     CYPool pool;
 492     std::ostringstream str;
 493
 494     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 495     CYStringify(str, string.data, string.size);
 496
 497     std::string value(str.str());
 498     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 499 } CYCatch(NULL) }
 500
 501 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, size_t length, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 502     Pointer *internal(new Pointer(pointer, context, owner, length, type));
 503     return JSObjectMake(context, Pointer_, internal);
 504 }
 505
 506 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 507     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 508 }
 509
 510 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding, void **cache) {
 511     cy::Functor *internal;
 512     if (*cache != NULL)
 513         internal = reinterpret_cast<cy::Functor *>(*cache);
 514     else {
 515         void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 516         if (function == NULL)
 517             return NULL;
 518
 519         internal = new cy::Functor(encoding, function);
 520         *cache = internal;
 521     }
 522
 523     ++internal->count_;
 524     return JSObjectMake(context, Functor_, internal);
 525 }
 526
 527 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 528     return CYGetOffset(CYPoolCString(pool, context, value), index);
 529 }
 530
 531 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 532     switch (JSValueGetType(context, value)) {
 533         case kJSTypeNull:
 534             return NULL;
 535         case kJSTypeObject: {
 536             JSObjectRef object((JSObjectRef) value);
 537             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 538                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 539                 return internal->value_;
 540             }
 541             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 542             if (CYIsCallable(context, toPointer)) {
 543                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 544                 _assert(value != NULL);
 545                 return CYCastPointer_(context, value);
 546             }
 547         } default:
 548             double number(CYCastDouble(context, value));
 549             if (std::isnan(number))
 550                 throw CYJSError(context, "cannot convert value to pointer");
 551             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 552     }
 553 }
 554
 555 void CYPoolFFI(CYPool *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 556     switch (type->primitive) {
 557         case sig::boolean_P:
 558             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 559         break;
 560
 561 #define CYPoolFFI_(primitive, native) \
 562         case sig::primitive ## _P: \
 563             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 564         break;
 565
 566         CYPoolFFI_(uchar, unsigned char)
 567         CYPoolFFI_(char, char)
 568         CYPoolFFI_(ushort, unsigned short)
 569         CYPoolFFI_(short, short)
 570         CYPoolFFI_(ulong, unsigned long)
 571         CYPoolFFI_(long, long)
 572         CYPoolFFI_(uint, unsigned int)
 573         CYPoolFFI_(int, int)
 574         CYPoolFFI_(ulonglong, unsigned long long)
 575         CYPoolFFI_(longlong, long long)
 576         CYPoolFFI_(float, float)
 577         CYPoolFFI_(double, double)
 578
 579         case sig::array_P: {
 580             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 581             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 582             for (size_t index(0); index != type->data.data.size; ++index) {
 583                 ffi_type *field(ffi->elements[index]);
 584
 585                 JSValueRef rhs;
 586                 if (aggregate == NULL)
 587                     rhs = value;
 588                 else {
 589                     rhs = CYGetProperty(context, aggregate, index);
 590                     if (JSValueIsUndefined(context, rhs))
 591                         throw CYJSError(context, "unable to extract array value");
 592                 }
 593
 594                 CYPoolFFI(pool, context, type->data.data.type, field, base, rhs);
 595                 // XXX: alignment?
 596                 base += field->size;
 597             }
 598         } break;
 599
 600         case sig::pointer_P:
 601             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 602         break;
 603
 604         case sig::string_P:
 605             _assert(pool != NULL);
 606             *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 607         break;
 608
 609         case sig::struct_P: {
 610             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 611             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 612             for (size_t index(0); index != type->data.signature.count; ++index) {
 613                 sig::Element *element(&type->data.signature.elements[index]);
 614                 ffi_type *field(ffi->elements[index]);
 615
 616                 JSValueRef rhs;
 617                 if (aggregate == NULL)
 618                     rhs = value;
 619                 else {
 620                     rhs = CYGetProperty(context, aggregate, index);
 621                     if (JSValueIsUndefined(context, rhs)) {
 622                         if (element->name != NULL)
 623                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 624                         else
 625                             goto undefined;
 626                         if (JSValueIsUndefined(context, rhs)) undefined:
 627                             throw CYJSError(context, "unable to extract structure value");
 628                     }
 629                 }
 630
 631                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 632                 // XXX: alignment?
 633                 base += field->size;
 634             }
 635         } break;
 636
 637         case sig::void_P:
 638         break;
 639
 640         default:
 641             if (hooks_ != NULL && hooks_->PoolFFI != NULL)
 642                 if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
 643                     return;
 644
 645             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 646     }
 647 }
 648
 649 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 650     switch (type->primitive) {
 651         case sig::boolean_P:
 652             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 653
 654 #define CYFromFFI_(primitive, native) \
 655         case sig::primitive ## _P: \
 656             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 657
 658         CYFromFFI_(uchar, unsigned char)
 659         CYFromFFI_(char, char)
 660         CYFromFFI_(ushort, unsigned short)
 661         CYFromFFI_(short, short)
 662         CYFromFFI_(ulong, unsigned long)
 663         CYFromFFI_(long, long)
 664         CYFromFFI_(uint, unsigned int)
 665         CYFromFFI_(int, int)
 666         CYFromFFI_(ulonglong, unsigned long long)
 667         CYFromFFI_(longlong, long long)
 668         CYFromFFI_(float, float)
 669         CYFromFFI_(double, double)
 670
 671         case sig::array_P:
 672             if (void *pointer = data)
 673                 return CYMakePointer(context, pointer, type->data.data.size, type->data.data.type, NULL, owner);
 674             else goto null;
 675
 676         case sig::pointer_P:
 677             if (void *pointer = *reinterpret_cast<void **>(data))
 678                 return CYMakePointer(context, pointer, _not(size_t), type->data.data.type, NULL, owner);
 679             else goto null;
 680
 681         case sig::string_P:
 682             if (char *utf8 = *reinterpret_cast<char **>(data))
 683                 return CYCastJSValue(context, utf8);
 684             else goto null;
 685
 686         case sig::struct_P:
 687             return CYMakeStruct(context, data, type, ffi, owner);
 688         case sig::void_P:
 689             return CYJSUndefined(context);
 690
 691         null:
 692             return CYJSNull(context);
 693         default:
 694             if (hooks_ != NULL && hooks_->FromFFI != NULL)
 695                 if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
 696                     return value;
 697
 698             CYThrow("unimplemented signature code: '%c''\n", type->primitive);
 699     }
 700 }
 701
 702 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 703     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 704
 705     JSContextRef context(internal->context_);
 706
 707     size_t count(internal->cif_.nargs);
 708     JSValueRef values[count];
 709
 710     for (size_t index(0); index != count; ++index)
 711         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 712
 713     JSValueRef value(adapter(context, count, values, internal->function_));
 714     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 715 }
 716
 717 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 718     return CYCallAsFunction(context, function, NULL, count, values);
 719 }
 720
 721 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 722     CYExecuteClosure(cif, result, arguments, arg, &FunctionAdapter_);
 723 }
 724
 725 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, void (*callback)(ffi_cif *, void *, void **, void *)) {
 726     // XXX: in case of exceptions this will leak
 727     // XXX: in point of fact, this may /need/ to leak :(
 728     Closure_privateData *internal(new Closure_privateData(context, function, signature));
 729
 730 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 731     void *executable;
 732     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 733
 734     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, callback, internal, executable));
 735     _assert(status == FFI_OK);
 736
 737     internal->value_ = executable;
 738 #else
 739     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 740         NULL, sizeof(ffi_closure),
 741         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 742         -1, 0
 743     )));
 744
 745     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 746     _assert(status == FFI_OK);
 747
 748     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 749
 750     internal->value_ = closure;
 751 #endif
 752
 753     return internal;
 754 }
 755
 756 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 757     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionClosure_));
 758     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 759     // XXX: see above notes about needing to leak
 760     JSValueProtect(CYGetJSContext(context), object);
 761     return object;
 762 }
 763
 764 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 765     return CYCastJSObject(context, CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name));
 766 }
 767
 768 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 769     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 770
 771     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 772     if (function) {
 773         JSObjectRef function(CYCastJSObject(context, value));
 774         return CYMakeFunctor(context, function, signature);
 775     } else {
 776         void (*function)()(CYCastPointer<void (*)()>(context, value));
 777         return CYMakeFunctor(context, function, signature);
 778     }
 779 }
 780
 781 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 782     Type_privateData *typical(internal->type_);
 783     sig::Type *type(typical->type_);
 784     if (type == NULL)
 785         return false;
 786
 787     const char *name(CYPoolCString(pool, context, property));
 788     size_t length(strlen(name));
 789     double number(CYCastDouble(name, length));
 790
 791     size_t count(type->data.signature.count);
 792
 793     if (std::isnan(number)) {
 794         if (property == NULL)
 795             return false;
 796
 797         sig::Element *elements(type->data.signature.elements);
 798
 799         for (size_t local(0); local != count; ++local) {
 800             sig::Element *element(&elements[local]);
 801             if (element->name != NULL && strcmp(name, element->name) == 0) {
 802                 index = local;
 803                 goto base;
 804             }
 805         }
 806
 807         return false;
 808     } else {
 809         index = static_cast<ssize_t>(number);
 810         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 811             return false;
 812     }
 813
 814   base:
 815     ffi_type **elements(typical->GetFFI()->elements);
 816
 817     base = reinterpret_cast<uint8_t *>(internal->value_);
 818     for (ssize_t local(0); local != index; ++local)
 819         base += elements[local]->size;
 820
 821     return true;
 822 }
 823
 824 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 825     CYPool pool;
 826     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 827
 828     if (JSStringIsEqual(property, length_s))
 829         return internal->length_ == _not(size_t) ? CYJSUndefined(context) : CYCastJSValue(context, internal->length_);
 830
 831     Type_privateData *typical(internal->type_);
 832     if (typical->type_ == NULL)
 833         return NULL;
 834     sig::Type &type(*typical->type_);
 835
 836     ssize_t offset;
 837     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 838         offset = 0;
 839     else if (!CYGetOffset(pool, context, property, offset))
 840         return NULL;
 841
 842     if (type.primitive == sig::function_P)
 843         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), type.data.signature);
 844
 845     ffi_type *ffi(typical->GetFFI());
 846
 847     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 848     base += ffi->size * offset;
 849
 850     JSObjectRef owner(internal->GetOwner() ?: object);
 851     return CYFromFFI(context, &type, ffi, base, false, owner);
 852 } CYCatch(NULL) }
 853
 854 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 855     CYPool pool;
 856     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 857     Type_privateData *typical(internal->type_);
 858
 859     if (typical->type_ == NULL)
 860         return false;
 861
 862     ssize_t offset;
 863     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
 864         offset = 0;
 865     else if (!CYGetOffset(pool, context, property, offset))
 866         return false;
 867
 868     ffi_type *ffi(typical->GetFFI());
 869
 870     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 871     base += ffi->size * offset;
 872
 873     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 874     return true;
 875 } CYCatch(false) }
 876
 877 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 878     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 879     Type_privateData *typical(internal->type_);
 880     return CYMakePointer(context, internal->value_, _not(size_t), typical->type_, typical->ffi_, _this);
 881 } CYCatch(NULL) }
 882
 883 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 884     CYPool pool;
 885     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 886     Type_privateData *typical(internal->type_);
 887
 888     ssize_t index;
 889     uint8_t *base;
 890
 891     if (!Index_(pool, context, internal, property, index, base))
 892         return NULL;
 893
 894     JSObjectRef owner(internal->GetOwner() ?: object);
 895
 896     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 897 } CYCatch(NULL) }
 898
 899 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 900     CYPool pool;
 901     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 902     Type_privateData *typical(internal->type_);
 903
 904     ssize_t index;
 905     uint8_t *base;
 906
 907     if (!Index_(pool, context, internal, property, index, base))
 908         return false;
 909
 910     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
 911     return true;
 912 } CYCatch(false) }
 913
 914 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
 915     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 916     Type_privateData *typical(internal->type_);
 917     sig::Type *type(typical->type_);
 918
 919     if (type == NULL)
 920         return;
 921
 922     size_t count(type->data.signature.count);
 923     sig::Element *elements(type->data.signature.elements);
 924
 925     char number[32];
 926
 927     for (size_t index(0); index != count; ++index) {
 928         const char *name;
 929         name = elements[index].name;
 930
 931         if (name == NULL) {
 932             sprintf(number, "%zu", index);
 933             name = number;
 934         }
 935
 936         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
 937     }
 938 }
 939
 940 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)()) {
 941     if (setups + count != signature->count - 1)
 942         throw CYJSError(context, "incorrect number of arguments to ffi function");
 943
 944     size_t size(setups + count);
 945     void *values[size];
 946     memcpy(values, setup, sizeof(void *) * setups);
 947
 948     for (size_t index(setups); index != size; ++index) {
 949         sig::Element *element(&signature->elements[index + 1]);
 950         ffi_type *ffi(cif->arg_types[index]);
 951         // XXX: alignment?
 952         values[index] = new(pool) uint8_t[ffi->size];
 953         CYPoolFFI(&pool, context, element->type, ffi, values[index], arguments[index - setups]);
 954     }
 955
 956     uint8_t value[cif->rtype->size];
 957
 958     if (hooks_ != NULL && hooks_->CallFunction != NULL)
 959         (*hooks_->CallFunction)(context, cif, function, value, values);
 960     else
 961         ffi_call(cif, function, value, values);
 962
 963     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
 964 }
 965
 966 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 967     CYPool pool;
 968     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
 969     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
 970 } CYCatch(NULL) }
 971
 972 JSObjectRef CYMakeType(JSContextRef context, const char *encoding) {
 973     Type_privateData *internal(new Type_privateData(encoding));
 974     return JSObjectMake(context, Type_privateData::Class_, internal);
 975 }
 976
 977 JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
 978     Type_privateData *internal(new Type_privateData(type));
 979     return JSObjectMake(context, Type_privateData::Class_, internal);
 980 }
 981
 982 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
 983     CYPool pool;
 984
 985     sig::Type type;
 986     type.name = NULL;
 987     type.flags = 0;
 988
 989     type.primitive = sig::function_P;
 990     sig::Copy(pool, type.data.signature, *signature);
 991
 992     return CYMakeType(context, &type);
 993 }
 994
 995 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 996     JSObjectRef global(CYGetGlobalObject(context));
 997     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
 998     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
 999
1000     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1001         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1002             if (JSValueRef value = CYGetProperty(context, space, property))
1003                 if (!JSValueIsUndefined(context, value))
1004                     return value;
1005
1006     CYPool pool;
1007     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1008
1009     size_t length(name.size);
1010     char keyed[length + 2];
1011     memcpy(keyed + 1, name.data, length + 1);
1012
1013     static const char *modes = "0124";
1014     for (size_t i(0); i != 4; ++i) {
1015         char mode(modes[i]);
1016         keyed[0] = mode;
1017
1018         if (CYBridgeEntry *entry = CYBridgeHash(keyed, length + 1))
1019             switch (mode) {
1020                 case '0':
1021                     return JSEvaluateScript(CYGetJSContext(context), CYJSString(entry->value_), NULL, NULL, 0, NULL);
1022
1023                 case '1':
1024                     return CYMakeFunctor(context, name.data, entry->value_, &entry->cache_);
1025
1026                 case '2':
1027                     if (void *symbol = CYCastSymbol(name.data)) {
1028                         // XXX: this is horrendously inefficient
1029                         sig::Signature signature;
1030                         sig::Parse(pool, &signature, entry->value_, &Structor_);
1031                         ffi_cif cif;
1032                         sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1033                         return CYFromFFI(context, signature.elements[0].type, cif.rtype, symbol);
1034                     } else return NULL;
1035
1036                 // XXX: implement case 3
1037                 case '4':
1038                     return CYMakeType(context, entry->value_);
1039             }
1040     }
1041
1042     return NULL;
1043 } CYCatch(NULL) }
1044
1045 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1046     JSObjectRef global(CYGetGlobalObject(context));
1047     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1048     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1049
1050     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1051         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1052             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1053             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1054                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1055             JSPropertyNameArrayRelease(subset);
1056         }
1057 }
1058
1059 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1060     if (count != 2)
1061         throw CYJSError(context, "incorrect number of arguments to Pointer constructor");
1062
1063     CYPool pool;
1064
1065     void *value(CYCastPointer<void *>(context, arguments[0]));
1066     const char *type(CYPoolCString(pool, context, arguments[1]));
1067
1068     sig::Signature signature;
1069     sig::Parse(pool, &signature, type, &Structor_);
1070
1071     return CYMakePointer(context, value, _not(size_t), signature.elements[0].type, NULL, NULL);
1072 } CYCatch(NULL) }
1073
1074 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1075     if (count != 1)
1076         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1077     CYPool pool;
1078     const char *type(CYPoolCString(pool, context, arguments[0]));
1079     return CYMakeType(context, type);
1080 } CYCatch(NULL) }
1081
1082 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Primitive primitive, JSValueRef *exception) { CYTry {
1083     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1084
1085     CYPool pool;
1086
1087     sig::Type type;
1088     type.name = NULL;
1089     type.flags = 0;
1090
1091     type.primitive = primitive;
1092     type.data.signature.elements = new(pool) sig::Element[1 + count];
1093     type.data.signature.count = 1 + count;
1094
1095     type.data.signature.elements[0].name = NULL;
1096     type.data.signature.elements[0].type = internal->type_;
1097     type.data.signature.elements[0].offset = _not(size_t);
1098
1099     for (size_t i(0); i != count; ++i) {
1100         sig::Element &element(type.data.signature.elements[i + 1]);
1101         element.name = NULL;
1102         element.offset = _not(size_t);
1103
1104         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1105         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1106         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1107
1108         element.type = internal->type_;
1109     }
1110
1111     return CYMakeType(context, &type);
1112 } CYCatch(NULL) }
1113
1114 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1115     if (count != 1)
1116         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1117     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1118
1119     CYPool pool;
1120     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1121     if (index == _not(size_t))
1122         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1123
1124     sig::Type type;
1125     type.name = NULL;
1126     type.flags = 0;
1127
1128     type.primitive = sig::array_P;
1129     type.data.data.type = internal->type_;
1130     type.data.data.size = index;
1131
1132     return CYMakeType(context, &type);
1133 } CYCatch(NULL) }
1134
1135 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1136     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::block_P, exception);
1137 }
1138
1139 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1140     if (count != 0)
1141         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1142     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1143
1144     sig::Type type(*internal->type_);
1145     type.flags |= JOC_TYPE_CONST;
1146     return CYMakeType(context, &type);
1147 } CYCatch(NULL) }
1148
1149 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1150     return Type_callAsFunction_$With(context, object, _this, count, arguments, sig::function_P, exception);
1151 }
1152
1153 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1154     if (count != 0)
1155         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1156     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1157
1158     sig::Type type;
1159     type.name = NULL;
1160
1161     if (internal->type_->primitive == sig::char_P) {
1162         type.flags = internal->type_->flags;
1163         type.primitive = sig::string_P;
1164         type.data.data.type = NULL;
1165         type.data.data.size = 0;
1166     } else {
1167         type.flags = 0;
1168         type.primitive = sig::pointer_P;
1169         type.data.data.type = internal->type_;
1170         type.data.data.size = 0;
1171     }
1172
1173     return CYMakeType(context, &type);
1174 } CYCatch(NULL) }
1175
1176 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1177     if (count != 1)
1178         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1179     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1180
1181     CYPool pool;
1182     const char *name(CYPoolCString(pool, context, arguments[0]));
1183
1184     sig::Type type(*internal->type_);
1185     type.name = name;
1186     return CYMakeType(context, &type);
1187 } CYCatch(NULL) }
1188
1189 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1190     if (count != 1)
1191         throw CYJSError(context, "incorrect number of arguments to type cast function");
1192     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1193
1194     if (internal->type_->primitive == sig::function_P)
1195         return CYMakeFunctor(context, arguments[0], internal->type_->data.signature);
1196
1197     sig::Type *type(internal->type_);
1198     ffi_type *ffi(internal->GetFFI());
1199     // XXX: alignment?
1200     uint8_t value[ffi->size];
1201     CYPool pool;
1202     CYPoolFFI(&pool, context, type, ffi, value, arguments[0]);
1203     return CYFromFFI(context, type, ffi, value);
1204 } CYCatch(NULL) }
1205
1206 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1207     if (count != 0)
1208         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1209     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1210
1211     sig::Type *type(internal->type_);
1212     size_t length;
1213
1214     if (type->primitive != sig::array_P)
1215         length = _not(size_t);
1216     else {
1217         length = type->data.data.size;
1218         type = type->data.data.type;
1219     }
1220
1221     void *value(calloc(1, internal->GetFFI()->size));
1222     return CYMakePointer(context, value, length, type, NULL, NULL);
1223 } CYCatch(NULL) }
1224
1225 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1226     if (count != 2)
1227         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1228     CYPool pool;
1229     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1230     sig::Signature signature;
1231     sig::Parse(pool, &signature, encoding, &Structor_);
1232     return CYMakeFunctor(context, arguments[0], signature);
1233 } CYCatch(NULL) }
1234
1235 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1236     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1237     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1238 } CYCatch(NULL) }
1239
1240 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1241     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1242 }
1243
1244 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1245     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1246     char string[32];
1247     sprintf(string, "%p", internal->value_);
1248     return CYCastJSValue(context, string);
1249 } CYCatch(NULL) }
1250
1251 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1252     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1253     if (internal->length_ != _not(size_t)) {
1254         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
1255         JSObjectRef toCYON(CYCastJSObject(context, CYGetProperty(context, Array, toCYON_s)));
1256         return CYCallAsFunction(context, toCYON, _this, count, arguments);
1257     } else if (internal->type_->type_ == NULL) pointer: {
1258         char string[32];
1259         sprintf(string, "%p", internal->value_);
1260         return CYCastJSValue(context, string);
1261     } try {
1262         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1263         if (JSValueIsUndefined(context, value))
1264             goto pointer;
1265         CYPool pool;
1266         return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value), NULL));
1267     } catch (const CYException &e) {
1268         goto pointer;
1269     }
1270 } CYCatch(NULL) }
1271
1272 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1273     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1274     return CYMakeType(context, internal->type_->type_);
1275 } CYCatch(NULL) }
1276
1277 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1278     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1279     return CYMakeType(context, &internal->signature_);
1280 } CYCatch(NULL) }
1281
1282 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1283     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1284     return CYCastJSValue(context, internal->GetFFI()->alignment);
1285 } CYCatch(NULL) }
1286
1287 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1288     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1289     return CYCastJSValue(context, internal->type_->name);
1290 } CYCatch(NULL) }
1291
1292 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1293     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1294     return CYCastJSValue(context, internal->GetFFI()->size);
1295 } CYCatch(NULL) }
1296
1297 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1298     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1299     CYPool pool;
1300     const char *type(sig::Unparse(pool, internal->type_));
1301     return CYCastJSValue(context, CYJSString(type));
1302 } CYCatch(NULL) }
1303
1304 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1305     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1306     CYLocalPool pool;
1307     std::ostringstream out;
1308     CYOptions options;
1309     CYOutput output(out, options);
1310     (new(pool) CYEncodedType(Decode(pool, internal->type_)))->Output(output, CYNoFlags);
1311     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1312 } CYCatch(NULL) }
1313
1314 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1315     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1316 }
1317
1318 static JSStaticFunction Pointer_staticFunctions[4] = {
1319     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1320     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1321     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1322     {NULL, NULL, 0}
1323 };
1324
1325 static JSStaticValue Pointer_staticValues[2] = {
1326     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1327     {NULL, NULL, NULL, 0}
1328 };
1329
1330 static JSStaticFunction Struct_staticFunctions[2] = {
1331     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1332     {NULL, NULL, 0}
1333 };
1334
1335 static JSStaticFunction Functor_staticFunctions[4] = {
1336     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1337     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1338     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1339     {NULL, NULL, 0}
1340 };
1341
1342 namespace cy {
1343     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1344 }
1345
1346 static JSStaticValue Functor_staticValues[2] = {
1347     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1348     {NULL, NULL, NULL, 0}
1349 };
1350
1351 static JSStaticValue Type_staticValues[4] = {
1352     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1353     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1354     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1355     {NULL, NULL, NULL, 0}
1356 };
1357
1358 static JSStaticFunction Type_staticFunctions[10] = {
1359     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1360     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1361     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1362     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1363     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1364     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1365     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1366     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1367     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1368     {NULL, NULL, 0}
1369 };
1370
1371 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
1372
1373 void CYSetArgs(int argc, const char *argv[]) {
1374     JSContextRef context(CYGetJSContext());
1375     JSValueRef args[argc];
1376     for (int i(0); i != argc; ++i)
1377         args[i] = CYCastJSValue(context, argv[i]);
1378
1379     JSObjectRef array;
1380     if (JSObjectMakeArray$ != NULL)
1381         array = _jsccall(*JSObjectMakeArray$, context, argc, args);
1382     else {
1383         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
1384         JSValueRef value(CYCallAsFunction(context, Array, NULL, argc, args));
1385         array = CYCastJSObject(context, value);
1386     }
1387
1388     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1389     CYSetProperty(context, System, CYJSString("args"), array);
1390 }
1391
1392 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1393     return JSContextGetGlobalObject(context);
1394 }
1395
1396 class ExecutionHandle {
1397   private:
1398     JSContextRef context_;
1399     void *handle_;
1400
1401   public:
1402     ExecutionHandle(JSContextRef context) :
1403         context_(context)
1404     {
1405         if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
1406             handle_ = (*hooks_->ExecuteStart)(context_);
1407         else
1408             handle_ = NULL;
1409     }
1410
1411     ~ExecutionHandle() {
1412         if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
1413             (*hooks_->ExecuteEnd)(context_, handle_);
1414     }
1415 };
1416
1417 const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1418     JSValueRef exception(NULL);
1419
1420     ExecutionHandle handle(context);
1421
1422     JSValueRef result; try {
1423         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1424     } catch (const char *error) {
1425         return error;
1426     }
1427
1428     if (exception != NULL) error:
1429         return CYPoolCString(pool, context, CYJSString(context, exception));
1430
1431     if (JSValueIsUndefined(context, result))
1432         return NULL;
1433
1434     const char *json; try {
1435         json = CYPoolCCYON(pool, context, result, &exception);
1436     } catch (const char *error) {
1437         return error;
1438     }
1439
1440     if (exception != NULL)
1441         goto error;
1442
1443     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1444
1445     return json;
1446 }
1447
1448 static bool initialized_ = false;
1449
1450 void CYInitializeDynamic() {
1451     if (!initialized_)
1452         initialized_ = true;
1453     else return;
1454
1455     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1456     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1457
1458     JSClassDefinition definition;
1459
1460     definition = kJSClassDefinitionEmpty;
1461     definition.className = "All";
1462     definition.getProperty = &All_getProperty;
1463     definition.getPropertyNames = &All_getPropertyNames;
1464     All_ = JSClassCreate(&definition);
1465
1466     definition = kJSClassDefinitionEmpty;
1467     definition.className = "Context";
1468     definition.finalize = &CYFinalize;
1469     Context_ = JSClassCreate(&definition);
1470
1471     definition = kJSClassDefinitionEmpty;
1472     definition.className = "Functor";
1473     definition.staticFunctions = cy::Functor::StaticFunctions;
1474     definition.staticValues = Functor_staticValues;
1475     definition.callAsFunction = &Functor_callAsFunction;
1476     definition.finalize = &CYFinalize;
1477     Functor_ = JSClassCreate(&definition);
1478
1479     definition = kJSClassDefinitionEmpty;
1480     definition.className = "Pointer";
1481     definition.staticFunctions = Pointer_staticFunctions;
1482     definition.staticValues = Pointer_staticValues;
1483     definition.getProperty = &Pointer_getProperty;
1484     definition.setProperty = &Pointer_setProperty;
1485     definition.finalize = &CYFinalize;
1486     Pointer_ = JSClassCreate(&definition);
1487
1488     definition = kJSClassDefinitionEmpty;
1489     definition.className = "Struct";
1490     definition.staticFunctions = Struct_staticFunctions;
1491     definition.getProperty = &Struct_getProperty;
1492     definition.setProperty = &Struct_setProperty;
1493     definition.getPropertyNames = &Struct_getPropertyNames;
1494     definition.finalize = &CYFinalize;
1495     Struct_ = JSClassCreate(&definition);
1496
1497     definition = kJSClassDefinitionEmpty;
1498     definition.className = "Type";
1499     definition.staticValues = Type_staticValues;
1500     definition.staticFunctions = Type_staticFunctions;
1501     definition.callAsFunction = &Type_callAsFunction;
1502     definition.callAsConstructor = &Type_callAsConstructor;
1503     definition.finalize = &CYFinalize;
1504     Type_privateData::Class_ = JSClassCreate(&definition);
1505
1506     definition = kJSClassDefinitionEmpty;
1507     definition.className = "Global";
1508     //definition.getProperty = &Global_getProperty;
1509     Global_ = JSClassCreate(&definition);
1510
1511     Array_s = JSStringCreateWithUTF8CString("Array");
1512     cy_s = JSStringCreateWithUTF8CString("$cy");
1513     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1514     length_s = JSStringCreateWithUTF8CString("length");
1515     message_s = JSStringCreateWithUTF8CString("message");
1516     name_s = JSStringCreateWithUTF8CString("name");
1517     pop_s = JSStringCreateWithUTF8CString("pop");
1518     prototype_s = JSStringCreateWithUTF8CString("prototype");
1519     push_s = JSStringCreateWithUTF8CString("push");
1520     splice_s = JSStringCreateWithUTF8CString("splice");
1521     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
1522     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
1523     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
1524     toString_s = JSStringCreateWithUTF8CString("toString");
1525
1526     Result_ = JSStringCreateWithUTF8CString("_");
1527
1528     if (hooks_ != NULL && hooks_->Initialize != NULL)
1529         (*hooks_->Initialize)();
1530 }
1531
1532 void CYThrow(JSContextRef context, JSValueRef value) {
1533     if (value != NULL)
1534         throw CYJSError(context, value);
1535 }
1536
1537 const char *CYJSError::PoolCString(CYPool &pool) const {
1538     // XXX: this used to be CYPoolCString
1539     return CYPoolCCYON(pool, context_, value_);
1540 }
1541
1542 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1543     // XXX: what if the context is different?
1544     return value_;
1545 }
1546
1547 JSValueRef CYCastJSError(JSContextRef context, const char *message) {
1548     JSObjectRef Error(CYGetCachedObject(context, CYJSString("Error")));
1549     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
1550     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
1551 }
1552
1553 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1554     return CYCastJSError(context, message_);
1555 }
1556
1557 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1558     _assert(context != NULL);
1559
1560     CYPool pool;
1561
1562     va_list args;
1563     va_start(args, format);
1564     // XXX: there might be a beter way to think about this
1565     const char *message(pool.vsprintf(64, format, args));
1566     va_end(args);
1567
1568     value_ = CYCastJSError(context, message);
1569 }
1570
1571 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
1572     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
1573 }
1574
1575 extern "C" bool CydgetMemoryParse(const uint16_t **data, size_t *size);
1576
1577 void *CYMapFile(const char *path, size_t *psize) {
1578     int fd;
1579     _syscall(fd = open(path, O_RDONLY));
1580
1581     struct stat stat;
1582     _syscall(fstat(fd, &stat));
1583     size_t size(stat.st_size);
1584
1585     *psize = size;
1586
1587     void *base;
1588     _syscall(base = mmap(NULL, size, PROT_READ, MAP_SHARED, fd, 0));
1589
1590     _syscall(close(fd));
1591     return base;
1592 }
1593
1594 static void CYRunSetups(JSContextRef context) {
1595     std::string folder("/etc/cycript/setup.d");
1596     DIR *setups(opendir(folder.c_str()));
1597     if (setups == NULL)
1598         return;
1599
1600     for (;;) {
1601         dirent setup;
1602         dirent *result;
1603         _syscall(readdir_r(setups, &setup, &result));
1604
1605         if (result == NULL)
1606             break;
1607         _assert(result == &setup);
1608
1609         const char *name(setup.d_name);
1610         size_t length(strlen(name));
1611         if (length < 4)
1612             continue;
1613
1614         if (name[0] == '.')
1615             continue;
1616         if (memcmp(name + length - 3, ".cy", 3) != 0)
1617             continue;
1618
1619         std::string script(folder + "/" + name);
1620         CYUTF8String utf8;
1621         utf8.data = reinterpret_cast<char *>(CYMapFile(script.c_str(), &utf8.size));
1622
1623         CYPool pool;
1624         CYUTF16String utf16(CYPoolUTF16String(pool, utf8));
1625         munmap(const_cast<char *>(utf8.data), utf8.size);
1626
1627         // XXX: this should not be used
1628         CydgetMemoryParse(&utf16.data, &utf16.size);
1629
1630         CYExecute(context, pool, CYPoolUTF8String(pool, utf16));
1631         free(const_cast<uint16_t *>(utf16.data));
1632     }
1633
1634     _syscall(closedir(setups));
1635 }
1636
1637 static JSValueRef require(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1638     _assert(count == 1);
1639     CYPool pool;
1640
1641     Dl_info addr;
1642     _assert(dladdr(reinterpret_cast<void *>(&require), &addr) != 0);
1643     char *lib(pool.strdup(addr.dli_fname));
1644
1645     char *slash(strrchr(lib, '/'));
1646     _assert(slash != NULL);
1647     *slash = '\0';
1648
1649     CYJSString property("exports");
1650     JSObjectRef module;
1651
1652     const char *path(pool.strcat(lib, "/cycript/", CYPoolCString(pool, context, arguments[0]), ".cy", NULL));
1653     CYJSString key(path);
1654     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
1655     JSValueRef cache(CYGetProperty(context, modules, key));
1656
1657     if (!JSValueIsUndefined(context, cache))
1658         module = CYCastJSObject(context, cache);
1659     else {
1660         CYUTF8String code;
1661         code.data = reinterpret_cast<char *>(CYMapFile(path, &code.size));
1662
1663         std::stringstream wrap;
1664         wrap << "(function (exports, require, module) { " << code << "\n});";
1665         code = CYPoolCode(pool, wrap.str().c_str());
1666
1667         JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1668         JSObjectRef function(CYCastJSObject(context, value));
1669
1670         module = JSObjectMake(context, NULL, NULL);
1671         JSObjectRef exports(JSObjectMake(context, NULL, NULL));
1672         CYSetProperty(context, module, property, exports);
1673
1674         JSValueRef arguments[3] = { exports, JSObjectMakeFunctionWithCallback(context, CYJSString("require"), &require), module };
1675         CYCallAsFunction(context, function, NULL, 3, arguments);
1676         CYSetProperty(context, modules, key, module);
1677     }
1678
1679     return CYGetProperty(context, module, property);
1680 } CYCatch(NULL) }
1681
1682 extern "C" void CYSetupContext(JSGlobalContextRef context) {
1683     CYInitializeDynamic();
1684
1685     JSObjectRef global(CYGetGlobalObject(context));
1686
1687     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
1688     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
1689
1690 /* Cache Globals {{{ */
1691     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
1692     CYSetProperty(context, cy, CYJSString("Array"), Array);
1693
1694     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
1695     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
1696
1697     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
1698     CYSetProperty(context, cy, CYJSString("Error"), Error);
1699
1700     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
1701     CYSetProperty(context, cy, CYJSString("Function"), Function);
1702
1703     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
1704     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
1705
1706     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1707     CYSetProperty(context, cy, CYJSString("Object"), Object);
1708
1709     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
1710     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
1711
1712     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
1713     CYSetProperty(context, cy, CYJSString("String"), String);
1714
1715     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
1716     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
1717 /* }}} */
1718
1719     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1720     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
1721
1722     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1723     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1724     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
1725
1726     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1727     JSObjectSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
1728     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
1729
1730     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1731     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1732
1733     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
1734     CYSetProperty(context, cy, CYJSString("modules"), modules);
1735
1736     JSObjectRef all(JSObjectMake(context, All_, NULL));
1737     CYSetProperty(context, cycript, CYJSString("all"), all);
1738
1739     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
1740     CYSetProperty(context, cycript, CYJSString("alls"), alls);
1741
1742     if (true) {
1743         JSObjectRef last(NULL), curr(global);
1744
1745         goto next; for (JSValueRef next;;) {
1746             if (JSValueIsNull(context, next))
1747                 break;
1748             last = curr;
1749             curr = CYCastJSObject(context, next);
1750           next:
1751             next = JSObjectGetPrototype(context, curr);
1752         }
1753
1754         JSObjectSetPrototype(context, last, all);
1755     }
1756
1757     CYSetProperty(context, global, CYJSString("$cyq"), &$cyq, kJSPropertyAttributeDontEnum);
1758
1759     JSObjectRef System(JSObjectMake(context, NULL, NULL));
1760     CYSetProperty(context, cy, CYJSString("System"), System);
1761
1762     CYSetProperty(context, all, CYJSString("require"), &require, kJSPropertyAttributeDontEnum);
1763
1764     CYSetProperty(context, global, CYJSString("system"), System);
1765     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
1766     //CYSetProperty(context, System, CYJSString("global"), global);
1767     CYSetProperty(context, System, CYJSString("print"), &System_print);
1768
1769     if (CYBridgeEntry *entry = CYBridgeHash("1dlerror", 8))
1770         entry->cache_ = new cy::Functor(entry->value_, reinterpret_cast<void (*)()>(&dlerror));
1771
1772     if (hooks_ != NULL && hooks_->SetupContext != NULL)
1773         (*hooks_->SetupContext)(context);
1774
1775     CYArrayPush(context, alls, cycript);
1776
1777     CYRunSetups(context);
1778 }
1779
1780 static JSGlobalContextRef context_;
1781
1782 JSGlobalContextRef CYGetJSContext() {
1783     CYInitializeDynamic();
1784
1785     if (context_ == NULL) {
1786         context_ = JSGlobalContextCreate(Global_);
1787         CYSetupContext(context_);
1788     }
1789
1790     return context_;
1791 }
1792
1793 void CYDestroyContext() {
1794     if (context_ == NULL)
1795         return;
1796     JSGlobalContextRelease(context_);
1797     context_ = NULL;
1798 }