Execute.cpp

   1 /* Cycript - Optimizing JavaScript Compiler/Runtime
   2  * Copyright (C) 2009-2015  Jay Freeman (saurik)
   3 */
   4
   5 /* GNU Affero General Public License, Version 3 {{{ */
   6 /*
   7  * This program is free software: you can redistribute it and/or modify
   8  * it under the terms of the GNU Affero General Public License as published by
   9  * the Free Software Foundation, either version 3 of the License, or
  10  * (at your option) any later version.
  11
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Affero General Public License for more details.
  16
  17  * You should have received a copy of the GNU Affero General Public License
  18  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19 **/
  20 /* }}} */
  21
  22 #include "cycript.hpp"
  23
  24 #include <iostream>
  25 #include <set>
  26 #include <map>
  27 #include <iomanip>
  28 #include <sstream>
  29 #include <cmath>
  30
  31 #include <dlfcn.h>
  32 #include <dirent.h>
  33 #include <fcntl.h>
  34 #include <unistd.h>
  35
  36 #include <sys/mman.h>
  37 #include <sys/stat.h>
  38
  39 #include <sqlite3.h>
  40
  41 #include "sig/parse.hpp"
  42 #include "sig/ffi_type.hpp"
  43
  44 #include "Code.hpp"
  45 #include "Decode.hpp"
  46 #include "Error.hpp"
  47 #include "Execute.hpp"
  48 #include "Internal.hpp"
  49 #include "JavaScript.hpp"
  50 #include "Pooling.hpp"
  51 #include "String.hpp"
  52
  53 const char *sqlite3_column_string(sqlite3_stmt *stmt, int n) {
  54     return reinterpret_cast<const char *>(sqlite3_column_text(stmt, n));
  55 }
  56
  57 char *sqlite3_column_pooled(CYPool &pool, sqlite3_stmt *stmt, int n) {
  58     if (const char *value = sqlite3_column_string(stmt, n))
  59         return pool.strdup(value);
  60     else return NULL;
  61 }
  62
  63 static std::vector<CYHook *> &GetHooks() {
  64     static std::vector<CYHook *> hooks;
  65     return hooks;
  66 }
  67
  68 CYRegisterHook::CYRegisterHook(CYHook *hook) {
  69     GetHooks().push_back(hook);
  70 }
  71
  72 /* JavaScript Properties {{{ */
  73 bool CYHasProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  74     return JSObjectHasProperty(context, object, name);
  75 }
  76
  77 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  78     return _jsccall(JSObjectGetPropertyAtIndex, context, object, index);
  79 }
  80
  81 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  82     return _jsccall(JSObjectGetProperty, context, object, name);
  83 }
  84
  85 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
  86     _jsccall(JSObjectSetPropertyAtIndex, context, object, index, value);
  87 }
  88
  89 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
  90     _jsccall(JSObjectSetProperty, context, object, name, value, attributes);
  91 }
  92
  93 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef (*callback)(JSContextRef, JSObjectRef, JSObjectRef, size_t, const JSValueRef[], JSValueRef *), JSPropertyAttributes attributes) {
  94     CYSetProperty(context, object, name, JSObjectMakeFunctionWithCallback(context, name, callback), attributes);
  95 }
  96
  97 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
  98     JSObjectSetPrototype(context, object, value);
  99     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
 100 }
 101 /* }}} */
 102 /* JavaScript Strings {{{ */
 103 JSStringRef CYCopyJSString(const char *value) {
 104     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 105 }
 106
 107 JSStringRef CYCopyJSString(JSStringRef value) {
 108     return value == NULL ? NULL : JSStringRetain(value);
 109 }
 110
 111 JSStringRef CYCopyJSString(CYUTF8String value) {
 112     if (memchr(value.data, '\0', value.size) != NULL) {
 113         CYPool pool;
 114         return CYCopyJSString(CYPoolUTF16String(pool, value));
 115     } else if (value.data[value.size] != '\0') {
 116         CYPool pool;
 117         return CYCopyJSString(pool.strmemdup(value.data, value.size));
 118     } else {
 119         return CYCopyJSString(value.data);
 120     }
 121 }
 122
 123 JSStringRef CYCopyJSString(CYUTF16String value) {
 124     return JSStringCreateWithCharacters(value.data, value.size);
 125 }
 126
 127 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 128     if (JSValueIsNull(context, value))
 129         return NULL;
 130     return _jsccall(JSValueToStringCopy, context, value);
 131 }
 132
 133 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 134     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 135 }
 136
 137 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 138     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 139 }
 140
 141 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 142     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 143     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 144     return utf8.data;
 145 }
 146
 147 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 148     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 149 }
 150 /* }}} */
 151 /* Index Offsets {{{ */
 152 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 153     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 154 }
 155 /* }}} */
 156
 157 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 158
 159 static JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 160     if (JSObjectMakeArray$ != NULL)
 161         return _jsccall(*JSObjectMakeArray$, context, length, values);
 162     else {
 163         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 164         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 165         return CYCastJSObject(context, value);
 166     }
 167 }
 168
 169 static JSClassRef All_;
 170 static JSClassRef Context_;
 171 static JSClassRef CArray_;
 172 static JSClassRef CString_;
 173 JSClassRef Functor_;
 174 static JSClassRef Global_;
 175 static JSClassRef Pointer_;
 176 static JSClassRef Struct_;
 177
 178 JSStringRef Array_s;
 179 JSStringRef cy_s;
 180 JSStringRef cyi_s;
 181 JSStringRef length_s;
 182 JSStringRef message_s;
 183 JSStringRef name_s;
 184 JSStringRef pop_s;
 185 JSStringRef prototype_s;
 186 JSStringRef push_s;
 187 JSStringRef splice_s;
 188 JSStringRef toCYON_s;
 189 JSStringRef toJSON_s;
 190 JSStringRef toPointer_s;
 191 JSStringRef toString_s;
 192 JSStringRef weak_s;
 193
 194 static sqlite3 *database_;
 195
 196 static JSStringRef Result_;
 197
 198 void CYFinalize(JSObjectRef object) {
 199     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 200     _assert(internal->count_ != _not(unsigned));
 201     if (--internal->count_ == 0)
 202         delete internal;
 203 }
 204
 205 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 206     //_assert(false);
 207     return aggregate;
 208 }
 209
 210 JSClassRef Type_privateData::Class_;
 211
 212 struct Context :
 213     CYData
 214 {
 215     JSGlobalContextRef context_;
 216
 217     Context(JSGlobalContextRef context) :
 218         context_(context)
 219     {
 220     }
 221 };
 222
 223 struct CArray :
 224     CYOwned
 225 {
 226     Type_privateData *type_;
 227     size_t length_;
 228
 229     CArray(void *value, JSContextRef context, JSObjectRef owner, size_t length, const sig::Type &type, ffi_type *ffi) :
 230         CYOwned(value, context, owner),
 231         type_(new(*pool_) Type_privateData(type, ffi)),
 232         length_(length)
 233     {
 234     }
 235 };
 236
 237 struct CString :
 238     CYOwned
 239 {
 240     CString(char *value, JSContextRef context, JSObjectRef owner) :
 241         CYOwned(value, context, owner)
 242     {
 243     }
 244 };
 245
 246 struct Pointer :
 247     CYOwned
 248 {
 249     Type_privateData *type_;
 250
 251     Pointer(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type) :
 252         CYOwned(value, context, owner),
 253         type_(new(*pool_) Type_privateData(type))
 254     {
 255     }
 256
 257     Pointer(void *value, JSContextRef context, JSObjectRef owner, const char *encoding) :
 258         CYOwned(value, context, owner),
 259         type_(new(*pool_) Type_privateData(encoding))
 260     {
 261     }
 262 };
 263
 264 struct Struct_privateData :
 265     CYOwned
 266 {
 267     Type_privateData *type_;
 268
 269     Struct_privateData(void *value, JSContextRef context, JSObjectRef owner, const sig::Type &type, ffi_type *ffi) :
 270         CYOwned(value, context, owner),
 271         type_(new(*pool_) Type_privateData(type, ffi))
 272     {
 273     }
 274 };
 275
 276 JSObjectRef CYMakeCArray(JSContextRef context, void *data, size_t length, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 277     CArray *internal(new CArray(data, context, owner, length, type, ffi));
 278
 279     if (owner == NULL) {
 280         size_t size(ffi->size * length);
 281         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 282         memcpy(copy, internal->value_, size);
 283         internal->value_ = copy;
 284     }
 285
 286     return JSObjectMake(context, CArray_, internal);
 287 }
 288
 289 JSObjectRef CYMakeCString(JSContextRef context, char *pointer, JSObjectRef owner) {
 290     CString *internal(new CString(pointer, context, owner));
 291     if (owner == NULL)
 292         internal->value_ = internal->pool_->strdup(static_cast<const char *>(internal->value_));
 293     return JSObjectMake(context, CString_, internal);
 294 }
 295
 296 JSObjectRef CYMakeStruct(JSContextRef context, void *data, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 297     Struct_privateData *internal(new Struct_privateData(data, context, owner, type, ffi));
 298
 299     if (owner == NULL) {
 300         size_t size(ffi->size);
 301         void *copy(internal->pool_->malloc<void>(size, ffi->alignment));
 302         memcpy(copy, internal->value_, size);
 303         internal->value_ = copy;
 304     }
 305
 306     return JSObjectMake(context, Struct_, internal);
 307 }
 308
 309 static void *CYCastSymbol(const char *name) {
 310     for (CYHook *hook : GetHooks())
 311         if (hook->CastSymbol != NULL)
 312             if (void *value = (*hook->CastSymbol)(name))
 313                 return value;
 314     return dlsym(RTLD_DEFAULT, name);
 315 }
 316
 317 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 318     return JSValueMakeBoolean(context, value);
 319 }
 320
 321 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 322     return JSValueMakeNumber(context, value);
 323 }
 324
 325 #define CYCastJSValue_(Type_) \
 326     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 327         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 328         return JSValueMakeNumber(context, static_cast<double>(value)); \
 329     }
 330
 331 CYCastJSValue_(signed short int)
 332 CYCastJSValue_(unsigned short int)
 333 CYCastJSValue_(signed int)
 334 CYCastJSValue_(unsigned int)
 335 CYCastJSValue_(signed long int)
 336 CYCastJSValue_(unsigned long int)
 337 CYCastJSValue_(signed long long int)
 338 CYCastJSValue_(unsigned long long int)
 339
 340 JSValueRef CYJSUndefined(JSContextRef context) {
 341     return JSValueMakeUndefined(context);
 342 }
 343
 344 double CYCastDouble(JSContextRef context, JSValueRef value) {
 345     return _jsccall(JSValueToNumber, context, value);
 346 }
 347
 348 bool CYCastBool(JSContextRef context, JSValueRef value) {
 349     return JSValueToBoolean(context, value);
 350 }
 351
 352 JSValueRef CYJSNull(JSContextRef context) {
 353     return JSValueMakeNull(context);
 354 }
 355
 356 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 357     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 358 }
 359
 360 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 361     return CYCastJSValue(context, CYJSString(value));
 362 }
 363
 364 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 365     return _jsccall(JSValueToObject, context, value);
 366 }
 367
 368 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 369     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 370 }
 371
 372 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 373     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 374 }
 375
 376 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 377     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 378 }
 379
 380 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 381     return JSValueIsStrictEqual(context, lhs, rhs);
 382 }
 383
 384 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 385     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 386 }
 387
 388 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 389     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 390 }
 391
 392 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 393     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 394     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 395 }
 396
 397 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 398     return CYArrayPush(context, array, 1, &value);
 399 }
 400
 401 template <size_t Size_>
 402 class CYArrayBuilder {
 403   private:
 404     JSContextRef context_;
 405     JSObjectRef &array_;
 406     size_t size_;
 407     JSValueRef values_[Size_];
 408
 409     void flush() {
 410         if (array_ == NULL)
 411             array_ = CYObjectMakeArray(context_, size_, values_);
 412         else
 413             CYArrayPush(context_, array_, size_, values_);
 414     }
 415
 416   public:
 417     CYArrayBuilder(JSContextRef context, JSObjectRef &array) :
 418         context_(context),
 419         array_(array),
 420         size_(0)
 421     {
 422     }
 423
 424     ~CYArrayBuilder() {
 425         flush();
 426     }
 427
 428     void operator ()(JSValueRef value) {
 429         if (size_ == Size_) {
 430             flush();
 431             size_ = 0;
 432         }
 433
 434         values_[size_++] = value;
 435     }
 436 };
 437
 438 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 439     FILE *file(stdout);
 440
 441     if (count == 0)
 442         fputc('\n', file);
 443     else {
 444         CYPool pool;
 445         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 446         fwrite(string.data, string.size, 1, file);
 447     }
 448
 449     fflush(file);
 450     return CYJSUndefined(context);
 451 } CYCatch(NULL) }
 452
 453 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 454
 455 _visible void CYGarbageCollect(JSContextRef context) {
 456     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 457 }
 458
 459 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 460     CYPool pool;
 461     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 462     std::stringbuf value(std::string(before.data, before.size));
 463     CYUTF8String after(CYPoolCode(pool, value));
 464     return CYCastJSValue(context, CYJSString(after));
 465 } CYCatch_(NULL, "SyntaxError") }
 466
 467 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 468     CYGarbageCollect(context);
 469     return CYJSUndefined(context);
 470 } CYCatch(NULL) }
 471
 472 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 473     switch (JSType type = JSValueGetType(context, value)) {
 474         case kJSTypeUndefined:
 475             return "undefined";
 476         case kJSTypeNull:
 477             return "null";
 478         case kJSTypeBoolean:
 479             return CYCastBool(context, value) ? "true" : "false";
 480
 481         case kJSTypeNumber: {
 482             std::ostringstream str;
 483             CYNumerify(str, CYCastDouble(context, value));
 484             std::string value(str.str());
 485             return pool.strmemdup(value.c_str(), value.size());
 486         } break;
 487
 488         case kJSTypeString: {
 489             std::ostringstream str;
 490             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 491             CYStringify(str, string.data, string.size);
 492             std::string value(str.str());
 493             return pool.strmemdup(value.c_str(), value.size());
 494         } break;
 495
 496         case kJSTypeObject:
 497             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 498         default:
 499             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 500     }
 501 } CYCatch(NULL) }
 502
 503 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 504     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 505 }
 506
 507 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 508     if (objects != NULL)
 509         return CYPoolCCYON(pool, context, value, *objects);
 510     else {
 511         std::set<void *> objects;
 512         return CYPoolCCYON(pool, context, value, objects);
 513     }
 514 }
 515
 516 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 517     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 518     if (CYIsCallable(context, toCYON)) {
 519         // XXX: this needs to be abstracted behind some kind of function
 520         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 521         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 522         _assert(value != NULL);
 523         return CYPoolCString(pool, context, value);
 524     }
 525
 526     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 527     if (CYIsCallable(context, toJSON)) {
 528         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 529         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 530     }
 531
 532     if (JSObjectIsFunction(context, object)) {
 533         JSValueRef toString(CYGetProperty(context, object, toString_s));
 534         if (CYIsCallable(context, toString)) {
 535             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 536             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 537             _assert(value != NULL);
 538             return CYPoolCString(pool, context, value);
 539         }
 540     }
 541
 542     _assert(objects.insert(object).second);
 543
 544     std::ostringstream str;
 545
 546     str << '{';
 547
 548     // XXX: this is, sadly, going to leak
 549     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 550
 551     bool comma(false);
 552
 553     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 554         if (comma)
 555             str << ',';
 556         else
 557             comma = true;
 558
 559         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 560         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 561
 562         if (CYIsKey(string))
 563             str << string.data;
 564         else
 565             CYStringify(str, string.data, string.size);
 566
 567         str << ':';
 568
 569         try {
 570             JSValueRef value(CYGetProperty(context, object, name));
 571             str << CYPoolCCYON(pool, context, value, objects);
 572         } catch (const CYException &error) {
 573             str << "@error";
 574         }
 575     }
 576
 577     JSPropertyNameArrayRelease(names);
 578
 579     str << '}';
 580
 581     std::string string(str.str());
 582     return pool.strmemdup(string.c_str(), string.size());
 583 }
 584
 585 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 586     if (count == 0)
 587         return NULL;
 588     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 589 }
 590
 591 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 592     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 593     // XXX: this is horribly inefficient
 594     std::set<void *> backup;
 595     if (objects == NULL)
 596         objects = &backup;
 597
 598     CYPool pool;
 599     std::ostringstream str;
 600
 601     str << '[';
 602
 603     JSValueRef length(CYGetProperty(context, _this, length_s));
 604     bool comma(false);
 605
 606     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 607         if (comma)
 608             str << ',';
 609         else
 610             comma = true;
 611
 612         try {
 613             JSValueRef value(CYGetProperty(context, _this, index));
 614             if (!JSValueIsUndefined(context, value))
 615                 str << CYPoolCCYON(pool, context, value, *objects);
 616             else {
 617                 str << ',';
 618                 comma = false;
 619             }
 620         } catch (const CYException &error) {
 621             str << "@error";
 622         }
 623     }
 624
 625     str << ']';
 626
 627     std::string value(str.str());
 628     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 629 } CYCatch(NULL) }
 630
 631 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 632     CYPool pool;
 633     std::ostringstream str;
 634
 635     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 636     CYStringify(str, string.data, string.size);
 637
 638     std::string value(str.str());
 639     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 640 } CYCatch(NULL) }
 641
 642 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 643     Pointer *internal(new Pointer(pointer, context, owner, type));
 644     return JSObjectMake(context, Pointer_, internal);
 645 }
 646
 647 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const char *encoding, JSObjectRef owner) {
 648     Pointer *internal(new Pointer(pointer, context, owner, encoding));
 649     return JSObjectMake(context, Pointer_, internal);
 650 }
 651
 652 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const sig::Signature &signature) {
 653     return JSObjectMake(context, Functor_, new cy::Functor(signature, function));
 654 }
 655
 656 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 657     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 658     if (function == NULL)
 659         return NULL;
 660
 661     cy::Functor *internal(new cy::Functor(encoding, function));
 662     ++internal->count_;
 663     return JSObjectMake(context, Functor_, internal);
 664 }
 665
 666 static bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 667     return CYGetOffset(CYPoolCString(pool, context, value), index);
 668 }
 669
 670 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 671     if (value == NULL)
 672         return NULL;
 673     else switch (JSValueGetType(context, value)) {
 674         case kJSTypeNull:
 675             return NULL;
 676         case kJSTypeObject: {
 677             JSObjectRef object((JSObjectRef) value);
 678             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 679                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 680                 return internal->value_;
 681             }
 682             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 683             if (CYIsCallable(context, toPointer)) {
 684                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 685                 _assert(value != NULL);
 686                 return CYCastPointer_(context, value, guess);
 687             }
 688         } default:
 689             if (guess != NULL)
 690                 *guess = true;
 691         case kJSTypeNumber:
 692             double number(CYCastDouble(context, value));
 693             if (!std::isnan(number))
 694                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 695             if (guess == NULL)
 696                 throw CYJSError(context, "cannot convert value to pointer");
 697             else {
 698                 *guess = true;
 699                 return NULL;
 700             }
 701     }
 702 }
 703
 704 namespace sig {
 705
 706 // XXX: this is somehow not quite a template :/
 707
 708 template <>
 709 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 710     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 711 }
 712
 713 #define CYPoolFFI_(Type_) \
 714 template <> \
 715 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 716     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 717 }
 718
 719 CYPoolFFI_(char)
 720 CYPoolFFI_(double)
 721 CYPoolFFI_(float)
 722 CYPoolFFI_(signed char)
 723 CYPoolFFI_(signed int)
 724 CYPoolFFI_(signed long int)
 725 CYPoolFFI_(signed long long int)
 726 CYPoolFFI_(signed short int)
 727 CYPoolFFI_(unsigned char)
 728 CYPoolFFI_(unsigned int)
 729 CYPoolFFI_(unsigned long int)
 730 CYPoolFFI_(unsigned long long int)
 731 CYPoolFFI_(unsigned short int)
 732
 733 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 734     _assert(false);
 735 }
 736
 737 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 738     _assert(false);
 739 }
 740
 741 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 742     bool guess(false);
 743     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 744     if (guess && pool != NULL)
 745         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 746 }
 747
 748 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 749     _assert(false);
 750 }
 751
 752 static void CYArrayCopy(CYPool *pool, JSContextRef context, uint8_t *base, size_t length, const sig::Type &type, ffi_type *ffi, JSValueRef value, JSObjectRef object) {
 753     for (size_t index(0); index != length; ++index) {
 754         JSValueRef rhs;
 755         if (object == NULL)
 756             rhs = value;
 757         else {
 758             rhs = CYGetProperty(context, object, index);
 759             if (JSValueIsUndefined(context, rhs))
 760                 throw CYJSError(context, "unable to extract array value");
 761         }
 762
 763         type.PoolFFI(pool, context, ffi, base, rhs);
 764         base += ffi->size;
 765     }
 766 }
 767
 768 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 769     bool guess(false);
 770     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value, &guess);
 771     if (!guess || pool == NULL || !JSValueIsObject(context, value))
 772         return;
 773     JSObjectRef object(CYCastJSObject(context, value));
 774     if (CYHasProperty(context, object, length_s)) {
 775         size_t length(CYArrayLength(context, object));
 776         ffi_type *element(type.GetFFI(*pool));
 777         size_t size(element->size * length);
 778         uint8_t *base(pool->malloc<uint8_t>(size, element->alignment));
 779         CYArrayCopy(pool, context, base, length, type, element, value, object);
 780         *reinterpret_cast<void **>(data) = base;
 781     }
 782 }
 783
 784 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 785     if (size == 0)
 786         return;
 787     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 788     JSObjectRef object(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 789     CYArrayCopy(pool, context, base, size, type, ffi->elements[0], value, object);
 790 }
 791
 792 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 793     _assert(!overlap);
 794
 795     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 796     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 797     for (size_t index(0); index != signature.count; ++index) {
 798         sig::Element *element(&signature.elements[index]);
 799         ffi_type *field(ffi->elements[index]);
 800
 801         JSValueRef rhs;
 802         if (aggregate == NULL)
 803             rhs = value;
 804         else {
 805             rhs = CYGetProperty(context, aggregate, index);
 806             if (JSValueIsUndefined(context, rhs)) {
 807                 if (element->name != NULL)
 808                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 809                 else
 810                     goto undefined;
 811                 if (JSValueIsUndefined(context, rhs)) undefined:
 812                     throw CYJSError(context, "unable to extract structure value");
 813             }
 814         }
 815
 816         element->type->PoolFFI(pool, context, field, base, rhs);
 817         base += field->size;
 818     }
 819 }
 820
 821 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 822     _assert(false);
 823 }
 824
 825 #define CYFromFFI_(Type_) \
 826 template <> \
 827 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 828     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 829 }
 830
 831 CYFromFFI_(bool)
 832 CYFromFFI_(char)
 833 CYFromFFI_(double)
 834 CYFromFFI_(float)
 835 CYFromFFI_(signed char)
 836 CYFromFFI_(signed int)
 837 CYFromFFI_(signed long int)
 838 CYFromFFI_(signed long long int)
 839 CYFromFFI_(signed short int)
 840 CYFromFFI_(unsigned char)
 841 CYFromFFI_(unsigned int)
 842 CYFromFFI_(unsigned long int)
 843 CYFromFFI_(unsigned long long int)
 844 CYFromFFI_(unsigned short int)
 845
 846 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 847     return CYJSUndefined(context);
 848 }
 849
 850 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 851     _assert(false);
 852 }
 853
 854 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 855     if (char *value = *reinterpret_cast<char **>(data))
 856         return CYMakeCString(context, value, owner);
 857     return CYJSNull(context);
 858 }
 859
 860 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 861     _assert(false);
 862 }
 863
 864 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 865     if (void *value = *reinterpret_cast<void **>(data))
 866         return CYMakePointer(context, value, type, NULL, owner);
 867     return CYJSNull(context);
 868 }
 869
 870 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 871     return CYMakeCArray(context, data, size, type, ffi->elements[0], owner);
 872 }
 873
 874 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 875     return CYMakeStruct(context, data, *this, ffi, owner);
 876 }
 877
 878 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 879     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), signature);
 880 }
 881
 882 }
 883
 884 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 885     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 886
 887     JSContextRef context(internal->context_);
 888
 889     size_t count(internal->cif_.nargs);
 890     JSValueRef values[count];
 891
 892     for (size_t index(0); index != count; ++index)
 893         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 894
 895     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 896     if (internal->cif_.rtype != &ffi_type_void)
 897         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 898 }
 899
 900 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 901     return CYCallAsFunction(context, function, NULL, count, values);
 902 }
 903
 904 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 905 static void CYFreeFunctor(void *data) {
 906     ffi_closure_free(data);
 907 }
 908 #else
 909 static void CYFreeFunctor(void *data) {
 910     _syscall(munmap(data, sizeof(ffi_closure)));
 911 }
 912 #endif
 913
 914 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 915     // XXX: in case of exceptions this will leak
 916     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 917
 918 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 919     void *executable;
 920     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 921
 922     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 923     _assert(status == FFI_OK);
 924
 925     internal->pool_->atexit(&CYFreeFunctor, writable);
 926     internal->value_ = executable;
 927 #else
 928     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 929         NULL, sizeof(ffi_closure),
 930         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 931         -1, 0
 932     )));
 933
 934     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 935     _assert(status == FFI_OK);
 936
 937     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 938
 939     internal->pool_->atexit(&CYFreeFunctor, closure);
 940     internal->value_ = closure;
 941 #endif
 942
 943     return internal;
 944 }
 945
 946 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 947     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 948     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 949     // XXX: see above notes about needing to leak
 950     JSValueProtect(CYGetJSContext(context), object);
 951     return object;
 952 }
 953
 954 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 955     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 956 }
 957
 958 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 959     return CYCastJSObject(context, CYGetCachedValue(context, name));
 960 }
 961
 962 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const sig::Signature &signature) {
 963     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 964
 965     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 966     if (function) {
 967         JSObjectRef function(CYCastJSObject(context, value));
 968         return CYMakeFunctor(context, function, signature);
 969     } else {
 970         void (*function)()(CYCastPointer<void (*)()>(context, value));
 971         return CYMakeFunctor(context, function, signature);
 972     }
 973 }
 974
 975 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 976     CYPool pool;
 977     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 978     char *string(static_cast<char *>(internal->value_));
 979
 980     ssize_t offset;
 981     if (!CYGetOffset(pool, context, property, offset))
 982         return NULL;
 983
 984     return CYCastJSValue(context, CYJSString(CYUTF8String(&string[offset], 1)));
 985 } CYCatch(NULL) }
 986
 987 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 988     CYPool pool;
 989     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 990     char *string(static_cast<char *>(internal->value_));
 991
 992     ssize_t offset;
 993     if (!CYGetOffset(pool, context, property, offset))
 994         return false;
 995
 996     const char *data(CYPoolCString(pool, context, value));
 997     string[offset] = *data;
 998     return true;
 999 } CYCatch(false) }
1000
1001 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
1002     Type_privateData *typical(internal->type_);
1003     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1004     if (type == NULL)
1005         return false;
1006
1007     const char *name(CYPoolCString(pool, context, property));
1008     size_t length(strlen(name));
1009     double number(CYCastDouble(name, length));
1010
1011     size_t count(type->signature.count);
1012
1013     if (std::isnan(number)) {
1014         if (property == NULL)
1015             return false;
1016
1017         sig::Element *elements(type->signature.elements);
1018
1019         for (size_t local(0); local != count; ++local) {
1020             sig::Element *element(&elements[local]);
1021             if (element->name != NULL && strcmp(name, element->name) == 0) {
1022                 index = local;
1023                 goto base;
1024             }
1025         }
1026
1027         return false;
1028     } else {
1029         index = static_cast<ssize_t>(number);
1030         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1031             return false;
1032     }
1033
1034   base:
1035     ffi_type **elements(typical->GetFFI()->elements);
1036
1037     size_t offset(0);
1038     for (ssize_t local(0); local != index; ++local) {
1039         offset += elements[local]->size;
1040         CYAlign(offset, elements[local + 1]->alignment);
1041     }
1042
1043     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1044     return true;
1045 }
1046
1047 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1048     ssize_t offset;
1049     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1050         offset = 0;
1051     else if (!CYGetOffset(pool, context, property, offset))
1052         return NULL;
1053     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1054 }
1055
1056 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1057     ffi_type *ffi(typical->GetFFI());
1058     void *base(Offset_(pool, context, property, data, ffi));
1059     if (base == NULL)
1060         return NULL;
1061     return typical->type_->FromFFI(context, ffi, base, false, owner);
1062 }
1063
1064 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1065     ffi_type *ffi(typical->GetFFI());
1066     void *base(Offset_(pool, context, property, data, ffi));
1067     if (base == NULL)
1068         return false;
1069
1070     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1071     return true;
1072 }
1073
1074 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1075     CYPool pool;
1076     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1077     if (JSStringIsEqual(property, length_s))
1078         return CYCastJSValue(context, internal->length_);
1079     Type_privateData *typical(internal->type_);
1080     JSObjectRef owner(internal->GetOwner() ?: object);
1081     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1082 } CYCatch(NULL) }
1083
1084 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1085     CYPool pool;
1086     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1087     Type_privateData *typical(internal->type_);
1088     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1089 } CYCatch(false) }
1090
1091 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1092     CYPool pool;
1093     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1094
1095     Type_privateData *typical(internal->type_);
1096
1097     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1098         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1099             return NULL;
1100         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->signature);
1101     }
1102
1103     JSObjectRef owner(internal->GetOwner() ?: object);
1104     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1105 } CYCatch(NULL) }
1106
1107 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1108     CYPool pool;
1109     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1110     Type_privateData *typical(internal->type_);
1111     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1112 } CYCatch(false) }
1113
1114 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1115     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1116     Type_privateData *typical(internal->type_);
1117     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1118 } CYCatch(NULL) }
1119
1120 static JSValueRef Struct_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1121     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1122     return CYMakeType(context, *internal->type_->type_);
1123 } CYCatch(NULL) }
1124
1125 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1126     CYPool pool;
1127     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1128     Type_privateData *typical(internal->type_);
1129     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1130
1131     ssize_t index;
1132     uint8_t *base;
1133
1134     if (!Index_(pool, context, internal, property, index, base))
1135         return NULL;
1136
1137     JSObjectRef owner(internal->GetOwner() ?: object);
1138
1139     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1140 } CYCatch(NULL) }
1141
1142 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1143     CYPool pool;
1144     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1145     Type_privateData *typical(internal->type_);
1146     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1147
1148     ssize_t index;
1149     uint8_t *base;
1150
1151     if (!Index_(pool, context, internal, property, index, base))
1152         return false;
1153
1154     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1155     return true;
1156 } CYCatch(false) }
1157
1158 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1159     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1160     Type_privateData *typical(internal->type_);
1161     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1162
1163     if (type == NULL)
1164         return;
1165
1166     size_t count(type->signature.count);
1167     sig::Element *elements(type->signature.elements);
1168
1169     char number[32];
1170
1171     for (size_t index(0); index != count; ++index) {
1172         const char *name;
1173         name = elements[index].name;
1174
1175         if (name == NULL) {
1176             sprintf(number, "%zu", index);
1177             name = number;
1178         }
1179
1180         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1181     }
1182 }
1183
1184 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1185     ffi_call(cif, function, value, values);
1186 }
1187
1188 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)()) {
1189     if (setups + count != signature->count - 1)
1190         throw CYJSError(context, "incorrect number of arguments to ffi function");
1191
1192     size_t size(setups + count);
1193     void *values[size];
1194     memcpy(values, setup, sizeof(void *) * setups);
1195
1196     for (size_t index(setups); index != size; ++index) {
1197         sig::Element *element(&signature->elements[index + 1]);
1198         ffi_type *ffi(cif->arg_types[index]);
1199         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1200         element->type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1201     }
1202
1203     uint8_t value[cif->rtype->size];
1204
1205     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1206     // XXX: this only supports one hook, but it is a bad idea anyway
1207     for (CYHook *hook : GetHooks())
1208         if (hook->CallFunction != NULL)
1209             call = hook->CallFunction;
1210
1211     call(pool, context, cif, function, value, values);
1212     return signature->elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1213 }
1214
1215 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1216     CYPool pool;
1217     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1218     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, &internal->signature_, &internal->cif_, internal->GetValue());
1219 } CYCatch(NULL) }
1220
1221 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1222     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1223     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1224         throw CYJSError(context, "cannot call a pointer to non-function");
1225     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1226     return CYCallAsFunction(context, functor, _this, count, arguments);
1227 } CYCatch(NULL) }
1228
1229 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1230     Type_privateData *internal(new Type_privateData(type));
1231     return JSObjectMake(context, Type_privateData::Class_, internal);
1232 }
1233
1234 JSObjectRef CYMakeType(JSContextRef context, sig::Signature *signature) {
1235     CYPool pool;
1236     sig::Function type;
1237     sig::Copy(pool, type.signature, *signature);
1238     return CYMakeType(context, type);
1239 }
1240
1241 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1242     sqlite3_stmt *statement;
1243
1244     _sqlcall(sqlite3_prepare(database_,
1245         "select "
1246             "\"cache\".\"code\", "
1247             "\"cache\".\"flags\" "
1248         "from \"cache\" "
1249         "where"
1250             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1251             " \"cache\".\"name\" = ?"
1252         " limit 1"
1253     , -1, &statement, NULL));
1254
1255     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1256
1257     bool success;
1258     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1259         success = false;
1260     else {
1261         success = true;
1262         code = sqlite3_column_pooled(pool, statement, 0);
1263         flags = sqlite3_column_int(statement, 1);
1264     }
1265
1266     _sqlcall(sqlite3_finalize(statement));
1267     return success;
1268 }
1269
1270 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1271     if (JSStringIsEqualToUTF8CString(property, "errno"))
1272         return true;
1273
1274     JSObjectRef global(CYGetGlobalObject(context));
1275     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1276     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1277
1278     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1279         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1280             if (CYHasProperty(context, space, property))
1281                 return true;
1282
1283     CYPool pool;
1284     const char *code;
1285     unsigned flags;
1286     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1287         return true;
1288
1289     return false;
1290 }
1291
1292 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1293     if (JSStringIsEqualToUTF8CString(property, "errno"))
1294         return CYCastJSValue(context, errno);
1295
1296     JSObjectRef global(CYGetGlobalObject(context));
1297     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1298     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1299
1300     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1301         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1302             if (JSValueRef value = CYGetProperty(context, space, property))
1303                 if (!JSValueIsUndefined(context, value))
1304                     return value;
1305
1306     CYPool pool;
1307     const char *code;
1308     unsigned flags;
1309     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1310         CYUTF8String parsed;
1311
1312         try {
1313             parsed = CYPoolCode(pool, code);
1314         } catch (const CYException &error) {
1315             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1316         }
1317
1318         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1319
1320         if (flags == 0) {
1321             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1322             CYSetProperty(context, cache, property, result);
1323         }
1324
1325         return result;
1326     }
1327
1328     return NULL;
1329 } CYCatch(NULL) }
1330
1331 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1332     _assert(count == 1);
1333     CYPool pool;
1334     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1335
1336     JSObjectRef array(NULL);
1337
1338     {
1339     CYArrayBuilder<1024> values(context, array);
1340
1341     sqlite3_stmt *statement;
1342
1343     if (prefix.size == 0)
1344         _sqlcall(sqlite3_prepare(database_,
1345             "select "
1346                 "\"cache\".\"name\" "
1347             "from \"cache\" "
1348             "where"
1349                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1350         , -1, &statement, NULL));
1351     else {
1352         _sqlcall(sqlite3_prepare(database_,
1353             "select "
1354                 "\"cache\".\"name\" "
1355             "from \"cache\" "
1356             "where"
1357                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1358                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1359         , -1, &statement, NULL));
1360
1361         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1362
1363         char *after(pool.strndup(prefix.data, prefix.size));
1364         ++after[prefix.size - 1];
1365         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1366     }
1367
1368     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1369         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1370
1371     _sqlcall(sqlite3_finalize(statement));
1372     }
1373
1374     return array;
1375 } CYCatch(NULL) }
1376
1377 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1378     JSObjectRef global(CYGetGlobalObject(context));
1379     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1380     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1381
1382     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1383         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1384             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1385             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1386                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1387             JSPropertyNameArrayRelease(subset);
1388         }
1389 }
1390
1391 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1392     _assert(false);
1393 } CYCatch(NULL) }
1394
1395 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1396     _assert(false);
1397 } CYCatch(NULL) }
1398
1399 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1400     _assert(false);
1401 } CYCatch(NULL) }
1402
1403 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1404     CYPool pool;
1405
1406     if (false) {
1407     } else if (count == 1) {
1408         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1409         sig::Signature signature;
1410         sig::Parse(pool, &signature, encoding, &Structor_);
1411         return CYMakeType(context, *signature.elements[0].type);
1412     } else if (count == 2) {
1413         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1414         size_t count(CYArrayLength(context, types));
1415
1416         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1417
1418         sig::Aggregate type(false);
1419         type.signature.elements = new(pool) sig::Element[count];
1420         type.signature.count = count;
1421
1422         for (size_t i(0); i != count; ++i) {
1423             sig::Element &element(type.signature.elements[i]);
1424             element.offset = _not(size_t);
1425
1426             JSValueRef name(CYArrayGet(context, names, i));
1427             if (JSValueIsUndefined(context, name))
1428                 element.name = NULL;
1429             else
1430                 element.name = CYPoolCString(pool, context, name);
1431
1432             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1433             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1434             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1435             element.type = internal->type_;
1436         }
1437
1438         return CYMakeType(context, type);
1439     } else {
1440         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1441     }
1442 } CYCatch(NULL) }
1443
1444 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1445     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1446
1447     CYPool pool;
1448
1449     type.signature.elements = new(pool) sig::Element[1 + count];
1450     type.signature.count = 1 + count;
1451
1452     type.signature.elements[0].name = NULL;
1453     type.signature.elements[0].type = internal->type_;
1454     type.signature.elements[0].offset = _not(size_t);
1455
1456     for (size_t i(0); i != count; ++i) {
1457         sig::Element &element(type.signature.elements[i + 1]);
1458         element.name = NULL;
1459         element.offset = _not(size_t);
1460
1461         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1462         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1463         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1464
1465         element.type = internal->type_;
1466     }
1467
1468     return CYMakeType(context, type);
1469 } CYCatch(NULL) }
1470
1471 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1472     if (count != 1)
1473         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1474     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1475
1476     CYPool pool;
1477     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1478     if (index == _not(size_t))
1479         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1480
1481     sig::Array type(*internal->type_, index);
1482     return CYMakeType(context, type);
1483 } CYCatch(NULL) }
1484
1485 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1486     sig::Block type;
1487     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1488 }
1489
1490 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1491     if (count != 0)
1492         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1493     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1494
1495     CYPool pool;
1496     sig::Type *type(internal->type_->Copy(pool));
1497     type->flags |= JOC_TYPE_CONST;
1498     return CYMakeType(context, *type);
1499 } CYCatch(NULL) }
1500
1501 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1502     sig::Function type;
1503     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1504 }
1505
1506 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1507     if (count != 0)
1508         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1509     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1510
1511     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1512         return CYMakeType(context, sig::String());
1513     else
1514         return CYMakeType(context, sig::Pointer(*internal->type_));
1515 } CYCatch(NULL) }
1516
1517 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1518     if (count != 1)
1519         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1520     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1521
1522     CYPool pool;
1523     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1524 } CYCatch(NULL) }
1525
1526 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1527     if (count != 1)
1528         throw CYJSError(context, "incorrect number of arguments to type cast function");
1529     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1530
1531     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1532         return CYMakeFunctor(context, arguments[0], function->signature);
1533
1534     CYPool pool;
1535     sig::Type *type(internal->type_);
1536     ffi_type *ffi(internal->GetFFI());
1537     void *value(pool.malloc<void>(ffi->size, ffi->alignment));
1538     type->PoolFFI(&pool, context, ffi, value, arguments[0]);
1539     return type->FromFFI(context, ffi, value);
1540 } CYCatch(NULL) }
1541
1542 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1543     if (count != 0)
1544         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1545     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1546
1547     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1548     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1549     ffi_type *ffi(internal->GetFFI());
1550     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1551     memset(value->value_, 0, ffi->size);
1552     return pointer;
1553 } CYCatch(NULL) }
1554
1555 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1556     if (count != 2)
1557         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1558     CYPool pool;
1559     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1560     sig::Signature signature;
1561     sig::Parse(pool, &signature, encoding, &Structor_);
1562     return CYMakeFunctor(context, arguments[0], signature);
1563 } CYCatch(NULL) }
1564
1565 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1566     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1567     JSObjectRef owner(internal->GetOwner() ?: object);
1568     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1569 } CYCatch(NULL) }
1570
1571 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1572     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1573     JSObjectRef owner(internal->GetOwner() ?: object);
1574     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1575 } CYCatch(NULL) }
1576
1577 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1578     CYPool pool;
1579     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1580
1581     sig::Function type;
1582     sig::Copy(pool, type.signature, internal->signature_);
1583
1584     return CYMakePointer(context, internal->value_, type, NULL, NULL);
1585 } CYCatch(NULL) }
1586
1587 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1588     return _this;
1589 } CYCatch(NULL) }
1590
1591 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1592     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1593     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1594 } CYCatch(NULL) }
1595
1596 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1597     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1598 }
1599
1600 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1601     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1602     std::ostringstream str;
1603     Dl_info info;
1604     if (internal->value_ == NULL)
1605         str << "NULL";
1606     else if (dladdr(internal->value_, &info) == 0)
1607         str << internal->value_;
1608     else {
1609         str << info.dli_sname;
1610         off_t offset(static_cast<char *>(internal->value_) - static_cast<char *>(info.dli_saddr));
1611         if (offset != 0)
1612             str << "+0x" << std::hex << offset;
1613     }
1614     std::string value(str.str());
1615     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1616 } CYCatch(NULL) }
1617
1618 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1619     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1620
1621     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1622
1623     try {
1624         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1625         if (!JSValueIsUndefined(context, value)) {
1626             CYPool pool;
1627             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1628         }
1629     } catch (const CYException &e) {
1630         // XXX: it might be interesting to include this error
1631     }
1632
1633     CYLocalPool pool;
1634     std::ostringstream str;
1635
1636     sig::Pointer type(*internal->type_->type_);
1637
1638     CYOptions options;
1639     CYOutput output(*str.rdbuf(), options);
1640     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1641
1642     str << "(" << internal->value_ << ")";
1643     std::string value(str.str());
1644     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1645 } CYCatch(NULL) }
1646
1647 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1648     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1649     char *string(static_cast<char *>(internal->value_));
1650     return CYCastJSValue(context, strlen(string));
1651 } CYCatch(NULL) }
1652
1653 static JSValueRef CString_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1654     return CYMakeType(context, sig::String());
1655 } CYCatch(NULL) }
1656
1657 static JSValueRef CArray_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1658     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1659     sig::Array type(*internal->type_->type_, internal->length_);
1660     return CYMakeType(context, type);
1661 } CYCatch(NULL) }
1662
1663 static JSValueRef Pointer_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1664     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1665     sig::Pointer type(*internal->type_->type_);
1666     return CYMakeType(context, type);
1667 } CYCatch(NULL) }
1668
1669 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1670     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1671     const char *string(static_cast<const char *>(internal->value_));
1672     std::ostringstream str;
1673     if (string == NULL)
1674         str << "NULL";
1675     else {
1676         str << "&";
1677         CYStringify(str, string, strlen(string), true);
1678     }
1679     std::string value(str.str());
1680     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1681 } CYCatch(NULL) }
1682
1683 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1684     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1685     const char *string(static_cast<const char *>(internal->value_));
1686     return CYCastJSValue(context, string);
1687 } CYCatch(NULL) }
1688
1689 static JSValueRef Functor_getProperty_type(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1690     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1691     return CYMakeType(context, &internal->signature_);
1692 } CYCatch(NULL) }
1693
1694 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1695     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1696     return CYCastJSValue(context, internal->GetFFI()->alignment);
1697 } CYCatch(NULL) }
1698
1699 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1700     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1701     return CYCastJSValue(context, internal->type_->GetName());
1702 } CYCatch(NULL) }
1703
1704 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1705     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1706     return CYCastJSValue(context, internal->GetFFI()->size);
1707 } CYCatch(NULL) }
1708
1709 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1710     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1711     CYPool pool;
1712     const char *type(sig::Unparse(pool, internal->type_));
1713     return CYCastJSValue(context, CYJSString(type));
1714 } CYCatch(NULL) }
1715
1716 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1717     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1718     CYLocalPool pool;
1719     std::stringbuf out;
1720     CYOptions options;
1721     CYOutput output(out, options);
1722     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_)))->Output(output, CYNoFlags);
1723     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1724 } CYCatch(NULL) }
1725
1726 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1727     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1728 }
1729
1730 static JSStaticFunction All_staticFunctions[2] = {
1731     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1732     {NULL, NULL, 0}
1733 };
1734
1735 static JSStaticFunction CArray_staticFunctions[4] = {
1736     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1737     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1738     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1739     {NULL, NULL, 0}
1740 };
1741
1742 static JSStaticValue CArray_staticValues[2] = {
1743     {"type", &CArray_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1744     {NULL, NULL, NULL, 0}
1745 };
1746
1747 static JSStaticFunction CString_staticFunctions[6] = {
1748     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1749     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1750     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1751     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1752     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1753     {NULL, NULL, 0}
1754 };
1755
1756 static JSStaticValue CString_staticValues[3] = {
1757     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1758     {"type", &CString_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1759     {NULL, NULL, NULL, 0}
1760 };
1761
1762 static JSStaticFunction Pointer_staticFunctions[5] = {
1763     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1764     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1765     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1766     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1767     {NULL, NULL, 0}
1768 };
1769
1770 static JSStaticValue Pointer_staticValues[2] = {
1771     {"type", &Pointer_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1772     {NULL, NULL, NULL, 0}
1773 };
1774
1775 static JSStaticFunction Struct_staticFunctions[2] = {
1776     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1777     {NULL, NULL, 0}
1778 };
1779
1780 static JSStaticValue Struct_staticValues[2] = {
1781     {"type", &Struct_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1782     {NULL, NULL, NULL, 0}
1783 };
1784
1785 static JSStaticFunction Functor_staticFunctions[5] = {
1786     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1787     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1788     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1789     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1790     {NULL, NULL, 0}
1791 };
1792
1793 namespace cy {
1794     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1795 }
1796
1797 static JSStaticValue Functor_staticValues[2] = {
1798     {"type", &Functor_getProperty_type, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1799     {NULL, NULL, NULL, 0}
1800 };
1801
1802 namespace cy {
1803     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1804 }
1805
1806 static JSStaticValue Type_staticValues[4] = {
1807     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1808     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1809     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1810     {NULL, NULL, NULL, 0}
1811 };
1812
1813 static JSStaticFunction Type_staticFunctions[10] = {
1814     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1815     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1816     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1817     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1818     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1819     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1820     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1821     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1822     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1823     {NULL, NULL, 0}
1824 };
1825
1826 _visible void CYSetArgs(int argc, const char *argv[]) {
1827     JSContextRef context(CYGetJSContext());
1828     JSValueRef args[argc];
1829     for (int i(0); i != argc; ++i)
1830         args[i] = CYCastJSValue(context, argv[i]);
1831
1832     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1833     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1834     CYSetProperty(context, System, CYJSString("args"), array);
1835 }
1836
1837 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1838     return JSContextGetGlobalObject(context);
1839 }
1840
1841 // XXX: this is neither exceptin safe nor even terribly sane
1842 class ExecutionHandle {
1843   private:
1844     JSContextRef context_;
1845     std::vector<void *> handles_;
1846
1847   public:
1848     ExecutionHandle(JSContextRef context) :
1849         context_(context)
1850     {
1851         handles_.resize(GetHooks().size());
1852         for (size_t i(0); i != GetHooks().size(); ++i) {
1853             CYHook *hook(GetHooks()[i]);
1854             if (hook->ExecuteStart != NULL)
1855                 handles_[i] = (*hook->ExecuteStart)(context_);
1856             else
1857                 handles_[i] = NULL;
1858         }
1859     }
1860
1861     ~ExecutionHandle() {
1862         for (size_t i(GetHooks().size()); i != 0; --i) {
1863             CYHook *hook(GetHooks()[i-1]);
1864             if (hook->ExecuteEnd != NULL)
1865                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1866         }
1867     }
1868 };
1869
1870 static volatile bool cancel_;
1871
1872 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1873     return cancel_;
1874 }
1875
1876 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1877     ExecutionHandle handle(context);
1878
1879     cancel_ = false;
1880     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1881         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1882
1883     try {
1884         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1885         if (JSValueIsUndefined(context, result))
1886             return NULL;
1887
1888         std::set<void *> objects;
1889         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1890         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1891
1892         return json;
1893     } catch (const CYException &error) {
1894         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1895     }
1896 }
1897
1898 _visible void CYCancel() {
1899     cancel_ = true;
1900 }
1901
1902 static const char *CYPoolLibraryPath(CYPool &pool);
1903
1904 static bool initialized_ = false;
1905
1906 void CYInitializeDynamic() {
1907     if (!initialized_)
1908         initialized_ = true;
1909     else return;
1910
1911     CYPool pool;
1912     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1913     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1914
1915     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1916     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1917
1918     JSClassDefinition definition;
1919
1920     definition = kJSClassDefinitionEmpty;
1921     definition.className = "All";
1922     definition.staticFunctions = All_staticFunctions;
1923     definition.hasProperty = &All_hasProperty;
1924     definition.getProperty = &All_getProperty;
1925     definition.getPropertyNames = &All_getPropertyNames;
1926     All_ = JSClassCreate(&definition);
1927
1928     definition = kJSClassDefinitionEmpty;
1929     definition.className = "Context";
1930     definition.finalize = &CYFinalize;
1931     Context_ = JSClassCreate(&definition);
1932
1933     definition = kJSClassDefinitionEmpty;
1934     definition.className = "CArray";
1935     definition.staticFunctions = CArray_staticFunctions;
1936     definition.staticValues = CArray_staticValues;
1937     definition.getProperty = &CArray_getProperty;
1938     definition.setProperty = &CArray_setProperty;
1939     definition.finalize = &CYFinalize;
1940     CArray_ = JSClassCreate(&definition);
1941
1942     definition = kJSClassDefinitionEmpty;
1943     definition.className = "CString";
1944     definition.staticFunctions = CString_staticFunctions;
1945     definition.staticValues = CString_staticValues;
1946     definition.getProperty = &CString_getProperty;
1947     definition.setProperty = &CString_setProperty;
1948     definition.finalize = &CYFinalize;
1949     CString_ = JSClassCreate(&definition);
1950
1951     definition = kJSClassDefinitionEmpty;
1952     definition.className = "Functor";
1953     definition.staticFunctions = cy::Functor::StaticFunctions;
1954     definition.staticValues = Functor_staticValues;
1955     definition.callAsFunction = &Functor_callAsFunction;
1956     definition.finalize = &CYFinalize;
1957     Functor_ = JSClassCreate(&definition);
1958
1959     definition = kJSClassDefinitionEmpty;
1960     definition.className = "Pointer";
1961     definition.staticFunctions = Pointer_staticFunctions;
1962     definition.staticValues = Pointer_staticValues;
1963     definition.callAsFunction = &Pointer_callAsFunction;
1964     definition.getProperty = &Pointer_getProperty;
1965     definition.setProperty = &Pointer_setProperty;
1966     definition.finalize = &CYFinalize;
1967     Pointer_ = JSClassCreate(&definition);
1968
1969     definition = kJSClassDefinitionEmpty;
1970     definition.className = "Struct";
1971     definition.staticFunctions = Struct_staticFunctions;
1972     definition.staticValues = Struct_staticValues;
1973     definition.getProperty = &Struct_getProperty;
1974     definition.setProperty = &Struct_setProperty;
1975     definition.getPropertyNames = &Struct_getPropertyNames;
1976     definition.finalize = &CYFinalize;
1977     Struct_ = JSClassCreate(&definition);
1978
1979     definition = kJSClassDefinitionEmpty;
1980     definition.className = "Type";
1981     definition.staticValues = Type_staticValues;
1982     definition.staticFunctions = Type_staticFunctions;
1983     definition.callAsFunction = &Type_callAsFunction;
1984     definition.callAsConstructor = &Type_callAsConstructor;
1985     definition.finalize = &CYFinalize;
1986     Type_privateData::Class_ = JSClassCreate(&definition);
1987
1988     definition = kJSClassDefinitionEmpty;
1989     definition.className = "Global";
1990     //definition.getProperty = &Global_getProperty;
1991     Global_ = JSClassCreate(&definition);
1992
1993     Array_s = JSStringCreateWithUTF8CString("Array");
1994     cy_s = JSStringCreateWithUTF8CString("$cy");
1995     cyi_s = JSStringCreateWithUTF8CString("$cyi");
1996     length_s = JSStringCreateWithUTF8CString("length");
1997     message_s = JSStringCreateWithUTF8CString("message");
1998     name_s = JSStringCreateWithUTF8CString("name");
1999     pop_s = JSStringCreateWithUTF8CString("pop");
2000     prototype_s = JSStringCreateWithUTF8CString("prototype");
2001     push_s = JSStringCreateWithUTF8CString("push");
2002     splice_s = JSStringCreateWithUTF8CString("splice");
2003     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2004     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2005     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2006     toString_s = JSStringCreateWithUTF8CString("toString");
2007     weak_s = JSStringCreateWithUTF8CString("weak");
2008
2009     Result_ = JSStringCreateWithUTF8CString("_");
2010
2011     for (CYHook *hook : GetHooks())
2012         if (hook->Initialize != NULL)
2013             (*hook->Initialize)();
2014 }
2015
2016 void CYThrow(JSContextRef context, JSValueRef value) {
2017     if (value != NULL)
2018         throw CYJSError(context, value);
2019 }
2020
2021 const char *CYJSError::PoolCString(CYPool &pool) const {
2022     std::set<void *> objects;
2023     // XXX: this used to be CYPoolCString
2024     return CYPoolCCYON(pool, context_, value_, objects);
2025 }
2026
2027 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2028     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2029     return value_;
2030 }
2031
2032 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2033     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2034     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2035     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2036 }
2037
2038 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2039     return CYCastJSError(context, name, message_);
2040 }
2041
2042 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2043     _assert(context != NULL);
2044
2045     CYPool pool;
2046
2047     va_list args;
2048     va_start(args, format);
2049     // XXX: there might be a beter way to think about this
2050     const char *message(pool.vsprintf(64, format, args));
2051     va_end(args);
2052
2053     value_ = CYCastJSError(context, "Error", message);
2054 }
2055
2056 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2057     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2058 }
2059
2060 static const char *CYPoolLibraryPath(CYPool &pool) {
2061     Dl_info addr;
2062     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2063     char *lib(pool.strdup(addr.dli_fname));
2064
2065     char *slash(strrchr(lib, '/'));
2066     _assert(slash != NULL);
2067     *slash = '\0';
2068
2069     slash = strrchr(lib, '/');
2070     if (slash != NULL && strcmp(slash, "/.libs") == 0)
2071         *slash = '\0';
2072
2073     return lib;
2074 }
2075
2076 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2077     _assert(count == 1);
2078     CYPool pool;
2079
2080     const char *name(CYPoolCString(pool, context, arguments[0]));
2081     if (strchr(name, '/') == NULL && (
2082 #ifdef __APPLE__
2083         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2084         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2085 #endif
2086     false))
2087         return CYJSUndefined(context);
2088
2089     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2090     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2091
2092     CYJSString property("exports");
2093
2094     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2095     JSValueRef cache(CYGetProperty(context, modules, path));
2096
2097     JSValueRef result;
2098     if (!JSValueIsUndefined(context, cache)) {
2099         JSObjectRef module(CYCastJSObject(context, cache));
2100         result = CYGetProperty(context, module, property);
2101     } else {
2102         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2103         _assert(code.data != NULL);
2104
2105         size_t length(strlen(name));
2106         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2107             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2108             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2109             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2110             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2111         } else {
2112             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2113             CYSetProperty(context, modules, path, module);
2114
2115             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2116             CYSetProperty(context, module, property, exports);
2117
2118             std::stringstream wrap;
2119             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2120             code = CYPoolCode(pool, *wrap.rdbuf());
2121
2122             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2123             JSObjectRef function(CYCastJSObject(context, value));
2124
2125             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2126             CYCallAsFunction(context, function, NULL, 4, arguments);
2127             result = CYGetProperty(context, module, property);
2128         }
2129     }
2130
2131     return result;
2132 } CYCatch(NULL) }
2133
2134 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2135     CYPool pool;
2136     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2137     if (code.data == NULL)
2138         return false;
2139
2140     code = CYPoolCode(pool, code);
2141     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2142     return true;
2143 }
2144
2145 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2146 }
2147
2148 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2149     CYInitializeDynamic();
2150
2151     JSObjectRef global(CYGetGlobalObject(context));
2152
2153     JSObjectRef cy(JSObjectMake(context, Context_, new Context(context)));
2154     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2155
2156 /* Cache Globals {{{ */
2157     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2158     CYSetProperty(context, cy, CYJSString("Array"), Array);
2159
2160     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2161     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2162
2163     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2164     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2165
2166     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2167     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2168
2169     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2170     CYSetProperty(context, cy, CYJSString("Error"), Error);
2171
2172     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2173     CYSetProperty(context, cy, CYJSString("Function"), Function);
2174
2175     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2176     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2177
2178     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2179     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2180
2181     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2182     CYSetProperty(context, cy, CYJSString("Number"), Number);
2183
2184     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2185     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2186
2187     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2188     CYSetProperty(context, cy, CYJSString("Object"), Object);
2189
2190     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2191     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2192
2193     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2194     CYSetProperty(context, cy, CYJSString("String"), String);
2195
2196     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2197     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2198
2199     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2200     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2201 /* }}} */
2202
2203     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2204     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2205
2206     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2207     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2208     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2209     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2210
2211     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray_, &CArray_new));
2212     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2213     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2214
2215     JSObjectRef CString(JSObjectMakeConstructor(context, CString_, &CString_new));
2216     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2217     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2218
2219     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2220     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2221     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2222
2223     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
2224     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2225
2226     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2227     CYSetProperty(context, cy, CYJSString("modules"), modules);
2228
2229     JSObjectRef all(JSObjectMake(context, All_, NULL));
2230     CYSetProperty(context, cycript, CYJSString("all"), all);
2231
2232     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2233     CYSetProperty(context, cy, CYJSString("cache"), cache);
2234     CYSetPrototype(context, cache, all);
2235
2236     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2237     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2238
2239     if (true) {
2240         JSObjectRef last(NULL), curr(global);
2241
2242         goto next; for (JSValueRef next;;) {
2243             if (JSValueIsNull(context, next))
2244                 break;
2245             last = curr;
2246             curr = CYCastJSObject(context, next);
2247           next:
2248             next = JSObjectGetPrototype(context, curr);
2249         }
2250
2251         CYSetPrototype(context, last, cache);
2252     }
2253
2254     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2255     CYSetProperty(context, cy, CYJSString("System"), System);
2256
2257     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2258
2259     CYSetProperty(context, global, CYJSString("system"), System);
2260     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2261     CYSetProperty(context, System, CYJSString("print"), &System_print);
2262
2263     CYSetProperty(context, global, CYJSString("global"), global);
2264
2265 #ifdef __APPLE__
2266     if (&JSWeakObjectMapCreate != NULL) {
2267         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2268         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2269     }
2270 #endif
2271
2272     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2273     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2274     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2275
2276     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2277
2278     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2279     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2280     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2281     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2282
2283     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2284     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2285     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2286     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2287
2288     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2289     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2290     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2291     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2292
2293     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2294     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2295
2296     for (CYHook *hook : GetHooks())
2297         if (hook->SetupContext != NULL)
2298             (*hook->SetupContext)(context);
2299
2300     CYArrayPush(context, alls, cycript);
2301
2302     CYRunScript(context, "/libcycript.cy");
2303 }
2304
2305 static JSGlobalContextRef context_;
2306
2307 _visible JSGlobalContextRef CYGetJSContext() {
2308     CYInitializeDynamic();
2309
2310     if (context_ == NULL) {
2311         context_ = JSGlobalContextCreate(Global_);
2312         CYSetupContext(context_);
2313     }
2314
2315     return context_;
2316 }
2317
2318 _visible void CYDestroyContext() {
2319     if (context_ == NULL)
2320         return;
2321     JSGlobalContextRelease(context_);
2322     context_ = NULL;
2323 }