Execute.cpp

   1 /* Cycript - The Truly Universal Scripting Language
   2  * Copyright (C) 2009-2016  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 JSObjectRef CYGetPrototype(JSContextRef context, JSObjectRef object) {
  98     return CYCastJSObject(context, JSObjectGetPrototype(context, object));
  99 }
 100
 101 void CYSetPrototype(JSContextRef context, JSObjectRef object, JSValueRef value) {
 102     _assert(!JSValueIsUndefined(context, value));
 103     JSObjectSetPrototype(context, object, value);
 104     _assert(CYIsStrictEqual(context, JSObjectGetPrototype(context, object), value));
 105 }
 106 /* }}} */
 107 /* JavaScript Strings {{{ */
 108 JSStringRef CYCopyJSString(const char *value) {
 109     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 110 }
 111
 112 JSStringRef CYCopyJSString(JSStringRef value) {
 113     return value == NULL ? NULL : JSStringRetain(value);
 114 }
 115
 116 JSStringRef CYCopyJSString(CYUTF8String value) {
 117     if (memchr(value.data, '\0', value.size) != NULL) {
 118         CYPool pool;
 119         return CYCopyJSString(CYPoolUTF16String(pool, value));
 120     } else if (value.data[value.size] != '\0') {
 121         CYPool pool;
 122         return CYCopyJSString(pool.strmemdup(value.data, value.size));
 123     } else {
 124         return CYCopyJSString(value.data);
 125     }
 126 }
 127
 128 JSStringRef CYCopyJSString(const std::string &value) {
 129     return CYCopyJSString(CYUTF8String(value.c_str(), value.size()));
 130 }
 131
 132 JSStringRef CYCopyJSString(CYUTF16String value) {
 133     return JSStringCreateWithCharacters(value.data, value.size);
 134 }
 135
 136 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 137     if (JSValueIsNull(context, value))
 138         return NULL;
 139     return _jsccall(JSValueToStringCopy, context, value);
 140 }
 141
 142 CYUTF16String CYCastUTF16String(JSStringRef value) {
 143     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 144 }
 145
 146 const char *CYPoolCString(CYPool &pool, CYUTF8String utf8) {
 147     return pool.strndup(utf8.data, utf8.size);
 148 }
 149
 150 CYUTF8String CYPoolUTF8String(CYPool &pool, JSContextRef context, JSStringRef value) {
 151     return CYPoolUTF8String(pool, CYCastUTF16String(value));
 152 }
 153
 154 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSStringRef value) {
 155     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 156     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 157     return utf8.data;
 158 }
 159
 160 const char *CYPoolCString(CYPool &pool, JSContextRef context, JSValueRef value) {
 161     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 162 }
 163 /* }}} */
 164 /* Index Offsets {{{ */
 165 size_t CYGetIndex(CYPool &pool, JSContextRef context, JSStringRef value) {
 166     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 167 }
 168 /* }}} */
 169
 170 static JSObjectRef (*JSObjectMakeArray$)(JSContextRef, size_t, const JSValueRef[], JSValueRef *);
 171
 172 JSObjectRef CYObjectMakeArray(JSContextRef context, size_t length, const JSValueRef values[]) {
 173     if (JSObjectMakeArray$ != NULL)
 174         return _jsccall(*JSObjectMakeArray$, context, length, values);
 175     else {
 176         JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array")));
 177         JSValueRef value(CYCallAsFunction(context, Array, NULL, length, values));
 178         return CYCastJSObject(context, value);
 179     }
 180 }
 181
 182 static JSClassRef All_;
 183 JSClassRef Functor_;
 184 static JSClassRef Global_;
 185
 186 JSStringRef Array_s;
 187 JSStringRef constructor_s;
 188 JSStringRef cy_s;
 189 JSStringRef cyi_s;
 190 JSStringRef cyt_s;
 191 JSStringRef length_s;
 192 JSStringRef message_s;
 193 JSStringRef name_s;
 194 JSStringRef pop_s;
 195 JSStringRef prototype_s;
 196 JSStringRef push_s;
 197 JSStringRef splice_s;
 198 JSStringRef toCYON_s;
 199 JSStringRef toJSON_s;
 200 JSStringRef toPointer_s;
 201 JSStringRef toString_s;
 202 JSStringRef weak_s;
 203
 204 static sqlite3 *database_;
 205
 206 static JSStringRef Result_;
 207
 208 void CYFinalize(JSObjectRef object) {
 209     CYData *internal(reinterpret_cast<CYData *>(JSObjectGetPrivate(object)));
 210     _assert(internal->count_ != _not(unsigned));
 211     if (--internal->count_ == 0)
 212         delete internal;
 213 }
 214
 215 sig::Type *Structor_(CYPool &pool, sig::Aggregate *aggregate) {
 216     //_assert(false);
 217     return aggregate;
 218 }
 219
 220 struct Context :
 221     CYPrivate<Context>
 222 {
 223     JSGlobalContextRef context_;
 224
 225     Context(JSGlobalContextRef context) :
 226         context_(context)
 227     {
 228     }
 229 };
 230
 231 struct CArray :
 232     CYValue<CArray, void *>
 233 {
 234     CYProtect owner_;
 235     Type_privateData *type_;
 236     size_t length_;
 237
 238     CArray(void *value, size_t length, const sig::Type &type, ffi_type *ffi, JSContextRef context, JSObjectRef owner) :
 239         CYValue(value),
 240         owner_(context, owner),
 241         type_(new(*pool_) Type_privateData(type, ffi)),
 242         length_(length)
 243     {
 244         if (owner == NULL) {
 245             size_t size(ffi->size * length);
 246             void *copy(pool_->malloc<void>(size, ffi->alignment));
 247             memcpy(copy, value_, size);
 248             value_ = copy;
 249         }
 250     }
 251 };
 252
 253 struct CString :
 254     CYValue<CString, char *>
 255 {
 256     CYProtect owner_;
 257
 258     CString(char *value, JSContextRef context, JSObjectRef owner) :
 259         CYValue(value),
 260         owner_(context, owner)
 261     {
 262         if (owner == NULL)
 263             value_ = pool_->strdup(value_);
 264     }
 265 };
 266
 267 struct Pointer :
 268     CYValue<Pointer, void *>
 269 {
 270     CYProtect owner_;
 271     Type_privateData *type_;
 272
 273     Pointer(void *value, const sig::Type &type, JSContextRef context, JSObjectRef owner) :
 274         CYValue(value),
 275         owner_(context, owner),
 276         type_(new(*pool_) Type_privateData(type))
 277     {
 278     }
 279
 280     Pointer(void *value, const char *encoding, JSContextRef context, JSObjectRef owner) :
 281         CYValue(value),
 282         owner_(context, owner),
 283         type_(new(*pool_) Type_privateData(encoding))
 284     {
 285     }
 286 };
 287
 288 struct Struct_privateData :
 289     CYValue<Struct_privateData, void *>
 290 {
 291     CYProtect owner_;
 292     Type_privateData *type_;
 293
 294     Struct_privateData(void *value, const sig::Type &type, ffi_type *ffi, JSContextRef context, JSObjectRef owner) :
 295         CYValue(value),
 296         owner_(context, owner),
 297         type_(new(*pool_) Type_privateData(type, ffi))
 298     {
 299         if (owner == NULL) {
 300             size_t size(ffi->size);
 301             void *copy(pool_->malloc<void>(size, ffi->alignment));
 302             memcpy(copy, value_, size);
 303             value_ = copy;
 304         }
 305     }
 306 };
 307
 308 static void *CYCastSymbol(const char *name) {
 309     for (CYHook *hook : GetHooks())
 310         if (hook->CastSymbol != NULL)
 311             if (void *value = (*hook->CastSymbol)(name))
 312                 return value;
 313     return dlsym(RTLD_DEFAULT, name);
 314 }
 315
 316 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 317     return JSValueMakeBoolean(context, value);
 318 }
 319
 320 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 321     return JSValueMakeNumber(context, value);
 322 }
 323
 324 #define CYCastJSValue_(Type_) \
 325     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 326         _assert(static_cast<Type_>(static_cast<double>(value)) == value); \
 327         return JSValueMakeNumber(context, static_cast<double>(value)); \
 328     }
 329
 330 CYCastJSValue_(signed short int)
 331 CYCastJSValue_(unsigned short int)
 332 CYCastJSValue_(signed int)
 333 CYCastJSValue_(unsigned int)
 334 CYCastJSValue_(signed long int)
 335 CYCastJSValue_(unsigned long int)
 336 CYCastJSValue_(signed long long int)
 337 CYCastJSValue_(unsigned long long int)
 338
 339 #ifdef __SIZEOF_INT128__
 340 CYCastJSValue_(signed __int128)
 341 CYCastJSValue_(unsigned __int128)
 342 #endif
 343
 344 JSValueRef CYJSUndefined(JSContextRef context) {
 345     return JSValueMakeUndefined(context);
 346 }
 347
 348 double CYCastDouble(JSContextRef context, JSValueRef value) {
 349     return _jsccall(JSValueToNumber, context, value);
 350 }
 351
 352 bool CYCastBool(JSContextRef context, JSValueRef value) {
 353     return JSValueToBoolean(context, value);
 354 }
 355
 356 JSValueRef CYJSNull(JSContextRef context) {
 357     return JSValueMakeNull(context);
 358 }
 359
 360 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 361     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 362 }
 363
 364 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 365     return CYCastJSValue(context, CYJSString(value));
 366 }
 367
 368 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 369     return _jsccall(JSValueToObject, context, value);
 370 }
 371
 372 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 373     return _jsccall(JSObjectCallAsFunction, context, function, _this, count, arguments);
 374 }
 375
 376 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 377     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 378 }
 379
 380 bool CYIsEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 381     return _jsccall(JSValueIsEqual, context, lhs, rhs);
 382 }
 383
 384 bool CYIsStrictEqual(JSContextRef context, JSValueRef lhs, JSValueRef rhs) {
 385     return JSValueIsStrictEqual(context, lhs, rhs);
 386 }
 387
 388 size_t CYArrayLength(JSContextRef context, JSObjectRef array) {
 389     return CYCastDouble(context, CYGetProperty(context, array, length_s));
 390 }
 391
 392 JSValueRef CYArrayGet(JSContextRef context, JSObjectRef array, size_t index) {
 393     return _jsccall(JSObjectGetPropertyAtIndex, context, array, index);
 394 }
 395
 396 void CYArrayPush(JSContextRef context, JSObjectRef array, size_t length, const JSValueRef arguments[]) {
 397     JSObjectRef Array(CYGetCachedObject(context, CYJSString("Array_prototype")));
 398     _jsccall(JSObjectCallAsFunction, context, CYCastJSObject(context, CYGetProperty(context, Array, push_s)), array, length, arguments);
 399 }
 400
 401 void CYArrayPush(JSContextRef context, JSObjectRef array, JSValueRef value) {
 402     return CYArrayPush(context, array, 1, &value);
 403 }
 404
 405 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 406     FILE *file(stdout);
 407
 408     if (count == 0)
 409         fputc('\n', file);
 410     else {
 411         CYPool pool;
 412         CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 413         fwrite(string.data, string.size, 1, file);
 414     }
 415
 416     fflush(file);
 417     return CYJSUndefined(context);
 418 } CYCatch(NULL) }
 419
 420 static void (*JSSynchronousGarbageCollectForDebugging$)(JSContextRef);
 421
 422 _visible void CYGarbageCollect(JSContextRef context) {
 423     (JSSynchronousGarbageCollectForDebugging$ ?: &JSGarbageCollect)(context);
 424 }
 425
 426 static JSValueRef Cycript_compile_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 427     CYPool pool;
 428     CYUTF8String before(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
 429     CYUTF8String after(CYPoolCode(pool, before));
 430     return CYCastJSValue(context, CYJSString(after));
 431 } CYCatch_(NULL, "SyntaxError") }
 432
 433 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 434     CYGarbageCollect(context);
 435     return CYJSUndefined(context);
 436 } CYCatch(NULL) }
 437
 438 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects, JSValueRef *exception) { CYTry {
 439     switch (JSType type = JSValueGetType(context, value)) {
 440         case kJSTypeUndefined:
 441             return "undefined";
 442         case kJSTypeNull:
 443             return "null";
 444         case kJSTypeBoolean:
 445             return CYCastBool(context, value) ? "true" : "false";
 446
 447         case kJSTypeNumber: {
 448             std::ostringstream str;
 449             CYNumerify(str, CYCastDouble(context, value));
 450             std::string value(str.str());
 451             return pool.strmemdup(value.c_str(), value.size());
 452         } break;
 453
 454         case kJSTypeString: {
 455             std::ostringstream str;
 456             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 457             CYStringify(str, string.data, string.size);
 458             std::string value(str.str());
 459             return pool.strmemdup(value.c_str(), value.size());
 460         } break;
 461
 462         case kJSTypeObject:
 463             return CYPoolCCYON(pool, context, (JSObjectRef) value, objects);
 464         default:
 465             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 466     }
 467 } CYCatch(NULL) }
 468
 469 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> &objects) {
 470     return _jsccall(CYPoolCCYON, pool, context, value, objects);
 471 }
 472
 473 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSValueRef value, std::set<void *> *objects) {
 474     if (objects != NULL)
 475         return CYPoolCCYON(pool, context, value, *objects);
 476     else {
 477         std::set<void *> objects;
 478         return CYPoolCCYON(pool, context, value, objects);
 479     }
 480 }
 481
 482 const char *CYPoolCCYON(CYPool &pool, JSContextRef context, JSObjectRef object, std::set<void *> &objects) {
 483     JSValueRef toCYON(CYGetProperty(context, object, toCYON_s));
 484     if (CYIsCallable(context, toCYON)) {
 485         // XXX: this needs to be abstracted behind some kind of function
 486         JSValueRef arguments[1] = {CYCastJSValue(context, reinterpret_cast<uintptr_t>(&objects))};
 487         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 1, arguments));
 488         _assert(value != NULL);
 489         return CYPoolCString(pool, context, value);
 490     }
 491
 492     JSValueRef toJSON(CYGetProperty(context, object, toJSON_s));
 493     if (CYIsCallable(context, toJSON)) {
 494         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 495         return _jsccall(CYPoolCCYON, pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), objects);
 496     }
 497
 498     if (JSObjectIsFunction(context, object)) {
 499         JSValueRef toString(CYGetProperty(context, object, toString_s));
 500         if (CYIsCallable(context, toString)) {
 501             JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 502             JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toString, object, 1, arguments));
 503             _assert(value != NULL);
 504             return CYPoolCString(pool, context, value);
 505         }
 506     }
 507
 508     _assert(objects.insert(object).second);
 509
 510     std::ostringstream str;
 511
 512     JSValueRef value(CYGetProperty(context, object, constructor_s));
 513     if (JSValueIsObject(context, value)) {
 514         JSObjectRef constructor(CYCastJSObject(context, value));
 515         JSValueRef theory(CYGetProperty(context, constructor, prototype_s));
 516         JSValueRef practice(JSObjectGetPrototype(context, object));
 517
 518         if (CYIsStrictEqual(context, theory, practice)) {
 519             JSValueRef name(CYGetProperty(context, constructor, name_s));
 520             if (!JSValueIsUndefined(context, name))
 521                 str << "new" << ' ' << CYPoolUTF8String(pool, context, CYJSString(context, name));
 522         }
 523     }
 524
 525     str << '{';
 526
 527     // XXX: this is, sadly, going to leak
 528     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 529
 530     bool comma(false);
 531
 532     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 533         if (comma)
 534             str << ',';
 535         else
 536             comma = true;
 537
 538         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 539         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 540
 541         if (CYIsKey(string))
 542             str << string.data;
 543         else
 544             CYStringify(str, string.data, string.size);
 545
 546         str << ':';
 547
 548         try {
 549             JSValueRef value(CYGetProperty(context, object, name));
 550             str << CYPoolCCYON(pool, context, value, objects);
 551         } catch (const CYException &error) {
 552             str << "@error";
 553         }
 554     }
 555
 556     JSPropertyNameArrayRelease(names);
 557
 558     str << '}';
 559
 560     std::string string(str.str());
 561     return pool.strmemdup(string.c_str(), string.size());
 562 }
 563
 564 std::set<void *> *CYCastObjects(JSContextRef context, JSObjectRef _this, size_t count, const JSValueRef arguments[]) {
 565     if (count == 0)
 566         return NULL;
 567     return CYCastPointer<std::set<void *> *>(context, arguments[0]);
 568 }
 569
 570 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 571     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
 572     // XXX: this is horribly inefficient
 573     std::set<void *> backup;
 574     if (objects == NULL)
 575         objects = &backup;
 576
 577     CYPool pool;
 578     std::ostringstream str;
 579
 580     str << '[';
 581
 582     JSValueRef length(CYGetProperty(context, _this, length_s));
 583     bool comma(false);
 584
 585     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 586         if (comma)
 587             str << ',';
 588         else
 589             comma = true;
 590
 591         try {
 592             JSValueRef value(CYGetProperty(context, _this, index));
 593             if (!JSValueIsUndefined(context, value))
 594                 str << CYPoolCCYON(pool, context, value, *objects);
 595             else {
 596                 str << ',';
 597                 comma = false;
 598             }
 599         } catch (const CYException &error) {
 600             str << "@error";
 601         }
 602     }
 603
 604     str << ']';
 605
 606     std::string value(str.str());
 607     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 608 } CYCatch(NULL) }
 609
 610 static JSValueRef String_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 611     CYPool pool;
 612     std::ostringstream str;
 613
 614     CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, _this)));
 615     CYStringify(str, string.data, string.size);
 616
 617     std::string value(str.str());
 618     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 619 } CYCatch(NULL) }
 620
 621 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, const sig::Type &type, ffi_type *ffi, JSObjectRef owner) {
 622     return Pointer::Make(context, pointer, type, context, owner);
 623 }
 624
 625 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), bool variadic, const sig::Signature &signature) {
 626     return JSObjectMake(context, Functor_, new cy::Functor(function, variadic, signature));
 627 }
 628
 629 static JSObjectRef CYMakeFunctor(JSContextRef context, const char *symbol, const char *encoding) {
 630     void (*function)()(reinterpret_cast<void (*)()>(CYCastSymbol(symbol)));
 631     if (function == NULL)
 632         return NULL;
 633
 634     cy::Functor *internal(new cy::Functor(function, encoding));
 635     ++internal->count_;
 636     return JSObjectMake(context, Functor_, internal);
 637 }
 638
 639 bool CYGetOffset(CYPool &pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 640     return CYGetOffset(CYPoolCString(pool, context, value), index);
 641 }
 642
 643 void *CYCastPointer_(JSContextRef context, JSValueRef value, bool *guess) {
 644     if (value == NULL)
 645         return NULL;
 646     else switch (JSValueGetType(context, value)) {
 647         case kJSTypeNull:
 648             return NULL;
 649         case kJSTypeObject: {
 650             JSObjectRef object((JSObjectRef) value);
 651             if (JSValueIsObjectOfClass(context, value, Pointer::Class_)) {
 652                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 653                 return internal->value_;
 654             }
 655             JSValueRef toPointer(CYGetProperty(context, object, toPointer_s));
 656             if (CYIsCallable(context, toPointer)) {
 657                 JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toPointer, object, 0, NULL));
 658                 _assert(value != NULL);
 659                 return CYCastPointer_(context, value, guess);
 660             }
 661         } default:
 662             if (guess != NULL)
 663                 *guess = true;
 664         case kJSTypeNumber:
 665             double number(CYCastDouble(context, value));
 666             if (!std::isnan(number))
 667                 return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 668             if (guess == NULL)
 669                 throw CYJSError(context, "cannot convert value to pointer");
 670             else {
 671                 *guess = true;
 672                 return NULL;
 673             }
 674     }
 675 }
 676
 677 namespace sig {
 678
 679 // XXX: this is somehow not quite a template :/
 680
 681 template <>
 682 void Primitive<bool>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 683     *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 684 }
 685
 686 #define CYPoolFFI_(Type_) \
 687 template <> \
 688 void Primitive<Type_>::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const { \
 689     *reinterpret_cast<Type_ *>(data) = CYCastDouble(context, value); \
 690 }
 691
 692 CYPoolFFI_(char)
 693 CYPoolFFI_(double)
 694 CYPoolFFI_(float)
 695 CYPoolFFI_(signed char)
 696 CYPoolFFI_(signed int)
 697 CYPoolFFI_(signed long int)
 698 CYPoolFFI_(signed long long int)
 699 CYPoolFFI_(signed short int)
 700 CYPoolFFI_(unsigned char)
 701 CYPoolFFI_(unsigned int)
 702 CYPoolFFI_(unsigned long int)
 703 CYPoolFFI_(unsigned long long int)
 704 CYPoolFFI_(unsigned short int)
 705
 706 #ifdef __SIZEOF_INT128__
 707 CYPoolFFI_(signed __int128)
 708 CYPoolFFI_(unsigned __int128)
 709 #endif
 710
 711 void Void::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 712     _assert(false);
 713 }
 714
 715 void Unknown::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 716     _assert(false);
 717 }
 718
 719 void String::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 720     bool guess(false);
 721     *reinterpret_cast<const char **>(data) = CYCastPointer<const char *>(context, value, &guess);
 722     if (guess && pool != NULL)
 723         *reinterpret_cast<const char **>(data) = CYPoolCString(*pool, context, value);
 724 }
 725
 726 void Bits::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 727     _assert(false);
 728 }
 729
 730 static void CYArrayCopy(CYPool *pool, JSContextRef context, uint8_t *base, size_t length, const sig::Type &type, ffi_type *ffi, JSValueRef value, JSObjectRef object) {
 731     for (size_t index(0); index != length; ++index) {
 732         JSValueRef rhs;
 733         if (object == NULL)
 734             rhs = value;
 735         else {
 736             rhs = CYGetProperty(context, object, index);
 737             if (JSValueIsUndefined(context, rhs))
 738                 throw CYJSError(context, "unable to extract array value");
 739         }
 740
 741         type.PoolFFI(pool, context, ffi, base, rhs);
 742         base += ffi->size;
 743     }
 744 }
 745
 746 void Pointer::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 747     bool guess(false);
 748     *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value, &guess);
 749     if (!guess || pool == NULL || !JSValueIsObject(context, value))
 750         return;
 751     JSObjectRef object(CYCastJSObject(context, value));
 752     if (CYHasProperty(context, object, length_s)) {
 753         size_t length(CYArrayLength(context, object));
 754         ffi_type *element(type.GetFFI(*pool));
 755         size_t size(element->size * length);
 756         uint8_t *base(pool->malloc<uint8_t>(size, element->alignment));
 757         CYArrayCopy(pool, context, base, length, type, element, value, object);
 758         *reinterpret_cast<void **>(data) = base;
 759     }
 760 }
 761
 762 void Array::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 763     if (size == 0)
 764         return;
 765     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 766     JSObjectRef object(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 767     CYArrayCopy(pool, context, base, size, type, ffi->elements[0], value, object);
 768 }
 769
 770 void Aggregate::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 771     _assert(!overlap);
 772
 773     size_t offset(0);
 774     uint8_t *base(reinterpret_cast<uint8_t *>(data));
 775     JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 776     for (size_t index(0); index != signature.count; ++index) {
 777         sig::Element *element(&signature.elements[index]);
 778         ffi_type *field(ffi->elements[index]);
 779
 780         JSValueRef rhs;
 781         if (aggregate == NULL)
 782             rhs = value;
 783         else {
 784             rhs = CYGetProperty(context, aggregate, index);
 785             if (JSValueIsUndefined(context, rhs)) {
 786                 if (element->name != NULL)
 787                     rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 788                 else
 789                     goto undefined;
 790                 if (JSValueIsUndefined(context, rhs)) undefined:
 791                     throw CYJSError(context, "unable to extract structure value");
 792             }
 793         }
 794
 795         element->type->PoolFFI(pool, context, field, base + offset, rhs);
 796         offset += field->size;
 797         CYAlign(offset, field->alignment);
 798     }
 799 }
 800
 801 void Function::PoolFFI(CYPool *pool, JSContextRef context, ffi_type *ffi, void *data, JSValueRef value) const {
 802     _assert(false);
 803 }
 804
 805 #define CYFromFFI_(Type_) \
 806 template <> \
 807 JSValueRef Primitive<Type_>::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const { \
 808     return CYCastJSValue(context, *reinterpret_cast<Type_ *>(data)); \
 809 }
 810
 811 CYFromFFI_(bool)
 812 CYFromFFI_(char)
 813 CYFromFFI_(double)
 814 CYFromFFI_(float)
 815 CYFromFFI_(signed char)
 816 CYFromFFI_(signed int)
 817 CYFromFFI_(signed long int)
 818 CYFromFFI_(signed long long int)
 819 CYFromFFI_(signed short int)
 820 CYFromFFI_(unsigned char)
 821 CYFromFFI_(unsigned int)
 822 CYFromFFI_(unsigned long int)
 823 CYFromFFI_(unsigned long long int)
 824 CYFromFFI_(unsigned short int)
 825
 826 #ifdef __SIZEOF_INT128__
 827 CYFromFFI_(signed __int128)
 828 CYFromFFI_(unsigned __int128)
 829 #endif
 830
 831 JSValueRef Void::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 832     return CYJSUndefined(context);
 833 }
 834
 835 JSValueRef Unknown::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 836     _assert(false);
 837 }
 838
 839 JSValueRef String::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 840     if (char *value = *reinterpret_cast<char **>(data))
 841         return CString::Make(context, value, context, owner);
 842     return CYJSNull(context);
 843 }
 844
 845 JSValueRef Bits::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 846     _assert(false);
 847 }
 848
 849 JSValueRef Pointer::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 850     if (void *value = *reinterpret_cast<void **>(data))
 851         return CYMakePointer(context, value, type, NULL, owner);
 852     return CYJSNull(context);
 853 }
 854
 855 JSValueRef Array::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 856     return CArray::Make(context, data, size, type, ffi->elements[0], context, owner);
 857 }
 858
 859 JSValueRef Aggregate::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 860     return Struct_privateData::Make(context, data, *this, ffi, context, owner);
 861 }
 862
 863 JSValueRef Function::FromFFI(JSContextRef context, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) const {
 864     return CYMakeFunctor(context, reinterpret_cast<void (*)()>(data), variadic, signature);
 865 }
 866
 867 }
 868
 869 void CYExecuteClosure(ffi_cif *cif, void *result, void **arguments, void *arg) {
 870     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 871
 872     JSContextRef context(internal->function_);
 873
 874     size_t count(internal->cif_.nargs);
 875     JSValueRef values[count];
 876
 877     for (size_t index(0); index != count; ++index)
 878         values[index] = internal->signature_.elements[1 + index].type->FromFFI(context, internal->cif_.arg_types[index], arguments[index]);
 879
 880     JSValueRef value(internal->adapter_(context, count, values, internal->function_));
 881     if (internal->cif_.rtype != &ffi_type_void)
 882         internal->signature_.elements[0].type->PoolFFI(NULL, context, internal->cif_.rtype, result, value);
 883 }
 884
 885 static JSValueRef FunctionAdapter_(JSContextRef context, size_t count, JSValueRef values[], JSObjectRef function) {
 886     return CYCallAsFunction(context, function, NULL, count, values);
 887 }
 888
 889 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 890 static void CYFreeFunctor(void *data) {
 891     ffi_closure_free(data);
 892 }
 893 #else
 894 static void CYFreeFunctor(void *data) {
 895     _syscall(munmap(data, sizeof(ffi_closure)));
 896 }
 897 #endif
 898
 899 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const sig::Signature &signature, JSValueRef (*adapter)(JSContextRef, size_t, JSValueRef[], JSObjectRef)) {
 900     // XXX: in case of exceptions this will leak
 901     Closure_privateData *internal(new Closure_privateData(context, function, adapter, signature));
 902
 903 #if defined(__APPLE__) && (defined(__arm__) || defined(__arm64__))
 904     void *executable;
 905     ffi_closure *writable(reinterpret_cast<ffi_closure *>(ffi_closure_alloc(sizeof(ffi_closure), &executable)));
 906
 907     ffi_status status(ffi_prep_closure_loc(writable, &internal->cif_, &CYExecuteClosure, internal, executable));
 908     _assert(status == FFI_OK);
 909
 910     internal->pool_->atexit(&CYFreeFunctor, writable);
 911     internal->value_ = reinterpret_cast<void (*)()>(executable);
 912 #else
 913     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 914         NULL, sizeof(ffi_closure),
 915         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 916         -1, 0
 917     )));
 918
 919     ffi_status status(ffi_prep_closure(closure, &internal->cif_, &CYExecuteClosure, internal));
 920     _assert(status == FFI_OK);
 921
 922     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 923
 924     internal->pool_->atexit(&CYFreeFunctor, closure);
 925     internal->value_ = reinterpret_cast<void (*)()>(closure);
 926 #endif
 927
 928     return internal;
 929 }
 930
 931 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const sig::Signature &signature) {
 932     Closure_privateData *internal(CYMakeFunctor_(context, function, signature, &FunctionAdapter_));
 933     JSObjectRef object(JSObjectMake(context, Functor_, internal));
 934     // XXX: see above notes about needing to leak
 935     JSValueProtect(CYGetJSContext(context), object);
 936     return object;
 937 }
 938
 939 JSValueRef CYGetCachedValue(JSContextRef context, JSStringRef name) {
 940     return CYGetProperty(context, CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s)), name);
 941 }
 942
 943 JSObjectRef CYGetCachedObject(JSContextRef context, JSStringRef name) {
 944     return CYCastJSObject(context, CYGetCachedValue(context, name));
 945 }
 946
 947 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, bool variadic, const sig::Signature &signature) {
 948     JSObjectRef Function(CYGetCachedObject(context, CYJSString("Function")));
 949
 950     bool function(_jsccall(JSValueIsInstanceOfConstructor, context, value, Function));
 951     if (function) {
 952         JSObjectRef function(CYCastJSObject(context, value));
 953         return CYMakeFunctor(context, function, signature);
 954     } else {
 955         void (*function)()(CYCastPointer<void (*)()>(context, value));
 956         return CYMakeFunctor(context, function, variadic, signature);
 957     }
 958 }
 959
 960 static JSValueRef CString_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 961     CYPool pool;
 962     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 963
 964     ssize_t offset;
 965     if (!CYGetOffset(pool, context, property, offset))
 966         return NULL;
 967
 968     return CYCastJSValue(context, CYJSString(CYUTF8String(&internal->value_[offset], 1)));
 969 } CYCatch(NULL) }
 970
 971 static bool CString_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 972     CYPool pool;
 973     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
 974
 975     ssize_t offset;
 976     if (!CYGetOffset(pool, context, property, offset))
 977         return false;
 978
 979     const char *data(CYPoolCString(pool, context, value));
 980     internal->value_[offset] = *data;
 981     return true;
 982 } CYCatch(false) }
 983
 984 static bool Index_(CYPool &pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 985     Type_privateData *typical(internal->type_);
 986     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
 987     if (type == NULL)
 988         return false;
 989
 990     const char *name(CYPoolCString(pool, context, property));
 991     size_t length(strlen(name));
 992     double number(CYCastDouble(name, length));
 993
 994     size_t count(type->signature.count);
 995
 996     if (std::isnan(number)) {
 997         if (property == NULL)
 998             return false;
 999
1000         sig::Element *elements(type->signature.elements);
1001
1002         for (size_t local(0); local != count; ++local) {
1003             sig::Element *element(&elements[local]);
1004             if (element->name != NULL && strcmp(name, element->name) == 0) {
1005                 index = local;
1006                 goto base;
1007             }
1008         }
1009
1010         return false;
1011     } else {
1012         index = static_cast<ssize_t>(number);
1013         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
1014             return false;
1015     }
1016
1017   base:
1018     ffi_type **elements(typical->GetFFI()->elements);
1019
1020     size_t offset(0);
1021     for (ssize_t local(0); local != index; ++local) {
1022         offset += elements[local]->size;
1023         CYAlign(offset, elements[local + 1]->alignment);
1024     }
1025
1026     base = reinterpret_cast<uint8_t *>(internal->value_) + offset;
1027     return true;
1028 }
1029
1030 static void *Offset_(CYPool &pool, JSContextRef context, JSStringRef property, void *data, ffi_type *ffi) {
1031     ssize_t offset;
1032     if (JSStringIsEqualToUTF8CString(property, "$cyi"))
1033         offset = 0;
1034     else if (!CYGetOffset(pool, context, property, offset))
1035         return NULL;
1036     return reinterpret_cast<uint8_t *>(data) + ffi->size * offset;
1037 }
1038
1039 static JSValueRef Offset_getProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSObjectRef owner) {
1040     ffi_type *ffi(typical->GetFFI());
1041     void *base(Offset_(pool, context, property, data, ffi));
1042     if (base == NULL)
1043         return NULL;
1044     return typical->type_->FromFFI(context, ffi, base, false, owner);
1045 }
1046
1047 static bool Offset_setProperty(CYPool &pool, JSContextRef context, JSStringRef property, void *data, Type_privateData *typical, JSValueRef value) {
1048     ffi_type *ffi(typical->GetFFI());
1049     void *base(Offset_(pool, context, property, data, ffi));
1050     if (base == NULL)
1051         return false;
1052
1053     typical->type_->PoolFFI(NULL, context, ffi, base, value);
1054     return true;
1055 }
1056
1057 static JSValueRef CArray_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1058     CYPool pool;
1059     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1060     if (JSStringIsEqual(property, length_s))
1061         return CYCastJSValue(context, internal->length_);
1062     Type_privateData *typical(internal->type_);
1063     JSObjectRef owner(internal->owner_ ?: object);
1064     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1065 } CYCatch(NULL) }
1066
1067 static bool CArray_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1068     CYPool pool;
1069     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1070     Type_privateData *typical(internal->type_);
1071     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1072 } CYCatch(false) }
1073
1074 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1075     CYPool pool;
1076     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1077
1078     Type_privateData *typical(internal->type_);
1079
1080     if (sig::Function *function = dynamic_cast<sig::Function *>(typical->type_)) {
1081         if (!JSStringIsEqualToUTF8CString(property, "$cyi"))
1082             return NULL;
1083         return CYMakeFunctor(context, reinterpret_cast<void (*)()>(internal->value_), function->variadic, function->signature);
1084     }
1085
1086     JSObjectRef owner(internal->owner_ ?: object);
1087     return Offset_getProperty(pool, context, property, internal->value_, typical, owner);
1088 } CYCatch(NULL) }
1089
1090 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
1091     CYPool pool;
1092     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1093     Type_privateData *typical(internal->type_);
1094     return Offset_setProperty(pool, context, property, internal->value_, typical, value);
1095 } CYCatch(false) }
1096
1097 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1098     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
1099     Type_privateData *typical(internal->type_);
1100     return CYMakePointer(context, internal->value_, *typical->type_, typical->ffi_, _this);
1101 } CYCatch(NULL) }
1102
1103 static JSValueRef Struct_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1104     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1105     return CYMakeType(context, *internal->type_->type_);
1106 } CYCatch(NULL) }
1107
1108 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1109     CYPool pool;
1110     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1111     Type_privateData *typical(internal->type_);
1112     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1113
1114     ssize_t index;
1115     uint8_t *base;
1116
1117     if (!Index_(pool, context, internal, property, index, base))
1118         return NULL;
1119
1120     JSObjectRef owner(internal->owner_ ?: object);
1121
1122     return type->signature.elements[index].type->FromFFI(context, typical->GetFFI()->elements[index], base, false, owner);
1123 } CYCatch(NULL) }
1124
1125 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, 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 false;
1136
1137     type->signature.elements[index].type->PoolFFI(NULL, context, typical->GetFFI()->elements[index], base, value);
1138     return true;
1139 } CYCatch(false) }
1140
1141 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1142     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1143     Type_privateData *typical(internal->type_);
1144     sig::Aggregate *type(static_cast<sig::Aggregate *>(typical->type_));
1145
1146     if (type == NULL)
1147         return;
1148
1149     size_t count(type->signature.count);
1150     sig::Element *elements(type->signature.elements);
1151
1152     char number[32];
1153
1154     for (size_t index(0); index != count; ++index) {
1155         const char *name;
1156         name = elements[index].name;
1157
1158         if (name == NULL) {
1159             sprintf(number, "%zu", index);
1160             name = number;
1161         }
1162
1163         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1164     }
1165 }
1166
1167 static sig::Void Void_;
1168 static sig::Pointer PointerToVoid_(Void_);
1169
1170 static sig::Type *CYGetType(CYPool &pool, JSContextRef context, JSValueRef value) {
1171     if (JSValueIsNull(context, value))
1172         return &PointerToVoid_;
1173     JSObjectRef object(CYCastJSObject(context, value));
1174     JSObjectRef type(CYCastJSObject(context, CYGetProperty(context, object, cyt_s)));
1175     _assert(JSValueIsObjectOfClass(context, type, Type_privateData::Class_));
1176     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(type)));
1177     return internal->type_;
1178 }
1179
1180 void CYCallFunction(CYPool &pool, JSContextRef context, ffi_cif *cif, void (*function)(), void *value, void **values) {
1181     ffi_call(cif, function, value, values);
1182 }
1183
1184 JSValueRef CYCallFunction(CYPool &pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, bool variadic, const sig::Signature &signature, ffi_cif *cif, void (*function)()) {
1185     size_t have(setups + count);
1186     size_t need(signature.count - 1);
1187
1188     if (have < need)
1189         throw CYJSError(context, "insufficient number of arguments to ffi function");
1190
1191     ffi_cif corrected;
1192     sig::Element *elements(signature.elements);
1193
1194     if (have > need) {
1195         if (!variadic)
1196             throw CYJSError(context, "exorbitant number of arguments to ffi function");
1197
1198         elements = new (pool) sig::Element[have + 1];
1199         memcpy(elements, signature.elements, sizeof(sig::Element) * (need + 1));
1200
1201         for (size_t index(need); index != have; ++index) {
1202             sig::Element &element(elements[index + 1]);
1203             element.name = NULL;
1204             element.offset = _not(size_t);
1205             element.type = CYGetType(pool, context, arguments[index - setups]);
1206         }
1207
1208         sig::Signature extended;
1209         extended.elements = elements;
1210         extended.count = have + 1;
1211         sig::sig_ffi_cif(pool, signature.count, extended, &corrected);
1212         cif = &corrected;
1213     }
1214
1215     void *values[have];
1216     memcpy(values, setup, sizeof(void *) * setups);
1217
1218     for (size_t index(setups); index != have; ++index) {
1219         sig::Element &element(elements[index + 1]);
1220         ffi_type *ffi(cif->arg_types[index]);
1221         values[index] = pool.malloc<uint8_t>(ffi->size, ffi->alignment);
1222         element.type->PoolFFI(&pool, context, ffi, values[index], arguments[index - setups]);
1223     }
1224
1225     uint8_t value[cif->rtype->size];
1226
1227     void (*call)(CYPool &, JSContextRef, ffi_cif *, void (*)(), void *, void **) = &CYCallFunction;
1228     // XXX: this only supports one hook, but it is a bad idea anyway
1229     for (CYHook *hook : GetHooks())
1230         if (hook->CallFunction != NULL)
1231             call = hook->CallFunction;
1232
1233     call(pool, context, cif, function, value, values);
1234     return signature.elements[0].type->FromFFI(context, cif->rtype, value, initialize);
1235 }
1236
1237 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1238     CYPool pool;
1239     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1240     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, internal->variadic_, internal->signature_, &internal->cif_, internal->value_);
1241 } CYCatch(NULL) }
1242
1243 static JSValueRef Pointer_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1244     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1245     if (dynamic_cast<sig::Function *>(internal->type_->type_) == NULL)
1246         throw CYJSError(context, "cannot call a pointer to non-function");
1247     JSObjectRef functor(CYCastJSObject(context, CYGetProperty(context, object, cyi_s)));
1248     return CYCallAsFunction(context, functor, _this, count, arguments);
1249 } CYCatch(NULL) }
1250
1251 JSObjectRef CYMakeType(JSContextRef context, const sig::Type &type) {
1252     return Type_privateData::Make(context, type);
1253 }
1254
1255 extern "C" bool CYBridgeHash(CYPool &pool, CYUTF8String name, const char *&code, unsigned &flags) {
1256     sqlite3_stmt *statement;
1257
1258     _sqlcall(sqlite3_prepare(database_,
1259         "select "
1260             "\"cache\".\"code\", "
1261             "\"cache\".\"flags\" "
1262         "from \"cache\" "
1263         "where"
1264             " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM " and"
1265             " \"cache\".\"name\" = ?"
1266         " limit 1"
1267     , -1, &statement, NULL));
1268
1269     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1270
1271     bool success;
1272     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE)
1273         success = false;
1274     else {
1275         success = true;
1276         code = sqlite3_column_pooled(pool, statement, 0);
1277         flags = sqlite3_column_int(statement, 1);
1278     }
1279
1280     _sqlcall(sqlite3_finalize(statement));
1281     return success;
1282 }
1283
1284 static bool All_hasProperty(JSContextRef context, JSObjectRef object, JSStringRef property) {
1285     if (JSStringIsEqualToUTF8CString(property, "errno"))
1286         return true;
1287
1288     JSObjectRef global(CYGetGlobalObject(context));
1289     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1290     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1291
1292     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1293         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1294             if (CYHasProperty(context, space, property))
1295                 return true;
1296
1297     CYPool pool;
1298     const char *code;
1299     unsigned flags;
1300     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags))
1301         return true;
1302
1303     return false;
1304 }
1305
1306 static JSValueRef All_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1307     if (JSStringIsEqualToUTF8CString(property, "errno"))
1308         return CYCastJSValue(context, errno);
1309
1310     JSObjectRef global(CYGetGlobalObject(context));
1311     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1312     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1313
1314     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1315         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1)))
1316             if (JSValueRef value = CYGetProperty(context, space, property))
1317                 if (!JSValueIsUndefined(context, value))
1318                     return value;
1319
1320     CYPool pool;
1321     const char *code;
1322     unsigned flags;
1323     if (CYBridgeHash(pool, CYPoolUTF8String(pool, context, property), code, flags)) {
1324         CYUTF8String parsed;
1325
1326         try {
1327             parsed = CYPoolCode(pool, code);
1328         } catch (const CYException &error) {
1329             CYThrow("%s", pool.strcat("error caching ", CYPoolCString(pool, context, property), ": ", error.PoolCString(pool), NULL));
1330         }
1331
1332         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(parsed), NULL, NULL, 0));
1333
1334         if (flags == 0) {
1335             JSObjectRef cache(CYGetCachedObject(context, CYJSString("cache")));
1336             CYSetProperty(context, cache, property, result);
1337         }
1338
1339         return result;
1340     }
1341
1342     return NULL;
1343 } CYCatch(NULL) }
1344
1345 static JSValueRef All_complete_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1346     _assert(count == 1);
1347     CYPool pool;
1348     CYUTF8String prefix(CYPoolUTF8String(pool, context, CYJSString(context, arguments[0])));
1349
1350     JSObjectRef array(NULL);
1351
1352     {
1353     CYArrayBuilder<1024> values(context, array);
1354
1355     sqlite3_stmt *statement;
1356
1357     if (prefix.size == 0)
1358         _sqlcall(sqlite3_prepare(database_,
1359             "select "
1360                 "\"cache\".\"name\" "
1361             "from \"cache\" "
1362             "where"
1363                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1364         , -1, &statement, NULL));
1365     else {
1366         _sqlcall(sqlite3_prepare(database_,
1367             "select "
1368                 "\"cache\".\"name\" "
1369             "from \"cache\" "
1370             "where"
1371                 " \"cache\".\"name\" >= ? and \"cache\".\"name\" < ? and "
1372                 " \"cache\".\"system\" & " CY_SYSTEM " == " CY_SYSTEM
1373         , -1, &statement, NULL));
1374
1375         _sqlcall(sqlite3_bind_text(statement, 1, prefix.data, prefix.size, SQLITE_STATIC));
1376
1377         char *after(pool.strndup(prefix.data, prefix.size));
1378         ++after[prefix.size - 1];
1379         _sqlcall(sqlite3_bind_text(statement, 2, after, prefix.size, SQLITE_STATIC));
1380     }
1381
1382     while (_sqlcall(sqlite3_step(statement)) != SQLITE_DONE)
1383         values(CYCastJSValue(context, CYJSString(sqlite3_column_string(statement, 0))));
1384
1385     _sqlcall(sqlite3_finalize(statement));
1386     }
1387
1388     return array;
1389 } CYCatch(NULL) }
1390
1391 static void All_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1392     JSObjectRef global(CYGetGlobalObject(context));
1393     JSObjectRef cycript(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Cycript"))));
1394     JSObjectRef alls(CYCastJSObject(context, CYGetProperty(context, cycript, CYJSString("alls"))));
1395
1396     for (size_t i(0), count(CYArrayLength(context, alls)); i != count; ++i)
1397         if (JSObjectRef space = CYCastJSObject(context, CYArrayGet(context, alls, count - i - 1))) {
1398             JSPropertyNameArrayRef subset(JSObjectCopyPropertyNames(context, space));
1399             for (size_t index(0), count(JSPropertyNameArrayGetCount(subset)); index != count; ++index)
1400                 JSPropertyNameAccumulatorAddName(names, JSPropertyNameArrayGetNameAtIndex(subset, index));
1401             JSPropertyNameArrayRelease(subset);
1402         }
1403 }
1404
1405 static JSObjectRef CArray_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1406     _assert(false);
1407 } CYCatch(NULL) }
1408
1409 static JSObjectRef CString_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1410     _assert(false);
1411 } CYCatch(NULL) }
1412
1413 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1414     _assert(false);
1415 } CYCatch(NULL) }
1416
1417 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1418     CYPool pool;
1419
1420     if (false) {
1421     } else if (count == 1) {
1422         const char *encoding(CYPoolCString(pool, context, arguments[0]));
1423         sig::Signature signature;
1424         sig::Parse(pool, &signature, encoding, &Structor_);
1425         return CYMakeType(context, *signature.elements[0].type);
1426     } else if (count == 2) {
1427         JSObjectRef types(CYCastJSObject(context, arguments[0]));
1428         size_t count(CYArrayLength(context, types));
1429
1430         JSObjectRef names(CYCastJSObject(context, arguments[1]));
1431
1432         sig::Aggregate type(false);
1433         type.signature.elements = new(pool) sig::Element[count];
1434         type.signature.count = count;
1435
1436         for (size_t i(0); i != count; ++i) {
1437             sig::Element &element(type.signature.elements[i]);
1438             element.offset = _not(size_t);
1439
1440             JSValueRef name(CYArrayGet(context, names, i));
1441             if (JSValueIsUndefined(context, name))
1442                 element.name = NULL;
1443             else
1444                 element.name = CYPoolCString(pool, context, name);
1445
1446             JSObjectRef object(CYCastJSObject(context, CYArrayGet(context, types, i)));
1447             _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1448             Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1449             element.type = internal->type_;
1450         }
1451
1452         return CYMakeType(context, type);
1453     } else {
1454         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1455     }
1456 } CYCatch(NULL) }
1457
1458 static JSValueRef Type_callAsFunction_$With(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], sig::Callable &type, JSValueRef *exception) { CYTry {
1459     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1460
1461     CYPool pool;
1462
1463     type.signature.elements = new(pool) sig::Element[1 + count];
1464     type.signature.count = 1 + count;
1465
1466     type.signature.elements[0].name = NULL;
1467     type.signature.elements[0].type = internal->type_;
1468     type.signature.elements[0].offset = _not(size_t);
1469
1470     for (size_t i(0); i != count; ++i) {
1471         sig::Element &element(type.signature.elements[i + 1]);
1472         element.name = NULL;
1473         element.offset = _not(size_t);
1474
1475         JSObjectRef object(CYCastJSObject(context, arguments[i]));
1476         _assert(JSValueIsObjectOfClass(context, object, Type_privateData::Class_));
1477         Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1478
1479         element.type = internal->type_;
1480     }
1481
1482     return CYMakeType(context, type);
1483 } CYCatch(NULL) }
1484
1485 static JSValueRef Type_callAsFunction_arrayOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1486     if (count != 1)
1487         throw CYJSError(context, "incorrect number of arguments to Type.arrayOf");
1488     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1489
1490     CYPool pool;
1491     size_t index(CYGetIndex(pool, context, CYJSString(context, arguments[0])));
1492     if (index == _not(size_t))
1493         throw CYJSError(context, "invalid array size used with Type.arrayOf");
1494
1495     sig::Array type(*internal->type_, index);
1496     return CYMakeType(context, type);
1497 } CYCatch(NULL) }
1498
1499 static JSValueRef Type_callAsFunction_blockWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1500 #ifdef CY_OBJECTIVEC
1501     sig::Block type;
1502     return Type_callAsFunction_$With(context, object, _this, count, arguments, type, exception);
1503 #else
1504     _assert(false);
1505 #endif
1506 }
1507
1508 static JSValueRef Type_callAsFunction_constant(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1509     if (count != 0)
1510         throw CYJSError(context, "incorrect number of arguments to Type.constant");
1511     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1512
1513     CYPool pool;
1514     sig::Type *type(internal->type_->Copy(pool));
1515     type->flags |= JOC_TYPE_CONST;
1516     return CYMakeType(context, *type);
1517 } CYCatch(NULL) }
1518
1519 static JSValueRef Type_callAsFunction_functionWith(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1520     bool variadic(count != 0 && JSValueIsNull(context, arguments[count - 1]));
1521     sig::Function type(variadic);
1522     return Type_callAsFunction_$With(context, object, _this, variadic ? count - 1 : count, arguments, type, exception);
1523 }
1524
1525 static JSValueRef Type_callAsFunction_pointerTo(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1526     if (count != 0)
1527         throw CYJSError(context, "incorrect number of arguments to Type.pointerTo");
1528     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1529
1530     if (dynamic_cast<sig::Primitive<char> *>(internal->type_) != NULL)
1531         return CYMakeType(context, sig::String());
1532     else
1533         return CYMakeType(context, sig::Pointer(*internal->type_));
1534 } CYCatch(NULL) }
1535
1536 static JSValueRef Type_callAsFunction_withName(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1537     if (count != 1)
1538         throw CYJSError(context, "incorrect number of arguments to Type.withName");
1539     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1540
1541     CYPool pool;
1542     return CYMakeType(context, *internal->type_->Copy(pool, CYPoolCString(pool, context, arguments[0])));
1543 } CYCatch(NULL) }
1544
1545 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1546     if (count != 1)
1547         throw CYJSError(context, "incorrect number of arguments to type cast function");
1548     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1549
1550     if (sig::Function *function = dynamic_cast<sig::Function *>(internal->type_))
1551         return CYMakeFunctor(context, arguments[0], function->variadic, function->signature);
1552
1553     CYPool pool;
1554
1555     sig::Type *type(internal->type_);
1556     ffi_type *ffi(internal->GetFFI());
1557     void *data(pool.malloc<void>(ffi->size, ffi->alignment));
1558
1559     type->PoolFFI(&pool, context, ffi, data, arguments[0]);
1560     JSValueRef value(type->FromFFI(context, ffi, data));
1561
1562     if (JSValueGetType(context, value) == kJSTypeNumber) {
1563         JSObjectRef typed(_jsccall(JSObjectCallAsConstructor, context, CYGetCachedObject(context, CYJSString("Number")), 1, &value));
1564         CYSetProperty(context, typed, cyt_s, object, kJSPropertyAttributeDontEnum);
1565         value = typed;
1566     }
1567
1568     return value;
1569 } CYCatch(NULL) }
1570
1571 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1572     if (count > 1)
1573         throw CYJSError(context, "incorrect number of arguments to Type allocator");
1574     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1575
1576     JSObjectRef pointer(CYMakePointer(context, NULL, *internal->type_, NULL, NULL));
1577     Pointer *value(reinterpret_cast<Pointer *>(JSObjectGetPrivate(pointer)));
1578
1579     sig::Type *type(internal->type_);
1580     ffi_type *ffi(internal->GetFFI());
1581     value->value_ = value->pool_->malloc<void>(ffi->size, ffi->alignment);
1582
1583     if (count == 0)
1584         memset(value->value_, 0, ffi->size);
1585     else
1586         type->PoolFFI(value->pool_, context, ffi, value->value_, arguments[0]);
1587
1588     return pointer;
1589 } CYCatch(NULL) }
1590
1591 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1592     if (count != 2)
1593         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1594     CYPool pool;
1595     const char *encoding(CYPoolCString(pool, context, arguments[1]));
1596     sig::Signature signature;
1597     sig::Parse(pool, &signature, encoding, &Structor_);
1598     return CYMakeFunctor(context, arguments[0], false, signature);
1599 } CYCatch(NULL) }
1600
1601 static JSValueRef CArray_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1602     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1603     JSObjectRef owner(internal->owner_ ?: object);
1604     return CYMakePointer(context, internal->value_, *internal->type_->type_, NULL, owner);
1605 } CYCatch(NULL) }
1606
1607 static JSValueRef CString_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1608     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1609     JSObjectRef owner(internal->owner_ ?: object);
1610     return CYMakePointer(context, internal->value_, sig::Primitive<char>(), NULL, owner);
1611 } CYCatch(NULL) }
1612
1613 static JSValueRef Functor_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1614     CYPool pool;
1615     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1616
1617     sig::Function type(internal->variadic_);
1618     sig::Copy(pool, type.signature, internal->signature_);
1619
1620     return CYMakePointer(context, reinterpret_cast<void *>(internal->value_), type, NULL, NULL);
1621 } CYCatch(NULL) }
1622
1623 static JSValueRef Pointer_callAsFunction_toPointer(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1624     return _this;
1625 } CYCatch(NULL) }
1626
1627 static JSValueRef CArray_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1628     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(_this)));
1629     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1630 } CYCatch(NULL) }
1631
1632 static JSValueRef Pointer_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1633     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1634     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1635 } CYCatch(NULL) }
1636
1637 static JSValueRef Functor_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1638     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1639     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1640 } CYCatch(NULL) }
1641
1642 static JSValueRef Functor_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1643     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(_this)));
1644     uint8_t *value(reinterpret_cast<uint8_t *>(internal->value_));
1645
1646     CYLocalPool pool;
1647
1648     sig::Function function(internal->variadic_);
1649     sig::Copy(pool, function.signature, internal->signature_);
1650
1651     auto typed(CYDecodeType(pool, &function)); {
1652         std::ostringstream str;
1653         Dl_info info;
1654         if (internal->value_ == NULL)
1655             str << "NULL";
1656         else if (dladdr(value, &info) == 0)
1657             str << internal->value_;
1658         else {
1659             str << info.dli_sname;
1660             off_t offset(value - reinterpret_cast<uint8_t *>(info.dli_saddr));
1661             if (offset != 0)
1662                 str << "+0x" << std::hex << offset;
1663         }
1664
1665         typed->identifier_ = new(pool) CYIdentifier(pool.strdup(str.str().c_str()));
1666     }
1667
1668     std::ostringstream str;
1669     CYOptions options;
1670     CYOutput output(*str.rdbuf(), options);
1671     output.pretty_ = true;
1672     (new(pool) CYExternalExpression(new(pool) CYString("C"), typed))->Output(output, CYNoFlags);
1673     return CYCastJSValue(context, CYJSString(str.str()));
1674 } CYCatch(NULL) }
1675
1676 static JSValueRef Pointer_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1677     std::set<void *> *objects(CYCastObjects(context, _this, count, arguments));
1678
1679     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(_this)));
1680
1681     try {
1682         JSValueRef value(CYGetProperty(context, _this, cyi_s));
1683         if (!JSValueIsUndefined(context, value)) {
1684             CYPool pool;
1685             return CYCastJSValue(context, pool.strcat("&", CYPoolCCYON(pool, context, value, objects), NULL));
1686         }
1687     } catch (const CYException &e) {
1688         // XXX: it might be interesting to include this error
1689     }
1690
1691     CYLocalPool pool;
1692     std::ostringstream str;
1693
1694     sig::Pointer type(*internal->type_->type_);
1695
1696     CYOptions options;
1697     CYOutput output(*str.rdbuf(), options);
1698     (new(pool) CYTypeExpression(CYDecodeType(pool, &type)))->Output(output, CYNoFlags);
1699
1700     str << "(" << internal->value_ << ")";
1701     std::string value(str.str());
1702     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1703 } CYCatch(NULL) }
1704
1705 static JSValueRef CString_getProperty_length(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1706     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(object)));
1707     return CYCastJSValue(context, strlen(internal->value_));
1708 } CYCatch(NULL) }
1709
1710 static JSValueRef CString_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1711     return CYMakeType(context, sig::String());
1712 } CYCatch(NULL) }
1713
1714 static JSValueRef CArray_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1715     CArray *internal(reinterpret_cast<CArray *>(JSObjectGetPrivate(object)));
1716     sig::Array type(*internal->type_->type_, internal->length_);
1717     return CYMakeType(context, type);
1718 } CYCatch(NULL) }
1719
1720 static JSValueRef Pointer_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1721     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
1722     sig::Pointer type(*internal->type_->type_);
1723     return CYMakeType(context, type);
1724 } CYCatch(NULL) }
1725
1726 static JSValueRef CString_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1727     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1728     const char *string(internal->value_);
1729     std::ostringstream str;
1730     if (string == NULL)
1731         str << "NULL";
1732     else {
1733         str << "&";
1734         CYStringify(str, string, strlen(string), true);
1735     }
1736     std::string value(str.str());
1737     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
1738 } CYCatch(NULL) }
1739
1740 static JSValueRef CString_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1741     CString *internal(reinterpret_cast<CString *>(JSObjectGetPrivate(_this)));
1742     return CYCastJSValue(context, internal->value_);
1743 } CYCatch(NULL) }
1744
1745 static JSValueRef Functor_getProperty_$cyt(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1746     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1747     CYPool pool;
1748     sig::Function type(internal->variadic_);
1749     sig::Copy(pool, type.signature, internal->signature_);
1750     return CYMakeType(context, type);
1751 } CYCatch(NULL) }
1752
1753 static JSValueRef Type_getProperty_alignment(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1754     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1755     return CYCastJSValue(context, internal->GetFFI()->alignment);
1756 } CYCatch(NULL) }
1757
1758 static JSValueRef Type_getProperty_name(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1759     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1760     return CYCastJSValue(context, internal->type_->GetName());
1761 } CYCatch(NULL) }
1762
1763 static JSValueRef Type_getProperty_size(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1764     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1765     return CYCastJSValue(context, internal->GetFFI()->size);
1766 } CYCatch(NULL) }
1767
1768 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1769     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1770     CYPool pool;
1771     const char *type(sig::Unparse(pool, internal->type_));
1772     return CYCastJSValue(context, CYJSString(type));
1773 } CYCatch(NULL) }
1774
1775 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1776     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1777     CYLocalPool pool;
1778     std::stringbuf out;
1779     CYOptions options;
1780     CYOutput output(out, options);
1781     output.pretty_ = true;
1782     (new(pool) CYTypeExpression(CYDecodeType(pool, internal->type_->Copy(pool, ""))))->Output(output, CYNoFlags);
1783     return CYCastJSValue(context, CYJSString(out.str().c_str()));
1784 } CYCatch(NULL) }
1785
1786 static JSStaticFunction All_staticFunctions[2] = {
1787     {"cy$complete", &All_complete_callAsFunction, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1788     {NULL, NULL, 0}
1789 };
1790
1791 static JSStaticFunction CArray_staticFunctions[3] = {
1792     {"toPointer", &CArray_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1793     {"valueOf", &CArray_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1794     {NULL, NULL, 0}
1795 };
1796
1797 static JSStaticValue CArray_staticValues[2] = {
1798     {"$cyt", &CArray_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1799     {NULL, NULL, NULL, 0}
1800 };
1801
1802 static JSStaticFunction CString_staticFunctions[5] = {
1803     {"toCYON", &CString_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1804     {"toPointer", &CString_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1805     {"toString", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1806     {"valueOf", &CString_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1807     {NULL, NULL, 0}
1808 };
1809
1810 static JSStaticValue CString_staticValues[3] = {
1811     {"length", &CString_getProperty_length, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1812     {"$cyt", &CString_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1813     {NULL, NULL, NULL, 0}
1814 };
1815
1816 static JSStaticFunction Pointer_staticFunctions[4] = {
1817     {"toCYON", &Pointer_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1818     {"toPointer", &Pointer_callAsFunction_toPointer, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1819     {"valueOf", &Pointer_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1820     {NULL, NULL, 0}
1821 };
1822
1823 static JSStaticValue Pointer_staticValues[2] = {
1824     {"$cyt", &Pointer_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1825     {NULL, NULL, NULL, 0}
1826 };
1827
1828 static JSStaticFunction Struct_staticFunctions[2] = {
1829     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1830     {NULL, NULL, 0}
1831 };
1832
1833 static JSStaticValue Struct_staticValues[2] = {
1834     {"$cyt", &Struct_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1835     {NULL, NULL, NULL, 0}
1836 };
1837
1838 static JSStaticFunction Functor_staticFunctions[4] = {
1839     {"$cya", &Functor_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1840     {"toCYON", &Functor_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1841     {"valueOf", &Functor_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1842     {NULL, NULL, 0}
1843 };
1844
1845 namespace cy {
1846     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1847 }
1848
1849 static JSStaticValue Functor_staticValues[2] = {
1850     {"$cyt", &Functor_getProperty_$cyt, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1851     {NULL, NULL, NULL, 0}
1852 };
1853
1854 namespace cy {
1855     JSStaticValue const * const Functor::StaticValues = Functor_staticValues;
1856 }
1857
1858 static JSStaticValue Type_staticValues[4] = {
1859     {"alignment", &Type_getProperty_alignment, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1860     {"name", &Type_getProperty_name, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1861     {"size", &Type_getProperty_size, NULL, kJSPropertyAttributeReadOnly | kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1862     {NULL, NULL, NULL, 0}
1863 };
1864
1865 static JSStaticFunction Type_staticFunctions[9] = {
1866     {"arrayOf", &Type_callAsFunction_arrayOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1867     {"blockWith", &Type_callAsFunction_blockWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1868     {"constant", &Type_callAsFunction_constant, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1869     {"functionWith", &Type_callAsFunction_functionWith, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1870     {"pointerTo", &Type_callAsFunction_pointerTo, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1871     {"withName", &Type_callAsFunction_withName, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1872     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1873     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1874     {NULL, NULL, 0}
1875 };
1876
1877 _visible void CYSetArgs(int argc, const char *argv[]) {
1878     JSContextRef context(CYGetJSContext());
1879     JSValueRef args[argc];
1880     for (int i(0); i != argc; ++i)
1881         args[i] = CYCastJSValue(context, argv[i]);
1882
1883     JSObjectRef array(CYObjectMakeArray(context, argc, args));
1884     JSObjectRef System(CYGetCachedObject(context, CYJSString("System")));
1885     CYSetProperty(context, System, CYJSString("args"), array);
1886 }
1887
1888 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1889     return JSContextGetGlobalObject(context);
1890 }
1891
1892 // XXX: this is neither exceptin safe nor even terribly sane
1893 class ExecutionHandle {
1894   private:
1895     JSContextRef context_;
1896     std::vector<void *> handles_;
1897
1898   public:
1899     ExecutionHandle(JSContextRef context) :
1900         context_(context)
1901     {
1902         handles_.resize(GetHooks().size());
1903         for (size_t i(0); i != GetHooks().size(); ++i) {
1904             CYHook *hook(GetHooks()[i]);
1905             if (hook->ExecuteStart != NULL)
1906                 handles_[i] = (*hook->ExecuteStart)(context_);
1907             else
1908                 handles_[i] = NULL;
1909         }
1910     }
1911
1912     ~ExecutionHandle() {
1913         for (size_t i(GetHooks().size()); i != 0; --i) {
1914             CYHook *hook(GetHooks()[i-1]);
1915             if (hook->ExecuteEnd != NULL)
1916                 (*hook->ExecuteEnd)(context_, handles_[i-1]);
1917         }
1918     }
1919 };
1920
1921 #ifndef __ANDROID__
1922 static volatile bool cancel_;
1923
1924 static bool CYShouldTerminate(JSContextRef context, void *arg) {
1925     return cancel_;
1926 }
1927 #endif
1928
1929 _visible const char *CYExecute(JSContextRef context, CYPool &pool, CYUTF8String code) {
1930     ExecutionHandle handle(context);
1931
1932 #ifndef __ANDROID__
1933     cancel_ = false;
1934     if (&JSContextGroupSetExecutionTimeLimit != NULL)
1935         JSContextGroupSetExecutionTimeLimit(JSContextGetGroup(context), 0.5, &CYShouldTerminate, NULL);
1936 #endif
1937
1938     try {
1939         JSValueRef result(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
1940         if (JSValueIsUndefined(context, result))
1941             return NULL;
1942
1943         std::set<void *> objects;
1944         const char *json(_jsccall(CYPoolCCYON, pool, context, result, objects));
1945         CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1946
1947         return json;
1948     } catch (const CYException &error) {
1949         return pool.strcat("throw ", error.PoolCString(pool), NULL);
1950     }
1951 }
1952
1953 #ifndef __ANDROID__
1954 _visible void CYCancel() {
1955     cancel_ = true;
1956 }
1957 #endif
1958
1959 const char *CYPoolLibraryPath(CYPool &pool);
1960
1961 static bool initialized_ = false;
1962
1963 void CYInitializeDynamic() {
1964     if (!initialized_)
1965         initialized_ = true;
1966     else return;
1967
1968     CYPool pool;
1969     const char *db(pool.strcat(CYPoolLibraryPath(pool), "/libcycript.db", NULL));
1970     _sqlcall(sqlite3_open_v2(db, &database_, SQLITE_OPEN_READONLY, NULL));
1971
1972     JSObjectMakeArray$ = reinterpret_cast<JSObjectRef (*)(JSContextRef, size_t, const JSValueRef[], JSValueRef *)>(dlsym(RTLD_DEFAULT, "JSObjectMakeArray"));
1973     JSSynchronousGarbageCollectForDebugging$ = reinterpret_cast<void (*)(JSContextRef)>(dlsym(RTLD_DEFAULT, "JSSynchronousGarbageCollectForDebugging"));
1974
1975     JSClassDefinition definition;
1976
1977     definition = kJSClassDefinitionEmpty;
1978     definition.className = "All";
1979     definition.staticFunctions = All_staticFunctions;
1980     definition.hasProperty = &All_hasProperty;
1981     definition.getProperty = &All_getProperty;
1982     definition.getPropertyNames = &All_getPropertyNames;
1983     All_ = JSClassCreate(&definition);
1984
1985     definition = kJSClassDefinitionEmpty;
1986     definition.className = "Context";
1987     definition.finalize = &CYFinalize;
1988     Context::Class_ = JSClassCreate(&definition);
1989
1990     definition = kJSClassDefinitionEmpty;
1991     definition.className = "CArray";
1992     definition.staticFunctions = CArray_staticFunctions;
1993     definition.staticValues = CArray_staticValues;
1994     definition.getProperty = &CArray_getProperty;
1995     definition.setProperty = &CArray_setProperty;
1996     definition.finalize = &CYFinalize;
1997     CArray::Class_ = JSClassCreate(&definition);
1998
1999     definition = kJSClassDefinitionEmpty;
2000     definition.className = "CString";
2001     definition.staticFunctions = CString_staticFunctions;
2002     definition.staticValues = CString_staticValues;
2003     definition.getProperty = &CString_getProperty;
2004     definition.setProperty = &CString_setProperty;
2005     definition.finalize = &CYFinalize;
2006     CString::Class_ = JSClassCreate(&definition);
2007
2008     definition = kJSClassDefinitionEmpty;
2009     definition.className = "Functor";
2010     definition.staticFunctions = cy::Functor::StaticFunctions;
2011     definition.staticValues = Functor_staticValues;
2012     definition.callAsFunction = &Functor_callAsFunction;
2013     definition.finalize = &CYFinalize;
2014     Functor_ = JSClassCreate(&definition);
2015
2016     definition = kJSClassDefinitionEmpty;
2017     definition.className = "Pointer";
2018     definition.staticFunctions = Pointer_staticFunctions;
2019     definition.staticValues = Pointer_staticValues;
2020     definition.callAsFunction = &Pointer_callAsFunction;
2021     definition.getProperty = &Pointer_getProperty;
2022     definition.setProperty = &Pointer_setProperty;
2023     definition.finalize = &CYFinalize;
2024     Pointer::Class_ = JSClassCreate(&definition);
2025
2026     definition = kJSClassDefinitionEmpty;
2027     definition.className = "Struct";
2028     definition.staticFunctions = Struct_staticFunctions;
2029     definition.staticValues = Struct_staticValues;
2030     definition.getProperty = &Struct_getProperty;
2031     definition.setProperty = &Struct_setProperty;
2032     definition.getPropertyNames = &Struct_getPropertyNames;
2033     definition.finalize = &CYFinalize;
2034     Struct_privateData::Class_ = JSClassCreate(&definition);
2035
2036     definition = kJSClassDefinitionEmpty;
2037     definition.className = "Type";
2038     definition.staticValues = Type_staticValues;
2039     definition.staticFunctions = Type_staticFunctions;
2040     definition.callAsFunction = &Type_callAsFunction;
2041     definition.callAsConstructor = &Type_callAsConstructor;
2042     definition.finalize = &CYFinalize;
2043     Type_privateData::Class_ = JSClassCreate(&definition);
2044
2045     definition = kJSClassDefinitionEmpty;
2046     definition.className = "Global";
2047     //definition.getProperty = &Global_getProperty;
2048     Global_ = JSClassCreate(&definition);
2049
2050     Array_s = JSStringCreateWithUTF8CString("Array");
2051     constructor_s = JSStringCreateWithUTF8CString("constructor");
2052     cy_s = JSStringCreateWithUTF8CString("$cy");
2053     cyi_s = JSStringCreateWithUTF8CString("$cyi");
2054     cyt_s = JSStringCreateWithUTF8CString("$cyt");
2055     length_s = JSStringCreateWithUTF8CString("length");
2056     message_s = JSStringCreateWithUTF8CString("message");
2057     name_s = JSStringCreateWithUTF8CString("name");
2058     pop_s = JSStringCreateWithUTF8CString("pop");
2059     prototype_s = JSStringCreateWithUTF8CString("prototype");
2060     push_s = JSStringCreateWithUTF8CString("push");
2061     splice_s = JSStringCreateWithUTF8CString("splice");
2062     toCYON_s = JSStringCreateWithUTF8CString("toCYON");
2063     toJSON_s = JSStringCreateWithUTF8CString("toJSON");
2064     toPointer_s = JSStringCreateWithUTF8CString("toPointer");
2065     toString_s = JSStringCreateWithUTF8CString("toString");
2066     weak_s = JSStringCreateWithUTF8CString("weak");
2067
2068     Result_ = JSStringCreateWithUTF8CString("_");
2069
2070     for (CYHook *hook : GetHooks())
2071         if (hook->Initialize != NULL)
2072             (*hook->Initialize)();
2073 }
2074
2075 void CYThrow(JSContextRef context, JSValueRef value) {
2076     if (value != NULL)
2077         throw CYJSError(context, value);
2078 }
2079
2080 const char *CYJSError::PoolCString(CYPool &pool) const {
2081     std::set<void *> objects;
2082     // XXX: this used to be CYPoolCString
2083     return CYPoolCCYON(pool, context_, value_, objects);
2084 }
2085
2086 JSValueRef CYJSError::CastJSValue(JSContextRef context, const char *name) const {
2087     // XXX: what if the context is different? or the name? I dunno. ("epic" :/)
2088     return value_;
2089 }
2090
2091 JSValueRef CYCastJSError(JSContextRef context, const char *name, const char *message) {
2092     JSObjectRef Error(CYGetCachedObject(context, CYJSString(name)));
2093     JSValueRef arguments[1] = {CYCastJSValue(context, message)};
2094     return _jsccall(JSObjectCallAsConstructor, context, Error, 1, arguments);
2095 }
2096
2097 JSValueRef CYPoolError::CastJSValue(JSContextRef context, const char *name) const {
2098     return CYCastJSError(context, name, message_);
2099 }
2100
2101 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
2102     _assert(context != NULL);
2103
2104     CYPool pool;
2105
2106     va_list args;
2107     va_start(args, format);
2108     // XXX: there might be a beter way to think about this
2109     const char *message(pool.vsprintf(64, format, args));
2110     va_end(args);
2111
2112     value_ = CYCastJSError(context, "Error", message);
2113 }
2114
2115 JSGlobalContextRef CYGetJSContext(JSContextRef context) {
2116     return reinterpret_cast<Context *>(JSObjectGetPrivate(CYCastJSObject(context, CYGetProperty(context, CYGetGlobalObject(context), cy_s))))->context_;
2117 }
2118
2119 const char *CYPoolLibraryPath(CYPool &pool) {
2120     Dl_info addr;
2121     _assert(dladdr(reinterpret_cast<void *>(&CYPoolLibraryPath), &addr) != 0);
2122     char *lib(pool.strdup(addr.dli_fname));
2123
2124     char *slash(strrchr(lib, '/'));
2125     if (slash == NULL)
2126         return ".";
2127     *slash = '\0';
2128
2129     slash = strrchr(lib, '/');
2130     if (slash != NULL) {
2131         if (strcmp(slash, "/.libs") == 0)
2132             *slash = '\0';
2133     } else if (strcmp(lib, ".libs") == 0)
2134         return ".";
2135
2136     return lib;
2137 }
2138
2139 static JSValueRef require_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
2140     _assert(count == 1);
2141     CYPool pool;
2142
2143     const char *name(CYPoolCString(pool, context, arguments[0]));
2144     if (strchr(name, '/') == NULL && (
2145 #ifdef __APPLE__
2146         dlopen(pool.strcat("/System/Library/Frameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2147         dlopen(pool.strcat("/System/Library/PrivateFrameworks/", name, ".framework/", name, NULL), RTLD_LAZY | RTLD_GLOBAL) != NULL ||
2148 #endif
2149     false))
2150         return CYJSUndefined(context);
2151
2152     JSObjectRef resolve(CYCastJSObject(context, CYGetProperty(context, object, CYJSString("resolve"))));
2153     CYJSString path(context, CYCallAsFunction(context, resolve, NULL, 1, arguments));
2154
2155     CYJSString property("exports");
2156
2157     JSObjectRef modules(CYGetCachedObject(context, CYJSString("modules")));
2158     JSValueRef cache(CYGetProperty(context, modules, path));
2159
2160     JSValueRef result;
2161     if (!JSValueIsUndefined(context, cache)) {
2162         JSObjectRef module(CYCastJSObject(context, cache));
2163         result = CYGetProperty(context, module, property);
2164     } else {
2165         CYUTF8String code(CYPoolFileUTF8String(pool, CYPoolCString(pool, context, path)));
2166         _assert(code.data != NULL);
2167
2168         size_t length(strlen(name));
2169         if (length >= 5 && strcmp(name + length - 5, ".json") == 0) {
2170             JSObjectRef JSON(CYGetCachedObject(context, CYJSString("JSON")));
2171             JSObjectRef parse(CYCastJSObject(context, CYGetProperty(context, JSON, CYJSString("parse"))));
2172             JSValueRef arguments[1] = { CYCastJSValue(context, CYJSString(code)) };
2173             result = CYCallAsFunction(context, parse, JSON, 1, arguments);
2174         } else {
2175             JSObjectRef module(JSObjectMake(context, NULL, NULL));
2176             CYSetProperty(context, modules, path, module);
2177
2178             JSObjectRef exports(JSObjectMake(context, NULL, NULL));
2179             CYSetProperty(context, module, property, exports);
2180
2181             std::stringstream wrap;
2182             wrap << "(function (exports, require, module, __filename) { " << code << "\n});";
2183             code = CYPoolCode(pool, *wrap.rdbuf());
2184
2185             JSValueRef value(_jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0));
2186             JSObjectRef function(CYCastJSObject(context, value));
2187
2188             JSValueRef arguments[4] = { exports, object, module, CYCastJSValue(context, path) };
2189             CYCallAsFunction(context, function, NULL, 4, arguments);
2190             result = CYGetProperty(context, module, property);
2191         }
2192     }
2193
2194     return result;
2195 } CYCatch(NULL) }
2196
2197 static bool CYRunScript(JSGlobalContextRef context, const char *path) {
2198     CYPool pool;
2199     CYUTF8String code(CYPoolFileUTF8String(pool, pool.strcat(CYPoolLibraryPath(pool), path, NULL)));
2200     if (code.data == NULL)
2201         return false;
2202
2203     code = CYPoolCode(pool, code);
2204     _jsccall(JSEvaluateScript, context, CYJSString(code), NULL, NULL, 0);
2205     return true;
2206 }
2207
2208 extern "C" void CYDestroyWeak(JSWeakObjectMapRef weak, void *data) {
2209 }
2210
2211 extern "C" void CYSetupContext(JSGlobalContextRef context) {
2212     CYInitializeDynamic();
2213
2214     JSObjectRef global(CYGetGlobalObject(context));
2215
2216     JSObjectRef cy(Context::Make(context, context));
2217     CYSetProperty(context, global, cy_s, cy, kJSPropertyAttributeDontEnum);
2218
2219 /* Cache Globals {{{ */
2220     JSObjectRef Array(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array"))));
2221     CYSetProperty(context, cy, CYJSString("Array"), Array);
2222
2223     JSObjectRef Array_prototype(CYCastJSObject(context, CYGetProperty(context, Array, prototype_s)));
2224     CYSetProperty(context, cy, CYJSString("Array_prototype"), Array_prototype);
2225
2226     JSObjectRef Boolean(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Boolean"))));
2227     CYSetProperty(context, cy, CYJSString("Boolean"), Boolean);
2228
2229     JSObjectRef Boolean_prototype(CYCastJSObject(context, CYGetProperty(context, Boolean, prototype_s)));
2230     CYSetProperty(context, cy, CYJSString("Boolean_prototype"), Boolean_prototype);
2231
2232     JSObjectRef Error(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error"))));
2233     CYSetProperty(context, cy, CYJSString("Error"), Error);
2234
2235     JSObjectRef Function(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function"))));
2236     CYSetProperty(context, cy, CYJSString("Function"), Function);
2237
2238     JSObjectRef Function_prototype(CYCastJSObject(context, CYGetProperty(context, Function, prototype_s)));
2239     CYSetProperty(context, cy, CYJSString("Function_prototype"), Function_prototype);
2240
2241     JSObjectRef JSON(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("JSON"))));
2242     CYSetProperty(context, cy, CYJSString("JSON"), JSON);
2243
2244     JSObjectRef Number(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Number"))));
2245     CYSetProperty(context, cy, CYJSString("Number"), Number);
2246
2247     JSObjectRef Number_prototype(CYCastJSObject(context, CYGetProperty(context, Number, prototype_s)));
2248     CYSetProperty(context, cy, CYJSString("Number_prototype"), Number_prototype);
2249
2250     JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
2251     CYSetProperty(context, cy, CYJSString("Object"), Object);
2252
2253     JSObjectRef Object_prototype(CYCastJSObject(context, CYGetProperty(context, Object, prototype_s)));
2254     CYSetProperty(context, cy, CYJSString("Object_prototype"), Object_prototype);
2255
2256     JSObjectRef String(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String"))));
2257     CYSetProperty(context, cy, CYJSString("String"), String);
2258
2259     JSObjectRef String_prototype(CYCastJSObject(context, CYGetProperty(context, String, prototype_s)));
2260     CYSetProperty(context, cy, CYJSString("String_prototype"), String_prototype);
2261
2262     JSObjectRef SyntaxError(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("SyntaxError"))));
2263     CYSetProperty(context, cy, CYJSString("SyntaxError"), SyntaxError);
2264 /* }}} */
2265
2266     CYSetProperty(context, Array_prototype, toCYON_s, &Array_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2267     CYSetProperty(context, String_prototype, toCYON_s, &String_callAsFunction_toCYON, kJSPropertyAttributeDontEnum);
2268
2269     JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
2270     CYSetProperty(context, global, CYJSString("Cycript"), cycript);
2271     CYSetProperty(context, cycript, CYJSString("compile"), &Cycript_compile_callAsFunction);
2272     CYSetProperty(context, cycript, CYJSString("gc"), &Cycript_gc_callAsFunction);
2273
2274     JSObjectRef CArray(JSObjectMakeConstructor(context, CArray::Class_, &CArray_new));
2275     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CArray, prototype_s)), Array_prototype);
2276     CYSetProperty(context, cycript, CYJSString("CArray"), CArray);
2277
2278     JSObjectRef CString(JSObjectMakeConstructor(context, CString::Class_, &CString_new));
2279     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, CString, prototype_s)), String_prototype);
2280     CYSetProperty(context, cycript, CYJSString("CString"), CString);
2281
2282     JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
2283     CYSetPrototype(context, CYCastJSObject(context, CYGetProperty(context, Functor, prototype_s)), Function_prototype);
2284     CYSetProperty(context, cycript, CYJSString("Functor"), Functor);
2285
2286     CYSetProperty(context, cycript, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer::Class_, &Pointer_new));
2287     CYSetProperty(context, cycript, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
2288
2289     JSObjectRef modules(JSObjectMake(context, NULL, NULL));
2290     CYSetProperty(context, cy, CYJSString("modules"), modules);
2291
2292     JSObjectRef all(JSObjectMake(context, All_, NULL));
2293     CYSetProperty(context, cycript, CYJSString("all"), all);
2294
2295     JSObjectRef cache(JSObjectMake(context, NULL, NULL));
2296     CYSetProperty(context, cy, CYJSString("cache"), cache);
2297     CYSetPrototype(context, cache, all);
2298
2299     JSObjectRef alls(_jsccall(JSObjectCallAsConstructor, context, Array, 0, NULL));
2300     CYSetProperty(context, cycript, CYJSString("alls"), alls);
2301
2302     if (true) {
2303         JSObjectRef last(NULL), curr(global);
2304
2305         goto next; for (JSValueRef next;;) {
2306             if (JSValueIsNull(context, next))
2307                 break;
2308             last = curr;
2309             curr = CYCastJSObject(context, next);
2310           next:
2311             next = JSObjectGetPrototype(context, curr);
2312         }
2313
2314         CYSetPrototype(context, last, cache);
2315     }
2316
2317     JSObjectRef System(JSObjectMake(context, NULL, NULL));
2318     CYSetProperty(context, cy, CYJSString("System"), System);
2319
2320     CYSetProperty(context, global, CYJSString("require"), &require_callAsFunction, kJSPropertyAttributeDontEnum);
2321
2322     CYSetProperty(context, global, CYJSString("system"), System);
2323     CYSetProperty(context, System, CYJSString("args"), CYJSNull(context));
2324     CYSetProperty(context, System, CYJSString("print"), &System_print);
2325
2326     CYSetProperty(context, global, CYJSString("global"), global);
2327
2328 #ifdef __APPLE__
2329     if (&JSWeakObjectMapCreate != NULL) {
2330         JSWeakObjectMapRef weak(JSWeakObjectMapCreate(context, NULL, &CYDestroyWeak));
2331         CYSetProperty(context, cy, weak_s, CYCastJSValue(context, reinterpret_cast<uintptr_t>(weak)));
2332     }
2333 #endif
2334
2335     CYSetProperty(context, String_prototype, cyt_s, CYMakeType(context, sig::String()), kJSPropertyAttributeDontEnum);
2336
2337     CYSetProperty(context, cache, CYJSString("dlerror"), CYMakeFunctor(context, "dlerror", "*"), kJSPropertyAttributeDontEnum);
2338     CYSetProperty(context, cache, CYJSString("RTLD_DEFAULT"), CYCastJSValue(context, reinterpret_cast<intptr_t>(RTLD_DEFAULT)), kJSPropertyAttributeDontEnum);
2339     CYSetProperty(context, cache, CYJSString("dlsym"), CYMakeFunctor(context, "dlsym", "^v^v*"), kJSPropertyAttributeDontEnum);
2340
2341     CYSetProperty(context, cache, CYJSString("NULL"), CYJSNull(context), kJSPropertyAttributeDontEnum);
2342
2343     CYSetProperty(context, cache, CYJSString("bool"), CYMakeType(context, sig::Primitive<bool>()), kJSPropertyAttributeDontEnum);
2344     CYSetProperty(context, cache, CYJSString("char"), CYMakeType(context, sig::Primitive<char>()), kJSPropertyAttributeDontEnum);
2345     CYSetProperty(context, cache, CYJSString("schar"), CYMakeType(context, sig::Primitive<signed char>()), kJSPropertyAttributeDontEnum);
2346     CYSetProperty(context, cache, CYJSString("uchar"), CYMakeType(context, sig::Primitive<unsigned char>()), kJSPropertyAttributeDontEnum);
2347
2348     CYSetProperty(context, cache, CYJSString("short"), CYMakeType(context, sig::Primitive<short>()), kJSPropertyAttributeDontEnum);
2349     CYSetProperty(context, cache, CYJSString("int"), CYMakeType(context, sig::Primitive<int>()), kJSPropertyAttributeDontEnum);
2350     CYSetProperty(context, cache, CYJSString("long"), CYMakeType(context, sig::Primitive<long>()), kJSPropertyAttributeDontEnum);
2351     CYSetProperty(context, cache, CYJSString("longlong"), CYMakeType(context, sig::Primitive<long long>()), kJSPropertyAttributeDontEnum);
2352
2353     CYSetProperty(context, cache, CYJSString("ushort"), CYMakeType(context, sig::Primitive<unsigned short>()), kJSPropertyAttributeDontEnum);
2354     CYSetProperty(context, cache, CYJSString("uint"), CYMakeType(context, sig::Primitive<unsigned int>()), kJSPropertyAttributeDontEnum);
2355     CYSetProperty(context, cache, CYJSString("ulong"), CYMakeType(context, sig::Primitive<unsigned long>()), kJSPropertyAttributeDontEnum);
2356     CYSetProperty(context, cache, CYJSString("ulonglong"), CYMakeType(context, sig::Primitive<unsigned long long>()), kJSPropertyAttributeDontEnum);
2357
2358 #ifdef __SIZEOF_INT128__
2359     CYSetProperty(context, cache, CYJSString("int128"), CYMakeType(context, sig::Primitive<__int128>()), kJSPropertyAttributeDontEnum);
2360     CYSetProperty(context, cache, CYJSString("uint128"), CYMakeType(context, sig::Primitive<unsigned __int128>()), kJSPropertyAttributeDontEnum);
2361 #endif
2362
2363     CYSetProperty(context, cache, CYJSString("float"), CYMakeType(context, sig::Primitive<float>()), kJSPropertyAttributeDontEnum);
2364     CYSetProperty(context, cache, CYJSString("double"), CYMakeType(context, sig::Primitive<double>()), kJSPropertyAttributeDontEnum);
2365
2366     for (CYHook *hook : GetHooks())
2367         if (hook->SetupContext != NULL)
2368             (*hook->SetupContext)(context);
2369
2370     CYArrayPush(context, alls, cycript);
2371
2372     CYRunScript(context, "/libcycript.cy");
2373 }
2374
2375 static JSGlobalContextRef context_;
2376
2377 _visible JSGlobalContextRef CYGetJSContext() {
2378     CYInitializeDynamic();
2379
2380     if (context_ == NULL) {
2381         context_ = JSGlobalContextCreate(Global_);
2382         CYSetupContext(context_);
2383     }
2384
2385     return context_;
2386 }
2387
2388 _visible void CYDestroyContext() {
2389     if (context_ == NULL)
2390         return;
2391     JSGlobalContextRelease(context_);
2392     context_ = NULL;
2393 }