Library.cpp

   1 /* Cycript - Inlining/Optimizing JavaScript Compiler
   2  * Copyright (C) 2009  Jay Freeman (saurik)
   3 */
   4
   5 /* Modified BSD License {{{ */
   6 /*
   7  *        Redistribution and use in source and binary
   8  * forms, with or without modification, are permitted
   9  * provided that the following conditions are met:
  10  *
  11  * 1. Redistributions of source code must retain the
  12  *    above copyright notice, this list of conditions
  13  *    and the following disclaimer.
  14  * 2. Redistributions in binary form must reproduce the
  15  *    above copyright notice, this list of conditions
  16  *    and the following disclaimer in the documentation
  17  *    and/or other materials provided with the
  18  *    distribution.
  19  * 3. The name of the author may not be used to endorse
  20  *    or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS''
  24  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING,
  25  * BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  26  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
  28  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  29  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  30  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  31  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  33  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  34  * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
  35  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  36  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  37 */
  38 /* }}} */
  39
  40 #include <sqlite3.h>
  41
  42 #include "Internal.hpp"
  43
  44 #include <dlfcn.h>
  45 #include <iconv.h>
  46
  47 #include "cycript.hpp"
  48
  49 #include "sig/parse.hpp"
  50 #include "sig/ffi_type.hpp"
  51
  52 #include "Pooling.hpp"
  53
  54 #include <sys/mman.h>
  55
  56 #include <iostream>
  57 #include <ext/stdio_filebuf.h>
  58 #include <set>
  59 #include <map>
  60 #include <iomanip>
  61 #include <sstream>
  62 #include <cmath>
  63
  64 #include "Parser.hpp"
  65 #include "Cycript.tab.hh"
  66
  67 #include "Error.hpp"
  68 #include "JavaScript.hpp"
  69 #include "String.hpp"
  70
  71 #ifdef __OBJC__
  72 #define CYCatch_ \
  73     catch (NSException *error) { \
  74         CYThrow(context, error, exception); \
  75         return NULL; \
  76     }
  77 #else
  78 #define CYCatch_
  79 #endif
  80
  81 char *sqlite3_column_pooled(apr_pool_t *pool, sqlite3_stmt *stmt, int n) {
  82     if (const unsigned char *value = sqlite3_column_text(stmt, n))
  83         return apr_pstrdup(pool, (const char *) value);
  84     else return NULL;
  85 }
  86
  87 struct CYHooks *hooks_;
  88
  89 /* JavaScript Properties {{{ */
  90 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, size_t index) {
  91     JSValueRef exception(NULL);
  92     JSValueRef value(JSObjectGetPropertyAtIndex(context, object, index, &exception));
  93     CYThrow(context, exception);
  94     return value;
  95 }
  96
  97 JSValueRef CYGetProperty(JSContextRef context, JSObjectRef object, JSStringRef name) {
  98     JSValueRef exception(NULL);
  99     JSValueRef value(JSObjectGetProperty(context, object, name, &exception));
 100     CYThrow(context, exception);
 101     return value;
 102 }
 103
 104 void CYSetProperty(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value) {
 105     JSValueRef exception(NULL);
 106     JSObjectSetPropertyAtIndex(context, object, index, value, &exception);
 107     CYThrow(context, exception);
 108 }
 109
 110 void CYSetProperty(JSContextRef context, JSObjectRef object, JSStringRef name, JSValueRef value, JSPropertyAttributes attributes) {
 111     JSValueRef exception(NULL);
 112     JSObjectSetProperty(context, object, name, value, attributes, &exception);
 113     CYThrow(context, exception);
 114 }
 115 /* }}} */
 116 /* JavaScript Strings {{{ */
 117 JSStringRef CYCopyJSString(const char *value) {
 118     return value == NULL ? NULL : JSStringCreateWithUTF8CString(value);
 119 }
 120
 121 JSStringRef CYCopyJSString(JSStringRef value) {
 122     return value == NULL ? NULL : JSStringRetain(value);
 123 }
 124
 125 JSStringRef CYCopyJSString(CYUTF8String value) {
 126     // XXX: this is very wrong
 127     return CYCopyJSString(value.data);
 128 }
 129
 130 JSStringRef CYCopyJSString(JSContextRef context, JSValueRef value) {
 131     if (JSValueIsNull(context, value))
 132         return NULL;
 133     JSValueRef exception(NULL);
 134     JSStringRef string(JSValueToStringCopy(context, value, &exception));
 135     CYThrow(context, exception);
 136     return string;
 137 }
 138
 139 static CYUTF16String CYCastUTF16String(JSStringRef value) {
 140     return CYUTF16String(JSStringGetCharactersPtr(value), JSStringGetLength(value));
 141 }
 142
 143 template <typename Type_>
 144 _finline size_t iconv_(size_t (*iconv)(iconv_t, Type_, size_t *, char **, size_t *), iconv_t cd, char **inbuf, size_t *inbytesleft, char **outbuf, size_t *outbytesleft) {
 145     return iconv(cd, const_cast<Type_>(inbuf), inbytesleft, outbuf, outbytesleft);
 146 }
 147
 148 static CYUTF8String CYPoolUTF8String(apr_pool_t *pool, JSContextRef context, JSStringRef value) {
 149     _assert(pool != NULL);
 150
 151     CYUTF16String utf16(CYCastUTF16String(value));
 152     const char *in(reinterpret_cast<const char *>(utf16.data));
 153
 154 #ifdef __APPLE__
 155     iconv_t conversion(_syscall(iconv_open("UTF-8", "UCS-2-INTERNAL")));
 156 #else
 157     iconv_t conversion(_syscall(iconv_open("UTF-8", "UCS-2")));
 158 #endif
 159
 160     size_t size(JSStringGetMaximumUTF8CStringSize(value));
 161     char *out(new(pool) char[size]);
 162     CYUTF8String utf8(out, size);
 163
 164     size = utf16.size * 2;
 165     _syscall(iconv_(&iconv, conversion, const_cast<char **>(&in), &size, &out, &utf8.size));
 166
 167     *out = '\0';
 168     utf8.size = out - utf8.data;
 169
 170     _syscall(iconv_close(conversion));
 171
 172     return utf8;
 173 }
 174
 175 const char *CYPoolCString(apr_pool_t *pool, JSContextRef context, JSStringRef value) {
 176     CYUTF8String utf8(CYPoolUTF8String(pool, context, value));
 177     _assert(memchr(utf8.data, '\0', utf8.size) == NULL);
 178     return utf8.data;
 179 }
 180
 181 const char *CYPoolCString(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 182     return JSValueIsNull(context, value) ? NULL : CYPoolCString(pool, context, CYJSString(context, value));
 183 }
 184 /* }}} */
 185
 186 /* Index Offsets {{{ */
 187 size_t CYGetIndex(const CYUTF8String &value) {
 188     if (value.data[0] != '0') {
 189         char *end;
 190         size_t index(strtoul(value.data, &end, 10));
 191         if (value.data + value.size == end)
 192             return index;
 193     } else if (value.data[1] == '\0')
 194         return 0;
 195     return _not(size_t);
 196 }
 197
 198 size_t CYGetIndex(apr_pool_t *pool, JSContextRef context, JSStringRef value) {
 199     return CYGetIndex(CYPoolUTF8String(pool, context, value));
 200 }
 201
 202 bool CYGetOffset(const char *value, ssize_t &index) {
 203     if (value[0] != '0') {
 204         char *end;
 205         index = strtol(value, &end, 10);
 206         if (value + strlen(value) == end)
 207             return true;
 208     } else if (value[1] == '\0') {
 209         index = 0;
 210         return true;
 211     }
 212
 213     return false;
 214 }
 215 /* }}} */
 216
 217 /* JavaScript *ify {{{ */
 218 void CYStringify(std::ostringstream &str, const char *data, size_t size) {
 219     unsigned quot(0), apos(0);
 220     for (const char *value(data), *end(data + size); value != end; ++value)
 221         if (*value == '"')
 222             ++quot;
 223         else if (*value == '\'')
 224             ++apos;
 225
 226     bool single(quot > apos);
 227
 228     str << (single ? '\'' : '"');
 229
 230     for (const char *value(data), *end(data + size); value != end; ++value)
 231         switch (*value) {
 232             case '\\': str << "\\\\"; break;
 233             case '\b': str << "\\b"; break;
 234             case '\f': str << "\\f"; break;
 235             case '\n': str << "\\n"; break;
 236             case '\r': str << "\\r"; break;
 237             case '\t': str << "\\t"; break;
 238             case '\v': str << "\\v"; break;
 239
 240             case '"':
 241                 if (!single)
 242                     str << "\\\"";
 243                 else goto simple;
 244             break;
 245
 246             case '\'':
 247                 if (single)
 248                     str << "\\'";
 249                 else goto simple;
 250             break;
 251
 252             default:
 253                 if (*value < 0x20 || *value >= 0x7f)
 254                     str << "\\x" << std::setbase(16) << std::setw(2) << std::setfill('0') << unsigned(*value);
 255                 else simple:
 256                     str << *value;
 257         }
 258
 259     str << (single ? '\'' : '"');
 260 }
 261
 262 void CYNumerify(std::ostringstream &str, double value) {
 263     char string[32];
 264     // XXX: I want this to print 1e3 rather than 1000
 265     sprintf(string, "%.17g", value);
 266     str << string;
 267 }
 268
 269 bool CYIsKey(CYUTF8String value) {
 270     const char *data(value.data);
 271     size_t size(value.size);
 272
 273     if (size == 0)
 274         return false;
 275
 276     if (DigitRange_[data[0]]) {
 277         size_t index(CYGetIndex(value));
 278         if (index == _not(size_t))
 279             return false;
 280     } else {
 281         if (!WordStartRange_[data[0]])
 282             return false;
 283         for (size_t i(1); i != size; ++i)
 284             if (!WordEndRange_[data[i]])
 285                 return false;
 286     }
 287
 288     return true;
 289 }
 290 /* }}} */
 291
 292 static JSGlobalContextRef Context_;
 293 static JSObjectRef System_;
 294
 295 static JSClassRef Functor_;
 296 static JSClassRef Pointer_;
 297 static JSClassRef Runtime_;
 298 static JSClassRef Struct_;
 299
 300 static JSStringRef Result_;
 301
 302 JSObjectRef Array_;
 303 JSObjectRef Error_;
 304 JSObjectRef Function_;
 305 JSObjectRef String_;
 306
 307 JSStringRef length_;
 308 JSStringRef message_;
 309 JSStringRef name_;
 310 JSStringRef prototype_;
 311 JSStringRef toCYON_;
 312 JSStringRef toJSON_;
 313
 314 JSObjectRef Object_prototype_;
 315 JSObjectRef Function_prototype_;
 316
 317 JSObjectRef Array_prototype_;
 318 JSObjectRef Array_pop_;
 319 JSObjectRef Array_push_;
 320 JSObjectRef Array_splice_;
 321
 322 sqlite3 *Bridge_;
 323
 324 void CYFinalize(JSObjectRef object) {
 325     delete reinterpret_cast<CYData *>(JSObjectGetPrivate(object));
 326 }
 327
 328 struct CStringMapLess :
 329     std::binary_function<const char *, const char *, bool>
 330 {
 331     _finline bool operator ()(const char *lhs, const char *rhs) const {
 332         return strcmp(lhs, rhs) < 0;
 333     }
 334 };
 335
 336 void Structor_(apr_pool_t *pool, const char *name, const char *types, sig::Type *&type) {
 337     if (name == NULL)
 338         return;
 339
 340     sqlite3_stmt *statement;
 341
 342     _sqlcall(sqlite3_prepare(Bridge_,
 343         "select "
 344             "\"bridge\".\"mode\", "
 345             "\"bridge\".\"value\" "
 346         "from \"bridge\" "
 347         "where"
 348             " \"bridge\".\"mode\" in (3, 4) and"
 349             " \"bridge\".\"name\" = ?"
 350         " limit 1"
 351     , -1, &statement, NULL));
 352
 353     _sqlcall(sqlite3_bind_text(statement, 1, name, -1, SQLITE_STATIC));
 354
 355     int mode;
 356     const char *value;
 357
 358     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE) {
 359         mode = -1;
 360         value = NULL;
 361     } else {
 362         mode = sqlite3_column_int(statement, 0);
 363         value = sqlite3_column_pooled(pool, statement, 1);
 364     }
 365
 366     _sqlcall(sqlite3_finalize(statement));
 367
 368     switch (mode) {
 369         default:
 370             _assert(false);
 371         case -1:
 372             break;
 373
 374         case 3: {
 375             sig::Parse(pool, &type->data.signature, value, &Structor_);
 376         } break;
 377
 378         case 4: {
 379             sig::Signature signature;
 380             sig::Parse(pool, &signature, value, &Structor_);
 381             type = signature.elements[0].type;
 382         } break;
 383     }
 384 }
 385
 386 JSClassRef Type_privateData::Class_;
 387
 388 struct Pointer :
 389     CYOwned
 390 {
 391     Type_privateData *type_;
 392
 393     Pointer(void *value, JSContextRef context, JSObjectRef owner, sig::Type *type) :
 394         CYOwned(value, context, owner),
 395         type_(new(pool_) Type_privateData(type))
 396     {
 397     }
 398 };
 399
 400 struct Struct_privateData :
 401     CYOwned
 402 {
 403     Type_privateData *type_;
 404
 405     Struct_privateData(JSContextRef context, JSObjectRef owner) :
 406         CYOwned(NULL, context, owner)
 407     {
 408     }
 409 };
 410
 411 typedef std::map<const char *, Type_privateData *, CStringMapLess> TypeMap;
 412 static TypeMap Types_;
 413
 414 JSObjectRef CYMakeStruct(JSContextRef context, void *data, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 415     Struct_privateData *internal(new Struct_privateData(context, owner));
 416     apr_pool_t *pool(internal->pool_);
 417     Type_privateData *typical(new(pool) Type_privateData(type, ffi));
 418     internal->type_ = typical;
 419
 420     if (owner != NULL)
 421         internal->value_ = data;
 422     else {
 423         size_t size(typical->GetFFI()->size);
 424         void *copy(apr_palloc(internal->pool_, size));
 425         memcpy(copy, data, size);
 426         internal->value_ = copy;
 427     }
 428
 429     return JSObjectMake(context, Struct_, internal);
 430 }
 431
 432 JSValueRef CYCastJSValue(JSContextRef context, bool value) {
 433     return JSValueMakeBoolean(context, value);
 434 }
 435
 436 JSValueRef CYCastJSValue(JSContextRef context, double value) {
 437     return JSValueMakeNumber(context, value);
 438 }
 439
 440 #define CYCastJSValue_(Type_) \
 441     JSValueRef CYCastJSValue(JSContextRef context, Type_ value) { \
 442         return JSValueMakeNumber(context, static_cast<double>(value)); \
 443     }
 444
 445 CYCastJSValue_(int)
 446 CYCastJSValue_(unsigned int)
 447 CYCastJSValue_(long int)
 448 CYCastJSValue_(long unsigned int)
 449 CYCastJSValue_(long long int)
 450 CYCastJSValue_(long long unsigned int)
 451
 452 JSValueRef CYJSUndefined(JSContextRef context) {
 453     return JSValueMakeUndefined(context);
 454 }
 455
 456 double CYCastDouble(const char *value, size_t size) {
 457     char *end;
 458     double number(strtod(value, &end));
 459     if (end != value + size)
 460         return NAN;
 461     return number;
 462 }
 463
 464 double CYCastDouble(const char *value) {
 465     return CYCastDouble(value, strlen(value));
 466 }
 467
 468 double CYCastDouble(JSContextRef context, JSValueRef value) {
 469     JSValueRef exception(NULL);
 470     double number(JSValueToNumber(context, value, &exception));
 471     CYThrow(context, exception);
 472     return number;
 473 }
 474
 475 bool CYCastBool(JSContextRef context, JSValueRef value) {
 476     return JSValueToBoolean(context, value);
 477 }
 478
 479 JSValueRef CYJSNull(JSContextRef context) {
 480     return JSValueMakeNull(context);
 481 }
 482
 483 JSValueRef CYCastJSValue(JSContextRef context, JSStringRef value) {
 484     return value == NULL ? CYJSNull(context) : JSValueMakeString(context, value);
 485 }
 486
 487 JSValueRef CYCastJSValue(JSContextRef context, const char *value) {
 488     return CYCastJSValue(context, CYJSString(value));
 489 }
 490
 491 JSObjectRef CYCastJSObject(JSContextRef context, JSValueRef value) {
 492     JSValueRef exception(NULL);
 493     JSObjectRef object(JSValueToObject(context, value, &exception));
 494     CYThrow(context, exception);
 495     return object;
 496 }
 497
 498 JSValueRef CYCallAsFunction(JSContextRef context, JSObjectRef function, JSObjectRef _this, size_t count, JSValueRef arguments[]) {
 499     JSValueRef exception(NULL);
 500     JSValueRef value(JSObjectCallAsFunction(context, function, _this, count, arguments, &exception));
 501     CYThrow(context, exception);
 502     return value;
 503 }
 504
 505 bool CYIsCallable(JSContextRef context, JSValueRef value) {
 506     return value != NULL && JSValueIsObject(context, value) && JSObjectIsFunction(context, (JSObjectRef) value);
 507 }
 508
 509 static JSValueRef System_print(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 510     if (count == 0)
 511         printf("\n");
 512     else {
 513         CYPool pool;
 514         printf("%s\n", CYPoolCString(pool, context, arguments[0]));
 515     }
 516
 517     return CYJSUndefined(context);
 518 } CYCatch }
 519
 520 static size_t Nonce_(0);
 521
 522 static JSValueRef $cyq(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 523     CYPool pool;
 524     const char *name(apr_psprintf(pool, "%s%zu", CYPoolCString(pool, context, arguments[0]), Nonce_++));
 525     return CYCastJSValue(context, name);
 526 }
 527
 528 static JSValueRef Cycript_gc_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 529     JSGarbageCollect(context);
 530     return CYJSUndefined(context);
 531 }
 532
 533 const char *CYPoolCCYON(apr_pool_t *pool, JSContextRef context, JSValueRef value, JSValueRef *exception) { CYTry {
 534     switch (JSType type = JSValueGetType(context, value)) {
 535         case kJSTypeUndefined:
 536             return "undefined";
 537         case kJSTypeNull:
 538             return "null";
 539         case kJSTypeBoolean:
 540             return CYCastBool(context, value) ? "true" : "false";
 541
 542         case kJSTypeNumber: {
 543             std::ostringstream str;
 544             CYNumerify(str, CYCastDouble(context, value));
 545             std::string value(str.str());
 546             return apr_pstrmemdup(pool, value.c_str(), value.size());
 547         } break;
 548
 549         case kJSTypeString: {
 550             std::ostringstream str;
 551             CYUTF8String string(CYPoolUTF8String(pool, context, CYJSString(context, value)));
 552             CYStringify(str, string.data, string.size);
 553             std::string value(str.str());
 554             return apr_pstrmemdup(pool, value.c_str(), value.size());
 555         } break;
 556
 557         case kJSTypeObject:
 558             return CYPoolCCYON(pool, context, (JSObjectRef) value);
 559         default:
 560             throw CYJSError(context, "JSValueGetType() == 0x%x", type);
 561     }
 562 } CYCatch }
 563
 564 const char *CYPoolCCYON(apr_pool_t *pool, JSContextRef context, JSValueRef value) {
 565     JSValueRef exception(NULL);
 566     const char *cyon(CYPoolCCYON(pool, context, value, &exception));
 567     CYThrow(context, exception);
 568     return cyon;
 569 }
 570
 571 const char *CYPoolCCYON(apr_pool_t *pool, JSContextRef context, JSObjectRef object) {
 572     JSValueRef toCYON(CYGetProperty(context, object, toCYON_));
 573     if (CYIsCallable(context, toCYON)) {
 574         JSValueRef value(CYCallAsFunction(context, (JSObjectRef) toCYON, object, 0, NULL));
 575         return CYPoolCString(pool, context, value);
 576     }
 577
 578     JSValueRef toJSON(CYGetProperty(context, object, toJSON_));
 579     if (CYIsCallable(context, toJSON)) {
 580         JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(""))};
 581         JSValueRef exception(NULL);
 582         const char *cyon(CYPoolCCYON(pool, context, CYCallAsFunction(context, (JSObjectRef) toJSON, object, 1, arguments), &exception));
 583         CYThrow(context, exception);
 584         return cyon;
 585     }
 586
 587     std::ostringstream str;
 588
 589     str << '{';
 590
 591     // XXX: this is, sadly, going to leak
 592     JSPropertyNameArrayRef names(JSObjectCopyPropertyNames(context, object));
 593
 594     bool comma(false);
 595
 596     for (size_t index(0), count(JSPropertyNameArrayGetCount(names)); index != count; ++index) {
 597         JSStringRef name(JSPropertyNameArrayGetNameAtIndex(names, index));
 598         JSValueRef value(CYGetProperty(context, object, name));
 599
 600         if (comma)
 601             str << ',';
 602         else
 603             comma = true;
 604
 605         CYUTF8String string(CYPoolUTF8String(pool, context, name));
 606         if (CYIsKey(string))
 607             str << string.data;
 608         else
 609             CYStringify(str, string.data, string.size);
 610
 611         str << ':' << CYPoolCCYON(pool, context, value);
 612     }
 613
 614     str << '}';
 615
 616     JSPropertyNameArrayRelease(names);
 617
 618     std::string string(str.str());
 619     return apr_pstrmemdup(pool, string.c_str(), string.size());
 620 }
 621
 622 static JSValueRef Array_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
 623     CYPool pool;
 624     std::ostringstream str;
 625
 626     str << '[';
 627
 628     JSValueRef length(CYGetProperty(context, _this, length_));
 629     bool comma(false);
 630
 631     for (size_t index(0), count(CYCastDouble(context, length)); index != count; ++index) {
 632         JSValueRef value(CYGetProperty(context, _this, index));
 633
 634         if (comma)
 635             str << ',';
 636         else
 637             comma = true;
 638
 639         if (!JSValueIsUndefined(context, value))
 640             str << CYPoolCCYON(pool, context, value);
 641         else {
 642             str << ',';
 643             comma = false;
 644         }
 645     }
 646
 647     str << ']';
 648
 649     std::string value(str.str());
 650     return CYCastJSValue(context, CYJSString(CYUTF8String(value.c_str(), value.size())));
 651 } CYCatch }
 652
 653 JSObjectRef CYMakePointer(JSContextRef context, void *pointer, sig::Type *type, ffi_type *ffi, JSObjectRef owner) {
 654     Pointer *internal(new Pointer(pointer, context, owner, type));
 655     return JSObjectMake(context, Pointer_, internal);
 656 }
 657
 658 static JSObjectRef CYMakeFunctor(JSContextRef context, void (*function)(), const char *type) {
 659     cy::Functor *internal(new cy::Functor(type, function));
 660     return JSObjectMake(context, Functor_, internal);
 661 }
 662
 663 static bool CYGetOffset(apr_pool_t *pool, JSContextRef context, JSStringRef value, ssize_t &index) {
 664     return CYGetOffset(CYPoolCString(pool, context, value), index);
 665 }
 666
 667 void *CYCastPointer_(JSContextRef context, JSValueRef value) {
 668     switch (JSValueGetType(context, value)) {
 669         case kJSTypeNull:
 670             return NULL;
 671         /*case kJSTypeObject:
 672             if (JSValueIsObjectOfClass(context, value, Pointer_)) {
 673                 Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate((JSObjectRef) value)));
 674                 return internal->value_;
 675             }*/
 676         default:
 677             double number(CYCastDouble(context, value));
 678             if (std::isnan(number))
 679                 throw CYJSError(context, "cannot convert value to pointer");
 680             return reinterpret_cast<void *>(static_cast<uintptr_t>(static_cast<long long>(number)));
 681     }
 682 }
 683
 684 void CYPoolFFI(apr_pool_t *pool, JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, JSValueRef value) {
 685     switch (type->primitive) {
 686         case sig::boolean_P:
 687             *reinterpret_cast<bool *>(data) = JSValueToBoolean(context, value);
 688         break;
 689
 690 #define CYPoolFFI_(primitive, native) \
 691         case sig::primitive ## _P: \
 692             *reinterpret_cast<native *>(data) = CYCastDouble(context, value); \
 693         break;
 694
 695         CYPoolFFI_(uchar, unsigned char)
 696         CYPoolFFI_(char, char)
 697         CYPoolFFI_(ushort, unsigned short)
 698         CYPoolFFI_(short, short)
 699         CYPoolFFI_(ulong, unsigned long)
 700         CYPoolFFI_(long, long)
 701         CYPoolFFI_(uint, unsigned int)
 702         CYPoolFFI_(int, int)
 703         CYPoolFFI_(ulonglong, unsigned long long)
 704         CYPoolFFI_(longlong, long long)
 705         CYPoolFFI_(float, float)
 706         CYPoolFFI_(double, double)
 707
 708         case sig::pointer_P:
 709             *reinterpret_cast<void **>(data) = CYCastPointer<void *>(context, value);
 710         break;
 711
 712         case sig::string_P:
 713             *reinterpret_cast<const char **>(data) = CYPoolCString(pool, context, value);
 714         break;
 715
 716         case sig::struct_P: {
 717             uint8_t *base(reinterpret_cast<uint8_t *>(data));
 718             JSObjectRef aggregate(JSValueIsObject(context, value) ? (JSObjectRef) value : NULL);
 719             for (size_t index(0); index != type->data.signature.count; ++index) {
 720                 sig::Element *element(&type->data.signature.elements[index]);
 721                 ffi_type *field(ffi->elements[index]);
 722
 723                 JSValueRef rhs;
 724                 if (aggregate == NULL)
 725                     rhs = value;
 726                 else {
 727                     rhs = CYGetProperty(context, aggregate, index);
 728                     if (JSValueIsUndefined(context, rhs)) {
 729                         if (element->name != NULL)
 730                             rhs = CYGetProperty(context, aggregate, CYJSString(element->name));
 731                         else
 732                             goto undefined;
 733                         if (JSValueIsUndefined(context, rhs)) undefined:
 734                             throw CYJSError(context, "unable to extract structure value");
 735                     }
 736                 }
 737
 738                 CYPoolFFI(pool, context, element->type, field, base, rhs);
 739                 // XXX: alignment?
 740                 base += field->size;
 741             }
 742         } break;
 743
 744         case sig::void_P:
 745         break;
 746
 747         default:
 748             if (hooks_ != NULL && hooks_->PoolFFI != NULL)
 749                 if ((*hooks_->PoolFFI)(pool, context, type, ffi, data, value))
 750                     return;
 751
 752             fprintf(stderr, "CYPoolFFI(%c)\n", type->primitive);
 753             _assert(false);
 754     }
 755 }
 756
 757 JSValueRef CYFromFFI(JSContextRef context, sig::Type *type, ffi_type *ffi, void *data, bool initialize, JSObjectRef owner) {
 758     switch (type->primitive) {
 759         case sig::boolean_P:
 760             return CYCastJSValue(context, *reinterpret_cast<bool *>(data));
 761
 762 #define CYFromFFI_(primitive, native) \
 763         case sig::primitive ## _P: \
 764             return CYCastJSValue(context, *reinterpret_cast<native *>(data)); \
 765
 766         CYFromFFI_(uchar, unsigned char)
 767         CYFromFFI_(char, char)
 768         CYFromFFI_(ushort, unsigned short)
 769         CYFromFFI_(short, short)
 770         CYFromFFI_(ulong, unsigned long)
 771         CYFromFFI_(long, long)
 772         CYFromFFI_(uint, unsigned int)
 773         CYFromFFI_(int, int)
 774         CYFromFFI_(ulonglong, unsigned long long)
 775         CYFromFFI_(longlong, long long)
 776         CYFromFFI_(float, float)
 777         CYFromFFI_(double, double)
 778
 779         case sig::pointer_P:
 780             if (void *pointer = *reinterpret_cast<void **>(data))
 781                 return CYMakePointer(context, pointer, type->data.data.type, ffi, owner);
 782             else goto null;
 783
 784         case sig::string_P:
 785             if (char *utf8 = *reinterpret_cast<char **>(data))
 786                 return CYCastJSValue(context, utf8);
 787             else goto null;
 788
 789         case sig::struct_P:
 790             return CYMakeStruct(context, data, type, ffi, owner);
 791         case sig::void_P:
 792             return CYJSUndefined(context);
 793
 794         null:
 795             return CYJSNull(context);
 796         default:
 797             if (hooks_ != NULL && hooks_->FromFFI != NULL)
 798                 if (JSValueRef value = (*hooks_->FromFFI)(context, type, ffi, data, initialize, owner))
 799                     return value;
 800
 801             fprintf(stderr, "CYFromFFI(%c)\n", type->primitive);
 802             _assert(false);
 803     }
 804 }
 805
 806 static void FunctionClosure_(ffi_cif *cif, void *result, void **arguments, void *arg) {
 807     Closure_privateData *internal(reinterpret_cast<Closure_privateData *>(arg));
 808
 809     JSContextRef context(internal->context_);
 810
 811     size_t count(internal->cif_.nargs);
 812     JSValueRef values[count];
 813
 814     for (size_t index(0); index != count; ++index)
 815         values[index] = CYFromFFI(context, internal->signature_.elements[1 + index].type, internal->cif_.arg_types[index], arguments[index]);
 816
 817     JSValueRef value(CYCallAsFunction(context, internal->function_, NULL, count, values));
 818     CYPoolFFI(NULL, context, internal->signature_.elements[0].type, internal->cif_.rtype, result, value);
 819 }
 820
 821 Closure_privateData *CYMakeFunctor_(JSContextRef context, JSObjectRef function, const char *type, void (*callback)(ffi_cif *, void *, void **, void *)) {
 822     // XXX: in case of exceptions this will leak
 823     // XXX: in point of fact, this may /need/ to leak :(
 824     Closure_privateData *internal(new Closure_privateData(CYGetJSContext(), function, type));
 825
 826     ffi_closure *closure((ffi_closure *) _syscall(mmap(
 827         NULL, sizeof(ffi_closure),
 828         PROT_READ | PROT_WRITE, MAP_ANON | MAP_PRIVATE,
 829         -1, 0
 830     )));
 831
 832     ffi_status status(ffi_prep_closure(closure, &internal->cif_, callback, internal));
 833     _assert(status == FFI_OK);
 834
 835     _syscall(mprotect(closure, sizeof(*closure), PROT_READ | PROT_EXEC));
 836
 837     internal->value_ = closure;
 838
 839     return internal;
 840 }
 841
 842 static JSObjectRef CYMakeFunctor(JSContextRef context, JSObjectRef function, const char *type) {
 843     Closure_privateData *internal(CYMakeFunctor_(context, function, type, &FunctionClosure_));
 844     return JSObjectMake(context, Functor_, internal);
 845 }
 846
 847 static JSObjectRef CYMakeFunctor(JSContextRef context, JSValueRef value, const char *type) {
 848     JSValueRef exception(NULL);
 849     bool function(JSValueIsInstanceOfConstructor(context, value, Function_, &exception));
 850     CYThrow(context, exception);
 851
 852     if (function) {
 853         JSObjectRef function(CYCastJSObject(context, value));
 854         return CYMakeFunctor(context, function, type);
 855     } else {
 856         void (*function)()(CYCastPointer<void (*)()>(context, value));
 857         return CYMakeFunctor(context, function, type);
 858     }
 859 }
 860
 861 static bool Index_(apr_pool_t *pool, JSContextRef context, Struct_privateData *internal, JSStringRef property, ssize_t &index, uint8_t *&base) {
 862     Type_privateData *typical(internal->type_);
 863     sig::Type *type(typical->type_);
 864     if (type == NULL)
 865         return false;
 866
 867     const char *name(CYPoolCString(pool, context, property));
 868     size_t length(strlen(name));
 869     double number(CYCastDouble(name, length));
 870
 871     size_t count(type->data.signature.count);
 872
 873     if (std::isnan(number)) {
 874         if (property == NULL)
 875             return false;
 876
 877         sig::Element *elements(type->data.signature.elements);
 878
 879         for (size_t local(0); local != count; ++local) {
 880             sig::Element *element(&elements[local]);
 881             if (element->name != NULL && strcmp(name, element->name) == 0) {
 882                 index = local;
 883                 goto base;
 884             }
 885         }
 886
 887         return false;
 888     } else {
 889         index = static_cast<ssize_t>(number);
 890         if (index != number || index < 0 || static_cast<size_t>(index) >= count)
 891             return false;
 892     }
 893
 894   base:
 895     ffi_type **elements(typical->GetFFI()->elements);
 896
 897     base = reinterpret_cast<uint8_t *>(internal->value_);
 898     for (ssize_t local(0); local != index; ++local)
 899         base += elements[local]->size;
 900
 901     return true;
 902 }
 903
 904 static JSValueRef Pointer_getIndex(JSContextRef context, JSObjectRef object, size_t index, JSValueRef *exception) { CYTry {
 905     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 906     Type_privateData *typical(internal->type_);
 907
 908     ffi_type *ffi(typical->GetFFI());
 909
 910     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 911     base += ffi->size * index;
 912
 913     JSObjectRef owner(internal->GetOwner() ?: object);
 914     return CYFromFFI(context, typical->type_, ffi, base, false, owner);
 915 } CYCatch }
 916
 917 static JSValueRef Pointer_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
 918     CYPool pool;
 919     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 920     Type_privateData *typical(internal->type_);
 921
 922     if (typical->type_ == NULL)
 923         return NULL;
 924
 925     ssize_t offset;
 926     if (!CYGetOffset(pool, context, property, offset))
 927         return NULL;
 928
 929     return Pointer_getIndex(context, object, offset, exception);
 930 }
 931
 932 static JSValueRef Pointer_getProperty_$cyi(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) {
 933     return Pointer_getIndex(context, object, 0, exception);
 934 }
 935
 936 static bool Pointer_setIndex(JSContextRef context, JSObjectRef object, size_t index, JSValueRef value, JSValueRef *exception) { CYTry {
 937     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 938     Type_privateData *typical(internal->type_);
 939
 940     ffi_type *ffi(typical->GetFFI());
 941
 942     uint8_t *base(reinterpret_cast<uint8_t *>(internal->value_));
 943     base += ffi->size * index;
 944
 945     CYPoolFFI(NULL, context, typical->type_, ffi, base, value);
 946     return true;
 947 } CYCatch }
 948
 949 static bool Pointer_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) {
 950     CYPool pool;
 951     Pointer *internal(reinterpret_cast<Pointer *>(JSObjectGetPrivate(object)));
 952     Type_privateData *typical(internal->type_);
 953
 954     if (typical->type_ == NULL)
 955         return NULL;
 956
 957     ssize_t offset;
 958     if (!CYGetOffset(pool, context, property, offset))
 959         return NULL;
 960
 961     return Pointer_setIndex(context, object, offset, value, exception);
 962 }
 963
 964 static bool Pointer_setProperty_$cyi(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) {
 965     return Pointer_setIndex(context, object, 0, value, exception);
 966 }
 967
 968 static JSValueRef Struct_callAsFunction_$cya(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
 969     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(_this)));
 970     Type_privateData *typical(internal->type_);
 971     return CYMakePointer(context, internal->value_, typical->type_, typical->ffi_, _this);
 972 }
 973
 974 static JSValueRef Struct_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
 975     CYPool pool;
 976     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 977     Type_privateData *typical(internal->type_);
 978
 979     ssize_t index;
 980     uint8_t *base;
 981
 982     if (!Index_(pool, context, internal, property, index, base))
 983         return NULL;
 984
 985     JSObjectRef owner(internal->GetOwner() ?: object);
 986
 987     return CYFromFFI(context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, false, owner);
 988 } CYCatch }
 989
 990 static bool Struct_setProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef value, JSValueRef *exception) { CYTry {
 991     CYPool pool;
 992     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
 993     Type_privateData *typical(internal->type_);
 994
 995     ssize_t index;
 996     uint8_t *base;
 997
 998     if (!Index_(pool, context, internal, property, index, base))
 999         return false;
1000
1001     CYPoolFFI(NULL, context, typical->type_->data.signature.elements[index].type, typical->GetFFI()->elements[index], base, value);
1002     return true;
1003 } CYCatch }
1004
1005 static void Struct_getPropertyNames(JSContextRef context, JSObjectRef object, JSPropertyNameAccumulatorRef names) {
1006     Struct_privateData *internal(reinterpret_cast<Struct_privateData *>(JSObjectGetPrivate(object)));
1007     Type_privateData *typical(internal->type_);
1008     sig::Type *type(typical->type_);
1009
1010     if (type == NULL)
1011         return;
1012
1013     size_t count(type->data.signature.count);
1014     sig::Element *elements(type->data.signature.elements);
1015
1016     char number[32];
1017
1018     for (size_t index(0); index != count; ++index) {
1019         const char *name;
1020         name = elements[index].name;
1021
1022         if (name == NULL) {
1023             sprintf(number, "%lu", index);
1024             name = number;
1025         }
1026
1027         JSPropertyNameAccumulatorAddName(names, CYJSString(name));
1028     }
1029 }
1030
1031 JSValueRef CYCallFunction(apr_pool_t *pool, JSContextRef context, size_t setups, void *setup[], size_t count, const JSValueRef arguments[], bool initialize, JSValueRef *exception, sig::Signature *signature, ffi_cif *cif, void (*function)()) { CYTry {
1032     if (setups + count != signature->count - 1)
1033         throw CYJSError(context, "incorrect number of arguments to ffi function");
1034
1035     size_t size(setups + count);
1036     void *values[size];
1037     memcpy(values, setup, sizeof(void *) * setups);
1038
1039     for (size_t index(setups); index != size; ++index) {
1040         sig::Element *element(&signature->elements[index + 1]);
1041         ffi_type *ffi(cif->arg_types[index]);
1042         // XXX: alignment?
1043         values[index] = new(pool) uint8_t[ffi->size];
1044         CYPoolFFI(pool, context, element->type, ffi, values[index], arguments[index - setups]);
1045     }
1046
1047     uint8_t value[cif->rtype->size];
1048
1049     if (hooks_ != NULL && hooks_->CallFunction != NULL)
1050         (*hooks_->CallFunction)(context, cif, function, value, values);
1051     else
1052         ffi_call(cif, function, value, values);
1053
1054     return CYFromFFI(context, signature->elements[0].type, cif->rtype, value, initialize);
1055 } CYCatch }
1056
1057 static JSValueRef Functor_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1058     CYPool pool;
1059     cy::Functor *internal(reinterpret_cast<cy::Functor *>(JSObjectGetPrivate(object)));
1060     return CYCallFunction(pool, context, 0, NULL, count, arguments, false, exception, &internal->signature_, &internal->cif_, internal->GetValue());
1061 }
1062
1063 static JSObjectRef CYMakeType(JSContextRef context, const char *type) {
1064     Type_privateData *internal(new Type_privateData(NULL, type));
1065     return JSObjectMake(context, Type_privateData::Class_, internal);
1066 }
1067
1068 static JSObjectRef CYMakeType(JSContextRef context, sig::Type *type) {
1069     Type_privateData *internal(new Type_privateData(type));
1070     return JSObjectMake(context, Type_privateData::Class_, internal);
1071 }
1072
1073 static void *CYCastSymbol(const char *name) {
1074     return dlsym(RTLD_DEFAULT, name);
1075 }
1076
1077 static JSValueRef Runtime_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1078     CYPool pool;
1079     CYUTF8String name(CYPoolUTF8String(pool, context, property));
1080
1081     if (hooks_ != NULL && hooks_->RuntimeProperty != NULL)
1082         if (JSValueRef value = (*hooks_->RuntimeProperty)(context, name))
1083             return value;
1084
1085     sqlite3_stmt *statement;
1086
1087     _sqlcall(sqlite3_prepare(Bridge_,
1088         "select "
1089             "\"bridge\".\"mode\", "
1090             "\"bridge\".\"value\" "
1091         "from \"bridge\" "
1092         "where"
1093             " \"bridge\".\"name\" = ?"
1094         " limit 1"
1095     , -1, &statement, NULL));
1096
1097     _sqlcall(sqlite3_bind_text(statement, 1, name.data, name.size, SQLITE_STATIC));
1098
1099     int mode;
1100     const char *value;
1101
1102     if (_sqlcall(sqlite3_step(statement)) == SQLITE_DONE) {
1103         mode = -1;
1104         value = NULL;
1105     } else {
1106         mode = sqlite3_column_int(statement, 0);
1107         value = sqlite3_column_pooled(pool, statement, 1);
1108     }
1109
1110     _sqlcall(sqlite3_finalize(statement));
1111
1112     switch (mode) {
1113         default:
1114             _assert(false);
1115         case -1:
1116             return NULL;
1117
1118         case 0:
1119             return JSEvaluateScript(CYGetJSContext(), CYJSString(value), NULL, NULL, 0, NULL);
1120         case 1:
1121             return CYMakeFunctor(context, reinterpret_cast<void (*)()>(CYCastSymbol(name.data)), value);
1122
1123         case 2: {
1124             // XXX: this is horrendously inefficient
1125             sig::Signature signature;
1126             sig::Parse(pool, &signature, value, &Structor_);
1127             ffi_cif cif;
1128             sig::sig_ffi_cif(pool, &sig::ObjectiveC, &signature, &cif);
1129             return CYFromFFI(context, signature.elements[0].type, cif.rtype, CYCastSymbol(name.data));
1130         }
1131
1132         // XXX: implement case 3
1133         case 4:
1134             return CYMakeType(context, value);
1135     }
1136 } CYCatch }
1137
1138 static JSObjectRef Pointer_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1139     if (count != 2)
1140         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1141
1142     CYPool pool;
1143
1144     void *value(CYCastPointer<void *>(context, arguments[0]));
1145     const char *type(CYPoolCString(pool, context, arguments[1]));
1146
1147     sig::Signature signature;
1148     sig::Parse(pool, &signature, type, &Structor_);
1149
1150     return CYMakePointer(context, value, signature.elements[0].type, NULL, NULL);
1151 } CYCatch }
1152
1153 static JSObjectRef Type_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1154     if (count != 1)
1155         throw CYJSError(context, "incorrect number of arguments to Type constructor");
1156     CYPool pool;
1157     const char *type(CYPoolCString(pool, context, arguments[0]));
1158     return CYMakeType(context, type);
1159 } CYCatch }
1160
1161 static JSValueRef Type_getProperty(JSContextRef context, JSObjectRef object, JSStringRef property, JSValueRef *exception) { CYTry {
1162     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1163
1164     sig::Type type;
1165
1166     if (JSStringIsEqualToUTF8CString(property, "$cyi")) {
1167         type.primitive = sig::pointer_P;
1168         type.data.data.size = 0;
1169     } else {
1170         CYPool pool;
1171         size_t index(CYGetIndex(pool, context, property));
1172         if (index == _not(size_t))
1173             return NULL;
1174         type.primitive = sig::array_P;
1175         type.data.data.size = index;
1176     }
1177
1178     type.name = NULL;
1179     type.flags = 0;
1180
1181     type.data.data.type = internal->type_;
1182
1183     return CYMakeType(context, &type);
1184 } CYCatch }
1185
1186 static JSValueRef Type_callAsFunction(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1187     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1188
1189     if (count != 1)
1190         throw CYJSError(context, "incorrect number of arguments to type cast function");
1191     sig::Type *type(internal->type_);
1192     ffi_type *ffi(internal->GetFFI());
1193     // XXX: alignment?
1194     uint8_t value[ffi->size];
1195     CYPool pool;
1196     CYPoolFFI(pool, context, type, ffi, value, arguments[0]);
1197     return CYFromFFI(context, type, ffi, value);
1198 } CYCatch }
1199
1200 static JSObjectRef Type_callAsConstructor(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1201     if (count != 0)
1202         throw CYJSError(context, "incorrect number of arguments to type cast function");
1203     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(object)));
1204
1205     sig::Type *type(internal->type_);
1206     size_t size;
1207
1208     if (type->primitive != sig::array_P)
1209         size = 0;
1210     else {
1211         size = type->data.data.size;
1212         type = type->data.data.type;
1213     }
1214
1215     void *value(malloc(internal->GetFFI()->size));
1216     return CYMakePointer(context, value, type, NULL, NULL);
1217 } CYCatch }
1218
1219 static JSObjectRef Functor_new(JSContextRef context, JSObjectRef object, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1220     if (count != 2)
1221         throw CYJSError(context, "incorrect number of arguments to Functor constructor");
1222     CYPool pool;
1223     const char *type(CYPoolCString(pool, context, arguments[1]));
1224     return CYMakeFunctor(context, arguments[0], type);
1225 } CYCatch }
1226
1227 static JSValueRef CYValue_callAsFunction_valueOf(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1228     CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1229     return CYCastJSValue(context, reinterpret_cast<uintptr_t>(internal->value_));
1230 } CYCatch }
1231
1232 static JSValueRef CYValue_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1233     return CYValue_callAsFunction_valueOf(context, object, _this, count, arguments, exception);
1234 }
1235
1236 static JSValueRef CYValue_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1237 CYValue *internal(reinterpret_cast<CYValue *>(JSObjectGetPrivate(_this)));
1238     char string[32];
1239     sprintf(string, "%p", internal->value_);
1240
1241     return CYCastJSValue(context, string);
1242 } CYCatch }
1243
1244 static JSValueRef Type_callAsFunction_toString(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1245     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1246     CYPool pool;
1247     const char *type(sig::Unparse(pool, internal->type_));
1248     return CYCastJSValue(context, CYJSString(type));
1249 } CYCatch }
1250
1251 static JSValueRef Type_callAsFunction_toCYON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) { CYTry {
1252     Type_privateData *internal(reinterpret_cast<Type_privateData *>(JSObjectGetPrivate(_this)));
1253     CYPool pool;
1254     const char *type(sig::Unparse(pool, internal->type_));
1255     size_t size(strlen(type));
1256     char *cyon(new(pool) char[12 + size + 1]);
1257     memcpy(cyon, "new Type(\"", 10);
1258     cyon[12 + size] = '\0';
1259     cyon[12 + size - 2] = '"';
1260     cyon[12 + size - 1] = ')';
1261     memcpy(cyon + 10, type, size);
1262     return CYCastJSValue(context, CYJSString(cyon));
1263 } CYCatch }
1264
1265 static JSValueRef Type_callAsFunction_toJSON(JSContextRef context, JSObjectRef object, JSObjectRef _this, size_t count, const JSValueRef arguments[], JSValueRef *exception) {
1266     return Type_callAsFunction_toString(context, object, _this, count, arguments, exception);
1267 }
1268
1269 static JSStaticValue Pointer_staticValues[2] = {
1270     {"$cyi", &Pointer_getProperty_$cyi, &Pointer_setProperty_$cyi, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1271     {NULL, NULL, NULL, 0}
1272 };
1273
1274 static JSStaticFunction Pointer_staticFunctions[4] = {
1275     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1276     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1277     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1278     {NULL, NULL, 0}
1279 };
1280
1281 static JSStaticFunction Struct_staticFunctions[2] = {
1282     {"$cya", &Struct_callAsFunction_$cya, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1283     {NULL, NULL, 0}
1284 };
1285
1286 static JSStaticFunction Functor_staticFunctions[4] = {
1287     {"toCYON", &CYValue_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1288     {"toJSON", &CYValue_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1289     {"valueOf", &CYValue_callAsFunction_valueOf, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1290     {NULL, NULL, 0}
1291 };
1292
1293 namespace cy {
1294     JSStaticFunction const * const Functor::StaticFunctions = Functor_staticFunctions;
1295 }
1296
1297 static JSStaticFunction Type_staticFunctions[4] = {
1298     {"toCYON", &Type_callAsFunction_toCYON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1299     {"toJSON", &Type_callAsFunction_toJSON, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1300     {"toString", &Type_callAsFunction_toString, kJSPropertyAttributeDontEnum | kJSPropertyAttributeDontDelete},
1301     {NULL, NULL, 0}
1302 };
1303
1304 void CYSetArgs(int argc, const char *argv[]) {
1305     JSContextRef context(CYGetJSContext());
1306     JSValueRef args[argc];
1307     for (int i(0); i != argc; ++i)
1308         args[i] = CYCastJSValue(context, argv[i]);
1309 #ifdef __APPLE__
1310     JSValueRef exception(NULL);
1311     JSObjectRef array(JSObjectMakeArray(context, argc, args, &exception));
1312     CYThrow(context, exception);
1313 #else
1314     JSValueRef value(CYCallAsFunction(context, Array_, NULL, argc, args));
1315     JSObjectRef array(CYCastJSObject(context, value));
1316 #endif
1317     CYSetProperty(context, System_, CYJSString("args"), array);
1318 }
1319
1320 JSObjectRef CYGetGlobalObject(JSContextRef context) {
1321     return JSContextGetGlobalObject(context);
1322 }
1323
1324 const char *CYExecute(apr_pool_t *pool, const char *code) {
1325     JSContextRef context(CYGetJSContext());
1326     JSValueRef exception(NULL), result;
1327
1328     void *handle;
1329     if (hooks_ != NULL && hooks_->ExecuteStart != NULL)
1330         handle = (*hooks_->ExecuteStart)(context);
1331     else
1332         handle = NULL;
1333
1334     const char *json;
1335
1336     try {
1337         result = JSEvaluateScript(context, CYJSString(code), NULL, NULL, 0, &exception);
1338     } catch (const char *error) {
1339         return error;
1340     }
1341
1342     if (exception != NULL) { error:
1343         result = exception;
1344         exception = NULL;
1345     }
1346
1347     if (JSValueIsUndefined(context, result))
1348         return NULL;
1349
1350     try {
1351         json = CYPoolCCYON(pool, context, result, &exception);
1352     } catch (const char *error) {
1353         return error;
1354     }
1355
1356     if (exception != NULL)
1357         goto error;
1358
1359     CYSetProperty(context, CYGetGlobalObject(context), Result_, result);
1360
1361     if (hooks_ != NULL && hooks_->ExecuteEnd != NULL)
1362         (*hooks_->ExecuteEnd)(context, handle);
1363     return json;
1364 }
1365
1366 static apr_pool_t *Pool_;
1367
1368 static bool initialized_;
1369
1370 void CYInitialize() {
1371     if (!initialized_)
1372         initialized_ = true;
1373     else return;
1374
1375     _aprcall(apr_initialize());
1376     _aprcall(apr_pool_create(&Pool_, NULL));
1377     _sqlcall(sqlite3_open("/usr/lib/libcycript.db", &Bridge_));
1378 }
1379
1380 apr_pool_t *CYGetGlobalPool() {
1381     CYInitialize();
1382     return Pool_;
1383 }
1384
1385 void CYThrow(JSContextRef context, JSValueRef value) {
1386     if (value != NULL)
1387         throw CYJSError(context, value);
1388 }
1389
1390 const char *CYJSError::PoolCString(apr_pool_t *pool) const {
1391     return CYPoolCString(pool, context_, value_);
1392 }
1393
1394 JSValueRef CYJSError::CastJSValue(JSContextRef context) const {
1395     // XXX: what if the context is different?
1396     return value_;
1397 }
1398
1399 void CYThrow(const char *format, ...) {
1400     va_list args;
1401     va_start (args, format);
1402     throw CYPoolError(format, args);
1403     // XXX: does this matter? :(
1404     va_end (args);
1405 }
1406
1407 const char *CYPoolError::PoolCString(apr_pool_t *pool) const {
1408     return apr_pstrdup(pool, message_);
1409 }
1410
1411 CYPoolError::CYPoolError(const char *format, ...) {
1412     va_list args;
1413     va_start (args, format);
1414     message_ = apr_pvsprintf(pool_, format, args);
1415     va_end (args);
1416 }
1417
1418 CYPoolError::CYPoolError(const char *format, va_list args) {
1419     message_ = apr_pvsprintf(pool_, format, args);
1420 }
1421
1422 JSValueRef CYPoolError::CastJSValue(JSContextRef context) const {
1423     return CYCastJSValue(context, message_);
1424 }
1425
1426 CYJSError::CYJSError(JSContextRef context, const char *format, ...) {
1427     if (context == NULL)
1428         context = CYGetJSContext();
1429
1430     CYPool pool;
1431
1432     va_list args;
1433     va_start (args, format);
1434     const char *message(apr_pvsprintf(pool, format, args));
1435     va_end (args);
1436
1437     JSValueRef arguments[1] = {CYCastJSValue(context, CYJSString(message))};
1438
1439     JSValueRef exception(NULL);
1440     value_ = JSObjectCallAsConstructor(context, Error_, 1, arguments, &exception);
1441     CYThrow(context, exception);
1442 }
1443
1444 void CYObjectiveC(JSContextRef context, JSObjectRef global);
1445
1446 JSGlobalContextRef CYGetJSContext() {
1447     CYInitialize();
1448
1449     if (Context_ == NULL) {
1450         JSClassDefinition definition;
1451
1452         definition = kJSClassDefinitionEmpty;
1453         definition.className = "Functor";
1454         definition.staticFunctions = cy::Functor::StaticFunctions;
1455         definition.callAsFunction = &Functor_callAsFunction;
1456         definition.finalize = &CYFinalize;
1457         Functor_ = JSClassCreate(&definition);
1458
1459         definition = kJSClassDefinitionEmpty;
1460         definition.className = "Pointer";
1461         definition.staticValues = Pointer_staticValues;
1462         definition.staticFunctions = Pointer_staticFunctions;
1463         definition.getProperty = &Pointer_getProperty;
1464         definition.setProperty = &Pointer_setProperty;
1465         definition.finalize = &CYFinalize;
1466         Pointer_ = JSClassCreate(&definition);
1467
1468         definition = kJSClassDefinitionEmpty;
1469         definition.className = "Struct";
1470         definition.staticFunctions = Struct_staticFunctions;
1471         definition.getProperty = &Struct_getProperty;
1472         definition.setProperty = &Struct_setProperty;
1473         definition.getPropertyNames = &Struct_getPropertyNames;
1474         definition.finalize = &CYFinalize;
1475         Struct_ = JSClassCreate(&definition);
1476
1477         definition = kJSClassDefinitionEmpty;
1478         definition.className = "Type";
1479         definition.staticFunctions = Type_staticFunctions;
1480         definition.getProperty = &Type_getProperty;
1481         definition.callAsFunction = &Type_callAsFunction;
1482         definition.callAsConstructor = &Type_callAsConstructor;
1483         definition.finalize = &CYFinalize;
1484         Type_privateData::Class_ = JSClassCreate(&definition);
1485
1486         definition = kJSClassDefinitionEmpty;
1487         definition.className = "Runtime";
1488         definition.getProperty = &Runtime_getProperty;
1489         Runtime_ = JSClassCreate(&definition);
1490
1491         definition = kJSClassDefinitionEmpty;
1492         //definition.getProperty = &Global_getProperty;
1493         JSClassRef Global(JSClassCreate(&definition));
1494
1495         JSGlobalContextRef context(JSGlobalContextCreate(Global));
1496         Context_ = context;
1497         JSObjectRef global(CYGetGlobalObject(context));
1498
1499         JSObjectSetPrototype(context, global, JSObjectMake(context, Runtime_, NULL));
1500
1501         Array_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Array")));
1502         JSValueProtect(context, Array_);
1503
1504         Error_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Error")));
1505         JSValueProtect(context, Error_);
1506
1507         Function_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Function")));
1508         JSValueProtect(context, Function_);
1509
1510         String_ = CYCastJSObject(context, CYGetProperty(context, global, CYJSString("String")));
1511         JSValueProtect(context, String_);
1512
1513         length_ = JSStringCreateWithUTF8CString("length");
1514         message_ = JSStringCreateWithUTF8CString("message");
1515         name_ = JSStringCreateWithUTF8CString("name");
1516         prototype_ = JSStringCreateWithUTF8CString("prototype");
1517         toCYON_ = JSStringCreateWithUTF8CString("toCYON");
1518         toJSON_ = JSStringCreateWithUTF8CString("toJSON");
1519
1520         JSObjectRef Object(CYCastJSObject(context, CYGetProperty(context, global, CYJSString("Object"))));
1521         Object_prototype_ = CYCastJSObject(context, CYGetProperty(context, Object, prototype_));
1522         JSValueProtect(context, Object_prototype_);
1523
1524         Array_prototype_ = CYCastJSObject(context, CYGetProperty(context, Array_, prototype_));
1525         Array_pop_ = CYCastJSObject(context, CYGetProperty(context, Array_prototype_, CYJSString("pop")));
1526         Array_push_ = CYCastJSObject(context, CYGetProperty(context, Array_prototype_, CYJSString("push")));
1527         Array_splice_ = CYCastJSObject(context, CYGetProperty(context, Array_prototype_, CYJSString("splice")));
1528
1529         CYSetProperty(context, Array_prototype_, toCYON_, JSObjectMakeFunctionWithCallback(context, toCYON_, &Array_callAsFunction_toCYON), kJSPropertyAttributeDontEnum);
1530
1531         JSValueProtect(context, Array_prototype_);
1532         JSValueProtect(context, Array_pop_);
1533         JSValueProtect(context, Array_push_);
1534         JSValueProtect(context, Array_splice_);
1535
1536         JSObjectRef Functor(JSObjectMakeConstructor(context, Functor_, &Functor_new));
1537
1538         Function_prototype_ = (JSObjectRef) CYGetProperty(context, Function_, prototype_);
1539         JSValueProtect(context, Function_prototype_);
1540
1541         JSObjectSetPrototype(context, (JSObjectRef) CYGetProperty(context, Functor, prototype_), Function_prototype_);
1542
1543         CYSetProperty(context, global, CYJSString("Functor"), Functor);
1544         CYSetProperty(context, global, CYJSString("Pointer"), JSObjectMakeConstructor(context, Pointer_, &Pointer_new));
1545         CYSetProperty(context, global, CYJSString("Type"), JSObjectMakeConstructor(context, Type_privateData::Class_, &Type_new));
1546
1547         JSObjectRef cycript(JSObjectMake(context, NULL, NULL));
1548         CYSetProperty(context, global, CYJSString("Cycript"), cycript);
1549         CYSetProperty(context, cycript, CYJSString("gc"), JSObjectMakeFunctionWithCallback(context, CYJSString("gc"), &Cycript_gc_callAsFunction));
1550
1551         CYSetProperty(context, global, CYJSString("$cyq"), JSObjectMakeFunctionWithCallback(context, CYJSString("$cyq"), &$cyq));
1552
1553         System_ = JSObjectMake(context, NULL, NULL);
1554         JSValueProtect(context, System_);
1555
1556         CYSetProperty(context, global, CYJSString("system"), System_);
1557         CYSetProperty(context, System_, CYJSString("args"), CYJSNull(context));
1558         //CYSetProperty(context, System_, CYJSString("global"), global);
1559
1560         CYSetProperty(context, System_, CYJSString("print"), JSObjectMakeFunctionWithCallback(context, CYJSString("print"), &System_print));
1561
1562         Result_ = JSStringCreateWithUTF8CString("_");
1563
1564 // XXX: this is very wrong and sad
1565 #ifdef __APPLE__
1566         CYObjectiveC(context, global);
1567 #endif
1568     }
1569
1570     return Context_;
1571 }