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1 // Copyright 2014 the V8 project authors. All rights reserved. | 1 // Copyright 2014 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "src/v8.h" | 5 #include "src/v8.h" |
6 | 6 |
7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
8 #include "src/messages.h" | 8 #include "src/messages.h" |
9 #include "src/runtime/runtime-utils.h" | 9 #include "src/runtime/runtime-utils.h" |
10 | 10 |
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1295 if (!current->HasDictionaryElements()) continue; | 1295 if (!current->HasDictionaryElements()) continue; |
1296 if (current->element_dictionary() | 1296 if (current->element_dictionary() |
1297 ->HasComplexElements<DictionaryEntryType::kObjects>()) { | 1297 ->HasComplexElements<DictionaryEntryType::kObjects>()) { |
1298 return isolate->heap()->true_value(); | 1298 return isolate->heap()->true_value(); |
1299 } | 1299 } |
1300 } | 1300 } |
1301 return isolate->heap()->false_value(); | 1301 return isolate->heap()->false_value(); |
1302 } | 1302 } |
1303 | 1303 |
1304 | 1304 |
1305 // TODO(dcarney): remove this function when TurboFan supports it. | |
1306 // Takes the object to be iterated over and the result of GetPropertyNamesFast | |
1307 // Returns pair (cache_array, cache_type). | |
1308 RUNTIME_FUNCTION_RETURN_PAIR(Runtime_ForInInit) { | |
1309 SealHandleScope scope(isolate); | |
1310 DCHECK(args.length() == 2); | |
1311 // This simulates CONVERT_ARG_HANDLE_CHECKED for calls returning pairs. | |
1312 // Not worth creating a macro atm as this function should be removed. | |
1313 if (!args[0]->IsJSReceiver() || !args[1]->IsObject()) { | |
1314 Object* error = isolate->ThrowIllegalOperation(); | |
1315 return MakePair(error, isolate->heap()->undefined_value()); | |
1316 } | |
1317 Handle<JSReceiver> object = args.at<JSReceiver>(0); | |
1318 Handle<Object> cache_type = args.at<Object>(1); | |
1319 if (cache_type->IsMap()) { | |
1320 // Enum cache case. | |
1321 return MakePair(Map::cast(*cache_type)->EnumLength() != 0 | |
1322 ? object->map()->instance_descriptors()->GetEnumCache() | |
1323 : isolate->heap()->empty_fixed_array(), | |
1324 *cache_type); | |
1325 } else { | |
1326 // FixedArray case. | |
1327 Smi* new_cache_type = Smi::FromInt(object->IsJSProxy() ? 0 : 1); | |
1328 return MakePair(*Handle<FixedArray>::cast(cache_type), new_cache_type); | |
1329 } | |
1330 } | |
1331 | |
1332 | |
1333 // TODO(dcarney): remove this function when TurboFan supports it. | |
1334 RUNTIME_FUNCTION(Runtime_ForInCacheArrayLength) { | |
1335 SealHandleScope shs(isolate); | |
1336 DCHECK(args.length() == 2); | |
1337 CONVERT_ARG_HANDLE_CHECKED(Object, cache_type, 0); | |
1338 CONVERT_ARG_HANDLE_CHECKED(FixedArray, array, 1); | |
1339 int length = 0; | |
1340 if (cache_type->IsMap()) { | |
1341 length = Map::cast(*cache_type)->EnumLength(); | |
1342 } else { | |
1343 DCHECK(cache_type->IsSmi()); | |
1344 length = array->length(); | |
1345 } | |
1346 return Smi::FromInt(length); | |
1347 } | |
1348 | |
1349 | |
1350 // TODO(dcarney): remove this function when TurboFan supports it. | |
1351 // Takes (the object to be iterated over, | |
1352 // cache_array from ForInInit, | |
1353 // cache_type from ForInInit, | |
1354 // the current index) | |
1355 // Returns pair (array[index], needs_filtering). | |
1356 RUNTIME_FUNCTION_RETURN_PAIR(Runtime_ForInNext) { | |
1357 SealHandleScope scope(isolate); | |
1358 DCHECK(args.length() == 4); | |
1359 int32_t index; | |
1360 // This simulates CONVERT_ARG_HANDLE_CHECKED for calls returning pairs. | |
1361 // Not worth creating a macro atm as this function should be removed. | |
1362 if (!args[0]->IsJSReceiver() || !args[1]->IsFixedArray() || | |
1363 !args[2]->IsObject() || !args[3]->ToInt32(&index)) { | |
1364 Object* error = isolate->ThrowIllegalOperation(); | |
1365 return MakePair(error, isolate->heap()->undefined_value()); | |
1366 } | |
1367 Handle<JSReceiver> object = args.at<JSReceiver>(0); | |
1368 Handle<FixedArray> array = args.at<FixedArray>(1); | |
1369 Handle<Object> cache_type = args.at<Object>(2); | |
1370 // Figure out first if a slow check is needed for this object. | |
1371 bool slow_check_needed = false; | |
1372 if (cache_type->IsMap()) { | |
1373 if (object->map() != Map::cast(*cache_type)) { | |
1374 // Object transitioned. Need slow check. | |
1375 slow_check_needed = true; | |
1376 } | |
1377 } else { | |
1378 // No slow check needed for proxies. | |
1379 slow_check_needed = Smi::cast(*cache_type)->value() == 1; | |
1380 } | |
1381 return MakePair(array->get(index), | |
1382 isolate->heap()->ToBoolean(slow_check_needed)); | |
1383 } | |
1384 | |
1385 | |
1386 RUNTIME_FUNCTION(Runtime_IsArray) { | 1305 RUNTIME_FUNCTION(Runtime_IsArray) { |
1387 SealHandleScope shs(isolate); | 1306 SealHandleScope shs(isolate); |
1388 DCHECK(args.length() == 1); | 1307 DCHECK(args.length() == 1); |
1389 CONVERT_ARG_CHECKED(Object, obj, 0); | 1308 CONVERT_ARG_CHECKED(Object, obj, 0); |
1390 return isolate->heap()->ToBoolean(obj->IsJSArray()); | 1309 return isolate->heap()->ToBoolean(obj->IsJSArray()); |
1391 } | 1310 } |
1392 | 1311 |
1393 | 1312 |
1394 RUNTIME_FUNCTION(Runtime_HasCachedArrayIndex) { | 1313 RUNTIME_FUNCTION(Runtime_HasCachedArrayIndex) { |
1395 SealHandleScope shs(isolate); | 1314 SealHandleScope shs(isolate); |
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1408 | 1327 |
1409 RUNTIME_FUNCTION(Runtime_FastOneByteArrayJoin) { | 1328 RUNTIME_FUNCTION(Runtime_FastOneByteArrayJoin) { |
1410 SealHandleScope shs(isolate); | 1329 SealHandleScope shs(isolate); |
1411 DCHECK(args.length() == 2); | 1330 DCHECK(args.length() == 2); |
1412 // Returning undefined means that this fast path fails and one has to resort | 1331 // Returning undefined means that this fast path fails and one has to resort |
1413 // to a slow path. | 1332 // to a slow path. |
1414 return isolate->heap()->undefined_value(); | 1333 return isolate->heap()->undefined_value(); |
1415 } | 1334 } |
1416 } // namespace internal | 1335 } // namespace internal |
1417 } // namespace v8 | 1336 } // namespace v8 |
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