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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/runtime/runtime-utils.h" | 5 #include "src/runtime/runtime-utils.h" |
6 | 6 |
7 #include "src/arguments.h" | 7 #include "src/arguments.h" |
8 #include "src/bootstrapper.h" | 8 #include "src/bootstrapper.h" |
9 #include "src/debug/debug.h" | 9 #include "src/debug/debug.h" |
10 #include "src/messages.h" | 10 #include "src/messages.h" |
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416 HandleScope scope(isolate); | 416 HandleScope scope(isolate); |
417 DCHECK_EQ(1, args.length()); | 417 DCHECK_EQ(1, args.length()); |
418 CONVERT_SMI_ARG_CHECKED(slot, 0); | 418 CONVERT_SMI_ARG_CHECKED(slot, 0); |
419 | 419 |
420 // Go up context chain to the script context. | 420 // Go up context chain to the script context. |
421 Handle<Context> script_context(isolate->context()->script_context(), isolate); | 421 Handle<Context> script_context(isolate->context()->script_context(), isolate); |
422 DCHECK(script_context->IsScriptContext()); | 422 DCHECK(script_context->IsScriptContext()); |
423 DCHECK(script_context->get(slot)->IsPropertyCell()); | 423 DCHECK(script_context->get(slot)->IsPropertyCell()); |
424 | 424 |
425 // Lookup the named property on the global object. | 425 // Lookup the named property on the global object. |
426 Handle<ScopeInfo> scope_info(ScopeInfo::cast(script_context->extension()), | 426 Handle<ScopeInfo> scope_info(script_context->scope_info(), isolate); |
427 isolate); | |
428 Handle<Name> name(scope_info->ContextSlotName(slot), isolate); | 427 Handle<Name> name(scope_info->ContextSlotName(slot), isolate); |
429 Handle<GlobalObject> global_object(script_context->global_object(), isolate); | 428 Handle<GlobalObject> global_object(script_context->global_object(), isolate); |
430 LookupIterator it(global_object, name, LookupIterator::HIDDEN); | 429 LookupIterator it(global_object, name, LookupIterator::HIDDEN); |
431 | 430 |
432 // Switch to fast mode only if there is a data property and it's not on | 431 // Switch to fast mode only if there is a data property and it's not on |
433 // a hidden prototype. | 432 // a hidden prototype. |
434 if (it.state() == LookupIterator::DATA && | 433 if (it.state() == LookupIterator::DATA && |
435 it.GetHolder<Object>().is_identical_to(global_object)) { | 434 it.GetHolder<Object>().is_identical_to(global_object)) { |
436 // Now update the cell in the script context. | 435 // Now update the cell in the script context. |
437 Handle<PropertyCell> cell = it.GetPropertyCell(); | 436 Handle<PropertyCell> cell = it.GetPropertyCell(); |
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451 namespace { | 450 namespace { |
452 | 451 |
453 Object* StoreGlobalViaContext(Isolate* isolate, int slot, Handle<Object> value, | 452 Object* StoreGlobalViaContext(Isolate* isolate, int slot, Handle<Object> value, |
454 LanguageMode language_mode) { | 453 LanguageMode language_mode) { |
455 // Go up context chain to the script context. | 454 // Go up context chain to the script context. |
456 Handle<Context> script_context(isolate->context()->script_context(), isolate); | 455 Handle<Context> script_context(isolate->context()->script_context(), isolate); |
457 DCHECK(script_context->IsScriptContext()); | 456 DCHECK(script_context->IsScriptContext()); |
458 DCHECK(script_context->get(slot)->IsPropertyCell()); | 457 DCHECK(script_context->get(slot)->IsPropertyCell()); |
459 | 458 |
460 // Lookup the named property on the global object. | 459 // Lookup the named property on the global object. |
461 Handle<ScopeInfo> scope_info(ScopeInfo::cast(script_context->extension()), | 460 Handle<ScopeInfo> scope_info(script_context->scope_info(), isolate); |
462 isolate); | |
463 Handle<Name> name(scope_info->ContextSlotName(slot), isolate); | 461 Handle<Name> name(scope_info->ContextSlotName(slot), isolate); |
464 Handle<GlobalObject> global_object(script_context->global_object(), isolate); | 462 Handle<GlobalObject> global_object(script_context->global_object(), isolate); |
465 LookupIterator it(global_object, name, LookupIterator::HIDDEN); | 463 LookupIterator it(global_object, name, LookupIterator::HIDDEN); |
466 | 464 |
467 // Switch to fast mode only if there is a data property and it's not on | 465 // Switch to fast mode only if there is a data property and it's not on |
468 // a hidden prototype. | 466 // a hidden prototype. |
469 if (it.state() == LookupIterator::DATA && | 467 if (it.state() == LookupIterator::DATA && |
470 it.GetHolder<Object>().is_identical_to(global_object)) { | 468 it.GetHolder<Object>().is_identical_to(global_object)) { |
471 // Now update cell in the script context. | 469 // Now update cell in the script context. |
472 Handle<PropertyCell> cell = it.GetPropertyCell(); | 470 Handle<PropertyCell> cell = it.GetPropertyCell(); |
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1465 SealHandleScope scope(isolate); | 1463 SealHandleScope scope(isolate); |
1466 DCHECK_EQ(2, args.length()); | 1464 DCHECK_EQ(2, args.length()); |
1467 CONVERT_ARG_CHECKED(Object, x, 0); | 1465 CONVERT_ARG_CHECKED(Object, x, 0); |
1468 CONVERT_ARG_CHECKED(Object, y, 1); | 1466 CONVERT_ARG_CHECKED(Object, y, 1); |
1469 // TODO(bmeurer): Change this at some point to return true/false instead. | 1467 // TODO(bmeurer): Change this at some point to return true/false instead. |
1470 return Smi::FromInt(x->StrictEquals(y) ? EQUAL : NOT_EQUAL); | 1468 return Smi::FromInt(x->StrictEquals(y) ? EQUAL : NOT_EQUAL); |
1471 } | 1469 } |
1472 | 1470 |
1473 } // namespace internal | 1471 } // namespace internal |
1474 } // namespace v8 | 1472 } // namespace v8 |
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