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Issue 567313003: RegExp: Add support for the ES6-proposed sticky flag (Closed) Base URL: https://v8.googlecode.com/svn/branches/bleeding_edge
Patch Set: Add missing test of --harmony-regexps flag Created 6 years, 3 months ago
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1 // Copyright 2012 the V8 project authors. All rights reserved. 1 // Copyright 2012 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 <stdlib.h> 5 #include <stdlib.h>
6 #include <limits> 6 #include <limits>
7 7
8 #include "src/v8.h" 8 #include "src/v8.h"
9 9
10 #include "src/accessors.h" 10 #include "src/accessors.h"
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2541 array->set_length(Smi::FromInt(size)); 2541 array->set_length(Smi::FromInt(size));
2542 // Write in-object properties after the length of the array. 2542 // Write in-object properties after the length of the array.
2543 array->InObjectPropertyAtPut(JSRegExpResult::kIndexIndex, *index); 2543 array->InObjectPropertyAtPut(JSRegExpResult::kIndexIndex, *index);
2544 array->InObjectPropertyAtPut(JSRegExpResult::kInputIndex, *input); 2544 array->InObjectPropertyAtPut(JSRegExpResult::kInputIndex, *input);
2545 return *array; 2545 return *array;
2546 } 2546 }
2547 2547
2548 2548
2549 RUNTIME_FUNCTION(Runtime_RegExpInitializeObject) { 2549 RUNTIME_FUNCTION(Runtime_RegExpInitializeObject) {
2550 HandleScope scope(isolate); 2550 HandleScope scope(isolate);
2551 DCHECK(args.length() == 5); 2551 DCHECK(args.length() == 6);
2552 CONVERT_ARG_HANDLE_CHECKED(JSRegExp, regexp, 0); 2552 CONVERT_ARG_HANDLE_CHECKED(JSRegExp, regexp, 0);
2553 CONVERT_ARG_HANDLE_CHECKED(String, source, 1); 2553 CONVERT_ARG_HANDLE_CHECKED(String, source, 1);
2554 // If source is the empty string we set it to "(?:)" instead as 2554 // If source is the empty string we set it to "(?:)" instead as
2555 // suggested by ECMA-262, 5th, section 15.10.4.1. 2555 // suggested by ECMA-262, 5th, section 15.10.4.1.
2556 if (source->length() == 0) source = isolate->factory()->query_colon_string(); 2556 if (source->length() == 0) source = isolate->factory()->query_colon_string();
2557 2557
2558 CONVERT_ARG_HANDLE_CHECKED(Object, global, 2); 2558 CONVERT_ARG_HANDLE_CHECKED(Object, global, 2);
2559 if (!global->IsTrue()) global = isolate->factory()->false_value(); 2559 if (!global->IsTrue()) global = isolate->factory()->false_value();
2560 2560
2561 CONVERT_ARG_HANDLE_CHECKED(Object, ignoreCase, 3); 2561 CONVERT_ARG_HANDLE_CHECKED(Object, ignoreCase, 3);
2562 if (!ignoreCase->IsTrue()) ignoreCase = isolate->factory()->false_value(); 2562 if (!ignoreCase->IsTrue()) ignoreCase = isolate->factory()->false_value();
2563 2563
2564 CONVERT_ARG_HANDLE_CHECKED(Object, multiline, 4); 2564 CONVERT_ARG_HANDLE_CHECKED(Object, multiline, 4);
2565 if (!multiline->IsTrue()) multiline = isolate->factory()->false_value(); 2565 if (!multiline->IsTrue()) multiline = isolate->factory()->false_value();
2566 2566
2567 CONVERT_ARG_HANDLE_CHECKED(Object, sticky, 5);
2568 if (!sticky->IsTrue()) sticky = isolate->factory()->false_value();
2569
2567 Map* map = regexp->map(); 2570 Map* map = regexp->map();
2568 Object* constructor = map->constructor(); 2571 Object* constructor = map->constructor();
2569 if (constructor->IsJSFunction() && 2572 if (!FLAG_harmony_regexps &&
2573 constructor->IsJSFunction() &&
2570 JSFunction::cast(constructor)->initial_map() == map) { 2574 JSFunction::cast(constructor)->initial_map() == map) {
2571 // If we still have the original map, set in-object properties directly. 2575 // If we still have the original map, set in-object properties directly.
2572 regexp->InObjectPropertyAtPut(JSRegExp::kSourceFieldIndex, *source); 2576 regexp->InObjectPropertyAtPut(JSRegExp::kSourceFieldIndex, *source);
2573 // Both true and false are immovable immortal objects so no need for write 2577 // Both true and false are immovable immortal objects so no need for write
2574 // barrier. 2578 // barrier.
2575 regexp->InObjectPropertyAtPut( 2579 regexp->InObjectPropertyAtPut(
2576 JSRegExp::kGlobalFieldIndex, *global, SKIP_WRITE_BARRIER); 2580 JSRegExp::kGlobalFieldIndex, *global, SKIP_WRITE_BARRIER);
2577 regexp->InObjectPropertyAtPut( 2581 regexp->InObjectPropertyAtPut(
2578 JSRegExp::kIgnoreCaseFieldIndex, *ignoreCase, SKIP_WRITE_BARRIER); 2582 JSRegExp::kIgnoreCaseFieldIndex, *ignoreCase, SKIP_WRITE_BARRIER);
2579 regexp->InObjectPropertyAtPut( 2583 regexp->InObjectPropertyAtPut(
2580 JSRegExp::kMultilineFieldIndex, *multiline, SKIP_WRITE_BARRIER); 2584 JSRegExp::kMultilineFieldIndex, *multiline, SKIP_WRITE_BARRIER);
2581 regexp->InObjectPropertyAtPut( 2585 regexp->InObjectPropertyAtPut(
2582 JSRegExp::kLastIndexFieldIndex, Smi::FromInt(0), SKIP_WRITE_BARRIER); 2586 JSRegExp::kLastIndexFieldIndex, Smi::FromInt(0), SKIP_WRITE_BARRIER);
2583 return *regexp; 2587 return *regexp;
2584 } 2588 }
2585 2589
2586 // Map has changed, so use generic, but slower, method. 2590 // Map has changed, so use generic, but slower, method. We also end here if
2591 // the --harmony-regexp flag is set, because the initial map does not have
2592 // space for the 'sticky' flag, since it is from the snapshot, but must work
2593 // both with and without --harmony-regexp. When sticky comes out from under
2594 // the flag, we will be able to use the fast initial map.
2587 PropertyAttributes final = 2595 PropertyAttributes final =
2588 static_cast<PropertyAttributes>(READ_ONLY | DONT_ENUM | DONT_DELETE); 2596 static_cast<PropertyAttributes>(READ_ONLY | DONT_ENUM | DONT_DELETE);
2589 PropertyAttributes writable = 2597 PropertyAttributes writable =
2590 static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE); 2598 static_cast<PropertyAttributes>(DONT_ENUM | DONT_DELETE);
2591 Handle<Object> zero(Smi::FromInt(0), isolate); 2599 Handle<Object> zero(Smi::FromInt(0), isolate);
2592 Factory* factory = isolate->factory(); 2600 Factory* factory = isolate->factory();
2593 JSObject::SetOwnPropertyIgnoreAttributes( 2601 JSObject::SetOwnPropertyIgnoreAttributes(
2594 regexp, factory->source_string(), source, final).Check(); 2602 regexp, factory->source_string(), source, final).Check();
2595 JSObject::SetOwnPropertyIgnoreAttributes( 2603 JSObject::SetOwnPropertyIgnoreAttributes(
2596 regexp, factory->global_string(), global, final).Check(); 2604 regexp, factory->global_string(), global, final).Check();
2597 JSObject::SetOwnPropertyIgnoreAttributes( 2605 JSObject::SetOwnPropertyIgnoreAttributes(
2598 regexp, factory->ignore_case_string(), ignoreCase, final).Check(); 2606 regexp, factory->ignore_case_string(), ignoreCase, final).Check();
2599 JSObject::SetOwnPropertyIgnoreAttributes( 2607 JSObject::SetOwnPropertyIgnoreAttributes(
2600 regexp, factory->multiline_string(), multiline, final).Check(); 2608 regexp, factory->multiline_string(), multiline, final).Check();
2609 if (FLAG_harmony_regexps) {
2610 JSObject::SetOwnPropertyIgnoreAttributes(
2611 regexp, factory->sticky_string(), sticky, final).Check();
2612 }
2601 JSObject::SetOwnPropertyIgnoreAttributes( 2613 JSObject::SetOwnPropertyIgnoreAttributes(
2602 regexp, factory->last_index_string(), zero, writable).Check(); 2614 regexp, factory->last_index_string(), zero, writable).Check();
2603 return *regexp; 2615 return *regexp;
2604 } 2616 }
2605 2617
2606 2618
2607 RUNTIME_FUNCTION(Runtime_FinishArrayPrototypeSetup) { 2619 RUNTIME_FUNCTION(Runtime_FinishArrayPrototypeSetup) {
2608 HandleScope scope(isolate); 2620 HandleScope scope(isolate);
2609 DCHECK(args.length() == 1); 2621 DCHECK(args.length() == 1);
2610 CONVERT_ARG_HANDLE_CHECKED(JSArray, prototype, 0); 2622 CONVERT_ARG_HANDLE_CHECKED(JSArray, prototype, 0);
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15681 } 15693 }
15682 return NULL; 15694 return NULL;
15683 } 15695 }
15684 15696
15685 15697
15686 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) { 15698 const Runtime::Function* Runtime::FunctionForId(Runtime::FunctionId id) {
15687 return &(kIntrinsicFunctions[static_cast<int>(id)]); 15699 return &(kIntrinsicFunctions[static_cast<int>(id)]);
15688 } 15700 }
15689 15701
15690 } } // namespace v8::internal 15702 } } // namespace v8::internal
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