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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 #ifndef V8_JSON_STRINGIFIER_H_ | 5 #ifndef V8_JSON_STRINGIFIER_H_ |
6 #define V8_JSON_STRINGIFIER_H_ | 6 #define V8_JSON_STRINGIFIER_H_ |
7 | 7 |
8 #include "src/conversions.h" | 8 #include "src/conversions.h" |
9 #include "src/lookup.h" | 9 #include "src/lookup.h" |
10 #include "src/messages.h" | 10 #include "src/messages.h" |
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428 | 428 |
429 | 429 |
430 BasicJsonStringifier::Result BasicJsonStringifier::SerializeJSArray( | 430 BasicJsonStringifier::Result BasicJsonStringifier::SerializeJSArray( |
431 Handle<JSArray> object) { | 431 Handle<JSArray> object) { |
432 HandleScope handle_scope(isolate_); | 432 HandleScope handle_scope(isolate_); |
433 Result stack_push = StackPush(object); | 433 Result stack_push = StackPush(object); |
434 if (stack_push != SUCCESS) return stack_push; | 434 if (stack_push != SUCCESS) return stack_push; |
435 uint32_t length = 0; | 435 uint32_t length = 0; |
436 CHECK(object->length()->ToArrayLength(&length)); | 436 CHECK(object->length()->ToArrayLength(&length)); |
437 builder_.AppendCharacter('['); | 437 builder_.AppendCharacter('['); |
438 switch (object->GetElementsKind()) { | 438 Result result = SerializeJSArraySlow(object, length); |
439 case FAST_SMI_ELEMENTS: { | 439 if (result != SUCCESS) return result; |
440 Handle<FixedArray> elements( | |
441 FixedArray::cast(object->elements()), isolate_); | |
442 for (uint32_t i = 0; i < length; i++) { | |
443 if (i > 0) builder_.AppendCharacter(','); | |
444 SerializeSmi(Smi::cast(elements->get(i))); | |
445 } | |
446 break; | |
447 } | |
448 case FAST_DOUBLE_ELEMENTS: { | |
449 // Empty array is FixedArray but not FixedDoubleArray. | |
450 if (length == 0) break; | |
451 Handle<FixedDoubleArray> elements( | |
452 FixedDoubleArray::cast(object->elements()), isolate_); | |
453 for (uint32_t i = 0; i < length; i++) { | |
454 if (i > 0) builder_.AppendCharacter(','); | |
455 SerializeDouble(elements->get_scalar(i)); | |
456 } | |
457 break; | |
458 } | |
459 case FAST_ELEMENTS: { | |
460 Handle<FixedArray> elements( | |
461 FixedArray::cast(object->elements()), isolate_); | |
462 for (uint32_t i = 0; i < length; i++) { | |
463 if (i > 0) builder_.AppendCharacter(','); | |
464 Result result = | |
465 SerializeElement(isolate_, | |
466 Handle<Object>(elements->get(i), isolate_), | |
467 i); | |
468 if (result == SUCCESS) continue; | |
469 if (result == UNCHANGED) { | |
470 builder_.AppendCString("null"); | |
471 } else { | |
472 return result; | |
473 } | |
474 } | |
475 break; | |
476 } | |
477 // TODO(yangguo): The FAST_HOLEY_* cases could be handled in a faster way. | |
478 // They resemble the non-holey cases except that a prototype chain lookup | |
479 // is necessary for holes. | |
480 default: { | |
481 Result result = SerializeJSArraySlow(object, length); | |
482 if (result != SUCCESS) return result; | |
483 break; | |
484 } | |
485 } | |
486 builder_.AppendCharacter(']'); | 440 builder_.AppendCharacter(']'); |
487 StackPop(); | 441 StackPop(); |
488 return SUCCESS; | 442 return SUCCESS; |
489 } | 443 } |
490 | 444 |
491 | 445 |
492 BasicJsonStringifier::Result BasicJsonStringifier::SerializeJSArraySlow( | 446 BasicJsonStringifier::Result BasicJsonStringifier::SerializeJSArraySlow( |
493 Handle<JSArray> object, uint32_t length) { | 447 Handle<JSArray> object, uint32_t length) { |
494 for (uint32_t i = 0; i < length; i++) { | 448 for (uint32_t i = 0; i < length; i++) { |
495 if (i > 0) builder_.AppendCharacter(','); | 449 if (i > 0) builder_.AppendCharacter(','); |
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673 } else { | 627 } else { |
674 SerializeString_<uc16, uc16>(object); | 628 SerializeString_<uc16, uc16>(object); |
675 } | 629 } |
676 } | 630 } |
677 } | 631 } |
678 | 632 |
679 } // namespace internal | 633 } // namespace internal |
680 } // namespace v8 | 634 } // namespace v8 |
681 | 635 |
682 #endif // V8_JSON_STRINGIFIER_H_ | 636 #endif // V8_JSON_STRINGIFIER_H_ |
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