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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 // Redistribution and use in source and binary forms, with or without | 2 // Redistribution and use in source and binary forms, with or without |
3 // modification, are permitted provided that the following conditions are | 3 // modification, are permitted provided that the following conditions are |
4 // met: | 4 // met: |
5 // | 5 // |
6 // * Redistributions of source code must retain the above copyright | 6 // * Redistributions of source code must retain the above copyright |
7 // notice, this list of conditions and the following disclaimer. | 7 // notice, this list of conditions and the following disclaimer. |
8 // * Redistributions in binary form must reproduce the above | 8 // * Redistributions in binary form must reproduce the above |
9 // copyright notice, this list of conditions and the following | 9 // copyright notice, this list of conditions and the following |
10 // disclaimer in the documentation and/or other materials provided | 10 // disclaimer in the documentation and/or other materials provided |
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288 static const int kJsonQuoteWorstCaseBlowup = 6; | 288 static const int kJsonQuoteWorstCaseBlowup = 6; |
289 static const int kSpaceForQuotes = 2; | 289 static const int kSpaceForQuotes = 2; |
290 int worst_case_length = | 290 int worst_case_length = |
291 object->length() * kJsonQuoteWorstCaseBlowup + kSpaceForQuotes; | 291 object->length() * kJsonQuoteWorstCaseBlowup + kSpaceForQuotes; |
292 | 292 |
293 if (worst_case_length > 32 * KB) { // Slow path if too large. | 293 if (worst_case_length > 32 * KB) { // Slow path if too large. |
294 BasicJsonStringifier stringifier(isolate); | 294 BasicJsonStringifier stringifier(isolate); |
295 return stringifier.Stringify(object); | 295 return stringifier.Stringify(object); |
296 } | 296 } |
297 | 297 |
298 object = FlattenGetString(object); | 298 FlattenString(object); |
299 ASSERT(object->IsFlat()); | 299 ASSERT(object->IsFlat()); |
300 if (object->IsOneByteRepresentation()) { | 300 if (object->IsOneByteRepresentationUnderneath()) { |
301 Handle<String> result = | 301 Handle<String> result = |
302 isolate->factory()->NewRawOneByteString(worst_case_length); | 302 isolate->factory()->NewRawOneByteString(worst_case_length); |
303 AssertNoAllocation no_alloc; | 303 AssertNoAllocation no_alloc; |
304 const uint8_t* start = object->IsSeqOneByteString() | |
305 ? SeqOneByteString::cast(*object)->GetChars() | |
306 : ExternalAsciiString::cast(*object)->GetChars(); | |
307 return StringifyString_<SeqOneByteString>( | 304 return StringifyString_<SeqOneByteString>( |
308 isolate, | 305 isolate, |
309 Vector<const uint8_t>(start, object->length()), | 306 object->GetFlatContent().ToOneByteVector(), |
310 result); | 307 result); |
311 } else { | 308 } else { |
312 Handle<String> result = | 309 Handle<String> result = |
313 isolate->factory()->NewRawTwoByteString(worst_case_length); | 310 isolate->factory()->NewRawTwoByteString(worst_case_length); |
314 AssertNoAllocation no_alloc; | 311 AssertNoAllocation no_alloc; |
315 const uc16* start = object->IsSeqTwoByteString() | |
316 ? SeqTwoByteString::cast(*object)->GetChars() | |
317 : ExternalTwoByteString::cast(*object)->GetChars(); | |
318 return StringifyString_<SeqTwoByteString>( | 312 return StringifyString_<SeqTwoByteString>( |
319 isolate, | 313 isolate, |
320 Vector<const uc16>(start, object->length()), | 314 object->GetFlatContent().ToUC16Vector(), |
321 result); | 315 result); |
322 } | 316 } |
323 } | 317 } |
324 | 318 |
325 | 319 |
326 template <typename ResultType, typename Char> | 320 template <typename ResultType, typename Char> |
327 MaybeObject* BasicJsonStringifier::StringifyString_(Isolate* isolate, | 321 MaybeObject* BasicJsonStringifier::StringifyString_(Isolate* isolate, |
328 Vector<Char> vector, | 322 Vector<Char> vector, |
329 Handle<String> result) { | 323 Handle<String> result) { |
330 AssertNoAllocation no_allocation; | 324 AssertNoAllocation no_allocation; |
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845 SerializeString_<false, uint8_t>(object); | 839 SerializeString_<false, uint8_t>(object); |
846 } else { | 840 } else { |
847 SerializeString_<false, uc16>(object); | 841 SerializeString_<false, uc16>(object); |
848 } | 842 } |
849 } | 843 } |
850 } | 844 } |
851 | 845 |
852 } } // namespace v8::internal | 846 } } // namespace v8::internal |
853 | 847 |
854 #endif // V8_JSON_STRINGIFIER_H_ | 848 #endif // V8_JSON_STRINGIFIER_H_ |
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