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1 // Copyright 2013 the V8 project authors. All rights reserved. | 1 // Copyright 2013 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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252 | 252 |
253 | 253 |
254 Handle<String> Factory::NewConsString(Handle<String> first, | 254 Handle<String> Factory::NewConsString(Handle<String> first, |
255 Handle<String> second) { | 255 Handle<String> second) { |
256 CALL_HEAP_FUNCTION(isolate(), | 256 CALL_HEAP_FUNCTION(isolate(), |
257 isolate()->heap()->AllocateConsString(*first, *second), | 257 isolate()->heap()->AllocateConsString(*first, *second), |
258 String); | 258 String); |
259 } | 259 } |
260 | 260 |
261 | 261 |
262 template<typename SinkChar, typename StringType> | |
263 Handle<String> ConcatStringContent(Handle<StringType> result, | |
264 Handle<String> first, | |
265 Handle<String> second) { | |
266 DisallowHeapAllocation pointer_stays_valid; | |
267 SinkChar* sink = result->GetChars(); | |
268 String::WriteToFlat(*first, sink, 0, first->length()); | |
269 String::WriteToFlat(*second, sink + first->length(), 0, second->length()); | |
270 return result; | |
271 } | |
272 | |
273 | |
274 Handle<String> Factory::NewFlatConcatString(Handle<String> first, | |
275 Handle<String> second) { | |
276 int total_length = first->length() + second->length(); | |
277 if (first->IsOneByteRepresentationUnderneath() && | |
278 second->IsOneByteRepresentationUnderneath()) { | |
279 return ConcatStringContent<uint8_t>( | |
280 NewRawOneByteString(total_length), first, second); | |
281 } else { | |
282 return ConcatStringContent<uc16>( | |
283 NewRawTwoByteString(total_length), first, second); | |
284 } | |
285 } | |
286 | |
287 | |
288 Handle<String> Factory::NewSubString(Handle<String> str, | 262 Handle<String> Factory::NewSubString(Handle<String> str, |
289 int begin, | 263 int begin, |
290 int end) { | 264 int end) { |
291 CALL_HEAP_FUNCTION(isolate(), | 265 CALL_HEAP_FUNCTION(isolate(), |
292 str->SubString(begin, end), | 266 str->SubString(begin, end), |
293 String); | 267 String); |
294 } | 268 } |
295 | 269 |
296 | 270 |
297 Handle<String> Factory::NewProperSubString(Handle<String> str, | 271 Handle<String> Factory::NewProperSubString(Handle<String> str, |
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1598 return Handle<Object>::null(); | 1572 return Handle<Object>::null(); |
1599 } | 1573 } |
1600 | 1574 |
1601 | 1575 |
1602 Handle<Object> Factory::ToBoolean(bool value) { | 1576 Handle<Object> Factory::ToBoolean(bool value) { |
1603 return value ? true_value() : false_value(); | 1577 return value ? true_value() : false_value(); |
1604 } | 1578 } |
1605 | 1579 |
1606 | 1580 |
1607 } } // namespace v8::internal | 1581 } } // namespace v8::internal |
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