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1 // Copyright 2011 the V8 project authors. All rights reserved. | 1 // Copyright 2011 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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294 Handle<JSFunction> object_constructor( | 294 Handle<JSFunction> object_constructor( |
295 isolate()->native_context()->object_function()); | 295 isolate()->native_context()->object_function()); |
296 Handle<JSObject> json_object = | 296 Handle<JSObject> json_object = |
297 isolate()->factory()->NewJSObject(object_constructor); | 297 isolate()->factory()->NewJSObject(object_constructor); |
298 ASSERT_EQ(c0_, '{'); | 298 ASSERT_EQ(c0_, '{'); |
299 | 299 |
300 AdvanceSkipWhitespace(); | 300 AdvanceSkipWhitespace(); |
301 if (c0_ != '}') { | 301 if (c0_ != '}') { |
302 do { | 302 do { |
303 if (c0_ != '"') return ReportUnexpectedCharacter(); | 303 if (c0_ != '"') return ReportUnexpectedCharacter(); |
304 Handle<String> key = ParseJsonSymbol(); | |
305 if (key.is_null() || c0_ != ':') return ReportUnexpectedCharacter(); | |
306 AdvanceSkipWhitespace(); | |
307 Handle<Object> value = ParseJsonValue(); | |
308 if (value.is_null()) return ReportUnexpectedCharacter(); | |
309 | 304 |
310 uint32_t index; | 305 int start_position = position_; |
311 if (key->AsArrayIndex(&index)) { | 306 Advance(); |
| 307 |
| 308 uint32_t index = 0; |
| 309 while (c0_ >= '0' && c0_ <= '9') { |
| 310 int d = c0_ - '0'; |
| 311 if (index > 429496729U - ((d > 5) ? 1 : 0)) break; |
| 312 index = (index * 10) + d; |
| 313 Advance(); |
| 314 } |
| 315 |
| 316 if (position_ != start_position + 1 && c0_ == '"') { |
| 317 AdvanceSkipWhitespace(); |
| 318 |
| 319 if (c0_ != ':') return ReportUnexpectedCharacter(); |
| 320 AdvanceSkipWhitespace(); |
| 321 Handle<Object> value = ParseJsonValue(); |
| 322 if (value.is_null()) return ReportUnexpectedCharacter(); |
| 323 |
312 JSObject::SetOwnElement(json_object, index, value, kNonStrictMode); | 324 JSObject::SetOwnElement(json_object, index, value, kNonStrictMode); |
313 } else if (key->Equals(isolate()->heap()->Proto_symbol())) { | |
314 prototype = value; | |
315 } else { | 325 } else { |
316 if (JSObject::TryTransitionToField(json_object, key)) { | 326 position_ = start_position; |
317 json_object->FastPropertyAtPut(current_index++, *value); | 327 #ifdef DEBUG |
| 328 c0_ = '"'; |
| 329 #endif |
| 330 |
| 331 Handle<String> key = ParseJsonSymbol(); |
| 332 if (key.is_null() || c0_ != ':') return ReportUnexpectedCharacter(); |
| 333 |
| 334 AdvanceSkipWhitespace(); |
| 335 Handle<Object> value = ParseJsonValue(); |
| 336 if (value.is_null()) return ReportUnexpectedCharacter(); |
| 337 |
| 338 if (key->Equals(isolate()->heap()->Proto_symbol())) { |
| 339 prototype = value; |
318 } else { | 340 } else { |
319 JSObject::SetLocalPropertyIgnoreAttributes( | 341 if (JSObject::TryTransitionToField(json_object, key)) { |
320 json_object, key, value, NONE); | 342 json_object->FastPropertyAtPut(current_index++, *value); |
| 343 } else { |
| 344 JSObject::SetLocalPropertyIgnoreAttributes( |
| 345 json_object, key, value, NONE); |
| 346 } |
321 } | 347 } |
322 } | 348 } |
323 } while (MatchSkipWhiteSpace(',')); | 349 } while (MatchSkipWhiteSpace(',')); |
324 if (c0_ != '}') { | 350 if (c0_ != '}') { |
325 return ReportUnexpectedCharacter(); | 351 return ReportUnexpectedCharacter(); |
326 } | 352 } |
327 if (!prototype.is_null()) SetPrototype(json_object, prototype); | 353 if (!prototype.is_null()) SetPrototype(json_object, prototype); |
328 } | 354 } |
329 AdvanceSkipWhitespace(); | 355 AdvanceSkipWhitespace(); |
330 return json_object; | 356 return json_object; |
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367 Advance(); | 393 Advance(); |
368 negative = true; | 394 negative = true; |
369 } | 395 } |
370 if (c0_ == '0') { | 396 if (c0_ == '0') { |
371 Advance(); | 397 Advance(); |
372 // Prefix zero is only allowed if it's the only digit before | 398 // Prefix zero is only allowed if it's the only digit before |
373 // a decimal point or exponent. | 399 // a decimal point or exponent. |
374 if ('0' <= c0_ && c0_ <= '9') return ReportUnexpectedCharacter(); | 400 if ('0' <= c0_ && c0_ <= '9') return ReportUnexpectedCharacter(); |
375 } else { | 401 } else { |
376 int i = 0; | 402 int i = 0; |
377 int digits = 0; | |
378 if (c0_ < '1' || c0_ > '9') return ReportUnexpectedCharacter(); | 403 if (c0_ < '1' || c0_ > '9') return ReportUnexpectedCharacter(); |
379 do { | 404 do { |
380 i = i * 10 + c0_ - '0'; | 405 i = i * 10 + c0_ - '0'; |
381 digits++; | |
382 Advance(); | 406 Advance(); |
383 } while (c0_ >= '0' && c0_ <= '9'); | 407 } while (c0_ >= '0' && c0_ <= '9' && i <= (kMaxInt - 9) / 10); |
384 if (c0_ != '.' && c0_ != 'e' && c0_ != 'E' && digits < 10) { | 408 if (c0_ != '.' && c0_ != 'e' && c0_ != 'E') { |
385 SkipWhitespace(); | 409 SkipWhitespace(); |
386 return Handle<Smi>(Smi::FromInt((negative ? -i : i)), isolate()); | 410 return Handle<Smi>(Smi::FromInt((negative ? -i : i)), isolate()); |
387 } | 411 } |
388 } | 412 } |
389 if (c0_ == '.') { | 413 if (c0_ == '.') { |
390 Advance(); | 414 Advance(); |
391 if (c0_ < '0' || c0_ > '9') return ReportUnexpectedCharacter(); | 415 if (c0_ < '0' || c0_ > '9') return ReportUnexpectedCharacter(); |
392 do { | 416 do { |
393 Advance(); | 417 Advance(); |
394 } while (c0_ >= '0' && c0_ <= '9'); | 418 } while (c0_ >= '0' && c0_ <= '9'); |
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649 } | 673 } |
650 ASSERT_EQ('"', c0_); | 674 ASSERT_EQ('"', c0_); |
651 // Advance past the last '"'. | 675 // Advance past the last '"'. |
652 AdvanceSkipWhitespace(); | 676 AdvanceSkipWhitespace(); |
653 return result; | 677 return result; |
654 } | 678 } |
655 | 679 |
656 } } // namespace v8::internal | 680 } } // namespace v8::internal |
657 | 681 |
658 #endif // V8_JSON_PARSER_H_ | 682 #endif // V8_JSON_PARSER_H_ |
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