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1 // Protocol Buffers - Google's data interchange format | 1 // Protocol Buffers - Google's data interchange format |
2 // Copyright 2008 Google Inc. All rights reserved. | 2 // Copyright 2008 Google Inc. All rights reserved. |
3 // https://developers.google.com/protocol-buffers/ | 3 // https://developers.google.com/protocol-buffers/ |
4 // | 4 // |
5 // Redistribution and use in source and binary forms, with or without | 5 // Redistribution and use in source and binary forms, with or without |
6 // modification, are permitted provided that the following conditions are | 6 // modification, are permitted provided that the following conditions are |
7 // met: | 7 // met: |
8 // | 8 // |
9 // * Redistributions of source code must retain the above copyright | 9 // * Redistributions of source code must retain the above copyright |
10 // notice, this list of conditions and the following disclaimer. | 10 // notice, this list of conditions and the following disclaimer. |
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73 } | 73 } |
74 int size() const { | 74 int size() const { |
75 return accessor_->Size(data_); | 75 return accessor_->Size(data_); |
76 } | 76 } |
77 T Get(int index) const { | 77 T Get(int index) const { |
78 return accessor_->template Get<T>(data_, index); | 78 return accessor_->template Get<T>(data_, index); |
79 } | 79 } |
80 | 80 |
81 typedef IteratorType iterator; | 81 typedef IteratorType iterator; |
82 typedef IteratorType const_iterator; | 82 typedef IteratorType const_iterator; |
83 typedef T value_type; | |
84 typedef T& reference; | |
85 typedef const T& const_reference; | |
86 typedef int size_type; | |
87 typedef ptrdiff_t difference_type; | |
88 | |
89 iterator begin() const { | 83 iterator begin() const { |
90 return iterator(data_, accessor_, true); | 84 return iterator(data_, accessor_, true); |
91 } | 85 } |
92 iterator end() const { | 86 iterator end() const { |
93 return iterator(data_, accessor_, false); | 87 return iterator(data_, accessor_, false); |
94 } | 88 } |
95 | 89 |
96 private: | 90 private: |
97 friend class Reflection; | 91 friend class Reflection; |
98 RepeatedFieldRef( | 92 RepeatedFieldRef( |
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201 return *static_cast<const T*>(accessor_->Get(data_, index, scratch_space)); | 195 return *static_cast<const T*>(accessor_->Get(data_, index, scratch_space)); |
202 } | 196 } |
203 // Create a new message of the same type as the messages stored in this | 197 // Create a new message of the same type as the messages stored in this |
204 // repeated field. Caller takes ownership of the returned object. | 198 // repeated field. Caller takes ownership of the returned object. |
205 T* NewMessage() const { | 199 T* NewMessage() const { |
206 return static_cast<T*>(default_instance_->New()); | 200 return static_cast<T*>(default_instance_->New()); |
207 } | 201 } |
208 | 202 |
209 typedef IteratorType iterator; | 203 typedef IteratorType iterator; |
210 typedef IteratorType const_iterator; | 204 typedef IteratorType const_iterator; |
211 typedef T value_type; | |
212 typedef T& reference; | |
213 typedef const T& const_reference; | |
214 typedef int size_type; | |
215 typedef ptrdiff_t difference_type; | |
216 | |
217 iterator begin() const { | 205 iterator begin() const { |
218 return iterator(data_, accessor_, true, NewMessage()); | 206 return iterator(data_, accessor_, true, NewMessage()); |
219 } | 207 } |
220 iterator end() const { | 208 iterator end() const { |
221 // The end iterator must not be dereferenced, no need for scratch space. | 209 return iterator(data_, accessor_, false, NewMessage()); |
222 return iterator(data_, accessor_, false, NULL); | |
223 } | 210 } |
224 | 211 |
225 private: | 212 private: |
226 friend class Reflection; | 213 friend class Reflection; |
227 RepeatedFieldRef( | 214 RepeatedFieldRef( |
228 const Message& message, | 215 const Message& message, |
229 const FieldDescriptor* field) { | 216 const FieldDescriptor* field) { |
230 const Reflection* reflection = message.GetReflection(); | 217 const Reflection* reflection = message.GetReflection(); |
231 data_ = reflection->RepeatedFieldData( | 218 data_ = reflection->RepeatedFieldData( |
232 const_cast<Message*>(&message), field, | 219 const_cast<Message*>(&message), field, |
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362 const Field* data, int index, Value* scratch_space) const = 0; | 349 const Field* data, int index, Value* scratch_space) const = 0; |
363 | 350 |
364 virtual void Clear(Field* data) const = 0; | 351 virtual void Clear(Field* data) const = 0; |
365 virtual void Set(Field* data, int index, const Value* value) const = 0; | 352 virtual void Set(Field* data, int index, const Value* value) const = 0; |
366 virtual void Add(Field* data, const Value* value) const = 0; | 353 virtual void Add(Field* data, const Value* value) const = 0; |
367 virtual void RemoveLast(Field* data) const = 0; | 354 virtual void RemoveLast(Field* data) const = 0; |
368 virtual void SwapElements(Field* data, int index1, int index2) const = 0; | 355 virtual void SwapElements(Field* data, int index1, int index2) const = 0; |
369 virtual void Swap(Field* data, const RepeatedFieldAccessor* other_mutator, | 356 virtual void Swap(Field* data, const RepeatedFieldAccessor* other_mutator, |
370 Field* other_data) const = 0; | 357 Field* other_data) const = 0; |
371 | 358 |
372 // Create an iterator that points at the beginning of the repeated field. | 359 // Create an iterator that points at the begining of the repeated field. |
373 virtual Iterator* BeginIterator(const Field* data) const = 0; | 360 virtual Iterator* BeginIterator(const Field* data) const = 0; |
374 // Create an iterator that points at the end of the repeated field. | 361 // Create an iterator that points at the end of the repeated field. |
375 virtual Iterator* EndIterator(const Field* data) const = 0; | 362 virtual Iterator* EndIterator(const Field* data) const = 0; |
376 // Make a copy of an iterator and return the new copy. | 363 // Make a copy of an iterator and return the new copy. |
377 virtual Iterator* CopyIterator(const Field* data, | 364 virtual Iterator* CopyIterator(const Field* data, |
378 const Iterator* iterator) const = 0; | 365 const Iterator* iterator) const = 0; |
379 // Move an iterator to point to the next element. | 366 // Move an iterator to point to the next element. |
380 virtual Iterator* AdvanceIterator(const Field* data, | 367 virtual Iterator* AdvanceIterator(const Field* data, |
381 Iterator* iterator) const = 0; | 368 Iterator* iterator) const = 0; |
382 // Compare whether two iterators point to the same element. | 369 // Compare whether two iterators point to the same element. |
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434 template<typename T> | 421 template<typename T> |
435 class RepeatedFieldRefIterator | 422 class RepeatedFieldRefIterator |
436 : public std::iterator<std::forward_iterator_tag, T> { | 423 : public std::iterator<std::forward_iterator_tag, T> { |
437 typedef typename RefTypeTraits<T>::AccessorValueType AccessorValueType; | 424 typedef typename RefTypeTraits<T>::AccessorValueType AccessorValueType; |
438 typedef typename RefTypeTraits<T>::IteratorValueType IteratorValueType; | 425 typedef typename RefTypeTraits<T>::IteratorValueType IteratorValueType; |
439 typedef typename RefTypeTraits<T>::IteratorPointerType IteratorPointerType; | 426 typedef typename RefTypeTraits<T>::IteratorPointerType IteratorPointerType; |
440 | 427 |
441 public: | 428 public: |
442 // Constructor for non-message fields. | 429 // Constructor for non-message fields. |
443 RepeatedFieldRefIterator(const void* data, | 430 RepeatedFieldRefIterator(const void* data, |
444 const RepeatedFieldAccessor* accessor, bool begin) | 431 const RepeatedFieldAccessor* accessor, |
445 : data_(data), | 432 bool begin) |
446 accessor_(accessor), | 433 : data_(data), accessor_(accessor), |
447 iterator_(begin ? accessor->BeginIterator(data) | 434 iterator_(begin ? accessor->BeginIterator(data) : |
448 : accessor->EndIterator(data)), | 435 accessor->EndIterator(data)), |
449 // The end iterator must not be dereferenced, no need for scratch space. | 436 scratch_space_(new AccessorValueType) { |
450 scratch_space_(begin ? new AccessorValueType : NULL) {} | 437 } |
451 // Constructor for message fields. | 438 // Constructor for message fields. |
452 RepeatedFieldRefIterator(const void* data, | 439 RepeatedFieldRefIterator(const void* data, |
453 const RepeatedFieldAccessor* accessor, | 440 const RepeatedFieldAccessor* accessor, |
454 bool begin, | 441 bool begin, |
455 AccessorValueType* scratch_space) | 442 AccessorValueType* scratch_space) |
456 : data_(data), accessor_(accessor), | 443 : data_(data), accessor_(accessor), |
457 iterator_(begin ? accessor->BeginIterator(data) : | 444 iterator_(begin ? accessor->BeginIterator(data) : |
458 accessor->EndIterator(data)), | 445 accessor->EndIterator(data)), |
459 scratch_space_(scratch_space) { | 446 scratch_space_(scratch_space) { |
460 } | 447 } |
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604 FieldDescriptor::CPPTYPE_MESSAGE; | 591 FieldDescriptor::CPPTYPE_MESSAGE; |
605 static const Descriptor* GetMessageFieldDescriptor() { | 592 static const Descriptor* GetMessageFieldDescriptor() { |
606 return MessageDescriptorGetter<T>::get(); | 593 return MessageDescriptorGetter<T>::get(); |
607 } | 594 } |
608 }; | 595 }; |
609 } // namespace internal | 596 } // namespace internal |
610 } // namespace protobuf | 597 } // namespace protobuf |
611 } // namespace google | 598 } // namespace google |
612 | 599 |
613 #endif // GOOGLE_PROTOBUF_REFLECTION_H__ | 600 #endif // GOOGLE_PROTOBUF_REFLECTION_H__ |
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