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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef MOJO_PUBLIC_CPP_BINDINGS_ARRAY_H_ | |
| 6 #define MOJO_PUBLIC_CPP_BINDINGS_ARRAY_H_ | |
| 7 | |
| 8 #include <string.h> | |
| 9 | |
| 10 #include <algorithm> | |
| 11 #include <string> | |
| 12 #include <vector> | |
| 13 | |
| 14 #include "mojo/public/cpp/bindings/lib/array_internal.h" | |
| 15 #include "mojo/public/cpp/bindings/lib/bindings_internal.h" | |
| 16 #include "mojo/public/cpp/bindings/lib/template_util.h" | |
| 17 #include "mojo/public/cpp/bindings/type_converter.h" | |
| 18 | |
| 19 namespace mojo { | |
| 20 | |
| 21 template <typename T> | |
| 22 class Array { | |
| 23 MOJO_MOVE_ONLY_TYPE(Array) | |
| 24 public: | |
| 25 typedef internal::ArrayTraits<T, internal::IsMoveOnlyType<T>::value> Traits; | |
| 26 typedef typename Traits::ConstRefType ConstRefType; | |
| 27 typedef typename Traits::RefType RefType; | |
| 28 typedef typename Traits::StorageType StorageType; | |
| 29 typedef typename Traits::ForwardType ForwardType; | |
| 30 | |
| 31 typedef internal::Array_Data<typename internal::WrapperTraits<T>::DataType> | |
| 32 Data_; | |
| 33 | |
| 34 Array() : is_null_(true) {} | |
| 35 explicit Array(size_t size) : vec_(size), is_null_(false) { | |
| 36 Traits::Initialize(&vec_); | |
| 37 } | |
| 38 ~Array() { Traits::Finalize(&vec_); } | |
| 39 | |
| 40 Array(Array&& other) : is_null_(true) { Take(&other); } | |
| 41 Array& operator=(Array&& other) { | |
| 42 Take(&other); | |
| 43 return *this; | |
| 44 } | |
| 45 | |
| 46 static Array New(size_t size) { return Array(size).Pass(); } | |
| 47 | |
| 48 template <typename U> | |
| 49 static Array From(const U& other) { | |
| 50 return TypeConverter<Array, U>::Convert(other); | |
| 51 } | |
| 52 | |
| 53 template <typename U> | |
| 54 U To() const { | |
| 55 return TypeConverter<U, Array>::Convert(*this); | |
| 56 } | |
| 57 | |
| 58 void reset() { | |
| 59 if (!vec_.empty()) { | |
| 60 Traits::Finalize(&vec_); | |
| 61 vec_.clear(); | |
| 62 } | |
| 63 is_null_ = true; | |
| 64 } | |
| 65 | |
| 66 bool is_null() const { return is_null_; } | |
| 67 | |
| 68 ConstRefType front() const { return vec_.front(); } | |
| 69 RefType front() { return vec_.front(); } | |
| 70 | |
| 71 size_t size() const { return vec_.size(); } | |
| 72 | |
| 73 ConstRefType at(size_t offset) const { return Traits::at(&vec_, offset); } | |
| 74 ConstRefType operator[](size_t offset) const { return at(offset); } | |
| 75 | |
| 76 RefType at(size_t offset) { return Traits::at(&vec_, offset); } | |
| 77 RefType operator[](size_t offset) { return at(offset); } | |
| 78 | |
| 79 void push_back(ForwardType value) { | |
| 80 is_null_ = false; | |
| 81 Traits::PushBack(&vec_, value); | |
| 82 } | |
| 83 | |
| 84 void resize(size_t size) { | |
| 85 is_null_ = false; | |
| 86 Traits::Resize(&vec_, size); | |
| 87 } | |
| 88 | |
| 89 const std::vector<StorageType>& storage() const { return vec_; } | |
| 90 operator const std::vector<StorageType>&() const { return vec_; } | |
| 91 | |
| 92 void Swap(Array* other) { | |
| 93 std::swap(is_null_, other->is_null_); | |
| 94 vec_.swap(other->vec_); | |
| 95 } | |
| 96 void Swap(std::vector<StorageType>* other) { | |
| 97 is_null_ = false; | |
| 98 vec_.swap(*other); | |
| 99 } | |
| 100 | |
| 101 // Please note that calling this method will fail compilation if the element | |
| 102 // type cannot be cloned (which usually means that it is a Mojo handle type or | |
| 103 // a type contains Mojo handles). | |
| 104 Array Clone() const { | |
| 105 Array result; | |
| 106 result.is_null_ = is_null_; | |
| 107 Traits::Clone(vec_, &result.vec_); | |
| 108 return result.Pass(); | |
| 109 } | |
| 110 | |
| 111 bool Equals(const Array& other) const { | |
| 112 if (is_null() != other.is_null()) | |
| 113 return false; | |
| 114 if (size() != other.size()) | |
| 115 return false; | |
| 116 for (size_t i = 0; i < size(); ++i) { | |
| 117 if (!internal::ValueTraits<T>::Equals(at(i), other.at(i))) | |
| 118 return false; | |
| 119 } | |
| 120 return true; | |
| 121 } | |
| 122 | |
| 123 private: | |
| 124 typedef std::vector<StorageType> Array::*Testable; | |
| 125 | |
| 126 public: | |
| 127 operator Testable() const { return is_null_ ? 0 : &Array::vec_; } | |
| 128 | |
| 129 private: | |
| 130 void Take(Array* other) { | |
| 131 reset(); | |
| 132 Swap(other); | |
| 133 } | |
| 134 | |
| 135 std::vector<StorageType> vec_; | |
| 136 bool is_null_; | |
| 137 }; | |
| 138 | |
| 139 template <typename T, typename E> | |
| 140 struct TypeConverter<Array<T>, std::vector<E>> { | |
| 141 static Array<T> Convert(const std::vector<E>& input) { | |
| 142 Array<T> result(input.size()); | |
| 143 for (size_t i = 0; i < input.size(); ++i) | |
| 144 result[i] = TypeConverter<T, E>::Convert(input[i]); | |
| 145 return result.Pass(); | |
| 146 } | |
| 147 }; | |
| 148 | |
| 149 template <typename E, typename T> | |
| 150 struct TypeConverter<std::vector<E>, Array<T>> { | |
| 151 static std::vector<E> Convert(const Array<T>& input) { | |
| 152 std::vector<E> result; | |
| 153 if (!input.is_null()) { | |
| 154 result.resize(input.size()); | |
| 155 for (size_t i = 0; i < input.size(); ++i) | |
| 156 result[i] = TypeConverter<E, T>::Convert(input[i]); | |
| 157 } | |
| 158 return result; | |
| 159 } | |
| 160 }; | |
| 161 | |
| 162 } // namespace mojo | |
| 163 | |
| 164 #endif // MOJO_PUBLIC_CPP_BINDINGS_ARRAY_H_ | |
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