2 * Copyright (C) 2015 The Android Open Source Project
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
17 #ifndef ANDROID_VALUE_H
18 #define ANDROID_VALUE_H
26 #include <binder/Parcelable.h>
27 #include <binder/PersistableBundle.h>
28 #include <binder/Map.h>
29 #include <utils/String8.h>
30 #include <utils/String16.h>
31 #include <utils/StrongPointer.h>
40 * A limited C++ generic type. The purpose of this class is to allow C++
41 * programs to make use of (or implement) Binder interfaces which make use
42 * the Java "Object" generic type (either via the use of the Map type or
43 * some other mechanism).
45 * This class only supports a limited set of types, but additional types
46 * may be easily added to this class in the future as needed---without
47 * breaking binary compatability.
49 * This class was written in such a way as to help avoid type errors by
50 * giving each type their own explicity-named accessor methods (rather than
51 * overloaded methods).
53 * When reading or writing this class to a Parcel, use the `writeValue()`
54 * and `readValue()` methods.
67 #ifdef LIBBINDER_VALUE_SUPPORTS_TYPE_INFO
68 const std::type_info& type() const;
71 int32_t parcelType() const;
73 bool operator==(const Value& rhs) const;
74 bool operator!=(const Value& rhs) const { return !this->operator==(rhs); }
76 Value(const Value& value);
77 Value(const bool& value);
78 Value(const int8_t& value);
79 Value(const int32_t& value);
80 Value(const int64_t& value);
81 Value(const double& value);
82 Value(const String16& value);
83 Value(const std::vector<bool>& value);
84 Value(const std::vector<uint8_t>& value);
85 Value(const std::vector<int32_t>& value);
86 Value(const std::vector<int64_t>& value);
87 Value(const std::vector<double>& value);
88 Value(const std::vector<String16>& value);
89 Value(const os::PersistableBundle& value);
90 Value(const binder::Map& value);
92 Value& operator=(const Value& rhs);
93 Value& operator=(const int8_t& rhs);
94 Value& operator=(const bool& rhs);
95 Value& operator=(const int32_t& rhs);
96 Value& operator=(const int64_t& rhs);
97 Value& operator=(const double& rhs);
98 Value& operator=(const String16& rhs);
99 Value& operator=(const std::vector<bool>& rhs);
100 Value& operator=(const std::vector<uint8_t>& rhs);
101 Value& operator=(const std::vector<int32_t>& rhs);
102 Value& operator=(const std::vector<int64_t>& rhs);
103 Value& operator=(const std::vector<double>& rhs);
104 Value& operator=(const std::vector<String16>& rhs);
105 Value& operator=(const os::PersistableBundle& rhs);
106 Value& operator=(const binder::Map& rhs);
108 void putBoolean(const bool& value);
109 void putByte(const int8_t& value);
110 void putInt(const int32_t& value);
111 void putLong(const int64_t& value);
112 void putDouble(const double& value);
113 void putString(const String16& value);
114 void putBooleanVector(const std::vector<bool>& value);
115 void putByteVector(const std::vector<uint8_t>& value);
116 void putIntVector(const std::vector<int32_t>& value);
117 void putLongVector(const std::vector<int64_t>& value);
118 void putDoubleVector(const std::vector<double>& value);
119 void putStringVector(const std::vector<String16>& value);
120 void putPersistableBundle(const os::PersistableBundle& value);
121 void putMap(const binder::Map& value);
123 bool getBoolean(bool* out) const;
124 bool getByte(int8_t* out) const;
125 bool getInt(int32_t* out) const;
126 bool getLong(int64_t* out) const;
127 bool getDouble(double* out) const;
128 bool getString(String16* out) const;
129 bool getBooleanVector(std::vector<bool>* out) const;
130 bool getByteVector(std::vector<uint8_t>* out) const;
131 bool getIntVector(std::vector<int32_t>* out) const;
132 bool getLongVector(std::vector<int64_t>* out) const;
133 bool getDoubleVector(std::vector<double>* out) const;
134 bool getStringVector(std::vector<String16>* out) const;
135 bool getPersistableBundle(os::PersistableBundle* out) const;
136 bool getMap(binder::Map* out) const;
138 bool isBoolean() const;
142 bool isDouble() const;
143 bool isString() const;
144 bool isBooleanVector() const;
145 bool isByteVector() const;
146 bool isIntVector() const;
147 bool isLongVector() const;
148 bool isDoubleVector() const;
149 bool isStringVector() const;
150 bool isPersistableBundle() const;
153 // String Convenience Adapters
154 // ---------------------------
156 Value(const String8& value): Value(String16(value)) { }
157 Value(const ::std::string& value): Value(String8(value.c_str())) { }
158 void putString(const String8& value) { return putString(String16(value)); }
159 void putString(const ::std::string& value) { return putString(String8(value.c_str())); }
160 Value& operator=(const String8& rhs) { return *this = String16(rhs); }
161 Value& operator=(const ::std::string& rhs) { return *this = String8(rhs.c_str()); }
162 bool getString(String8* out) const;
163 bool getString(::std::string* out) const;
167 // This allows ::android::Parcel to call the two methods below.
168 friend class ::android::Parcel;
170 // This is called by ::android::Parcel::writeValue()
171 status_t writeToParcel(Parcel* parcel) const;
173 // This is called by ::android::Parcel::readValue()
174 status_t readFromParcel(const Parcel* parcel);
176 template<typename T> class Content;
179 ContentBase* mContent;
182 } // namespace binder
184 } // namespace android
186 #endif // ANDROID_VALUE_H