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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_VALUE_H
#define ANDROID_VALUE_H
#include <stdint.h>
#include <map>
#include <set>
#include <vector>
#include <string>
#include <binder/Parcelable.h>
#include <binder/PersistableBundle.h>
#include <binder/Map.h>
#include <utils/String8.h>
#include <utils/String16.h>
#include <utils/StrongPointer.h>
namespace android {
class Parcel;
namespace binder {
/**
* A limited C++ generic type. The purpose of this class is to allow C++
* programs to make use of (or implement) Binder interfaces which make use
* the Java "Object" generic type (either via the use of the Map type or
* some other mechanism).
*
* This class only supports a limited set of types, but additional types
* may be easily added to this class in the future as needed---without
* breaking binary compatability.
*
* This class was written in such a way as to help avoid type errors by
* giving each type their own explicity-named accessor methods (rather than
* overloaded methods).
*
* When reading or writing this class to a Parcel, use the `writeValue()`
* and `readValue()` methods.
*/
class Value {
public:
Value();
virtual ~Value();
Value& swap(Value &);
bool empty() const;
void clear();
#ifdef LIBBINDER_VALUE_SUPPORTS_TYPE_INFO
const std::type_info& type() const;
#endif
int32_t parcelType() const;
bool operator==(const Value& rhs) const;
bool operator!=(const Value& rhs) const { return !this->operator==(rhs); }
Value(const Value& value);
Value(const bool& value); // NOLINT(google-explicit-constructor)
Value(const int8_t& value); // NOLINT(google-explicit-constructor)
Value(const int32_t& value); // NOLINT(google-explicit-constructor)
Value(const int64_t& value); // NOLINT(google-explicit-constructor)
Value(const double& value); // NOLINT(google-explicit-constructor)
Value(const String16& value); // NOLINT(google-explicit-constructor)
Value(const std::vector<bool>& value); // NOLINT(google-explicit-constructor)
Value(const std::vector<uint8_t>& value); // NOLINT(google-explicit-constructor)
Value(const std::vector<int32_t>& value); // NOLINT(google-explicit-constructor)
Value(const std::vector<int64_t>& value); // NOLINT(google-explicit-constructor)
Value(const std::vector<double>& value); // NOLINT(google-explicit-constructor)
Value(const std::vector<String16>& value); // NOLINT(google-explicit-constructor)
Value(const os::PersistableBundle& value); // NOLINT(google-explicit-constructor)
Value(const binder::Map& value); // NOLINT(google-explicit-constructor)
Value& operator=(const Value& rhs);
Value& operator=(const int8_t& rhs);
Value& operator=(const bool& rhs);
Value& operator=(const int32_t& rhs);
Value& operator=(const int64_t& rhs);
Value& operator=(const double& rhs);
Value& operator=(const String16& rhs);
Value& operator=(const std::vector<bool>& rhs);
Value& operator=(const std::vector<uint8_t>& rhs);
Value& operator=(const std::vector<int32_t>& rhs);
Value& operator=(const std::vector<int64_t>& rhs);
Value& operator=(const std::vector<double>& rhs);
Value& operator=(const std::vector<String16>& rhs);
Value& operator=(const os::PersistableBundle& rhs);
Value& operator=(const binder::Map& rhs);
void putBoolean(const bool& value);
void putByte(const int8_t& value);
void putInt(const int32_t& value);
void putLong(const int64_t& value);
void putDouble(const double& value);
void putString(const String16& value);
void putBooleanVector(const std::vector<bool>& value);
void putByteVector(const std::vector<uint8_t>& value);
void putIntVector(const std::vector<int32_t>& value);
void putLongVector(const std::vector<int64_t>& value);
void putDoubleVector(const std::vector<double>& value);
void putStringVector(const std::vector<String16>& value);
void putPersistableBundle(const os::PersistableBundle& value);
void putMap(const binder::Map& value);
bool getBoolean(bool* out) const;
bool getByte(int8_t* out) const;
bool getInt(int32_t* out) const;
bool getLong(int64_t* out) const;
bool getDouble(double* out) const;
bool getString(String16* out) const;
bool getBooleanVector(std::vector<bool>* out) const;
bool getByteVector(std::vector<uint8_t>* out) const;
bool getIntVector(std::vector<int32_t>* out) const;
bool getLongVector(std::vector<int64_t>* out) const;
bool getDoubleVector(std::vector<double>* out) const;
bool getStringVector(std::vector<String16>* out) const;
bool getPersistableBundle(os::PersistableBundle* out) const;
bool getMap(binder::Map* out) const;
bool isBoolean() const;
bool isByte() const;
bool isInt() const;
bool isLong() const;
bool isDouble() const;
bool isString() const;
bool isBooleanVector() const;
bool isByteVector() const;
bool isIntVector() const;
bool isLongVector() const;
bool isDoubleVector() const;
bool isStringVector() const;
bool isPersistableBundle() const;
bool isMap() const;
// String Convenience Adapters
// ---------------------------
explicit Value(const String8& value): Value(String16(value)) { }
explicit Value(const ::std::string& value): Value(String8(value.c_str())) { }
void putString(const String8& value) { return putString(String16(value)); }
void putString(const ::std::string& value) { return putString(String8(value.c_str())); }
Value& operator=(const String8& rhs) { return *this = String16(rhs); }
Value& operator=(const ::std::string& rhs) { return *this = String8(rhs.c_str()); }
bool getString(String8* out) const;
bool getString(::std::string* out) const;
private:
// This allows ::android::Parcel to call the two methods below.
friend class ::android::Parcel;
// This is called by ::android::Parcel::writeValue()
status_t writeToParcel(Parcel* parcel) const;
// This is called by ::android::Parcel::readValue()
status_t readFromParcel(const Parcel* parcel);
template<typename T> class Content;
class ContentBase;
ContentBase* mContent;
};
} // namespace binder
} // namespace android
#endif // ANDROID_VALUE_H
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