map.hpp

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#ifndef PROTON_MAP_HPP
#define PROTON_MAP_HPP
 
/*
 *
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you 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.
 *
 */
 
#include "./value.hpp"
#include "./internal/pn_unique_ptr.hpp"
 
#include <cstddef>
 
 
namespace proton {
 
namespace codec {
class decoder;
class encoder;
}
 
template <class K, class T>
class map_type_impl;
 
template <class K, class T>
class map;
 
template <class K, class T>
PN_CPP_EXTERN proton::codec::decoder& operator>>(proton::codec::decoder& d, map<K,T>& m);
template <class K, class T>
PN_CPP_EXTERN proton::codec::encoder& operator<<(proton::codec::encoder& e, const map<K,T>& m);
template <class K, class T>
PN_CPP_EXTERN void swap(map<K,T>&, map<K,T>&);
 
template <class K, class T>
class PN_CPP_CLASS_EXTERN map {
    template <class M, class U=void>
        struct assignable_map :
            public internal::enable_if<codec::is_encodable_map<M,K,T>::value, U> {};
 
 public:
    PN_CPP_EXTERN map();
 
    PN_CPP_EXTERN map(const map&);
 
    PN_CPP_EXTERN map& operator=(const map&);
 
#if PN_CPP_HAS_RVALUE_REFERENCES
    PN_CPP_EXTERN map(map&&);
 
    PN_CPP_EXTERN map& operator=(map&&);
#endif
    PN_CPP_EXTERN ~map();
 
    template <class M>
    typename assignable_map<M, map&>::type operator=(const M& x) { value(x); return *this; }
 
    PN_CPP_EXTERN void value(const value& x);
 
    PN_CPP_EXTERN proton::value& value();
 
    PN_CPP_EXTERN const proton::value& value() const;
 
    PN_CPP_EXTERN T get(const K& k) const;
 
    PN_CPP_EXTERN void put(const K& k, const T& v);
 
    PN_CPP_EXTERN size_t erase(const K& k);
 
    PN_CPP_EXTERN bool exists(const K& k) const;
 
    PN_CPP_EXTERN size_t size() const;
 
    PN_CPP_EXTERN void clear();
 
    PN_CPP_EXTERN bool empty() const;
 
    explicit map(pn_data_t*);
    void reset(pn_data_t*);
 
  private:
    typedef map_type_impl<K,T> map_type;
    mutable internal::pn_unique_ptr<map_type> map_;
    mutable proton::value value_;
 
    map_type& cache() const;
    proton::value& flush() const;
 
  friend PN_CPP_EXTERN proton::codec::decoder& operator>> <>(proton::codec::decoder&, map&);
  friend PN_CPP_EXTERN proton::codec::encoder& operator<< <>(proton::codec::encoder&, const map&);
  friend PN_CPP_EXTERN void swap<>(map&, map&);
};
 
} // proton
 
#endif // PROTON_MAP_HPP