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#ifndef QPID_MSG_H
#define QPID_MSG_H
/*
*
* 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 <sstream>
#include <iostream>
namespace qpid {
/** A simple wrapper for std::ostringstream that allows
* in place construction of a message and automatic conversion
* to string.
* E.g.
*@code
* void foo(const std::string&);
* foo(Msg() << "hello " << 32);
*@endcode
* Will construct the string "hello 32" and pass it to foo()
*/
struct Msg {
std::ostringstream os;
Msg() {}
Msg(const Msg& m) : os(m.str()) {}
std::string str() const { return os.str(); }
operator std::string() const { return str(); }
};
template <class T> const Msg& operator<<(const Msg& m, const T& t) {
const_cast<std::ostringstream&>(m.os)<<t; return m;
}
inline std::ostream& operator<<(std::ostream& o, const Msg& m) {
return o<<m.str();
}
/** Construct a message using operator << and append (file:line) */
#define QPID_MSG(message) ::qpid::Msg() << message << " (" << __FILE__ << ":" << __LINE__ << ")"
} // namespace qpid
#endif /*!QPID_MSG_H*/
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