/usr/include/proton/internal/data.hpp is in libqpid-proton-cpp8-dev 0.14.0-5.1ubuntu1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 | #ifndef PROTON_INTERNAL_DATA_HPP
#define PROTON_INTERNAL_DATA_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 "../internal/object.hpp"
#include "../types_fwd.hpp"
struct pn_data_t;
namespace proton {
class value;
namespace internal {
/// @cond INTERNAL
/// Wrapper for a proton data object.
class data : public object<pn_data_t> {
/// Wrap an existing proton-C data object.
data(pn_data_t* d) : internal::object<pn_data_t>(d) {}
public:
/// Create an empty data.
data() : internal::object<pn_data_t>(0) {}
/// Create a new data object.
PN_CPP_EXTERN static data create();
/// Copy the contents of another data object.
PN_CPP_EXTERN void copy(const data&);
/// Clear the data.
PN_CPP_EXTERN void clear();
/// Rewind current position to the start.
PN_CPP_EXTERN void rewind();
/// True if there are no values.
PN_CPP_EXTERN bool empty() const;
/// Append the contents of another data object.
PN_CPP_EXTERN int append(data src);
/// Append up to limit items from data object.
PN_CPP_EXTERN int appendn(data src, int limit);
PN_CPP_EXTERN bool next();
PN_CPP_EXTERN void* point() const;
PN_CPP_EXTERN void restore(void* h);
protected:
void narrow();
void widen();
friend class internal::factory<data>;
friend struct state_guard;
friend PN_CPP_EXTERN std::ostream& operator<<(std::ostream&, const data&);
};
/// @endcond
/// **Experimental** - Save and restore codec state
///
/// A state_guard saves the state and restores it in the destructor
/// unless cancel() is called.
struct state_guard {
/// @cond INTERNAL
data& data_;
void* point_;
bool cancel_;
/// @endcond
/// @cond INTERNAL
state_guard(data& d) : data_(d), point_(data_.point()), cancel_(false) {}
/// @endcond
~state_guard() { if (!cancel_) data_.restore(point_); }
/// Discard the saved state.
void cancel() { cancel_ = true; }
};
} // internal
} // proton
#endif // PROTON_INTERNAL_DATA_HPP
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