86 lines
3.2 KiB
C++
86 lines
3.2 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2008 Google Inc. All rights reserved.
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// https://developers.google.com/protocol-buffers/
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef GOOGLE_PROTOBUF_UTIL_INTERNAL_OBJECT_SOURCE_H__
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#define GOOGLE_PROTOBUF_UTIL_INTERNAL_OBJECT_SOURCE_H__
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#include <google/protobuf/stubs/common.h>
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#include <google/protobuf/stubs/status.h>
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#include <google/protobuf/stubs/strutil.h>
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#include <google/protobuf/stubs/status.h>
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// Must be included last.
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#include <google/protobuf/port_def.inc>
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namespace google {
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namespace protobuf {
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namespace util {
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namespace converter {
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class ObjectWriter;
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// An ObjectSource is anything that can write to an ObjectWriter.
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// Implementation of this interface typically provide constructors or
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// factory methods to create an instance based on some source data, for
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// example, a character stream, or protobuf.
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//
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// Derived classes could be thread-unsafe.
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class PROTOBUF_EXPORT ObjectSource {
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public:
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virtual ~ObjectSource() {}
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// Writes to the ObjectWriter
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virtual util::Status WriteTo(ObjectWriter* ow) const {
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return NamedWriteTo("", ow);
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}
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// Writes to the ObjectWriter with a custom name for the message.
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// This is useful when you chain ObjectSource together by embedding one
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// within another.
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virtual util::Status NamedWriteTo(StringPiece name,
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ObjectWriter* ow) const = 0;
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protected:
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ObjectSource() {}
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private:
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// Do not add any data members to this class.
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GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(ObjectSource);
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};
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} // namespace converter
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} // namespace util
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} // namespace protobuf
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} // namespace google
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#include <google/protobuf/port_undef.inc>
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#endif // GOOGLE_PROTOBUF_UTIL_INTERNAL_OBJECT_SOURCE_H__
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