123 lines
4.8 KiB
C++
123 lines
4.8 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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// Author: kenton@google.com (Kenton Varda)
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// Based on original Protocol Buffers design by
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// Sanjay Ghemawat, Jeff Dean, and others.
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//
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// This file contains classes which describe a type of protocol message.
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// You can use a message's descriptor to learn at runtime what fields
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// it contains and what the types of those fields are. The Message
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// interface also allows you to dynamically access and modify individual
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// fields by passing the FieldDescriptor of the field you are interested
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// in.
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//
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// Most users will not care about descriptors, because they will write
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// code specific to certain protocol types and will simply use the classes
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// generated by the protocol compiler directly. Advanced users who want
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// to operate on arbitrary types (not known at compile time) may want to
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// read descriptors in order to learn about the contents of a message.
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// A very small number of users will want to construct their own
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// Descriptors, either because they are implementing Message manually or
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// because they are writing something like the protocol compiler.
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//
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// For an example of how you might use descriptors, see the code example
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// at the top of message.h.
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#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_LEGACY_H__
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#define GOOGLE_PROTOBUF_DESCRIPTOR_LEGACY_H__
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#include "absl/strings/string_view.h"
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#include "google/protobuf/descriptor.h"
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// Must be included last.
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#include "google/protobuf/port_def.inc"
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// This file is meant to be a temporary housing for legacy descriptor APIs we
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// want to deprecate and remove. This will help prevent backslide by allowing
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// us to control visibility.
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namespace google {
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namespace protobuf {
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PROTOBUF_IGNORE_DEPRECATION_START
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// Wraps FileDescriptor.
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class PROTOBUF_EXPORT FileDescriptorLegacy {
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public:
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explicit FileDescriptorLegacy(const FileDescriptor* desc) : desc_(desc) {}
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// Any dependencies on file-level syntax keyword should be replaced by
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// feature-level switches to support go/protobuf-editions.
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enum Syntax {
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SYNTAX_UNKNOWN = FileDescriptor::SYNTAX_UNKNOWN,
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SYNTAX_PROTO2 = FileDescriptor::SYNTAX_PROTO2,
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SYNTAX_PROTO3 = FileDescriptor::SYNTAX_PROTO3,
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#ifdef PROTOBUF_FUTURE_EDITIONS
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SYNTAX_EDITIONS = FileDescriptor::SYNTAX_EDITIONS,
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#endif // PROTOBUF_FUTURE_EDITIONS
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};
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Syntax syntax() const { return static_cast<Syntax>(desc_->syntax()); }
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static absl::string_view SyntaxName(Syntax syntax) {
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return FileDescriptor::SyntaxName(
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static_cast<FileDescriptor::Syntax>(syntax));
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}
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private:
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const FileDescriptor* desc_;
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};
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class PROTOBUF_EXPORT FieldDescriptorLegacy {
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public:
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explicit FieldDescriptorLegacy(const FieldDescriptor* desc) : desc_(desc) {}
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bool has_optional_keyword() const { return desc_->has_optional_keyword(); }
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private:
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const FieldDescriptor* desc_;
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};
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class PROTOBUF_EXPORT OneofDescriptorLegacy {
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public:
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explicit OneofDescriptorLegacy(const OneofDescriptor* desc) : desc_(desc) {}
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bool is_synthetic() const { return desc_->is_synthetic(); }
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private:
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const OneofDescriptor* desc_;
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};
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PROTOBUF_IGNORE_DEPRECATION_STOP
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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_DESCRIPTOR_LEGACY_H__
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