diff --git a/src/google/protobuf/BUILD.bazel b/src/google/protobuf/BUILD.bazel index 34ee53bcd9..5744cc9ece 100644 --- a/src/google/protobuf/BUILD.bazel +++ b/src/google/protobuf/BUILD.bazel @@ -480,6 +480,17 @@ cc_library( ]), ) +cc_library( + name = "descriptor_legacy", + hdrs = ["descriptor_legacy.h"], + deps = [ + ":protobuf_nowkt", + ":port_def", + "@com_google_absl//absl/strings", + ], + visibility = ["//:__subpackages__"] +) + filegroup( name = "well_known_type_protos", srcs = [ diff --git a/src/google/protobuf/descriptor_legacy.h b/src/google/protobuf/descriptor_legacy.h new file mode 100644 index 0000000000..6e38f7f984 --- /dev/null +++ b/src/google/protobuf/descriptor_legacy.h @@ -0,0 +1,92 @@ +// Protocol Buffers - Google's data interchange format +// Copyright 2008 Google Inc. All rights reserved. +// https://developers.google.com/protocol-buffers/ +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are +// met: +// +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above +// copyright notice, this list of conditions and the following disclaimer +// in the documentation and/or other materials provided with the +// distribution. +// * Neither the name of Google Inc. nor the names of its +// contributors may be used to endorse or promote products derived from +// this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + +// Author: kenton@google.com (Kenton Varda) +// Based on original Protocol Buffers design by +// Sanjay Ghemawat, Jeff Dean, and others. +// +// This file contains classes which describe a type of protocol message. +// You can use a message's descriptor to learn at runtime what fields +// it contains and what the types of those fields are. The Message +// interface also allows you to dynamically access and modify individual +// fields by passing the FieldDescriptor of the field you are interested +// in. +// +// Most users will not care about descriptors, because they will write +// code specific to certain protocol types and will simply use the classes +// generated by the protocol compiler directly. Advanced users who want +// to operate on arbitrary types (not known at compile time) may want to +// read descriptors in order to learn about the contents of a message. +// A very small number of users will want to construct their own +// Descriptors, either because they are implementing Message manually or +// because they are writing something like the protocol compiler. +// +// For an example of how you might use descriptors, see the code example +// at the top of message.h. + +#ifndef GOOGLE_PROTOBUF_DESCRIPTOR_LEGACY_H__ +#define GOOGLE_PROTOBUF_DESCRIPTOR_LEGACY_H__ + +#include "absl/strings/string_view.h" +#include "google/protobuf/descriptor.h" + +// Must be included last. +#include "google/protobuf/port_def.inc" + +// This file is meant to be a temporary housing for legacy descriptor APIs we +// want to deprecate and remove. This will help prevent backslide by allowing +// us to control visibility. + +namespace google { +namespace protobuf { + +// Wraps FileDescriptor. +class PROTOBUF_EXPORT FileDescriptorLegacy { + public: + explicit FileDescriptorLegacy(const FileDescriptor* desc) : desc_(desc) {} + + // Any dependencies on file-level syntax keyword should be replaced by + // feature-level switches to support go/protobuf-editions. + using Syntax = FileDescriptor::Syntax; + Syntax syntax() const { return desc_->syntax(); } + static absl::string_view SyntaxName(Syntax syntax) { + return FileDescriptor::SyntaxName(syntax); + } + + private: + const FileDescriptor* desc_; +}; + +} // namespace protobuf +} // namespace google + +#include "google/protobuf/port_undef.inc" + +#endif // GOOGLE_PROTOBUF_DESCRIPTOR_LEGACY_H__