95 lines
2.9 KiB
C++
95 lines
2.9 KiB
C++
// Protocol Buffers - Google's data interchange format
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// Copyright 2023 Google LLC. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "protos_generator/gen_extensions.h"
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#include "absl/strings/str_cat.h"
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#include "protos_generator/gen_utils.h"
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#include "protos_generator/names.h"
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namespace protos_generator {
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namespace protobuf = ::google::protobuf;
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std::string ExtensionIdentifierBase(const protobuf::FieldDescriptor* ext) {
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assert(ext->is_extension());
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std::string ext_scope;
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if (ext->extension_scope()) {
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return MessageName(ext->extension_scope());
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} else {
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return ToCIdent(ext->file()->package());
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}
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}
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std::string ContainingTypeName(const protobuf::FieldDescriptor* ext) {
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return ext->containing_type()->file() != ext->file()
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? QualifiedClassName(ext->containing_type())
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: ClassName(ext->containing_type());
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}
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void WriteExtensionIdentifierHeader(const protobuf::FieldDescriptor* ext,
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Output& output) {
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std::string mini_table_name =
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absl::StrCat(ExtensionIdentifierBase(ext), "_", ext->name(), "_ext");
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if (ext->extension_scope()) {
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output(
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R"cc(
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static const ::protos::internal::ExtensionIdentifier<$0, $1> $2;
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)cc",
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ContainingTypeName(ext), CppTypeParameterName(ext), ext->name());
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} else {
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output(
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R"cc(
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extern const ::protos::internal::ExtensionIdentifier<$0, $1> $2;
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)cc",
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ContainingTypeName(ext), CppTypeParameterName(ext), ext->name());
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}
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}
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void WriteExtensionIdentifiersHeader(
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const std::vector<const protobuf::FieldDescriptor*>& extensions,
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Output& output) {
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for (const auto* ext : extensions) {
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if (!ext->extension_scope()) {
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WriteExtensionIdentifierHeader(ext, output);
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}
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}
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}
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void WriteExtensionIdentifier(const protobuf::FieldDescriptor* ext,
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Output& output) {
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std::string mini_table_name =
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absl::StrCat(ExtensionIdentifierBase(ext), "_", ext->name(), "_ext");
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if (ext->extension_scope()) {
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output(
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R"cc(
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const ::protos::internal::ExtensionIdentifier<$0, $3> $4::$2(&$1);
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)cc",
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ContainingTypeName(ext), mini_table_name, ext->name(),
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CppTypeParameterName(ext), ClassName(ext->extension_scope()));
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} else {
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output(
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R"cc(
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const ::protos::internal::ExtensionIdentifier<$0, $3> $2(&$1);
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)cc",
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ContainingTypeName(ext), mini_table_name, ext->name(),
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CppTypeParameterName(ext));
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}
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}
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void WriteExtensionIdentifiers(
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const std::vector<const protobuf::FieldDescriptor*>& extensions,
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Output& output) {
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for (const auto* ext : extensions) {
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if (!ext->extension_scope()) {
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WriteExtensionIdentifier(ext, output);
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}
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}
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}
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} // namespace protos_generator
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