protoc-c: Use FileDescriptorLegacy to obtain proto syntax version on protobuf >= 23.0

Use the newer "legacy" way of determining whether a file descriptor is
using proto2 or proto3 syntax on protobuf >= 23.0.

Based on
66574f3fd8
but continues to support older versions of protobuf.

Unfortunately, since this is a "deprecated", "legacy" API it'll probably
disappear in about five seconds.
This commit is contained in:
Robert Edmonds 2023-07-02 22:57:57 -04:00
parent 23d2246e0f
commit 1937ba946b
2 changed files with 12 additions and 0 deletions

View File

@ -119,7 +119,11 @@ void FileGenerator::GenerateHeader(io::Printer* printer) {
int min_header_version = 1000000;
#if defined(HAVE_PROTO3)
# if GOOGLE_PROTOBUF_VERSION >= 4023000
if (FileDescriptorLegacy(file_).syntax() == FileDescriptorLegacy::SYNTAX_PROTO3) {
# else
if (file_->syntax() == FileDescriptor::SYNTAX_PROTO3) {
#endif
min_header_version = 1003000;
}
#endif

View File

@ -70,6 +70,10 @@
#include <protobuf-c/protobuf-c.pb.h>
#include <google/protobuf/io/printer.h>
#if GOOGLE_PROTOBUF_VERSION >= 4023000
# include <google/protobuf/descriptor_legacy.h>
#endif
namespace google {
namespace protobuf {
namespace compiler {
@ -172,7 +176,11 @@ int compare_name_indices_by_name(const void*, const void*);
// This wrapper is needed to be able to compile against protobuf2.
inline int FieldSyntax(const FieldDescriptor* field) {
#ifdef HAVE_PROTO3
# if GOOGLE_PROTOBUF_VERSION >= 4023000
return FileDescriptorLegacy(field->file()).syntax() == FileDescriptorLegacy::SYNTAX_PROTO3 ? 3 : 2;
# else
return field->file()->syntax() == FileDescriptor::SYNTAX_PROTO3 ? 3 : 2;
# endif
#else
return 2;
#endif