Add support for option retention in PHP

PiperOrigin-RevId: 528842376

src/google/protobuf/compiler/php/BUILD.bazel

@@ -8,8 +8,8 @@ load("//build_defs:cpp_opts.bzl", "COPTS")
 
 cc_library(
     name = "names",
-    hdrs = ["names.h"],
     srcs = ["names.cc"],
+    hdrs = ["names.h"],
     copts = COPTS,
     include_prefix = "google/protobuf/compiler/php",
     visibility = ["//visibility:public"],
@@ -35,6 +35,7 @@ cc_library(
         "//src/google/protobuf:descriptor_legacy",
         "//src/google/protobuf:protobuf_nowkt",
         "//src/google/protobuf/compiler:code_generator",
+        "//src/google/protobuf/compiler:retention",
         "@com_google_absl//absl/strings",
     ],
 )
@@ -52,9 +53,12 @@ pkg_files(
 
 filegroup(
     name = "test_srcs",
-    srcs = glob([
+    srcs = glob(
+        [
             "*_test.cc",
             "*unittest.cc",
-    ], allow_empty = True),
+        ],
+        allow_empty = True,
+    ),
     visibility = ["//src/google/protobuf/compiler:__pkg__"],
 )

src/google/protobuf/compiler/php/php_generator.cc

@@ -45,6 +45,7 @@
 #include "absl/strings/str_replace.h"
 #include "absl/strings/str_split.h"
 #include "absl/strings/string_view.h"
+#include "google/protobuf/compiler/retention.h"
 #include "google/protobuf/descriptor.h"
 #include "google/protobuf/descriptor.pb.h"
 #include "google/protobuf/descriptor_legacy.h"
@@ -943,7 +944,7 @@ void GenerateAddFileToPool(const FileDescriptor* file, const Options& options,
       // Add messages and enums to descriptor pool.
       FileDescriptorSet files;
       FileDescriptorProto* file_proto = files.add_file();
-      file->CopyTo(file_proto);
+      *file_proto = StripSourceRetentionOptions(*file);
 
       // Filter out descriptor.proto as it cannot be depended on for now.
       RepeatedPtrField<std::string>* dependency =
@@ -1086,7 +1087,7 @@ void GenerateAddFilesToPool(const FileDescriptor* file, const Options& options,
 
     if (needs_aggregate) {
       auto file_proto = sorted_file_set.add_file();
-      file_node->CopyTo(file_proto);
+      *file_proto = StripSourceRetentionOptions(*file_node);
 
       // Filter out descriptor.proto as it cannot be depended on for now.
       RepeatedPtrField<std::string>* dependency =
@@ -2192,8 +2193,7 @@ void GenerateCWellKnownTypes(const std::vector<const FileDescriptor*>& files,
         absl::StrReplaceAll(metadata_classname, {{"\\", "_"}});
     metadata_classname =
         absl::StrReplaceAll(metadata_classname, {{"\\", "\\\\"}});
-    FileDescriptorProto file_proto;
-    file->CopyTo(&file_proto);
+    FileDescriptorProto file_proto = StripSourceRetentionOptions(*file);
     std::string serialized;
     file_proto.SerializeToString(&serialized);
     printer.Print(