[Upb C++] Implement RepeatedField

PiperOrigin-RevId: 538944010

Author: protobuf-github-bot

protos/BUILD

@@ -38,10 +38,35 @@ load(
 
 licenses(["notice"])
 
+cc_library(
+    name = "repeated_field",
+    hdrs = [
+        "repeated_field.h",
+        "repeated_field_iterator.h",
+    ],
+    copts = UPB_DEFAULT_CPPOPTS,
+    visibility = ["//visibility:public"],
+    deps = [
+        ":protos",
+        ":protos_traits",
+        "//:collections_internal",
+        "//:message_copy",
+        "//:mini_table",
+        "//:port",
+        "//:upb",
+        "@com_google_absl//absl/base:core_headers",
+        "@com_google_absl//absl/strings",
+    ],
+)
+
 cc_library(
     name = "protos",
-    srcs = ["protos.cc"],
-    hdrs = ["protos.h"],
+    srcs = [
+        "protos.cc",
+    ],
+    hdrs = [
+        "protos.h",
+    ],
     copts = UPB_DEFAULT_CPPOPTS,
     visibility = ["//visibility:public"],
     deps = [
@@ -50,10 +75,21 @@ cc_library(
         "//:upb",
         "@com_google_absl//absl/status",
         "@com_google_absl//absl/status:statusor",
+        "@com_google_absl//absl/strings",
         "@com_google_absl//absl/strings:str_format",
     ],
 )
 
+# Internally used type traits.
+cc_library(
+    name = "protos_traits",
+    hdrs = [
+        "protos_traits.h",
+    ],
+    copts = UPB_DEFAULT_CPPOPTS,
+    visibility = ["//visibility:private"],
+)
+
 cc_library(
     name = "protos_internal",
     hdrs = ["protos_internal.h"],
@@ -80,6 +116,7 @@ cc_library(
     deps = [
         ":protos",
         ":protos_internal",
+        ":repeated_field",
     ],
 )
 

protos/bazel/upb_cc_proto_library.bzl

@@ -286,6 +286,7 @@ _upb_cc_proto_library_aspect = aspect(
                 "@com_google_absl//absl/strings",
                 "@com_google_absl//absl/status:statusor",
                 "//protos",
+                "//protos:repeated_field",
             ],
         ),
     }),

protos/protos_traits.h

@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2009-2023, Google LLC
+ * All rights reserved.
+ *
+ * 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 LLC 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 Google LLC 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.
+ */
+
+#ifndef THIRD_PARTY_UPB_PROTOS_PROTOS_TRAITS_H_
+#define THIRD_PARTY_UPB_PROTOS_PROTOS_TRAITS_H_
+
+#include <type_traits>
+
+namespace protos::internal {
+
+template <typename T, typename T2>
+using add_const_if_T_is_const =
+    std::conditional_t<std::is_const_v<T>, const T2, T2>;
+
+}  // namespace protos::internal
+
+#endif  // THIRD_PARTY_UPB_PROTOS_PROTOS_TRAITS_H_