Add utilities for creating google.protobuf.Any.type_url

PiperOrigin-RevId: 549468310

common/BUILD

@@ -40,6 +40,15 @@ cc_library(
     ],
 )
 
+cc_test(
+    name = "any_test",
+    srcs = ["any_test.cc"],
+    deps = [
+        ":any",
+        "//internal:testing",
+    ],
+)
+
 cc_library(
     name = "json",
     srcs = ["json.cc"],

common/any.h

@@ -19,7 +19,9 @@
 #include <utility>
 
 #include "absl/strings/cord.h"
+#include "absl/strings/str_cat.h"
 #include "absl/strings/string_view.h"
+#include "absl/strings/strip.h"
 
 namespace cel {
 
@@ -51,6 +53,18 @@ inline Any MakeAny(std::string type_url, const std::string& value) {
   return MakeAny(std::move(type_url), absl::Cord(value));
 }
 
+inline constexpr absl::string_view kTypeGoogleApisComPrefix =
+    "type.googleapis.com/";
+
+inline std::string MakeTypeUrlWithPrefix(absl::string_view prefix,
+                                         absl::string_view type_name) {
+  return absl::StrCat(absl::StripSuffix(prefix, "/"), "/", type_name);
+}
+
+inline std::string MakeTypeUrl(absl::string_view type_name) {
+  return MakeTypeUrlWithPrefix(kTypeGoogleApisComPrefix, type_name);
+}
+
 }  // namespace cel
 
 #endif  // THIRD_PARTY_CEL_CPP_COMMON_ANY_H_

common/any_test.cc

@@ -0,0 +1,32 @@
+// Copyright 2023 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "common/any.h"
+
+#include "internal/testing.h"
+
+namespace cel {
+namespace {
+
+TEST(MakeTypeUrlWithPrefix, Basic) {
+  EXPECT_EQ(MakeTypeUrlWithPrefix("foo", "bar.Baz"), "foo/bar.Baz");
+  EXPECT_EQ(MakeTypeUrlWithPrefix("foo/", "bar.Baz"), "foo/bar.Baz");
+}
+
+TEST(MakeTypeUrl, Basic) {
+  EXPECT_EQ(MakeTypeUrl("bar.Baz"), "type.googleapis.com/bar.Baz");
+}
+
+}  // namespace
+}  // namespace cel