Defines the AutoCodec FieldGenerator for DeferredObjectCodec.

The new AutoCodec implementation will use this implementation.

PiperOrigin-RevId: 655359804
Change-Id: I9451eef6cb70d5bfeda77bd83f1d3bb092bc3e31

src/main/java/com/google/devtools/build/lib/skyframe/serialization/autocodec/BUILD

@@ -114,6 +114,8 @@ java_library(
     srcs = [
         "AutoCodecProcessor.java",
         "CodecGenerator.java",
+        "DeferredObjectCodecConstants.java",
+        "DeferredObjectCodecFieldGenerators.java",
         "FieldGenerator.java",
         "Initializers.java",
         "InterningObjectCodecFieldGenerators.java",
@@ -128,6 +130,7 @@ java_library(
         ":type-operations",
         "//src/main/java/com/google/devtools/build/lib/skyframe/serialization",
         "//src/main/java/com/google/devtools/build/lib/unsafe:unsafe-provider",
+        "//src/main/java/com/google/devtools/build/lib/util:string",
         "//third_party:auto_service",
         "//third_party:auto_value",
         "//third_party:guava",

src/main/java/com/google/devtools/build/lib/skyframe/serialization/autocodec/DeferredObjectCodecConstants.java

@@ -0,0 +1,46 @@
+// Copyright 2024 The Bazel Authors. All rights reserved.
+//
+// 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
+//
+//    http://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.
+package com.google.devtools.build.lib.skyframe.serialization.autocodec;
+
+import static com.google.devtools.build.lib.util.StringUtilities.capitalize;
+
+import com.google.devtools.build.lib.skyframe.serialization.DeferredObjectCodec;
+import java.lang.invoke.MethodHandles;
+import javax.lang.model.element.Name;
+import javax.lang.model.element.VariableElement;
+import javax.lang.model.type.TypeKind;
+
+/** Common {@link DeferredObjectCodec} building constants and helper methods. */
+final class DeferredObjectCodecConstants {
+  /** Name of constructor scoped variable holding the {@link MethodHandles.Lookup} instance. */
+  static final String CONSTRUCTOR_LOOKUP_NAME = "lookup";
+
+  /** Class name for the codec's {@link DeferredObjectCodec.DeferredValue} implementation. */
+  static final String BUILDER_TYPE_NAME = "Builder";
+
+  /** Name of an instance variable in the deserialize method storing the builder instance. */
+  static final String BUILDER_NAME = "builder";
+
+  static String makeGetterName(VariableElement parameter) {
+    String prefix = parameter.asType().getKind() == TypeKind.BOOLEAN ? "is" : "get";
+    String suffix = capitalize(parameter.getSimpleName().toString());
+    return prefix + suffix;
+  }
+
+  static String makeSetterName(Name name) {
+    return "set" + capitalize(name.toString());
+  }
+
+  private DeferredObjectCodecConstants() {}
+}