[WIP]

src/core/lombok/core/handlers/HandlerUtil.java

@@ -79,7 +79,7 @@ public static int primeForNull() {
 		return 43;
 	}
 
-	public static final List<String> NONNULL_ANNOTATIONS, BASE_COPYABLE_ANNOTATIONS, COPY_TO_SETTER_ANNOTATIONS, COPY_TO_BUILDER_SINGULAR_SETTER_ANNOTATIONS, JACKSON_COPY_TO_BUILDER_ANNOTATIONS;
+	public static final List<String> NONNULL_ANNOTATIONS, BASE_COPYABLE_ANNOTATIONS, COPY_TO_GETTER_ANNOTATIONS, COPY_TO_SETTER_ANNOTATIONS, COPY_TO_BUILDER_SINGULAR_SETTER_ANNOTATIONS, JACKSON_COPY_TO_BUILDER_ANNOTATIONS;
 	static {
 		// This is a list of annotations with a __highly specific meaning__: All annotations in this list indicate that passing null for the relevant item is __never__ acceptable, regardless of settings or circumstance.
 		// In other words, things like 'this models a database table, and the db table column has a nonnull constraint', or 'this represents a web form, and if this is null, the form is invalid' __do not count__ and should not be in this list;
@@ -423,6 +423,23 @@ public static int primeForNull() {
 			"org.checkerframework.common.value.qual.UnknownVal",
 			"org.checkerframework.framework.qual.PurityUnqualified",
 		}));
+		COPY_TO_GETTER_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
+			"com.fasterxml.jackson.annotation.JacksonInject",
+			"com.fasterxml.jackson.annotation.JsonAlias",
+			"com.fasterxml.jackson.annotation.JsonFormat",
+			"com.fasterxml.jackson.annotation.JsonIgnore",
+			"com.fasterxml.jackson.annotation.JsonIgnoreProperties",
+			"com.fasterxml.jackson.annotation.JsonProperty",
+			"com.fasterxml.jackson.annotation.JsonSetter",
+			"com.fasterxml.jackson.annotation.JsonSubTypes",
+			"com.fasterxml.jackson.annotation.JsonTypeInfo",
+			"com.fasterxml.jackson.annotation.JsonUnwrapped",
+			"com.fasterxml.jackson.annotation.JsonView",
+			"com.fasterxml.jackson.databind.annotation.JsonDeserialize",
+			"com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlElementWrapper",
+			"com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlProperty",
+			"com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlText",
+		}));
 		COPY_TO_SETTER_ANNOTATIONS = Collections.unmodifiableList(Arrays.asList(new String[] {
 			"com.fasterxml.jackson.annotation.JacksonInject",
 			"com.fasterxml.jackson.annotation.JsonAlias",

src/core/lombok/extern/jackson/Jacksonized.java

@@ -38,9 +38,10 @@
  * {@code @}{@link Builder}, {@code @}{@link SuperBuilder}, and
  * {@code @}{@link Accessors}.
  * <p>
- * For {@code @}{@link Accessors}{@code (fluent = true)}, it automatically
+ * For {@code @}{@link Accessors}{@code (fluent = true)} on a type, it automatically
  * configures Jackson to use the generated setters and getters for
  * (de-)serialization by inserting {@code @}{@link JsonProperty} annotations.
+ * (Note that {@code @Jacksonized} {@code @Accessors} on fields are not supported.) 
  * <p>
  * For {@code @}{@link Builder} and {@code @}{@link SuperBuilder}, it
  * automatically configures the generated builder class to be used by Jackson's

src/core/lombok/javac/handlers/HandleJacksonized.java

@@ -28,6 +28,7 @@
 import com.sun.tools.javac.tree.JCTree;
 import com.sun.tools.javac.tree.JCTree.JCAnnotation;
 import com.sun.tools.javac.tree.JCTree.JCClassDecl;
+import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
 import com.sun.tools.javac.tree.JCTree.JCExpression;
 import com.sun.tools.javac.tree.JCTree.JCFieldAccess;
 import com.sun.tools.javac.tree.JCTree.JCMethodDecl;
@@ -56,7 +57,7 @@
  * needs for builders.
  */
 @Provides
-@HandlerPriority(-512) // Above Handle(Super)Builder's level (builders must be already generated).
+@HandlerPriority(-512) // Above Handle(Super)Builder's level (builders must be already generated), but before all handlers generating getters/setters.
 public class HandleJacksonized extends JavacAnnotationHandler<Jacksonized> {
 
 	@Override public void handle(AnnotationValues<Jacksonized> annotation, JCAnnotation ast, JavacNode annotationNode) {
@@ -79,7 +80,49 @@ public class HandleJacksonized extends JavacAnnotationHandler<Jacksonized> {
 			annotationNode.addWarning("@Jacksonized requires @Builder, @SuperBuilder, or @Accessors for it to mean anything.");
 			return;
 		}
+
+		if (builderAnnotationNode != null || superBuilderAnnotationNode != null) {
+			handleJacksonizedBuilder(annotationNode, annotatedNode, tdNode, td, builderAnnotationNode, superBuilderAnnotationNode);
+		}
+
+		if (accessorsAnnotationNode != null) {
+			handleJacksonizedAccessors(annotationNode, annotatedNode, tdNode, td, accessorsAnnotationNode);
+		}
+ 	}
 
+	private void handleJacksonizedAccessors(JavacNode annotationNode, JavacNode annotatedNode, JavacNode tdNode, JCClassDecl td, JavacNode accessorsAnnotationNode) {
+		AnnotationValues<Accessors> accessorsAnnotation = accessorsAnnotationNode != null ? 
+			createAnnotation(Accessors.class, accessorsAnnotationNode) :
+				null;
+		boolean fluent = accessorsAnnotation != null && accessorsAnnotation.getInstance().fluent();
+
+		if (!fluent) {
+			// No changes required for chained-only accessors.
+			return;
+		}
+
+		// Add @JsonProperty to all fields. It will be automatically copied to the getter/setters later.
+		for (JavacNode javacNode : tdNode.down()) {
+			if (javacNode.getKind() == Kind.FIELD) {
+				createJsonPropertyForField(javacNode, annotationNode);
+			}
+		}
+	}
+
+	private void createJsonPropertyForField(JavacNode fieldNode, JavacNode annotationNode) {
+		if (hasAnnotation("com.fasterxml.jackson.annotation.JsonProperty", fieldNode)) {
+			return;
+		}
+		JavacTreeMaker maker = fieldNode.getTreeMaker();
+
+		JCExpression jsonPropertyType = chainDots(fieldNode, "com", "fasterxml", "jackson", "annotation", "JsonProperty");
+		JCAnnotation annotationJsonProperty = maker.Annotation(jsonPropertyType, List.of(maker.Literal(fieldNode.getName())));
+		recursiveSetGeneratedBy(annotationJsonProperty, annotationNode);
+		JCVariableDecl fieldDecl = ((JCVariableDecl)fieldNode.get());
+		fieldDecl.mods.annotations = fieldDecl.mods.annotations.append(annotationJsonProperty);
+	}
+
+	private void handleJacksonizedBuilder(JavacNode annotationNode, JavacNode annotatedNode, JavacNode tdNode, JCClassDecl td, JavacNode builderAnnotationNode, JavacNode superBuilderAnnotationNode) {
 		if (builderAnnotationNode != null && superBuilderAnnotationNode != null) {
 			annotationNode.addError("@Jacksonized cannot process both @Builder and @SuperBuilder on the same class.");
 			return;
@@ -155,7 +198,7 @@ public class HandleJacksonized extends JavacAnnotationHandler<Jacksonized> {
 		// @SuperBuilder? Make it package-private!
 		if (superBuilderAnnotationNode != null)
 			builderClass.mods.flags = builderClass.mods.flags & ~Flags.PRIVATE;
- 	}
+	}
 
 	private String getBuilderClassName(JavacNode annotationNode, JavacNode annotatedNode, JCClassDecl td, AnnotationValues<Builder> builderAnnotation, JavacTreeMaker maker) {
 		String builderClassName = builderAnnotation != null ? 

test/transform/resource/after-delombok/JacksonizedAccessors.java

@@ -0,0 +1,18 @@
+public class JacksonizedAccessors {
+	@com.fasterxml.jackson.annotation.JsonProperty("intValue")
+	private int intValue;
+	@java.lang.SuppressWarnings("all")
+	@com.fasterxml.jackson.annotation.JsonProperty("intValue")
+	public int intValue() {
+		return this.intValue;
+	}
+	/**
+	 * @return {@code this}.
+	 */
+	@java.lang.SuppressWarnings("all")
+	@com.fasterxml.jackson.annotation.JsonProperty("intValue")
+	public JacksonizedAccessors intValue(final int intValue) {
+		this.intValue = intValue;
+		return this;
+	}
+}

test/transform/resource/before/JacksonizedAccessors.java

@@ -0,0 +1,10 @@
+import lombok.Getter;
+import lombok.experimental.Accessors;
+import lombok.extern.jackson.Jacksonized;
+
+@Jacksonized
+@Accessors(fluent = true)
+@Getter
+public class JacksonizedAccessors {
+	private int intValue;
+}