1 files changed, 42 insertions, 0 deletions
diff --git a/src/core/lombok/Builder.java b/src/core/lombok/Builder.java
index a16717cc..7ae43bfa 100644
--- a/src/core/lombok/Builder.java
+++ b/src/core/lombok/Builder.java
@@ -132,6 +132,48 @@ public @interface Builder {
 	String builderClassName() default "";
 	
 	/**
+	 * Should the generated builder extend the parent class's builder?
+	 * 
+	 * If {@code true}, the generated builder class will extend the builder of the
+	 * superclass. This means the builder also contains the methods for fields from
+	 * the superclass.
+	 * <p>
+	 * Note that both this builder and the superclass' builder must be a builder
+	 * for a type (so, not for a static method or a constructor). You must mark
+	 * the parent extendable: {@code @Builder(extensible = true)}.
+	 * <p>
+	 * This builder will also be {@code extensible = true} if you set {@code inherit = true}.
+	 * 
+	 * @see #extensible()
+	 */
+	boolean inherit() default false;
+	
+	/**
+	 * Should the generated builder be extensible by subclasses?
+	 * 
+	 * If {@code true} the generated builder class will be extensible by
+	 * {@code @Builder} classes of this class's subclasses, by marking them
+	 * with {@code @Builder(inherit = true)}.
+	 * <p>
+	 * The {@code @Builder} extensible system only works for {@code @Builder}
+	 * annotations on types (so, not on a static method or a constructor).
+	 * 
+	 * @see #inherit()
+	 */
+	boolean extensible() default false;
+	
+	/**
+	 * Name of the builder class in the superclass.
+	 * 
+	 * Only relevant if {@code inherit = true}
+	 * 
+	 * Default: {@code (SuperclassTypeName)Builder}.
+	 * 
+	 * @see #inherit()
+	 */
+	String superclassBuilderClassName() default "";
+	
+	/**
 	 * If true, generate an instance method to obtain a builder that is initialized with the values of this instance.
 	 * Legal only if {@code @Builder} is used on a constructor, on the type itself, or on a static method that returns
 	 * an instance of the declaring type.