[configuration] initial batch of configuration keys, primarily for flag usages.

1 files changed, 10 insertions, 0 deletions

diff --git a/src/core/lombok/Data.java b/src/core/lombok/Data.java
index bbc8d920..46703461 100644
--- a/src/core/lombok/Data.java
+++ b/src/core/lombok/Data.java
@@ -26,6 +26,9 @@ import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.annotation.Target;
 
+import lombok.core.FlagUsageType;
+import lombok.core.configuration.ConfigurationKey;
+
 /**
  * Generates getters for all fields, a useful toString method, and hashCode and equals implementations that check
  * all non-transient fields. Will also generate setters for all non-final fields, as well as a constructor.
@@ -45,6 +48,13 @@ import java.lang.annotation.Target;
 @Retention(RetentionPolicy.SOURCE)
 public @interface Data {
 	/**
+	 * lombok configuration: {@code lombok.Data.flagUsage} = {@code WARNING} | {@code ERROR}.
+	 * 
+	 * If set, <em>any</em> usage of {@code @Data} results in a warning / error.
+	 */
+	ConfigurationKey<FlagUsageType> FLAG_USAGE = new ConfigurationKey<FlagUsageType>("lombok.Data.flagUsage") {};
+	
+	/**
 	 * If you specify a static constructor name, then the generated constructor will be private, and
 	 * instead a static factory method is created that other classes can use to create instances.
 	 * We suggest the name: "of", like so: