[configuration] added a service-loader based way to load ConfigurationKeys, so that third party additions can add their own.

src/core/lombok/ConfigurationKeys.java

@@ -30,13 +30,6 @@ import lombok.core.configuration.ConfigurationKey;
 public class ConfigurationKeys {
 	private ConfigurationKeys() {}
 	
-	/**
-	 * Makes sure all {@link ConfigurationKey}s in this class are loaded.
-	 * 
-	 * (Calling the method ensures this class is initialized by the class loader; this is enough to initialize all configuration keys).
-	 */
-	public static void ensureKeysLoaded() {}
-	
 	// ##### main package features #####
 	
 	// ----- *ArgsConstructor -----

src/core/lombok/core/configuration/ConfigurationApp.java

@@ -26,7 +26,6 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
-import lombok.ConfigurationKeys;
 import lombok.core.LombokApp;
 
 import org.mangosdk.spi.ProviderFor;
@@ -89,7 +88,7 @@ public class ConfigurationApp extends LombokApp {
 			return 1;
 		}
 		
-		ConfigurationKeys.ensureKeysLoaded();
+		ConfigurationKeysLoader.LoaderLoader.loadAllConfigurationKeys();
 		
 		if (args.generate) {
 			printConfiguration(System.out, args.verbose);

src/core/lombok/core/configuration/ConfigurationKeysLoader.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2014 The Project Lombok Authors.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+package lombok.core.configuration;
+
+import java.io.IOException;
+import java.util.Iterator;
+
+import lombok.ConfigurationKeys;
+import lombok.core.SpiLoadUtil;
+
+public interface ConfigurationKeysLoader {
+	public class LoaderLoader {
+		private LoaderLoader() {}
+		
+		public static void loadAllConfigurationKeys() {
+			try {
+				Class.forName(ConfigurationKeys.class.getName());
+			} catch (Throwable ignore) {}
+			try {
+				Iterator<ConfigurationKeysLoader> iterator = SpiLoadUtil.findServices(ConfigurationKeysLoader.class, ConfigurationKeysLoader.class.getClassLoader()).iterator();
+				while (iterator.hasNext()) {
+					try {
+						iterator.next();
+					} catch (Exception ignore) {}
+				}
+			} catch (IOException e) {
+				throw new RuntimeException("Can't load config keys; services file issue.", e);
+			}
+		}
+	}
+}

src/core/lombok/eclipse/HandlerLibrary.java

@@ -35,10 +35,10 @@ import java.util.SortedSet;
 import java.util.TreeSet;
 import java.util.WeakHashMap;
 
-import lombok.ConfigurationKeys;
 import lombok.Lombok;
 import lombok.core.AnnotationValues;
 import lombok.core.AnnotationValues.AnnotationValueDecodeFail;
+import lombok.core.configuration.ConfigurationKeysLoader;
 import lombok.core.HandlerPriority;
 import lombok.core.SpiLoadUtil;
 import lombok.core.TypeLibrary;
@@ -55,15 +55,13 @@ import org.eclipse.jdt.internal.compiler.ast.TypeReference;
  * building an AnnotationValues instance.
  */
 public class HandlerLibrary {
-	static {
-		ConfigurationKeys.ensureKeysLoaded();
-	}
-	
 	/**
 	 * Creates a new HandlerLibrary. Errors will be reported to the Eclipse Error log.
 	 * You probably want to use {@link #load()} instead.
 	 */
-	public HandlerLibrary() {}
+	public HandlerLibrary() {
+		ConfigurationKeysLoader.LoaderLoader.loadAllConfigurationKeys();
+	}
 	
 	private TypeLibrary typeLibrary = new TypeLibrary();
 	

src/core/lombok/javac/HandlerLibrary.java

@@ -35,12 +35,12 @@ import java.util.WeakHashMap;
 import javax.annotation.processing.Messager;
 import javax.tools.Diagnostic;
 
-import lombok.ConfigurationKeys;
 import lombok.core.HandlerPriority;
 import lombok.core.SpiLoadUtil;
 import lombok.core.TypeLibrary;
 import lombok.core.TypeResolver;
 import lombok.core.AnnotationValues.AnnotationValueDecodeFail;
+import lombok.core.configuration.ConfigurationKeysLoader;
 import lombok.javac.handlers.JavacHandlerUtil;
 
 import com.sun.tools.javac.tree.JCTree;
@@ -54,10 +54,6 @@ import com.sun.tools.javac.tree.JCTree.JCCompilationUnit;
  * building an AnnotationValues instance.
  */
 public class HandlerLibrary {
-	static {
-		ConfigurationKeys.ensureKeysLoaded();
-	}
-	
 	private final TypeLibrary typeLibrary = new TypeLibrary();
 	private final Map<String, AnnotationHandlerContainer<?>> annotationHandlers = new HashMap<String, AnnotationHandlerContainer<?>>();
 	private final Collection<VisitorContainer> visitorHandlers = new ArrayList<VisitorContainer>();
@@ -68,6 +64,7 @@ public class HandlerLibrary {
 	 * You probably want to use {@link #load(Messager)} instead.
 	 */
 	public HandlerLibrary(Messager messager) {
+		ConfigurationKeysLoader.LoaderLoader.loadAllConfigurationKeys();
 		this.messager = messager;
 	}