First steps Builder support

1 files changed, 71 insertions, 0 deletions

diff --git a/src/core/lombok/eclipse/handlers/HandleBuilder.java b/src/core/lombok/eclipse/handlers/HandleBuilder.java
new file mode 100644
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--- /dev/null
+++ b/src/core/lombok/eclipse/handlers/HandleBuilder.java
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+/*
+ * Copyright (C) 2013 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.eclipse.handlers;
+
+import static lombok.eclipse.handlers.EclipseHandlerUtil.*;
+
+import java.util.Collections;
+import java.util.List;
+
+import org.eclipse.jdt.internal.compiler.ast.Annotation;
+import org.eclipse.jdt.internal.compiler.ast.ConstructorDeclaration;
+import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
+import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;
+
+import lombok.AccessLevel;
+import lombok.core.AnnotationValues;
+import lombok.core.ImmutableList;
+import lombok.core.JavaIdentifiers;
+import lombok.eclipse.EclipseAnnotationHandler;
+import lombok.eclipse.EclipseNode;
+import lombok.experimental.Builder;
+
+public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
+	@Override public void handle(AnnotationValues<Builder> annotation, Annotation ast, EclipseNode annotationNode) {
+		String builderMethodName = annotation.getInstance().builderMethodName();
+		if (builderMethodName == null) builderMethodName = "builder";
+		if (builderMethodName.length() == 0) {
+			annotationNode.addError("builderMethodName cannot be the empty string.");
+			return;
+		}
+		
+		if (!JavaIdentifiers.isValidJavaIdentifier(builderMethodName)) {
+			annotationNode.addError("builderMethodName must be a valid java method name.");
+			return;
+		}
+		
+		EclipseNode parent = annotationNode.up();
+		
+		if (parent.get() instanceof ConstructorDeclaration) {
+			
+		}
+		
+		if (parent.get() instanceof MethodDeclaration) {
+			
+		}
+		
+		if (parent.get() instanceof TypeDeclaration) {
+			// TODO: How do we ensure this one will 'win' over the implicit constructors generated by @Data and @Value.
+			new HandleConstructor().generateAllArgsConstructor(parent, AccessLevel.PRIVATE, null, true, Collections.<Annotation>emptyList(), ast);
+		}
+	}
+}