Merge branch 'pr-builder-on-instance-methods' of https://github.com/enriquedacostacambio/lombok into enriquedacostacambio-pr-builder-on-instance-methods

Conflicts:
	AUTHORS
	src/core/lombok/Builder.java
	src/core/lombok/eclipse/handlers/HandleBuilder.java
	src/core/lombok/javac/handlers/HandleBuilder.java

9 files changed, 206 insertions, 61 deletions

diff --git a/AUTHORS b/AUTHORS
index 0aaf9290..23638679 100644
--- a/AUTHORS
+++ b/AUTHORS
@@ -3,6 +3,7 @@ Lombok contributors in alphabetical order:
 Christian Sterzl <christian.sterzl@gmail.com>
 DaveLaw <project.lombok@apconsult.de>
 Dawid Rusin <dawidrusin90@gmail.com>
+Enrique da Costa Cambio <enrique.dacostacambio@gmail.com>
 Jappe van der Hel <jappe.vanderhel@gmail.com>
 Luan Nico <luannico27@gmail.com>
 Maarten Mulders <mthmulders@users.noreply.github.com>
diff --git a/src/core/lombok/Builder.java b/src/core/lombok/Builder.java
index 0639c4cb..6a92028c 100644
--- a/src/core/lombok/Builder.java
+++ b/src/core/lombok/Builder.java
@@ -31,21 +31,21 @@ import java.lang.annotation.Target;
  * The builder annotation creates a so-called 'builder' aspect to the class that is annotated or the class
  * that contains a member which is annotated with {@code @Builder}.
  * <p>
- * If a member is annotated, it must be either a constructor or a static method. If a class is annotated,
+ * If a member is annotated, it must be either a constructor or a method. If a class is annotated,
  * then a private constructor is generated with all fields as arguments
  * (as if {@code @AllArgsConstructor(AccessLevel.PRIVATE)} is present
  * on the class), and it is as if this constructor has been annotated with {@code @Builder} instead.
  * <p>
  * The effect of {@code @Builder} is that an inner class is generated named <code><strong>T</strong>Builder</code>,
- * with a private constructor. Instances of <code><strong>T</strong>Builder</code> are made with the static
+ * with a private constructor. Instances of <code><strong>T</strong>Builder</code> are made with the
  * method named {@code builder()} which is also generated for you in the class itself (not in the builder class).
  * <p>
  * The <code><strong>T</strong>Builder</code> class contains 1 method for each parameter of the annotated
- * constructor / static method (each field, when annotating a class), which returns the builder itself.
+ * constructor / method (each field, when annotating a class), which returns the builder itself.
  * The builder also has a <code>build()</code> method which returns a completed instance of the original type,
  * created by passing all parameters as set via the various other methods in the builder to the constructor
- * or static method that was annotated with {@code @Builder}. The return type of this method will be the same
- * as the relevant class, unless a static method has been annotated, in which case it'll be equal to the
+ * or method that was annotated with {@code @Builder}. The return type of this method will be the same
+ * as the relevant class, unless a method has been annotated, in which case it'll be equal to the
  * return type of that method.
  * <p>
  * Complete documentation is found at <a href="https://projectlombok.org/features/experimental/Builder.html">the project lombok features page for &#64;Builder</a>.
@@ -107,10 +107,10 @@ import java.lang.annotation.Target;
 @Target({TYPE, METHOD, CONSTRUCTOR})
 @Retention(SOURCE)
 public @interface Builder {
-	/** Name of the static method that creates a new builder instance. Default: {@code builder}. */
+	/** Name of the method that creates a new builder instance. Default: {@code builder}. */
 	String builderMethodName() default "builder";
 	
-	/** Name of the instance method in the builder class that creates an instance of your {@code @Builder}-annotated class. */
+	/** Name of the method in the builder class that creates an instance of your {@code @Builder}-annotated class. */
 	String buildMethodName() default "build";
 	
 	/**
@@ -118,7 +118,7 @@ public @interface Builder {
 	 * 
 	 * Default for {@code @Builder} on types and constructors: {@code (TypeName)Builder}.
 	 * <p>
-	 * Default for {@code @Builder} on static methods: {@code (ReturnTypeName)Builder}.
+	 * Default for {@code @Builder} on methods: {@code (ReturnTypeName)Builder}.
 	 */
 	String builderClassName() default "";
 	
diff --git a/src/core/lombok/eclipse/handlers/HandleBuilder.java b/src/core/lombok/eclipse/handlers/HandleBuilder.java
index ef06e249..be14653a 100644
--- a/src/core/lombok/eclipse/handlers/HandleBuilder.java
+++ b/src/core/lombok/eclipse/handlers/HandleBuilder.java
@@ -49,6 +49,7 @@ import org.eclipse.jdt.internal.compiler.ast.MethodDeclaration;
 import org.eclipse.jdt.internal.compiler.ast.OperatorIds;
 import org.eclipse.jdt.internal.compiler.ast.ParameterizedQualifiedTypeReference;
 import org.eclipse.jdt.internal.compiler.ast.ParameterizedSingleTypeReference;
+import org.eclipse.jdt.internal.compiler.ast.QualifiedThisReference;
 import org.eclipse.jdt.internal.compiler.ast.QualifiedTypeReference;
 import org.eclipse.jdt.internal.compiler.ast.ReturnStatement;
 import org.eclipse.jdt.internal.compiler.ast.SingleNameReference;
@@ -163,6 +164,7 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		
 		EclipseNode fillParametersFrom = parent.get() instanceof AbstractMethodDeclaration ? parent : null;
 		boolean addCleaning = false;
+		boolean isStatic = true;
 		
 		if (parent.get() instanceof TypeDeclaration) {
 			tdParent = parent;
@@ -212,11 +214,8 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		} else if (parent.get() instanceof MethodDeclaration) {
 			MethodDeclaration md = (MethodDeclaration) parent.get();
 			tdParent = parent.up();
-			if (!md.isStatic()) {
-				annotationNode.addError("@Builder is only supported on types, constructors, and static methods.");
-				return;
-			}
-			
+			isStatic = md.isStatic();
+
 			if (toBuilder) {
 				final String TO_BUILDER_NOT_SUPPORTED = "@Builder(toBuilder=true) is only supported if you return your own type.";
 				char[] token;
@@ -322,7 +321,7 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 				builderClassName = new String(token) + "Builder";
 			}
 		} else {
-			annotationNode.addError("@Builder is only supported on types, constructors, and static methods.");
+			annotationNode.addError("@Builder is only supported on types, constructors, and methods.");
 			return;
 		}
 		
@@ -342,8 +341,16 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		
 		EclipseNode builderType = findInnerClass(tdParent, builderClassName);
 		if (builderType == null) {
-			builderType = makeBuilderClass(tdParent, builderClassName, typeParams, ast);
+			builderType = makeBuilderClass(isStatic, tdParent, builderClassName, typeParams, ast);
 		} else {
+			TypeDeclaration builderTypeDeclaration = (TypeDeclaration) builderType.get();
+			if (isStatic && (builderTypeDeclaration.modifiers & ClassFileConstants.AccStatic) == 0) {
+				annotationNode.addError("Existing Builder must be a static inner class.");
+				return;
+			} else if (!isStatic && (builderTypeDeclaration.modifiers & ClassFileConstants.AccStatic) != 0) {
+				annotationNode.addError("Existing Builder must be a non-static inner class.");
+				return;
+			}
 			sanityCheckForMethodGeneratingAnnotationsOnBuilderClass(builderType, annotationNode);
 			/* generate errors for @Singular BFDs that have one already defined node. */ {
 				for (BuilderFieldData bfd : builderFields) {
@@ -398,7 +405,7 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		}
 		
 		if (methodExists(buildMethodName, builderType, -1) == MemberExistsResult.NOT_EXISTS) {
-			MethodDeclaration md = generateBuildMethod(buildMethodName, nameOfStaticBuilderMethod, returnType, builderFields, builderType, thrownExceptions, addCleaning, ast);
+			MethodDeclaration md = generateBuildMethod(isStatic, buildMethodName, nameOfStaticBuilderMethod, returnType, builderFields, builderType, thrownExceptions, addCleaning, ast);
 			if (md != null) injectMethod(builderType, md);
 		}
 		
@@ -417,7 +424,7 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		}
 		
 		if (methodExists(builderMethodName, tdParent, -1) == MemberExistsResult.NOT_EXISTS) {
-			MethodDeclaration md = generateBuilderMethod(builderMethodName, builderClassName, tdParent, typeParams, ast);
+			MethodDeclaration md = generateBuilderMethod(isStatic, builderMethodName, builderClassName, tdParent, typeParams, ast);
 			if (md != null) injectMethod(tdParent, md);
 		}
 		
@@ -507,7 +514,7 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		return decl;
 	}
 	
-	public MethodDeclaration generateBuildMethod(String name, char[] staticName, TypeReference returnType, List<BuilderFieldData> builderFields, EclipseNode type, TypeReference[] thrownExceptions, boolean addCleaning, ASTNode source) {
+	public MethodDeclaration generateBuildMethod(boolean isStatic, String name, char[] staticName, TypeReference returnType, List<BuilderFieldData> builderFields, EclipseNode type, TypeReference[] thrownExceptions, boolean addCleaning, ASTNode source) {
 		MethodDeclaration out = new MethodDeclaration(((CompilationUnitDeclaration) type.top().get()).compilationResult);
 		out.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
 		List<Statement> statements = new ArrayList<Statement>();
@@ -552,7 +559,10 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		} else {
 			MessageSend invoke = new MessageSend();
 			invoke.selector = staticName;
-			invoke.receiver = new SingleNameReference(type.up().getName().toCharArray(), 0);
+			if (isStatic)
+				invoke.receiver = new SingleNameReference(type.up().getName().toCharArray(), 0);
+			else
+				invoke.receiver = new QualifiedThisReference(new SingleTypeReference(type.up().getName().toCharArray(), 0) , 0, 0);
 			TypeParameter[] tps = ((TypeDeclaration) type.get()).typeParameters;
 			if (tps != null) {
 				TypeReference[] trs = new TypeReference[tps.length];
@@ -573,13 +583,14 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		return out;
 	}
 	
-	public MethodDeclaration generateBuilderMethod(String builderMethodName, String builderClassName, EclipseNode type, TypeParameter[] typeParams, ASTNode source) {
+	public MethodDeclaration generateBuilderMethod(boolean isStatic, String builderMethodName, String builderClassName, EclipseNode type, TypeParameter[] typeParams, ASTNode source) {
 		int pS = source.sourceStart, pE = source.sourceEnd;
 		long p = (long) pS << 32 | pE;
 		
 		MethodDeclaration out = new MethodDeclaration(((CompilationUnitDeclaration) type.top().get()).compilationResult);
 		out.selector = builderMethodName.toCharArray();
-		out.modifiers = ClassFileConstants.AccPublic | ClassFileConstants.AccStatic;
+		out.modifiers = ClassFileConstants.AccPublic;
+		if (isStatic) out.modifiers |= ClassFileConstants.AccStatic;
 		out.bits |= ECLIPSE_DO_NOT_TOUCH_FLAG;
 		out.returnType = namePlusTypeParamsToTypeReference(builderClassName.toCharArray(), typeParams, p);
 		out.typeParameters = copyTypeParams(typeParams, source);
@@ -661,11 +672,12 @@ public class HandleBuilder extends EclipseAnnotationHandler<Builder> {
 		return null;
 	}
 	
-	public EclipseNode makeBuilderClass(EclipseNode tdParent, String builderClassName, TypeParameter[] typeParams, ASTNode source) {
+	public EclipseNode makeBuilderClass(boolean isStatic, EclipseNode tdParent, String builderClassName, TypeParameter[] typeParams, ASTNode source) {
 		TypeDeclaration parent = (TypeDeclaration) tdParent.get();
 		TypeDeclaration builder = new TypeDeclaration(parent.compilationResult);
 		builder.bits |= Eclipse.ECLIPSE_DO_NOT_TOUCH_FLAG;
-		builder.modifiers |= ClassFileConstants.AccPublic | ClassFileConstants.AccStatic;
+		builder.modifiers |= ClassFileConstants.AccPublic;
+		if (isStatic) builder.modifiers |= ClassFileConstants.AccStatic;
 		builder.typeParameters = copyTypeParams(typeParams, source);
 		builder.name = builderClassName.toCharArray();
 		builder.traverse(new SetGeneratedByVisitor(source), (ClassScope) null);
diff --git a/src/core/lombok/experimental/Builder.java b/src/core/lombok/experimental/Builder.java
index 68250ffd..4d5e0f67 100644
--- a/src/core/lombok/experimental/Builder.java
+++ b/src/core/lombok/experimental/Builder.java
@@ -31,21 +31,21 @@ import java.lang.annotation.Target;
  * The builder annotation creates a so-called 'builder' aspect to the class that is annotated or the class
  * that contains a member which is annotated with {@code @Builder}.
  * <p>
- * If a member is annotated, it must be either a constructor or a static method. If a class is annotated,
+ * If a member is annotated, it must be either a constructor or a method. If a class is annotated,
  * then a private constructor is generated with all fields as arguments
  * (as if {@code @AllArgsConstructor(AccessLevel.PRIVATE)} is present
  * on the class), and it is as if this constructor has been annotated with {@code @Builder} instead.
  * <p>
  * The effect of {@code @Builder} is that an inner class is generated named <code><strong>T</strong>Builder</code>,
- * with a private constructor. Instances of <code><strong>T</strong>Builder</code> are made with the static
+ * with a private constructor. Instances of <code><strong>T</strong>Builder</code> are made with the
  * method named {@code builder()} which is also generated for you in the class itself (not in the builder class).
  * <p>
  * The <code><strong>T</strong>Builder</code> class contains 1 method for each parameter of the annotated
- * constructor / static method (each field, when annotating a class), which returns the builder itself.
+ * constructor / method (each field, when annotating a class), which returns the builder itself.
  * The builder also has a <code>build()</code> method which returns a completed instance of the original type,
  * created by passing all parameters as set via the various other methods in the builder to the constructor
- * or static method that was annotated with {@code @Builder}. The return type of this method will be the same
- * as the relevant class, unless a static method has been annotated, in which case it'll be equal to the
+ * or method that was annotated with {@code @Builder}. The return type of this method will be the same
+ * as the relevant class, unless a method has been annotated, in which case it'll be equal to the
  * return type of that method.
  * <p>
  * Complete documentation is found at <a href="https://projectlombok.org/features/experimental/Builder.html">the project lombok features page for &#64;Builder</a>.
@@ -110,15 +110,15 @@ import java.lang.annotation.Target;
 @Retention(SOURCE)
 @Deprecated
 public @interface Builder {
-	/** Name of the static method that creates a new builder instance. Default: {@code builder}. */
+	/** Name of the method that creates a new builder instance. Default: {@code builder}. */
 	String builderMethodName() default "builder";
 	
-	/** Name of the instance method in the builder class that creates an instance of your {@code @Builder}-annotated class. */
+	/** Name of the method in the builder class that creates an instance of your {@code @Builder}-annotated class. */
 	String buildMethodName() default "build";
 	
 	/** Name of the builder class.
 	 * Default for {@code @Builder} on types and constructors: {@code (TypeName)Builder}.
-	 * Default for {@code @Builder} on static methods: {@code (ReturnTypeName)Builder}.
+	 * Default for {@code @Builder} on methods: {@code (ReturnTypeName)Builder}.
 	 */
 	String builderClassName() default "";
 	
diff --git a/src/core/lombok/javac/handlers/HandleBuilder.java b/src/core/lombok/javac/handlers/HandleBuilder.java
index f0139b47..efe40da3 100644
--- a/src/core/lombok/javac/handlers/HandleBuilder.java
+++ b/src/core/lombok/javac/handlers/HandleBuilder.java
@@ -24,6 +24,8 @@ package lombok.javac.handlers;
 import java.lang.annotation.Annotation;
 import java.util.ArrayList;
 
+import javax.lang.model.element.Modifier;
+
 import org.mangosdk.spi.ProviderFor;
 
 import com.sun.tools.javac.code.Flags;
@@ -124,11 +126,12 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		JCExpression returnType;
 		List<JCTypeParameter> typeParams = List.nil();
 		List<JCExpression> thrownExceptions = List.nil();
-		Name nameOfStaticBuilderMethod;
+		Name nameOfBuilderMethod;
 		JavacNode tdParent;
 		
 		JavacNode fillParametersFrom = parent.get() instanceof JCMethodDecl ? parent : null;
 		boolean addCleaning = false;
+		boolean isStatic = true;
 		
 		if (parent.get() instanceof JCClassDecl) {
 			tdParent = parent;
@@ -157,7 +160,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 			returnType = namePlusTypeParamsToTypeReference(tdParent.getTreeMaker(), td.name, td.typarams);
 			typeParams = td.typarams;
 			thrownExceptions = List.nil();
-			nameOfStaticBuilderMethod = null;
+			nameOfBuilderMethod = null;
 			if (builderClassName.isEmpty()) builderClassName = td.name.toString() + "Builder";
 		} else if (fillParametersFrom != null && fillParametersFrom.getName().toString().equals("<init>")) {
 			JCMethodDecl jmd = (JCMethodDecl) fillParametersFrom.get();
@@ -171,21 +174,18 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 			returnType = namePlusTypeParamsToTypeReference(tdParent.getTreeMaker(), td.name, td.typarams);
 			typeParams = td.typarams;
 			thrownExceptions = jmd.thrown;
-			nameOfStaticBuilderMethod = null;
+			nameOfBuilderMethod = null;
 			if (builderClassName.isEmpty()) builderClassName = td.name.toString() + "Builder";
 		} else if (fillParametersFrom != null) {
 			tdParent = parent.up();
 			JCClassDecl td = (JCClassDecl) tdParent.get();
 			JCMethodDecl jmd = (JCMethodDecl) fillParametersFrom.get();
-			if ((jmd.mods.flags & Flags.STATIC) == 0) {
-				annotationNode.addError("@Builder is only supported on types, constructors, and static methods.");
-				return;
-			}
+			isStatic = (jmd.mods.flags & Flags.STATIC) != 0;
 			JCExpression fullReturnType = jmd.restype;
 			returnType = fullReturnType;
 			typeParams = jmd.typarams;
 			thrownExceptions = jmd.thrown;
-			nameOfStaticBuilderMethod = jmd.name;
+			nameOfBuilderMethod = jmd.name;
 			if (returnType instanceof JCTypeApply) {
 				returnType = ((JCTypeApply) returnType).clazz;
 			}
@@ -278,7 +278,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 				}
 			}
 		} else {
-			annotationNode.addError("@Builder is only supported on types, constructors, and static methods.");
+			annotationNode.addError("@Builder is only supported on types, constructors, and methods.");
 			return;
 		}
 		
@@ -298,8 +298,16 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		
 		JavacNode builderType = findInnerClass(tdParent, builderClassName);
 		if (builderType == null) {
-			builderType = makeBuilderClass(tdParent, builderClassName, typeParams, ast);
+			builderType = makeBuilderClass(isStatic, tdParent, builderClassName, typeParams, ast);
 		} else {
+			JCClassDecl builderTypeDeclaration = (JCClassDecl) builderType.get();
+			if (isStatic && !builderTypeDeclaration.getModifiers().getFlags().contains(Modifier.STATIC)) {
+				annotationNode.addError("Existing Builder must be a static inner class.");
+				return;
+			} else if (!isStatic && builderTypeDeclaration.getModifiers().getFlags().contains(Modifier.STATIC)) {
+				annotationNode.addError("Existing Builder must be a non-static inner class.");
+				return;
+			}
 			sanityCheckForMethodGeneratingAnnotationsOnBuilderClass(builderType, annotationNode);
 			/* generate errors for @Singular BFDs that have one already defined node. */ {
 				for (BuilderFieldData bfd : builderFields) {
@@ -351,7 +359,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		}
 		
 		if (methodExists(buildMethodName, builderType, -1) == MemberExistsResult.NOT_EXISTS) {
-			JCMethodDecl md = generateBuildMethod(buildMethodName, nameOfStaticBuilderMethod, returnType, builderFields, builderType, thrownExceptions, ast, addCleaning);
+			JCMethodDecl md = generateBuildMethod(isStatic, buildMethodName, nameOfBuilderMethod, returnType, builderFields, builderType, thrownExceptions, ast, addCleaning);
 			if (md != null) injectMethod(builderType, md);
 		}
 		
@@ -367,7 +375,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		if (addCleaning) injectMethod(builderType, generateCleanMethod(builderFields, builderType, ast));
 		
 		if (methodExists(builderMethodName, tdParent, -1) == MemberExistsResult.NOT_EXISTS) {
-			JCMethodDecl md = generateBuilderMethod(builderMethodName, builderClassName, tdParent, typeParams);
+			JCMethodDecl md = generateBuilderMethod(isStatic, builderMethodName, builderClassName, tdParent, typeParams);
 			recursiveSetGeneratedBy(md, ast, annotationNode.getContext());
 			if (md != null) injectMethod(tdParent, md);
 		}
@@ -488,7 +496,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		 */
 	}
 	
-	private JCMethodDecl generateBuildMethod(String name, Name staticName, JCExpression returnType, java.util.List<BuilderFieldData> builderFields, JavacNode type, List<JCExpression> thrownExceptions, JCTree source, boolean addCleaning) {
+	private JCMethodDecl generateBuildMethod(boolean isStatic, String buildName, Name builderName, JCExpression returnType, java.util.List<BuilderFieldData> builderFields, JavacNode type, List<JCExpression> thrownExceptions, JCTree source, boolean addCleaning) {
 		JavacTreeMaker maker = type.getTreeMaker();
 		
 		JCExpression call;
@@ -516,16 +524,19 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 			statements.append(maker.Exec(maker.Assign(maker.Select(maker.Ident(type.toName("this")), type.toName("$lombokUnclean")), maker.Literal(CTC_BOOLEAN, true))));
 		}
 		
-		if (staticName == null) {
+		if (builderName == null) {
 			call = maker.NewClass(null, List.<JCExpression>nil(), returnType, args.toList(), null);
 			statements.append(maker.Return(call));
 		} else {
+
 			ListBuffer<JCExpression> typeParams = new ListBuffer<JCExpression>();
 			for (JCTypeParameter tp : ((JCClassDecl) type.get()).typarams) {
 				typeParams.append(maker.Ident(tp.name));
 			}
-			
-			JCExpression fn = maker.Select(maker.Ident(((JCClassDecl) type.up().get()).name), staticName);
+			JCExpression callee = maker.Ident(((JCClassDecl) type.up().get()).name);
+			if (!isStatic)
+				callee = maker.Select(callee, type.up().toName("this"));
+			JCExpression fn = maker.Select(callee, builderName);
 			call = maker.Apply(typeParams.toList(), fn, args.toList());
 			if (returnType instanceof JCPrimitiveTypeTree && CTC_VOID.equals(typeTag(returnType))) {
 				statements.append(maker.Exec(call));
@@ -536,10 +547,10 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		
 		JCBlock body = maker.Block(0, statements.toList());
 		
-		return maker.MethodDef(maker.Modifiers(Flags.PUBLIC), type.toName(name), returnType, List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), thrownExceptions, body, null);
+		return maker.MethodDef(maker.Modifiers(Flags.PUBLIC), type.toName(buildName), returnType, List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), thrownExceptions, body, null);
 	}
 	
-	public JCMethodDecl generateBuilderMethod(String builderMethodName, String builderClassName, JavacNode type, List<JCTypeParameter> typeParams) {
+	public JCMethodDecl generateBuilderMethod(boolean isStatic, String builderMethodName, String builderClassName, JavacNode type, List<JCTypeParameter> typeParams) {
 		JavacTreeMaker maker = type.getTreeMaker();
 		
 		ListBuffer<JCExpression> typeArgs = new ListBuffer<JCExpression>();
@@ -551,7 +562,9 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		JCStatement statement = maker.Return(call);
 		
 		JCBlock body = maker.Block(0, List.<JCStatement>of(statement));
-		return maker.MethodDef(maker.Modifiers(Flags.STATIC | Flags.PUBLIC), type.toName(builderMethodName), namePlusTypeParamsToTypeReference(maker, type.toName(builderClassName), typeParams), copyTypeParams(maker, typeParams), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null);
+		int modifiers = Flags.PUBLIC;
+		if (isStatic) modifiers |= Flags.STATIC;
+		return maker.MethodDef(maker.Modifiers(modifiers), type.toName(builderMethodName), namePlusTypeParamsToTypeReference(maker, type.toName(builderClassName), typeParams), copyTypeParams(maker, typeParams), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null);
 	}
 	
 	public void generateBuilderFields(JavacNode builderType, java.util.List<BuilderFieldData> builderFields, JCTree source) {
@@ -615,9 +628,11 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		return null;
 	}
 	
-	public JavacNode makeBuilderClass(JavacNode tdParent, String builderClassName, List<JCTypeParameter> typeParams, JCAnnotation ast) {
+	public JavacNode makeBuilderClass(boolean isStatic, JavacNode tdParent, String builderClassName, List<JCTypeParameter> typeParams, JCAnnotation ast) {
 		JavacTreeMaker maker = tdParent.getTreeMaker();
-		JCModifiers mods = maker.Modifiers(Flags.PUBLIC | Flags.STATIC);
+		int modifiers = Flags.PUBLIC;
+		if (isStatic) modifiers |= Flags.STATIC;
+		JCModifiers mods = maker.Modifiers(modifiers);
 		JCClassDecl builder = maker.ClassDef(mods, tdParent.toName(builderClassName), copyTypeParams(maker, typeParams), null, List.<JCExpression>nil(), List.<JCTree>nil());
 		return injectType(tdParent, builder);
 	}
diff --git a/test/transform/resource/after-delombok/BuilderInstanceMethod.java b/test/transform/resource/after-delombok/BuilderInstanceMethod.java
new file mode 100644
index 00000000..61e237d0
--- /dev/null
+++ b/test/transform/resource/after-delombok/BuilderInstanceMethod.java
@@ -0,0 +1,66 @@
+import java.util.List;
+class BuilderInstanceMethod<T> {
+	public String create(int show, final int yes, List<T> also, int $andMe) {
+		return "" + show + yes + also + $andMe;
+	}
+	@java.lang.SuppressWarnings("all")
+	@javax.annotation.Generated("lombok")
+	public class StringBuilder {
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		private int show;
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		private int yes;
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		private List<T> also;
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		private int $andMe;
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		StringBuilder() {
+		}
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		public StringBuilder show(final int show) {
+			this.show = show;
+			return this;
+		}
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		public StringBuilder yes(final int yes) {
+			this.yes = yes;
+			return this;
+		}
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		public StringBuilder also(final List<T> also) {
+			this.also = also;
+			return this;
+		}
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		public StringBuilder $andMe(final int $andMe) {
+			this.$andMe = $andMe;
+			return this;
+		}
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		public String build() {
+			return BuilderInstanceMethod.this.create(show, yes, also, $andMe);
+		}
+		@java.lang.Override
+		@java.lang.SuppressWarnings("all")
+		@javax.annotation.Generated("lombok")
+		public java.lang.String toString() {
+			return "BuilderInstanceMethod.StringBuilder(show=" + this.show + ", yes=" + this.yes + ", also=" + this.also + ", $andMe=" + this.$andMe + ")";
+		}
+	}
+	@java.lang.SuppressWarnings("all")
+	@javax.annotation.Generated("lombok")
+	public StringBuilder builder() {
+		return new StringBuilder();
+	}
+}
diff --git a/test/transform/resource/after-ecj/BuilderInstanceMethod.java b/test/transform/resource/after-ecj/BuilderInstanceMethod.java
new file mode 100644
index 00000000..ff7d0aab
--- /dev/null
+++ b/test/transform/resource/after-ecj/BuilderInstanceMethod.java
@@ -0,0 +1,43 @@
+import java.util.List;
+class BuilderInstanceMethod<T> {
+  public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") class StringBuilder {
+    private @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") int show;
+    private @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") int yes;
+    private @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") List<T> also;
+    private @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") int $andMe;
+    @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") StringBuilder() {
+      super();
+    }
+    public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") StringBuilder show(final int show) {
+      this.show = show;
+      return this;
+    }
+    public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") StringBuilder yes(final int yes) {
+      this.yes = yes;
+      return this;
+    }
+    public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") StringBuilder also(final List<T> also) {
+      this.also = also;
+      return this;
+    }
+    public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") StringBuilder $andMe(final int $andMe) {
+      this.$andMe = $andMe;
+      return this;
+    }
+    public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") String build() {
+      return BuilderInstanceMethod.this.create(show, yes, also, $andMe);
+    }
+    public @java.lang.Override @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") java.lang.String toString() {
+      return (((((((("BuilderInstanceMethod.StringBuilder(show=" + this.show) + ", yes=") + this.yes) + ", also=") + this.also) + ", $andMe=") + this.$andMe) + ")");
+    }
+  }
+  BuilderInstanceMethod() {
+    super();
+  }
+  public @lombok.Builder String create(int show, final int yes, List<T> also, int $andMe) {
+    return (((("" + show) + yes) + also) + $andMe);
+  }
+  public @java.lang.SuppressWarnings("all") @javax.annotation.Generated("lombok") StringBuilder builder() {
+    return new StringBuilder();
+  }
+}
diff --git a/test/transform/resource/before/BuilderInstanceMethod.java b/test/transform/resource/before/BuilderInstanceMethod.java
new file mode 100644
index 00000000..666664a2
--- /dev/null
+++ b/test/transform/resource/before/BuilderInstanceMethod.java
@@ -0,0 +1,8 @@
+import java.util.List;
+
+class BuilderInstanceMethod<T> {
+	@lombok.Builder
+	public String create(int show, final int yes, List<T> also, int $andMe) {
+		return "" + show + yes + also + $andMe;
+	}
+}
diff --git a/website/features/Builder.html b/website/features/Builder.html
index 6cf46600..2ab8aa77 100644
--- a/website/features/Builder.html
+++ b/website/features/Builder.html
@@ -28,16 +28,16 @@
 			<code>@Builder</code> lets you automatically produce the code required to have your class be instantiable with code such as:<br />
 			<code>Person.builder().name("Adam Savage").city("San Francisco").job("Mythbusters").job("Unchained Reaction").build();</code>
 			</p><p>
-			<code>@Builder</code> can be placed on a class, or on a constructor, or on a static method. While the "on a class" and "on a constructor"
-			mode are the most common use-case, <code>@Builder</code> is most easily explained with the "static method" use-case.
+			<code>@Builder</code> can be placed on a class, or on a constructor, or on a method. While the "on a class" and "on a constructor"
+			mode are the most common use-case, <code>@Builder</code> is most easily explained with the "method" use-case.
 			</p><p>
-			A static method annotated with <code>@Builder</code> (from now on called the <em>target</em>)  causes the following 7 things to be generated:<ul>
-			<li>An inner static class named <code><em>Foo</em>Builder</code>, with the same type arguments as the static method (called the <em>builder</em>).</li>
+			A method annotated with <code>@Builder</code> (from now on called the <em>target</em>)  causes the following 7 things to be generated:<ul>
+			<li>An inner class named <code><em>Foo</em>Builder</code>, with the same type arguments as the method (called the <em>builder</em>).</li>
 			<li>In the <em>builder</em>: One private non-static non-final field for each parameter of the <em>target</em>.</li>
 			<li>In the <em>builder</em>: A package private no-args empty constructor.</li>
 			<li>In the <em>builder</em>: A 'setter'-like method for each parameter of the <em>target</em>: It has the same type as that parameter and the same name.
 				It returns the builder itself, so that the setter calls can be chained, as in the above example.</li>
-			<li>In the <em>builder</em>: A <code>build()</code> method which calls the static method, passing in each field. It returns the same type that the
+			<li>In the <em>builder</em>: A <code>build()</code> method which calls the method, passing in each field. It returns the same type that the
 				<em>target</em> returns.</li>
 			<li>In the <em>builder</em>: A sensible <code>toString()</code> implementation.</li>
 			<li>In the class containing the <em>target</em>: A static <code>builder()</code> method, which creates a new instance of the <em>builder</em>.</li>
@@ -51,7 +51,7 @@
 			element to the list. For example: <code>Person.builder().job("Mythbusters").job("Unchained Reaction").build();</code> would result in the <code>List&lt;String&gt; jobs</code>
 			field to have 2 strings in it. To get this behaviour, the field/parameter needs to be annotated with <code>@Singular</code>. The feature has <a href="#singular">its own documentation</a>.
 			</p><p>
-			Now that the "static method" mode is clear, putting a <code>@Builder</code> annotation on a constructor functions similarly; effectively,
+			Now that the "method" mode is clear, putting a <code>@Builder</code> annotation on a constructor functions similarly; effectively,
 			constructors are just static methods that have a special syntax to invoke them: Their 'return type' is the class they construct, and their
 			type parameters are the same as the type parameters of the class itself.
 			</p><p>
@@ -63,8 +63,8 @@
 			</p><p>
 			The name of the builder class is <code><em>Foobar</em>Builder</code>, where <em>Foobar</em> is the simplified, title-cased form of the return type of the 
 			<em>target</em> - that is, the name of your type for <code>@Builder</code> on constructors and types, and the name of the return type for <code>@Builder</code>
-			on static methods. For example, if <code>@Builder</code> is applied to a class named <code>com.yoyodyne.FancyList&lt;T&gt;</code>, then the builder name will be
-			<code>FancyListBuilder&lt;T&gt;</code>. If <code>@Builder</code> is applied to a static method that returns <code>void</code>, the builder will be named
+			on methods. For example, if <code>@Builder</code> is applied to a class named <code>com.yoyodyne.FancyList&lt;T&gt;</code>, then the builder name will be
+			<code>FancyListBuilder&lt;T&gt;</code>. If <code>@Builder</code> is applied to a method that returns <code>void</code>, the builder will be named
 			<code>VoidBuilder</code>.
 			</p><p>
 			The configurable aspects of builder are:<ul>
@@ -80,7 +80,7 @@
 		<div class="overview">
 			<h3><a name="singular">@Singular</a></h3>
 			<p>
-				By annotating one of the parameters (if annotating a static method or constructor with <code>@Builder</code>) or fields (if annotating a class with <code>@Builder</code>) with the
+				By annotating one of the parameters (if annotating a method or constructor with <code>@Builder</code>) or fields (if annotating a class with <code>@Builder</code>) with the
 				<code>@Singular</code> annotation, lombok will treat that builder node as a collection, and it generates 2 'adder' methods instead of a 'setter' method. One which adds a single element to the collection, and one
 				which adds all elements of another collection to the collection. No setter to just set the collection (replacing whatever was already added) will be generated. These 'singular' builders
 				are very complicated in order to guarantee the following properties: