[Fixes #2115] builder fields tracking a property that has a default set is now called `$value` in order to convey that you shouldnt manually mess with it.

5 files changed, 56 insertions, 44 deletions

diff --git a/src/core/lombok/javac/handlers/HandleBuilder.java b/src/core/lombok/javac/handlers/HandleBuilder.java
index b339c2ca..35a6dc26 100644
--- a/src/core/lombok/javac/handlers/HandleBuilder.java
+++ b/src/core/lombok/javac/handlers/HandleBuilder.java
@@ -89,6 +89,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		JCExpression type;
 		Name rawName;
 		Name name;
+		Name builderFieldName;
 		Name nameOfDefaultProvider;
 		Name nameOfSetFlag;
 		SingularData singularData;
@@ -174,6 +175,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 				BuilderFieldData bfd = new BuilderFieldData();
 				bfd.rawName = fd.name;
 				bfd.name = removePrefixFromField(fieldNode);
+				bfd.builderFieldName = bfd.name;
 				bfd.annotations = findCopyableAnnotations(fieldNode);
 				bfd.type = fd.vartype;
 				bfd.singularData = getSingularData(fieldNode);
@@ -200,6 +202,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 				if (isDefault != null) {
 					bfd.nameOfDefaultProvider = parent.toName("$default$" + bfd.name);
 					bfd.nameOfSetFlag = parent.toName(bfd.name + "$set");
+					bfd.builderFieldName = parent.toName(bfd.name + "$value");
 					JCMethodDecl md = generateDefaultProvider(bfd.nameOfDefaultProvider, fieldNode, td.typarams);
 					recursiveSetGeneratedBy(md, ast, annotationNode.getContext());
 					if (md != null) injectMethod(tdParent, md);
@@ -360,6 +363,7 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 				
 				JCVariableDecl raw = (JCVariableDecl) param.get();
 				bfd.name = raw.name;
+				bfd.builderFieldName = bfd.name;
 				bfd.rawName = raw.name;
 				bfd.annotations = findCopyableAnnotations(param);
 				bfd.type = raw.vartype;
@@ -628,17 +632,17 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 		
 		for (BuilderFieldData bfd : builderFields) {
 			if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
-				bfd.singularData.getSingularizer().appendBuildCode(bfd.singularData, type, source, statements, bfd.name, "this");
+				bfd.singularData.getSingularizer().appendBuildCode(bfd.singularData, type, source, statements, bfd.builderFieldName, "this");
 			}
 		}
 		
 		ListBuffer<JCExpression> args = new ListBuffer<JCExpression>();
 		for (BuilderFieldData bfd : builderFields) {
 			if (bfd.nameOfSetFlag != null) {
-				statements.append(maker.VarDef(maker.Modifiers(0L), bfd.name, cloneType(maker, bfd.type, source, tdParent.getContext()), maker.Select(maker.Ident(type.toName("this")), bfd.name)));
-				statements.append(maker.If(maker.Unary(CTC_NOT, maker.Ident(bfd.nameOfSetFlag)), maker.Exec(maker.Assign(maker.Ident(bfd.name),maker.Apply(typeParameterNames(maker, ((JCClassDecl) tdParent.get()).typarams), maker.Select(maker.Ident(((JCClassDecl) tdParent.get()).name), bfd.nameOfDefaultProvider), List.<JCExpression>nil()))), null));
+				statements.append(maker.VarDef(maker.Modifiers(0L), bfd.builderFieldName, cloneType(maker, bfd.type, source, tdParent.getContext()), maker.Select(maker.Ident(type.toName("this")), bfd.builderFieldName)));
+				statements.append(maker.If(maker.Unary(CTC_NOT, maker.Ident(bfd.nameOfSetFlag)), maker.Exec(maker.Assign(maker.Ident(bfd.builderFieldName), maker.Apply(typeParameterNames(maker, ((JCClassDecl) tdParent.get()).typarams), maker.Select(maker.Ident(((JCClassDecl) tdParent.get()).name), bfd.nameOfDefaultProvider), List.<JCExpression>nil()))), null));
 			}
-			args.append(maker.Ident(bfd.name));
+			args.append(maker.Ident(bfd.builderFieldName));
 		}
 		
 		if (addCleaning) {
@@ -715,13 +719,13 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 				JavacNode field = null, setFlag = null;
 				for (JavacNode exists : existing) {
 					Name n = ((JCVariableDecl) exists.get()).name;
-					if (n.equals(bfd.name)) field = exists;
+					if (n.equals(bfd.builderFieldName)) field = exists;
 					if (n.equals(bfd.nameOfSetFlag)) setFlag = exists;
 				}
 				JavacTreeMaker maker = builderType.getTreeMaker();
 				if (field == null) {
 					JCModifiers mods = maker.Modifiers(Flags.PRIVATE);
-					JCVariableDecl newField = maker.VarDef(mods, bfd.name, cloneType(maker, bfd.type, source, builderType.getContext()), null);
+					JCVariableDecl newField = maker.VarDef(mods, bfd.builderFieldName, cloneType(maker, bfd.type, source, builderType.getContext()), null);
 					field = injectFieldAndMarkGenerated(builderType, newField);
 					generated.add(newField);
 				}
@@ -740,13 +744,13 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 	public void makeSetterMethodsForBuilder(JavacNode builderType, BuilderFieldData fieldNode, JavacNode source, boolean fluent, boolean chain, AccessLevel access) {
 		boolean deprecate = isFieldDeprecated(fieldNode.originalFieldNode);
 		if (fieldNode.singularData == null || fieldNode.singularData.getSingularizer() == null) {
-			makeSimpleSetterMethodForBuilder(builderType, deprecate, fieldNode.createdFields.get(0), fieldNode.nameOfSetFlag, source, fluent, chain, fieldNode.annotations, fieldNode.originalFieldNode, access);
+			makeSimpleSetterMethodForBuilder(builderType, deprecate, fieldNode.createdFields.get(0), fieldNode.name, fieldNode.nameOfSetFlag, source, fluent, chain, fieldNode.annotations, fieldNode.originalFieldNode, access);
 		} else {
 			fieldNode.singularData.getSingularizer().generateMethods(fieldNode.singularData, deprecate, builderType, source.get(), fluent, chain, access);
 		}
 	}
 	
-	private void makeSimpleSetterMethodForBuilder(JavacNode builderType, boolean deprecate, JavacNode fieldNode, Name nameOfSetFlag, JavacNode source, boolean fluent, boolean chain, List<JCAnnotation> annosOnParam, JavacNode originalFieldNode, AccessLevel access) {
+	private void makeSimpleSetterMethodForBuilder(JavacNode builderType, boolean deprecate, JavacNode fieldNode, Name paramName, Name nameOfSetFlag, JavacNode source, boolean fluent, boolean chain, List<JCAnnotation> annosOnParam, JavacNode originalFieldNode, AccessLevel access) {
 		Name fieldName = ((JCVariableDecl) fieldNode.get()).name;
 		
 		for (JavacNode child : builderType.down()) {
@@ -756,12 +760,12 @@ public class HandleBuilder extends JavacAnnotationHandler<Builder> {
 			if (existingName.equals(fieldName) && !isTolerate(fieldNode, methodDecl)) return;
 		}
 		
-		String setterName = fluent ? fieldNode.getName() : HandlerUtil.buildAccessorName("set", fieldNode.getName());
+		String setterName = fluent ? paramName.toString() : HandlerUtil.buildAccessorName("set", paramName.toString());
 		
 		JavacTreeMaker maker = fieldNode.getTreeMaker();
 		
 		List<JCAnnotation> methodAnns = JavacHandlerUtil.findCopyableToSetterAnnotations(originalFieldNode);
-		JCMethodDecl newMethod = HandleSetter.createSetter(toJavacModifier(access), deprecate, fieldNode, maker, setterName, nameOfSetFlag, chain, source, methodAnns, annosOnParam);
+		JCMethodDecl newMethod = HandleSetter.createSetter(toJavacModifier(access), deprecate, fieldNode, maker, setterName, paramName, nameOfSetFlag, chain, source, methodAnns, annosOnParam);
 		recursiveSetGeneratedBy(newMethod, source.get(), builderType.getContext());
 		copyJavadoc(originalFieldNode, newMethod, CopyJavadoc.SETTER);
 		
diff --git a/src/core/lombok/javac/handlers/HandleConstructor.java b/src/core/lombok/javac/handlers/HandleConstructor.java
index e0456782..096963f4 100644
--- a/src/core/lombok/javac/handlers/HandleConstructor.java
+++ b/src/core/lombok/javac/handlers/HandleConstructor.java
@@ -342,7 +342,7 @@ public class HandleConstructor {
 			JCVariableDecl param = maker.VarDef(maker.Modifiers(flags, copyableAnnotations), fieldName, field.vartype, null);
 			params.append(param);
 			if (hasNonNullAnnotations(fieldNode)) {
-				JCStatement nullCheck = generateNullCheck(maker, fieldNode, param, source);
+				JCStatement nullCheck = generateNullCheck(maker, param, source);
 				if (nullCheck != null) nullChecks.append(nullCheck);
 			}
 			JCFieldAccess thisX = maker.Select(maker.Ident(fieldNode.toName("this")), rawName);
diff --git a/src/core/lombok/javac/handlers/HandleSetter.java b/src/core/lombok/javac/handlers/HandleSetter.java
index 5482cccc..cd8b5d1c 100644
--- a/src/core/lombok/javac/handlers/HandleSetter.java
+++ b/src/core/lombok/javac/handlers/HandleSetter.java
@@ -203,10 +203,10 @@ public class HandleSetter extends JavacAnnotationHandler<Setter> {
 	public static JCMethodDecl createSetter(long access, JavacNode field, JavacTreeMaker treeMaker, JavacNode source, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
 		String setterName = toSetterName(field);
 		boolean returnThis = shouldReturnThis(field);
-		return createSetter(access, false, field, treeMaker, setterName, null, returnThis, source, onMethod, onParam);
+		return createSetter(access, false, field, treeMaker, setterName, null, null, returnThis, source, onMethod, onParam);
 	}
 	
-	public static JCMethodDecl createSetter(long access, boolean deprecate, JavacNode field, JavacTreeMaker treeMaker, String setterName, Name booleanFieldToSet, boolean shouldReturnThis, JavacNode source, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
+	public static JCMethodDecl createSetter(long access, boolean deprecate, JavacNode field, JavacTreeMaker treeMaker, String setterName, Name paramName, Name booleanFieldToSet, boolean shouldReturnThis, JavacNode source, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
 		JCExpression returnType = null;
 		JCReturn returnStatement = null;
 		if (shouldReturnThis) {
@@ -214,16 +214,17 @@ public class HandleSetter extends JavacAnnotationHandler<Setter> {
 			returnStatement = treeMaker.Return(treeMaker.Ident(field.toName("this")));
 		}
 		
-		return createSetter(access, deprecate, field, treeMaker, setterName, booleanFieldToSet, returnType, returnStatement, source, onMethod, onParam);
+		return createSetter(access, deprecate, field, treeMaker, setterName, paramName, booleanFieldToSet, returnType, returnStatement, source, onMethod, onParam);
 	}
 	
-	public static JCMethodDecl createSetter(long access, boolean deprecate, JavacNode field, JavacTreeMaker treeMaker, String setterName, Name booleanFieldToSet, JCExpression methodType, JCStatement returnStatement, JavacNode source, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
+	public static JCMethodDecl createSetter(long access, boolean deprecate, JavacNode field, JavacTreeMaker treeMaker, String setterName, Name paramName, Name booleanFieldToSet, JCExpression methodType, JCStatement returnStatement, JavacNode source, List<JCAnnotation> onMethod, List<JCAnnotation> onParam) {
 		if (setterName == null) return null;
 		
 		JCVariableDecl fieldDecl = (JCVariableDecl) field.get();
+		if (paramName == null) paramName = fieldDecl.name;
 		
 		JCExpression fieldRef = createFieldAccessor(treeMaker, field, FieldAccess.ALWAYS_FIELD);
-		JCAssign assign = treeMaker.Assign(fieldRef, treeMaker.Ident(fieldDecl.name));
+		JCAssign assign = treeMaker.Assign(fieldRef, treeMaker.Ident(paramName));
 		
 		ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>();
 		List<JCAnnotation> copyableAnnotations = findCopyableAnnotations(field);
@@ -232,12 +233,12 @@ public class HandleSetter extends JavacAnnotationHandler<Setter> {
 		List<JCAnnotation> annsOnParam = copyAnnotations(onParam).appendList(copyableAnnotations);
 		
 		long flags = JavacHandlerUtil.addFinalIfNeeded(Flags.PARAMETER, field.getContext());
-		JCVariableDecl param = treeMaker.VarDef(treeMaker.Modifiers(flags, annsOnParam), fieldDecl.name, fieldDecl.vartype, null);
+		JCVariableDecl param = treeMaker.VarDef(treeMaker.Modifiers(flags, annsOnParam), paramName, fieldDecl.vartype, null);
 		
 		if (!hasNonNullAnnotations(field) && !hasNonNullAnnotations(field, onParam)) {
 			statements.append(treeMaker.Exec(assign));
 		} else {
-			JCStatement nullCheck = generateNullCheck(treeMaker, field, source);
+			JCStatement nullCheck = generateNullCheck(treeMaker, fieldDecl.vartype, paramName, source);
 			if (nullCheck != null) statements.append(nullCheck);
 			statements.append(treeMaker.Exec(assign));
 		}
@@ -267,7 +268,7 @@ public class HandleSetter extends JavacAnnotationHandler<Setter> {
 		}
 		
 		JCMethodDecl decl = recursiveSetGeneratedBy(treeMaker.MethodDef(treeMaker.Modifiers(access, annsOnMethod), methodName, methodType,
-				methodGenericParams, parameters, throwsClauses, methodBody, annotationMethodDefaultValue), source.get(), field.getContext());
+			methodGenericParams, parameters, throwsClauses, methodBody, annotationMethodDefaultValue), source.get(), field.getContext());
 		copyJavadoc(field, decl, CopyJavadoc.SETTER);
 		return decl;
 	}
diff --git a/src/core/lombok/javac/handlers/HandleSuperBuilder.java b/src/core/lombok/javac/handlers/HandleSuperBuilder.java
index 9120fa07..a5c492a1 100644
--- a/src/core/lombok/javac/handlers/HandleSuperBuilder.java
+++ b/src/core/lombok/javac/handlers/HandleSuperBuilder.java
@@ -142,6 +142,7 @@ public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
 			BuilderFieldData bfd = new BuilderFieldData();
 			bfd.rawName = fd.name;
 			bfd.name = removePrefixFromField(fieldNode);
+			bfd.builderFieldName = bfd.name;
 			bfd.annotations = findCopyableAnnotations(fieldNode);
 			bfd.type = fd.vartype;
 			bfd.singularData = getSingularData(fieldNode);
@@ -166,7 +167,7 @@ public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
 			if (isDefault != null) {
 				bfd.nameOfDefaultProvider = tdParent.toName("$default$" + bfd.name);
 				bfd.nameOfSetFlag = tdParent.toName(bfd.name + "$set");
-				bfd.nameOfSetFlag = tdParent.toName(bfd.name + "$set");
+				bfd.builderFieldName = tdParent.toName(bfd.name + "$value");
 				JCMethodDecl md = HandleBuilder.generateDefaultProvider(bfd.nameOfDefaultProvider, fieldNode, td.typarams);
 				recursiveSetGeneratedBy(md, ast, annotationNode.getContext());
 				if (md != null) injectMethod(tdParent, md);
@@ -493,10 +494,10 @@ public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
 		for (BuilderFieldData bfd : builderFields) {
 			JCExpression rhs;
 			if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
-				bfd.singularData.getSingularizer().appendBuildCode(bfd.singularData, bfd.originalFieldNode, bfd.type, statements, bfd.name, "b");
+				bfd.singularData.getSingularizer().appendBuildCode(bfd.singularData, bfd.originalFieldNode, bfd.type, statements, bfd.builderFieldName, "b");
 				rhs = maker.Ident(bfd.singularData.getPluralName());
 			} else {
-				rhs = maker.Select(maker.Ident(builderVariableName), bfd.name);
+				rhs = maker.Select(maker.Ident(builderVariableName), bfd.builderFieldName);
 			}
 			JCFieldAccess fieldInThis = maker.Select(maker.Ident(typeNode.toName("this")), bfd.rawName);
 			
@@ -829,13 +830,13 @@ public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
 				JavacNode field = null, setFlag = null;
 				for (JavacNode exists : existing) {
 					Name n = ((JCVariableDecl) exists.get()).name;
-					if (n.equals(bfd.name)) field = exists;
+					if (n.equals(bfd.builderFieldName)) field = exists;
 					if (n.equals(bfd.nameOfSetFlag)) setFlag = exists;
 				}
 				JavacTreeMaker maker = builderType.getTreeMaker();
 				if (field == null) {
 					JCModifiers mods = maker.Modifiers(Flags.PRIVATE);
-					JCVariableDecl newField = maker.VarDef(mods, bfd.name, cloneType(maker, bfd.type, source, builderType.getContext()), null);
+					JCVariableDecl newField = maker.VarDef(mods, bfd.builderFieldName, cloneType(maker, bfd.type, source, builderType.getContext()), null);
 					field = injectFieldAndMarkGenerated(builderType, newField);
 					generated.add(newField);
 				}
@@ -863,13 +864,13 @@ public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
 		}};
 		
 		if (fieldNode.singularData == null || fieldNode.singularData.getSingularizer() == null) {
-			generateSimpleSetterMethodForBuilder(builderType, deprecate, fieldNode.createdFields.get(0), fieldNode.nameOfSetFlag, source, true, returnTypeMaker.make(), returnStatementMaker.make(), fieldNode.annotations, fieldNode.originalFieldNode);
+			generateSimpleSetterMethodForBuilder(builderType, deprecate, fieldNode.createdFields.get(0), fieldNode.name, fieldNode.nameOfSetFlag, source, true, returnTypeMaker.make(), returnStatementMaker.make(), fieldNode.annotations, fieldNode.originalFieldNode);
 		} else {
 			fieldNode.singularData.getSingularizer().generateMethods(fieldNode.singularData, deprecate, builderType, source.get(), true, returnTypeMaker, returnStatementMaker, AccessLevel.PUBLIC);
 		}
 	}
 	
-	private void generateSimpleSetterMethodForBuilder(JavacNode builderType, boolean deprecate, JavacNode fieldNode, Name nameOfSetFlag, JavacNode source, boolean fluent, JCExpression returnType, JCStatement returnStatement, List<JCAnnotation> annosOnParam, JavacNode originalFieldNode) {
+	private void generateSimpleSetterMethodForBuilder(JavacNode builderType, boolean deprecate, JavacNode fieldNode, Name paramName, Name nameOfSetFlag, JavacNode source, boolean fluent, JCExpression returnType, JCStatement returnStatement, List<JCAnnotation> annosOnParam, JavacNode originalFieldNode) {
 		Name fieldName = ((JCVariableDecl) fieldNode.get()).name;
 		
 		for (JavacNode child : builderType.down()) {
@@ -879,12 +880,12 @@ public class HandleSuperBuilder extends JavacAnnotationHandler<SuperBuilder> {
 			if (existingName.equals(fieldName) && !isTolerate(fieldNode, methodDecl)) return;
 		}
 		
-		String setterName = fluent ? fieldNode.getName() : HandlerUtil.buildAccessorName("set", fieldNode.getName());
+		String setterName = fluent ? paramName.toString() : HandlerUtil.buildAccessorName("set", paramName.toString());
 		
 		JavacTreeMaker maker = fieldNode.getTreeMaker();
 		
 		List<JCAnnotation> methodAnns = JavacHandlerUtil.findCopyableToSetterAnnotations(originalFieldNode);
-		JCMethodDecl newMethod = HandleSetter.createSetter(Flags.PUBLIC, deprecate, fieldNode, maker, setterName, nameOfSetFlag, returnType, returnStatement, source, methodAnns, annosOnParam);
+		JCMethodDecl newMethod = HandleSetter.createSetter(Flags.PUBLIC, deprecate, fieldNode, maker, setterName, paramName, nameOfSetFlag, returnType, returnStatement, source, methodAnns, annosOnParam);
 		
 		injectMethod(builderType, newMethod);
 	}
diff --git a/src/core/lombok/javac/handlers/JavacHandlerUtil.java b/src/core/lombok/javac/handlers/JavacHandlerUtil.java
index 6fa70ff3..76f3c1ad 100644
--- a/src/core/lombok/javac/handlers/JavacHandlerUtil.java
+++ b/src/core/lombok/javac/handlers/JavacHandlerUtil.java
@@ -1516,34 +1516,40 @@ public class JavacHandlerUtil {
 	 * variable name as message.
 	 */
 	public static JCStatement generateNullCheck(JavacTreeMaker maker, JavacNode variable, JavacNode source) {
-		return generateNullCheck(maker, variable, (JCVariableDecl) variable.get(), source);
+		return generateNullCheck(maker, (JCVariableDecl) variable.get(), source);
 	}
-
+	
 	/**
-	 * Generates a new statement that checks if the given variable is null, and if so, throws a configured exception with the
-	 * variable name as message. 
-	 * 
-	 * This is a special case method reserved for use when the provided declaration differs from the
-	 * variable's declaration, i.e. in a constructor or setter where the local parameter is named the same but with the prefix
-	 * stripped as a result of @Accessors.prefix.
+	 * Generates a new statement that checks if the given local is null, and if so, throws a configured exception with the
+	 * local variable name as message. 
 	 */
-	public static JCStatement generateNullCheck(JavacTreeMaker maker, JavacNode variable, JCVariableDecl varDecl, JavacNode source) {
+	public static JCStatement generateNullCheck(JavacTreeMaker maker, JCExpression typeNode, Name varName, JavacNode source) {
 		NullCheckExceptionType exceptionType = source.getAst().readConfiguration(ConfigurationKeys.NON_NULL_EXCEPTION_TYPE);
 		if (exceptionType == null) exceptionType = NullCheckExceptionType.NULL_POINTER_EXCEPTION;
 		
-		if (isPrimitive(varDecl.vartype)) return null;
-		Name fieldName = varDecl.name;
-		
-		JCLiteral message = maker.Literal(exceptionType.toExceptionMessage(fieldName.toString()));
+		if (isPrimitive(typeNode)) return null;
+		JCLiteral message = maker.Literal(exceptionType.toExceptionMessage(varName.toString()));
 		if (exceptionType == NullCheckExceptionType.ASSERTION) {
-			return maker.Assert(maker.Binary(CTC_NOT_EQUAL, maker.Ident(fieldName), maker.Literal(CTC_BOT, null)), message);
+			return maker.Assert(maker.Binary(CTC_NOT_EQUAL, maker.Ident(varName), maker.Literal(CTC_BOT, null)), message);
 		}
 		
-		JCExpression exType = genTypeRef(variable, exceptionType.getExceptionType());
+		JCExpression exType = genTypeRef(source, exceptionType.getExceptionType());
 		JCExpression exception = maker.NewClass(null, List.<JCExpression>nil(), exType, List.<JCExpression>of(message), null);
 		JCStatement throwStatement = maker.Throw(exception);
 		JCBlock throwBlock = maker.Block(0, List.of(throwStatement));
-		return maker.If(maker.Binary(CTC_EQUAL, maker.Ident(fieldName), maker.Literal(CTC_BOT, null)), throwBlock, null);
+		return maker.If(maker.Binary(CTC_EQUAL, maker.Ident(varName), maker.Literal(CTC_BOT, null)), throwBlock, null);
+	}
+	
+	/**
+	 * Generates a new statement that checks if the given variable is null, and if so, throws a configured exception with the
+	 * variable name as message. 
+	 * 
+	 * This is a special case method reserved for use when the provided declaration differs from the
+	 * variable's declaration, i.e. in a constructor or setter where the local parameter is named the same but with the prefix
+	 * stripped as a result of @Accessors.prefix.
+	 */
+	public static JCStatement generateNullCheck(JavacTreeMaker maker, JCVariableDecl varDecl, JavacNode source) {
+		return generateNullCheck(maker, varDecl.vartype, varDecl.name, source);
 	}
 	
 	/**