Examples with JCArrayTypeTree com.sun.tools.javac.tree.JCTree.JCArrayTypeTree used on opensource projects

Example 1 with JCArrayTypeTree

use of com.sun.tools.javac.tree.JCTree.JCArrayTypeTree in project lombok by rzwitserloot.

the class HandleBuilder method handle.

@Override
public void handle(AnnotationValues<Builder> annotation, JCAnnotation ast, JavacNode annotationNode) {
    Builder builderInstance = annotation.getInstance();
    // These exist just to support the 'old' lombok.experimental.Builder, which had these properties. lombok.Builder no longer has them.
    boolean fluent = toBoolean(annotation.getActualExpression("fluent"), true);
    boolean chain = toBoolean(annotation.getActualExpression("chain"), true);
    String builderMethodName = builderInstance.builderMethodName();
    String buildMethodName = builderInstance.buildMethodName();
    String builderClassName = builderInstance.builderClassName();
    String toBuilderMethodName = "toBuilder";
    boolean toBuilder = builderInstance.toBuilder();
    java.util.List<Name> typeArgsForToBuilder = null;
    if (builderMethodName == null)
        builderMethodName = "builder";
    if (buildMethodName == null)
        buildMethodName = "build";
    if (builderClassName == null)
        builderClassName = "";
    if (!checkName("builderMethodName", builderMethodName, annotationNode))
        return;
    if (!checkName("buildMethodName", buildMethodName, annotationNode))
        return;
    if (!builderClassName.isEmpty()) {
        if (!checkName("builderClassName", builderClassName, annotationNode))
            return;
    }
    @SuppressWarnings("deprecation") Class<? extends Annotation> oldExperimentalBuilder = lombok.experimental.Builder.class;
    deleteAnnotationIfNeccessary(annotationNode, Builder.class, oldExperimentalBuilder);
    JavacNode parent = annotationNode.up();
    java.util.List<BuilderFieldData> builderFields = new ArrayList<BuilderFieldData>();
    JCExpression returnType;
    List<JCTypeParameter> typeParams = List.nil();
    List<JCExpression> thrownExceptions = List.nil();
    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;
        JCClassDecl td = (JCClassDecl) tdParent.get();
        ListBuffer<JavacNode> allFields = new ListBuffer<JavacNode>();
        @SuppressWarnings("deprecation") boolean valuePresent = (hasAnnotation(lombok.Value.class, parent) || hasAnnotation(lombok.experimental.Value.class, parent));
        for (JavacNode fieldNode : HandleConstructor.findAllFields(tdParent)) {
            JCVariableDecl fd = (JCVariableDecl) fieldNode.get();
            // Value will only skip making a field final if it has an explicit @NonFinal annotation, so we check for that.
            if (fd.init != null && valuePresent && !hasAnnotation(NonFinal.class, fieldNode))
                continue;
            BuilderFieldData bfd = new BuilderFieldData();
            bfd.rawName = fd.name;
            bfd.name = removePrefixFromField(fieldNode);
            bfd.type = fd.vartype;
            bfd.singularData = getSingularData(fieldNode);
            addObtainVia(bfd, fieldNode);
            builderFields.add(bfd);
            allFields.append(fieldNode);
        }
        new HandleConstructor().generateConstructor(tdParent, AccessLevel.PACKAGE, List.<JCAnnotation>nil(), allFields.toList(), false, null, SkipIfConstructorExists.I_AM_BUILDER, annotationNode);
        returnType = namePlusTypeParamsToTypeReference(tdParent.getTreeMaker(), td.name, td.typarams);
        typeParams = td.typarams;
        thrownExceptions = List.nil();
        nameOfBuilderMethod = null;
        if (builderClassName.isEmpty())
            builderClassName = td.name.toString() + "Builder";
    } else if (fillParametersFrom != null && fillParametersFrom.getName().toString().equals("<init>")) {
        JCMethodDecl jmd = (JCMethodDecl) fillParametersFrom.get();
        if (!jmd.typarams.isEmpty()) {
            annotationNode.addError("@Builder is not supported on constructors with constructor type parameters.");
            return;
        }
        tdParent = parent.up();
        JCClassDecl td = (JCClassDecl) tdParent.get();
        returnType = namePlusTypeParamsToTypeReference(tdParent.getTreeMaker(), td.name, td.typarams);
        typeParams = td.typarams;
        thrownExceptions = jmd.thrown;
        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();
        isStatic = (jmd.mods.flags & Flags.STATIC) != 0;
        JCExpression fullReturnType = jmd.restype;
        returnType = fullReturnType;
        typeParams = jmd.typarams;
        thrownExceptions = jmd.thrown;
        nameOfBuilderMethod = jmd.name;
        if (returnType instanceof JCTypeApply) {
            returnType = ((JCTypeApply) returnType).clazz;
        }
        if (builderClassName.isEmpty()) {
            if (returnType instanceof JCFieldAccess) {
                builderClassName = ((JCFieldAccess) returnType).name.toString() + "Builder";
            } else if (returnType instanceof JCIdent) {
                Name n = ((JCIdent) returnType).name;
                for (JCTypeParameter tp : typeParams) {
                    if (tp.name.equals(n)) {
                        annotationNode.addError("@Builder requires specifying 'builderClassName' if used on methods with a type parameter as return type.");
                        return;
                    }
                }
                builderClassName = n.toString() + "Builder";
            } else if (returnType instanceof JCPrimitiveTypeTree) {
                builderClassName = returnType.toString() + "Builder";
                if (Character.isLowerCase(builderClassName.charAt(0))) {
                    builderClassName = Character.toTitleCase(builderClassName.charAt(0)) + builderClassName.substring(1);
                }
            } else {
                // This shouldn't happen.
                System.err.println("Lombok bug ID#20140614-1651: javac HandleBuilder: return type to name conversion failed: " + returnType.getClass());
                builderClassName = td.name.toString() + "Builder";
            }
        }
        if (toBuilder) {
            final String TO_BUILDER_NOT_SUPPORTED = "@Builder(toBuilder=true) is only supported if you return your own type.";
            if (returnType instanceof JCArrayTypeTree) {
                annotationNode.addError(TO_BUILDER_NOT_SUPPORTED);
                return;
            }
            Name simpleName;
            String pkg;
            List<JCExpression> tpOnRet = List.nil();
            if (fullReturnType instanceof JCTypeApply) {
                tpOnRet = ((JCTypeApply) fullReturnType).arguments;
            }
            if (returnType instanceof JCIdent) {
                simpleName = ((JCIdent) returnType).name;
                pkg = null;
            } else if (returnType instanceof JCFieldAccess) {
                JCFieldAccess jcfa = (JCFieldAccess) returnType;
                simpleName = jcfa.name;
                pkg = unpack(jcfa.selected);
                if (pkg.startsWith("ERR:")) {
                    String err = pkg.substring(4, pkg.indexOf("__ERR__"));
                    annotationNode.addError(err);
                    return;
                }
            } else {
                annotationNode.addError("Expected a (parameterized) type here instead of a " + returnType.getClass().getName());
                return;
            }
            if (pkg != null && !parent.getPackageDeclaration().equals(pkg)) {
                annotationNode.addError(TO_BUILDER_NOT_SUPPORTED);
                return;
            }
            if (!tdParent.getName().contentEquals(simpleName)) {
                annotationNode.addError(TO_BUILDER_NOT_SUPPORTED);
                return;
            }
            List<JCTypeParameter> tpOnMethod = jmd.typarams;
            List<JCTypeParameter> tpOnType = ((JCClassDecl) tdParent.get()).typarams;
            typeArgsForToBuilder = new ArrayList<Name>();
            for (JCTypeParameter tp : tpOnMethod) {
                int pos = -1;
                int idx = -1;
                for (JCExpression tOnRet : tpOnRet) {
                    idx++;
                    if (!(tOnRet instanceof JCIdent))
                        continue;
                    if (((JCIdent) tOnRet).name != tp.name)
                        continue;
                    pos = idx;
                }
                if (pos == -1 || tpOnType.size() <= pos) {
                    annotationNode.addError("@Builder(toBuilder=true) requires that each type parameter on the static method is part of the typeargs of the return value. Type parameter " + tp.name + " is not part of the return type.");
                    return;
                }
                typeArgsForToBuilder.add(tpOnType.get(pos).name);
            }
        }
    } else {
        annotationNode.addError("@Builder is only supported on types, constructors, and methods.");
        return;
    }
    if (fillParametersFrom != null) {
        for (JavacNode param : fillParametersFrom.down()) {
            if (param.getKind() != Kind.ARGUMENT)
                continue;
            BuilderFieldData bfd = new BuilderFieldData();
            JCVariableDecl raw = (JCVariableDecl) param.get();
            bfd.name = raw.name;
            bfd.rawName = raw.name;
            bfd.type = raw.vartype;
            bfd.singularData = getSingularData(param);
            addObtainVia(bfd, param);
            builderFields.add(bfd);
        }
    }
    JavacNode builderType = findInnerClass(tdParent, builderClassName);
    if (builderType == null) {
        builderType = makeBuilderClass(isStatic, annotationNode, 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) {
                SingularData sd = bfd.singularData;
                if (sd == null)
                    continue;
                JavacSingularizer singularizer = sd.getSingularizer();
                if (singularizer == null)
                    continue;
                if (singularizer.checkForAlreadyExistingNodesAndGenerateError(builderType, sd)) {
                    bfd.singularData = null;
                }
            }
        }
    }
    for (BuilderFieldData bfd : builderFields) {
        if (bfd.singularData != null && bfd.singularData.getSingularizer() != null) {
            if (bfd.singularData.getSingularizer().requiresCleaning()) {
                addCleaning = true;
                break;
            }
        }
        if (bfd.obtainVia != null) {
            if (bfd.obtainVia.field().isEmpty() == bfd.obtainVia.method().isEmpty()) {
                bfd.obtainViaNode.addError("The syntax is either @ObtainVia(field = \"fieldName\") or @ObtainVia(method = \"methodName\").");
                return;
            }
            if (bfd.obtainVia.method().isEmpty() && bfd.obtainVia.isStatic()) {
                bfd.obtainViaNode.addError("@ObtainVia(isStatic = true) is not valid unless 'method' has been set.");
                return;
            }
        }
    }
    generateBuilderFields(builderType, builderFields, ast);
    if (addCleaning) {
        JavacTreeMaker maker = builderType.getTreeMaker();
        JCVariableDecl uncleanField = maker.VarDef(maker.Modifiers(Flags.PRIVATE), builderType.toName("$lombokUnclean"), maker.TypeIdent(CTC_BOOLEAN), null);
        injectFieldAndMarkGenerated(builderType, uncleanField);
    }
    if (constructorExists(builderType) == MemberExistsResult.NOT_EXISTS) {
        JCMethodDecl cd = HandleConstructor.createConstructor(AccessLevel.PACKAGE, List.<JCAnnotation>nil(), builderType, List.<JavacNode>nil(), false, annotationNode);
        if (cd != null)
            injectMethod(builderType, cd);
    }
    for (BuilderFieldData bfd : builderFields) {
        makeSetterMethodsForBuilder(builderType, bfd, annotationNode, fluent, chain);
    }
    if (methodExists(buildMethodName, builderType, -1) == MemberExistsResult.NOT_EXISTS) {
        JCMethodDecl md = generateBuildMethod(isStatic, buildMethodName, nameOfBuilderMethod, returnType, builderFields, builderType, thrownExceptions, ast, addCleaning);
        if (md != null)
            injectMethod(builderType, md);
    }
    if (methodExists("toString", builderType, 0) == MemberExistsResult.NOT_EXISTS) {
        java.util.List<JavacNode> fieldNodes = new ArrayList<JavacNode>();
        for (BuilderFieldData bfd : builderFields) {
            fieldNodes.addAll(bfd.createdFields);
        }
        JCMethodDecl md = HandleToString.createToString(builderType, fieldNodes, true, false, FieldAccess.ALWAYS_FIELD, ast);
        if (md != null)
            injectMethod(builderType, md);
    }
    if (addCleaning)
        injectMethod(builderType, generateCleanMethod(builderFields, builderType, ast));
    if (methodExists(builderMethodName, tdParent, -1) == MemberExistsResult.NOT_EXISTS) {
        JCMethodDecl md = generateBuilderMethod(isStatic, builderMethodName, builderClassName, annotationNode, tdParent, typeParams);
        recursiveSetGeneratedBy(md, ast, annotationNode.getContext());
        if (md != null)
            injectMethod(tdParent, md);
    }
    if (toBuilder) {
        switch(methodExists(toBuilderMethodName, tdParent, 0)) {
            case EXISTS_BY_USER:
                annotationNode.addWarning("Not generating toBuilder() as it already exists.");
                return;
            case NOT_EXISTS:
                List<JCTypeParameter> tps = typeParams;
                if (typeArgsForToBuilder != null) {
                    ListBuffer<JCTypeParameter> lb = new ListBuffer<JCTypeParameter>();
                    JavacTreeMaker maker = tdParent.getTreeMaker();
                    for (Name n : typeArgsForToBuilder) {
                        lb.append(maker.TypeParameter(n, List.<JCExpression>nil()));
                    }
                    tps = lb.toList();
                }
                JCMethodDecl md = generateToBuilderMethod(toBuilderMethodName, builderClassName, tdParent, tps, builderFields, fluent, ast);
                if (md != null)
                    injectMethod(tdParent, md);
        }
    }
    recursiveSetGeneratedBy(builderType.get(), ast, annotationNode.getContext());
}

Example 2 with JCArrayTypeTree

use of com.sun.tools.javac.tree.JCTree.JCArrayTypeTree in project lombok by rzwitserloot.

the class HandleEqualsAndHashCode method createHashCode.

public JCMethodDecl createHashCode(JavacNode typeNode, List<JavacNode> fields, boolean callSuper, FieldAccess fieldAccess, JCTree source) {
    JavacTreeMaker maker = typeNode.getTreeMaker();
    JCAnnotation overrideAnnotation = maker.Annotation(genJavaLangTypeRef(typeNode, "Override"), List.<JCExpression>nil());
    JCModifiers mods = maker.Modifiers(Flags.PUBLIC, List.of(overrideAnnotation));
    JCExpression returnType = maker.TypeIdent(CTC_INT);
    ListBuffer<JCStatement> statements = new ListBuffer<JCStatement>();
    Name primeName = typeNode.toName(PRIME_NAME);
    Name resultName = typeNode.toName(RESULT_NAME);
    long finalFlag = JavacHandlerUtil.addFinalIfNeeded(0L, typeNode.getContext());
    /* final int PRIME = X; */
    {
        if (!fields.isEmpty() || callSuper) {
            statements.append(maker.VarDef(maker.Modifiers(finalFlag), primeName, maker.TypeIdent(CTC_INT), maker.Literal(HandlerUtil.primeForHashcode())));
        }
    }
    /* int result = 1; */
    {
        statements.append(maker.VarDef(maker.Modifiers(0), resultName, maker.TypeIdent(CTC_INT), maker.Literal(1)));
    }
    if (callSuper) {
        JCMethodInvocation callToSuper = maker.Apply(List.<JCExpression>nil(), maker.Select(maker.Ident(typeNode.toName("super")), typeNode.toName("hashCode")), List.<JCExpression>nil());
        statements.append(createResultCalculation(typeNode, callToSuper));
    }
    Name dollar = typeNode.toName("$");
    for (JavacNode fieldNode : fields) {
        JCExpression fType = getFieldType(fieldNode, fieldAccess);
        JCExpression fieldAccessor = createFieldAccessor(maker, fieldNode, fieldAccess);
        if (fType instanceof JCPrimitiveTypeTree) {
            switch(((JCPrimitiveTypeTree) fType).getPrimitiveTypeKind()) {
                case BOOLEAN:
                    /* this.fieldName ? X : Y */
                    statements.append(createResultCalculation(typeNode, maker.Parens(maker.Conditional(fieldAccessor, maker.Literal(HandlerUtil.primeForTrue()), maker.Literal(HandlerUtil.primeForFalse())))));
                    break;
                case LONG:
                    {
                        Name dollarFieldName = dollar.append(((JCVariableDecl) fieldNode.get()).name);
                        statements.append(maker.VarDef(maker.Modifiers(finalFlag), dollarFieldName, maker.TypeIdent(CTC_LONG), fieldAccessor));
                        statements.append(createResultCalculation(typeNode, longToIntForHashCode(maker, maker.Ident(dollarFieldName), maker.Ident(dollarFieldName))));
                    }
                    break;
                case FLOAT:
                    /* Float.floatToIntBits(this.fieldName) */
                    statements.append(createResultCalculation(typeNode, maker.Apply(List.<JCExpression>nil(), genJavaLangTypeRef(typeNode, "Float", "floatToIntBits"), List.of(fieldAccessor))));
                    break;
                case DOUBLE:
                    {
                        /* longToIntForHashCode(Double.doubleToLongBits(this.fieldName)) */
                        Name dollarFieldName = dollar.append(((JCVariableDecl) fieldNode.get()).name);
                        JCExpression init = maker.Apply(List.<JCExpression>nil(), genJavaLangTypeRef(typeNode, "Double", "doubleToLongBits"), List.of(fieldAccessor));
                        statements.append(maker.VarDef(maker.Modifiers(finalFlag), dollarFieldName, maker.TypeIdent(CTC_LONG), init));
                        statements.append(createResultCalculation(typeNode, longToIntForHashCode(maker, maker.Ident(dollarFieldName), maker.Ident(dollarFieldName))));
                    }
                    break;
                default:
                case BYTE:
                case SHORT:
                case INT:
                case CHAR:
                    /* just the field */
                    statements.append(createResultCalculation(typeNode, fieldAccessor));
                    break;
            }
        } else if (fType instanceof JCArrayTypeTree) {
            /* java.util.Arrays.deepHashCode(this.fieldName) //use just hashCode() for primitive arrays. */
            boolean multiDim = ((JCArrayTypeTree) fType).elemtype instanceof JCArrayTypeTree;
            boolean primitiveArray = ((JCArrayTypeTree) fType).elemtype instanceof JCPrimitiveTypeTree;
            boolean useDeepHC = multiDim || !primitiveArray;
            JCExpression hcMethod = chainDots(typeNode, "java", "util", "Arrays", useDeepHC ? "deepHashCode" : "hashCode");
            statements.append(createResultCalculation(typeNode, maker.Apply(List.<JCExpression>nil(), hcMethod, List.of(fieldAccessor))));
        } else /* objects */
        {
            /* final java.lang.Object $fieldName = this.fieldName; */
            /* ($fieldName == null ? NULL_PRIME : $fieldName.hashCode()) */
            Name dollarFieldName = dollar.append(((JCVariableDecl) fieldNode.get()).name);
            statements.append(maker.VarDef(maker.Modifiers(finalFlag), dollarFieldName, genJavaLangTypeRef(typeNode, "Object"), fieldAccessor));
            JCExpression hcCall = maker.Apply(List.<JCExpression>nil(), maker.Select(maker.Ident(dollarFieldName), typeNode.toName("hashCode")), List.<JCExpression>nil());
            JCExpression thisEqualsNull = maker.Binary(CTC_EQUAL, maker.Ident(dollarFieldName), maker.Literal(CTC_BOT, null));
            statements.append(createResultCalculation(typeNode, maker.Parens(maker.Conditional(thisEqualsNull, maker.Literal(HandlerUtil.primeForNull()), hcCall))));
        }
    }
    /* return result; */
    {
        statements.append(maker.Return(maker.Ident(resultName)));
    }
    JCBlock body = maker.Block(0, statements.toList());
    return recursiveSetGeneratedBy(maker.MethodDef(mods, typeNode.toName("hashCode"), returnType, List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null), source, typeNode.getContext());
}

Example 3 with JCArrayTypeTree

use of com.sun.tools.javac.tree.JCTree.JCArrayTypeTree in project lombok by rzwitserloot.

the class PrettyPrinter method visitNewArray.

@Override
public void visitNewArray(JCNewArray tree) {
    JCTree elem = tree.elemtype;
    int dims = 0;
    if (elem != null) {
        print("new ");
        while (elem instanceof JCArrayTypeTree) {
            dims++;
            elem = ((JCArrayTypeTree) elem).elemtype;
        }
        print(elem);
        for (JCExpression expr : tree.dims) {
            print("[");
            print(expr);
            print("]");
        }
    }
    for (int i = 0; i < dims; i++) print("[]");
    if (tree.elems != null) {
        if (elem != null)
            print("[] ");
        print("{");
        print(tree.elems, ", ");
        print("}");
    }
}

Example 4 with JCArrayTypeTree

use of com.sun.tools.javac.tree.JCTree.JCArrayTypeTree in project lombok by rzwitserloot.

the class JavacHandlerUtil method cloneType0.

private static JCExpression cloneType0(JavacTreeMaker maker, JCTree in) {
    if (in == null)
        return null;
    if (in instanceof JCPrimitiveTypeTree)
        return (JCExpression) in;
    if (in instanceof JCIdent) {
        return maker.Ident(((JCIdent) in).name);
    }
    if (in instanceof JCFieldAccess) {
        JCFieldAccess fa = (JCFieldAccess) in;
        return maker.Select(cloneType0(maker, fa.selected), fa.name);
    }
    if (in instanceof JCArrayTypeTree) {
        JCArrayTypeTree att = (JCArrayTypeTree) in;
        return maker.TypeArray(cloneType0(maker, att.elemtype));
    }
    if (in instanceof JCTypeApply) {
        JCTypeApply ta = (JCTypeApply) in;
        ListBuffer<JCExpression> lb = new ListBuffer<JCExpression>();
        for (JCExpression typeArg : ta.arguments) {
            lb.append(cloneType0(maker, typeArg));
        }
        return maker.TypeApply(cloneType0(maker, ta.clazz), lb.toList());
    }
    if (in instanceof JCWildcard) {
        JCWildcard w = (JCWildcard) in;
        JCExpression newInner = cloneType0(maker, w.inner);
        TypeBoundKind newKind;
        switch(w.getKind()) {
            case SUPER_WILDCARD:
                newKind = maker.TypeBoundKind(BoundKind.SUPER);
                break;
            case EXTENDS_WILDCARD:
                newKind = maker.TypeBoundKind(BoundKind.EXTENDS);
                break;
            default:
            case UNBOUNDED_WILDCARD:
                newKind = maker.TypeBoundKind(BoundKind.UNBOUND);
                break;
        }
        return maker.Wildcard(newKind, newInner);
    }
    // This is somewhat unsafe, but it's better than outright throwing an exception here. Returning null will just cause an exception down the pipeline.
    return (JCExpression) in;
}

Example 5 with JCArrayTypeTree

use of com.sun.tools.javac.tree.JCTree.JCArrayTypeTree in project lombok by rzwitserloot.

the class HandleToString method createToString.

static JCMethodDecl createToString(JavacNode typeNode, Collection<JavacNode> fields, boolean includeFieldNames, boolean callSuper, FieldAccess fieldAccess, JCTree source) {
    JavacTreeMaker maker = typeNode.getTreeMaker();
    JCAnnotation overrideAnnotation = maker.Annotation(genJavaLangTypeRef(typeNode, "Override"), List.<JCExpression>nil());
    JCModifiers mods = maker.Modifiers(Flags.PUBLIC, List.of(overrideAnnotation));
    JCExpression returnType = genJavaLangTypeRef(typeNode, "String");
    boolean first = true;
    String typeName = getTypeName(typeNode);
    String infix = ", ";
    String suffix = ")";
    String prefix;
    if (callSuper) {
        prefix = typeName + "(super=";
    } else if (fields.isEmpty()) {
        prefix = typeName + "()";
    } else if (includeFieldNames) {
        prefix = typeName + "(" + ((JCVariableDecl) fields.iterator().next().get()).name.toString() + "=";
    } else {
        prefix = typeName + "(";
    }
    JCExpression current = maker.Literal(prefix);
    if (callSuper) {
        JCMethodInvocation callToSuper = maker.Apply(List.<JCExpression>nil(), maker.Select(maker.Ident(typeNode.toName("super")), typeNode.toName("toString")), List.<JCExpression>nil());
        current = maker.Binary(CTC_PLUS, current, callToSuper);
        first = false;
    }
    for (JavacNode fieldNode : fields) {
        JCExpression expr;
        JCExpression fieldAccessor = createFieldAccessor(maker, fieldNode, fieldAccess);
        JCExpression fieldType = getFieldType(fieldNode, fieldAccess);
        // The distinction between primitive and object will be useful if we ever add a 'hideNulls' option.
        boolean fieldIsPrimitive = fieldType instanceof JCPrimitiveTypeTree;
        boolean fieldIsPrimitiveArray = fieldType instanceof JCArrayTypeTree && ((JCArrayTypeTree) fieldType).elemtype instanceof JCPrimitiveTypeTree;
        boolean fieldIsObjectArray = !fieldIsPrimitiveArray && fieldType instanceof JCArrayTypeTree;
        @SuppressWarnings("unused") boolean fieldIsObject = !fieldIsPrimitive && !fieldIsPrimitiveArray && !fieldIsObjectArray;
        if (fieldIsPrimitiveArray || fieldIsObjectArray) {
            JCExpression tsMethod = chainDots(typeNode, "java", "util", "Arrays", fieldIsObjectArray ? "deepToString" : "toString");
            expr = maker.Apply(List.<JCExpression>nil(), tsMethod, List.<JCExpression>of(fieldAccessor));
        } else
            expr = fieldAccessor;
        if (first) {
            current = maker.Binary(CTC_PLUS, current, expr);
            first = false;
            continue;
        }
        if (includeFieldNames) {
            current = maker.Binary(CTC_PLUS, current, maker.Literal(infix + fieldNode.getName() + "="));
        } else {
            current = maker.Binary(CTC_PLUS, current, maker.Literal(infix));
        }
        current = maker.Binary(CTC_PLUS, current, expr);
    }
    if (!first)
        current = maker.Binary(CTC_PLUS, current, maker.Literal(suffix));
    JCStatement returnStatement = maker.Return(current);
    JCBlock body = maker.Block(0, List.of(returnStatement));
    return recursiveSetGeneratedBy(maker.MethodDef(mods, typeNode.toName("toString"), returnType, List.<JCTypeParameter>nil(), List.<JCVariableDecl>nil(), List.<JCExpression>nil(), body, null), source, typeNode.getContext());
}