org.eclipse.jdt/org.eclipse.jdt.core/3.20.0 : org/eclipse/jdt/internal/core/dom/NaiveASTFlattener.java

NaiveASTFlattener
http://www.eclipse.org/jdt: Java Development Tools Core (Eclipse Foundation)
Eclipse Public License - v 2.0
Copyright (c) 2000, 2019 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2000, 2019 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.core.dom;

import java.util.Iterator;
import java.util.List;

import org.eclipse.jdt.core.dom.*;
import org.eclipse.jdt.internal.compiler.parser.ScannerHelper;

Internal AST visitor for serializing an AST in a quick and dirty fashion.
For various reasons the resulting string is not necessarily legal
Java code; and even if it is legal Java code, it is not necessarily the string
that corresponds to the given AST. Although useless for most purposes, it's
fine for generating debug print strings.

Example usage:

   NaiveASTFlattener p = new NaiveASTFlattener();
   node.accept(p);
   String result = p.getResult();


Call the reset method to clear the previous result before reusing an
existing instance.

Since: 2.0/**
 * Internal AST visitor for serializing an AST in a quick and dirty fashion.
 * For various reasons the resulting string is not necessarily legal
 * Java code; and even if it is legal Java code, it is not necessarily the string
 * that corresponds to the given AST. Although useless for most purposes, it's
 * fine for generating debug print strings.
 * <p>
 * Example usage:
 * <code>
 * <pre>
 *    NaiveASTFlattener p = new NaiveASTFlattener();
 *    node.accept(p);
 *    String result = p.getResult();
 * </pre>
 * </code>
 * Call the <code>reset</code> method to clear the previous result before reusing an
 * existing instance.
 * </p>
 *
 * @since 2.0
 */
@SuppressWarnings("rawtypes")
public class NaiveASTFlattener extends ASTVisitor {
	Internal synonym for AST.JLS2. Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link AST#JLS2}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private static final int JLS2 = AST.JLS2;
	
	Internal synonym for AST.JLS3. Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link AST#JLS3}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private static final int JLS3 = AST.JLS3;

	Internal synonym for AST.JLS4. Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.10/**
	 * Internal synonym for {@link AST#JLS4}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.10
	 */
	private static final int JLS4 = AST.JLS4;

	Internal synonym for AST.JLS8. Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.14/**
	 * Internal synonym for {@link AST#JLS8}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.14
	 */
	private static final int JLS8 = AST.JLS8;

	Internal synonym for AST.JLS9. Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.14/**
	 * Internal synonym for {@link AST#JLS9}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.14
	 */
	private static final int JLS9 = AST.JLS9;
	
	The string buffer into which the serialized representation of the AST is
written.
/**
	 * The string buffer into which the serialized representation of the AST is
	 * written.
	 */
	protected StringBuffer buffer;

	private int indent = 0;

	Creates a new AST printer.
/**
	 * Creates a new AST printer.
	 */
	public NaiveASTFlattener() {
		this.buffer = new StringBuffer();
	}

	Internal synonym for ClassInstanceCreation.getName(). Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link ClassInstanceCreation#getName()}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private Name getName(ClassInstanceCreation node) {
		return node.getName();
	}

	Returns the string accumulated in the visit.
Returns: the serialized/**
	 * Returns the string accumulated in the visit.
	 *
	 * @return the serialized
	 */
	public String getResult() {
		return this.buffer.toString();
	}

	Internal synonym for MethodDeclaration.getReturnType(). Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link MethodDeclaration#getReturnType()}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private static Type getReturnType(MethodDeclaration node) {
		return node.getReturnType();
	}

	Internal synonym for TypeDeclaration.getSuperclass(). Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link TypeDeclaration#getSuperclass()}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private static Name getSuperclass(TypeDeclaration node) {
		return node.getSuperclass();
	}

	Internal synonym for TypeDeclarationStatement.getTypeDeclaration(). Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link TypeDeclarationStatement#getTypeDeclaration()}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private static TypeDeclaration getTypeDeclaration(TypeDeclarationStatement node) {
		return node.getTypeDeclaration();
	}

	Internal synonym for MethodDeclaration.thrownExceptions(). Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.10/**
	 * Internal synonym for {@link MethodDeclaration#thrownExceptions()}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.10
	 */
	private static List thrownExceptions(MethodDeclaration node) {
		return node.thrownExceptions();
	}

	void printIndent() {
		for (int i = 0; i < this.indent; i++)
			this.buffer.append("  "); //$NON-NLS-1$
	}

	Appends the text representation of the given modifier flags, followed by a single space.
Used for JLS2 modifiers.
Params: modifiers – the modifier flags/**
	 * Appends the text representation of the given modifier flags, followed by a single space.
	 * Used for JLS2 modifiers.
	 *
	 * @param modifiers the modifier flags
	 */
	void printModifiers(int modifiers) {
		if (Modifier.isPublic(modifiers)) {
			this.buffer.append("public ");//$NON-NLS-1$
		}
		if (Modifier.isProtected(modifiers)) {
			this.buffer.append("protected ");//$NON-NLS-1$
		}
		if (Modifier.isPrivate(modifiers)) {
			this.buffer.append("private ");//$NON-NLS-1$
		}
		if (Modifier.isStatic(modifiers)) {
			this.buffer.append("static ");//$NON-NLS-1$
		}
		if (Modifier.isAbstract(modifiers)) {
			this.buffer.append("abstract ");//$NON-NLS-1$
		}
		if (Modifier.isFinal(modifiers)) {
			this.buffer.append("final ");//$NON-NLS-1$
		}
		if (Modifier.isSynchronized(modifiers)) {
			this.buffer.append("synchronized ");//$NON-NLS-1$
		}
		if (Modifier.isVolatile(modifiers)) {
			this.buffer.append("volatile ");//$NON-NLS-1$
		}
		if (Modifier.isNative(modifiers)) {
			this.buffer.append("native ");//$NON-NLS-1$
		}
		if (Modifier.isStrictfp(modifiers)) {
			this.buffer.append("strictfp ");//$NON-NLS-1$
		}
		if (Modifier.isTransient(modifiers)) {
			this.buffer.append("transient ");//$NON-NLS-1$
		}
	}

	Appends the text representation of the given modifier flags, followed by a single space.
Used for 3.0 modifiers and annotations.
Params: ext – the list of modifier and annotation nodes
(element type: IExtendedModifiers)/**
	 * Appends the text representation of the given modifier flags, followed by a single space.
	 * Used for 3.0 modifiers and annotations.
	 *
	 * @param ext the list of modifier and annotation nodes
	 * (element type: <code>IExtendedModifiers</code>)
	 */
	void printModifiers(List ext) {
		for (Iterator it = ext.iterator(); it.hasNext(); ) {
			ASTNode p = (ASTNode) it.next();
			p.accept(this);
			this.buffer.append(" ");//$NON-NLS-1$
		}
	}

	private void printTypes(List<Type> types, String prefix) {
		if (types.size() > 0) {
			this.buffer.append(" " + prefix + " ");//$NON-NLS-1$ //$NON-NLS-2$
			Type type = types.get(0);
			type.accept(this);
			for (int i = 1, l = types.size(); i < l; ++i) {
				this.buffer.append(","); //$NON-NLS-1$
				type = types.get(0);
				type.accept(this);
			}
		}
	}

	reference node helper function that is common to all
the difference reference nodes.
Params: typeArguments – list of type arguments/**
	 * reference node helper function that is common to all
	 * the difference reference nodes.
	 *
	 * @param typeArguments list of type arguments
	 */
	private void visitReferenceTypeArguments(List typeArguments) {
		this.buffer.append("::");//$NON-NLS-1$
		if (!typeArguments.isEmpty()) {
			this.buffer.append('<');
			for (Iterator it = typeArguments.iterator(); it.hasNext(); ) {
				Type t = (Type) it.next();
				t.accept(this);
				if (it.hasNext()) {
					this.buffer.append(',');
				}
			}
			this.buffer.append('>');
		}
	}
	
	private void visitTypeAnnotations(AnnotatableType node) {
		if (node.getAST().apiLevel() >= JLS8) {
			visitAnnotationsList(node.annotations());
		}
	}

	private void visitAnnotationsList(List annotations) {
		for (Iterator it = annotations.iterator(); it.hasNext(); ) {
			Annotation annotation = (Annotation) it.next();
			annotation.accept(this);
			this.buffer.append(' ');
		}
	}
	
	Resets this printer so that it can be used again.
/**
	 * Resets this printer so that it can be used again.
	 */
	public void reset() {
		this.buffer.setLength(0);
	}

	Internal synonym for TypeDeclaration.superInterfaces(). Use to alleviate deprecation warnings. 
Deprecated: 
Since: 3.4/**
	 * Internal synonym for {@link TypeDeclaration#superInterfaces()}. Use to alleviate
	 * deprecation warnings.
	 * @deprecated
	 * @since 3.4
	 */
	private List superInterfaces(TypeDeclaration node) {
		return node.superInterfaces();
	}

	@Override
	public boolean visit(AnnotationTypeDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printIndent();
		printModifiers(node.modifiers());
		this.buffer.append("@interface ");//$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append(" {");//$NON-NLS-1$
		for (Iterator it = node.bodyDeclarations().iterator(); it.hasNext(); ) {
			BodyDeclaration d = (BodyDeclaration) it.next();
			d.accept(this);
		}
		this.buffer.append("}\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(AnnotationTypeMemberDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printIndent();
		printModifiers(node.modifiers());
		node.getType().accept(this);
		this.buffer.append(" ");//$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append("()");//$NON-NLS-1$
		if (node.getDefault() != null) {
			this.buffer.append(" default ");//$NON-NLS-1$
			node.getDefault().accept(this);
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(AnonymousClassDeclaration node) {
		this.buffer.append("{\n");//$NON-NLS-1$
		this.indent++;
		for (Iterator it = node.bodyDeclarations().iterator(); it.hasNext(); ) {
			BodyDeclaration b = (BodyDeclaration) it.next();
			b.accept(this);
		}
		this.indent--;
		printIndent();
		this.buffer.append("}\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ArrayAccess node) {
		node.getArray().accept(this);
		this.buffer.append("[");//$NON-NLS-1$
		node.getIndex().accept(this);
		this.buffer.append("]");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ArrayCreation node) {
		this.buffer.append("new ");//$NON-NLS-1$
		ArrayType at = node.getType();
		int dims = at.getDimensions();
		Type elementType = at.getElementType();
		elementType.accept(this);
		for (Iterator it = node.dimensions().iterator(); it.hasNext(); ) {
			this.buffer.append("[");//$NON-NLS-1$
			Expression e = (Expression) it.next();
			e.accept(this);
			this.buffer.append("]");//$NON-NLS-1$
			dims--;
		}
		// add empty "[]" for each extra array dimension
		for (int i= 0; i < dims; i++) {
			this.buffer.append("[]");//$NON-NLS-1$
		}
		if (node.getInitializer() != null) {
			node.getInitializer().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(ArrayInitializer node) {
		this.buffer.append("{");//$NON-NLS-1$
		for (Iterator it = node.expressions().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append("}");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ArrayType node) {
		if (node.getAST().apiLevel() < JLS8) {
			visitComponentType(node);
			this.buffer.append("[]");//$NON-NLS-1$
		} else {
			node.getElementType().accept(this);
			List dimensions = node.dimensions();
			int size = dimensions.size();
			for (int i = 0; i < size; i++) {
				Dimension aDimension = (Dimension) dimensions.get(i);
				aDimension.accept(this);
			}
		}
		return false;
	}

	@Override
	public boolean visit(AssertStatement node) {
		printIndent();
		this.buffer.append("assert ");//$NON-NLS-1$
		node.getExpression().accept(this);
		if (node.getMessage() != null) {
			this.buffer.append(" : ");//$NON-NLS-1$
			node.getMessage().accept(this);
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(Assignment node) {
		node.getLeftHandSide().accept(this);
		this.buffer.append(node.getOperator().toString());
		node.getRightHandSide().accept(this);
		return false;
	}

	@Override
	public boolean visit(Block node) {
		this.buffer.append("{\n");//$NON-NLS-1$
		this.indent++;
		for (Iterator it = node.statements().iterator(); it.hasNext(); ) {
			Statement s = (Statement) it.next();
			s.accept(this);
		}
		this.indent--;
		printIndent();
		this.buffer.append("}\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(BlockComment node) {
		printIndent();
		this.buffer.append("/* */");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(BooleanLiteral node) {
		if (node.booleanValue() == true) {
			this.buffer.append("true");//$NON-NLS-1$
		} else {
			this.buffer.append("false");//$NON-NLS-1$
		}
		return false;
	}

	@Override
	public boolean visit(BreakStatement node) {
		printIndent();
		this.buffer.append("break");//$NON-NLS-1$
		if (node.getLabel() != null) {
			this.buffer.append(" ");//$NON-NLS-1$
			node.getLabel().accept(this);
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(CastExpression node) {
		this.buffer.append("(");//$NON-NLS-1$
		node.getType().accept(this);
		this.buffer.append(")");//$NON-NLS-1$
		node.getExpression().accept(this);
		return false;
	}

	@Override
	public boolean visit(CatchClause node) {
		this.buffer.append("catch (");//$NON-NLS-1$
		node.getException().accept(this);
		this.buffer.append(") ");//$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(CharacterLiteral node) {
		this.buffer.append(node.getEscapedValue());
		return false;
	}

	@Override
	public boolean visit(ClassInstanceCreation node) {
		if (node.getExpression() != null) {
			node.getExpression().accept(this);
			this.buffer.append(".");//$NON-NLS-1$
		}
		this.buffer.append("new ");//$NON-NLS-1$
		if (node.getAST().apiLevel() == JLS2) {
			getName(node).accept(this);
		}
		if (node.getAST().apiLevel() >= JLS3) {
			if (!node.typeArguments().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeArguments().iterator(); it.hasNext(); ) {
					Type t = (Type) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
			node.getType().accept(this);
		}
		this.buffer.append("(");//$NON-NLS-1$
		for (Iterator it = node.arguments().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(")");//$NON-NLS-1$
		if (node.getAnonymousClassDeclaration() != null) {
			node.getAnonymousClassDeclaration().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(CompilationUnit node) {
		if (node.getAST().apiLevel() >= JLS9) {
			if (node.getModule() != null) {
				node.getModule().accept(this);
			}
		}
		if (node.getPackage() != null) {
			node.getPackage().accept(this);
		}
		for (Iterator it = node.imports().iterator(); it.hasNext(); ) {
			ImportDeclaration d = (ImportDeclaration) it.next();
			d.accept(this);
		}
		for (Iterator it = node.types().iterator(); it.hasNext(); ) {
			AbstractTypeDeclaration d = (AbstractTypeDeclaration) it.next();
			d.accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(ConditionalExpression node) {
		node.getExpression().accept(this);
		this.buffer.append(" ? ");//$NON-NLS-1$
		node.getThenExpression().accept(this);
		this.buffer.append(" : ");//$NON-NLS-1$
		node.getElseExpression().accept(this);
		return false;
	}

	@Override
	public boolean visit(ConstructorInvocation node) {
		printIndent();
		if (node.getAST().apiLevel() >= JLS3) {
			if (!node.typeArguments().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeArguments().iterator(); it.hasNext(); ) {
					Type t = (Type) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
		}
		this.buffer.append("this(");//$NON-NLS-1$
		for (Iterator it = node.arguments().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(");\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ContinueStatement node) {
		printIndent();
		this.buffer.append("continue");//$NON-NLS-1$
		if (node.getLabel() != null) {
			this.buffer.append(" ");//$NON-NLS-1$
			node.getLabel().accept(this);
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}
	
	@Override
	public boolean visit(CreationReference node) {
		node.getType().accept(this);
		visitReferenceTypeArguments(node.typeArguments());
		this.buffer.append("new");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(Dimension node) {
		List annotations = node.annotations();
		if (annotations.size() > 0)
			this.buffer.append(' ');
		visitAnnotationsList(annotations);
		this.buffer.append("[]"); //$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(DoStatement node) {
		printIndent();
		this.buffer.append("do ");//$NON-NLS-1$
		node.getBody().accept(this);
		this.buffer.append(" while (");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(");\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(EmptyStatement node) {
		printIndent();
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(EnhancedForStatement node) {
		printIndent();
		this.buffer.append("for (");//$NON-NLS-1$
		node.getParameter().accept(this);
		this.buffer.append(" : ");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(") ");//$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(EnumConstantDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printIndent();
		printModifiers(node.modifiers());
		node.getName().accept(this);
		if (!node.arguments().isEmpty()) {
			this.buffer.append("(");//$NON-NLS-1$
			for (Iterator it = node.arguments().iterator(); it.hasNext(); ) {
				Expression e = (Expression) it.next();
				e.accept(this);
				if (it.hasNext()) {
					this.buffer.append(",");//$NON-NLS-1$
				}
			}
			this.buffer.append(")");//$NON-NLS-1$
		}
		if (node.getAnonymousClassDeclaration() != null) {
			node.getAnonymousClassDeclaration().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(EnumDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printIndent();
		printModifiers(node.modifiers());
		this.buffer.append("enum ");//$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append(" ");//$NON-NLS-1$
		if (!node.superInterfaceTypes().isEmpty()) {
			this.buffer.append("implements ");//$NON-NLS-1$
			for (Iterator it = node.superInterfaceTypes().iterator(); it.hasNext(); ) {
				Type t = (Type) it.next();
				t.accept(this);
				if (it.hasNext()) {
					this.buffer.append(", ");//$NON-NLS-1$
				}
			}
			this.buffer.append(" ");//$NON-NLS-1$
		}
		this.buffer.append("{");//$NON-NLS-1$
		for (Iterator it = node.enumConstants().iterator(); it.hasNext(); ) {
			EnumConstantDeclaration d = (EnumConstantDeclaration) it.next();
			d.accept(this);
			// enum constant declarations do not include punctuation
			if (it.hasNext()) {
				// enum constant declarations are separated by commas
				this.buffer.append(", ");//$NON-NLS-1$
			}
		}
		if (!node.bodyDeclarations().isEmpty()) {
			this.buffer.append("; ");//$NON-NLS-1$
			for (Iterator it = node.bodyDeclarations().iterator(); it.hasNext(); ) {
				BodyDeclaration d = (BodyDeclaration) it.next();
				d.accept(this);
				// other body declarations include trailing punctuation
			}
		}
		this.buffer.append("}\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ExportsDirective node) {
		return visit(node, "exports"); //$NON-NLS-1$
	}

	@Override
	public boolean visit(ExpressionMethodReference node) {
		node.getExpression().accept(this);
		visitReferenceTypeArguments(node.typeArguments());
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(ExpressionStatement node) {
		printIndent();
		node.getExpression().accept(this);
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(FieldAccess node) {
		node.getExpression().accept(this);
		this.buffer.append(".");//$NON-NLS-1$
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(FieldDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printIndent();
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
		}
		node.getType().accept(this);
		this.buffer.append(" ");//$NON-NLS-1$
		for (Iterator it = node.fragments().iterator(); it.hasNext(); ) {
			VariableDeclarationFragment f = (VariableDeclarationFragment) it.next();
			f.accept(this);
			if (it.hasNext()) {
				this.buffer.append(", ");//$NON-NLS-1$
			}
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ForStatement node) {
		printIndent();
		this.buffer.append("for (");//$NON-NLS-1$
		for (Iterator it = node.initializers().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) this.buffer.append(", ");//$NON-NLS-1$
		}
		this.buffer.append("; ");//$NON-NLS-1$
		if (node.getExpression() != null) {
			node.getExpression().accept(this);
		}
		this.buffer.append("; ");//$NON-NLS-1$
		for (Iterator it = node.updaters().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) this.buffer.append(", ");//$NON-NLS-1$
		}
		this.buffer.append(") ");//$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(IfStatement node) {
		printIndent();
		this.buffer.append("if (");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(") ");//$NON-NLS-1$
		node.getThenStatement().accept(this);
		if (node.getElseStatement() != null) {
			this.buffer.append(" else ");//$NON-NLS-1$
			node.getElseStatement().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(ImportDeclaration node) {
		printIndent();
		this.buffer.append("import ");//$NON-NLS-1$
		if (node.getAST().apiLevel() >= JLS3) {
			if (node.isStatic()) {
				this.buffer.append("static ");//$NON-NLS-1$
			}
		}
		node.getName().accept(this);
		if (node.isOnDemand()) {
			this.buffer.append(".*");//$NON-NLS-1$
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(InfixExpression node) {
		node.getLeftOperand().accept(this);
		this.buffer.append(' ');  // for cases like x= i - -1; or x= i++ + ++i;
		this.buffer.append(node.getOperator().toString());
		this.buffer.append(' ');
		node.getRightOperand().accept(this);
		final List extendedOperands = node.extendedOperands();
		if (extendedOperands.size() != 0) {
			this.buffer.append(' ');
			for (Iterator it = extendedOperands.iterator(); it.hasNext(); ) {
				this.buffer.append(node.getOperator().toString()).append(' ');
				Expression e = (Expression) it.next();
				e.accept(this);
			}
		}
		return false;
	}

	@Override
	public boolean visit(Initializer node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
		}
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(InstanceofExpression node) {
		node.getLeftOperand().accept(this);
		this.buffer.append(" instanceof ");//$NON-NLS-1$
		node.getRightOperand().accept(this);
		return false;
	}

	@Override
	public boolean visit(IntersectionType node) {
		for (Iterator it = node.types().iterator(); it.hasNext(); ) {
			Type t = (Type) it.next();
			t.accept(this);
			if (it.hasNext()) {
				this.buffer.append(" & "); //$NON-NLS-1$
			}
		}
		return false;
	}

	@Override
	public boolean visit(Javadoc node) {
		printIndent();
		this.buffer.append("/** ");//$NON-NLS-1$
		for (Iterator it = node.tags().iterator(); it.hasNext(); ) {
			ASTNode e = (ASTNode) it.next();
			e.accept(this);
		}
		this.buffer.append("\n */\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(LabeledStatement node) {
		printIndent();
		node.getLabel().accept(this);
		this.buffer.append(": ");//$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(LambdaExpression node) {
		boolean hasParentheses = node.hasParentheses();
		if (hasParentheses)
			this.buffer.append('(');
		for (Iterator it = node.parameters().iterator(); it.hasNext(); ) {
			VariableDeclaration v = (VariableDeclaration) it.next();
			v.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		if (hasParentheses)
			this.buffer.append(')');
		this.buffer.append(" -> "); //$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(LineComment node) {
		this.buffer.append("//\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(MarkerAnnotation node) {
		this.buffer.append("@");//$NON-NLS-1$
		node.getTypeName().accept(this);
		return false;
	}

	@Override
	public boolean visit(MemberRef node) {
		if (node.getQualifier() != null) {
			node.getQualifier().accept(this);
		}
		this.buffer.append("#");//$NON-NLS-1$
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(MemberValuePair node) {
		node.getName().accept(this);
		this.buffer.append("=");//$NON-NLS-1$
		node.getValue().accept(this);
		return false;
	}

	@Override
	public boolean visit(MethodDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printIndent();
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
			if (!node.typeParameters().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeParameters().iterator(); it.hasNext(); ) {
					TypeParameter t = (TypeParameter) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
		}
		if (!node.isConstructor()) {
			if (node.getAST().apiLevel() == JLS2) {
				getReturnType(node).accept(this);
			} else {
				if (node.getReturnType2() != null) {
					node.getReturnType2().accept(this);
				} else {
					// methods really ought to have a return type
					this.buffer.append("void");//$NON-NLS-1$
				}
			}
			this.buffer.append(" ");//$NON-NLS-1$
		}
		node.getName().accept(this);
		this.buffer.append("(");//$NON-NLS-1$
		if (node.getAST().apiLevel() >= JLS8) {
			Type receiverType = node.getReceiverType();
			if (receiverType != null) {
				receiverType.accept(this);
				this.buffer.append(' ');
				SimpleName qualifier = node.getReceiverQualifier();
				if (qualifier != null) {
					qualifier.accept(this);
					this.buffer.append('.');
				}
				this.buffer.append("this"); //$NON-NLS-1$
				if (node.parameters().size() > 0) {
					this.buffer.append(',');
				}
			}
		}
		for (Iterator it = node.parameters().iterator(); it.hasNext(); ) {
			SingleVariableDeclaration v = (SingleVariableDeclaration) it.next();
			v.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(")");//$NON-NLS-1$
		int size = node.getExtraDimensions();
		if (node.getAST().apiLevel() >= JLS8) {
			List dimensions = node.extraDimensions();
			for (int i = 0; i < size; i++) {
				visit((Dimension) dimensions.get(i));
			}
		} else {
			for (int i = 0; i < size; i++) {
				this.buffer.append("[]"); //$NON-NLS-1$
			}
		}
		if (node.getAST().apiLevel() < JLS8) {
			if (!thrownExceptions(node).isEmpty()) {
				this.buffer.append(" throws ");//$NON-NLS-1$
				for (Iterator it = thrownExceptions(node).iterator(); it.hasNext(); ) {
					Name n = (Name) it.next();
					n.accept(this);
					if (it.hasNext()) {
						this.buffer.append(", ");//$NON-NLS-1$
					}
				}				
				this.buffer.append(" ");//$NON-NLS-1$
			} 
		} else {
			if (!node.thrownExceptionTypes().isEmpty()) {				
				this.buffer.append(" throws ");//$NON-NLS-1$
				for (Iterator it = node.thrownExceptionTypes().iterator(); it.hasNext(); ) {
					Type n = (Type) it.next();
					n.accept(this);
					if (it.hasNext()) {
						this.buffer.append(", ");//$NON-NLS-1$
					}
				}	
				this.buffer.append(" ");//$NON-NLS-1$				
			}
		}
		if (node.getBody() == null) {
			this.buffer.append(";\n");//$NON-NLS-1$
		} else {
			node.getBody().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(MethodInvocation node) {
		if (node.getExpression() != null) {
			node.getExpression().accept(this);
			this.buffer.append(".");//$NON-NLS-1$
		}
		if (node.getAST().apiLevel() >= JLS3) {
			if (!node.typeArguments().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeArguments().iterator(); it.hasNext(); ) {
					Type t = (Type) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
		}
		node.getName().accept(this);
		this.buffer.append("(");//$NON-NLS-1$
		for (Iterator it = node.arguments().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(")");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(MethodRef node) {
		if (node.getQualifier() != null) {
			node.getQualifier().accept(this);
		}
		this.buffer.append("#");//$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append("(");//$NON-NLS-1$
		for (Iterator it = node.parameters().iterator(); it.hasNext(); ) {
			MethodRefParameter e = (MethodRefParameter) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(")");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(MethodRefParameter node) {
		node.getType().accept(this);
		if (node.getAST().apiLevel() >= JLS3) {
			if (node.isVarargs()) {
				this.buffer.append("...");//$NON-NLS-1$
			}
		}
		if (node.getName() != null) {
			this.buffer.append(" ");//$NON-NLS-1$
			node.getName().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(Modifier node) {
		this.buffer.append(node.getKeyword().toString());
		return false;
	}

	@Override
	public boolean visit(ModuleDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		printModifiers(node.annotations());
		if (node.isOpen())
			this.buffer.append("open "); //$NON-NLS-1$
		this.buffer.append("module"); //$NON-NLS-1$
		this.buffer.append(" "); //$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append(" {\n"); //$NON-NLS-1$
		this.indent++;
		for (ModuleDirective stmt : (List<ModuleDirective>)node.moduleStatements()) {
			stmt.accept(this);
		}
		this.indent--;
		this.buffer.append("}"); //$NON-NLS-1$
		return false;
	}

	@Override
	/*
	 * @see ASTVisitor#visit(ModuleModifier)
	 * @since 3.14
	 */
	public boolean visit(ModuleModifier node) {
		this.buffer.append(node.getKeyword().toString());
		return false;
	}

	private boolean visit(ModulePackageAccess node, String keyword) {
		printIndent();
		this.buffer.append(keyword);
		this.buffer.append(" ");//$NON-NLS-1$
		node.getName().accept(this);
		printTypes(node.modules(), "to"); //$NON-NLS-1$
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(NameQualifiedType node) {
		node.getQualifier().accept(this);
		this.buffer.append('.');
		visitTypeAnnotations(node);
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(NormalAnnotation node) {
		this.buffer.append("@");//$NON-NLS-1$
		node.getTypeName().accept(this);
		this.buffer.append("(");//$NON-NLS-1$
		for (Iterator it = node.values().iterator(); it.hasNext(); ) {
			MemberValuePair p = (MemberValuePair) it.next();
			p.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(")");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(NullLiteral node) {
		this.buffer.append("null");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(NumberLiteral node) {
		this.buffer.append(node.getToken());
		return false;
	}

	@Override
	public boolean visit(OpensDirective node) {
		return visit(node, "opens"); //$NON-NLS-1$
	}

	@Override
	public boolean visit(PackageDeclaration node) {
		if (node.getAST().apiLevel() >= JLS3) {
			if (node.getJavadoc() != null) {
				node.getJavadoc().accept(this);
			}
			for (Iterator it = node.annotations().iterator(); it.hasNext(); ) {
				Annotation p = (Annotation) it.next();
				p.accept(this);
				this.buffer.append(" ");//$NON-NLS-1$
			}
		}
		printIndent();
		this.buffer.append("package ");//$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ParameterizedType node) {
		node.getType().accept(this);
		this.buffer.append("<");//$NON-NLS-1$
		for (Iterator it = node.typeArguments().iterator(); it.hasNext(); ) {
			Type t = (Type) it.next();
			t.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(">");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ParenthesizedExpression node) {
		this.buffer.append("(");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(")");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(PostfixExpression node) {
		node.getOperand().accept(this);
		this.buffer.append(node.getOperator().toString());
		return false;
	}

	@Override
	public boolean visit(PrefixExpression node) {
		this.buffer.append(node.getOperator().toString());
		node.getOperand().accept(this);
		return false;
	}

	@Override
	public boolean visit(PrimitiveType node) {
		visitTypeAnnotations(node);
		this.buffer.append(node.getPrimitiveTypeCode().toString());
		return false;
	}

	@Override
	public boolean visit(ProvidesDirective node) {
		printIndent();
		this.buffer.append("provides");//$NON-NLS-1$
		this.buffer.append(" ");//$NON-NLS-1$
		node.getName().accept(this);
		printTypes(node.implementations(), "with"); //$NON-NLS-1$
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(QualifiedName node) {
		node.getQualifier().accept(this);
		this.buffer.append(".");//$NON-NLS-1$
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(QualifiedType node) {
		node.getQualifier().accept(this);
		this.buffer.append(".");//$NON-NLS-1$
		visitTypeAnnotations(node);
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(RequiresDirective node) {
		printIndent();
		this.buffer.append("requires");//$NON-NLS-1$
		this.buffer.append(" ");//$NON-NLS-1$
		printModifiers(node.modifiers());
		node.getName().accept(this);
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ReturnStatement node) {
		printIndent();
		this.buffer.append("return");//$NON-NLS-1$
		if (node.getExpression() != null) {
			this.buffer.append(" ");//$NON-NLS-1$
			node.getExpression().accept(this);
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(SimpleName node) {
		this.buffer.append(node.getIdentifier());
		return false;
	}

	@Override
	public boolean visit(SimpleType node) {
		visitTypeAnnotations(node);
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(SingleMemberAnnotation node) {
		this.buffer.append("@");//$NON-NLS-1$
		node.getTypeName().accept(this);
		this.buffer.append("(");//$NON-NLS-1$
		node.getValue().accept(this);
		this.buffer.append(")");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(SingleVariableDeclaration node) {
		printIndent();
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
		}
		node.getType().accept(this);
		if (node.getAST().apiLevel() >= JLS3) {
			if (node.isVarargs()) {
				if (node.getAST().apiLevel() >= JLS8) {
					List annotations = node.varargsAnnotations();
					if (annotations.size() > 0) {
						this.buffer.append(' ');
					}
					visitAnnotationsList(annotations);
				}
				this.buffer.append("...");//$NON-NLS-1$
			}
		}
		this.buffer.append(" ");//$NON-NLS-1$
		node.getName().accept(this);
		int size = node.getExtraDimensions();
		if (node.getAST().apiLevel() >= JLS8) {
			List dimensions = node.extraDimensions();
			for (int i = 0; i < size; i++) {
				visit((Dimension) dimensions.get(i));
			}
		} else {
			for (int i = 0; i < size; i++) {
				this.buffer.append("[]"); //$NON-NLS-1$
			}
		}
		if (node.getInitializer() != null) {
			this.buffer.append("=");//$NON-NLS-1$
			node.getInitializer().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(StringLiteral node) {
		this.buffer.append(node.getEscapedValue());
		return false;
	}

	@Override
	public boolean visit(SuperConstructorInvocation node) {
		printIndent();
		if (node.getExpression() != null) {
			node.getExpression().accept(this);
			this.buffer.append(".");//$NON-NLS-1$
		}
		if (node.getAST().apiLevel() >= JLS3) {
			if (!node.typeArguments().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeArguments().iterator(); it.hasNext(); ) {
					Type t = (Type) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
		}
		this.buffer.append("super(");//$NON-NLS-1$
		for (Iterator it = node.arguments().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(");\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(SuperFieldAccess node) {
		if (node.getQualifier() != null) {
			node.getQualifier().accept(this);
			this.buffer.append(".");//$NON-NLS-1$
		}
		this.buffer.append("super.");//$NON-NLS-1$
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(SuperMethodInvocation node) {
		if (node.getQualifier() != null) {
			node.getQualifier().accept(this);
			this.buffer.append(".");//$NON-NLS-1$
		}
		this.buffer.append("super.");//$NON-NLS-1$
		if (node.getAST().apiLevel() >= JLS3) {
			if (!node.typeArguments().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeArguments().iterator(); it.hasNext(); ) {
					Type t = (Type) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
		}
		node.getName().accept(this);
		this.buffer.append("(");//$NON-NLS-1$
		for (Iterator it = node.arguments().iterator(); it.hasNext(); ) {
			Expression e = (Expression) it.next();
			e.accept(this);
			if (it.hasNext()) {
				this.buffer.append(",");//$NON-NLS-1$
			}
		}
		this.buffer.append(")");//$NON-NLS-1$
		return false;
	}

	/*
	 * @see ASTVisitor#visit(SuperMethodReference)
	 * 
	 * @since 3.10
	 */
	@Override
	public boolean visit(SuperMethodReference node) {
		if (node.getQualifier() != null) {
			node.getQualifier().accept(this);
			this.buffer.append('.');
		}
		this.buffer.append("super");//$NON-NLS-1$
		visitReferenceTypeArguments(node.typeArguments());
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(SwitchCase node) {
		if ((node.getAST().isPreviewEnabled())) {
			if (node.isDefault()) {
				this.buffer.append("default");//$NON-NLS-1$
				this.buffer.append(node.isSwitchLabeledRule() ? " ->" : ":");//$NON-NLS-1$ //$NON-NLS-2$
			} else {
				this.buffer.append("case ");//$NON-NLS-1$
				for (Iterator it = node.expressions().iterator(); it.hasNext(); ) {
					Expression t = (Expression) it.next();
						t.accept(this);
						this.buffer.append(it.hasNext() ? ", " : //$NON-NLS-1$
							node.isSwitchLabeledRule() ? " ->" : ":");//$NON-NLS-1$ //$NON-NLS-2$
				}
			}
		}
		else {
			if (node.isDefault()) {
				this.buffer.append("default :\n");//$NON-NLS-1$
			} else {
				this.buffer.append("case ");//$NON-NLS-1$
				getSwitchExpression(node).accept(this);
				this.buffer.append(":\n");//$NON-NLS-1$
			}
		}
		this.indent++; //decremented in visit(SwitchStatement)
		return false;
	}
	Deprecated: /**
	 * @deprecated
	 */
	private Expression getSwitchExpression(SwitchCase node) {
		return node.getExpression();
	}

	private void visitSwitchNode(ASTNode node) {
		this.buffer.append("switch (");//$NON-NLS-1$
		if (node instanceof SwitchExpression) {
			((SwitchExpression)node).getExpression().accept(this);
		} else if (node instanceof SwitchStatement) {
			((SwitchStatement)node).getExpression().accept(this);
		}
		this.buffer.append(") ");//$NON-NLS-1$
		this.buffer.append("{\n");//$NON-NLS-1$
		this.indent++;
		if (node instanceof SwitchExpression) {
			for (Iterator it = ((SwitchExpression)node).statements().iterator(); it.hasNext(); ) {
				Statement s = (Statement) it.next();
				s.accept(this);
				this.indent--; // incremented in visit(SwitchCase)
			}
		} else if (node instanceof SwitchStatement) {
			for (Iterator it = ((SwitchStatement)node).statements().iterator(); it.hasNext(); ) {
				Statement s = (Statement) it.next();
				s.accept(this);
				this.indent--; // incremented in visit(SwitchCase)
			}
		}
		this.indent--;
		printIndent();
		this.buffer.append("}\n");//$NON-NLS-1$
			
	}
	@Override
	public boolean visit(SwitchExpression node) {
		visitSwitchNode(node);
		return false;
	}
	
	@Override
	public boolean visit(SwitchStatement node) {
		visitSwitchNode(node);
		return false;
	}

	@Override
	public boolean visit(SynchronizedStatement node) {
		this.buffer.append("synchronized (");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(") ");//$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(TagElement node) {
		if (node.isNested()) {
			// nested tags are always enclosed in braces
			this.buffer.append("{");//$NON-NLS-1$
		} else {
			// top-level tags always begin on a new line
			this.buffer.append("\n * ");//$NON-NLS-1$
		}
		boolean previousRequiresWhiteSpace = false;
		if (node.getTagName() != null) {
			this.buffer.append(node.getTagName());
			previousRequiresWhiteSpace = true;
		}
		boolean previousRequiresNewLine = false;
		for (Iterator it = node.fragments().iterator(); it.hasNext(); ) {
			ASTNode e = (ASTNode) it.next();
			// Name, MemberRef, MethodRef, and nested TagElement do not include white space.
			// TextElements don't always include whitespace, see <https://bugs.eclipse.org/206518>.
			boolean currentIncludesWhiteSpace = false;
			if (e instanceof TextElement) {
				String text = ((TextElement) e).getText();
				if (text.length() > 0 && ScannerHelper.isWhitespace(text.charAt(0))) {
					currentIncludesWhiteSpace = true; // workaround for https://bugs.eclipse.org/403735
				}
			}
			if (previousRequiresNewLine && currentIncludesWhiteSpace) {
				this.buffer.append("\n * ");//$NON-NLS-1$
			}
			previousRequiresNewLine = currentIncludesWhiteSpace;
			// add space if required to separate
			if (previousRequiresWhiteSpace && !currentIncludesWhiteSpace) {
				this.buffer.append(" "); //$NON-NLS-1$
			}
			e.accept(this);
			previousRequiresWhiteSpace = !currentIncludesWhiteSpace && !(e instanceof TagElement);
		}
		if (node.isNested()) {
			this.buffer.append("}");//$NON-NLS-1$
		}
		return false;
	}

	@Override
	public boolean visit(TextBlock node) {
		this.buffer.append(node.getEscapedValue());
		return false;
	}
	
	@Override
	public boolean visit(TextElement node) {
		this.buffer.append(node.getText());
		return false;
	}

	@Override
	public boolean visit(ThisExpression node) {
		if (node.getQualifier() != null) {
			node.getQualifier().accept(this);
			this.buffer.append(".");//$NON-NLS-1$
		}
		this.buffer.append("this");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(ThrowStatement node) {
		printIndent();
		this.buffer.append("throw ");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(TryStatement node) {
		printIndent();
		this.buffer.append("try ");//$NON-NLS-1$
		if (node.getAST().apiLevel() >= JLS4) {
			List resources = node.resources();
			if (!resources.isEmpty()) {
				this.buffer.append('(');
				for (Iterator it = resources.iterator(); it.hasNext(); ) {
					Expression variable = (Expression) it.next();
					variable.accept(this);
					if (it.hasNext()) {
						this.buffer.append(';');
					}
				}
				this.buffer.append(')');
			}
		}
		node.getBody().accept(this);
		this.buffer.append(" ");//$NON-NLS-1$
		for (Iterator it = node.catchClauses().iterator(); it.hasNext(); ) {
			CatchClause cc = (CatchClause) it.next();
			cc.accept(this);
		}
		if (node.getFinally() != null) {
			this.buffer.append(" finally ");//$NON-NLS-1$
			node.getFinally().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(TypeDeclaration node) {
		if (node.getJavadoc() != null) {
			node.getJavadoc().accept(this);
		}
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
		}
		this.buffer.append(node.isInterface() ? "interface " : "class ");//$NON-NLS-2$//$NON-NLS-1$
		node.getName().accept(this);
		if (node.getAST().apiLevel() >= JLS3) {
			if (!node.typeParameters().isEmpty()) {
				this.buffer.append("<");//$NON-NLS-1$
				for (Iterator it = node.typeParameters().iterator(); it.hasNext(); ) {
					TypeParameter t = (TypeParameter) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(",");//$NON-NLS-1$
					}
				}
				this.buffer.append(">");//$NON-NLS-1$
			}
		}
		this.buffer.append(" ");//$NON-NLS-1$
		if (node.getAST().apiLevel() == JLS2) {
			if (getSuperclass(node) != null) {
				this.buffer.append("extends ");//$NON-NLS-1$
				getSuperclass(node).accept(this);
				this.buffer.append(" ");//$NON-NLS-1$
			}
			if (!superInterfaces(node).isEmpty()) {
				this.buffer.append(node.isInterface() ? "extends " : "implements ");//$NON-NLS-2$//$NON-NLS-1$
				for (Iterator it = superInterfaces(node).iterator(); it.hasNext(); ) {
					Name n = (Name) it.next();
					n.accept(this);
					if (it.hasNext()) {
						this.buffer.append(", ");//$NON-NLS-1$
					}
				}
				this.buffer.append(" ");//$NON-NLS-1$
			}
		}
		if (node.getAST().apiLevel() >= JLS3) {
			if (node.getSuperclassType() != null) {
				this.buffer.append("extends ");//$NON-NLS-1$
				node.getSuperclassType().accept(this);
				this.buffer.append(" ");//$NON-NLS-1$
			}
			if (!node.superInterfaceTypes().isEmpty()) {
				this.buffer.append(node.isInterface() ? "extends " : "implements ");//$NON-NLS-2$//$NON-NLS-1$
				for (Iterator it = node.superInterfaceTypes().iterator(); it.hasNext(); ) {
					Type t = (Type) it.next();
					t.accept(this);
					if (it.hasNext()) {
						this.buffer.append(", ");//$NON-NLS-1$
					}
				}
				this.buffer.append(" ");//$NON-NLS-1$
			}
		}
		this.buffer.append("{\n");//$NON-NLS-1$
		this.indent++;
		for (Iterator it = node.bodyDeclarations().iterator(); it.hasNext(); ) {
			BodyDeclaration d = (BodyDeclaration) it.next();
			d.accept(this);
		}
		this.indent--;
		printIndent();
		this.buffer.append("}\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(TypeDeclarationStatement node) {
		if (node.getAST().apiLevel() == JLS2) {
			getTypeDeclaration(node).accept(this);
		}
		if (node.getAST().apiLevel() >= JLS3) {
			node.getDeclaration().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(TypeLiteral node) {
		node.getType().accept(this);
		this.buffer.append(".class");//$NON-NLS-1$
		return false;
	}

	/*
	 * @see ASTVisitor#visit(TypeMethodReference)
	 * 
	 * @since 3.10
	 */
	@Override
	public boolean visit(TypeMethodReference node) {
		node.getType().accept(this);
		visitReferenceTypeArguments(node.typeArguments());
		node.getName().accept(this);
		return false;
	}

	@Override
	public boolean visit(TypeParameter node) {
		if (node.getAST().apiLevel() >= JLS8) {
			printModifiers(node.modifiers());
		}
		node.getName().accept(this);
		if (!node.typeBounds().isEmpty()) {
			this.buffer.append(" extends ");//$NON-NLS-1$
			for (Iterator it = node.typeBounds().iterator(); it.hasNext(); ) {
				Type t = (Type) it.next();
				t.accept(this);
				if (it.hasNext()) {
					this.buffer.append(" & ");//$NON-NLS-1$
				}
			}
		}
		return false;
	}

	@Override
	public boolean visit(UnionType node) {
		for (Iterator it = node.types().iterator(); it.hasNext(); ) {
			Type t = (Type) it.next();
			t.accept(this);
			if (it.hasNext()) {
				this.buffer.append('|');
			}
		}
		return false;
	}

	@Override
	public boolean visit(UsesDirective node) {
		printIndent();
		this.buffer.append("uses");//$NON-NLS-1$
		this.buffer.append(" ");//$NON-NLS-1$
		node.getName().accept(this);
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(VariableDeclarationExpression node) {
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
		}
		node.getType().accept(this);
		this.buffer.append(" ");//$NON-NLS-1$
		for (Iterator it = node.fragments().iterator(); it.hasNext(); ) {
			VariableDeclarationFragment f = (VariableDeclarationFragment) it.next();
			f.accept(this);
			if (it.hasNext()) {
				this.buffer.append(", ");//$NON-NLS-1$
			}
		}
		return false;
	}

	@Override
	public boolean visit(VariableDeclarationFragment node) {
		node.getName().accept(this);
		int size = node.getExtraDimensions();
		if (node.getAST().apiLevel() >= JLS8) {
			List dimensions = node.extraDimensions();
			for (int i = 0; i < size; i++) {
				visit((Dimension) dimensions.get(i));
			}
		} else {
			for (int i = 0; i < size; i++) {
				this.buffer.append("[]");//$NON-NLS-1$
			}
		}
		if (node.getInitializer() != null) {
			this.buffer.append("=");//$NON-NLS-1$
			node.getInitializer().accept(this);
		}
		return false;
	}

	@Override
	public boolean visit(VariableDeclarationStatement node) {
		printIndent();
		if (node.getAST().apiLevel() == JLS2) {
			printModifiers(node.getModifiers());
		}
		if (node.getAST().apiLevel() >= JLS3) {
			printModifiers(node.modifiers());
		}
		node.getType().accept(this);
		this.buffer.append(" ");//$NON-NLS-1$
		for (Iterator it = node.fragments().iterator(); it.hasNext(); ) {
			VariableDeclarationFragment f = (VariableDeclarationFragment) it.next();
			f.accept(this);
			if (it.hasNext()) {
				this.buffer.append(", ");//$NON-NLS-1$
			}
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	@Override
	public boolean visit(WhileStatement node) {
		printIndent();
		this.buffer.append("while (");//$NON-NLS-1$
		node.getExpression().accept(this);
		this.buffer.append(") ");//$NON-NLS-1$
		node.getBody().accept(this);
		return false;
	}

	@Override
	public boolean visit(WildcardType node) {
		visitTypeAnnotations(node);
		this.buffer.append("?");//$NON-NLS-1$
		Type bound = node.getBound();
		if (bound != null) {
			if (node.isUpperBound()) {
				this.buffer.append(" extends ");//$NON-NLS-1$
			} else {
				this.buffer.append(" super ");//$NON-NLS-1$
			}
			bound.accept(this);
		}
		return false;
	}
	
	@Override
	public boolean visit(YieldStatement node) {
		if ((node.getAST().isPreviewEnabled()) && node.isImplicit()  && node.getExpression() == null) {
			return false;
		}
		printIndent();
		this.buffer.append("yield"); //$NON-NLS-1$
		if (node.getExpression() != null) {
			this.buffer.append(" ");//$NON-NLS-1$
			node.getExpression().accept(this);
		}
		this.buffer.append(";\n");//$NON-NLS-1$
		return false;
	}

	Deprecated: /**
	 * @deprecated
	 */
	private void visitComponentType(ArrayType node) {
		node.getComponentType().accept(this);
	}

}
/

org.eclipse.jdt/ org.eclipse.jdt.core/ 3.20.0/ org/eclipse/jdt/internal/core/dom/NaiveASTFlattener.java
