Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2005 IBM Corporation and others. * All rights reserved. This program and the accompanying materials * are made available under the terms of the Eclipse Public License v1.0 * which accompanies this distribution, and is available at * http://www.eclipse.org/legal/epl-v10.html * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package coloredide.utils; import java.util.Iterator; import java.util.List; import org.eclipse.jdt.core.dom.AST; import org.eclipse.jdt.core.dom.ASTNode; import org.eclipse.jdt.core.dom.ASTVisitor; import org.eclipse.jdt.core.dom.AbstractTypeDeclaration; import org.eclipse.jdt.core.dom.Annotation; import org.eclipse.jdt.core.dom.AnnotationTypeDeclaration; import org.eclipse.jdt.core.dom.AnnotationTypeMemberDeclaration; import org.eclipse.jdt.core.dom.AnonymousClassDeclaration; import org.eclipse.jdt.core.dom.ArrayAccess; import org.eclipse.jdt.core.dom.ArrayCreation; import org.eclipse.jdt.core.dom.ArrayInitializer; import org.eclipse.jdt.core.dom.ArrayType; import org.eclipse.jdt.core.dom.AssertStatement; import org.eclipse.jdt.core.dom.Assignment; import org.eclipse.jdt.core.dom.Block; import org.eclipse.jdt.core.dom.BlockComment; import org.eclipse.jdt.core.dom.BodyDeclaration; import org.eclipse.jdt.core.dom.BooleanLiteral; import org.eclipse.jdt.core.dom.BreakStatement; import org.eclipse.jdt.core.dom.CastExpression; import org.eclipse.jdt.core.dom.CatchClause; import org.eclipse.jdt.core.dom.CharacterLiteral; import org.eclipse.jdt.core.dom.ClassInstanceCreation; import org.eclipse.jdt.core.dom.CompilationUnit; import org.eclipse.jdt.core.dom.ConditionalExpression; import org.eclipse.jdt.core.dom.ConstructorInvocation; import org.eclipse.jdt.core.dom.ContinueStatement; import org.eclipse.jdt.core.dom.DoStatement; import org.eclipse.jdt.core.dom.EmptyStatement; import org.eclipse.jdt.core.dom.EnhancedForStatement; import org.eclipse.jdt.core.dom.EnumConstantDeclaration; import org.eclipse.jdt.core.dom.EnumDeclaration; import org.eclipse.jdt.core.dom.Expression; import org.eclipse.jdt.core.dom.ExpressionStatement; import org.eclipse.jdt.core.dom.FieldAccess; import org.eclipse.jdt.core.dom.FieldDeclaration; import org.eclipse.jdt.core.dom.ForStatement; import org.eclipse.jdt.core.dom.IfStatement; import org.eclipse.jdt.core.dom.ImportDeclaration; import org.eclipse.jdt.core.dom.InfixExpression; import org.eclipse.jdt.core.dom.Initializer; import org.eclipse.jdt.core.dom.InstanceofExpression; import org.eclipse.jdt.core.dom.Javadoc; import org.eclipse.jdt.core.dom.LabeledStatement; import org.eclipse.jdt.core.dom.LineComment; import org.eclipse.jdt.core.dom.MarkerAnnotation; import org.eclipse.jdt.core.dom.MemberRef; import org.eclipse.jdt.core.dom.MemberValuePair; import org.eclipse.jdt.core.dom.MethodDeclaration; import org.eclipse.jdt.core.dom.MethodInvocation; import org.eclipse.jdt.core.dom.MethodRef; import org.eclipse.jdt.core.dom.MethodRefParameter; import org.eclipse.jdt.core.dom.Modifier; import org.eclipse.jdt.core.dom.Name; import org.eclipse.jdt.core.dom.NormalAnnotation; import org.eclipse.jdt.core.dom.NullLiteral; import org.eclipse.jdt.core.dom.NumberLiteral; import org.eclipse.jdt.core.dom.PackageDeclaration; import org.eclipse.jdt.core.dom.ParameterizedType; import org.eclipse.jdt.core.dom.ParenthesizedExpression; import org.eclipse.jdt.core.dom.PostfixExpression; import org.eclipse.jdt.core.dom.PrefixExpression; import org.eclipse.jdt.core.dom.PrimitiveType; import org.eclipse.jdt.core.dom.QualifiedName; import org.eclipse.jdt.core.dom.QualifiedType; import org.eclipse.jdt.core.dom.ReturnStatement; import org.eclipse.jdt.core.dom.SimpleName; import org.eclipse.jdt.core.dom.SimpleType; import org.eclipse.jdt.core.dom.SingleMemberAnnotation; import org.eclipse.jdt.core.dom.SingleVariableDeclaration; import org.eclipse.jdt.core.dom.Statement; import org.eclipse.jdt.core.dom.StringLiteral; import org.eclipse.jdt.core.dom.SuperConstructorInvocation; import org.eclipse.jdt.core.dom.SuperFieldAccess; import org.eclipse.jdt.core.dom.SuperMethodInvocation; import org.eclipse.jdt.core.dom.SwitchCase; import org.eclipse.jdt.core.dom.SwitchStatement; import org.eclipse.jdt.core.dom.SynchronizedStatement; import org.eclipse.jdt.core.dom.TagElement; import org.eclipse.jdt.core.dom.TextElement; import org.eclipse.jdt.core.dom.ThisExpression; import org.eclipse.jdt.core.dom.ThrowStatement; import org.eclipse.jdt.core.dom.TryStatement; import org.eclipse.jdt.core.dom.Type; import org.eclipse.jdt.core.dom.TypeDeclaration; import org.eclipse.jdt.core.dom.TypeDeclarationStatement; import org.eclipse.jdt.core.dom.TypeLiteral; import org.eclipse.jdt.core.dom.TypeParameter; import org.eclipse.jdt.core.dom.VariableDeclarationExpression; import org.eclipse.jdt.core.dom.VariableDeclarationFragment; import org.eclipse.jdt.core.dom.VariableDeclarationStatement; import org.eclipse.jdt.core.dom.WhileStatement; import org.eclipse.jdt.core.dom.WildcardType; /** * 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 */ public class CopiedNaiveASTFlattener extends ASTVisitor { /** * The string buffer into which the serialized representation of the AST is * written. */ protected StringBuffer buffer; protected int indent = 0; /** * Creates a new AST printer. */ protected CopiedNaiveASTFlattener() { this.buffer = new StringBuffer(); } /** * Returns the string accumulated in the visit. * * @return the serialized */ public String getResult() { return this.buffer.toString(); } /** * Resets this printer so that it can be used again. */ public void reset() { this.buffer.setLength(0); } protected 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 3.0 modifiers and annotations. * * @param ext * the list of modifier and annotation nodes (element type: * <code>IExtendedModifiers</code>) */ protected void printModifiers(List ext) { for (Iterator it = ext.iterator(); it.hasNext();) { ASTNode p = (ASTNode) it.next(); p.accept(this); this.buffer.append(" ");//$NON-NLS-1$ } } /** * 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 ");//$NON-NLS-1$ } } /* * @see ASTVisitor#visit(AnnotationTypeDeclaration) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(AnnotationTypeMemberDeclaration) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(AnonymousClassDeclaration) */ 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; } /* * @see ASTVisitor#visit(ArrayAccess) */ 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; } /* * @see ASTVisitor#visit(ArrayCreation) */ 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; } /* * @see ASTVisitor#visit(ArrayInitializer) */ 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; } /* * @see ASTVisitor#visit(ArrayType) */ public boolean visit(ArrayType node) { node.getComponentType().accept(this); this.buffer.append("[]");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(AssertStatement) */ 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; } /* * @see ASTVisitor#visit(Assignment) */ public boolean visit(Assignment node) { node.getLeftHandSide().accept(this); this.buffer.append(node.getOperator().toString()); node.getRightHandSide().accept(this); return false; } /* * @see ASTVisitor#visit(Block) */ 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; } /* * @see ASTVisitor#visit(BlockComment) * @since 3.0 */ public boolean visit(BlockComment node) { printIndent(); this.buffer.append("/* */");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(BooleanLiteral) */ 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; } /* * @see ASTVisitor#visit(BreakStatement) */ 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; } /* * @see ASTVisitor#visit(CastExpression) */ 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; } /* * @see ASTVisitor#visit(CatchClause) */ 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; } /* * @see ASTVisitor#visit(CharacterLiteral) */ public boolean visit(CharacterLiteral node) { this.buffer.append(node.getEscapedValue()); return false; } /* * @see ASTVisitor#visit(ClassInstanceCreation) */ 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() >= AST.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; } /* * @see ASTVisitor#visit(CompilationUnit) */ public boolean visit(CompilationUnit node) { 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; } /* * @see ASTVisitor#visit(ConditionalExpression) */ 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; } /* * @see ASTVisitor#visit(ConstructorInvocation) */ public boolean visit(ConstructorInvocation node) { printIndent(); if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(ContinueStatement) */ 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; } /* * @see ASTVisitor#visit(DoStatement) */ 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; } /* * @see ASTVisitor#visit(EmptyStatement) */ public boolean visit(EmptyStatement node) { printIndent(); this.buffer.append(";\n");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(EnhancedForStatement) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(EnumConstantDeclaration) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(EnumDeclaration) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(ExpressionStatement) */ public boolean visit(ExpressionStatement node) { printIndent(); node.getExpression().accept(this); this.buffer.append(";\n");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(FieldAccess) */ public boolean visit(FieldAccess node) { node.getExpression().accept(this); this.buffer.append(".");//$NON-NLS-1$ node.getName().accept(this); return false; } /* * @see ASTVisitor#visit(FieldDeclaration) */ public boolean visit(FieldDeclaration node) { if (node.getJavadoc() != null) { node.getJavadoc().accept(this); } printIndent(); if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(ForStatement) */ 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()) 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()) buffer.append(", ");//$NON-NLS-1$ } this.buffer.append(") ");//$NON-NLS-1$ node.getBody().accept(this); return false; } /* * @see ASTVisitor#visit(IfStatement) */ 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; } /* * @see ASTVisitor#visit(ImportDeclaration) */ public boolean visit(ImportDeclaration node) { printIndent(); this.buffer.append("import ");//$NON-NLS-1$ if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(InfixExpression) */ 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; } /* * @see ASTVisitor#visit(InstanceofExpression) */ public boolean visit(InstanceofExpression node) { node.getLeftOperand().accept(this); this.buffer.append(" instanceof ");//$NON-NLS-1$ node.getRightOperand().accept(this); return false; } /* * @see ASTVisitor#visit(Initializer) */ public boolean visit(Initializer node) { if (node.getJavadoc() != null) { node.getJavadoc().accept(this); } if (node.getAST().apiLevel() >= AST.JLS3) { printModifiers(node.modifiers()); } node.getBody().accept(this); return false; } /* * @see ASTVisitor#visit(Javadoc) */ 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; } /* * @see ASTVisitor#visit(LabeledStatement) */ public boolean visit(LabeledStatement node) { printIndent(); node.getLabel().accept(this); this.buffer.append(": ");//$NON-NLS-1$ node.getBody().accept(this); return false; } /* * @see ASTVisitor#visit(LineComment) * @since 3.0 */ public boolean visit(LineComment node) { this.buffer.append("//\n");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(MarkerAnnotation) * @since 3.1 */ public boolean visit(MarkerAnnotation node) { this.buffer.append("@");//$NON-NLS-1$ node.getTypeName().accept(this); return false; } /* * @see ASTVisitor#visit(MemberRef) * @since 3.0 */ 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; } /* * @see ASTVisitor#visit(MemberValuePair) * @since 3.1 */ public boolean visit(MemberValuePair node) { node.getName().accept(this); this.buffer.append("=");//$NON-NLS-1$ node.getValue().accept(this); return false; } /* * @see ASTVisitor#visit(MethodRef) * @since 3.0 */ 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; } /* * @see ASTVisitor#visit(MethodRefParameter) * @since 3.0 */ public boolean visit(MethodRefParameter node) { node.getType().accept(this); if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(MethodDeclaration) */ public boolean visit(MethodDeclaration node) { if (node.getJavadoc() != null) { node.getJavadoc().accept(this); } printIndent(); hook_beforeVisitMethodDeclaration(node); if (node.getAST().apiLevel() >= AST.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.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("(");//$NON-NLS-1$ 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(")");//$NON-NLS-1$ for (int i = 0; i < node.getExtraDimensions(); i++) { this.buffer.append("[]"); //$NON-NLS-1$ } if (!node.thrownExceptions().isEmpty()) { this.buffer.append(" throws ");//$NON-NLS-1$ for (Iterator it = node.thrownExceptions().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.getBody() == null) { this.buffer.append(";\n");//$NON-NLS-1$ } else { node.getBody().accept(this); } return false; } protected void hook_beforeVisitMethodDeclaration(MethodDeclaration node) { } /* * @see ASTVisitor#visit(MethodInvocation) */ public boolean visit(MethodInvocation node) { if (node.getExpression() != null) { node.getExpression().accept(this); this.buffer.append(".");//$NON-NLS-1$ } if (node.getAST().apiLevel() >= AST.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(Modifier) * @since 3.1 */ public boolean visit(Modifier node) { this.buffer.append(node.getKeyword().toString()); return false; } /* * @see ASTVisitor#visit(NormalAnnotation) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(NullLiteral) */ public boolean visit(NullLiteral node) { this.buffer.append("null");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(NumberLiteral) */ public boolean visit(NumberLiteral node) { this.buffer.append(node.getToken()); return false; } /* * @see ASTVisitor#visit(PackageDeclaration) */ public boolean visit(PackageDeclaration node) { if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(ParameterizedType) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(ParenthesizedExpression) */ public boolean visit(ParenthesizedExpression node) { this.buffer.append("(");//$NON-NLS-1$ node.getExpression().accept(this); this.buffer.append(")");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(PostfixExpression) */ public boolean visit(PostfixExpression node) { node.getOperand().accept(this); this.buffer.append(node.getOperator().toString()); return false; } /* * @see ASTVisitor#visit(PrefixExpression) */ public boolean visit(PrefixExpression node) { this.buffer.append(node.getOperator().toString()); node.getOperand().accept(this); return false; } /* * @see ASTVisitor#visit(PrimitiveType) */ public boolean visit(PrimitiveType node) { this.buffer.append(node.getPrimitiveTypeCode().toString()); return false; } /* * @see ASTVisitor#visit(QualifiedName) */ public boolean visit(QualifiedName node) { node.getQualifier().accept(this); this.buffer.append(".");//$NON-NLS-1$ node.getName().accept(this); return false; } /* * @see ASTVisitor#visit(QualifiedType) * @since 3.1 */ public boolean visit(QualifiedType node) { node.getQualifier().accept(this); this.buffer.append(".");//$NON-NLS-1$ node.getName().accept(this); return false; } /* * @see ASTVisitor#visit(ReturnStatement) */ 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; } /* * @see ASTVisitor#visit(SimpleName) */ public boolean visit(SimpleName node) { this.buffer.append(node.getIdentifier()); return false; } /* * @see ASTVisitor#visit(SimpleType) */ public boolean visit(SimpleType node) { return true; } /* * @see ASTVisitor#visit(SingleMemberAnnotation) * @since 3.1 */ 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; } /* * @see ASTVisitor#visit(SingleVariableDeclaration) */ public boolean visit(SingleVariableDeclaration node) { printIndent(); if (node.getAST().apiLevel() >= AST.JLS3) { printModifiers(node.modifiers()); } node.getType().accept(this); if (node.getAST().apiLevel() >= AST.JLS3) { if (node.isVarargs()) { this.buffer.append("...");//$NON-NLS-1$ } } this.buffer.append(" ");//$NON-NLS-1$ node.getName().accept(this); for (int i = 0; i < node.getExtraDimensions(); i++) { this.buffer.append("[]"); //$NON-NLS-1$ } if (node.getInitializer() != null) { this.buffer.append("=");//$NON-NLS-1$ node.getInitializer().accept(this); } return false; } /* * @see ASTVisitor#visit(StringLiteral) */ public boolean visit(StringLiteral node) { this.buffer.append(node.getEscapedValue()); return false; } /* * @see ASTVisitor#visit(SuperConstructorInvocation) */ public boolean visit(SuperConstructorInvocation node) { printIndent(); if (node.getExpression() != null) { node.getExpression().accept(this); this.buffer.append(".");//$NON-NLS-1$ } if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(SuperFieldAccess) */ 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; } /* * @see ASTVisitor#visit(SuperMethodInvocation) */ 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() >= AST.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(SwitchCase) */ public boolean visit(SwitchCase node) { if (node.isDefault()) { this.buffer.append("default :\n");//$NON-NLS-1$ } else { this.buffer.append("case ");//$NON-NLS-1$ node.getExpression().accept(this); this.buffer.append(":\n");//$NON-NLS-1$ } this.indent++; // decremented in visit(SwitchStatement) return false; } /* * @see ASTVisitor#visit(SwitchStatement) */ public boolean visit(SwitchStatement node) { this.buffer.append("switch (");//$NON-NLS-1$ node.getExpression().accept(this); this.buffer.append(") ");//$NON-NLS-1$ 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--; // incremented in visit(SwitchCase) } this.indent--; printIndent(); this.buffer.append("}\n");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(SynchronizedStatement) */ 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; } /* * @see ASTVisitor#visit(TagElement) * @since 3.0 */ 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(); // assume text elements include necessary leading and trailing // whitespace // but Name, MemberRef, MethodRef, and nested TagElement do not // include white space boolean currentIncludesWhiteSpace = (e instanceof TextElement); 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; } /* * @see ASTVisitor#visit(TextElement) * @since 3.0 */ public boolean visit(TextElement node) { this.buffer.append(node.getText()); return false; } /* * @see ASTVisitor#visit(ThisExpression) */ 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; } /* * @see ASTVisitor#visit(ThrowStatement) */ 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; } /* * @see ASTVisitor#visit(TryStatement) */ public boolean visit(TryStatement node) { printIndent(); this.buffer.append("try ");//$NON-NLS-1$ 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; } /* * @see ASTVisitor#visit(TypeDeclaration) */ public boolean visit(TypeDeclaration node) { if (node.getJavadoc() != null) { node.getJavadoc().accept(this); } if (node.getAST().apiLevel() >= AST.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() >= AST.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() >= AST.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++; BodyDeclaration prev = null; for (Iterator it = node.bodyDeclarations().iterator(); it.hasNext();) { BodyDeclaration d = (BodyDeclaration) it.next(); if (prev instanceof EnumConstantDeclaration) { // enum constant declarations do not include punctuation if (d instanceof EnumConstantDeclaration) { // enum constant declarations are separated by commas this.buffer.append(", ");//$NON-NLS-1$ } else { // semicolon separates last enum constant declaration from // first class body declarations this.buffer.append("; ");//$NON-NLS-1$ } } d.accept(this); } this.indent--; printIndent(); this.buffer.append("}\n");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(TypeDeclarationStatement) */ public boolean visit(TypeDeclarationStatement node) { if (node.getAST().apiLevel() >= AST.JLS3) { node.getDeclaration().accept(this); } return false; } /* * @see ASTVisitor#visit(TypeLiteral) */ public boolean visit(TypeLiteral node) { node.getType().accept(this); this.buffer.append(".class");//$NON-NLS-1$ return false; } /* * @see ASTVisitor#visit(TypeParameter) * @since 3.1 */ public boolean visit(TypeParameter node) { 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; } /* * @see ASTVisitor#visit(VariableDeclarationExpression) */ public boolean visit(VariableDeclarationExpression node) { if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(VariableDeclarationFragment) */ public boolean visit(VariableDeclarationFragment node) { node.getName().accept(this); for (int i = 0; i < node.getExtraDimensions(); i++) { this.buffer.append("[]");//$NON-NLS-1$ } if (node.getInitializer() != null) { this.buffer.append("=");//$NON-NLS-1$ node.getInitializer().accept(this); } return false; } /* * @see ASTVisitor#visit(VariableDeclarationStatement) */ public boolean visit(VariableDeclarationStatement node) { printIndent(); if (node.getAST().apiLevel() >= AST.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; } /* * @see ASTVisitor#visit(WildcardType) * @since 3.1 */ public boolean visit(WildcardType 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; } /* * @see ASTVisitor#visit(WhileStatement) */ 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; } }