Java Code Examples for org.eclipse.jdt.core.dom.MethodDeclaration#setBody()

private MethodDeclaration createGetOuterHelper() {
	String outerTypeName= fType.getDeclaringClass().getTypeDeclaration().getName();

	MethodDeclaration helperMethod= fAst.newMethodDeclaration();
	helperMethod.modifiers().addAll(ASTNodeFactory.newModifiers(fAst, Modifier.PRIVATE));
	helperMethod.setName(fAst.newSimpleName(METHODNAME_OUTER_TYPE));
	helperMethod.setConstructor(false);
	helperMethod.setReturnType2(fAst.newSimpleType(fAst.newSimpleName(outerTypeName)));

	Block body= fAst.newBlock();
	helperMethod.setBody(body);

	ThisExpression thisExpression= fAst.newThisExpression();
	thisExpression.setQualifier(fAst.newSimpleName(outerTypeName));

	ReturnStatement endReturn= fAst.newReturnStatement();
	endReturn.setExpression(thisExpression);
	body.statements().add(endReturn);

	return helperMethod;
}
 

private MethodDeclaration createConstructor(CompilationUnitModificationDomain domain) {
    AST ast = domain.getAst();

    Block emptyBody = ast.newBlock();
    MethodDeclaration defaultConstructor = ast.newMethodDeclaration();
    defaultConstructor.setBody(emptyBody);
    defaultConstructor.setConstructor(true);
    defaultConstructor.setName(ast.newSimpleName(domain.getOriginalType().getName().toString()));
    defaultConstructor.modifiers().add(ast.newModifier(ModifierKeyword.PUBLIC_KEYWORD));

    if (preferencesManager.getPreferenceValue(ADD_GENERATED_ANNOTATION)) {
        generatedAnnotationPopulator.addGeneratedAnnotation(ast, defaultConstructor);
    }

    return defaultConstructor;
}
 

private MethodDeclaration createRunMethodDeclaration(ASTRewrite rewrite, ClassInstanceCreation classLoaderCreation) {
    AST ast = rewrite.getAST();

    MethodDeclaration methodDeclaration = ast.newMethodDeclaration();
    SimpleName methodName = ast.newSimpleName("run");
    Type returnType = (Type) rewrite.createCopyTarget(classLoaderCreation.getType());
    Block methodBody = createRunMethodBody(rewrite, classLoaderCreation);
    List<Modifier> modifiers = checkedList(methodDeclaration.modifiers());

    modifiers.add(ast.newModifier(PUBLIC_KEYWORD));
    methodDeclaration.setName(methodName);
    methodDeclaration.setReturnType2(returnType);
    methodDeclaration.setBody(methodBody);

    return methodDeclaration;
}
 

public void addWithMethodToBuilder(AST ast, TypeDeclaration stagedBuilderType,
        BuilderField builderField,
        StagedBuilderProperties nextStage) {
    Block newBlock = createWithMethodBody(ast, builderField);
    MethodDeclaration newWithMethod = stagedBuilderWithMethodDefiniationCreatorFragment.createNewWithMethod(ast,
            builderField, nextStage);
    newWithMethod.setBody(newBlock);
    markerAnnotationAttacher.attachAnnotation(ast, newWithMethod, OVERRIDE_ANNOTATION);
    stagedBuilderType.bodyDeclarations().add(newWithMethod);
}
 

/**
 * Returns the signature of the new method.
 *
 * @param methodName the method name used for the new method
 * @return the signature of the extracted method
 */
public String getSignature(String methodName) {
	MethodDeclaration methodDecl= createNewMethodDeclaration();
	methodDecl.setBody(null);
	String str= ASTNodes.asString(methodDecl);
	return str.substring(0, str.indexOf(';'));
}
 

public void addEmptyPrivateConstructor(AST ast, TypeDeclaration builderType) {
    MethodDeclaration privateConstructorMethod = ast.newMethodDeclaration();
    privateConstructorMethod.setBody(ast.newBlock());
    privateConstructorMethod.setConstructor(true);
    privateConstructorMethod.setName(ast.newSimpleName(builderType.getName().toString()));
    privateConstructorMethod.modifiers().add(ast.newModifier(ModifierKeyword.PRIVATE_KEYWORD));
    builderType.bodyDeclarations().add(privateConstructorMethod);
}
 

private MethodDeclaration createPublicConstructor(AST ast, Block body, TypeDeclaration builderType, List<BuilderField> fields) {
    MethodDeclaration publicConstructorMethod = ast.newMethodDeclaration();
    publicConstructorMethod.setBody(body);
    publicConstructorMethod.setConstructor(true);
    publicConstructorMethod.setName(ast.newSimpleName(builderType.getName().toString()));
    publicConstructorMethod.modifiers().add(ast.newModifier(ModifierKeyword.PUBLIC_KEYWORD));

    for (BuilderField field : fields) {
        SingleVariableDeclaration parameter = createParameter(ast, field.getFieldType(), field.getBuilderFieldName());
        publicConstructorMethod.parameters().add(parameter);
    }

    return publicConstructorMethod;

}
 

private MethodDeclaration createCopyConstructorWithBody(AST ast, TypeDeclaration builderType, TypeDeclaration originalType, String parameterName,
        Block body) {
    MethodDeclaration copyConstructor = ast.newMethodDeclaration();
    copyConstructor.setBody(body);
    copyConstructor.setConstructor(true);
    copyConstructor.setName(ast.newSimpleName(builderType.getName().toString()));
    copyConstructor.modifiers().add(ast.newModifier(PRIVATE_KEYWORD));
    copyConstructor.parameters().add(createParameter(ast, originalType, parameterName));
    return copyConstructor;
}
 

private MethodDeclaration createGetter(ParameterInfo pi, String declaringType, CompilationUnitRewrite cuRewrite) throws CoreException {
	AST ast= cuRewrite.getAST();
	ICompilationUnit cu= cuRewrite.getCu();
	IJavaProject project= cu.getJavaProject();

	MethodDeclaration methodDeclaration= ast.newMethodDeclaration();
	String fieldName= pi.getNewName();
	String getterName= getGetterName(pi, ast, project);
	String lineDelim= StubUtility.getLineDelimiterUsed(cu);
	String bareFieldname= NamingConventions.getBaseName(NamingConventions.VK_INSTANCE_FIELD, fieldName, project);
	if (createComments(project)) {
		String comment= CodeGeneration.getGetterComment(cu, declaringType, getterName, fieldName, pi.getNewTypeName(), bareFieldname, lineDelim);
		if (comment != null)
			methodDeclaration.setJavadoc((Javadoc) cuRewrite.getASTRewrite().createStringPlaceholder(comment, ASTNode.JAVADOC));
	}
	methodDeclaration.setName(ast.newSimpleName(getterName));
	methodDeclaration.setReturnType2(importBinding(pi.getNewTypeBinding(), cuRewrite));
	methodDeclaration.modifiers().add(ast.newModifier(ModifierKeyword.PUBLIC_KEYWORD));
	Block block= ast.newBlock();
	methodDeclaration.setBody(block);
	boolean useThis= StubUtility.useThisForFieldAccess(project);
	if (useThis) {
		fieldName= "this." + fieldName; //$NON-NLS-1$
	}
	String bodyContent= CodeGeneration.getGetterMethodBodyContent(cu, declaringType, getterName, fieldName, lineDelim);
	ASTNode getterBody= cuRewrite.getASTRewrite().createStringPlaceholder(bodyContent, ASTNode.EXPRESSION_STATEMENT);
	block.statements().add(getterBody);
	return methodDeclaration;
}
 

private MethodDeclaration createNewMethod(ASTNode[] selectedNodes, String lineDelimiter, TextEditGroup substitute) throws CoreException {
	MethodDeclaration result= createNewMethodDeclaration();
	result.setBody(createMethodBody(selectedNodes, substitute, result.getModifiers()));
	if (fGenerateJavadoc) {
		AbstractTypeDeclaration enclosingType=
			(AbstractTypeDeclaration)ASTNodes.getParent(fAnalyzer.getEnclosingBodyDeclaration(), AbstractTypeDeclaration.class);
		String string= CodeGeneration.getMethodComment(fCUnit, enclosingType.getName().getIdentifier(), result, null, lineDelimiter);
		if (string != null) {
			Javadoc javadoc= (Javadoc)fRewriter.createStringPlaceholder(string, ASTNode.JAVADOC);
			result.setJavadoc(javadoc);
		}
	}
	return result;
}
 

private MethodDeclaration createGetterMethod(AST ast, ASTRewrite rewriter, String lineDelimiter) throws CoreException {
	FieldDeclaration field= (FieldDeclaration)ASTNodes.getParent(fFieldDeclaration, FieldDeclaration.class);
	Type type= field.getType();
	MethodDeclaration result= ast.newMethodDeclaration();
	result.setName(ast.newSimpleName(fGetterName));
	result.modifiers().addAll(ASTNodeFactory.newModifiers(ast, createModifiers()));
	Type returnType= DimensionRewrite.copyTypeAndAddDimensions(type, fFieldDeclaration.extraDimensions(), rewriter);
	result.setReturnType2(returnType);

	Block block= ast.newBlock();
	result.setBody(block);

	String body= CodeGeneration.getGetterMethodBodyContent(fField.getCompilationUnit(), getTypeName(field.getParent()), fGetterName, fField.getElementName(), lineDelimiter);
	if (body != null) {
		ASTNode getterNode= rewriter.createStringPlaceholder(body, ASTNode.BLOCK);
    	block.statements().add(getterNode);
	} else {
		ReturnStatement rs= ast.newReturnStatement();
		rs.setExpression(ast.newSimpleName(fField.getElementName()));
		block.statements().add(rs);
	}
    if (fGenerateJavadoc) {
		String string= CodeGeneration.getGetterComment(
			fField.getCompilationUnit() , getTypeName(field.getParent()), fGetterName,
			fField.getElementName(), ASTNodes.asString(type),
			StubUtility.getBaseName(fField),
			lineDelimiter);
		if (string != null) {
			Javadoc javadoc= (Javadoc)fRewriter.createStringPlaceholder(string, ASTNode.JAVADOC);
			result.setJavadoc(javadoc);
		}
	}
	return result;
}
 

private void addFieldInitializationToConstructor(ASTRewrite rewrite, MethodDeclaration constructor) throws JavaModelException {
	if (constructor.getBody() == null) {
		constructor.setBody(fCURewrite.getAST().newBlock());
	}

	Statement newStatement = createNewAssignmentStatement();
	rewrite.getListRewrite(constructor.getBody(), Block.STATEMENTS_PROPERTY).insertLast(newStatement, null);
}
 

private MethodDeclaration createNewMethodDeclaration(AST ast, IMethodBinding binding, ASTRewrite rewrite, ImportRewriteContext importRewriteContext, CodeGenerationSettings commentSettings) throws CoreException {
	String name= fTypeNode.getName().getIdentifier();
	MethodDeclaration decl= ast.newMethodDeclaration();
	decl.setConstructor(true);
	decl.setName(ast.newSimpleName(name));
	Block body= ast.newBlock();
	decl.setBody(body);

	SuperConstructorInvocation invocation= null;

	List<SingleVariableDeclaration> parameters= decl.parameters();
	String[] paramNames= getArgumentNames(binding);

	ITypeBinding enclosingInstance= getEnclosingInstance();
	if (enclosingInstance != null) {
		invocation= addEnclosingInstanceAccess(rewrite, importRewriteContext, parameters, paramNames, enclosingInstance);
	}

	if (binding == null) {
		decl.modifiers().add(ast.newModifier(Modifier.ModifierKeyword.PUBLIC_KEYWORD));
	} else {
		decl.modifiers().addAll(ASTNodeFactory.newModifiers(ast, binding.getModifiers()));

		ITypeBinding[] params= binding.getParameterTypes();
		for (int i= 0; i < params.length; i++) {
			SingleVariableDeclaration var= ast.newSingleVariableDeclaration();
			var.setType(getImportRewrite().addImport(params[i], ast, importRewriteContext, TypeLocation.LOCAL_VARIABLE));
			var.setName(ast.newSimpleName(paramNames[i]));
			parameters.add(var);
		}

		List<Type> thrownExceptions= decl.thrownExceptionTypes();
		ITypeBinding[] excTypes= binding.getExceptionTypes();
		for (int i= 0; i < excTypes.length; i++) {
			Type excType= getImportRewrite().addImport(excTypes[i], ast, importRewriteContext, TypeLocation.EXCEPTION);
			thrownExceptions.add(excType);
		}

		if (invocation == null) {
			invocation= ast.newSuperConstructorInvocation();
		}

		List<Expression> arguments= invocation.arguments();
		for (int i= 0; i < paramNames.length; i++) {
			Name argument= ast.newSimpleName(paramNames[i]);
			arguments.add(argument);
			addLinkedPosition(rewrite.track(argument), false, "arg_name_" + paramNames[i]); //$NON-NLS-1$
		}
	}

	String bodyStatement = (invocation == null) ? "" : ASTNodes.asFormattedString(invocation, 0, String.valueOf('\n'), getCompilationUnit().getJavaProject().getOptions(true)); //$NON-NLS-1$
	String placeHolder= CodeGeneration.getMethodBodyContent(getCompilationUnit(), name, name, true, bodyStatement, String.valueOf('\n'));
	if (placeHolder != null) {
		ASTNode todoNode= rewrite.createStringPlaceholder(placeHolder, ASTNode.RETURN_STATEMENT);
		body.statements().add(todoNode);
	}
	if (commentSettings != null) {
		String string= CodeGeneration.getMethodComment(getCompilationUnit(), name, decl, null, String.valueOf('\n'));
		if (string != null) {
			Javadoc javadoc= (Javadoc) rewrite.createStringPlaceholder(string, ASTNode.JAVADOC);
			decl.setJavadoc(javadoc);
		}
	}
	return decl;
}
 

public boolean visit(MethodDeclaration node){
			if(node.getName().getFullyQualifiedName().equals(_methodName)){
				ASTNode parent = node.getParent();
				while(parent != null){
					if(parent instanceof TypeDeclaration){
						break;
					}
					parent = parent.getParent();
				}
				if(parent == null){
					return false;
				}
				TypeDeclaration typeDeclaration = (TypeDeclaration) parent;
				Set<Integer> assertLines = analysis(node);
				if(assertLines.size() <= 1){
					_purifiedTestCases.add(_clazz + "::" + _methodName);
				} else {
					int methodID = 1;
					for(Integer line : assertLines){
						AST ast = AST.newAST(AST.JLS8);
						MethodDeclaration newMethod = ast.newMethodDeclaration();
						String newName = _methodName + "_purify_" + methodID;
						methodID ++;
						newMethod.setName(ast.newSimpleName(newName));
						newMethod.modifiers().addAll(ASTNode.copySubtrees(ast, node.modifiers()));
						if(node.thrownExceptionTypes().size() > 0){
							newMethod.thrownExceptionTypes().addAll(ASTNode.copySubtrees(ast, node.thrownExceptionTypes()));
						}
						newMethod.setReturnType2(ast.newPrimitiveType(PrimitiveType.VOID));
						List<ASTNode> result = new ArrayList<>();
						for(int i = 0; i < line; i++){
							if(assertLines.contains(i)){
								continue;
							}
							result.add((ASTNode) node.getBody().statements().get(i));
						}
						result.add((ASTNode) node.getBody().statements().get(line));
						// cannot simply remove duplicate assignment since it may cause side-effect
//						result = simplify(result);
						Block body = ast.newBlock();
						for(ASTNode astNode : result){
							body.statements().add(ASTNode.copySubtree(ast, astNode));
						}
						newMethod.setBody(body);
						typeDeclaration.bodyDeclarations().add(ASTNode.copySubtree(node.getAST(), newMethod));
						_purifiedTestCases.add(_clazz + "::" + newName);
					}
					node.getBody().statements().clear();
				}
				return false;
			}
			return true;
		}
 

private MethodDeclaration createSetterMethod(AST ast, ASTRewrite rewriter, String lineDelimiter) throws CoreException {
	FieldDeclaration field = ASTNodes.getParent(fFieldDeclaration, FieldDeclaration.class);
	Type type = field.getType();
	MethodDeclaration result = ast.newMethodDeclaration();
	result.setName(ast.newSimpleName(fSetterName));
	result.modifiers().addAll(ASTNodeFactory.newModifiers(ast, createModifiers()));
	if (fSetterMustReturnValue) {
		result.setReturnType2((Type) rewriter.createCopyTarget(type));
	}
	SingleVariableDeclaration param = ast.newSingleVariableDeclaration();
	result.parameters().add(param);
	param.setName(ast.newSimpleName(fArgName));
	param.setType((Type) rewriter.createCopyTarget(type));
	List<Dimension> extraDimensions = DimensionRewrite.copyDimensions(fFieldDeclaration.extraDimensions(), rewriter);
	param.extraDimensions().addAll(extraDimensions);

	Block block = ast.newBlock();
	result.setBody(block);

	String fieldAccess = createFieldAccess();
	String body = CodeGeneration.getSetterMethodBodyContent(fField.getCompilationUnit(), getTypeName(field.getParent()), fSetterName, fieldAccess, fArgName, lineDelimiter);
	if (body != null) {
		body = body.substring(0, body.lastIndexOf(lineDelimiter));
		ASTNode setterNode = rewriter.createStringPlaceholder(body, ASTNode.BLOCK);
		block.statements().add(setterNode);
	} else {
		Assignment ass = ast.newAssignment();
		ass.setLeftHandSide((Expression) rewriter.createStringPlaceholder(fieldAccess, ASTNode.QUALIFIED_NAME));
		ass.setRightHandSide(ast.newSimpleName(fArgName));
		block.statements().add(ass);
	}
	if (fSetterMustReturnValue) {
		ReturnStatement rs = ast.newReturnStatement();
		rs.setExpression(ast.newSimpleName(fArgName));
		block.statements().add(rs);
	}
	if (fGenerateJavadoc) {
		String string = CodeGeneration.getSetterComment(fField.getCompilationUnit(), getTypeName(field.getParent()), fSetterName, fField.getElementName(), ASTNodes.asString(type), fArgName, StubUtility.getBaseName(fField),
				lineDelimiter);
		if (string != null) {
			Javadoc javadoc = (Javadoc) fRewriter.createStringPlaceholder(string, ASTNode.JAVADOC);
			result.setJavadoc(javadoc);
		}
	}
	return result;
}
 

public static MethodDeclaration createConstructorStub(ICompilationUnit unit, ASTRewrite rewrite, ImportRewrite imports, ImportRewriteContext context, ITypeBinding typeBinding, IMethodBinding superConstructor, IVariableBinding[] variableBindings, int modifiers, CodeGenerationSettings settings) throws CoreException {
	AST ast= rewrite.getAST();

	MethodDeclaration decl= ast.newMethodDeclaration();
	decl.modifiers().addAll(ASTNodeFactory.newModifiers(ast, modifiers & ~Modifier.ABSTRACT & ~Modifier.NATIVE));
	decl.setName(ast.newSimpleName(typeBinding.getName()));
	decl.setConstructor(true);

	List<SingleVariableDeclaration> parameters= decl.parameters();
	if (superConstructor != null) {
		createTypeParameters(imports, context, ast, superConstructor, decl);

		createParameters(unit.getJavaProject(), imports, context, ast, superConstructor, null, decl);

		createThrownExceptions(decl, superConstructor, imports, context, ast);
	}

	Block body= ast.newBlock();
	decl.setBody(body);

	String delimiter= StubUtility.getLineDelimiterUsed(unit);

	if (superConstructor != null) {
		SuperConstructorInvocation invocation= ast.newSuperConstructorInvocation();
		SingleVariableDeclaration varDecl= null;
		for (Iterator<SingleVariableDeclaration> iterator= parameters.iterator(); iterator.hasNext();) {
			varDecl= iterator.next();
			invocation.arguments().add(ast.newSimpleName(varDecl.getName().getIdentifier()));
		}
		body.statements().add(invocation);
	}

	List<String> prohibited= new ArrayList<String>();
	for (final Iterator<SingleVariableDeclaration> iterator= parameters.iterator(); iterator.hasNext();)
		prohibited.add(iterator.next().getName().getIdentifier());
	String param= null;
	List<String> list= new ArrayList<String>(prohibited);
	String[] excluded= null;
	for (int i= 0; i < variableBindings.length; i++) {
		SingleVariableDeclaration var= ast.newSingleVariableDeclaration();
		var.setType(imports.addImport(variableBindings[i].getType(), ast, context));
		excluded= new String[list.size()];
		list.toArray(excluded);
		param= suggestParameterName(unit, variableBindings[i], excluded);
		list.add(param);
		var.setName(ast.newSimpleName(param));
		parameters.add(var);
	}

	list= new ArrayList<String>(prohibited);
	for (int i= 0; i < variableBindings.length; i++) {
		excluded= new String[list.size()];
		list.toArray(excluded);
		final String paramName= suggestParameterName(unit, variableBindings[i], excluded);
		list.add(paramName);
		final String fieldName= variableBindings[i].getName();
		Expression expression= null;
		if (paramName.equals(fieldName) || settings.useKeywordThis) {
			FieldAccess access= ast.newFieldAccess();
			access.setExpression(ast.newThisExpression());
			access.setName(ast.newSimpleName(fieldName));
			expression= access;
		} else
			expression= ast.newSimpleName(fieldName);
		Assignment assignment= ast.newAssignment();
		assignment.setLeftHandSide(expression);
		assignment.setRightHandSide(ast.newSimpleName(paramName));
		assignment.setOperator(Assignment.Operator.ASSIGN);
		body.statements().add(ast.newExpressionStatement(assignment));
	}

	if (settings != null && settings.createComments) {
		String string= CodeGeneration.getMethodComment(unit, typeBinding.getName(), decl, superConstructor, delimiter);
		if (string != null) {
			Javadoc javadoc= (Javadoc) rewrite.createStringPlaceholder(string, ASTNode.JAVADOC);
			decl.setJavadoc(javadoc);
		}
	}
	return decl;
}
 

/**
 * Creates and returns a new MethodDeclaration that represents the factory method to be used in
 * place of direct calls to the constructor in question.
 * 
 * @param ast An AST used as a factory for various AST nodes
 * @param ctorBinding binding for the constructor being wrapped
 * @param unitRewriter the ASTRewrite to be used
 * @return the new method declaration
 * @throws CoreException if an exception occurs while accessing its corresponding resource
 */
private MethodDeclaration createFactoryMethod(AST ast, IMethodBinding ctorBinding, ASTRewrite unitRewriter) throws CoreException{
	MethodDeclaration		newMethod= ast.newMethodDeclaration();
	SimpleName				newMethodName= ast.newSimpleName(fNewMethodName);
	ClassInstanceCreation	newCtorCall= ast.newClassInstanceCreation();
	ReturnStatement			ret= ast.newReturnStatement();
	Block		body= ast.newBlock();
	List<Statement>		stmts= body.statements();
	String		retTypeName= ctorBinding.getName();

	createFactoryMethodSignature(ast, newMethod);

	newMethod.setName(newMethodName);
	newMethod.setBody(body);

	ITypeBinding declaringClass= fCtorBinding.getDeclaringClass();
	ITypeBinding[] ctorOwnerTypeParameters= declaringClass.getTypeParameters();

	setMethodReturnType(newMethod, retTypeName, ctorOwnerTypeParameters, ast);

	newMethod.modifiers().addAll(ASTNodeFactory.newModifiers(ast, Modifier.STATIC | Modifier.PUBLIC));

	setCtorTypeArguments(newCtorCall, retTypeName, ctorOwnerTypeParameters, ast);

	createFactoryMethodConstructorArgs(ast, newCtorCall);

	if (Modifier.isAbstract(declaringClass.getModifiers())) {
		AnonymousClassDeclaration decl= ast.newAnonymousClassDeclaration();
		IMethodBinding[] unimplementedMethods= getUnimplementedMethods(declaringClass);
		CodeGenerationSettings settings= JavaPreferencesSettings.getCodeGenerationSettings(fCUHandle.getJavaProject());
		ImportRewriteContext context= new ContextSensitiveImportRewriteContext(fFactoryCU, decl.getStartPosition(), fImportRewriter);
		for (int i= 0; i < unimplementedMethods.length; i++) {
			IMethodBinding unImplementedMethod= unimplementedMethods[i];
			MethodDeclaration newMethodDecl= StubUtility2.createImplementationStub(fCUHandle, unitRewriter, fImportRewriter, context, unImplementedMethod, unImplementedMethod.getDeclaringClass()
					.getName(), settings, false);
			decl.bodyDeclarations().add(newMethodDecl);
		}
		newCtorCall.setAnonymousClassDeclaration(decl);
	}

	ret.setExpression(newCtorCall);
	stmts.add(ret);

	return newMethod;
}
 

public static MethodDeclaration createDelegationStub(ICompilationUnit unit, ASTRewrite rewrite, ImportRewrite imports, ImportRewriteContext context, IMethodBinding delegate, IVariableBinding delegatingField, CodeGenerationSettings settings) throws CoreException {
	Assert.isNotNull(delegate);
	Assert.isNotNull(delegatingField);
	Assert.isNotNull(settings);

	AST ast= rewrite.getAST();

	MethodDeclaration decl= ast.newMethodDeclaration();
	decl.modifiers().addAll(ASTNodeFactory.newModifiers(ast, delegate.getModifiers() & ~Modifier.SYNCHRONIZED & ~Modifier.ABSTRACT & ~Modifier.NATIVE));

	decl.setName(ast.newSimpleName(delegate.getName()));
	decl.setConstructor(false);

	createTypeParameters(imports, context, ast, delegate, decl);

	decl.setReturnType2(imports.addImport(delegate.getReturnType(), ast, context));

	List<SingleVariableDeclaration> params= createParameters(unit.getJavaProject(), imports, context, ast, delegate, null, decl);

	createThrownExceptions(decl, delegate, imports, context, ast);

	Block body= ast.newBlock();
	decl.setBody(body);

	String delimiter= StubUtility.getLineDelimiterUsed(unit);

	Statement statement= null;
	MethodInvocation invocation= ast.newMethodInvocation();
	invocation.setName(ast.newSimpleName(delegate.getName()));
	List<Expression> arguments= invocation.arguments();
	for (int i= 0; i < params.size(); i++)
		arguments.add(ast.newSimpleName(params.get(i).getName().getIdentifier()));
	if (settings.useKeywordThis) {
		FieldAccess access= ast.newFieldAccess();
		access.setExpression(ast.newThisExpression());
		access.setName(ast.newSimpleName(delegatingField.getName()));
		invocation.setExpression(access);
	} else
		invocation.setExpression(ast.newSimpleName(delegatingField.getName()));
	if (delegate.getReturnType().isPrimitive() && delegate.getReturnType().getName().equals("void")) {//$NON-NLS-1$
		statement= ast.newExpressionStatement(invocation);
	} else {
		ReturnStatement returnStatement= ast.newReturnStatement();
		returnStatement.setExpression(invocation);
		statement= returnStatement;
	}
	body.statements().add(statement);

	ITypeBinding declaringType= delegatingField.getDeclaringClass();
	if (declaringType == null) { // can be null for
		return decl;
	}

	String qualifiedName= declaringType.getQualifiedName();
	IPackageBinding packageBinding= declaringType.getPackage();
	if (packageBinding != null) {
		if (packageBinding.getName().length() > 0 && qualifiedName.startsWith(packageBinding.getName()))
			qualifiedName= qualifiedName.substring(packageBinding.getName().length());
	}

	if (settings.createComments) {
		/*
		 * TODO: have API for delegate method comments This is an inlined
		 * version of
		 * {@link CodeGeneration#getMethodComment(ICompilationUnit, String, MethodDeclaration, IMethodBinding, String)}
		 */
		delegate= delegate.getMethodDeclaration();
		String declaringClassQualifiedName= delegate.getDeclaringClass().getQualifiedName();
		String linkToMethodName= delegate.getName();
		String[] parameterTypesQualifiedNames= StubUtility.getParameterTypeNamesForSeeTag(delegate);
		String string= StubUtility.getMethodComment(unit, qualifiedName, decl, delegate.isDeprecated(), linkToMethodName, declaringClassQualifiedName, parameterTypesQualifiedNames, true, delimiter);
		if (string != null) {
			Javadoc javadoc= (Javadoc) rewrite.createStringPlaceholder(string, ASTNode.JAVADOC);
			decl.setJavadoc(javadoc);
		}
	}
	return decl;
}
 

private void createIntermediaryMethod() throws CoreException {

		CompilationUnitRewrite imRewrite= getCachedCURewrite(fIntermediaryType.getCompilationUnit());
		AST ast= imRewrite.getAST();
		MethodDeclaration intermediary= ast.newMethodDeclaration();

		// Intermediary class is non-anonymous
		AbstractTypeDeclaration type= (AbstractTypeDeclaration)typeToDeclaration(fIntermediaryType, imRewrite.getRoot());

		// Name
		intermediary.setName(ast.newSimpleName(fIntermediaryMethodName));

		// Flags
		List<IExtendedModifier> modifiers= intermediary.modifiers();
		if (!fIntermediaryType.isInterface()) {
			modifiers.add(imRewrite.getAST().newModifier(ModifierKeyword.PUBLIC_KEYWORD));
		}
		modifiers.add(imRewrite.getAST().newModifier(ModifierKeyword.STATIC_KEYWORD));

		// Parameters
		String targetParameterName= StubUtility.suggestArgumentName(getProject(), fIntermediaryFirstParameterType.getName(), fTargetMethod.getParameterNames());

		ImportRewriteContext context= new ContextSensitiveImportRewriteContext(type, imRewrite.getImportRewrite());
		if (!isStaticTarget()) {
			// Add first param
			SingleVariableDeclaration parameter= imRewrite.getAST().newSingleVariableDeclaration();
			Type t= imRewrite.getImportRewrite().addImport(fIntermediaryFirstParameterType, imRewrite.getAST(), context);
			if (fIntermediaryFirstParameterType.isGenericType()) {
				ParameterizedType parameterized= imRewrite.getAST().newParameterizedType(t);
				ITypeBinding[] typeParameters= fIntermediaryFirstParameterType.getTypeParameters();
				for (int i= 0; i < typeParameters.length; i++)
					parameterized.typeArguments().add(imRewrite.getImportRewrite().addImport(typeParameters[i], imRewrite.getAST()));
				t= parameterized;
			}
			parameter.setType(t);
			parameter.setName(imRewrite.getAST().newSimpleName(targetParameterName));
			intermediary.parameters().add(parameter);
		}
		// Add other params
		copyArguments(intermediary, imRewrite);

		// Add type parameters of declaring type (and enclosing types)
		if (!isStaticTarget() && fIntermediaryFirstParameterType.isGenericType())
			addTypeParameters(imRewrite, intermediary.typeParameters(), fIntermediaryFirstParameterType);

		// Add type params of method
		copyTypeParameters(intermediary, imRewrite);

		// Return type
		intermediary.setReturnType2(imRewrite.getImportRewrite().addImport(fTargetMethodBinding.getReturnType(), ast, context));

		// Exceptions
		copyExceptions(intermediary, imRewrite);

		// Body
		MethodInvocation invocation= imRewrite.getAST().newMethodInvocation();
		invocation.setName(imRewrite.getAST().newSimpleName(fTargetMethod.getElementName()));
		if (isStaticTarget()) {
			Type importedType= imRewrite.getImportRewrite().addImport(fTargetMethodBinding.getDeclaringClass(), ast, context);
			invocation.setExpression(ASTNodeFactory.newName(ast, ASTNodes.asString(importedType)));
		} else {
			invocation.setExpression(imRewrite.getAST().newSimpleName(targetParameterName));
		}
		copyInvocationParameters(invocation, ast);
		Statement call= encapsulateInvocation(intermediary, invocation);

		final Block body= imRewrite.getAST().newBlock();
		body.statements().add(call);
		intermediary.setBody(body);

		// method comment
		ICompilationUnit targetCU= imRewrite.getCu();
		if (StubUtility.doAddComments(targetCU.getJavaProject())) {
			String comment= CodeGeneration.getMethodComment(targetCU, getIntermediaryTypeName(), intermediary, null, StubUtility.getLineDelimiterUsed(targetCU));
			if (comment != null) {
				Javadoc javadoc= (Javadoc) imRewrite.getASTRewrite().createStringPlaceholder(comment, ASTNode.JAVADOC);
				intermediary.setJavadoc(javadoc);
			}
		}

		// Add the completed method to the intermediary type:
		ChildListPropertyDescriptor typeBodyDeclarationsProperty= typeToBodyDeclarationProperty(fIntermediaryType, imRewrite.getRoot());

		ListRewrite bodyDeclarationsListRewrite= imRewrite.getASTRewrite().getListRewrite(type, typeBodyDeclarationsProperty);
		bodyDeclarationsListRewrite.insertAt(intermediary, ASTNodes.getInsertionIndex(intermediary, type.bodyDeclarations()), imRewrite
				.createGroupDescription(RefactoringCoreMessages.IntroduceIndirectionRefactoring_group_description_create_new_method));
	}
 

private void addBuilderMethod(AST ast, ListRewrite listRewrite, TypeDeclaration typeDeclaration, TypeDeclaration builderType) {
    Block builderMethodBlock = blockWithNewBuilderCreationFragment.createReturnBlock(ast, builderType);
    MethodDeclaration builderMethod = builderMethodDefinitionCreatorFragment.createBuilderMethod(ast, typeDeclaration, builderType.getName().toString());
    builderMethod.setBody(builderMethodBlock);
    listRewrite.insertLast(builderMethod, null);
}