Java Code Examples for org.eclipse.jdt.core.dom.ReturnStatement#setExpression()

private Block createWithMethodBody(AST ast, BuilderField builderField) {
    String originalFieldName = builderField.getOriginalFieldName();
    String builderFieldName = builderField.getBuilderFieldName();

    Block newBlock = ast.newBlock();
    ReturnStatement builderReturnStatement = ast.newReturnStatement();
    builderReturnStatement.setExpression(ast.newThisExpression());

    Assignment newAssignment = ast.newAssignment();

    FieldAccess fieldAccess = ast.newFieldAccess();
    fieldAccess.setExpression(ast.newThisExpression());
    fieldAccess.setName(ast.newSimpleName(originalFieldName));
    newAssignment.setLeftHandSide(fieldAccess);
    newAssignment.setRightHandSide(ast.newSimpleName(builderFieldName));

    newBlock.statements().add(ast.newExpressionStatement(newAssignment));
    newBlock.statements().add(builderReturnStatement);
    return newBlock;
}
 

private Block createWithMethodBody(AST ast, String originalFieldName, String builderFieldName) {
    Block newBlock = ast.newBlock();
    ReturnStatement builderReturnStatement = ast.newReturnStatement();
    builderReturnStatement.setExpression(ast.newThisExpression());

    Assignment newAssignment = ast.newAssignment();

    FieldAccess fieldAccess = ast.newFieldAccess();
    fieldAccess.setExpression(ast.newThisExpression());
    fieldAccess.setName(ast.newSimpleName(originalFieldName));
    newAssignment.setLeftHandSide(fieldAccess);
    newAssignment.setRightHandSide(ast.newSimpleName(builderFieldName));

    newBlock.statements().add(ast.newExpressionStatement(newAssignment));
    newBlock.statements().add(builderReturnStatement);
    return newBlock;
}
 

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;
}
 

public Block createBody(AST ast, TypeDeclaration originalType) {
    ClassInstanceCreation newClassInstanceCreation = ast.newClassInstanceCreation();
    newClassInstanceCreation.setType(ast.newSimpleType(ast.newName(originalType.getName().toString())));
    newClassInstanceCreation.arguments().add(ast.newThisExpression());

    ReturnStatement statement = ast.newReturnStatement();
    statement.setExpression(newClassInstanceCreation);

    Block block = ast.newBlock();
    block.statements().add(statement);
    return block;
}
 

public Block createReturnBlock(AST ast, TypeDeclaration builderType) {
    Block builderMethodBlock = ast.newBlock();
    ReturnStatement returnStatement = ast.newReturnStatement();
    ClassInstanceCreation newClassInstanceCreation = ast.newClassInstanceCreation();
    newClassInstanceCreation.setType(ast.newSimpleType(ast.newName(builderType.getName().toString())));
    returnStatement.setExpression(newClassInstanceCreation);
    builderMethodBlock.statements().add(returnStatement);
    return builderMethodBlock;
}
 

private Statement encapsulateInvocation(MethodDeclaration declaration, MethodInvocation invocation) {
	final Type type= declaration.getReturnType2();

	if (type == null || (type instanceof PrimitiveType && PrimitiveType.VOID.equals( ((PrimitiveType) type).getPrimitiveTypeCode())))
		return invocation.getAST().newExpressionStatement(invocation);

	ReturnStatement statement= invocation.getAST().newReturnStatement();
	statement.setExpression(invocation);
	return statement;
}
 

/**
 * Creates a new return statement for the method invocation.
 *
 * @param invocation the method invocation to create a return statement for
 * @return the corresponding statement
 */
private ReturnStatement createReturnStatement(final MethodInvocation invocation) {
	Assert.isNotNull(invocation);
	final ReturnStatement statement= invocation.getAST().newReturnStatement();
	statement.setExpression(invocation);
	return statement;
}
 

/**
 * Creates a new return statement for the method invocation.
 *
 * @param invocation the method invocation to create a return statement for
 * @return the corresponding statement
 */
private ReturnStatement createReturnStatement(final MethodInvocation invocation) {
	Assert.isNotNull(invocation);
	final ReturnStatement statement= invocation.getAST().newReturnStatement();
	statement.setExpression(invocation);
	return statement;
}
 

private static Block createMethodStub(final MethodDeclaration method, final AST ast) {
	final Block body= ast.newBlock();
	final Expression expression= ASTNodeFactory.newDefaultExpression(ast, method.getReturnType2(), method.getExtraDimensions());
	if (expression != null) {
		final ReturnStatement returnStatement= ast.newReturnStatement();
		returnStatement.setExpression(expression);
		body.statements().add(returnStatement);
	}
	return body;
}
 

private MethodDeclaration createGetterMethod(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(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) {
		body = body.substring(0, body.lastIndexOf(lineDelimiter));
		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 Statement createReturningIfStatement(boolean result, Expression condition) {
	IfStatement firstIf= fAst.newIfStatement();
	firstIf.setExpression(condition);

	ReturnStatement returner= fAst.newReturnStatement();
	returner.setExpression(fAst.newBooleanLiteral(result));
	firstIf.setThenStatement(getThenStatement(returner));
	return firstIf;
}
 

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 ReturnStatement getReturnFalse() {
	ReturnStatement falseReturn= fAst.newReturnStatement();
	falseReturn.setExpression(fAst.newBooleanLiteral(false));
	return falseReturn;
}
 

private MethodDeclaration createHashCodeMethod() throws CoreException {

		MethodDeclaration hashCodeMethod= fAst.newMethodDeclaration();
		hashCodeMethod.modifiers().addAll(ASTNodeFactory.newModifiers(fAst, Modifier.PUBLIC));
		hashCodeMethod.setName(fAst.newSimpleName(METHODNAME_HASH_CODE));
		hashCodeMethod.setConstructor(false);
		hashCodeMethod.setReturnType2(fAst.newPrimitiveType(PrimitiveType.INT));

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

		// PRIME NUMBER
		VariableDeclarationFragment frag= fAst.newVariableDeclarationFragment();
		frag.setName(fAst.newSimpleName(VARIABLE_NAME_PRIME));
		frag.setInitializer(fAst.newNumberLiteral(PRIME_NUMBER));

		VariableDeclarationStatement primeNumberDeclaration= fAst.newVariableDeclarationStatement(frag);
		primeNumberDeclaration.modifiers().add(fAst.newModifier(ModifierKeyword.FINAL_KEYWORD));
		primeNumberDeclaration.setType(fAst.newPrimitiveType(PrimitiveType.INT));
		body.statements().add(primeNumberDeclaration);

		// RESULT
		VariableDeclarationFragment fragment= fAst.newVariableDeclarationFragment();
		fragment.setName(fAst.newSimpleName(VARIABLE_NAME_RESULT));

		VariableDeclarationStatement resultDeclaration= fAst.newVariableDeclarationStatement(fragment);
		resultDeclaration.setType(fAst.newPrimitiveType(PrimitiveType.INT));
		body.statements().add(resultDeclaration);

		if (needsNoSuperCall(fType, METHODNAME_HASH_CODE, new ITypeBinding[0])) {
			fragment.setInitializer(fAst.newNumberLiteral(INITIAL_HASHCODE_VALUE));
		} else {
			SuperMethodInvocation invoc= fAst.newSuperMethodInvocation();
			invoc.setName(fAst.newSimpleName(METHODNAME_HASH_CODE));
			fragment.setInitializer(invoc);
		}

		if (isMemberType()) {
			body.statements().add(createAddOuterHashCode());
		}

		for (int i= 0; i < fFields.length; i++) {
			if (fFields[i].getType().isPrimitive()) {
				Statement[] sts= createAddSimpleHashCode(fFields[i].getType(), new IHashCodeAccessProvider() {

					public Expression getThisAccess(String name) {
						return getThisAccessForHashCode(name);
					}

				}, fFields[i].getName(), false);
				for (int j= 0; j < sts.length; j++) {
					body.statements().add(sts[j]);
				}
			} else if (fFields[i].getType().isArray())
				body.statements().add(createAddArrayHashCode(fFields[i]));
			else
				body.statements().add(createAddQualifiedHashCode(fFields[i]));
		}

		// the last return:
		ReturnStatement endReturn= fAst.newReturnStatement();
		endReturn.setExpression(fAst.newSimpleName(VARIABLE_NAME_RESULT));
		body.statements().add(endReturn);

		// method comment
		if (fSettings != null) {
			ITypeBinding object= fAst.resolveWellKnownType(JAVA_LANG_OBJECT);
			IMethodBinding[] objms= object.getDeclaredMethods();
			IMethodBinding objectMethod= null;
			for (int i= 0; i < objms.length; i++) {
				if (objms[i].getName().equals(METHODNAME_HASH_CODE) && objms[i].getParameterTypes().length == 0)
					objectMethod= objms[i];
			}
			createMethodComment(hashCodeMethod, objectMethod);
		}

		return hashCodeMethod;
	}
 

@Override
protected ASTRewrite getRewrite() throws CoreException {
	CompilationUnit astRoot = ASTResolving.findParentCompilationUnit(fNode);
	ASTNode boundNode = astRoot.findDeclaringNode(fBinding);
	ASTNode declNode = null;

	if (boundNode != null) {
		declNode = boundNode; // is same CU
	} else {
		//setSelectionDescription(selectionDescription);
		CompilationUnit newRoot = ASTResolving.createQuickFixAST(getCompilationUnit(), null);
		declNode = newRoot.findDeclaringNode(fBinding.getKey());
	}
	if (declNode != null) {
		AST ast = declNode.getAST();
		ASTRewrite rewrite = ASTRewrite.create(ast);

		if (declNode.getNodeType() == ASTNode.VARIABLE_DECLARATION_FRAGMENT) {
			VariableDeclarationFragment fragment = (VariableDeclarationFragment) declNode;
			ASTNode parent = declNode.getParent();
			if (parent instanceof FieldDeclaration) {
				FieldDeclaration fieldDecl = (FieldDeclaration) parent;
				if (fieldDecl.fragments().size() > 1 && (fieldDecl.getParent() instanceof AbstractTypeDeclaration)) { // split
					VariableDeclarationRewrite.rewriteModifiers(fieldDecl, new VariableDeclarationFragment[] { fragment }, fIncludedModifiers, fExcludedModifiers, rewrite, null);
					return rewrite;
				}
			} else if (parent instanceof VariableDeclarationStatement) {
				VariableDeclarationStatement varDecl = (VariableDeclarationStatement) parent;
				if (varDecl.fragments().size() > 1 && (varDecl.getParent() instanceof Block)) { // split
					VariableDeclarationRewrite.rewriteModifiers(varDecl, new VariableDeclarationFragment[] { fragment }, fIncludedModifiers, fExcludedModifiers, rewrite, null);
					return rewrite;
				}
			} else if (parent instanceof VariableDeclarationExpression) {
				// can't separate
			}
			declNode = parent;
		} else if (declNode.getNodeType() == ASTNode.METHOD_DECLARATION) {
			MethodDeclaration methodDecl = (MethodDeclaration) declNode;
			if (!methodDecl.isConstructor()) {
				IMethodBinding methodBinding = methodDecl.resolveBinding();
				if (methodDecl.getBody() == null && methodBinding != null && Modifier.isAbstract(methodBinding.getModifiers()) && Modifier.isStatic(fIncludedModifiers)) {
					// add body
					ICompilationUnit unit = getCompilationUnit();
					String delimiter = unit.findRecommendedLineSeparator();
					String bodyStatement = ""; //$NON-NLS-1$

					Block body = ast.newBlock();
					rewrite.set(methodDecl, MethodDeclaration.BODY_PROPERTY, body, null);
					Type returnType = methodDecl.getReturnType2();
					if (returnType != null) {
						Expression expression = ASTNodeFactory.newDefaultExpression(ast, returnType, methodDecl.getExtraDimensions());
						if (expression != null) {
							ReturnStatement returnStatement = ast.newReturnStatement();
							returnStatement.setExpression(expression);
							bodyStatement = ASTNodes.asFormattedString(returnStatement, 0, delimiter, unit.getJavaProject().getOptions(true));
						}
					}
					String placeHolder = CodeGeneration.getMethodBodyContent(unit, methodBinding.getDeclaringClass().getName(), methodBinding.getName(), false, bodyStatement, delimiter);
					if (placeHolder != null) {
						ReturnStatement todoNode = (ReturnStatement) rewrite.createStringPlaceholder(placeHolder, ASTNode.RETURN_STATEMENT);
						body.statements().add(todoNode);
					}
				}
			}
		}
		ModifierRewrite listRewrite = ModifierRewrite.create(rewrite, declNode);
		PositionInformation trackedDeclNode = listRewrite.setModifiers(fIncludedModifiers, fExcludedModifiers, null);

		LinkedProposalPositionGroupCore positionGroup = new LinkedProposalPositionGroupCore("group"); //$NON-NLS-1$
		positionGroup.addPosition(trackedDeclNode);
		getLinkedProposalModel().addPositionGroup(positionGroup);

		if (boundNode != null) {
			// only set end position if in same CU
			setEndPosition(rewrite.track(fNode));
		}
		return rewrite;
	}
	return null;
}
 

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;
}
 

private MethodDeclaration createSetterMethod(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(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) {
		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;
}
 

@Override
public MethodDeclaration generateToStringMethod() throws CoreException {
	initialize();

	//ToStringBuilder builder= new ToStringBuilder(this);
	String builderVariableName= createNameSuggestion(getContext().getCustomBuilderVariableName(), NamingConventions.VK_LOCAL);
	VariableDeclarationFragment fragment= fAst.newVariableDeclarationFragment();
	fragment.setName(fAst.newSimpleName(builderVariableName));
	ClassInstanceCreation classInstance= fAst.newClassInstanceCreation();
	Name typeName= addImport(getContext().getCustomBuilderClass());
	classInstance.setType(fAst.newSimpleType(typeName));
	classInstance.arguments().add(fAst.newThisExpression());
	fragment.setInitializer(classInstance);
	VariableDeclarationStatement vStatement= fAst.newVariableDeclarationStatement(fragment);
	vStatement.setType(fAst.newSimpleType((Name)ASTNode.copySubtree(fAst, typeName)));
	toStringMethod.getBody().statements().add(vStatement);

	/* expression for accumulating chained calls */
	Expression expression= null;

	for (int i= 0; i < getContext().getSelectedMembers().length; i++) {
		//builder.append("member", member);
		MethodInvocation appendInvocation= createAppendMethodForMember(getContext().getSelectedMembers()[i]);
		if (getContext().isSkipNulls() && !getMemberType(getContext().getSelectedMembers()[i]).isPrimitive()) {
			if (expression != null) {
				toStringMethod.getBody().statements().add(fAst.newExpressionStatement(expression));
				expression= null;
			}
			appendInvocation.setExpression(fAst.newSimpleName(builderVariableName));
			IfStatement ifStatement= fAst.newIfStatement();
			ifStatement.setExpression(createInfixExpression(createMemberAccessExpression(getContext().getSelectedMembers()[i], true, true), Operator.NOT_EQUALS, fAst.newNullLiteral()));
			ifStatement.setThenStatement(createOneStatementBlock(appendInvocation));
			toStringMethod.getBody().statements().add(ifStatement);
		} else {
			if (expression != null) {
				appendInvocation.setExpression(expression);
			} else {
				appendInvocation.setExpression(fAst.newSimpleName(builderVariableName));
			}
			if (getContext().isCustomBuilderChainedCalls() && canChainLastAppendCall) {
				expression= appendInvocation;
			} else {
				expression= null;
				toStringMethod.getBody().statements().add(fAst.newExpressionStatement(appendInvocation));
			}
		}
	}

	if (expression != null) {
		toStringMethod.getBody().statements().add(fAst.newExpressionStatement(expression));
	}
	// return builder.toString();
	ReturnStatement rStatement= fAst.newReturnStatement();
	rStatement.setExpression(createMethodInvocation(builderVariableName, getContext().getCustomBuilderResultMethod(), null));
	toStringMethod.getBody().statements().add(rStatement);

	complete();

	return toStringMethod;
}
 

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 ReturnStatement createReturnStatementWithInstantiation(AST ast, ClassInstanceCreation builderIntantiation) {
    ReturnStatement returnStatement = ast.newReturnStatement();
    returnStatement.setExpression(builderIntantiation);
    return returnStatement;
}