| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.codehaus.groovy.ast.stmt; |
| |
| import org.codehaus.groovy.ast.GroovyCodeVisitor; |
| import org.codehaus.groovy.ast.expr.ConstantExpression; |
| import org.codehaus.groovy.ast.expr.Expression; |
| |
| import static org.codehaus.groovy.ast.tools.GeneralUtils.nullX; |
| |
| /** |
| * A return statement |
| */ |
| public class ReturnStatement extends Statement { |
| /** |
| * Only used for synthetic return statements emitted by the compiler. |
| * For comparisons use isReturningNullOrVoid() instead. |
| */ |
| public static final ReturnStatement RETURN_NULL_OR_VOID = new ReturnStatement(nullX()); |
| |
| private Expression expression; |
| |
| public ReturnStatement(final ExpressionStatement statement) { |
| this(statement.getExpression()); |
| copyStatementLabels(statement); |
| } |
| |
| public ReturnStatement(final Expression expression) { |
| setExpression(expression); |
| } |
| |
| public Expression getExpression() { |
| return expression; |
| } |
| |
| public void setExpression(final Expression expression) { |
| this.expression = expression; |
| } |
| |
| @Override |
| public String getText() { |
| return "return " + expression.getText(); |
| } |
| |
| public boolean isReturningNullOrVoid() { |
| return expression instanceof ConstantExpression |
| && ((ConstantExpression) expression).isNullExpression(); |
| } |
| |
| @Override |
| public String toString() { |
| return super.toString() + "[expression:" + expression + "]"; |
| } |
| |
| @Override |
| public void visit(final GroovyCodeVisitor visitor) { |
| visitor.visitReturnStatement(this); |
| } |
| } |