| /* |
| // Licensed to Julian Hyde under one or more contributor license |
| // agreements. See the NOTICE file distributed with this work for |
| // additional information regarding copyright ownership. |
| // |
| // Julian Hyde 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 net.hydromatic.linq4j.expressions; |
| |
| import java.lang.reflect.Modifier; |
| |
| /** |
| * Expression that declares and optionally initializes a variable. |
| */ |
| public class DeclarationStatement extends Statement { |
| public final int modifiers; |
| public final ParameterExpression parameter; |
| public final Expression initializer; |
| |
| public DeclarationStatement(int modifiers, ParameterExpression parameter, |
| Expression initializer) { |
| super(ExpressionType.Declaration, Void.TYPE); |
| this.modifiers = modifiers; |
| this.parameter = parameter; |
| this.initializer = initializer; |
| } |
| |
| @Override |
| public DeclarationStatement accept(Visitor visitor) { |
| // do not visit parameter - visit may not return a ParameterExpression |
| Expression initializer = this.initializer != null |
| ? this.initializer.accept(visitor) |
| : null; |
| return visitor.visit(this, parameter, initializer); |
| } |
| |
| @Override |
| void accept0(ExpressionWriter writer) { |
| final String modifiers = Modifier.toString(this.modifiers); |
| if (!modifiers.isEmpty()) { |
| writer.append(modifiers).append(' '); |
| } |
| writer.append(parameter.type).append(' ').append(parameter.name); |
| if (initializer != null) { |
| writer.append(" = ").append(initializer); |
| } |
| writer.append(';'); |
| writer.newlineAndIndent(); |
| } |
| |
| public void accept2(ExpressionWriter writer, boolean withType) { |
| if (withType) { |
| final String modifiers = Modifier.toString(this.modifiers); |
| if (!modifiers.isEmpty()) { |
| writer.append(modifiers).append(' '); |
| } |
| writer.append(parameter.type).append(' '); |
| } else { |
| writer.append(", "); |
| } |
| writer.append(parameter.name); |
| if (initializer != null) { |
| writer.append(" = ").append(initializer); |
| } |
| } |
| } |
| |
| // End DeclarationStatement.java |