| /* |
| * Copyright 2007 Google Inc. |
| * |
| * Licensed 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 com.google.gwt.dev.jjs.ast; |
| |
| import com.google.gwt.dev.jjs.SourceInfo; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| |
| /** |
| * A list of <code>JStatements</code>. |
| */ |
| public class JBlock extends JStatement { |
| |
| private final List<JStatement> statements = new ArrayList<JStatement>(); |
| |
| public JBlock(SourceInfo info, JStatement... statements) { |
| super(info); |
| this.statements.addAll(Arrays.asList(statements)); |
| } |
| |
| /** |
| * Insert a statement into this block. |
| */ |
| public void addStmt(int index, JStatement toAdd) { |
| statements.add(index, toAdd); |
| } |
| |
| /** |
| * Add a statement to the end of this block. |
| */ |
| public void addStmt(JStatement toAdd) { |
| statements.add(toAdd); |
| } |
| |
| /** |
| * Insert a statements into this block. |
| */ |
| public void addStmts(int index, List<JStatement> toAdd) { |
| statements.addAll(index, toAdd); |
| } |
| |
| /** |
| * Add statements to the end of this block. |
| */ |
| public void addStmts(List<JStatement> toAdd) { |
| statements.addAll(toAdd); |
| } |
| |
| public void clear() { |
| statements.clear(); |
| } |
| |
| /** |
| * Return the statements in this block. |
| * |
| * <p>It's not a copy. Changes to the list are modifications to this JBlock. |
| */ |
| public List<JStatement> getStatements() { |
| return statements; |
| } |
| |
| /** |
| * Return true if the block contains no statements. |
| */ |
| public boolean isEmpty() { |
| return statements.isEmpty(); |
| } |
| |
| /** |
| * Removes the statement from this block at the specified index. |
| */ |
| public void removeStmt(int index) { |
| statements.remove(index); |
| } |
| |
| @Override |
| public void traverse(JVisitor visitor, Context ctx) { |
| if (visitor.visit(this, ctx)) { |
| visitor.acceptWithInsertRemove(statements); |
| } |
| visitor.endVisit(this, ctx); |
| } |
| |
| @Override |
| public boolean unconditionalControlBreak() { |
| for (JStatement stmt : statements) { |
| if (stmt.unconditionalControlBreak()) { |
| return true; |
| } |
| } |
| return false; |
| } |
| } |