com.google.gwt.dev.jjs.ast.JBlock Maven / Gradle / Ivy
/*
* 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.List;
/**
* A list of JStatements.
*/
public class JBlock extends JStatement {
private final List statements = new ArrayList();
public JBlock(SourceInfo info) {
super(info);
}
/**
* 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 toAdd) {
statements.addAll(index, toAdd);
}
/**
* Add statements to the end of this block.
*/
public void addStmts(List toAdd) {
statements.addAll(toAdd);
}
public void clear() {
statements.clear();
}
/**
* Return the statements in this block.
*
* It's not a copy. Changes to the list are modifications to this JBlock.
*/
public List 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;
}
}