001    /*
002     $Id: BlockStatement.java 3419 2006-01-19 00:07:02Z blackdrag $
003    
004     Copyright 2003 (C) James Strachan and Bob Mcwhirter. All Rights Reserved.
005    
006     Redistribution and use of this software and associated documentation
007     ("Software"), with or without modification, are permitted provided
008     that the following conditions are met:
009    
010     1. Redistributions of source code must retain copyright
011        statements and notices.  Redistributions must also contain a
012        copy of this document.
013    
014     2. Redistributions in binary form must reproduce the
015        above copyright notice, this list of conditions and the
016        following disclaimer in the documentation and/or other
017        materials provided with the distribution.
018    
019     3. The name "groovy" must not be used to endorse or promote
020        products derived from this Software without prior written
021        permission of The Codehaus.  For written permission,
022        please contact info@codehaus.org.
023    
024     4. Products derived from this Software may not be called "groovy"
025        nor may "groovy" appear in their names without prior written
026        permission of The Codehaus. "groovy" is a registered
027        trademark of The Codehaus.
028    
029     5. Due credit should be given to The Codehaus -
030        http://groovy.codehaus.org/
031    
032     THIS SOFTWARE IS PROVIDED BY THE CODEHAUS AND CONTRIBUTORS
033     ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
034     NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
035     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
036     THE CODEHAUS OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
037     INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
038     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
039     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
040     HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
041     STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
042     ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
043     OF THE POSSIBILITY OF SUCH DAMAGE.
044    
045     */
046    package org.codehaus.groovy.ast.stmt;
047    
048    import java.util.ArrayList;
049    import java.util.Arrays;
050    import java.util.Iterator;
051    import java.util.List;
052    
053    import org.codehaus.groovy.ast.GroovyCodeVisitor;
054    import org.codehaus.groovy.ast.VariableScope;
055    
056    /**
057     * A list of statements
058     * 
059     * @author <a href="mailto:james@coredevelopers.net">James Strachan</a>
060     * @version $Revision: 3419 $
061     */
062    public class BlockStatement extends Statement {
063    
064        private List statements = new ArrayList();
065        private VariableScope scope;
066        
067        public BlockStatement() {
068            this(new ArrayList(), new VariableScope());
069        }
070        
071        public BlockStatement(List statements, VariableScope scope) {
072            this.statements = statements;
073            this.scope = scope;
074        }
075        
076        public BlockStatement(Statement[] statements, VariableScope scope) {
077            this.statements.addAll(Arrays.asList(statements));
078            this.scope = scope;
079        }
080    
081        public void visit(GroovyCodeVisitor visitor) {
082            visitor.visitBlockStatement(this);
083        }
084    
085        public List getStatements() {
086            return statements;
087        }
088    
089        public void addStatement(Statement statement) {
090            statements.add(statement);
091        }
092    
093        public void addStatements(List listOfStatements) {
094            statements.addAll(listOfStatements);
095        }
096    
097        public String toString() {
098            return super.toString() + statements;
099        }
100    
101        public String getText() {
102            StringBuffer buffer = new StringBuffer("{ ");
103            boolean first = true;
104            for (Iterator iter = statements.iterator(); iter.hasNext(); ) {
105                if (first) {
106                    first = false;
107                }
108                else {
109                    buffer.append("; ");
110                }
111                Statement statement = (Statement) iter.next();
112                buffer.append(statement.getText());
113            }
114            buffer.append(" }");
115            return buffer.toString();
116        }
117    
118        public boolean isEmpty() {
119            return statements.isEmpty();
120        }
121    
122        public void setVariableScope(VariableScope scope) {
123            this.scope = scope;
124        }
125        
126        public VariableScope getVariableScope() {
127            return scope;
128        }
129    }