001: /* ====================================================================
002: * Tea - Copyright (c) 1997-2000 Walt Disney Internet Group
003: * ====================================================================
004: * The Tea Software License, Version 1.1
005: *
006: * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
007: *
008: * Redistribution and use in source and binary forms, with or without
009: * modification, are permitted provided that the following conditions
010: * are met:
011: *
012: * 1. Redistributions of source code must retain the above copyright
013: * notice, this list of conditions and the following disclaimer.
014: *
015: * 2. Redistributions in binary form must reproduce the above copyright
016: * notice, this list of conditions and the following disclaimer in
017: * the documentation and/or other materials provided with the
018: * distribution.
019: *
020: * 3. The end-user documentation included with the redistribution,
021: * if any, must include the following acknowledgment:
022: * "This product includes software developed by the
023: * Walt Disney Internet Group (http://opensource.go.com/)."
024: * Alternately, this acknowledgment may appear in the software itself,
025: * if and wherever such third-party acknowledgments normally appear.
026: *
027: * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
028: * not be used to endorse or promote products derived from this
029: * software without prior written permission. For written
030: * permission, please contact opensource@dig.com.
031: *
032: * 5. Products derived from this software may not be called "Tea",
033: * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
034: * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
035: * written permission of the Walt Disney Internet Group.
036: *
037: * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
038: * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
039: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
040: * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
041: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
042: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
043: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
044: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
045: * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
046: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
047: * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
048: * ====================================================================
049: *
050: * For more information about Tea, please see http://opensource.go.com/.
051: */
052:
053: package com.go.tea.parsetree;
054:
055: import com.go.tea.compiler.SourceInfo;
056:
057: /******************************************************************************
058: * A Block is a StatementList that most likely appeared in the source file
059: * delimited by braces. A Block may contain initializer statements, inserted by
060: * a type checker, to be executed at the beginning of the boock. A Block may
061: * also contain a finalizer, inserted by a type checker, to be executed at the
062: * end of the Block.
063: *
064: * @author Brian S O'Neill
065: * @version
066: * <!--$$Revision:--> 20 <!-- $-->, <!--$$JustDate:--> 9/07/00 <!-- $-->
067: */
068: public class Block extends StatementList {
069: private Statement mInitializer;
070: private Statement mFinalizer;
071:
072: public Block(SourceInfo info, Statement[] statements) {
073: super (info, statements);
074: }
075:
076: public Block(SourceInfo info) {
077: super (info, new Statement[0]);
078: }
079:
080: public Block(Statement stmt) {
081: super (stmt.getSourceInfo(), new Statement[] { stmt });
082: }
083:
084: public Object accept(NodeVisitor visitor) {
085: return visitor.visit(this );
086: }
087:
088: public Object clone() {
089: Block b = (Block) super .clone();
090: if (mInitializer != null) {
091: b.mInitializer = (Statement) mInitializer.clone();
092: }
093: if (mFinalizer != null) {
094: b.mFinalizer = (Statement) mFinalizer.clone();
095: }
096: return b;
097: }
098:
099: /**
100: * Initializer is executed at the beginning of the block and may be defined
101: * by a type checker in order to correctly manage variable types.
102: */
103: public Statement getInitializer() {
104: return mInitializer;
105: }
106:
107: /**
108: * Finalizer is executed at the end of the block and may be defined by a
109: * type checker in order to correctly manage variable types.
110: */
111: public Statement getFinalizer() {
112: return mFinalizer;
113: }
114:
115: public void setInitializer(Statement initializer) {
116: mInitializer = initializer;
117: }
118:
119: public void setFinalizer(Statement finalizer) {
120: mFinalizer = finalizer;
121: }
122: }
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