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: *
059: * @author Brian S O'Neill
060: * @version
061: * <!--$$Revision:--> 16 <!-- $-->, <!--$$JustDate:--> 9/07/00 <!-- $-->
062: */
063: public abstract class CallExpression extends Expression {
064: private Name mTarget;
065: private ExpressionList mParams;
066: private Statement mInitializer;
067: private Block mSubParam;
068: private boolean mVoidPermitted = false;
069:
070: public CallExpression(SourceInfo info, Name target,
071: ExpressionList params, Block subParam) {
072: super (info);
073:
074: mTarget = target;
075: mParams = params;
076: mSubParam = subParam;
077: }
078:
079: public Object clone() {
080: CallExpression ce = (CallExpression) super .clone();
081: ce.mParams = (ExpressionList) mParams.clone();
082: if (mInitializer != null) {
083: ce.mInitializer = (Statement) mInitializer.clone();
084: }
085: if (mSubParam != null) {
086: ce.mSubParam = (Block) mSubParam.clone();
087: }
088: return ce;
089: }
090:
091: public boolean isExceptionPossible() {
092: return true;
093: }
094:
095: public Name getTarget() {
096: return mTarget;
097: }
098:
099: public ExpressionList getParams() {
100: return mParams;
101: }
102:
103: /**
104: * Initializer is a section of code that executes before the substitution
105: * param. By default, it is null. If a CallExpression has a substitution
106: * param, a type checker may define an initializer.
107: */
108: public Statement getInitializer() {
109: return mInitializer;
110: }
111:
112: public Block getSubstitutionParam() {
113: return mSubParam;
114: }
115:
116: /**
117: * A CallExpression is permitted to return void only in certain cases.
118: * By default this method returns false.
119: */
120: public boolean isVoidPermitted() {
121: return mVoidPermitted;
122: }
123:
124: public void setParams(ExpressionList params) {
125: mParams = params;
126: }
127:
128: public void setInitializer(Statement stmt) {
129: mInitializer = stmt;
130: }
131:
132: public void setSubstitutionParam(Block subParam) {
133: mSubParam = subParam;
134: }
135:
136: public void setVoidPermitted(boolean b) {
137: mVoidPermitted = b;
138: }
139: }
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