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/*
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* Copyright 1994-2003 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package sun.tools.tree;
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import sun.tools.java.*;
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import java.util.Hashtable;
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/**
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* Parenthesised expressions.
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*
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* WARNING: The contents of this source file are not part of any
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* supported API. Code that depends on them does so at its own risk:
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* they are subject to change or removal without notice.
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*/
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public
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class ExprExpression extends UnaryExpression {
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/**
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* Constructor
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*/
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public ExprExpression(long where, Expression right) {
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super(EXPR, where, right.type, right);
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}
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/**
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* Check a condition. We must pass it on to our unparenthesised form.
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*/
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public void checkCondition(Environment env, Context ctx, Vset vset,
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Hashtable exp, ConditionVars cvars) {
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right.checkCondition(env, ctx, vset, exp, cvars);
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type = right.type;
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}
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/**
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* Check the expression if it appears as an lvalue.
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* We just pass it on to our unparenthesized subexpression.
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* (Part of fix for 4090372)
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*/
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public Vset checkAssignOp(Environment env, Context ctx,
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Vset vset, Hashtable exp, Expression outside) {
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vset = right.checkAssignOp(env, ctx, vset, exp, outside);
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type = right.type;
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return vset;
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}
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/**
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* Delegate to our subexpression.
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* (Part of fix for 4090372)
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*/
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public FieldUpdater getUpdater(Environment env, Context ctx) {
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return right.getUpdater(env, ctx);
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}
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// Allow (x) = 9;
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//
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// I will hold off on this until I'm sure about it. Nobody's
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// going to clammer for this one.
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//
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// public Vset checkLHS(Environment env, Context ctx,
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// Vset vset, Hashtable exp) {
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// vset = right.check(env, ctx, vset, exp);
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// type = right.type;
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// return vset;
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// }
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public boolean isNull() {
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return right.isNull();
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}
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public boolean isNonNull() {
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return right.isNonNull();
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}
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// Probably not necessary
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public Object getValue() {
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return right.getValue();
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}
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/**
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* Delegate to our subexpression.
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* See the comment in AddExpression#inlineValueSB() for
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* information about this method.
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*/
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protected StringBuffer inlineValueSB(Environment env,
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Context ctx,
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StringBuffer buffer) {
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return right.inlineValueSB(env, ctx, buffer);
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}
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/**
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* Select the type of the expression
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*/
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void selectType(Environment env, Context ctx, int tm) {
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type = right.type;
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}
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/**
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* Simplify
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*/
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Expression simplify() {
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return right;
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}
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}
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