/* |
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* Copyright (c) 1994, 2003, Oracle and/or its affiliates. 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. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* 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 sun.tools.asm.Assembler; |
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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 BitXorExpression extends BinaryBitExpression { |
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/** |
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* constructor |
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*/ |
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public BitXorExpression(long where, Expression left, Expression right) { |
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super(BITXOR, where, left, right); |
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} |
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/** |
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* Evaluate |
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*/ |
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Expression eval(boolean a, boolean b) { |
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return new BooleanExpression(where, a ^ b); |
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} |
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Expression eval(int a, int b) { |
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return new IntExpression(where, a ^ b); |
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} |
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Expression eval(long a, long b) { |
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return new LongExpression(where, a ^ b); |
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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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if (left.equals(true)) { |
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return new NotExpression(where, right); |
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} |
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if (right.equals(true)) { |
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return new NotExpression(where, left); |
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} |
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if (left.equals(false) || left.equals(0)) { |
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return right; |
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} |
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if (right.equals(false) || right.equals(0)) { |
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return left; |
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} |
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return this; |
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} |
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/** |
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* Code |
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*/ |
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void codeOperation(Environment env, Context ctx, Assembler asm) { |
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asm.add(where, opc_ixor + type.getTypeCodeOffset()); |
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} |
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} |