/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
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package sun.tools.tree;

import sun.tools.java.*;
import sun.tools.asm.Assembler;

WARNING: The contents of this source file are not part of any supported API. Code that depends on them does so at its own risk: they are subject to change or removal without notice.
/** * WARNING: The contents of this source file are not part of any * supported API. Code that depends on them does so at its own risk: * they are subject to change or removal without notice. */
public class BitNotExpression extends UnaryExpression {
Constructor
/** * Constructor */
public BitNotExpression(long where, Expression right) { super(BITNOT, where, right.type, right); }
Select the type of the expression
/** * Select the type of the expression */
void selectType(Environment env, Context ctx, int tm) { if ((tm & TM_LONG) != 0) { type = Type.tLong; } else { type = Type.tInt; } right = convert(env, ctx, type, right); }
Evaluate
/** * Evaluate */
Expression eval(int a) { return new IntExpression(where, ~a); } Expression eval(long a) { return new LongExpression(where, ~a); }
Simplify
/** * Simplify */
Expression simplify() { if (right.op == BITNOT) { return ((BitNotExpression)right).right; } return this; }
Code
/** * Code */
public void codeValue(Environment env, Context ctx, Assembler asm) { right.codeValue(env, ctx, asm); if (type.isType(TC_INT)) { asm.add(where, opc_ldc, new Integer(-1)); asm.add(where, opc_ixor); } else { asm.add(where, opc_ldc2_w, new Long(-1)); asm.add(where, opc_lxor); } } }