| /* |
| * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. |
| * 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 |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package sun.tools.tree; |
| |
| import sun.tools.java.*; |
| |
| /** |
| * 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 BinaryShiftExpression extends BinaryExpression { |
| /** |
| * constructor |
| */ |
| public BinaryShiftExpression(int op, long where, Expression left, Expression right) { |
| super(op, where, left.type, left, right); |
| } |
| |
| /** |
| * Evaluate the expression |
| */ |
| Expression eval() { |
| // The eval code in BinaryExpression.java only works correctly |
| // for arithmetic expressions. For shift expressions, we get cases |
| // where the left and right operand may legitimately be of mixed |
| // types (long and int). This is a fix for 4082814. |
| if (left.op == LONGVAL && right.op == INTVAL) { |
| return eval(((LongExpression)left).value, |
| ((IntExpression)right).value); |
| } |
| |
| // Delegate the rest of the cases to our parent, so as to minimize |
| // impact on existing behavior. |
| return super.eval(); |
| } |
| |
| /** |
| * Select the type |
| */ |
| void selectType(Environment env, Context ctx, int tm) { |
| if (left.type == Type.tLong) { |
| type = Type.tLong; |
| } else if (left.type.inMask(TM_INTEGER)) { |
| type = Type.tInt; |
| left = convert(env, ctx, type, left); |
| } else { |
| type = Type.tError; |
| } |
| if (right.type.inMask(TM_INTEGER)) { |
| right = new ConvertExpression(where, Type.tInt, right); |
| } else { |
| right = convert(env, ctx, Type.tInt, right); |
| } |
| } |
| } |