Showing the changes to java/pkg/sun/tools/tree/BinaryShiftExpression.java (1 of 18352 files). Show all
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| 1 | /* | ||
| 2 | * Copyright (c) 1994, 2003, Oracle and/or its affiliates. All rights reserved. | ||
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | ||
| 4 | * | ||
| 5 | * This code is free software; you can redistribute it and/or modify it | ||
| 6 | * under the terms of the GNU General Public License version 2 only, as | ||
| 7 | * published by the Free Software Foundation. Oracle designates this | ||
| 8 | * particular file as subject to the "Classpath" exception as provided | ||
| 9 | * by Oracle in the LICENSE file that accompanied this code. | ||
| 10 | * | ||
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT | ||
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | ||
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | ||
| 14 | * version 2 for more details (a copy is included in the LICENSE file that | ||
| 15 | * accompanied this code). | ||
| 16 | * | ||
| 17 | * You should have received a copy of the GNU General Public License version | ||
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, | ||
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | ||
| 20 | * | ||
| 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | ||
| 22 | * or visit www.oracle.com if you need additional information or have any | ||
| 23 | * questions. | ||
| 24 | */ | ||
| 25 | |||
| 26 | package sun.tools.tree; | ||
| 27 | |||
| 28 | import sun.tools.java.*; | ||
| 29 | |||
| 30 | /** | ||
| 31 | * WARNING: The contents of this source file are not part of any | ||
| 32 | * supported API. Code that depends on them does so at its own risk: | ||
| 33 | * they are subject to change or removal without notice. | ||
| 34 | */ | ||
| 35 | public | ||
| 36 | class BinaryShiftExpression extends BinaryExpression { | ||
| 37 | /** | ||
| 38 | * constructor | ||
| 39 | */ | ||
| 40 | public BinaryShiftExpression(int op, long where, Expression left, Expression right) { | ||
| 41 | super(op, where, left.type, left, right); | ||
| 42 | } | ||
| 43 | |||
| 44 | /** | ||
| 45 | * Evaluate the expression | ||
| 46 | */ | ||
| 47 | Expression eval() { | ||
| 48 | // The eval code in BinaryExpression.java only works correctly | ||
| 49 | // for arithmetic expressions. For shift expressions, we get cases | ||
| 50 | // where the left and right operand may legitimately be of mixed | ||
| 51 | // types (long and int). This is a fix for 4082814. | ||
| 52 | if (left.op == LONGVAL && right.op == INTVAL) { | ||
| 53 | return eval(((LongExpression)left).value, | ||
| 54 | ((IntExpression)right).value); | ||
| 55 | } | ||
| 56 | |||
| 57 | // Delegate the rest of the cases to our parent, so as to minimize | ||
| 58 | // impact on existing behavior. | ||
| 59 | return super.eval(); | ||
| 60 | } | ||
| 61 | |||
| 62 | /** | ||
| 63 | * Select the type | ||
| 64 | */ | ||
| 65 | void selectType(Environment env, Context ctx, int tm) { | ||
| 66 | if (left.type == Type.tLong) { | ||
| 67 | type = Type.tLong; | ||
| 68 | } else if (left.type.inMask(TM_INTEGER)) { | ||
| 69 | type = Type.tInt; | ||
| 70 | left = convert(env, ctx, type, left); | ||
| 71 | } else { | ||
| 72 | type = Type.tError; | ||
| 73 | } | ||
| 74 | if (right.type.inMask(TM_INTEGER)) { | ||
| 75 | right = new ConvertExpression(where, Type.tInt, right); | ||
| 76 | } else { | ||
| 77 | right = convert(env, ctx, Type.tInt, right); | ||
| 78 | } | ||
| 79 | } | ||
| 80 | } | ||