130 lines
3.1 KiB
Java
130 lines
3.1 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package external.com.android.dx;
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import external.com.android.dx.rop.code.Rop;
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import external.com.android.dx.rop.code.Rops;
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import external.com.android.dx.rop.type.TypeList;
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/**
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* An operation on two values of the same type.
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*
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* <p>Math operations ({@link #ADD}, {@link #SUBTRACT}, {@link #MULTIPLY},
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* {@link #DIVIDE}, and {@link #REMAINDER}) support ints, longs, floats and
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* doubles.
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*
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* <p>Bit operations ({@link #AND}, {@link #OR}, {@link #XOR}, {@link
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* #SHIFT_LEFT}, {@link #SHIFT_RIGHT}, {@link #UNSIGNED_SHIFT_RIGHT}) support
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* ints and longs.
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*
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* <p>Division by zero behaves differently depending on the operand type.
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* For int and long operands, {@link #DIVIDE} and {@link #REMAINDER} throw
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* {@link ArithmeticException} if {@code b == 0}. For float and double operands,
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* the operations return {@code NaN}.
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*/
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public enum BinaryOp {
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/** {@code a + b} */
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ADD() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opAdd(types);
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}
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},
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/** {@code a - b} */
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SUBTRACT() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opSub(types);
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}
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},
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/** {@code a * b} */
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MULTIPLY() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opMul(types);
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}
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},
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/** {@code a / b} */
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DIVIDE() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opDiv(types);
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}
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},
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/** {@code a % b} */
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REMAINDER() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opRem(types);
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}
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},
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/** {@code a & b} */
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AND() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opAnd(types);
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}
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},
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/** {@code a | b} */
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OR() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opOr(types);
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}
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},
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/** {@code a ^ b} */
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XOR() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opXor(types);
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}
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},
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/** {@code a << b} */
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SHIFT_LEFT() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opShl(types);
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}
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},
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/** {@code a >> b} */
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SHIFT_RIGHT() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opShr(types);
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}
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},
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/** {@code a >>> b} */
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UNSIGNED_SHIFT_RIGHT() {
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@Override
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Rop rop(TypeList types) {
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return Rops.opUshr(types);
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}
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};
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abstract Rop rop(external.com.android.dx.rop.type.TypeList types);
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}
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