jaxp/src/java.xml/share/classes/com/sun/org/apache/bcel/internal/generic/ConversionInstruction.java
author joehw
Sun, 13 Aug 2017 21:10:40 -0700
changeset 46174 5611d2529b49
parent 44797 8b3b3b911b8a
permissions -rw-r--r--
8163121: BCEL: update to the latest 6.0 release Reviewed-by: dfuchs, lancea
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/*
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 * reserved comment block
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 * DO NOT REMOVE OR ALTER!
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 */
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/*
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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * contributor license agreements.  See the NOTICE file distributed with
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 * this work for additional information regarding copyright ownership.
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 * The ASF licenses this file to You under the Apache License, Version 2.0
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 * (the "License"); you may not use this file except in compliance with
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 * the License.  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 com.sun.org.apache.bcel.internal.generic;
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import com.sun.org.apache.bcel.internal.Const;
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/**
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 * Super class for the x2y family of instructions.
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 *
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 * @version $Id: ConversionInstruction.java 1747278 2016-06-07 17:28:43Z britter $
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 */
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public abstract class ConversionInstruction extends Instruction implements TypedInstruction,
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        StackProducer, StackConsumer {
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    /**
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     * Empty constructor needed for the Class.newInstance() statement in
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     * Instruction.readInstruction(). Not to be used otherwise.
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     */
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    ConversionInstruction() {
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    }
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    /**
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     * @param opcode opcode of instruction
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     */
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    protected ConversionInstruction(final short opcode) {
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        super(opcode, (short) 1);
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    }
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    /** @return type associated with the instruction
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     */
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    @Override
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    public Type getType( final ConstantPoolGen cp ) {
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        final short _opcode = super.getOpcode();
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        switch (_opcode) {
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            case Const.D2I:
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            case Const.F2I:
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            case Const.L2I:
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                return Type.INT;
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            case Const.D2F:
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            case Const.I2F:
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            case Const.L2F:
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                return Type.FLOAT;
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            case Const.D2L:
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            case Const.F2L:
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            case Const.I2L:
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                return Type.LONG;
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            case Const.F2D:
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            case Const.I2D:
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            case Const.L2D:
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                return Type.DOUBLE;
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            case Const.I2B:
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                return Type.BYTE;
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            case Const.I2C:
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                return Type.CHAR;
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            case Const.I2S:
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                return Type.SHORT;
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            default: // Never reached
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                throw new ClassGenException("Unknown type " + _opcode);
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        }
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    }
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}