JDK14/Java14源码在线阅读

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 * Licensed to the Apache Software Foundation (ASF) under one or more
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 * (the "License"); you may not use this file except in compliance with
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 *      http://www.apache.org/licenses/LICENSE-2.0
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package com.sun.org.apache.xalan.internal.xsltc.compiler.util;
import com.sun.org.apache.bcel.internal.generic.Instruction;

/**
 * <p>This pseudo-instruction marks the beginning of a region of byte code that
 * can be copied into a new method, termed an "outlineable" chunk.  The size of
 * the Java stack must be the same at the start of the region as it is at the
 * end of the region, any value on the stack at the start of the region must not
 * be consumed by an instruction in the region of code, the region must not
 * contain a return instruction, no branch instruction in the region is
 * permitted to have a target that is outside the region, and no branch
 * instruction outside the region is permitted to have a target that is inside
 * the region.</p>
 * <p>The end of the region is marked by an {@link OutlineableChunkEnd}
 * pseudo-instruction.</p>
 * <p>Such a region of code may contain other outlineable regions.</p>
 */
class OutlineableChunkStart extends MarkerInstruction {
    /**
     * A constant instance of {@link OutlineableChunkStart}.  As it has no fields,
     * there should be no need to create an instance of this class.
     */
    public static final Instruction OUTLINEABLECHUNKSTART =
                                                new OutlineableChunkStart();

    /**
     * Private default constructor.  As it has no fields,
     * there should be no need to create an instance of this class.  See
     * {@link OutlineableChunkStart#OUTLINEABLECHUNKSTART}.
     */
    private OutlineableChunkStart() {
    }

    /**
     * Get the name of this instruction.  Used for debugging.
     * @return the instruction name
     */
    public String getName() {
        return OutlineableChunkStart.class.getName();
    }

    /**
     * Get the name of this instruction.  Used for debugging.

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