// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
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// modification, are permitted provided that the following conditions
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//    notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
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//    this software without specific prior written permission.
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package net.hasor.utils.asm;
/**
 * Information about the input stack map frame at the "current" instruction of a method. This is
 * implemented as a Frame subclass for a "basic block" containing only one instruction.
 *
 * @author Eric Bruneton
 */
final class CurrentFrame extends Frame {
    CurrentFrame(final Label owner) {
        super(owner);
    }

    /**
     * Sets this CurrentFrame to the input stack map frame of the next "current" instruction, i.e. the
     * instruction just after the given one. It is assumed that the value of this object when this
     * method is called is the stack map frame status just before the given instruction is executed.
     */
    @Override
    void execute(final int opcode, final int arg, final Symbol symbolArg, final SymbolTable symbolTable) {
        super.execute(opcode, arg, symbolArg, symbolTable);
        Frame successor = new Frame(null);
        merge(symbolTable, successor, 0);
        copyFrom(successor);
    }
}
