/*
* Copyright (c) 2009, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* questions.
*/
package com.sun.c1x.ir;
import com.sun.c1x.value.*;
import com.sun.cri.ci.*;
/**
* This the base class of all array operations.
*/
public abstract class AccessArray extends StateSplit {
protected Value array;
/**
* Creates a new AccessArray instruction.
* @param kind the type of the result of this instruction
* @param array the instruction that produces the array object value
* @param stateBefore the frame state before the instruction
*/
public AccessArray(CiKind kind, Value array, FrameState stateBefore) {
super(kind, stateBefore);
this.array = array;
if (array.isNonNull()) {
eliminateNullCheck();
}
}
/**
* Gets the instruction that produces the array object.
* @return the instruction that produces the array object
*/
public Value array() {
return array;
}
/**
* Clears the state if this instruction can (no longer) trap.
*/
@Override
public void runtimeCheckCleared() {
if (!canTrap()) {
clearState();
}
}
@Override
public void inputValuesDo(ValueClosure closure) {
array = closure.apply(array);
}
}