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61 lines
2.4 KiB
Java
61 lines
2.4 KiB
Java
/*
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* Copyright (c) 2001, 2025, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*
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*/
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package sun.jvm.hotspot.runtime;
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import java.util.*;
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import sun.jvm.hotspot.debugger.*;
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import sun.jvm.hotspot.types.*;
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public class StackValueCollection {
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private List<StackValue> list;
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public StackValueCollection() { list = new ArrayList<>(); }
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public StackValueCollection(int length) { list = new ArrayList<>(length); }
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public void add(StackValue val) { list.add(val); }
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public int size() { return list.size(); }
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public boolean isEmpty() { return (size() == 0); }
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public StackValue get(int i) { return list.get(i); }
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// Get typed locals/expressions
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// FIXME: must figure out whether word swapping is necessary on amd64
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public boolean booleanAt(int slot) { return (int)get(slot).getInteger() != 0; }
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public byte byteAt(int slot) { return (byte) get(slot).getInteger(); }
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public char charAt(int slot) { return (char) get(slot).getInteger(); }
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public short shortAt(int slot) { return (short) get(slot).getInteger(); }
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public int intAt(int slot) { return (int) get(slot).getInteger(); }
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public OopHandle oopHandleAt(int slot) {
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StackValue sv = get(slot);
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if (sv.getType() == BasicType.getTConflict()) {
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throw new WrongTypeException("Conflict type");
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}
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return sv.getObject();
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}
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public float floatAt(int slot) { return Float.intBitsToFloat(intAt(slot)); }
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}
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