Mercurial > hg > truffle
view c1x4hotspotsrc/HotSpotVM/src/com/sun/hotspot/c1x/HotSpotField.java @ 2057:89bf01e6b049
Treat C1XOptions fields as final.
author | Thomas Wuerthinger <wuerthinger@ssw.jku.at> |
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date | Fri, 14 Jan 2011 16:29:42 +0100 |
parents | 99ad52189524 |
children | f21664b3dd1c 569d3fe7d65c |
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/* * Copyright (c) 2010 Sun Microsystems, Inc. All rights reserved. * * Sun Microsystems, Inc. has intellectual property rights relating to technology embodied in the product * that is described in this document. In particular, and without limitation, these intellectual property * rights may include one or more of the U.S. patents listed at http://www.sun.com/patents and one or * more additional patents or pending patent applications in the U.S. and in other countries. * * U.S. Government Rights - Commercial software. Government users are subject to the Sun * Microsystems, Inc. standard license agreement and applicable provisions of the FAR and its * supplements. * * Use is subject to license terms. Sun, Sun Microsystems, the Sun logo, Java and Solaris are trademarks or * registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks * are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the * U.S. and other countries. * * UNIX is a registered trademark in the U.S. and other countries, exclusively licensed through X/Open * Company, Ltd. */ package com.sun.hotspot.c1x; import java.lang.reflect.*; import com.sun.c1x.*; import com.sun.cri.ci.CiConstant; import com.sun.cri.ci.CiKind; import com.sun.cri.ri.RiField; import com.sun.cri.ri.RiType; /** * Represents a field in a HotSpot type. * * @author Thomas Wuerthinger, Lukas Stadler */ public class HotSpotField extends CompilerObject implements RiField { private final RiType holder; private final String name; private final RiType type; private final int offset; private CiConstant constant; public HotSpotField(RiType holder, String name, RiType type, int offset) { this.holder = holder; this.name = name; this.type = type; this.offset = offset; } @Override public int accessFlags() { // TODO Auto-generated method stub return 0; } @Override public CiConstant constantValue(Object object) { if (object == null) { if (constant == null && holder.isResolved() && holder.javaClass() == C1XOptions.class) { Field f; try { f = C1XOptions.class.getField(name); } catch (SecurityException e1) { return null; } catch (NoSuchFieldException e1) { return null; } f.setAccessible(true); if (Modifier.isStatic(f.getModifiers())) { CiKind kind = CiKind.fromJavaClass(f.getType()); Object value; try { value = f.get(null); } catch (IllegalArgumentException e) { return null; } catch (IllegalAccessException e) { return null; } constant = CiConstant.forBoxed(kind, value); } } // Constant part only valid for static fields. return constant; } return null; } @Override public RiType holder() { return holder; } @Override public boolean equals(Object obj) { if (obj instanceof HotSpotField) { HotSpotField other = (HotSpotField) obj; return other.offset == offset && other.holder.equals(holder()); } return false; } @Override public boolean isResolved() { return offset != -1; } @Override public CiKind kind() { return type().kind(); } @Override public String name() { return name; } @Override public RiType type() { return type; } public int offset() { return offset; } @Override public String toString() { return "HotSpotField<" + holder.name() + "." + name + ">"; } }