Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.api.object/src/com/oracle/truffle/api/object/Location.java @ 21793:44bad469bec2
Create DEST_SUBDIR when doing install_jvm (JBS:GRAAL-52)
author | Stefan Anzinger <stefan.anzinger@oracle.com> |
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date | Mon, 08 Jun 2015 18:07:25 +0200 |
parents | f439fdb137a3 |
children |
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/* * Copyright (c) 2013, 2014, 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. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * 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 * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.api.object; import com.oracle.truffle.api.*; /** * Property location. * * @see Shape * @see Property * @see DynamicObject */ public abstract class Location implements BaseLocation { protected static IncompatibleLocationException incompatibleLocation() throws IncompatibleLocationException { CompilerDirectives.transferToInterpreterAndInvalidate(); throw new IncompatibleLocationException(); } protected static FinalLocationException finalLocation() throws FinalLocationException { CompilerDirectives.transferToInterpreterAndInvalidate(); throw new FinalLocationException(); } public final Object get(DynamicObject store, Shape shape) { return get(store, checkShape(store, shape)); } public Object get(DynamicObject store, boolean condition) { return getInternal(store); } public void set(DynamicObject store, Object value, Shape shape) throws IncompatibleLocationException, FinalLocationException { setInternal(store, value); } public final void set(DynamicObject store, Object value, Shape oldShape, Shape newShape) throws IncompatibleLocationException { if (canStore(value)) { store.setShapeAndGrow(oldShape, newShape); try { setInternal(store, value); } catch (IncompatibleLocationException ex) { throw new IllegalStateException(); } } else { throw incompatibleLocation(); } } public final void set(DynamicObject store, Object value) throws IncompatibleLocationException, FinalLocationException { set(store, value, null); } protected abstract Object getInternal(DynamicObject store); /** * Like {@link #set(DynamicObject, Object, Shape)}, but does not invalidate final locations. For * internal use only and subject to change, use {@link DynamicObjectFactory} to create objects * with predefined properties. * * @throws IncompatibleLocationException if value is of non-assignable type */ protected abstract void setInternal(DynamicObject store, Object value) throws IncompatibleLocationException; /** * Returns {@code true} if the location can be set to the value. * * @param store the receiver object * @param value the value in question */ public boolean canSet(DynamicObject store, Object value) { return canStore(value); } /** * Returns {@code true} if the location is compatible with the value. * * The value may still be rejected if {@link #canSet(DynamicObject, Object)} returns false. * * @param value the value in question */ public boolean canStore(Object value) { return true; } /** * Returns {@code true} if this is a final location, i.e. readonly once set. */ public boolean isFinal() { return false; } /** * Returns {@code true} if this is an immutable constant location. */ public boolean isConstant() { return false; } /* * Abstract to force overriding. */ @Override public abstract int hashCode(); /* * Abstract to force overriding. */ @Override public abstract boolean equals(Object obj); protected static boolean checkShape(DynamicObject store, Shape shape) { return store.getShape() == shape; } }