Mercurial > hg > graal-compiler
view graal/com.oracle.graal.api.replacements/src/com/oracle/graal/api/replacements/SnippetReflectionProvider.java @ 15018:db4254246f9a
Remove Constant.forObject and Constant.asObject to improve compiler/VM separation
author | Christian Wimmer <christian.wimmer@oracle.com> |
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date | Mon, 07 Apr 2014 16:09:17 -0700 |
parents | |
children | 9619ba4daf4c |
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/* * Copyright (c) 2014, 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. * * 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.graal.api.replacements; import com.oracle.graal.api.meta.*; /** * Reflection operations on values represented as {@linkplain Constant constants} for the processing * of snippets. Snippets need a direct access to the value of object constants, which is not allowed * in other parts of Graal to enforce compiler-VM separation. * <p> * This interface must not be used in Graal code that is not related to snippet processing. */ public interface SnippetReflectionProvider { /** * Creates a boxed {@link Kind#Object object} constant. * * @param object the object value to box * @return a constant containing {@code object} */ Constant forObject(Object object); /** * Returns the object reference the given constant represents. The constant must have kind * {@link Kind#Object}. * * @param constant the to access * @return the object value of the constant */ Object asObject(Constant constant); /** * Creates a boxed constant for the given kind from an Object. The object needs to be of the * Java boxed type corresponding to the kind. * * @param kind the kind of the constant to create * @param value the Java boxed value: a {@link Byte} instance for {@link Kind#Byte}, etc. * @return the boxed copy of {@code value} */ Constant forBoxed(Kind kind, Object value); /** * Returns the value of this constant as a boxed Java value. * * @param constant the constant to box * @return the value of the constant */ Object asBoxedValue(Constant constant); }