Mercurial > hg > graal-compiler
view graal/com.oracle.graal.api.meta/src/com/oracle/graal/api/meta/Signature.java @ 8282:59744882ddeb
moved logic for reserving a special area/slot in a frame (e.g., for use during deoptimization) out of FrameMap and into platform specific backend class
author | Doug Simon <doug.simon@oracle.com> |
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date | Thu, 14 Mar 2013 14:35:53 +0100 |
parents | ca9061b6694c |
children | 3c3cd36a3836 |
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/* * Copyright (c) 2009, 2012, 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.meta; /** * Represents a method signature provided by the runtime. * * @see <a href="http://docs.oracle.com/javase/specs/jvms/se7/html/jvms-4.html#jvms-4.3.3">Method * Descriptors</a> */ public interface Signature { /** * Returns the number of parameters in this signature, adding 1 for a receiver if requested. * * @param receiver true if 1 is to be added to the result for a receiver * @return the number of parameters; + 1 iff {@code receiver == true} */ int getParameterCount(boolean receiver); /** * Gets the parameter type at the specified position. This method returns a * {@linkplain ResolvedJavaType resolved} type if possible but without triggering any class * loading or resolution. * * @param index the index into the parameters, with {@code 0} indicating the first parameter * @param accessingClass the context of the type lookup. If accessing class is provided, its * class loader is used to retrieve an existing resolved type. This value can be * {@code null} if the caller does not care for a resolved type. * @return the {@code index}'th parameter type */ JavaType getParameterType(int index, ResolvedJavaType accessingClass); /** * Gets the parameter kind at the specified position. This is the same as calling * {@link #getParameterType}. {@link JavaType#getKind getKind}. * * @param index the index into the parameters, with {@code 0} indicating the first parameter * @return the kind of the parameter at the specified position */ Kind getParameterKind(int index); /** * Gets the return type of this signature. This method will return a * {@linkplain ResolvedJavaType resolved} type if possible but without triggering any class * loading or resolution. * * @param accessingClass the context of the type lookup. If accessing class is provided, its * class loader is used to retrieve an existing resolved type. This value can be * {@code null} if the caller does not care for a resolved type. * @return the return type */ JavaType getReturnType(ResolvedJavaType accessingClass); /** * Gets the return kind of this signature. This is the same as calling {@link #getReturnType}. * {@link JavaType#getKind getKind}. */ Kind getReturnKind(); /** * Gets the size, in Java slots, of the parameters to this signature. * * @param withReceiver {@code true} if to add a slot for a receiver object; {@code false} not to * include the receiver * @return the size of the parameters in slots */ int getParameterSlots(boolean withReceiver); }