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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/java/lang/reflect/VMProxy.java
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+/* VMProxy.java -- VM interface for proxy class
+ Copyright (C) 2005 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+
+
+package java.lang.reflect;
+
+final class VMProxy
+{
+ /**
+ * Set to true if the VM provides a native method to implement
+ * Proxy.getProxyClass completely, including argument verification.
+ * If this is true, HAVE_NATIVE_GET_PROXY_DATA and
+ * HAVE_NATIVE_GENERATE_PROXY_CLASS should be false.
+ * @see java.lang.reflect.Proxy
+ */
+ static boolean HAVE_NATIVE_GET_PROXY_CLASS = false;
+
+ /**
+ * Set to true if the VM provides a native method to implement
+ * the first part of Proxy.getProxyClass: generation of the array
+ * of methods to convert, and verification of the arguments.
+ * If this is true, HAVE_NATIVE_GET_PROXY_CLASS should be false.
+ * @see java.lang.reflect.Proxy
+ */
+ static boolean HAVE_NATIVE_GET_PROXY_DATA = false;
+
+ /**
+ * Set to true if the VM provides a native method to implement
+ * the second part of Proxy.getProxyClass: conversion of an array of
+ * methods into an actual proxy class.
+ * If this is true, HAVE_NATIVE_GET_PROXY_CLASS should be false.
+ * @see java.lang.reflect.Proxy
+ */
+ static boolean HAVE_NATIVE_GENERATE_PROXY_CLASS = true;
+
+ /**
+ * Optional native method to replace (and speed up) the pure Java
+ * implementation of getProxyClass. Only needed if
+ * VMProxy.HAVE_NATIVE_GET_PROXY_CLASS is true, this does the
+ * work of both getProxyData and generateProxyClass with no
+ * intermediate form in Java. The native code may safely assume that
+ * this class must be created, and does not already exist.
+ *
+ * @param loader the class loader to define the proxy class in; null
+ * implies the bootstrap class loader
+ * @param interfaces the interfaces the class will extend
+ * @return the generated proxy class
+ * @throws IllegalArgumentException if the constraints for getProxyClass
+ * were violated, except for problems with null
+ * @throws NullPointerException if `interfaces' is null or contains
+ * a null entry, or if handler is null
+ * @see Configuration#HAVE_NATIVE_GET_PROXY_CLASS
+ * @see #getProxyClass(ClassLoader, Class[])
+ * @see #getProxyData(ClassLoader, Class[])
+ * @see #generateProxyClass(ProxyData)
+ */
+ static Class getProxyClass(ClassLoader loader, Class[] interfaces)
+ {
+ return null;
+ }
+
+ /**
+ * Optional native method to replace (and speed up) the pure Java
+ * implementation of getProxyData. Only needed if
+ * Configuration.HAVE_NATIVE_GET_PROXY_DATA is true. The native code
+ * may safely assume that a new ProxyData object must be created which
+ * does not duplicate any existing ones.
+ *
+ * @param loader the class loader to define the proxy class in; null
+ * implies the bootstrap class loader
+ * @param interfaces the interfaces the class will extend
+ * @return all data that is required to make this proxy class
+ * @throws IllegalArgumentException if the constraints for getProxyClass
+ * were violated, except for problems with null
+ * @throws NullPointerException if `interfaces' is null or contains
+ * a null entry, or if handler is null
+ * @see Configuration.HAVE_NATIVE_GET_PROXY_DATA
+ * @see #getProxyClass(ClassLoader, Class[])
+ * @see #getProxyClass(ClassLoader, Class[])
+ * @see ProxyType#getProxyData()
+ */
+ static Proxy.ProxyData getProxyData(ClassLoader loader, Class[] interfaces)
+ {
+ return null;
+ }
+
+ /**
+ * Optional native method to replace (and speed up) the pure Java
+ * implementation of generateProxyClass. Only needed if
+ * Configuration.HAVE_NATIVE_GENERATE_PROXY_CLASS is true. The native
+ * code may safely assume that a new Class must be created, and that
+ * the ProxyData object does not describe any existing class.
+ *
+ * @param loader the class loader to define the proxy class in; null
+ * implies the bootstrap class loader
+ * @param data the struct of information to convert to a Class. This
+ * has already been verified for all problems except exceeding
+ * VM limitations
+ * @return the newly generated class
+ * @throws IllegalArgumentException if VM limitations are exceeded
+ * @see #getProxyClass(ClassLoader, Class[])
+ * @see #getProxyClass(ClassLoader, Class[])
+ * @see ProxyData#generateProxyClass(ClassLoader)
+ */
+ static native Class generateProxyClass(ClassLoader loader, Proxy.ProxyData data);
+}