gcc/libjava/java/lang/VMClassLoader.java

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/*
* java.lang.ClassLoader: part of the Java Class Libraries project.
* Copyright (C) 1998, 2001, 2002 Free Software Foundation
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
package java.lang;
import java.util.*;
/**
* java.lang.VMClassLoader is a package-private helper for VMs to implement
* on behalf of java.lang.ClassLoader.
*
* @author John Keiser
* @version 1.1.0, Sep 22 1998
* @since CP1.1
*/
class VMClassLoader {
/**
* Helper to define a class using a string of bytes.
*
* @param name the name to give the class. null if unknown.
* @param data the data representing the classfile, in classfile format.
* @param offset the offset into the data where the classfile starts.
* @param len the length of the classfile data in the array.
* @return the class that was defined.
* @exception ClassFormatError if the byte array is not in proper classfile format.
*/
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final static native Class defineClass(ClassLoader cl, String name,
byte[] data, int offset, int len)
throws ClassFormatError;
/**
* Helper to resolve all references to other classes from this class.
* @param c the class to resolve.
*/
// Not yet needed for libgcj.
// final static native void resolveClass(Class c);
/**
* Helper for java.lang.Integer, Byte, etc. to get the TYPE class
* at initialization time.
*
* @param type code for the primitive type.
*/
static native Class getPrimitiveClass(char type);
/**
* The system default for assertion status. This is used for all system
* classes (those with a null ClassLoader), as well as the initial value for
* every ClassLoader's default assertion status.
*
* XXX - Not implemented yet; this requires native help.
*
* @return the system-wide default assertion status
*/
static final boolean defaultAssertionStatus()
{
return true;
}
/**
* The system default for package assertion status. This is used for all
* ClassLoader's packageAssertionStatus defaults. It must be a map of
* package names to Boolean.TRUE or Boolean.FALSE, with the unnamed package
* represented as a null key.
*
* XXX - Not implemented yet; this requires native help.
*
* @return a (read-only) map for the default packageAssertionStatus
*/
static final Map packageAssertionStatus()
{
return new HashMap();
}
/**
* The system default for class assertion status. This is used for all
* ClassLoader's classAssertionStatus defaults. It must be a map of
* class names to Boolean.TRUE or Boolean.FALSE
*
* XXX - Not implemented yet; this requires native help.
*
* @return a (read-only) map for the default classAssertionStatus
*/
static final Map classAssertionStatus()
{
return new HashMap();
}
}