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package org.aspectj.apache.bcel.verifier.structurals;
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" and
* "Apache BCEL" must not be used to endorse or promote products
* derived from this software without prior written permission. For
* written permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* "Apache BCEL", nor may "Apache" appear in their name, without
* prior written permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
import org.aspectj.apache.bcel.generic.*;
/**
* This interface defines properties of JVM bytecode subroutines.
* Note that it is 'abused' to maintain the top-level code in a
* consistent fashion, too.
*
* @version $Id: Subroutine.java,v 1.1 2004/11/18 14:48:12 aclement Exp $
* @author <A HREF="http://www.inf.fu-berlin.de/~ehaase"/>Enver Haase</A>
*/
public interface Subroutine{
/**
* Returns all the JsrInstructions that have the
* first instruction of this subroutine as their target.
* <B>Must not be invoked on the 'top-level subroutine'.</B>
*/
public InstructionHandle[] getEnteringJsrInstructions();
/**
* Returns the one and only RET that leaves the subroutine.
* Note that JustIce has a pretty rigid notion of a subroutine.
* <B>Must not be invoked on the 'top-level subroutine'.</B>
*
* @see org.aspectj.apache.bcel.verifier.structurals.Subroutines
*/
public InstructionHandle getLeavingRET();
/**
* Returns all instructions that together form this subroutine.
* Note that an instruction is part of exactly one subroutine
* (the top-level code is considered to be a special subroutine) -
* else it is not reachable at all (dead code).
*/
public InstructionHandle[] getInstructions();
/**
* Returns if the given InstructionHandle refers to an instruction
* that is part of this subroutine. This is a convenience method
* that saves iteration over the InstructionHandle objects returned
* by getInstructions().
*
* @see #getInstructions()
*/
public boolean contains(InstructionHandle inst);
/**
* Returns an int[] containing the indices of the local variable slots
* accessed by this Subroutine (read-accessed, write-accessed or both);
* local variables referenced by subroutines of this subroutine are
* not included.
*
* @see #getRecursivelyAccessedLocalsIndices()
*/
public int[] getAccessedLocalsIndices();
/**
* Returns an int[] containing the indices of the local variable slots
* accessed by this Subroutine (read-accessed, write-accessed or both);
* local variables referenced by subroutines of this subroutine are
* included.
*
* @see #getAccessedLocalsIndices()
*/
public int[] getRecursivelyAccessedLocalsIndices();
/**
* Returns the subroutines that are directly called from this subroutine.
*/
public Subroutine[] subSubs();
}
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