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Diffstat (limited to 'src/java/org/apache/bcel/generic/ArrayInstruction.java')
-rw-r--r-- | src/java/org/apache/bcel/generic/ArrayInstruction.java | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/src/java/org/apache/bcel/generic/ArrayInstruction.java b/src/java/org/apache/bcel/generic/ArrayInstruction.java new file mode 100644 index 00000000..b8586bd4 --- /dev/null +++ b/src/java/org/apache/bcel/generic/ArrayInstruction.java @@ -0,0 +1,106 @@ +package org.apache.bcel.generic; + +/* ==================================================================== + * 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/>. + */ + +/** + * Super class for instructions dealing with array access such as IALOAD. + * + * @version $Id$ + * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> + */ +public abstract class ArrayInstruction extends Instruction + implements ExceptionThrower, TypedInstruction { + /** + * Empty constructor needed for the Class.newInstance() statement in + * Instruction.readInstruction(). Not to be used otherwise. + */ + ArrayInstruction() {} + + /** + * @param opcode of instruction + */ + protected ArrayInstruction(short opcode) { + super(opcode, (short)1); + } + + public Class[] getExceptions() { + return org.apache.bcel.ExceptionConstants.EXCS_ARRAY_EXCEPTION; + } + + /** @return type associated with the instruction + */ + public Type getType(ConstantPoolGen cp) { + switch(opcode) { + case org.apache.bcel.Constants.IALOAD: case org.apache.bcel.Constants.IASTORE: + return Type.INT; + case org.apache.bcel.Constants.CALOAD: case org.apache.bcel.Constants.CASTORE: + return Type.CHAR; + case org.apache.bcel.Constants.BALOAD: case org.apache.bcel.Constants.BASTORE: + return Type.BYTE; + case org.apache.bcel.Constants.SALOAD: case org.apache.bcel.Constants.SASTORE: + return Type.SHORT; + case org.apache.bcel.Constants.LALOAD: case org.apache.bcel.Constants.LASTORE: + return Type.LONG; + case org.apache.bcel.Constants.DALOAD: case org.apache.bcel.Constants.DASTORE: + return Type.DOUBLE; + case org.apache.bcel.Constants.FALOAD: case org.apache.bcel.Constants.FASTORE: + return Type.FLOAT; + case org.apache.bcel.Constants.AALOAD: case org.apache.bcel.Constants.AASTORE: + return Type.OBJECT; + + default: throw new ClassGenException("Oops: unknown case in switch" + opcode); + } + } +} |