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Diffstat (limited to 'src/java/org/apache/bcel/generic/FieldInstruction.java')
-rw-r--r-- | src/java/org/apache/bcel/generic/FieldInstruction.java | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/src/java/org/apache/bcel/generic/FieldInstruction.java b/src/java/org/apache/bcel/generic/FieldInstruction.java new file mode 100644 index 00000000..028ed5cf --- /dev/null +++ b/src/java/org/apache/bcel/generic/FieldInstruction.java @@ -0,0 +1,116 @@ +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/>. + */ + +import org.apache.bcel.classfile.ConstantPool; +import org.apache.bcel.classfile.ConstantUtf8; +import org.apache.bcel.classfile.ConstantNameAndType; +import org.apache.bcel.classfile.ConstantCP; +import org.apache.bcel.classfile.*; + +/** + * Super class for the GET/PUTxxx family of instructions. + * + * @version $Id$ + * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A> + */ +public abstract class FieldInstruction extends FieldOrMethod + implements TypedInstruction { + /** + * Empty constructor needed for the Class.newInstance() statement in + * Instruction.readInstruction(). Not to be used otherwise. + */ + FieldInstruction() {} + + /** + * @param index to constant pool + */ + protected FieldInstruction(short opcode, int index) { + super(opcode, index); + } + + /** + * @return mnemonic for instruction with symbolic references resolved + */ + public String toString(ConstantPool cp) { + return org.apache.bcel.Constants.OPCODE_NAMES[opcode] + " " + + cp.constantToString(index, org.apache.bcel.Constants.CONSTANT_Fieldref); + } + + /** @return size of field (1 or 2) + */ + protected int getFieldSize(ConstantPoolGen cpg) { + return getType(cpg).getSize(); + } + + /** @return return type of referenced field + */ + public Type getType(ConstantPoolGen cpg) { + return getFieldType(cpg); + } + + /** @return type of field + */ + public Type getFieldType(ConstantPoolGen cpg) { + return Type.getType(getSignature(cpg)); + } + + /** @return name of referenced field. + */ + public String getFieldName(ConstantPoolGen cpg) { + return getName(cpg); + } +} + |