Ant example source code file (InterfaceMethodRefCPInfo.java)

This example Ant source code file (InterfaceMethodRefCPInfo.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Ant tags/keywords

class, classcpinfo, classcpinfo, constantpoolentry, interfacemethod, interfacemethod, interfacemethodrefcpinfo, io, ioexception, nameandtypecpinfo, nameandtypecpinfo, string, string

The InterfaceMethodRefCPInfo.java source code

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */
package org.apache.tools.ant.taskdefs.optional.depend.constantpool;

import java.io.DataInputStream;
import java.io.IOException;

/**
 * A InterfaceMethodRef CP Info
 *
 */
public class InterfaceMethodRefCPInfo extends ConstantPoolEntry {
    /** the class name of the class defining the interface method */
    private String interfaceMethodClassName;
    /** the name of the interface nmethod */
    private String interfaceMethodName;
    /** the method signature of the interface method */
    private String interfaceMethodType;
    /**
     * the index into the constant pool of the class entry for the interface
     * class
     */
    private int classIndex;
    /**
     * the index into the constant pool of the name and type entry
     * describing the method
     */
    private int nameAndTypeIndex;

    /** Constructor. */
    public InterfaceMethodRefCPInfo() {
        super(CONSTANT_INTERFACEMETHODREF, 1);
    }

    /**
     * read a constant pool entry from a class stream.
     *
     * @param cpStream the DataInputStream which contains the constant pool
     *      entry to be read.
     * @exception IOException if there is a problem reading the entry from
     *      the stream.
     */
    public void read(DataInputStream cpStream) throws IOException {
        classIndex = cpStream.readUnsignedShort();
        nameAndTypeIndex = cpStream.readUnsignedShort();
    }

    /**
     * Resolve this constant pool entry with respect to its dependents in
     * the constant pool.
     *
     * @param constantPool the constant pool of which this entry is a member
     *      and against which this entry is to be resolved.
     */
    public void resolve(ConstantPool constantPool) {
        ClassCPInfo interfaceMethodClass
             = (ClassCPInfo) constantPool.getEntry(classIndex);

        interfaceMethodClass.resolve(constantPool);

        interfaceMethodClassName = interfaceMethodClass.getClassName();

        NameAndTypeCPInfo nt
             = (NameAndTypeCPInfo) constantPool.getEntry(nameAndTypeIndex);

        nt.resolve(constantPool);

        interfaceMethodName = nt.getName();
        interfaceMethodType = nt.getType();

        super.resolve(constantPool);
    }

    /**
     * Print a readable version of the constant pool entry.
     *
     * @return the string representation of this constant pool entry.
     */
    public String toString() {
        String value;

        if (isResolved()) {
            value = "InterfaceMethod : Class = " + interfaceMethodClassName
                 + ", name = " + interfaceMethodName + ", type = "
                 + interfaceMethodType;
        } else {
            value = "InterfaceMethod : Class index = " + classIndex
                 + ", name and type index = " + nameAndTypeIndex;
        }

        return value;
    }

    /**
     * Gets the name of the class defining the interface method
     *
     * @return the name of the class defining the interface method
     */
    public String getInterfaceMethodClassName() {
        return interfaceMethodClassName;
    }

    /**
     * Get the name of the interface method
     *
     * @return the name of the interface method
     */
    public String getInterfaceMethodName() {
        return interfaceMethodName;
    }

    /**
     * Gets the type of the interface method
     *
     * @return the interface method's type signature
     */
    public String getInterfaceMethodType() {
        return interfaceMethodType;
    }

}