105 lines
2.6 KiB
Java
105 lines
2.6 KiB
Java
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/*
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*
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* @(#) MethodDesc.java 1.2@(#)
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*
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* Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
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*
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* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE
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* SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
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* PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR ANY DAMAGES
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* SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING
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* THIS SOFTWARE OR ITS DERIVATIVES.
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*
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*/
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/**
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* <p>
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* FESI.ClassFile.MethodDesc
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* </p>
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*
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* @version 1.0
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* @author Laurence P. G. Cable
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*/
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package FESI.ClassFile;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import FESI.ClassFile.ClassFile;
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import FESI.ClassFile.UTF8Constant;
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import FESI.ClassFile.Attribute;
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/**
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* <p> this class provides minimal support for method_info structures </p>
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*/
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final class MethodDesc {
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final static short ACC_PUBLIC = 0x0001;
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final static short ACC_PRIVATE = 0x0002;
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final static short ACC_PROTECTED = 0x0004;
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final static short ACC_STATIC = 0x0008;
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final static short ACC_FINAL = 0x0010;
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final static short ACC_SYNCHRONIZED = 0x0020;
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final static short ACC_NATIVE = 0x0100;
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final static short ACC_ABSTRACT = 0x0400;
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private UTF8Constant name;
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private UTF8Constant descriptor;
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private short accessFlags;
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private ClassFile classFile;
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private Attribute[] attributes;
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/**
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* <p> construct a descriptor for a method </p>
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*
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* @param method the name of the method
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* @param desc a type descriptor for its signature
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* @param flags access flags
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* @param cf the class file
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* @param attrs arbitrary attributes
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*
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*/
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MethodDesc(String method, String desc, short flags, ClassFile cf, Attribute[] attrs) {
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super();
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// we would validate here ...
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name = new UTF8Constant(method, cf);
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descriptor = new UTF8Constant(desc, cf);
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accessFlags = flags;
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classFile = cf;
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attributes = attrs;
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}
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/**
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* <p> write the method to the stream </p>
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*
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* @param dos the output stream
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*
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* @throws IOException
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*/
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void write(DataOutputStream dos) throws IOException {
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dos.writeShort(accessFlags);
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dos.writeShort(name.getConstantPoolIndex());
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dos.writeShort(descriptor.getConstantPoolIndex());
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if (attributes != null && attributes.length > 0) {
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dos.writeShort(attributes.length);
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for (int i = 0; i < attributes.length; i++) {
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attributes[i].write(dos);
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}
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} else dos.writeShort(0);
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}
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}
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