Type.java Source File

00001 package edu.ksu.cis.bandera.jjjc.symboltable;
00002 
00003 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
00004  * Bandera, a Java(TM) analysis and transformation toolkit           *
00005  * Copyright (C) 1999, 2000   Robby (robby@cis.ksu.edu)              *
00006  * All rights reserved.                                              *
00007  *                                                                   *
00008  * This work was done as a project in the SAnToS Laboratory,         *
00009  * Department of Computing and Information Sciences, Kansas State    *
00010  * University, USA (http://www.cis.ksu.edu/santos).                  *
00011  * It is understood that any modification not identified as such is  *
00012  * not covered by the preceding statement.                           *
00013  *                                                                   *
00014  * This work is free software; you can redistribute it and/or        *
00015  * modify it under the terms of the GNU Library General Public       *
00016  * License as published by the Free Software Foundation; either      *
00017  * version 2 of the License, or (at your option) any later version.  *
00018  *                                                                   *
00019  * This work is distributed in the hope that it will be useful,      *
00020  * but WITHOUT ANY WARRANTY; without even the implied warranty of    *
00021  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU *
00022  * Library General Public License for more details.                  *
00023  *                                                                   *
00024  * You should have received a copy of the GNU Library General Public *
00025  * License along with this toolkit; if not, write to the             *
00026  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,      *
00027  * Boston, MA  02111-1307, USA.                                      *
00028  *                                                                   *
00029  * Java is a trademark of Sun Microsystems, Inc.                     *
00030  *                                                                   *
00031  * To submit a bug report, send a comment, or get the latest news on *
00032  * this project and other SAnToS projects, please visit the web-site *
00033  *                http://www.cis.ksu.edu/santos                      *
00034  * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
00035 import edu.ksu.cis.bandera.jjjc.exception.*;
00036 
00037 public abstract class Type implements Named, Typed {
00038     protected Name name;
00039 /**
00040  * 
00041  * @return boolean
00042  * @param otherType java.lang.Object
00043  */
00044 public boolean equals(Object otherType) {
00045     if (otherType instanceof Type)
00046         return isValidIdentityConversion((Type) otherType);
00047     else
00048         return false;
00049 }
00050 /**
00051  * 
00052  * @return java.lang.String
00053  */
00054 public abstract String getFullyQualifiedName();
00055 /**
00056  * 
00057  * @return edu.ksu.cis.bandera.jjjc.symboltable.Type
00058  */
00059 public Type getType() {
00060     return this;
00061 }
00062 /**
00063  * 
00064  * @return boolean
00065  * @param otherType edu.ksu.cis.bandera.jjjc.symboltable.Type
00066  */
00067 public boolean isValidCastingConversion(Type otherType) {
00068     return isValidIdentityConversion(otherType) ||  isValidWideningConversion(otherType)
00069             || isValidNarrowingConversion(otherType);
00070 }
00071 /**
00072  * 
00073  * @return boolean
00074  * @param otherType edu.ksu.cis.bandera.jjjc.symboltable.Type
00075  */
00076 public boolean isValidIdentityConversion(Type otherType) {
00077     return this.getFullyQualifiedName().trim().equals(otherType.getFullyQualifiedName().trim());
00078 }
00079 /**
00080  * 
00081  * @return boolean
00082  * @param otherType edu.ksu.cis.bandera.jjjc.symboltable.Type
00083  */
00084 public boolean isValidMethodInvocationConversion(Type otherType) {
00085     return isValidIdentityConversion(otherType) || isValidWideningConversion(otherType);
00086 }
00087 /**
00088  * 
00089  * @return boolean
00090  * @param otherType edu.ksu.cis.bandera.jjjc.symboltable.Type
00091  */
00092 public abstract boolean isValidNarrowingConversion(Type otherType);
00093 /**
00094  * 
00095  * @return boolean
00096  * @param otherType edu.ksu.cis.bandera.jjjc.symboltable.Type
00097  */
00098 public abstract boolean isValidWideningConversion(Type otherType);
00099 /**
00100  * 
00101  * @return java.lang.String
00102  */
00103 public String toString() {
00104     return getFullyQualifiedName();
00105 }
00106 }