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Java Source | 1998-09-22 | 2.6 KB | 96 lines |
- /*
- * @(#)ObjectStreamField.java 1.10 98/07/01
- *
- * Copyright 1995-1998 by Sun Microsystems, Inc.,
- * 901 San Antonio Road, Palo Alto, California, 94303, U.S.A.
- * All rights reserved.
- *
- * This software is the confidential and proprietary information
- * of Sun Microsystems, Inc. ("Confidential Information"). You
- * shall not disclose such Confidential Information and shall use
- * it only in accordance with the terms of the license agreement
- * you entered into with Sun.
- */
-
- package java.io;
-
- /**
- * A description of a field in a class.
- *
- * @author unascribed
- * @version 1.10, 07/01/98
- */
- class ObjectStreamField {
- ObjectStreamField(String n, char t, int o, String ts)
- {
- // System.out.println("new field, " + n + " " + t + " " + ts);
- name = n;
- type = t;
- offset = o;
- typeString = ts;
- }
-
- /*
- * Default constructor creates an empty field.
- * Usually used just to get to the sort functions.
- */
- ObjectStreamField() {
- }
-
- /**
- * test if this field is a primitive or not.
- */
- boolean isPrimitive() {
- return (type != '[' && type != 'L');
- }
-
- /**
- * Compare this with another ObjectStreamField.
- * return -1 if this is smaller, 0 if equal, 1 if greater
- * types that are primitives are "smaller" than objects.
- * if equal, the names are compared.
- */
- int compare(ObjectStreamField other) {
- boolean thisprim = (typeString == null);
- boolean otherprim = (other.typeString == null);
-
- if (thisprim != otherprim) {
- return (thisprim ? -1 : 1);
- }
- return name.compareTo(other.name);
- }
-
- /**
- * Compare the types of two class descriptors.
- * The match if they have the same primitive types.
- * or if they are both objects and the object types match.
- */
- boolean typeEquals(ObjectStreamField other) {
- if (other == null || type != other.type)
- return false;
-
- /* Return true if the primitive types matched */
- if (typeString == null && other.typeString == null)
- return true;
-
- return ObjectStreamClass.compareClassNames(typeString,
- other.typeString,
- '/');
- }
-
- /**
- * Return a string describing this field.
- */
- public String toString() {
- if (typeString != null)
- return typeString + " " + name + " @" + offset;
- else
- return type + " " + name + " @" + offset;
- }
-
- String name; // the name of the field
- char type; // type first byte of the type signature
- int offset; // Offset into the object of the field
- String typeString; // iff object, typename
- }
-