com.itextpdf.text.pdf.RefKey Maven / Gradle / Ivy
/*
* $Id: 6c8d4a81336e865b68ebca1de9ce49dabc0007f4 $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Pavel Alay, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
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*/
package com.itextpdf.text.pdf;
/**
* A key to allow us to hash indirect references
*/
public class RefKey {
int num;
int gen;
RefKey(int num, int gen) {
this.num = num;
this.gen = gen;
}
public RefKey(PdfIndirectReference ref) {
num = ref.getNumber();
gen = ref.getGeneration();
}
RefKey(PRIndirectReference ref) {
num = ref.getNumber();
gen = ref.getGeneration();
}
@Override
public int hashCode() {
return (gen<<16)+num;
}
@Override
public boolean equals(Object o) {
if (!(o instanceof RefKey)) return false;
RefKey other = (RefKey)o;
return this.gen == other.gen && this.num == other.num;
}
@Override
public String toString() {
return Integer.toString(num) + ' ' + gen;
}
}