125 lines
2.1 KiB
Java
125 lines
2.1 KiB
Java
/*******************************************************************************
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* Copyright (c) 2020 MINRES Technologies GmbH and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* MINRES Technologies GmbH - initial API and implementation
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*******************************************************************************/
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package com.minres.scviewer.database;
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/**
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* The Enum BitValue.
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*/
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public enum BitValue {
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/** The zero. */
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ZERO,
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/** The one. */
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ONE,
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/** The x. */
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X,
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/** The z. */
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Z;
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/** The Constant ORDINAL_TABLE. */
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private static final BitValue[] ORDINAL_TABLE = BitValue.values();
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/**
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* From char.
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*
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* @param c the c
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* @return the bit value
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*/
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public static BitValue fromChar(char c) {
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switch (c) {
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case '0':
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return ZERO;
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case '1':
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return ONE;
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case 'x':
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case 'X':
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return X;
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case 'z':
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case 'Z':
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return Z;
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default:
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throw new NumberFormatException("unknown digit " + c);
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}
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}
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/**
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* To char.
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*
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* @return the char
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*/
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public char toChar() {
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switch (this) {
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case ZERO:
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return '0';
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case ONE:
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return '1';
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case X:
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return 'x';
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case Z:
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return 'z';
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}
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return ' '; // Unreachable?
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}
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/**
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* From int.
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*
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* @param i the i
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* @return the bit value
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*/
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public static BitValue fromInt(int i) {
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if (i == 0) {
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return ZERO;
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} else {
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return ONE;
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}
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}
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/**
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* To int.
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*
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* @return the int
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*/
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public int toInt() {
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return (this == ONE) ? 1 : 0;
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}
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/**
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* From ordinal.
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*
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* @param ord the ord
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* @return the bit value
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*/
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public static BitValue fromOrdinal(int ord) {
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return ORDINAL_TABLE[ord];
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}
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/**
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* Compare.
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*
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* @param other the other
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* @return the int
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*/
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public int compare(BitValue other) {
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if (this == ONE && other == ZERO) {
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return 1;
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} else if (this == ZERO && other == ONE) {
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return -1;
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} else {
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// Either these are equal, or there is an X and Z, which match everything.
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return 0;
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}
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}
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} |