001/* 002 * Units of Measurement Reference Implementation 003 * Copyright (c) 2005-2020, Units of Measurement project. 004 * 005 * All rights reserved. 006 * 007 * Redistribution and use in source and binary forms, with or without modification, 008 * are permitted provided that the following conditions are met: 009 * 010 * 1. Redistributions of source code must retain the above copyright notice, 011 * this list of conditions and the following disclaimer. 012 * 013 * 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions 014 * and the following disclaimer in the documentation and/or other materials provided with the distribution. 015 * 016 * 3. Neither the name of JSR-385, Indriya nor the names of their contributors may be used to endorse or promote products 017 * derived from this software without specific prior written permission. 018 * 019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 020 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 021 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 022 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 023 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 026 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, 028 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 029 */ 030package tech.units.indriya.internal.format; 031 032import java.text.FieldPosition; 033import java.text.NumberFormat; 034import java.text.ParsePosition; 035 036/** 037 * Wraps a given {@link NumberFormat} and extends it to also support the rational number format. 038 * <p> 039 * eg. {@code 5รท3} 040 * 041 * @author Andi Huber 042 * 043 */ 044public class RationalNumberFormat extends NumberFormat { 045 046 private static final long serialVersionUID = 1L; 047 048 private final NumberFormat numberFormat; 049 050 public static RationalNumberFormat wrap(NumberFormat numberFormat) { 051 return new RationalNumberFormat(numberFormat); 052 } 053 054 private RationalNumberFormat(NumberFormat numberFormat) { 055 this.numberFormat = numberFormat; 056 } 057 058 @Override 059 public StringBuffer format(double number, StringBuffer toAppendTo, FieldPosition pos) { 060 return numberFormat.format(number, toAppendTo, pos); 061 } 062 063 @Override 064 public StringBuffer format(long number, StringBuffer toAppendTo, FieldPosition pos) { 065 return numberFormat.format(number, toAppendTo, pos); 066 } 067 068 @Override 069 public Number parse(String source, ParsePosition parsePosition) { 070 return new RationalNumberScanner(source, parsePosition, numberFormat).getNumber(); 071 } 072 073}