001 /* 002 * Copyright 2008 - 2008 JEuclid, http://jeuclid.sf.net 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017 /* $Id: OperatorForm.java,v cae99f384592 2009/06/03 12:42:28 maxberger $ */ 018 019 package net.sourceforge.jeuclid.elements.support.operatordict; 020 021 import java.util.Locale; 022 023 /** 024 * @version $Revision: cae99f384592 $ 025 */ 026 public enum OperatorForm { 027 /** Prefix form, e.g. +a. */ 028 PREFIX, 029 /** Infix form, e.g. a+a. */ 030 INFIX, 031 /** Postfix form, e.g. a+. */ 032 POSTFIX; 033 034 private OperatorForm() { 035 // Empty on purpose. 036 } 037 038 /** 039 * Parse a String into an OperatorForm. 040 * 041 * @param form 042 * the string to parse 043 * @return an OperatorForm 044 */ 045 public static OperatorForm parseOperatorForm(final String form) { 046 try { 047 return OperatorForm.valueOf(form.toUpperCase(Locale.US)); 048 } catch (final IllegalArgumentException iae) { 049 return OperatorForm.INFIX; 050 } 051 } 052 }