Java tutorial
/** * Copyright (C) 2010-2016 Gordon Fraser, Andrea Arcuri and EvoSuite * contributors * * This file is part of EvoSuite. * * EvoSuite is free software: you can redistribute it and/or modify it * under the terms of the GNU Lesser General Public License as published * by the Free Software Foundation, either version 3.0 of the License, or * (at your option) any later version. * * EvoSuite 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 * Lesser Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with EvoSuite. If not, see <http://www.gnu.org/licenses/>. */ /** * */ package org.evosuite.utils; import org.apache.commons.lang3.StringEscapeUtils; /** * <p> * NumberFormatter class. * </p> * * @author Gordon Fraser */ public class NumberFormatter { /** * <p> * getNumberString * </p> * * @param value * a {@link java.lang.Object} object. * @return a {@link java.lang.String} object. */ public static String getNumberString(Object value) { if (value == null) return "null"; else if (value.getClass().equals(char.class) || value.getClass().equals(Character.class)) { // StringEscapeUtils fails to escape a single quote char if (Character.valueOf('\'').equals(value)) { return "'\\\''"; } else { return "'" + StringEscapeUtils.escapeJava(Character.toString((Character) value)) + "'"; } } else if (value.getClass().equals(String.class)) { return "\"" + StringEscapeUtils.escapeJava((String) value) + "\""; } else if (value.getClass().equals(float.class) || value.getClass().equals(Float.class)) { if (value.toString().equals("" + Float.NaN)) return "Float.NaN"; else if (value.toString().equals("" + Float.NEGATIVE_INFINITY)) return "Float.NEGATIVE_INFINITY"; else if (value.toString().equals("" + Float.POSITIVE_INFINITY)) return "Float.POSITIVE_INFINITY"; else if (((Float) value) < 0F) return "(" + value + "F)"; else return value + "F"; } else if (value.getClass().equals(double.class) || value.getClass().equals(Double.class)) { if (value.toString().equals("" + Double.NaN)) return "Double.NaN"; else if (value.toString().equals("" + Double.NEGATIVE_INFINITY)) return "Double.NEGATIVE_INFINITY"; else if (value.toString().equals("" + Double.POSITIVE_INFINITY)) return "Double.POSITIVE_INFINITY"; else if (((Double) value) < 0.0) return "(" + value + ")"; else return value.toString(); } else if (value.getClass().equals(long.class) || value.getClass().equals(Long.class)) { if (((Long) value) < 0) return "(" + value + "L)"; else return value + "L"; } else if (value.getClass().equals(byte.class) || value.getClass().equals(Byte.class)) { if (((Byte) value) < 0) return "(byte) (" + value + ")"; else return "(byte)" + value; } else if (value.getClass().equals(short.class) || value.getClass().equals(Short.class)) { if (((Short) value) < 0) return "(short) (" + value + ")"; else return "(short)" + value; } else if (value.getClass().equals(int.class) || value.getClass().equals(Integer.class)) { int val = ((Integer) value).intValue(); if (val == Integer.MAX_VALUE) return "Integer.MAX_VALUE"; else if (val == Integer.MIN_VALUE) return "Integer.MIN_VALUE"; else if (((Integer) value) < 0) return "(" + value + ")"; else return "" + val; } else if (value.getClass().isEnum() || value instanceof Enum) { // java.util.concurrent.TimeUnit is an example where the enum // elements are anonymous inner classes, and then isEnum does // not return true apparently? So we check using instanceof as well. Class<?> clazz = value.getClass(); String className = clazz.getSimpleName(); while (clazz.getEnclosingClass() != null) { String enclosingName = clazz.getEnclosingClass().getSimpleName(); className = enclosingName + "." + className; clazz = clazz.getEnclosingClass(); } // We have to do this here to avoid a double colon in the TimeUnit example if (!className.endsWith(".")) className += "."; try { if (value.getClass().getField(value.toString()) != null) return className + value; else if (((Enum<?>) value).name() != null) return className + ((Enum<?>) value).name(); else return "Enum.valueOf(" + className + "class, \"" + value + "\")"; } catch (Exception e) { if (((Enum<?>) value).name() != null) return className + ((Enum<?>) value).name(); else return "Enum.valueOf(" + className + "class /* " + e + " */, \"" + value + "\")"; // return className + "valueOf(\"" + value + "\")"; } } else if (value.getClass().equals(Boolean.class)) { return value.toString(); } else { // This should not happen assert (false); return value.toString(); } } /** * <p> * getBoxedClassName * </p> * * @param value * a {@link java.lang.Object} object. * @return a {@link java.lang.String} object. */ public static String getBoxedClassName(Object value) { if (value.getClass().equals(Double.class)) return "double"; else if (value.getClass().equals(Float.class)) return "float"; else if (value.getClass().equals(Long.class)) return "long"; else if (value.getClass().equals(Boolean.class)) return "boolean"; else if (value.getClass().equals(Short.class)) return "short"; else if (value.getClass().equals(Integer.class)) return "int"; else if (value.getClass().equals(Byte.class)) return "byte"; else if (value.getClass().equals(Character.class)) return "char"; else return value.getClass().getSimpleName(); } }