javaprims.h: Rebuilt class list.
* gcj/javaprims.h: Rebuilt class list. * Makefile.in: Rebuilt. * Makefile.am (core_java_source_files): Added VMClassLoader. * java/lang/VMClassLoader.java: New file. * java/lang/Boolean.java: Merged with Classpath. * java/lang/Byte.java: Merged with Classpath. * java/lang/Integer.java: Merged with Classpath. * java/lang/Long.java: Merged with Classpath. * java/lang/Number.java: Merged with Classpath. * java/lang/Short.java: Merged with Classpath. From-SVN: r44274
This commit is contained in:
Tom Tromey
Tom Tromey
parent
57de7530c4
commit
e109d16f8c
12 changed files with 1763 additions and 750 deletions
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@ -1,246 +1,187 @@
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/* Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation
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/* java.lang.Integer
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Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
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This file is part of libgcj.
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This file is part of GNU Classpath.
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This software is copyrighted work licensed under the terms of the
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Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
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details. */
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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||||
General Public License for more details.
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You should have received a copy of the GNU General Public License
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||||
along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA.
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As a special exception, if you link this library with other files to
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produce an executable, this library does not by itself cause the
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resulting executable to be covered by the GNU General Public License.
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This exception does not however invalidate any other reasons why the
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executable file might be covered by the GNU General Public License. */
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package java.lang;
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/**
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* @author Warren Levy <warrenl@cygnus.com>
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* @date September 11, 1998.
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* Instances of class <code>Integer</code> represent primitive
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* <code>int</code> values.
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*
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* Additionally, this class provides various helper functions and variables
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* related to ints.
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*
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* @author Paul Fisher
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* @author John Keiser
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* @author Warren Levy
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* @since JDK 1.0
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*/
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/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
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* "The Java Language Specification", ISBN 0-201-63451-1
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* plus online API docs for JDK 1.2 beta from http://www.javasoft.com.
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* Status: Believed complete and correct.
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*/
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public final class Integer extends Number implements Comparable
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{
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public static final int MAX_VALUE = 0x7FFFFFFF;
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public static final int MIN_VALUE = 0x80000000;
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// This initialization is seemingly circular, but it is accepted
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// by javac, and is handled specially by gcc.
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public static final Class TYPE = int.class;
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/* The int value of the instance. */
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private int value;
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// compatible with JDK 1.0.2+
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private static final long serialVersionUID = 1360826667806852920L;
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public Integer(int val)
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/**
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* The minimum value an <code>int</code> can represent is -2147483648.
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*/
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public static final int MIN_VALUE = 0x80000000;
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/**
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* The maximum value an <code>int</code> can represent is 2147483647.
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*/
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public static final int MAX_VALUE = 0x7fffffff;
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/**
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* The primitive type <code>int</code> is represented by this
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* <code>Class</code> object.
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*/
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public static final Class TYPE = VMClassLoader.getPrimitiveClass ("int");
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/**
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* The immutable value of this Integer.
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*/
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private final int value;
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/**
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* Create an <code>Integer</code> object representing the value of the
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* <code>int</code> argument.
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*
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* @param value the value to use
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*/
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public Integer(int value)
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{
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value = val;
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this.value = value;
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}
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public Integer(String str) throws NumberFormatException
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/**
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* Create an <code>Integer</code> object representing the value of the
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* argument after conversion to an <code>int</code>.
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*
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* @param s the string to convert.
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*/
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public Integer(String s) throws NumberFormatException
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{
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value = parseInt(str, 10);
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}
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public byte byteValue()
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{
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return (byte) value;
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}
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public double doubleValue()
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{
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return (double) value;
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}
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public float floatValue()
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{
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return (float) value;
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}
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public int intValue()
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{
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return value;
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}
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public long longValue()
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{
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return value;
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}
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public short shortValue()
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{
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return (short) value;
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}
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// Added in JDK 1.2
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public int compareTo(Integer anotherInteger)
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{
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if (this.value == anotherInteger.value)
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return 0;
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// Returns just -1 or 1 on inequality; doing math might overflow the int.
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if (this.value > anotherInteger.value)
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return 1;
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return -1;
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}
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// Added in JDK 1.2
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/** @throws ClassCastException */
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public int compareTo(Object o)
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{
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return this.compareTo((Integer) o);
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}
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public static Integer decode(String str) throws NumberFormatException
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{
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boolean isNeg = false;
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int index = 0;
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int radix = 10;
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final int len;
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if ((len = str.length()) == 0)
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throw new NumberFormatException();
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// Negative numbers are always radix 10.
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if (str.charAt(0) == '-')
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{
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radix = 10;
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index++;
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isNeg = true;
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}
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else if (str.charAt(index) == '#')
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{
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radix = 16;
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index++;
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}
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else if (str.charAt(index) == '0')
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{
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// Check if str is just "0"
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if (len == 1)
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return new Integer(0);
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index++;
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if (str.charAt(index) == 'x')
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{
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radix = 16;
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index++;
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}
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else
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radix = 8;
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}
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if (index >= len)
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throw new NumberFormatException();
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return new Integer(parseInt(str, index, len, isNeg, radix));
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}
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public boolean equals(Object obj)
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{
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return (obj instanceof Integer && ((Integer) obj).value == value);
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}
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public static Integer getInteger(String prop)
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{
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return getInteger(prop, null);
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}
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public static Integer getInteger(String prop, int defval)
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{
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Integer val = getInteger(prop, null);
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return val == null ? new Integer(defval) : val;
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}
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public static Integer getInteger(String prop, Integer defobj)
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{
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try
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{
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String val = System.getProperty(prop);
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if (val != null)
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return decode(val);
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}
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catch (NumberFormatException ex)
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{
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}
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return defobj;
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value = parseInt(s, 10);
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}
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/**
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* Return a hashcode representing this Object.
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*
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* <code>Integer</code>'s hash code is calculated by simply returning its
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* value.
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*
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* @return this Object's hash code.
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*/
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public int hashCode()
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{
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return value;
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}
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public static int parseInt(String str) throws NumberFormatException
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/**
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* If the <code>Object</code> is not <code>null</code>, is an
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* <code>instanceof</code> <code>Integer</code>, and represents
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* the same primitive <code>int</code> value return
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* <code>true</code>. Otherwise <code>false</code> is returned.
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*/
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public boolean equals(Object obj)
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{
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return parseInt(str, 10);
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return obj instanceof Integer && value == ((Integer)obj).value;
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}
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public static int parseInt(String str, int radix) throws NumberFormatException
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/**
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* Get the specified system property as an <code>Integer</code>.
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*
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* The <code>decode()</code> method will be used to interpret the value of
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* the property.
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* @param nm the name of the system property
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* @return the system property as an <code>Integer</code>, or
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* <code>null</code> if the property is not found or cannot be
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* decoded as an <code>Integer</code>.
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* @see java.lang.System#getProperty(java.lang.String)
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* @see #decode(int)
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*/
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public static Integer getInteger(String nm)
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{
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final int len;
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if ((len = str.length()) == 0 ||
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radix < Character.MIN_RADIX || radix > Character.MAX_RADIX)
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throw new NumberFormatException();
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boolean isNeg = false;
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int index = 0;
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if (str.charAt(index) == '-')
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if (len > 1)
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{
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isNeg = true;
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index++;
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}
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else
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throw new NumberFormatException();
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return parseInt(str, index, len, isNeg, radix);
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return getInteger(nm, null);
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}
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private static int parseInt(String str, int index, int len, boolean isNeg,
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int radix) throws NumberFormatException
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/**
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* Get the specified system property as an <code>Integer</code>, or use a
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* default <code>int</code> value if the property is not found or is not
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* decodable.
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*
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* The <code>decode()</code> method will be used to interpret the value of
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* the property.
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*
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* @param nm the name of the system property
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* @param val the default value to use if the property is not found or not
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* a number.
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* @return the system property as an <code>Integer</code>, or the default
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* value if the property is not found or cannot be decoded as an
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* <code>Integer</code>.
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* @see java.lang.System#getProperty(java.lang.String)
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* @see #decode(int)
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* @see #getInteger(java.lang.String,java.lang.Integer)
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*/
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public static Integer getInteger(String nm, int val)
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{
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int val = 0;
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int digval;
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Integer result = getInteger(nm, null);
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return (result == null) ? new Integer(val) : result;
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}
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int max = MAX_VALUE / radix;
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// We can't directly write `max = (MAX_VALUE + 1) / radix'.
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// So instead we fake it.
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if (isNeg && MAX_VALUE % radix == radix - 1)
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++max;
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for ( ; index < len; index++)
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/**
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* Get the specified system property as an <code>Integer</code>, or use a
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* default <code>Integer</code> value if the property is not found or is
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* not decodable.
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*
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* The <code>decode()</code> method will be used to interpret the value of
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* the property.
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*
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* @param nm the name of the system property
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* @param val the default value to use if the property is not found or not
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* a number.
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* @return the system property as an <code>Integer</code>, or the default
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* value if the property is not found or cannot be decoded as an
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* <code>Integer</code>.
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* @see java.lang.System#getProperty(java.lang.String)
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* @see #decode(int)
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* @see #getInteger(java.lang.String,int)
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*/
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public static Integer getInteger(String nm, Integer def)
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{
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String val = System.getProperty(nm);
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if (val == null) return def;
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try
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{
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if (val < 0 || val > max)
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throw new NumberFormatException();
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if ((digval = Character.digit(str.charAt(index), radix)) < 0)
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throw new NumberFormatException();
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// Throw an exception for overflow if result is negative.
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// However, we special-case the most negative value.
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val = val * radix + digval;
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if (val < 0 && (! isNeg || val != MIN_VALUE))
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throw new NumberFormatException();
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return decode(nm);
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}
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catch (NumberFormatException e)
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{
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return def;
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}
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return isNeg ? -(val) : val;
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}
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public static String toBinaryString(int num)
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{
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return toUnsignedString(num, 1);
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}
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public static String toHexString(int num)
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{
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return toUnsignedString(num, 4);
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}
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public static String toOctalString(int num)
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{
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return toUnsignedString(num, 3);
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}
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private static String toUnsignedString(int num, int exp)
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@ -260,16 +201,70 @@ public final class Integer extends Number implements Comparable
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return String.valueOf(buffer, i, 32-i);
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}
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/**
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* Converts the <code>int</code> to a <code>String</code> assuming it is
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* unsigned in base 16.
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* @param i the <code>int</code> to convert to <code>String</code>
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* @return the <code>String</code> representation of the argument.
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*/
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public static String toHexString(int i)
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{
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return toUnsignedString(i, 4);
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}
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/**
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* Converts the <code>int</code> to a <code>String</code> assuming it is
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* unsigned in base 8.
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* @param i the <code>int</code> to convert to <code>String</code>
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* @return the <code>String</code> representation of the argument.
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*/
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public static String toOctalString(int i)
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{
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return toUnsignedString(i, 3);
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}
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||||
|
||||
/**
|
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* Converts the <code>int</code> to a <code>String</code> assuming it is
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* unsigned in base 2.
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* @param i the <code>int</code> to convert to <code>String</code>
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* @return the <code>String</code> representation of the argument.
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||||
*/
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||||
public static String toBinaryString(int i)
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{
|
||||
return toUnsignedString(i, 1);
|
||||
}
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||||
|
||||
/**
|
||||
* Converts the <code>int</code> to a <code>String</code> and assumes
|
||||
* a radix of 10.
|
||||
* @param i the <code>int</code> to convert to <code>String</code>
|
||||
* @return the <code>String</code> representation of the argument.
|
||||
*/
|
||||
public static String toString(int i)
|
||||
{
|
||||
// This is tricky: in libgcj, String.valueOf(int) is a fast native
|
||||
// implementation. In Classpath it just calls back to
|
||||
// Integer.toString(int,int).
|
||||
return String.valueOf (i);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts the <code>Integer</code> value to a <code>String</code> and
|
||||
* assumes a radix of 10.
|
||||
* @return the <code>String</code> representation of this <code>Integer</code>.
|
||||
*/
|
||||
public String toString()
|
||||
{
|
||||
return toString(this.value);
|
||||
}
|
||||
|
||||
public static String toString(int num)
|
||||
{
|
||||
return String.valueOf (num);
|
||||
return toString (value);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts the <code>int</code> to a <code>String</code> using
|
||||
* the specified radix (base).
|
||||
* @param i the <code>int</code> to convert to <code>String</code>.
|
||||
* @param radix the radix (base) to use in the conversion.
|
||||
* @return the <code>String</code> representation of the argument.
|
||||
*/
|
||||
public static String toString(int num, int radix)
|
||||
{
|
||||
// Use optimized method for the typical case.
|
||||
|
|
@ -310,14 +305,266 @@ public final class Integer extends Number implements Comparable
|
|||
return String.valueOf(buffer, i, 33-i);
|
||||
}
|
||||
|
||||
public static Integer valueOf(String str) throws NumberFormatException
|
||||
/**
|
||||
* Creates a new <code>Integer</code> object using the <code>String</code>,
|
||||
* assuming a radix of 10.
|
||||
* @param s the <code>String</code> to convert.
|
||||
* @return the new <code>Integer</code>.
|
||||
* @see #Integer(java.lang.String)
|
||||
* @see #parseInt(java.lang.String)
|
||||
* @exception NumberFormatException thrown if the <code>String</code>
|
||||
* cannot be parsed as an <code>int</code>.
|
||||
*/
|
||||
public static Integer valueOf(String s) throws NumberFormatException
|
||||
{
|
||||
return new Integer(parseInt(str, 10));
|
||||
return new Integer(parseInt(s));
|
||||
}
|
||||
|
||||
public static Integer valueOf(String str, int radix)
|
||||
throws NumberFormatException
|
||||
/**
|
||||
* Creates a new <code>Integer</code> object using the <code>String</code>
|
||||
* and specified radix (base).
|
||||
* @param s the <code>String</code> to convert.
|
||||
* @param radix the radix (base) to convert with.
|
||||
* @return the new <code>Integer</code>.
|
||||
* @see #parseInt(java.lang.String,int)
|
||||
* @exception NumberFormatException thrown if the <code>String</code>
|
||||
* cannot be parsed as an <code>int</code>.
|
||||
*/
|
||||
public static Integer valueOf(String s, int radix)
|
||||
throws NumberFormatException
|
||||
{
|
||||
return new Integer(parseInt(str, radix));
|
||||
return new Integer(parseInt(s, radix));
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts the specified <code>String</code> into an <code>int</code>.
|
||||
* This function assumes a radix of 10.
|
||||
*
|
||||
* @param s the <code>String</code> to convert
|
||||
* @return the <code>int</code> value of the <code>String</code>
|
||||
* argument.
|
||||
* @exception NumberFormatException thrown if the <code>String</code>
|
||||
* cannot be parsed as an <code>int</code>.
|
||||
*/
|
||||
public static int parseInt(String s) throws NumberFormatException
|
||||
{
|
||||
return parseInt(s, 10);
|
||||
}
|
||||
|
||||
/**
|
||||
* Converts the specified <code>String</code> into an <code>int</code>
|
||||
* using the specified radix (base).
|
||||
*
|
||||
* @param s the <code>String</code> to convert
|
||||
* @param radix the radix (base) to use in the conversion
|
||||
* @return the <code>String</code> argument converted to </code>int</code>.
|
||||
* @exception NumberFormatException thrown if the <code>String</code>
|
||||
* cannot be parsed as a <code>int</code>.
|
||||
*/
|
||||
public static int parseInt(String str, int radix)
|
||||
throws NumberFormatException
|
||||
{
|
||||
final int len;
|
||||
|
||||
if ((len = str.length()) == 0 ||
|
||||
radix < Character.MIN_RADIX || radix > Character.MAX_RADIX)
|
||||
throw new NumberFormatException();
|
||||
|
||||
boolean isNeg = false;
|
||||
int index = 0;
|
||||
if (str.charAt(index) == '-')
|
||||
if (len > 1)
|
||||
{
|
||||
isNeg = true;
|
||||
index++;
|
||||
}
|
||||
else
|
||||
throw new NumberFormatException();
|
||||
|
||||
return parseInt(str, index, len, isNeg, radix);
|
||||
}
|
||||
|
||||
private static int parseInt(String str, int index, int len, boolean isNeg,
|
||||
int radix)
|
||||
throws NumberFormatException
|
||||
{
|
||||
int val = 0;
|
||||
int digval;
|
||||
|
||||
int max = MAX_VALUE / radix;
|
||||
// We can't directly write `max = (MAX_VALUE + 1) / radix'.
|
||||
// So instead we fake it.
|
||||
if (isNeg && MAX_VALUE % radix == radix - 1)
|
||||
++max;
|
||||
|
||||
for ( ; index < len; index++)
|
||||
{
|
||||
if (val < 0 || val > max)
|
||||
throw new NumberFormatException();
|
||||
|
||||
if ((digval = Character.digit(str.charAt(index), radix)) < 0)
|
||||
throw new NumberFormatException();
|
||||
|
||||
// Throw an exception for overflow if result is negative.
|
||||
// However, we special-case the most negative value.
|
||||
val = val * radix + digval;
|
||||
if (val < 0 && (! isNeg || val != MIN_VALUE))
|
||||
throw new NumberFormatException();
|
||||
}
|
||||
|
||||
return isNeg ? -(val) : val;
|
||||
}
|
||||
|
||||
/**
|
||||
* Convert the specified <code>String</code> into an <code>Integer</code>.
|
||||
* The <code>String</code> may represent decimal, hexadecimal, or
|
||||
* octal numbers.
|
||||
*
|
||||
* The <code>String</code> argument is interpreted based on the leading
|
||||
* characters. Depending on what the String begins with, the base will be
|
||||
* interpreted differently:
|
||||
*
|
||||
* <table border=1>
|
||||
* <tr><th>Leading<br>Characters</th><th>Base</th></tr>
|
||||
* <tr><td>#</td><td>16</td></tr>
|
||||
* <tr><td>0x</td><td>16</td></tr>
|
||||
* <tr><td>0X</td><td>16</td></tr>
|
||||
* <tr><td>0</td><td>8</td></tr>
|
||||
* <tr><td>Anything<br>Else</td><td>10</td></tr>
|
||||
* </table>
|
||||
*
|
||||
* @param str the <code>String</code> to interpret.
|
||||
* @return the value of the String as an <code>Integer</code>.
|
||||
* @exception NumberFormatException thrown if the <code>String</code>
|
||||
* cannot be parsed as an <code>int</code>.
|
||||
*/
|
||||
public static Integer decode(String str) throws NumberFormatException
|
||||
{
|
||||
boolean isNeg = false;
|
||||
int index = 0;
|
||||
int radix = 10;
|
||||
final int len;
|
||||
|
||||
if (str == null || (len = str.length()) == 0)
|
||||
throw new NumberFormatException("string null or empty");
|
||||
|
||||
// Negative numbers are always radix 10.
|
||||
if (str.charAt(index) == '-')
|
||||
{
|
||||
radix = 10;
|
||||
index++;
|
||||
isNeg = true;
|
||||
}
|
||||
else if (str.charAt(index) == '#')
|
||||
{
|
||||
radix = 16;
|
||||
index++;
|
||||
}
|
||||
else if (str.charAt(index) == '0')
|
||||
{
|
||||
// Check if str is just "0"
|
||||
if (len == 1)
|
||||
return new Integer(0);
|
||||
|
||||
index++;
|
||||
if (str.charAt(index) == 'x' || str.charAt(index) == 'X')
|
||||
{
|
||||
radix = 16;
|
||||
index++;
|
||||
}
|
||||
else
|
||||
radix = 8;
|
||||
}
|
||||
|
||||
if (index >= len)
|
||||
throw new NumberFormatException("empty value");
|
||||
|
||||
return new Integer(parseInt(str, index, len, isNeg, radix));
|
||||
}
|
||||
|
||||
/** Return the value of this <code>Integer</code> as a <code>byte</code>.
|
||||
** @return the value of this <code>Integer</code> as a <code>byte</code>.
|
||||
**/
|
||||
public byte byteValue()
|
||||
{
|
||||
return (byte) value;
|
||||
}
|
||||
|
||||
/** Return the value of this <code>Integer</code> as a <code>short</code>.
|
||||
** @return the value of this <code>Integer</code> as a <code>short</code>.
|
||||
**/
|
||||
public short shortValue()
|
||||
{
|
||||
return (short) value;
|
||||
}
|
||||
|
||||
/** Return the value of this <code>Integer</code> as an <code>int</code>.
|
||||
** @return the value of this <code>Integer</code> as an <code>int</code>.
|
||||
**/
|
||||
public int intValue()
|
||||
{
|
||||
return value;
|
||||
}
|
||||
|
||||
/** Return the value of this <code>Integer</code> as a <code>long</code>.
|
||||
** @return the value of this <code>Integer</code> as a <code>long</code>.
|
||||
**/
|
||||
public long longValue()
|
||||
{
|
||||
return value;
|
||||
}
|
||||
|
||||
/** Return the value of this <code>Integer</code> as a <code>float</code>.
|
||||
** @return the value of this <code>Integer</code> as a <code>float</code>.
|
||||
**/
|
||||
public float floatValue()
|
||||
{
|
||||
return value;
|
||||
}
|
||||
|
||||
/** Return the value of this <code>Integer</code> as a <code>double</code>.
|
||||
** @return the value of this <code>Integer</code> as a <code>double</code>.
|
||||
**/
|
||||
public double doubleValue()
|
||||
{
|
||||
return value;
|
||||
}
|
||||
|
||||
/**
|
||||
* Compare two Integers numerically by comparing their
|
||||
* <code>int</code> values.
|
||||
* @return a positive value if this <code>Integer</code> is greater
|
||||
* in value than the argument <code>Integer</code>; a negative value
|
||||
* if this <code>Integer</code> is smaller in value than the argument
|
||||
* <code>Integer</code>; and <code>0</code>, zero, if this
|
||||
* <code>Integer</code> is equal in value to the argument
|
||||
* <code>Integer</code>.
|
||||
*
|
||||
* @since 1.2
|
||||
*/
|
||||
public int compareTo(Integer i)
|
||||
{
|
||||
if (this.value == i.value)
|
||||
return 0;
|
||||
|
||||
// Returns just -1 or 1 on inequality; doing math might overflow.
|
||||
if (this.value > i.value)
|
||||
return 1;
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
/**
|
||||
* Behaves like <code>compareTo(java.lang.Integer)</code> unless the Object
|
||||
* is not a <code>Integer</code>. Then it throws a
|
||||
* <code>ClassCastException</code>.
|
||||
* @exception ClassCastException if the argument is not a
|
||||
* <code>Integer</code>.
|
||||
*
|
||||
* @since 1.2
|
||||
*/
|
||||
public int compareTo(Object o)
|
||||
{
|
||||
return compareTo((Integer)o);
|
||||
}
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue