+++ /dev/null
-/* java.lang.Long
- Copyright (C) 1998, 1999, 2001 Free Software Foundation, Inc.
-
-This file is part of GNU Classpath.
-
-GNU Classpath is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
-
-GNU Classpath 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
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with GNU Classpath; see the file COPYING. If not, write to the
-Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-02111-1307 USA.
-
-Linking this library statically or dynamically with other modules is
-making a combined work based on this library. Thus, the terms and
-conditions of the GNU General Public License cover the whole
-combination.
-
-As a special exception, the copyright holders of this library give you
-permission to link this library with independent modules to produce an
-executable, regardless of the license terms of these independent
-modules, and to copy and distribute the resulting executable under
-terms of your choice, provided that you also meet, for each linked
-independent module, the terms and conditions of the license of that
-module. An independent module is a module which is not derived from
-or based on this library. If you modify this library, you may extend
-this exception to your version of the library, but you are not
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-
-package java.lang;
-
-/**
- * Instances of class <code>Double</code> represent primitive
- * <code>double</code> values.
- *
- * Additionally, this class provides various helper functions and variables
- * related to longs.
- *
- * @author Paul Fisher
- * @author John Keiser
- * @author Warren Levy
- * @since JDK 1.0
- */
-public final class Long extends Number implements Comparable
-{
- // compatible with JDK 1.0.2+
- static final long serialVersionUID = 4290774380558885855L;
-
- /**
- * The minimum value a <code>long</code> can represent is
- * -9223372036854775808.
- */
- public static final long MIN_VALUE = 0x8000000000000000L;
-
- /**
- * The maximum value a <code>long</code> can represent is
- * 9223372036854775807.
- */
- public static final long MAX_VALUE = 0x7fffffffffffffffL;
-
- /**
- * The primitive type <code>long</code> is represented by this
- * <code>Class</code> object.
- */
- public static final Class TYPE = VMClassLoader.getPrimitiveClass ('J');
-
- /**
- * The immutable value of this Long.
- */
- private final long value;
-
- /**
- * Create a <code>Long</code> object representing the value of the
- * <code>long</code> argument.
- *
- * @param value the value to use
- */
- public Long(long value)
- {
- this.value = value;
- }
-
- /**
- * Create a <code>Long</code> object representing the value of the
- * argument after conversion to a <code>long</code>.
- *
- * @param s the string to convert.
- */
- public Long(String s) throws NumberFormatException
- {
- value = parseLong(s, 10);
- }
-
- /**
- * If the <code>Object</code> is not <code>null</code>, is an
- * <code>instanceof</code> <code>Long</code>, and represents
- * the same primitive <code>long</code> value return
- * <code>true</code>. Otherwise <code>false</code> is returned.
- */
- public boolean equals(Object obj)
- {
- return obj instanceof Long && ((Long)obj).value == value;
- }
-
- /**
- * Return a hashcode representing this Object.
- *
- * <code>Long</code>'s hash code is calculated by simply returning its
- * value.
- *
- * @return this Object's hash code.
- */
- public int hashCode()
- {
- return (int)(value^(value>>>32));
- }
-
- /**
- * Get the specified system property as a <code>Long</code>.
- *
- * A method similar to <code>Integer</code>'s <code>decode()</code> will be
- * used to interpret the value of the property.
- *
- * @param nm the name of the system property
- * @return the system property as an <code>Long</code>, or
- * <code>null</code> if the property is not found or cannot be
- * decoded as a <code>Long</code>.
- * @see java.lang.System#getProperty(java.lang.String)
- * @see java.lang.Integer#decode(int)
- */
- public static Long getLong(String nm)
- {
- return getLong(nm, null);
- }
-
- /**
- * Get the specified system property as an <code>Long</code>, or use a
- * default <code>long</code> value if the property is not found or is not
- * decodable.
- *
- * A method similar to <code>Integer</code>'s <code>decode()</code> will be
- * used to interpret the value of the property.
- *
- * @param nm the name of the system property
- * @param val the default value to use if the property is not found or not
- * a number.
- * @return the system property as a <code>Long</code>, or the default
- * value if the property is not found or cannot be decoded as a
- * <code>Long</code>.
- * @see java.lang.System#getProperty(java.lang.String)
- * @see java.lang.Integer#decode(int)
- * @see #getLong(java.lang.String,java.lang.Long)
- */
- public static Long getLong(String nm, long val)
- {
- Long result = getLong(nm, null);
- return (result == null) ? new Long(val) : result;
- }
-
- /**
- * Get the specified system property as an <code>Long</code>, or use a
- * default <code>Long</code> value if the property is not found or is
- * not decodable.
- *
- * The <code>decode()</code> method will be used to interpret the value of
- * the property.
- *
- * @param nm the name of the system property
- * @param val the default value to use if the property is not found or not
- * a number.
- * @return the system property as an <code>Long</code>, or the default
- * value if the property is not found or cannot be decoded as an
- * <code>Long</code>.
- * @see java.lang.System#getProperty(java.lang.String)
- * @see java.lang.Integer#decode(int)
- * @see #getLong(java.lang.String,long)
- */
- public static Long getLong(String nm, Long def)
- {
- nm = System.getProperty(nm);
- if (nm == null || "".equals(nm))
- return def;
- try
- {
- return decode(nm);
- }
- catch (NumberFormatException e)
- {
- return def;
- }
- }
-
- private static String toUnsignedString(long num, int exp)
- {
- // Use an array large enough for a binary number.
- int radix = 1 << exp;
- int mask = radix - 1;
- char[] buffer = new char[64];
- int i = 64;
- do
- {
- buffer[--i] = Character.forDigit((int) num & mask, radix);
- num = num >>> exp;
- }
- while (num != 0);
-
- return String.valueOf(buffer, i, 64-i);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> assuming it is
- * unsigned in base 16.
- * @param i the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument.
- */
- public static String toHexString(long i)
- {
- return toUnsignedString(i, 4);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> assuming it is
- * unsigned in base 8.
- * @param i the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument.
- */
- public static String toOctalString(long i)
- {
- return toUnsignedString(i, 3);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> assuming it is
- * unsigned in base 2.
- * @param i the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument.
- */
- public static String toBinaryString(long i) {
- return toUnsignedString(i, 1);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> and assumes
- * a radix of 10.
- * @param num the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument.
- */
- public static String toString(long num)
- {
- // Use the Integer toString for efficiency if possible.
- if (num <= Integer.MAX_VALUE && num >= Integer.MIN_VALUE)
- return Integer.toString((int) num);
-
- // Use an array large enough for "-9223372036854775808"; i.e. 20 chars.
- char[] buffer = new char[20];
- int i = 20;
- boolean isNeg;
- if (num < 0)
- {
- isNeg = true;
- num = -(num);
- if (num < 0)
- {
- // Must be MIN_VALUE, so handle this special case.
- buffer[--i] = '8';
- num = 922337203685477580L;
- }
- }
- else
- isNeg = false;
-
- do
- {
- buffer[--i] = (char) ((int) '0' + (num % 10));
- num /= 10;
- }
- while (num > 0);
-
- if (isNeg)
- buffer[--i] = '-';
-
- return String.valueOf(buffer, i, 20-i);
- }
-
- /**
- * Converts the <code>Long</code> value to a <code>String</code> and
- * assumes a radix of 10.
- * @return the <code>String</code> representation of this <code>Long</code>.
- */
- public String toString()
- {
- return toString(value);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> using
- * the specified radix (base).
- * @param num the <code>long</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(long num, int radix)
- {
- // Use optimized method for the typical case.
- if (radix == 10 ||
- radix < Character.MIN_RADIX || radix > Character.MAX_RADIX)
- return toString(num);
-
- // Use the Integer toString for efficiency if possible.
- if (num <= Integer.MAX_VALUE && num >= Integer.MIN_VALUE)
- return Integer.toString((int) num, radix);
-
- // For negative numbers, print out the absolute value w/ a leading '-'.
- // Use an array large enough for a binary number.
- char[] buffer = new char[65];
- int i = 65;
- boolean isNeg;
- if (num < 0)
- {
- isNeg = true;
- num = -(num);
-
- // When the value is MIN_VALUE, it overflows when made positive
- if (num < 0)
- {
- buffer[--i] = Character.forDigit((int) (-(num + radix) % radix),
- radix);
- num = -(num / radix);
- }
- }
- else
- isNeg = false;
-
- do
- {
- buffer[--i] = Character.forDigit((int) (num % radix), radix);
- num /= radix;
- }
- while (num > 0);
-
- if (isNeg)
- buffer[--i] = '-';
-
- return String.valueOf(buffer, i, 65-i);
- }
-
- /**
- * Creates a new <code>Long</code> object using the <code>String</code>,
- * assuming a radix of 10.
- * @param s the <code>String</code> to convert.
- * @return the new <code>Long</code>.
- * @see #Long(java.lang.String)
- * @see #parseLong(java.lang.String)
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>long</code>.
- */
- public static Long valueOf(String s) throws NumberFormatException
- {
- return new Long(parseLong(s));
- }
-
- /**
- * Creates a new <code>Long</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>Long</code>.
- * @see #parseLong(java.lang.String,int)
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>long</code>.
- */
- public static Long valueOf(String s, int radix) throws NumberFormatException
- {
- return new Long(parseLong(s, radix));
- }
-
- /**
- * Converts the specified <code>String</code> into a <code>long</code>.
- * This function assumes a radix of 10.
- *
- * @param s the <code>String</code> to convert
- * @return the <code>long</code> value of the <code>String</code>
- * argument.
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>long</code>.
- */
- public static long parseLong(String s) throws NumberFormatException
- {
- return parseLong(s, 10);
- }
-
- /**
- * Converts the specified <code>String</code> into a <code>long</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>long</code>.
- * @exception NumberFormatException thrown if the <code>String</code>
- * cannot be parsed as a <code>long</code>.
- */
- public static long parseLong(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 parseLong(str, index, len, isNeg, radix);
- }
-
- public static Long decode(String str) throws NumberFormatException
- {
- boolean isNeg = false;
- int index = 0;
- int radix = 10;
- final int len;
-
- if ((len = str.length()) == 0)
- throw new NumberFormatException();
-
- // Negative numbers are always radix 10.
- if (str.charAt(0) == '-')
- {
- 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 Long(0L);
-
- index++;
- if (str.charAt(index) == 'x')
- {
- radix = 16;
- index++;
- }
- else
- radix = 8;
- }
-
- if (index >= len)
- throw new NumberFormatException();
-
- return new Long(parseLong(str, index, len, isNeg, radix));
- }
-
- private static long parseLong(String str, int index, int len, boolean isNeg,
- int radix) throws NumberFormatException
- {
- long val = 0;
- int digval;
-
- long 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;
- }
-
- /** Return the value of this <code>Long</code> as an <code>short</code>.
- ** @return the value of this <code>Long</code> as an <code>short</code>.
- **/
- public byte byteValue()
- {
- return (byte) value;
- }
-
- /** Return the value of this <code>Long</code> as an <code>short</code>.
- ** @return the value of this <code>Long</code> as an <code>short</code>.
- **/
- public short shortValue()
- {
- return (short) value;
- }
-
- /** Return the value of this <code>Long</code> as an <code>int</code>.
- ** @return the value of this <code>Long</code> as an <code>int</code>.
- **/
- public int intValue()
- {
- return (int) value;
- }
-
- /** Return the value of this <code>Long</code> as a <code>long</code>.
- ** @return the value of this <code>Long</code> as a <code>long</code>.
- **/
- public long longValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Long</code> as a <code>float</code>.
- ** @return the value of this <code>Long</code> as a <code>float</code>.
- **/
- public float floatValue()
- {
- return value;
- }
-
- /** Return the value of this <code>Long</code> as a <code>double</code>.
- ** @return the value of this <code>Long</code> as a <code>double</code>.
- **/
- public double doubleValue()
- {
- return value;
- }
-
- /**
- * Compare two Longs numerically by comparing their
- * <code>long</code> values.
- * @return a positive value if this <code>Long</code> is greater
- * in value than the argument <code>Long</code>; a negative value
- * if this <code>Long</code> is smaller in value than the argument
- * <code>Long</code>; and <code>0</code>, zero, if this
- * <code>Long</code> is equal in value to the argument
- * <code>Long</code>.
- *
- * @since 1.2
- */
- public int compareTo(Long l)
- {
- if (this.value == l.value)
- return 0;
-
- // Returns just -1 or 1 on inequality; doing math might overflow the long.
- if (this.value > l.value)
- return 1;
-
- return -1;
- }
-
- /**
- * Behaves like <code>compareTo(java.lang.Long)</code> unless the Object
- * is not a <code>Long</code>. Then it throws a
- * <code>ClassCastException</code>.
- * @exception ClassCastException if the argument is not a
- * <code>Long</code>.
- *
- * @since 1.2
- */
- public int compareTo(Object o)
- {
- return compareTo((Long)o);
- }
-}
projects / msp430-gcc.git / blobdiff