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authorTom Tromey <tromey@redhat.com>2005-07-16 01:27:14 +0000
committerTom Tromey <tromey@gcc.gnu.org>2005-07-16 01:27:14 +0000
commitb0fa81eea9a270f23d6ad67ca7a6d25c18d20da1 (patch)
tree8762d1f992e2f725a6bde1ff966ed6f1e5f4f823 /libjava/java/lang/Long.java
parentea54b29342c8506acb4f858c68340c44b72e3532 (diff)
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Major merge with Classpath.
Removed many duplicate files. * HACKING: Updated.x * classpath: Imported new directory. * standard.omit: New file. * Makefile.in, aclocal.m4, configure: Rebuilt. * sources.am: New file. * configure.ac: Run Classpath configure script. Moved code around to support. Disable xlib AWT peers (temporarily). * Makefile.am (SUBDIRS): Added 'classpath' (JAVAC): Removed. (AM_CPPFLAGS): Added more -I options. (BOOTCLASSPATH): Simplified. Completely redid how sources are built. Include sources.am. * include/Makefile.am (tool_include__HEADERS): Removed jni.h. * include/jni.h: Removed (in Classpath). * scripts/classes.pl: Updated to look at built classes. * scripts/makemake.tcl: New file. * testsuite/libjava.jni/jni.exp (gcj_jni_compile_c_to_so): Added -I options. (gcj_jni_invocation_compile_c_to_binary): Likewise. From-SVN: r102082
Diffstat (limited to 'libjava/java/lang/Long.java')
-rw-r--r--libjava/java/lang/Long.java614
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diff --git a/libjava/java/lang/Long.java b/libjava/java/lang/Long.java
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--- a/libjava/java/lang/Long.java
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@@ -1,614 +0,0 @@
-/* Long.java -- object wrapper for long
- Copyright (C) 1998, 1999, 2001, 2002, 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 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>Long</code> represent primitive
- * <code>long</code> values.
- *
- * Additionally, this class provides various helper functions and variables
- * related to longs.
- *
- * @author Paul Fisher
- * @author John Keiser
- * @author Warren Levy
- * @author Eric Blake (ebb9@email.byu.edu)
- * @since 1.0
- * @status updated to 1.4
- */
-public final class Long extends Number implements Comparable
-{
- /**
- * Compatible with JDK 1.0.2+.
- */
- private static final long serialVersionUID = 4290774380558885855L;
-
- /**
- * The minimum value a <code>long</code> can represent is
- * -9223372036854775808L (or -2<sup>63</sup>).
- */
- public static final long MIN_VALUE = 0x8000000000000000L;
-
- /**
- * The maximum value a <code>long</code> can represent is
- * 9223372036854775807 (or 2<sup>63</sup> - 1).
- */
- public static final long MAX_VALUE = 0x7fffffffffffffffL;
-
- /**
- * The primitive type <code>long</code> is represented by this
- * <code>Class</code> object.
- * @since 1.1
- */
- public static final Class TYPE = VMClassLoader.getPrimitiveClass ('J');
-
- /**
- * The immutable value of this Long.
- *
- * @serial the wrapped 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
- * @throws NumberFormatException if the String does not contain a long
- * @see #valueOf(String)
- */
- public Long(String s)
- {
- value = parseLong(s, 10, false);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> using
- * the specified radix (base). If the radix exceeds
- * <code>Character.MIN_RADIX</code> or <code>Character.MAX_RADIX</code>, 10
- * is used instead. If the result is negative, the leading character is
- * '-' ('\\u002D'). The remaining characters come from
- * <code>Character.forDigit(digit, radix)</code> ('0'-'9','a'-'z').
- *
- * @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 the Integer toString for efficiency if possible.
- if ((int) num == num)
- return Integer.toString((int) num, radix);
-
- if (radix < Character.MIN_RADIX || radix > Character.MAX_RADIX)
- radix = 10;
-
- // 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 = false;
- if (num < 0)
- {
- isNeg = true;
- num = -num;
-
- // When the value is MIN_VALUE, it overflows when made positive
- if (num < 0)
- {
- buffer[--i] = digits[(int) (-(num + radix) % radix)];
- num = -(num / radix);
- }
- }
-
- do
- {
- buffer[--i] = digits[(int) (num % radix)];
- num /= radix;
- }
- while (num > 0);
-
- if (isNeg)
- buffer[--i] = '-';
-
- // Package constructor avoids an array copy.
- return new String(buffer, i, 65 - i, true);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> assuming it is
- * unsigned in base 16.
- *
- * @param l the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument
- */
- public static String toHexString(long l)
- {
- return toUnsignedString(l, 4);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> assuming it is
- * unsigned in base 8.
- *
- * @param l the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument
- */
- public static String toOctalString(long l)
- {
- return toUnsignedString(l, 3);
- }
-
- /**
- * Converts the <code>long</code> to a <code>String</code> assuming it is
- * unsigned in base 2.
- *
- * @param l the <code>long</code> to convert to <code>String</code>
- * @return the <code>String</code> representation of the argument
- */
- public static String toBinaryString(long l)
- {
- return toUnsignedString(l, 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
- * @see #toString(long, int)
- */
- public static String toString(long num)
- {
- return toString(num, 10);
- }
-
- /**
- * Converts the specified <code>String</code> into an <code>int</code>
- * using the specified radix (base). The string must not be <code>null</code>
- * or empty. It may begin with an optional '-', which will negate the answer,
- * provided that there are also valid digits. Each digit is parsed as if by
- * <code>Character.digit(d, radix)</code>, and must be in the range
- * <code>0</code> to <code>radix - 1</code>. Finally, the result must be
- * within <code>MIN_VALUE</code> to <code>MAX_VALUE</code>, inclusive.
- * Unlike Double.parseDouble, you may not have a leading '+'; and 'l' or
- * 'L' as the last character is only valid in radices 22 or greater, where
- * it is a digit and not a type indicator.
- *
- * @param str 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>
- * @throws NumberFormatException if <code>s</code> cannot be parsed as a
- * <code>long</code>
- */
- public static long parseLong(String str, int radix)
- {
- return parseLong(str, radix, false);
- }
-
- /**
- * 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>int</code> value of <code>s</code>
- * @throws NumberFormatException if <code>s</code> cannot be parsed as a
- * <code>long</code>
- * @see #parseLong(String, int)
- */
- public static long parseLong(String s)
- {
- return parseLong(s, 10, false);
- }
-
- /**
- * 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>
- * @throws NumberFormatException if <code>s</code> cannot be parsed as a
- * <code>long</code>
- * @see #parseLong(String, int)
- */
- public static Long valueOf(String s, int radix)
- {
- return new Long(parseLong(s, radix, false));
- }
-
- /**
- * 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>
- * @throws NumberFormatException if <code>s</code> cannot be parsed as a
- * <code>long</code>
- * @see #Long(String)
- * @see #parseLong(String)
- */
- public static Long valueOf(String s)
- {
- return new Long(parseLong(s, 10, false));
- }
-
- /**
- * Convert the specified <code>String</code> into a <code>Long</code>.
- * The <code>String</code> may represent decimal, hexadecimal, or
- * octal numbers.
- *
- * <p>The extended BNF grammar is as follows:<br>
- * <pre>
- * <em>DecodableString</em>:
- * ( [ <code>-</code> ] <em>DecimalNumber</em> )
- * | ( [ <code>-</code> ] ( <code>0x</code> | <code>0X</code>
- * | <code>#</code> ) <em>HexDigit</em> { <em>HexDigit</em> } )
- * | ( [ <code>-</code> ] <code>0</code> { <em>OctalDigit</em> } )
- * <em>DecimalNumber</em>:
- * <em>DecimalDigit except '0'</em> { <em>DecimalDigit</em> }
- * <em>DecimalDigit</em>:
- * <em>Character.digit(d, 10) has value 0 to 9</em>
- * <em>OctalDigit</em>:
- * <em>Character.digit(d, 8) has value 0 to 7</em>
- * <em>DecimalDigit</em>:
- * <em>Character.digit(d, 16) has value 0 to 15</em>
- * </pre>
- * Finally, the value must be in the range <code>MIN_VALUE</code> to
- * <code>MAX_VALUE</code>, or an exception is thrown. Note that you cannot
- * use a trailing 'l' or 'L', unlike in Java source code.
- *
- * @param str the <code>String</code> to interpret
- * @return the value of the String as a <code>Long</code>
- * @throws NumberFormatException if <code>s</code> cannot be parsed as a
- * <code>long</code>
- * @throws NullPointerException if <code>s</code> is null
- * @since 1.2
- */
- public static Long decode(String str)
- {
- return new Long(parseLong(str, 10, true));
- }
-
- /**
- * Return the value of this <code>Long</code> as a <code>byte</code>.
- *
- * @return the byte value
- */
- public byte byteValue()
- {
- return (byte) value;
- }
-
- /**
- * Return the value of this <code>Long</code> as a <code>short</code>.
- *
- * @return the short value
- */
- public short shortValue()
- {
- return (short) value;
- }
-
- /**
- * Return the value of this <code>Long</code> as an <code>int</code>.
- *
- * @return the int value
- */
- public int intValue()
- {
- return (int) value;
- }
-
- /**
- * Return the value of this <code>Long</code>.
- *
- * @return the long value
- */
- public long longValue()
- {
- return value;
- }
-
- /**
- * Return the value of this <code>Long</code> as a <code>float</code>.
- *
- * @return the float value
- */
- public float floatValue()
- {
- return value;
- }
-
- /**
- * Return the value of this <code>Long</code> as a <code>double</code>.
- *
- * @return the double value
- */
- public double doubleValue()
- {
- return value;
- }
-
- /**
- * Converts the <code>Long</code> value to a <code>String</code> and
- * assumes a radix of 10.
- *
- * @return the <code>String</code> representation
- */
- public String toString()
- {
- return toString(value, 10);
- }
-
- /**
- * Return a hashcode representing this Object. <code>Long</code>'s hash
- * code is calculated by <code>(int) (value ^ (value &gt;&gt; 32))</code>.
- *
- * @return this Object's hash code
- */
- public int hashCode()
- {
- return (int) (value ^ (value >>> 32));
- }
-
- /**
- * Returns <code>true</code> if <code>obj</code> is an instance of
- * <code>Long</code> and represents the same long value.
- *
- * @param obj the object to compare
- * @return whether these Objects are semantically equal
- */
- public boolean equals(Object obj)
- {
- return obj instanceof Long && value == ((Long) obj).value;
- }
-
- /**
- * Get the specified system property as a <code>Long</code>. The
- * <code>decode()</code> method will be used to interpret the value of
- * the property.
- *
- * @param nm the name of the system property
- * @return the system property as a <code>Long</code>, or null if the
- * property is not found or cannot be decoded
- * @throws SecurityException if accessing the system property is forbidden
- * @see System#getProperty(String)
- * @see #decode(String)
- */
- public static Long getLong(String nm)
- {
- return getLong(nm, null);
- }
-
- /**
- * Get the specified system property as a <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
- * @return the value of the system property, or the default
- * @throws SecurityException if accessing the system property is forbidden
- * @see System#getProperty(String)
- * @see #decode(String)
- */
- 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 a <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 def the default value
- * @return the value of the system property, or the default
- * @throws SecurityException if accessing the system property is forbidden
- * @see System#getProperty(String)
- * @see #decode(String)
- */
- public static Long getLong(String nm, Long def)
- {
- if (nm == null || "".equals(nm))
- return def;
- nm = System.getProperty(nm);
- if (nm == null)
- return def;
- try
- {
- return decode(nm);
- }
- catch (NumberFormatException e)
- {
- return def;
- }
- }
-
- /**
- * Compare two Longs numerically by comparing their <code>long</code>
- * values. The result is positive if the first is greater, negative if the
- * second is greater, and 0 if the two are equal.
- *
- * @param l the Long to compare
- * @return the comparison
- * @since 1.2
- */
- public int compareTo(Long l)
- {
- if (value == l.value)
- return 0;
- // Returns just -1 or 1 on inequality; doing math might overflow the long.
- return value > l.value ? 1 : -1;
- }
-
- /**
- * Behaves like <code>compareTo(Long)</code> unless the Object
- * is not a <code>Long</code>.
- *
- * @param o the object to compare
- * @return the comparison
- * @throws ClassCastException if the argument is not a <code>Long</code>
- * @see #compareTo(Long)
- * @see Comparable
- * @since 1.2
- */
- public int compareTo(Object o)
- {
- return compareTo((Long) o);
- }
-
- /**
- * Helper for converting unsigned numbers to String.
- *
- * @param num the number
- * @param exp log2(digit) (ie. 1, 3, or 4 for binary, oct, hex)
- */
- private static String toUnsignedString(long num, int exp)
- {
- // Use the Integer toUnsignedString for efficiency if possible.
- // If NUM<0 then this particular optimization doesn't work
- // properly.
- if (num >= 0 && (int) num == num)
- return Integer.toUnsignedString((int) num, exp);
-
- // Use an array large enough for a binary number.
- int mask = (1 << exp) - 1;
- char[] buffer = new char[64];
- int i = 64;
- do
- {
- buffer[--i] = digits[(int) num & mask];
- num >>>= exp;
- }
- while (num != 0);
-
- // Package constructor avoids an array copy.
- return new String(buffer, i, 64 - i, true);
- }
-
- /**
- * Helper for parsing longs.
- *
- * @param str the string to parse
- * @param radix the radix to use, must be 10 if decode is true
- * @param decode if called from decode
- * @return the parsed long value
- * @throws NumberFormatException if there is an error
- * @throws NullPointerException if decode is true and str is null
- * @see #parseLong(String, int)
- * @see #decode(String)
- */
- private static long parseLong(String str, int radix, boolean decode)
- {
- if (! decode && str == null)
- throw new NumberFormatException();
- int index = 0;
- int len = str.length();
- boolean isNeg = false;
- if (len == 0)
- throw new NumberFormatException();
- int ch = str.charAt(index);
- if (ch == '-')
- {
- if (len == 1)
- throw new NumberFormatException();
- isNeg = true;
- ch = str.charAt(++index);
- }
- if (decode)
- {
- if (ch == '0')
- {
- if (++index == len)
- return 0;
- if ((str.charAt(index) & ~('x' ^ 'X')) == 'X')
- {
- radix = 16;
- index++;
- }
- else
- radix = 8;
- }
- else if (ch == '#')
- {
- radix = 16;
- index++;
- }
- }
- if (index == len)
- throw new NumberFormatException();
-
- 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;
-
- long val = 0;
- while (index < len)
- {
- if (val < 0 || val > max)
- throw new NumberFormatException();
-
- ch = Character.digit(str.charAt(index++), radix);
- val = val * radix + ch;
- if (ch < 0 || (val < 0 && (! isNeg || val != MIN_VALUE)))
- throw new NumberFormatException();
- }
- return isNeg ? -val : val;
- }
-}