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1 files changed, 383 insertions, 0 deletions

diff --git a/libjava/classpath/java/lang/Short.java b/libjava/classpath/java/lang/Short.java
new file mode 100644
index 000000000..ec87f933e
--- /dev/null
+++ b/libjava/classpath/java/lang/Short.java
@@ -0,0 +1,383 @@
+/* Short.java -- object wrapper for short
+   Copyright (C) 1998, 2001, 2002, 2004, 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>Short</code> represent primitive
+ * <code>short</code> values.
+ *
+ * Additionally, this class provides various helper functions and variables
+ * related to shorts.
+ *
+ * @author Paul Fisher
+ * @author John Keiser
+ * @author Eric Blake (ebb9@email.byu.edu)
+ * @author Tom Tromey (tromey@redhat.com)
+ * @author Andrew John Hughes (gnu_andrew@member.fsf.org)
+ * @since 1.1
+ * @status updated to 1.5
+ */
+public final class Short extends Number implements Comparable<Short>
+{
+  /**
+   * Compatible with JDK 1.1+.
+   */
+  private static final long serialVersionUID = 7515723908773894738L;
+
+  /**
+   * The minimum value a <code>short</code> can represent is -32768 (or
+   * -2<sup>15</sup>).
+   */
+  public static final short MIN_VALUE = -32768;
+
+  /**
+   * The minimum value a <code>short</code> can represent is 32767 (or
+   * 2<sup>15</sup>).
+   */
+  public static final short MAX_VALUE = 32767;
+
+  /**
+   * The primitive type <code>short</code> is represented by this
+   * <code>Class</code> object.
+   */
+  public static final Class<Short> TYPE = (Class<Short>) VMClassLoader.getPrimitiveClass('S');
+
+  /**
+   * The number of bits needed to represent a <code>short</code>.
+   * @since 1.5
+   */
+  public static final int SIZE = 16;
+
+  // This caches some Short values, and is used by boxing conversions
+  // via valueOf().  We must cache at least -128..127; these constants
+  // control how much we actually cache.
+  private static final int MIN_CACHE = -128;
+  private static final int MAX_CACHE = 127;
+  private static Short[] shortCache = new Short[MAX_CACHE - MIN_CACHE + 1];
+  static
+  {
+    for (short i=MIN_CACHE; i <= MAX_CACHE; i++)
+      shortCache[i - MIN_CACHE] = new Short(i);
+  }
+
+  /**
+   * The immutable value of this Short.
+   *
+   * @serial the wrapped short
+   */
+  private final short value;
+
+  /**
+   * Create a <code>Short</code> object representing the value of the
+   * <code>short</code> argument.
+   *
+   * @param value the value to use
+   */
+  public Short(short value)
+  {
+    this.value = value;
+  }
+
+  /**
+   * Create a <code>Short</code> object representing the value of the
+   * argument after conversion to a <code>short</code>.
+   *
+   * @param s the string to convert
+   * @throws NumberFormatException if the String cannot be parsed
+   */
+  public Short(String s)
+  {
+    value = parseShort(s, 10);
+  }
+
+  /**
+   * Converts the <code>short</code> to a <code>String</code> and assumes
+   * a radix of 10.
+   *
+   * @param s the <code>short</code> to convert to <code>String</code>
+   * @return the <code>String</code> representation of the argument
+   */
+  public static String toString(short s)
+  {
+    return String.valueOf(s);
+  }
+
+  /**
+   * Converts the specified <code>String</code> into a <code>short</code>.
+   * This function assumes a radix of 10.
+   *
+   * @param s the <code>String</code> to convert
+   * @return the <code>short</code> value of <code>s</code>
+   * @throws NumberFormatException if <code>s</code> cannot be parsed as a
+   *         <code>short</code>
+   */
+  public static short parseShort(String s)
+  {
+    return parseShort(s, 10);
+  }
+
+  /**
+   * Converts the specified <code>String</code> into a <code>short</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 '+'.
+   *
+   * @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>short</code>
+   * @throws NumberFormatException if <code>s</code> cannot be parsed as a
+   *         <code>short</code>
+   */
+  public static short parseShort(String s, int radix)
+  {
+    int i = Integer.parseInt(s, radix, false);
+    if ((short) i != i)
+      throw new NumberFormatException();
+    return (short) i;
+  }
+
+  /**
+   * Creates a new <code>Short</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>Short</code>
+   * @throws NumberFormatException if <code>s</code> cannot be parsed as a
+   *         <code>short</code>
+   * @see #parseShort(String, int)
+   */
+  public static Short valueOf(String s, int radix)
+  {
+    return valueOf(parseShort(s, radix));
+  }
+
+  /**
+   * Creates a new <code>Short</code> object using the <code>String</code>,
+   * assuming a radix of 10.
+   *
+   * @param s the <code>String</code> to convert
+   * @return the new <code>Short</code>
+   * @throws NumberFormatException if <code>s</code> cannot be parsed as a
+   *         <code>short</code>
+   * @see #Short(String)
+   * @see #parseShort(String)
+   */
+  public static Short valueOf(String s)
+  {
+    return valueOf(parseShort(s, 10));
+  }
+
+  /**
+   * Returns a <code>Short</code> object wrapping the value.
+   * In contrast to the <code>Short</code> constructor, this method
+   * will cache some values.  It is used by boxing conversion.
+   *
+   * @param val the value to wrap
+   * @return the <code>Short</code>
+   * @since 1.5
+   */
+  public static Short valueOf(short val)
+  {
+    if (val < MIN_CACHE || val > MAX_CACHE)
+      return new Short(val);
+    else
+      return shortCache[val - MIN_CACHE];
+  }
+
+  /**
+   * Convert the specified <code>String</code> into a <code>Short</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.
+   *
+   * @param s the <code>String</code> to interpret
+   * @return the value of the String as a <code>Short</code>
+   * @throws NumberFormatException if <code>s</code> cannot be parsed as a
+   *         <code>short</code>
+   * @throws NullPointerException if <code>s</code> is null
+   * @see Integer#decode(String)
+   */
+  public static Short decode(String s)
+  {
+    int i = Integer.parseInt(s, 10, true);
+    if ((short) i != i)
+      throw new NumberFormatException();
+    return valueOf((short) i);
+  }
+
+  /**
+   * Return the value of this <code>Short</code> as a <code>byte</code>.
+   *
+   * @return the byte value
+   */
+  public byte byteValue()
+  {
+    return (byte) value;
+  }
+
+  /**
+   * Return the value of this <code>Short</code>.
+   *
+   * @return the short value
+   */
+  public short shortValue()
+  {
+    return value;
+  }
+
+  /**
+   * Return the value of this <code>Short</code> as an <code>int</code>.
+   *
+   * @return the int value
+   */
+  public int intValue()
+  {
+    return value;
+  }
+
+  /**
+   * Return the value of this <code>Short</code> as a <code>long</code>.
+   *
+   * @return the long value
+   */
+  public long longValue()
+  {
+    return value;
+  }
+
+  /**
+   * Return the value of this <code>Short</code> as a <code>float</code>.
+   *
+   * @return the float value
+   */
+  public float floatValue()
+  {
+    return value;
+  }
+
+  /**
+   * Return the value of this <code>Short</code> as a <code>double</code>.
+   *
+   * @return the double value
+   */
+  public double doubleValue()
+  {
+    return value;
+  }
+
+  /**
+   * Converts the <code>Short</code> value to a <code>String</code> and
+   * assumes a radix of 10.
+   *
+   * @return the <code>String</code> representation of this <code>Short</code>
+   */
+  public String toString()
+  {
+    return String.valueOf(value);
+  }
+
+  /**
+   * Return a hashcode representing this Object. <code>Short</code>'s hash
+   * code is simply its value.
+   *
+   * @return this Object's hash code
+   */
+  public int hashCode()
+  {
+    return value;
+  }
+
+  /**
+   * Returns <code>true</code> if <code>obj</code> is an instance of
+   * <code>Short</code> and represents the same short value.
+   *
+   * @param obj the object to compare
+   * @return whether these Objects are semantically equal
+   */
+  public boolean equals(Object obj)
+  {
+    return obj instanceof Short && value == ((Short) obj).value;
+  }
+
+  /**
+   * Compare two Shorts numerically by comparing their <code>short</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 s the Short to compare
+   * @return the comparison
+   * @since 1.2
+   */
+  public int compareTo(Short s)
+  {
+    return value - s.value;
+  }
+
+  /**
+   * Reverse the bytes in val.
+   * @since 1.5
+   */
+  public static short reverseBytes(short val)
+  {
+    return (short) (((val >> 8) & 0xff) | ((val << 8) & 0xff00));
+  }
+}