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Diffstat (limited to 'libjava/classpath/java/nio/charset/CoderResult.java')
-rw-r--r-- | libjava/classpath/java/nio/charset/CoderResult.java | 189 |
1 files changed, 0 insertions, 189 deletions
diff --git a/libjava/classpath/java/nio/charset/CoderResult.java b/libjava/classpath/java/nio/charset/CoderResult.java deleted file mode 100644 index b083d84..0000000 --- a/libjava/classpath/java/nio/charset/CoderResult.java +++ /dev/null @@ -1,189 +0,0 @@ -/* CoderResult.java -- - Copyright (C) 2002, 2004 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.nio.charset; - -import java.lang.ref.WeakReference; -import java.nio.BufferOverflowException; -import java.nio.BufferUnderflowException; -import java.util.HashMap; - -/** - * @author Jesse Rosenstock - * @since 1.4 - */ -public class CoderResult -{ - private static final int TYPE_MALFORMED = 0; - private static final int TYPE_OVERFLOW = 1; - private static final int TYPE_UNDERFLOW = 2; - private static final int TYPE_UNMAPPABLE = 3; - - public static final CoderResult OVERFLOW - = new CoderResult (TYPE_OVERFLOW, 0); - public static final CoderResult UNDERFLOW - = new CoderResult (TYPE_UNDERFLOW, 0); - - private static final String[] names - = { "MALFORMED", "OVERFLOW", "UNDERFLOW", "UNMAPPABLE" }; - - private static final Cache malformedCache - = new Cache () - { - protected CoderResult make (int length) - { - return new CoderResult (TYPE_MALFORMED, length); - } - }; - - private static final Cache unmappableCache - = new Cache () - { - protected CoderResult make (int length) - { - return new CoderResult (TYPE_UNMAPPABLE, length); - } - }; - - private final int type; - private final int length; - - // Package-private to avoid a trampoline constructor. - CoderResult (int type, int length) - { - this.type = type; - this.length = length; - } - - public boolean isError () - { - return length > 0; - } - - public boolean isMalformed () - { - return type == TYPE_MALFORMED; - } - - public boolean isOverflow () - { - return type == TYPE_OVERFLOW; - } - - public boolean isUnderflow () - { - return type == TYPE_UNDERFLOW; - } - - public boolean isUnmappable () - { - return type == TYPE_UNMAPPABLE; - } - - public int length () - { - if (length <= 0) - throw new UnsupportedOperationException (); - else - return length; - } - - public static CoderResult malformedForLength (int length) - { - return malformedCache.get (length); - } - - public void throwException () - throws CharacterCodingException - { - switch (type) - { - case TYPE_MALFORMED: - throw new MalformedInputException (length); - case TYPE_OVERFLOW: - throw new BufferOverflowException (); - case TYPE_UNDERFLOW: - throw new BufferUnderflowException (); - case TYPE_UNMAPPABLE: - throw new UnmappableCharacterException (length); - } - } - - public String toString () - { - String name = names[type]; - return (length > 0) ? name + '[' + length + ']' : name; - } - - public static CoderResult unmappableForLength (int length) - { - return unmappableCache.get (length); - } - - private abstract static class Cache - { - private final HashMap cache; - - // Package-private to avoid a trampoline constructor. - Cache () - { - cache = new HashMap (); - } - - // Package-private to avoid a trampoline. - synchronized CoderResult get (int length) - { - if (length <= 0) - throw new IllegalArgumentException ("Non-positive length"); - - Integer len = Integer.valueOf (length); - CoderResult cr = null; - Object o; - if ((o = cache.get (len)) != null) - cr = (CoderResult) ((WeakReference) o).get (); - if (cr == null) - { - cr = make (length); - cache.put (len, new WeakReference (cr)); - } - - return cr; - } - - protected abstract CoderResult make (int length); - } -} |