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-/* java.lang.Character -- Wrapper class for char, and Unicode subsets
- Copyright (C) 1998, 1999, 2001, 2002, 2007 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. */
-
-#include <config.h>
-
-#include <gcj/cni.h>
-#include <jvm.h>
-#include <java/lang/Character.h>
-
-#include <java-chartables.h>
-
-
-
-// These constants define the return values for characters that are unassigned
-// or reserved for private use.
-#define UNASSIGNED_TYPE 0
-#define UNASSIGNED_DIGIT -1
-#define UNASSIGNED_DIRECTION -1
-#define UNASSIGNED_NUMERIC_VALUE -1
-
-#define PRIVATE_TYPE 18
-#define PRIVATE_DIRECTION 0
-
-// The methods that take a char as an argument all have counterparts that
-// take ints. The ones that take chars only work for the BMP or plane 0 of the
-// Unicode standard but the ones that take ints work for all Unicode code
-// points. However, the ones that take chars don't simply redirect the calls
-// because the BMP is by far the most used plane so saving a little time on
-// each call makes sense.
-
-jchar
-java::lang::Character::readChar(jchar ch)
-{
- // Perform 16-bit addition to find the correct entry in data.
- return data[0][(jchar) (blocks[0][ch >> shift[0]] + ch)];
-}
-
-jchar
-java::lang::Character::readCodePoint(jint codePoint)
-{
- jint plane = codePoint >> 16;
- jchar offset = (jchar)(codePoint & 0xffff);
- // Be careful not to call this method with an unassigned character. The only
- // characters assigned as of Unicode 4.0.0 belong to planes 0, 1, 2, and 14.
- return data[plane][(jchar) (blocks[plane][offset >> shift[plane]] + offset)];
-}
-
-jint
-java::lang::Character::getType(jchar ch)
-{
- // Perform 16-bit addition to find the correct entry in data.
- return (jint) (data[0][(jchar) (blocks[0][ch >> shift[0]] + ch)] & TYPE_MASK);
-}
-
-jint
-java::lang::Character::getType(jint codePoint)
-{
- jint plane = codePoint >> 16;
- if (plane < 0 || (plane > 2 && plane != 14))
- {
- if (plane > 14 && ((codePoint & 0xffff) < 0xfffe))
- return (jint) PRIVATE_TYPE;
- return (jint) UNASSIGNED_TYPE;
- }
- jint offset = codePoint & 0xffff;
- return (jint)
- (data[plane]
- [(jchar) (blocks[plane][offset >> shift[plane]] + offset)] & TYPE_MASK);
-}
-
-jchar
-java::lang::Character::toLowerCase(jchar ch)
-{
- return (jchar) (ch + lower[0][readChar(ch) >> 7]);
-}
-
-jint
-java::lang::Character::toLowerCase(jint codePoint)
-{
- jint plane = codePoint >> 16;
- if (plane < 0 || (plane > 2 && plane != 14))
- return codePoint;
- return (lower[plane][readCodePoint(codePoint) >> 7]) + codePoint;
-}
-
-jchar
-java::lang::Character::toUpperCase(jchar ch)
-{
- return (jchar) (ch + upper[0][readChar(ch) >> 7]);
-}
-
-jint
-java::lang::Character::toUpperCase(jint codePoint)
-{
- jint plane = codePoint >> 16;
- if (plane < 0 || (plane > 2 && plane != 14))
- return codePoint;
- return (upper[plane][readCodePoint(codePoint) >> 7]) + codePoint;
-}
-
-jchar
-java::lang::Character::toTitleCase(jchar ch)
-{
- // As title is short, it doesn't hurt to exhaustively iterate over it.
- for (int i = title_length - 2; i >= 0; i -= 2)
- if (title[i] == ch)
- return title[i + 1];
- return toUpperCase(ch);
-}
-
-jint
-java::lang::Character::toTitleCase(jint codePoint)
-{
- // As of Unicode 4.0.0 no characters outside of plane 0 have titlecase
- // mappings that are different from their uppercase mapping.
- if (codePoint >= 0 && codePoint < 0x10000)
- return toTitleCase((jchar)codePoint);
- return toUpperCase(codePoint);
-}
-
-jint
-java::lang::Character::digit(jchar ch, jint radix)
-{
- if (radix < MIN_RADIX || radix > MAX_RADIX)
- return (jint) -1;
- jchar attr = readChar(ch);
- if (((1 << (attr & TYPE_MASK))
- & ((1 << UPPERCASE_LETTER)
- | (1 << LOWERCASE_LETTER)
- | (1 << DECIMAL_DIGIT_NUMBER))))
- {
- // Signedness doesn't matter; 0xffff vs. -1 are both rejected.
- jint digit = (jint) numValue[0][attr >> 7];
- return (digit >= 0 && digit < radix) ? digit : (jint) -1;
- }
- return (jint) -1;
-}
-
-jint
-java::lang::Character::digit(jint codePoint, jint radix)
-{
- if (radix < MIN_RADIX || radix > MAX_RADIX)
- return (jint) -1;
-
- jint plane = codePoint >> 16;
- if (plane < 0 || (plane > 2 && plane != 14))
- return UNASSIGNED_DIGIT;
-
- jchar attr = readCodePoint(codePoint);
- if (((1 << (attr & TYPE_MASK))
- & ((1 << UPPERCASE_LETTER)
- | (1 << LOWERCASE_LETTER)
- | (1 << DECIMAL_DIGIT_NUMBER))))
- {
- // Signedness doesn't matter; 0xffff vs. -1 are both rejected.
- jint digit = (jint) numValue[plane][attr >> 7];
- if (digit <= -3)
- digit = largenums[-digit -3];
- return (digit >= 0 && digit < radix) ? digit : (jint) -1;
- }
- return (jint) -1;
-
-}
-
-jint
-java::lang::Character::getNumericValue(jchar ch)
-{
- // numValue is stored as an array of jshort, since 10000 is the maximum.
- return (jint) numValue[0][readChar(ch) >> 7];
-}
-
-jint
-java::lang::Character::getNumericValue(jint codePoint)
-{
- jint plane = codePoint >> 16;
- if (plane < 0 || (plane > 2 && plane != 14))
- return UNASSIGNED_NUMERIC_VALUE;
- jshort num = numValue[plane][readCodePoint(codePoint) >> 7];
- if (num <= -3)
- return largenums[-num - 3];
- return num;
-}
-
-jbyte
-java::lang::Character::getDirectionality(jchar ch)
-{
- return direction[0][readChar(ch) >> 7];
-}
-
-jbyte
-java::lang::Character::getDirectionality(jint codePoint)
-{
- jint plane = codePoint >> 16;
- if (plane < 0 || (plane > 2 && plane != 14))
- {
- if (plane > 14 && ((codePoint & 0xffff) < 0xfffe))
- return (jint) PRIVATE_DIRECTION;
- return (jint) UNASSIGNED_DIRECTION;
- }
- return direction[plane][readCodePoint(codePoint) >> 7];
-}