114 lines
3.5 KiB
C++
114 lines
3.5 KiB
C++
/* java.lang.Character -- Wrapper class for char, and Unicode subsets
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Copyright (C) 1998, 1999, 2001, 2002 Free Software Foundation, Inc.
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This file is part of GNU Classpath.
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GNU Classpath is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GNU Classpath is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Classpath; see the file COPYING. If not, write to the
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Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301 USA.
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Linking this library statically or dynamically with other modules is
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making a combined work based on this library. Thus, the terms and
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conditions of the GNU General Public License cover the whole
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combination.
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As a special exception, the copyright holders of this library give you
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permission to link this library with independent modules to produce an
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executable, regardless of the license terms of these independent
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modules, and to copy and distribute the resulting executable under
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terms of your choice, provided that you also meet, for each linked
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independent module, the terms and conditions of the license of that
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module. An independent module is a module which is not derived from
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or based on this library. If you modify this library, you may extend
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this exception to your version of the library, but you are not
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obligated to do so. If you do not wish to do so, delete this
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exception statement from your version. */
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#include <config.h>
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#include <gcj/cni.h>
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#include <jvm.h>
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#include <java/lang/Character.h>
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#include <java-chartables.h>
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jchar
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java::lang::Character::readChar(jchar ch)
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{
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// Perform 16-bit addition to find the correct entry in data.
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return data[(jchar) (blocks[ch >> SHIFT] + ch)];
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}
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jint
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java::lang::Character::getType(jchar ch)
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{
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// Perform 16-bit addition to find the correct entry in data.
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return (jint) (data[(jchar) (blocks[ch >> SHIFT] + ch)] & TYPE_MASK);
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}
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jchar
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java::lang::Character::toLowerCase(jchar ch)
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{
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return (jchar) (ch + lower[readChar(ch) >> 7]);
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}
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jchar
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java::lang::Character::toUpperCase(jchar ch)
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{
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return (jchar) (ch + upper[readChar(ch) >> 7]);
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}
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jchar
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java::lang::Character::toTitleCase(jchar ch)
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{
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// As title is short, it doesn't hurt to exhaustively iterate over it.
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for (int i = title_length - 2; i >= 0; i -= 2)
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if (title[i] == ch)
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return title[i + 1];
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return toUpperCase(ch);
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}
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jint
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java::lang::Character::digit(jchar ch, jint radix)
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{
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if (radix < MIN_RADIX || radix > MAX_RADIX)
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return (jint) -1;
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jchar attr = readChar(ch);
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if (((1 << (attr & TYPE_MASK))
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& ((1 << UPPERCASE_LETTER)
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| (1 << LOWERCASE_LETTER)
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| (1 << DECIMAL_DIGIT_NUMBER))))
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{
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// Signedness doesn't matter; 0xffff vs. -1 are both rejected.
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jint digit = (jint) numValue[attr >> 7];
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return (digit >= 0 && digit < radix) ? digit : (jint) -1;
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}
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return (jint) -1;
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}
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jint
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java::lang::Character::getNumericValue(jchar ch)
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{
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// numValue is stored as an array of jshort, since 10000 is the maximum.
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return (jint) numValue[readChar(ch) >> 7];
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}
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jbyte
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java::lang::Character::getDirectionality(jchar ch)
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{
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return direction[readChar(ch) >> 7];
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}
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