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Common Lisp implementation running on the JVM
/*
* CharacterFunctions.java
*
* Copyright (C) 2003-2006 Peter Graves
* $Id: CharacterFunctions.java 13461 2011-08-11 17:01:41Z ehuelsmann $
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* 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 org.armedbear.lisp;
import static org.armedbear.lisp.Lisp.*;
public final class CharacterFunctions
{
// ### char=
private static final Primitive CHAR_EQUALS =
new Primitive("char=", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
return LispCharacter.getValue(first) == LispCharacter.getValue(second) ? T : NIL;
}
@Override
public LispObject execute(LispObject[] array)
{
final int length = array.length;
final char c0 = LispCharacter.getValue(array[0]);
for (int i = 1; i < length; i++) {
if (c0 != LispCharacter.getValue(array[i]))
return NIL;
}
return T;
}
};
// ### char-equal
private static final Primitive CHAR_EQUAL =
new Primitive("char-equal", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
final char c1, c2;
c1 = LispCharacter.getValue(first);
c2 = LispCharacter.getValue(second);
if (c1 == c2)
return T;
if (LispCharacter.toUpperCase(c1) == LispCharacter.toUpperCase(c2))
return T;
if (LispCharacter.toLowerCase(c1) == LispCharacter.toLowerCase(c2))
return T;
return NIL;
}
@Override
public LispObject execute(LispObject[] array)
{
final int length = array.length;
final char c0 = LispCharacter.getValue(array[0]);
for (int i = 1; i < length; i++) {
char c = LispCharacter.getValue(array[i]);
if (c0 == c)
continue;
if (LispCharacter.toUpperCase(c0) == LispCharacter.toUpperCase(c))
continue;
if (LispCharacter.toLowerCase(c0) == LispCharacter.toLowerCase(c))
continue;
return NIL;
}
return T;
}
};
// ### char-greaterp
private static final Primitive CHAR_GREATERP =
new Primitive("char-greaterp", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
char c1 = LispCharacter.toUpperCase(LispCharacter.getValue(first));
char c2 = LispCharacter.toUpperCase(LispCharacter.getValue(second));
return c1 > c2 ? T : NIL;
}
@Override
public LispObject execute(LispObject[] array)
{
final int length = array.length;
char[] chars = new char[length];
for (int i = 0; i < length; i++)
chars[i] = LispCharacter.toUpperCase(LispCharacter.getValue(array[i]));
for (int i = 1; i < length; i++) {
if (chars[i-1] <= chars[i])
return NIL;
}
return T;
}
};
// ### char-not-greaterp
private static final Primitive CHAR_NOT_GREATERP =
new Primitive("char-not-greaterp", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
char c1 = LispCharacter.toUpperCase(LispCharacter.getValue(first));
char c2 = LispCharacter.toUpperCase(LispCharacter.getValue(second));
return c1 <= c2 ? T : NIL;
}
@Override
public LispObject execute(LispObject[] array)
{
final int length = array.length;
char[] chars = new char[length];
for (int i = 0; i < length; i++)
chars[i] = LispCharacter.toUpperCase(LispCharacter.getValue(array[i]));
for (int i = 1; i < length; i++) {
if (chars[i] < chars[i-1])
return NIL;
}
return T;
}
};
// ### char<
private static final Primitive CHAR_LESS_THAN =
new Primitive("char<", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
return LispCharacter.getValue(first) < LispCharacter.getValue(second) ? T : NIL;
}
@Override
public LispObject execute(LispObject[] args)
{
final int length = args.length;
char[] chars = new char[length];
for (int i = 0; i < length; i++) {
chars[i] = LispCharacter.getValue(args[i]);
}
for (int i = 1; i < length; i++) {
if (chars[i-1] >= chars[i])
return NIL;
}
return T;
}
};
// ### char<=
private static final Primitive CHAR_LE =
new Primitive("char<=", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
return LispCharacter.getValue(first) <= LispCharacter.getValue(second) ? T : NIL;
}
@Override
public LispObject execute(LispObject first, LispObject second,
LispObject third)
{
if (LispCharacter.getValue(first) > LispCharacter.getValue(second))
return NIL;
if (LispCharacter.getValue(second) > LispCharacter.getValue(third))
return NIL;
return T;
}
@Override
public LispObject execute(LispObject[] args)
{
final int length = args.length;
char[] chars = new char[length];
for (int i = 0; i < length; i++) {
chars[i] = LispCharacter.getValue(args[i]);
}
for (int i = 1; i < length; i++) {
if (chars[i-1] > chars[i])
return NIL;
}
return T;
}
};
// ### char-lessp
private static final Primitive CHAR_LESSP =
new Primitive("char-lessp", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
char c1 = LispCharacter.toUpperCase(LispCharacter.getValue(first));
char c2 = LispCharacter.toUpperCase(LispCharacter.getValue(second));
return c1 < c2 ? T : NIL;
}
@Override
public LispObject execute(LispObject[] array)
{
final int length = array.length;
char[] chars = new char[length];
for (int i = 0; i < length; i++)
chars[i] = LispCharacter.toUpperCase(LispCharacter.getValue(array[i]));
for (int i = 1; i < length; i++) {
if (chars[i-1] >= chars[i])
return NIL;
}
return T;
}
};
// ### char-not-lessp
private static final Primitive CHAR_NOT_LESSP =
new Primitive("char-not-lessp", "&rest characters")
{
@Override
public LispObject execute()
{
return error(new WrongNumberOfArgumentsException(this, 1, -1));
}
@Override
public LispObject execute(LispObject arg)
{
if (arg instanceof LispCharacter)
return T;
return type_error(arg, Symbol.CHARACTER);
}
@Override
public LispObject execute(LispObject first, LispObject second)
{
char c1 = LispCharacter.toUpperCase(LispCharacter.getValue(first));
char c2 = LispCharacter.toUpperCase(LispCharacter.getValue(second));
return c1 >= c2 ? T : NIL;
}
@Override
public LispObject execute(LispObject[] array)
{
final int length = array.length;
char[] chars = new char[length];
for (int i = 0; i < length; i++)
chars[i] = LispCharacter.toUpperCase(LispCharacter.getValue(array[i]));
for (int i = 1; i < length; i++) {
if (chars[i] > chars[i-1])
return NIL;
}
return T;
}
};
}