/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.jnasm.assembler;
import java.lang.reflect.Field;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;
/**
* @author Levente S\u00e1ntha (lsantha@users.sourceforge.net)
*/
public class InstructionUtils {
private static final String INSTRUCTION_ID_SUFFIX = "_ISN";
public static String[] getMnemonicArray(Map<String, Integer> map) {
final String[] mnemonics = new String[map.size()];
for (Map.Entry<String, Integer> entry : map.entrySet()) {
mnemonics[entry.getValue()] = entry.getKey();
}
return mnemonics;
}
public static Map<String, Integer> getInstructionMap(Class<?> clazz) {
final Map<String, Integer> map = new HashMap<String, Integer>();
try {
final Field[] fields = clazz.getDeclaredFields();
for (int i = fields.length; i-- > 0;) {
Field f = fields[i];
String fn = f.getName();
if (fn.endsWith(INSTRUCTION_ID_SUFFIX)) {
String mnemo = fn.substring(0, fn.length() - INSTRUCTION_ID_SUFFIX.length()).trim();
if (mnemo.length() > 0) {
map.put(mnemo.toLowerCase(), f.getInt(null));
}
}
}
} catch (IllegalAccessException iae) {
iae.printStackTrace();
System.exit(-1);
}
return Collections.unmodifiableMap(map);
}
}