/*
* Simbler - Where Assembly becomes easy. Interactive and very easy, Simbler is
* a great tool to help students and interested people to learn and simulate
* the basics of Assembly Language.
*
* Copyright (C) 2011 Guilherme de Oliveira Martins
* http://www.gmartins.com.br - guilherme@gmartins.com.br
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
package br.com.gmartins.simbler.mnemonics;
import br.com.gmartins.simbler.components.MainPanel;
import br.com.gmartins.simbler.cpu.ALU;
import br.com.gmartins.simbler.helpers.RegexMatcher;
import br.com.gmartins.simbler.instructions.Instruction;
import br.com.gmartins.simbler.instructions.value.Value;
import br.com.gmartins.simbler.mnemonics.helpers.Commands;
import br.com.gmartins.simbler.mnemonics.helpers.MnemonicsMap;
/**
*
* @author Guilherme
*/
public class DEC extends Commands {
public DEC(MainPanel main) {
super(main);
}
@Override
public void execute() {
String regex0 = MnemonicsMap.getInstance().getMnemonicsMap().get("DEC").getRegexList().get(0).getRegex(true);
String regex1 = MnemonicsMap.getInstance().getMnemonicsMap().get("DEC").getRegexList().get(1).getRegex(true);
// MATCHES INC @10, INC @100
// REGEX[0] - "INC @[0-9]{1,9}"
// MATCHES INC AX, INC DX
// REGEX[1] - "INC [ABCD]X"
if (RegexMatcher.matches(regex0, getCurrentInstruction().getLineCommand())) {
// Pega o comando na posição definida pelo numero após o @
Instruction dest = getInstructionAt(getCurrentInstruction().getValue().toInteger());
// Decrementa o valor em 1
Value value = ALU.sub(dest.getValue(), ALU.decimal(1));
// Substitui pelo novo valor
dest.replaceValue(value, this.getMainPanel().getDataTypeInput().getDataType());
} else if (RegexMatcher.matches(regex1, getCurrentInstruction().getLineCommand())) {
// Decrementa o valor em 1
Value value = ALU.sub(getCurrentInstruction().getRegister().getValue(), ALU.decimal(1));
// Atribui o novo valor ao registrador especificado
getCurrentInstruction().getRegister().setValue(value);
}
}
}