RegistersTableModel.java

package elw.dp.app;

import elw.dp.mips.Reg;
import elw.dp.mips.Registers;
import elw.dp.mips.asm.Data;

import javax.swing.table.AbstractTableModel;

public class RegistersTableModel extends AbstractTableModel {
    public static final String COL_NUMBER = "#";
    public static final String COL_NAME = "Name";
    public static final String COL_HEX = "Hex";
    public static final String COL_DEC = "Dec";
    public static final String COL_ACC = InstructionsTableModel.COL_ACC;

    private final String[] columns = new String[]{COL_ACC, COL_NUMBER, COL_NAME, COL_HEX, COL_DEC};
    private final Registers registers;

    public RegistersTableModel(Registers registers) {
        this.registers = registers;
    }

    public String getColumnName(int column) {
        return columns[column];
    }

    public int getColumnCount() {
        return columns.length;
    }

    public int getRowCount() {
        return registers.getSetupRegOrdinals().length;
    }

    public Object getValueAt(int rowIndex, int columnIndex) {
        final Reg reg = Reg.values()[registers.getSetupRegOrdinals()[rowIndex]];
        final String colName = columns[columnIndex];

        if (COL_NUMBER.equals(colName)) {
            return Data.str(reg.ordinal(), 2, 5);
        } else if (COL_NAME.equals(colName)) {
            return "$" + reg.toString();
        } else if (COL_HEX.equals(colName)) {
            return Data.str((long) registers.getRegInternal(reg) & 0xFFFFFFFFL, 16, 8);
        } else if (COL_DEC.equals(colName)) {
            return Data.str(registers.getRegInternal(reg), 10, 1);
        } else if (COL_ACC.equals(colName)) {
            return getAccessMod(reg);
        }

        return "";
    }

    private String getAccessMod(Reg rowIndex) {
        StringBuffer accessMod = new StringBuffer();

        if (registers.getReadRegs().contains(rowIndex.ordinal())) {
            accessMod.append("r");
        }

        if (registers.getWriteRegs().contains(rowIndex.ordinal())) {
            accessMod.append("w");
        }

        return accessMod.toString();
    }
}