BaseRegisterProvider.java

/*
  BaseRegisterProvider.java

  (c) 2011-2013 Edward Swartz

  All rights reserved. This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v1.0
  which accompanies this distribution, and is available at
  http://www.eclipse.org/legal/epl-v10.html
 */
package v9t9.gui.client.swt.shells.debugger;

import java.util.ArrayList;

import ejs.base.utils.HexUtils;


import v9t9.common.machine.IMachine;
import v9t9.common.machine.IRegisterAccess;
import v9t9.common.machine.IRegisterAccess.RegisterInfo;

/**
 * @author ejs
 *
 */
public abstract class BaseRegisterProvider implements IRegisterProvider {

	private static final IRegister[] NO_REGS = new IRegister[0];
	protected final IMachine machine;
	private ArrayList<IRegister> regList;
	protected final IRegisterAccess access;

	class Register implements IRegister {
		private final int reg;
		private RegisterInfo info;

		public Register(int reg) {
			this.reg = reg;
			this.info = access.getRegisterInfo(reg);
		}

		@Override
		public String toString() {
			return HexUtils.toHex4(getValue());
		}

		/* (non-Javadoc)
		 * @see v9t9.gui.client.swt.debugger.IRegister#getInfo()
		 */
		@Override
		public RegisterInfo getInfo() {
			return info;
		}
		
		/* (non-Javadoc)
		 * @see v9t9.emulator.clients.builtin.swt.debugger.IRegister#getValue()
		 */
		@Override
		public int getValue() {
			return access.getRegister(reg);
		}

		/* (non-Javadoc)
		 * @see v9t9.emulator.clients.builtin.swt.debugger.IRegister#setValue(int)
		 */
		@Override
		public void setValue(int value) {
			access.setRegister(reg, value);
		}
		
		/* (non-Javadoc)
		 * @see v9t9.emulator.clients.builtin.swt.debugger.IRegister#getTooltip()
		 */
		@Override
		public String getTooltip() {
			return access.getRegisterTooltip(reg);
		}
	}
	
	/**
	 * @param machine
	 */
	public BaseRegisterProvider(IMachine machine, IRegisterAccess access) {
		this.machine = machine;
		this.access = access;
		int cnt = access.getRegisterCount();
		regList = new ArrayList<IRegister>();
		for (int i = access.getFirstRegister(); cnt-- > 0; i++) {
			regList.add(new Register(i));
		}
	}

	/* (non-Javadoc)
	 * @see v9t9.emulator.clients.builtin.swt.debugger.IRegisterProvider#getLabel()
	 */
	@Override
	public String getLabel() {
		return access.getGroupName();
	}

	/* (non-Javadoc)
	 * @see v9t9.emulator.clients.builtin.swt.debugger.IRegisterProvider#getRegisterCount()
	 */
	@Override
	public int getRegisterCount() {
		return regList.size();
	}
	
	/* (non-Javadoc)
	 * @see v9t9.emulator.clients.builtin.swt.debugger.IRegisterProvider#getRegisters()
	 */
	@Override
	public IRegister[] getRegisters(int start, int count) {
		return regList.subList(start, start + count).toArray(NO_REGS);
	}

}