import java.util.Vector;

/**
 * Implementation of Program using a Vector for storage.
 * See Program interface for more information
 */
public class SamProgram implements Program, java.io.Serializable {
	/* Program Definition: A Sequence of valid SaM instructions, labels, and comments,
	   consisting of at least one instruction. */

	protected Vector Iarr = new Vector();
	protected SymbolTable syms = new SamSymbolTable();
	private static final String BR = System.getProperty("line.separator");

	/* Instructions */
	public Instruction getInst(int pos) 
		{ return (Instruction)Iarr.get(pos); }

	public void addInst(Instruction i) 
		{ Iarr.add(i); }

	public void addInst(Instruction[] arr) {
		for (int a = 0; a < arr.length; a++)
			Iarr.add(arr[a]);
	}

	public int getLength() { return Iarr.size(); }

	/* Symbolic Table */
	public SymbolTable getTable() 		{ return syms; }
	public void setTable(SymbolTable table) { syms = table; }

	/* Print everything */
	public String toString() {
		String toReturn = "Instructions: " + BR;
		for (int i = 0; i < Iarr.size(); i++)
			toReturn += (i) + ": " + Iarr.get(i).toString() + BR;
		toReturn += BR + "Symbol Table:" + BR + syms.toString();
		return toReturn;
	}
}