package rpn;

public class StringInput extends Input {
	String s;
	public StringInput(String s) {
		this.s = s;
		start = 0;
		mark = 0;
		eoi = s.length();
	}
	
	public char nextChar(int i) {
		return(s.charAt(i));
	}
	
	public int peek(int n) {
		if (start + n < eoi) {
			return(s.charAt(start + n));
		} else {
			return(255);
		}
	}
	
}