import edu.berkeley.sbp.*;
import edu.berkeley.sbp.util.*;
-/** a stream of tokens to be parsed */
+/** <font color=purple>a stream of <tt>Token</tt>s to be parsed</font> */
public interface Input<Token> {
/** returns the token just beyond the current location and advances beyond it */
/** returns the location the input stream is currently at */
public Location<Token> getLocation();
- /** a location <i>between tokens<i> in the input stream */
- public static interface Location<Tok> extends Comparable<Location> {
+ /** <font color=purple>a location (position) in the input stream -- <i>between tokens</i></font> */
+ public static interface Location<Token> extends Comparable<Location> {
+
+ /** return the region between this location and <tt>loc</tt> */
+ public Region<Token> createRegion(Location<Token> loc);
+
public String toString();
- public Region<Tok> createRegion(Location<Tok> loc);
}
- public static interface Region<Tok> /* implements Topology<Location<Tok>> */ { }
+ /** <font color=purple>a contiguous set of <tt>Location</tt>s</font> */
+ public static interface Region<Token> /* implements Topology<Location<Tok>> */ {
+ }
+
}