1 package edu.berkeley.sbp.misc;
2 import edu.berkeley.sbp.*;
3 import edu.berkeley.sbp.util.*;
5 public class CharTopology extends IntegerTopology<Character> implements Functor<Character,Integer> {
7 public CharTopology() { super(null); }
8 public CharTopology(Range.Set r) { super(null, r); }
9 public CharTopology(char a, char b) { super(null, a, b); }
11 public Integer invoke(Character c) { return (int)c.charValue(); }
13 public String toString() {
14 StringBuffer sb = new StringBuffer();
16 Range.Set ranges = getRanges();
17 if (ranges.size() == -1 || ranges.size() > Character.MAX_VALUE/2) {
19 ranges = ranges.complement();
21 ranges = ranges.intersect(new Range.Set(new Range(0, Character.MAX_VALUE)));
22 for(Range r : ranges) {
23 if (r.isMinNegInf() || r.isMaxPosInf()) throw new Error("should not happen");
24 if (r.getMin()==r.getMax()) {
25 sb.append(esc((char)r.getMin()));
27 sb.append(esc((char)r.getMin()));
29 sb.append(esc((char)r.getMax()));
36 private String esc(char c) { return StringUtil.escapify(c+"", "[]-~\\\"\'"); }