1 // Copyright 2006 all rights reserved; see LICENSE file for BSD-style license
3 package edu.berkeley.sbp.chr;
4 import edu.berkeley.sbp.*;
5 import edu.berkeley.sbp.misc.*;
6 import edu.berkeley.sbp.util.*;
8 public class CharTopology extends IntegerTopology<Character> implements Functor<Character,Integer> {
10 public CharTopology() { super(null); }
11 public CharTopology(Range.Set r) { super(null, r); }
12 public CharTopology(Topology<Character> it) { this(((IntegerTopology<Character>)it.unwrap()).getRanges()); }
13 public CharTopology(char a, char b) { super(null, a, b); }
15 public Integer invoke(Character c) { return (int)c.charValue(); }
17 public String toString() {
18 StringBuffer sb = new StringBuffer();
19 Range.Set ranges = getRanges();
20 if (ranges.size() == -1 || ranges.size() > Character.MAX_VALUE/2) {
22 ranges = ranges.complement();
25 ranges = ranges.intersect(new Range.Set(new Range(0, Character.MAX_VALUE)));
26 for(Range r : ranges) {
27 if (r.isMinNegInf() || r.isMaxPosInf()) throw new Error("should not happen");
28 if (r.getMin()==r.getMax()) {
29 sb.append(esc((char)r.getMin()));
31 sb.append(esc((char)r.getMin()));
33 sb.append(esc((char)r.getMax()));
40 private String esc(char c) {
41 return StringUtil.escapify(c+"", "[]-~\\\"\'\n\r");