+
+ public Integer invoke(Character c) { return (int)c.charValue(); }
+
+ public String toString() {
+ StringBuffer sb = new StringBuffer();
+ sb.append('[');
+ Range.Set ranges = getRanges();
+ if (ranges.size() == -1 || ranges.size() > Character.MAX_VALUE/2) {
+ sb.append('~');
+ ranges = ranges.complement();
+ }
+ ranges = ranges.intersect(new Range.Set(new Range(0, Character.MAX_VALUE)));
+ for(Range r : ranges) {
+ if (r.isMinNegInf() || r.isMaxPosInf()) throw new Error("should not happen");
+ if (r.getMin()==r.getMax()) {
+ sb.append(esc((char)r.getMin()));
+ } else{
+ sb.append(esc((char)r.getMin()));
+ sb.append('-');
+ sb.append(esc((char)r.getMax()));
+ }
+ }
+ sb.append(']');
+ return sb.toString();
+ }
+
+ private String esc(char c) { return StringUtil.escapify(c+"", "[]-~\\\"\'"); }
+