- public static Atom set(Range.Set r) { return new CharRange(new IntegerTopology<CharToken>(r)); }
-
- /** returns an element which exactly matches the string given */
- public static Element string(String s) {
- if (s.length() == 0) return Union.epsilon;
- final String escapified = "\""+StringUtil.escapify(s, "\"\r\n\\")+"\"";
- Element ret;
- if (s.length() == 1) {
- ret =
- new CharRange(new IntegerTopology<CharToken>((int)s.charAt(0))) {
- public String toString() { return escapified; } };
- } else {
- Union ret2 = new Union("\""+s+"\"_str", true) {
- public String toString() { return escapified; } };
- Element[] refs = new Element[s.length()];
- for(int i=0; i<refs.length; i++) refs[i] = new CharRange(new IntegerTopology<CharToken>((int)s.charAt(i)));
- ret2.add(Sequence.constant(refs, s, null, null));
- ret = ret2;
- }
- return ret;
- }
-
- /** FIXME */
- public static Topology<CharToken> top() { return new IntegerTopology<CharToken>(); }
- public static Topology<CharToken> top(String s) throws java.text.ParseException {
- return new IntegerTopology<CharToken>(Range.Set.parse(s));
- }