package com.thaiopensource.relaxng.pattern;
class Alphabet {
private NameClass nameClass;
boolean isEmpty() {
return nameClass == null;
}
void addElement(NameClass nc) {
if (nameClass == null)
nameClass = nc;
else if (nc != null)
nameClass = new ChoiceNameClass(nameClass, nc);
}
void addAlphabet(Alphabet a) {
addElement(a.nameClass);
}
void checkOverlap(Alphabet a) throws RestrictionViolationException {
if (nameClass != null && a.nameClass != null)
OverlapDetector.checkOverlap(nameClass, a.nameClass,
"interleave_element_overlap_name",
"interleave_element_overlap_ns",
"interleave_element_overlap");
}
}