package com.thaiopensource.relaxng.pattern; class GroupPattern extends BinaryPattern { GroupPattern(Pattern p1, Pattern p2) { super(p1.isNullable() && p2.isNullable(), combineHashCode(GROUP_HASH_CODE, p1.hashCode(), p2.hashCode()), p1, p2); } Pattern expand(SchemaPatternBuilder b) { Pattern ep1 = p1.expand(b); Pattern ep2 = p2.expand(b); if (ep1 != p1 || ep2 != p2) return b.makeGroup(ep1, ep2); else return this; } void checkRestrictions(int context, DuplicateAttributeDetector dad, Alphabet alpha) throws RestrictionViolationException { switch (context) { case START_CONTEXT: throw new RestrictionViolationException("start_contains_group"); case DATA_EXCEPT_CONTEXT: throw new RestrictionViolationException("data_except_contains_group"); } super.checkRestrictions(context == ELEMENT_REPEAT_CONTEXT ? ELEMENT_REPEAT_GROUP_CONTEXT : context, dad, alpha); if (context != LIST_CONTEXT && !contentTypeGroupable(p1.getContentType(), p2.getContentType())) throw new RestrictionViolationException("group_string"); } <T> T apply(PatternFunction<T> f) { return f.caseGroup(this); } }