| /* |
| * Copyright 2005-2006 Sun Microsystems, Inc. All Rights Reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| package com.sun.xml.internal.rngom.binary; |
| |
| import com.sun.xml.internal.rngom.binary.visitor.PatternFunction; |
| import com.sun.xml.internal.rngom.binary.visitor.PatternVisitor; |
| |
| public class InterleavePattern extends BinaryPattern { |
| InterleavePattern(Pattern p1, Pattern p2) { |
| super(p1.isNullable() && p2.isNullable(), |
| combineHashCode(INTERLEAVE_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.makeInterleave(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_interleave"); |
| case DATA_EXCEPT_CONTEXT: |
| throw new RestrictionViolationException("data_except_contains_interleave"); |
| case LIST_CONTEXT: |
| throw new RestrictionViolationException("list_contains_interleave"); |
| } |
| if (context == ELEMENT_REPEAT_CONTEXT) |
| context = ELEMENT_REPEAT_INTERLEAVE_CONTEXT; |
| Alphabet a1; |
| if (alpha != null && alpha.isEmpty()) |
| a1 = alpha; |
| else |
| a1 = new Alphabet(); |
| p1.checkRestrictions(context, dad, a1); |
| if (a1.isEmpty()) |
| p2.checkRestrictions(context, dad, a1); |
| else { |
| Alphabet a2 = new Alphabet(); |
| p2.checkRestrictions(context, dad, a2); |
| a1.checkOverlap(a2); |
| if (alpha != null) { |
| if (alpha != a1) |
| alpha.addAlphabet(a1); |
| alpha.addAlphabet(a2); |
| } |
| } |
| if (context != LIST_CONTEXT |
| && !contentTypeGroupable(p1.getContentType(), p2.getContentType())) |
| throw new RestrictionViolationException("interleave_string"); |
| if (p1.getContentType() == MIXED_CONTENT_TYPE |
| && p2.getContentType() == MIXED_CONTENT_TYPE) |
| throw new RestrictionViolationException("interleave_text_overlap"); |
| } |
| |
| public void accept(PatternVisitor visitor) { |
| visitor.visitInterleave(p1, p2); |
| } |
| public Object apply(PatternFunction f) { |
| return f.caseInterleave(this); |
| } |
| } |