01: /*
02: * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved.
03: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
04: *
05: * This code is free software; you can redistribute it and/or modify it
06: * under the terms of the GNU General Public License version 2 only, as
07: * published by the Free Software Foundation. Sun designates this
08: * particular file as subject to the "Classpath" exception as provided
09: * by Sun in the LICENSE file that accompanied this code.
10: *
11: * This code is distributed in the hope that it will be useful, but WITHOUT
12: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14: * version 2 for more details (a copy is included in the LICENSE file that
15: * accompanied this code).
16: *
17: * You should have received a copy of the GNU General Public License version
18: * 2 along with this work; if not, write to the Free Software Foundation,
19: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20: *
21: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
22: * CA 95054 USA or visit www.sun.com if you need additional information or
23: * have any questions.
24: */
25:
26: package com.sun.xml.internal.rngom.binary;
27:
28: import com.sun.xml.internal.rngom.binary.visitor.PatternFunction;
29: import com.sun.xml.internal.rngom.binary.visitor.PatternVisitor;
30:
31: public class InterleavePattern extends BinaryPattern {
32: InterleavePattern(Pattern p1, Pattern p2) {
33: super (p1.isNullable() && p2.isNullable(), combineHashCode(
34: INTERLEAVE_HASH_CODE, p1.hashCode(), p2.hashCode()),
35: p1, p2);
36: }
37:
38: Pattern expand(SchemaPatternBuilder b) {
39: Pattern ep1 = p1.expand(b);
40: Pattern ep2 = p2.expand(b);
41: if (ep1 != p1 || ep2 != p2)
42: return b.makeInterleave(ep1, ep2);
43: else
44: return this ;
45: }
46:
47: void checkRestrictions(int context, DuplicateAttributeDetector dad,
48: Alphabet alpha) throws RestrictionViolationException {
49: switch (context) {
50: case START_CONTEXT:
51: throw new RestrictionViolationException(
52: "start_contains_interleave");
53: case DATA_EXCEPT_CONTEXT:
54: throw new RestrictionViolationException(
55: "data_except_contains_interleave");
56: case LIST_CONTEXT:
57: throw new RestrictionViolationException(
58: "list_contains_interleave");
59: }
60: if (context == ELEMENT_REPEAT_CONTEXT)
61: context = ELEMENT_REPEAT_INTERLEAVE_CONTEXT;
62: Alphabet a1;
63: if (alpha != null && alpha.isEmpty())
64: a1 = alpha;
65: else
66: a1 = new Alphabet();
67: p1.checkRestrictions(context, dad, a1);
68: if (a1.isEmpty())
69: p2.checkRestrictions(context, dad, a1);
70: else {
71: Alphabet a2 = new Alphabet();
72: p2.checkRestrictions(context, dad, a2);
73: a1.checkOverlap(a2);
74: if (alpha != null) {
75: if (alpha != a1)
76: alpha.addAlphabet(a1);
77: alpha.addAlphabet(a2);
78: }
79: }
80: if (context != LIST_CONTEXT
81: && !contentTypeGroupable(p1.getContentType(), p2
82: .getContentType()))
83: throw new RestrictionViolationException("interleave_string");
84: if (p1.getContentType() == MIXED_CONTENT_TYPE
85: && p2.getContentType() == MIXED_CONTENT_TYPE)
86: throw new RestrictionViolationException(
87: "interleave_text_overlap");
88: }
89:
90: public void accept(PatternVisitor visitor) {
91: visitor.visitInterleave(p1, p2);
92: }
93:
94: public Object apply(PatternFunction f) {
95: return f.caseInterleave(this);
96: }
97: }
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