1 /*
   2  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * 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 import org.xml.sax.Locator;
  31 import org.xml.sax.SAXException;
  32 
  33 public class ListPattern extends Pattern {
  34   Pattern p;
  35   Locator locator;
  36 
  37   ListPattern(Pattern p, Locator locator) {
  38     super(false,
  39           DATA_CONTENT_TYPE,
  40           combineHashCode(LIST_HASH_CODE, p.hashCode()));
  41     this.p = p;
  42     this.locator = locator;
  43   }
  44 
  45   Pattern expand(SchemaPatternBuilder b) {
  46     Pattern ep = p.expand(b);
  47     if (ep != p)
  48       return b.makeList(ep, locator);
  49     else
  50       return this;
  51   }
  52 
  53   void checkRecursion(int depth) throws SAXException {
  54     p.checkRecursion(depth);
  55   }
  56 
  57   boolean samePattern(Pattern other) {
  58     return (other instanceof ListPattern
  59             && p == ((ListPattern)other).p);
  60   }
  61 
  62   public void accept(PatternVisitor visitor) {
  63     visitor.visitList(p);
  64   }
  65 
  66   public Object apply(PatternFunction f) {
  67     return f.caseList(this);
  68   }
  69 
  70   void checkRestrictions(int context, DuplicateAttributeDetector dad, Alphabet alpha)
  71     throws RestrictionViolationException {
  72     switch (context) {
  73     case DATA_EXCEPT_CONTEXT:
  74       throw new RestrictionViolationException("data_except_contains_list");
  75     case START_CONTEXT:
  76       throw new RestrictionViolationException("start_contains_list");
  77     case LIST_CONTEXT:
  78       throw new RestrictionViolationException("list_contains_list");
  79     }
  80     try {
  81       p.checkRestrictions(LIST_CONTEXT, dad, null);
  82     }
  83     catch (RestrictionViolationException e) {
  84       e.maybeSetLocator(locator);
  85       throw e;
  86     }
  87   }
  88 
  89   Pattern getOperand() {
  90     return p;
  91   }
  92 }