ListPattern.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * Copyright (C) 2004-2011
 *
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 * of this software and associated documentation files (the "Software"), to deal
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 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
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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;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;

public class ListPattern extends Pattern {
  Pattern p;
  Locator locator;

  ListPattern(Pattern p, Locator locator) {
    super(false,
          DATA_CONTENT_TYPE,
          combineHashCode(LIST_HASH_CODE, p.hashCode()));
    this.p = p;
    this.locator = locator;
  }

    @Override
  Pattern expand(SchemaPatternBuilder b) {
    Pattern ep = p.expand(b);
    if (ep != p)
      return b.makeList(ep, locator);
    else
      return this;
  }

    @Override
  void checkRecursion(int depth) throws SAXException {
    p.checkRecursion(depth);
  }

  boolean samePattern(Pattern other) {
    return (other instanceof ListPattern
            && p == ((ListPattern)other).p);
  }

  public void accept(PatternVisitor visitor) {
    visitor.visitList(p);
  }

  public Object apply(PatternFunction f) {
    return f.caseList(this);
  }

    @Override
  void checkRestrictions(int context, DuplicateAttributeDetector dad, Alphabet alpha)
    throws RestrictionViolationException {
    switch (context) {
    case DATA_EXCEPT_CONTEXT:
      throw new RestrictionViolationException("data_except_contains_list");
    case START_CONTEXT:
      throw new RestrictionViolationException("start_contains_list");
    case LIST_CONTEXT:
      throw new RestrictionViolationException("list_contains_list");
    }
    try {
      p.checkRestrictions(LIST_CONTEXT, dad, null);
    }
    catch (RestrictionViolationException e) {
      e.maybeSetLocator(locator);
      throw e;
    }
  }

  Pattern getOperand() {
    return p;
  }
}