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CookCC - a Lexer / Parser (LALR(1)) Project
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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.xerces.xs;

/**
 * Describes a constraining facet. Enumeration and pattern facets are exposed 
 * via XSMultiValueFacet interface.
 */
public interface XSFacet extends XSObject {
    /**
     * The name of the facet, e.g. FACET_LENGTH, FACET_TOTALDIGITS
     *  (see XSSimpleTypeDefinition). 
     */
    public short getFacetKind();

    /**
     * A value of this facet. 
     */
    public String getLexicalFacetValue();

    /**
     * If this facet is length, minLength, maxLength, totalDigits, or
     * fractionDigits, and if the value can fit in "int", then return the value
     * of the facet as an int. If the value can't fit, return -1. Use
     * getActualFacetValue() to get the BigInteger representation. For all other
     * facets, return 0.
     */
    public int getIntFacetValue();

    /**
     * If this facet is minInclusive, maxInclusive, minExclusive, or
     * maxExclusive, then return the actual value of the facet. If this facet
     * is length, minLength, maxLength, totalDigits, or fractionDigits, then
     * return a BigInteger representation of the value. If this facet is
     * whiteSpace, then return the String representation of the facet.
     */
    public Object getActualFacetValue();

    /**
     * [Facets]: check whether a facet is fixed. 
     */
    public boolean getFixed();

    /**
     * An annotation if it exists, otherwise null. If not null
     * then the first [annotation] from the sequence of annotations.
     */
    public XSAnnotation getAnnotation();

    /**
     * A sequence of [annotations] or an empty XSObjectList.
     */
    public XSObjectList getAnnotations();    
}