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/*
 * Copyright (C) 2004-2011
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package com.sun.tools.rngom.parse.host;

import com.sun.tools.rngom.ast.builder.Annotations;
import com.sun.tools.rngom.ast.builder.BuildException;
import com.sun.tools.rngom.ast.builder.Grammar;
import com.sun.tools.rngom.ast.om.Location;
import com.sun.tools.rngom.ast.om.ParsedPattern;

/**
 * Wraps {@link Grammar} and provides error checking.
 * 
 * 
 * The following errors are checked by this host:
 * 
 * 

 *  referenced to undefined patterns.
 * 
 * 
 * @author
 *      Kohsuke Kawaguchi ([email protected])
 */
public class GrammarHost extends ScopeHost implements Grammar {
    final Grammar lhs;
    final Grammar rhs;

    public GrammarHost(Grammar lhs,Grammar rhs) {
        super(lhs,rhs);
        this.lhs = lhs;
        this.rhs = rhs;
    }

    public ParsedPattern endGrammar(Location _loc, Annotations _anno) throws BuildException {
        LocationHost loc = cast(_loc);
        AnnotationsHost anno = cast(_anno);
        
        return new ParsedPatternHost(
            lhs.endGrammar(loc.lhs, anno.lhs),
            rhs.endGrammar(loc.rhs, anno.rhs));
    }
}