Examples of com.sun.msv.grammar.ReferenceExp

com.sun.msv.grammar.ReferenceExp
Reference to the other expression.
In RELAX grammar, this class is used as a base class of elementRule reference and hedgeRule reference. TREX uses this class directly.
This object is created and controlled by TREXGrammar/RELAXModule object, rather than ExpressionPool. Therefore, this object is not a subject to unification.
This class can be derived. In fact, many classes derive this class. @author Kohsuke KAWAGUCHI

        
            Iterator itr = heads.iterator();
            while( itr.hasNext() ) {
                Expression exp = (Expression)itr.next();
                if( exp instanceof ReferenceExp ) {
                    ReferenceExp rexp = (ReferenceExp)exp;
                    if( rexp.name == null ) {
                        // generate unique name
                        while( name2exp.containsKey("anonymous"+cnt) )
                            cnt++;
                        name2exp.put( "anonymous"+cnt, exp );

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        items.push(node);
        
        // test direct references
        Iterator itr = getRefExpParseInfo(node).directRefs.iterator();
        while( itr.hasNext() ) {
            ReferenceExp child = (ReferenceExp)itr.next();
            
            int idx = items.lastIndexOf(child);
            if(idx!=-1) {
                // find a cycle.
                
                String s = "";
                Vector locs = new Vector();
            
                for( ; idx<items.size(); idx++ ) {
                    ReferenceExp e = (ReferenceExp)items.get(idx);
                    if( e.name==null )    continue;    // skip anonymous ref.
                    
                    if( s.length()!=0 )     s += " > ";
                    s += e.name;

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     */
    public String printRefContainer( ReferenceContainer cont ) {
        String r="";
        java.util.Iterator itr = cont.iterator();
        while( itr.hasNext() ) {
            ReferenceExp exp = (ReferenceExp)itr.next();
            
            r += exp.name + "  : " + exp.exp.visit(this) + "\n";
        }
        return r;
    }

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                // append it to attribute list.
                contentModel = grammar.pool.createSequence( contentModel, exp );
            }
        }
            
        ReferenceExp er = grammar.namedPatterns.getOrCreate(elementName);
        er.exp = new ElementPattern(
            getNameClass(elementName,false), 
            grammar.pool.createSequence(contentModel,
                (Expression)elementDecls.get(elementName) ) );

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    private void detectCollision( ReferenceContainer col1, ReferenceContainer col2, String errMsg ) {
        Iterator itr = col1.iterator();
        while( itr.hasNext() ) {
            ReferenceExp r1    = (ReferenceExp)itr.next();
            ReferenceExp r2    = col2._get( r1.name );
            // if the grammar references elementRule by hedgeRef,
            // (or hedgeRule by ref),  HedgeRules object and ElementRules object
            // are created under the same name.
            // And it is inappropriate to report this situation as "label collision".
            // Therefore, we have to check both have definitions before reporting an error.

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            c.exp = exp;    // exp holds a sequence of AttributeExp
            getReader().setDeclaredLocationOf(c);    // remember where this AttPool is declared
        } else {
            // this attPool has @combine
            
            ReferenceExp e = getReader().combinedAttPools._getOrCreate(role);
            if( e.exp==null )    e.exp = Expression.epsilon;
            // append newly found attributes.
            e.exp = reader.pool.createSequence( exp, e.exp );
            reader.setDeclaredLocationOf(e);
        }

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            atts.put(p,current);
        }
    }
    
    public void onAttPool( AttPoolClause exp ) {
        ReferenceExp old = current;
        current = exp;
        exp.exp.visit(this);
        current = old;
    }

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