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package com.sun.msv.reader.trex;
import com.sun.msv.grammar.AttributeExp;
import com.sun.msv.grammar.Expression;
/**
* parses <attribute> pattern.
*
* @author <a href="mailto:kohsuke.kawaguchi@eng.sun.com">Kohsuke KAWAGUCHI</a>
*/
public class AttributeState extends NameClassAndExpressionState
{
protected boolean firstChild=true;
protected Expression initialExpression() {
// <attribute> defaults to <anyString />
return Expression.anyString;
}
protected String getNamespace() {
final String ns = startTag.getAttribute("ns");
final boolean global = "true".equals(startTag.getAttribute("global"));
if( ns!=null ) return ns; // "ns" attribute always has precedence.
// if global="true" is specified, it defaults to propagated ns attribute.
if( global ) return ((TREXBaseReader)reader).targetNamespace;
// otherwise, it defaults to ""
return "";
}
protected Expression castExpression( Expression initialExpression, Expression newChild ) {
// <attribute> is allowed to have only one pattern
if(!firstChild)
reader.reportError( TREXBaseReader.ERR_MORE_THAN_ONE_CHILD_EXPRESSION );
// recover by ignore the error
firstChild = false;
return newChild;
}
protected Expression annealExpression( Expression contentModel ) {
Expression e = reader.pool.createAttribute( nameClass, contentModel );
if(e instanceof AttributeExp)
reader.setDeclaredLocationOf(e);
return e;
}
}