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/*
 * Copyright (c) 2001-2013 Oracle and/or its affiliates. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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 */

package com.sun.msv.reader.xmlschema;

import com.sun.msv.grammar.Expression;
import com.sun.msv.grammar.xmlschema.SimpleTypeExp;
import com.sun.msv.reader.ExpressionOwner;
import com.sun.msv.reader.SimpleState;
import com.sun.msv.reader.State;
import com.sun.msv.reader.datatype.xsd.XSDatatypeExp;
import com.sun.msv.reader.datatype.xsd.XSTypeOwner;
import com.sun.msv.util.StartTagInfo;

/**
 * State that parses global declarations.
 * 
 * @author Kohsuke KAWAGUCHI
 */
public class GlobalDeclState extends SimpleState
    implements ExpressionOwner,XSTypeOwner {
    
    protected State createChildState( StartTagInfo tag ) {
        final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
        
        if(tag.localName.equals("include"))            return reader.sfactory.include(this,tag);
        if(tag.localName.equals("import"))            return reader.sfactory.import_(this,tag);
        if(tag.localName.equals("redefine"))        return reader.sfactory.redefine(this,tag);
        if(tag.localName.equals("simpleType"))        return reader.sfactory.simpleType(this,tag);
        if(tag.localName.equals("complexType"))        return reader.sfactory.complexTypeDecl(this,tag);
        if(tag.localName.equals("group"))            return reader.sfactory.group(this,tag);
        if(tag.localName.equals("attributeGroup"))    return reader.sfactory.attributeGroup(this,tag);
        if(tag.localName.equals("element"))            return reader.sfactory.elementDecl(this,tag);
        if(tag.localName.equals("attribute"))        return reader.sfactory.attribute(this,tag);
        if(tag.localName.equals("notation"))        return reader.sfactory.notation(this,tag);
        
        return null;
    }

    public String getTargetNamespaceUri() {
        final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
        return reader.currentSchema.targetNamespace;
    }
    
    // do nothing. declarations register themselves by themselves.
    public void onEndChild( Expression exp ) {}
    
    public void onEndChild( XSDatatypeExp type ) {
        final XMLSchemaReader reader = (XMLSchemaReader)this.reader;
//        final XSDatatypeImpl dti = (XSDatatypeImpl)type;
//        final String typeName = dti.getName();
        
        String typeName = reader.getCurrentState().getStartTag().getAttribute("name");
        
        if( typeName==null ) {
            // top-level simpleType must define a named type
            reader.reportError( XMLSchemaReader.ERR_MISSING_ATTRIBUTE, "simpleType", "name" );
            return;    // recover by ignoring this declaration
        }
        
        // memorize this type.
        final SimpleTypeExp exp = reader.currentSchema.simpleTypes.getOrCreate(typeName);
        if(exp.getType()!=null ) {
            reader.reportError( XMLSchemaReader.ERR_DATATYPE_ALREADY_DEFINED, typeName );
            return;
            // recover by ignoring this declaration
        }
        
        exp.set(type);
        reader.setDeclaredLocationOf(exp);
    }
}