/*
 *        JacORB - a free Java ORB
 *
 *   Copyright (C) 1997-2001  Gerald Brose.
 *
 *   This library is free software; you can redistribute it and/or
 *   modify it under the terms of the GNU Library General Public
 *   License as published by the Free Software Foundation; either
 *   version 2 of the License, or (at your option) any later version.
 *
 *   This library is distributed in the hope that it will be useful,
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *   Library General Public License for more details.
 *
 *   You should have received a copy of the GNU Library General Public
 *   License along with this library; if not, write to the Free
 *   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

package org.jacorb.idl;

/**
 * @author Gerald Brose
 * @version $Id: Member.java,v 1.5 2001/03/27 12:30:56 jacorb Exp $
 *
 */

import java.io.*;
import java.util.*;

class Member 
    extends IdlSymbol 
{
    public TypeSpec type_spec;
    public SymbolList declarators;
    public Vector extendVector;
    public StructType containing_struct;

    public Declarator declarator;

    public Member(int num)
    {
	super(num);
    }

    public void setPackage( String s)
    {
        s = parser.pack_replace(s);
	if( pack_name.length() > 0 )
	    pack_name = new String( s + "." + pack_name );
	else
	    pack_name = s;

	type_spec.setPackage(s);
	declarators.setPackage(s);
    }

    public void setEnclosingSymbol( IdlSymbol s )
    {
	enclosing_symbol = s;
	type_spec.setEnclosingSymbol(s);
	for( Enumeration e = declarators.v.elements(); e.hasMoreElements();)
	    ((Declarator)e.nextElement()).setEnclosingSymbol(s);	
    }


    public void setStruct(StructType s)
    {
	containing_struct = s;
    }

    /** must be set by MemberList before parsing */

    public void setExtendVector(Vector v)
    {
	extendVector = v;
    }

    /**
     *	Parsing members means creating new members for definitions
     *   with more than one declarator. 
     */

    public void parse() 	
    {
	boolean clone_and_parse = true;

	if( extendVector == null )
	    throw new RuntimeException("Compiler Error: extendVector not set!");

	if( type_spec.typeSpec() instanceof ScopedName )
	{
	    token = type_spec.typeSpec().get_token();
	    type_spec = ((ScopedName)type_spec.typeSpec()).resolvedTypeSpec();
	    clone_and_parse = false;
	    if( type_spec instanceof ConstrTypeSpec )
	    {
		if( ((ConstrTypeSpec)type_spec.typeSpec()).c_type_spec instanceof StructType )
		{
		    //	System.out.println("Struct " + containing_struct.typeName() + " contains struct " + ((ConstrTypeSpec)type_spec.typeSpec()).typeName());
		    if(
		       ((ConstrTypeSpec)type_spec.typeSpec()).c_type_spec.typeName().equals(containing_struct.typeName()))
		       )
		    {
			parser.fatal_error("Illegal recursion in struct (use sequence<" + 
					   containing_struct.typeName()+ "> instead)", token);
		    }
		}
	    }

	} 
	else if( type_spec.typeSpec() instanceof SequenceType )
	{
	    TypeSpec ts = ((SequenceType)type_spec.typeSpec()).elementTypeSpec().typeSpec();
            SequenceType seqTs = (SequenceType)type_spec.typeSpec();
            while( ts instanceof SequenceType )
            {
                seqTs = (SequenceType)ts;
                ts = ((SequenceType)ts.typeSpec()).elementTypeSpec().typeSpec();
            }

            if( ts.typeName().equals( containing_struct.typeName()) 
	    {
		seqTs.setRecursive();
	    }
	}
        else if( type_spec instanceof ConstrTypeSpec )
        {
            type_spec.parse();
        }



	for( Enumeration e = declarators.v.elements(); e.hasMoreElements();)
	{
	    Declarator d = (Declarator)e.nextElement();

	    // we don't parse the declarator itself
	    // as that would result in its name getting defined
	    // we define the declarator's name as a type name indirectly
	    // through the cloned type specs.

	    Member m = new Member( new_num() );
	    m.declarator = d;

 
	    TypeSpec ts = type_spec.typeSpec();

	    /* create a separate type spec copy for every declarator 
	       if the type spec is a new type definition, i.e. a
	       struct, enum, union, sequence or the declarator is
	       an array declarator
	    */

	    //			if( clone_and_parse && !(ts instanceof BaseType) )
	    if( clone_and_parse || d.d instanceof ArrayDeclarator )
	    {
		/* arrays need special treatment */

		if( d.d instanceof ArrayDeclarator )
		{
		    ts = new ArrayTypeSpec( new_num(), ts, (ArrayDeclarator)d.d, pack_name );
		    ts.parse();
		}
		else if( !(ts instanceof BaseType))
		{
		    ts = (TypeSpec)ts.clone();
                    if( !(ts instanceof ConstrTypeSpec) )
                        ts.set_name( d.name());

		    /* important: only parse type specs once (we do it for the last 
		       declarator only) */
		    if( !e.hasMoreElements() )
			ts.parse();
		}
	    }

            //            else
            if( ! (d.d instanceof ArrayDeclarator) )
            {
                try
                {
                    NameTable.define( containing_struct + "." + d.name() , 
                                      "declarator" );
                }
                catch( NameAlreadyDefined nad )
                {
                    parser.error("Declarator " + d.name() + 
                                 " already defined in scope.", token);
                }
            }

	    /* if the type spec is a scoped name, it is already parsed and
	     * the type name is defined
	     */  
	    //			if( clone_and_parse )
	    //				ts.parse();

	    m.type_spec = ts;
	    m.pack_name = this.pack_name;
	    m.name = this.name;
	    extendVector.addElement( m );
	}
	declarators = null;
    }

    /**
     *	
     */

    public void print(PrintWriter ps)
    {
	member_print( ps, "\tpublic ");
    }

    /**
     *	
     */

    public void member_print(PrintWriter ps, String prefix)
    {
	/* only print members that are not interfaces */

	if( type_spec.typeSpec() instanceof ConstrTypeSpec && 
	    !(((ConstrTypeSpec)type_spec.typeSpec()).c_type_spec.declaration() instanceof Interface)||
	    type_spec.typeSpec() instanceof SequenceType || 
	    type_spec.typeSpec() instanceof ArrayTypeSpec )
	{
	    type_spec.print(ps); 
	}

	if( type_spec.typeSpec() instanceof StringType )
            ps.print( prefix + type_spec.toString() + " " + declarator.toString() + " = \"\";" ); 
        else
            ps.print( prefix + type_spec.toString() + " " + declarator.toString() + ";" ); 
    }
}