wdelist.c

开放源码的编译器open watcom 1.6.0版的源代码

/****************************************************************************
*
*                            Open Watcom Project
*
*    Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved.
*
*  ========================================================================
*
*    This file contains Original Code and/or Modifications of Original
*    Code as defined in and that are subject to the Sybase Open Watcom
*    Public License version 1.0 (the 'License'). You may not use this file
*    except in compliance with the License. BY USING THIS FILE YOU AGREE TO
*    ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is
*    provided with the Original Code and Modifications, and is also
*    available at www.sybase.com/developer/opensource.
*
*    The Original Code and all software distributed under the License are
*    distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
*    EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM
*    ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF
*    MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR
*    NON-INFRINGEMENT. Please see the License for the specific language
*    governing rights and limitations under the License.
*
*  ========================================================================
*
* Description:  WHEN YOU FIGURE OUT WHAT THIS FILE DOES, PLEASE
*               DESCRIBE IT HERE!
*
****************************************************************************/


#include <windows.h>
#include <string.h>

#include "wdeglbl.h"
#include "wdemem.h"
#include "wdedebug.h"
#include "wdelist.h"

void WdeInsertObject ( LIST **list, void *obj )
{
    LIST *end;

    if ( !list ) {
        WdeWriteTrail("WdeInsertObject: bad list var!");
        return;
    }

    if ( *list == NULL ) {
        ListAddElt( list, obj );
    } else {
        /* make sure obj is inserted at end of list */
        WdeListLastElt ( *list, &end );
        ListInsertElt( end, obj );
    }

}

void WdeListLastElt ( LIST *list, LIST **last )
{
    LIST *end;

    if ( !list || !last ) {
        if ( last ) {
            *last = NULL;
        }
        return;
    }

    /* find the end of the list */
    for ( end = list; end && ListNext(end); end = ListNext (end) ) ;

    *last = end;

}

Bool WdeListConcat ( LIST **dest, LIST *src, uint_32 size )
{
    LIST *end;
    LIST *olist;
    void *elt;

    if ( dest == NULL ) {
        return ( TRUE );
    }

    WdeListLastElt ( *dest, &end );

    for ( olist = src; olist; olist = ListNext ( olist ) ) {
        if ( size == 0 ) {
            elt = ListElement ( olist );
        } else {
            elt = WdeMemAlloc ( size );
            if ( elt == NULL ) {
                return ( FALSE );
            }
            memcpy ( elt, ListElement ( olist ), size );
        }
        if ( end == NULL ) {
            ListAddElt ( dest, elt );
            end = *dest;
        } else {
            ListInsertElt ( end, elt );
            end = ListNext ( end );
        }
    }

    return ( TRUE );
}

LIST *WdeListCopy ( LIST *src )
{
    LIST *new;
    LIST *end;
    LIST *olist;

    end = NULL;
    new = NULL;

    for ( olist = src; olist; olist = ListNext ( olist ) ) {
        if ( end == NULL ) {
            ListAddElt ( &new, ListElement ( olist ) );
            end = new;
        } else {
            ListInsertElt ( end, ListElement ( olist ) );
            end = ListNext ( end );
        }
    }

    return ( new );
}