/* Copyright (c) 2009 The Khronos Group Inc.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and/or associated documentation files (the

 * "Materials"), to deal in the Materials without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Materials, and to

 * permit persons to whom the Materials are furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Materials.

 *

 * THE MATERIALS ARE PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.

 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY

 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,

 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE

 * MATERIALS OR THE USE OR OTHER DEALINGS IN THE MATERIALS.

 */

#ifdef __cplusplus

extern "C"

{

#endif

#include <string.h>

#include <stdlib.h>

#include "owfmemory.h"

#include "owflinkedlist.h"

#include "owftypes.h"

#include "owfpool.h"

OWF_API_CALL OWF_NODE*

OWF_Node_Create(OWF_POOL* pool, void* data)

{

    OWF_NODE*               node;

    node = (OWF_NODE*)OWF_Pool_GetObject(pool);

    if (node)

    {

        node->data = data;

    }

    return node;

}

OWF_API_CALL void

OWF_Node_Destroy(OWF_NODE* node)

{

    OWF_Pool_PutObject(node);

}

OWF_API_CALL OWF_NODE*

OWF_List_Tail(OWF_NODE* root)

{

    if (root)

    {

        while (root->next)

        {

            root = root->next;

        }

    }

    return root;

}

OWF_API_CALL OWF_NODE*

OWF_List_Append(OWF_NODE* root, OWF_NODE* node)

{

    OWF_NODE*               tail;

    tail = OWF_List_Tail(root);

    if (tail)

    {

        tail->next = node;

    }

    else

    {

        root = node;

    }

    return root;

}

OWF_API_CALL OWF_NODE*

OWF_List_Insert(OWF_NODE* root, OWF_NODE* node)

{

    if (root)

    {

        node->next = root;

    }

    root = node;

    return root;

}

OWF_API_CALL void

OWF_List_InsertAfter(OWF_NODE* pred, OWF_NODE* succ)

{

    if (pred && succ)

    {

        succ->next = pred->next;

        pred->next = succ;

    }

}

OWF_API_CALL OWF_NODE*

OWF_List_Contains(OWF_NODE* root, void* data)

{

    while (root)

    {

        if (root->data == data)

        {

            break;

        }

        root = root->next;

    }

    return root;

}

OWF_API_CALL OWF_NODE*

OWF_List_Remove(OWF_NODE* root, OWF_NODE* node)

{

    OWF_NODE*                iter = NULL;

    if (root)

    {

        if (node != root)

        {

            iter = root;

            while (iter)

            {

                if (iter->next == node)

                {

                    iter->next = node->next;

                    break;

                }

                iter = iter->next;

            }

        }

        else

        {

            root = root->next;

        }

    }

    return root;

}

OWF_API_CALL OWF_NODE*

OWF_List_Clear(OWF_NODE* root)

{

    OWF_NODE* next = NULL;

    while (root)

    {

        next = root->next;

        OWF_Node_Destroy(root);

        root = next;

    }

    return root;

}

#ifdef __cplusplus

}

#endif