LCOV - code coverage report
Current view: top level - vcl/source/fontsubset - list.cxx (source / functions) Hit Total Coverage
Test: commit 10e77ab3ff6f4314137acd6e2702a6e5c1ce1fae Lines: 0 87 0.0 %
Date: 2014-11-03 Functions: 0 15 0.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : /*[]---------------------------------------------------[]*/
      21             : /*|                                                     |*/
      22             : /*|     list.c - bidirectional list class               |*/
      23             : /*|                                                     |*/
      24             : /*|                                                     |*/
      25             : /*|  Author: Alexander Gelfenbain                       |*/
      26             : /*[]---------------------------------------------------[]*/
      27             : 
      28             : #include <rtl/alloc.h>
      29             : #include <assert.h>
      30             : 
      31             : #include "list.h"
      32             : 
      33             : /*- private data types */
      34             : typedef struct _lnode {
      35             :     struct _lnode *next;
      36             :     struct _lnode *prev;
      37             : 
      38             :     void *value;
      39             : 
      40             : } lnode;
      41             : 
      42             : struct _list {
      43             :     lnode *head, *tail, *cptr;
      44             :     size_t aCount;
      45             :     list_destructor eDtor;
      46             : };
      47             : 
      48             : /*- private methods */
      49             : 
      50           0 : static lnode *newNode(void *el)
      51             : {
      52           0 :     lnode *ptr = (lnode *)rtl_allocateMemory(sizeof(lnode));
      53             :     assert(ptr != 0);
      54             : 
      55           0 :     ptr->value = el;
      56             : 
      57           0 :     return ptr;
      58             : }
      59             : 
      60           0 : static lnode *appendPrim(list pThis, void *el)
      61             : {
      62           0 :     lnode *ptr = newNode(el);
      63             :     lnode **flink, *blink;
      64             : 
      65           0 :     if (pThis->tail != 0) {
      66           0 :         flink = &(pThis->tail->next);
      67           0 :         blink = pThis->tail;
      68             :     } else {
      69           0 :         flink = &pThis->head;
      70           0 :         blink = 0;
      71           0 :         pThis->cptr = ptr;                         /*- list was empty - set current to this element */
      72             :     }
      73             : 
      74           0 :     *flink  = ptr;
      75           0 :     pThis->tail = ptr;
      76             : 
      77           0 :     ptr->prev = blink;
      78           0 :     ptr->next = 0;
      79             : 
      80           0 :     pThis->aCount++;
      81           0 :     return ptr;
      82             : }
      83             : 
      84             : /*- public methods  */
      85           0 : list listNewEmpty(void)                           /*- default ctor */
      86             : {
      87           0 :     list pThis = (list)rtl_allocateMemory(sizeof(struct _list));
      88             :     assert(pThis != 0);
      89             : 
      90           0 :     pThis->aCount = 0;
      91           0 :     pThis->eDtor = 0;
      92           0 :     pThis->head = pThis->tail = pThis->cptr = 0;
      93             : 
      94           0 :     return pThis;
      95             : }
      96             : 
      97           0 : void listDispose(list pThis)                       /*- dtor */
      98             : {
      99             :     assert(pThis != 0);
     100           0 :     listClear(pThis);
     101           0 :     rtl_freeMemory(pThis);
     102           0 : }
     103             : 
     104           0 : void listSetElementDtor(list pThis, list_destructor f)
     105             : {
     106             :     assert(pThis != 0);
     107           0 :     pThis->eDtor = f;
     108           0 : }
     109             : 
     110             : /* calling this function on an empty list is a run-time error */
     111           0 : void *listCurrent(list pThis)
     112             : {
     113             :     assert(pThis != 0);
     114             :     assert(pThis->cptr != 0);
     115           0 :     return pThis->cptr->value;
     116             : }
     117             : 
     118           0 : int   listCount(list pThis)
     119             : {
     120             :     assert(pThis != 0);
     121           0 :     return pThis->aCount;
     122             : }
     123             : 
     124           0 : int   listIsEmpty(list pThis)
     125             : {
     126             :     assert(pThis != 0);
     127           0 :     return pThis->aCount == 0;
     128             : }
     129             : 
     130           0 : int    listNext(list pThis)
     131             : {
     132           0 :     return listSkipForward(pThis, 1);
     133             : }
     134             : 
     135           0 : int    listSkipForward(list pThis, int n)
     136             : {
     137           0 :     int m = 0;
     138             :     assert(pThis != 0);
     139             : 
     140           0 :     if (pThis->cptr == 0) return 0;
     141             : 
     142           0 :     while (n != 0) {
     143           0 :         if (pThis->cptr->next == 0) break;
     144           0 :         pThis->cptr = pThis->cptr->next;
     145           0 :         n--;
     146           0 :         m++;
     147             :     }
     148           0 :     return m;
     149             : }
     150             : 
     151           0 : int    listToFirst(list pThis)
     152             : {
     153             :     assert(pThis != 0);
     154             : 
     155           0 :     if (pThis->cptr != pThis->head) {
     156           0 :         pThis->cptr = pThis->head;
     157           0 :         return 1;
     158             :     }
     159           0 :     return 0;
     160             : }
     161             : 
     162           0 : int    listToLast(list pThis)
     163             : {
     164             :     assert(pThis != 0);
     165             : 
     166           0 :     if (pThis->cptr != pThis->tail) {
     167           0 :         pThis->cptr = pThis->tail;
     168           0 :         return 1;
     169             :     }
     170           0 :     return 0;
     171             : }
     172             : 
     173           0 : list   listAppend(list pThis, void *el)
     174             : {
     175             :     assert(pThis != 0);
     176             : 
     177           0 :     appendPrim(pThis, el);
     178           0 :     return pThis;
     179             : }
     180             : 
     181           0 : list   listRemove(list pThis)
     182             : {
     183           0 :     lnode *ptr = 0;
     184           0 :     if (pThis->cptr == 0) return pThis;
     185             : 
     186           0 :     if (pThis->cptr->next != 0) {
     187           0 :         ptr  = pThis->cptr->next;
     188           0 :         pThis->cptr->next->prev = pThis->cptr->prev;
     189             :     } else {
     190           0 :         pThis->tail = pThis->cptr->prev;
     191             :     }
     192             : 
     193           0 :     if (pThis->cptr->prev != 0) {
     194           0 :         if (ptr == 0) ptr = pThis->cptr->prev;
     195           0 :         pThis->cptr->prev->next = pThis->cptr->next;
     196             :     } else {
     197           0 :         pThis->head = pThis->cptr->next;
     198             :     }
     199             : 
     200           0 :     if (pThis->eDtor) pThis->eDtor(pThis->cptr->value);        /* call the dtor callback */
     201             : 
     202           0 :     rtl_freeMemory(pThis->cptr);
     203           0 :     pThis->aCount--;
     204           0 :     pThis->cptr = ptr;
     205           0 :     return pThis;
     206             : }
     207             : 
     208           0 : list   listClear(list pThis)
     209             : {
     210           0 :     lnode *node = pThis->head, *ptr;
     211             : 
     212           0 :     while (node) {
     213           0 :         ptr = node->next;
     214           0 :         if (pThis->eDtor) pThis->eDtor(node->value);           /* call the dtor callback */
     215           0 :         rtl_freeMemory(node);
     216           0 :         pThis->aCount--;
     217           0 :         node = ptr;
     218             :     }
     219             : 
     220           0 :     pThis->head = pThis->tail = pThis->cptr = 0;
     221             :     assert(pThis->aCount == 0);
     222           0 :     return pThis;
     223             : }
     224             : 
     225             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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