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      1 /* libs/graphics/views/SkTagList.cpp
      2 **
      3 ** Copyright 2006, The Android Open Source Project
      4 **
      5 ** Licensed under the Apache License, Version 2.0 (the "License");
      6 ** you may not use this file except in compliance with the License.
      7 ** You may obtain a copy of the License at
      8 **
      9 **     http://www.apache.org/licenses/LICENSE-2.0
     10 **
     11 ** Unless required by applicable law or agreed to in writing, software
     12 ** distributed under the License is distributed on an "AS IS" BASIS,
     13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 ** See the License for the specific language governing permissions and
     15 ** limitations under the License.
     16 */
     17 
     18 #include "SkTagList.h"
     19 
     20 SkTagList::~SkTagList()
     21 {
     22 }
     23 
     24 SkTagList* SkTagList::Find(SkTagList* rec, U8CPU tag)
     25 {
     26     SkASSERT(tag < kSkTagListCount);
     27 
     28     while (rec != NULL)
     29     {
     30         if (rec->fTag == tag)
     31             break;
     32         rec = rec->fNext;
     33     }
     34     return rec;
     35 }
     36 
     37 void SkTagList::DeleteTag(SkTagList** head, U8CPU tag)
     38 {
     39     SkASSERT(tag < kSkTagListCount);
     40 
     41     SkTagList* rec = *head;
     42     SkTagList* prev = NULL;
     43 
     44     while (rec != NULL)
     45     {
     46         SkTagList* next = rec->fNext;
     47 
     48         if (rec->fTag == tag)
     49         {
     50             if (prev)
     51                 prev->fNext = next;
     52             else
     53                 *head = next;
     54             delete rec;
     55             break;
     56         }
     57         prev = rec;
     58         rec = next;
     59     }
     60 }
     61 
     62 void SkTagList::DeleteAll(SkTagList* rec)
     63 {
     64     while (rec)
     65     {
     66         SkTagList* next = rec->fNext;
     67         delete rec;
     68         rec = next;
     69     }
     70 }
     71 
     72