LCOV - code coverage report
Current view: directory - layout/style - nsRuleData.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 14 0 0.0 %
Date: 2012-06-02 Functions: 3 0 0.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* ***** BEGIN LICENSE BLOCK *****
       3                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       4                 :  *
       5                 :  * The contents of this file are subject to the Mozilla Public License Version
       6                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       7                 :  * the License. You may obtain a copy of the License at
       8                 :  * http://www.mozilla.org/MPL/
       9                 :  *
      10                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      11                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      12                 :  * for the specific language governing rights and limitations under the
      13                 :  * License.
      14                 :  *
      15                 :  * The Original Code is Mozilla Communicator client code.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is
      18                 :  * Netscape Communications Corporation.
      19                 :  * Portions created by the Initial Developer are Copyright (C) 1998
      20                 :  * the Initial Developer. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Original Author: David W. Hyatt (hyatt@netscape.com)
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either of the GNU General Public License Version 2 or later (the "GPL"),
      27                 :  * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      28                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      29                 :  * of those above. If you wish to allow use of your version of this file only
      30                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      31                 :  * use your version of this file under the terms of the MPL, indicate your
      32                 :  * decision by deleting the provisions above and replace them with the notice
      33                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      34                 :  * the provisions above, a recipient may use your version of this file under
      35                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      36                 :  *
      37                 :  * ***** END LICENSE BLOCK ***** */
      38                 : 
      39                 : #include "nsRuleData.h"
      40                 : #include "nsCSSProps.h"
      41                 : #include "nsPresArena.h"
      42                 : 
      43                 : inline size_t
      44               0 : nsRuleData::GetPoisonOffset()
      45                 : {
      46                 :   // Fill in mValueOffsets such that mValueStorage + mValueOffsets[i]
      47                 :   // will yield the frame poison value for all uninitialized value
      48                 :   // offsets.
      49                 :   MOZ_STATIC_ASSERT(sizeof(PRUword) == sizeof(size_t),
      50                 :                     "expect PRUword and size_t to be the same size");
      51                 :   MOZ_STATIC_ASSERT(PRUword(-1) > PRUword(0),
      52                 :                     "expect PRUword to be unsigned");
      53                 :   MOZ_STATIC_ASSERT(size_t(-1) > size_t(0),
      54                 :                     "expect size_t to be unsigned");
      55               0 :   PRUword framePoisonValue = nsPresArena::GetPoisonValue();
      56                 :   return size_t(framePoisonValue - PRUword(mValueStorage)) /
      57               0 :          sizeof(nsCSSValue);
      58                 : }
      59                 : 
      60               0 : nsRuleData::nsRuleData(PRUint32 aSIDs, nsCSSValue* aValueStorage,
      61                 :                        nsPresContext* aContext, nsStyleContext* aStyleContext)
      62                 :   : mSIDs(aSIDs),
      63                 :     mCanStoreInRuleTree(true),
      64                 :     mPresContext(aContext),
      65                 :     mStyleContext(aStyleContext),
      66                 :     mPostResolveCallback(nsnull),
      67               0 :     mValueStorage(aValueStorage)
      68                 : {
      69                 : #ifndef MOZ_VALGRIND
      70               0 :   size_t framePoisonOffset = GetPoisonOffset();
      71               0 :   for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
      72               0 :     mValueOffsets[i] = framePoisonOffset;
      73                 :   }
      74                 : #endif
      75               0 : }
      76                 : 
      77                 : #ifdef DEBUG
      78               0 : nsRuleData::~nsRuleData()
      79                 : {
      80                 : #ifndef MOZ_VALGRIND
      81                 :   // assert nothing in mSIDs has poison value
      82               0 :   size_t framePoisonOffset = GetPoisonOffset();
      83               0 :   for (size_t i = 0; i < nsStyleStructID_Length; ++i) {
      84               0 :     NS_ABORT_IF_FALSE(!(mSIDs & (1 << i)) ||
      85                 :                       mValueOffsets[i] != framePoisonOffset,
      86                 :                       "value in SIDs was left with poison offset");
      87                 :   }
      88                 : #endif
      89               0 : }
      90                 : #endif

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