LCOV - code coverage report
Current view: directory - content/smil - nsSMILValue.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 63 0 0.0 %
Date: 2012-06-02 Functions: 12 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 the Mozilla SMIL module.
      16                 :  *
      17                 :  * The Initial Developer of the Original Code is Brian Birtles.
      18                 :  * Portions created by the Initial Developer are Copyright (C) 2006
      19                 :  * the Initial Developer. All Rights Reserved.
      20                 :  *
      21                 :  * Contributor(s):
      22                 :  *   Robert O'Callahan <roc+moz@cs.cmu.edu>
      23                 :  *   Brian Birtles <birtles@gmail.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 "nsSMILValue.h"
      40                 : #include "nsDebug.h"
      41                 : #include <string.h>
      42                 : 
      43                 : //----------------------------------------------------------------------
      44                 : // Public methods
      45                 : 
      46               0 : nsSMILValue::nsSMILValue(const nsISMILType* aType)
      47               0 :   : mType(&nsSMILNullType::sSingleton)
      48                 : {
      49               0 :   if (!aType) {
      50               0 :     NS_ERROR("Trying to construct nsSMILValue with null mType pointer");
      51               0 :     return;
      52                 :   }
      53                 : 
      54               0 :   InitAndCheckPostcondition(aType);
      55                 : }
      56                 : 
      57               0 : nsSMILValue::nsSMILValue(const nsSMILValue& aVal)
      58               0 :   : mType(&nsSMILNullType::sSingleton)
      59                 : {
      60               0 :   InitAndCheckPostcondition(aVal.mType);
      61               0 :   mType->Assign(*this, aVal);
      62               0 : }
      63                 : 
      64                 : const nsSMILValue&
      65               0 : nsSMILValue::operator=(const nsSMILValue& aVal)
      66                 : {
      67               0 :   if (&aVal == this)
      68               0 :     return *this;
      69                 : 
      70               0 :   if (mType != aVal.mType) {
      71               0 :     DestroyAndReinit(aVal.mType);
      72                 :   }
      73                 : 
      74               0 :   mType->Assign(*this, aVal);
      75                 : 
      76               0 :   return *this;
      77                 : }
      78                 : 
      79                 : bool
      80               0 : nsSMILValue::operator==(const nsSMILValue& aVal) const
      81                 : {
      82               0 :   if (&aVal == this)
      83               0 :     return true;
      84                 : 
      85               0 :   return mType == aVal.mType && mType->IsEqual(*this, aVal);
      86                 : }
      87                 : 
      88                 : void
      89               0 : nsSMILValue::Swap(nsSMILValue& aOther)
      90                 : {
      91               0 :   nsSMILValue tmp;
      92               0 :   memcpy(&tmp,    &aOther, sizeof(nsSMILValue));  // tmp    = aOther
      93               0 :   memcpy(&aOther, this,    sizeof(nsSMILValue));  // aOther = this
      94               0 :   memcpy(this,    &tmp,    sizeof(nsSMILValue));  // this   = tmp
      95                 : 
      96                 :   // |tmp| is about to die -- we need to clear its mType, so that its
      97                 :   // destructor doesn't muck with the data we just transferred out of it.
      98               0 :   tmp.mType = &nsSMILNullType::sSingleton;
      99               0 : }
     100                 : 
     101                 : nsresult
     102               0 : nsSMILValue::Add(const nsSMILValue& aValueToAdd, PRUint32 aCount)
     103                 : {
     104               0 :   if (aValueToAdd.mType != mType) {
     105               0 :     NS_ERROR("Trying to add incompatible types");
     106               0 :     return NS_ERROR_FAILURE;
     107                 :   }
     108                 : 
     109               0 :   return mType->Add(*this, aValueToAdd, aCount);
     110                 : }
     111                 : 
     112                 : nsresult
     113               0 : nsSMILValue::SandwichAdd(const nsSMILValue& aValueToAdd)
     114                 : {
     115               0 :   if (aValueToAdd.mType != mType) {
     116               0 :     NS_ERROR("Trying to add incompatible types");
     117               0 :     return NS_ERROR_FAILURE;
     118                 :   }
     119                 : 
     120               0 :   return mType->SandwichAdd(*this, aValueToAdd);
     121                 : }
     122                 : 
     123                 : nsresult
     124               0 : nsSMILValue::ComputeDistance(const nsSMILValue& aTo, double& aDistance) const
     125                 : {
     126               0 :   if (aTo.mType != mType) {
     127               0 :     NS_ERROR("Trying to calculate distance between incompatible types");
     128               0 :     return NS_ERROR_FAILURE;
     129                 :   }
     130                 : 
     131               0 :   return mType->ComputeDistance(*this, aTo, aDistance);
     132                 : }
     133                 : 
     134                 : nsresult
     135               0 : nsSMILValue::Interpolate(const nsSMILValue& aEndVal,
     136                 :                          double aUnitDistance,
     137                 :                          nsSMILValue& aResult) const
     138                 : {
     139               0 :   if (aEndVal.mType != mType) {
     140               0 :     NS_ERROR("Trying to interpolate between incompatible types");
     141               0 :     return NS_ERROR_FAILURE;
     142                 :   }
     143                 : 
     144               0 :   if (aResult.mType != mType) {
     145                 :     // Outparam has wrong type
     146               0 :     aResult.DestroyAndReinit(mType);
     147                 :   }
     148                 : 
     149               0 :   return mType->Interpolate(*this, aEndVal, aUnitDistance, aResult);
     150                 : }
     151                 : 
     152                 : //----------------------------------------------------------------------
     153                 : // Helper methods
     154                 : 
     155                 : // Wrappers for nsISMILType::Init & ::Destroy that verify their postconditions
     156                 : void
     157               0 : nsSMILValue::InitAndCheckPostcondition(const nsISMILType* aNewType)
     158                 : {
     159               0 :   aNewType->Init(*this);
     160               0 :   NS_ABORT_IF_FALSE(mType == aNewType,
     161                 :                     "Post-condition of Init failed. nsSMILValue is invalid");
     162               0 : }
     163                 :                 
     164                 : void
     165               0 : nsSMILValue::DestroyAndCheckPostcondition()
     166                 : {
     167               0 :   mType->Destroy(*this);
     168               0 :   NS_ABORT_IF_FALSE(IsNull(), "Post-condition of Destroy failed. "
     169                 :                     "nsSMILValue not null after destroying");
     170               0 : }
     171                 : 
     172                 : void
     173               0 : nsSMILValue::DestroyAndReinit(const nsISMILType* aNewType)
     174                 : {
     175               0 :   DestroyAndCheckPostcondition();
     176               0 :   InitAndCheckPostcondition(aNewType);
     177               0 : }

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