LCOV - app.info - content/smil/nsSMILValue.cpp

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: | 2012-07-07 | 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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