LCOV - code coverage report
Current view: directory - embedding/components/commandhandler/src - nsCommandParams.h (source / functions) Found Hit Coverage
Test: app.info Lines: 25 0 0.0 %
Date: 2012-06-02 Functions: 4 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.org 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                 :  *
      24                 :  * Alternatively, the contents of this file may be used under the terms of
      25                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      26                 :  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
      27                 :  * in which case the provisions of the GPL or the LGPL are applicable instead
      28                 :  * of those above. If you wish to allow use of your version of this file only
      29                 :  * under the terms of either the GPL or the LGPL, and not to allow others to
      30                 :  * use your version of this file under the terms of the MPL, indicate your
      31                 :  * decision by deleting the provisions above and replace them with the notice
      32                 :  * and other provisions required by the GPL or the LGPL. If you do not delete
      33                 :  * the provisions above, a recipient may use your version of this file under
      34                 :  * the terms of any one of the MPL, the GPL or the LGPL.
      35                 :  *
      36                 :  * ***** END LICENSE BLOCK ***** */
      37                 : 
      38                 : 
      39                 : #ifndef nsCommandParams_h__
      40                 : #define nsCommandParams_h__
      41                 : 
      42                 : #include "nsString.h"
      43                 : 
      44                 : #include "nsICommandParams.h"
      45                 : 
      46                 : #include "nsCOMPtr.h"
      47                 : #include "nsHashtable.h"
      48                 : 
      49                 : #include "pldhash.h"
      50                 : 
      51                 : 
      52                 : 
      53                 : class nsCommandParams : public nsICommandParams
      54                 : {
      55                 : public:
      56                 : 
      57                 :                       nsCommandParams();
      58                 :   virtual             ~nsCommandParams();
      59                 :   
      60                 :   
      61                 :   NS_DECL_ISUPPORTS
      62                 :   NS_DECL_NSICOMMANDPARAMS
      63                 : 
      64                 :   nsresult            Init();
      65                 :   
      66                 : protected:
      67                 : 
      68                 :   struct HashEntry : public PLDHashEntryHdr
      69               0 :   {
      70                 :     nsCString      mEntryName;
      71                 : 
      72                 :     PRUint8       mEntryType;
      73                 :     union {
      74                 :     
      75                 :       bool                    mBoolean;
      76                 :       PRInt32                 mLong;
      77                 :       double                  mDouble;
      78                 :       nsString*               mString;
      79                 :       nsCString*              mCString;
      80                 :     } mData;
      81                 : 
      82                 :     nsCOMPtr<nsISupports>   mISupports;    
      83                 :     
      84               0 :     HashEntry(PRUint8 inType, const char * inEntryName)
      85                 :     : mEntryName(inEntryName)
      86               0 :     , mEntryType(inType)
      87                 :     {
      88               0 :       memset(&mData, 0, sizeof(mData));
      89               0 :       Reset(mEntryType);
      90               0 :     }
      91                 : 
      92                 :     HashEntry(const HashEntry& inRHS)
      93                 :     : mEntryType(inRHS.mEntryType)
      94                 :     {
      95                 :       Reset(mEntryType);
      96                 :       switch (mEntryType)
      97                 :       {
      98                 :         case eBooleanType:      mData.mBoolean = inRHS.mData.mBoolean;  break;
      99                 :         case eLongType:         mData.mLong    = inRHS.mData.mLong;     break;
     100                 :         case eDoubleType:       mData.mDouble  = inRHS.mData.mDouble;   break;
     101                 :         case eWStringType:
     102                 :           NS_ASSERTION(inRHS.mData.mString, "Source entry has no string");
     103                 :           mData.mString = new nsString(*inRHS.mData.mString);
     104                 :           break;      
     105                 :         case eStringType:
     106                 :           NS_ASSERTION(inRHS.mData.mCString, "Source entry has no string");
     107                 :           mData.mCString = new nsCString(*inRHS.mData.mCString);
     108                 :           break;      
     109                 :         case eISupportsType:
     110                 :           mISupports = inRHS.mISupports.get();    // additional addref
     111                 :           break;
     112                 :         default:
     113                 :           NS_ERROR("Unknown type");
     114                 :       }
     115                 :     }
     116                 :     
     117               0 :     ~HashEntry()
     118               0 :     {
     119               0 :       if (mEntryType == eWStringType)
     120               0 :         delete mData.mString;
     121               0 :       else if (mEntryType == eStringType)
     122               0 :         delete mData.mCString;
     123               0 :     }
     124                 :     
     125               0 :     void Reset(PRUint8 inNewType)
     126                 :     {
     127               0 :       switch (mEntryType)
     128                 :       {
     129               0 :         case eNoType:                                       break;
     130               0 :         case eBooleanType:      mData.mBoolean = false;  break;
     131               0 :         case eLongType:         mData.mLong = 0;            break;
     132               0 :         case eDoubleType:       mData.mDouble = 0.0;        break;
     133               0 :         case eWStringType:      delete mData.mString; mData.mString = nsnull;     break;
     134               0 :         case eISupportsType:    mISupports = nsnull;        break;    // clear the nsCOMPtr
     135               0 :         case eStringType:       delete mData.mCString; mData.mCString = nsnull;   break;
     136                 :         default:
     137               0 :           NS_ERROR("Unknown type");
     138                 :       }
     139                 :       
     140               0 :       mEntryType = inNewType;
     141               0 :     }
     142                 :     
     143                 :   };
     144                 : 
     145                 : 
     146                 :   HashEntry*          GetNamedEntry(const char * name);
     147                 :   HashEntry*          GetIndexedEntry(PRInt32 index);
     148                 :   PRUint32            GetNumEntries();
     149                 :   
     150                 :   nsresult            GetOrMakeEntry(const char * name, PRUint8 entryType, HashEntry*& outEntry);
     151                 :   
     152                 : protected:
     153                 : 
     154                 :   static PLDHashNumber HashKey(PLDHashTable *table, const void *key);
     155                 : 
     156                 :   static bool          HashMatchEntry(PLDHashTable *table,
     157                 :                                       const PLDHashEntryHdr *entry, const void *key);
     158                 :   
     159                 :   static void          HashMoveEntry(PLDHashTable *table, const PLDHashEntryHdr *from,
     160                 :                                      PLDHashEntryHdr *to);
     161                 :   
     162                 :   static void          HashClearEntry(PLDHashTable *table, PLDHashEntryHdr *entry);
     163                 :   
     164                 :                                   
     165                 : protected:
     166                 :   
     167                 :   enum {
     168                 :     eNumEntriesUnknown      = -1
     169                 :   };
     170                 : 
     171                 :   // this is going to have to use a pldhash, because we need to
     172                 :   // be able to iterate through entries, passing names back
     173                 :   // to the caller, which means that we need to store the names
     174                 :   // internally.
     175                 :   
     176                 :   PLDHashTable    mValuesHash;
     177                 :   
     178                 :   // enumerator data
     179                 :   PRInt32         mCurEntry;
     180                 :   PRInt32         mNumEntries;      // number of entries at start of enumeration (-1 indicates not known)
     181                 :     
     182                 :   static PLDHashTableOps    sHashOps;
     183                 : };
     184                 : 
     185                 : 
     186                 : #endif // nsCommandParams_h__

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