LCOV - code coverage report
Current view: directory - xpcom/string/src - nsTSubstringTuple.cpp (source / functions) Found Hit Coverage
Test: app.info Lines: 22 21 95.5 %
Date: 2012-06-02 Functions: 6 6 100.0 %

       1                 : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2                 : /* vim:set ts=2 sw=2 sts=2 et cindent: */
       3                 : /* ***** BEGIN LICENSE BLOCK *****
       4                 :  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
       5                 :  *
       6                 :  * The contents of this file are subject to the Mozilla Public License Version
       7                 :  * 1.1 (the "License"); you may not use this file except in compliance with
       8                 :  * the License. You may obtain a copy of the License at
       9                 :  * http://www.mozilla.org/MPL/
      10                 :  *
      11                 :  * Software distributed under the License is distributed on an "AS IS" basis,
      12                 :  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
      13                 :  * for the specific language governing rights and limitations under the
      14                 :  * License.
      15                 :  *
      16                 :  * The Original Code is Mozilla.
      17                 :  *
      18                 :  * The Initial Developer of the Original Code is IBM Corporation.
      19                 :  * Portions created by IBM Corporation are Copyright (C) 2003
      20                 :  * IBM Corporation. All Rights Reserved.
      21                 :  *
      22                 :  * Contributor(s):
      23                 :  *   Darin Fisher <darin@meer.net>
      24                 :  *
      25                 :  * Alternatively, the contents of this file may be used under the terms of
      26                 :  * either the GNU General Public License Version 2 or later (the "GPL"), or
      27                 :  * 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                 : 
      40                 :   /**
      41                 :    * computes the aggregate string length
      42                 :    */
      43                 : 
      44                 : nsTSubstringTuple_CharT::size_type
      45          902331 : nsTSubstringTuple_CharT::Length() const
      46                 :   {
      47                 :     PRUint32 len;
      48          902331 :     if (mHead)
      49           63278 :       len = mHead->Length();
      50                 :     else
      51          839053 :       len = TO_SUBSTRING(mFragA).Length();
      52                 : 
      53          902331 :     return len + TO_SUBSTRING(mFragB).Length();
      54                 :   }
      55                 : 
      56                 : 
      57                 :   /**
      58                 :    * writes the aggregate string to the given buffer.  bufLen is assumed
      59                 :    * to be equal to or greater than the value returned by the Length()
      60                 :    * method.  the string written to |buf| is not null-terminated.
      61                 :    */
      62                 : 
      63                 : void
      64          902331 : nsTSubstringTuple_CharT::WriteTo( char_type *buf, PRUint32 bufLen ) const
      65                 :   {
      66          902331 :     const substring_type& b = TO_SUBSTRING(mFragB);
      67                 : 
      68          902331 :     NS_ASSERTION(bufLen >= b.Length(), "buffer too small");
      69          902331 :     PRUint32 headLen = bufLen - b.Length();
      70          902331 :     if (mHead)
      71                 :       {
      72           63278 :         mHead->WriteTo(buf, headLen);
      73                 :       }
      74                 :     else
      75                 :       {
      76          839053 :         const substring_type& a = TO_SUBSTRING(mFragA);
      77                 : 
      78          839053 :         NS_ASSERTION(a.Length() == headLen, "buffer incorrectly sized");
      79          839053 :         char_traits::copy(buf, a.Data(), a.Length());
      80                 :       }
      81                 : 
      82          902331 :     char_traits::copy(buf + headLen, b.Data(), b.Length());
      83                 : 
      84                 : #if 0
      85                 :     // we need to write out data into |buf|, ending at |buf+bufLen|.  so our
      86                 :     // data needs to precede |buf+bufLen| exactly.  we trust that the buffer
      87                 :     // was properly sized!
      88                 : 
      89                 :     const substring_type& b = TO_SUBSTRING(mFragB);
      90                 : 
      91                 :     NS_ASSERTION(bufLen >= b.Length(), "buffer is too small");
      92                 :     char_traits::copy(buf + bufLen - b.Length(), b.Data(), b.Length());
      93                 : 
      94                 :     bufLen -= b.Length();
      95                 : 
      96                 :     if (mHead)
      97                 :       {
      98                 :         mHead->WriteTo(buf, bufLen);
      99                 :       }
     100                 :     else
     101                 :       {
     102                 :         const substring_type& a = TO_SUBSTRING(mFragA);
     103                 :         NS_ASSERTION(bufLen == a.Length(), "buffer is too small");
     104                 :         char_traits::copy(buf, a.Data(), a.Length());
     105                 :       }
     106                 : #endif
     107          902331 :   }
     108                 : 
     109                 : 
     110                 :   /**
     111                 :    * returns true if this tuple is dependent on (i.e., overlapping with)
     112                 :    * the given char sequence.
     113                 :    */
     114                 : 
     115                 : bool
     116          902331 : nsTSubstringTuple_CharT::IsDependentOn( const char_type *start, const char_type *end ) const
     117                 :   {
     118                 :     // we start with the right-most fragment since it is faster to check.
     119                 : 
     120          902331 :     if (TO_SUBSTRING(mFragB).IsDependentOn(start, end))
     121               0 :       return true;
     122                 : 
     123          902331 :     if (mHead)
     124           63278 :       return mHead->IsDependentOn(start, end);
     125                 : 
     126          839053 :     return TO_SUBSTRING(mFragA).IsDependentOn(start, end);
     127                 :   }

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