parser/html/nsHtml5ArrayCopy.h

   1 /*
   2  * Copyright (c) 2008 Mozilla Foundation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  17  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  18  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  19  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  20  * DEALINGS IN THE SOFTWARE.
  21  */
  22
  23 #ifndef nsHtml5ArrayCopy_h__
  24 #define nsHtml5ArrayCopy_h__
  25
  26 #include "prtypes.h"
  27
  28 class nsString;
  29 class nsHtml5StackNode;
  30 class nsHtml5AttributeName;
  31
  32 // Unfortunately, these don't work as template functions because the arguments
  33 // would need coercion from a template class, which complicates things.
  34 class nsHtml5ArrayCopy {
  35   public:
  36
  37     static inline void
  38     arraycopy(PRUnichar* source, PRInt32 sourceOffset, PRUnichar* target, PRInt32 targetOffset, PRInt32 length)
  39     {
  40       memcpy(&(target[targetOffset]), &(source[sourceOffset]), length * sizeof(PRUnichar));
  41     }
  42
  43     static inline void
  44     arraycopy(PRUnichar* source, PRUnichar* target, PRInt32 length)
  45     {
  46       memcpy(target, source, length * sizeof(PRUnichar));
  47     }
  48
  49     static inline void
  50     arraycopy(nsString** source, nsString** target, PRInt32 length)
  51     {
  52       memcpy(target, source, length * sizeof(nsString*));
  53     }
  54
  55     static inline void
  56     arraycopy(nsHtml5AttributeName** source, nsHtml5AttributeName** target, PRInt32 length)
  57     {
  58       memcpy(target, source, length * sizeof(nsHtml5AttributeName*));
  59     }
  60
  61     static inline void
  62     arraycopy(nsHtml5StackNode** source, nsHtml5StackNode** target, PRInt32 length)
  63     {
  64       memcpy(target, source, length * sizeof(nsHtml5StackNode*));
  65     }
  66
  67     static inline void
  68     arraycopy(nsHtml5StackNode** arr, PRInt32 sourceOffset, PRInt32 targetOffset, PRInt32 length)
  69     {
  70       memmove(&(arr[targetOffset]), &(arr[sourceOffset]), length * sizeof(nsHtml5StackNode*));
  71     }
  72 };
  73 #endif // nsHtml5ArrayCopy_h__