Adding a new file. Part of the fix for Bug #39686.

git-svn-id: svn://10.0.0.236/trunk@70559 18797224-902f-48f8-a5cc-f745e15eee43

mozilla/string/public/nsAlgorithm.h

@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Original Author:
+ *   Scott Collins <scc@mozilla.org>
+ *
+ * Contributor(s):
+ */
+
+#ifndef nsAlgorithm_h___
+#define nsAlgorithm_h___
+
+#ifndef prtypes_h___
+#include "prtypes.h"
+  // for |PRUint32|...
+#endif
+
+template <class T>
+inline
+const T&
+NS_MIN( const T& a, const T& b )
+  {
+    return b < a ? b : a;
+  }
+
+template <class T>
+inline
+const T&
+NS_MAX( const T& a, const T& b )
+  {
+    return a > b ? a : b;
+  }
+
+template <class InputIterator, class T>
+inline
+PRUint32
+NS_COUNT( InputIterator first, InputIterator last, const T& value )
+  {
+    PRUint32 result = 0;
+    for ( ; first != last; ++first )
+      if ( *first == value )
+        ++result;
+    return result;
+  }
+
+template <class InputIterator, class OutputIterator>
+inline
+OutputIterator
+copy_string( InputIterator first, InputIterator last, OutputIterator result )
+  {
+    typedef nsCharSourceTraits<InputIterator> source_traits;
+    typedef nsCharSinkTraits<OutputIterator>  sink_traits;
+
+    while ( first != last )
+      {
+        PRInt32 count_copied = PRInt32(sink_traits::write(result, source_traits::read(first), source_traits::readable_distance(first, last)));
+        NS_ASSERTION(count_copied > 0, "|copy_string| will never terminate");
+        first += count_copied;
+      }
+
+    return result;
+  }
+
+template <class InputIterator, class OutputIterator>
+OutputIterator
+copy_string_backward( InputIterator first, InputIterator last, OutputIterator result )
+  {
+    while ( first != last )
+      {
+        PRUint32 lengthToCopy = PRUint32( NS_MIN(last.size_backward(), result.size_backward()) );
+        if ( first.fragment().mStart == last.fragment().mStart )
+          lengthToCopy = NS_MIN(lengthToCopy, PRUint32(last.operator->() - first.operator->()));
+
+        NS_ASSERTION(lengthToCopy, "|copy_string_backward| will never terminate");
+
+#ifdef _MSC_VER
+        // XXX Visual C++ can't stomach 'typename' where it rightfully should
+        nsCharTraits<OutputIterator::value_type>::move(result.operator->()-lengthToCopy, last.operator->()-lengthToCopy, lengthToCopy);
+#else
+        nsCharTraits<typename OutputIterator::value_type>::move(result.operator->()-lengthToCopy, last.operator->()-lengthToCopy, lengthToCopy);
+#endif
+
+        last -= PRInt32(lengthToCopy);
+        result -= PRInt32(lengthToCopy);
+      }
+
+    return result;
+  }
+
+
+#endif // !defined(nsAlgorithm_h___)

mozilla/xpcom/ds/nsAlgorithm.h

@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Original Author:
+ *   Scott Collins <scc@mozilla.org>
+ *
+ * Contributor(s):
+ */
+
+#ifndef nsAlgorithm_h___
+#define nsAlgorithm_h___
+
+#ifndef prtypes_h___
+#include "prtypes.h"
+  // for |PRUint32|...
+#endif
+
+template <class T>
+inline
+const T&
+NS_MIN( const T& a, const T& b )
+  {
+    return b < a ? b : a;
+  }
+
+template <class T>
+inline
+const T&
+NS_MAX( const T& a, const T& b )
+  {
+    return a > b ? a : b;
+  }
+
+template <class InputIterator, class T>
+inline
+PRUint32
+NS_COUNT( InputIterator first, InputIterator last, const T& value )
+  {
+    PRUint32 result = 0;
+    for ( ; first != last; ++first )
+      if ( *first == value )
+        ++result;
+    return result;
+  }
+
+template <class InputIterator, class OutputIterator>
+inline
+OutputIterator
+copy_string( InputIterator first, InputIterator last, OutputIterator result )
+  {
+    typedef nsCharSourceTraits<InputIterator> source_traits;
+    typedef nsCharSinkTraits<OutputIterator>  sink_traits;
+
+    while ( first != last )
+      {
+        PRInt32 count_copied = PRInt32(sink_traits::write(result, source_traits::read(first), source_traits::readable_distance(first, last)));
+        NS_ASSERTION(count_copied > 0, "|copy_string| will never terminate");
+        first += count_copied;
+      }
+
+    return result;
+  }
+
+template <class InputIterator, class OutputIterator>
+OutputIterator
+copy_string_backward( InputIterator first, InputIterator last, OutputIterator result )
+  {
+    while ( first != last )
+      {
+        PRUint32 lengthToCopy = PRUint32( NS_MIN(last.size_backward(), result.size_backward()) );
+        if ( first.fragment().mStart == last.fragment().mStart )
+          lengthToCopy = NS_MIN(lengthToCopy, PRUint32(last.operator->() - first.operator->()));
+
+        NS_ASSERTION(lengthToCopy, "|copy_string_backward| will never terminate");
+
+#ifdef _MSC_VER
+        // XXX Visual C++ can't stomach 'typename' where it rightfully should
+        nsCharTraits<OutputIterator::value_type>::move(result.operator->()-lengthToCopy, last.operator->()-lengthToCopy, lengthToCopy);
+#else
+        nsCharTraits<typename OutputIterator::value_type>::move(result.operator->()-lengthToCopy, last.operator->()-lengthToCopy, lengthToCopy);
+#endif
+
+        last -= PRInt32(lengthToCopy);
+        result -= PRInt32(lengthToCopy);
+      }
+
+    return result;
+  }
+
+
+#endif // !defined(nsAlgorithm_h___)

mozilla/xpcom/string/public/nsAlgorithm.h

@@ -0,0 +1,107 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/*
+ * The contents of this file are subject to the Netscape Public
+ * License Version 1.1 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.mozilla.org/NPL/
+ *
+ * Software distributed under the License is distributed on an "AS
+ * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
+ * implied. See the License for the specific language governing
+ * rights and limitations under the License.
+ *
+ * The Original Code is mozilla.org code.
+ *
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation.  Portions created by Netscape are
+ * Copyright (C) 1998 Netscape Communications Corporation. All
+ * Rights Reserved.
+ *
+ * Original Author:
+ *   Scott Collins <scc@mozilla.org>
+ *
+ * Contributor(s):
+ */
+
+#ifndef nsAlgorithm_h___
+#define nsAlgorithm_h___
+
+#ifndef prtypes_h___
+#include "prtypes.h"
+  // for |PRUint32|...
+#endif
+
+template <class T>
+inline
+const T&
+NS_MIN( const T& a, const T& b )
+  {
+    return b < a ? b : a;
+  }
+
+template <class T>
+inline
+const T&
+NS_MAX( const T& a, const T& b )
+  {
+    return a > b ? a : b;
+  }
+
+template <class InputIterator, class T>
+inline
+PRUint32
+NS_COUNT( InputIterator first, InputIterator last, const T& value )
+  {
+    PRUint32 result = 0;
+    for ( ; first != last; ++first )
+      if ( *first == value )
+        ++result;
+    return result;
+  }
+
+template <class InputIterator, class OutputIterator>
+inline
+OutputIterator
+copy_string( InputIterator first, InputIterator last, OutputIterator result )
+  {
+    typedef nsCharSourceTraits<InputIterator> source_traits;
+    typedef nsCharSinkTraits<OutputIterator>  sink_traits;
+
+    while ( first != last )
+      {
+        PRInt32 count_copied = PRInt32(sink_traits::write(result, source_traits::read(first), source_traits::readable_distance(first, last)));
+        NS_ASSERTION(count_copied > 0, "|copy_string| will never terminate");
+        first += count_copied;
+      }
+
+    return result;
+  }
+
+template <class InputIterator, class OutputIterator>
+OutputIterator
+copy_string_backward( InputIterator first, InputIterator last, OutputIterator result )
+  {
+    while ( first != last )
+      {
+        PRUint32 lengthToCopy = PRUint32( NS_MIN(last.size_backward(), result.size_backward()) );
+        if ( first.fragment().mStart == last.fragment().mStart )
+          lengthToCopy = NS_MIN(lengthToCopy, PRUint32(last.operator->() - first.operator->()));
+
+        NS_ASSERTION(lengthToCopy, "|copy_string_backward| will never terminate");
+
+#ifdef _MSC_VER
+        // XXX Visual C++ can't stomach 'typename' where it rightfully should
+        nsCharTraits<OutputIterator::value_type>::move(result.operator->()-lengthToCopy, last.operator->()-lengthToCopy, lengthToCopy);
+#else
+        nsCharTraits<typename OutputIterator::value_type>::move(result.operator->()-lengthToCopy, last.operator->()-lengthToCopy, lengthToCopy);
+#endif
+
+        last -= PRInt32(lengthToCopy);
+        result -= PRInt32(lengthToCopy);
+      }
+
+    return result;
+  }
+
+
+#endif // !defined(nsAlgorithm_h___)