Fixed whitespace in all files (no tabs)

[senf.git] / Utils / SafeBool.hh

diff --git a/Utils/SafeBool.hh b/Utils/SafeBool.hh
index 68b0ffc..0b944bc 100644 (file)
--- a/Utils/SafeBool.hh
+++ b/Utils/SafeBool.hh
@@ -1,6 +1,6 @@
 // $Id$
 //
-// Copyright (C) 2006 
+// Copyright (C) 2006
 
 #ifndef HH_SafeBool_
 #define HH_SafeBool_ 1
@@ -13,87 +13,87 @@
 namespace senf {
 
     /** \brief internal SafeBool base class
-       \internal
+        \internal
      */
-    class SafeBoolBase 
+    class SafeBoolBase
     {
     protected:
-       typedef void (SafeBoolBase::*bool_type)() const;
-       void this_type_does_not_support_comparisons() const;
+        typedef void (SafeBoolBase::*bool_type)() const;
+        void this_type_does_not_support_comparisons() const;
 
-       // Just here to make them protected ...
+        // Just here to make them protected ...
 
-       SafeBoolBase();
-       SafeBoolBase(const SafeBoolBase&);
-       SafeBoolBase& operator=(const SafeBoolBase&);
-       ~SafeBoolBase();
+        SafeBoolBase();
+        SafeBoolBase(const SafeBoolBase&);
+        SafeBoolBase& operator=(const SafeBoolBase&);
+        ~SafeBoolBase();
     };
 
     /** \brief Mixin class for safe boolean conversion support
-       
-       This is a direct yet simplified copy of a safe bool solution
-       by Bjorn Karlsson from
-       http://www.artima.com/cppsource/safebool.html
-
-       This mixin provides the client class with safe boolean
-       testing. It is a safe replacement for <tt>operator
-       bool</tt>. <tt>operator bool</tt> is problematic since \c bool
-       is an integer type. This conversion operator makes the class
-       usable in any numeric context, which can be quite
-       dangerous. The <tt>operator void *</tt> solution is much
-       better in this respect but still allows two instances of any
-       class having such a <tt>void *</tt> conversion to be compared
-       for equality. This again will produce absolutely unexpected
-       results since it will not check wethere the objects are
-       identical, it will only check, that both return the same
-       boolean state.
-
-       This solutions solves all these problems by returning a
-       pointer-to-member which cannot be converted to any other
-       type. By providing explicit implementations of \c operator==
-       and \c operator!= which fail in an obvious way at compile
-       time, this hazard is removed.
-
-       To make a class boolean testable, just inherit from the mixin
-       and implement \c boolean_test:
-       
-       \code
-        class Testable 
-            : public SafeBool<Testable> 
+
+        This is a direct yet simplified copy of a safe bool solution
+        by Bjorn Karlsson from
+        http://www.artima.com/cppsource/safebool.html
+
+        This mixin provides the client class with safe boolean
+        testing. It is a safe replacement for <tt>operator
+        bool</tt>. <tt>operator bool</tt> is problematic since \c bool
+        is an integer type. This conversion operator makes the class
+        usable in any numeric context, which can be quite
+        dangerous. The <tt>operator void *</tt> solution is much
+        better in this respect but still allows two instances of any
+        class having such a <tt>void *</tt> conversion to be compared
+        for equality. This again will produce absolutely unexpected
+        results since it will not check wethere the objects are
+        identical, it will only check, that both return the same
+        boolean state.
+
+        This solutions solves all these problems by returning a
+        pointer-to-member which cannot be converted to any other
+        type. By providing explicit implementations of \c operator==
+        and \c operator!= which fail in an obvious way at compile
+        time, this hazard is removed.
+
+        To make a class boolean testable, just inherit from the mixin
+        and implement \c boolean_test:
+
+        \code
+        class Testable
+            : public SafeBool<Testable>
         {
         public:
-            bool boolean_test() const 
+            bool boolean_test() const
             {
                 // Perform Boolean logic here
             }
         };
 
-       Testable t = ...;
+        Testable t = ...;
 
-       if (t) {
-          ...
-       }
-       \endcode
+        if (t) {
+           ...
+        }
+        \endcode
 
-       \todo Either rename intrusive_refcount to IntrusiveRefcount or
-       SafeBool to safe_bool (I tend to the latter ...)
+        \todo Either rename intrusive_refcount to IntrusiveRefcount or
+        SafeBool to safe_bool (I tend to the latter ...)
      */
-    template <typename T> 
-    class SafeBool 
-       : public SafeBoolBase 
+    template <typename T>
+    class SafeBool
+        : public SafeBoolBase
     {
     public:
-       operator bool_type() const;
-       bool operator !() const;
+        operator bool_type() const;
+        bool operator !() const;
 
     protected:
-       ~SafeBool();
+        ~SafeBool();
     };
 
-    template <typename T, typename U> 
+    template <typename T, typename U>
     void operator==(const SafeBool<T>& lhs,const SafeBool<U>& rhs);
 
-    template <typename T,typename U> 
+    template <typename T,typename U>
     void operator!=(const SafeBool<T>& lhs,const SafeBool<U>& rhs);
 
 }
@@ -108,4 +108,8 @@ namespace senf {
 \f
 // Local Variables:
 // mode: c++
+// fill-column: 100
+// c-file-style: "senf"
+// indent-tabs-mode: nil
+// ispell-local-dictionary: "american"
 // End: