Fixed initialisation order warning

[wxWidgets.git] / include / wx / flags.h

diff --git a/include/wx/flags.h b/include/wx/flags.h
index ec14d2c2b936ad3b6e53f3a918b60400ccdf58ab..6f9c00a841544299ffc7d8d1bc40f2e9f5a427fb 100644 (file)
--- a/include/wx/flags.h
+++ b/include/wx/flags.h
@@ -1,8 +1,8 @@
 /////////////////////////////////////////////////////////////////////////////
 // Name:        wx/flags.h
 /////////////////////////////////////////////////////////////////////////////
 // Name:        wx/flags.h

-// Purpose:     a bitset suited for replacing the current style flags 
+// Purpose:     a bitset suited for replacing the current style flags

 // Author:      Stefan Csomor
 // Author:      Stefan Csomor

-// Modified by: 
+// Modified by:

 // Created:     27/07/03
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 Stefan Csomor
 // Created:     27/07/03
 // RCS-ID:      $Id$
 // Copyright:   (c) 2003 Stefan Csomor


@@ -12,106 +12,154 @@
 #ifndef _WX_SETH__
 #define _WX_SETH__
 
 #ifndef _WX_SETH__
 #define _WX_SETH__
 

-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
-#pragma interface "flags.h"
-#endif
-
-// wxFlags should be applied to an enum, then this can be used like
+// wxBitset should be applied to an enum, then this can be used like

 // bitwise operators but keeps the type safety and information, the
 // enums must be in a sequence , their value determines the bit position
 // that they represent
 // bitwise operators but keeps the type safety and information, the
 // enums must be in a sequence , their value determines the bit position
 // that they represent

+// The api is made as close as possible to <bitset>

 
 

-template <class T> class wxFlags
+template <class T> class wxBitset

 {
 {

-       friend class wxEnumData ;
+    friend class wxEnumData ;

 public:
 public:

-    wxFlags(long val) { m_data = val ; }
-    wxFlags() { m_data = 0; }
-    wxFlags(const wxFlags &src) { m_data = src.m_data; }
-    wxFlags(const T el) { m_data |= 1 << el; }
+    // creates a wxBitset<> object with all flags initialized to 0
+    wxBitset() { m_data = 0; }
+
+    // created a wxBitset<> object initialized according to the bits of the
+    // integral value val
+    wxBitset(unsigned long val) { m_data = val ; }
+
+    // copies the content in the new wxBitset<> object from another one
+    wxBitset(const wxBitset &src) { m_data = src.m_data; }

 
 

-    operator long() const { return m_data ; }
+    // creates a wxBitset<> object that has the specific flag set
+    wxBitset(const T el) { m_data |= 1 << el; }

 
 

-    wxFlags &operator =(const wxFlags &rhs)
+    // returns the integral value that the bits of this object represent
+    unsigned long to_ulong() const { return m_data ; }
+
+    // assignment
+    wxBitset &operator =(const wxBitset &rhs)

     {
     {

-               m_data = rhs.m_data;
-               return *this;
+        m_data = rhs.m_data;
+        return *this;

     }
     }

-    wxFlags &operator +=(const wxFlags &rhs) // union
+
+    // bitwise or operator, sets all bits that are in rhs and leaves
+    // the rest unchanged
+    wxBitset &operator |=(const wxBitset &rhs)

     {
     {

-               m_data |= rhs.m_data;
-               return *this;
+        m_data |= rhs.m_data;
+        return *this;

     }
     }

-    wxFlags &operator -=(const wxFlags &rhs) // difference
+
+    // bitwsie exclusive-or operator, toggles the value of all bits
+    // that are set in bits and leaves all others unchanged
+    wxBitset &operator ^=(const wxBitset &rhs) // difference

     {
     {

-               m_data ^= rhs.m_data;
-               return *this;
+        m_data ^= rhs.m_data;
+        return *this;

     }
 
     }
 

-    wxFlags &operator *=(const wxFlags &rhs) // intersection
+    // bitwise and operator, resets all bits that are not in rhs and leaves
+    // all others unchanged
+    wxBitset &operator &=(const wxBitset &rhs) // intersection

     {
     {

-               m_data &= rhs.m_data;
-               return *this;
+        m_data &= rhs.m_data;
+        return *this;

     }
 
     }
 

-    wxFlags operator +(const wxFlags &rhs) const // union
+    // bitwise or operator, returns a new bitset that has all bits set that set are in
+    // bitset2 or in this bitset
+    wxBitset operator |(const wxBitset &bitset2) const // union

     {
     {

-               wxFlags<T> s;
-               s.m_data = m_data | rhs.m_data;
-               return s;
+        wxBitset<T> s;
+        s.m_data = m_data | bitset2.m_data;
+        return s;

     }
     }

-    wxFlags operator -(const wxFlags &rhs) const // difference
+
+    // bitwise exclusive-or operator, returns a new bitset that has all bits set that are set either in
+    // bitset2 or in this bitset but not in both
+    wxBitset operator ^(const wxBitset &bitset2) const // difference

     {
     {

-               wxFlags<T> s;
-               s.m_data = m_data ^ rhs.m_data;
-               return s;
+        wxBitset<T> s;
+        s.m_data = m_data ^ bitset2.m_data;
+        return s;

     }
     }

-    wxFlags operator *(const wxFlags &rhs) const // intersection
+
+    // bitwise and operator, returns a new bitset that has all bits set that are set both in
+    // bitset2 and in this bitset
+    wxBitset operator &(const wxBitset &bitset2) const // intersection

     {
     {

-               wxFlags<T> s;
-               s.m_data = m_data & rhs.m_data;
-               return s;
+        wxBitset<T> s;
+        s.m_data = m_data & bitset2.m_data;
+        return s;

     }
 
     }
 

-    wxFlags& Set(const T el) //Add element
+    // sets appropriate the bit to true
+    wxBitset& set(const T el) //Add element

     {
     {

-               m_data |= 1 << el;
-               return *this;
+        m_data |= 1 << el;
+        return *this;

     }
     }

-    wxFlags& Clear(const T el) //remove element
+
+    // clears the appropriate flag to false
+    wxBitset& reset(const T el) //remove element

     {
     {

-               m_data &= ~(1 << el);
-               return *this;
+        m_data &= ~(1 << el);
+        return *this;

     }
 
     }
 

-    bool Contains(const T el) const
+    // clear all flags
+    wxBitset& reset()

     {
     {

-               return (m_data & (1 << el)) ? true : false;
+        m_data = 0;
+        return *this;

     }
 
     }
 

-    wxFlags &Clear()
+    // true if this flag is set
+    bool test(const T el) const

     {
     {

-               m_data = 0;
-               return *this;
+        return (m_data & (1 << el)) ? true : false;

     }
 
     }
 

-    bool Empty() const
+    // true if no flag is set
+    bool none() const

     {
     {

-               return m_data == 0;
+        return m_data == 0;

     }
 
     }
 

-    bool operator ==(const wxFlags &rhs) const
+    // true if any flag is set
+    bool any() const

     {
     {

-               return m_data == rhs.m_data;
+        return m_data != 0;

     }
 
     }
 

-    bool operator !=(const wxFlags &rhs) const
+    // true if both have the same flags
+    bool operator ==(const wxBitset &rhs) const

     {
     {

-               return !operator==(rhs);
+        return m_data == rhs.m_data;

     }
     }

+
+    // true if both differ in their flags set
+    bool operator !=(const wxBitset &rhs) const
+    {
+        return !operator==(rhs);
+    }
+
+    bool operator[] (const T el) const { return test(el) ; }
+

 private :
 private :

-       int m_data;
+    unsigned long m_data;

 };
 
 };
 

+#define WX_DEFINE_FLAGS( flags ) \
+    class WXDLLEXPORT flags \
+    {\
+    public : \
+        flags(long data=0) :m_data(data) {} \
+        long m_data ;\
+        bool operator ==(const flags &rhs) const { return m_data == rhs.m_data; }\
+    } ;

 
 #endif
 
 #endif