flags extension

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@23146 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Stefan Csomor
2003-08-23 22:37:11 +00:00
parent 54eba47d04
commit 0886e25499
2 changed files with 104 additions and 34 deletions

View File

@@ -16,36 +16,34 @@
#pragma interface "flags.h"
#endif
#include <bitset>
// 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
// The api is made as close as possible to <bitset>
template <class T> class wxFlags
template <class T> class wxBitset
{
friend class wxEnumData ;
public:
// creates a wxFlags<> object with all flags initialized to 0
wxFlags() { m_data = 0; }
// creates a wxBitset<> object with all flags initialized to 0
wxBitset() { m_data = 0; }
// created a wxFlags<> object initialized according to the bits of the
// created a wxBitset<> object initialized according to the bits of the
// integral value val
wxFlags(unsigned long val) { m_data = val ; }
wxBitset(unsigned long val) { m_data = val ; }
// copies the content in the new wxFlags<> object from another one
wxFlags(const wxFlags &src) { m_data = src.m_data; }
// copies the content in the new wxBitset<> object from another one
wxBitset(const wxBitset &src) { m_data = src.m_data; }
// creates a wxFlags<> object that has the specific flag set
wxFlags(const T el) { m_data |= 1 << el; }
// creates a wxBitset<> object that has the specific flag set
wxBitset(const T el) { m_data |= 1 << el; }
// returns the integral value that the bits of this object represent
unsigned long to_ulong() const { return m_data ; }
// assignment
wxFlags &operator =(const wxFlags &rhs)
wxBitset &operator =(const wxBitset &rhs)
{
m_data = rhs.m_data;
return *this;
@@ -53,7 +51,7 @@ public:
// bitwise or operator, sets all bits that are in rhs and leaves
// the rest unchanged
wxFlags &operator |=(const wxFlags &rhs)
wxBitset &operator |=(const wxBitset &rhs)
{
m_data |= rhs.m_data;
return *this;
@@ -61,7 +59,7 @@ public:
// bitwsie exclusive-or operator, toggles the value of all bits
// that are set in bits and leaves all others unchanged
wxFlags &operator ^=(const wxFlags &rhs) // difference
wxBitset &operator ^=(const wxBitset &rhs) // difference
{
m_data ^= rhs.m_data;
return *this;
@@ -69,7 +67,7 @@ public:
// bitwise and operator, resets all bits that are not in rhs and leaves
// all others unchanged
wxFlags &operator &=(const wxFlags &rhs) // intersection
wxBitset &operator &=(const wxBitset &rhs) // intersection
{
m_data &= rhs.m_data;
return *this;
@@ -77,47 +75,47 @@ public:
// bitwise or operator, returns a new bitset that has all bits set that set are in
// bitset2 or in this bitset
wxFlags operator |(const wxFlags &bitset2) const // union
wxBitset operator |(const wxBitset &bitset2) const // union
{
wxFlags<T> s;
wxBitset<T> s;
s.m_data = m_data | bitset2.m_data;
return s;
}
// 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
wxFlags operator ^(const wxFlags &bitset2) const // difference
wxBitset operator ^(const wxBitset &bitset2) const // difference
{
wxFlags<T> s;
wxBitset<T> s;
s.m_data = m_data ^ bitset2.m_data;
return s;
}
// bitwise and operator, returns a new bitset that has all bits set that are set both in
// bitset2 and in this bitset
wxFlags operator &(const wxFlags &bitset2) const // intersection
wxBitset operator &(const wxBitset &bitset2) const // intersection
{
wxFlags<T> s;
wxBitset<T> s;
s.m_data = m_data & bitset2.m_data;
return s;
}
// sets appropriate the bit to true
wxFlags& set(const T el) //Add element
wxBitset& set(const T el) //Add element
{
m_data |= 1 << el;
return *this;
}
// clears the appropriate flag to false
wxFlags& reset(const T el) //remove element
wxBitset& reset(const T el) //remove element
{
m_data &= ~(1 << el);
return *this;
}
// clear all flags
wxFlags& reset()
wxBitset& reset()
{
m_data = 0;
return *this;
@@ -142,13 +140,13 @@ public:
}
// true if both have the same flags
bool operator ==(const wxFlags &rhs) const
bool operator ==(const wxBitset &rhs) const
{
return m_data == rhs.m_data;
}
// true if both differ in their flags set
bool operator !=(const wxFlags &rhs) const
bool operator !=(const wxBitset &rhs) const
{
return !operator==(rhs);
}
@@ -159,5 +157,11 @@ private :
unsigned long m_data;
};
#define WX_DEFINE_FLAGS( flags ) \
struct flags \
{\
flags(long data=0) :m_data(data) {} \
long m_data ;\
} ;
#endif