mirror of
https://github.com/sqlitebrowser/sqlitebrowser.git
synced 2026-02-11 14:18:38 -06:00
61 lines
1.8 KiB
C++
61 lines
1.8 KiB
C++
#ifndef INC_BitSet_hpp__
|
|
#define INC_BitSet_hpp__
|
|
|
|
/* ANTLR Translator Generator
|
|
* Project led by Terence Parr at http://www.jGuru.com
|
|
* Software rights: http://www.antlr.org/license.html
|
|
*
|
|
* $Id: //depot/code/org.antlr/release/antlr-2.7.7/lib/cpp/antlr/BitSet.hpp#2 $
|
|
*/
|
|
|
|
#include <antlr/config.hpp>
|
|
#include <vector>
|
|
#include <stdexcept>
|
|
|
|
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
|
|
namespace antlr {
|
|
#endif
|
|
|
|
/** A BitSet to replace java.util.BitSet.
|
|
* Primary differences are that most set operators return new sets
|
|
* as opposed to oring and anding "in place". Further, a number of
|
|
* operations were added. I cannot contain a BitSet because there
|
|
* is no way to access the internal bits (which I need for speed)
|
|
* and, because it is final, I cannot subclass to add functionality.
|
|
* Consider defining set degree. Without access to the bits, I must
|
|
* call a method n times to test the ith bit...ack!
|
|
*
|
|
* Also seems like or() from util is wrong when size of incoming set is bigger
|
|
* than this.length.
|
|
*
|
|
* This is a C++ version of the Java class described above, with only
|
|
* a handful of the methods implemented, because we don't need the
|
|
* others at runtime. It's really just a wrapper around vector<bool>,
|
|
* which should probably be changed to a wrapper around bitset, once
|
|
* bitset is more widely available.
|
|
*
|
|
* @author Terence Parr, MageLang Institute
|
|
* @author <br><a href="mailto:pete@yamuna.demon.co.uk">Pete Wells</a>
|
|
*/
|
|
class ANTLR_API BitSet {
|
|
private:
|
|
ANTLR_USE_NAMESPACE(std)vector<bool> storage;
|
|
|
|
public:
|
|
BitSet( unsigned int nbits=64 );
|
|
BitSet( const unsigned long* bits_, unsigned int nlongs);
|
|
~BitSet();
|
|
|
|
void add( unsigned int el );
|
|
|
|
bool member( unsigned int el ) const;
|
|
|
|
ANTLR_USE_NAMESPACE(std)vector<unsigned int> toArray() const;
|
|
};
|
|
|
|
#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE
|
|
}
|
|
#endif
|
|
|
|
#endif //INC_BitSet_hpp__
|