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/**
* \file
* Defines the basic structures of an ANTLR3 bitset. this is a C version of the
* cut down Bitset class provided with the java version of antlr 3.
*
*
*/
#ifndef _ANTLR3_BITSET_H
#define _ANTLR3_BITSET_H
// [The "BSD licence"]
// Copyright (c) 2005-2009 Jim Idle, Temporal Wave LLC
// http://www.temporal-wave.com
// http://www.linkedin.com/in/jimidle
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. The name of the author may not be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
// IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
// OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
// IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
// NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
// THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include <antlr3defs.h>
#include <antlr3collections.h>
/** How many bits in the elements
*/
#define ANTLR3_BITSET_BITS 64
/** How many bits in a nible of bits
*/
#define ANTLR3_BITSET_NIBBLE 4
/** log2 of ANTLR3_BITSET_BITS 2^ANTLR3_BITSET_LOG_BITS = ANTLR3_BITSET_BITS
*/
#define ANTLR3_BITSET_LOG_BITS 6
/** We will often need to do a mod operator (i mod nbits).
* For powers of two, this mod operation is the
* same as:
* - (i & (nbits-1)).
*
* Since mod is relatively slow, we use an easily
* precomputed mod mask to do the mod instead.
*/
#define ANTLR3_BITSET_MOD_MASK ANTLR3_BITSET_BITS - 1
#ifdef __cplusplus
extern "C" {
#endif
typedef struct ANTLR3_BITSET_LIST_struct
{
/// Pointer to the allocated array of bits for this bit set, which
/// is an array of 64 bit elements (of the architecture). If we find a
/// machine/C compiler that does not know anything about 64 bit values
/// then it should be easy enough to produce a 32 bit (or less) version
/// of the bitset code. Note that the pointer here may be static if laid down
/// by the code generation, and it must be copied if it is to be manipulated
/// to perform followset calculations.
///
pANTLR3_BITWORD bits;
/// Length of the current bit set in ANTLR3_UINT64 units.
///
ANTLR3_UINT32 length;
}
ANTLR3_BITSET_LIST;
typedef struct ANTLR3_BITSET_struct
{
/// The actual bits themselves
///
ANTLR3_BITSET_LIST blist;
pANTLR3_BITSET (*clone) (struct ANTLR3_BITSET_struct * inSet);
pANTLR3_BITSET (*bor) (struct ANTLR3_BITSET_struct * bitset1, struct ANTLR3_BITSET_struct * bitset2);
void (*borInPlace) (struct ANTLR3_BITSET_struct * bitset, struct ANTLR3_BITSET_struct * bitset2);
ANTLR3_UINT32 (*size) (struct ANTLR3_BITSET_struct * bitset);
void (*add) (struct ANTLR3_BITSET_struct * bitset, ANTLR3_INT32 bit);
void (*grow) (struct ANTLR3_BITSET_struct * bitset, ANTLR3_INT32 newSize);
ANTLR3_BOOLEAN (*equals) (struct ANTLR3_BITSET_struct * bitset1, struct ANTLR3_BITSET_struct * bitset2);
ANTLR3_BOOLEAN (*isMember) (struct ANTLR3_BITSET_struct * bitset, ANTLR3_UINT32 bit);
ANTLR3_UINT32 (*numBits) (struct ANTLR3_BITSET_struct * bitset);
void (*remove) (struct ANTLR3_BITSET_struct * bitset, ANTLR3_UINT32 bit);
ANTLR3_BOOLEAN (*isNilNode) (struct ANTLR3_BITSET_struct * bitset);
pANTLR3_INT32 (*toIntList) (struct ANTLR3_BITSET_struct * bitset);
void (*free) (struct ANTLR3_BITSET_struct * bitset);
}
ANTLR3_BITSET;
#ifdef __cplusplus
}
#endif
#endif
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