| // [The "BSD licence"] |
| // Copyright (c) 2006-2007 Kay Roepke 2010 Alan Condit |
| // 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. |
| |
| |
| #import <Cocoa/Cocoa.h> |
| #import <CoreFoundation/CoreFoundation.h> |
| #import "ANTLRToken.h" |
| |
| #define BITS (sizeof(NSUInteger) * 8) |
| #define LOG_BITS ((sizeof(NSUInteger)==8)?6:5) |
| |
| // A simple wrapper around CoreFoundation bit vectors to shield the rest of the implementation |
| // from the specifics of the BitVector initialization and query functions. |
| // This is fast, so there is no need to reinvent the wheel just yet. |
| |
| @interface ANTLRBitSet : NSObject < NSMutableCopying > { |
| CFMutableBitVectorRef bitVector; |
| } |
| |
| #pragma mark Class Methods |
| |
| + (ANTLRBitSet *) newANTLRBitSet; |
| + (ANTLRBitSet *) newANTLRBitSetWithType:(ANTLRTokenType)type; |
| /** Construct a ANTLRBitSet given the size |
| * @param nbits The size of the ANTLRBitSet in bits |
| */ |
| + (ANTLRBitSet *) newANTLRBitSetWithNBits:(NSUInteger)nbits; |
| + (ANTLRBitSet *) newANTLRBitSetWithArray:(NSMutableArray *)types; |
| + (ANTLRBitSet *) newANTLRBitSetWithBits:(const unsigned long long *)theBits Count:(NSUInteger)longCount; |
| |
| + (ANTLRBitSet *) of:(NSUInteger)el; |
| + (ANTLRBitSet *) of:(NSUInteger)a And2:(NSUInteger)b; |
| + (ANTLRBitSet *) of:(NSUInteger)a And2:(NSUInteger)b And3:(NSUInteger)c; |
| + (ANTLRBitSet *) of:(NSUInteger)a And2:(NSUInteger)b And3:(NSUInteger)c And4:(NSUInteger)d; |
| |
| #pragma mark Initializer |
| |
| - (ANTLRBitSet *) init; |
| - (ANTLRBitSet *) initWithType:(ANTLRTokenType)type; |
| - (ANTLRBitSet *) initWithNBits:(NSUInteger)nbits; |
| - (ANTLRBitSet *) initWithBitVector:(CFMutableBitVectorRef)theBitVector; |
| - (ANTLRBitSet *) initWithBits:(const unsigned long long const*)theBits Count:(NSUInteger)theCount; |
| - (ANTLRBitSet *) initWithArrayOfBits:(NSArray *)theArray; |
| |
| #pragma mark Operations |
| - (ANTLRBitSet *) or:(ANTLRBitSet *) aBitSet; |
| - (void) orInPlace:(ANTLRBitSet *) aBitSet; |
| - (void) add:(NSUInteger) bit; |
| - (void) remove:(NSUInteger) bit; |
| - (void) setAllBits:(BOOL) aState; |
| |
| - (NSInteger) numBits; |
| - (NSUInteger) size; |
| - (void) setSize:(NSUInteger) noOfWords; |
| |
| #pragma mark Informational |
| - (unsigned long long) bitMask:(NSUInteger) bitNumber; |
| - (BOOL) member:(NSUInteger)bitNumber; |
| - (BOOL) isNil; |
| - (NSString *) toString; |
| - (NSString *) description; |
| |
| #pragma mark NSCopying support |
| |
| - (id) mutableCopyWithZone:(NSZone *) theZone; |
| |
| |
| //private |
| - (CFMutableBitVectorRef) _bitVector; |
| @end |
