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tim |
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/* ANTLR Translator Generator |
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* Project led by Terence Parr at http://www.jGuru.com |
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* Software rights: http://www.antlr.org/license.html |
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* |
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* $Id: BitSet.cpp,v 1.1 2005-12-02 15:38:02 tim Exp $ |
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*/ |
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#include "antlr/BitSet.hpp" |
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#include <string> |
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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namespace antlr { |
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#endif |
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BitSet::BitSet(unsigned int nbits) |
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: storage(nbits) |
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{ |
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for (unsigned int i = 0; i < nbits ; i++ ) |
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storage[i] = false; |
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} |
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BitSet::BitSet( const unsigned long* bits_, unsigned int nlongs ) |
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: storage(nlongs*32) |
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{ |
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for ( unsigned int i = 0 ; i < (nlongs * 32); i++) |
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storage[i] = (bits_[i>>5] & (1UL << (i&31))) ? true : false; |
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} |
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BitSet::~BitSet() |
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{ |
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} |
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void BitSet::add(unsigned int el) |
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{ |
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if( el >= storage.size() ) |
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storage.resize( el+1, false ); |
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storage[el] = true; |
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} |
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bool BitSet::member(unsigned int el) const |
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{ |
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if ( el >= storage.size()) |
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return false; |
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return storage[el]; |
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} |
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ANTLR_USE_NAMESPACE(std)vector<unsigned int> BitSet::toArray() const |
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{ |
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ANTLR_USE_NAMESPACE(std)vector<unsigned int> elems; |
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for (unsigned int i = 0; i < storage.size(); i++) |
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{ |
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if (storage[i]) |
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elems.push_back(i); |
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} |
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return elems; |
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} |
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#ifdef ANTLR_CXX_SUPPORTS_NAMESPACE |
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} |
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#endif |
