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#ifndef LPC_STRINGSET_H1106061353_INCLUDE_GUARD_
#define LPC_STRINGSET_H1106061353_INCLUDE_GUARD_
/* This file is part of indexlib.
* Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org>
*
* Indexlib is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation and available as file
* GPL_V2 which is distributed along with indexlib.
*
* Indexlib is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301, USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this program with any edition of
* the Qt library by Trolltech AS, Norway (or with modified versions
* of Qt that use the same license as Qt), and distribute linked
* combinations including the two. You must obey the GNU General
* Public License in all respects for all of the code used other than
* Qt. If you modify this file, you may extend this exception to
* your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from
* your version.
*/
#include "memvector.h"
#include "stringarray.h"
#include <iterator>
#include <iostream>
#include <utility>
struct stringset {
public:
struct const_iterator : public std::iterator<STD_NAMESPACE_PREFIX random_access_iterator_tag,const char*> {
const char* operator*() const {
return mother_->strings_.get_cstr( mother_->ordered_[ idx_ ] );
}
unsigned id() const {
return mother_->ordered_[ idx_ ];
}
unsigned order() const {
return idx_;
}
const_iterator& operator ++() {
++idx_;
return *this;
}
const_iterator& operator --() {
--idx_;
return *this;
}
const_iterator& operator +=( ptrdiff_t d ) {
idx_ += d;
return *this;
}
const_iterator& operator -=( ptrdiff_t d ) {
idx_ -= d;
return *this;
}
const_iterator& operator = ( const const_iterator& other ) {
mother_ = other.mother_;
idx_ = other.idx_;
return *this;
}
ptrdiff_t operator - ( const const_iterator& other ) const {
assert( mother_ == other.mother_ );
return idx_ - other.idx_;
}
bool operator < ( const const_iterator& other ) const {
assert( mother_ == other.mother_ );
return idx_ < other.idx_;
}
bool operator == ( const const_iterator& other ) const {
return mother_ == other.mother_ && idx_ == other.idx_;
}
bool operator != ( const const_iterator& other ) const {
return !( *this == other );
}
const_iterator():
mother_( 0 ),
idx_( 0 )
{
}
const_iterator( const const_iterator& other ):
mother_( other.mother_ ),
idx_( other.idx_ )
{
}
private:
friend std::ostream& operator << ( std::ostream& out, const const_iterator& other );
friend class stringset;
const_iterator( const stringset* m, unsigned i ):
mother_( m ),
idx_( i )
{
}
const stringset* mother_;
unsigned idx_;
};
friend class const_iterator;
public:
stringset( std::string );
bool count( const char* str ) const { return order_of( str ) != unsigned( -1 ); }
unsigned id_of( const char* str ) const {
unsigned order = order_of( str );
return order == unsigned( -1 ) ?
unsigned( -1 ):
ordered_[ order ];
}
unsigned order_of( const char* ) const;
unsigned add( std::string str ) { return add( str.c_str() ); }
unsigned add( const char* );
void clear();
/**
* Returns std::make_pair( find( word ), find( word + 'Z' ) ) which makes it easy
* to implement word* searches
*/
std::pair<const_iterator, const_iterator> upper_lower( const char* ) const;
const_iterator begin() const { return const_iterator( this, 0 ); }
const_iterator end() const { return const_iterator( this, ordered_.size() ); }
bool empty() const { return !ordered_.size(); }
unsigned size() const { return ordered_.size(); }
static void remove( std::string );
const_iterator lower_bound( const char* ) const;
private:
stringarray strings_;
memvector<stringarray::index_type> ordered_;
memvector<stringarray::index_type> trie_;
};
inline
stringset::const_iterator operator + ( stringset::const_iterator a, stringset::const_iterator::difference_type d ) {
return a += d;
}
inline
std::ostream& operator << ( std::ostream& out, const stringset::const_iterator& other ) {
return out << "[ " << other.idx_ << " ]";
}
#endif /* LPC_STRINGSET_H1106061353_INCLUDE_GUARD_ */
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