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#ifndef LPC_LEAFDATA_H1102530057_INCLUDE_GUARD_
#define LPC_LEAFDATA_H1102530057_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 <iostream>
#include <iterator>
#include <inttypes.h>
#include "pointer.h"
#include "memvector.h"
#include "thing.h"
void set_leafdata_manager( memory_manager* );
memory_manager* get_leafdata_manager();
struct leafdata_iterator : public std::iterator<STD_NAMESPACE_PREFIX input_iterator_tag,uint32_t> {
public:
explicit leafdata_iterator( const unsigned char* d ):
data_( d ),
value_( 0 ),
valid_( true )
{
}
value_type operator *() {
assert( valid_ );
valid_ = false;
uint32_t delta = *data_++;
if ( delta ) {
value_ += delta;
} else {
value_ = byte_io::read<uint32_t>( data_ );
data_ += byte_io::byte_lenght<uint32_t>();
}
return value_ - 1;
}
const unsigned char* raw() const { return data_; }
leafdata_iterator& operator ++ () {
valid_ = true;
return *this;
}
bool operator == ( const leafdata_iterator& other ) const {
return data_ == other.data_;
}
bool operator < ( const leafdata_iterator& other ) const {
return data_ < other.data_;
}
private:
const unsigned char* data_;
uint32_t value_;
bool valid_;
};
inline
bool operator != ( const leafdata_iterator& one, const leafdata_iterator& other ) {
return !( one == other );
}
START_THING( leaf_data, thing< thing_manager<&get_leafdata_manager> > )
private:
MEMBER( uint16_t, capacity, 0 )
MEMBER( uint16_t, usedbytes, 2 )
friend class leaf_data_pool_traits;
static const unsigned data_offset = 4;
public:
MY_BASE( data_offset )
public:
typedef leafdata_iterator iterator;
leafdata_iterator begin() const { return iterator( const_cast<unsigned char*>( my_base() ) ); }
leafdata_iterator end() const { return iterator( const_cast<unsigned char*>( my_base() ) + usedbytes() ); }
uint32_t get_reference( unsigned idx ) const;
void add_reference( uint32_t );
void remove_reference( uint32_t );
bool has_reference( uint32_t ) const;
bool can_add( uint32_t ) const;
unsigned nelems() const;
unsigned next_byte_size() const;
void grow();
void print( std::ostream& out ) const;
static void construct( void* );
static void init( pointer<leaf_data> p ) { construct( p.raw_pointer() ); }
static unsigned start_bytes() { return 16; }
END_THING( leaf_data )
DO_POINTER_SPECS( leaf_data )
typedef leaf_data leafdata;
typedef leaf_dataptr leafdataptr;
struct leaf_data_pool_traits {
typedef leaf_data value_type;
typedef leaf_dataptr pointer;
static bool is_free( pointer p ) { return p->capacity() == 0; }
static void mark_free( pointer p ) { memset( p.raw_pointer(), 0, p->capacity() ); }
static unsigned size_of( pointer p ) { return p->capacity() + leafdata::data_offset; }
static unsigned type_offset() { return 2; }
static unsigned min_size() { return leaf_data::start_bytes(); }
static unsigned max_size() { return 1024 * 64; }
static void set_manager( memory_manager* m ) { return set_leafdata_manager( m ); }
static void print( std::ostream& out, pointer p ) { out << '[' << p << "] leafdata:\n"; p->print( out ); }
};
#endif /* LPC_LEAFDATA_H1102530057_INCLUDE_GUARD_ */
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