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148 lines
4.5 KiB
148 lines
4.5 KiB
#ifndef LPC_LEAFDATA_H1102530057_INCLUDE_GUARD_
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#define LPC_LEAFDATA_H1102530057_INCLUDE_GUARD_
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/* This file is part of indexlib.
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* Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org>
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*
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* Indexlib is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License, version 2, as
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* published by the Free Software Foundation and available as file
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* GPL_V2 which is distributed along with indexlib.
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*
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* Indexlib is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA
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*
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* In addition, as a special exception, the copyright holders give
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* permission to link the code of this program with any edition of
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* the TQt library by Trolltech AS, Norway (or with modified versions
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* of TQt that use the same license as TQt), and distribute linked
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* combinations including the two. You must obey the GNU General
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* Public License in all respects for all of the code used other than
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* TQt. If you modify this file, you may extend this exception to
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* your version of the file, but you are not obligated to do so. If
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* you do not wish to do so, delete this exception statement from
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* your version.
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*/
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#include <iostream>
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#include <iterator>
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#include <inttypes.h>
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#include "pointer.h"
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#include "memvector.h"
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#include "thing.h"
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void set_leafdata_manager( memory_manager* );
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memory_manager* get_leafdata_manager();
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struct leafdata_iterator : public std::iterator<STD_NAMESPACE_PREFIX input_iterator_tag,uint32_t> {
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public:
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explicit leafdata_iterator( const unsigned char* d ):
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data_( d ),
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value_( 0 ),
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valid_( true )
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{
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}
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value_type operator *() {
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assert( valid_ );
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valid_ = false;
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uint32_t delta = *data_++;
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if ( delta ) {
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value_ += delta;
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} else {
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value_ = byte_io::read<uint32_t>( data_ );
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data_ += byte_io::byte_length<uint32_t>();
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}
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return value_ - 1;
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}
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const unsigned char* raw() const { return data_; }
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leafdata_iterator& operator ++ () {
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valid_ = true;
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return *this;
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}
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bool operator == ( const leafdata_iterator& other ) const {
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return data_ == other.data_;
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}
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bool operator < ( const leafdata_iterator& other ) const {
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return data_ < other.data_;
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}
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private:
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const unsigned char* data_;
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uint32_t value_;
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bool valid_;
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};
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inline
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bool operator != ( const leafdata_iterator& one, const leafdata_iterator& other ) {
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return !( one == other );
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}
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START_THING( leaf_data, thing< thing_manager<&get_leafdata_manager> > )
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private:
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MEMBER( uint16_t, capacity, 0 )
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MEMBER( uint16_t, usedbytes, 2 )
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friend class leaf_data_pool_traits;
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static const unsigned data_offset = 4;
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public:
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MY_BASE( data_offset )
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public:
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typedef leafdata_iterator iterator;
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leafdata_iterator begin() const { return iterator( const_cast<unsigned char*>( my_base() ) ); }
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leafdata_iterator end() const { return iterator( const_cast<unsigned char*>( my_base() ) + usedbytes() ); }
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uint32_t get_reference( unsigned idx ) const;
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void add_reference( uint32_t );
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void remove_reference( uint32_t );
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bool has_reference( uint32_t ) const;
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bool can_add( uint32_t ) const;
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unsigned nelems() const;
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unsigned next_byte_size() const;
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void grow();
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void print( std::ostream& out ) const;
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static void construct( void* );
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static void init( pointer<leaf_data> p ) { construct( p.raw_pointer() ); }
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static unsigned start_bytes() { return 16; }
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END_THING( leaf_data )
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DO_POINTER_SPECS( leaf_data )
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typedef leaf_data leafdata;
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typedef leaf_dataptr leafdataptr;
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struct leaf_data_pool_traits {
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typedef leaf_data value_type;
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typedef leaf_dataptr pointer;
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static bool is_free( pointer p ) { return p->capacity() == 0; }
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static void mark_free( pointer p ) { memset( p.raw_pointer(), 0, p->capacity() ); }
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static unsigned size_of( pointer p ) { return p->capacity() + leafdata::data_offset; }
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static unsigned type_offset() { return 2; }
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static unsigned min_size() { return leaf_data::start_bytes(); }
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static unsigned max_size() { return 1024 * 64; }
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static void set_manager( memory_manager* m ) { return set_leafdata_manager( m ); }
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static void print( std::ostream& out, pointer p ) { out << '[' << p << "] leafdata:\n"; p->print( out ); }
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};
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#endif /* LPC_LEAFDATA_H1102530057_INCLUDE_GUARD_ */
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