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/*
* Copyright (c) 2003-2010, John Wiegley. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of New Artisans LLC nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 COPYRIGHT
* OWNER OR CONTRIBUTORS 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.
*/
/**
* @addtogroup data
*/
/**
* @file iterators.h
* @author John Wiegley
*
* @ingroup data
*/
#ifndef _ITERATORS_H
#define _ITERATORS_H
#include "xact.h"
#include "post.h"
#include "account.h"
#include "temps.h"
namespace ledger {
class journal_t;
class posts_iterator : public noncopyable
{
public:
virtual ~posts_iterator() throw() {}
virtual post_t * operator()() = 0;
};
class xact_posts_iterator : public posts_iterator
{
posts_list::iterator posts_i;
posts_list::iterator posts_end;
bool posts_uninitialized;
public:
xact_posts_iterator() : posts_uninitialized(true) {
TRACE_CTOR(xact_posts_iterator, "");
}
xact_posts_iterator(xact_t& xact)
: posts_uninitialized(true) {
TRACE_CTOR(xact_posts_iterator, "xact_t&");
reset(xact);
}
virtual ~xact_posts_iterator() throw() {
TRACE_DTOR(xact_posts_iterator);
}
void reset(xact_t& xact) {
posts_i = xact.posts.begin();
posts_end = xact.posts.end();
posts_uninitialized = false;
}
virtual post_t * operator()() {
if (posts_uninitialized || posts_i == posts_end)
return NULL;
return *posts_i++;
}
};
class xacts_iterator : public noncopyable
{
public:
xacts_list::iterator xacts_i;
xacts_list::iterator xacts_end;
bool xacts_uninitialized;
xacts_iterator() : xacts_uninitialized(true) {
TRACE_CTOR(xacts_iterator, "");
}
xacts_iterator(journal_t& journal) : xacts_uninitialized(true) {
TRACE_CTOR(xacts_iterator, "journal_t&");
reset(journal);
}
virtual ~xacts_iterator() throw() {
TRACE_DTOR(xacts_iterator);
}
void reset(journal_t& journal);
xact_t * operator()();
};
class journal_posts_iterator : public posts_iterator
{
xacts_iterator xacts;
xact_posts_iterator posts;
public:
journal_posts_iterator() {
TRACE_CTOR(journal_posts_iterator, "");
}
journal_posts_iterator(journal_t& journal) {
TRACE_CTOR(journal_posts_iterator, "journal_t&");
reset(journal);
}
virtual ~journal_posts_iterator() throw() {
TRACE_DTOR(journal_posts_iterator);
}
void reset(journal_t& journal);
virtual post_t * operator()();
};
class posts_commodities_iterator : public posts_iterator
{
protected:
journal_posts_iterator journal_posts;
xacts_iterator xacts;
xact_posts_iterator posts;
temporaries_t temps;
xacts_list xact_temps;
public:
posts_commodities_iterator() {
TRACE_CTOR(posts_commodities_iterator, "");
}
posts_commodities_iterator(journal_t& journal) {
TRACE_CTOR(posts_commodities_iterator, "journal_t&");
reset(journal);
}
virtual ~posts_commodities_iterator() throw() {
TRACE_DTOR(posts_commodities_iterator);
}
void reset(journal_t& journal);
virtual post_t * operator()();
};
class accounts_iterator : public noncopyable
{
public:
virtual ~accounts_iterator() throw() {}
virtual account_t * operator()() = 0;
};
class basic_accounts_iterator : public accounts_iterator
{
std::list<accounts_map::const_iterator> accounts_i;
std::list<accounts_map::const_iterator> accounts_end;
public:
basic_accounts_iterator() {
TRACE_CTOR(basic_accounts_iterator, "");
}
basic_accounts_iterator(account_t& account) {
TRACE_CTOR(basic_accounts_iterator, "account_t&");
push_back(account);
}
virtual ~basic_accounts_iterator() throw() {
TRACE_DTOR(basic_accounts_iterator);
}
void push_back(account_t& account) {
accounts_i.push_back(account.accounts.begin());
accounts_end.push_back(account.accounts.end());
}
virtual account_t * operator()();
};
class sorted_accounts_iterator : public accounts_iterator
{
expr_t sort_cmp;
bool flatten_all;
typedef std::deque<account_t *> accounts_deque_t;
std::list<accounts_deque_t> accounts_list;
std::list<accounts_deque_t::const_iterator> sorted_accounts_i;
std::list<accounts_deque_t::const_iterator> sorted_accounts_end;
public:
sorted_accounts_iterator(account_t& account,
const expr_t& _sort_cmp, bool _flatten_all)
: sort_cmp(_sort_cmp), flatten_all(_flatten_all) {
TRACE_CTOR(sorted_accounts_iterator, "const expr_t&, bool, account_t&");
push_back(account);
}
virtual ~sorted_accounts_iterator() throw() {
TRACE_DTOR(sorted_accounts_iterator);
}
void push_back(account_t& account);
void push_all(account_t& account, accounts_deque_t& deque);
void sort_accounts(account_t& account, accounts_deque_t& deque);
virtual account_t * operator()();
};
} // namespace ledger
#endif // _ITERATORS_H
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