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/*
* Copyright (c) 2003-2009, 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.
*/
#include "reconcile.h"
namespace ledger {
#define xact_next(x) reinterpret_cast<xact_t *>(x->xdata().ptr)
#define xact_next_ptr(x) reinterpret_cast<xact_t **>(&x->xdata().ptr)
static bool search_for_balance(amount_t& amount,
xact_t ** prev, xact_t * next)
{
for (; next; next = xact_next(next)) {
xact_t * temp = *prev;
*prev = next;
amount -= next->amount;
if (! amount) {
*xact_next_ptr(next) = NULL;
return true;
}
else if (search_for_balance(amount, xact_next_ptr(next), xact_next(next)))
{
return true;
}
amount += next->amount;
*prev = temp;
}
return false;
}
void reconcile_xacts::push_to_handler(xact_t * first)
{
for (; first; first = xact_next(first))
item_handler<xact_t>::operator()(*first);
item_handler<xact_t>::flush();
}
void reconcile_xacts::flush()
{
value_t cleared_balance;
value_t pending_balance;
xact_t * first = NULL;
xact_t ** last_ptr = &first;
foreach (xact_t * xact, xacts) {
if (! is_valid(cutoff) || xact->date() < cutoff) {
switch (xact->state()) {
case item_t::CLEARED:
cleared_balance += xact->amount;
break;
case item_t::UNCLEARED:
case item_t::PENDING:
pending_balance += xact->amount;
*last_ptr = xact;
last_ptr = xact_next_ptr(xact);
break;
}
}
}
if (cleared_balance.type() >= value_t::BALANCE)
throw std::runtime_error("Cannot reconcile accounts with multiple commodities");
cleared_balance.cast(value_t::AMOUNT);
balance.cast(value_t::AMOUNT);
commodity_t& cb_comm = cleared_balance.as_amount().commodity();
commodity_t& b_comm = balance.as_amount().commodity();
balance -= cleared_balance;
if (balance.type() >= value_t::BALANCE)
throw_(std::runtime_error,
"Reconcile balance is not of the same commodity ('"
<< b_comm.symbol() << "' != '" << cb_comm.symbol() << "')");
// If the amount to reconcile is the same as the pending balance,
// then assume an exact match and return the results right away.
amount_t& to_reconcile(balance.as_amount_lval());
pending_balance.cast(value_t::AMOUNT);
if (to_reconcile == pending_balance.as_amount() ||
search_for_balance(to_reconcile, &first, first)) {
push_to_handler(first);
} else {
throw std::runtime_error("Could not reconcile account!");
}
}
} // namespace ledger
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