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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 <system.hh>
#include "compare.h"
#include "op.h"
#include "post.h"
#include "account.h"
namespace ledger {
namespace {
template <typename T>
void push_sort_value(std::list<sort_value_t>& sort_values,
expr_t::ptr_op_t node, T * scope)
{
if (node->kind == expr_t::op_t::O_CONS) {
push_sort_value(sort_values, node->left(), scope);
push_sort_value(sort_values, node->right(), scope);
}
else {
bool inverted = false;
if (node->kind == expr_t::op_t::O_NEG) {
inverted = true;
node = node->left();
}
sort_values.push_back(sort_value_t());
sort_values.back().inverted = inverted;
sort_values.back().value = expr_t(node).calc(*scope).simplified();
if (sort_values.back().value.is_null())
throw_(calc_error,
_("Could not determine sorting value based an expression"));
}
}
}
template <typename T>
void compare_items<T>::find_sort_values(std::list<sort_value_t>& sort_values,
T * scope)
{
push_sort_value(sort_values, sort_order.get_op(), scope);
}
template <>
bool compare_items<post_t>::operator()(post_t * left, post_t * right)
{
assert(left);
assert(right);
post_t::xdata_t& lxdata(left->xdata());
if (! lxdata.has_flags(POST_EXT_SORT_CALC)) {
find_sort_values(lxdata.sort_values, left);
lxdata.add_flags(POST_EXT_SORT_CALC);
}
post_t::xdata_t& rxdata(right->xdata());
if (! rxdata.has_flags(POST_EXT_SORT_CALC)) {
find_sort_values(rxdata.sort_values, right);
rxdata.add_flags(POST_EXT_SORT_CALC);
}
return sort_value_is_less_than(lxdata.sort_values, rxdata.sort_values);
}
template <>
bool compare_items<account_t>::operator()(account_t * left, account_t * right)
{
assert(left);
assert(right);
account_t::xdata_t& lxdata(left->xdata());
if (! lxdata.has_flags(ACCOUNT_EXT_SORT_CALC)) {
find_sort_values(lxdata.sort_values, left);
lxdata.add_flags(ACCOUNT_EXT_SORT_CALC);
}
account_t::xdata_t& rxdata(right->xdata());
if (! rxdata.has_flags(ACCOUNT_EXT_SORT_CALC)) {
find_sort_values(rxdata.sort_values, right);
rxdata.add_flags(ACCOUNT_EXT_SORT_CALC);
}
DEBUG("value.sort", "Comparing accounts " << left->fullname()
<< " <> " << right->fullname());
return sort_value_is_less_than(lxdata.sort_values, rxdata.sort_values);
}
} // namespace ledger
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