ledger/python/py_expr.cc

145 lines
4.2 KiB
C++

/*
* 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 "pyinterp.h"
#include "pyutils.h"
#include "expr.h"
#include <boost/python/exception_translator.hpp>
#include <boost/python/implicit.hpp>
#include <boost/python/args.hpp>
namespace ledger {
using namespace boost::python;
#define EXC_TRANSLATOR(type) \
void exc_translate_ ## type(const type& err) { \
PyErr_SetString(PyExc_ArithmeticError, err.what()); \
}
//EXC_TRANSLATOR(expr_error)
void export_expr()
{
class_< expr_t > ("Expr")
;
//register_optional_to_python<amount_t>();
//implicitly_convertible<string, amount_t>();
#define EXC_TRANSLATE(type) \
register_exception_translator<type>(&exc_translate_ ## type);
//EXC_TRANSLATE(expr_error);
}
} // namespace ledger
#if 0
value_t py_calc_1(xpath_t::op_t& xpath_t, const details_t& item)
{
value_t result;
xpath_t.calc(result, item);
return result;
}
template <typename T>
value_t py_calc(xpath_t::op_t& xpath_t, const T& item)
{
value_t result;
xpath_t.calc(result, details_t(item));
return result;
}
xpath_t::op_t * py_parse_xpath_t_1(const string& str)
{
return parse_xpath_t(str);
}
#define EXC_TRANSLATOR(type) \
void exc_translate_ ## type(const type& err) { \
PyErr_SetString(PyExc_RuntimeError, err.what()); \
}
EXC_TRANSLATOR(xpath_t_error)
EXC_TRANSLATOR(calc_error)
#if 0
EXC_TRANSLATOR(mask_error)
#endif
void export_xpath()
{
class_< details_t > ("Details", init<const entry_t&>())
.def(init<const transaction_t&>())
.def(init<const account_t&>())
.add_property("entry",
make_getter(&details_t::entry,
return_value_policy<reference_existing_object>()))
.add_property("xact",
make_getter(&details_t::xact,
return_value_policy<reference_existing_object>()))
.add_property("account",
make_getter(&details_t::account,
return_value_policy<reference_existing_object>()))
;
class_< xpath_t::op_t > ("ValueExpr", init<xpath_t::op_t::kind_t>())
.def("calc", py_calc_1)
.def("calc", py_calc<account_t>)
.def("calc", py_calc<entry_t>)
.def("calc", py_calc<transaction_t>)
;
def("parse_xpath_t", py_parse_xpath_t_1,
return_value_policy<manage_new_object>());
class_< item_predicate<transaction_t> >
("TransactionPredicate", init<string>())
.def("__call__", &item_predicate<transaction_t>::operator())
;
class_< item_predicate<account_t> >
("AccountPredicate", init<string>())
.def("__call__", &item_predicate<account_t>::operator())
;
#define EXC_TRANSLATE(type) \
register_error_translator<type>(&exc_translate_ ## type);
EXC_TRANSLATE(xpath_t_error);
EXC_TRANSLATE(calc_error);
#if 0
EXC_TRANSLATE(mask_error);
#endif
}
#endif