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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
#include "named_expression.hpp"
#include "formula_token.hpp"
#include "formula_tokens.hpp"
#include "orcus/spreadsheet/document.hpp"
#include <ixion/formula.hpp>
#include <ixion/model_context.hpp>
#include <ixion/named_expressions_iterator.hpp>
#include <ixion/formula_name_resolver.hpp>
#include <structmember.h>
namespace ss = orcus::spreadsheet;
namespace orcus { namespace python {
namespace {
/** non-python part of the object. */
struct named_exp_data
{
const ss::document* doc = nullptr;
const ixion::formula_tokens_t* tokens = nullptr;
ixion::abs_address_t origin;
};
/**
* Python object for orcus.NamedExpression.
*/
struct pyobj_named_exp
{
PyObject_HEAD
PyObject* origin;
PyObject* formula;
named_exp_data* data;
};
inline pyobj_named_exp* t(PyObject* self)
{
return reinterpret_cast<pyobj_named_exp*>(self);
}
void init_members(pyobj_named_exp* self)
{
Py_INCREF(Py_None);
self->origin = Py_None;
Py_INCREF(Py_None);
self->formula = Py_None;
}
void tp_dealloc(pyobj_named_exp* self)
{
delete self->data;
self->data = nullptr;
Py_CLEAR(self->origin);
Py_CLEAR(self->formula);
Py_TYPE(self)->tp_free(reinterpret_cast<PyObject*>(self));
}
int tp_init(pyobj_named_exp* self, PyObject* /*args*/, PyObject* /*kwargs*/)
{
init_members(self);
return 0;
}
PyObject* tp_new(PyTypeObject* type, PyObject* /*args*/, PyObject* /*kwargs*/)
{
pyobj_named_exp* self = (pyobj_named_exp*)type->tp_alloc(type, 0);
self->data = new named_exp_data;
return reinterpret_cast<PyObject*>(self);
}
PyObject* ne_get_formula_tokens(PyObject* self, PyObject* /*args*/, PyObject* /*kwargs*/)
{
named_exp_data& data = *t(self)->data;
if (!data.tokens)
{
Py_INCREF(Py_None);
return Py_None;
}
return create_formula_tokens_iterator_object(*data.doc, data.origin, *data.tokens);
}
PyMethodDef tp_methods[] =
{
{ "get_formula_tokens", (PyCFunction)ne_get_formula_tokens, METH_NOARGS, "Get a formula tokens iterator." },
{ nullptr }
};
PyMemberDef tp_members[] =
{
{ (char*)"origin", T_OBJECT_EX, offsetof(pyobj_named_exp, origin), READONLY, (char*)"anchoring cell for the named expression" },
{ (char*)"formula", T_OBJECT_EX, offsetof(pyobj_named_exp, formula), READONLY, (char*)"formula string" },
{ nullptr }
};
PyTypeObject named_exp_type =
{
PyVarObject_HEAD_INIT(nullptr, 0)
"orcus.NamedExpression", // tp_name
sizeof(pyobj_named_exp), // tp_basicsize
0, // tp_itemsize
(destructor)tp_dealloc, // tp_dealloc
0, // tp_print
0, // tp_getattr
0, // tp_setattr
0, // tp_compare
0, // tp_repr
0, // tp_as_number
0, // tp_as_sequence
0, // tp_as_mapping
0, // tp_hash
0, // tp_call
0, // tp_str
0, // tp_getattro
0, // tp_setattro
0, // tp_as_buffer
Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, // tp_flags
"orcus spreadsheet named expression", // tp_doc
0, // tp_traverse
0, // tp_clear
0, // tp_richcompare
0, // tp_weaklistoffset
0, // tp_iter
0, // tp_iternext
tp_methods, // tp_methods
tp_members, // tp_members
0, // tp_getset
0, // tp_base
0, // tp_dict
0, // tp_descr_get
0, // tp_descr_set
0, // tp_dictoffset
(initproc)tp_init, // tp_init
0, // tp_alloc
tp_new, // tp_new
};
} // anonymous namespace
PyObject* create_named_exp_object(const spreadsheet::document& doc, const ixion::named_expression_t* exp)
{
PyTypeObject* named_exp_type = get_named_exp_type();
if (!named_exp_type)
{
PyErr_SetString(PyExc_RuntimeError, "Failed to get the named expression type object.");
return nullptr;
}
PyObject* obj = named_exp_type->tp_new(named_exp_type, nullptr, nullptr);
if (!obj)
{
PyErr_SetString(PyExc_RuntimeError, "Failed to instantiate a named expression object.");
return nullptr;
}
pyobj_named_exp* self = reinterpret_cast<pyobj_named_exp*>(obj);
init_members(self);
if (exp)
{
named_exp_data& data = *self->data;
data.doc = &doc;
data.origin = exp->origin;
data.tokens = &exp->tokens;
const ixion::model_context& cxt = doc.get_model_context();
auto* resolver = doc.get_formula_name_resolver(spreadsheet::formula_ref_context_t::global);
// Create base
std::string origin_s = resolver->get_name(exp->origin, ixion::abs_address_t(), true);
self->origin = PyUnicode_FromStringAndSize(origin_s.data(), origin_s.size());
// Create formula expression string.
std::string formula_s = ixion::print_formula_tokens(cxt, exp->origin, *resolver, exp->tokens);
self->formula = PyUnicode_FromStringAndSize(formula_s.data(), formula_s.size());
}
return obj;
}
PyObject* create_named_exp_dict(const ss::document& doc, ixion::named_expressions_iterator iter)
{
PyObject* dict = PyDict_New();
for (; iter.has(); iter.next())
{
auto ne = iter.get();
PyObject* name = PyUnicode_FromStringAndSize(ne.name->data(), ne.name->size());
PyObject* tokens = create_named_exp_object(doc, ne.expression);
PyDict_SetItem(dict, name, tokens);
}
return dict;
}
PyTypeObject* get_named_exp_type()
{
return &named_exp_type;
}
}}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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