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detect unreferenced keyword arguments in function calls

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Wenzel Jakob 2015-12-30 18:48:20 +01:00
parent e9dc824866
commit 3367cecc6b
1 changed files with 16 additions and 12 deletions
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28
include/pybind11/pybind11.h
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@ -24,6 +24,7 @@
#endif #endif
#include "cast.h" #include "cast.h"
#include <iostream>
NAMESPACE_BEGIN(pybind11) NAMESPACE_BEGIN(pybind11)
@ -97,16 +98,17 @@ private:
(void) unused; (void) unused;
} }
template <typename... T> static void process_extras(const std::tuple<T...> &args, template <typename... T> static int process_extras(const std::tuple<T...> &args,
PyObject *pyArgs, PyObject *kwargs, bool is_method) { PyObject *pyArgs, PyObject *kwargs, bool is_method) {
process_extras(args, pyArgs, kwargs, is_method, typename detail::make_index_sequence<sizeof...(T)>::type()); return process_extras(args, pyArgs, kwargs, is_method, typename detail::make_index_sequence<sizeof...(T)>::type());
} }
template <typename... T, size_t... Index> static void process_extras(const std::tuple<T...> &args, template <typename... T, size_t... Index> static int process_extras(const std::tuple<T...> &args,
PyObject *pyArgs, PyObject *kwargs, bool is_method, detail::index_sequence<Index...>) { PyObject *pyArgs, PyObject *kwargs, bool is_method, detail::index_sequence<Index...>) {
int index = is_method ? 1 : 0; int index = is_method ? 1 : 0, kwarg_refs = 0;
int unused[] = { 0, (process_extra(std::get<Index>(args), index, pyArgs, kwargs), 0)... }; int unused[] = { 0, (process_extra(std::get<Index>(args), index, kwarg_refs, pyArgs, kwargs), 0)... };
(void) unused; (void) index; (void) unused; (void) index;
return kwarg_refs;
} }
static void process_extra(const char *doc, function_entry *entry, const char **, const char **) { entry->doc = doc; } static void process_extra(const char *doc, function_entry *entry, const char **, const char **) { entry->doc = doc; }
@ -133,8 +135,8 @@ private:
static void process_extra(const pybind11::return_value_policy p, function_entry *entry, const char **, const char **) { entry->policy = p; } static void process_extra(const pybind11::return_value_policy p, function_entry *entry, const char **, const char **) { entry->policy = p; }
static void process_extra(pybind11::sibling s, function_entry *entry, const char **, const char **) { entry->sibling = s.value; } static void process_extra(pybind11::sibling s, function_entry *entry, const char **, const char **) { entry->sibling = s.value; }
template <typename T> static void process_extra(T, int &, PyObject *, PyObject *) { } template <typename T> static void process_extra(T, int &, int&, PyObject *, PyObject *) { }
static void process_extra(const pybind11::arg &a, int &index, PyObject *args, PyObject *kwargs) { static void process_extra(const pybind11::arg &a, int &index, int &kwarg_refs, PyObject *args, PyObject *kwargs) {
if (kwargs) { if (kwargs) {
if (PyTuple_GET_ITEM(args, index) != nullptr) { if (PyTuple_GET_ITEM(args, index) != nullptr) {
index++; index++;
@ -144,12 +146,13 @@ private:
if (value) { if (value) {
Py_INCREF(value); Py_INCREF(value);
PyTuple_SetItem(args, index, value); PyTuple_SetItem(args, index, value);
kwarg_refs++;
} }
} }
index++; index++;
} }
template <typename T> template <typename T>
static void process_extra(const pybind11::arg_t<T> &a, int &index, PyObject *args, PyObject *kwargs) { static void process_extra(const pybind11::arg_t<T> &a, int &index, int &kwarg_refs, PyObject *args, PyObject *kwargs) {
if (PyTuple_GET_ITEM(args, index) != nullptr) { if (PyTuple_GET_ITEM(args, index) != nullptr) {
index++; index++;
return; return;
@ -158,6 +161,7 @@ private:
if (kwargs) if (kwargs)
value = PyDict_GetItemString(kwargs, a.name); value = PyDict_GetItemString(kwargs, a.name);
if (value) { if (value) {
kwarg_refs++;
Py_INCREF(value); Py_INCREF(value);
} else { } else {
value = detail::type_caster<typename detail::decay<T>::type>::cast( value = detail::type_caster<typename detail::decay<T>::type>::cast(
@ -185,9 +189,9 @@ public:
m_entry->impl = [](function_entry *entry, PyObject *pyArgs, PyObject *kwargs, PyObject *parent) -> PyObject * { m_entry->impl = [](function_entry *entry, PyObject *pyArgs, PyObject *kwargs, PyObject *parent) -> PyObject * {
capture *data = (capture *) entry->data; capture *data = (capture *) entry->data;
process_extras(data->extras, pyArgs, kwargs, entry->is_method); int kwarg_refs = process_extras(data->extras, pyArgs, kwargs, entry->is_method);
cast_in args; cast_in args;
if (!args.load(pyArgs, true)) if (kwarg_refs != (kwargs ? PyDict_Size(kwargs) : 0) || !args.load(pyArgs, true))
return (PyObject *) 1; /* Special return code: try next overload */ return (PyObject *) 1; /* Special return code: try next overload */
return cast_out::cast(args.template call<Return>(data->f), entry->policy, parent); return cast_out::cast(args.template call<Return>(data->f), entry->policy, parent);
}; };
@ -248,9 +252,9 @@ private:
m_entry->impl = [](function_entry *entry, PyObject *pyArgs, PyObject *kwargs, PyObject *parent) -> PyObject *{ m_entry->impl = [](function_entry *entry, PyObject *pyArgs, PyObject *kwargs, PyObject *parent) -> PyObject *{
capture *data = (capture *) entry->data; capture *data = (capture *) entry->data;
process_extras(data->extras, pyArgs, kwargs, entry->is_method); int kwarg_refs = process_extras(data->extras, pyArgs, kwargs, entry->is_method);
cast_in args; cast_in args;
if (!args.load(pyArgs, true)) if (kwarg_refs != (kwargs ? PyDict_Size(kwargs) : 0) || !args.load(pyArgs, true))
return (PyObject *) 1; /* Special return code: try next overload */ return (PyObject *) 1; /* Special return code: try next overload */
return cast_out::cast(args.template call<Return>(data->f), entry->policy, parent); return cast_out::cast(args.template call<Return>(data->f), entry->policy, parent);
}; };