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Changed keep_alive template arguments from int to size_t

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Passing a negative value wasn't valid anyway, and moreover this avoids a
little bit of extra code to avoid signed/unsigned argument warnings.
This commit is contained in:
Jason Rhinelander 2017-01-22 09:23:53 -05:00 committed by Wenzel Jakob
parent 2686da8350
commit 3b4b921192
2 changed files with 10 additions and 10 deletions
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14
include/pybind11/attr.h
View File

@ -42,7 +42,7 @@ template <typename T> struct base {
};
/// Keep patient alive while nurse lives
template <int Nurse, int Patient> struct keep_alive { };
template <size_t Nurse, size_t Patient> struct keep_alive { };
/// Annotation indicating that a class is involved in a multiple inheritance relationship
struct multiple_inheritance { };
@ -69,7 +69,7 @@ struct undefined_t;
template <op_id id, op_type ot, typename L = undefined_t, typename R = undefined_t> struct op_;
template <typename... Args> struct init;
template <typename... Args> struct init_alias;
inline void keep_alive_impl(int Nurse, int Patient, function_arguments args, handle ret);
inline void keep_alive_impl(size_t Nurse, size_t Patient, function_arguments args, handle ret);
/// Internal data structure which holds metadata about a keyword argument
struct argument_record {
@ -360,14 +360,14 @@ struct process_attribute<arithmetic> : process_attribute_default<arithmetic> {};
* pre-call handler if both Nurse, Patient != 0 and use the post-call handler
* otherwise
*/
template <int Nurse, int Patient> struct process_attribute<keep_alive<Nurse, Patient>> : public process_attribute_default<keep_alive<Nurse, Patient>> {
template <int N = Nurse, int P = Patient, enable_if_t<N != 0 && P != 0, int> = 0>
template <size_t Nurse, size_t Patient> struct process_attribute<keep_alive<Nurse, Patient>> : public process_attribute_default<keep_alive<Nurse, Patient>> {
template <size_t N = Nurse, size_t P = Patient, enable_if_t<N != 0 && P != 0, int> = 0>
static void precall(function_arguments args) { keep_alive_impl(Nurse, Patient, args, handle()); }
template <int N = Nurse, int P = Patient, enable_if_t<N != 0 && P != 0, int> = 0>
template <size_t N = Nurse, size_t P = Patient, enable_if_t<N != 0 && P != 0, int> = 0>
static void postcall(function_arguments, handle) { }
template <int N = Nurse, int P = Patient, enable_if_t<N == 0 || P == 0, int> = 0>
template <size_t N = Nurse, size_t P = Patient, enable_if_t<N == 0 || P == 0, int> = 0>
static void precall(function_arguments) { }
template <int N = Nurse, int P = Patient, enable_if_t<N == 0 || P == 0, int> = 0>
template <size_t N = Nurse, size_t P = Patient, enable_if_t<N == 0 || P == 0, int> = 0>
static void postcall(function_arguments args, handle ret) { keep_alive_impl(Nurse, Patient, args, ret); }
};

6
include/pybind11/pybind11.h
View File

@ -1494,10 +1494,10 @@ inline void keep_alive_impl(handle nurse, handle patient) {
(void) wr.release();
}
PYBIND11_NOINLINE inline void keep_alive_impl(int Nurse, int Patient, function_arguments args, handle ret) {
PYBIND11_NOINLINE inline void keep_alive_impl(size_t Nurse, size_t Patient, function_arguments args, handle ret) {
keep_alive_impl(
Nurse == 0 ? ret : Nurse > 0 && (size_t) Nurse <= args.size() ? args[Nurse - 1] : handle(),
Patient == 0 ? ret : Patient > 0 && (size_t) Patient <= args.size() ? args[Patient - 1] : handle()
Nurse == 0 ? ret : Nurse <= args.size() ? args[Nurse - 1] : handle(),
Patient == 0 ? ret : Patient <= args.size() ? args[Patient - 1] : handle()
);
}