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stl.h: transparent conversion of STL linked lists

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This commit is contained in:
Wenzel Jakob 2016-02-23 17:28:45 +01:00
parent a3861b54c4
commit 82ba330080
1 changed files with 21 additions and 8 deletions
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29
include/pybind11/stl.h
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@ -15,6 +15,7 @@
#include <map> #include <map>
#include <unordered_map> #include <unordered_map>
#include <iostream> #include <iostream>
#include <list>
#if defined(_MSC_VER) #if defined(_MSC_VER)
#pragma warning(push) #pragma warning(push)
@ -91,26 +92,31 @@ template <typename Type, typename Key, typename Value> struct map_caster {
PYBIND11_TYPE_CASTER(type, _("dict<") + key_conv::name() + _(", ") + value_conv::name() + _(">")); PYBIND11_TYPE_CASTER(type, _("dict<") + key_conv::name() + _(", ") + value_conv::name() + _(">"));
}; };
template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Alloc>> { template <typename Type, typename Value> struct list_caster {
typedef std::vector<Type, Alloc> vector_type; typedef Type type;
typedef type_caster<Type> value_conv; typedef type_caster<Value> value_conv;
bool load(handle src, bool convert) { bool load(handle src, bool convert) {
list l(src, true); list l(src, true);
if (!l.check()) if (!l.check())
return false; return false;
value.reserve(l.size());
value.clear();
value_conv conv; value_conv conv;
value.clear();
reserve_maybe(l, &value);
for (auto it : l) { for (auto it : l) {
if (!conv.load(it, convert)) if (!conv.load(it, convert))
return false; return false;
value.push_back((Type) conv); value.push_back((Value) conv);
} }
return true; return true;
} }
static handle cast(const vector_type &src, return_value_policy policy, handle parent) { template <typename T = Type,
typename std::enable_if<std::is_same<decltype(std::declval<T>().reserve(0)), void>::value, int>::type = 0>
void reserve_maybe(list l, Type *) { value.reserve(l.size()); }
void reserve_maybe(list, void *) { }
static handle cast(const Type &src, return_value_policy policy, handle parent) {
list l(src.size()); list l(src.size());
size_t index = 0; size_t index = 0;
for (auto const &value: src) { for (auto const &value: src) {
@ -121,9 +127,16 @@ template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Al
} }
return l.release(); return l.release();
} }
PYBIND11_TYPE_CASTER(vector_type, _("list<") + value_conv::name() + _(">"));
PYBIND11_TYPE_CASTER(Type, _("list<") + value_conv::name() + _(">"));
}; };
template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Alloc>>
: list_caster<std::vector<Type, Alloc>, Type> { };
template <typename Type, typename Alloc> struct type_caster<std::list<Type, Alloc>>
: list_caster<std::list<Type, Alloc>, Type> { };
template <typename Type, size_t Size> struct type_caster<std::array<Type, Size>> { template <typename Type, size_t Size> struct type_caster<std::array<Type, Size>> {
typedef std::array<Type, Size> array_type; typedef std::array<Type, Size> array_type;
typedef type_caster<Type> value_conv; typedef type_caster<Type> value_conv;