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https://github.com/pybind/pybind11.git
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support unordered set/map data structures (fixes #100)
This commit is contained in:
Wenzel Jakob
parent
4fee179900
commit
0880294924
@ -222,45 +222,49 @@ The following basic data types are supported out of the box (some may require
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an additional extension header to be included). To pass other data structures
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as arguments and return values, refer to the section on binding :ref:`classes`.
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+------------------------+--------------------------+-----------------------+
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| Data type | Description | Header file |
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+========================+==========================+=======================+
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| int8_t, uint8_t | 8-bit integers | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| int16_t, uint16_t | 16-bit integers | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| int32_t, uint32_t | 32-bit integers | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| int64_t, uint64_t | 64-bit integers | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| ssize_t, size_t | Platform-dependent size | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| float, double | Floating point types | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| bool | Two-state Boolean type | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| char | Character literal | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| const char * | UTF-8 string literal | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| std::string | STL dynamic UTF-8 string | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| std::pair<T1, T2> | Pair of two custom types | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| std::tuple<....> | Arbitrary tuple of types | pybind11/pybind11.h |
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+------------------------+--------------------------+-----------------------+
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| std::complex<T> | Complex numbers | pybind11/complex.h |
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+------------------------+--------------------------+-----------------------+
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| std::array<T, Size> | STL static array | pybind11/stl.h |
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+------------------------+--------------------------+-----------------------+
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| std::vector<T> | STL dynamic array | pybind11/stl.h |
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+------------------------+--------------------------+-----------------------+
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| std::map<T1, T2> | STL ordered map | pybind11/stl.h |
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+------------------------+--------------------------+-----------------------+
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| std::set<T> | STL ordered set | pybind11/stl.h |
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+------------------------+--------------------------+-----------------------+
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| std::function<...> | STL polymorphic function | pybind11/functional.h |
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+------------------------+--------------------------+-----------------------+
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+----------------------------+--------------------------+-----------------------+
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| Data type | Description | Header file |
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+============================+==========================+=======================+
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| int8_t, uint8_t | 8-bit integers | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| int16_t, uint16_t | 16-bit integers | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| int32_t, uint32_t | 32-bit integers | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| int64_t, uint64_t | 64-bit integers | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| ssize_t, size_t | Platform-dependent size | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| float, double | Floating point types | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| bool | Two-state Boolean type | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| char | Character literal | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| const char * | UTF-8 string literal | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| std::string | STL dynamic UTF-8 string | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| std::pair<T1, T2> | Pair of two custom types | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| std::tuple<....> | Arbitrary tuple of types | pybind11/pybind11.h |
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+----------------------------+--------------------------+-----------------------+
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| std::complex<T> | Complex numbers | pybind11/complex.h |
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+----------------------------+--------------------------+-----------------------+
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| std::array<T, Size> | STL static array | pybind11/stl.h |
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+----------------------------+--------------------------+-----------------------+
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| std::vector<T> | STL dynamic array | pybind11/stl.h |
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+----------------------------+--------------------------+-----------------------+
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| std::map<T1, T2> | STL ordered map | pybind11/stl.h |
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+----------------------------+--------------------------+-----------------------+
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| std::unordered_map<T1, T2> | STL unordered map | pybind11/stl.h |
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+----------------------------+--------------------------+-----------------------+
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| std::set<T> | STL ordered set | pybind11/stl.h |
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+----------------------------+--------------------------+-----------------------+
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| std::unordered_set<T> | STL unordered set | pybind11/stl.h |
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+----------------------------+--------------------------+-----------------------+
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| std::function<...> | STL polymorphic function | pybind11/functional.h |
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+----------------------------+--------------------------+-----------------------+
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.. [#f1] In practice, implementation and binding code will generally be located
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@ -10,8 +10,10 @@
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#pragma once
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#include "pybind11.h"
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#include <map>
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#include <set>
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#include <unordered_set>
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#include <map>
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#include <unordered_map>
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#include <iostream>
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#if defined(_MSC_VER)
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@ -22,77 +24,10 @@
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NAMESPACE_BEGIN(pybind11)
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NAMESPACE_BEGIN(detail)
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template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Alloc>> {
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typedef std::vector<Type, Alloc> vector_type;
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typedef type_caster<Type> value_conv;
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public:
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bool load(handle src, bool convert) {
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list l(src, true);
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if (!l.check())
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return false;
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value.reserve(l.size());
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value.clear();
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value_conv conv;
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for (auto it : l) {
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if (!conv.load(it, convert))
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return false;
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value.push_back((Type) conv);
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}
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return true;
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}
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static handle cast(const vector_type &src, return_value_policy policy, handle parent) {
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list l(src.size());
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size_t index = 0;
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for (auto const &value: src) {
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object value_ = object(value_conv::cast(value, policy, parent), false);
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if (!value_)
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return handle();
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PyList_SET_ITEM(l.ptr(), index++, value_.release().ptr()); // steals a reference
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}
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return l.release();
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}
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PYBIND11_TYPE_CASTER(vector_type, _("list<") + value_conv::name() + _(">"));
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};
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template <typename Type, size_t Size> struct type_caster<std::array<Type, Size>> {
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typedef std::array<Type, Size> array_type;
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typedef type_caster<Type> value_conv;
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public:
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bool load(handle src, bool convert) {
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list l(src, true);
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if (!l.check())
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return false;
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if (l.size() != Size)
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return false;
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value_conv conv;
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size_t ctr = 0;
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for (auto it : l) {
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if (!conv.load(it, convert))
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return false;
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value[ctr++] = (Type) conv;
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}
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return true;
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}
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static handle cast(const array_type &src, return_value_policy policy, handle parent) {
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list l(Size);
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size_t index = 0;
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for (auto const &value: src) {
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object value_ = object(value_conv::cast(value, policy, parent), false);
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if (!value_)
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return handle();
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PyList_SET_ITEM(l.ptr(), index++, value_.release().ptr()); // steals a reference
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}
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return l.release();
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}
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PYBIND11_TYPE_CASTER(array_type, _("list<") + value_conv::name() + _(">") + _("[") + _<Size>() + _("]"));
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};
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template <typename Key, typename Compare, typename Alloc> struct type_caster<std::set<Key, Compare, Alloc>> {
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typedef std::set<Key, Compare, Alloc> type;
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template <typename Type, typename Key> struct set_caster {
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typedef Type type;
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typedef type_caster<Key> key_conv;
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public:
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bool load(handle src, bool convert) {
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pybind11::set s(src, true);
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if (!s.check())
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@ -116,12 +51,12 @@ public:
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}
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return s.release();
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}
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PYBIND11_TYPE_CASTER(type, _("set<") + key_conv::name() + _(">"));
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};
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template <typename Key, typename Value, typename Compare, typename Alloc> struct type_caster<std::map<Key, Value, Compare, Alloc>> {
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public:
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typedef std::map<Key, Value, Compare, Alloc> type;
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template <typename Type, typename Key, typename Value> struct map_caster {
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typedef Type type;
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typedef type_caster<Key> key_conv;
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typedef type_caster<Value> value_conv;
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@ -156,6 +91,85 @@ public:
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PYBIND11_TYPE_CASTER(type, _("dict<") + key_conv::name() + _(", ") + value_conv::name() + _(">"));
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};
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template <typename Type, typename Alloc> struct type_caster<std::vector<Type, Alloc>> {
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typedef std::vector<Type, Alloc> vector_type;
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typedef type_caster<Type> value_conv;
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bool load(handle src, bool convert) {
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list l(src, true);
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if (!l.check())
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return false;
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value.reserve(l.size());
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value.clear();
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value_conv conv;
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for (auto it : l) {
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if (!conv.load(it, convert))
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return false;
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value.push_back((Type) conv);
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}
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return true;
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}
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static handle cast(const vector_type &src, return_value_policy policy, handle parent) {
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list l(src.size());
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size_t index = 0;
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for (auto const &value: src) {
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object value_ = object(value_conv::cast(value, policy, parent), false);
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if (!value_)
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return handle();
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PyList_SET_ITEM(l.ptr(), index++, value_.release().ptr()); // steals a reference
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}
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return l.release();
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}
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PYBIND11_TYPE_CASTER(vector_type, _("list<") + value_conv::name() + _(">"));
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};
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template <typename Type, size_t Size> struct type_caster<std::array<Type, Size>> {
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typedef std::array<Type, Size> array_type;
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typedef type_caster<Type> value_conv;
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bool load(handle src, bool convert) {
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list l(src, true);
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if (!l.check())
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return false;
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if (l.size() != Size)
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return false;
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value_conv conv;
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size_t ctr = 0;
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for (auto it : l) {
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if (!conv.load(it, convert))
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return false;
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value[ctr++] = (Type) conv;
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}
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return true;
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}
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static handle cast(const array_type &src, return_value_policy policy, handle parent) {
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list l(Size);
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size_t index = 0;
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for (auto const &value: src) {
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object value_ = object(value_conv::cast(value, policy, parent), false);
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if (!value_)
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return handle();
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PyList_SET_ITEM(l.ptr(), index++, value_.release().ptr()); // steals a reference
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}
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return l.release();
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}
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PYBIND11_TYPE_CASTER(array_type, _("list<") + value_conv::name() + _(">") + _("[") + _<Size>() + _("]"));
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};
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template <typename Key, typename Compare, typename Alloc> struct type_caster<std::set<Key, Compare, Alloc>>
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: set_caster<std::set<Key, Compare, Alloc>, Key> { };
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template <typename Key, typename Hash, typename Equal, typename Alloc> struct type_caster<std::unordered_set<Key, Hash, Equal, Alloc>>
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: set_caster<std::unordered_set<Key, Hash, Equal, Alloc>, Key> { };
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template <typename Key, typename Value, typename Compare, typename Alloc> struct type_caster<std::map<Key, Value, Compare, Alloc>>
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: map_caster<std::map<Key, Value, Compare, Alloc>, Key, Value> { };
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template <typename Key, typename Value, typename Hash, typename Equal, typename Alloc> struct type_caster<std::unordered_map<Key, Value, Hash, Equal, Alloc>>
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: map_caster<std::unordered_map<Key, Value, Hash, Equal, Alloc>, Key, Value> { };
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NAMESPACE_END(detail)
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inline std::ostream &operator<<(std::ostream &os, const handle &obj) {
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