more flexible function creation syntax

.gitignore

@@ -18,3 +18,4 @@ Debug
 .vs
 CTestTestfile.cmake
 Testing
+autogen

include/pybind/cast.h

@@ -8,12 +8,11 @@
     BSD-style license that can be found in the LICENSE file.
 */
 
-#if !defined(__PYBIND_CAST)
-#define __PYBIND_CAST
+#pragma once
 
-#include "pytypes.h"
-#include "mpl.h"
-#include "typeid.h"
+#include <pybind/pytypes.h>
+#include <pybind/mpl.h>
+#include <pybind/typeid.h>
 #include <map>
 #include <array>
 
@@ -474,10 +473,11 @@ TYPE_CASTER_PYTYPE(int_)
 TYPE_CASTER_PYTYPE(list)
 TYPE_CASTER_PYTYPE(slice)
 TYPE_CASTER_PYTYPE(tuple)
+TYPE_CASTER_PYTYPE(function)
 
 #undef TYPE_CASTER
-#undef TYPE_CASTER_NUMBER
 #undef TYPE_CASTER_PYTYPE
+#undef TYPE_CASTER_NUMBER
 
 NAMESPACE_END(detail)
 
@@ -522,5 +522,3 @@ template <typename ... Args> inline object handle::call(Args&&... args_) {
 }
 
 NAMESPACE_END(pybind)
-
-#endif /* __PYBIND_CAST */

include/pybind/common.h

@@ -7,8 +7,7 @@
     BSD-style license that can be found in the LICENSE file.
 */
 
-#if !defined(__PYBIND_COMMON_H)
-#define __PYBIND_COMMON_H
+#pragma once
 
 #if !defined(NAMESPACE_BEGIN)
 #define NAMESPACE_BEGIN(name) namespace name {
@@ -145,5 +144,3 @@ inline internals &get_internals();
 
 NAMESPACE_END(detail)
 NAMESPACE_END(pybind)
-
-#endif /* __PYBIND_COMMON_H */

include/pybind/mpl.h

@@ -7,10 +7,9 @@
     BSD-style license that can be found in the LICENSE file.
 */
 
-#if !defined(__PYBIND_MPL_H)
-#define __PYBIND_MPL_H
+#pragma once
 
-#include "common.h"
+#include <pybind/common.h>
 #include <tuple>
 
 NAMESPACE_BEGIN(pybind)
@@ -80,7 +79,15 @@ template <> struct tuple_dispatch<void> {
 NAMESPACE_END(detail)
 
 /// For lambda functions delegate to their 'operator()'
-template <typename T> struct function_traits : public function_traits<typename detail::make_function_type<T>> { };
+template <typename T> struct function_traits : function_traits<typename detail::make_function_type<T>> { };
+
+/* Deal with reference arguments */
+template <typename ReturnType, typename... Args>
+    struct function_traits<ReturnType(*&)(Args...)> : function_traits<ReturnType(*)(Args...)> {};
+template <typename ClassType, typename ReturnType, typename... Args>
+    struct function_traits<ReturnType(ClassType::*&)(Args...)> : function_traits<ReturnType(ClassType::*)(Args...)> {};
+template <typename ClassType, typename ReturnType, typename... Args>
+    struct function_traits<ReturnType(ClassType::*&)(Args...) const> : function_traits<ReturnType(ClassType::*)(Args...) const> {};
 
 /// Type traits for function pointers
 template <typename ReturnType, typename... Args>
@@ -186,5 +193,3 @@ struct function_traits<std::function<ReturnType(Args...)>> {
 
 NAMESPACE_END(mpl)
 NAMESPACE_END(pybind)
-
-#endif /* __PYBIND_MPL_H */

include/pybind/operators.h

@@ -7,10 +7,9 @@
     BSD-style license that can be found in the LICENSE file.
 */
 
-#if !defined(__PYBIND_OPERATOR)
-#define __PYBIND_OPERATOR
+#pragma once
 
-#include "pybind.h"
+#include <pybind/pybind.h>
 #include <type_traits>
 
 NAMESPACE_BEGIN(pybind)
@@ -147,5 +146,3 @@ NAMESPACE_END(detail)
 using detail::self;
 
 NAMESPACE_END(pybind)
-
-#endif /* __PYBIND_OPERATOR */

include/pybind/pytypes.h

@@ -7,10 +7,9 @@
     BSD-style license that can be found in the LICENSE file.
 */
 
-#if !defined(__PYBIND_PYTYPES_H)
-#define __PYBIND_PYTYPES_H
+#pragma once
 
-#include "common.h"
+#include <pybind/common.h>
 #include <utility>
 
 NAMESPACE_BEGIN(pybind)
@@ -208,7 +207,7 @@ inline detail::accessor handle::attr(const char *key) { return detail::accessor(
 
 #define PYTHON_OBJECT_DEFAULT(Name, Parent, CheckFun) \
     PYTHON_OBJECT(Name, Parent, CheckFun) \
-    Name() : object() { }
+    Name() : Parent() { }
 
 class str : public object {
 public:
@@ -295,6 +294,11 @@ public:
     void append(const object &object) { PyList_Append(m_ptr, (PyObject *) object.ptr()); }
 };
 
+class function : public object {
+public:
+    PYTHON_OBJECT_DEFAULT(function, object, PyFunction_Check)
+};
+
 class buffer : public object {
 public:
     PYTHON_OBJECT_DEFAULT(buffer, object, PyObject_CheckBuffer)
@@ -335,5 +339,3 @@ inline internals &get_internals() {
 }
 NAMESPACE_END(detail)
 NAMESPACE_END(pybind)
-
-#endif /* __PYBIND_PYTYPES_H */

include/pybind/typeid.h

@@ -7,10 +7,9 @@
     BSD-style license that can be found in the LICENSE file.
 */
 
-#if !defined(__PYBIND_TYPEID_H)
-#define __PYBIND_TYPEID_H
+#pragma once
 
-#include "common.h"
+#include <pybind/typeid.h>
 #include <cstdio>
 #include <cstdlib>
 #if defined(__GNUG__)
@@ -48,6 +47,3 @@ template <typename T> static std::string type_id() {
 }
 
 NAMESPACE_END(pybind)
-
-#endif /* __PYBIND_TYPEID_H */
-