Code Style: use "#pragma once" in source directory

This replaces header include guards with `#pragma once`.
A couple of include guards are not removed yet (e.g. `__RNA_TYPES_H__`),
because they are used in other places.

This patch has been generated by P1561 followed by `make format`.

Differential Revision: https://developer.blender.org/D8466

source/blender/python/mathutils/mathutils.h

@@ -14,8 +14,7 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#ifndef __MATHUTILS_H__
-#define __MATHUTILS_H__
+#pragma once
 
 /** \file
  * \ingroup pymathutils
@@ -195,5 +194,3 @@ int column_vector_multiplication(float rvec[4], VectorObject *vec, MatrixObject
 /* dynstr as python string utility functions */
 PyObject *mathutils_dynstr_to_py(struct DynStr *ds);
 #endif
-
-#endif /* __MATHUTILS_H__ */

source/blender/python/mathutils/mathutils_Color.h

@@ -18,8 +18,7 @@
  * \ingroup pymathutils
  */
 
-#ifndef __MATHUTILS_COLOR_H__
-#define __MATHUTILS_COLOR_H__
+#pragma once
 
 extern PyTypeObject color_Type;
 #define ColorObject_Check(v) PyObject_TypeCheck((v), &color_Type)
@@ -42,5 +41,3 @@ PyObject *Color_CreatePyObject_wrap(float col[3], PyTypeObject *base_type) ATTR_
 PyObject *Color_CreatePyObject_cb(PyObject *cb_user,
                                   unsigned char cb_type,
                                   unsigned char cb_subtype) ATTR_WARN_UNUSED_RESULT;
-
-#endif /* __MATHUTILS_COLOR_H__ */

source/blender/python/mathutils/mathutils_Euler.h

@@ -14,8 +14,7 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#ifndef __MATHUTILS_EULER_H__
-#define __MATHUTILS_EULER_H__
+#pragma once
 
 /** \file
  * \ingroup pymathutils
@@ -50,5 +49,3 @@ PyObject *Euler_CreatePyObject_cb(PyObject *cb_user,
                                   unsigned char cb_subtype) ATTR_WARN_UNUSED_RESULT;
 
 short euler_order_from_string(const char *str, const char *error_prefix);
-
-#endif /* __MATHUTILS_EULER_H__ */

source/blender/python/mathutils/mathutils_Matrix.h

@@ -18,8 +18,7 @@
  * \ingroup pymathutils
  */
 
-#ifndef __MATHUTILS_MATRIX_H__
-#define __MATHUTILS_MATRIX_H__
+#pragma once
 
 extern PyTypeObject matrix_Type;
 extern PyTypeObject matrix_access_Type;
@@ -96,5 +95,3 @@ extern struct Mathutils_Callback mathutils_matrix_col_cb;
 extern struct Mathutils_Callback mathutils_matrix_translation_cb;
 
 void matrix_as_3x3(float mat[3][3], MatrixObject *self);
-
-#endif /* __MATHUTILS_MATRIX_H__ */

source/blender/python/mathutils/mathutils_Quaternion.h

@@ -14,8 +14,7 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#ifndef __MATHUTILS_QUATERNION_H__
-#define __MATHUTILS_QUATERNION_H__
+#pragma once
 
 /** \file
  * \ingroup pymathutils
@@ -44,5 +43,3 @@ PyObject *Quaternion_CreatePyObject_wrap(float quat[4],
 PyObject *Quaternion_CreatePyObject_cb(PyObject *cb_user,
                                        unsigned char cb_type,
                                        unsigned char cb_subtype) ATTR_WARN_UNUSED_RESULT;
-
-#endif /* __MATHUTILS_QUATERNION_H__ */

source/blender/python/mathutils/mathutils_Vector.h

@@ -18,8 +18,7 @@
  * \ingroup pymathutils
  */
 
-#ifndef __MATHUTILS_VECTOR_H__
-#define __MATHUTILS_VECTOR_H__
+#pragma once
 
 extern PyTypeObject vector_Type;
 
@@ -48,5 +47,3 @@ PyObject *Vector_CreatePyObject_alloc(float *vec,
                                       const int size,
                                       PyTypeObject *base_type) ATTR_WARN_UNUSED_RESULT
     ATTR_NONNULL(1);
-
-#endif /* __MATHUTILS_VECTOR_H__ */

source/blender/python/mathutils/mathutils_bvhtree.h

@@ -18,8 +18,7 @@
  * \ingroup mathutils
  */
 
-#ifndef __MATHUTILS_BVHTREE_H__
-#define __MATHUTILS_BVHTREE_H__
+#pragma once
 
 PyMODINIT_FUNC PyInit_mathutils_bvhtree(void);
 
@@ -27,5 +26,3 @@ extern PyTypeObject PyBVHTree_Type;
 
 #define PyBVHTree_Check(v) PyObject_TypeCheck((v), &PyBVHTree_Type)
 #define PyBVHTree_CheckExact(v) (Py_TYPE(v) == &PyBVHTree_Type)
-
-#endif /* __MATHUTILS_BVHTREE_H__ */

source/blender/python/mathutils/mathutils_geometry.h

@@ -14,13 +14,10 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#ifndef __MATHUTILS_GEOMETRY_H__
-#define __MATHUTILS_GEOMETRY_H__
+#pragma once
 
 /** \file
  * \ingroup pymathutils
  */
 
 PyMODINIT_FUNC PyInit_mathutils_geometry(void);
-
-#endif /* __MATHUTILS_GEOMETRY_H__ */

source/blender/python/mathutils/mathutils_interpolate.h

@@ -14,13 +14,10 @@
  * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  */
 
-#ifndef __MATHUTILS_INTERPOLATE_H__
-#define __MATHUTILS_INTERPOLATE_H__
+#pragma once
 
 /** \file
  * \ingroup pymathutils
  */
 
 PyMODINIT_FUNC PyInit_mathutils_interpolate(void);
-
-#endif /* __MATHUTILS_INTERPOLATE_H__ */

source/blender/python/mathutils/mathutils_kdtree.h

@@ -18,11 +18,8 @@
  * \ingroup mathutils
  */
 
-#ifndef __MATHUTILS_KDTREE_H__
-#define __MATHUTILS_KDTREE_H__
+#pragma once
 
 PyMODINIT_FUNC PyInit_mathutils_kdtree(void);
 
 extern PyTypeObject PyKDTree_Type;
-
-#endif /* __MATHUTILS_KDTREE_H__ */

source/blender/python/mathutils/mathutils_noise.h

@@ -18,9 +18,6 @@
  * \ingroup mathutils
  */
 
-#ifndef __MATHUTILS_NOISE_H__
-#define __MATHUTILS_NOISE_H__
+#pragma once
 
 PyMODINIT_FUNC PyInit_mathutils_noise(void);
-
-#endif /* __MATHUTILS_NOISE_H__ */