test_operator_overloading.cpp revision 11986:c12e4625ab56 
1/*
2    tests/test_operator_overloading.cpp -- operator overloading
3
4    Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
5
6    All rights reserved. Use of this source code is governed by a
7    BSD-style license that can be found in the LICENSE file.
8*/
9
10#include "pybind11_tests.h"
11#include "constructor_stats.h"
12#include <pybind11/operators.h>
13
14class Vector2 {
15public:
16    Vector2(float x, float y) : x(x), y(y) { print_created(this, toString()); }
17    Vector2(const Vector2 &v) : x(v.x), y(v.y) { print_copy_created(this); }
18    Vector2(Vector2 &&v) : x(v.x), y(v.y) { print_move_created(this); v.x = v.y = 0; }
19    ~Vector2() { print_destroyed(this); }
20
21    std::string toString() const {
22        return "[" + std::to_string(x) + ", " + std::to_string(y) + "]";
23    }
24
25    void operator=(const Vector2 &v) {
26        print_copy_assigned(this);
27        x = v.x;
28        y = v.y;
29    }
30
31    void operator=(Vector2 &&v) {
32        print_move_assigned(this);
33        x = v.x; y = v.y; v.x = v.y = 0;
34    }
35
36    Vector2 operator+(const Vector2 &v) const { return Vector2(x + v.x, y + v.y); }
37    Vector2 operator-(const Vector2 &v) const { return Vector2(x - v.x, y - v.y); }
38    Vector2 operator-(float value) const { return Vector2(x - value, y - value); }
39    Vector2 operator+(float value) const { return Vector2(x + value, y + value); }
40    Vector2 operator*(float value) const { return Vector2(x * value, y * value); }
41    Vector2 operator/(float value) const { return Vector2(x / value, y / value); }
42    Vector2& operator+=(const Vector2 &v) { x += v.x; y += v.y; return *this; }
43    Vector2& operator-=(const Vector2 &v) { x -= v.x; y -= v.y; return *this; }
44    Vector2& operator*=(float v) { x *= v; y *= v; return *this; }
45    Vector2& operator/=(float v) { x /= v; y /= v; return *this; }
46
47    friend Vector2 operator+(float f, const Vector2 &v) { return Vector2(f + v.x, f + v.y); }
48    friend Vector2 operator-(float f, const Vector2 &v) { return Vector2(f - v.x, f - v.y); }
49    friend Vector2 operator*(float f, const Vector2 &v) { return Vector2(f * v.x, f * v.y); }
50    friend Vector2 operator/(float f, const Vector2 &v) { return Vector2(f / v.x, f / v.y); }
51private:
52    float x, y;
53};
54
55test_initializer operator_overloading([](py::module &m) {
56    py::class_<Vector2>(m, "Vector2")
57        .def(py::init<float, float>())
58        .def(py::self + py::self)
59        .def(py::self + float())
60        .def(py::self - py::self)
61        .def(py::self - float())
62        .def(py::self * float())
63        .def(py::self / float())
64        .def(py::self += py::self)
65        .def(py::self -= py::self)
66        .def(py::self *= float())
67        .def(py::self /= float())
68        .def(float() + py::self)
69        .def(float() - py::self)
70        .def(float() * py::self)
71        .def(float() / py::self)
72        .def("__str__", &Vector2::toString)
73        ;
74
75    m.attr("Vector") = m.attr("Vector2");
76});
77