| /* |
| pybind11/operator.h: Metatemplates for operator overloading |
| |
| Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch> |
| |
| All rights reserved. Use of this source code is governed by a |
| BSD-style license that can be found in the LICENSE file. |
| */ |
| |
| #pragma once |
| |
| #include "pybind11.h" |
| |
| #if defined(__clang__) && !defined(__INTEL_COMPILER) |
| # pragma clang diagnostic ignored "-Wunsequenced" // multiple unsequenced modifications to 'self' (when using def(py::self OP Type())) |
| #elif defined(_MSC_VER) |
| # pragma warning(push) |
| # pragma warning(disable: 4127) // warning C4127: Conditional expression is constant |
| #endif |
| |
| NAMESPACE_BEGIN(PYBIND11_NAMESPACE) |
| NAMESPACE_BEGIN(detail) |
| |
| /// Enumeration with all supported operator types |
| enum op_id : int { |
| op_add, op_sub, op_mul, op_div, op_mod, op_divmod, op_pow, op_lshift, |
| op_rshift, op_and, op_xor, op_or, op_neg, op_pos, op_abs, op_invert, |
| op_int, op_long, op_float, op_str, op_cmp, op_gt, op_ge, op_lt, op_le, |
| op_eq, op_ne, op_iadd, op_isub, op_imul, op_idiv, op_imod, op_ilshift, |
| op_irshift, op_iand, op_ixor, op_ior, op_complex, op_bool, op_nonzero, |
| op_repr, op_truediv, op_itruediv, op_hash |
| }; |
| |
| enum op_type : int { |
| op_l, /* base type on left */ |
| op_r, /* base type on right */ |
| op_u /* unary operator */ |
| }; |
| |
| struct self_t { }; |
| static const self_t self = self_t(); |
| |
| /// Type for an unused type slot |
| struct undefined_t { }; |
| |
| /// Don't warn about an unused variable |
| inline self_t __self() { return self; } |
| |
| /// base template of operator implementations |
| template <op_id, op_type, typename B, typename L, typename R> struct op_impl { }; |
| |
| /// Operator implementation generator |
| template <op_id id, op_type ot, typename L, typename R> struct op_ { |
| template <typename Class, typename... Extra> void execute(Class &cl, const Extra&... extra) const { |
| using Base = typename Class::type; |
| using L_type = conditional_t<std::is_same<L, self_t>::value, Base, L>; |
| using R_type = conditional_t<std::is_same<R, self_t>::value, Base, R>; |
| using op = op_impl<id, ot, Base, L_type, R_type>; |
| cl.def(op::name(), &op::execute, is_operator(), extra...); |
| #if PY_MAJOR_VERSION < 3 |
| if (id == op_truediv || id == op_itruediv) |
| cl.def(id == op_itruediv ? "__idiv__" : ot == op_l ? "__div__" : "__rdiv__", |
| &op::execute, is_operator(), extra...); |
| #endif |
| } |
| template <typename Class, typename... Extra> void execute_cast(Class &cl, const Extra&... extra) const { |
| using Base = typename Class::type; |
| using L_type = conditional_t<std::is_same<L, self_t>::value, Base, L>; |
| using R_type = conditional_t<std::is_same<R, self_t>::value, Base, R>; |
| using op = op_impl<id, ot, Base, L_type, R_type>; |
| cl.def(op::name(), &op::execute_cast, is_operator(), extra...); |
| #if PY_MAJOR_VERSION < 3 |
| if (id == op_truediv || id == op_itruediv) |
| cl.def(id == op_itruediv ? "__idiv__" : ot == op_l ? "__div__" : "__rdiv__", |
| &op::execute, is_operator(), extra...); |
| #endif |
| } |
| }; |
| |
| #define PYBIND11_BINARY_OPERATOR(id, rid, op, expr) \ |
| template <typename B, typename L, typename R> struct op_impl<op_##id, op_l, B, L, R> { \ |
| static char const* name() { return "__" #id "__"; } \ |
| static auto execute(const L &l, const R &r) -> decltype(expr) { return (expr); } \ |
| static B execute_cast(const L &l, const R &r) { return B(expr); } \ |
| }; \ |
| template <typename B, typename L, typename R> struct op_impl<op_##id, op_r, B, L, R> { \ |
| static char const* name() { return "__" #rid "__"; } \ |
| static auto execute(const R &r, const L &l) -> decltype(expr) { return (expr); } \ |
| static B execute_cast(const R &r, const L &l) { return B(expr); } \ |
| }; \ |
| inline op_<op_##id, op_l, self_t, self_t> op(const self_t &, const self_t &) { \ |
| return op_<op_##id, op_l, self_t, self_t>(); \ |
| } \ |
| template <typename T> op_<op_##id, op_l, self_t, T> op(const self_t &, const T &) { \ |
| return op_<op_##id, op_l, self_t, T>(); \ |
| } \ |
| template <typename T> op_<op_##id, op_r, T, self_t> op(const T &, const self_t &) { \ |
| return op_<op_##id, op_r, T, self_t>(); \ |
| } |
| |
| #define PYBIND11_INPLACE_OPERATOR(id, op, expr) \ |
| template <typename B, typename L, typename R> struct op_impl<op_##id, op_l, B, L, R> { \ |
| static char const* name() { return "__" #id "__"; } \ |
| static auto execute(L &l, const R &r) -> decltype(expr) { return expr; } \ |
| static B execute_cast(L &l, const R &r) { return B(expr); } \ |
| }; \ |
| template <typename T> op_<op_##id, op_l, self_t, T> op(const self_t &, const T &) { \ |
| return op_<op_##id, op_l, self_t, T>(); \ |
| } |
| |
| #define PYBIND11_UNARY_OPERATOR(id, op, expr) \ |
| template <typename B, typename L> struct op_impl<op_##id, op_u, B, L, undefined_t> { \ |
| static char const* name() { return "__" #id "__"; } \ |
| static auto execute(const L &l) -> decltype(expr) { return expr; } \ |
| static B execute_cast(const L &l) { return B(expr); } \ |
| }; \ |
| inline op_<op_##id, op_u, self_t, undefined_t> op(const self_t &) { \ |
| return op_<op_##id, op_u, self_t, undefined_t>(); \ |
| } |
| |
| PYBIND11_BINARY_OPERATOR(sub, rsub, operator-, l - r) |
| PYBIND11_BINARY_OPERATOR(add, radd, operator+, l + r) |
| PYBIND11_BINARY_OPERATOR(mul, rmul, operator*, l * r) |
| PYBIND11_BINARY_OPERATOR(truediv, rtruediv, operator/, l / r) |
| PYBIND11_BINARY_OPERATOR(mod, rmod, operator%, l % r) |
| PYBIND11_BINARY_OPERATOR(lshift, rlshift, operator<<, l << r) |
| PYBIND11_BINARY_OPERATOR(rshift, rrshift, operator>>, l >> r) |
| PYBIND11_BINARY_OPERATOR(and, rand, operator&, l & r) |
| PYBIND11_BINARY_OPERATOR(xor, rxor, operator^, l ^ r) |
| PYBIND11_BINARY_OPERATOR(eq, eq, operator==, l == r) |
| PYBIND11_BINARY_OPERATOR(ne, ne, operator!=, l != r) |
| PYBIND11_BINARY_OPERATOR(or, ror, operator|, l | r) |
| PYBIND11_BINARY_OPERATOR(gt, lt, operator>, l > r) |
| PYBIND11_BINARY_OPERATOR(ge, le, operator>=, l >= r) |
| PYBIND11_BINARY_OPERATOR(lt, gt, operator<, l < r) |
| PYBIND11_BINARY_OPERATOR(le, ge, operator<=, l <= r) |
| //PYBIND11_BINARY_OPERATOR(pow, rpow, pow, std::pow(l, r)) |
| PYBIND11_INPLACE_OPERATOR(iadd, operator+=, l += r) |
| PYBIND11_INPLACE_OPERATOR(isub, operator-=, l -= r) |
| PYBIND11_INPLACE_OPERATOR(imul, operator*=, l *= r) |
| PYBIND11_INPLACE_OPERATOR(itruediv, operator/=, l /= r) |
| PYBIND11_INPLACE_OPERATOR(imod, operator%=, l %= r) |
| PYBIND11_INPLACE_OPERATOR(ilshift, operator<<=, l <<= r) |
| PYBIND11_INPLACE_OPERATOR(irshift, operator>>=, l >>= r) |
| PYBIND11_INPLACE_OPERATOR(iand, operator&=, l &= r) |
| PYBIND11_INPLACE_OPERATOR(ixor, operator^=, l ^= r) |
| PYBIND11_INPLACE_OPERATOR(ior, operator|=, l |= r) |
| PYBIND11_UNARY_OPERATOR(neg, operator-, -l) |
| PYBIND11_UNARY_OPERATOR(pos, operator+, +l) |
| PYBIND11_UNARY_OPERATOR(abs, abs, std::abs(l)) |
| PYBIND11_UNARY_OPERATOR(hash, hash, std::hash<L>()(l)) |
| PYBIND11_UNARY_OPERATOR(invert, operator~, (~l)) |
| PYBIND11_UNARY_OPERATOR(bool, operator!, !!l) |
| PYBIND11_UNARY_OPERATOR(int, int_, (int) l) |
| PYBIND11_UNARY_OPERATOR(float, float_, (double) l) |
| |
| #undef PYBIND11_BINARY_OPERATOR |
| #undef PYBIND11_INPLACE_OPERATOR |
| #undef PYBIND11_UNARY_OPERATOR |
| NAMESPACE_END(detail) |
| |
| using detail::self; |
| |
| NAMESPACE_END(PYBIND11_NAMESPACE) |
| |
| #if defined(_MSC_VER) |
| # pragma warning(pop) |
| #endif |
