operators.hpp

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#pragma once
#include <meta>
 
#include <welder/bind_traits.hpp> // is_unary_operator

 
namespace welder::inline v0::rods::python {

consteval const char* operator_dunder(std::meta::info f) {
    using std::meta::operators;
    const bool unary{::welder::detail::is_unary_operator(f)};
    switch (std::meta::operator_of(f)) {
        case operators::op_plus:    return unary ? "__pos__" : "__add__";
        case operators::op_minus:   return unary ? "__neg__" : "__sub__";
        case operators::op_star:    return unary ? nullptr : "__mul__"; // unary * = deref
        case operators::op_slash:   return "__truediv__";
        case operators::op_percent: return "__mod__";
        case operators::op_tilde:   return "__invert__";
        case operators::op_caret:   return "__xor__";
        case operators::op_ampersand: return unary ? nullptr : "__and__"; // unary & = address-of
        case operators::op_pipe:    return "__or__";
        case operators::op_less_less:       return "__lshift__";
        case operators::op_greater_greater: return "__rshift__";
        case operators::op_equals_equals:      return "__eq__";
        case operators::op_exclamation_equals: return "__ne__";
        case operators::op_less:           return "__lt__";
        case operators::op_greater:        return "__gt__";
        case operators::op_less_equals:    return "__le__";
        case operators::op_greater_equals: return "__ge__";
        case operators::op_parentheses:     return "__call__";
        case operators::op_square_brackets: return "__getitem__";
        default:                            return nullptr;
    }
}
 
} // namespace welder::rods::python