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Bind a C library to BEAM with Zig.

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kinda src result.zig
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src/result.zig 

const beam = @import("beam");

const e = @import("erl_nif");

const std = @import("std");



pub fn nif_with_flags(comptime name: [*c]const u8, comptime arity: usize, comptime f: anytype, comptime flags: u32) type {

    const ns = "Elixir.";

    return struct {

        fn exported(env: beam.env, n: c_int, args: [*c]const beam.term) callconv(.C) beam.term {

            return f(env, n, args) catch |err| {

                const ert = @errorReturnTrace();

                return beam.raise_exception(env, ns ++ "Kinda.CallError", err, ert);

            };

        }

        pub const entry = e.ErlNifFunc{ .name = name, .arity = arity, .fptr = exported, .flags = flags };

    };

}



pub fn nif(comptime name: [*c]const u8, comptime arity: usize, comptime f: anytype) type {

    return nif_with_flags(name, arity, f, 0);

}



pub fn wrap(comptime f: anytype) fn (env: beam.env, n: c_int, args: [*c]const beam.term) callconv(.C) beam.term {

    return nif("", 0, f).exported;

}