const std = @import("std");

pub const InvalidRecord = error{InvalidRecord};

pub fn downCast(comptime T: type, n: u64) InvalidRecord!T {
    return std.math.cast(T, n) catch |err| switch (err) {
        error.Overflow => {
            return error.InvalidRecord;
        },
    };
}

pub fn utf8(s: []const u8) InvalidRecord!void {
    if (!std.unicode.utf8ValidateSlice(s)) {
        return error.InvalidRecord;
    }
}