Function check_modifiers 

pub fn check_modifiers(modifiers: &[Modifier]) -> Result<(), String>

Check that a modifier chain sets at most one operator and combines only modifiers that compose.

Returns a description of the first conflict found.

Examples

use rsigma_parser::Modifier;
use rsigma_parser::validate::check_modifiers;

assert!(check_modifiers(&[Modifier::Contains, Modifier::All]).is_ok());
assert!(check_modifiers(&[Modifier::Contains, Modifier::Re]).is_err());
assert!(check_modifiers(&[Modifier::IgnoreCase]).is_err());