Function parse_operator 

pub fn parse_operator(input: &str) -> IResult<&str, Operator>

Parse comparison operators for magic rules

Supports both symbolic and text representations of operators:

• = or == for equality
• != or <> for inequality
• & for bitwise AND

Examples

use libmagic_rs::parser::grammar::parse_operator;
use libmagic_rs::parser::ast::Operator;

assert_eq!(parse_operator("="), Ok(("", Operator::Equal)));
assert_eq!(parse_operator("=="), Ok(("", Operator::Equal)));
assert_eq!(parse_operator("!="), Ok(("", Operator::NotEqual)));
assert_eq!(parse_operator("<>"), Ok(("", Operator::NotEqual)));
assert_eq!(parse_operator("&"), Ok(("", Operator::BitwiseAnd)));

Errors

Returns a nom parsing error if:

• Input does not start with a recognized operator symbol
• Input is empty or contains no valid operator
• Operator syntax is incomplete (e.g., just ! without =)