Function parse_logical_xor_expression

crates/gitql-parser/src/parser.rs:1859–1943

(
    context: &mut ParserContext,
    env: &mut Environment,
    tokens: &[Token],
    position: &mut usize,
)

}

fn parse_logical_xor_expression(
    context: &mut ParserContext,
    env: &mut Environment,
    tokens: &[Token],
    position: &mut usize,
) -> Result<Box<dyn Expr>, Box<Diagnostic>> {
    let mut lhs = parse_bitwise_and_expression(context, env, tokens, position)?;

    'parse_expr: while is_current_token(tokens, position, TokenKind::XorKeyword) {
        let operator = &tokens[*position];

        // Consume`XOR` operator
        *position += 1;

        let rhs = parse_bitwise_and_expression(context, env, tokens, position)?;

        let lhs_type = lhs.expr_type();
        let rhs_type = rhs.expr_type();

        let expected_rhs_types = lhs_type.can_perform_logical_xor_op_with();

        // Can perform this operator between LHS and RHS
        if expected_rhs_types.contains(&rhs_type) {
            lhs = Box::new(LogicalExpr {
                left: lhs,
                operator: BinaryLogicalOperator::Xor,
                right: rhs,
            });

            continue 'parse_expr;
        }

        // Check if RHS expr can be implicit casted to Expected LHS type to make this
        // Expression valid
        for expected_type in expected_rhs_types.iter() {
            if !expected_type.has_implicit_cast_from(&rhs) {
                continue;
            }

            let casting = Box::new(CastExpr {
                value: rhs,
                result_type: expected_type.clone(),
            });

            lhs = Box::new(LogicalExpr {
                left: lhs,
                operator: BinaryLogicalOperator::Xor,
                right: casting,
            });

            continue 'parse_expr;
        }

        // Check if LHS expr can be implicit casted to Expected RHS type to make this
        // Expression valid
        let expected_lhs_types = rhs_type.can_perform_logical_xor_op_with();
        for expected_type in expected_lhs_types.iter() {
            if !expected_type.has_implicit_cast_from(&lhs) {