You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: selector.rs
    path of file: ./repos/swc/crates/swc_css_minifier/src/compressor
    
    the code of the file until where you have to start completion: use swc_common::DUMMY_SP;
use swc_css_ast::*;

use super::Compressor;
use crate::util::dedup;

impl Compressor {
    pub(super) fn compress_selector_list(&mut self, selector_list: &mut SelectorList) {
        dedup(&mut selector_list.children);
    }

    pub(super) fn compress_forgiving_selector_list(
        &mut self,
        forgiving_selector_list: &mut ForgivingSelectorList,
    ) {
        dedup(&mut forgiving_selector_list.children);
    }

    pub(super) fn compress_relative_selector_list(
        &mut self,
        relative_selector_list: &mut RelativeSelectorList,
    ) {
        dedup(&mut relative_selector_list.children);
    }

    pub(super) fn compress_forgiving_relative_selector_list(
        &mut self,
        forgiving_relative_selector_list: &mut ForgivingRelativeSelectorList,
    ) {
        dedup(&mut forgiving_relative_selector_list.children);
    }

    pub(super) fn compress_an_plus_b(&mut self, an_plus_b: &mut AnPlusB) {
        match &an_plus_b {
            // `2n+1`, `2n-1`, `2n-3`, etc => `odd`
            AnPlusB::AnPlusBNotation(AnPlusBNotation {
                a: Some(a),
                b: Some(b),
                span,
                ..
            }) if *a == 2 && (*b == 1 || b % 2 == -1) => {
                *an_plus_b = AnPlusB::Ident(Ident {
                    spa
    
    pub(super) fn compress_an_plus_b(&mut self, an_plus_b: &mut AnPlusB) {
        match &an_plus_b {
            // `2n+1`, `2n-1`, `2n-3`, etc => `odd`
            AnPlusB::AnPlusBNotation(AnPlusBNotation {
                a: Some(a),
                b: Some(b),
                span,
                ..
            }) if *a == 2 && (*b == 1 || b % 2 == -1) => {
                *an_plus_b = AnPlusB::Ident(Ident {
                    span: *span,
                    value: "odd".into(),
                    raw: None,
                });
            }
            // `2n-0`, `2n-2`, `2n-4`, etc => `2n`
            AnPlusB::AnPlusBNotation(AnPlusBNotation {
                a: Some(a),
                b: Some(b),
                span,
                ..
            }) if *a == 2 && *b < 0 && b % 2 == 0 => {
                *an_plus_b = AnPlusB::AnPlusBNotation(AnPlusBNotation {
                    span: *span,
                    a: Some(2),
                    a_raw: None,
                    b: None,
                    b_raw: None,
                });
            }
            // `even` => `2n`
            AnPlusB::Ident(Ident { value, span, .. }) if *value == "even" => {
                *an_plus_b = AnPlusB::AnPlusBNotation(AnPlusBNotation {
                    span: *span,
                    a: Some(2),
                    a_raw: None,
                    b: None,
                    b_raw: None,
                });
            }
            // `0n+5` => `5`, `0n-5` => `-5`, etc
            AnPlusB::AnPlusBNotation(AnPlusBNotation {
                a: Some(a),
                b,
                span,
                ..
            }) if *a == 0 => {
                *an_plus_b = AnPlusB::AnPlusBNotation(AnPlusBNotation {
                    span: *span,
                    a: None,
                    a_raw: None,
                    b: *b,
                    b_raw: None,
                });
            }
            // `-5n+0` => `-5n`, etc
            AnPlusB::AnPlusBNotation(AnPlusBNotation {
                a,
                b: Some(b),
                span,
                ..
            }) if *b == 0 => {
                *an_plus_b = AnPlusB::AnPlusBNotation(AnPlusBNotation {
                    span: *span,
                    a: *a,
                    a_raw: None,
                    b: None,
                    b_raw: None,
                });
            }
            _ => {}
        }
    }