//@aux-build:../../ui/auxiliary/proc_macros.rs
//@revisions: private all
//@[private] rustc-env:CLIPPY_CONF_DIR=tests/ui-toml/ref_option/private
//@[all] rustc-env:CLIPPY_CONF_DIR=tests/ui-toml/ref_option/all

#![allow(unused, clippy::needless_lifetimes, clippy::borrowed_box)]
#![warn(clippy::ref_option)]

fn opt_u8(a: Option<&u8>) {}
//~^ ref_option
fn opt_gen<T>(a: Option<&T>) {}
//~^ ref_option
fn opt_string(a: std::option::Option<&String>) {}
//~^ ref_option
fn ret_u8<'a>(p: &'a str) -> Option<&'a u8> {
    //~^ ref_option
    panic!()
}
fn ret_u8_static() -> Option<&'static u8> {
    //~^ ref_option
    panic!()
}
fn mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {}
//~^ ref_option
fn ret_box<'a>() -> Option<&'a Box<u8>> {
    //~^ ref_option
    panic!()
}

pub fn pub_opt_string(a: Option<&String>) {}
//~[all]^ ref_option
pub fn pub_mult_string(a: Option<&String>, b: Option<&Vec<u8>>) {}
//~[all]^ ref_option

pub struct PubStruct;

impl PubStruct {
    pub fn pub_opt_params(&self, a: Option<&()>) {}
    //~[all]^ ref_option
    pub fn pub_opt_ret(&self) -> Option<&String> {
        //~[all]^ ref_option
        panic!()
    }

    fn private_opt_params(&self, a: Option<&()>) {}
    //~^ ref_option
    fn private_opt_ret(&self) -> Option<&String> {
        //~^ ref_option
        panic!()
    }
}

// valid, don't change
fn mut_u8(a: &mut Option<u8>) {}
pub fn pub_mut_u8(a: &mut Option<String>) {}

// might be good to catch in the future
fn mut_u8_ref(a: &mut &Option<u8>) {}
pub fn pub_mut_u8_ref(a: &mut &Option<String>) {}
fn lambdas() {
    // Not handled for now, not sure if we should
    let x = |a: &Option<String>| {};
    let x = |a: &Option<String>| -> &Option<String> { panic!() };
}

pub mod external {
    proc_macros::external!(
        fn opt_u8(a: &Option<u8>) {}
        fn ret_u8<'a>(p: &'a str) -> &'a Option<u8> {
            panic!()
        }
        pub fn pub_opt_u8(a: &Option<u8>) {}

        pub struct PubStruct;
        impl PubStruct {
            pub fn pub_opt_params(&self, a: &Option<()>) {}
            pub fn pub_opt_ret(&self) -> &Option<String> {
                panic!()
            }

            fn private_opt_params(&self, a: &Option<()>) {}
            fn private_opt_ret(&self) -> &Option<String> {
                panic!()
            }
        }
    );
}

pub mod proc_macros {
    proc_macros::with_span!(
        span

        fn opt_u8(a: &Option<u8>) {}
        fn ret_u8<'a>(p: &'a str) -> &'a Option<u8> {
            panic!()
        }
        pub fn pub_opt_u8(a: &Option<u8>) {}

        pub struct PubStruct;
        impl PubStruct {
            pub fn pub_opt_params(&self, a: &Option<()>) {}
            pub fn pub_opt_ret(&self) -> &Option<String> {
                panic!()
            }

            fn private_opt_params(&self, a: &Option<()>) {}
            fn private_opt_ret(&self) -> &Option<String> {
                panic!()
            }
        }
    );
}

fn main() {}