1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
// This file was generated by gir (https://github.com/gtk-rs/gir)
// from gir-files (https://github.com/gtk-rs/gir-files)
// DO NOT EDIT

use crate::{AsyncResult, Cancellable, SocketAddress};
use glib::{prelude::*, translate::*};
use std::{boxed::Box as Box_, fmt, pin::Pin, ptr};

glib::wrapper! {
    /// [`SocketAddressEnumerator`][crate::SocketAddressEnumerator] is an enumerator type for [`SocketAddress`][crate::SocketAddress]
    /// instances. It is returned by enumeration functions such as
    /// [`SocketConnectableExt::enumerate()`][crate::prelude::SocketConnectableExt::enumerate()], which returns a [`SocketAddressEnumerator`][crate::SocketAddressEnumerator]
    /// to list each [`SocketAddress`][crate::SocketAddress] which could be used to connect to that
    /// [`SocketConnectable`][crate::SocketConnectable].
    ///
    /// Enumeration is typically a blocking operation, so the asynchronous methods
    /// [`SocketAddressEnumeratorExt::next_async()`][crate::prelude::SocketAddressEnumeratorExt::next_async()] and
    /// `g_socket_address_enumerator_next_finish()` should be used where possible.
    ///
    /// Each [`SocketAddressEnumerator`][crate::SocketAddressEnumerator] can only be enumerated once. Once
    /// [`SocketAddressEnumeratorExt::next()`][crate::prelude::SocketAddressEnumeratorExt::next()] has returned [`None`], further
    /// enumeration with that [`SocketAddressEnumerator`][crate::SocketAddressEnumerator] is not possible, and it can
    /// be unreffed.
    ///
    /// This is an Abstract Base Class, you cannot instantiate it.
    ///
    /// # Implements
    ///
    /// [`SocketAddressEnumeratorExt`][trait@crate::prelude::SocketAddressEnumeratorExt], [`trait@glib::ObjectExt`]
    #[doc(alias = "GSocketAddressEnumerator")]
    pub struct SocketAddressEnumerator(Object<ffi::GSocketAddressEnumerator, ffi::GSocketAddressEnumeratorClass>);

    match fn {
        type_ => || ffi::g_socket_address_enumerator_get_type(),
    }
}

impl SocketAddressEnumerator {
    pub const NONE: Option<&'static SocketAddressEnumerator> = None;
}

mod sealed {
    pub trait Sealed {}
    impl<T: super::IsA<super::SocketAddressEnumerator>> Sealed for T {}
}

/// Trait containing all [`struct@SocketAddressEnumerator`] methods.
///
/// # Implementors
///
/// [`SocketAddressEnumerator`][struct@crate::SocketAddressEnumerator]
pub trait SocketAddressEnumeratorExt:
    IsA<SocketAddressEnumerator> + sealed::Sealed + 'static
{
    /// Retrieves the next [`SocketAddress`][crate::SocketAddress] from `self`. Note that this
    /// may block for some amount of time. (Eg, a [`NetworkAddress`][crate::NetworkAddress] may need
    /// to do a DNS lookup before it can return an address.) Use
    /// [`next_async()`][Self::next_async()] if you need to avoid
    /// blocking.
    ///
    /// If `self` is expected to yield addresses, but for some reason
    /// is unable to (eg, because of a DNS error), then the first call to
    /// [`next()`][Self::next()] will return an appropriate error
    /// in *`error`. However, if the first call to
    /// [`next()`][Self::next()] succeeds, then any further
    /// internal errors (other than `cancellable` being triggered) will be
    /// ignored.
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore.
    ///
    /// # Returns
    ///
    /// a [`SocketAddress`][crate::SocketAddress] (owned by the caller), or [`None`] on
    ///  error (in which case *`error` will be set) or if there are no
    ///  more addresses.
    #[doc(alias = "g_socket_address_enumerator_next")]
    fn next(
        &self,
        cancellable: Option<&impl IsA<Cancellable>>,
    ) -> Result<Option<SocketAddress>, glib::Error> {
        unsafe {
            let mut error = ptr::null_mut();
            let ret = ffi::g_socket_address_enumerator_next(
                self.as_ref().to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                &mut error,
            );
            if error.is_null() {
                Ok(from_glib_full(ret))
            } else {
                Err(from_glib_full(error))
            }
        }
    }

    /// Asynchronously retrieves the next [`SocketAddress`][crate::SocketAddress] from `self`
    /// and then calls `callback`, which must call
    /// `g_socket_address_enumerator_next_finish()` to get the result.
    ///
    /// It is an error to call this multiple times before the previous callback has finished.
    /// ## `cancellable`
    /// optional [`Cancellable`][crate::Cancellable] object, [`None`] to ignore.
    /// ## `callback`
    /// a `GAsyncReadyCallback` to call
    ///  when the request is satisfied
    #[doc(alias = "g_socket_address_enumerator_next_async")]
    fn next_async<P: FnOnce(Result<Option<SocketAddress>, glib::Error>) + 'static>(
        &self,
        cancellable: Option<&impl IsA<Cancellable>>,
        callback: P,
    ) {
        let main_context = glib::MainContext::ref_thread_default();
        let is_main_context_owner = main_context.is_owner();
        let has_acquired_main_context = (!is_main_context_owner)
            .then(|| main_context.acquire().ok())
            .flatten();
        assert!(
            is_main_context_owner || has_acquired_main_context.is_some(),
            "Async operations only allowed if the thread is owning the MainContext"
        );

        let user_data: Box_<glib::thread_guard::ThreadGuard<P>> =
            Box_::new(glib::thread_guard::ThreadGuard::new(callback));
        unsafe extern "C" fn next_async_trampoline<
            P: FnOnce(Result<Option<SocketAddress>, glib::Error>) + 'static,
        >(
            _source_object: *mut glib::gobject_ffi::GObject,
            res: *mut crate::ffi::GAsyncResult,
            user_data: glib::ffi::gpointer,
        ) {
            let mut error = ptr::null_mut();
            let ret = ffi::g_socket_address_enumerator_next_finish(
                _source_object as *mut _,
                res,
                &mut error,
            );
            let result = if error.is_null() {
                Ok(from_glib_full(ret))
            } else {
                Err(from_glib_full(error))
            };
            let callback: Box_<glib::thread_guard::ThreadGuard<P>> =
                Box_::from_raw(user_data as *mut _);
            let callback: P = callback.into_inner();
            callback(result);
        }
        let callback = next_async_trampoline::<P>;
        unsafe {
            ffi::g_socket_address_enumerator_next_async(
                self.as_ref().to_glib_none().0,
                cancellable.map(|p| p.as_ref()).to_glib_none().0,
                Some(callback),
                Box_::into_raw(user_data) as *mut _,
            );
        }
    }

    fn next_future(
        &self,
    ) -> Pin<
        Box_<
            dyn std::future::Future<Output = Result<Option<SocketAddress>, glib::Error>> + 'static,
        >,
    > {
        Box_::pin(crate::GioFuture::new(
            self,
            move |obj, cancellable, send| {
                obj.next_async(Some(cancellable), move |res| {
                    send.resolve(res);
                });
            },
        ))
    }
}

impl<O: IsA<SocketAddressEnumerator>> SocketAddressEnumeratorExt for O {}

impl fmt::Display for SocketAddressEnumerator {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        f.write_str("SocketAddressEnumerator")
    }
}