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use std::ops::Drop;
use std::iter::Iterator;
use std::marker::PhantomData;
use utils::FromPtr;
use Query;
use Thread;
use ffi;
use thread::ThreadOwner;
pub trait ThreadsOwner{}
#[derive(Debug)]
pub(crate) struct ThreadsPtr {
pub ptr: *mut ffi::notmuch_threads_t
}
impl Drop for ThreadsPtr {
fn drop(&mut self) {
unsafe {
ffi::notmuch_threads_destroy(self.ptr)
};
}
}
#[derive(Debug)]
pub struct Threads<'o, Owner: ThreadsOwner>{
handle: ThreadsPtr,
phantom: PhantomData<&'o Owner>,
}
impl<'o, Owner: ThreadsOwner> ThreadOwner for Threads<'o, Owner>{}
impl<'o, Owner: ThreadsOwner> FromPtr<*mut ffi::notmuch_threads_t> for Threads<'o, Owner> {
fn from_ptr(ptr: *mut ffi::notmuch_threads_t) -> Threads<'o, Owner> {
Threads{
handle: ThreadsPtr{ptr},
phantom: PhantomData
}
}
}
impl<'o, Owner: ThreadsOwner> Iterator for Threads<'o, Owner> {
type Item = Thread<'o, Self>;
fn next(self: &mut Self) -> Option<Self::Item> {
let valid = unsafe {
ffi::notmuch_threads_valid(self.handle.ptr)
};
if valid == 0{
return None;
}
let cthread = unsafe {
let t = ffi::notmuch_threads_get(self.handle.ptr);
ffi::notmuch_threads_move_to_next(self.handle.ptr);
t
};
Some(Self::Item::from_ptr(cthread))
}
}
unsafe impl<'o, Owner: ThreadsOwner> Send for Threads<'o, Owner> {}
unsafe impl<'o, Owner: ThreadsOwner> Sync for Threads<'o, Owner> {}
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