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use std::ops::Drop;
use std::iter::Iterator;
use std::marker::PhantomData;
use ffi;
use utils::{
NewFromPtr,
};
use Query;
use Message;
use Tags;
#[derive(Debug)]
pub struct Messages<'d:'q, 'q>(
// TODO: is this lifetime specifier correct?
// query may outlive messages.
pub(crate) *mut ffi::notmuch_messages_t,
PhantomData<&'q Query<'d>>,
);
impl<'d, 'q> NewFromPtr<*mut ffi::notmuch_messages_t> for Messages<'d, 'q> {
fn new(ptr: *mut ffi::notmuch_messages_t) -> Messages<'d, 'q> {
Messages(ptr, PhantomData)
}
}
impl<'d, 'q> Messages<'d, 'q>{
pub fn collect_tags(self: &'d Self) -> Tags<'d>{
Tags::new(unsafe {
ffi::notmuch_messages_collect_tags(self.0)
})
}
}
impl<'d, 'q> Drop for Messages<'d, 'q> {
fn drop(self: &mut Self) {
let valid = unsafe {
ffi::notmuch_messages_valid(self.0)
};
if valid == 0{
return;
}
unsafe {
ffi::notmuch_messages_destroy(self.0)
};
}
}
impl<'d, 'q> Iterator for Messages<'d, 'q> {
type Item = Message<'d, 'q>;
fn next(&mut self) -> Option<Self::Item> {
let valid = unsafe {
ffi::notmuch_messages_valid(self.0)
};
if valid == 0{
return None
}
let cmsg = unsafe {
let msg = ffi::notmuch_messages_get(self.0);
ffi::notmuch_messages_move_to_next(self.0);
msg
};
Some(Self::Item::new(cmsg))
}
}
unsafe impl<'d, 'q> Send for Messages<'d, 'q>{}
unsafe impl<'d, 'q> Sync for Messages<'d, 'q>{}
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