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use std::ops::Drop;
use std::ptr;
use supercow::{Phantomcow, Supercow};
use error::Result;
use ffi;
use ffi::Sort;
use Database;
use Messages;
use MessageOwner;
use Threads;
use DatabaseExt;
use utils::ScopedSupercow;
#[derive(Debug)]
pub struct Query<'d> {
pub(crate) ptr: *mut ffi::notmuch_query_t,
marker: Phantomcow<'d, Database>,
}
impl<'d> Drop for Query<'d> {
fn drop(&mut self) {
unsafe { ffi::notmuch_query_destroy(self.ptr) };
}
}
impl<'d> MessageOwner for Query<'d> {}
impl<'d> Query<'d> {
pub(crate) fn from_ptr<O>(ptr: *mut ffi::notmuch_query_t, owner: O) -> Query<'d>
where
O: Into<Phantomcow<'d, Database>>,
{
Query {
ptr,
marker: owner.into(),
}
}
pub fn create<D>(db: D, query_string: &str) -> Result<Self>
where
D: Into<Supercow<'d, Database>>,
{
<Database as DatabaseExt>::create_query(db, query_string)
}
/// Specify the sorting desired for this query.
pub fn set_sort(self: &Self, sort: Sort) {
unsafe { ffi::notmuch_query_set_sort(self.ptr, sort.into()) }
}
/// Return the sort specified for this query. See
/// `set_sort`.
pub fn sort(self: &Self) -> Sort {
unsafe { ffi::notmuch_query_get_sort(self.ptr) }.into()
}
/// Filter messages according to the query and return
pub fn search_messages<'q>(self: &'d Self) -> Result<Messages<'q, Self>> {
<Query as QueryExt>::search_messages(self)
}
pub fn count_messages(self: &Self) -> Result<u32> {
let mut cnt = 0;
unsafe { ffi::notmuch_query_count_messages(self.ptr, &mut cnt) }.as_result()?;
Ok(cnt)
}
pub fn search_threads<'q>(self: &'d Self) -> Result<Threads<'d, 'q>> {
<Query<'d> as QueryExt>::search_threads(self)
}
pub fn count_threads(self: &Self) -> Result<u32> {
let mut cnt = 0;
unsafe { ffi::notmuch_query_count_threads(self.ptr, &mut cnt) }.as_result()?;
Ok(cnt)
}
}
pub trait QueryExt<'d> {
fn search_threads<'q, Q>(query: Q) -> Result<Threads<'d, 'q>>
where
Q: Into<ScopedSupercow<'q, Query<'d>>>,
{
let queryref = query.into();
let mut thrds = ptr::null_mut();
unsafe { ffi::notmuch_query_search_threads(queryref.ptr, &mut thrds) }
.as_result()?;
Ok(Threads::from_ptr(thrds, ScopedSupercow::phantom(queryref)))
}
fn search_messages<'q, Q>(query: Q) -> Result<Messages<'q, Query<'d>>>
where
Q: Into<ScopedSupercow<'q, Query<'d>>>,
{
let queryref = query.into();
let mut msgs = ptr::null_mut();
unsafe { ffi::notmuch_query_search_messages(queryref.ptr, &mut msgs) }
.as_result()?;
Ok(Messages::from_ptr(msgs, ScopedSupercow::phantom(queryref)))
}
}
impl<'d> QueryExt<'d> for Query<'d> {}
unsafe impl<'d> Send for Query<'d> {}
unsafe impl<'d> Sync for Query<'d> {}
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