src/query.rs


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use std::{
    ops,
    marker,
    ptr,
};

use error::Result;

use ffi;
use utils::{
    NewFromPtr,
};
use Database;
use Messages;


#[derive(Debug)]
pub struct Query<'d>(
    pub(crate) *mut ffi::notmuch_query_t,
    marker::PhantomData<&'d mut Database>,
);


impl<'d> Query<'d> {
    pub fn create(db: &'d Database, query_string: &String) -> Result<Self> {
        db.create_query(query_string)
    }

    /// Filter messages according to the query and return
    pub fn search_messages(self: &Self) -> Result<Messages>
    {
        let mut msgs = ptr::null_mut();
        unsafe {
            msgs = ffi::notmuch_query_search_messages(self.0);
        }

        Ok(Messages::new(msgs))
    }
}

impl<'d> NewFromPtr<*mut ffi::notmuch_query_t> for Query<'d> {
    fn new(ptr: *mut ffi::notmuch_query_t) -> Query<'d> {
        Query(ptr, marker::PhantomData)
    }
}


impl<'d> ops::Drop for Query<'d> {
    fn drop(&mut self) {
        unsafe {
            ffi::notmuch_query_destroy(self.0)
        };
    }
}