[libvirt] [PATCH Rust 3/4] libvirt-rust: stream: automated lint

[Sahid Orentino Ferdjaoui]

On Tue, Nov 12, 2019 at 02:44:44PM -0700, Zixing Liu wrote:
> * used rustfmt to clean up the code
> 
> Signed-off-by: Zixing Liu <liushuyu at aosc.io>
> ---
>  src/stream.rs | 97 +++++++++++++++++++++++++++++----------------------
>  1 file changed, 56 insertions(+), 41 deletions(-)

NACK, We don't have any rules for that so far. I think that would make
sense at some point but we will probably have to do that in one
iteration and document somewhere our desires.

Thanks,
s.

> diff --git a/src/stream.rs b/src/stream.rs
> index 1ffd186..0d84fd7 100644
> --- a/src/stream.rs
> +++ b/src/stream.rs
> @@ -18,8 +18,8 @@
>  
>  extern crate libc;
>  
> -use connect::Connect;
>  use connect::sys::virConnectPtr;
> +use connect::Connect;
>  use std::convert::TryFrom;
>  
>  use error::Error;
> @@ -33,28 +33,28 @@ pub mod sys {
>  
>  #[link(name = "virt")]
>  extern "C" {
> -    fn virStreamNew(c: virConnectPtr,
> -                    flags: libc::c_uint)
> -                     -> sys::virStreamPtr;
> -    fn virStreamSend(c: sys::virStreamPtr,
> -                     data: *const libc::c_char,
> -                     nbytes: libc::size_t)
> -                     -> libc::c_int;
> -    fn virStreamRecv(c: sys::virStreamPtr,
> -                     data: *mut libc::c_char,
> -                     nbytes: libc::size_t)
> -                     -> libc::c_int;
> +    fn virStreamNew(c: virConnectPtr, flags: libc::c_uint) -> sys::virStreamPtr;
> +    fn virStreamSend(
> +        c: sys::virStreamPtr,
> +        data: *const libc::c_char,
> +        nbytes: libc::size_t,
> +    ) -> libc::c_int;
> +    fn virStreamRecv(
> +        c: sys::virStreamPtr,
> +        data: *mut libc::c_char,
> +        nbytes: libc::size_t,
> +    ) -> libc::c_int;
>      fn virStreamFree(c: sys::virStreamPtr) -> libc::c_int;
>      fn virStreamAbort(c: sys::virStreamPtr) -> libc::c_int;
>      fn virStreamFinish(c: sys::virStreamPtr) -> libc::c_int;
> -    fn virStreamEventAddCallback(c: sys::virStreamPtr,
> -                         event: libc::c_int,
> -                         callback: StreamEventCallback,
> -                         opaque: *const libc::c_void,
> -                         ff: FreeCallback)
> -                         -> libc::c_int;
> -    fn virStreamEventUpdateCallback(c: sys::virStreamPtr,
> -                                    events: libc::c_int) -> libc::c_int;
> +    fn virStreamEventAddCallback(
> +        c: sys::virStreamPtr,
> +        event: libc::c_int,
> +        callback: StreamEventCallback,
> +        opaque: *const libc::c_void,
> +        ff: FreeCallback,
> +    ) -> libc::c_int;
> +    fn virStreamEventUpdateCallback(c: sys::virStreamPtr, events: libc::c_int) -> libc::c_int;
>      fn virStreamEventRemoveCallback(c: sys::virStreamPtr) -> libc::c_int;
>  }
>  
> @@ -71,14 +71,16 @@ pub type StreamEventCallback = extern "C" fn(sys::virStreamPtr, libc::c_int, *co
>  pub type FreeCallback = extern "C" fn(*mut libc::c_void);
>  
>  // wrapper for callbacks
> -extern "C" fn event_callback(c: sys::virStreamPtr, flags: libc::c_int, opaque: *const libc::c_void) {
> -        let flags = flags as StreamFlags;
> -        let shadow_self = unsafe {
> -            &mut*(opaque as *mut Stream)
> -        };
> -        if let Some(callback) = &mut shadow_self.callback {
> -            callback(&Stream::from_ptr(c), flags);
> -        }
> +extern "C" fn event_callback(
> +    c: sys::virStreamPtr,
> +    flags: libc::c_int,
> +    opaque: *const libc::c_void,
> +) {
> +    let flags = flags as StreamFlags;
> +    let shadow_self = unsafe { &mut *(opaque as *mut Stream) };
> +    if let Some(callback) = &mut shadow_self.callback {
> +        callback(&Stream::from_ptr(c), flags);
> +    }
>  }
>  
>  extern "C" fn event_free(_opaque: *mut libc::c_void) {}
> @@ -93,16 +95,18 @@ impl Drop for Stream {
>      fn drop(&mut self) {
>          if self.ptr.is_some() {
>              if let Err(e) = self.free() {
> -                panic!("Unable to drop memory for Stream, code {}, message: {}",
> -                       e.code,
> -                       e.message)
> +                panic!(
> +                    "Unable to drop memory for Stream, code {}, message: {}",
> +                    e.code, e.message
> +                )
>              }
>          }
>          if self.callback.is_some() {
>              if let Err(e) = self.event_remove_callback() {
> -                panic!("Unable to remove event callback for Stream, code {}, message: {}",
> -                       e.code,
> -                       e.message)
> +                panic!(
> +                    "Unable to remove event callback for Stream, code {}, message: {}",
> +                    e.code, e.message
> +                )
>              }
>          }
>      }
> @@ -120,7 +124,10 @@ impl Stream {
>      }
>  
>      pub fn from_ptr(ptr: sys::virStreamPtr) -> Stream {
> -        Stream { ptr: Some(ptr), callback: None }
> +        Stream {
> +            ptr: Some(ptr),
> +            callback: None,
> +        }
>      }
>  
>      pub fn as_ptr(&self) -> sys::virStreamPtr {
> @@ -160,7 +167,7 @@ impl Stream {
>              virStreamSend(
>                  self.as_ptr(),
>                  data.as_ptr() as *mut libc::c_char,
> -                data.len()
> +                data.len(),
>              )
>          };
>          usize::try_from(ret).map_err(|_| Error::new())
> @@ -177,10 +184,20 @@ impl Stream {
>          usize::try_from(ret).map_err(|_| Error::new())
>      }
>  
> -    pub fn event_add_callback<F: 'static + FnMut(&Stream, StreamEventType)>(&mut self, events: StreamEventType, cb: F) -> Result<(), Error> {
> +    pub fn event_add_callback<F: 'static + FnMut(&Stream, StreamEventType)>(
> +        &mut self,
> +        events: StreamEventType,
> +        cb: F,
> +    ) -> Result<(), Error> {
>          let ret = unsafe {
>              let ptr = &*self as *const _ as *const _;
> -            virStreamEventAddCallback(self.as_ptr(), events as libc::c_int, event_callback, ptr, event_free)
> +            virStreamEventAddCallback(
> +                self.as_ptr(),
> +                events as libc::c_int,
> +                event_callback,
> +                ptr,
> +                event_free,
> +            )
>          };
>          if ret == -1 {
>              return Err(Error::new());
> @@ -190,9 +207,7 @@ impl Stream {
>      }
>  
>      pub fn event_update_callback(&self, events: StreamEventType) -> Result<(), Error> {
> -        let ret = unsafe {
> -            virStreamEventUpdateCallback(self.as_ptr(), events as libc::c_int)
> -        };
> +        let ret = unsafe { virStreamEventUpdateCallback(self.as_ptr(), events as libc::c_int) };
>          if ret == -1 {
>              return Err(Error::new());
>          }
> -- 
> 2.24.0