gstreamer-rs/gstreamer/src/error.rs

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// Copyright (C) 2016-2017 Sebastian Dröge <sebastian@centricular.com>
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use std::error::Error;
use std::fmt;
use glib;
#[macro_export]
macro_rules! gst_error_msg(
// Plain strings
($err:expr, ($msg:expr), [$dbg:expr]) => {
$crate::ErrorMessage::new(&$err, Some($msg),
Some($dbg),
file!(), module_path!(), line!())
};
($err:expr, ($msg:expr)) => {
$crate::ErrorMessage::new(&$err, Some($msg),
None,
file!(), module_path!(), line!())
};
($err:expr, [$dbg:expr]) => {
$crate::ErrorMessage::new(&$err, None,
Some($dbg),
file!(), module_path!(), line!())
};
// Format strings
($err:expr, ($($msg:tt)*), [$($dbg:tt)*]) => { {
$crate::ErrorMessage::new(&$err, Some(format!($($msg)*).as_ref()),
Some(format!($($dbg)*).as_ref()),
file!(), module_path!(), line!())
}};
($err:expr, ($($msg:tt)*)) => { {
$crate::ErrorMessage::new(&$err, Some(format!($($msg)*).as_ref()),
None,
file!(), module_path!(), line!())
}};
($err:expr, [$($dbg:tt)*]) => { {
$crate::ErrorMessage::new(&$err, None,
Some(format!($($dbg)*).as_ref()),
file!(), module_path!(), line!())
}};
);
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#[derive(Clone, Debug, PartialEq, Eq)]
pub struct ErrorMessage {
pub(crate) error_domain: glib::Quark,
pub(crate) error_code: i32,
pub(crate) message: Option<String>,
pub(crate) debug: Option<String>,
pub(crate) filename: &'static str,
pub(crate) function: &'static str,
pub(crate) line: u32,
}
impl ErrorMessage {
pub fn new<
'a,
'b,
T: ::MessageErrorDomain,
U: Into<Option<&'a str>>,
V: Into<Option<&'b str>>,
>(
error: &T,
message: U,
debug: V,
filename: &'static str,
function: &'static str,
line: u32,
) -> ErrorMessage {
let error_domain = T::domain();
let error_code = error.code();
let message = message.into();
let debug = debug.into();
ErrorMessage {
error_domain,
error_code,
message: message.map(String::from),
debug: debug.map(String::from),
filename,
function,
line,
}
}
}
impl fmt::Display for ErrorMessage {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
write!(
f,
"Error {:?} ({:?}) at {}:{}",
self.message, self.debug, self.filename, self.line
)
}
}
impl Error for ErrorMessage {
fn description(&self) -> &str {
"ErrorMessage"
}
}