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impl Error and FromError for HttpError; replace instances of try_io! with try!

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This commit is contained in:
Tim Kuehn
2014-11-10 22:59:18 -08:00
parent b9bfdd0537
commit 5605ade5dc
5 changed files with 58 additions and 35 deletions
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16
src/client/request.rs
View File

@@ -56,7 +56,7 @@ impl Request<Fresh> {
}; };
debug!("port={}", port); debug!("port={}", port);
let stream: S = try_io!(NetworkConnector::connect((host[], port), url.scheme.as_slice())); let stream: S = try!(NetworkConnector::connect((host[], port), url.scheme.as_slice()));
let stream = ThroughWriter(BufferedWriter::new(box stream as Box<NetworkStream + Send>)); let stream = ThroughWriter(BufferedWriter::new(box stream as Box<NetworkStream + Send>));
let mut headers = Headers::new(); let mut headers = Headers::new();
@@ -113,15 +113,15 @@ impl Request<Fresh> {
} }
debug!("writing head: {} {} {}", self.method, uri, self.version); debug!("writing head: {} {} {}", self.method, uri, self.version);
try_io!(write!(self.body, "{} {} {}", self.method, uri, self.version)) try!(write!(self.body, "{} {} {}", self.method, uri, self.version))
try_io!(self.body.write(LINE_ENDING)); try!(self.body.write(LINE_ENDING));
let stream = match self.method { let stream = match self.method {
Get | Head => { Get | Head => {
debug!("headers [\n{}]", self.headers); debug!("headers [\n{}]", self.headers);
try_io!(write!(self.body, "{}", self.headers)); try!(write!(self.body, "{}", self.headers));
try_io!(self.body.write(LINE_ENDING)); try!(self.body.write(LINE_ENDING));
EmptyWriter(self.body.unwrap()) EmptyWriter(self.body.unwrap())
}, },
_ => { _ => {
@@ -154,8 +154,8 @@ impl Request<Fresh> {
} }
debug!("headers [\n{}]", self.headers); debug!("headers [\n{}]", self.headers);
try_io!(write!(self.body, "{}", self.headers)); try!(write!(self.body, "{}", self.headers));
try_io!(self.body.write(LINE_ENDING)); try!(self.body.write(LINE_ENDING));
if chunked { if chunked {
ChunkedWriter(self.body.unwrap()) ChunkedWriter(self.body.unwrap())
@@ -184,7 +184,7 @@ impl Request<Streaming> {
/// ///
/// Consumes the Request. /// Consumes the Request.
pub fn send(self) -> HttpResult<Response> { pub fn send(self) -> HttpResult<Response> {
let raw = try_io!(self.body.end()).unwrap(); let raw = try!(self.body.end()).unwrap();
Response::new(raw) Response::new(raw)
} }
} }

36
src/http.rs
View File

@@ -301,7 +301,7 @@ fn read_until_space<R: Reader>(stream: &mut R, buf: &mut [u8]) -> HttpResult<boo
let mut bufwrt = BufWriter::new(buf); let mut bufwrt = BufWriter::new(buf);
loop { loop {
let byte = try_io!(stream.read_byte()); let byte = try!(stream.read_byte());
if byte == SP { if byte == SP {
break break
@@ -359,9 +359,9 @@ fn is_valid_method(buf: &[u8]) -> bool {
/// Read a `RequestUri` from a raw stream. /// Read a `RequestUri` from a raw stream.
pub fn read_uri<R: Reader>(stream: &mut R) -> HttpResult<uri::RequestUri> { pub fn read_uri<R: Reader>(stream: &mut R) -> HttpResult<uri::RequestUri> {
let mut b = try_io!(stream.read_byte()); let mut b = try!(stream.read_byte());
while b == SP { while b == SP {
b = try_io!(stream.read_byte()); b = try!(stream.read_byte());
} }
let mut s = String::new(); let mut s = String::new();
@@ -371,7 +371,7 @@ pub fn read_uri<R: Reader>(stream: &mut R) -> HttpResult<uri::RequestUri> {
} else { } else {
s.push(b as char); s.push(b as char);
loop { loop {
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
SP => { SP => {
break; break;
}, },
@@ -422,7 +422,7 @@ pub fn read_http_version<R: Reader>(stream: &mut R) -> HttpResult<HttpVersion> {
try!(expect(stream.read_byte(), b'P')); try!(expect(stream.read_byte(), b'P'));
try!(expect(stream.read_byte(), b'/')); try!(expect(stream.read_byte(), b'/'));
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
b'0' => { b'0' => {
try!(expect(stream.read_byte(), b'.')); try!(expect(stream.read_byte(), b'.'));
try!(expect(stream.read_byte(), b'9')); try!(expect(stream.read_byte(), b'9'));
@@ -430,7 +430,7 @@ pub fn read_http_version<R: Reader>(stream: &mut R) -> HttpResult<HttpVersion> {
}, },
b'1' => { b'1' => {
try!(expect(stream.read_byte(), b'.')); try!(expect(stream.read_byte(), b'.'));
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
b'0' => Ok(Http10), b'0' => Ok(Http10),
b'1' => Ok(Http11), b'1' => Ok(Http11),
_ => Err(HttpVersionError) _ => Err(HttpVersionError)
@@ -476,9 +476,9 @@ pub fn read_header<R: Reader>(stream: &mut R) -> HttpResult<Option<RawHeaderLine
let mut value = vec![]; let mut value = vec![];
loop { loop {
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
CR if name.len() == 0 => { CR if name.len() == 0 => {
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
LF => return Ok(None), LF => return Ok(None),
_ => return Err(HttpHeaderError) _ => return Err(HttpHeaderError)
} }
@@ -495,7 +495,7 @@ pub fn read_header<R: Reader>(stream: &mut R) -> HttpResult<Option<RawHeaderLine
todo!("handle obs-folding (gross!)"); todo!("handle obs-folding (gross!)");
loop { loop {
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
CR => break, CR => break,
LF => return Err(HttpHeaderError), LF => return Err(HttpHeaderError),
b' ' if ows => {}, b' ' if ows => {},
@@ -508,7 +508,7 @@ pub fn read_header<R: Reader>(stream: &mut R) -> HttpResult<Option<RawHeaderLine
debug!("header value = {}", value); debug!("header value = {}", value);
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
LF => Ok(Some((name, value))), LF => Ok(Some((name, value))),
_ => Err(HttpHeaderError) _ => Err(HttpHeaderError)
} }
@@ -528,10 +528,10 @@ pub fn read_request_line<R: Reader>(stream: &mut R) -> HttpResult<RequestLine> {
let version = try!(read_http_version(stream)); let version = try!(read_http_version(stream));
debug!("version = {}", version); debug!("version = {}", version);
if try_io!(stream.read_byte()) != CR { if try!(stream.read_byte()) != CR {
return Err(HttpVersionError); return Err(HttpVersionError);
} }
if try_io!(stream.read_byte()) != LF { if try!(stream.read_byte()) != LF {
return Err(HttpVersionError); return Err(HttpVersionError);
} }
@@ -557,7 +557,7 @@ pub type StatusLine = (HttpVersion, status::StatusCode);
/// >``` /// >```
pub fn read_status_line<R: Reader>(stream: &mut R) -> HttpResult<StatusLine> { pub fn read_status_line<R: Reader>(stream: &mut R) -> HttpResult<StatusLine> {
let version = try!(read_http_version(stream)); let version = try!(read_http_version(stream));
if try_io!(stream.read_byte()) != SP { if try!(stream.read_byte()) != SP {
return Err(HttpVersionError); return Err(HttpVersionError);
} }
let code = try!(read_status(stream)); let code = try!(read_status(stream));
@@ -568,9 +568,9 @@ pub fn read_status_line<R: Reader>(stream: &mut R) -> HttpResult<StatusLine> {
/// Read the StatusCode from a stream. /// Read the StatusCode from a stream.
pub fn read_status<R: Reader>(stream: &mut R) -> HttpResult<status::StatusCode> { pub fn read_status<R: Reader>(stream: &mut R) -> HttpResult<status::StatusCode> {
let code = [ let code = [
try_io!(stream.read_byte()), try!(stream.read_byte()),
try_io!(stream.read_byte()), try!(stream.read_byte()),
try_io!(stream.read_byte()), try!(stream.read_byte()),
]; ];
let code = match str::from_utf8(code.as_slice()).and_then(from_str::<u16>) { let code = match str::from_utf8(code.as_slice()).and_then(from_str::<u16>) {
@@ -583,8 +583,8 @@ pub fn read_status<R: Reader>(stream: &mut R) -> HttpResult<status::StatusCode>
// reason is purely for humans, so just consume it till we get to CRLF // reason is purely for humans, so just consume it till we get to CRLF
loop { loop {
match try_io!(stream.read_byte()) { match try!(stream.read_byte()) {
CR => match try_io!(stream.read_byte()) { CR => match try!(stream.read_byte()) {
LF => break, LF => break,
_ => return Err(HttpStatusError) _ => return Err(HttpStatusError)
}, },

31
src/lib.rs
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@@ -145,15 +145,12 @@ pub use status::{Ok, BadRequest, NotFound};
pub use server::Server; pub use server::Server;
use std::fmt; use std::fmt;
use std::error::{Error, FromError};
use std::io::IoError; use std::io::IoError;
use std::rt::backtrace; use std::rt::backtrace;
macro_rules! try_io(
($e:expr) => (match $e { Ok(v) => v, Err(e) => return Err(::HttpIoError(e)) })
)
macro_rules! todo( macro_rules! todo(
($($arg:tt)*) => (if cfg!(not(ndebug)) { ($($arg:tt)*) => (if cfg!(not(ndebug)) {
format_args!(|args| log!(5, "TODO: {}", args), $($arg)*) format_args!(|args| log!(5, "TODO: {}", args), $($arg)*)
@@ -222,6 +219,32 @@ pub enum HttpError {
HttpIoError(IoError), HttpIoError(IoError),
} }
impl Error for HttpError {
fn description(&self) -> &str {
match *self {
HttpMethodError => "Invalid Method specified",
HttpUriError => "Invalid Request URI specified",
HttpVersionError => "Invalid HTTP version specified",
HttpHeaderError => "Invalid Header provided",
HttpStatusError => "Invalid Status provided",
HttpIoError(_) => "An IoError occurred while connecting to the specified network",
}
}
fn cause(&self) -> Option<&Error> {
match *self {
HttpIoError(ref error) => Some(error as &Error),
_ => None,
}
}
}
impl FromError<IoError> for HttpError {
fn from_error(err: IoError) -> HttpError {
HttpIoError(err)
}
}
//FIXME: when Opt-in Built-in Types becomes a thing, we can force these structs //FIXME: when Opt-in Built-in Types becomes a thing, we can force these structs
//to be Send. For now, this has the compiler do a static check. //to be Send. For now, this has the compiler do a static check.
fn _assert_send<T: Send>() { fn _assert_send<T: Send>() {

8
src/server/mod.rs
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@@ -55,11 +55,11 @@ impl<L: NetworkListener<S, A>, S: NetworkStream, A: NetworkAcceptor<S>> Server<L
A: NetworkAcceptor<S>, A: NetworkAcceptor<S>,
L: NetworkListener<S, A>, { L: NetworkListener<S, A>, {
debug!("binding to {}:{}", self.ip, self.port); debug!("binding to {}:{}", self.ip, self.port);
let mut listener: L = try_io!(NetworkListener::<S, A>::bind((self.ip, self.port))); let mut listener: L = try!(NetworkListener::<S, A>::bind((self.ip, self.port)));
let socket = try_io!(listener.socket_name()); let socket = try!(listener.socket_name());
let acceptor = try_io!(listener.listen()); let acceptor = try!(listener.listen());
let captured = acceptor.clone(); let captured = acceptor.clone();
TaskBuilder::new().named("hyper acceptor").spawn(proc() { TaskBuilder::new().named("hyper acceptor").spawn(proc() {
@@ -131,7 +131,7 @@ impl<A: NetworkAcceptor<S>, S: NetworkStream> Listening<A> {
/// and does not close the rest of the acceptors. /// and does not close the rest of the acceptors.
pub fn close(&mut self) -> HttpResult<()> { pub fn close(&mut self) -> HttpResult<()> {
debug!("closing server"); debug!("closing server");
try_io!(self.acceptor.close()); try!(self.acceptor.close());
Ok(()) Ok(())
} }
} }

2
src/server/request.rs
View File

@@ -36,7 +36,7 @@ impl Request {
/// Create a new Request, reading the StartLine and Headers so they are /// Create a new Request, reading the StartLine and Headers so they are
/// immediately useful. /// immediately useful.
pub fn new<S: NetworkStream>(mut stream: S) -> HttpResult<Request> { pub fn new<S: NetworkStream>(mut stream: S) -> HttpResult<Request> {
let remote_addr = try_io!(stream.peer_name()); let remote_addr = try!(stream.peer_name());
debug!("remote addr = {}", remote_addr); debug!("remote addr = {}", remote_addr);
let mut stream = BufferedReader::new(box stream as Box<NetworkStream + Send>); let mut stream = BufferedReader::new(box stream as Box<NetworkStream + Send>);
let (method, uri, version) = try!(read_request_line(&mut stream)); let (method, uri, version) = try!(read_request_line(&mut stream));