Upgrade to Rust 2018 to fix Macro use and import issues (#52)

* Upgrade to Rust 2018 to fix Macro use and import issues

Fixes #51

* Cargo fmt

Cargo.toml

@@ -9,6 +9,7 @@ repository = "https://github.com/lawliet89/rocket_cors"
 documentation = "https://docs.rs/rocket_cors/"
 keywords = ["rocket", "cors"]
 categories = ["web-programming"]
+edition = "2018"
 
 [badges]
 travis-ci = { repository = "lawliet89/rocket_cors" }

examples/fairing.rs

@@ -1,6 +1,6 @@
 #![feature(proc_macro_hygiene, decl_macro)]
-extern crate rocket;
-extern crate rocket_cors;
+use rocket;
+use rocket_cors;
 
 use rocket::http::Method;
 use rocket::{get, routes};

examples/guard.rs

@@ -1,6 +1,6 @@
 #![feature(proc_macro_hygiene, decl_macro)]
-extern crate rocket;
-extern crate rocket_cors;
+use rocket;
+use rocket_cors;
 
 use std::io::Cursor;
 
@@ -11,27 +11,27 @@ use rocket_cors::{AllowedHeaders, AllowedOrigins, Guard, Responder};
 
 /// Using a `Responder` -- the usual way you would use this
 #[get("/")]
-fn responder(cors: Guard) -> Responder<&str> {
+fn responder(cors: Guard<'_>) -> Responder<'_, &str> {
     cors.responder("Hello CORS!")
 }
 
 /// Using a `Response` instead of a `Responder`. You generally won't have to do this.
 #[get("/response")]
-fn response(cors: Guard) -> Response {
+fn response(cors: Guard<'_>) -> Response<'_> {
     let mut response = Response::new();
     response.set_sized_body(Cursor::new("Hello CORS!"));
     cors.response(response)
 }
 
 /// Manually mount an OPTIONS route for your own handling
 #[options("/manual")]
-fn manual_options(cors: Guard) -> Responder<&str> {
+fn manual_options(cors: Guard<'_>) -> Responder<'_, &str> {
     cors.responder("Manual OPTIONS preflight handling")
 }
 
 /// Manually mount an OPTIONS route for your own handling
 #[get("/manual")]
-fn manual(cors: Guard) -> Responder<&str> {
+fn manual(cors: Guard<'_>) -> Responder<'_, &str> {
     cors.responder("Manual OPTIONS preflight handling")
 }
 

examples/json.rs

@@ -2,9 +2,9 @@
 //!
 //! Note: This requires the `serialization` feature which is enabled by default.
 #![feature(proc_macro_hygiene, decl_macro)]
-extern crate rocket;
-extern crate rocket_cors as cors;
-extern crate serde_json;
+
+use rocket_cors as cors;
+use serde_json;
 
 use crate::cors::{AllowedHeaders, AllowedOrigins, Cors};
 use rocket::http::Method;

examples/manual.rs

@@ -1,6 +1,6 @@
 #![feature(proc_macro_hygiene, decl_macro)]
-extern crate rocket;
-extern crate rocket_cors;
+use rocket;
+use rocket_cors;
 
 use std::io::Cursor;
 
@@ -13,7 +13,7 @@ use rocket_cors::{AllowedHeaders, AllowedOrigins, Cors};
 /// Note that the `'r` lifetime annotation is not requred here because `State` borrows with lifetime
 /// `'r` and so does `Responder`!
 #[get("/")]
-fn borrowed(options: State<Cors>) -> impl Responder {
+fn borrowed(options: State<'_, Cors>) -> impl Responder<'_> {
     options
         .inner()
         .respond_borrowed(|guard| guard.responder("Hello CORS"))
@@ -23,7 +23,7 @@ fn borrowed(options: State<Cors>) -> impl Responder {
 /// Note that the `'r` lifetime annotation is not requred here because `State` borrows with lifetime
 /// `'r` and so does `Responder`!
 #[get("/response")]
-fn response(options: State<Cors>) -> impl Responder {
+fn response(options: State<'_, Cors>) -> impl Responder<'_> {
     let mut response = Response::new();
     response.set_sized_body(Cursor::new("Hello CORS!"));
 

examples/mix.rs

@@ -4,8 +4,8 @@
 //! `ping` route that you want to allow all Origins to access.
 
 #![feature(proc_macro_hygiene, decl_macro)]
-extern crate rocket;
-extern crate rocket_cors;
+use rocket;
+use rocket_cors;
 
 use rocket::http::Method;
 use rocket::response::Responder;
@@ -14,7 +14,7 @@ use rocket_cors::{AllowedHeaders, AllowedOrigins, Cors, Guard};
 
 /// The "usual" app route
 #[get("/")]
-fn app(cors: Guard) -> rocket_cors::Responder<&str> {
+fn app(cors: Guard<'_>) -> rocket_cors::Responder<'_, &str> {
     cors.responder("Hello CORS!")
 }
 

src/fairing.rs

@@ -1,6 +1,6 @@
 //! Fairing implementation
 
-use log::{error, info, log};
+use ::log::{error, info, log};
 use rocket::http::{self, uri::Origin, Status};
 use rocket::{self, error_, info_, log_, Outcome, Request};
 
@@ -16,7 +16,7 @@ enum CorsValidation {
 
 /// Route for Fairing error handling
 pub(crate) fn fairing_error_route<'r>(
-    request: &'r Request,
+    request: &'r Request<'_>,
     _: rocket::Data,
 ) -> rocket::handler::Outcome<'r> {
     let status = request
@@ -36,7 +36,7 @@ fn fairing_route(rank: isize) -> rocket::Route {
 }
 
 /// Modifies a `Request` to route to Fairing error handler
-fn route_to_fairing_error_handler(options: &Cors, status: u16, request: &mut Request) {
+fn route_to_fairing_error_handler(options: &Cors, status: u16, request: &mut Request<'_>) {
     let origin = Origin::parse_owned(format!("{}/{}", options.fairing_route_base, status)).unwrap();
 
     request.set_method(http::Method::Get);
@@ -45,8 +45,8 @@ fn route_to_fairing_error_handler(options: &Cors, status: u16, request: &mut Req
 
 fn on_response_wrapper(
     options: &Cors,
-    request: &Request,
-    response: &mut rocket::Response,
+    request: &Request<'_>,
+    response: &mut rocket::Response<'_>,
 ) -> Result<(), Error> {
     let origin = match origin(request)? {
         None => {
@@ -112,7 +112,7 @@ impl rocket::fairing::Fairing for Cors {
         }
     }
 
-    fn on_request(&self, request: &mut Request, _: &rocket::Data) {
+    fn on_request(&self, request: &mut Request<'_>, _: &rocket::Data) {
         let result = match validate(self, request) {
             Ok(_) => CorsValidation::Success,
             Err(err) => {
@@ -126,7 +126,7 @@ impl rocket::fairing::Fairing for Cors {
         let _ = request.local_cache(|| result);
     }
 
-    fn on_response(&self, request: &Request, response: &mut rocket::Response) {
+    fn on_response(&self, request: &Request<'_>, response: &mut rocket::Response<'_>) {
         if let Err(err) = on_response_wrapper(self, request, response) {
             error_!("Fairings on_response error: {}\nMost likely a bug", err);
             response.set_status(Status::InternalServerError);

src/headers.rs

@@ -34,7 +34,7 @@ impl Deref for HeaderFieldName {
 }
 
 impl fmt::Display for HeaderFieldName {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         self.0.fmt(f)
     }
 }
@@ -68,7 +68,7 @@ pub type HeaderFieldNamesSet = HashSet<HeaderFieldName>;
 pub struct Url(#[cfg_attr(feature = "serialization", serde(with = "url_serde"))] url::Url);
 
 impl fmt::Display for Url {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         self.0.fmt(f)
     }
 }

src/lib.rs

@@ -550,29 +550,6 @@
 )]
 #![doc(test(attr(allow(unused_variables), deny(warnings))))]
 
-extern crate log;
-extern crate rocket;
-extern crate unicase;
-extern crate url;
-
-#[cfg(feature = "serialization")]
-extern crate serde;
-#[cfg(feature = "serialization")]
-extern crate serde_derive;
-#[cfg(feature = "serialization")]
-extern crate unicase_serde;
-#[cfg(feature = "serialization")]
-extern crate url_serde;
-
-#[cfg(test)]
-extern crate hyper;
-#[cfg(feature = "serialization")]
-#[cfg(test)]
-extern crate serde_json;
-#[cfg(feature = "serialization")]
-#[cfg(test)]
-extern crate serde_test;
-
 #[cfg(test)]
 #[macro_use]
 mod test_macros;
@@ -588,7 +565,7 @@ use std::marker::PhantomData;
 use std::ops::Deref;
 use std::str::FromStr;
 
-use log::{error, info, log};
+use ::log::{error, info, log};
 use rocket::http::{self, Status};
 use rocket::request::{FromRequest, Request};
 use rocket::response;
@@ -687,7 +664,7 @@ impl error::Error for Error {
         }
     }
 
-    fn cause(&self) -> Option<&error::Error> {
+    fn cause(&self) -> Option<&dyn error::Error> {
         match *self {
             Error::BadOrigin(ref e) => Some(e),
             _ => Some(self),
@@ -696,7 +673,7 @@ impl error::Error for Error {
 }
 
 impl fmt::Display for Error {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match *self {
             Error::BadOrigin(ref e) => fmt::Display::fmt(e, f),
             _ => write!(f, "{}", error::Error::description(self)),
@@ -705,7 +682,7 @@ impl fmt::Display for Error {
 }
 
 impl<'r> response::Responder<'r> for Error {
-    fn respond_to(self, _: &Request) -> Result<response::Response<'r>, Status> {
+    fn respond_to(self, _: &Request<'_>) -> Result<response::Response<'r>, Status> {
         error_!("CORS Error: {}", self);
         Err(self.status())
     }
@@ -786,7 +763,7 @@ impl From<http::Method> for Method {
 }
 
 impl fmt::Display for Method {
-    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         fmt::Display::fmt(&self.0, f)
     }
 }
@@ -820,7 +797,7 @@ mod method_serde {
             impl<'de> Visitor<'de> for MethodVisitor {
                 type Value = Method;
 
-                fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
+                fn expecting(&self, formatter: &mut fmt::Formatter<'_>) -> fmt::Result {
                     formatter.write_str("a string containing a HTTP Verb")
                 }
 
@@ -1303,7 +1280,7 @@ impl Response {
     /// Merge CORS headers with an existing `rocket::Response`.
     ///
     /// This will overwrite any existing CORS headers
-    fn merge(&self, response: &mut response::Response) {
+    fn merge(&self, response: &mut response::Response<'_>) {
         // TODO: We should be able to remove this
         let origin = match self.allow_origin {
             None => {
@@ -1426,7 +1403,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for Guard<'r> {
     type Error = Error;
 
     fn from_request(request: &'a Request<'r>) -> rocket::request::Outcome<Self, Self::Error> {
-        let options = match request.guard::<State<Cors>>() {
+        let options = match request.guard::<State<'_, Cors>>() {
             Outcome::Success(options) => options,
             _ => {
                 let error = Error::MissingCorsInRocketState;
@@ -1461,7 +1438,7 @@ impl<'a, 'r> FromRequest<'a, 'r> for Guard<'r> {
 pub struct Responder<'r, R> {
     responder: R,
     cors_response: Response,
-    marker: PhantomData<response::Responder<'r>>,
+    marker: PhantomData<dyn response::Responder<'r>>,
 }
 
 impl<'r, R: response::Responder<'r>> Responder<'r, R> {
@@ -1474,15 +1451,15 @@ impl<'r, R: response::Responder<'r>> Responder<'r, R> {
     }
 
     /// Respond to a request
-    fn respond(self, request: &Request) -> response::Result<'r> {
+    fn respond(self, request: &Request<'_>) -> response::Result<'r> {
         let mut response = self.responder.respond_to(request)?; // handle status errors?
         self.cors_response.merge(&mut response);
         Ok(response)
     }
 }
 
 impl<'r, R: response::Responder<'r>> response::Responder<'r> for Responder<'r, R> {
-    fn respond_to(self, request: &Request) -> response::Result<'r> {
+    fn respond_to(self, request: &Request<'_>) -> response::Result<'r> {
         self.respond(request)
     }
 }
@@ -1514,7 +1491,7 @@ where
         }
     }
 
-    fn build_guard(&self, request: &Request) -> Result<Guard<'r>, Error> {
+    fn build_guard(&self, request: &Request<'_>) -> Result<Guard<'r>, Error> {
         let response = Response::validate_and_build(&self.options, request)?;
         Ok(Guard::new(response))
     }
@@ -1525,7 +1502,7 @@ where
     F: FnOnce(Guard<'r>) -> R + 'r,
     R: response::Responder<'r>,
 {
-    fn respond_to(self, request: &Request) -> response::Result<'r> {
+    fn respond_to(self, request: &Request<'_>) -> response::Result<'r> {
         let guard = match self.build_guard(request) {
             Ok(guard) => guard,
             Err(err) => {
@@ -1554,7 +1531,7 @@ enum ValidationResult {
 }
 
 /// Validates a request for CORS and returns a CORS Response
-fn validate_and_build(options: &Cors, request: &Request) -> Result<Response, Error> {
+fn validate_and_build(options: &Cors, request: &Request<'_>) -> Result<Response, Error> {
     let result = validate(options, request)?;
 
     Ok(match result {
@@ -1567,7 +1544,7 @@ fn validate_and_build(options: &Cors, request: &Request) -> Result<Response, Err
 }
 
 /// Validate a CORS request
-fn validate(options: &Cors, request: &Request) -> Result<ValidationResult, Error> {
+fn validate(options: &Cors, request: &Request<'_>) -> Result<ValidationResult, Error> {
     // 1. If the Origin header is not present terminate this set of steps.
     // The request is outside the scope of this specification.
     let origin = origin(request)?;
@@ -1644,7 +1621,7 @@ fn validate_allowed_headers(
 }
 
 /// Gets the `Origin` request header from the request
-fn origin(request: &Request) -> Result<Option<Origin>, Error> {
+fn origin(request: &Request<'_>) -> Result<Option<Origin>, Error> {
     match Origin::from_request(request) {
         Outcome::Forward(()) => Ok(None),
         Outcome::Success(origin) => Ok(Some(origin)),
@@ -1653,7 +1630,7 @@ fn origin(request: &Request) -> Result<Option<Origin>, Error> {
 }
 
 /// Gets the `Access-Control-Request-Method` request header from the request
-fn request_method(request: &Request) -> Result<Option<AccessControlRequestMethod>, Error> {
+fn request_method(request: &Request<'_>) -> Result<Option<AccessControlRequestMethod>, Error> {
     match AccessControlRequestMethod::from_request(request) {
         Outcome::Forward(()) => Ok(None),
         Outcome::Success(method) => Ok(Some(method)),
@@ -1662,7 +1639,7 @@ fn request_method(request: &Request) -> Result<Option<AccessControlRequestMethod
 }
 
 /// Gets the `Access-Control-Request-Headers` request header from the request
-fn request_headers(request: &Request) -> Result<Option<AccessControlRequestHeaders>, Error> {
+fn request_headers(request: &Request<'_>) -> Result<Option<AccessControlRequestHeaders>, Error> {
     match AccessControlRequestHeaders::from_request(request) {
         Outcome::Forward(()) => Ok(None),
         Outcome::Success(geaders) => Ok(Some(geaders)),
@@ -1887,10 +1864,10 @@ pub fn catch_all_options_routes() -> Vec<rocket::Route> {
 
 /// Handler for the "catch all options route"
 fn catch_all_options_route_handler<'r>(
-    request: &'r Request,
+    request: &'r Request<'_>,
     _: rocket::Data,
 ) -> rocket::handler::Outcome<'r> {
-    let guard: Guard = match request.guard() {
+    let guard: Guard<'_> = match request.guard() {
         Outcome::Success(guard) => guard,
         Outcome::Failure((status, _)) => return rocket::handler::Outcome::failure(status),
         Outcome::Forward(()) => unreachable!("Should not be reachable"),