Introduce unstable, incomplete WASM support

2019-09-24 14:50:30 -07:00
parent 6413a4349e
commit 932defd879
10 changed files with 543 additions and 78 deletions
--- a/src/wasm/request.rs
+++ b/src/wasm/request.rs
@@ -0,0 +1,144 @@
+use std::fmt;
+
+use http::{Method, HeaderMap};
+use url::Url;
+
+use super::{Body, Client, Response};
+
+/// A request which can be executed with `Client::execute()`.
+pub struct Request {
+    method: Method,
+    url: Url,
+    headers: HeaderMap,
+    body: Option<Body>,
+}
+
+/// A builder to construct the properties of a `Request`.
+pub struct RequestBuilder {
+    client: Client,
+    request: crate::Result<Request>,
+}
+
+impl Request {
+    pub(super) fn new(method: Method, url: Url) -> Self {
+        Request {
+            method,
+            url,
+            headers: HeaderMap::new(),
+            body: None,
+        }
+    }
+
+    /// Get the method.
+    #[inline]
+    pub fn method(&self) -> &Method {
+        &self.method
+    }
+
+    /// Get a mutable reference to the method.
+    #[inline]
+    pub fn method_mut(&mut self) -> &mut Method {
+        &mut self.method
+    }
+
+    /// Get the url.
+    #[inline]
+    pub fn url(&self) -> &Url {
+        &self.url
+    }
+
+    /// Get a mutable reference to the url.
+    #[inline]
+    pub fn url_mut(&mut self) -> &mut Url {
+        &mut self.url
+    }
+
+    /// Get the headers.
+    #[inline]
+    pub fn headers(&self) -> &HeaderMap {
+        &self.headers
+    }
+
+    /// Get a mutable reference to the headers.
+    #[inline]
+    pub fn headers_mut(&mut self) -> &mut HeaderMap {
+        &mut self.headers
+    }
+
+    /// Get the body.
+    #[inline]
+    pub fn body(&self) -> Option<&Body> {
+        self.body.as_ref()
+    }
+
+    /// Get a mutable reference to the body.
+    #[inline]
+    pub fn body_mut(&mut self) -> &mut Option<Body> {
+        &mut self.body
+    }
+}
+
+impl RequestBuilder {
+    pub(super) fn new(client: Client, request: crate::Result<Request>) -> RequestBuilder {
+        RequestBuilder { client, request }
+    }
+
+
+    /// Set the request body.
+    pub fn body<T: Into<Body>>(mut self, body: T) -> RequestBuilder {
+        if let Ok(ref mut req) = self.request {
+            req.body = Some(body.into());
+        }
+        self
+    }
+
+    /// Constructs the Request and sends it to the target URL, returning a
+    /// future Response.
+    ///
+    /// # Errors
+    ///
+    /// This method fails if there was an error while sending request.
+    ///
+    /// # Example
+    ///
+    /// ```no_run
+    /// # use reqwest::Error;
+    /// #
+    /// # async fn run() -> Result<(), Error> {
+    /// let response = reqwest::Client::new()
+    ///     .get("https://hyper.rs")
+    ///     .send()
+    ///     .await?;
+    /// # Ok(())
+    /// # }
+    /// ```
+    pub async fn send(self) -> crate::Result<Response> {
+        let req = self.request?;
+        self.client.execute_request(req).await
+    }
+}
+
+impl fmt::Debug for Request {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fmt_request_fields(&mut f.debug_struct("Request"), self).finish()
+    }
+}
+
+impl fmt::Debug for RequestBuilder {
+    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        let mut builder = f.debug_struct("RequestBuilder");
+        match self.request {
+            Ok(ref req) => fmt_request_fields(&mut builder, req).finish(),
+            Err(ref err) => builder.field("error", err).finish(),
+        }
+    }
+}
+
+fn fmt_request_fields<'a, 'b>(
+    f: &'a mut fmt::DebugStruct<'a, 'b>,
+    req: &Request,
+) -> &'a mut fmt::DebugStruct<'a, 'b> {
+    f.field("method", &req.method)
+        .field("url", &req.url)
+        .field("headers", &req.headers)
+}