make internal_err an extension trait

src/lib.rs

@@ -7,7 +7,7 @@ mod router;
 mod sn;
 
 use cfg_if::cfg_if;
-use utils::{Error, MyResult};
+use utils::*;
 use wasm_bindgen::prelude::*;
 use web_sys::*;
 
@@ -43,12 +43,10 @@ async fn default_route(_req: Request, _url: Url) -> MyResult<Response> {
 }
 
 async fn hello_world(_req: Request, _url: Url) -> MyResult<Response> {
-    internal_err!(
-        Response::new_with_opt_str_and_init(
-            Some("Hello, world from Rust"),
-            ResponseInit::new().status(200)
-        )
-    )
+    Response::new_with_opt_str_and_init(
+        Some("Hello, world from Rust"),
+        ResponseInit::new().status(200)
+    ).internal_err()
 }
 
 #[wasm_bindgen]

src/sn.rs

@@ -1,7 +1,7 @@
 // Interface for Standard Notes (Actions)
 use crate::CONFIG;
 use crate::router::Router;
-use crate::utils::{Error, MyResult};
+use crate::utils::*;
 use serde::{Serialize, Serializer};
 use std::vec::Vec;
 use web_sys::*;
@@ -47,21 +47,17 @@ async fn get_actions(_req: Request, url: Url) -> MyResult<Response> {
         actions
     };
 
-    internal_err!(
-        Response::new_with_opt_str_and_init(
-            Some(&internal_err!(
-                serde_json::to_string(&info)
-            )?),
-            ResponseInit::new()
-                .status(200)
-                .headers({
-                    let headers = Headers::new().unwrap();
-                    headers.set("Content-Type", "application/json").unwrap();
-                    cors!(headers);
-                    headers
-                }.as_ref())
-        )
-    )
+    Response::new_with_opt_str_and_init(
+        Some(&serde_json::to_string(&info).internal_err()?),
+        ResponseInit::new()
+            .status(200)
+            .headers({
+                let headers = Headers::new().unwrap();
+                 headers.set("Content-Type", "application/json").unwrap();
+                cors!(headers);
+                headers
+            }.as_ref())
+    ).internal_err()
 }
 
 pub enum Verb {

src/utils.rs

@@ -25,12 +25,15 @@ macro_rules! cors {
     };
 }
 
-// Ignore any error and return InternalError for them all
-// Used in place of ugly `.unwrap()`.
-#[macro_export]
-macro_rules! internal_err {
-    ($result:expr) => {
-        $result.map_err(|_| crate::utils::Error::InternalError())
+pub trait ResultExt<T, E> {
+    // Ignore any error and return InternalError for them all
+    // Used in place of ugly `.unwrap()`.
+    fn internal_err(self) -> Result<T, Error>;
+}
+
+impl <T, E> ResultExt<T, E> for Result<T, E> {
+    fn internal_err(self) -> Result<T, Error> {
+        self.map_err(|_| crate::utils::Error::InternalError())
     }
 }