compile time validation of path

actix-web-codegen/Cargo.toml

@@ -17,6 +17,7 @@ proc-macro = true
 quote = "1"
 syn = { version = "1", features = ["full", "parsing"] }
 proc-macro2 = "1"
+actix-router = "0.2.7"
 
 [dev-dependencies]
 actix-rt = "2.2"

actix-web-codegen/src/route.rs

@@ -3,6 +3,7 @@ extern crate proc_macro;
 use std::collections::HashSet;
 use std::convert::TryFrom;
 
+use actix_router::ResourceDef;
 use proc_macro::TokenStream;
 use proc_macro2::{Span, TokenStream as TokenStream2};
 use quote::{format_ident, quote, ToTokens, TokenStreamExt};
@@ -113,6 +114,7 @@ impl Args {
                 NestedMeta::Meta(syn::Meta::NameValue(nv)) => {
                     if nv.path.is_ident("name") {
                         if let syn::Lit::Str(lit) = nv.lit {
+                            let _ = ResourceDef::new(lit.value());
                             resource_name = Some(lit);
                         } else {
                             return Err(syn::Error::new_spanned(

actix-web-codegen/tests/trybuild.rs

@@ -10,6 +10,7 @@ fn compile_macros() {
     t.compile_fail("tests/trybuild/route-missing-method-fail.rs");
     t.compile_fail("tests/trybuild/route-duplicate-method-fail.rs");
     t.compile_fail("tests/trybuild/route-unexpected-method-fail.rs");
+    t.compile_fail("tests/trybuild/route-malformed-path-fail.rs");
 
     t.pass("tests/trybuild/docstring-ok.rs");
 }

actix-web-codegen/tests/trybuild/route-malformed-path-fail.rs

@@ -0,0 +1,7 @@
+use actix_web_codegen::*;
+
+#[get("/one/{", other)]
+async fn one() -> String {
+    "Hello World!".to_owned()
+}
+fn main() {}