Merge pull request #8 from dtolnay/syn

Update to syn 2

.clippy.toml

@@ -1 +1 @@
-msrv = "1.31.0"
+msrv = "1.56.0"

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        rust: [nightly, beta, stable, 1.31.0]
+        rust: [nightly, beta, stable, 1.56.0]
     timeout-minutes: 45
     steps:
       - uses: actions/checkout@v3

Cargo.toml

@@ -9,15 +9,15 @@ edition = "2018"
 keywords = ["enum", "integer"]
 license = "MIT OR Apache-2.0"
 repository = "https://github.com/dtolnay/enumn"
-rust-version = "1.31"
+rust-version = "1.56"
 
 [lib]
 proc-macro = true
 
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1.0"
-syn = "1.0"
+syn = "2.0"
 
 [package.metadata.docs.rs]
 targets = ["x86_64-unknown-linux-gnu"]

src/lib.rs

@@ -141,7 +141,7 @@ pub fn derive(input: TokenStream) -> TokenStream {
     // Parse repr attribute like #[repr(u16)].
     let mut repr = None;
     for attr in input.attrs {
-        if attr.path.is_ident("repr") {
+        if attr.path().is_ident("repr") {
             if let Ok(name) = attr.parse_args::<Ident>() {
                 match name.to_string().as_str() {
                     "u8" | "u16" | "u32" | "u64" | "u128" | "usize" | "i8" | "i16" | "i32"