Get rid of all dependencies

.github/workflows/ci.yml

@@ -32,14 +32,35 @@ jobs:
         run: cargo clean
       - name: cargo test
         run: cargo test --all-targets
-  allow:
+
+  allow-check:
     runs-on: ubuntu-latest
     strategy:
       matrix:
         toolchain: ["1.43.0", "1.80.0"]
     env:
       RUSTFLAGS: "-D warnings"
       CARGO_NET_GIT_FETCH_WITH_CLI: "true"
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.toolchain }}
+      - name: cargo check
+        run: cargo check --all-targets
+      - name: cargo clean
+        run: cargo clean
+      - name: cargo test
+        run: cargo test --all-targets
+
+  allow-clippy:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        toolchain: ["1.64.0", "1.80.0"] # rustversion only works with clippy >= 1.64.0
+    env:
+      RUSTFLAGS: "-D warnings"
+      CARGO_NET_GIT_FETCH_WITH_CLI: "true"
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@master

Cargo.toml

@@ -13,6 +13,4 @@ keywords = [ "expect", "lint", "macro", "clippy", "warnings"]
 proc-macro = true
 
 [dependencies]
-proc-macro2 = "=1.0.60" # pinned for 1.38.0 compatibility
-quote = "=1.0.28"       # pinned for 1.38.0 compatibility
 rustversion = "1.0.17"

src/lib.rs

@@ -18,15 +18,7 @@ pub fn expect(
     attr: proc_macro::TokenStream,
     item: proc_macro::TokenStream,
 ) -> proc_macro::TokenStream {
-    use proc_macro2::TokenStream;
-    use quote::quote;
-    let attr = TokenStream::from(attr);
-    let item = TokenStream::from(item);
-    let expanded = quote! {
-        #[allow(#attr)]
-        #item
-    };
-    expanded.into()
+    replace_attr_name_with(attr, item, "allow")
 }
 
 #[rustversion::any(since(1.81), all(nightly, since(2024-06-27)))]
@@ -35,13 +27,31 @@ pub fn expect(
     attr: proc_macro::TokenStream,
     item: proc_macro::TokenStream,
 ) -> proc_macro::TokenStream {
-    use proc_macro2::TokenStream;
-    use quote::quote;
-    let attr = TokenStream::from(attr);
-    let item = TokenStream::from(item);
-    let expanded = quote! {
-        #[expect(#attr)]
-        #item
-    };
-    expanded.into()
+    replace_attr_name_with(attr, item, "expect")
+}
+
+fn replace_attr_name_with(
+    attr: proc_macro::TokenStream,
+    item: proc_macro::TokenStream,
+    allow_or_expect: &str,
+) -> proc_macro::TokenStream {
+    use proc_macro::{Delimiter, Group, Ident, Punct, Spacing, Span, TokenStream, TokenTree};
+    use std::iter::once;
+    let mut s = TokenStream::new();
+    s.extend(once(TokenTree::from(Punct::new('#', Spacing::Alone))));
+    let mut attr_inner = TokenStream::new();
+    attr_inner.extend(once(TokenTree::from(Ident::new(
+        allow_or_expect,
+        Span::call_site(),
+    ))));
+    attr_inner.extend(once(TokenTree::from(Group::new(
+        Delimiter::Parenthesis,
+        attr,
+    ))));
+    s.extend(once(TokenTree::from(Group::new(
+        Delimiter::Bracket,
+        attr_inner,
+    ))));
+    s.extend(item);
+    s
 }