35 lines
1.4 KiB
Rust
35 lines
1.4 KiB
Rust
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// force-host
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// no-prefer-dynamic
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#![crate_type = "proc-macro"]
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extern crate proc_macro;
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use proc_macro::TokenStream;
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macro_rules! checker {
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($attr_name:ident, $expected:literal) => {
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#[proc_macro_attribute]
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pub fn $attr_name(attr: TokenStream, input: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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assert_eq!(input.to_string(), $expected);
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TokenStream::new()
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}
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}
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}
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checker!(attr_extern, r#"extern "C" {
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fn ffi(#[a1] arg1: i32, #[a2] ...);
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}"#);
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checker!(attr_extern_cvar, r#"unsafe extern "C" fn cvar(arg1: i32, #[a1] mut args: ...) { }"#);
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checker!(attr_alias, "type Alias = fn(#[a1] u8, #[a2] ...);");
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checker!(attr_free, "fn free(#[a1] arg1: u8) { let lam = |#[a2] W(x), #[a3] y| (); }");
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checker!(attr_inherent_1, "fn inherent1(#[a1] self, #[a2] arg1: u8) { }");
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checker!(attr_inherent_2, "fn inherent2(#[a1] &self, #[a2] arg1: u8) { }");
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checker!(attr_inherent_3, "fn inherent3<'a>(#[a1] &'a mut self, #[a2] arg1: u8) { }");
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checker!(attr_inherent_4, "fn inherent4<'a>(#[a1] self: Box<Self>, #[a2] arg1: u8) { }");
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checker!(attr_trait_1, "fn trait1(#[a1] self, #[a2] arg1: u8);");
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checker!(attr_trait_2, "fn trait2(#[a1] &self, #[a2] arg1: u8);");
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checker!(attr_trait_3, "fn trait3<'a>(#[a1] &'a mut self, #[a2] arg1: u8);");
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checker!(attr_trait_4, "fn trait4<'a>(#[a1] self: Box<Self>, #[a2] arg1: u8, #[a3] Vec<u8>);");
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