mirror of https://github.com/rust-lang/rust
50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
//@ 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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#[proc_macro_attribute]
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pub fn expect_let(attr: TokenStream, item: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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assert_eq!(item.to_string(), "let string = \"Hello, world!\";");
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item
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}
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#[proc_macro_attribute]
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pub fn expect_my_macro_stmt(attr: TokenStream, item: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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assert_eq!(item.to_string(), "my_macro! (\"{}\", string);");
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item
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}
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#[proc_macro_attribute]
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pub fn expect_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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assert_eq!(item.to_string(), "print_str(\"string\")");
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item
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}
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#[proc_macro_attribute]
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pub fn expect_my_macro_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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assert_eq!(item.to_string(), "my_macro!(\"{}\", string)");
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item
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}
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#[proc_macro_attribute]
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pub fn duplicate(attr: TokenStream, item: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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format!("{}, {}", item, item).parse().unwrap()
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}
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#[proc_macro_attribute]
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pub fn no_output(attr: TokenStream, item: TokenStream) -> TokenStream {
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assert!(attr.to_string().is_empty());
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assert!(!item.to_string().is_empty());
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"".parse().unwrap()
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}
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