src/test/ui/proc-macro/auxiliary/attr-stmt-expr-rpass.rs

   1 // force-host
   2 // no-prefer-dynamic
   3
   4 #![crate_type = "proc-macro"]
   5
   6 extern crate proc_macro;
   7
   8 use proc_macro::TokenStream;
   9
  10 #[proc_macro_attribute]
  11 pub fn expect_let(attr: TokenStream, item: TokenStream) -> TokenStream {
  12     assert!(attr.to_string().is_empty());
  13     assert_eq!(item.to_string(), "let string = \"Hello, world!\" ;");
  14     item
  15 }
  16
  17 #[proc_macro_attribute]
  18 pub fn expect_print_stmt(attr: TokenStream, item: TokenStream) -> TokenStream {
  19     assert!(attr.to_string().is_empty());
  20     assert_eq!(item.to_string(), "println! (\"{}\", string) ;");
  21     item
  22 }
  23
  24 #[proc_macro_attribute]
  25 pub fn expect_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
  26     assert!(attr.to_string().is_empty());
  27     assert_eq!(item.to_string(), "print_str(\"string\")");
  28     item
  29 }
  30
  31 #[proc_macro_attribute]
  32 pub fn expect_print_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
  33     assert!(attr.to_string().is_empty());
  34     assert_eq!(item.to_string(), "println! (\"{}\", string)");
  35     item
  36 }
  37
  38 #[proc_macro_attribute]
  39 pub fn no_output(attr: TokenStream, item: TokenStream) -> TokenStream {
  40     assert!(attr.to_string().is_empty());
  41     assert!(!item.to_string().is_empty());
  42     "".parse().unwrap()
  43
  44 }
  45
  46 #[proc_macro_attribute]
  47 pub fn noop(attr: TokenStream, item: TokenStream) -> TokenStream {
  48     assert!(attr.to_string().is_empty());
  49     assert!(!item.to_string().is_empty());
  50     item
  51 }