59 lines
1.8 KiB
Rust
59 lines
1.8 KiB
Rust
|
// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
|
||
|
|
// file at the top-level directory of this distribution and at
|
||
|
|
// http://rust-lang.org/COPYRIGHT.
|
||
|
|
//
|
||
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
||
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
||
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
||
|
|
// option. This file may not be copied, modified, or distributed
|
||
|
|
// except according to those terms.
|
||
|
|
|
||
|
|
// no-prefer-dynamic
|
||
|
|
|
||
|
|
#![crate_type = "proc-macro"]
|
||
|
|
|
||
|
|
extern crate proc_macro;
|
||
|
|
|
||
|
|
use proc_macro::TokenStream;
|
||
|
|
|
||
|
|
#[proc_macro_attribute]
|
||
|
|
pub fn expect_let(attr: TokenStream, item: TokenStream) -> TokenStream {
|
||
|
|
assert!(attr.to_string().is_empty());
|
||
|
|
assert_eq!(item.to_string(), "let string = \"Hello, world!\";");
|
||
|
|
item
|
||
|
|
}
|
||
|
|
|
||
|
|
#[proc_macro_attribute]
|
||
|
|
pub fn expect_print_stmt(attr: TokenStream, item: TokenStream) -> TokenStream {
|
||
|
|
assert!(attr.to_string().is_empty());
|
||
|
|
assert_eq!(item.to_string(), "println!(\"{}\" , string);");
|
||
|
|
item
|
||
|
|
}
|
||
|
|
|
||
|
|
#[proc_macro_attribute]
|
||
|
|
pub fn expect_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
|
||
|
|
assert!(attr.to_string().is_empty());
|
||
|
|
assert_eq!(item.to_string(), "print_str(\"string\")");
|
||
|
|
item
|
||
|
|
}
|
||
|
|
|
||
|
|
#[proc_macro_attribute]
|
||
|
|
pub fn expect_print_expr(attr: TokenStream, item: TokenStream) -> TokenStream {
|
||
|
|
assert!(attr.to_string().is_empty());
|
||
|
|
assert_eq!(item.to_string(), "println!(\"{}\" , string)");
|
||
|
|
item
|
||
|
|
}
|
||
|
|
|
||
|
|
#[proc_macro_attribute]
|
||
|
|
pub fn duplicate(attr: TokenStream, item: TokenStream) -> TokenStream {
|
||
|
|
assert!(attr.to_string().is_empty());
|
||
|
|
format!("{}, {}", item, item).parse().unwrap()
|
||
|
|
}
|
||
|
|
|
||
|
|
#[proc_macro_attribute]
|
||
|
|
pub fn no_output(attr: TokenStream, item: TokenStream) -> TokenStream {
|
||
|
|
assert!(attr.to_string().is_empty());
|
||
|
|
assert!(!item.to_string().is_empty());
|
||
|
|
"".parse().unwrap()
|
||
|
|
}
|