diff options
Diffstat (limited to 'src/test')
4 files changed, 88 insertions, 0 deletions
diff --git a/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.rs b/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.rs new file mode 100644 index 00000000000..e1401653ba3 --- /dev/null +++ b/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.rs @@ -0,0 +1,22 @@ +// 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. + +// aux-build:attribute-spans-preserved.rs + +#![feature(use_extern_macros)] + +extern crate attribute_spans_preserved as foo; + +use foo::foo; + +#[ foo ( let y: u32 = "z"; ) ] //~ ERROR: mismatched types +#[ bar let x: u32 = "y"; ] //~ ERROR: mismatched types +fn main() { +} diff --git a/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.stderr b/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.stderr new file mode 100644 index 00000000000..fe62bd23b87 --- /dev/null +++ b/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.stderr @@ -0,0 +1,21 @@ +error[E0308]: mismatched types + --> $DIR/attribute-spans-preserved.rs:19:23 + | +LL | #[ foo ( let y: u32 = "z"; ) ] //~ ERROR: mismatched types + | ^^^ expected u32, found reference + | + = note: expected type `u32` + found type `&'static str` + +error[E0308]: mismatched types + --> $DIR/attribute-spans-preserved.rs:20:21 + | +LL | #[ bar let x: u32 = "y"; ] //~ ERROR: mismatched types + | ^^^ expected u32, found reference + | + = note: expected type `u32` + found type `&'static str` + +error: aborting due to 2 previous errors + +For more information about this error, try `rustc --explain E0308`. diff --git a/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.stdout b/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.stdout new file mode 100644 index 00000000000..33dc064ef68 --- /dev/null +++ b/src/test/ui-fulldeps/proc-macro/attribute-spans-preserved.stdout @@ -0,0 +1 @@ +fn main ( ) { let y : u32 = "z" ; let x : u32 = "y" ; } diff --git a/src/test/ui-fulldeps/proc-macro/auxiliary/attribute-spans-preserved.rs b/src/test/ui-fulldeps/proc-macro/auxiliary/attribute-spans-preserved.rs new file mode 100644 index 00000000000..e725cc7afb8 --- /dev/null +++ b/src/test/ui-fulldeps/proc-macro/auxiliary/attribute-spans-preserved.rs @@ -0,0 +1,44 @@ +// 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::*; + +#[proc_macro_attribute] +pub fn foo(attr: TokenStream, f: TokenStream) -> TokenStream { + let mut tokens = f.into_iter(); + assert_eq!(tokens.next().unwrap().to_string(), "#"); + let next_attr = match tokens.next().unwrap() { + TokenTree::Group(g) => g, + _ => panic!(), + }; + + let fn_tok = tokens.next().unwrap(); + let ident_tok = tokens.next().unwrap(); + let args_tok = tokens.next().unwrap(); + let body = tokens.next().unwrap(); + + let new_body = attr.into_iter() + .chain(next_attr.stream().into_iter().skip(1)); + + let tokens = vec![ + fn_tok, + ident_tok, + args_tok, + Group::new(Delimiter::Brace, new_body.collect()).into(), + ].into_iter().collect::<TokenStream>(); + println!("{}", tokens); + return tokens +} |