src/test/run-pass-fulldeps/quote-tokens.rs

   1 // Copyright 2012-2014 The Rust Project Developers. See the COPYRIGHT
   2 // file at the top-level directory of this distribution and at
   3 // http://rust-lang.org/COPYRIGHT.
   4 //
   5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
   6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
   7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
   8 // option. This file may not be copied, modified, or distributed
   9 // except according to those terms.
  10
  11 // ignore-cross-compile
  12 // ignore-pretty: does not work well with `--test`
  13
  14 #![feature(quote, rustc_private)]
  15
  16 extern crate syntax;
  17
  18 use syntax::ext::base::ExtCtxt;
  19 use syntax::ptr::P;
  20 use syntax::parse::PResult;
  21
  22 fn syntax_extension(cx: &ExtCtxt) {
  23     let e_toks : Vec<syntax::ast::TokenTree> = quote_tokens!(cx, 1 + 2);
  24     let p_toks : Vec<syntax::ast::TokenTree> = quote_tokens!(cx, (x, 1 .. 4, *));
  25
  26     let a: P<syntax::ast::Expr> = quote_expr!(cx, 1 + 2);
  27     let _b: Option<P<syntax::ast::Item>> = quote_item!(cx, static foo : isize = $e_toks; );
  28     let _c: P<syntax::ast::Pat> = quote_pat!(cx, (x, 1 .. 4, *) );
  29     let _d: Option<syntax::ast::Stmt> = quote_stmt!(cx, let x = $a; );
  30     let _d: syntax::ast::Arm = quote_arm!(cx, (ref x, ref y) = (x, y) );
  31     let _e: P<syntax::ast::Expr> = quote_expr!(cx, match foo { $p_toks => 10 } );
  32
  33     let _f: P<syntax::ast::Expr> = quote_expr!(cx, ());
  34     let _g: P<syntax::ast::Expr> = quote_expr!(cx, true);
  35     let _h: P<syntax::ast::Expr> = quote_expr!(cx, 'a');
  36
  37     let i: Option<P<syntax::ast::Item>> = quote_item!(cx, #[derive(Eq)] struct Foo; );
  38     assert!(i.is_some());
  39
  40     let _l: P<syntax::ast::Ty> = quote_ty!(cx, &isize);
  41
  42     let _m: Vec<syntax::ast::TokenTree> = quote_matcher!(cx, $($foo:tt,)* bar);
  43     let _n: syntax::ast::Attribute = quote_attr!(cx, #![cfg(foo, bar = "baz")]);
  44
  45     let _o: Option<P<syntax::ast::Item>> = quote_item!(cx, fn foo<T: ?Sized>() {});
  46
  47     let stmts = vec![
  48         quote_stmt!(cx, let x = 1;).unwrap(),
  49         quote_stmt!(cx, let y = 2;).unwrap(),
  50     ];
  51     let expr: P<syntax::ast::Expr> = quote_expr!(cx, x + y);
  52 }
  53
  54 fn main() {
  55 }