| // Copyright 2012-2014 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. |
| |
| // ignore-cross-compile |
| // ignore-pretty: does not work well with `--test` |
| |
| #![feature(quote, rustc_private)] |
| |
| extern crate syntax; |
| |
| use syntax::ext::base::ExtCtxt; |
| use syntax::ptr::P; |
| use syntax::parse::PResult; |
| |
| fn syntax_extension(cx: &ExtCtxt) { |
| let e_toks : Vec<syntax::tokenstream::TokenTree> = quote_tokens!(cx, 1 + 2); |
| let p_toks : Vec<syntax::tokenstream::TokenTree> = quote_tokens!(cx, (x, 1 .. 4, *)); |
| |
| let a: P<syntax::ast::Expr> = quote_expr!(cx, 1 + 2); |
| let _b: Option<P<syntax::ast::Item>> = quote_item!(cx, static foo : isize = $e_toks; ); |
| let _c: P<syntax::ast::Pat> = quote_pat!(cx, (x, 1 .. 4, *) ); |
| let _d: Option<syntax::ast::Stmt> = quote_stmt!(cx, let x = $a; ); |
| let _d: syntax::ast::Arm = quote_arm!(cx, (ref x, ref y) = (x, y) ); |
| let _e: P<syntax::ast::Expr> = quote_expr!(cx, match foo { $p_toks => 10 } ); |
| |
| let _f: P<syntax::ast::Expr> = quote_expr!(cx, ()); |
| let _g: P<syntax::ast::Expr> = quote_expr!(cx, true); |
| let _h: P<syntax::ast::Expr> = quote_expr!(cx, 'a'); |
| |
| let i: Option<P<syntax::ast::Item>> = quote_item!(cx, #[derive(Eq)] struct Foo; ); |
| assert!(i.is_some()); |
| |
| let _l: P<syntax::ast::Ty> = quote_ty!(cx, &isize); |
| |
| let _m: Vec<syntax::tokenstream::TokenTree> = quote_matcher!(cx, $($foo:tt,)* bar); |
| let _n: syntax::ast::Attribute = quote_attr!(cx, #![cfg(foo, bar = "baz")]); |
| |
| let _o: Option<P<syntax::ast::Item>> = quote_item!(cx, fn foo<T: ?Sized>() {}); |
| |
| let stmts = vec![ |
| quote_stmt!(cx, let x = 1;).unwrap(), |
| quote_stmt!(cx, let y = 2;).unwrap(), |
| ]; |
| let expr: P<syntax::ast::Expr> = quote_expr!(cx, x + y); |
| } |
| |
| fn main() { |
| } |