|
| 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 | + |
| 13 | +// error-pattern:expected identifier, found keyword `let` |
| 14 | + |
| 15 | +#![feature(quote, rustc_private)] |
| 16 | + |
| 17 | +extern crate syntax; |
| 18 | + |
| 19 | +use syntax::ast; |
| 20 | +use syntax::codemap; |
| 21 | +use syntax::parse; |
| 22 | +use syntax::print::pprust; |
| 23 | + |
| 24 | +trait FakeExtCtxt { |
| 25 | + fn call_site(&self) -> codemap::Span; |
| 26 | + fn cfg(&self) -> ast::CrateConfig; |
| 27 | + fn ident_of(&self, st: &str) -> ast::Ident; |
| 28 | + fn name_of(&self, st: &str) -> ast::Name; |
| 29 | + fn parse_sess(&self) -> &parse::ParseSess; |
| 30 | +} |
| 31 | + |
| 32 | +impl FakeExtCtxt for parse::ParseSess { |
| 33 | + fn call_site(&self) -> codemap::Span { |
| 34 | + codemap::Span { |
| 35 | + lo: codemap::BytePos(0), |
| 36 | + hi: codemap::BytePos(0), |
| 37 | + expn_id: codemap::NO_EXPANSION, |
| 38 | + } |
| 39 | + } |
| 40 | + fn cfg(&self) -> ast::CrateConfig { Vec::new() } |
| 41 | + fn ident_of(&self, st: &str) -> ast::Ident { |
| 42 | + parse::token::str_to_ident(st) |
| 43 | + } |
| 44 | + fn name_of(&self, st: &str) -> ast::Name { |
| 45 | + parse::token::intern(st) |
| 46 | + } |
| 47 | + fn parse_sess(&self) -> &parse::ParseSess { self } |
| 48 | +} |
| 49 | + |
| 50 | +fn main() { |
| 51 | + let cx = parse::new_parse_sess(); |
| 52 | + |
| 53 | + assert_eq!(pprust::expr_to_string(&*quote_expr!(&cx, 23)), "23"); |
| 54 | + |
| 55 | + let expr = quote_expr!(&cx, let x isize = 20;); |
| 56 | + assert_eq!(pprust::expr_to_string(&*expr), "let x isize = 20;"); |
| 57 | +} |
0 commit comments