src/test/run-pass-fulldeps/qquote.rs

   1 // Copyright 2015 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 #![feature(quote, rustc_private)]
  14
  15 extern crate syntax;
  16
  17 use syntax::codemap::DUMMY_SP;
  18 use syntax::print::pprust::*;
  19
  20 fn main() {
  21     let ps = syntax::parse::ParseSess::new();
  22     let mut cx = syntax::ext::base::ExtCtxt::new(
  23         &ps, vec![],
  24         syntax::ext::expand::ExpansionConfig::default("qquote".to_string()));
  25     cx.bt_push(syntax::codemap::ExpnInfo {
  26         call_site: DUMMY_SP,
  27         callee: syntax::codemap::NameAndSpan {
  28             name: "".to_string(),
  29             format: syntax::codemap::MacroBang,
  30             allow_internal_unstable: false,
  31             span: None,
  32         }
  33     });
  34     let cx = &mut cx;
  35
  36     macro_rules! check {
  37         ($f: ident, $($e: expr),+; $expect: expr) => ({
  38             $(assert_eq!($f(&$e), $expect);)+
  39         });
  40     }
  41
  42     let abc = quote_expr!(cx, 23);
  43     check!(expr_to_string, abc, *quote_expr!(cx, $abc); "23");
  44
  45     let ty = quote_ty!(cx, isize);
  46     check!(ty_to_string, ty, *quote_ty!(cx, $ty); "isize");
  47
  48     let item = quote_item!(cx, static x: $ty = 10;).unwrap();
  49     check!(item_to_string, item, quote_item!(cx, $item).unwrap(); "static x: isize = 10;");
  50
  51     let twenty: u16 = 20;
  52     let stmt = quote_stmt!(cx, let x = $twenty;).unwrap();
  53     check!(stmt_to_string, stmt, *quote_stmt!(cx, $stmt).unwrap(); "let x = 20u16;");
  54
  55     let pat = quote_pat!(cx, Some(_));
  56     check!(pat_to_string, pat, *quote_pat!(cx, $pat); "Some(_)");
  57
  58     let expr = quote_expr!(cx, (x, y));
  59     let arm = quote_arm!(cx, (ref x, ref y) => $expr,);
  60     check!(arm_to_string, arm, quote_arm!(cx, $arm); " (ref x, ref y) => (x, y),");
  61
  62     let attr = quote_attr!(cx, #![cfg(foo = "bar")]);
  63     check!(attribute_to_string, attr, quote_attr!(cx, $attr); r#"#![cfg(foo = "bar")]"#);
  64 }