src/test/rustdoc/doc-cfg.rs

   1 // Copyright 2017 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 #![feature(doc_cfg)]
  12 #![feature(target_feature, cfg_target_feature)]
  13
  14 // @has doc_cfg/struct.Portable.html
  15 // @!has - '//*[@id="main"]/*[@class="stability"]/*[@class="stab portability"]' ''
  16 // @has - '//*[@id="method.unix_and_arm_only_function"]' 'fn unix_and_arm_only_function()'
  17 // @has - '//*[@class="stab portability"]' 'This is supported on Unix and ARM only.'
  18 pub struct Portable;
  19
  20 // @has doc_cfg/unix_only/index.html \
  21 //  '//*[@id="main"]/*[@class="stability"]/*[@class="stab portability"]' \
  22 //  'This is supported on Unix only.'
  23 // @matches - '//*[@class=" module-item"]//*[@class="stab portability"]' '\AUnix\Z'
  24 // @matches - '//*[@class=" module-item"]//*[@class="stab portability"]' '\AUnix and ARM\Z'
  25 // @count - '//*[@class="stab portability"]' 3
  26 #[doc(cfg(unix))]
  27 pub mod unix_only {
  28     // @has doc_cfg/unix_only/fn.unix_only_function.html \
  29     //  '//*[@id="main"]/*[@class="stability"]/*[@class="stab portability"]' \
  30     //  'This is supported on Unix only.'
  31     // @count - '//*[@class="stab portability"]' 1
  32     pub fn unix_only_function() {
  33         content::should::be::irrelevant();
  34     }
  35
  36     // @has doc_cfg/unix_only/trait.ArmOnly.html \
  37     //  '//*[@id="main"]/*[@class="stability"]/*[@class="stab portability"]' \
  38     //  'This is supported on Unix and ARM only.'
  39     // @count - '//*[@class="stab portability"]' 3
  40     #[doc(cfg(target_arch = "arm"))]
  41     pub trait ArmOnly {
  42         fn unix_and_arm_only_function();
  43     }
  44
  45     impl ArmOnly for super::Portable {
  46         fn unix_and_arm_only_function() {}
  47     }
  48 }
  49
  50 // tagging a function with `#[target_feature]` creates a doc(cfg(target_feature)) node for that
  51 // item as well
  52
  53 // the portability header is different on the module view versus the full view
  54 // @has doc_cfg/index.html
  55 // @matches - '//*[@class=" module-item"]//*[@class="stab portability"]' '\Aavx\Z'
  56
  57 // @has doc_cfg/fn.uses_target_feature.html
  58 // @has - '//*[@id="main"]/*[@class="stability"]/*[@class="stab portability"]' \
  59 //        'This is supported with target feature avx only.'
  60 #[target_feature(enable = "avx")]
  61 pub unsafe fn uses_target_feature() {
  62     content::should::be::irrelevant();
  63 }
  64
  65 // @has doc_cfg/fn.uses_cfg_target_feature.html
  66 // @has - '//*[@id="main"]/*[@class="stability"]/*[@class="stab portability"]' \
  67 //        'This is supported with target feature avx only.'
  68 #[doc(cfg(target_feature = "avx"))]
  69 pub fn uses_cfg_target_feature() {
  70     uses_target_feature();
  71 }