diff options
| -rw-r--r-- | src/librustdoc/clean/types.rs | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/src/librustdoc/clean/types.rs b/src/librustdoc/clean/types.rs index 38123816527..4f99476ebfa 100644 --- a/src/librustdoc/clean/types.rs +++ b/src/librustdoc/clean/types.rs @@ -481,6 +481,33 @@ impl Attributes { }) } + /// Enforce the format of attributes inside `#[doc(...)]`. + pub fn check_doc_attributes( + diagnostic: &::rustc_errors::Handler, + mi: &ast::MetaItem, + ) -> Option<(String, String)> { + mi.meta_item_list().and_then(|list| { + for meta in list { + if meta.check_name(sym::alias) { + if !meta.is_value_str() + || meta + .value_str() + .map(|s| s.to_string()) + .unwrap_or_else(String::new) + .is_empty() + { + diagnostic.span_err( + meta.span(), + "doc alias attribute expects a string: #[doc(alias = \"0\")]", + ); + } + } + } + + None + }) + } + pub fn has_doc_flag(&self, flag: Symbol) -> bool { for attr in &self.other_attrs { if !attr.check_name(sym::doc) { @@ -524,6 +551,7 @@ impl Attributes { } else { if attr.check_name(sym::doc) { if let Some(mi) = attr.meta() { + Attributes::check_doc_attributes(&diagnostic, &mi); if let Some(cfg_mi) = Attributes::extract_cfg(&mi) { // Extracted #[doc(cfg(...))] match Cfg::parse(cfg_mi) { |