code housekeeping

src/doc.rs

@@ -3,6 +3,7 @@ use codespan_reporting::diagnostic::{Diagnostic, Label};
 use serde::Deserialize;
 
 use crate::{
+    config::Config,
     state::{FileId, TomlError, Treehouse, toml_error_to_diagnostic},
     tree::attributes::{Picture, timestamp_from_id},
 };
@@ -77,7 +78,11 @@ pub struct IncludeFeed {
 }
 
 impl Doc {
-    pub fn parse(treehouse: &mut Treehouse, file_id: FileId) -> (Doc, Vec<Diagnostic<FileId>>) {
+    pub fn parse(
+        treehouse: &mut Treehouse,
+        config: &Config,
+        file_id: FileId,
+    ) -> (Doc, Vec<Diagnostic<FileId>>) {
         let mut diagnostics = vec![];
 
         let source = treehouse.source(file_id).input();
@@ -125,6 +130,17 @@ impl Doc {
                         ]),
                 );
             }
+
+            for tag in &attributes.tags {
+                if !config.feed.tags.contains(tag) {
+                    diagnostics.push(
+                        Diagnostic::warning()
+                            .with_code("attr")
+                            .with_message(format!("doc has unregistered tag `{tag}`"))
+                            .with_labels(vec![Label::primary(file_id, attributes_span.clone())]),
+                    );
+                }
+            }
         }
 
         (