add a tagging system to the website

src/state.rs

@@ -9,6 +9,7 @@ use tracing::instrument;
 use ulid::Ulid;
 
 use crate::{
+    doc::Doc,
     tree::{SemaBranchId, SemaRoots, SemaTree},
     vfs::{VPath, VPathBuf},
 };
@@ -63,17 +64,24 @@ impl File {
 #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)]
 pub struct FileId(usize);
 
+#[derive(Debug, Clone, Default)]
+pub struct Tag {
+    pub files: Vec<FileId>,
+}
+
 /// Treehouse compilation context.
 pub struct Treehouse {
     pub files: Vec<File>,
     pub files_by_tree_path: HashMap<VPathBuf, FileId>, // trees only
     pub files_by_doc_path: HashMap<VPathBuf, FileId>,  // docs only
-    pub feeds_by_name: HashMap<String, FileId>,
+    pub tags: HashMap<String, Tag>,
 
     pub tree: SemaTree,
     pub branches_by_named_id: HashMap<String, SemaBranchId>,
     pub roots: HashMap<FileId, SemaRoots>,
 
+    pub docs: HashMap<FileId, Doc>,
+
     pub branch_redirects: HashMap<String, SemaBranchId>,
 
     pub missingno_generator: ulid::Generator,
@@ -85,12 +93,14 @@ impl Treehouse {
             files: vec![],
             files_by_tree_path: HashMap::new(),
             files_by_doc_path: HashMap::new(),
-            feeds_by_name: HashMap::new(),
+            tags: HashMap::new(),
 
             tree: SemaTree::default(),
             branches_by_named_id: HashMap::new(),
             roots: HashMap::new(),
 
+            docs: HashMap::new(),
+
             branch_redirects: HashMap::new(),
 
             missingno_generator: ulid::Generator::new(),