feat: Inductive constructor doc strings

DocGen4/Output/Inductive.lean

@@ -7,10 +7,21 @@ namespace Output
 
 open scoped DocGen4.Jsx
 
-def ctorToHtml (i : Process.NameInfo) : HtmlM Html := do
-  let shortName := i.name.components'.head!.toString
-  let name := i.name.toString
-  pure <li class="constructor" id={name}>{shortName} : [←infoFormatToHtml i.type]</li>
+def ctorToHtml (c : Process.NameInfo) : HtmlM Html := do
+  let shortName := c.name.components'.head!.toString
+  let name := c.name.toString
+  if let some doc := c.doc then
+    let renderedDoc ← docStringToHtml doc
+    pure
+      <li class="constructor" id={name}>
+        <div class="inductive_ctor_doc">[renderedDoc]</div>
+        {shortName} : [←infoFormatToHtml c.type]
+      </li>
+  else
+    pure
+      <li class="constructor" id={name}>
+        {shortName} : [←infoFormatToHtml c.type]
+      </li>
 
 def inductiveToHtml (i : Process.InductiveInfo) : HtmlM (Array Html) := do
   let constructorsHtml := <ul class="constructors">[← i.ctors.toArray.mapM ctorToHtml]</ul>

static/style.css

@@ -491,6 +491,11 @@ pre code { padding: 0 0; }
     margin-left: 2ex;
 }
 
+.inductive_ctor_doc  {
+    text-indent: 2ex;
+    padding-top: 1ex;
+}
+
 .structure_field_doc {
     text-indent: 0;
     padding-top: 1ex;