autodoc: allow function descriptions expansion

lib/docs/index.html

@@ -266,6 +266,42 @@
         font-weight: bold;
       }
 
+      details[open] summary .sum-less {
+        display: none;
+      }
+
+      details[open] summary .sum-more {
+        display: block;
+      }
+
+      details summary .sum-more {
+        display: none;
+      }
+
+      details summary {
+        list-style-type: none;
+        position: relative;
+        pointer-events: none;
+      }
+
+      details summary::before {
+        content: "[+] ";
+        font-family: var(--mono);
+        color: var(--link-color);
+        position: sticky;
+        float: left;
+        top: 0px;
+        right: -16px;
+        z-index: 1;
+        margin-left: -2em;
+        pointer-events: all;
+        cursor: pointer;
+      }
+
+      details[open] summary::before {
+        content: "[-] ";
+      }
+
       .examples {
         list-style-type: none;
         margin: 0;

lib/docs/main.js

@@ -2466,9 +2466,19 @@ var zigAnalysis;
 
         let docs = getAstNode(decl.src).docs;
         if (docs != null) {
-          tdDesc.innerHTML = shortDescMarkdown(docs);
+          docs = docs.trim();
+          var short = shortDesc(docs);
+          if (short != docs) {
+            short = markdown(short);
+            var long = markdown(docs);
+            tdDesc.innerHTML = 
+            "<details><summary><div class=\"sum-less\">" + short + "</div>" + "<div class=\"sum-more\">" + long + "</div></summary></details>";
+          }
+          else {
+            tdDesc.innerHTML = markdown(short);
+          }
         } else {
-          tdDesc.textContent = "";
+          tdDesc.innerHTML = "<p><i>No documentation provided.</i><p>";
         }
       }
       domSectFns.classList.remove("hidden");
@@ -2897,7 +2907,7 @@ var zigAnalysis;
     });
   }
 
-  function shortDescMarkdown(docs) {
+  function shortDesc(docs){
     const trimmed_docs = docs.trim();
     let index = trimmed_docs.indexOf("\n\n");
     let cut = false;
@@ -2913,7 +2923,11 @@ var zigAnalysis;
 
     let slice = trimmed_docs.slice(0, index);
     if (cut) slice += "...";
-    return markdown(slice);
+    return slice;
+  }
+
+  function shortDescMarkdown(docs) {
+    return markdown(shortDesc(docs));
   }
 
   function markdown(input) {
@@ -3110,6 +3124,13 @@ var zigAnalysis;
       }
       flushRun();
 
+      if (in_code) {
+        in_code = false;
+        parsing_code = false;
+        innerHTML += "</code>";
+        codetag = "";
+      }
+
       while (stack.length > 0) {
         const fmt = stack.pop();
         innerHTML += "</" + fmt.tag + ">";