Hook up docs

schala-repl/src/repl/mod.rs

@@ -310,7 +310,17 @@ impl Repl {
           CommandTree::nonterm("go", None, vec![]),
         ]
       ),
-      CommandTree::nonterm_no_further_tab_completions("doc", Some("Get language-specific help for an item")),
+      CommandTree::term_with_function("doc", Some("Get language-specific help for an item"), vec![], Box::new(|repl: &mut Repl, cmds: &[&str]| {
+        cmds.get(0).map(|cmd| {
+          let source = cmd.to_string();
+          let meta = LangMetaRequest::Docs { source };
+          let cur_state = repl.get_cur_language_state();
+          match cur_state.request_meta(meta) {
+            LangMetaResponse::Docs { doc_string } => Some(doc_string),
+            _ => Some(format!("Invalid doc response"))
+          }
+        }).unwrap_or(Some(format!(":docs needs an argument")))
+      }))
     ])
   }
 }