[add] start symbols

webapp/lsp/lsp-text.xqm

@@ -14,7 +14,8 @@ declare variable $lsp-text:methods:=map{
 
   "textDocument/hover":  lsp-text:hover#1,
   "textDocument/completion": lsp-text:completion#1,
-  "textDocument/formatting" : lsp-text:format#1
+  "textDocument/formatting" : lsp-text:format#1,
+   "textDocument/documentSymbol" : lsp-text:symbols#1
 };
 
 (:~  hover :)
@@ -29,6 +30,18 @@ as map(*)
 return rpc:result({"contents":$r},$json)
 };
 
+(:~  symbols :)
+declare
+function lsp-text:symbols($json as map(*)) 
+as map(*)?
+{
+ let $doc:=$json?params?textDocument?uri
+ return map{
+    "jsonrpc": "2.0",
+    "id": $json?id,
+    "result":()
+  }
+};
 
 declare
 function lsp-text:completion($json as map(*))