basex-lsp/webapp/lsp/jsonrpc.xqm

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(:~
: jsonrpc
: @author andy bunce
:)
module namespace lsprpc = 'lsprpc';
declare variable $lsprpc:methods:=map{
"initialize" : lsprpc:method-initialize#1,
"initialized" : lsprpc:method-unknown#1,
"workspace/didChangeConfiguration" :lsprpc:method-unknown#1,
"textDocument/didOpen": lsprpc:method-unknown#1,
"textDocument/didClose" : lsprpc:method-unknown#1
};
(:~ return map if $msg is jsonrpc else empty :)
declare
function lsprpc:parse($msg as xs:string)
as map(*)?
{
try {
let $json:=parse-json($msg)
return if($json?jsonrpc="2.0" and exists($json?method))
then $json
else ()
} catch *{
()
}
};
(:~ send replay to $json :)
declare
function lsprpc:reply($json as map(*))
as empty-sequence() {
let $method := $json?method
let $f :=$lsprpc:methods?($method)
let $response := $f!.($json)
return if(exists($response)) then ws:send($response=>trace("REPLY: "),ws:id())
};
(:~ canned initialize response :)
declare
function lsprpc:method-initialize($json as map(*))
as map(*)?
{
``[{"jsonrpc":"2.0","id":0,
"result":{"capabilities":{"textDocumentSync":2,"completionProvider":{"resolveProvider":false,"triggerCharacters":["\"",":"]},"hoverProvider":true,"documentSymbolProvider":true,"documentRangeFormattingProvider":false,"colorProvider":{},"foldingRangeProvider":true,"selectionRangeProvider":true,"documentLinkProvider":{}}}}]``
=>parse-json()
};
(:~ unknown method response :)
declare
function lsprpc:method-unknown($json as map(*))
as map(*)?
{
let $_:=trace($json?method,"unknown")
return ()
};