From 057348959c452348253c3cce7eca1efdd5d89aa9 Mon Sep 17 00:00:00 2001
From: Andreas Louv <andreas@louv.dk>
Date: Wed, 12 Apr 2023 10:23:07 +0200
Subject: [PATCH] Add support for a 'goto ...' language server

---
 autoload/lsp/buffer.vim |  4 ++++
 autoload/lsp/lsp.vim    | 10 +++++-----
 doc/lsp.txt             |  4 ++++
 3 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/autoload/lsp/buffer.vim b/autoload/lsp/buffer.vim
index 8618286..c9f4ff7 100644
--- a/autoload/lsp/buffer.vim
+++ b/autoload/lsp/buffer.vim
@@ -47,6 +47,10 @@ export def BufLspServerGet(bnr: number, domain: string = null_string): dict<any>
 
   var SupportedCheckFns = {
     'completion': (lspserver) => lspserver.isCompletionProvider,
+    'definition': (lspserver) => lspserver.isDefinitionProvider,
+    'declaration': (lspserver) => lspserver.isDeclarationProvider,
+    'typeDefinition': (lspserver) => lspserver.isTypeDefinitionProvider,
+    'implementation': (lspserver) => lspserver.isImplementationProvider,
     'documentFormatting': (lspserver) => lspserver.isDocumentFormattingProvider,
   }
 
diff --git a/autoload/lsp/lsp.vim b/autoload/lsp/lsp.vim
index d8bf557..0c84678 100644
--- a/autoload/lsp/lsp.vim
+++ b/autoload/lsp/lsp.vim
@@ -255,7 +255,7 @@ enddef
 
 # Go to a definition using "textDocument/definition" LSP request
 export def GotoDefinition(peek: bool, cmdmods: string)
-  var lspserver: dict<any> = buf.CurbufGetServerChecked()
+  var lspserver: dict<any> = buf.CurbufGetServerChecked('definition')
   if lspserver->empty()
     return
   endif
@@ -265,7 +265,7 @@ enddef
 
 # Go to a declaration using "textDocument/declaration" LSP request
 export def GotoDeclaration(peek: bool, cmdmods: string)
-  var lspserver: dict<any> = buf.CurbufGetServerChecked()
+  var lspserver: dict<any> = buf.CurbufGetServerChecked('declaration')
   if lspserver->empty()
     return
   endif
@@ -275,7 +275,7 @@ enddef
 
 # Go to a type definition using "textDocument/typeDefinition" LSP request
 export def GotoTypedef(peek: bool, cmdmods: string)
-  var lspserver: dict<any> = buf.CurbufGetServerChecked()
+  var lspserver: dict<any> = buf.CurbufGetServerChecked('typeDefinition')
   if lspserver->empty()
     return
   endif
@@ -285,7 +285,7 @@ enddef
 
 # Go to a implementation using "textDocument/implementation" LSP request
 export def GotoImplementation(peek: bool, cmdmods: string)
-  var lspserver: dict<any> = buf.CurbufGetServerChecked()
+  var lspserver: dict<any> = buf.CurbufGetServerChecked('implementation')
   if lspserver->empty()
     return
   endif
@@ -1045,7 +1045,7 @@ enddef
 
 # Function to use with the 'tagfunc' option.
 export def TagFunc(pat: string, flags: string, info: dict<any>): any
-  var lspserver: dict<any> = buf.CurbufGetServerChecked()
+  var lspserver: dict<any> = buf.CurbufGetServerChecked('definition')
   if lspserver->empty()
     return v:null
   endif
diff --git a/doc/lsp.txt b/doc/lsp.txt
index 4f373ba..ea71aba 100644
--- a/doc/lsp.txt
+++ b/doc/lsp.txt
@@ -1365,6 +1365,10 @@ servers should be used for a given method.  The following flags are supported
 >
 #{
 	completion: true,
+	definition: true,
+	declaration: true,
+	typeDefinition: true,
+	implementation: true,
 	documentFormatting: true
 }
 <
-- 
2.48.1