From 04b5b04312e641a3644994b332163cc5b668fb36 Mon Sep 17 00:00:00 2001
From: Yegappan Lakshmanan <yegappan@yahoo.com>
Date: Sun, 22 Sep 2024 20:12:08 -0700
Subject: [PATCH] Add support for toggling inlay hints

---
 autoload/lsp/inlayhints.vim |  9 +++++++++
 autoload/lsp/lsp.vim        |  4 +++-
 doc/lsp.txt                 | 14 ++++++++------
 3 files changed, 20 insertions(+), 7 deletions(-)

diff --git a/autoload/lsp/inlayhints.vim b/autoload/lsp/inlayhints.vim
index a7936997..5030c954 100644
--- a/autoload/lsp/inlayhints.vim
+++ b/autoload/lsp/inlayhints.vim
@@ -222,6 +222,15 @@ export def InlayHintsDisable()
   save_showInlayHints = false
 enddef
 
+# Toggle (enable or disable) inlay hints.
+export def InlayHintsToggle()
+  if opt.lspOptions.showInlayHints
+    InlayHintsDisable()
+  else
+    InlayHintsEnable()
+  endif
+enddef
+
 # Some options are changed.  If 'showInlayHints' option is changed, then
 # either enable or disable inlay hints.
 export def LspInlayHintsOptionsChanged()
diff --git a/autoload/lsp/lsp.vim b/autoload/lsp/lsp.vim
index 83f1f4d3..154f861e 100644
--- a/autoload/lsp/lsp.vim
+++ b/autoload/lsp/lsp.vim
@@ -809,6 +809,8 @@ export def InlayHints(ctl: string)
     inlayhints.InlayHintsEnable()
   elseif ctl == 'disable'
     inlayhints.InlayHintsDisable()
+  elseif ctl == 'toggle'
+    inlayhints.InlayHintsToggle()
   else
     util.ErrMsg($'LspInlayHints - Unsupported argument "{ctl}"')
   endif
@@ -816,7 +818,7 @@ enddef
 
 # Command-line completion for the ":LspInlayHints" command
 export def LspInlayHintsComplete(arglead: string, cmdline: string, cursorPos: number): list<string>
-  var l = ['enable', 'disable']
+  var l = ['enable', 'disable', 'toggle']
   return filter(l, (_, val) => val =~ $'^{arglead}')
 enddef
 
diff --git a/doc/lsp.txt b/doc/lsp.txt
index a40da7ad..a318be4b 100644
--- a/doc/lsp.txt
+++ b/doc/lsp.txt
@@ -117,7 +117,7 @@ The following commands are provided:
 			in a popup window.
 :LspIncomingCalls	Display the list of symbols calling the current symbol
 			in a window.
-:LspInlayHints		Enable or disable inlay hints.
+:LspInlayHints		Enable or disable or toggle inlay hints.
 :LspOutgoingCalls	Display the list of symbols called by the current
 			symbol in a window.
 :LspOutline		Show the list of symbols defined in the current file
@@ -937,11 +937,13 @@ can map these commands to keys and make it easier to invoke them.
 			not all the language servers support this feature.
 
 						*:LspInlayHints*
-:LspInlayHints		Enable or disable inlay hints.  Supports the "enable"
-			and "disable" arguments.  When "enable" is specified,
-			enables the inlay hints for all the buffers with a
-			language server that supports inlay hints.  When
-			"disable" is specified, disables the inlay hints.
+:LspInlayHints		Enable or disable inlay hints.  Supports the "enable",
+			"disable" and "toggle" arguments.  When "enable" is
+			specified, enables the inlay hints for all the buffers
+			with a language server that supports inlay hints.
+			When "disable" is specified, disables the inlay hints.
+			When "toggle" is specified, either enables or disables
+			the inlay hints.
 
 						*:LspOutoingCalls*
 :LspOutgoingCalls	Display a hierarchy of symbols called by the symbol