feat(inlay-hints): add inlay hints toggle function

README.md

@@ -73,6 +73,7 @@ rt.setup({
   -- Commands:
   -- RustEnableInlayHints
   -- RustDisableInlayHints
+  -- RustToggleInlayHints
   -- RustSetInlayHints
   -- RustUnsetInlayHints
 
@@ -85,6 +86,8 @@ rt.setup({
   require('rust-tools').inlay_hints.enable()
   -- Disable inlay hints auto update and unset them for all buffers
   require('rust-tools').inlay_hints.disable()
+  -- Toggle between enabled and disabled inlay hints states for all buffer
+  require('rust-tools').inlay_hints.toggle()
   ```
 </details>
 

lua/rust-tools/init.lua

@@ -11,6 +11,7 @@ local M = {
   inlay_hints = {
     enable = nil,
     disable = nil,
+    toggle = nil,
     set = nil,
     unset = nil,
     cache = nil,
@@ -82,6 +83,9 @@ function M.setup(opts)
     render = function()
       inlay.render(hints)
     end,
+    toggle = function()
+      inlay.toggle(hints)
+    end,
   }
 
   local join_lines = require("rust-tools.join_lines")

lua/rust-tools/inlay_hints.lua

@@ -4,7 +4,7 @@ local M = {}
 
 function M.new()
   M.namespace = vim.api.nvim_create_namespace("textDocument/inlayHints")
-  local self = setmetatable({ cache = {}, enabled = false }, { __index = M })
+  local self = setmetatable({ cache = {} }, { __index = M })
 
   return self
 end
@@ -17,6 +17,7 @@ end
 -- Disable hints and clear all cached buffers
 function M.disable(self)
   self.disable = false
+  M.is_enabled = false
   M.disable_cache_autocmd()
 
   for k, _ in pairs(self.cache) do
@@ -34,11 +35,21 @@ end
 
 -- Enable auto hints and set hints for the current buffer
 function M.enable(self)
-  self.enabled = true
+  self.enable = false
+  M.is_enabled = true
   M.enable_cache_autocmd()
   set_all(self)
 end
 
+-- Toggles inlay hints state globally. Uses disable and enable internally
+function M.toggle(self)
+  if self.is_enabled then
+    M.disable(self)
+  else
+    M.enable(self)
+  end
+end
+
 -- Set inlay hints only for the current buffer
 function M.set(self)
   M.cache_render(self, 0)

lua/rust-tools/lsp.lua

@@ -52,6 +52,9 @@ local function setup_commands()
     RustDisableInlayHints = {
       rt.inlay_hints.disable,
     },
+    RustToggleInlayHints = {
+      rt.inlay_hints.toggle,
+    },
     RustLastDebug = {
       rt.cached_commands.execute_last_debuggable,
     },