TreeSitter for c-sharp in nvim

nix/base-system/flake.nix

@@ -27,7 +27,27 @@
       sile = sile-flake.defaultPackage.${system};
       jj = jj-flake.packages."${system}".jujutsu;
       age = agenix-flake.packages."${system}".default;
-    in { config, pkgs, ... }: {
+    in { config, pkgs, ... }: let
+		nvim-treesitter-csharp = pkgs.callPackage ./nvim-treesitter-csharp.nix {
+		    buildGrammar = pkgs.tree-sitter.buildGrammar;
+			fetchFromGitHub = pkgs.fetchFromGitHub;
+		};
+		expected-parsers = (pkgs.lib.attrVals [
+		  "tree-sitter-rust"
+          "tree-sitter-lua"
+          "tree-sitter-toml"
+          "tree-sitter-yaml"
+          "tree-sitter-json"
+          #"tree-sitter-ini"
+          "tree-sitter-html"
+          "tree-sitter-css"
+          "tree-sitter-nix"
+          "tree-sitter-latex"
+          "tree-sitter-ocaml"
+          "tree-sitter-tlaplus"
+          "tree-sitter-julia"
+        ] pkgs.tree-sitter.builtGrammars) ++ [nvim-treesitter-csharp]; 
+	in {
       
       imports = [
         agenix-flake.nixosModules.default
@@ -69,7 +89,9 @@ EOF";
                 vimspector
                 vimagit
                 hoon-vim
-                nvim-treesitter
+                (nvim-treesitter.withPlugins (_: expected-parsers))
+                nvim-treesitter-context
+				nvim-treesitter-parsers.ini
                 omnisharp-extended-lsp-nvim
                 #neotest-dotnet
                 nix-develop-nvim
@@ -80,21 +102,7 @@ EOF";
                 telescope-nvim
                 telescope-lsp-handlers-nvim
                 plenary-nvim
-              ] ++ (with nvim-treesitter-parsers; [
+              ];
-                rust
-                lua
-                toml
-                yaml
-                json
-                ini
-                html
-                css
-                nix
-                latex
-                ocaml
-                tlaplus
-                julia
-              ]);
             };
           };
 

nix/base-system/init.lua

@@ -6,7 +6,7 @@ vim.cmd.colorscheme 'duskfox'
 -- turn on relative line numbers
 vim.opt.relativenumber = true
 vim.opt.number = true
-vim.o.expandtab = false
+vim.o.expandtab = true
 vim.o.paste = false
 vim.o.autoindent = true
 vim.o.linebreak = true
@@ -62,8 +62,8 @@ lspconfig.nil_ls.setup{{
 local vim_pid = vim.fn.getpid()
 
 -- "FormatterOptions:EnableEditorConfigSupport=true" 
-local omnisharp_cmd = { tostring(vim.env.OMNISHARP_BIN), '--languageserver', '--hostPID',  tostring(vim_pid), }
+local omnisharp_cmd = { 'omnisharp', '--languageserver', '-v', '--hostPID',  tostring(vim_pid), }
--- This needs a path to the omnisharp dll provided. We depend on the OMNISHARP_BIN environment variable being set to make this work.
+
 lspconfig.omnisharp.setup {
     cmd = omnisharp_cmd,
     enable_roslyn_analyzers = true,
@@ -76,7 +76,6 @@ lspconfig.omnisharp.setup {
 	handlers = {
 		["textDocument/definition"] = require('omnisharp_extended').handler,
 	},
-	-- TODO(jwall): See if init_options can assist in getting our lint setting correct.
 }
 
 --ocaml
@@ -106,10 +105,17 @@ vim.api.nvim_create_autocmd('LspAttach', {
     vim.keymap.set("n", "gd", vim.lsp.buf.definition, opts)
     vim.keymap.set("n", "<Leader>f", vim.lsp.buf.format, opts)
     -- We use F2 to rename things
-    vim.keymap.set("n", "<F2>", vim.lsp.buf.rename, opts)
   end,
 })
 
+vim.api.nvim_create_autocmd({'LspAttach', 'BufEnter', 'InsertLeave', 'CursorHold'}, {
+    callback = function(ev)
+		if vim.lsp.buf.server_ready() then
+            vim.lsp.codelens.refresh()
+        end
+    end,
+})
+
 -- LSP Diagnostics Options Setup 
 local sign = function(opts)
   vim.fn.sign_define(opts.name, {
@@ -180,7 +186,46 @@ require('nvim-treesitter.configs').setup {
     enable = true,
     extended_mode = true,
     max_file_lines = nil,
-  }
+  },
+  textobjects = {
+    select = {
+      enable = true,
+      lookahead = true, -- Automatically jump forward to textobj, similar to targets.vim
+      keymaps = {
+        -- You can use the capture groups defined in textobjects.scm
+        ['aa'] = '@parameter.outer',
+        ['ia'] = '@parameter.inner',
+        ['af'] = '@function.outer',
+        ['if'] = '@function.inner',
+        ['ac'] = '@class.outer',
+        ['ic'] = '@class.inner',
+      },
+    },
+  },
+  --incremental_selection = {
+  --  enable = true,
+  --  keymaps = {
+  --    init_selection = '<Leader>c',
+  --    node_incremental = '<Leader>c',
+  --    scope_incremental = '<Leader>ci',
+  --    node_decremental = '<Leader>cx',
+  --  },
+  --},
+}
+
+require'treesitter-context'.setup {
+  enable = true, -- Enable this plugin (Can be enabled/disabled later via commands)
+  max_lines = 0, -- How many lines the window should span. Values <= 0 mean no limit.
+  min_window_height = 0, -- Minimum editor window height to enable context. Values <= 0 mean no limit.
+  line_numbers = true,
+  multiline_threshold = 20, -- Maximum number of lines to collapse for a single context line
+  trim_scope = 'outer', -- Which context lines to discard if `max_lines` is exceeded. Choices: 'inner', 'outer'
+  mode = 'cursor',  -- Line used to calculate context. Choices: 'cursor', 'topline'
+  -- Separator between context and content. Should be a single character string, like '-'.
+  -- When separator is set, the context will only show up when there are at least 2 lines above cursorline.
+  separator = nil,
+  zindex = 20, -- The Z-index of the context window
+  on_attach = nil, -- (fun(buf: integer): boolean) return false to disable attaching
 }
 
 vim.g.loaded_netrw = 1

nix/base-system/nvim-treesitter-csharp.nix

@@ -0,0 +1,11 @@
+{ buildGrammar, fetchFromGitHub, pkgs, }:
+buildGrammar {
+    language = "c-sharp";
+    version = "0.20.0-master";
+    src = fetchFromGitHub {
+        owner = "tree-sitter";
+        repo = "tree-sitter-c-sharp";
+        rev = "1648e21b4f087963abf0101ee5221bb413107b07";
+        hash = "sha256-WvkHtw8t14UNqiJvmS9dbGYQSVVzHS9mcWzxq+KLMnU=";#pkgs.lib.fakeHash;
+    };
+}

nix/darwin/flake.lock

@@ -34,12 +34,12 @@
       },
       "locked": {
         "lastModified": 1,
-        "narHash": "sha256-RUsYDEHzM9vCyjCifvicGOS/Bnj/vFPFz7WVdjId6U0=",
+        "narHash": "sha256-LdDXr6idLkkTeHwlq0ZA7kri4HMr124xABHowvooD/c=",
-        "path": "/nix/store/zpffamlg727zid5pkx7vs1ca7q07vkgk-source/nix/base-system",
+        "path": "/nix/store/hhwybysgssx8f4ivff8yhagm6iyqgis9-source/nix/base-system",
         "type": "path"
       },
       "original": {
-        "path": "/nix/store/zpffamlg727zid5pkx7vs1ca7q07vkgk-source/nix/base-system",
+        "path": "/nix/store/hhwybysgssx8f4ivff8yhagm6iyqgis9-source/nix/base-system",
         "type": "path"
       }
     },