add treesitter with color customization

lua/lang.lua

@@ -61,6 +61,26 @@ local on_attach = function(client, bufnr)
     end
 end
 
+require('nvim-treesitter.configs').setup {
+  ensure_installed = { "lua", "rust", "elm", "python", "toml" },
+  auto_install = true,
+  highlight = {
+    enable = true,
+    additional_vim_regex_highlighting=false,
+  },
+  ident = {
+      enable = true,
+  },
+  rainbow = {
+    enable = true,
+    extended_mode = false,
+    max_file_lines = nil,
+  }
+}
+vim.api.nvim_set_hl(0, "@variable", { })
+vim.api.nvim_set_hl(0, "@parameter", { })
+
+
 local nvim_lsp = require('lspconfig')
 local capabilities = vim.lsp.protocol.make_client_capabilities()
 

lua/plugins.lua

@@ -9,6 +9,8 @@ return require('packer').startup(function()
       requires = {{'nvim-lua/popup.nvim'}, {'nvim-lua/plenary.nvim'}}
   }
 
+  use 'nvim-treesitter/nvim-treesitter'
+
   use {
     'nvim-tree/nvim-tree.lua',
     requires = 'nvim-tree/nvim-web-devicons',