tree-sitter: initial tree-sitter support

runtime/plugin/ts_test.vim

@@ -0,0 +1,32 @@
+let g:ts_test_path = expand("<sfile>:p:h:h")
+let g:has_ts = v:false
+
+func! TSTest()
+  if g:has_ts
+    return
+  end
+  " TODO: module!
+  lua require'treesitter_rt'
+  lua theparser = create_parser(vim.api.nvim_get_current_buf())
+  let g:has_ts = v:true
+endfunc
+
+func! TSCursor()
+  " disable matchparen
+  NoMatchParen
+  call TSTest()
+  au CursorMoved <buffer> lua ts_cursor()
+  au CursorMovedI <buffer> lua ts_cursor()
+  map <buffer> <Plug>(ts-expand) <cmd>lua ts_expand_node()<cr>
+endfunc
+
+func! TSSyntax()
+  " disable matchparen
+  set syntax=
+  call TSTest()
+  lua ts_syntax()
+endfunc
+
+command! TSTest call TSTest()
+command! TSCursor call TSCursor()
+command! TSSyntax call TSSyntax()