Avoid accessing member func with subscript

It's difficult to translate into other language (e.g. Go)

Author: haya14busa

autoload/vimlparser.vim

@@ -797,7 +797,103 @@ function! s:VimLParser.parse_command()
     call self.parse_argcmd()
   endif
 
-  call self[self.ea.cmd.parser]()
+  call self._parse_command(self.ea.cmd.parser)
+endfunction
+
+function! s:VimLParser._parse_command(parser) abort
+  if a:parser == 'parse_cmd_append'
+    call self.parse_cmd_append()
+  elseif a:parser == 'parse_cmd_break'
+    call self.parse_cmd_break()
+  elseif a:parser == 'parse_cmd_call'
+    call self.parse_cmd_call()
+  elseif a:parser == 'parse_cmd_catch'
+    call self.parse_cmd_catch()
+  elseif a:parser == 'parse_cmd_common'
+    call self.parse_cmd_common()
+  elseif a:parser == 'parse_cmd_continue'
+    call self.parse_cmd_continue()
+  elseif a:parser == 'parse_cmd_delfunction'
+    call self.parse_cmd_delfunction()
+  elseif a:parser == 'parse_cmd_echo'
+    call self.parse_cmd_echo()
+  elseif a:parser == 'parse_cmd_echoerr'
+    call self.parse_cmd_echoerr()
+  elseif a:parser == 'parse_cmd_echohl'
+    call self.parse_cmd_echohl()
+  elseif a:parser == 'parse_cmd_echomsg'
+    call self.parse_cmd_echomsg()
+  elseif a:parser == 'parse_cmd_echon'
+    call self.parse_cmd_echon()
+  elseif a:parser == 'parse_cmd_else'
+    call self.parse_cmd_else()
+  elseif a:parser == 'parse_cmd_elseif'
+    call self.parse_cmd_elseif()
+  elseif a:parser == 'parse_cmd_endfor'
+    call self.parse_cmd_endfor()
+  elseif a:parser == 'parse_cmd_endfunction'
+    call self.parse_cmd_endfunction()
+  elseif a:parser == 'parse_cmd_endif'
+    call self.parse_cmd_endif()
+  elseif a:parser == 'parse_cmd_endtry'
+    call self.parse_cmd_endtry()
+  elseif a:parser == 'parse_cmd_endwhile'
+    call self.parse_cmd_endwhile()
+  elseif a:parser == 'parse_cmd_execute'
+    call self.parse_cmd_execute()
+  elseif a:parser == 'parse_cmd_finally'
+    call self.parse_cmd_finally()
+  elseif a:parser == 'parse_cmd_finish'
+    call self.parse_cmd_finish()
+  elseif a:parser == 'parse_cmd_for'
+    call self.parse_cmd_for()
+  elseif a:parser == 'parse_cmd_function'
+    call self.parse_cmd_function()
+  elseif a:parser == 'parse_cmd_if'
+    call self.parse_cmd_if()
+  elseif a:parser == 'parse_cmd_insert'
+    call self.parse_cmd_insert()
+  elseif a:parser == 'parse_cmd_let'
+    call self.parse_cmd_let()
+  elseif a:parser == 'parse_cmd_loadkeymap'
+    call self.parse_cmd_loadkeymap()
+  elseif a:parser == 'parse_cmd_lockvar'
+    call self.parse_cmd_lockvar()
+  elseif a:parser == 'parse_cmd_lua'
+    call self.parse_cmd_lua()
+  elseif a:parser == 'parse_cmd_modifier_range'
+    call self.parse_cmd_modifier_range()
+  elseif a:parser == 'parse_cmd_mzscheme'
+    call self.parse_cmd_mzscheme()
+  elseif a:parser == 'parse_cmd_perl'
+    call self.parse_cmd_perl()
+  elseif a:parser == 'parse_cmd_python'
+    call self.parse_cmd_python()
+  elseif a:parser == 'parse_cmd_python3'
+    call self.parse_cmd_python3()
+  elseif a:parser == 'parse_cmd_return'
+    call self.parse_cmd_return()
+  elseif a:parser == 'parse_cmd_ruby'
+    call self.parse_cmd_ruby()
+  elseif a:parser == 'parse_cmd_tcl'
+    call self.parse_cmd_tcl()
+  elseif a:parser == 'parse_cmd_throw'
+    call self.parse_cmd_throw()
+  elseif a:parser == 'parse_cmd_try'
+    call self.parse_cmd_try()
+  elseif a:parser == 'parse_cmd_unlet'
+    call self.parse_cmd_unlet()
+  elseif a:parser == 'parse_cmd_unlockvar'
+    call self.parse_cmd_unlockvar()
+  elseif a:parser == 'parse_cmd_usercmd'
+    call self.parse_cmd_usercmd()
+  elseif a:parser == 'parse_cmd_while'
+    call self.parse_cmd_while()
+  elseif a:parser == 'parse_wincmd'
+    call self.parse_wincmd()
+  elseif a:parser == 'parse_cmd_syntax'
+    call self.parse_cmd_syntax()
+  endif
 endfunction
 
 function! s:VimLParser.find_command()