1 --[[--

2 return_value = -- return value of executed chunk

3 execute.chunk{

4 file_path = file_path, -- path to a lua source or byte-code file

5 app = app, -- app name to use or the current will be used

6 module = module, -- module where chunk is located

7 chunk = chunk -- name of chunk (filename without .lua extension)

8 id = id, -- id to be returned by param.get_id(...) during execution

9 params = params -- parameters to be returned by param.get(...) during execution

10 }

11

12 This function loads and executes a lua file specified by a given path or constructs a path to load from the module and chunk name. A chunk name should always begin with an underscore. All return values of the loaded and executed chunk are returned by this function as well.

13

14 --]]--

15

16 local function pack_return_values(...)

17 local storage = {...}

18 storage.n = select("#", ...)

19 return storage

20 end

21

22 local function unpack_return_values(storage)

23 return table.unpack(storage, 1, storage.n)

24 end

25

26 function execute.chunk(args)

27 local file_path = args.file_path

28 local app = args.app or WEBMCP_APP_NAME

29 local module = args.module

30 local chunk = args.chunk

31 local id = args.id

32 local params = args.params

33

34 file_path = file_path or encode.file_path(

35 WEBMCP_BASE_PATH, 'app', app, module, chunk .. '.lua'

36 )

37

38 local func, load_errmsg = loadfile(file_path, nil, _ENV)

39 if not func then

40 error('Could not load file "' .. file_path .. '": ' .. load_errmsg)

41 end

42

43 if id or params then

44 param.exchange(id, params)

45 end

46

47 local result = pack_return_values(func())

48

49 if id or params then

50 param.restore()

51 end

52

53 return unpack_return_values(result)

54 end