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poelzi@31
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1 --[[--
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jbe@46
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2 return_value = -- return value of executed chunk
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jbe@46
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3 execute.chunk{
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poelzi@31
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4 file_path = file_path, -- path to a lua source or byte-code file
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poelzi@31
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5 app = app, -- app name to use or the current will be used
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poelzi@31
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6 module = module, -- module where chunk is located
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jbe@46
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7 chunk = chunk -- name of chunk (filename without .lua extension)
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poelzi@32
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8 id = id, -- id to be returned by param.get_id(...) during execution
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poelzi@32
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9 params = params -- parameters to be returned by param.get(...) during execution
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poelzi@31
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10 }
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poelzi@31
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11
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jbe@205
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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.
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poelzi@31
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13
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poelzi@31
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14 --]]--
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poelzi@31
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15
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jbe@205
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16 local function pack_return_values(...)
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jbe@205
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17 local storage = {...}
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jbe@205
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18 storage.n = select("#", ...)
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jbe@205
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19 end
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jbe@205
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20
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jbe@205
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21 local function unpack_return_values(storage)
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jbe@205
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22 return table.unpack(storage, 1, storage.n)
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jbe@205
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23 end
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jbe@205
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24
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jbe@46
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25 function execute.chunk(args)
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poelzi@31
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26 local file_path = args.file_path
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poelzi@31
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27 local app = args.app
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poelzi@31
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28 local module = args.module
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poelzi@31
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29 local chunk = args.chunk
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poelzi@32
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30 local id = args.id
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poelzi@32
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31 local params = args.params
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poelzi@31
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32
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poelzi@31
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33 app = app or request.get_app_name()
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poelzi@31
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34
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jbe@46
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35 file_path = file_path or encode.file_path(
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jbe@46
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36 request.get_app_basepath(),
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jbe@46
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37 'app', app, module, chunk .. '.lua'
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jbe@46
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38 )
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poelzi@32
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39
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poelzi@31
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40 local func, load_errmsg = loadfile(file_path)
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poelzi@31
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41 if not func then
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poelzi@31
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42 error('Could not load file "' .. file_path .. '": ' .. load_errmsg)
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poelzi@31
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43 end
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poelzi@32
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44
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poelzi@32
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45 if id or params then
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poelzi@32
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46 param.exchange(id, params)
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poelzi@32
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47 end
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poelzi@32
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48
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jbe@205
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49 local result = pack_return_values(func())
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poelzi@32
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50
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poelzi@32
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51 if id or params then
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poelzi@32
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52 param.restore()
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poelzi@32
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53 end
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poelzi@32
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54
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jbe@205
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55 return unpack_return_values(result)
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poelzi@31
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56 end
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