annotate framework/env/convert/from_human.lua @ 435:f704f35923e2
Added a (currently unused) pure Lua version of extos.pfilter(...)
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jbe |
| date |
Sat Jan 16 04:44:16 2016 +0100 (2016-01-16) |
| parents |
9fdfb27f8e67 |
| children |
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| rev |
line source |
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1 function convert.from_human(str, typ)
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2 if not typ then
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3 error("Using convert.from_human(...) to convert a human readable string to an internal data type needs a type to be specified as second parameter.")
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4 end
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5 if not str then return nil end -- TODO: decide, if an error should be raised instead
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6 local type_symbol = convert._type_symbol_mappings[typ]
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7 if not type_symbol then
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8 error("Unrecognized type reference passed to convert.from_human(...).")
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9 end
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10 local converter = convert["_from_human_to_" .. type_symbol]
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11 if not converter then
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12 error("Type reference passed to convert.from_human(...) was recognized, but the converter function is not existent.")
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13 end
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14 return converter(str)
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15 end |