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definition:
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tryReadACYFile :: String -> IO (Maybe CurryProg)
tryReadACYFile fn = do
exists <- doesFileExist fn
if exists
then tryRead fn
else do
let fn' = inCurrySubdir fn
exists' <- doesFileExist fn'
if exists'
then tryRead fn'
else return Nothing
where
tryRead file = do
src <- readFile file
let (line1,lines) = break (=='\n') src
if line1 /= "{- "++version++" -}"
then error $ "AbstractCurry: incompatible file found: "++fn
else return $ readACYString lines
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demand:
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no demanded arguments
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deterministic:
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deterministic operation
|
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documentation:
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--- Tries to read an AbstractCurry file and returns
---
--- * Left err , where err specifies the error occurred
--- * Right prog, where prog is the AbstractCurry program
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failfree:
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<FAILING>
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indeterministic:
|
referentially transparent operation
|
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infix:
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no fixity defined
|
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iotype:
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{(_) |-> _}
|
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name:
|
tryReadACYFile
|
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precedence:
|
no precedence defined
|
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result-values:
|
_
|
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signature:
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String -> Prelude.IO (Prelude.Maybe AbstractCurry.Types.CurryProg)
|
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solution-complete:
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operation might suspend on free variables
|
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terminating:
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possibly non-terminating
|
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totally-defined:
|
possibly non-reducible on same data term
|