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Made the preprocessor correct the path a #USEd file when it finds it on the search path while including it

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This commit is contained in:
Neil Brown 2009-04-01 18:59:57 +00:00
parent 91092c17ff
commit 5bf1ffa785
1 changed files with 9 additions and 1 deletions
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10
frontends/PreprocessOccam.hs
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@ -65,11 +65,19 @@ preprocessFile m filename
= do (handle, realFilename) <- searchFile m filename
progress $ "Loading source file " ++ realFilename
origCS <- get
modify (\cs -> cs { csCurrentFile = realFilename })
let modFunc = if drop4 filename `Set.member` csUsedFiles origCS
then Set.insert (drop4 realFilename)
. Set.delete (drop4 filename)
else id
modify (\cs -> cs { csCurrentFile = realFilename
, csUsedFiles = modFunc $ csUsedFiles cs })
s <- liftIO $ hGetContents handle
toks <- preprocessSource m realFilename s
modify (\cs -> cs { csCurrentFile = csCurrentFile origCS })
return toks
where
-- drops 4 from the end:
drop4 = reverse . drop 4 . reverse
-- | Preprocesses source directly and returns its tokenised form ready for parsing.
preprocessSource :: Meta -> String -> String -> PassM [Token]