%
-% (c) The AQUA Project, Glasgow University, 1993-2000
+% (c) The University of Glasgow, 2000
%
\section[CmSummarise]{Module summariser for GHCI}
\begin{code}
module CmSummarise ( ModImport(..), mi_name,
- ModSummary(..), summarise, ms_get_imports )
+ ModSummary(..), summarise, ms_get_imports,
+ name_of_summary, deps_of_summary,
+ getImports )
where
#include "HsVersions.h"
import List ( nub )
import Char ( ord, isAlphaNum )
+import Finder
+import FastTypes
-import CmFind ( ModName, ModLocation(..) )
-import Outputable ( pprPanic, text )
+import Module
+import Outputable
\end{code}
\begin{code}
+-- The Module contains the original source filename of the module.
+-- The ms_ppsource field contains another filename, which is intended to
+-- be the cleaned-up source file after all preprocessing has happened to
+-- it. The point is that the summariser will have to cpp/unlit/whatever
+-- all files anyway, and there's no point in doing this twice -- just
+-- park the result in a temp file, put the name of it in ms_ppsource,
+-- and let @compile@ read from that file on the way back up.
data ModSummary
= ModSummary {
- ms_loc :: ModLocation, -- location and kind
- ms_source :: (Maybe (String, Fingerprint)), -- source and sig if .hs
- ms_imports :: (Maybe [ModImport]) -- imports if .hs or .hi
+ ms_mod :: Module, -- name, package
+ ms_location :: ModuleLocation, -- location
+ ms_ppsource :: (Maybe (FilePath, Fingerprint)), -- preprocessed and sig if .hs
+ ms_imports :: (Maybe [ModImport]) -- imports if .hs or .hi
}
- deriving Show
+
+instance Outputable ModSummary where
+ ppr ms
+ = sep [text "ModSummary {",
+ nest 3 (sep [text "ms_mod =" <+> ppr (ms_mod ms),
+ text "ms_ppsource =" <+> fooble (ms_ppsource ms),
+ text "ms_imports=" <+> ppr (ms_imports ms)]),
+ char '}'
+ ]
+ where
+ fooble Nothing = text "Nothing"
+ fooble (Just (cppd_source_name,fp))
+ = text "(fp =" <+> int fp <> text ","
+ <+> text (show cppd_source_name) <> text ")"
data ModImport
- = MINormal ModName | MISource ModName
- deriving (Eq, Show)
+ = MINormal ModuleName | MISource ModuleName
+ deriving Eq
+
+instance Outputable ModImport where
+ ppr (MINormal nm) = ppr nm
+ ppr (MISource nm) = text "{-# SOURCE #-}" <+> ppr nm
+
mi_name (MINormal nm) = nm
mi_name (MISource nm) = nm
+name_of_summary :: ModSummary -> ModuleName
+name_of_summary = moduleName . ms_mod
+
+deps_of_summary :: ModSummary -> [ModuleName]
+deps_of_summary = map mi_name . ms_get_imports
+
ms_get_imports :: ModSummary -> [ModImport]
ms_get_imports summ
= case ms_imports summ of { Just is -> is; Nothing -> [] }
type Fingerprint = Int
-summarise :: ModLocation -> IO ModSummary
-
-summarise loc
- = case loc of
- InPackage mod path -- if in a package, investigate no further
- -> return (ModSummary loc Nothing Nothing)
- SourceOnly mod path -- source; read, cache and get imports
- -> readFile path >>= \ modsrc ->
- let imps = getImports modsrc
- fp = fingerprint modsrc
- in return (ModSummary loc (Just (modsrc,fp)) (Just imps))
- ObjectCode mod oPath hiPath -- can we get away with the src summariser
- -- for interface files?
- -> readFile hiPath >>= \ hisrc ->
- let imps = getImports hisrc
- in return (ModSummary loc Nothing (Just imps))
- NotFound
- -> pprPanic "summarise:NotFound" (text (show loc))
-
+summarise :: Module -> ModuleLocation -> IO ModSummary
+summarise mod location
+ = if isModuleInThisPackage mod
+ then do
+ let source_fn = hs_file location
+ -- ToDo:
+ -- ppsource_fn <- preprocess source_fn
+ modsrc <- readFile source_fn
+ let imps = getImports modsrc
+ fp = fingerprint modsrc
+ return (ModSummary mod location (Just (source_fn,fp)) (Just imps))
+ else
+ return (ModSummary mod location Nothing Nothing)
+
fingerprint :: String -> Int
fingerprint s
- = dofp s 3 3
+ = dofp s (_ILIT 3) (_ILIT 3)
where
-- Copied from hash() in Hugs' storage.c.
- dofp :: String -> Int -> Int -> Int
- dofp [] m fp = fp
- dofp (c:cs) m fp = dofp cs (m+1) (iabs (fp + m * ord c))
- iabs :: Int -> Int
- iabs n = if n < 0 then -n else n
+ dofp :: String -> FastInt -> FastInt -> Int
+ dofp [] m fp = iBox fp
+ dofp (c:cs) m fp = dofp cs (m +# _ILIT 1)
+ (iabs (fp +# m *# iUnbox (ord c)))
+
+ iabs :: FastInt -> FastInt
+ iabs n = if n <# _ILIT 0 then (_ILIT 0) -# n else n
\end{code}
Collect up the imports from a Haskell source module. This is
where
f ("foreign" : "import" : ws) = f ws
f ("import" : "{-#" : "SOURCE" : "#-}" : "qualified" : m : ws)
- = MISource (takeWhile isModId m) : f ws
+ = MISource (mkMN m) : f ws
f ("import" : "{-#" : "SOURCE" : "#-}" : m : ws)
- = MISource (takeWhile isModId m) : f ws
+ = MISource (mkMN m) : f ws
f ("import" : "qualified" : m : ws)
- = MINormal (takeWhile isModId m) : f ws
+ = MINormal (mkMN m) : f ws
f ("import" : m : ws)
- = MINormal (takeWhile isModId m) : f ws
+ = MINormal (mkMN m) : f ws
f (w:ws) = f ws
f [] = []
-isModId c = isAlphaNum c || c `elem` "'_"
+ mkMN str = mkModuleName (takeWhile isModId str)
+ isModId c = isAlphaNum c || c `elem` "'_"
-- remove literals and comments from a string
clean :: String -> String
runcomment [] = []
runcomment ('-':'}':cs) = keep cs
runcomment (c:cs) = runcomment cs
-\end{code}
\ No newline at end of file
+\end{code}
projects / ghc-hetmet.git / blobdiff