Merge pull request #251 from DanielG/dev-cabal1.16
Copy readMaybe/readEither from base for backwards compatibility
This commit is contained in:
Kazu Yamamoto
commit
d88dcde733
@ -1,3 +1,35 @@
|
||||
-- Copyright : Isaac Jones 2003-2004
|
||||
{- All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following
|
||||
disclaimer in the documentation and/or other materials provided
|
||||
with the distribution.
|
||||
|
||||
* Neither the name of Isaac Jones nor the names of other
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}
|
||||
|
||||
|
||||
-- | ComponentLocalBuildInfo for Cabal <= 1.16
|
||||
module Language.Haskell.GhcMod.Cabal16 (
|
||||
ComponentLocalBuildInfo
|
||||
|
||||
@ -1,7 +1,39 @@
|
||||
-- Copyright : Isaac Jones 2003-2004
|
||||
{- All rights reserved.
|
||||
|
||||
Redistribution and use in source and binary forms, with or without
|
||||
modification, are permitted provided that the following conditions are
|
||||
met:
|
||||
|
||||
* Redistributions of source code must retain the above copyright
|
||||
notice, this list of conditions and the following disclaimer.
|
||||
|
||||
* Redistributions in binary form must reproduce the above
|
||||
copyright notice, this list of conditions and the following
|
||||
disclaimer in the documentation and/or other materials provided
|
||||
with the distribution.
|
||||
|
||||
* Neither the name of Isaac Jones nor the names of other
|
||||
contributors may be used to endorse or promote products derived
|
||||
from this software without specific prior written permission.
|
||||
|
||||
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
||||
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
||||
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
||||
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
||||
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
||||
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||||
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||||
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||||
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
||||
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -}
|
||||
|
||||
-- | ComponentLocalBuildInfo for Cabal >= 1.18
|
||||
module Language.Haskell.GhcMod.Cabal18 (
|
||||
ComponentLocalBuildInfo
|
||||
, componentPackageDeps
|
||||
, componentLibraries
|
||||
) where
|
||||
|
||||
import Distribution.Package (InstalledPackageId, PackageId)
|
||||
|
||||
@ -6,6 +6,7 @@ module Language.Haskell.GhcMod.CabalConfig (
|
||||
|
||||
import Language.Haskell.GhcMod.GhcPkg
|
||||
import Language.Haskell.GhcMod.Utils
|
||||
import Language.Haskell.GhcMod.Read
|
||||
import Language.Haskell.GhcMod.Types
|
||||
|
||||
import qualified Language.Haskell.GhcMod.Cabal16 as C16
|
||||
@ -24,7 +25,6 @@ import Distribution.Simple.BuildPaths (defaultDistPref)
|
||||
import Distribution.Simple.Configure (localBuildInfoFile)
|
||||
import Distribution.Simple.LocalBuildInfo (ComponentName)
|
||||
import System.FilePath ((</>))
|
||||
import Text.Read (readMaybe)
|
||||
----------------------------------------------------------------
|
||||
|
||||
type CabalConfig = String
|
||||
@ -94,7 +94,7 @@ configDependencies thisPkg config = map fromInstalledPackageId deps
|
||||
clbi <- stripPrefix " = " field
|
||||
if "Nothing" `isPrefixOf` clbi
|
||||
then Nothing
|
||||
else case readMaybe <$> stripPrefix "Just " clbi of
|
||||
else case readMaybe =<< stripPrefix "Just " clbi of
|
||||
Just x -> x
|
||||
Nothing -> error $ "reading libraryConfig failed\n" ++ show (stripPrefix "Just " clbi)
|
||||
|
||||
@ -102,15 +102,9 @@ configDependencies thisPkg config = map fromInstalledPackageId deps
|
||||
extract field = readConfigs field <$> extractField config field
|
||||
|
||||
readConfigs :: String -> String -> [(String, C16.ComponentLocalBuildInfo)]
|
||||
readConfigs f s = case readMaybe s of
|
||||
Just x -> x
|
||||
Nothing -> error $ "reading config " ++ f ++ " failed"
|
||||
|
||||
|
||||
readEither :: Read r => String -> Either String r
|
||||
readEither s = case readMaybe s of
|
||||
Just x -> Right x
|
||||
Nothing -> Left $ "read: failed on input:\n" ++ s
|
||||
readConfigs f s = case readEither s of
|
||||
Right x -> x
|
||||
Left msg -> error $ "reading config " ++ f ++ " failed ("++msg++")"
|
||||
|
||||
extractField :: CabalConfig -> String -> Either String String
|
||||
extractField config field =
|
||||
|
||||
106
Language/Haskell/GhcMod/Read.hs
Normal file
106
Language/Haskell/GhcMod/Read.hs
Normal file
@ -0,0 +1,106 @@
|
||||
module Language.Haskell.GhcMod.Read where
|
||||
|
||||
import Text.Read (readPrec_to_S, readPrec, minPrec)
|
||||
import qualified Text.ParserCombinators.ReadP as P
|
||||
import Text.ParserCombinators.ReadPrec (lift)
|
||||
|
||||
-- This library (libraries/base) is derived from code from several
|
||||
-- sources:
|
||||
|
||||
-- * Code from the GHC project which is largely (c) The University of
|
||||
-- Glasgow, and distributable under a BSD-style license (see below),
|
||||
|
||||
-- * Code from the Haskell 98 Report which is (c) Simon Peyton Jones
|
||||
-- and freely redistributable (but see the full license for
|
||||
-- restrictions).
|
||||
|
||||
-- * Code from the Haskell Foreign Function Interface specification,
|
||||
-- which is (c) Manuel M. T. Chakravarty and freely redistributable
|
||||
-- (but see the full license for restrictions).
|
||||
|
||||
-- The full text of these licenses is reproduced below. All of the
|
||||
-- licenses are BSD-style or compatible.
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
|
||||
-- The Glasgow Haskell Compiler License
|
||||
|
||||
-- Copyright 2004, The University Court of the University of Glasgow.
|
||||
-- All rights reserved.
|
||||
|
||||
-- Redistribution and use in source and binary forms, with or without
|
||||
-- modification, are permitted provided that the following conditions are met:
|
||||
|
||||
-- - Redistributions of source code must retain the above copyright notice,
|
||||
-- this list of conditions and the following disclaimer.
|
||||
|
||||
-- - Redistributions in binary form must reproduce the above copyright notice,
|
||||
-- this list of conditions and the following disclaimer in the documentation
|
||||
-- and/or other materials provided with the distribution.
|
||||
|
||||
-- - Neither name of the University nor the names of its contributors may be
|
||||
-- used to endorse or promote products derived from this software without
|
||||
-- specific prior written permission.
|
||||
|
||||
-- THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY COURT OF THE UNIVERSITY OF
|
||||
-- GLASGOW AND THE CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
|
||||
-- INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
|
||||
-- FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
|
||||
-- UNIVERSITY COURT OF THE UNIVERSITY OF GLASGOW OR THE CONTRIBUTORS BE LIABLE
|
||||
-- FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
-- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
||||
-- SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
||||
-- CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
-- LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
-- OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
|
||||
-- DAMAGE.
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
|
||||
-- Code derived from the document "Report on the Programming Language
|
||||
-- Haskell 98", is distributed under the following license:
|
||||
|
||||
-- Copyright (c) 2002 Simon Peyton Jones
|
||||
|
||||
-- The authors intend this Report to belong to the entire Haskell
|
||||
-- community, and so we grant permission to copy and distribute it for
|
||||
-- any purpose, provided that it is reproduced in its entirety,
|
||||
-- including this Notice. Modified versions of this Report may also be
|
||||
-- copied and distributed for any purpose, provided that the modified
|
||||
-- version is clearly presented as such, and that it does not claim to
|
||||
-- be a definition of the Haskell 98 Language.
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
|
||||
-- Code derived from the document "The Haskell 98 Foreign Function
|
||||
-- Interface, An Addendum to the Haskell 98 Report" is distributed under
|
||||
-- the following license:
|
||||
|
||||
-- Copyright (c) 2002 Manuel M. T. Chakravarty
|
||||
|
||||
-- The authors intend this Report to belong to the entire Haskell
|
||||
-- community, and so we grant permission to copy and distribute it for
|
||||
-- any purpose, provided that it is reproduced in its entirety,
|
||||
-- including this Notice. Modified versions of this Report may also be
|
||||
-- copied and distributed for any purpose, provided that the modified
|
||||
-- version is clearly presented as such, and that it does not claim to
|
||||
-- be a definition of the Haskell 98 Foreign Function Interface.
|
||||
|
||||
-- -----------------------------------------------------------------------------
|
||||
|
||||
readEither :: Read a => String -> Either String a
|
||||
readEither s =
|
||||
case [ x | (x,"") <- readPrec_to_S read' minPrec s ] of
|
||||
[x] -> Right x
|
||||
[] -> Left "Prelude.read: no parse"
|
||||
_ -> Left "Prelude.read: ambiguous parse"
|
||||
where
|
||||
read' =
|
||||
do x <- readPrec
|
||||
lift P.skipSpaces
|
||||
return x
|
||||
|
||||
readMaybe :: Read a => String -> Maybe a
|
||||
readMaybe s = case readEither s of
|
||||
Left _ -> Nothing
|
||||
Right a -> Just a
|
||||
@ -79,6 +79,7 @@ Library
|
||||
Language.Haskell.GhcMod.PkgDoc
|
||||
Language.Haskell.GhcMod.Utils
|
||||
Language.Haskell.GhcMod.Types
|
||||
Language.Haskell.GhcMod.Read
|
||||
Build-Depends: base >= 4.0 && < 5
|
||||
, containers
|
||||
, deepseq
|
||||
|
||||
Loading…
Reference in New Issue
Block a user