Sufficiently many externally visible changes to warrant
a GHC blog post (motivation, changes, use), linked from
wiki pages on the GHC API?
Actually, having an "API" tag in the GHC blog, and the wiki
pages linking to that tag, might also alleviate the issues of
eternally-out-of-date GHC API tutorials, by explaining
changes when they happen, but recording them for later
reading.
Claus
--------------------------------------------------
From: "Simon Marlow" <[email protected]>
Sent: Wednesday, October 27, 2010 8:56 PM
To: <[email protected]>
Subject: patch applied (ghc): Refactoring and tidyup of HscMain and
relatedthings (also fix #1666)
Wed Oct 27 05:11:32 PDT 2010 Simon Marlow <[email protected]>
* Refactoring and tidyup of HscMain and related things (also fix #1666)
While trying to fix #1666 (-Werror aborts too early) I decided to some
tidyup in GHC/DriverPipeline/HscMain.
- The GhcMonad overloading is gone from DriverPipeline and HscMain
now. GhcMonad is now defined in a module of its own, and only
used in the top-level GHC layer. DriverPipeline and HscMain
use the plain IO monad and take HscEnv as an argument.
- WarnLogMonad is gone. printExceptionAndWarnings is now called
printException (the old name is deprecated). Session no longer
contains warnings.
- HscMain has its own little monad that collects warnings, and also
plumbs HscEnv around. The idea here is that warnings are collected
while we're in HscMain, but on exit from HscMain (any function) we
check for warnings and either print them (via log_action, so IDEs
can still override the printing), or turn them into an error if
-Werror is on.
- GhcApiCallbacks is gone, along with GHC.loadWithLogger. Thomas
Schilling told me he wasn't using these, and I don't see a good
reason to have them.
- there's a new pure API to the parser (suggestion from Neil Mitchell):
parser :: String
-> DynFlags
-> FilePath
-> Either ErrorMessages (WarningMessages,
Located (HsModule RdrName))
M ./compiler/basicTypes/SrcLoc.lhs -2 +2
M ./compiler/ghc.cabal.in +1
M ./compiler/ghci/Debugger.hs -4 +1
M ./compiler/main/DriverMkDepend.hs +1
M ./compiler/main/DriverPipeline.hs -116 +105
M ./compiler/main/ErrUtils.lhs -40 +12
M ./compiler/main/GHC.hs -215 +172
A ./compiler/main/GhcMonad.hs
M ./compiler/main/HeaderInfo.hs -7 +6
M ./compiler/main/HscMain.lhs -305 +517
M ./compiler/main/HscTypes.lhs -298 +28
M ./compiler/main/InteractiveEval.hs -25 +16
M ./compiler/rename/RnNames.lhs -1 +13
M ./compiler/simplCore/CoreMonad.lhs +1
M ./compiler/typecheck/TcRnMonad.lhs -3 +2
M ./compiler/typecheck/TcSplice.lhs -1 +1
M ./compiler/utils/MonadUtils.hs -12 +12
M ./compiler/utils/StringBuffer.lhs -2 +3
M ./compiler/vectorise/Vectorise.hs +2
M ./compiler/vectorise/Vectorise/Monad.hs +1
M ./ghc/GhciMonad.hs -13 +3
M ./ghc/InteractiveUI.hs -12 +11
M ./ghc/Main.hs -16 +12
View patch online:
http://darcs.haskell.org/cgi-bin/darcsweb.cgi?r=ghc;a=darcs_commitdiff;h=20101027121132-12142-a96f7598509a1990a2885acaec3959dacfab3302.gz
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