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Any extensions that are not enabled by a used language (Haskell2010
&c) will be shown. Furthermore, any implicitly enabled are also going
to be shown. While we could eliminate this either by using the GHC API
or a dirty hack, I opted not to: if a user doesn't want the implied
flags to show, they are recommended to use enable extensions more
carefully or individually. Perhaps this will encourage users to not
enable the most powerful flags needlessly. Enabled with show-extensions.
Conflicts:
src/Haddock/InterfaceFile.hs
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LaTeX will treat the h3-h6 headings the same as we'd have to hack the
style file heavily otherwise and it would make the headings tiny
anyway.
Hoogle upstream said they will put in the functionality on their end.
Conflicts:
src/Haddock/Interface/Rename.hs
src/Haddock/Types.hs
test/Haddock/ParserSpec.hs
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Conflicts:
src/Haddock/Backends/Hoogle.hs
src/Haddock/Interface/Rename.hs
src/Haddock/Parser.hs
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We remove the HTML test as it is no longer necessary. We cover the
test case in spec tests and other HTML tests but keeping this around
fails: this is because the new parser has different semantics there.
In fact, I suspect the original behaviour was a bug that wasn't
caught/fixed but simply included as-is during the testing.
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I do the same thing that the XHTML backend does: give these no special
treatment and just act as if they are regular functions.
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Conflicts:
haddock.cabal
src/Haddock/Interface/AttachInstances.hs
src/Haddock/Interface/Create.hs
src/Haddock/Interface/LexParseRn.hs
src/Haddock/InterfaceFile.hs
src/Haddock/Types.hs
Only GHC HEAD can compile this. GHC 7.6.x cannot compile this.
Some test fail.
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Conflicts:
src/Haddock/InterfaceFile.hs
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An ordered, overlapping type family instance is introduced by 'type
instance
where', followed by equations. See the new section in the user manual
(7.7.2.2) for details. The canonical example is Boolean equality at the
type
level:
type family Equals (a :: k) (b :: k) :: Bool
type instance where
Equals a a = True
Equals a b = False
A branched family instance, such as this one, checks its equations in
order
and applies only the first the matches. As explained in the note
[Instance
checking within groups] in FamInstEnv.lhs, we must be careful not to
simplify,
say, (Equals Int b) to False, because b might later unify with Int.
This commit includes all of the commits on the overlapping-tyfams
branch. SPJ
requested that I combine all my commits over the past several months
into one
monolithic commit. The following GHC repos are affected: ghc, testsuite,
utils/haddock, libraries/template-haskell, and libraries/dph.
Here are some details for the interested:
- The definition of CoAxiom has been moved from TyCon.lhs to a
new file CoAxiom.lhs. I made this decision because of the
number of definitions necessary to support BranchList.
- BranchList is a GADT whose type tracks whether it is a
singleton list or not-necessarily-a-singleton-list. The reason
I introduced this type is to increase static checking of places
where GHC code assumes that a FamInst or CoAxiom is indeed a
singleton. This assumption takes place roughly 10 times
throughout the code. I was worried that a future change to GHC
would invalidate the assumption, and GHC might subtly fail to
do the right thing. By explicitly labeling CoAxioms and
FamInsts as being Unbranched (singleton) or
Branched (not-necessarily-singleton), we make this assumption
explicit and checkable. Furthermore, to enforce the accuracy of
this label, the list of branches of a CoAxiom or FamInst is
stored using a BranchList, whose constructors constrain its
type index appropriately.
I think that the decision to use BranchList is probably the most
controversial decision I made from a code design point of view.
Although I provide conversions to/from ordinary lists, it is more
efficient to use the brList... functions provided in CoAxiom than
always to convert. The use of these functions does not wander far
from the core CoAxiom/FamInst logic.
BranchLists are motivated and explained in the note [Branched axioms] in
CoAxiom.lhs.
- The CoAxiom type has changed significantly. You can see the new
type in CoAxiom.lhs. It uses a CoAxBranch type to track
branches of the CoAxiom. Correspondingly various functions
producing and consuming CoAxioms had to change, including the
binary layout of interface files.
- To get branched axioms to work correctly, it is important to have a
notion
of type "apartness": two types are apart if they cannot unify, and no
substitution of variables can ever get them to unify, even after type
family
simplification. (This is different than the normal failure to unify
because
of the type family bit.) This notion in encoded in tcApartTys, in
Unify.lhs.
Because apartness is finer-grained than unification, the tcUnifyTys
now
calls tcApartTys.
- CoreLinting axioms has been updated, both to reflect the new
form of CoAxiom and to enforce the apartness rules of branch
application. The formalization of the new rules is in
docs/core-spec/core-spec.pdf.
- The FamInst type (in types/FamInstEnv.lhs) has changed
significantly, paralleling the changes to CoAxiom. Of course,
this forced minor changes in many files.
- There are several new Notes in FamInstEnv.lhs, including one
discussing confluent overlap and why we're not doing it.
- lookupFamInstEnv, lookupFamInstEnvConflicts, and
lookup_fam_inst_env' (the function that actually does the work)
have all been more-or-less completely rewritten. There is a
Note [lookup_fam_inst_env' implementation] describing the
implementation. One of the changes that affects other files is
to change the type of matches from a pair of (FamInst, [Type])
to a new datatype (which now includes the index of the matching
branch). This seemed a better design.
- The TySynInstD constructor in Template Haskell was updated to
use the new datatype TySynEqn. I also bumped the TH version
number, requiring changes to DPH cabal files. (That's why the
DPH repo has an overlapping-tyfams branch.)
- As SPJ requested, I refactored some of the code in HsDecls:
* splitting up TyDecl into SynDecl and DataDecl, correspondingly
changing HsTyDefn to HsDataDefn (with only one constructor)
* splitting FamInstD into TyFamInstD and DataFamInstD and
splitting FamInstDecl into DataFamInstDecl and TyFamInstDecl
* making the ClsInstD take a ClsInstDecl, for parallelism with
InstDecl's other constructors
* changing constructor TyFamily into FamDecl
* creating a FamilyDecl type that stores the details for a family
declaration; this is useful because FamilyDecls can appear in classes
but
other decls cannot
* restricting the associated types and associated type defaults for a
* class
to be the new, more restrictive types
* splitting cid_fam_insts into cid_tyfam_insts and cid_datafam_insts,
according to the new types
* perhaps one or two more that I'm overlooking
None of these changes has far-reaching implications.
- The user manual, section 7.7.2.2, is updated to describe the new type
family
instances.
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The Xhtml backend has special markup for that, Hoogle and LaTeX reuse
what we have for DocEmphasis.
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(A bug that should have been fixed long ago.)
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renaming time.
Previously this was done in the backends.
Also, warn when a doc comment refers to something that is in scope but which we
don't have the .haddock file for.
These changes mean we can make DocIdentifier [a] into DocIdentifier a.
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This big patch implements a kind-polymorphic core for GHC. The current
implementation focuses on making sure that all kind-monomorphic programs still
work in the new core; it is not yet guaranteed that kind-polymorphic programs
(using the new -XPolyKinds flag) will work.
For more information, see http://haskell.org/haskellwiki/GHC/Kinds
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Conflicts:
src/Haddock/Convert.hs
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From 6fc71d067738ef4b7de159327bb6dc3d0596be29 Mon Sep 17 00:00:00 2001
From: Michal Terepeta <michal.terepeta@gmail.com>
Date: Sat, 14 May 2011 19:18:22 +0200
Subject: [PATCH] Follow the change of TypeSig in GHC.
This follows the change in GHC to make TypeSig take a list
of names (instead of just one); GHC ticket #1595. This
should also improve the Haddock output in case the user
writes a type signature that refers to many names:
-- | Some comment..
foo, bar :: ...
will now generate the expected output with one signature for
both names.
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darcs format (followed by a conflict resolution):
commit 6f92cdd12d1354dfbd80f8323ca333bea700896a
Merge: f420cc4 28df3a1
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date: Thu May 19 17:54:34 2011 +0100
Merge remote branch 'origin/master' into ghc-generics
commit 28df3a119f770fdfe85c687dd73d5f6712b8e7d0
Author: Max Bolingbroke <batterseapower@hotmail.com>
Date: Sat May 14 22:37:02 2011 +0100
Unicode fix for getExecDir on Windows
commit 89813e729be8bce26765b95419a171a7826f6d70
Merge: 6df3a04 797ab27
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date: Mon May 9 11:55:17 2011 +0100
Merge branch 'ghc-new-co'
commit 6df3a040da3dbddee67c6e30a892f87e6b164383
Author: Ian Lynagh <igloo@earth.li>
Date: Sun May 8 17:05:50 2011 +0100
Follow changes in SDoc
commit f420cc48b9259f0b1afd2438b12f9a2bde57053d
Author: Jose Pedro Magalhaes <jpm@cs.uu.nl>
Date: Wed May 4 17:31:52 2011 +0200
Adapt haddock to the removal of HsNumTy and TypePat.
commit 797ab27bdccf39c73ccad374fea265f124cb52ea
Merge: 1d81436 5a91450
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date: Mon May 2 12:05:03 2011 +0100
Merge remote branch 'origin/master' into ghc-new-co
commit 1d8143659a81cf9611668348e33fd0775c7ab1d2
Author: Simon Peyton Jones <simonpj@microsoft.com>
Date: Mon May 2 12:03:46 2011 +0100
Wibbles for ghc-new-co branch
commit 5a91450e2ea5a93c70bd3904b022445c9cc82488
Author: Ian Lynagh <igloo@earth.li>
Date: Fri Apr 22 00:51:56 2011 +0100
Follow defaultDynFlags change in GHC
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