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* TypoGabor Greif2013-02-151-1/+1
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* Refactoring instanceHead'.Kazu Yamamoto2013-02-061-1/+1
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* Using tcSplitSigmaTy in instanceHead' (FIXME is resolved.)Kazu Yamamoto2013-02-061-6/+5
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* Merge branch 'ghc-7.6' into ghc-7.6-merge-2Kazu Yamamoto2013-02-0114-105/+314
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
| * Properly handle deprecation messages for re-exported things (fixes #220)Simon Hengel2012-10-142-3/+9
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| * Minor formatting changeSimon Hengel2012-10-141-19/+19
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| * If parsing of deprecation message fails, include it verbatimSimon Hengel2012-10-141-9/+10
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| * Allow haddock markup in deprecation messagesSimon Hengel2012-10-143-22/+68
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| * Handle more cases in renameTypeSimon Hengel2012-10-141-14/+19
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| * Simplify lookupRnSimon Hengel2012-10-141-7/+7
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| * Simplify RnM typeSimon Hengel2012-10-141-10/+9
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| * Better error messagesSimon Hengel2012-10-131-2/+6
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| * Handle HsExplicitListTy in renameer (fixes #213)Simon Hengel2012-10-131-0/+2
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| * Improve note about `binaryInterfaceVersion` (thanks David)Simon Hengel2012-10-121-2/+3
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| * Remove redundant if-defs, more source documentationSimon Hengel2012-10-111-15/+16
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| * Allow to load interface files with compatible versionsSimon Hengel2012-10-091-1/+4
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| * Fix parser bugSimon Hengel2012-10-091-1/+3
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| * Bump interface versionSimon Hengel2012-10-091-5/+5
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| * Simplify lexing/parsing of propertiesSimon Hengel2012-10-092-13/+13
| | | | | | | | | | In contrast to what we do for examples, we do not really need to capture the "prompt" here.
| * Add markup support for propertiesKazu Yamamoto2012-10-0910-0/+29
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| * Fix spurious superclass constraints bug.David Waern2012-09-281-8/+23
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| * Follow changes in GHC.David Waern2012-09-071-0/+1
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| * Merge branch 'hiddenInstances2' of http://github.com/feuerbach/haddock into ↵David Waern2012-09-072-7/+55
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| | * Hide "internal" instancesRoman Cheplyaka2012-07-272-7/+55
| | | | | | | | | | | | | | | | | | | | | This fixes #37 (http://trac.haskell.org/haddock/ticket/37) Precisely, we show an instance iff its class and all the types are exported by non-hidden modules.
| * | Improve haddock memory usageIan Lynagh2012-08-134-51/+68
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| * | Merge branch 'dev' of https://github.com/sol/haddock into ghc-7.6David Waern2012-07-2311-21/+52
| |\ \ | | | | | | | | | | | | | | | | Conflicts: src/Haddock/InterfaceFile.hs
| | * | Add a type signature for a where-bindingSimon Hengel2012-05-271-0/+1
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| | * | Fix typo in commentSimon Hengel2012-05-271-1/+1
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| | * | Use LANGUAGE pragmas instead of default-extensions in cabal fileSimon Hengel2012-05-273-2/+3
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| | * | Add support for hyperlink labels to parserSimon Hengel2012-05-272-2/+11
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| | * | Add an optional label to URLsSimon Hengel2012-05-279-17/+37
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| * | | Update dependencies.Paolo Capriotti2012-07-201-0/+2
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* | | | Track change to HsBang typeSimon Peyton Jones2013-01-141-3/+3
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* | | | Use InstEnv.instanceSig rather than instanceHead (name change)Simon Peyton Jones2013-01-021-1/+1
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* | | | Merge branch 'master' of http://darcs.haskell.org//haddockSimon Peyton Jones2012-12-2310-165/+217
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| * | | | Implement overlapping type family instances.Richard Eisenberg2012-12-2110-165/+217
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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.
* | | | | Track changes in HsBangSimon Peyton Jones2012-12-231-1/+1
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* | | | Track changes in UNPACK pragma stuffSimon Peyton Jones2012-12-191-7/+13
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* | | | Follow changes in GHC: 'flags' has been renamed 'generalFlags'Ian Lynagh2012-10-182-3/+3
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* | | | Follow data type changes in the tc-untouchables branchSimon Peyton Jones2012-09-201-6/+3
| | | | | | | | | | | | | | | | Relating entirely to SynTyConRhs
* | | | Remove some temporary pragmas I accidentally recordedIan Lynagh2012-08-143-3/+0
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* | | | Improve haddock memory usageIan Lynagh2012-08-134-51/+68
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* | | | Follow changes in GHCIan Lynagh2012-08-071-1/+2
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* | | | Build with GHC 7.7Ian Lynagh2012-07-201-0/+4
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* | | | Merge branch 'master' of darcs.haskell.org:/srv/darcs//haddockIan Lynagh2012-07-1917-375/+513
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| * | | Forward port changes from stable.Paolo Capriotti2012-07-1917-375/+513
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| | * | Use a map for warnings, as suggested by @waernSimon Hengel2012-05-261-23/+20
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| | * | Add Applicative instance for (GenRnM a)Simon Hengel2012-05-261-2/+6
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| | * | Simplify lookupWarningSimon Hengel2012-05-171-6/+8
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| | * | Attach warnings to `Documentation` typeSimon Hengel2012-05-178-53/+56
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