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This patch removes the ping-pong style from HsPat (only, for now),
using the plan laid out at
https://ghc.haskell.org/trac/ghc/wiki/ImplementingTreesThatGrow/HandlingSourceLocations (solution
A).
- the class `HasSrcSpan`, and its functions (e.g., `cL` and `dL`), are introduced
- some instances of `HasSrcSpan` are introduced
- some constructors `L` are replaced with `cL`
- some patterns `L` are replaced with `dL->L` view pattern
- some type annotation are necessarily updated (e.g., `Pat p` --> `Pat (GhcPass p)`)
Phab diff: D5036
Trac Issues #15495
Updates haddock submodule
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The following commits were reverted prior to the release of GHC 8.4.1,
because the time to derive Data instances was too long [1].
438dd1cbba13d35f3452b4dcef3f94ce9a216905 Phab:D4147
e3ec2e7ae94524ebd111963faf34b84d942265b4 Phab:D4177
47ad6578ea460999b53eb4293c3a3b3017a56d65 Phab:D4186
The work is continuing, as the minimum bootstrap compiler is now
GHC 8.2.1, and this allows Plan B[2] for instances to be used. This
will land in a following commit.
Updates Haddock submodule
[1] https://ghc.haskell.org/trac/ghc/wiki/ImplementingTreesThatGrow/Instances
[2] https://ghc.haskell.org/trac/ghc/wiki/ImplementingTreesThatGrow/Instances#PLANB
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As documented in #14490, the Data instances currently blow up
compilation time by too much to stomach. Alan will continue working on
this in a branch and we will perhaps merge to 8.2 before 8.2.1 to avoid
having to perform painful cherry-picks in 8.2 minor releases.
Reverts haddock submodule.
This reverts commit 47ad6578ea460999b53eb4293c3a3b3017a56d65.
This reverts commit e3ec2e7ae94524ebd111963faf34b84d942265b4.
This reverts commit 438dd1cbba13d35f3452b4dcef3f94ce9a216905.
This reverts commit 0ff152c9e633accca48815e26e59d1af1fe44ceb.
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See https://ghc.haskell.org/trac/ghc/wiki/ImplementingTreesThatGrow
Trees that grow extension points are added for
- ValBinds
- HsPat
- HsLit
- HsOverLit
- HsType
- HsTyVarBndr
- HsAppType
- FieldOcc
- AmbiguousFieldOcc
Updates haddock submodule
Test Plan: ./validate
Reviewers: shayan-najd, simonpj, austin, goldfire, bgamari
Subscribers: goldfire, rwbarton, thomie, mpickering
Differential Revision: https://phabricator.haskell.org/D4147
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This reverts commit 0ff152c9e633accca48815e26e59d1af1fe44ceb.
Sadly this broke when bootstrapping with 8.0.2 due to #14396.
Reverts haddock submodule.
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See https://ghc.haskell.org/trac/ghc/wiki/ImplementingTreesThatGrow
Trees that grow extension points are added for
- ValBinds
- HsPat
- HsLit
- HsOverLit
- HsType
- HsTyVarBndr
- HsAppType
- FieldOcc
- AmbiguousFieldOcc
Updates haddock submodule
Test Plan: ./validate
Reviewers: shayan-najd, simonpj, austin, goldfire, bgamari
Subscribers: goldfire, rwbarton, thomie, mpickering
Differential Revision: https://phabricator.haskell.org/D4147
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This switches the compiler/ component to get compiled with
-XNoImplicitPrelude and a `import GhcPrelude` is inserted in all
modules.
This is motivated by the upcoming "Prelude" re-export of
`Semigroup((<>))` which would cause lots of name clashes in every
modulewhich imports also `Outputable`
Reviewers: austin, goldfire, bgamari, alanz, simonmar
Reviewed By: bgamari
Subscribers: goldfire, rwbarton, thomie, mpickering, bgamari
Differential Revision: https://phabricator.haskell.org/D3989
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Summary:
See https://ghc.haskell.org/trac/ghc/wiki/ImplementingTreesThatGrow
This commit prepares the ground for a full extensible AST, by replacing the type
parameter for the hsSyn data types with a set of indices into type families,
data GhcPs -- ^ Index for GHC parser output
data GhcRn -- ^ Index for GHC renamer output
data GhcTc -- ^ Index for GHC typechecker output
These are now used instead of `RdrName`, `Name` and `Id`/`TcId`/`Var`
Where the original name type is required in a polymorphic context, this is
accessible via the IdP type family, defined as
type family IdP p
type instance IdP GhcPs = RdrName
type instance IdP GhcRn = Name
type instance IdP GhcTc = Id
These types are declared in the new 'hsSyn/HsExtension.hs' module.
To gain a better understanding of the extension mechanism, it has been applied
to `HsLit` only, also replacing the `SourceText` fields in them with extension
types.
To preserve extension generality, a type class is introduced to capture the
`SourceText` interface, which must be honoured by all of the extension points
which originally had a `SourceText`. The class is defined as
class HasSourceText a where
-- Provide setters to mimic existing constructors
noSourceText :: a
sourceText :: String -> a
setSourceText :: SourceText -> a
getSourceText :: a -> SourceText
And the constraint is captured in `SourceTextX`, which is a constraint type
listing all the extension points that make use of the class.
Updating Haddock submodule to match.
Test Plan: ./validate
Reviewers: simonpj, shayan-najd, goldfire, austin, bgamari
Subscribers: rwbarton, thomie, mpickering
Differential Revision: https://phabricator.haskell.org/D3609
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Summary:
RnEnv contains functions which convertn RdrNames into Names.
RnUnbound contains helper functions for reporting and creating
unbound variables.
RnFixity contains code which maintains the fixity environent
whilst renaming.
RnUtils contains the other stuff in RnEnv.
Reviewers: austin, goldfire, bgamari
Subscribers: goldfire, rwbarton, thomie, snowleopard
Differential Revision: https://phabricator.haskell.org/D3436
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