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| author | Christiaan Baaij <christiaan.baaij@gmail.com> | 2021-11-15 18:09:09 +0100 |
|---|---|---|
| committer | Marge Bot <ben+marge-bot@smart-cactus.org> | 2022-03-25 11:35:49 -0400 |
| commit | 1d673aa25205084d3973a3e9c7b7cd84a8b3171c (patch) | |
| tree | 46091c83ce0c11d0f010e3a6096dbc3564de7127 /libraries | |
| parent | 5ff690b8474c74e9c968ef31e568c1ad0fe719a1 (diff) | |
| download | haskell-1d673aa25205084d3973a3e9c7b7cd84a8b3171c.tar.gz | |
Add the OPAQUE pragma
A new pragma, `OPAQUE`, that ensures that every call of a named
function annotated with an `OPAQUE` pragma remains a call of that
named function, not some name-mangled variant.
Implements GHC proposal 0415:
https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0415-opaque-pragma.rst
This commit also updates the haddock submodule to handle the newly
introduced lexer tokens corresponding to the OPAQUE pragma.
Diffstat (limited to 'libraries')
3 files changed, 6 insertions, 0 deletions
diff --git a/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs b/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs index 95ccf39447..e960f35bb3 100644 --- a/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs +++ b/libraries/template-haskell/Language/Haskell/TH/Lib/Internal.hs @@ -484,6 +484,9 @@ pragInlD :: Quote m => Name -> Inline -> RuleMatch -> Phases -> m Dec pragInlD name inline rm phases = pure $ PragmaD $ InlineP name inline rm phases +pragOpaqueD :: Quote m => Name -> m Dec +pragOpaqueD name = pure $ PragmaD $ OpaqueP name + pragSpecD :: Quote m => Name -> m Type -> Phases -> m Dec pragSpecD n ty phases = do diff --git a/libraries/template-haskell/Language/Haskell/TH/Ppr.hs b/libraries/template-haskell/Language/Haskell/TH/Ppr.hs index 449a6e5087..51e89fda2a 100644 --- a/libraries/template-haskell/Language/Haskell/TH/Ppr.hs +++ b/libraries/template-haskell/Language/Haskell/TH/Ppr.hs @@ -593,6 +593,8 @@ instance Ppr Pragma where <+> ppr phases <+> pprName' Applied n <+> text "#-}" + ppr (OpaqueP n) + = text "{-# OPAQUE" <+> pprName' Applied n <+> text "#-}" ppr (SpecialiseP n ty inline phases) = text "{-# SPECIALISE" <+> maybe empty ppr inline diff --git a/libraries/template-haskell/Language/Haskell/TH/Syntax.hs b/libraries/template-haskell/Language/Haskell/TH/Syntax.hs index 3d3f46d2c4..5acf96e011 100644 --- a/libraries/template-haskell/Language/Haskell/TH/Syntax.hs +++ b/libraries/template-haskell/Language/Haskell/TH/Syntax.hs @@ -2499,6 +2499,7 @@ data Safety = Unsafe | Safe | Interruptible deriving( Show, Eq, Ord, Data, Generic ) data Pragma = InlineP Name Inline RuleMatch Phases + | OpaqueP Name | SpecialiseP Name Type (Maybe Inline) Phases | SpecialiseInstP Type | RuleP String (Maybe [TyVarBndr ()]) [RuleBndr] Exp Exp Phases |