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author | Thomas Schilling <nominolo@googlemail.com> | 2008-09-14 20:56:29 +0000 |
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committer | Thomas Schilling <nominolo@googlemail.com> | 2008-09-14 20:56:29 +0000 |
commit | 4feaaf7e1f3b9055bb24f991bd85e30a2294ada9 (patch) | |
tree | b303d533731218613270be10482ef74d7cdb6451 /compiler/hsSyn | |
parent | a200038f469418fef77d863dc3d1cd0125ec1e82 (diff) | |
download | haskell-4feaaf7e1f3b9055bb24f991bd85e30a2294ada9.tar.gz |
Start haddockifying 'HsBindLR'.
Diffstat (limited to 'compiler/hsSyn')
-rw-r--r-- | compiler/hsSyn/HsBinds.lhs | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/compiler/hsSyn/HsBinds.lhs b/compiler/hsSyn/HsBinds.lhs index 86622be1c6..83273f0ca6 100644 --- a/compiler/hsSyn/HsBinds.lhs +++ b/compiler/hsSyn/HsBinds.lhs @@ -81,40 +81,44 @@ type LHsBindLR idL idR = Located (HsBindLR idL idR) type LHsBindsLR idL idR = Bag (LHsBindLR idL idR) data HsBindLR idL idR - = FunBind { -- FunBind is used for both functions f x = e - -- and variables f = \x -> e --- Reason 1: Special case for type inference: see TcBinds.tcMonoBinds --- --- Reason 2: instance decls can only have FunBinds, which is convenient --- If you change this, you'll need to change e.g. rnMethodBinds - --- But note that the form f :: a->a = ... --- parses as a pattern binding, just like --- (f :: a -> a) = ... + = -- | FunBind is used for both functions @f x = e@ + -- and variables @f = \x -> e@ + -- + -- Reason 1: Special case for type inference: see 'TcBinds.tcMonoBinds'. + -- + -- Reason 2: Instance decls can only have FunBinds, which is convenient. + -- If you change this, you'll need to change e.g. rnMethodBinds + -- + -- But note that the form @f :: a->a = ...@ + -- parses as a pattern binding, just like + -- @(f :: a -> a) = ... @ + FunBind { fun_id :: Located idL, - fun_infix :: Bool, -- True => infix declaration + fun_infix :: Bool, -- ^ True => infix declaration - fun_matches :: MatchGroup idR, -- The payload + fun_matches :: MatchGroup idR, -- ^ The payload - fun_co_fn :: HsWrapper, -- Coercion from the type of the MatchGroup to the type of + fun_co_fn :: HsWrapper, -- ^ Coercion from the type of the MatchGroup to the type of -- the Id. Example: + -- @ -- f :: Int -> forall a. a -> a -- f x y = y + -- @ -- Then the MatchGroup will have type (Int -> a' -> a') -- (with a free type variable a'). The coercion will take -- a CoreExpr of this type and convert it to a CoreExpr of -- type Int -> forall a'. a' -> a' -- Notice that the coercion captures the free a'. - bind_fvs :: NameSet, -- After the renamer, this contains a superset of the + bind_fvs :: NameSet, -- ^ After the renamer, this contains a superset of the -- Names of the other binders in this binding group that -- are free in the RHS of the defn -- Before renaming, and after typechecking, -- the field is unused; it's just an error thunk - fun_tick :: Maybe (Int,[idR]) -- This is the (optional) module-local tick number. + fun_tick :: Maybe (Int,[idR]) -- ^ This is the (optional) module-local tick number. } | PatBind { -- The pattern is never a simple variable; |