Cabal-syntax-3.10.2.0: A library for working with .cabal files
Safe HaskellNone
LanguageHaskell2010

Distribution.Backpack

Description

This module defines the core data types for Backpack. For more details, see:

https://github.com/ezyang/ghc-proposals/blob/backpack/proposals/0000-backpack.rst

Synopsis

OpenUnitId

data OpenUnitId Source #

An OpenUnitId describes a (possibly partially) instantiated Backpack component, with a description of how the holes are filled in. Unlike OpenUnitId, the ModuleSubst is kept in a structured form that allows for substitution (which fills in holes.) This form of unit cannot be installed. It must first be converted to a UnitId.

In the absence of Backpack, there are no holes to fill, so any such component always has an empty module substitution; thus we can lossily represent it as a 'DefiniteUnitId uid'.

For a source component using Backpack, however, there is more structure as components may be parametrized over some signatures, and these "holes" may be partially or wholly filled.

OpenUnitId plays an important role when we are mix-in linking, and is recorded to the installed packaged database for indefinite packages; however, for compiled packages that are fully instantiated, we instantiate OpenUnitId into UnitId.

For more details see the Backpack spec https://github.com/ezyang/ghc-proposals/blob/backpack/proposals/0000-backpack.rst

Constructors

IndefFullUnitId ComponentId OpenModuleSubst

Identifies a component which may have some unfilled holes; specifying its ComponentId and its OpenModuleSubst. TODO: Invariant that OpenModuleSubst is non-empty? See also the Text instance.

DefiniteUnitId DefUnitId

Identifies a fully instantiated component, which has been compiled and abbreviated as a hash. The embedded UnitId MUST NOT be for an indefinite component; an OpenUnitId is guaranteed not to have any holes.

Instances

Instances details
Parsec OpenUnitId Source #
>>> eitherParsec "foobar" :: Either String OpenUnitId
Right (DefiniteUnitId (DefUnitId {unDefUnitId = UnitId "foobar"}))

>>> eitherParsec "foo[Str=text-1.2.3:Data.Text.Text]" :: Either String OpenUnitId
Right (IndefFullUnitId (ComponentId "foo") (fromList [(ModuleName "Str",OpenModule (DefiniteUnitId (DefUnitId {unDefUnitId = UnitId "text-1.2.3"})) (ModuleName "Data.Text.Text"))]))
Instance details

Defined in Distribution.Backpack

Methods

parsec :: CabalParsing m => m OpenUnitId Source #

Pretty OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

pretty :: OpenUnitId -> Doc Source #

prettyVersioned :: CabalSpecVersion -> OpenUnitId -> Doc Source #

Structured OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

structure :: Proxy OpenUnitId -> Structure Source #

structureHash' :: Tagged OpenUnitId MD5

Data OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> OpenUnitId -> c OpenUnitId Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c OpenUnitId Source #

toConstr :: OpenUnitId -> Constr Source #

dataTypeOf :: OpenUnitId -> DataType Source #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c OpenUnitId) Source #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c OpenUnitId) Source #

gmapT :: (forall b. Data b => b -> b) -> OpenUnitId -> OpenUnitId Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> OpenUnitId -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> OpenUnitId -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> OpenUnitId -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> OpenUnitId -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> OpenUnitId -> m OpenUnitId Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> OpenUnitId -> m OpenUnitId Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> OpenUnitId -> m OpenUnitId Source #

Generic OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Associated Types

type Rep OpenUnitId 
Instance details

Defined in Distribution.Backpack

type Rep OpenUnitId = D1 ('MetaData "OpenUnitId" "Distribution.Backpack" "Cabal-syntax-3.10.2.0-d35e" 'False) (C1 ('MetaCons "IndefFullUnitId" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ComponentId) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 OpenModuleSubst)) :+: C1 ('MetaCons "DefiniteUnitId" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DefUnitId)))

Methods

from :: OpenUnitId -> Rep OpenUnitId x Source #

to :: Rep OpenUnitId x -> OpenUnitId Source #

Read OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

readsPrec :: Int -> ReadS OpenUnitId Source #

readList :: ReadS [OpenUnitId] Source #

readPrec :: ReadPrec OpenUnitId Source #

readListPrec :: ReadPrec [OpenUnitId] Source #

Show OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

showsPrec :: Int -> OpenUnitId -> ShowS Source #

show :: OpenUnitId -> String Source #

showList :: [OpenUnitId] -> ShowS Source #

Binary OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

put :: OpenUnitId -> Put Source #

get :: Get OpenUnitId Source #

putList :: [OpenUnitId] -> Put Source #

NFData OpenUnitId Source # 
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Defined in Distribution.Backpack

Methods

rnf :: OpenUnitId -> () Source #

Eq OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

(==) :: OpenUnitId -> OpenUnitId -> Bool #

(/=) :: OpenUnitId -> OpenUnitId -> Bool #

Ord OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

Methods

compare :: OpenUnitId -> OpenUnitId -> Ordering #

(<) :: OpenUnitId -> OpenUnitId -> Bool #

(<=) :: OpenUnitId -> OpenUnitId -> Bool #

(>) :: OpenUnitId -> OpenUnitId -> Bool #

(>=) :: OpenUnitId -> OpenUnitId -> Bool #

max :: OpenUnitId -> OpenUnitId -> OpenUnitId #

min :: OpenUnitId -> OpenUnitId -> OpenUnitId #

type Rep OpenUnitId Source # 
Instance details

Defined in Distribution.Backpack

type Rep OpenUnitId = D1 ('MetaData "OpenUnitId" "Distribution.Backpack" "Cabal-syntax-3.10.2.0-d35e" 'False) (C1 ('MetaCons "IndefFullUnitId" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ComponentId) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 OpenModuleSubst)) :+: C1 ('MetaCons "DefiniteUnitId" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 DefUnitId)))

openUnitIdFreeHoles :: OpenUnitId -> Set ModuleName Source #

Get the set of holes (ModuleVar) embedded in a UnitId.

mkOpenUnitId :: UnitId -> ComponentId -> OpenModuleSubst -> OpenUnitId Source #

Safe constructor from a UnitId. The only way to do this safely is if the instantiation is provided.

DefUnitId

data DefUnitId Source #

A UnitId for a definite package. The DefUnitId invariant says that a UnitId identified this way is definite; i.e., it has no unfilled holes.

Instances

Instances details
Parsec DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

parsec :: CabalParsing m => m DefUnitId Source #

Pretty DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

pretty :: DefUnitId -> Doc Source #

prettyVersioned :: CabalSpecVersion -> DefUnitId -> Doc Source #

Structured DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

structure :: Proxy DefUnitId -> Structure Source #

structureHash' :: Tagged DefUnitId MD5

Data DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> DefUnitId -> c DefUnitId Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c DefUnitId Source #

toConstr :: DefUnitId -> Constr Source #

dataTypeOf :: DefUnitId -> DataType Source #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c DefUnitId) Source #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c DefUnitId) Source #

gmapT :: (forall b. Data b => b -> b) -> DefUnitId -> DefUnitId Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> DefUnitId -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> DefUnitId -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> DefUnitId -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> DefUnitId -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> DefUnitId -> m DefUnitId Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> DefUnitId -> m DefUnitId Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> DefUnitId -> m DefUnitId Source #

Generic DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Associated Types

type Rep DefUnitId 
Instance details

Defined in Distribution.Types.UnitId

type Rep DefUnitId = D1 ('MetaData "DefUnitId" "Distribution.Types.UnitId" "Cabal-syntax-3.10.2.0-d35e" 'True) (C1 ('MetaCons "DefUnitId" 'PrefixI 'True) (S1 ('MetaSel ('Just "unDefUnitId") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 UnitId)))

Methods

from :: DefUnitId -> Rep DefUnitId x Source #

to :: Rep DefUnitId x -> DefUnitId Source #

Read DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

readsPrec :: Int -> ReadS DefUnitId Source #

readList :: ReadS [DefUnitId] Source #

readPrec :: ReadPrec DefUnitId Source #

readListPrec :: ReadPrec [DefUnitId] Source #

Show DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

showsPrec :: Int -> DefUnitId -> ShowS Source #

show :: DefUnitId -> String Source #

showList :: [DefUnitId] -> ShowS Source #

Binary DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

put :: DefUnitId -> Put Source #

get :: Get DefUnitId Source #

putList :: [DefUnitId] -> Put Source #

NFData DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

rnf :: DefUnitId -> () Source #

Eq DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

(==) :: DefUnitId -> DefUnitId -> Bool #

(/=) :: DefUnitId -> DefUnitId -> Bool #

Ord DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

Methods

compare :: DefUnitId -> DefUnitId -> Ordering #

(<) :: DefUnitId -> DefUnitId -> Bool #

(<=) :: DefUnitId -> DefUnitId -> Bool #

(>) :: DefUnitId -> DefUnitId -> Bool #

(>=) :: DefUnitId -> DefUnitId -> Bool #

max :: DefUnitId -> DefUnitId -> DefUnitId #

min :: DefUnitId -> DefUnitId -> DefUnitId #

type Rep DefUnitId Source # 
Instance details

Defined in Distribution.Types.UnitId

type Rep DefUnitId = D1 ('MetaData "DefUnitId" "Distribution.Types.UnitId" "Cabal-syntax-3.10.2.0-d35e" 'True) (C1 ('MetaCons "DefUnitId" 'PrefixI 'True) (S1 ('MetaSel ('Just "unDefUnitId") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 UnitId)))

unDefUnitId :: DefUnitId -> UnitId Source #

mkDefUnitId :: ComponentId -> Map ModuleName Module -> DefUnitId Source #

Create a DefUnitId from a ComponentId and an instantiation with no holes.

OpenModule

data OpenModule Source #

Unlike a Module, an OpenModule is either an ordinary module from some unit, OR an OpenModuleVar, representing a hole that needs to be filled in. Substitutions are over module variables.

Constructors

OpenModule OpenUnitId ModuleName 
OpenModuleVar ModuleName 

Instances

Instances details
Parsec OpenModule Source #
>>> eitherParsec "Includes2-0.1.0.0-inplace-mysql:Database.MySQL" :: Either String OpenModule
Right (OpenModule (DefiniteUnitId (DefUnitId {unDefUnitId = UnitId "Includes2-0.1.0.0-inplace-mysql"})) (ModuleName "Database.MySQL"))
Instance details

Defined in Distribution.Backpack

Methods

parsec :: CabalParsing m => m OpenModule Source #

Pretty OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

pretty :: OpenModule -> Doc Source #

prettyVersioned :: CabalSpecVersion -> OpenModule -> Doc Source #

Structured OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

structure :: Proxy OpenModule -> Structure Source #

structureHash' :: Tagged OpenModule MD5

Data OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> OpenModule -> c OpenModule Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c OpenModule Source #

toConstr :: OpenModule -> Constr Source #

dataTypeOf :: OpenModule -> DataType Source #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c OpenModule) Source #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c OpenModule) Source #

gmapT :: (forall b. Data b => b -> b) -> OpenModule -> OpenModule Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> OpenModule -> r Source #

gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> OpenModule -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> OpenModule -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> OpenModule -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> OpenModule -> m OpenModule Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> OpenModule -> m OpenModule Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> OpenModule -> m OpenModule Source #

Generic OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Associated Types

type Rep OpenModule 
Instance details

Defined in Distribution.Backpack

type Rep OpenModule = D1 ('MetaData "OpenModule" "Distribution.Backpack" "Cabal-syntax-3.10.2.0-d35e" 'False) (C1 ('MetaCons "OpenModule" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 OpenUnitId) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ModuleName)) :+: C1 ('MetaCons "OpenModuleVar" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ModuleName)))

Methods

from :: OpenModule -> Rep OpenModule x Source #

to :: Rep OpenModule x -> OpenModule Source #

Read OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

readsPrec :: Int -> ReadS OpenModule Source #

readList :: ReadS [OpenModule] Source #

readPrec :: ReadPrec OpenModule Source #

readListPrec :: ReadPrec [OpenModule] Source #

Show OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

showsPrec :: Int -> OpenModule -> ShowS Source #

show :: OpenModule -> String Source #

showList :: [OpenModule] -> ShowS Source #

Binary OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

put :: OpenModule -> Put Source #

get :: Get OpenModule Source #

putList :: [OpenModule] -> Put Source #

NFData OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

rnf :: OpenModule -> () Source #

Eq OpenModule Source # 
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Defined in Distribution.Backpack

Methods

(==) :: OpenModule -> OpenModule -> Bool #

(/=) :: OpenModule -> OpenModule -> Bool #

Ord OpenModule Source # 
Instance details

Defined in Distribution.Backpack

Methods

compare :: OpenModule -> OpenModule -> Ordering #

(<) :: OpenModule -> OpenModule -> Bool #

(<=) :: OpenModule -> OpenModule -> Bool #

(>) :: OpenModule -> OpenModule -> Bool #

(>=) :: OpenModule -> OpenModule -> Bool #

max :: OpenModule -> OpenModule -> OpenModule #

min :: OpenModule -> OpenModule -> OpenModule #

type Rep OpenModule Source # 
Instance details

Defined in Distribution.Backpack

type Rep OpenModule = D1 ('MetaData "OpenModule" "Distribution.Backpack" "Cabal-syntax-3.10.2.0-d35e" 'False) (C1 ('MetaCons "OpenModule" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 OpenUnitId) :*: S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ModuleName)) :+: C1 ('MetaCons "OpenModuleVar" 'PrefixI 'False) (S1 ('MetaSel ('Nothing :: Maybe Symbol) 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 ModuleName)))

openModuleFreeHoles :: OpenModule -> Set ModuleName Source #

Get the set of holes (ModuleVar) embedded in a Module.

OpenModuleSubst

type OpenModuleSubst = Map ModuleName OpenModule Source #

An explicit substitution on modules.

NB: These substitutions are NOT idempotent, for example, a valid substitution is (A -> B, B -> A).

dispOpenModuleSubst :: OpenModuleSubst -> Doc Source #

Pretty-print the entries of a module substitution, suitable for embedding into a OpenUnitId or passing to GHC via --instantiate-with.

dispOpenModuleSubstEntry :: (ModuleName, OpenModule) -> Doc Source #

Pretty-print a single entry of a module substitution.

parsecOpenModuleSubst :: CabalParsing m => m OpenModuleSubst Source #

Inverse to dispModSubst.

Since: Cabal-syntax-2.2

parsecOpenModuleSubstEntry :: CabalParsing m => m (ModuleName, OpenModule) Source #

Inverse to dispModSubstEntry.

Since: Cabal-syntax-2.2

openModuleSubstFreeHoles :: OpenModuleSubst -> Set ModuleName Source #

Get the set of holes (ModuleVar) embedded in a OpenModuleSubst. This is NOT the domain of the substitution.

Conversions to UnitId

abstractUnitId :: OpenUnitId -> UnitId Source #

When typechecking, we don't demand that a freshly instantiated IndefFullUnitId be compiled; instead, we just depend on the installed indefinite unit installed at the ComponentId.

hashModuleSubst :: Map ModuleName Module -> Maybe String Source #

Take a module substitution and hash it into a string suitable for UnitId. Note that since this takes Module, not OpenModule, you are responsible for recursively converting OpenModule into Module. See also Distribution.Backpack.ReadyComponent.