Safe Haskell	None

DDC.Core.Tetra.Prim

Contents

Names and lexing.
Baked-in type constructors.
Baked-in data constructors.
Baked-in store operators.
Primitive type constructors.
Primitive arithmetic operators.
Primitive numeric casts.

Synopsis

Names and lexing.

data Name Source

Names of things used in Disciple Core Tetra.

Constructors

NameVar String	User defined variables.
NameCon String	A user defined constructor.
NameTyConTetra TyConTetra	Baked-in type constructors.
NameDaConTetra DaConTetra	Baked-in data constructors.
NameOpStore OpStore	Baked-in operators.
NamePrimTyCon PrimTyCon	A primitive type constructor.
NamePrimArith PrimArith	Primitive arithmetic, logic, comparison and bit-wise operators.
NamePrimCast PrimCast	Primitive numeric casting operators.
NameLitBool Bool	A boolean literal.
NameLitNat Integer	A natural literal.
NameLitInt Integer	An integer literal.
NameLitWord Integer Int	A word literal.
NameHole	Hole used during type inference.

Instances

Eq Name
Ord Name
Show Name
Typeable Name
Pretty Name
NFData Name

isNameHole :: Name -> Bool Source

Check whether a name is NameHole.

isNameLit :: Name -> Bool Source

Check whether a name represents some literal value.

readName :: String -> Maybe Name Source

Read the name of a variable, constructor or literal.

takeTypeOfLitName :: Name -> Maybe (Type Name)Source

Get the type associated with a literal name.

takeTypeOfPrimOpName :: Name -> Maybe (Type Name)Source

Take the type of a primitive operator.

Baked-in type constructors.

data TyConTetra Source

Baked-in type constructors.

Constructors

TyConTetraRef	`Ref#`. Mutable reference.
TyConTetraTuple Int	`TupleN#`. Tuples.
TyConTetraB	`B#`. Boxing type constructor. Used to represent boxed numeric values.
TyConTetraU	`U#`. Unboxed type constructor. Used to represent unboxed numeric values.

Instances

Eq TyConTetra
Ord TyConTetra
Show TyConTetra
Pretty TyConTetra
NFData TyConTetra

readTyConTetra :: String -> Maybe TyConTetra Source

Read the name of a baked-in type constructor.

kindTyConTetra :: TyConTetra -> Type Name Source

Take the kind of a baked-in type constructor.

Baked-in data constructors.

data DaConTetra Source

Data Constructors.

Constructors

DaConTetraTuple Int

TN#. Tuple data constructors.

Instances

Eq DaConTetra
Ord DaConTetra
Show DaConTetra
Pretty DaConTetra
NFData DaConTetra

readDaConTetra :: String -> Maybe DaConTetra Source

Read the name of a baked-in data constructor.

typeDaConTetra :: DaConTetra -> Type Name Source

Yield the type of a baked-in data constructor.

Baked-in store operators.

data OpStore Source

Mutable References.

Constructors

OpStoreAllocRef	Allocate a reference.
OpStoreReadRef	Read a reference.
OpStoreWriteRef	Write to a reference.

Instances

Eq OpStore
Ord OpStore
Show OpStore
Pretty OpStore
NFData OpStore

readOpStore :: String -> Maybe OpStore Source

Read a primitive store operator.

typeOpStore :: OpStore -> Type Name Source

Take the type of a primitive store operator.

Primitive type constructors.

data PrimTyCon

Primitive type constructors.

Constructors

PrimTyConVoid	`Void#` the Void type has no values.
PrimTyConBool	`Bool#` unboxed booleans.
PrimTyConNat	`Nat#` natural numbers. Enough precision to count every object in the heap, but NOT enough precision to count every byte of memory.
PrimTyConInt	`Int#` signed integers. Enough precision to count every object in the heap, but NOT enough precision to count every byte of memory. If N is the total number of objects that can exist in the heap, then the range of `Int#` is at least (-N .. +N) inclusive.
PrimTyConWord Int	`WordN#` machine words of the given width.
PrimTyConFloat Int	`FloatN#` floating point numbers of the given width.
PrimTyConVec Int	`VecN#` a packed vector of N values. This is intended to have kind (Data -> Data), so we use concrete vector types like `Vec4`.
PrimTyConAddr	`Addr#` a relative or absolute machine address. Enough precision to count every byte of memory. Unlike pointers below, an absolute `Addr#` need not refer to memory owned by the current process.
PrimTyConPtr	`Ptr#` should point to a well-formed object owned by the current process.
PrimTyConTag	`Tag#` data constructor tags. Enough precision to count every possible alternative of an enumerated type.
PrimTyConString	`String#` of UTF8 characters. These are primitive until we can define our own unboxed types.

Instances

Eq PrimTyCon
Ord PrimTyCon
Show PrimTyCon
Pretty PrimTyCon
NFData PrimTyCon

readPrimTyCon :: String -> Maybe PrimTyCon

Read a primitive type constructor.

Words are limited to 8, 16, 32, or 64 bits.

Floats are limited to 32 or 64 bits.

kindPrimTyCon :: PrimTyCon -> Kind Name Source

Yield the kind of a type constructor.

Primitive arithmetic operators.

data PrimArith

Primitive arithmetic, logic, and comparison opretors. We expect the backend/machine to be able to implement these directly.

For the Shift Right operator, the type that it is used at determines whether it is an arithmetic (with sign-extension) or logical (no sign-extension) shift.

Constructors

PrimArithNeg	Negation
PrimArithAdd	Addition
PrimArithSub	Subtraction
PrimArithMul	Multiplication
PrimArithDiv	Division
PrimArithMod	Modulus
PrimArithRem	Remainder
PrimArithEq	Equality
PrimArithNeq	Negated Equality
PrimArithGt	Greater Than
PrimArithGe	Greater Than or Equal
PrimArithLt	Less Than
PrimArithLe	Less Than or Equal
PrimArithAnd	Boolean And
PrimArithOr	Boolean Or
PrimArithShl	Shift Left
PrimArithShr	Shift Right
PrimArithBAnd	Bit-wise And
PrimArithBOr	Bit-wise Or
PrimArithBXOr	Bit-wise eXclusive Or

Instances

Eq PrimArith
Ord PrimArith
Show PrimArith
Pretty PrimArith
NFData PrimArith

readPrimArith :: String -> Maybe PrimArith

Read a primitive operator.

typePrimArith :: PrimArith -> Type Name Source

Take the type of a primitive arithmetic operator.

Primitive numeric casts.

data PrimCast

Primitive cast between two types.

The exact set of available casts is determined by the target platform. For example, you can only promote a Nat# to a Word32# on a 32-bit system. On a 64-bit system the Nat# type is 64-bits wide, so casting it to a Word32# would be a truncation.

Constructors

PrimCastConvert	Convert a value to a new representation with the same precision.
PrimCastPromote	Promote a value to one of similar or larger width, without loss of precision.
PrimCastTruncate	Truncate a value to a new width, possibly losing precision.

Instances

Eq PrimCast
Ord PrimCast
Show PrimCast
Pretty PrimCast
NFData PrimCast

readPrimCast :: String -> Maybe PrimCast

typePrimCast :: PrimCast -> Type Name Source

Take the type of a primitive numeric cast operator.