Safe Haskell	None

DDC.Core.Flow

Contents

Language profile
Names
Name Parsing
Program Lexing

Description

Disciple Core Flow is a Domain Specific Language (DSL) for writing first order data flow programs.

Synopsis

Language profile

profile :: Profile Name Source

Language profile for Disciple Core Flow.

Names

data Name Source

Names of things used in Disciple Core Flow.

Constructors

NameVar String	User defined variables.
NameVarMod Name String	A name generated by modifying some other name `name$mod`
NameCon String	A user defined constructor.
NameKiConFlow KiConFlow	Fragment specific kind constructors.
NameTyConFlow TyConFlow	Fragment specific type constructors.
NameDaConFlow DaConFlow	Fragment specific data constructors.
NameOpFlow OpFlow	Flow operators.
NameOpLoop OpLoop	Loop operators.
NameOpStore OpStore	Store operators.
NamePrimTyCon PrimTyCon	A primitive type constructor.
NamePrimArith PrimArith	Primitive arithmetic, logic, comparison and bit-wise operators.
NamePrimCast PrimCast	Primitive casting between numeric types.
NameLitBool Bool	A boolean literal.
NameLitNat Integer	A natural literal.
NameLitInt Integer	An integer literal.
NameLitWord Integer Int	A word literal.

Instances

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

data TyConFlow Source

Fragment specific type constructors.

Constructors

TyConFlowTuple Int	`TupleN#` constructor. Tuples.
TyConFlowVector	`Vector#` constructor. Vectors.
TyConFlowSeries	`Series#` constructor. Series types.
TyConFlowSegd	`Segd#` constructor. Segment Descriptors.
TyConFlowSel Int	`SelN#` constructor. Selectors.
TyConFlowRef	`Ref#` constructor. References.
TyConFlowWorld	`World#` constructor. State token used when converting to GHC core.
TyConFlowRateNat	`RateNat#` constructor. Naturals witnessing a type-level Rate.

Instances

Eq TyConFlow
Ord TyConFlow
Show TyConFlow
Pretty TyConFlow
NFData TyConFlow

data PrimTyCon

Primitive type constructors.

Constructors

PrimTyConVoid	`Void#` the Void type has no values.
PrimTyConBool	`Bool#` unboxed booleans.
PrimTyConNat	`Nat#` natural numbers. Big enough to count every addressable byte in the store.
PrimTyConInt	`Int#` signed integers.
PrimTyConWord Int	`WordN#` machine words of the given width.
PrimTyConFloat Int	`FloatN#` floating point numbers of the given width.
PrimTyConTag	`Tag#` data constructor tags.
PrimTyConAddr	`Addr#` raw machine addresses. Unlike pointers below, a raw `Addr#` need not to refer to memory owned by the current process.
PrimTyConPtr	`Ptr#` should point to a well-formed object owned by the current process.
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

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

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

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

Name Parsing

readName :: String -> Maybe Name Source

Read the name of a variable, constructor or literal.

Program Lexing

lexModuleString :: String -> Int -> String -> [Token (Tok Name)]Source

Lex a string to tokens, using primitive names.

The first argument gives the starting source line number.

lexExpString :: String -> Int -> String -> [Token (Tok Name)]Source

Lex a string to tokens, using primitive names.

The first argument gives the starting source line number.