Data.Syntactic.Decoration

Construct for decorating symbols or expressions with additional information

Documentation

data (expr :&: info) sig where

Decorating symbols or expressions with additional information

One usage of :&: is to decorate every node of a syntax tree. This is done simply by changing

 AST sym sig

to

 AST (sym :&: info) sig

Constructors

:&: :: expr sig -> info (DenResult sig) -> (expr :&: info) sig

Fields

decorExpr :: expr sig

decorInfo :: info (DenResult sig)

Instances

Project sub sup => Project sub (:&: sup info)

StringTree expr => StringTree (:&: expr info)

Render expr => Render (:&: expr info)

Equality expr => Equality (:&: expr info)

Eval sym => Eval (:&: sym info)

BindingDomain sym => BindingDomain (:&: sym i)

EvalEnv sym env => EvalEnv (:&: sym info) env

mapDecor :: (sym1 sig -> sym2 sig) -> (info1 (DenResult sig) -> info2 (DenResult sig)) -> (sym1 :&: info1) sig -> (sym2 :&: info2) sig

Map over a decoration

getDecor :: AST (sym :&: info) sig -> info (DenResult sig)

Get the decoration of the top-level node

updateDecor :: forall info sym a. (info a -> info a) -> ASTF (sym :&: info) a -> ASTF (sym :&: info) a

Update the decoration of the top-level node

liftDecor :: (expr s -> info (DenResult s) -> b) -> (expr :&: info) s -> b

Lift a function that operates on expressions with associated information to operate on a :&: expression. This function is convenient to use together with e.g. queryNodeSimple when the domain has the form (sym :&: info).

stripDecor :: AST (sym :&: info) sig -> AST sym sig

Strip decorations from an AST

stringTreeDecor :: forall info sym a. StringTree sym => (forall a. info a -> String) -> ASTF (sym :&: info) a -> Tree String

Rendering of decorated syntax trees

showDecorWith :: StringTree sym => (forall a. info a -> String) -> ASTF (sym :&: info) a -> String

Show an decorated syntax tree using ASCII art

drawDecorWith :: StringTree sym => (forall a. info a -> String) -> ASTF (sym :&: info) a -> IO ()

Print an decorated syntax tree using ASCII art