Language.LBNF.Runtime

Contains things that are typically needed in modules that use languages defined using BNFC-meta.

Happy and Alex runtimes

data ParseMonad a

Constructors

Ok a

Bad String

Instances

Monad ParseMonad

Functor ParseMonad

Applicative ParseMonad

Eq a => Eq (ParseMonad a)

Ord a => Ord (ParseMonad a)

Read a => Read (ParseMonad a)

Show a => Show (ParseMonad a)

err :: (String -> a) -> ParseMonad a -> a

Pretty printing runtimes

printTree :: Print a => a -> String

type Doc = [ShowS] -> [ShowS]

doc :: ShowS -> Doc

concatD :: [Doc] -> Doc

class Print a where

Minimal complete definition

prt

Methods

prt :: Int -> a -> Doc

prtList :: [a] -> Doc

Instances

Print Char

Print Double

Print Integer

Print PrintPlain

Print Ident

Print Reg

Print MinimumSize

Print Exp

Print Arg

Print HsTyp

Print MIdent

Print Label

Print Cat

Print Item

Print RHS

Print Def

Print Grammar

Print a => Print [a]

prPrec :: Int -> Int -> Doc -> Doc

newtype PrintPlain

Constructors

MkPrintPlain String

Instances

Print PrintPlain