Module

Text.Parsing.Parser.Expr

Package: purescript-parsing
Repository: purescript-contrib/purescript-parsing

This module is a port of the Haskell Text.Parsec.Expr module.

#Assoc Source

data Assoc

Constructors

#Operator Source

data Operator :: (Type -> Type) -> Type -> Type -> Typedata Operator m s a

Constructors

Infix (ParserT s m (a -> a -> a)) Assoc
Prefix (ParserT s m (a -> a))
Postfix (ParserT s m (a -> a))

#OperatorTable Source

type OperatorTable :: (Type -> Type) -> Type -> Type -> Typetype OperatorTable m s a = Array (Array (Operator m s a))

#buildExprParser Source

buildExprParser :: forall m s a. Monad m => OperatorTable m s a -> ParserT s m a -> ParserT s m a

Build a parser from an OperatorTable.

For example:

buildExprParser [ [ Infix (string "/" $> div) AssocRight ]
                , [ Infix (string "*" $> mul) AssocRight ]
                , [ Infix (string "-" $> sub) AssocRight ]
                , [ Infix (string "+" $> add) AssocRight ]
                ] digit

Modules: Text.Parsing.Indent; Text.Parsing.Parser; Text.Parsing.Parser.Combinators; Text.Parsing.Parser.Expr; Text.Parsing.Parser.Language; Text.Parsing.Parser.Pos; Text.Parsing.Parser.String; Text.Parsing.Parser.String.Basic; Text.Parsing.Parser.Token