Text.ANTLR.Lex

Documentation

tokenize

Arguments

:: (Eq i, Ord s, Eq s, Show s, Show i, Show n, Show v, Hashable i, Hashable s)

=> [(n, DFA s i)]

Association list of named DFAs.

-> (Lexeme s -> n -> v)

Constructs the value of a token from lexeme matched.

-> [s]

The input string.

-> [Token n v]

The tokenized tokens.

Entrypoint for tokenizing an input stream given a list of named DFAs that we can match on.

@dfaTuples@: converts from DFAs to the names associated with them in

the specification of the lexer.

@fncn@: function for constructing the value of a token from the lexeme

matched (e.g. varName) and the associated token name (e.g. id)

data Token n v

Token with names n, values v, and number of input symbols consumed to match it.

Constructors

Token n v Int

Tokenized a token

EOF

The end-of-file token

Error Text

Error encountered while tokenizing

Instances

Eq n => Eq (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

Methods

(==) :: Token n v -> Token n v -> Bool

(/=) :: Token n v -> Token n v -> Bool

(Ord n, Ord v) => Ord (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

Methods

compare :: Token n v -> Token n v -> Ordering

(<) :: Token n v -> Token n v -> Bool

(<=) :: Token n v -> Token n v -> Bool

(>) :: Token n v -> Token n v -> Bool

(>=) :: Token n v -> Token n v -> Bool

max :: Token n v -> Token n v -> Token n v

min :: Token n v -> Token n v -> Token n v

(Show n, Show v) => Show (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

Methods

showsPrec :: Int -> Token n v -> ShowS

show :: Token n v -> String

showList :: [Token n v] -> ShowS

Generic (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

Associated Types

type Rep (Token n v) :: Type -> Type

Methods

from :: Token n v -> Rep (Token n v) x

to :: Rep (Token n v) x -> Token n v

(Hashable n, Hashable v) => Hashable (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

Methods

hashWithSalt :: Int -> Token n v -> Int

hash :: Token n v -> Int

(Prettify n, Prettify v) => Prettify (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

Methods

prettify :: Token n v -> Pretty

prettifyList :: [Token n v] -> Pretty

Ref (Token n v)

Tokens are symbolized by an icon containing their name.

Defined in Text.ANTLR.Parser

Associated Types

type Sym (Token n v) :: Type

Methods

getSymbol :: Token n v -> Sym (Token n v)

type Rep (Token n v)

Defined in Text.ANTLR.Lex.Tokenizer

type Rep (Token n v) = D1 (MetaData "Token" "Text.ANTLR.Lex.Tokenizer" "antlr-haskell-0.1.0.1-47wJxWjYxn91lXcjBVmKNu" False) (C1 (MetaCons "Token" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 n) :*: (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 v) :*: S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Int))) :+: (C1 (MetaCons "EOF" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "Error" PrefixI False) (S1 (MetaSel (Nothing :: Maybe Symbol) NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 Text))))

type Sym (Token n v)

Defined in Text.ANTLR.Parser

type Sym (Token n v) = TokenSymbol n

tokenName :: Token n v -> n

Token Names are Input Symbols to the parser.

tokenValue :: Token n v -> v

Get the value of a token, ignoring its name.