Lexer

Documentation

newtype Token

Constructors

Token (FilePath, TokenType, AlexPosn)

Instances

Eq Token

Methods

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

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

Show Token

Methods

showsPrec :: Int -> Token -> ShowS

show :: Token -> String

showList :: [Token] -> ShowS

data TokenType

Constructors

TkDot

TkOpenBrc

TkClosBrc

TkOpenCur

TkClosCur

TkOpenSqu

TkClosSqu

TkOpenAng

TkClosAng

TkComma

TkColon

TkIsEq

TkAssign

TkNil

TkSemiCo

TkCons

TkHd

TkTl

TkWhile

TkSwitch

TkCase

TkDefault

TkIf

TkElse

TkRead

TkWrite

TkTrue

TkFalse

TkAtomAsgn

TkAtomDoAsgn

TkAtomWhile

TkAtomDoWhile

TkAtomIf

TkAtomDoIf

TkAtomVar

TkAtomQuote

TkAtomHd

TkAtomDoHd

TkAtomTl

TkAtomDoTl

TkAtomCons

TkAtomDoCons

ITkVar String

ITkInt Int

ITkErr String

TkEOF

Instances

Eq TokenType

Methods

(==) :: TokenType -> TokenType -> Bool

(/=) :: TokenType -> TokenType -> Bool

Show TokenType

Methods

showsPrec :: Int -> TokenType -> ShowS

show :: TokenType -> String

showList :: [TokenType] -> ShowS

tkLineNo :: Token -> Int

tkCharNo :: Token -> Int

tkPath :: Token -> FilePath

tkVarName :: Token -> String

scan :: String -> FilePath -> [Token]

prettyPrintToken :: Token -> String