| Safe Haskell | Safe-Inferred |
|---|---|
| Language | GHC2021 |
Language.Futhark.Parser.Lexer.Wrapper
Description
Utility definitions used by the lexer. None of the default Alex "wrappers" are precisely what we need. The code here is highly minimalistic. Lexers should not be complicated!
Synopsis
- initialLexerState :: Pos -> ByteString -> AlexInput
- type AlexInput = (Pos, Char, ByteString, Int64)
- alexInputPrevChar :: AlexInput -> Char
- data LexerError = LexerError Loc Text
- alexGetByte :: AlexInput -> Maybe (Byte, AlexInput)
- alexGetPos :: AlexInput -> Pos
Documentation
initialLexerState :: Pos -> ByteString -> AlexInput Source #
type AlexInput = (Pos, Char, ByteString, Int64) Source #
The input type. Contains:
- current position
- previous char
- current input string
- bytes consumed so far
alexInputPrevChar :: AlexInput -> Char Source #
data LexerError Source #
Constructors
| LexerError Loc Text |
Instances
| Show LexerError Source # | |
Defined in Language.Futhark.Parser.Lexer.Wrapper Methods showsPrec :: Int -> LexerError -> ShowS # show :: LexerError -> String # showList :: [LexerError] -> ShowS # | |
alexGetPos :: AlexInput -> Pos Source #