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module Language.Haskell.Lexer.Tokens where
-- | Haskell token classifications:
data Token
= Varid -- ^ Variable
| Conid -- ^ Constructor
| Varsym -- ^ Variable operator
| Consym -- ^ Constructor operator
| Reservedid -- ^ Reserved keyword
| Reservedop -- ^ Reserved operator
| Specialid
| IntLit -- ^ Integral numeric literal
| FloatLit -- ^ Fractional numeric literal
| CharLit -- ^ Character literal
| StringLit -- ^ String literal
| QQuote -- ^ Quasi quote: @[|text|stuff|]@
| Qvarid -- ^ Qualified variable
| Qconid -- ^ Qualified constructor
| Qvarsym -- ^ Qualified variable operator
| Qconsym -- ^ Qualified constructor operator
| Special
| Whitespace -- ^ White space
| NestedCommentStart -- ^ Internal: causes a call to an external function
| NestedComment -- ^ A nested comment ({- ... -})
| LiterateComment -- ^ Not handled by the lexer
| Commentstart -- ^ Dashes
| Comment -- ^ The stuff after the dashes
| ErrorToken | GotEOF | TheRest
| ModuleName | ModuleAlias -- ^ recognized in a later pass
-- Inserted during layout processing (see Haskell 98, 9.3):
| Layout -- ^ for implicit braces
| Indent Int -- ^ \<n\>, to preceed first token on each line
| Open Int -- ^ \{n\}, after let, where, do or of, if not followed by a \"{\"
deriving (Show,Eq,Ord)
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