DDC.Base.Lexer

Lexer utilities.

Documentation

data SourcePos

A position in the source file.

If there is no file path then we assume that the input has been read from an interactive session and display ''<interactive>'' when pretty printing.

Constructors

SourcePos

Fields

sourcePosFile :: Maybe FilePath

sourcePosLine :: Int

sourcePosColumn :: Int

Instances

Eq SourcePos

Show SourcePos

Pretty SourcePos

Tokens

data Token t

Wrapper for primitive token type that gives it a source position.

Constructors

Token

Fields

tokenTok :: t

tokenSourcePos :: SourcePos

Instances

Eq t => Eq (Token t)

Show t => Show (Token t)

takeParsecSourcePos :: Token k -> SourcePos

Take the parsec style source position from a token.