pdf-toolbox-core-0.0.4.1: A collection of tools for processing PDF files.

Safe HaskellSafe
LanguageHaskell98

Pdf.Toolbox.Core.Error

Description

Error used by API

Synopsis

Documentation

data PdfError #

Errors

Constructors

ParseError [String] String

Parser error

IOError IOError 
AnnotatedError String PdfError 
UnexpectedError String

Something unexpected

Instances

type PdfE m = ExceptT PdfError m #

API uses this for error handling

annotateError :: Monad m => String -> PdfE m a -> PdfE m a #

Wrap any PdfError into AnnotatedError

Usefull when you want to add high-level description to error, returned by low-level function

annotatingError :: Monad m => PdfE m a -> String -> PdfE m a #

annotateError with fliped arguments

tryPdfIO :: MonadIO m => IO a -> PdfE m a #

Catch exception if any and convert to IOError

module Control.Error