ghc-exactprint

ExactPrint for GHC

Version on this page:	0.5.4.0
LTS Haskell 20.24:	1.5.0@rev:1
Stackage Nightly 2023-06-08:	1.6.1.3
Latest on Hackage:	1.7.0.1

See all snapshots ghc-exactprint appears in

BSD-3-Clause licensed by Alan Zimmerman, Matthew Pickering

Maintained by alan.zimm@gmail.com

This version can be pinned in stack with:ghc-exactprint-0.5.4.0@sha256:85db1501c5091d66a2bacd147959ba8c840892d268cce51158abf7d3f865b1c4,7083

Module documentation for 0.5.4.0

Language
- Language.Haskell
  - Language.Haskell.GHC
    - Language.Haskell.GHC.ExactPrint

Depends on 10 packages(full list with versions):

base, bytestring, containers, directory, filepath, free, ghc-paths, mtl, syb

Used by 2 packages in lts-6.35(full list with versions):

apply-refact, HaRe

Using the API Annotations available from GHC 7.10.2, this library provides a means to round trip any code that can be compiled by GHC, currently excluding lhs files.

It does this with a phased approach

Delta - converts GHC API Annotations into relative offsets, indexed by SrcSpan
Transform - functions to facilitate changes to the AST, adjusting the annotations generated in the Delta phase to suit the changes.
Print - converts an AST and its annotations to properly formatted source text.
Pretty - adds annotations to an AST (fragment) so that the output can be parsed back to the same AST.

Note: requires GHC 7.10.2 or later