ghc-exactprint: ExactPrint for GHC

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

Modules

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Flags

Automatic Flags

Name	Description	Default
roundtrip	Build roundtripping executables	Disabled
dev	Development mode, do not use ghc-exactprint lib in the tests	Disabled

Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info

Downloads

• ghc-exactprint-0.6.tar.gz [browse] (Cabal source package)
• Package description (as included in the package)

Maintainer's Corner

Package maintainers

• AlanZimmerman, PepeIborra, mpickering, fendor, michaelpj

For package maintainers and hackage trustees

• edit package information

Candidates

• 0.2, 0.4.0.0, 0.5.0.0