Support refactoring with HaRe

[tobiasgwaaler]

It would be nice to have refactoring support, for instance by using HaRe as a backend.

A sensible place to start would be support for renaming functions, variable and modules.

I'll try to work something out, but it might take a while.

[atsky]

Thanks, for idea I have never seen this tool.

[atsky]

Some thoughts:

• Idea store documents in memory. You need to save all before refactoring FileDocumentManager.getInstance().saveAllDocuments() should help.
• You have to find ghc options for file. buildwrapper getbuildflags can help. There is class BuildWrapper that executes some buildwrapper functions.
• I'm going to implement refactoring without external tools, but it's hart task and takes a lot time. So using HaRe can be a good decision to start.

[tobiasgwaaler]

Thank you, those are all good points!