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the dynabook but for haskell

License: BSD 3-Clause "New" or "Revised" License

Haskell 99.55% Shell 0.35% Batchfile 0.09% Dhall 0.02%

dynahaskell's Introduction

dynahaskell

Installation

You need to build a copy of GHC with this diff. I've already patched it onto GHC-8.6.5 if you'd prefer that, and also built it for linux boxes.

To be honest, I'm not really sure how to install this thing; I just stuck it into ~/.stack/programs/x86_64-linux/ and pretended it was a real ghc-variant. Name it ghc-custom-dyna4-tinfo6.

You also need a hacked version of brick downloaded side-by-side.

Ideas

Expose the editing actions as an effect
Describe editing targets via srcspans
Effect for getting info on srcspans -- what's in scope, what type it is, etc (don't actually need a hacked GHC for this)

High Level

Interfaces and abstraction boundaries! Maybe the OOP guys got it right!

dynahaskell's People

Contributors

Stargazers

Watchers

Forkers

agentultra stjordanis

dynahaskell's Issues

Annotate view

can i add color to the outputted AST?

Highlight type errors

Type errors occur in the typechecked source as HsWrap _ (WpCast _) badExpr. Annotate these things after #6; and provide an editing target for type errors.

Change in-scope-bindings into context pane

More things are going to be useful, so let's have a system for dealing with them

Select from context pane

Some actions want to prompt for input from a list of things

Can I get around ppr?

Right now typechecking is done by printing out the AST, and then parsing it, and then typechecking that. But why not just typecheck the ast we have?

Line/column into AST node

Reparse srcspans, and then search them to figure out which bit someone wants to edit

Do blocks are broken

Writing do blocks breaks typechecking, because addAnnotationsForPretty adds preceding spaces in ways that are hard to work around in general.

alanz/ghc-exactprint#80

Add type signature inference

we already know types, might as well be able to add them!

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