JuliaDebug / JuliaDebug/Debugger.jl

Entering to macro expansion?

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Dominant language
Julia
Stars
514
Forks
50
Avg merge
9d 9h
Merged PRs (30d)
1

Description

It would be nice if it's possible to @enter into macro expansion code. I tried a simple approach like this

macro entermacro(ex)
    @assert ex.head == :macrocall
    quote
        let f = getproperty($__module__, $(QuoteNode(ex.args[1]))),
            ln = $(QuoteNode(ex.args[2])),
            args = $(QuoteNode(Tuple(ex.args[3:end])))
            @enter f(ln, $__module__, args...)
        end
    end
end

But it didn't work well as it looks like Debugger cannot fetch the source code of a macro.

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start by reproducing the @enter and entermacro example in the issue and inspect how Debugger fetches source code for the macro call. Determine what support is needed for entering macro expansion code; done means @enter can enter the expansion and display its source reliably.

Written by the indexing model from the issue text.

Assessment

Tech stack
julia
Domain
devtools
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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